CN214895662U

CN214895662U - PCBA mainboard multichannel voltage test system

Info

Publication number: CN214895662U
Application number: CN202121276045.3U
Authority: CN
Inventors: 章涛; 王凯
Original assignee: Shanghai Silicon Printing Technology Co ltd
Current assignee: Shanghai Silicon Printing Technology Co ltd
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2021-11-26
Anticipated expiration: 2031-06-08

Abstract

The utility model discloses a PCBA mainboard multichannel voltage test system, the on-line screen storage device comprises a base, the first mounting panel of top installation of base, and the top of first mounting panel has placed the PCB mainboard, the top fixedly connected with frame of base, and one side of frame install the installing frame, the bottom of installing frame is connected with the connecting rod, and the top of connecting rod installs the pressfitting handle, the bottom of connecting rod is connected with the second mounting panel, and the top of second mounting panel is connected with the connecting plate, the probe is installed to the bottom of connecting plate, and the top of connecting plate is connected with the connecting wire. The utility model discloses in, this voltage test system can carry out the simultaneous measurement to the multichannel voltage on the PCB mainboard to the voltage measurement scope supports 0-19.8V, provides simultaneously and exports PC end and LCD display screen dual mode, makes things convenient for test engineer's operation and judges whether PCB mainboard voltage is normal, and this voltage test system simultaneous test multichannel voltage simultaneously.

Description

PCBA mainboard multichannel voltage test system

Technical Field

The utility model relates to a PCB mainboard circuit test technical field especially relates to a PCBA mainboard multichannel voltage test system.

Background

The circuit board test system is a generic name of a system which can automatically complete excitation, measurement, data processing, display or output test results under the control of a computer, and the circuit board test is used for completing the performance test of a tested PCB and can be expanded into a diagnosis system according to the analysis of the test results and the diagnosis and positioning of faults.

It is when using that current PCB mainboard multichannel voltage test is generally all through using the universal meter to carry out point-to-point measurement to the PCB mainboard one by one, uses the universal meter to measure and has not only increased because the short circuit risk that the manual operation universal meter pen brought, and it can't test the multichannel voltage on the PCB mainboard simultaneously, and the availability factor is lower.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving current PCB mainboard multichannel voltage test its when using, generally all carry out point-to-point measurement to the PCB mainboard through using the universal meter, use the universal meter to measure and lead to efficiency of software testing to reduce, it can't test the multichannel voltage on the PVB mainboard simultaneously, the lower shortcoming of availability factor, and the PCBA mainboard multichannel voltage test system who provides.

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

the utility model provides a PCBA mainboard multichannel voltage test system, includes the base, the first mounting panel of top installation of base, and the PCB mainboard has been placed on the top of first mounting panel, the top fixedly connected with frame of base, and one side of frame install the installing frame, the bottom of installing frame is connected with the connecting rod, and the top of connecting rod installs the pressfitting handle, the bottom of connecting rod is connected with the second mounting panel, and the top of second mounting panel is connected with the connecting plate, the probe is installed to the bottom of connecting plate, and the top of connecting plate is connected with the connecting wire, survey test panel is installed to the one end of connecting wire, stop gear is installed on the top of second mounting panel.

As a further description of the above technical solution:

the probe is connected with the top end of the PCB main board relatively, and the second mounting plate is of a lifting structure through the connecting rod and the mounting frame.

As a further description of the above technical solution:

the connecting rod is vertical to the second mounting plate, and the second mounting plate is parallel to the first mounting plate.

As a further description of the above technical solution:

stop gear's inside is including the connecting pipe, and is threaded connection between the top of connecting pipe and second mounting panel, the inner wall both sides of connecting pipe are connected with the spout respectively, and the inside activity of spout has cup jointed the slider, one side of slider is connected with the carriage release lever, and the bottom of carriage release lever is connected with the limiting plate, the top of carriage release lever is connected with reset spring.

As a further description of the above technical solution:

the reset spring is fixedly connected with the top end of the inside of the connecting pipe, and the moving rod forms an elastic structure with the connecting pipe through the reset spring.

As a further description of the above technical solution:

the movable rod is T-shaped, and a sliding structure is formed between the movable rod and the sliding groove through the sliding block.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, this voltage test system can carry out the simultaneous measurement to the multichannel voltage on the PCB mainboard to the voltage measurement scope supports 0-19.8V, provides simultaneously and exports PC end and LCD display screen dual mode, makes things convenient for test engineer's operation and judges whether PCB mainboard voltage is normal, and this voltage test system simultaneous test multichannel voltage simultaneously.

2. The utility model discloses in, through the effect of pressfitting handle, can make the connecting rod drive the second mounting panel and remove, can make connecting pipe, carriage release lever and the limiting plate on the second mounting panel remove, be convenient for remove the limiting plate to the PCB mainboard on, be convenient for carry on spacingly to the PCB mainboard, prevent that it from appearing the skew when the test, influence the accuracy of the data of follow-up test.

Drawings

FIG. 1 is a schematic structural view of a PCBA motherboard multi-path voltage testing device of the present invention;

FIG. 2 is a schematic view of the internal structure of the middle connection pipe of the present invention;

FIG. 3 is a flow chart of the PCBA motherboard multi-path voltage testing system of the present invention;

FIG. 4 is the minimum circuit diagram of the multi-path voltage testing system for the PCBA motherboard of the present invention;

FIG. 5 is a circuit diagram of voltage measurement in the multi-path voltage testing system of the PCBA motherboard of the present invention;

FIG. 6 is a circuit diagram of the LCD display circuit in the multi-path voltage testing system of the PCBA motherboard of the present invention;

figure 7 is the utility model discloses in PCBA mainboard multichannel voltage test system DEBUG & USB circuit diagram.

Illustration of the drawings:

1. a base; 2. a first mounting plate; 3. a PCB main board; 4. a frame; 5. installing a frame; 6. a connecting rod; 7. pressing a handle; 8. a second mounting plate; 9. a connecting plate; 10. a probe; 11. a connecting wire; 12. a test board; 13. a limiting mechanism; 1301. a connecting pipe; 1302. a chute; 1303. a slider; 1304. a travel bar; 1305. a limiting plate; 1306. a return spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-7, a PCBA mainboard multichannel voltage test system, including base 1, first mounting panel 2 is installed on the top of base 1, and PCB mainboard 3 has been placed on the top of first mounting panel 2, the top fixedly connected with frame 4 of base 1, and a side of frame 4 installs installing frame 5, the bottom of installing frame 5 is connected with connecting rod 6, and the top of connecting rod 6 installs pressfitting handle 7, the bottom of connecting rod 6 is connected with second mounting panel 8, and the top of second mounting panel 8 is connected with connecting plate 9, probe 10 is installed to the bottom of connecting plate 9, and the top of connecting plate 9 is connected with connecting wire 11, test panel 12 is installed to the one end of connecting wire 11, stop gear 13 is installed on the top of second mounting panel 8, test panel 12 adopts STM32 series MCU as control system, for the core device of whole voltage test system, and ADC sampling interface, installation of voltage test system is provided, The system comprises an LCD display interface, a reset and start-up key, and a voltage gain circuit is added to the system, so that the measurement range is effectively improved.

Furthermore, the probe 10 is relatively connected with the top end of the PCB main board 3, the second mounting plate 8 forms a lifting structure with the mounting frame 5 through the connecting rod 6, a power supply circuit, a reset circuit and the like form a system compatible with a DC power supply and a USB power supply mode in the figure 4, when the DC power supply is adopted for supplying power, the power supply input range supports 5-18V, and meanwhile, the system is provided with a power switch B4.

Furthermore, the connecting rod 6 is perpendicular to the second mounting plate 8, the second mounting plate 8 is parallel to the

first mounting plate

2, 16 paths of voltages supported by the voltage testing system in fig. 5 are input simultaneously, 0-16 paths of voltages on the PCB main board 3 can be measured simultaneously by matching with the first mounting plate 2, TPx is a testing probe, and meanwhile, the voltage measuring circuit of the system samples the LM324 to be used as voltage gain, so that the testing range is improved by 0-19.6V from 0-VDD supported by the original MCU, 3.3V is increased, 30V can be supported maximally, the testing system has a 12Bit sampling rate, the sampling precision is 0.005, and the sampling speed of the ADC is about us/time.

Further, the inside of stop gear 13 is including connecting pipe 1301, and be threaded connection between the top of connecting pipe 1301 and second mounting panel 8, the inner wall both sides of connecting pipe 1301 are connected with spout 1302 respectively, and the inside activity of spout 1302 has cup jointed slider 1303, one side of slider 1303 is connected with the carriage release lever 1304, and the bottom of carriage release lever 1304 is connected with limiting plate 1305, the top of carriage release lever 1304 is connected with reset spring 1306, limiting plate 1305 is convenient for spacing PCB mainboard 3, slider 1303, spout 1302 and reset spring 1306 are convenient for carriage release lever 1304 to remove simultaneously, be convenient for second mounting panel 8 to remove, be threaded connection between connecting pipe 1301 and the second mounting panel 8, be convenient for install and dismantle connecting pipe 1301.

Further, be fixed connection between reset spring 1306 and the inside top of connecting pipe 1301, and the movable rod 1304 passes through to constitute elastic construction between reset spring 1306 and the connecting pipe 1301, in fig. 6 be that the measured voltage passes through test system ADC sampling calculation back, can pass through MCU's SPI interface with the result of testing and export on the LCD display screen, convenient audio-visual reading data.

Further, the moving rod 1304 is T-shaped, and the moving rod 1304 forms a sliding structure with the sliding groove 1302 through the slider 1303, in fig. 7, the test system supports USB power supply and data transmission in addition to DC power supply and LCD display of test results, and can directly output PCB test results, OK/NG, without an engineer reading data for judgment, in cooperation with GUI.

The working principle is as follows: when in use, the PCB mainboard 3 to be tested is placed in the corresponding first mounting plate 2 and is fixed by the pressing handle 7, the probes 10 correspond to the voltage test points of the PCB mainboard 3 to be tested one by one, the voltage test points of the PCB mainboard 3 to be tested do not need to be arranged in order, can be at any position, in principle, the probe 10 is only needed to be in one-to-one correspondence, the power supply switch of the test board 12 is turned on while the power supply is supplied to the PCB mainboard 3 to be tested, at the moment, the LCD can display the voltage on the PCB mainboard 3 to be tested, and through the action of the pressing handle 7, can make connecting rod 6 drive second mounting panel 8 and remove, can make connecting pipe 1301, carriage release lever 1304 and limiting plate 1305 on the second mounting panel 8 remove, be convenient for remove limiting plate 1305 to PCB mainboard 3 on, be convenient for carry on spacingly to PCB mainboard 3, prevent that it from when the test, appearing the skew, influence the accuracy of the data of follow-up test.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a PCBA mainboard multichannel voltage test system, includes base (1), its characterized in that: the PCB structure is characterized in that a first mounting plate (2) is installed on the top of a base (1), a PCB main board (3) is placed on the top of the first mounting plate (2), a top fixedly connected with frame (4) of the base (1), a mounting frame (5) is installed on one side of the frame (4), the bottom of the mounting frame (5) is connected with a connecting rod (6), a press-fit handle (7) is installed on the top of the connecting rod (6), the bottom of the connecting rod (6) is connected with a second mounting plate (8), the top of the second mounting plate (8) is connected with a connecting plate (9), a probe (10) is installed on the bottom of the connecting plate (9), the top of the connecting plate (9) is connected with a connecting wire (11), a test plate (12) is installed on one end of the connecting wire (11), and a limiting mechanism (13) is installed on the top of the second mounting plate (8).

2. A PCBA motherboard multi-path voltage test system as claimed in claim 1, wherein: be the relative connection between probe (10) and the top of PCB mainboard (3), constitute elevation structure between second mounting panel (8) through connecting rod (6) and installing frame (5).

3. A PCBA motherboard multi-path voltage test system as claimed in claim 1, wherein: the connecting rod (6) is vertical to the second mounting plate (8), and the second mounting plate (8) is parallel to the first mounting plate (2).

4. A PCBA motherboard multi-path voltage test system as claimed in claim 1, wherein: the inside of stop gear (13) is including connecting pipe (1301), and is threaded connection between the top of connecting pipe (1301) and second mounting panel (8), the inner wall both sides of connecting pipe (1301) are connected with spout (1302) respectively, and the inside activity of spout (1302) has cup jointed slider (1303), one side of slider (1303) is connected with carriage release lever (1304), and the bottom of carriage release lever (1304) is connected with limiting plate (1305), the top of carriage release lever (1304) is connected with reset spring (1306).

5. A PCBA mainboard multi-path voltage test system as recited in claim 4, wherein: the return spring (1306) is fixedly connected with the inner top end of the connecting pipe (1301), and the moving rod (1304) forms an elastic structure with the connecting pipe (1301) through the return spring (1306).

6. A PCBA mainboard multi-path voltage test system as recited in claim 4, wherein: the movable rod (1304) is T-shaped, and a sliding structure is formed between the movable rod (1304) and the sliding groove (1302) through the sliding block (1303).