Circuit board detection system, method, device and storage medium

Abstract

The present invention discloses a circuit board detection system, method, device and storage medium, the system belongs to the technical field of circuit board detection, the system comprises a first control circuit and a second control circuit, the first end of the first control circuit is connected to the second control circuit, the second end of the first control circuit is connected to the target circuit board; wherein the first control circuit and the second control circuit reuse part of the power supply circuit. The circuit board detection system provided by the present invention can reduce manufacturing costs.

Description

Technical Field

[0001] The present invention relates to the technical field of charging control, and more specifically, to a circuit board detection system, method, device and storage medium. Background Art

[0002] With the widespread application of electronic devices, circuit boards are important components in electronic devices. Before electronic devices are put on the market, they need to be tested. In the prior art, in order to detect circuit boards, the existing circuit board detection system can manage branch processors through a central processor, and each branch processor can detect a circuit board. However, the central processor and the branch processor require power supplies of different voltages, and the manufacturing cost is high. Summary of the invention

[0003] Embodiments of the present disclosure provide a circuit board detection system, method, and device.

[0004] According to a first aspect of the present invention, there is provided a circuit board detection system, the system comprising a first control circuit and a second control circuit, wherein a first end of the first control circuit is connected to the second control circuit, and a second end of the first control circuit is connected to a target circuit board;

[0005] Wherein, the first control circuit and the second control circuit reuse part of the power supply circuit.

[0006] Optionally, the first control circuit includes a conversion circuit, a main control chip and a serial port chip. The first end of the conversion circuit is connected to the partial power supply circuit, the second end of the conversion circuit is connected to the first end of the main control chip, the second end of the conversion circuit is used to output a first direct current, the second end of the main control chip is connected to the first end of the serial port chip, the third end of the conversion circuit is connected to the second end of the serial port chip, and the third end of the conversion circuit is used to output a second direct current.

[0007] Optionally, the conversion circuit includes a first conversion circuit and a second conversion circuit, the first end of the first conversion circuit serves as the first end of the conversion circuit, the second end of the first conversion circuit serves as the third end of the conversion circuit, the third end of the first conversion circuit is connected to the first end of the second conversion circuit, and the second end of the second conversion circuit serves as the second end of the conversion circuit.

[0008] Optionally, the system further includes a display circuit, a first end of the display circuit is connected to the fourth end of the second conversion circuit, and a second end of the display circuit is connected to the third end of the main control chip.

[0009] According to a second aspect of the present invention, a circuit board detection method is provided, wherein the power supply control method is applied to the circuit board detection system as described in the first aspect, wherein the circuit board detection system comprises a second control circuit and a first control circuit, and the circuit board detection method is performed by the second control circuit; the method further comprises:

[0010] In response to a test request, controlling the first control circuit to power on;

[0011] receiving identification information fed back by the first control circuit;

[0012] Determine the indicated first control circuit according to the identification and the detection item indicated by the test request, and output a detection instruction to the indicated first control circuit; wherein different detection items correspond to different detection instructions;

[0013] The detection result output by the first control circuit is received, and the display circuit is controlled to display the detection result.

[0014] Optionally, after controlling the first control circuit to be powered on, the method further includes:

[0015] When the first control circuit outputs a short-circuit signal, the control display circuit displays that a fault occurs in the first control circuit.

[0016] Optionally, the detection items include detecting the power supply voltage of the target circuit board, the sampling voltage of each pin of the target circuit board, the operating parameters of the functional modules of the target circuit board and the operating parameters of the target circuit board in a set order.

[0017] According to a third aspect of the present invention, there is provided a circuit board detection device, the device comprising:

[0018] A response module, configured to control the first control circuit to power on in response to a test request;

[0019] A receiving module, used to receive identification information fed back by the first control circuit;

[0020] A determination module, used to determine the indicated first control circuit according to the identification and the detection item indicated by the test request, and output a detection instruction to the indicated first control circuit; wherein different detection items correspond to different detection instructions;

[0021] The control module is used to receive the detection result output by the first control circuit and control the display circuit to display the detection result.

[0022] According to a fourth aspect of the present invention, there is provided a circuit board detection device, comprising a memory and a processor, wherein the memory is used to store a computer program; the processor is used to execute the computer program to implement the method according to the second aspect.

[0023] According to a fifth aspect of the present disclosure, a computer-readable storage medium is further provided, on which a computer program is stored. When the computer program is executed by a processor, the method according to the second aspect of the present disclosure is implemented.

[0024] According to an embodiment of the present disclosure, the circuit board detection system provided by the present invention can reuse the first control circuit and part of the power supply circuit of the second control circuit, which can effectively reduce the manufacturing cost of the circuit board detection system.

[0025] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0027] Figure 1 is a structural block diagram of a circuit board detection system according to an embodiment;

[0028] Figure 2 is a structural block diagram of a circuit board detection system according to another embodiment;

[0029] Figure 3 is a flowchart of a circuit board detection method according to an embodiment;

[0030] Figure 4 is a structural block diagram of a circuit board detection device according to an embodiment;

[0031] Figure 5 1 is a hardware structure diagram of a circuit board detection device according to an embodiment. DETAILED DESCRIPTION

[0032] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0033] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0034] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0035] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0036] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0037] <System Embodiment>

[0038] Figure 1 The figure is a schematic diagram of the structure of a circuit board detection system that can be applied according to an embodiment.

[0039] like Figure 1 As shown, the system includes a first control circuit 10 and a second control circuit 20, wherein the first end of the first control circuit 10 is connected to the second control circuit 20, and the second end of the first control circuit 10 is connected to the target circuit board 30; wherein the first control circuit 10 and the second control circuit 20 reuse part of the power supply circuit.

[0040] In some examples, the first control circuit 10 may be multiple, and the corresponding probes 16 may be used to detect different circuit boards, such as Figure 2 As shown, the first control circuit 10a detects the target circuit board 30a and feeds back the detection result to the second control circuit 20. The first control circuit 10b detects the target circuit board 30b and feeds back the detection result to the second control circuit 20. The first control circuit 10c detects the target circuit board 30c and feeds back the detection result to the second control circuit 20. The first control circuit 10 and the second control circuit 20 can communicate and interact via RS485 communication.

[0041] In this embodiment, the multiplexing part power supply circuit may be a power supply source or a conversion circuit, and the conversion circuit may convert the direct current or alternating current output by the power supply source into direct current of a required voltage value.

[0042] In other words, by reusing part of the power supply circuits of the first control circuit 10 and the second control circuit 20 , the manufacturing cost of the circuit board detection system can be effectively reduced.

[0043] In some embodiments, the first control circuit 10 includes a conversion circuit, a main control chip 13 and a serial port chip 14, the first end of the conversion circuit is connected to the partial power supply circuit, the second end of the conversion circuit is connected to the first end of the main control chip 13, the second end of the conversion circuit is used to output a first direct current, the second end of the main control chip 13 is connected to the first end of the serial port chip 14, the third end of the conversion circuit is connected to the second end of the serial port chip 14, and the third end of the conversion circuit is used to output a second direct current.

[0044] In some examples, the conversion circuit may be a DC-DC conversion circuit, the first end of which may be connected to a third DC power of 24V, the second end of which may output a first DC power of 3.3V, and the third end of which may output a second DC power of 5V. In other words, by converting the third DC power into two DC powers of different voltage values ​​to supply power to the main control chip 13 and the serial port chip 14, a single power supply may be used to supply power to the main control chip 13 and the second control circuit 20.

[0045] In some embodiments, the conversion circuit includes a first conversion circuit 11 and a second conversion circuit 12, the first end of the first conversion circuit 11 serves as the first end of the conversion circuit, the second end of the first conversion circuit 11 serves as the third end of the conversion circuit, the third end of the first conversion circuit 11 is connected to the first end of the second conversion circuit 12, and the second end of the second conversion circuit 12 serves as the second end of the conversion circuit.

[0046] In some examples, the first conversion circuit 11 is, for example, a DC-DC conversion circuit, and the second conversion circuit 12 is, for example, a low dropout linear regulator (Low Dropout Regulartor, LDO).

[0047] In other words, the first conversion circuit 11 and the second conversion circuit 12 can convert the third DC power into two DC powers with different voltage values ​​to power the main control chip 13 and the serial port chip 14, so as to realize a single power supply to power the main control chip 13 and the second control circuit 20.

[0048] In some embodiments, the system further includes a display circuit 15 , a first end of the display circuit 15 is connected to a fourth end of the second conversion circuit 12 , and a second end of the display circuit 15 is connected to a third end of the main control chip 13 .

[0049] In some examples, the display circuit 15 may include a display chip and a serial touch screen, the first end of the display chip may be connected to the fourth end of the second conversion circuit 12, the second end of the display chip is connected to the first end of the serial touch screen, the third end of the display chip is connected to the main control chip 13, and the second end of the serial touch screen receives a third direct current of 24V. The serial touch screen may communicate and interact with the second control circuit 20 using RS232 communication.

[0050] In other words, by providing the display circuit 15 , the detection result of the target circuit board 30 can be viewed more intuitively.

[0051] In the embodiment of the present disclosure, the memory of the first control circuit 10 is used to store a computer program, and the computer program is used to control the processor of the first control circuit 10 to operate according to the control method of material strip unloading in any embodiment. The technician can design the computer program according to the scheme of the embodiment of the present disclosure. How the computer program controls the processor to operate is well known in the art, so it will not be described in detail here.

[0052] <Method Example>

[0053] Figure 3 is a flow chart of a power supply control method according to an embodiment. Figure 1 The second control circuit 20.

[0054] like Figure 2 As shown, the power supply control method of this embodiment may include the following steps S310 to S340:

[0055] Step S310: In response to a test request, controlling the first control circuit to power on.

[0056] In some examples, the user can place the target circuit board on the carrier of the tooling frame base corresponding to the first control circuit, and the first controller can be placed on the pressure plate seat. The base and the pressure plate seat are both provided with positioning columns, so that the target circuit board can be restricted on the carrier by the positioning columns, and the first controller can also be restricted on the pressure plate seat by the positioning columns to ensure that the probe on the first controller can accurately contact the target circuit board. Each first controller is configured with different probes, one or more probes correspond to different identification information, and the second control circuit can control the first control circuit to perform different tests on the target circuit board after receiving different identification information.

[0057] In some examples, when a user clicks a "one-button test" control on the display touch screen, it means that the user sends a corresponding test request, and the detection system of the circuit board starts running, which can control the first control circuit to power on.

[0058] Step S320: receiving identification information fed back by the first control circuit.

[0059] In some examples, when the first control circuit is powered on, the second control circuit can determine the test indicated by the first control circuit by the connection status of the probe of the first control circuit. For example, the first control circuit T0 has probes t1, t2, and t3. When probe t1 is connected to the target circuit board, the second control circuit can obtain the identification information of [t1, 1; t2, 0; t3, 0]. Then, the second control circuit can determine that the identification information fed back by the first control circuit T0 can indicate that the first control circuit T0 needs to perform the test corresponding to t1.

[0060] In some embodiments, after step S310, the method further includes the following step S410:

[0061] Step S410: When the first control circuit outputs a short-circuit signal, the display circuit is controlled to display that a fault occurs in the first control circuit.

[0062] In some examples, when a short circuit or an open circuit occurs in a first control circuit, the display circuit may display the fault and indicate the cause, and an indicator light configured in the display circuit may display red to alert the user.

[0063] Step S330, determining the indicated first control circuit according to the identifier and the detection item indicated by the test request, and outputting a detection instruction to the indicated first control circuit; wherein different detection items correspond to different detection instructions.

[0064] In some embodiments, the detection items include detecting the power supply voltage of the target circuit board, the sampling voltage of each pin of the target circuit board, the operating parameters of the functional modules of the target circuit board, and the operating parameters of the target circuit board in a set order.

[0065] When the first control circuit outputs no short-circuit signal, the display circuit can display the message "Test step 1 completed" and automatically enter the next test step, and the indicator light of the display circuit flashes three times alternately. After the flashing ends, the second control circuit controls the touch screen of the display circuit to display "Start test 2", and then the first control circuit powers on the target circuit board and starts the next test. The first detection item can be the detection of the power module to ensure that the voltage output is normal, and then the probe is used to measure whether the voltage of each power supply end of the target circuit board is normal. If abnormal, the detection is stopped, and the fault is prompted and the cause is indicated. The indicator light of the display circuit turns red to prompt the user.

[0066] When it is determined that the power supply is normal, the touch screen of the display circuit displays "Test step 2 completed", automatically enters the next test step, and the indicator light of the display circuit flashes three times alternately. After the flashing ends, the second control circuit controls the touch screen of the display circuit to display "Start test 3", and starts the power-on and power-off test. During this process, the power-on and power-off timing, the peak value of the impact current and the current discharge rate, etc. are detected. After the test is completed, if it is normal, the second control circuit controls the touch screen to display "Test step 3 completed", and automatically enters the next test step.

[0067] The second control circuit controls the display touch screen to display "Start Test 4" and enter the IO port detection. First, the input and output pins of the target circuit board are detected. The second control circuit controls the first control circuit to output high and low levels to the output pins or input pins of the target circuit board to detect whether the level of the target circuit board is normal. The first control circuit applies an input signal to detect whether the target circuit board obtains the correct input signal. The control pins of the target circuit board are configured with different required functions. The first control circuit can provide control signals and input signals, and read the output signals of the target circuit board in real time, obtain typical values ​​such as the tested voltage value and current value, and feed them back to the second control circuit. The second control circuit analyzes whether there is a fault on the target circuit board. If there is a fault, the touch screen displays the fault and indicates the cause. The indicator light of the display circuit turns red to prompt the user. If it is normal, the touch screen displays "Test Step 4 Completed" and automatically enters the next test step.

[0068] The second control circuit controls the display touch screen to display "Start test 5" to test the digital signal and analog signal. After the test is completed, the communication module, acquisition module, display module, etc. of the target circuit board are functionally tested to ensure that the target circuit board can work normally. If the second control circuit determines that the target circuit board has a fault, the fault is displayed on the touch screen and the cause is indicated. The indicator light of the display circuit turns red to prompt the user. Otherwise, the test is completed, and the second control circuit controls the touch screen to display "Test normal", and the indicator light of the display circuit turns green to indicate a normal state.

[0069] Subsequently, the second control circuit controls the display touch screen to display "Start production test", and the second control circuit starts to send the first controller to download the production program instruction. The first controller receives the production program instruction and downloads the production program to the target circuit board. After the production program of the target circuit board is downloaded, the target circuit board can be functionally tested. First, verify whether the initialization parameters of the target circuit board are correct. After the target circuit board sends the working parameters to the first control circuit for comparison, the first control circuit feeds back the comparison results to the second control circuit, and the test results and progress are displayed on the touch screen. If the parameter initialization is normal, proceed to the next step. The first control circuit applies different input signals to the target circuit board to detect whether the alarm signal and the peripheral output are normal. After the test is completed, proceed to the next step, send a batch parameter modification instruction, the target circuit board sends the modified parameters to the first control circuit for verification, test whether the parameters can be modified normally, and perform power-off operation after normal modification. Power on and resend the parameters to the first control circuit. The first control circuit checks whether the parameters can be saved by power-off. If it is normal, different input signals are applied to perform batch zeroing and batch multi-point calibration operations, and the input signals are controlled for verification. After the verification is completed, the production test step is completed, and the second control circuit controls the touch screen to display "Production test has ended", and the target circuit board can be removed.

[0070] Step S340, receiving the detection result output by the first control circuit, and controlling the display circuit to display the detection result.

[0071] In some examples, the detection results are, for example, abnormal power supply voltage of the first control circuit, abnormal sampling voltage of a pin of the second control circuit, normal working parameters of the functional module of the second control circuit, etc., which are not limited here.

[0072] <Equipment Example 1>

[0073] Figure 4 FIG. 1 is a schematic block diagram of a circuit board detection device according to an embodiment. Figure 4 As shown, the circuit board detection device 400 may include:

[0074] A response module 410, configured to control the first control circuit to power on in response to a test request;

[0075] A receiving module 420, configured to receive identification information fed back by the first control circuit;

[0076] A determination module 430, configured to determine the indicated first control circuit according to the identification and the detection item indicated by the test request, and output a detection instruction to the indicated first control circuit; wherein different detection items correspond to different detection instructions;

[0077] The control module 440 is used to receive the detection result output by the first control circuit, and control the display circuit to display the detection result.

[0078] Optionally, the circuit board detection device 400 further includes a fault control module, which is used to control the display circuit to display that a fault occurs in the first control circuit when the first control circuit outputs a short-circuit signal.

[0079] The circuit board detection device 400 may be Figure 1 The second control circuit 20 in.

[0080] <Equipment Example 2>

[0081] Figure 5 It is a schematic diagram of the hardware structure of a circuit board detection device according to another embodiment.

[0082] like Figure 5 As shown, the circuit board detection device 500 includes a processor 510 and a memory 520, the memory 520 is used to store an executable computer program, and the processor 510 is used to execute a method such as any of the above method embodiments under the control of the computer program.

[0083] The circuit board detection device 500 may be Figure 1 The second control circuit 20 in.

[0084] Each module of the above circuit board detection device 400 can be implemented by the processor 510 in this embodiment executing a computer program stored in the memory 520, or can be implemented by other structures, which is not limited here.

[0085] The present invention may be a system, a method and / or a computer program product. The computer program product may include a computer-readable storage medium carrying computer-readable program instructions for causing a processor to implement various aspects of the present invention.

[0086] A computer-readable storage medium may be a tangible device that can hold and store instructions used by an instruction execution device. A computer-readable storage medium may be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. More specific examples of computer-readable storage media (a non-exhaustive list) include: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a static random access memory (SRAM), a portable compact disk read-only memory (CD-ROM), a digital versatile disk (DVD), a memory stick, a floppy disk, a mechanical encoding device, such as a punch card or a raised structure in a groove on which instructions are stored, and any suitable combination of the foregoing. As used herein, a computer-readable storage medium is not to be interpreted as a transient signal per se, such as a radio wave or other freely propagating electromagnetic wave, an electromagnetic wave propagating through a waveguide or other transmission medium (e.g., a light pulse through a fiber optic cable), or an electrical signal transmitted through a wire.

[0087] The computer-readable program instructions described herein can be downloaded from a computer-readable storage medium to each computing / processing device, or downloaded to an external computer or external storage device via a network, such as the Internet, a local area network, a wide area network, and / or a wireless network. The network can include copper transmission cables, optical fiber transmissions, wireless transmissions, routers, firewalls, switches, gateway computers, and / or edge servers. The network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in the computer-readable storage medium in each computing / processing device.

[0088] The computer program instructions for performing the operation of the present invention may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages, such as Smalltalk, C++, etc., and conventional procedural programming languages, such as "C" language or similar programming languages. Computer-readable program instructions may be executed entirely on a user's computer, partially on a user's computer, as an independent software package, partially on a user's computer, partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., using an Internet service provider to connect via the Internet). In some embodiments, an electronic circuit, such as a programmable logic circuit, a field programmable gate array (FPGA), or a programmable logic array (PLA), may be personalized by utilizing the state information of the computer-readable program instructions, and the electronic circuit may execute the computer-readable program instructions, thereby realizing various aspects of the present invention.

[0089] Various aspects of the present invention are described herein with reference to the flow charts and / or block diagrams of the methods, devices (systems) and computer program products according to embodiments of the present invention. It should be understood that each box of the flow chart and / or block diagram and the combination of each box in the flow chart and / or block diagram can be implemented by computer-readable program instructions.

[0090] These computer-readable program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, thereby producing a machine, so that when these instructions are executed by the processor of the computer or other programmable data processing device, a device that implements the functions / actions specified in one or more boxes in the flowchart and / or block diagram is generated. These computer-readable program instructions can also be stored in a computer-readable storage medium, and these instructions cause the computer, programmable data processing device, and / or other equipment to work in a specific manner, so that the computer-readable medium storing the instructions includes a manufactured product, which includes instructions for implementing various aspects of the functions / actions specified in one or more boxes in the flowchart and / or block diagram.

[0091] Computer-readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device so that a series of operating steps are performed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process, thereby causing the instructions executed on the computer, other programmable data processing apparatus, or other device to implement the functions / actions specified in one or more boxes in the flowchart and / or block diagram.

[0092] The flow charts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the systems, methods and computer program products according to multiple embodiments of the present invention. In this regard, each box in the flow chart or block diagram can represent a part of a module, a program segment or an instruction, and a part of the module, a program segment or an instruction contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented by a dedicated hardware-based system that performs the specified function or action, or can be implemented by a combination of dedicated hardware and computer instructions. It is well known to those skilled in the art that it is equivalent to implement it by hardware, implement it by software, and implement it by combining software and hardware.

[0093] Embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the marketplace, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the present invention is defined by the appended claims.

Claims

1. A circuit board detection system, characterized in that: It includes a first control circuit and a second control circuit, wherein a first end of the first control circuit is connected to the second control circuit, and a second end of the first control circuit is connected to a target circuit board; Wherein, the first control circuit and the second control circuit reuse part of the power supply circuit; The first control circuit includes a conversion circuit, a main control chip and a serial port chip. The first end of the conversion circuit is connected to the partial power supply circuit, the second end of the conversion circuit is connected to the first end of the main control chip, the second end of the conversion circuit is used to output a first direct current, the second end of the main control chip is connected to the first end of the serial port chip, the third end of the conversion circuit is connected to the second end of the serial port chip, and the third end of the conversion circuit is used to output a second direct current; wherein the first direct current and the second direct current are direct currents of different voltage values.

2. The circuit board detection system according to claim 1, characterized in that: The conversion circuit includes a first conversion circuit and a second conversion circuit, the first end of the first conversion circuit serves as the first end of the conversion circuit, the second end of the first conversion circuit serves as the third end of the conversion circuit, the third end of the first conversion circuit is connected to the first end of the second conversion circuit, and the second end of the second conversion circuit serves as the second end of the conversion circuit.

3. The circuit board detection system according to claim 2, characterized in that: The system further includes a display circuit, a first end of the display circuit is connected to the fourth end of the second conversion circuit, and a second end of the display circuit is connected to the third end of the main control chip.

4. A circuit board detection method, characterized in that: The power supply control method is applied to the circuit board detection system according to any one of claims 1 to 3, and the circuit board detection method is executed by a second control circuit; the method further includes: In response to a test request, controlling the first control circuit to power on; receiving identification information fed back by the first control circuit; Determine the indicated first control circuit according to the identification and the detection item indicated by the test request, and output a detection instruction to the indicated first control circuit; wherein different detection items correspond to different detection instructions; The detection result output by the first control circuit is received, and the display circuit is controlled to display the detection result.

5. The circuit board detection method according to claim 4, characterized in that: After controlling the first control circuit to be powered on, the method further includes: When the first control circuit outputs a short-circuit signal, the control display circuit displays that a fault occurs in the first control circuit.

6. The circuit board detection method according to claim 4, characterized in that: The detection items include detecting the power supply voltage of the target circuit board, the sampling voltage of each pin of the target circuit board, the working parameters of the functional modules of the target circuit board and the working parameters of the target circuit board in a set order.

7. A circuit board detection device, characterized in that: The device applies the method according to any one of claims 4 to 6, and the device comprises: A response module, configured to control the first control circuit to power on in response to a test request; A receiving module, used to receive identification information fed back by the first control circuit; A determination module, used to determine the indicated first control circuit according to the identification and the detection item indicated by the test request, and output a detection instruction to the indicated first control circuit; wherein different detection items correspond to different detection instructions; The control module is used to receive the detection result output by the first control circuit and control the display circuit to display the detection result.

8. A circuit board detection device, characterized in that: It comprises a memory and a processor, wherein the memory is used to store a computer program; and the processor is used to execute the computer program to implement the circuit board detection method according to any one of claims 4 to 6.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the computer program implements the circuit board detection method according to any one of claims 4 to 6.

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