CN214041629U

CN214041629U - Voltage testing jig

Info

Publication number: CN214041629U
Application number: CN202023202090.2U
Authority: CN
Inventors: 张朝文
Original assignee: Shenzhen Hanhong Digital Technology Co ltd
Current assignee: Shenzhen Hanhong Digital Technology Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-08-24
Anticipated expiration: 2030-12-28

Abstract

The utility model discloses a voltage test fixture, which comprises a circuit board, a MCU, a direct current power supply, a display screen, functional keys, an alarm for reminding abnormal test, a DC detection module for connecting tested equipment, a voltage regulating power supply for supplying power to the tested equipment, a protective tube and a relay for ensuring safe power receiving of the tested equipment; the MCU is respectively connected with the direct current power supply, the DC detection module, the display screen, the functional keys and the alarm; the protective tube and the relay are sequentially connected between the voltage-regulating power supply and the tested equipment, and the relay is also connected with the MCU; the DC detection module is connected with the tested equipment. Therefore, the voltage testing jig is formed by integrally arranging the MCU, the direct-current power supply, the display screen, the function keys, the DC detection module, the protective tube and the relay on the circuit board, the jig can accurately detect the working conditions of the electronic equipment under different voltages, and is high in detection precision and high in efficiency.

Description

Voltage testing jig

Technical Field

The utility model relates to a voltage detection field technique especially indicates a voltage test fixture.

Background

A series of voltage withstanding tests are required to be carried out on products in the development process of electronic and electrical products so as to ensure the stability of continuous work of the products after shipment. The withstand voltage test is to apply a certain alternating-current high voltage by using a power frequency test transformer, and the withstand voltage test is continued for a certain time under the same voltage, such as several seconds, dozens of seconds or one minute, and the withstand voltage test is continuously supplied with power by using 120V voltage; if the insulation does not break down or the leakage current does not exceed a certain value, it is acceptable. However, the existing pressure resistance test can not accurately control the test time, so that the detection result has errors, the test accuracy is poor, and the precision is not high; meanwhile, the operation is troublesome and the efficiency is low. Therefore, a test fixture should be designed for the withstand voltage test of the product to solve the above problems.

Disclosure of Invention

In view of this, the utility model discloses to the disappearance that prior art exists, its main objective provides a voltage test fixture, and it forms voltage test fixture through setting up MCU, DC power supply, display screen, function button, DC detection module, protective tube and relay integration on the circuit board, and this tool can the operating condition of accurate detection electronic equipment under different voltages, and it is high to detect the precision, efficient.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a voltage test fixture comprises a circuit board, an MCU (micro control unit) arranged on the circuit board, a direct current power supply for supplying power to the MCU, a display screen for displaying a test state, a function key for switching a test mode, an alarm for reminding test abnormity, a DC (direct current) detection module for connecting tested equipment, a voltage regulating power supply for supplying power to the tested equipment, and a protective tube and a relay for ensuring the safe power receiving of the tested equipment, wherein the direct current power supply is used for supplying power to the MCU; the MCU is respectively connected with the direct current power supply, the DC detection module, the display screen, the functional keys and the alarm; the protective tube and the relay are sequentially connected between the voltage-regulating power supply and the tested equipment, and the relay is also connected with the MCU; the DC detection module is connected with the tested equipment.

As a preferred embodiment: the rear end of the circuit board is provided with a plurality of protective tubes in parallel, the front sides of the plurality of protective tubes are provided with a plurality of relays, and each relay is correspondingly connected with two protective tubes; two display screens are respectively arranged on two sides of the circuit board, and the four display screens are positioned on the front side of the relay; the function keys and the alarm are positioned between the display screens at the two sides.

As a preferred embodiment: an LPD is connected between the direct current power supply and the MCU.

As a preferred embodiment: and the MCU is provided with an upgrading interface for upgrading the test program.

As a preferred embodiment: and each display screen is correspondingly provided with a display driving module, and the display driving module is connected between the MCU and the display screen.

As a preferred embodiment: the direct current power supply is DC 12V.

As a preferred embodiment: the circuit board is provided with ten protective tubes side by side, two adjacent protective tubes form a group, each group of protective tubes is divided into a zero line protective tube and a live wire protective tube, and each relay is correspondingly connected with the zero line protective tube and the live wire protective tube in one group respectively.

As a preferred embodiment: the DC detection module is arranged on one side of the circuit board and is provided with a direct-current power supply interface used for being connected with the tested equipment.

As a preferred embodiment: the rear end of the circuit board is provided with a plurality of power pole pieces used for being connected with a voltage-regulating power supply, and the plurality of power pole pieces are positioned beside the fuse tube.

Compared with the prior art, the utility model has obvious advantages and beneficial effects, particularly, can know from above-mentioned technical scheme, through setting up MCU, DC power supply, display screen, function button, siren, DC detection module, protective tube and relay integration on the circuit board and forming the voltage test fixture to the electronic product, this voltage test fixture can test the operating condition of electronic product under different voltages, because can the test time of accurate control electronic product under each voltage, the voltage change in the test time can be accurate record, so the test accuracy is higher; meanwhile, different modes can be switched by adopting keys for testing, the testing function is more comprehensive, the operation is rapid and convenient, and the efficiency is high.

To more clearly illustrate the structural features and effects of the present invention, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a schematic diagram of a testing fixture according to the present invention;

FIG. 2 is a perspective view of a first viewing angle of a main body of the testing fixture of the present invention;

FIG. 3 is a perspective view of the main body of the testing fixture with a second viewing angle;

fig. 4 is a perspective view of the main body of the testing fixture with a third viewing angle.

The attached drawings indicate the following:

10. circuit board 11 and power pole piece

20. MCU 21, upgrade interface

30. Direct current power supply 40 and display screen

41. Display driving module 50 and function key

60. Alarm 70 and DC detection module

71. DC power supply interface 80 and voltage-regulating power supply

90. Protective tube 100 and relay

110. LPD 120 and device under test

Detailed Description

The utility model discloses as shown in fig. 1 to fig. 4, a voltage test fixture, including circuit board 10, set up MCU 20 on circuit board 10, a DC power supply 30 for giving MCU 20 power supply, show test status's display screen 40, a function button 50 for switching test mode, an siren 60 for reminding test anomaly, a DC detection module 70 for connecting by test equipment 120, a protective tube 90 and relay 100 for giving the voltage regulating power supply 80 of being supplied with power by test equipment 120 and being used for guaranteeing to be received by test equipment 120 safety, wherein:

the MCU 20 is used for centralized processing of voltage information, time control, display control, etc., and is connected to the DC power supply 30, the DC detection module 70, the display 40, the function keys 50, and the alarm 60, respectively; the protective tube 90 and the relay 100 are sequentially connected between the voltage regulating power supply 80 and the tested device 120, and the relay 100 is also connected with the MCU 20; the DC detection module 70 is connected to the device under test 120; the DC power supply 30 is DC 12V.

The rear end of the circuit board 10 is provided with a plurality of protective tubes 90 side by side, a plurality of relays 100 are arranged on the front sides of the plurality of protective tubes 90, and each relay 100 is correspondingly connected with two protective tubes 90; two display screens 40 are respectively arranged on two sides of the circuit board 10, and the four display screens 40 are positioned on the front side of the relay 100; the function keys 50 and the alarm 60 are located between the display screens 40 on both sides. Ten protective tubes 90 are arranged on the circuit board 10 side by side, two adjacent protective tubes 90 form a group, each group of protective tubes 90 is divided into a zero line protective tube and a live line protective tube, and each relay 100 is correspondingly connected with the zero line protective tube and the live line protective tube in the group respectively. LPD 110 is connected between dc power supply 30 and MCU 20. An upgrade interface 21 for upgrading the test program is provided on the MCU 20. And each display screen 40 is correspondingly provided with a display driving module 41, and the display driving module 41 is connected between the MCU 20 and the display screen 40. The DC detection module 70 is disposed on one side of the circuit board 10, and has a DC power interface 71 for connecting to the device under test 120, and the DC power interface 71 is used for transmitting voltage information of the device under test 120 to the MCU 20. In addition, a plurality of power pole pieces 11 for connecting the voltage-regulating power supply 80 are disposed at the rear end of the circuit board 10, and the plurality of power pole pieces 11 are located beside the fuse 90.

The test method and the principle of the test fixture are as follows: after the test fixture is connected with the direct-current power supply, the voltage-regulating power supply is connected to the tested equipment, and the tested equipment is connected with the MCU through the direct-current power supply interface. Then, adjusting a test mode and test time through the function keys, for example, setting the power supply voltage of the voltage-regulating power supply to be 120V and setting the test time to be six seconds; and then, starting a test, visually observing the voltage change condition of the tested equipment within six seconds through the display screen, and if the voltage change condition exceeds a preset voltage standard range, sounding and reminding by the alarm.

The utility model is mainly designed in that a voltage testing jig for electronic products is formed by integrally arranging the MCU, the direct current power supply, the display screen, the function keys, the alarm, the DC detection module, the protective tube and the relay on the circuit board, the voltage testing jig can test the working condition of the electronic products under different voltages, and the testing precision is higher because the testing time of the electronic products under each voltage can be accurately controlled and the voltage change in the testing time can be accurately recorded; meanwhile, different modes can be switched by adopting keys for testing, the testing function is more comprehensive, the operation is rapid and convenient, and the efficiency is high.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a voltage test fixture which characterized in that: the device comprises a circuit board, an MCU (microprogrammed control Unit) arranged on the circuit board, a direct current power supply for supplying power to the MCU, a display screen for displaying a test state, a functional key for switching a test mode, an alarm for reminding test abnormity, a DC (direct current) detection module for connecting tested equipment, a voltage regulating power supply for supplying power to the tested equipment, a protective tube and a relay for ensuring the safe power receiving of the tested equipment, wherein the display screen is used for displaying the test state; the MCU is respectively connected with the direct current power supply, the DC detection module, the display screen, the functional keys and the alarm; the protective tube and the relay are sequentially connected between the voltage-regulating power supply and the tested equipment, and the relay is also connected with the MCU; the DC detection module is connected with the tested equipment.

2. The voltage testing fixture of claim 1, wherein: the rear end of the circuit board is provided with a plurality of protective tubes in parallel, the front sides of the plurality of protective tubes are provided with a plurality of relays, and each relay is correspondingly connected with two protective tubes; two display screens are respectively arranged on two sides of the circuit board, and the four display screens are positioned on the front side of the relay; the function keys and the alarm are positioned between the display screens at the two sides.

3. The voltage testing fixture of claim 1, wherein: an LPD is connected between the direct current power supply and the MCU.

4. The voltage testing fixture of claim 1, wherein: and the MCU is provided with an upgrading interface for upgrading the test program.

5. The voltage testing fixture of claim 2, wherein: the display screen is correspondingly provided with a display driving module, and the display driving module is connected between the MCU and the display screen.

6. The voltage testing fixture of claim 1, wherein: the direct current power supply is DC 12V.

7. The voltage testing fixture of claim 2, wherein: the circuit board is provided with ten protective tubes side by side, two adjacent protective tubes form a group, each group of protective tubes is divided into a zero line protective tube and a live wire protective tube, and each relay is correspondingly connected with the zero line protective tube and the live wire protective tube in one group respectively.

8. The voltage testing fixture of claim 1, wherein: the DC detection module is arranged on one side of the circuit board and is provided with a direct-current power supply interface used for being connected with the tested equipment.

9. The voltage testing fixture of claim 2, wherein: the rear end of the circuit board is provided with a plurality of power pole pieces used for being connected with a voltage-regulating power supply, and the plurality of power pole pieces are positioned beside the fuse tube.