CN112987017B

CN112987017B - Ultrasonic imaging system and power-off control method thereof

Info

Publication number: CN112987017B
Application number: CN201911217000.6A
Authority: CN
Inventors: 张皖; 朱思君; 胡锐
Original assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd
Current assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2024-04-19
Anticipated expiration: 2039-11-29
Also published as: CN112987017A

Abstract

The application discloses an ultrasonic imaging system and a power-off control method thereof, wherein the system comprises ultrasonic imaging equipment and a power supply device for supplying power to the ultrasonic imaging equipment; the power supply device includes: a line side interface provided with a first magnetic member and a power supply module; the ultrasonic imaging apparatus includes: a load; the host interface is provided with a second magnetic piece, and the second magnetic piece is used for magnetic attraction of the first magnetic piece; the second control switch is connected with the host interface and the load and used for connecting or disconnecting the host interface and the load; and the equipment control circuit is respectively connected with the second control switch and the host interface and is used for controlling the second control switch to be disconnected when the magnetic attraction of the first magnetic piece and the second magnetic piece is released so as to disconnect the host interface from the load. The power supply device and the ultrasonic imaging equipment are connected in a magnetic adsorption mode, and the connection between the host interface and the load is disconnected when the magnetic interface of the power supply device is pulled out from the magnetic interface of the ultrasonic imaging equipment, so that the interface and the load are protected.

Description

Ultrasonic imaging system and power-off control method thereof

Technical Field

The application relates to the technical field of power supply of ultrasonic imaging equipment, in particular to an ultrasonic imaging system and a power-off control method thereof.

Background

Ultrasound imaging devices, such as portable ultrasound imaging devices, are typically powered using an adapter, the power cord of which is connected to the ultrasound imaging device by a plug-in connector. The plug-in force of the plug-in connector is large, so that the plug-in between the adapter and the ultrasonic imaging equipment is inconvenient.

Disclosure of Invention

In a first aspect, the present application provides an ultrasound imaging system comprising an ultrasound imaging device and power supply means for supplying power to the ultrasound imaging device; the power supply device includes: a line side interface provided with a first magnetic member and a power supply module for providing electric energy for the line side interface;

the ultrasonic imaging apparatus includes:

a load;

the host interface is provided with a second magnetic piece, and the second magnetic piece is used for being magnetically attracted with the first magnetic piece of the line side interface so that the line side interface is connected with the host interface;

The second control switch is connected with the host interface and the load and used for controllably switching between an on state and an off state so as to connect or disconnect the host interface and the load;

And the equipment control circuit is respectively connected with the second control switch and the host interface and is used for controlling the second control switch to be disconnected when the magnetic adsorption of the first magnetic piece and the second magnetic piece is released so as to disconnect the host interface and the load.

In a second aspect, the present application provides a power-off control method of the aforementioned ultrasound imaging system, the method comprising:

When the magnetic attraction of the first magnetic piece and the second magnetic piece is released, the equipment control circuit controls the second control switch to enter an off state so as to disconnect the load from the host interface.

The embodiment of the application provides an ultrasonic imaging system and a power-off control method thereof, wherein a power supply device and ultrasonic imaging equipment are connected in a magnetic adsorption mode, so that a user does not need to forcefully plug; when the magnetic type interface of the power supply device is pulled out from the magnetic type interface of the ultrasonic imaging device, the connection between the host interface and the load is disconnected, so that the problem that the interface is ignited when the host interface and the line side interface of the power supply device are separated due to the fact that the electric energy stored by the capacitor, the inductor and the like in the load is transmitted to the host interface is solved, and the damage to the load caused by the fact that discharged energy is transmitted to the load when the charged equipment such as the power supply device is abnormally discharged to the host interface can be prevented.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure of the application as claimed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an ultrasound imaging system according to an embodiment of the present application;

FIG. 2 is a schematic illustration of a construction of the load of FIG. 1;

FIG. 3 is a schematic diagram of a configuration of the feature circuit of FIG. 1;

FIG. 4 is a schematic diagram of a configuration of the bit detection circuit of FIG. 1;

FIG. 5 is a schematic diagram of an embodiment of an ultrasound imaging system;

FIG. 6 is a schematic structural view of another embodiment of an ultrasound imaging system;

FIG. 7 is a schematic structural view of yet another embodiment of an ultrasound imaging system;

FIG. 8 is a schematic structural view of yet another embodiment of an ultrasound imaging system;

FIG. 9 is a schematic structural view of yet another embodiment of an ultrasound imaging system;

FIG. 10 is a schematic structural view of an embodiment of a power supply of an ultrasound imaging system;

FIG. 11 is a schematic diagram of an embodiment of an ultrasound imaging apparatus;

fig. 12 is a flow chart of a method of powering an ultrasound imaging system according to an embodiment of the application.

Reference numerals illustrate:

100. An ultrasonic imaging device; 110. a load; 111. an ultrasonic probe; 112. a main board; 101. a processor; 113. a display; 120. a host interface; 121. a second magnetic member; 122. a third magnetic member; 130. a feature circuit; 131. an impedance circuit; 132. a first delay circuit; 133. a first memory; 140. a second control switch; 150. an equipment control circuit; 151. a power-up/power-down detection circuit; 152. a second power-on control circuit; 153. a second temperature sensor; 1531. a second temperature sensor; 154. a second on-off control circuit; 160. a voltage detection circuit; 170. a rechargeable battery;

200. a power supply device; 210. a line side interface; 211. a first magnetic member; 212. a detection terminal; 213. a communication terminal; 214. a Hall element; 220. a power module; 230. a first control switch; 240. a line side control circuit; 241. an in-place detection circuit; 242. a first power-on control circuit; 243. a short circuit detection circuit; 244. a first temperature sensor; 2441. a first temperature sensor; 245. a first on-off control circuit; 250. a second delay circuit; 260. a first sampling circuit;

10. a host hall element; 11. an output terminal; 20. a fourth magnetic member; 30. and an input terminal.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The flow diagrams depicted in the figures are merely illustrative and not necessarily all of the elements and operations/steps are included or performed in the order described. For example, some operations/steps may be further divided, combined, or partially combined, so that the order of actual execution may be changed according to actual situations.

Some embodiments of the present application are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an ultrasound imaging system according to an embodiment of the application. The ultrasound imaging system comprises an ultrasound imaging apparatus 100 and a power supply 200. The power supply 200 may supply power to the ultrasound imaging apparatus 100.

As shown in fig. 1, the ultrasonic imaging apparatus 100 includes a load 110 and a host interface 120 provided with a second magnetic member 121, and the power supply device 200 supplies power to the ultrasonic imaging apparatus 100 by communicating with the host interface 120, and in particular, the second magnetic member 121 is magnetically attracted to a line-side interface 210 of the power supply device 200 of the ultrasonic imaging apparatus 100 to connect the host interface 120 to the power supply device 200.

Illustratively, the load 110 is used to perform ultrasound imaging. As shown in fig. 2, the load 110 may include a portion of the ultrasonic probe 111, the main board 112, the display 113, etc. of the ultrasonic imaging apparatus 100 consuming electric power, the main board 112 acquiring an ultrasonic echo signal from the ultrasonic probe 111, and performing ultrasonic imaging on the ultrasonic echo signal to acquire an ultrasonic image of a subject; the ultrasound image is then transmitted to the display 113 for display.

As can be appreciated, the ultrasound imaging apparatus 100 is configured to transmit ultrasound waves to a subject through the ultrasound probe 111, receive ultrasound echoes returned from the subject, and ultrasonically image the ultrasound echo signals to obtain an ultrasound image of the subject; the ultrasound image is then displayed on the display 113.

The power supply 200 is used to supply power to the ultrasound imaging apparatus 100. Specifically, as shown in fig. 1, the power supply device 200 includes a line side interface 210, a power module 220, and a first control switch 230, where the power module 220 is configured to provide power to the line side interface 210.

The power supply apparatus 200 further includes a line side control circuit 240 for controlling whether the power module 220 supplies power to the line side interface 210.

The wire side interface 210 is provided with a first magnetic member 211, and the first magnetic member 211 is magnetically attracted to the host interface 120 to enable the wire side interface 210 to be connected to the host interface 120. Specifically, the first magnetic member 211 magnetically attracts the second magnetic member 121 of the host interface 120, so as to implement the connection line side interface 210 and the host interface 120. The second magnetic member 121 and the first magnetic member 211 are, for example, ferrite magnets, alnico magnets, neodymium-iron-boron magnets, etc., which are not limited in the present invention.

The power module 220 is used to provide power to the wire side interface 210. For example, the power module 220 includes a power adapter for converting mains power to electrical power that matches the ultrasound imaging device 100. The power module 220 also includes a power cord, one end of which is connected to the cord-side interface 210 and the other end of which is connected to the power adapter. For example, the power cord and the power adapter are fixedly connected or detachably connected.

The ultrasonic imaging system shown in fig. 1 connects the power supply device 200 and the ultrasonic imaging apparatus 100 by means of magnetic attraction, and does not require a user to insert and pull the power supply device and the ultrasonic imaging apparatus, so that the line-side interface 210 and the host interface 120 can be connected in a shorter time, thereby reducing the working intensity of the user and facilitating the use of the user. In the magnetic connection, because the resistance of the magnetic port at the moment of contact is large, the local temperature rise is possibly too high due to hot plug and may strike fire to damage the equipment, so the ultrasonic imaging system of fig. 1 further provides the first control switch 230 and the line side control circuit 240 on the power supply device 200, so that the line side interface 210 and the power supply module 220 are only connected when the line side interface 210 is detected to be connected with the host interface 120, and the power supply device 200 can supply power to the outside.

The first control switch 230 and the line side control circuit 240 may be disposed near the power adapter, in the power adapter, or on the power line, or may also be disposed near the line side interface 210. It will be appreciated that the first control switch 230 and the line side control circuit 240 may facilitate the routing and improve the reliability when disposed near the line side interface 210.

Specifically, as shown in fig. 1, the first control switch 230 is connected to the power module 220 and the line side interface 210, and may be specifically connected between the power module 220 and the line side interface 210. The first control switch 230 is used to controllably switch between on and off states to connect or disconnect the power module 220 and the line side interface 210. For example, the first control switch 230 includes a metal-oxide semiconductor field effect transistor (MOSFET), to which the present invention is not limited.

The line side control circuit 240 is respectively connected with the line side interface 210 and the first control switch 230 in a signal manner, and is used for detecting whether the line side interface 210 is connected with the host interface 120 of the ultrasonic imaging device 100; if the line side control circuit 240 detects that the line side interface 210 is connected to the host interface 120, a first control signal is sent to the first control switch 230 to turn on the first control switch 230 to connect the line side interface 210 and the power module 220 to supply power to the host interface 120.

When the line side interface 210 is not connected to the host interface 120, the power module 220 and the line side interface 210 are not connected, and the line side interface 210 is not powered, so that no abnormal discharge spark is generated when the line side interface 210 approaches the host interface 120.

After detecting that the line side interface 210 is connected to the host interface 120, the first control switch 230 is turned on, and the power module 220 supplies power to the line side interface 210, so that the host interface 120 can obtain power. In this process, after the power supply device 200 is successfully connected with the magnetic part of the ultrasonic imaging apparatus 100, the power supply device 200 supplies power to the ultrasonic imaging apparatus 100, so that abnormal discharge and ignition cannot be generated in the process, and the large temperature rise generated by the large impedance of the magnetic adsorption connection mode at the moment of interface contact can be avoided, so that the safety of the subsequent load can be protected, and the service life can be prolonged.

Illustratively, the line side control circuit 240 is configured to detect the device signal output by the line side interface 210, and determine whether the line side interface 210 is connected to the host interface 120 of the ultrasound imaging device 100 according to the device signal output by the line side interface 210. For example, the line side control circuit 240 is configured to send a first control signal to the first control switch 230 to turn on the first control switch 230 to connect the line side interface 210 and the power module 220 to supply power to the host interface 120 when detecting that the device signal is a characteristic signal representing the ultrasound imaging device 100. The detection of the characteristic signal helps the line side control circuit 240 accurately detect the ultrasonic imaging apparatus 100, and does not supply power to other non-ultrasonic imaging apparatuses, or supplies power to the outside when the other magnetic parts are accidentally turned on, thereby further improving the power supply safety.

For example, after the line-side interface 210 and the host interface 120 are connected, the power supply device 200 may transmit a signal to the host interface 120 through the line-side interface 210, and after the host interface 120 transmits the signal to the line-side interface 210, the host interface 120 outputs a feedback electrical signal to the line-side interface 210, and the line-side interface 210 further outputs the feedback electrical signal received from the host interface 120 to the line-side control circuit 240. The feedback electrical signal is a device signal output from the line-side interface to the line-side control circuit 240, and after the line-side interface 210 and the host interface 120 are connected, the feedback electrical signal is a characteristic signal representing the ultrasound imaging device 100.

In some embodiments, as shown in fig. 1, the ultrasound imaging device 100 includes a characterization circuit 130 for providing a characterization signal. The feature circuit 130 may be disposed, for example, on the motherboard 112 of the ultrasound imaging device 100 or on a circuit board proximate to the host interface 120. The feature circuit 130 may output a feedback electrical signal to the host interface 120 in response to a signal communicated by the line-side interface 210.

Illustratively, as shown in FIG. 1, the line side interface 210 includes a sense terminal 212. The detection terminal 212 is used for being connected with the feature circuit 130 of the ultrasonic imaging device 100 when the line side interface 210 is connected with the host interface 120, for transmitting signals to the feature circuit 130, and outputting feedback electric signals transmitted from the host interface 120 to the line side control circuit 240. The line side control circuit 240 includes a bit detection circuit 241 connected to the detection terminal 212. The bit detection circuit 241 is configured to detect whether the signal received by the detection terminal 212 corresponds to a characteristic signal that characterizes the ultrasound imaging apparatus 100, and determine that the line side interface 210 is connected to the host interface 120 when the characteristic signal is detected.

After the line-side interface 210 is connected to the host interface 120, the detection terminal 212 may, for example, transmit a current signal to the host interface 120, and the feature circuit 130 may transmit a feedback electrical signal in the form of a voltage, i.e., a feedback voltage signal, to the detection terminal 212 through the host interface 120 in response to the current signal. The detection terminal 212 may, for example, communicate a communication request signal to the host interface 120, and the feature circuit 130 communicates an internally stored communication reply signal to the detection terminal 212 through the host interface 120 in response to the request signal. In some examples, a signal may also be actively output by feature circuit 130 to detection terminal 212, and line side control circuit 240 may determine that line side interface 210 is connected to host interface 120 based on the actively output signal. Some exemplary embodiments will be specifically described below.

Illustratively, the in-situ detection circuit 241 is configured to determine whether the detection terminal 212 is connected to the ultrasound imaging device 100 based on the impedance at which the detection terminal 212 is connected.

For example, as shown in fig. 3, the feature circuit 130 includes an impedance circuit 131 having a preset impedance value. The bit detection circuit 241 is configured to detect an impedance of the connection of the detection terminal 212, and determine whether the detection terminal 212 is connected to the feature circuit 130 according to the impedance of the connection of the detection terminal 212.

For example, the impedance circuit 131 includes a resistor of a preset resistance value, and when the in-place detection circuit 241 detects that the impedance of the connection of the detection terminal 212 is within a resistance value range determined according to the resistance value of the resistor, it may be determined that the detection terminal 212 is connected to the feature circuit 130, thereby determining that the line-side interface 210 is connected to the host interface 120.

For example, the impedance circuit 131 includes a resistor with a preset resistance value. If the line-side interface 210 is connected to the host interface 120, the line-side interface 210 can provide a current or voltage signal to the impedance circuit 131, and the impedance circuit 131 outputs a feedback voltage signal to the line-side interface 210 through the host interface 120. Since the magnitude of the current signal provided by the line-side interface 210 is within a preset range and the resistance value of the impedance circuit 131 is constant, the feedback voltage signal provided by the impedance circuit 131 is a voltage signal within a preset voltage range, and the feedback voltage signal within the preset voltage range is a device signal detected as a characteristic signal by the line-side control circuit 240. If the line-side interface 210 is connected to another device with a magnetic element, the line-side control circuit 240 determines that the power supply device 200 is not connected to the ultrasound imaging device 100, and does not turn on the power supply module 220 and the line-side interface 210 to supply power to the outside, as long as the other device cannot provide a feedback voltage signal falling within a preset voltage range, based on the result that the characteristic signal is not detected.

As shown in fig. 3, the impedance circuit 131 may further include a first delay circuit 132 for stabilizing the impedance of the connection of the detection terminal 212 at a preset impedance value after a first preset period of time after the connection of the host interface 120 with the line-side interface 210. As described above, the resistance value of the impedance circuit 131 is substantially fixed, and it is described herein that the impedance connected to the detection terminal 212 is stable after the first preset time period, which is not to say that the resistance value of the impedance circuit 131 itself is changed, but that the feedback electrical signal output from the impedance circuit 131 to the detection terminal 212 is stable after the first preset time period, for example, is stable in the preset voltage range, due to the effect of the first delay circuit 132. Therefore, under the action of the first delay circuit 132, the in-situ detection circuit 241 may detect the characteristic signal characterizing the ultrasonic imaging apparatus 100 for a first preset period of time. That is, the bit detection circuit 241 can detect that the impedance of the connection of the detection terminal 212 is the impedance of the preset resistance value after the first preset time period.

For example, the first delay circuit 132 includes a capacitance and/or an inductance. When the line side interface 210 and the host interface 120 are connected such that the detection terminal 212 is connected to the impedance circuit 131, the detection terminal 212 applies a voltage or a current to the impedance circuit 131, and since the voltage of the capacitor and the current of the inductor in the first delay circuit 132 cannot be changed suddenly, the resistor in the impedance circuit 131 can output a voltage and a current which reach stability after a period of time, and the stable impedance value of the impedance circuit 131 can be detected by the in-place detection circuit 241.

Illustratively, if the line side interface 210 and the host interface 120 have no stable connection, for example, there is a foreign object on the line side interface 210 and/or the host interface 120 or a foreign object between the line side interface 210 and the host interface 120, the stable impedance value of the impedance circuit 131 cannot be detected by the in-situ detection circuit 241, so that a situation in which the line side interface 210 and the host interface 120 have no stable connection may be detected. In this case, the line side control circuit 240 does not control the first control switch 230 to be turned on, so that the power module 220 does not supply power to the line side interface 210, and thus no abnormal discharge spark and a large temperature rise of connection impedance generated at the time of unstable connection are generated between the line side interface 210 and the host interface 120.

For example, as shown in fig. 4, the bit detection circuit 241 may include a first comparator OA1 and a second comparator OA2; the first input terminal +in of the first comparator OA1 is connected to the first reference voltage Vref1, the second input terminal-IN of the second comparator OA2 is connected to the second reference voltage Vref2 lower than the first reference voltage Vref1, the second input terminal-IN of the first comparator OA1 and the first input terminal +in of the second comparator OA2 are connected to the detection terminal 212, and the output terminal OUT1 of the first comparator OA1 and the output terminal OUT2 of the second comparator OA2 are connected to the first control switch 230.

When the device signal output by the detection terminal 212 is greater than the second reference voltage Vref2 and less than the first reference voltage Vref1, the first comparator OA1 or the second comparator OA2 outputs a first control signal to the first control switch 230, so that the first control switch 230 is turned on.

The bit detection circuit 241 of fig. 4 allows the first control switch 230 to be turned on only when a device signal between two reference voltage ranges is detected by the control of the first reference voltage Vref1 and the second reference voltage Vref 2. On the other hand, the bit detection circuit 241 of fig. 4 may also function as a short circuit detection circuit to protect against short circuits. If a short circuit occurs between the line side interface 210 and the host interface 120, the voltage signal output from the detection terminal 212 to the in-place detection circuit 241 will be reduced below the second reference voltage Vref2, and the line side control circuit 240 can control the first control switch 230 to be turned off, so as to avoid the equipment hazard caused by the short circuit.

In an embodiment, which is not shown, the bit detection circuit 241 may use only one comparator, and output the first control signal according to the comparison result of the device signal output from the detection terminal 212 and a built-in reference voltage.

Illustratively, in another example as shown in fig. 5, the feature circuit 130 may include a first memory 133 storing a feature signal, and the line side interface 210 further includes a communication terminal 213. The communication terminal 213 is used for being in signal connection with the feature circuit 130 through another communication terminal correspondingly arranged on the host interface 120 when the line side interface 210 is connected with the host interface 120; the bit detection circuit 241 reads the characteristic signal in the first memory 133 through the communication terminal 213.

The first memory 133 may be, for example, a memory on the motherboard 112 of the ultrasound imaging device 100 or a memory on a circuit board near the host interface 120.

For example, as shown in fig. 5, the line side interface 210 may include a hall element 214, and the host interface 120 is provided with a third magnetic member 122, where the hall element 214 corresponds to the position of the third magnetic member 122 when the line side interface 210 is connected to the host interface 120. The line side control circuit 240 is configured to detect an output of the hall element 214, and determine whether the line side interface 210 is connected to the host interface 120 according to the output of the hall element 214.

Specifically, the third magnetic member 122 may be a magnetic member independent of the second magnetic member 121, or may be the second magnetic member 121 itself.

Specifically, the in-bit detection circuit 241 of the line side control circuit 240 receives the output of the hall element 214, and if the magnetic field in which the hall element 214 is located is strong enough, it is determined that the line side interface 210 is connected to the host interface 120.

In other embodiments, as shown in fig. 6, the host interface 120 includes a host hall element 10, where the wire side interface 210 is provided with a fourth magnetic member 20, and the host hall element 10 corresponds to the fourth magnetic member 20 when the wire side interface 210 is connected to the host interface 120. The line side control circuit 240 is configured to detect an output of the host hall element 10 through the input terminal 30, and determine whether the line side interface 210 is connected to the host interface 120 according to the output of the host hall element 10.

The fourth magnetic element 20 may be a magnetic element independent of the first magnetic element 211, or may be the first magnetic element 211 itself.

For example, the host interface 120 is provided with an output terminal 11 of the host hall element 10, the line side interface 210 is provided with an input terminal 30 of a signal of the host hall element 10, and the input terminal 30 is connected to the line side control circuit 240. The signal output from the host hall element 10 on the host interface 120 is transmitted to the line side control circuit 240 via the output terminal 11 and the input terminal 30, and the line side control circuit 240 can determine whether the line side interface 210 is connected to the host interface 120 based on the signal from the input terminal 30.

In some embodiments, as shown in fig. 5, the line side control circuit 240 may further include a first power-on control circuit 242 connected to the first control switch 230. The first power-on control circuit 242 is configured to gradually increase the voltage and/or current output by the control line side interface 210 to the host interface 120 to the load rated voltage and/or load rated current when the first control switch 230 is turned on. For example, the first power-up control circuit 242 may control the voltage and/or current output by the line-side interface 210 to the host interface 120 to gradually rise from zero to the load rated voltage and/or load rated current.

Illustratively, the first power-on control circuit 242 is connected between the bit detection circuit 241 and the first control switch 230.

Illustratively, when the bit detection circuit 241 detects a characteristic signal of the ultrasonic imaging apparatus 100 or the line side control circuit 240 determines that the line side interface 210 is connected to the host interface 120 according to the output of the hall element 214, the first power-on control circuit 242 controls the operating state of the first control switch 230 to gradually transition to the saturation region via the linear region. Wherein, when the first control switch 230 operates in the linear region, the voltage and/or current output by the line side interface 210 to the host interface 120 gradually increases; when the first control switch 230 is fully turned on during the saturation region, the voltage and/or current output by the line side interface 210 to the host interface 120 reaches the load rated voltage and/or load rated current.

It will be appreciated that the voltage and/or current output to the host interface 120 through the control line interface 210 gradually rises to the load rated voltage and/or load rated current, further preventing abnormal spark discharge from occurring when the line interface 210 and the host interface 120 are connected. But also avoids the shock of the ultrasound imaging device 100 from the host interface 120 suddenly accessing a larger voltage and/or current.

In some embodiments, as shown in fig. 7, the power supply apparatus 200 may further include a second delay circuit 250 connected to the first control switch 230 for communicating the line-side interface 210 and the power module 220 to supply power to the host interface 120 after a preset period of time has elapsed when the line-side control circuit 240 detects that the line-side interface 210 is connected to the host interface 120, for example, when the line-side control circuit 240 detects that the device signal is a characteristic signal characterizing the ultrasonic imaging device 100.

The second delay circuit 250 can be beneficial to controlling the first control switch 230 to be turned on under the condition that the line side interface 210 and the host interface 120 are stably connected, so that the power module 220 supplies power to the line side interface 210, and a large temperature rise and abnormal discharge ignition caused by connection impedance when the line side interface 210 and the host interface 120 are not stably connected are prevented.

Illustratively, power supply 200 includes a first power-on control circuit 242, or includes a second delay circuit 250, or includes both a first power-on control circuit 242 and a second delay circuit 250.

In some embodiments, the line side control circuit 240 may be configured to determine whether the line side power down condition is satisfied when the magnetic attraction of the first magnetic member 211 and the second magnetic member 121 is released, and to control the first control switch 230 to be turned off to disconnect the power supply module 220 from the line side interface 210 when the line side power down condition is determined to be satisfied. When the line side control circuit 240 detects that the power supply device is not connected to the ultrasound imaging apparatus, it may determine that the line side power down condition is satisfied.

Therefore, when the magnetic type interface of the power supply device 200 is pulled out from the magnetic type interface of the ultrasonic imaging equipment 100, the power supply module 220 of the power supply device 200 is disconnected with the line side interface 210, the power supply for the line side interface 210 is stopped, and the problem of interface sparking during separation of the magnetic type interface can be avoided.

For example, if the line side control circuit 240 detects that the line side interface 210 is not connected to the host interface 120, a third control signal is sent to the first control switch 230 to turn off the first control switch 230 to disconnect the line side interface 210 from the power module 220.

Illustratively, the in-situ detection circuit 241 of the line-side control circuit 240 detects the device signal output by the detection terminal 212 of the line-side interface 210, and detects whether the signal received from the detection terminal 212 belongs to a characteristic signal that characterizes the ultrasound imaging device 100.

Specifically, when the magnetic attraction of the first magnetic element 211 and the second magnetic element 121 is released, if the characteristic signal is not detected by the in-place detection circuit 241, it is determined that the magnetic attraction of the first magnetic element 211 and the second magnetic element 121 is released, and the wire-side interface 210 is not connected to the host interface 120; the line side control circuit 240 may thus send a third control signal to the first control switch 230 to cause the first control switch 230 to open to disconnect the line side interface 210 from the power module 220.

Specifically, if the in-situ detection circuit 241 detects that the device signal is a characteristic signal that is not characteristic of the ultrasound imaging device 100, a third control signal is sent to the first control switch 230 to cause the first control switch 230 to open to disconnect the line-side interface 210 from the power module 220. The detection of the characteristic signal helps the line side control circuit 240 accurately detect the ultrasonic imaging apparatus 100, and does not supply power to other non-ultrasonic imaging apparatuses, or supplies power to the outside when the other magnetic parts are accidentally turned on, thereby further improving the power supply safety.

In some embodiments, as shown in fig. 7, the power supply device 200 may further include a first sampling circuit 260 connected between the line side interface 210 and the power module 220, the first sampling circuit 260 being configured to sample a current transmitted from the power module 220 to the line side interface 210. For example, the first sampling circuit 260 includes a sampling resistor disposed between the power module 220 and the first control switch 230.

The line side control circuit 240 detects the sampling current transmitted to the line side interface 210 by the power module 220 through the first sampling circuit 260, and disconnects the line side interface 210 and the power module 220 when the sampling current of the line side interface 210 is not less than the first overcurrent threshold.

Illustratively, as shown in fig. 7, the line side control circuit 240 further includes a short circuit detection circuit 243, the short circuit detection circuit 243 connecting the first sampling circuit 260 and the first power-on control circuit 242. The short circuit detection circuit 243 determines whether the sampling current of the first sampling circuit 260 is not less than the first overcurrent threshold, and when the sampling current is not less than the first overcurrent threshold, the short circuit detection circuit 243 sends a signal to the first power-on control circuit 242, and the first power-on control circuit 242 controls the first control switch 230 to be turned off according to the signal.

The short circuit detection circuit 243 can implement over-current protection, for example, when a foreign object on the line side interface 210 causes a terminal short circuit, and the current transmitted to the line side interface 210 by the power module 220 exceeds the first over-current threshold, the first control switch 230 can be controlled to be turned off, so as to stop transmitting electric energy to the line side interface 210, and avoid damage to the power supply device 200 caused by over-current.

In some embodiments, as shown in fig. 8, the line side control circuit 240 includes a first temperature sensor 244 that is temperature sensitive, the first temperature sensor 244 being disposed at the line side interface 210 for detecting a temperature at the line side interface 210.

Illustratively, the line side control circuit 240 is configured to disconnect the line side interface 210 from the power module 220 when the temperature of the line side interface 210 is not less than a first temperature threshold. Realize the temperature protection to the interface, avoid continuously generating heat when interface temperature is too high.

In some embodiments, the first temperature sensor 244 may include a first self-healing temperature fuse disposed at the line side interface 210, connected between the line side interface 210 and the power module 220, for example, between the first control switch 230 and the line side interface 210. When the temperature value of the line side interface 210 exceeds the temperature threshold, the first self-recovery temperature fuse automatically blows, so that the line side interface 210 and the power module 220 are disconnected, and the power module 220 stops continuously supplying power to the line side interface 210; when the temperature of the line side interface 210 is restored to a lower temperature, the first self-restoring temperature fuse restores the connection, and the power module 220 may supply power to the line side interface 210. It will be appreciated that the temperature control in this embodiment may not require the first control switch 230, but rather the line side interface 210 and the power module 220 are disconnected by the first self-healing temperature fuse.

As illustrated in fig. 9, the line side control circuit 240 may further include a first on-off control circuit 245, and the first on-off control circuit 245 is connected to the line side interface 210 and the first control switch 230. Specifically, the first on-off control circuit 245 is further connected to the first temperature sensor 244, detects the state of the first temperature sensor 244, and disconnects the line-side interface 210 from the power module 220 according to the state of the first temperature sensor 244. In this example, the first on-off control circuit 245 disconnects the line-side interface 210 and the power module 220 by turning off the first control switch 230.

The first temperature sensor 244 is illustratively in a different state when the temperatures are different, such as a self-healing temperature fuse being in an off state when the temperatures are higher and in an on state when the temperatures are lower. The first on-off control circuit 245 may determine whether the connection between the line side interface 210 and the power module 220 needs to be disconnected by detecting the state of the first temperature sensor 244.

For example, as shown in fig. 9, the first temperature sensor 244 may include a first temperature sensor 2441 disposed at the line side interface 210; the first on-off control circuit 245 reads the temperature of the line-side interface 210 from the first temperature sensor 2441, and disconnects the line-side interface 210 and the power module 220 when the temperature of the line-side interface 210 is not less than a first temperature threshold.

Illustratively, the first on-off control circuit 245 includes a control chip; the control chip is connected to the first temperature sensor 2441 and the first control switch 230; when the control chip controls the first control switch 230 to be turned off, the connection between the line-side interface 210 and the power module 220 is disconnected.

It will be appreciated that as shown in fig. 9, the on-bit detection circuit 241 of the line side control circuit 240 may be connected to the first on-off control circuit 245 for detecting whether the line side interface 210 is connected to the host interface 120. The first on-off control circuit 245 communicates the line-side interface 210 and the power module 220 to supply power to the host interface 120 when the on-position detection circuit 241 detects that the line-side interface 210 is connected to the host interface 120. After the power supply device 200 is successfully connected with the magnetic part of the ultrasonic imaging equipment 100, the power supply device 200 supplies power to the ultrasonic imaging equipment 100, abnormal discharge spark can not be generated in the process, and the large temperature rise generated by the large impedance of the magnetic adsorption connection mode at the moment of interface contact can be avoided, so that the safety of a later-stage load can be protected, and the service life of the later-stage load can be prolonged.

It is understood that the first on-off control circuit 245 may further include a first power-on control circuit 242. The first power-on control circuit 242 is configured to control the voltage and/or current output from the line-side interface 210 to gradually rise to the load rated voltage and/or load rated current when the first power-on control circuit 245 communicates between the line-side interface 210 and the power module 220. It is possible to further prevent abnormal spark discharge from occurring when the line-side interface 210 and the host interface 120 are connected. But also avoids the shock of the ultrasound imaging device 100 from the host interface 120 suddenly accessing a larger voltage and/or current.

For example, the first on-off control circuit 245 may be provided in a power adapter of the power module 220 or on a power line of the power module 220.

For example, as shown in fig. 10, the first temperature sensor 244 may include a first temperature sensor 2441 provided at the line side interface 210, the first temperature sensor 2441 for outputting a line side temperature value that varies according to the temperature of the line side interface 210. The line side control circuit 240 is further configured to disconnect the line side interface 210 from the power module 220 when the line side temperature value is not less than the first temperature threshold.

Illustratively, the first temperature sensor 2441 is coupled to the first power-on control circuit 242 of the line-side control circuit 240. The first power-on control circuit 242 may control the first control switch 230 to be turned off when the temperature value of the line side interface 210 exceeds the first temperature threshold according to the line side temperature value acquired from the first temperature sensor 2441, so as to stop the power supply of the power module 220 to the line side interface 210, and prevent the temperatures at the line side interface 210 and the host interface 120 from continuously rising.

In some implementations, the line side control circuit 240 is also used to implement: if the characteristic signal is not detected, the first control switch 230 is controlled to be turned off to disconnect the line side interface 210 and the power module 220. Therefore, when the line side interface 210 and the host interface 120 are not connected, the power module 220 does not supply power to the line side interface 210, the line side interface 210 is not electrified, and short-circuit discharge caused by foreign matter contacting the line side interface 210 is prevented.

In some embodiments, as shown in fig. 7, the ultrasound imaging device 100 further includes a device control circuit 150, the device control circuit 150 for controlling the connection of the host interface 120 to the load 110.

Illustratively, the ultrasound imaging device 100 further includes a second control switch 140, the second control switch 140 being coupled to the host interface 120 and the load 110 for controllably switching between on and off states to connect or disconnect the host interface 120 and the load 110.

The device control circuit 150 is respectively connected to the second control switch 140 and the host interface 120, and is configured to send a second control signal to the second control switch 140 when detecting that the voltage and/or the current output by the host interface 120 is not less than a preset connection threshold, so as to connect the host interface 120 and the load 110 to enable the host interface 120 to supply power to the load 110.

Illustratively, when the line side control circuit 240 of the power supply apparatus 200 detects that the device signal output by the line side interface 210 is a characteristic signal representing the ultrasound imaging device 100, the line side interface 210 and the power module 220 are connected to supply power to the host interface 120. The device control circuitry 150 may detect the voltage and/or current output by the host interface 120.

If the voltage and/or current output by the host interface 120 reaches a preset connection threshold, for example, the connection threshold is 70% -100% of the rated load voltage and/or rated load current of the load 110, it may be indicated that the line side interface 210 and the host interface 120 are stably connected, and the device control circuit 150 controls the second control switch 140 to be turned on, so that the host interface 120 provides the load 110 with electric energy.

In some embodiments, the voltage and/or current output by the line-side interface 210 to the host interface 120 gradually increases to the load rated voltage and/or load rated current, and the device control circuit 150 detects that the voltage and/or current output by the host interface 120 also gradually increases, and when the voltage and/or current output by the host interface 120 increases to reach the connectivity threshold, the host interface 120 may be caused to provide power to the load 110. The host interface 120 may be prevented from suddenly providing a large voltage and/or current to the load 110 to impact the ultrasound imaging device 100.

Illustratively, as shown in FIG. 7, the device control circuit 150 includes a power-up/power-down detection circuit 151 for detecting the voltage and/or current output by the host interface 120. For example, when the power-up/power-down detection circuit 151 detects that the voltage and/or the current output by the host interface 120 reaches a preset connection threshold, the device control circuit 150 outputs a signal for controlling the second control switch 140 to be turned on. For example, the power-up/power-down detection circuit 151 may include a voltage sampling circuit for detecting the voltage output from the host interface 120, and the device control circuit 150 may then detect whether the output voltage reaches a preset voltage-on threshold.

As illustrated in fig. 7, the device control circuit 150 further includes a second power-on control circuit 152 connected to the second control switch 140, and the second power-on control circuit 152 is further connected to a power-on/power-off detection circuit 151 for controlling the voltage and/or current output from the host interface 120 to the load 110 to gradually rise to the load rated voltage and/or load rated current when the host interface 120 is in communication with the load 110. The host interface 120 may be further prevented from suddenly providing a large voltage and/or current to the load 110 to impact the ultrasound imaging device 100.

Illustratively, the power-up/power-down detection circuit 151 outputs a signal to the second power-up control circuit 152 when the voltage and/or current output by the host interface 120 is not less than a preset connectivity threshold; the second power-on control circuit 152 controls the working state of the second control switch 140 to gradually switch to the saturation region through the linear region according to the signal. Wherein the second control switch 140 operates in the linear region, and the voltage and/or current output from the host interface 120 to the load 110 gradually increases; when the second control switch 140 is fully turned on during the saturation region, the voltage and/or current output by the host interface 120 to the load 110 reaches the load rated voltage and/or load rated current of the load 110.

In some embodiments, as shown in fig. 7, the device control circuit 150 may also be configured to determine whether a host power down condition is satisfied when the magnetic attraction of the first magnetic member 211 and the second magnetic member 121 is released, and to control the second control switch 140 to be turned off to disconnect the host interface 120 from the load 110 when it is determined that the host power down condition is satisfied. When the device control circuit 150 detects that the voltage and/or current output by the host does not reach the connection threshold, it considers that there is an unstable connection (for example, unstable connection caused by the connection of the magnetic element is released) at present, and determines that the power-down condition of the host is satisfied.

Therefore, when the magnetic attraction type interface of the power supply device 200 is pulled out from the magnetic attraction type interface of the ultrasonic imaging equipment 100, the connection between the host interface 120 and the load 110 can be disconnected, and the problem that the interface is ignited when the host interface 120 and the line side interface 210 of the power supply device 200 are separated due to the fact that electric energy stored by capacitance, inductance and the like in the load 110 is transmitted to the host interface 120 can be prevented. It is also possible to prevent damage to the load 110 caused by conduction of discharged energy to the load 110 when a charged device such as the power supply apparatus 200 is abnormally discharged to the host interface 120.

For example, in the process of releasing the magnetic attraction between the first magnetic member 211 and the second magnetic member 121, the voltage and/or current output by the host interface 120 may decrease with the release operation, and the device control circuit 150 detects the voltage and/or current output by the host interface 120, and sends a fourth control signal to the second control switch 140 to disconnect the second control switch 140 when detecting that the voltage and/or current output by the host interface 120 is less than the preset connection threshold value, so as to disconnect the host interface 120 from the load 110 before releasing the magnetic attraction between the first magnetic member 211 and the second magnetic member 121.

Specifically, when the voltage and/or current output by the host interface 120 is less than the preset connection threshold, it is determined that the connection between the host interface 120 and the line-side interface 210 of the power supply device 200 is disconnected, or the connection is unstable, so that the load 110 cannot be supplied with the electric energy meeting the requirements. At this time, the host interface 120 and the load 110 are disconnected, thereby protecting the load 110.

The power-up/power-down detection circuit 151 of the device control circuit 150 may include, for example, a voltage sampling circuit, and may be configured to detect a voltage output by the host interface 120, where the power-up/power-down detection circuit 151 may then detect whether the voltage output by the host interface 120 reaches a preset voltage connection threshold.

Illustratively, the ultrasound imaging device 100 further includes a second sampling circuit connected between the host interface 120 and the load 110; for example, the second sampling circuit includes a sampling resistor disposed between the host interface 120 and the load 110. The device control circuit 150 detects the sampling current transmitted by the host interface 120 to the load 110 through the second sampling circuit, and controls the second control switch 140 to be turned off when the sampling current acquired by the host interface 120 is not less than the second overcurrent threshold.

Thus, the over-current protection of the ultrasonic imaging device 100 can be realized, for example, when the load 110 is short-circuited, if the current transmitted to the load 110 by the host interface 120 exceeds the second over-current threshold value, the second control switch 140 can be controlled to be turned off, so that the power transmission to the load 110 can be stopped, and the damage of the over-current to the load 110 can be avoided.

In some embodiments, in the process of releasing the magnetic attraction of the first magnetic member 211 and the second magnetic member 121, the device control circuit 150 controls the second control switch 140 to be turned off before the line side control circuit 240 controls the first control switch 230 to be turned off, so as to more sensitively protect the ultrasonic imaging device 100.

In some embodiments, as shown in fig. 11, the load 110 of the ultrasound imaging device 100 includes a processor 101 connected to a host interface 120, the processor 101 being disposed, for example, on a motherboard 112 of the ultrasound imaging device 100.

Illustratively, the ultrasound imaging device 100 also includes a voltage detection circuit 160.

The voltage detection circuit 160 is, for example, connected to the second control switch 140 and the processor 101, and is configured to output an effective detection signal to the processor 101 when detecting that the voltage output by the second control switch 140 reaches the preset operating voltage, and the processor 101 enables the second control switch 140 to supply power to the load 110 according to the effective detection signal.

Wherein the preset operating voltage is, for example, equal to the load rated voltage of the load 110. The processor 101 enables the load 110 to operate only when the voltage output by the second control switch 140 reaches the preset operating voltage. Preventing the load 110 from malfunctioning when the voltage is insufficient, such as inaccurate ultrasonic echo detection, etc.

In some embodiments, the ultrasound imaging device 100 may further include a rechargeable battery 170, and the power supply 200 may charge the rechargeable battery 170 of the ultrasound imaging device 100, for example, by charging the rechargeable battery 170 through the line-side interface 210, the host interface 120, and the second control switch 140. Thus, when the ultrasound imaging apparatus 100 is not connected to the power supply device 200, the load 110 of the ultrasound imaging apparatus 100 may obtain electric energy through the rechargeable battery 170, and when the ultrasound imaging apparatus 100 is connected to the power supply device 200, it may be selected to obtain electric energy through the power supply device 200 or obtain electric energy through the rechargeable battery 170.

In some embodiments, as shown in fig. 8, the device control circuit 150 includes a second temperature sensor 153 that is temperature sensitive, the second temperature sensor 153 being disposed at the host interface 120.

The device control circuit 150 is illustratively configured to disconnect the host interface 120 from the load 110 when the temperature of the host interface 120 is not less than the second temperature threshold. Realize the temperature protection to the interface, avoid continuously generating heat when interface temperature is too high.

For example, the second temperature sensor 153 includes a second self-healing temperature fuse connected between the host interface 120 and the load 110; for example, a second self-healing temperature fuse, is connected between the host interface 120 and the second control switch 140. When the temperature value of the host interface 120 exceeds the temperature threshold, the second self-healing temperature fuse automatically blows, thereby disconnecting the host interface 120 from the load 110, and stopping the host interface 120 from continuing to supply power to the load 110. It will be appreciated that the temperature control in this embodiment may not require the second control switch 140, but rather disconnect the host interface 120 from the load 110 via the first self-healing temperature fuse.

Illustratively, as shown in fig. 9, the second temperature sensor 153 includes a second temperature sensor 1531 disposed at the host interface 120; the second temperature sensor 1531 is for outputting a host side temperature value that varies according to the temperature of the host interface 120. The line side control circuit 240 is further configured to control the second control switch 140 to be turned off to disconnect the host interface 120 and the load 110 when the host side temperature value is not less than the second temperature threshold value.

As illustrated in fig. 9, the device control circuit 150 further includes a second on-off control circuit 154 connected to the second temperature sensor 1531, the second on-off control circuit 154 being connected to the host interface 120 and the second control switch 140. The second switching control circuit 154 reads the temperature of the host interface 120 from the second temperature sensor 1531, and disconnects the host interface 120 and the load 110 when the temperature of the host interface 120 is not less than the second temperature threshold. The second on-off control circuit 154 in this example disconnects the host interface 120 from the load 110 by controlling the second control switch 140 to open.

The second on/off control circuit 154 may be connected to the power-on/off detection circuit 151, and when the power-on/off detection circuit 151 detects that the voltage and/or current output by the host interface 120 is not less than a preset on threshold, the host interface 120 and the load 110 are connected, and the host interface 120 supplies power to the load 110.

It is appreciated that the second on-off control circuit 154 may include a second power-on control circuit 152. The second power-on control circuit 152 is configured to control the voltage and/or current output by the host interface 120 to gradually rise to the load rated voltage and/or load rated current when the second power-off control circuit 154 is connected to the host interface 120 and the load 110.

It is understood that the second on/off control circuit 154 may include a control chip, and the second power-on control circuit 152 may be a built-in circuit of the control chip or a peripheral circuit of the control chip. When the second power-on control circuit 152 is a peripheral circuit, the control chip is connected with the power-on/power-off detection circuit 151 and the second power-on control circuit 152, and when the control chip controls the second control switch to be turned on according to the output of the power-on/power-off detection circuit 151, the second power-on control circuit 152 controls the voltage and/or current output by the host interface 120 to gradually rise to the load rated voltage and/or load rated current.

It is understood that the bit detection circuit 241, the first power-on control circuit 242, the short circuit detection circuit 243, the second delay circuit 250, etc. of the power supply apparatus 200 may be composed of discrete elements, for example, an operational amplifier circuit, an RC circuit.

It is understood that the power supply device 200 may also include one or more control chips, such as a single-chip microcomputer chip. For example, the bit detection circuit 241 includes a control chip, and the first power-on control circuit 242 includes a control chip; or bit detection circuit 241, first power-on control circuit 242, short circuit detection circuit 243, and second delay circuit 250 are implemented by the same control chip.

It will be appreciated that the in-place detection circuit 241, the first power-on control circuit 242, the short circuit detection circuit 243, the second delay circuit 250, etc. of the power supply apparatus 200 may be partially composed of discrete components, or may be partially composed of a control chip.

It will be appreciated that the power up/down detection circuit may be a power up detection circuit, a power down detection circuit or a power up and power down detection circuit. It will be appreciated that the ultrasonic imaging apparatus of the present application may be a portable ultrasonic imaging apparatus with a rechargeable battery, and the portable ultrasonic imaging apparatus mainly includes a main body, and a flip cover rotatably mounted on the main body, and the main body may include a housing, and the second magnetic member 121 may be disposed on a left side, a right side, or a rear side of the main body (housing).

In some embodiments, the power up and power down control process of the ultrasound imaging system of the present application is as follows:

(1) And (3) power-on process:

Before the host interface 120 of the ultrasonic imaging apparatus 100 is connected to the line-side interface 210 of the power supply device 200, the detection terminal 212 of the line-side interface 210 does not receive the characteristic signal output by the host interface 120, and the line-side control circuit 240 controls the first control switch 230 to be turned off, the power module 220 is turned off from the line-side interface 210, and the line-side interface 210 does not supply power to the host interface 120;

After the line-side interface 210 and the host interface 120 are magnetically attracted and connected, the feature circuit 130 may feed back a feature signal, such as a voltage signal, to the detection terminal 212 through the host interface 120, and the line-side control circuit 240 determines that the line-side interface 210 is connected to the host interface 120 according to the feature signal, may control the first control switch 230 to be turned on, so that the line-side interface 210 may supply power to the host interface, or may further control the line-side interface 210 through the first power-on control circuit 242 to output a voltage and/or a current gradually rising to a load rated voltage and/or a load rated current to the host interface 120;

When the host interface 120 of the ultrasonic imaging apparatus 100 receives the voltage and/or current provided by the line-side interface 210, the power-on/power-off detection circuit 151 of the ultrasonic imaging apparatus detects whether the voltage and/or current output by the host interface reaches the connection threshold, and the second control switch 140 is turned on after the voltage and/or current reaches the connection threshold, so that the host interface 120 can supply power to the load 110, or the host interface 120 can be further controlled by the second power-on control circuit 152 to output the voltage and/or current gradually rising to the load rated voltage and/or the load rated current to the load 110;

the ultrasonic imaging apparatus 100 may further provide a voltage detection circuit 160 between the second control switch 140 and the load 110, where the voltage detection circuit 160 outputs a valid detection signal to the processor 101 when it is determined that the voltage output by the second control switch 140 reaches the preset operating voltage, and the processor 101 further enables the second control switch 140 to supply power to the load 110.

The power-on control process relates to detection control links such as interface connection detection, line side power-on control, host side power-on detection, host side power-on control, host side voltage control and the like. Some embodiments of the application can include all or part of the detection control links, so that the conditions of accidental ignition, temperature rise and the like in the connection process of the magnetic interface are avoided, and the safety of equipment is protected.

(2) Power-off control:

When the magnetic connection between the connected ultrasonic imaging apparatus 100 and the power supply device 200 is released, the connection between the host interface 120 and the line-side interface 210 is about to be disconnected to enter a state of unstable connection, the power-on/power-off detection circuit 151 of the ultrasonic imaging apparatus 100 detects that the voltage and/or current output by the host interface is lower than the connection threshold, and the apparatus control circuit 150 controls the second control switch 140 to be disconnected accordingly, so that the rear-stage load 110 is disconnected from the circuit of the ultrasonic imaging system;

After the magnetic connection between the host interface 120 and the line-side interface 210 is disconnected, the detection terminal 212 cannot continuously receive the characteristic signal fed back by the host interface 120, and the line-side control circuit 240 controls the first control switch 230 to be disconnected, so that the power module 220 does not supply power to the line-side interface 210 any more.

The power-off control process relates to detection control links such as power-off detection of a host side, interface connection detection and the like. Some embodiments of the application can include all or part of the detection control links, so that any accidental ignition temperature rise and other conditions are avoided when the connection of the magnetic interface is released, and the safety of equipment is protected.

Referring to fig. 12 in combination with the above embodiment, fig. 12 shows a power-off control method of an ultrasound imaging system according to an embodiment of the present application.

As shown in fig. 12, the power-down control method of the ultrasonic imaging system includes step S110.

And step S110, when the magnetic attraction of the first magnetic piece and the second magnetic piece is released, the equipment control circuit controls the second control switch to enter an off state so as to disconnect the load from the host interface.

The device control circuit may control the second control switch to enter an off state, including:

Detecting voltage and/or current output by the line side interface to the host interface;

And if the voltage and/or the current output by the host interface is smaller than a preset connection threshold value, sending a fourth control signal to the second control switch to disconnect the second control switch.

Illustratively, the power supply apparatus further includes:

a first control switch connected with the power module and the line side interface for controllably switching between on and off states so as to connect or disconnect the power module and the line side interface; and

The line side control circuit is respectively connected with the line side interface and the first control switch signal;

The method further comprises the steps of: when the magnetic attraction of the first magnetic piece and the second magnetic piece is released, the line side control circuit controls the first control switch to enter an off state so as to disconnect the power supply module from the line side interface.

The line side control circuit controls the first control switch to enter an off state, including:

Detecting whether the line side interface is connected with a host interface of the ultrasonic imaging device;

And if the line side interface is not connected to the host interface, sending a third control signal to the first control switch to disconnect the first control switch so as to disconnect the line side interface and the power supply module.

Illustratively, the line side interface includes a detection terminal for electrically connecting with the ultrasound imaging device;

The detecting whether the line-side interface is connected with a host interface of the ultrasonic imaging device comprises:

Detecting whether the signal received from the detection terminal belongs to a characteristic signal representing the ultrasonic imaging device;

and if the characteristic signal is not detected, judging that the magnetic attraction of the first magnetic piece and the second magnetic piece is released, wherein the line side interface is not connected to the host interface.

The device control circuit may be configured to control the second control switch to open before the line side control circuit controls the first control switch to open.

The specific principle and implementation manner of the power-off control method of the ultrasonic imaging system provided by the embodiment of the application are similar to those of the ultrasonic imaging system of the previous embodiment, and are not repeated here.

According to the ultrasonic imaging system and the power-off control method thereof provided by the embodiment of the application, the power supply device and the ultrasonic imaging equipment are connected in a magnetic adsorption mode, so that a user does not need to forcefully plug in and out; when the magnetic type interface of the power supply device is pulled out from the magnetic type interface of the ultrasonic imaging device, the connection between the host interface and the load is disconnected, so that the problem that the interface is ignited when the host interface and the line side interface of the power supply device are separated due to the fact that the electric energy stored by the capacitor, the inductor and the like in the load is transmitted to the host interface is solved, and the damage to the load caused by the fact that discharged energy is transmitted to the load when the charged equipment such as the power supply device is abnormally discharged to the host interface can be prevented.

It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It should be noted that the description of "first", "second", etc. used in the present specification and the appended claims is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

It should also be understood that the term "and/or" as used in the present specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

While the application has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the application. Therefore, the protection scope of the application is subject to the protection scope of the claims.

Claims

1. An ultrasound imaging system, comprising an ultrasound imaging device and a power supply device for supplying power to the ultrasound imaging device; the power supply device includes: a line side interface provided with a first magnetic member and a power supply module for providing electric energy for the line side interface;

the ultrasonic imaging apparatus includes:

The ultrasonic probe is used for transmitting ultrasonic waves to the tested object and receiving ultrasonic echoes returned from the tested object, and the main board is used for carrying out ultrasonic imaging on ultrasonic echo signals to obtain an ultrasonic image of the tested object;

And the equipment control circuit is respectively connected with the second control switch and the host interface and is used for controlling the second control switch to be disconnected before the connection between the line side interface and the host interface is disconnected by releasing the magnetic adsorption of the first magnetic piece and the second magnetic piece so as to disconnect the host interface from the load, thereby stopping the host interface from supplying power to the load.

2. The system of claim 1, wherein the device control circuitry for controlling the second control switch to open comprises: and detecting the voltage and/or current output by the host interface, and sending a fourth control signal to the second control switch when detecting that the voltage and/or current output by the host interface is reduced to be smaller than a preset connection threshold value, so that the second control switch is disconnected to disconnect the host interface and the load.

3. The system of claim 2, wherein the device control circuitry includes voltage sampling circuitry for detecting the voltage output by the host interface.

4. The system of claim 1, wherein the ultrasound imaging device further comprises a second sampling circuit connected between the host interface and the load;

The device control circuit detects the sampling current transmitted to the load by the host interface through the second sampling circuit, and controls the second control switch to be disconnected when the sampling current of the host interface is not smaller than a second overcurrent threshold.

5. The system of any one of claims 1 to 4, wherein the power supply device further comprises:

a first control switch connected with the power module and the line side interface for controllably switching between on and off states so as to connect or disconnect the power module and the line side interface;

and the line side control circuit is respectively connected with the line side interface and the first control switch signal and is used for controlling the first control switch to be disconnected when the magnetic attraction of the first magnetic piece and the second magnetic piece is released so as to disconnect the power supply module and the line side interface.

6. The system of claim 5, wherein the line side control circuit for controlling the first control switch to open comprises: and detecting a device signal output by the line side interface, and sending a third control signal to the first control switch to enable the first control switch to be disconnected when the device signal is detected to be a characteristic signal which is not used for representing the ultrasonic imaging device.

7. The system of claim 5, wherein the device control circuit controls the second control switch to open before the line side control circuit controls the first control switch to open.

8. The system of claim 6, wherein the feature circuit comprises an impedance circuit;

when the host interface is connected with the line side interface, the characteristic circuit transmits a feedback voltage signal to the line side interface according to an electric signal output by the line side interface, wherein the feedback voltage signal is the characteristic signal; the line side control circuit is also used for sending a first control signal to the first control switch when the feedback voltage signal is detected, so that the first control switch is conducted.

9. A method of controlling power down of the ultrasound imaging system of claim 1, the method comprising:

Before the magnetic attraction of the first magnetic piece and the second magnetic piece is released so that the connection between the line side interface and the host interface is disconnected, the equipment control circuit determines that a host power-down condition is met, and controls the second control switch to enter a disconnection state when the host power-down condition is determined to be met, so that the load is disconnected from the host interface, and the host interface stops supplying power to the load.

10. The method of claim 9, wherein the device control circuitry determining that the host power down condition is met controls the second control switch to enter an off state comprises:

and if the voltage and/or current output by the host interface is reduced to be smaller than a preset connection threshold value, a fourth control signal is sent to the second control switch, so that the second control switch is disconnected.

11. The method according to claim 9 or 10, wherein the power supply device further comprises:

the method further comprises the steps of: when the magnetic attraction of the first magnetic piece and the second magnetic piece is released, the line side control circuit controls the first control switch to enter an off state when determining that the line side power-down condition is met, so that the power supply module is disconnected from the line side interface.

12. The method of claim 11, wherein the line side control circuit determining to control the first control switch to enter an off state when a line side power down condition is met comprises:

13. The method of claim 12, wherein the wire side interface includes a detection terminal for electrical connection with the ultrasound imaging device;

14. The method of claim 11, wherein the device control circuit controls the second control switch to open before the line side control circuit controls the first control switch to open.