PCB testing device and method of transponder, electronic equipment and storage medium

Abstract

The invention discloses a transponder PCB testing device and method, electronic equipment and a storage medium, the device comprises a signal switching module, a probe power module, a clamp module and a cable, the signal switching module comprises a first digital control unit and a driving and collecting instrument, and the probe power module comprises a second digital control unit, an electromagnetic valve and a stable gas source. The clamp module comprises a processing circuit provided with an impedance matching circuit and a noise filtering circuit, a clamp and a single-head pneumatic probe, the first digital control unit is connected with the driving and collecting instrument through a cable, the driving and collecting instrument is connected with the processing circuit through a cable, and the processing circuit is connected with the single-head pneumatic probe through a cable. The second digital control unit is connected with an electromagnetic valve through a cable, the electromagnetic valve is connected with a stable air source through an air pipe and connected with a single-head pneumatic probe through an air pipe, and a PCB of the transponder to be tested is fixed through a clamp. The device can reduce the influence of noise or impedance on the test result of the transponder PCB.

Description

Technical Field

[0001] The present application relates to the field of automation, and more specifically, to a PCB testing device, method, electronic device and storage medium for a transponder. Background Art

[0002] The transponder is a ground positioning device installed between the rails in the train control system. It is mainly used to provide the train with fixed ground information (such as line slope, maximum allowable line speed, etc.) and variable information. The PCB (Printed Circuit Board) of the transponder needs to be tested after mounting. In order to improve the degree of automation of the test, a fixture structure containing metal probes is often used during the test process. However, after being connected to the automatic test fixture, the load changes, and common parts such as probes and connecting wires are prone to introduce noise. Therefore, the test results of the transponder PCB are affected. Summary of the invention

[0003] In view of this, the present application provides a transponder PCB testing device, method, electronic device and storage medium, which are used to solve the problem that the test results of the transponder PCB are affected.

[0004] In order to achieve the above objectives, the proposed solution is as follows:

[0005] A PCB testing device for a transponder, the device comprising: a signal switching module, a probe power module, a fixture module and a cable, the signal switching module comprising a first digital control unit and a driving instrument, the probe power module comprising a second digital control unit, a solenoid valve and a stable air source, the fixture module comprising a processing circuit provided with an impedance matching circuit and a noise filtering circuit, a fixture and at least one single-head pneumatic probe;

[0006] The first digital control unit is connected to the driving and extraction instrument through the cable, and the driving and extraction instrument is connected to the processing circuit through the cable;

[0007] The processing circuit is connected to the at least one single-head pneumatic probe via the cable;

[0008] The second digital control unit is connected to the solenoid valve via the cable, the solenoid valve is connected to the stable air source via an air pipe, and is connected to the at least one single-head pneumatic probe via the air pipe;

[0009] The PCB of the transponder to be tested is fixed by the fixture, so as to be electrically connected to at least one single-head pneumatic probe.

[0010] Optionally, the PCB testing device of the transponder further includes: a relay module for switching the test signal arranged between the driving instrument and the processing circuit, and the cable connected between the relay module and the processing circuit includes a four-wire compensation cable and a coaxial shielded cable;

[0011] The relay module is connected to the driving instrument through the cable, and is connected to the processing circuit through a four-wire compensation cable and a coaxial shielded cable respectively.

[0012] Optionally, the processing circuit includes a power supply compensation circuit, a differential input circuit and a filtering and collecting circuit, and the power supply compensation circuit, the differential input circuit and the filtering and collecting circuit are all provided with the impedance matching circuit and the noise filtering circuit;

[0013] The relay module is connected to the power supply compensation circuit via the four-wire compensation cable, and is respectively connected to the differential input circuit and the filter acquisition circuit via the coaxial shielded cable.

[0014] A transponder PCB testing method is applied to the transponder PCB testing device described above, the method comprising:

[0015] Fix the PCB of the transponder to be tested by a fixture;

[0016] Start a stable gas source;

[0017] Controlling the solenoid valve through a second digital control unit to provide the pneumatic power of the stable air source to at least one single-head pneumatic probe;

[0018] Obtain the test signal provided by the driving and production instrument;

[0019] The at least one inflated single-head pneumatic probe is controlled to be electrically connected to a test point on the PCB of the transponder to be tested, so that the test signal acts on the PCB of the transponder to be tested, so as to test the PCB of the transponder to be tested.

[0020] Optionally, the PCB testing device of the transponder further includes a relay module arranged between the driving instrument and the processing circuit, and the method further includes:

[0021] The relay module is controlled by the first digital control unit to switch the test signal acting on the PCB of the transponder to be tested.

[0022] Optionally, the test signal includes a voltage signal and a drive signal, and the at least one single-head pneumatic probe that is inflated is electrically connected to a point to be tested on the PCB of the transponder to be tested, so that the test signal acts on the PCB of the transponder to be tested to test the PCB of the transponder to be tested, comprising:

[0023] Controlling the at least one inflated single-head pneumatic probe to be electrically connected to a point to be tested on the PCB of the transponder to be tested, so that a voltage signal acts on the PCB of the transponder to be tested, so as to perform a current test on the PCB of the transponder to be tested;

[0024] or,

[0025] The at least one inflated single-head pneumatic probe is controlled to be electrically connected to a test point on the PCB of the transponder to be tested, so as to drive a signal to act on the PCB of the transponder to be tested, so as to perform a signal test on the PCB of the transponder to be tested.

[0026] Optionally, the processing circuit includes a power supply compensation circuit, the power supply compensation circuit has an impedance matching circuit and a noise filtering circuit, the power supply compensation circuit is connected to the single-head pneumatic probe, and the power supply compensation circuit is connected to the driving instrument through a four-wire compensation cable, and the current test on the PCB of the transponder to be tested includes:

[0027] Acquiring a voltage signal provided by the driving and production instrument;

[0028] Providing the voltage signal to the point to be tested on the PCB of the transponder to be tested through the four-wire compensation cable, the power supply compensation circuit and the single-head pneumatic probe;

[0029] The current signal of the test point of the PCB of the transponder to be tested is collected by the driving instrument and sent to the host computer;

[0030] The host computer analyzes the current signal to determine whether the current at the test point of the PCB of the transponder to be tested meets the technical indicators.

[0031] Optionally, the processing circuit includes a differential input circuit and a filter acquisition circuit, the differential input circuit has an impedance matching circuit and a noise filtering circuit, the filter acquisition circuit has the impedance matching circuit and the noise filtering circuit, the differential input circuit and the filter acquisition circuit are respectively connected to the single-head pneumatic probe, the differential input circuit and the filter acquisition circuit are respectively connected to the drive and acquisition instrument through a coaxial shielded cable, and the signal test on the PCB of the transponder to be tested includes:

[0032] Acquiring a driving signal provided by the driving instrument;

[0033] Providing the driving signal to a point to be tested on the PCB of the transponder to be tested through the coaxial shielded cable and the differential compensation circuit;

[0034] The feedback signal sent after the test point receives the driving signal through the filtering and collecting circuit and the coaxial shielded cable is collected by the driving and collecting instrument, and sent to the host computer;

[0035] The host computer analyzes whether the indicators of the feedback signal meet the technical indicators.

[0036] An electronic device comprising a memory and a processor;

[0037] The memory is used to store programs;

[0038] The processor is used to execute the program to implement each step of any of the above transponder PCB testing methods.

[0039] A storage medium stores a computer program, and when the computer program is executed by a processor, the computer program implements the various steps of any of the above transponder PCB testing methods.

[0040] The present application provides a transponder PCB testing device, method, electronic device and storage medium, the device tests the PCB of the transponder to be tested by a pneumatic probe connected to a processing circuit, the processing circuit has an impedance matching module and a noise filtering module, which are used to reduce the influence of noise or impedance on the test results of the transponder PCB when the single-head pneumatic probe tests the transponder PCB. Furthermore, since the single-head pneumatic probe can independently test each module of the transponder PCB, the influence between modules is reduced, the inaccuracy of the test results of the transceiver antenna module of the transponder PCB is effectively reduced, and the single-head pneumatic probe greatly reduces other interferences caused by the probe during the test of the transponder PCB. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0042] Figure 1 A schematic diagram of the structure of a PCB testing device for a transponder provided in an embodiment of the present application;

[0043] Figure 2 A schematic diagram of the structure of another transponder PCB testing device provided in an embodiment of the present application;

[0044] Figure 3 A schematic diagram of the structure of a PCB testing device for another transponder provided in an embodiment of the present application;

[0045] Figure 4 A schematic diagram of the structure of a power supply compensation circuit provided in an embodiment of the present application;

[0046] Figure 5 A schematic diagram of a differential compensation circuit provided in an embodiment of the present application;

[0047] Figure 6 A schematic diagram of the structure of a filtering and collecting circuit provided in an embodiment of the present application;

[0048] Figure 7 A schematic diagram of a process flow of a PCB testing method for a transponder provided in an embodiment of the present application;

[0049] Figure 8 A hardware structure block diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0051] like Figure 1 As shown, an embodiment of the present application provides a PCB test device for a transponder, which may include: a signal switching module, a probe power module, a fixture module and a cable, the signal switching module includes a first digital control unit 1 and a driving instrument 2, the probe power module includes a second digital control unit 3, a solenoid valve 4 and a stable air source 5, the fixture module includes a processing circuit 6 provided with an impedance matching circuit and a noise filtering circuit, a fixture 7 and at least one single-head pneumatic probe 8;

[0052] The first digital control unit 1 is connected to the driving instrument 2 through a cable, and the driving instrument 2 is connected to the processing circuit 6 through a cable;

[0053] The processing circuit 6 is connected to at least one single-head pneumatic probe 8 via a cable;

[0054] The second digital control unit 3 is connected to the solenoid valve 4 through a cable, the solenoid valve 4 is connected to the stable air source 5 through an air pipe, and is connected to at least one single-head pneumatic probe 8 through the air pipe;

[0055] The PCB of the transponder to be tested is fixed by a fixture 7 to facilitate electrical connection with at least one single-head pneumatic probe 8 .

[0056] Among them, the signal switching module can be used to switch the test signal of the test transponder, specifically, the test signal is switched by the first digital control unit 1 in the signal switching module; the probe power module can be used to provide power for the pneumatic probe 8 to be tested, specifically, the second digital control unit 3 in the probe power module controls whether to provide power for the pneumatic probe 8; the fixture module can be used to fix the PCB of the transponder to be tested, and can also be used to fix the processing circuit 6 and the pneumatic probe 8 with an impedance matching circuit and a noise filtering circuit; the cable can be used to connect the various parts in the PCB test device of the transponder. The driving instrument 2 is used to provide the driving signal, power supply or acquisition mode required in the test process. The driving instrument 2 in this embodiment can be a fixed instrument, which can realize multiple functions, or it can be a combination of multiple instruments, and different instruments realize different functions. The electromagnetic valve 4 has a closed cavity, a through hole is opened on the surface of the valve body, the through hole is connected to the air pipe, the middle of the cavity is a valve, and the two sides are two electromagnets. The movement of the valve body is controlled by energizing the magnetic coil to block or leak out the through hole, thereby controlling the power of the pneumatic probe 8. The stable air source 5 can be used to provide a stable air pressure, and provide a stable air pressure power to the pneumatic probe 8 through the solenoid valve 4. The impedance matching module can be used for impedance balance. When the pneumatic probe 8 is connected to the transponder PCB, it can cause a change in the load, and the load change will cause a change in impedance. When the impedance is not matched, it is easy to form a reflection of the signal and damage the part of the output signal in the transponder PCB. The impedance matching process can be simply understood as connecting a resistor in series on the interface circuit according to the test point of the transponder PCB. Specifically, if the impedance of the transponder PCB is high, there are fewer series resistors on the interface circuit; if the impedance of the transponder PCB is low, there are more series resistors on the interface circuit. The signal output by the test point of the transponder PCB is a high-frequency digital signal. If the high-frequency digital signal generates reflection, it is easy to generate noise in the data signal, so a noise filtering circuit is required to filter the high-frequency digital signal. The processing circuit 6 can be a printed circuit board with multiple functional modules, and different functions can be achieved through different module connection methods. In addition to the impedance matching circuit and the noise filtering circuit, the processing circuit 6 can also include circuits such as an attenuation module. The fixture 7 can be used to fix the transponder PCB to be tested. The pneumatic probe 8 can be used to connect with the transponder PCB to be tested, so as to facilitate testing of the transponder PCB to be tested.

[0057] like Figure 2 As shown, in another PCB test device for a transponder provided in an embodiment of the present application, the PCB test device for a transponder may further include: a relay module 9 for switching a test signal disposed between the driving instrument 2 and the processing circuit 6, and a cable connected between the relay module 9 and the processing circuit 6 includes a four-wire compensation cable 10 and a coaxial shielded cable 11;

[0058] The relay module 9 is connected to the driving instrument 2 through a cable, and is connected to the processing circuit 6 through a four-wire compensation cable 10 and a coaxial shielded cable 11 respectively.

[0059] The relay module 9 can be used to connect the processing circuit 6 and the driving instrument 2. The four-wire compensation cable 10 can be used to compensate the terminal, and the coaxial shielded cable 11 has a shielding layer, which can be used to reduce attenuation and noise interference during signal transmission.

[0060] like Figure 3 As shown, in another PCB test device for a transponder provided in an embodiment of the present application, the processing circuit 6 may include a power supply compensation circuit, a differential input circuit and a filter acquisition circuit, and the power supply compensation circuit, the differential input circuit and the filter acquisition circuit are all provided with an impedance matching circuit and a noise filtering circuit;

[0061] The relay module 9 is connected to the power supply compensation circuit through a four-wire compensation cable 10, and is respectively connected to the differential input circuit and the filter acquisition circuit through a coaxial shielded cable 11.

[0062] Among them, the power supply compensation circuit is used to compensate for the voltage of the terminal. Due to the existence of component internal resistance when providing voltage, the voltage actually applied to the test point of the transponder's PCB is lower than the expected voltage, so the power supply compensation circuit is required to provide part of the lost voltage. The differential input circuit can use one positive and one negative as input. Under the premise of no common ground, the difference between the two is used as the signal amplitude of the input signal, and the signal is transmitted to the test point of the transponder's PCB through the coaxial shielded cable 11. The filter acquisition circuit can remove the noise in the signal through the frequency band selection characteristics, thereby filtering the signal. That is, the filter acquisition module has a low impedance for noise, and the noise can pass directly. For standard signals, the impedance is high, and standard signals are difficult to pass. For example Figure 3 The processing circuit 6 shown has multiple modules, and different modules are connected to form processing modules with different functions. Figure 4 The power supply compensation circuit shown in the figure may include a test point, a reference ground, a pneumatic probe 8, an impedance matching circuit, a filter collection circuit, a power supply + line, a monitoring + line, a power supply - line and a monitoring - line. The test point is the test point of the PCB of the transponder, the reference ground is the grounding point of the PCB of the transponder, the impedance matching circuit and the filter collection circuit are the impedance matching circuit and the filter collection circuit in the processing circuit 6, and the four lines of power supply +, monitoring +, power supply - and detection - are the four lines in the four-wire compensation cable 10. Figure 5The differential compensation circuit shown may include a test point, a reference ground, a pneumatic probe 8, an impedance matching circuit, a filtering and collecting circuit, a coaxial shielded driving cable, and a coaxial shielded collecting cable. The driving and collecting instrument 2 provides a driving signal, which enters the processing circuit 6 through the coaxial shielded driving cable, reaches the pneumatic probe 8 through the impedance matching circuit and the filtering and collecting circuit, and is input into the test point through the pneumatic probe 8. The test point outputs a feedback signal, which enters the processing circuit 6 through the pneumatic probe 8, reaches the coaxial shielded collecting cable through the impedance matching circuit and the filtering and collecting circuit, and is collected by the driving and collecting instrument 2 through the coaxial shielded collecting cable. Figure 6 The filter collection circuit shown may include a test point, a reference ground, a pneumatic probe 8, an impedance matching circuit, a filter collection circuit, and a coaxial shielded cable 11. The drive instrument 2 provides a drive signal, which enters the processing circuit 6 through the coaxial shielded cable 11, reaches the pneumatic probe 8 through the impedance matching circuit and the filter collection circuit, and is input into the test point through the pneumatic probe 8. The test point outputs a feedback signal, which enters the processing circuit 6 through the pneumatic probe 8, reaches the coaxial shielded cable 11 through the impedance matching circuit and the filter collection circuit, and is collected by the drive instrument 2 through the coaxial shielded cable 11.

[0063] Based on the above-mentioned embodiment of the PCB testing device of the transponder, the embodiment of the present application further provides a PCB testing method of the transponder.

[0064] like Figure 7 As shown, the embodiment of the present application also provides a PCB testing method for a transponder, which is applied to Figure 1 The transponder PCB testing device shown, the method may include:

[0065] S10, fixing the PCB of the transponder to be tested by means of a fixture 7;

[0066] S11, start the stable gas source 5;

[0067] S12, controlling the solenoid valve 4 to provide the pneumatic power of the stable air source 5 to at least one single-head pneumatic probe 8 through the second digital control unit 3;

[0068] S13, obtaining a test signal provided by the driving and production instrument 2;

[0069] S14, controlling the at least one inflated single-head pneumatic probe 8 to be electrically connected to the test point on the PCB of the transponder to be tested, so that the test signal acts on the PCB of the transponder to be tested, so as to test the PCB of the transponder to be tested.

[0070] Among them, after the embodiment of the present application starts the stable source, the second digital unit can be used to control the solenoid valve 4 to inflate the pneumatic probe 8, and the needle of the pneumatic probe 8 is extended and connected to the test point on the PCB of the transponder to be tested for testing. The drive instrument 2 provides different test signals according to different test purposes. Among them, if it is a current test, a voltage signal is provided for the test point of the PCB of the transponder; if it is a signal test, a drive signal is provided for the test point of the PCB of the transponder.

[0071] Specifically, if the test signal is a voltage signal, at least one inflated single-head pneumatic probe 8 is controlled to be electrically connected to the test point on the PCB of the transponder to be tested, so that the voltage signal acts on the PCB of the transponder to be tested, so as to perform a current test on the PCB of the transponder to be tested; if the test signal is a drive signal, at least one inflated single-head pneumatic probe 8 is controlled to be electrically connected to the test point on the PCB of the transponder to be tested, so that the drive signal acts on the PCB of the transponder to be tested, so as to perform a signal test on the PCB of the transponder to be tested.

[0072] According to another transponder PCB testing method provided by an embodiment of the present application, the transponder PCB testing device may further include a relay module 9 arranged between the driving instrument 2 and the processing circuit 6. The method may further include step 1:

[0073] Step 1: Control the relay module 9 through the first digital control unit 1 to switch the test signal acting on the PCB of the transponder to be tested.

[0074] The relay module 9 may be a single-pole double-off switch, and different connection modes may correspond to different test signals.

[0075] According to another PCB testing method of a transponder provided in an embodiment of the present application, the processing circuit 6 may include a power supply compensation circuit, the power supply compensation circuit may include an impedance matching circuit and a noise filtering circuit, the power supply compensation circuit may be connected to a single-head pneumatic probe 8, and the power supply compensation circuit may be connected to a driving instrument 2 through a four-wire compensation cable 10. The current test of the PCB of the transponder to be tested in the above step 2 may include steps 2 to 5:

[0076] Step 2: Obtain the voltage signal provided by the drive and production instrument 2;

[0077] Step 3: Providing a voltage signal to the test point on the PCB of the transponder to be tested through the four-wire compensation cable 10, the power supply compensation circuit and the single-head pneumatic probe 8;

[0078] Step 4: The current signal of the test point of the PCB of the transponder to be tested is collected by the driving instrument 2, and sent to the host computer;

[0079] Step 5: Analyze the current signal through the host computer to determine whether the current of the test point of the PCB of the transponder to be tested meets the technical indicators.

[0080] Among them, the voltage signal provided by the driving instrument 2 is input to the test point on the PCB of the transponder to be tested through the four-wire compensation cable 10, the power supply compensation circuit and the single-head pneumatic probe 8, and the parameter data of the test point on the PCB of the transponder to be tested is checked by the host computer to see whether it meets the technical indicators, wherein the technical indicators may include operating current, operating voltage, interface voltage and other indicators.

[0081] According to another PCB testing method of a transponder provided in an embodiment of the present application, the processing circuit 6 includes a differential input circuit and a filter acquisition circuit, the differential input circuit has an impedance matching circuit and a noise filtering circuit, the filter acquisition circuit has an impedance matching circuit and a noise filtering circuit, the differential input circuit and the filter acquisition circuit are respectively connected to a single-head pneumatic probe 8, and the differential input circuit and the filter acquisition circuit are respectively connected to a driving instrument 2 through a coaxial shielded cable 11. The signal test of the PCB of the transponder to be tested in the above step three may include steps six to nine:

[0082] Step 6: Obtain the driving signal provided by the driving instrument 2;

[0083] Step 7: Providing a driving signal to the test point on the PCB of the transponder to be tested through the coaxial shielded cable 11 and the differential compensation circuit;

[0084] Step 8: The feedback signal sent after the test point receives the driving signal through the filter collection circuit and the coaxial shielded cable 11 is collected by the driving instrument 2, and sent to the host computer;

[0085] Step 9: Analyze the feedback signal through the host computer to see if it meets the technical indicators.

[0086] Among them, the driving signal provided by the driving instrument 2 is input to the test point on the PCB of the transponder to be tested through the coaxial shielded cable 11 and the differential compensation circuit. After the test point receives the driving signal, it outputs a feedback signal, wherein the feedback signal may include a high-frequency digital signal and a clock signal, which are the signals required in the process of generating the uplink signal. The clock signal is used to ensure the accuracy of the periodic code rate of the signal, for example, a cycle of a 1MHz square wave or a high-frequency digital signal requires counting 1000 clock cycles. The indicators of the feedback signal may include indicators such as amplitude, rise time, and periodic frequency.

[0087] like Figure 8As shown, the embodiment of the present application also provides an electronic device 70, including at least one processor 701, and at least one memory 702 and a bus 703 connected to the processor 701; wherein the processor 701 and the memory 702 communicate with each other through the bus 703; the processor 701 is used to call the program instructions in the memory 702 to execute the above-mentioned transponder PCB test method. The electronic device 70 in this article can be a server, a PC, etc.

[0088] An embodiment of the present application further provides a storage medium on which a computer program is stored. When the computer program is executed by a processor, each step of the PCB testing method of any of the above-mentioned transponders is implemented.

[0089] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0090] In a typical configuration, the device includes one or more processors (CPU), memory and bus. The device may also include input / output interface, network interface and the like.

[0091] The memory may include non-permanent memory in a computer-readable storage medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip. The memory is an example of a computer-readable medium.

[0092] Computer-readable storage media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include temporary computer-readable media (transitory media), such as modulated data signals and carrier waves.

[0093] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0094] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. It should also be noted that the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0095] Each embodiment in this specification is described in a related manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0096] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A PCB testing device for a transponder, characterized in that: The device comprises: a signal switching module, a probe power module, a fixture module and a cable, wherein the signal switching module comprises a first digital control unit and a driving instrument, the probe power module comprises a second digital control unit, a solenoid valve and a stable gas source, and the fixture module comprises a processing circuit provided with an impedance matching circuit and a noise filtering circuit, a fixture and at least one single-head pneumatic probe; The first digital control unit is connected to the driving and extraction instrument through the cable, and the driving and extraction instrument is connected to the processing circuit through the cable; The processing circuit is connected to the at least one single-head pneumatic probe via the cable; The second digital control unit is connected to the solenoid valve via the cable, the solenoid valve is connected to the stable air source via an air pipe, and is connected to the at least one single-head pneumatic probe via the air pipe; The PCB of the transponder to be tested is fixed by the fixture, so as to be electrically connected to at least one single-head pneumatic probe.

2. The device according to claim 1, characterized in that The PCB testing device of the transponder further comprises: a relay module for switching the test signal arranged between the driving instrument and the processing circuit, and the cable connected between the relay module and the processing circuit comprises a four-wire compensation cable and a coaxial shielded cable; The relay module is connected to the driving instrument through the cable, and is connected to the processing circuit through a four-wire compensation cable and a coaxial shielded cable respectively.

3. The device according to claim 2, characterized in that The processing circuit includes a power supply compensation circuit, a differential input circuit and a filtering and collecting circuit, and the power supply compensation circuit, the differential input circuit and the filtering and collecting circuit are all provided with the impedance matching circuit and the noise filtering circuit; The relay module is connected to the power supply compensation circuit via the four-wire compensation cable, and is respectively connected to the differential input circuit and the filter acquisition circuit via the coaxial shielded cable.

4. A PCB testing method for a transponder, characterized in that: The PCB testing device for the transponder according to claim 1, wherein the method comprises: Fix the PCB of the transponder to be tested by a fixture; Start a stable gas source; Controlling the solenoid valve through a second digital control unit to provide the pneumatic power of the stable air source to at least one single-head pneumatic probe; Obtain the test signal provided by the driving and production instrument; The at least one inflated single-head pneumatic probe is controlled to be electrically connected to a test point on the PCB of the transponder to be tested, so that the test signal acts on the PCB of the transponder to be tested, so as to test the PCB of the transponder to be tested.

5. The method according to claim 4, characterized in that The PCB testing device of the transponder further includes a relay module arranged between the driving instrument and the processing circuit, and the method further includes: The relay module is controlled by the first digital control unit to switch the test signal acting on the PCB of the transponder to be tested.

6. The method according to claim 4, characterized in that The test signal includes a voltage signal and a drive signal, and the at least one single-head pneumatic probe that is inflated is electrically connected to a point to be tested on the PCB of the transponder to be tested, so that the test signal acts on the PCB of the transponder to be tested to test the PCB of the transponder to be tested, including: Controlling the at least one inflated single-head pneumatic probe to be electrically connected to a point to be tested on the PCB of the transponder to be tested, so that a voltage signal acts on the PCB of the transponder to be tested, so as to perform a current test on the PCB of the transponder to be tested; or, The at least one inflated single-head pneumatic probe is controlled to be electrically connected to a test point on the PCB of the transponder to be tested, so as to drive a signal to act on the PCB of the transponder to be tested, so as to perform a signal test on the PCB of the transponder to be tested.

7. The method according to claim 6, characterized in that The processing circuit includes a power supply compensation circuit, the power supply compensation circuit has an impedance matching circuit and a noise filtering circuit, the power supply compensation circuit is connected to the single-head pneumatic probe, and the power supply compensation circuit is connected to the driving instrument through a four-wire compensation cable. The current test of the PCB of the transponder to be tested includes: Acquiring a voltage signal provided by the driving and production instrument; Providing the voltage signal to the point to be tested on the PCB of the transponder to be tested through the four-wire compensation cable, the power supply compensation circuit and the single-head pneumatic probe; The current signal of the test point of the PCB of the transponder to be tested is collected by the driving instrument and sent to the host computer; The host computer analyzes the current signal to determine whether the current at the test point of the PCB of the transponder to be tested meets the technical indicators.

8. The method according to claim 6, characterized in that The processing circuit includes a differential input circuit and a filter collection circuit, the differential input circuit has an impedance matching circuit and a noise filtering circuit, the filter collection circuit has the impedance matching circuit and the noise filtering circuit, the differential input circuit and the filter collection circuit are respectively connected to the single-head pneumatic probe, the differential input circuit and the filter collection circuit are respectively connected to the drive and collection instrument through a coaxial shielded cable, and the signal test on the PCB of the transponder to be tested includes: Acquiring a driving signal provided by the driving instrument; Providing the driving signal to a point to be tested on the PCB of the transponder to be tested through the coaxial shielded cable and the differential compensation circuit; The feedback signal sent after the test point receives the driving signal through the filtering and collecting circuit and the coaxial shielded cable is collected by the driving and collecting instrument, and sent to the host computer; The host computer analyzes whether the indicators of the feedback signal meet the technical indicators.

9. An electronic device, characterized in that: including memory and processor; The memory is used to store programs; The processor is used to execute the program to implement the various steps of the PCB testing method of the transponder according to any one of claims 4 to 8.

10. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, each step of the PCB testing method of a transponder according to any one of claims 4 to 8 is implemented.

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