A full-automatic testing system for circuit board

Abstract

The utility model discloses a kind of full-automatic test systems of circuit board, comprising: control module, multimeter, processor module, HUB, relay module, power module, burner and PCA;The control module is equipped with multiplex relay;The control module is connected with the multiple voltage test points of PCA by multiplex relay, and the control module is controlled by multiplex relay to turn on and disconnect voltage test point and multimeter;The control module is connected with HUB by serial port conversion USB, and HUB is coupled to processor module;Multiplex relay in the control module one way is externally connected with a relay module, one end of the relay module is connected to mains input end by coupling master switch, and the other end is coupled to power module. Improve security, reduce the possibility that operating personnel contact mains, reduce the problem such as static electricity damage ESD introduced by relevant personnel in operation process.

Description

Technical Field

[0001] This utility model relates to the field of measurement technology, specifically a fully automatic testing system for circuit boards. Background Technology

[0002] Currently, after many PCBs are soldered, it is necessary to manually test the short circuit status and voltage level, record the relevant test data on paper, upload the relevant data to the relevant system, and then manually burn the firmware program.

[0003] Manual testing is inefficient and prone to errors or loss of data recording; it is also easy to damage ICs due to operational mistakes; some AC-powered components pose a risk of electric shock to operators; and it can also easily damage testing equipment.

[0004] Existing technologies can no longer meet people's current needs, and based on the current situation, there is an urgent need to improve existing technologies. Utility Model Content

[0005] The purpose of this invention is to provide a fully automated testing system for circuit boards to solve the problems mentioned in the background art.

[0006] This utility model provides the following technical solution: a fully automatic testing system for circuit boards, including: a control module, a multimeter, a processor module, a HUB (hub), a relay module, a power supply module, a programmer, and a PCA (PCB circuit board with soldered components, i.e., the PCB circuit board to be tested).

[0007] The control module is equipped with multiple relays, and each of the multiple relays has a common ground and a common terminal connected to a multimeter.

[0008] The control module connects to multiple voltage test points of the PCA via multiple relays, and the control module controls the connection and disconnection between the voltage test points and the multimeter via multiple relays.

[0009] The control module is connected to the HUB via a serial-to-USB converter, and the HUB is coupled to the processor module.

[0010] The processor module is connected to an external PC (computer).

[0011] One of the multiple relays in the control module is externally connected to a relay module. One end of the relay module is connected to the mains input terminal through a coupling main switch, and the other end is coupled to the power supply module.

[0012] The power module is connected to the power supply terminal of the PCA, and the power module supplies power to the PCA by outputting multiple voltages;

[0013] The multimeter is connected to the HUB via USB, and the processor module communicates with the multimeter through the HUB to control the multimeter to read the resistance value of the voltage test point.

[0014] One end of the programmer is connected to the PCA, and the other end is connected to the HUB via USB. When the voltage values ​​at the voltage test points mentioned above are all within a reasonable range, the processor module programs the firmware to the PCA through the HUB and the programmer.

[0015] The present invention has the following beneficial effects: (1) The entire testing process is fully automated, which improves production efficiency, reduces the risks and losses caused by operational errors, and extends the life of testing equipment and products; it improves the reliability and traceability of test data, which is conducive to statistical analysis and product optimization.

[0016] (2) Improved safety, reduced the possibility of operators coming into contact with mains power, and reduced the problem of ESD damage caused by static electricity introduced by relevant personnel during operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the present utility model without creative effort are within the protection scope of the present utility model.

[0019] refer to Figure 1 This utility model provides the following technical solution: a fully automatic testing system for circuit boards, comprising: a control module, a multimeter, a processor module, a hub, a relay module, a power supply module, a programmer, and a PCA;

[0020] The control module is equipped with multiple relays, and each relay has a common ground and a common terminal for connecting to a multimeter.

[0021] The control module connects multiple voltage test points of the PCA via multiple relays; the control module controls the connection and disconnection between the voltage test points and the multimeter via multiple relays.

[0022] The control module is connected to the HUB via a serial-to-USB converter, and the HUB is coupled to the processor module. The processor module communicates with the control module through the HUB, and the processor module tests the resistance value of the voltage test point of the PCA by controlling the switching of the multiple relays of the control module.

[0023] One of the multiple relays in the control module is also connected to another relay module. One end of the relay module is connected to the mains input terminal through a coupling main switch, and the other end of the relay module is coupled to the power supply module.

[0024] The main switch remains open. On the one hand, the mains power supplies the multimeter through the main switch. On the other hand, when the relay module is turned on, the mains power is input to the power module through the main switch and the relay module in sequence.

[0025] The power module is connected to the power supply terminal of the PCA, and the power module can output multiple voltages (DC) to power the PCA.

[0026] The multimeter is connected to the HUB via USB, and the processor module communicates with the multimeter through the HUB to control the multimeter to read the resistance value of the voltage test point.

[0027] In this embodiment, when the read resistance values ​​are all within the specified range, the processor module communicates with the control module through the HUB, controls the relay connected to the relay module in the multi-channel relay to be energized, and outputs a low level to the relay module to control the relay module to conduct; after the relay module is turned on, the mains power can be input to the power supply module, and the power supply module outputs multiple voltages (DC) to power the PCA.

[0028] In this embodiment, the processor module communicates with the multimeter and control module via a HUB, and then reads the voltage values ​​of each voltage test point where the resistance value has been tested. If the read voltage value is within a reasonable range, the read voltage value is uploaded to the data center of the external PC through the processor module; if the read voltage value exceeds the range, the control module closes the relay module and disconnects the mains power input of the power supply module. At this time, the power supply module has no voltage (DC) output to the PCA, and the PC connected to the processor module will issue a warning.

[0029] One end of the programmer is connected to the PCA, and the other end is connected to the HUB via USB. When the voltage values ​​at the voltage test points mentioned above are all within a reasonable range, the processor module programs the firmware to the PCA through the HUB and the programmer.

[0030] Therefore, in the testing process of this embodiment, the work that originally required multiple people to operate can be reduced to be completed by a single person, reducing the losses caused by various operational errors during manual testing and improving efficiency: the relevant test data that originally needed to be recorded manually can now be directly uploaded to the data center through the PC, avoiding the problem of data recording errors.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A full-automatic test system for a circuit board, characterized by comprising: include: Control module, multimeter, processor module, HUB, relay module, power supply module, programmer and PCA; The control module is equipped with multiple relays, and each of the multiple relays has a common ground and a common terminal connected to a multimeter. The control module connects to multiple voltage test points of the PCA via multiple relays, and the control module controls the connection and disconnection between the voltage test points and the multimeter via multiple relays. The control module is connected to the HUB via a serial-to-USB converter, and the HUB is coupled to the processor module. The processor module is connected to an external PC. One of the multiple relays in the control module is externally connected to a relay module. One end of the relay module is connected to the mains input terminal through a coupling main switch, and the other end is coupled to the power supply module. The power module is connected to the power supply terminal of the PCA, and the power module supplies power to the PCA by outputting multiple voltages; The multimeter is connected to the HUB via USB, and the processor module communicates with the multimeter through the HUB to control the multimeter to read the resistance value of the voltage test point. One end of the programmer is connected to the PCA, and the other end is connected to the HUB via USB. When the voltage values ​​at the voltage test points mentioned above are all within a reasonable range, the processor module programs the firmware to the PCA through the HUB and the programmer.

2. The full automatic test system of a circuit board according to claim 1, characterized by: The processor module communicates with the control module via a HUB, and the processor module tests the resistance value of the voltage test point of the PCA by controlling the switching of the multiple relays of the control module.

3. The fully automatic test system for a circuit board according to claim 1, wherein: The main switch remains open, and the mains power supplies the multimeter through the main switch.

4. The full automatic test system of a circuit board according to claim 1, characterized by: The processor module communicates with the control module via a HUB, controls the relay connected to the relay module in the multi-channel relay to engage, and outputs a low level to the relay module to control the relay module to conduct.

5. The fully automatic test system for a circuit board according to claim 4, wherein: When the relay module is turned on, the mains power is input to the power supply module through the main switch and the relay module in sequence.

6. The fully automatic test system for a circuit board according to claim 1, wherein: The processor module communicates with the multimeter and control module through the HUB to read the voltage values ​​of each voltage test point where the resistance value has been tested. If the read voltage value is within a reasonable range, the read voltage value is uploaded to the data center of the external PC through the processor module. If the read voltage value is outside the range, the control module closes the relay module, disconnects the mains input of the power supply module, and the power supply module no longer outputs voltage to the PCA.

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