CN109808825B - Power supply control device and power supply control method for electronic transmission - Google Patents
Power supply control device and power supply control method for electronic transmission Download PDFInfo
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- CN109808825B CN109808825B CN201711174068.1A CN201711174068A CN109808825B CN 109808825 B CN109808825 B CN 109808825B CN 201711174068 A CN201711174068 A CN 201711174068A CN 109808825 B CN109808825 B CN 109808825B
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Abstract
The invention discloses a power supply control device, which is applicable to an electronic speed changer of a bicycle, and comprises: the device comprises a power supply, a motion state trigger, a controller and a power supply conveyor. The power supply provides working electric energy for the electronic transmission. The motion state trigger sends a trigger signal or a static signal. The controller comprises a signal transceiver for transmitting and receiving the variable speed signal and a timer for accumulating the idle time. When the controller receives the quiescent signal, the controller starts a timer. When the accumulated idle time reaches a first preset time, the controller sends a shutdown signal. When receiving the shutdown signal, the motion state trigger sends a power-off signal. The power supply conveyor selectively supplies or stops supplying power to the controller according to the trigger signal or the power-off signal. The invention also discloses a power supply control method of the electronic transmission.
Description
Technical Field
The present invention relates to a power control device and a power control method, and more particularly to a power control device and a power control method for supplying a working power to an electronic transmission of a bicycle.
Background
Electronic shifting systems are a milestone in the development history of bicycle kits. The common problems compared with the conventional mechanical speed change are as follows: the speed change line is stretched, the spool is damaged, etc., the electronic speed change system can control the motor to linearly advance at a constant speed, so that the motion is stable when the gears are switched; the control button installed on the handle has fixed key stroke, and the position of the button is not deviated due to the vibration of the path, so that the gear shifting is accurate and quick. The electronic transmission can also reduce chain abrasion, has simple later maintenance, and the speed change performance can not change along with the time.
Generally, a battery used in an electronic bicycle transmission system is classified into a seat tube type and a module type. The seat tube type battery is embedded in the inner wall of the seat tube or fixed on the outer side of the seat tube and can simultaneously supply electric energy required by the front speed changer and the rear speed changer. The modular battery usually has two, respectively integrated front and rear transmissions of the bicycle, each supplying electric energy to the front and rear transmissions. Because the accommodating space of the seat tube is larger than the accommodating spaces of the front and rear transmissions, the volume of the seat tube type battery is often larger than that of the modular battery during battery design, and the larger battery volume represents higher battery capacity. Therefore, for a bicycle electronic transmission system using a modular battery, the design must take into account the battery capacity limitations. In the electronic transmission system, the most power consuming parts are located in a Master Control Unit (MCU) of the handlebar and a Slave Control Unit (SCU) of the motor drive Unit. In order to save battery power consumption, a simple implementation is to put the MCU and the SCU into sleep mode when no communication link is required. However, the MCU and the SCU in the sleep mode still consume power slightly and continuously, which is designed to keep the function of waking up the MCU and the SCU at any time, but for the battery with limited capacity, the above implementation still wastes power.
Disclosure of Invention
In view of the above, the present invention provides a power control apparatus for an electronic transmission and a power control method thereof, which supply power to a controller in the electronic transmission after a sensor is triggered, and periodically adjust the power consumed by an SCU or an MCU according to the operating time of the electronic transmission, and shut down when a predetermined condition is reached, thereby sufficiently saving the battery power of the electronic transmission.
According to an embodiment of the present invention, a power control device for an electronic transmission is disclosed, which is adapted to an electronic transmission of a bicycle, and comprises: the device comprises a power supply, a motion state trigger, a controller and a power supply conveyor. The power supply is used for supplying working electric energy of the electronic transmission. The motion state trigger is electrically connected with the power supply, is arranged on the bicycle and is used for sensing the motion state of the motion state trigger, selectively sends a trigger signal or a static signal according to the motion state of the motion state trigger, and when the motion state trigger receives the shutdown signal, the motion state trigger sends a power-off signal. The controller is electrically connected with the motion state trigger and the motor driver. The controller comprises a signal transceiver and a timer. The signal transceiver is used for receiving or sending a variable speed signal for controlling the motor driver, and the timer is used for accumulating the idle time. When the controller receives the static signal, the controller starts a timer and accumulates idle time, and when the idle time reaches a first preset time, the controller sends a shutdown signal. When the controller receives the trigger signal, the controller resets the timer to accumulate the idle time again. The power supply conveyor is electrically connected with the power supply, the controller and the motion state trigger. When the power supply conveyor receives the trigger signal, the power supply conveyor provides electric energy of a power supply to the controller; when the power supply conveyor receives the power-off signal, the power supply conveyor stops supplying power to the controller.
According to an embodiment of the present invention, a power control method for an electronic transmission is applicable to a power control apparatus for an electronic transmission. The power supply control method comprises the following steps: the motion state trigger senses a static state and sends a static signal; after the controller receives the static signal, the controller starts a timer to accumulate idle time; after the idle time reaches a first preset time, the controller sends a shutdown signal; after the motion state trigger receives the shutdown signal, the motion state trigger sends a power-off signal; and after the power supply conveyor receives the power-off signal, the power supply conveyor stops supplying the electric energy of the power supply to the controller.
By the above structure, the power control device disclosed by the invention supplies the electric energy of the controller in the electronic transmission by the triggering of the motion state trigger, the controller further comprises a shutdown program, the shutdown program comprises the steps of adjusting the scanning frequency of the signal transceiver according to the idle time accumulated by the timer, and cutting off the power supply of the controller after the sensor confirms that the static time and the idle time reach the preset time, so as to save unnecessary electric energy loss of the battery.
The above description of the present invention and the following description of the embodiments are provided to illustrate and explain the spirit and principles of the present invention and to provide further explanation of the invention as claimed in the appended claims.
Drawings
Fig. 1 is a functional block diagram of a power control apparatus according to an embodiment of the invention.
Fig. 2 is a shutdown flow chart of a power control method according to an embodiment of the invention.
Fig. 3 is a flowchart illustrating a restart procedure after shutdown of a power control method according to another embodiment of the invention.
Wherein, the reference numbers:
10 power supply
20 motion state trigger
30 controller
32 signal transceiver
34 Motor driver
40 first power supply conveyor
42 second power supply conveyor
S0-S8, S21, S22 execute the steps
D11-D13, D3 judgment step
Detailed Description
The detailed features and advantages of the present invention are described in detail in the embodiments below, which are sufficient for anyone skilled in the art to understand the technical contents of the present invention and to implement the present invention, and the related objects and advantages of the present invention can be easily understood by anyone skilled in the art according to the disclosure of the present specification, the protection scope of the claims and the attached drawings. The following examples further illustrate aspects of the present invention in detail, but are not intended to limit the scope of the invention in any way.
Please refer to fig. 1. In one embodiment of the present invention, a power control apparatus for an electronic transmission is disclosed, comprising: a power supply 10, a motion state trigger 20, a controller 30, a first power supply 40, and a second power supply 42.
The power supply 10 is, for example, a lithium ion battery in a module form or a cartridge form. In practice, the power source 10 is located adjacent to the front derailleur or the rear derailleur of the bicycle. The power supply 10 is used to supply power to various components of the electronic transmission, and particularly, the manner in which the controller 30 regulates the power supply through the first power supply conveyor 40 is the focus of the power supply apparatus and the power supply method of the present invention.
The motion state trigger 20 is, for example, a gravity sensor (G-sensor) or an accelerometer (Accelerator), and provides a speed variation or a displacement variation sensed by itself. When the motion state trigger 20 is installed on the bicycle, it reflects that the bicycle body is in a moving state or in a stationary state, and correspondingly sends a trigger signal or a stationary signal. In practice, the motion state trigger 20 is usually disposed in a space capable of accommodating a front transmission or a rear transmission. The motion state trigger 20 is electrically connected to the second power supply 42 to obtain power from the power supply 10. Since the motion state trigger 20 requires a long sensing time, the second power conveyor 42 must remain enabled to ensure power supply to the motion state trigger 20. In addition, in an embodiment of the present invention, the motion state trigger 20 does not actively send the trigger signal or the static signal, but when the motion state trigger 20 receives a report signal, the motion state trigger 20 sends the trigger signal or the static signal according to the motion state sensed at that time, and when the motion state trigger 20 does not receive the report signal, the motion state trigger 20 does not send the trigger signal or the static signal. In another embodiment of the present invention, the motion state trigger 20 actively sends a trigger signal or a rest signal after sensing its own motion state.
The controller 30 is, for example, a Microprocessor (Microprocessor) or a System on Chip (System on Chip), receives the shift signal transmitted from the shift knob in a wireless or wired communication manner through the signal transceiver 32, and then the controller 30 controls the motor driver 34 to operate in a Pulse Width Modulation (PWM) manner, for example, to achieve the effect of driving the motor to adjust the shift gear set. In an embodiment of the present invention, the controller 30 is electrically connected to the motion state trigger 20 in the form of an Integrated Circuit Bus (Inter-Integrated Circuit Bus), for example, to receive the trigger signal or the static signal sensed by the motion state trigger 20.
Considering the practical application scenario of the electronic transmission installed on the bicycle, the controller 30 does not need to maintain the operating state continuously, and usually, the controller 30 only needs to start operating before the rider shifts the speed. Therefore, in order to accumulate the time (hereinafter referred to as "idle time") during which the controller 30 is not operating during several operations, the controller 30 further includes a timer for accumulating the idle time. Specifically, for the specific situation where the controller is not working, such as the controller 30 does not scan the variable speed signal through the transceiver 32, or the controller 30 does not control the motor driver 34 to operate, etc., the idle time is the sum of the durations of the above-mentioned non-working situations. When the accumulated idle time of the timer is greater than or equal to the first preset time, the controller 30 sends a shutdown signal. In other words, when the controller 30 determines that it has been idle for more than a period of time, it sends a shutdown signal to the motion state trigger 20 for shutting down the controller 30. In addition, the starting mode of idle time accumulation is additionally described: in an embodiment of the present invention, the controller 30 actively sends a report signal to request the motion state trigger 20 to respond to the current motion state, and if the controller 30 receives the static signal, the idle time is accumulated. In another embodiment of the present invention, the motion state trigger 20 actively sends a trigger signal or a static signal, and starts to accumulate the idle time when the controller 30 receives the static signal for the first time. However, the starting manner of the idle time accumulation according to the present invention is not limited to the above two embodiments.
However, if the controller 30 receives the trigger signal from the motion state trigger 20 during the accumulated idle time of the timer, the controller 30 stops the timer and clears the accumulated idle time value. In short, the controller 30 resets the timer. After the reset, the controller 30 restarts the timer, that is, after the time point of the current trigger signal, the controller 30 accumulates the idle time of itself again. Incidentally, in an embodiment of the present invention, the controller 30 passively receives the trigger signal or the stationary signal transmitted by the motion state trigger 20. In another embodiment of the present invention, the controller 30 actively sends a report signal to the motion state trigger 20 requesting the motion state trigger 20 to report the currently sensed state in real time.
In another embodiment of the present invention, in addition to presetting the first preset time to enable the controller 30 to determine whether to send the shutdown signal according to the idle time accumulated by the timer, a second preset time is preset, wherein the second preset time is smaller than the first preset time. When the accumulated idle time value of the timer is greater than or equal to the second predetermined time, the controller 30 increases the transceiving cycle of the signal transceiver 32. In other words, after the idle time exceeds the second preset time, the controller 30 first reduces the operating frequency of the communication connection, and then the controller 30 sends the shutdown signal according to the idle time exceeding the first preset time. By adjusting the second predetermined time value, the power consumption of the signal transceiver 32 can be reduced before the controller 30 is completely powered off. In practice, a third preset time, a fourth preset time …, etc. may be added, and as the cumulative value of the idle time reaches the third preset time and the fourth preset time, the transceiving cycle of the signal transceiver 32 is gradually increased, so as to further slow down the consumption rate of the power supply 10.
Please continue to refer to fig. 1. The motion state trigger 20 also receives a power off signal from the controller 30 and sends a power off signal accordingly. From one application scenario, when the motion state trigger 20 senses that the bicycle is moving, it is possible that a shift signal is about to be issued. Therefore, the controller 30 must be immediately powered on to immediately respond to the shift demand. In another application scenario, when the controller 30 is idle for more than the first predetermined time according to the value of the timer and no trigger signal is received during the idle process (corresponding to the stationary state of the bicycle lasting for the first predetermined time interval), the power source of the controller 30 should be cut off immediately to save the battery power.
In another embodiment of the present invention, the motion state trigger 20 has a motion state sensor and a power management unit. The motion state sensor is used for sensing the motion state of the motion state sensor so as to selectively send a trigger signal or a static signal. The power management unit is electrically connected with the motion state sensor, and when the power management unit receives the shutdown signal, the power management unit sends the power-off signal. In short, the motion state trigger 20 can also be implemented by a modular design, in which the sensing function and the power management function are implemented separately, so as to improve the flexibility of the motion state trigger 20 in practical application.
With respect to the controller 30 and the power supply portion of the motion state trigger 20, as shown in fig. 1: the first power supply 40 is electrically connected to the power supply 10, the controller 30 and the motion state trigger 20. The second power supply 42 is electrically connected to the power source 10 and the motion state trigger 20. First power conveyor 40 is used to provide a current path leading from power supply 10 to controller 30. The second power supply 42 is used to continuously supply power from the power source 10 to the motion state trigger 20. In practice, the first power supply conveyor 40 and the second power supply conveyor 42 may be implemented by Linear drop out regulators (LDOs) or Metal-Oxide-Semiconductor Field-Effect transistors (MOSFETs), and the invention does not limit the types of hardware components of the first power supply conveyor 40 and the second power supply conveyor 42. When the first power conveyor 40 receives the trigger signal from the moving state trigger 20, the first power conveyor 40 supplies power of the power supply 10 to enable the controller 30; when the first power conveyor 40 receives the power-off signal from the moving state trigger 20, the first power conveyor 40 stops supplying power of the power source 10 to turn off the controller 30.
Fig. 2 is a shutdown flow chart of the power control method disclosed in an embodiment of the invention, which is suitable for the power control apparatus. Referring to step S0, the controller resets the timer, that is, when the electronic transmission is turned on, the controller 30 resets the idle time value of the timer to zero, and then waits for the shift signal from the shift knob via the signal transceiver 32, or the controller 30 receives the trigger signal or the static signal from the motion state trigger 20. Referring to step S1, in one embodiment, the controller 30 actively sends a report signal to obtain a trigger signal or a static signal, and the controller 30 starts to accumulate the idle time when obtaining the static signal. In another embodiment, the motion state trigger actively sends a trigger signal or a rest signal, so that the controller 30 starts accumulating the idle time when it first receives the rest signal sent by the motion state trigger 20. Then, in step S2, the timer starts to accumulate the idle time of the static state. When the idle time reaches the first accumulated time, the controller 30 sends a shutdown signal and stops timing as shown in steps D3 to S4. Otherwise, as shown from step D3 to step S2, the timer continues to accumulate the idle time. Referring to step S5, when the motion state trigger 20 receives the shutdown signal from the controller 30, the motion state trigger 20 sends a power-off signal to the first power conveyor 40. When the first power conveyer 40 receives the power-off signal, the first power conveyer 40 stops supplying the power of the power source 10 to the controller 30, so that the controller 30 enters a shutdown state and no longer consumes the battery power, as shown in step S7.
Fig. 3 is a flowchart illustrating a restart procedure after shutdown of the power control method according to another embodiment of the invention, which is suitable for the power control apparatus. Steps S0 to S1 in fig. 3 are the same as steps S0 to S1 in fig. 2, and are not repeated here. Referring to step S21 of fig. 3, if the motion state trigger 20 sends a trigger signal and the controller 30 receives the trigger signal during the process of accumulating the idle time of the timer, the process returns to step S0 and the controller 30 resets the timer. Referring to step D2, if the idle time reaches the second predetermined time, the controller 30 increases the transceiving cycle of the signal transceiver 32, as shown in step S3. Increasing the transceiving period may reduce the power consumed by the signal transceiver 32. Referring to step S22, after the idle time exceeds the second predetermined time and during the process of continuing to accumulate the idle time by the timer, if the motion state trigger 20 sends the trigger signal and the controller 30 receives the trigger signal, go back to step S0; otherwise, if the controller 30 does not receive any trigger signal, the accumulated idle time of the timer is increased to reach the first preset time, and then as shown in steps S4 to S6 (which is the same as steps S4 to S6 of fig. 2), the controller 30 sends a shutdown signal, the motion state trigger 20 receives the shutdown signal and sends a shutdown signal, and the first power transporter 40 receives the shutdown signal and stops supplying power to the controller 30. After step S6 is executed, controller 30 enters a shutdown state and no more power is consumed. Referring to step D13, if the motion state trigger 20 does not sense the moving state and sends a trigger signal, the process proceeds to step S7, and the controller 30 keeps the power-off state. It should be noted that after the first power conveyor 40 stops supplying power to the power source 10 to cause the controller 30 to enter the power-off state, the moving state trigger 20 still obtains power from the power source 10 through the second power conveyor 42, so that the moving state trigger 20 can send a trigger signal according to the sensed movement condition of the bicycle at any time. Referring to steps D13 to S8, if the first power conveyor 40 receives the trigger signal from the motion state trigger 20, the first power conveyor 40 provides power from the power source 10 to the controller 30, the controller restarts the power-on state after power is supplied, and then returns to step S0, and the controller 30 resets the timer to perform the next idle time accumulation. On the contrary, if the first power conveyor 40 does not receive any trigger signal while the controller 30 maintains the power-off state, the controller 30 continues to maintain the power-off state. As shown in step S7.
In summary, the power control apparatus and the power control method for an electronic transmission according to the present invention can achieve the condition of automatically defining the complete turning off of the power of the controller or the partial turning off of the power of the controller by the cooperation of the timer in the controller and the motion state trigger, thereby saving the power consumption of the battery in the electronic transmission. On the other hand, the controller in the shutdown state can still sense the movement of the bicycle and supply power to the controller through the action cooperation of the motion state trigger and the first power supply conveyor, so that the controller immediately deals with the subsequent speed changing operation.
Claims (9)
1. A power control device for an electronic transmission adapted to an electronic transmission of a bicycle, the power control device comprising:
the power supply is used for providing working electric energy for the electronic transmission;
the motion state trigger is arranged on the bicycle and used for sensing the motion state of the motion state trigger to selectively send a trigger signal or a static signal, and when the motion state trigger receives a shutdown signal, the motion state trigger sends a power-off signal;
a controller electrically connected to the motion state trigger and a motor driver, the controller including a signal transceiver for receiving or transmitting a variable speed signal for controlling the motor driver and a timer for accumulating an idle time; when the controller receives the static signal, the controller starts the timer and accumulates the idle time; when the idle time reaches a first preset time, the controller sends the shutdown signal; when the controller receives the trigger signal, the controller resets the timer to accumulate the idle time again; and
the power supply conveyor is electrically connected with the power supply, the controller and the motion state trigger, and when the power supply conveyor receives the trigger signal, the power supply conveyor provides electric energy of the power supply to the controller; when the power supply conveyor receives the power-off signal, the power supply conveyor stops supplying the electric energy of the power supply to the controller,
when the idle time accumulated by the timer reaches a second preset time, the controller increases a transceiving period of the signal transceiver.
2. The power control device as claimed in claim 1, wherein the motion state trigger senses the motion state of the motion state trigger and transmits the trigger signal or transmits the still signal when the motion state trigger receives a report signal transmitted by the controller, and the motion state trigger does not transmit the trigger signal or the still signal when the motion state trigger does not receive a report signal transmitted by the controller.
3. The power control device as claimed in claim 1, wherein the motion state trigger has a motion state sensor and a power management unit, the motion state sensor is used to sense its own motion state to selectively send the trigger signal or send the stationary signal; the power management unit is electrically connected with the motion state sensor and sends the power-off signal when the power management unit receives the shutdown signal.
4. The power control device of claim 1, wherein the signal transceiver is a wireless bluetooth transceiver.
5. The power control device as claimed in claim 1, wherein the power transmitter is a first power transmitter, and the power control device further comprises a second power transmitter electrically connected to the power source and the motion state trigger, the second power transmitter being configured to provide power from the power source to the motion state trigger.
6. A power supply control method of an electronic transmission, which is applied to the power supply control apparatus of an electronic transmission according to claim 1, characterized by comprising:
sensing a static state by the motion state trigger and sending a static signal;
after the controller receives the static signal, the controller starts the timer to accumulate the idle time;
after the idle time reaches the first preset time, the controller sends the shutdown signal;
after the motion state trigger receives the shutdown signal, the motion state trigger sends the power-off signal; and
after the power supply conveyor receives the power-off signal, the power supply conveyor stops supplying the electric energy of the power supply to the controller.
7. The method as claimed in claim 6, further comprising increasing the transceiving cycle of the signal transceiver by the controller when the idle time accumulated by the timer reaches a second predetermined time after the timer is started, wherein the second predetermined time is less than the first predetermined time.
8. The method of claim 6, further comprising resetting the timer and accumulating the idle time with the controller when the controller receives the trigger signal before the idle time reaches the first predetermined time.
9. The power control method of an electronic transmission according to claim 6, further comprising:
after stopping supplying the electric energy of the power supply to the controller, sensing a moving state by the motion state trigger and sending the trigger signal;
after the power supply conveyor receives the trigger signal, the power supply conveyor provides the electric energy of the power supply to the controller; and
after the power of the power source is supplied to the controller, the signal transceiver transmits or receives a variable speed signal for controlling the motor driver.
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| CN201711174068.1A CN109808825B (en) | 2017-11-22 | 2017-11-22 | Power supply control device and power supply control method for electronic transmission |
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| CN201711174068.1A CN109808825B (en) | 2017-11-22 | 2017-11-22 | Power supply control device and power supply control method for electronic transmission |
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| CN109808825B true CN109808825B (en) | 2020-09-15 |
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| US11414150B2 (en) * | 2020-05-01 | 2022-08-16 | Shimano Inc. | Operating device for human-powered vehicle |
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| US20020128106A1 (en) * | 2001-03-09 | 2002-09-12 | Satoshi Kitamura | Method of controlling bicycle assembly |
| CN105128996A (en) * | 2014-06-09 | 2015-12-09 | 株式会社岛野 | Power supply system, electrically assisted system, and electric gear shift system |
| CN105314061A (en) * | 2014-08-01 | 2016-02-10 | 坎培诺洛有限公司 | Bicycle electronic system and related method |
| CN106064663A (en) * | 2015-04-21 | 2016-11-02 | 株式会社岛野 | Control System For Bicycle |
| CN106080948A (en) * | 2015-04-27 | 2016-11-09 | 株式会社岛野 | Bicycle control system |
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2017
- 2017-11-22 CN CN201711174068.1A patent/CN109808825B/en active Active
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|---|---|---|---|---|
| JPH0958562A (en) * | 1995-08-25 | 1997-03-04 | Bridgestone Cycle Co | Bicycle with auxiliary power |
| US20020128106A1 (en) * | 2001-03-09 | 2002-09-12 | Satoshi Kitamura | Method of controlling bicycle assembly |
| CN105128996A (en) * | 2014-06-09 | 2015-12-09 | 株式会社岛野 | Power supply system, electrically assisted system, and electric gear shift system |
| CN105314061A (en) * | 2014-08-01 | 2016-02-10 | 坎培诺洛有限公司 | Bicycle electronic system and related method |
| CN106064663A (en) * | 2015-04-21 | 2016-11-02 | 株式会社岛野 | Control System For Bicycle |
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