CN117970081B - Method, system, device and storage medium for detecting integrated circuit board - Google Patents

Method, system, device and storage medium for detecting integrated circuit board Download PDF

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Publication number
CN117970081B
CN117970081B CN202410389344.XA CN202410389344A CN117970081B CN 117970081 B CN117970081 B CN 117970081B CN 202410389344 A CN202410389344 A CN 202410389344A CN 117970081 B CN117970081 B CN 117970081B
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antenna
circuit board
circuit
radio frequency
analog
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CN117970081A (en
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叶成相
万学飞
夏洪利
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Shenzhen Shengke Technology Co ltd
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Shenzhen Shengke Technology Co ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28Testing of electronic circuits, e.g. by signal tracer
    • G01R31/2801Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
    • G01R31/281Specific types of tests or tests for a specific type of fault, e.g. thermal mapping, shorts testing
    • G01R31/2817Environmental-, stress-, or burn-in tests
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28Testing of electronic circuits, e.g. by signal tracer
    • G01R31/2851Testing of integrated circuits [IC]
    • G01R31/2855Environmental, reliability or burn-in testing
    • G01R31/2856Internal circuit aspects, e.g. built-in test features; Test chips; Measuring material aspects, e.g. electro migration [EM]

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Tests Of Electronic Circuits (AREA)

Abstract

The invention discloses a detection method, a system, a device and a storage medium of an integrated circuit board, wherein the detection method of the integrated circuit board comprises the following steps: after entering the aging performance detection stage, connecting a detection terminal with an analog antenna circuit on an analog antenna circuit board, wherein the analog antenna circuit is matched with equivalent parameters of a transmitting antenna; controlling the radio frequency switch to disconnect the radio frequency amplifying circuit from the antenna terminal; and controlling the radio frequency switch to connect the radio frequency amplifying circuit with the detection terminal; and when the aging performance is detected, the interference signals output by the interference signal generating circuit are sequentially output to the analog antenna circuit board after passing through the radio frequency amplifying circuit, the radio frequency switch and the detection terminal, and the antenna terminal does not emit the interference signals output by the interference signal generating circuit. The technical scheme of the invention can ensure that the integrated circuit board in the interference type equipment does not generate interference signals with excessively high energy when the aging performance is detected.

Description

Method, system, device and storage medium for detecting integrated circuit board
Technical Field
The present invention relates to the field of integrated circuit board detection technologies, and in particular, to a method, a system, a device, and a storage medium for detecting an integrated circuit board.
Background
At present, the aging performance of an integrated circuit board in the equipment is usually detected before the equipment leaves the factory, namely, whether the relevant electrical parameters of the integrated circuit board are qualified or not is detected after the integrated circuit board is subjected to larger voltage and current for a period of time. Along with the development of the interference type equipment, when the aging performance of the integrated circuit board in the interference type equipment is detected, the energy of interference signals generated by the integrated circuit board is overlarge, and the interference signals are very easy to influence the normal life of surrounding residents or the operation of other companies.
Disclosure of Invention
The invention mainly aims to provide a detection method of an integrated circuit board, which aims to solve the problem that an interference signal with too high energy is generated when the integrated circuit board in interference type equipment detects ageing performance.
In order to achieve the above object, the present invention provides a method for detecting an integrated circuit board, wherein an interference signal generating circuit, a radio frequency amplifying circuit, a radio frequency switch, a detecting terminal and an antenna terminal are provided on the integrated circuit board, the antenna terminal is connected with a transmitting antenna, the interference signal generating circuit is connected with a first end of the radio frequency switch through the radio frequency amplifying circuit, the detecting terminal is connected with a second end of the radio frequency switch, the antenna terminal is connected with a third end of the radio frequency switch, the method for detecting an integrated circuit board comprises:
After entering an aging performance detection stage, connecting the detection terminal with an analog antenna circuit on an analog antenna circuit board, wherein the analog antenna circuit is matched with equivalent parameters of the transmitting antenna;
Controlling the radio frequency switch to disconnect the radio frequency amplifying circuit from the antenna terminal; and controlling the radio frequency switch to connect the radio frequency amplifying circuit with the detection terminal;
And when the aging performance is detected, the interference signal output by the interference signal generating circuit is sequentially output to the analog antenna circuit after passing through the radio frequency amplifying circuit, the radio frequency switch and the detection terminal, and the transmitting antenna does not transmit the interference signal.
Optionally, after entering the stage of aging performance inspection, before the step of connecting the inspection terminal with the analog antenna circuit on the analog antenna circuit board, the inspection method of the integrated circuit board further includes:
acquiring antenna information of a transmitting antenna;
determining a target circuit model according to the antenna information;
And forming the analog antenna circuit on the analog antenna circuit board according to a target circuit model.
Optionally, the step of determining the target circuit model according to the antenna information includes:
Determining an original simulation antenna circuit model according to the antenna type, the antenna working parameters, the antenna shape and the antenna size in the antenna information;
and correcting the original analog antenna circuit model to obtain the target circuit model.
Optionally, the step of determining the original analog antenna circuit model according to the antenna type, the antenna working parameter, the antenna shape and the antenna size in the antenna information includes:
Determining a corresponding LC circuit model according to the antenna type, the antenna shape and a preset circuit model mapping table;
And determining device parameters in the LC circuit model according to the antenna size and the antenna working parameters to obtain the original analog antenna circuit model.
Optionally, the step of correcting the original analog antenna circuit model to obtain the target circuit model includes:
According to the antenna admittance in the antenna information, carrying out admittance correction on an original analog antenna circuit model to obtain a transition analog antenna circuit model, wherein the admittance of the transition analog antenna circuit model at each frequency point is consistent with the admittance of the transmitting antenna at each frequency point;
and correcting device errors of the transition analog antenna circuit model to obtain the target circuit model.
Optionally, the step of performing admittance correction on the original analog antenna circuit model according to the antenna admittance in the antenna information to obtain a transitional analog antenna circuit model includes:
Calculating the circuit admittance of an original analog antenna circuit model;
Determining a correction analog antenna circuit model based on the antenna admittance and the circuit admittance;
and correcting the original analog antenna circuit model according to the corrected analog antenna circuit model to obtain a transition analog antenna circuit model.
Optionally, the method for detecting an integrated circuit board further includes:
after the ageing performance detection is finished, disconnecting the detection terminal from the analog antenna circuit board;
Controlling the radio frequency switch to disconnect the radio frequency amplifying circuit from the detection terminal; and controlling the radio frequency switch to connect the radio frequency amplifying circuit with the antenna terminal.
The invention also provides a detection device of the integrated circuit board, which comprises:
a memory; the memory is used for storing programs;
A processor; the processor is configured to execute the steps of the method for inspecting an integrated circuit board as described above by invoking an inspection program of the integrated circuit board stored in the memory.
The invention also provides a detection system of the integrated circuit board, which comprises:
The analog antenna circuit board is provided with an analog antenna circuit, and the analog antenna circuit is matched with equivalent parameters of a transmitting antenna connected with the integrated circuit board; and
Such as the above-mentioned integrated circuit board inspection device.
The invention also provides a storage medium, wherein the storage medium stores a detection program of the integrated circuit board, and the detection program of the integrated circuit board realizes the steps of the detection method of the integrated circuit board when being executed by a processor.
According to the technical scheme, the interference signals in the form of radio frequency signals generated by the integrated circuit board in the interference type equipment in the aging performance detection stage are not output to the transmitting antenna finally, so that the interference signals with excessive energy are not generated, and the problem that the interference signals with excessive energy are generated when the integrated circuit board in the interference type equipment detects the aging performance is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flowchart illustrating steps of an exemplary method for inspecting an integrated circuit board according to the present invention;
FIG. 2 is a flowchart illustrating steps of another embodiment of a method for inspecting an integrated circuit board according to the present invention;
FIG. 3 is a flowchart illustrating a method for inspecting an integrated circuit board according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram of an embodiment of a testing device for an integrated circuit board according to the present invention.
Reference numerals illustrate:
Reference numerals Name of the name Reference numerals Name of the name
11 Memory device 13 Communication bus
12 Processor and method for controlling the same
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
At present, when aging performance detection is performed on an integrated circuit board of interference type equipment (such as mobile phone signal interference equipment, wifi signal interference equipment, base station signal interference equipment and unmanned aerial vehicle communication signal interference equipment), higher current and higher voltage need to be supplied to the integrated circuit board, so that each functional circuit (such as an interference signal generating circuit and a radio frequency amplifying circuit) on the integrated circuit board is in a higher power consumption state to realize the aging performance detection. The aging performance detection process needs to connect the transmitting antenna on the integrated circuit board normally to ensure that the aging degree of each functional circuit reaches the expected level and ensure the accuracy of the related electrical parameters measured later, but connecting the transmitting antenna can also cause an interference signal with overlarge energy in the detection process, and the interference to the surrounding electromagnetic environment is easy to cause.
In view of the above problems, the present invention provides a method for detecting an integrated circuit board, which can be used for detecting aging performance of an integrated circuit board in an interference type device, wherein an interference signal generating circuit, a radio frequency amplifying circuit, a radio frequency switch, a detecting terminal and an antenna terminal are arranged on the integrated circuit board, the antenna terminal is connected with a transmitting antenna, the interference signal generating circuit is connected with a first end of the radio frequency switch through the radio frequency amplifying circuit, the detecting terminal is connected with a second end of the radio frequency switch, and the antenna terminal is connected with a third end of the radio frequency switch.
Referring to fig. 1 to 3, in an embodiment, the method for inspecting an integrated circuit board includes:
step S100, after entering an aging performance detection stage, connecting the detection terminal with an analog antenna circuit on an analog antenna circuit board, wherein the analog antenna circuit is matched with equivalent parameters of the transmitting antenna;
Step 200, controlling the radio frequency switch to disconnect the radio frequency amplifying circuit from the antenna terminal; and controlling the radio frequency switch to connect the radio frequency amplifying circuit with the detection terminal;
And step S300, performing aging performance detection on the integrated circuit board, wherein when the aging performance is detected, an interference signal output by the interference signal generating circuit is sequentially output to the analog antenna circuit after passing through the radio frequency amplifying circuit, the radio frequency switch and the detection terminal, and the transmitting antenna does not transmit the interference signal.
It should be noted that, the execution body of the detection method of the integrated circuit board of the present invention may be a detection device in a special detection system; or a special inspector can be adopted to execute each step respectively; or it may also be that the execution subject of part of the detection method is a detection device, and the execution subject of the rest of the detection method is a detection person.
In step S100, a mating terminal may be reserved on the analog antenna circuit board, and the mating terminal may be connected to the analog antenna circuit. After confirming that the aging performance inspection stage is entered, the inspection terminals on the integrated circuit board to be inspected are connected with the mating terminals on the analog antenna circuit board through the signal transmission line. The analog antenna circuit is preconfigured and has the same equivalent parameters as the transmitting antenna. It should be noted that the analog antenna circuit is identical to the transmitting antenna in that: both can make the accessed radio frequency signal pass through the transmission path with the same parameters; the analog antenna circuit differs from the transmitting antenna in that: because the analog antenna circuit has no antenna structure, the analog antenna circuit cannot radiate under the action of radio frequency signals to generate electromagnetic wave signals, and the transmitting antenna can radiate under the action of radio frequency signals to generate electromagnetic wave signals. In other words, the analog antenna circuit in the technical solution of the present invention can be regarded as a "false antenna" that does not emit electromagnetic wave signals.
In step S200, the rf switch may be a single pole double throw rf switch. The connection of the radio frequency amplifying circuit to the detection terminal may be achieved by controlling the radio frequency switch such that the first end and the second end thereof are connected, and the disconnection of the radio frequency amplifying circuit to the antenna terminal may be achieved by disconnecting the first end thereof from the third end.
In step S300, the integrated circuit board is enabled to enter the burn-in performance detection by providing the integrated circuit board with the supply current and the supply voltage corresponding to the burn-in performance detection. In the aging performance detection stage, the interference signal generating circuit generates an interference signal and outputs the interference signal to the radio frequency amplifying circuit, and the radio frequency amplifying circuit is used for amplifying the power of the interference signal and then finally outputting the amplified interference signal to the analog antenna circuit on the analog antenna circuit board through the radio frequency switch and the detection terminal.
It should be noted that, in practical applications, there is also a conventional detection scheme in which the transmitting antenna is not installed in the aging performance detection stage, and after the detection stage is finished, an error parameter of a fixed value is compensated based on the measured related electrical parameter. Although the conventional detection scheme can avoid generating interference signals with overlarge energy, in practical application, it is found that, because of large difference in quality control of different integrated circuit boards, under the condition that no transmitting antenna consumes radio frequency signals, the errors of related electric parameters caused by the radio frequency signals are different, and finally, the conventional detection scheme for compensating the error parameters of a fixed value by measuring the related electric parameters of all the integrated circuit boards has high inaccuracy. Compared with the traditional technical scheme, the radio frequency signals generated in the technical scheme are output to the analog antenna circuit, namely the analog antenna circuit is adopted to realize the function of the transmitting antenna on the premise of not transmitting interference signals, so that the problem that the radio frequency signals are not consumed to cause low precision of finally measured related electric parameters can be avoided.
Referring to fig. 1 to 2, in an embodiment, after entering the aging performance testing phase, before the step S100 of connecting the testing terminal with the analog antenna circuit on the analog antenna circuit board, the testing method of the integrated circuit board further includes:
step S400, obtaining antenna information of a transmitting antenna. In this embodiment, since the transmitting antennas in the same type of interference device are often of the same type, the type of the interference device described by the current detection integrated circuit board may be obtained, and then the corresponding preset antenna information may be invoked according to the type of the interference device. The preset antenna type may be measured through a pre-experiment, and stored in association with the corresponding type of the interfering device, so as to be called when executing step S400. In another alternative embodiment, step S400 may also be implemented by acquiring information about the transmitting antenna input by the inspector.
And S500, determining a target circuit model according to the antenna information. In this embodiment, a circuit model with equal parameters to the equivalent parameters of the transmitting antenna, that is, a target circuit model, may be built in real time according to the antenna information, so as to achieve parameter matching between the two. Or the preset circuit model can be optimized according to the antenna information to obtain the target circuit model.
And S600, forming the analog antenna circuit on the analog antenna circuit board according to a target circuit model. In this embodiment, it is understood that the target circuit model includes various circuit devices (e.g., inductance, capacitance, resistance, etc.), parameters of the various circuit devices, and connection relationships between the devices. Thus, step S600 is specifically: and forming a physical circuit corresponding to the target circuit model on the analog antenna circuit board in a welding mode and the like according to the connection relation of the circuit devices of the corresponding parameters so as to form the analog antenna circuit.
Referring to fig. 2, in an embodiment, the step S500 of determining a target circuit model according to the antenna information includes:
And step S510, determining an original simulation antenna circuit model according to the antenna type, the antenna working parameters, the antenna shape and the antenna size in the antenna information. In this embodiment, the antenna information includes an antenna type, an antenna operating parameter, an antenna shape, and an antenna size. Wherein, the antenna type represents the type of the shape of the transmitting antenna, such as microstrip antenna, glass fiber reinforced plastic antenna and the like; the antenna operating parameter indicates a frequency band in which an interference signal transmitted by the transmitting antenna is located, for example: 2.4G band, 4800-5000MHz (5G band); the antenna shape represents the shape of the transmitting antenna, such as the near shape of a microstrip antenna, the cylindrical shape of a glass fiber reinforced plastic antenna, etc.; the antenna size represents the shape parameters of the transmitting antenna, such as the length and width of the nearly rectangular microstrip antenna, the axial length, the cross-sectional diameter, etc. of the cylindrical glass fiber reinforced plastic antenna. Because the difference of the antennas in different types of interference devices is particularly different in antenna types, antenna working parameters, antenna shapes and antenna sizes, a corresponding original analog antenna circuit model can be determined according to the antenna information.
And step S520, correcting the original analog antenna circuit model to obtain the target circuit model. It should be noted that, the original analog antenna circuit model determined in step S510 has a parameter error, and its circuit parameter cannot be completely matched with the equivalent parameter of the transmitting antenna, so that the original analog antenna circuit model needs to be further corrected to obtain a target circuit model matched with the equivalent parameter of the transmitting antenna. According to the technical scheme, the original analog antenna circuit model is corrected, so that the matching accuracy of the finally obtained target circuit model and the equivalent parameters of the transmitting antenna can be ensured.
Optionally, the step S510 of determining the original analog antenna circuit model according to the antenna type, the antenna working parameter, the antenna shape and the antenna size in the antenna information includes:
Step S511, determining a corresponding LC circuit model according to the antenna type, the antenna shape and a preset circuit model mapping table. It should be noted that, the LC circuit in the technical solution of the present invention refers to a circuit in which at least one capacitive device and one inductive device are present. In this embodiment, the preset circuit model mapping table may store various basic LC circuits, such as LC series resonant circuits, LC parallel resonant circuits, LRC series resonant circuits, LRC parallel resonant circuits, and the like. And each LC circuit model in the preset circuit model mapping table corresponds to one antenna type and one antenna shape, so that when step S511 is executed, the corresponding LC circuit model can be screened out from the preset circuit model mapping table according to the antenna type and the antenna shape in the current antenna information. The correspondence among each LC circuit model, each antenna type, and each antenna shape in the preset circuit model mapping table may be obtained through a large number of preliminary experiments, which is not limited herein.
And step S512, determining device parameters in the LC circuit model according to the antenna size and the antenna working parameters to obtain the original analog antenna circuit model. In this embodiment, the antenna working parameters include the working bandwidth and resonance frequency of the antenna, and initial device parameters of the circuit in the LC circuit model may be determined according to the working bandwidth and resonance frequency of the antenna; the initial device parameters may include an initial capacitance value, an initial inductance value, and an initial resistance value may be determined when the LC circuit model has a resistive device therein. And step S512 may further include substituting the initial device parameter into the LC circuit model, and performing fine tuning on the initial device parameter by using the circuit simulation software until the fine-tuned initial device parameter can make the admittance of the LC circuit model at the resonant frequency point equal to the actual admittance of the transmitting antenna. Thus, the original analog antenna circuit model in the technical scheme of the invention can be obtained.
Optionally, the step S520 of correcting the original analog antenna circuit model to obtain the target circuit model includes:
And step S521, according to the antenna admittance in the antenna information, carrying out admittance correction on the original analog antenna circuit model to obtain a transition analog antenna circuit model, wherein the admittance of the transition analog antenna circuit model at each frequency point is consistent with the admittance of the transmitting antenna at each frequency point. It should be noted that, as shown in step S512, the admittance of the original analog antenna circuit model is only equal to the actual admittance of the transmitting antenna at the resonant frequency point, but the admittance of the original analog antenna circuit model at other operating frequency points is not necessarily equal to the actual admittance of the transmitting antenna, so that the admittance of the transition analog antenna circuit model obtained after correction is required to be corrected so that the admittance of the transition analog antenna circuit model at each frequency point can be consistent with the admittance of the transmitting antenna at each frequency point.
And step S522, performing device error correction on the transition analog antenna circuit model to obtain the target circuit model. In practical application, it is found that, because the device parameters in the actual device cannot reach the device parameters of the standard device in the simulation, the admittance of the analog antenna circuit formed in step S600 at each frequency point is inconsistent with the admittance of the transition analog antenna circuit model in step S521 at each frequency point. In view of the above, the technical scheme of the invention further carries out error correction on the device parameters in the transition analog antenna circuit model, and takes the transition analog antenna circuit model after the device error correction as a target circuit model. It can be understood that, at this time, the device parameters in the transition analog antenna circuit model are the initial device parameters after the fine tuning in the step S512, so the step S522 is specifically: and (3) performing product operation on the initial device parameters after fine adjustment in the step (S512) and a preset error rate respectively, and taking the product operation result as the device parameters after device error correction (namely a target circuit model) in the transition simulation antenna circuit model. The error rate is preset to be 0.95 or 1.05, and when the device parameter of the actual device is smaller than the initial device parameter, the error rate is selected to be 1.05 when the product operation is carried out; when the device parameter of the actual device is smaller than the initial device parameter, the error rate is selected to be 0.95 when the product operation is carried out. By adopting the target circuit model obtained after the error correction of the device, the admittance of the analog antenna circuit formed in the step S600 at each frequency point is consistent with the admittance of the transition analog antenna circuit model in the step S521 at each frequency point, so that the matching accuracy of the equivalent parameters of the target circuit model and the transmitting antenna is further improved.
Optionally, according to the antenna admittance in the antenna information, an admittance correction is performed on the original analog antenna circuit model to obtain a transitional analog antenna circuit model, which includes:
step S5211, calculating the circuit admittance of the original analog antenna circuit model. In this embodiment, the admittance of the original analog antenna circuit model at each frequency point, that is, the circuit admittance, may be obtained by circuit simulation software. In the same way, the admittance of the transmitting antenna at each frequency point, namely the antenna admittance, can be obtained through antenna simulation software.
And step S5212, determining a correction analog antenna circuit model according to the antenna admittance and the circuit admittance. In this embodiment, step S5212 may specifically be: and calculating the difference between the admittances of the transmitting antenna at different frequency points and the admittances of the original analog antenna circuit model at corresponding frequency points to obtain the difference between the antenna admittances and the circuit admittances about different frequency points, performing polynomial fitting on the difference values of the different frequency points, and performing circuit modeling according to fitting results to obtain the corrected analog antenna circuit model. The circuit modeling according to the fitting result specifically comprises the following steps: and taking a constant term in the fitting result as a resistance device, a proportional term in the fitting result as a capacitance device, and a pole in the fitting result as a series-parallel circuit of resistance, inductance and capacitance.
And step S5213, correcting the original analog antenna circuit model according to the corrected analog antenna circuit model to obtain a transition analog antenna circuit model. In this embodiment, step S5213 specifically includes: and connecting the correction analog antenna circuit model with the original analog antenna circuit model in parallel, and taking the parallel circuit model as a transition analog antenna circuit model.
By means of the arrangement, the technical scheme of the invention corrects the original analog antenna circuit model by utilizing the admittance difference values corresponding to the different frequency points of the transmitting antenna and the original analog antenna circuit model, and the accuracy of the obtained transition analog antenna circuit model can be ensured.
Referring to fig. 3, in an embodiment, the method for inspecting an integrated circuit board further includes:
And S700, disconnecting the detection terminal from the analog antenna circuit board after the aging performance detection is finished. In this embodiment, after the power supply current and the power supply voltage corresponding to the aging performance detection are provided for the integrated circuit board for a preset time, the aging performance detection of the integrated circuit board can be considered to be finished, and at this time, the signal transmission line and the detection terminal of the integrated circuit board can be disconnected, or the signal transmission line and the matching terminal of the analog antenna circuit board can be disconnected to implement step S700. It can be understood that after the step S700 is performed, the connection between the integrated circuit board and the analog antenna circuit is also in an off state, and at this time, the integrated circuit board can be further detected for related electrical parameters, and whether the detected related electrical parameters reach the preset standard is determined, so as to complete the aging performance detection of the circuit board.
Step S800, controlling the radio frequency switch to disconnect the radio frequency amplifying circuit from the detection terminal; and controlling the radio frequency switch to connect the radio frequency amplifying circuit with the antenna terminal. In this embodiment, the connection between the rf amplifying circuit and the detection terminal may be disconnected by controlling the rf switch to disconnect the first end from the second end, and the connection between the rf amplifying circuit and the antenna terminal may be disconnected by connecting the first end from the third end.
By the arrangement, the connection between the radio frequency circuit and the antenna terminal can be automatically restored after the aging performance detection is finished, if the related electrical parameters detected subsequently are qualified (reach the preset standard), the qualified integrated circuit board can be sent to the next detection stage, and therefore the technical scheme of the invention can meet the requirements of an automatic detection flow.
The invention also discloses a detection device of the integrated circuit board.
Referring to fig. 4, the inspection apparatus of an integrated circuit board includes:
a memory; the memory is used for storing programs;
a processor; the processor is used for executing the steps of the integrated circuit board detection method by calling the integrated circuit board detection program stored in the memory.
The specific steps of the method for detecting an integrated circuit board refer to the above embodiments, and since the detection device adopts all the technical solutions of all the embodiments, at least the detection device has all the beneficial effects brought by the technical solutions of the embodiments, and the detailed description is omitted herein. The memory 11 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory, and the memory 11 may alternatively be a storage device independent of the detection device; the processor 12 may be a CPU. The memory 11 and the processor 12 are connected by a communication bus 13, which communication bus 13 may be a UART bus or an I2C bus.
The invention also provides a detection system of the integrated circuit board, which comprises the detection device of the analog antenna circuit board and the integrated circuit board, and the specific structure of the detection device refers to the embodiment, and as the detection system of the integrated circuit board adopts all the technical schemes of all the embodiments, at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted. The analog antenna circuit board is provided with an analog antenna circuit, and the analog antenna circuit is matched with equivalent parameters of a transmitting antenna connected with the integrated circuit board.
The present invention also provides a storage medium having a program stored thereon, which when executed by a processor, implements the steps of the method for inspecting an integrated circuit board as described above. The specific steps of the method for detecting an integrated circuit board can refer to the above embodiments, and since the storage medium can implement all the technical solutions of all the embodiments, at least has all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.
The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all the equivalent structural changes made by the description of the present invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.

Claims (7)

1. The detection method of the integrated circuit board is characterized in that an interference signal generating circuit, a radio frequency amplifying circuit, a radio frequency switch, a detection terminal and an antenna terminal are arranged on the integrated circuit board, the antenna terminal is connected with a transmitting antenna, the interference signal generating circuit is connected with a first end of the radio frequency switch through the radio frequency amplifying circuit, the detection terminal is connected with a second end of the radio frequency switch, the antenna terminal is connected with a third end of the radio frequency switch, and the detection method of the integrated circuit board comprises the following steps:
After entering an aging performance detection stage, connecting the detection terminal with an analog antenna circuit on an analog antenna circuit board, wherein the analog antenna circuit is matched with equivalent parameters of the transmitting antenna;
Controlling the radio frequency switch to disconnect the radio frequency amplifying circuit from the antenna terminal; and controlling the radio frequency switch to connect the radio frequency amplifying circuit with the detection terminal;
The integrated circuit board is subjected to ageing performance detection, and when the ageing performance is detected, an interference signal output by the interference signal generating circuit is sequentially output to the analog antenna circuit after passing through the radio frequency amplifying circuit, the radio frequency switch and the detection terminal, and the transmitting antenna does not transmit the interference signal;
After entering the aging performance testing stage, before the step of connecting the testing terminal with the analog antenna circuit on the analog antenna circuit board, the testing method of the integrated circuit board further comprises:
acquiring antenna information of a transmitting antenna;
determining a target circuit model according to the antenna information;
forming the analog antenna circuit on the analog antenna circuit board according to a target circuit model;
The step of determining a target circuit model according to the antenna information comprises the following steps:
Determining an original simulation antenna circuit model according to the antenna type, the antenna working parameters, the antenna shape and the antenna size in the antenna information;
Correcting an original analog antenna circuit model to obtain the target circuit model;
correcting the original analog antenna circuit model to obtain the target circuit model, wherein the method comprises the following steps of:
According to the antenna admittance in the antenna information, carrying out admittance correction on an original analog antenna circuit model to obtain a transition analog antenna circuit model, wherein the admittance of the transition analog antenna circuit model at each frequency point is consistent with the admittance of the transmitting antenna at each frequency point;
and correcting device errors of the transition analog antenna circuit model to obtain the target circuit model.
2. The method of testing an integrated circuit board according to claim 1, wherein the step of determining an original analog antenna circuit model based on the antenna type, the antenna operating parameters, the antenna shape, and the antenna size in the antenna information comprises:
Determining a corresponding LC circuit model according to the antenna type, the antenna shape and a preset circuit model mapping table;
And determining device parameters in the LC circuit model according to the antenna size and the antenna working parameters to obtain the original analog antenna circuit model.
3. The method of claim 1, wherein the step of performing admittance correction on the original analog antenna circuit model based on the antenna admittances in the antenna information to obtain the transitional analog antenna circuit model comprises:
Calculating the circuit admittance of an original analog antenna circuit model;
Determining a correction analog antenna circuit model based on the antenna admittance and the circuit admittance;
and correcting the original analog antenna circuit model according to the corrected analog antenna circuit model to obtain a transition analog antenna circuit model.
4. A method of inspecting an integrated circuit board according to any one of claims 1-3, further comprising:
after the ageing performance detection is finished, disconnecting the detection terminal from the analog antenna circuit board;
Controlling the radio frequency switch to disconnect the radio frequency amplifying circuit from the detection terminal; and controlling the radio frequency switch to connect the radio frequency amplifying circuit with the antenna terminal.
5. An integrated circuit board inspection device, characterized in that the integrated circuit board inspection device comprises:
a memory; the memory is used for storing programs;
A processor; the processor is configured to perform the steps of the method for inspecting an integrated circuit board according to any one of claims 1-4 by invoking an inspection program for an integrated circuit board stored in the memory.
6. A system for inspecting an integrated circuit board, the system comprising:
The analog antenna circuit board is provided with an analog antenna circuit, and the analog antenna circuit is matched with equivalent parameters of a transmitting antenna connected with the integrated circuit board; and
The integrated circuit board inspection device of claim 5.
7. A storage medium, wherein the storage medium has stored thereon a test program for an integrated circuit board, which when executed by a processor, implements the steps of the method for testing an integrated circuit board according to any one of claims 1-4.
CN202410389344.XA 2024-04-02 2024-04-02 Method, system, device and storage medium for detecting integrated circuit board Active CN117970081B (en)

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