CN-224231920-U - Test system for assembling circuit board

CN224231920UCN 224231920 UCN224231920 UCN 224231920UCN-224231920-U

Abstract

The utility model provides a test system for an assembled circuit board, which comprises an upper computer and an integrated tooling plate, wherein a current detection module, a voltage detection module, a first communication module, a second communication module and a control module are integrated on the integrated tooling plate, the control module is respectively and electrically connected with the first communication module, the current detection module, the voltage detection module and the second communication module, the first communication module is also electrically connected with the upper computer, the current detection module, the voltage detection module and the second communication module are also respectively and electrically connected with the assembled circuit board to be tested, and the upper computer is used for carrying out current detection, voltage detection and communication detection on the assembled circuit board to be tested through the integrated tooling plate.

Inventors

YAN FENG
LI GUOFENG
XU QINGLIN

Assignees

浙江正泰电器股份有限公司

Dates

Publication Date: 20260512
Application Date: 20250526

Claims (15)

1. The test system for the assembled circuit board is characterized by comprising an upper computer and an integrated tooling plate, wherein a current detection module, a voltage detection module, a first communication module, a second communication module and a control module are integrated on the integrated tooling plate; The control module is respectively and electrically connected with the first communication module, the current detection module, the voltage detection module and the second communication module, the first communication module is also electrically connected with the upper computer, and the current detection module, the voltage detection module and the second communication module are also respectively and electrically connected with an assembled circuit board to be tested; The upper computer is used for carrying out current detection, voltage detection and communication detection on the to-be-detected assembled circuit board through the integrated tooling plate.
2. The test system for assembling a circuit board according to claim 1, wherein the voltage detection module comprises a first voltage sampling unit and a second voltage sampling unit; The first voltage sampling unit and the second voltage sampling unit are respectively and electrically connected with the control module, and the first voltage sampling unit and the second voltage sampling unit are respectively and electrically connected with the to-be-tested assembled circuit board; The measurement precision of the first voltage sampling unit is lower than that of the second voltage sampling unit.
3. The system of claim 2, wherein the first voltage sampling unit comprises a first voltage dividing resistor string, an analog-to-digital conversion chip and a digital isolation chip; The first voltage dividing resistor string is electrically connected with the analog-digital conversion chip and is used for being electrically connected with the to-be-tested assembly circuit board, and the analog-digital conversion chip is also electrically connected with the control module through the digital isolation chip.
4. The system for testing an assembled circuit board according to claim 2, wherein the second voltage sampling unit comprises a second voltage dividing resistor string, a voltage metering chip and a voltage sampling digital isolation chip; the second voltage dividing resistor string is electrically connected with the voltage measuring chip and used for being electrically connected with the to-be-tested assembled circuit board, and the voltage measuring chip is also electrically connected with the control module through the voltage sampling digital isolation chip.
5. The test system for assembling a circuit board according to claim 1, wherein the current detection module comprises a current sampling unit; The current sampling unit is electrically connected with the control module and is used for being electrically connected with the to-be-tested assembled circuit board.
6. The system for testing an assembled circuit board according to claim 5, wherein the current sampling unit comprises a current sampling resistor, a current metering chip and a current sampling digital isolation chip; The current sampling resistor is electrically connected with the current metering chip and is used for being electrically connected with the to-be-tested assembled circuit board, and the current metering chip is also electrically connected with the control module through the current sampling digital isolation chip.
7. The test system for assembling a circuit board according to claim 1, wherein the current detection module comprises a current generation unit and a signal transmission unit; The current generation unit and the signal transmission unit are respectively and electrically connected with the control module, and the current generation unit and the signal transmission unit are respectively and electrically connected with the to-be-tested assembled circuit board; The control module is used for controlling the current generating unit to output test current to the to-be-tested assembled circuit board so that the to-be-tested assembled circuit board samples the test current, and a sampling detection result of the to-be-tested assembled circuit board is obtained according to a current sampling signal fed back by the signal transmission unit.
8. The test system for assembling a circuit board according to claim 7, wherein the current generating unit comprises a switch subunit, a third voltage dividing resistor string, and a current transformer; The third voltage dividing resistor string is used for being connected with a test power supply through the switch subunit and is electrically connected with the to-be-tested assembly circuit board through the current transformer, and the switch subunit is also electrically connected with the control module.
9. The test system for assembling a circuit board according to claim 1, wherein the second communication module comprises a remote control unit and a signal transmission unit; The remote control unit and the signal transmission unit are respectively and electrically connected with the control module, and the remote control unit and the signal transmission unit are respectively and electrically connected with the to-be-tested assembly circuit board; The control module is used for remotely controlling the to-be-tested assembled circuit board through the remote control unit, and obtaining a remote signaling detection result of the to-be-tested assembled circuit board according to the remote signaling state signal fed back by the signal transmission unit.
10. The system of claim 9, wherein the remote control unit comprises a transistor and a relay; The base electrode of the triode is electrically connected with the control module, the collector electrode of the triode is connected with the coil part of the relay in series, and the switch part of the relay is used for being electrically connected with the to-be-tested assembly circuit board.
11. The test system for assembling a circuit board according to claim 1, wherein the second communication module comprises a remote signaling unit and a signal transmission unit; The remote signaling unit and the signal transmission unit are respectively and electrically connected with the control module, and the remote signaling unit and the signal transmission unit are respectively and electrically connected with the to-be-tested assembly circuit board; The control module is used for sending a remote control instruction signal to the to-be-tested assembled circuit board through the signal transmission unit, and obtaining a remote control detection result of the to-be-tested assembled circuit board according to the remote signaling state of the remote signaling unit.
12. The system for testing an assembled circuit board of claim 11, wherein the remote signaling unit comprises an optocoupler; The light-emitting part of the optocoupler is used for being electrically connected with the to-be-tested assembled circuit board, and the light-sensing part of the optocoupler is electrically connected with the control module.
13. Test system for an assembled circuit board according to any of claims 9 to 12, characterized in that the signal transmission unit comprises a 485 communication subunit and/or a CAN communication subunit.
14. The test system for assembled circuit boards of any one of claims 1 to 12, further comprising a power module; The power supply module is electrically connected with the current detection module, the voltage detection module, the first communication module, the second communication module and the control module respectively; The power supply module is used for supplying power to the current detection module, the voltage detection module, the first communication module, the second communication module and the control module according to the accessed initial power supply.
15. The test system for assembled circuit boards of any one of claims 1 to 12, further comprising an interposer; the adapter plate is electrically connected with the integrated tooling plate through a flat cable, and the adapter plate is used for being electrically connected with the to-be-tested assembled circuit board through a probe; The current detection module, the voltage detection module, the first communication module, the second communication module and the control module in the integrated tooling plate are respectively used for being electrically connected with the to-be-tested assembled circuit board through the adapter plate.

Description

Test system for assembling circuit board Technical Field The utility model relates to the technical field of electrical testing, in particular to a testing system for assembling a circuit board. Background PCBA (Printed Circuit Board Assembly) refers to printed circuit board assemblies, which are understood to mean assembled circuit boards, including not only bare printed circuit boards (PCBs, printed Circuit Board), but also all electronic components mounted thereon, such as resistors, capacitors, integrated circuits, etc. These components are fixed to the printed circuit board by soldering to form a complete electronic module capable of performing a specific function. Testing an assembled circuit board is an important step in ensuring its quality, performance and reliability. Through comprehensive testing, whether the assembled circuit board meets design requirements or not can be verified, and potential problems can be found and corrected in time, so that the market competitiveness and the user satisfaction of the product are improved. The existing test schemes for assembled circuit boards mainly realize corresponding test items through a plurality of scattered circuit modules or devices respectively, which results in larger volume of the whole test system and higher space requirement and installation requirement. Disclosure of utility model Aiming at the defects existing in the prior art, the utility model provides a test system for assembling a circuit board. In one embodiment, the utility model provides a test system for assembling a circuit board, the test system for assembling the circuit board comprises an upper computer and an integrated tooling board, wherein a current detection module, a voltage detection module, a first communication module, a second communication module and a control module are integrated on the integrated tooling board; The control module is respectively and electrically connected with the first communication module, the current detection module, the voltage detection module and the second communication module, the first communication module is also electrically connected with the upper computer, and the current detection module, the voltage detection module and the second communication module are also respectively and electrically connected with the to-be-assembled circuit board; The upper computer is used for carrying out current detection, voltage detection and communication detection on the to-be-detected assembled circuit board through the integrated tooling plate. In one embodiment, the voltage detection module includes a first voltage sampling unit and a second voltage sampling unit; The first voltage sampling unit and the second voltage sampling unit are respectively and electrically connected with the control module, and the first voltage sampling unit and the second voltage sampling unit are respectively and electrically connected with the to-be-tested assembled circuit board; the measurement accuracy of the first voltage sampling unit is lower than that of the second voltage sampling unit. In one embodiment, the first voltage sampling unit comprises a first voltage dividing resistor string, an analog-to-digital conversion chip and a digital isolation chip; The first voltage dividing resistor string is electrically connected with the analog-digital conversion chip and is used for being electrically connected with the to-be-tested assembled circuit board, and the analog-digital conversion chip is also electrically connected with the control module through the digital isolation chip. In one embodiment, the second voltage sampling unit comprises a second voltage dividing resistor string, a voltage metering chip and a voltage sampling digital isolation chip; The second voltage dividing resistor string is electrically connected with the voltage measuring chip and is used for being electrically connected with the to-be-tested assembled circuit board, and the voltage measuring chip is also electrically connected with the control module through the voltage sampling digital isolation chip. In one embodiment, the current detection module includes a current sampling unit; The current sampling unit is electrically connected with the control module and is used for being electrically connected with the to-be-tested assembled circuit board. In one embodiment, the current sampling unit comprises a current sampling resistor, a current metering chip and a current sampling digital isolation chip; The current sampling resistor is electrically connected with the current metering chip and is used for being electrically connected with the to-be-tested assembled circuit board, and the current metering chip is also electrically connected with the control module through the current sampling digital isolation chip. In one embodiment, the current detection module includes a current generation unit and a signal transmission unit; The current generation unit and the signal transmission unit are