A high-low voltage testing device

Abstract

The utility model relates to electronic equipment test technical field especially is a kind of high-low voltage testing device, it includes conversion device, USB interface, PLC controller, pressure insulation tester, electronic load instrument, switch mechanism and switch opening and closing mechanism;Conversion device is used to connect the power cord plug of measured product;USB interface is used to insert the USB interface of measured product;Switch mechanism includes switch module A, switch module B, switch module C and switch module D;Switch opening and closing mechanism is respectively used to control the closure or disconnection of switch module A, switch module B, switch module C and switch module D.The utility model integrates two kinds of functions of pressure insulation test and low-voltage low-current test, simplifies test procedure, improves test efficiency;Through PLC controller, the automation control of test procedure is realized, reduces manual intervention, improves the accuracy and stability of test, and it is convenient for operating personnel to judge the passability of measured product quickly.

Description

Technical Field

[0001] This utility model relates to the field of electronic equipment testing technology, and in particular to a high and low voltage testing device. Background Technology

[0002] In the field of electronic product safety performance testing, high-voltage and low-voltage testing are core components for ensuring the electrical safety and reliability of products. Traditional testing procedures typically require separate high-voltage insulation withstand voltage tests (e.g., AC 4kV / 2s) and low-voltage load tests (e.g., 4.7V / 1.5A output characteristic tests for USB ports). Existing technologies suffer from the following drawbacks: fragmented testing process: the withstand voltage tester and the electronic load tester operate independently, requiring manual switching between the tested product and different instruments, resulting in low testing efficiency and potential safety hazards due to misoperation. The testing process is cumbersome and inefficient. Therefore, developing a device capable of simultaneously performing both tests is of paramount importance. Summary of the Invention

[0003] This utility model addresses the problems of existing technologies by providing a high and low voltage testing device. It features a novel structure and ingenious design, integrating both withstand voltage insulation testing and low voltage / low current testing functions. This simplifies the testing process and improves testing efficiency. The PLC controller automates the testing process, reducing manual intervention and improving accuracy and stability. After testing, the results are displayed, allowing operators to quickly determine the pass / fail status of the tested product. In case of test failure, an audible and visual alarm signal is emitted to remind operators to promptly handle defective products. The device is compact, feature-rich, and easy to operate.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This utility model provides a high and low voltage testing device, which includes a conversion device, a USB interface, a PLC controller, a withstand voltage insulation tester, an electronic load instrument, a switching mechanism, and a switch opening and closing mechanism. The conversion device is used to connect the power cord plug of the product under test. The USB interface is used to insert the USB port of the product under test. The switching mechanism includes switch module A, switch module B, switch module C, and switch module D. Both ends of switch module A are connected to the withstand voltage insulation tester and the conversion device, respectively. Both ends of switch module B are connected to the withstand voltage insulation tester and the USB interface, respectively. One end of switch module C is connected to the conversion device, and the other end of switch module C is used to connect the live wire and the neutral wire. Both ends of switch module D are connected to the electronic load instrument and the USB interface, respectively. The USB interface is also connected to a low voltage testing component. The PLC controller is connected to the withstand voltage insulation tester, the electronic load instrument, and the switch opening and closing mechanism, respectively. The switch opening and closing mechanism is used to control the closing or opening of switch modules A, B, C, and D.

[0006] The switch opening and closing mechanism includes solenoid valve A, solenoid valve B, solenoid valve C, solenoid valve D, a first opening and closing drive, a second opening and closing drive, a third opening and closing drive, and a fourth opening and closing drive. Solenoid valve A is connected to the first opening and closing drive, and the first opening and closing drive is correspondingly arranged with the switch module A. Solenoid valve B is connected to the second opening and closing drive, and the second opening and closing drive is correspondingly arranged with the switch module B. Solenoid valve C is connected to the first opening and closing drive, and the third opening and closing drive is correspondingly arranged with the switch module C. Solenoid valve D is connected to the fourth opening and closing drive, and the fourth opening and closing drive is correspondingly arranged with the switch module D.

[0007] Preferably, the first, second, third, and fourth opening and closing drive components are all cylinders.

[0008] The switch module A includes a first switch body and a second switch body. The first switch body includes an S1A contact and an S1B contact, and the second switch body includes an S2A contact and an S2B contact. The first opening and closing drive simultaneously controls the closing and closing of the connection between the S1A contact and the S1B contact, and the closing and closing of the connection between the S2A contact and the S2B contact.

[0009] The switch module B includes a third switch body, a fourth switch body, a fifth switch body, and a sixth switch body. The third switch body includes an S3A contact and an S3B contact. The fourth switch body includes an S4A contact and an S4B contact. The fifth switch body includes an S5A contact and an S5B contact. The sixth switch body includes an S6A contact and an S6B contact. The second on / off drive simultaneously controls the closing and closing of the S3A contact and the S3B contact, the S4A contact and the S4B contact, the S5A contact and the S5B contact, and the S6A contact and the S6B contact.

[0010] The switch module C includes a seventh switch body and an eighth switch body. The seventh switch body includes an S7A contact and an S7B contact, and the eighth switch body includes an S8A contact and an S8B contact. The third opening and closing drive simultaneously controls the closing and closing of the connection between the S7A contact and the S7B contact, and the closing and closing of the connection between the S8A contact and the S8B contact.

[0011] The switch module D includes a ninth switch body, a tenth switch body, an eleventh switch body, and a twelfth switch body. The ninth switch body includes an S9A contact and an S9B contact. The tenth switch body includes an S10A contact and an S10B contact. The eleventh switch includes an S11A contact and an S11B contact. The twelfth switch includes an S12A contact and an S12B contact. The fourth on / off drive simultaneously controls the closing and closing of the S9A contact and the S9B contact, the S10A contact and the S10B contact, the S11A contact and the S11B contact, and the S12A contact and the S12B contact.

[0012] The PLC controller is equipped with COM1, COM2, COM3, COM4, ​​COM5 and COM6 terminals. COM1, COM2, COM3 and COM4 terminals are respectively connected to solenoid valve A, solenoid valve B, solenoid valve C and solenoid valve D. COM5 terminal is connected to the electronic load tester and COM6 terminal is connected to the withstand voltage insulation tester.

[0013] The PLC controller is equipped with a start button.

[0014] The PLC controller is equipped with an audible and visual alarm.

[0015] The beneficial effects of this utility model are:

[0016] This utility model features a novel structure and ingenious design, integrating two functions: withstand voltage insulation testing and low-voltage low-current testing. This simplifies the testing process and improves testing efficiency. The PLC controller automates the testing process, reducing manual intervention and enhancing accuracy and stability. After testing, the results are displayed, allowing operators to quickly determine the product's pass / fail status. In case of test failure, an audible and visual alarm signal is emitted to remind operators to promptly handle defective products. The design is compact, feature-rich, and easy to operate. Attached Figure Description

[0017] Figure 1 This is a circuit diagram of a high and low voltage testing device according to the present invention. Detailed Implementation

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention. The present invention will be described in detail below with reference to the accompanying drawings.

[0019] A high and low voltage testing device, such as Figure 1As shown, it includes a conversion device, a USB interface, a PLC controller, a withstand voltage insulation tester, an electronic load tester, a switching mechanism, and a switch opening and closing mechanism. The conversion device is used to connect the power cord plug of the product under test. The USB interface is used to insert the USB port of the product under test. The switching mechanism includes switch modules A, B, C, and D. Switch module A has two ends connected to the withstand voltage insulation tester and the conversion device, respectively. Switch module B has two ends connected to the withstand voltage insulation tester and the USB interface, respectively. Switch module C has one end connected to the conversion device, and the other end of switch module C is used to connect the live wire and the neutral wire. Switch module D has two ends connected to the electronic load tester and the USB interface, respectively. The USB interface is also connected to a low-voltage testing component. The PLC controller is connected to the withstand voltage insulation tester and the electronic load tester. An insulation tester, an electronic load tester, and a switch opening / closing mechanism are connected. The switch opening / closing mechanism is used to control the closing or opening of switch modules A, B, C, and D, respectively. Each switch opening / closing mechanism includes solenoid valves A, B, C, and D, a first opening / closing drive, a second opening / closing drive, a third opening / closing drive, and a fourth opening / closing drive. Solenoid valve A is connected to the first opening / closing drive, which corresponds to switch module A. Solenoid valve B is connected to the second opening / closing drive, which corresponds to switch module B. Solenoid valve C is connected to the first opening / closing drive, which corresponds to switch module C. Solenoid valve D is connected to the fourth opening / closing drive, which corresponds to switch module D.

[0020] The PLC controller is equipped with a start button. The PLC controller is also equipped with an audible and visual alarm.

[0021] Specifically, in the operation of this embodiment, the power cord plug of the product under test is connected to the conversion device, the USB interface is inserted into the USB interface of the product under test, and the start button is triggered. The PLC controller triggers the operation of solenoid valves A and B of the solenoid valve mechanism, starts the operation of the first and second opening and closing drive components, controls the closing of switch module A and switch module B, and simultaneously starts the withstand voltage insulation tester to perform a 4KV / 2S test. If the test is completed and successful, an "OK" signal is sent to the PLC controller, the PLC controller triggers the opening of solenoid valves A and B, and the switch module A and switch module B are reset and opened. If the test fails, a "Fail" signal is sent to the PLC controller, and the PLC controller drives the audible and visual alarm to sound an alarm to remind technicians.

[0022] After the withstand voltage insulation test is completed, the PLC controller triggers solenoid valves C and D to operate, thereby activating the third and fourth opening and closing actuators, which in turn control the closing of switch modules C and D. Simultaneously, the PLC controller starts the electronic load tester, which displays the test conditions "U = 4.7V = 1.5A" and begins the test. After the test is completed, a signal is sent to the PLC controller to trigger solenoid valves C and D to de-energize and reset. If the technician observes that the voltage value exceeds the preset range, it is considered a defective product.

[0023] The embodiments of this application feature a novel structure and ingenious design, integrating both withstand voltage insulation testing and low-voltage low-current testing functions. This simplifies the testing process and improves testing efficiency. The PLC controller automates the testing process, reducing manual intervention and enhancing accuracy and stability. Test results are displayed upon completion, allowing operators to quickly determine the pass / fail status of the tested product. An audible and visual alarm signal is issued upon test failure, reminding operators to promptly address defective products. The system is compact, feature-rich, and easy to operate.

[0024] In this embodiment of the application, the first opening and closing drive, the second opening and closing drive, the third opening and closing drive and the fourth opening and closing drive are cylinder A, cylinder B, cylinder C and cylinder D, respectively.

[0025] In this embodiment of the application, the switch module A includes a first switch body and a second switch body. The first switch body includes an S1A contact and an S1B contact, and the second switch body includes an S2A contact and an S2B contact. The first opening and closing drive simultaneously controls the closing and closing of the S1A contact and the S1B contact.

[0026] The switch module B includes a third switch body, a fourth switch body, a fifth switch body, and a sixth switch body. The third switch body includes an S3A contact and an S3B contact. The fourth switch body includes an S4A contact and an S4B contact. The fifth switch body includes an S5A contact and an S5B contact. The sixth switch body includes an S6A contact and an S6B contact. The second on / off drive simultaneously controls the closing and closing of the S3A contact and the S3B contact, the S4A contact and the S4B contact, the S5A contact and the S5B contact, and the S6A contact and the S6B contact.

[0027] The switch module C includes a seventh switch body and an eighth switch body. The seventh switch body includes an S7A contact and an S7B contact, and the eighth switch body includes an S8A contact and an S8B contact. The third opening and closing drive simultaneously controls the closing and closing of the connection between the S7A contact and the S7B contact, and the closing and closing of the connection between the S8A contact and the S8B contact.

[0028] The switch module D includes a ninth switch body, a tenth switch body, an eleventh switch body, and a twelfth switch body. The ninth switch body includes an S9A contact and an S9B contact. The tenth switch body includes an S10A contact and an S10B contact. The eleventh switch includes an S11A contact and an S11B contact. The twelfth switch includes an S12A contact and an S12B contact. The fourth on / off drive simultaneously controls the closing and closing of the S9A contact and the S9B contact, the S10A contact and the S10B contact, the S11A contact and the S11B contact, and the S12A contact and the S12B contact.

[0029] In this embodiment of the application, the PLC controller is provided with COM1, COM2, COM3, COM4, ​​COM5 and COM6 terminals. The COM1, COM2, COM3 and COM4 terminals are respectively connected to the solenoid valve A, the solenoid valve B, the solenoid valve C and the solenoid valve D. The COM5 terminal is connected to the electronic load instrument and the COM6 terminal is connected to the withstand voltage insulation tester.

[0030] Specifically, the conversion device in this application embodiment is designed to connect the power cord plug of the product under test, ensuring a safe and effective connection between the power supply and the tester; USB interface: specifically designed for inserting into the USB interface of the product under test; PLC controller: as the core control unit, it communicates and controls the withstand voltage insulation tester, electronic load tester and multiple solenoid valves through the COM port.

[0031] The specific testing principle of this application embodiment is as follows: The power cord plug of the product under test is connected to the conversion device, and the USB interface is inserted into the USB interface of the product under test; the start button is triggered, and the PLC controller triggers solenoid valves A and B through COM1 and COM2 terminals, causing cylinders A and B to start working, thereby closing the corresponding contacts S1A to S6A and S1B to S6B; at the same time, the PLC controller triggers the DP9-B programmable switch through COM6 to start the withstand voltage insulation tester to perform a 4KV / 2S test; after the test is completed, the withstand voltage insulation tester sends an "OK" signal to the PLC controller, the PLC controller interface displays a green light, the PLC controller triggers solenoid valves A and B to open, and the contacts are reset; if the test fails, a "Fail" signal is sent, the PLC controller interface displays a red light, and an alarm sound is emitted through the audible and visual alarm for prompting;

[0032] After the withstand voltage insulation test is completed, the PLC controller triggers solenoid valves C and D through COM3 and COM4 terminals, causing cylinders C and D to start working, thereby closing the corresponding contacts S7A to S12A and S7B to S12B. At the same time, the PLC controller triggers the DP9-A programmable switch through COM5 terminal, starting the electronic load tester, and the display shows the test conditions "U=4.7V I=1.5A". After the test is completed, solenoid valves C and D are de-energized and reset. If the technician observes that the voltage value exceeds the range of 4.7V to 5.3V, it is considered a defective product.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A high and low voltage testing device, characterized in that: The system includes a conversion device, a USB interface, a PLC controller, a withstand voltage insulation tester, an electronic load tester, a switching mechanism, and a switch opening and closing mechanism. The conversion device is used to connect the power cord plug of the product under test. The USB interface is used to insert the USB port of the product under test. The switching mechanism includes switch modules A, B, C, and D. Switch module A is connected at both ends to the withstand voltage insulation tester and the conversion device, switch module B is connected at both ends to the withstand voltage insulation tester and the USB interface, switch module C is connected at one end to the conversion device, and the other end of switch module C is used to connect the live wire and the neutral wire. Switch module D is connected at both ends to the electronic load tester and the USB interface, and the USB interface is also connected to a low-voltage testing component. The PLC controller is connected to the withstand voltage insulation tester, the electronic load tester, and the switch opening and closing mechanism. The switch opening and closing mechanism is used to control the closing or opening of switch modules A, B, C, and D.

2. The high and low voltage testing device according to claim 1, characterized in that: The switch opening and closing mechanism includes solenoid valve A, solenoid valve B, solenoid valve C, solenoid valve D, a first opening and closing drive, a second opening and closing drive, a third opening and closing drive, and a fourth opening and closing drive. Solenoid valve A is connected to the first opening and closing drive, and the first opening and closing drive is correspondingly arranged with the switch module A. Solenoid valve B is connected to the second opening and closing drive, and the second opening and closing drive is correspondingly arranged with the switch module B. Solenoid valve C is connected to the first opening and closing drive, and the third opening and closing drive is correspondingly arranged with the switch module C. Solenoid valve D is connected to the fourth opening and closing drive, and the fourth opening and closing drive is correspondingly arranged with the switch module D.

3. The high and low voltage testing device according to claim 2, characterized in that: The first, second, third, and fourth opening and closing drive components are all cylinders.

4. The high and low voltage testing device according to claim 2, characterized in that: The switch module A includes a first switch body and a second switch body. The first switch body includes an S1A contact and an S1B contact, and the second switch body includes an S2A contact and an S2B contact. The first opening and closing drive simultaneously controls the closing and closing of the connection between the S1A contact and the S1B contact, and the closing and closing of the connection between the S2A contact and the S2B contact.

5. A high and low voltage testing device according to claim 2, characterized in that: The switch module B includes a third switch body, a fourth switch body, a fifth switch body, and a sixth switch body. The third switch body includes an S3A contact and an S3B contact. The fourth switch body includes an S4A contact and an S4B contact. The fifth switch body includes an S5A contact and an S5B contact. The sixth switch body includes an S6A contact and an S6B contact. The second on / off drive simultaneously controls the closing and closing of the S3A contact and the S3B contact, the S4A contact and the S4B contact, the S5A contact and the S5B contact, and the S6A contact and the S6B contact.

6. The high and low voltage testing device according to claim 2, characterized in that: The switch module C includes a seventh switch body and an eighth switch body. The seventh switch body includes an S7A contact and an S7B contact, and the eighth switch body includes an S8A contact and an S8B contact. The third opening and closing drive simultaneously controls the closing and closing of the S7A contact and the S7B contact.

7. A high and low voltage testing device according to claim 2, characterized in that: The switch module D includes a ninth switch body, a tenth switch body, an eleventh switch body, and a twelfth switch body. The ninth switch body includes an S9A contact and an S9B contact. The tenth switch body includes an S10A contact and an S10B contact. The eleventh switch includes an S11A contact and an S11B contact. The twelfth switch includes an S12A contact and an S12B contact. The fourth on / off drive simultaneously controls the closing and closing of the S9A contact and the S9B contact, the S10A contact and the S10B contact, the S11A contact and the S11B contact, and the S12A contact and the S12B contact.

8. A high and low voltage testing device according to claim 2, characterized in that: The PLC controller is equipped with COM1, COM2, COM3, COM4, ​​COM5 and COM6 terminals. COM1, COM2, COM3 and COM4 terminals are respectively connected to solenoid valve A, solenoid valve B, solenoid valve C and solenoid valve D. COM5 terminal is connected to the electronic load tester and COM6 terminal is connected to the withstand voltage insulation tester.

9. A high and low voltage testing device according to claim 1, characterized in that: The PLC controller is equipped with a start button.

10. A high and low voltage testing device according to claim 1, characterized in that: The PLC controller is equipped with an audible and visual alarm.

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