Circuit board testing device
By designing a circuit board testing device and adopting electrically isolated power supply and serial communication, the problem of cumbersome and time-consuming traditional circuit board testing is solved, and automated testing and efficient and reliable test result feedback are achieved.
Patent Information
- Application Number
- CN202423234481.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-26
AI Technical Summary
Traditional circuit board testing processes are cumbersome and labor-intensive, manual operation is prone to errors, and there is a lack of automated testing methods.
Design a circuit board testing device that includes a power supply unit, a test unit, and a user interaction unit. It adopts an electrically isolated power supply method and uses serial communication to achieve automated testing. The test status and results are displayed through the user interaction unit.
It enables convenient and efficient circuit board testing, improves the reliability of test results and ease of operation, and enhances real-time feedback functionality.
Smart Images
Figure CN223842066U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of circuit board functional testing, and in particular to a circuit board testing device. Background Technology
[0002] Traditional circuit board testing is done manually by quality control technicians. It requires assembling the circuit board to test its various functions. After the functions are tested and found to be normal, the circuit board needs to be removed and replaced. The whole process is cumbersome, time-consuming, and labor-intensive. In addition, there is a greater possibility of error during manual operation. Utility Model Content
[0003] The purpose of this utility model is to provide a circuit board testing device, which mainly solves the problems existing in the prior art and realizes the automated testing of circuit boards.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is to provide a circuit board testing device, characterized in that it includes a power supply unit, a testing unit, and a user interaction unit; the circuit board under test is mounted and fixed on the testing unit; the testing unit is electrically connected to both the testing unit and the user interaction unit; the power supply unit is electrically connected to the circuit board under test through a first channel and connected to both the testing unit and the user interaction unit through a second channel; the first channel and the second channel are electrically isolated from each other.
[0005] Furthermore, the power supply unit includes a first power module, a second power module, an AC contactor, and a transformer-rectifier module. The first power module is connected to the AC contactor through the first channel, and the AC contactor is further connected to the circuit board under test; the second power module is connected to the transformer-rectifier module through the second channel; the transformer-rectifier module is further connected to the test unit and the user interaction unit.
[0006] Furthermore, the power supply unit also includes a first air switch and a second air switch; the first air switch is installed at the input terminal of the first power supply module; and the second air switch is installed at the input terminal of the second power supply module.
[0007] Furthermore, the first power module uses 380 volt AC power as input; the first circuit breaker is a four-pole circuit breaker.
[0008] Furthermore, the second power module uses 220-volt AC power as input; the second air switch is a double-pole air switch.
[0009] Furthermore, the power supply unit also includes an emergency stop switch; the emergency stop switch is disposed between the AC contactor and the circuit board under test.
[0010] Furthermore, the test unit includes a switch button, an indicator light, and a management module; the power supply unit is connected to the management module via the switch button; the management module has internal control connected to the indicator light and external control connected to the user interaction unit and the circuit board under test.
[0011] Furthermore, the user interaction unit includes a display screen and an input module; the display screen is connected to the output terminal of the test unit; and the input module is connected to the input terminal of the test unit.
[0012] Furthermore, the test unit is connected to the display screen and the input module via a serial port.
[0013] Furthermore, the test unit is connected to the circuit board under test via a serial port.
[0014] In view of the above technical features, the circuit board testing device of this utility model has the following significant advantages compared with the prior art:
[0015] 1. The circuit board testing device of this utility model is convenient and easy to operate, improves the working efficiency of testing circuit boards, and increases the reliability of test results.
[0016] 2. The circuit board testing device of this utility model adopts a user interaction unit as the human-computer interaction platform in the testing process. The display interface is clear and easy to understand, and the operation process is simple and convenient, realizing high-efficiency and high-precision testing functions.
[0017] 3. The circuit board testing device of this utility model adopts a user interaction unit to provide real-time feedback on the test status, which makes it convenient to judge the real-time working status of the circuit board under test. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of a preferred embodiment of the circuit board testing device of this utility model.
[0019] In the diagram: 100 - Power supply unit, 200 - Test unit, 300 - User interaction unit, 400 - Circuit board under test;
[0020] 101-First power supply module, 102-Second power supply module, 103-First air switch, 104-Second air switch, 105-AC contactor, 106-Transformer rectifier module, 107-Emergency stop switch;
[0021] 201 - Switch button, 202 - Indicator light, 203 - Management module;
[0022] 301 - Display screen, 302 - Input module. Detailed Implementation
[0023] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.
[0024] Please see Figure 1 This utility model discloses a circuit board testing device. As shown in the figure, a preferred embodiment of it consists of a power supply unit 100, a testing unit 200 and a user interaction unit 300, and is used to test the circuit board 400 under test.
[0025] During testing, the circuit board under test (PCB) 400 is positioned and fixed on the test unit 200 using probes, and an electrical connection is established between them. They exchange test information via a serial port. The power supply of the PCB 400 is isolated from that of the test unit 200. Specifically, the PCB 400 is connected through the first channel of the power supply unit 100, while the test unit 200 and the user interaction unit 300 are connected through the second channel of the power supply unit 100. The first and second channels are electrically isolated, thus preventing mutual interference between the PCB 400, the test unit 200, and the user interaction unit 300.
[0026] Test unit 200 is also connected to power supply unit 100, receiving power from it. It is also electrically connected to user interaction unit 300 via serial port, using user interaction unit 300 to obtain user input from the tester. Specifically, test unit 200 includes a switch button 201, indicator lights 202, and management module 203. The switch button 201 is connected to power supply unit 100 and controls the power supply to test unit 200 itself, determining whether power supply unit 100 can supply power to other parts of test unit 200. Indicator lights 202 are connected to management module 203 and are controlled by management module 203. Management module 203 is the core module of test unit 200, typically a microprocessor or programmable logic array. Management module 203 has multiple serial communication ports, connected to user interaction unit 300 and circuit board under test 400 respectively. Management module 203 converts user input from user interaction unit 300 into test commands, which are then sent to circuit board under test 400 via serial port for execution. During the execution of test commands, the circuit board under test 400 will send different test statuses to the management module 203 via serial port according to different test commands. The management module 203 uses indicator lights 202 to provide feedback on some or all test statuses to the tester, and also sends all test statuses to the user interaction unit 300 via serial port for display to the tester. Once all test commands are completed, the management module 203 combines all test statuses corresponding to that test command to generate test results, and then sends the test results to the user interaction unit 300 via serial port for display to the tester.
[0027] The user interaction unit 300 includes a display screen 301 and an input module 302. The display screen 301 is an output module that connects to the management module 203 in the test unit 300 via a serial port, responsible for displaying the test status and results to the testers. The input module 302 is used to acquire user input from the testers and then transmit it to the management module 203 via serial communication. In other embodiments, a single device with input functionality can replace the display screen 301 and input module 302, such as a touchscreen with serial communication.
[0028] In this embodiment, the power supply unit 100 includes a first power module 101, a second power module 102, a first air switch 103, a second air switch 104, an AC contactor 105, a transformer rectifier module 106, and an emergency stop switch 107. The first power module 101 and the second power module 102 are electrically isolated from each other.
[0029] The first power module 101 provides a 380-volt output voltage, which is connected to an external 380-volt three-phase AC power supply. A four-pole circuit breaker, designated as the first circuit breaker 103, is installed between the first power module 101 and the external three-phase AC power supply. The first circuit breaker 103 automatically disconnects the connection to the external three-phase AC power supply in the event of an abnormality in the first power module 101. The output of the first power module 101 is connected to the circuit board under test 400 via an AC contactor 105 and an emergency stop switch 107, supplying power to the circuit board under test 400. When an abnormality occurs during testing, the emergency stop switch 107 will quickly cut off the power supply to the circuit board under test 400, ensuring safety.
[0030] The second power module 102 provides a 220-volt output voltage, which is connected to an external 220-volt single-phase AC power supply. A double-pole circuit breaker, designated as a second circuit breaker 104, is installed between the second power module 102 and the external single-phase AC power supply. The second circuit breaker 104 automatically disconnects the connection to the external single-phase AC power supply in case of an abnormality in the second power module 102. The second power module 102 is connected to a transformer-rectifier module 106 as its input. The transformer-rectifier module 106 converts the 220V AC power into 12V DC power, which serves as the power supply for the test unit 200 and the user interaction unit 300.
[0031] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.
Claims
1. A circuit board testing device, characterized in that, It includes a power supply unit, a test unit, and a user interaction unit; the circuit board under test is mounted and fixed on the test unit; the test unit is electrically connected to both the test unit and the user interaction unit; the power supply unit is electrically connected to the circuit board under test through a first channel and to both the test unit and the user interaction unit through a second channel; the first channel and the second channel are electrically isolated from each other.
2. The circuit board testing device as described in claim 1, characterized in that, The power supply unit includes a first power module, a second power module, an AC contactor, and a transformer-rectifier module; the first power module is connected to the AC contactor through a first channel, and the AC contactor is further connected to the circuit board under test; the second power module is connected to the transformer-rectifier module through a second channel; the transformer-rectifier module is further connected to the test unit and the user interaction unit.
3. The circuit board testing device as described in claim 2, characterized in that, The power supply unit further includes a first air switch and a second air switch; the first air switch is installed at the input terminal of the first power supply module; the second air switch is installed at the input terminal of the second power supply module.
4. The circuit board testing apparatus as described in claim 3, characterized in that, The first power module uses 380 volts AC as input; the first circuit breaker is a four-pole circuit breaker.
5. The circuit board testing apparatus as described in claim 3, characterized in that, The second power module uses 220 volt AC power as input; the second air switch is a double-pole air switch.
6. The circuit board testing apparatus as described in claim 2, characterized in that, The power supply unit also includes an emergency stop switch; the emergency stop switch is disposed between the AC contactor and the circuit board under test.
7. The circuit board testing apparatus as described in claim 1, characterized in that, The test unit includes a switch button, indicator lights, and a management module; the power supply unit is connected to the management module via the switch button; the management module's internal control is connected to the indicator lights, and its external control is connected to the user interaction unit and the circuit board under test.
8. The circuit board testing apparatus as described in claim 1, characterized in that, The user interaction unit includes a display screen and an input module; the display screen is connected to the output terminal of the test unit; the input module is connected to the input terminal of the test unit.
9. The circuit board testing apparatus as described in claim 8, characterized in that, The test unit is connected to the display screen and the input module via a serial port.
10. The circuit board testing apparatus as described in claim 1, characterized in that, The test unit is connected to the circuit board under test via a serial port.