CN213091818U

CN213091818U - PCBA function automatic test system

Info

Publication number: CN213091818U
Application number: CN202021915587.6U
Authority: CN
Inventors: 杨乐宝
Original assignee: Shenzhen Furida Technology Co ltd
Current assignee: Shenzhen Furida Technology Co ltd
Priority date: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-04-30
Anticipated expiration: 2030-09-04

Abstract

For overcoming the not enough that the technique exists, the utility model provides an automatic test system of PCBA function, it is including the image acquisition circuit that is used for gathering integrated circuit image and printing characters on the PCBA board, carry out digital operation and confirm test signal's image processing/identification circuit to the image of integrated circuit image and printing characters, still include the multichannel test circuit who tests to the PCBA board of difference, image acquisition circuit, image processing/identification circuit electric connection, image processing/identification circuit still with select switch electric connection, select switch and multichannel test circuit electric connection and control switch on all the way in the multichannel test circuit. The utility model discloses a can accomplish the quick test to the PCBA board of different grade type in same test system or device, so both can raise the efficiency also can reduce cost.

Description

PCBA function automatic test system

Technical Field

The utility model relates to an automatic test system of PCBA function.

Background

The PCBA function automatic detection equipment disclosed in Chinese utility model patent CN201720801606.4 comprises an upper computer, a system control panel, a relay board, a programmable stabilized voltage power supply, a leakage current meter, a test frame and an action driving unit; the automation of various tests of the PCBA is realized through the upper computer, the system control board, the programmable stabilized voltage power supply, the leakage current meter, the relay board, the action driving unit and the test frame, and in fact, the tests of the PCBA by the prior art like the above are basically only suitable for the tests of one or a series of single PCBA boards with large correlation, however, in practical operation, many occasions need to finish the rapid tests of PCBA boards of different types in the same test system or device. This can both improve efficiency and reduce cost.

Disclosure of Invention

In order to overcome the defects existing in the prior art, the utility model provides an automatic PCBA function test system. The utility model provides a technical scheme that its technical problem adopted is: the utility model discloses an image acquisition circuit, the image processing/recognition circuit that is used for gathering integrated circuit image and printing characters on the PCBA board, carries out digital operation and confirms test signal to the image of integrated circuit image and printing characters, still include the multichannel test circuit who tests the PCBA board of difference, image acquisition circuit, image processing/recognition circuit electric connection, image processing/recognition circuit still with select switch electric connection, select switch and multichannel test circuit electric connection and control switch on all the way in the multichannel test circuit.

The image acquisition circuit adopts a camera in a physical structure, the image processing/identifying circuit adopts a control chip circuit of an SPCA563B model, and the selection switch adopts a singlechip control circuit or a multi-path relay circuit.

The image processing/identifying circuit, the selection switch and the testing circuit are fixed on a circuit board, a plurality of wire holes are also formed in the upper portion of the circuit board, a power supply module, a main circuit box and a testing circuit module are arranged on the lower portion of the circuit board, and the testing circuit module is physically and electrically connected with different wire holes; the edge of the circuit board is provided with a limiting plate, and the top of the circuit board is fixed with the camera through a support.

The limiting plate is fixed on the upper portion in a sliding mode and used for adjusting and fixing the pcba plate.

The fixed height of the camera is higher than that of the pcba board and integrated circuit elements on the pcba board, and the camera is a camera with an exposure lamp.

The utility model has the advantages that after the PCBA board to be tested is fixed in the implementation, the image acquisition circuit acquires the image and the printing character information of the integrated circuit on the PCBA board and converts the image and the printing character information into the image analog information to complete the conversion from the analog signal to the digital signal, then the image processing/identification circuit carries out digital operation on the image of the integrated circuit and the printing character and determines the test signal, and can judge the specific model of the chip on the PCBA board, then the information is used for determining which type of PCBA board the PCBA board is, then the test circuit starting signal corresponding to the PCBA board is determined according to the acquired PCBA board type, then the image processing/identification circuit sends the test circuit starting signal to the selection switch circuit, the selection switch selects the corresponding test circuit to be switched on, and then the test circuit correspondingly switched on completes the PCBA board, so in whole process the utility model discloses can accomplish the discernment to the PCBA board automatically then accomplish the test to the PCBA board according to the result of discernment. The utility model discloses a can accomplish the quick test to the PCBA board of different grade type in same test system or device, so both can raise the efficiency also can reduce cost.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a circuit component connection block diagram of the present invention;

fig. 2 is a schematic diagram of the physical structure of an embodiment of the present invention;

FIG. 3 is a schematic diagram of an embodiment of the present invention in operation;

Detailed Description

As shown in fig. 1 the utility model discloses an embodiment, including the image acquisition circuit that is used for gathering integrated circuit image and printing characters on the PCBA board, carry out digital operation and confirm test signal's image processing/identification circuit to the image of integrated circuit image and printing characters, still include the multichannel test circuit who tests the PCBA board of difference, image acquisition circuit, image processing/identification circuit electric connection, image processing/identification circuit still with select switch electric connection, select switch and multichannel test circuit electric connection and control switch on all the way in the multichannel test circuit.

In the specific implementation, firstly, after the PCBA board to be tested is fixed, the image acquisition circuit acquires the image and the printed text information of the integrated circuit on the PCBA board and converts the image and the printed text information into image analog information, then the conversion from the analog signal to the digital signal is completed in the circuit or the image processing/identifying circuit, then the digital operation is carried out on the image and the printed text image of the integrated circuit in the image processing/identifying circuit and the test signal is determined, in the process, the image processing/identifying circuit carries out the preset time sequence operation on the digital signal so as to identify the total number of integrated circuit chips on one PCBA board and the proportion of each integrated circuit chip to the total image amplitude, the text information corresponding to the text information on each integrated circuit chip further identifies the keyword corresponding to the text information and judges the specific model of the chip, then confirm that this PCBA board specifically is the PCBA board of which type jointly through foretell information, then confirm the test circuit start signal who corresponds rather than according to the PCBA board type of acquireing, then image processing/identification circuit sends test circuit start signal (the signal of taking the mark) to the selector switch circuit, and this signal is switched on by the test circuit that the selector switch selection corresponds behind the arrival selector switch, and then the test to the PCBA board is accomplished to the test circuit that corresponding switched on, so in whole process the utility model discloses can accomplish the discernment to the PCBA board automatically then accomplish the test to the PCBA board according to the result of discernment. The image acquisition circuit adopts a camera in a physical structure, the image processing/identifying circuit adopts a control chip circuit of an SPCA563B model, and the selection switch adopts a singlechip control circuit or a multi-path relay circuit; in the implementation, firstly, after the PCBA board to be tested is fixed, the camera collects the image and the printed text information of the integrated circuit on the PCBA board and converts the image and the printed text information into image analog information, then the conversion from the analog signal to the digital signal is completed in the circuit or in the control chip circuit of the SPCA563B, then the digital operation is performed on the image of the integrated circuit and the image of the printed text in the control chip circuit of the SPCA563B and the test signal is determined, in the process, the control chip circuit of the SPCA563B performs the preset time sequence operation on the digital signal to identify how many integrated circuit chips are on one PCBA board and the proportion of each integrated circuit chip to the total image, the text information corresponding to the text image on each integrated circuit chip further identifies the keyword corresponding to the text information and determines the specific model of the chip, and then the specific type of the PCBA board is determined by the information, then confirm rather than the test circuit start signal who corresponds according to the PCBA board type of acquireing, then SPCA563B control chip circuit sends test circuit start signal (the signal of mark) to single chip microcomputer control circuit or adopt multi-way relay circuit, this signal reachs single chip microcomputer control circuit or adopts multi-way relay circuit back by single chip microcomputer control circuit or adopt multi-way relay circuit to select the test circuit who corresponds to switch on, then the test circuit of corresponding switching on accomplishes the test to the PCBA board, so in whole in-process the utility model discloses can accomplish the discernment to the PCBA board automatically then accomplish the test to the PCBA board according to the result of discernment.

As shown in fig. 2 and 3, the image processing/recognition circuit, the selection switch and the test circuit of the present invention are fixed on a circuit board 3, the upper portion of the circuit board 3 is further provided with a plurality of wire holes 7, the lower portion of the circuit board 3 is provided with a power module 5, a main circuit box 6 and a test circuit module 4, and the test circuit module 4 is physically and electrically connected with different wire holes 7; the edge of the circuit board 3 is provided with a limiting plate 8, the top of the circuit board 3 is fixed with the camera 2 through the bracket 1, and the limiting plate 8 can be fixed on the upper part of the circuit board 3 in a sliding manner and is used for adjusting and fixing the pcba board 9; the fixed height of the camera 2 is higher than the pcba board 9 and the integrated circuit element 91 on the pcba board 9, and the camera 2 is specifically a camera with an exposure lamp. In the implementation, firstly, after the PCBA board 9 to be tested is fixed by the limiting board 8, the camera 2 collects the image and the printed text information of the integrated circuit element 91 on the PCBA board 9 and converts the image and the printed text information into image analog information, then the conversion from the analog signal to the digital signal is completed in the circuit or in the control chip circuit of the SPCA563B, then the digital operation is performed on the integrated circuit image and the image of the printed text in the control chip circuit of the SPCA563B and the test signal is determined, in the process, specifically, the control chip circuit of the SPCA563B performs the preset time sequence operation on the digital signal to identify how many integrated circuit elements 91 are on one PCBA board 9, the proportion of each integrated circuit element 91 to the total image, the text information corresponding to the text information on each integrated circuit element 91 and further identify the keyword corresponding to the text information and determine the specific model of the chip, then, the specific type of the PCBA board 9 is determined through the information, then a test circuit starting signal corresponding to the type of the PCBA board 9 is determined according to the obtained type of the PCBA board 9, then the SPCA563B control chip circuit sends a test circuit starting signal (signal with a mark) to the single chip control circuit or the multi-relay circuit, the signal reaches the single chip control circuit or the multi-relay circuit and then the single chip control circuit or the multi-relay circuit selects the corresponding test circuit to conduct, then the corresponding conducted test circuit completes the test of the PCBA board, and specifically, the test circuits of different paths are independent, the different test circuits are respectively used for testing the PCBA board circuits of different types, the different test circuits are electrically connected with the universal plurality of wire holes 7, and the corresponding pins are fixed after the PCBA board is fixed, so its position at a plurality of line holes 7 is also fixed, and optionally can fix the equal physics of different test circuit at test circuit module 4, fix main image processing/identification circuit, selector switch at main circuit box 6, then it only need switch on partial corresponding line hole 7 when certain test circuit work all the way can to other test circuit are inoperative can not influence each other, so in whole process the utility model discloses can accomplish the discernment to the PCBA board automatically then accomplish the test to the PCBA board according to the result of discernment.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are illustrative and not exclusive in all respects. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.

Claims

1. The utility model provides a PCBA function automated test system which characterized by: the PCBA testing circuit comprises an image acquisition circuit for acquiring images and printed characters of an integrated circuit on the PCBA, an image processing/recognition circuit for performing digital operation on the images of the images and the printed characters of the integrated circuit and determining a testing signal, and a multi-path testing circuit for testing different PCBA boards, wherein the image acquisition circuit and the image processing/recognition circuit are electrically connected, the image processing/recognition circuit is also electrically connected with a selector switch, and the selector switch is electrically connected with the multi-path testing circuit and controls to conduct one path of the multi-path testing circuit.

2. The PCBA function automated test system as recited in claim 1, wherein: the image acquisition circuit adopts a camera in a physical structure, the image processing/identifying circuit adopts a control chip circuit of an SPCA563B model, and the selection switch adopts a singlechip control circuit or a multi-path relay circuit.

3. The PCBA function automated test system as recited in claim 1, wherein: the image processing/identifying circuit, the selection switch and the testing circuit are fixed on a circuit board, a plurality of wire holes are also formed in the upper portion of the circuit board, a power supply module, a main circuit box and a testing circuit module are arranged on the lower portion of the circuit board, and the testing circuit module is physically and electrically connected with different wire holes; the edge of the circuit board is provided with a limiting plate, and the top of the circuit board is fixed with the camera through a support.

4. A PCBA functional automation test system as claimed in claim 3, wherein: the limiting plate is fixed on the upper portion in a sliding mode and used for adjusting and fixing the pcba plate.

5. A PCBA functional automation test system as claimed in claim 3, wherein: the fixed height of the camera is higher than that of the pcba board and integrated circuit elements on the pcba board, and the camera is a camera with an exposure lamp.