Optical coupling plate automatic tester

Abstract

The application relates to an automatic tester for an optical coupling board and belongs to the field of automatic control; the automatic tester comprises a case, a first control board assembly, a second control board assembly, a third control board assembly, a mother board assembly and an upper cover plate; the case is a hollow square box structure with an open upper end; the first control board assembly, the second control board assembly, the third control board assembly and the mother board assembly are sequentially arranged in the inner cavity of the case in the vertical direction from bottom to top; the upper cover plate horizontally covers the opening of the case; the mother board assembly is connected with the upper cover plate; a power switch, a direct-current stabilized power input interface and a digital multimeter test interface are arranged on the side wall of one side of the case; a 220V alternating-current power input end, a power module and an upper computer data line interface are arranged on the side wall of the opposite side of the case; the application realizes fully automatic testing of the optical coupling board, solves the problem of manual testing of the optical coupling board and has wide application occasions.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of automation control, and relates to an optical coupling board automatic tester. BACKGROUND

[0002] The optical coupling board is part of a comprehensive controller, mainly used for the timing signal output of a solid-state relay, and the signal is sent to the host board for analysis and calculation, which plays an important role in the working performance of the comprehensive controller. In the face of long-term manual testing method of the optical coupling board, multi-channel (hundreds of channels) impedance testing, recording and interpretation are carried out point by point under the condition of power-off, and then multi-channel impedance testing, recording and interpretation are carried out again point by point under the condition of power-on. The optical coupling board testing is carried out twice for multi-channel impedance testing and interpretation, and one multi-channel point-on operation is carried out. The power-on and testing points are up to thousands, the testing points are numerous and densely distributed, the operation is difficult, the testing efficiency is low, and the misjudgment degree and misoperation risk are high.

[0003] The existing optical coupling board adopts a manual testing method, which has the following disadvantages:

[0004] (1) The testing points are densely distributed, the operator's visual challenge is high, the operation is difficult, long-term repetitive work causes great mental stress;

[0005] (2) The power-on and testing points are numerous, and the distances between the points are close, so the points are easily connected incorrectly, which causes misoperation and other high-risk consequences;

[0006] (3) The optical coupling board is in an un-painted state, and four meters are often moved manually, which easily causes accidental contact with the soldering ends or soldering points of some components, and there is a short circuit risk;

[0007] (4) The manual testing of the optical coupling board takes a long time, the work efficiency is low, and the time cost and labor cost are high. SUMMARY

[0008] The technical problem solved by the application is to overcome the shortcomings of the prior art, propose an optical coupling board automatic tester, realize complete automation testing of the optical coupling board, solve the problem of manual testing of the optical coupling board consuming manpower and resources, and widely apply the optical coupling board automatic tester.

[0009] The technical solution of the application is:

[0010] The optical coupling board automatic tester comprises a case, a first control board assembly, a second control board assembly, a third control board assembly, a mother board assembly and an upper cover plate. The case is a hollow square box structure with an open upper end. The first control board assembly, the second control board assembly, the third control board assembly and the mother board assembly are sequentially arranged in the inner cavity of the case in the vertical direction from bottom to top. The upper cover plate horizontally covers the opening of the case. The mother board assembly is connected with the upper cover plate.

[0011] In the above-mentioned optical coupling board automatic tester, the optical coupling board automatic tester further comprises a power switch, a DC stabilized power supply input interface and a digital multimeter test interface; the power switch, the DC stabilized power supply input interface and the digital multimeter test interface are arranged on the side wall of the case.

[0012] In the above-mentioned optical coupling board automatic tester, the optical coupling board automatic tester further comprises a 220V AC power supply input end, a power module and a host computer data line interface; the 220V AC power supply input end, the power module and the host computer data line interface are arranged on the side wall of the case on the opposite side.

[0013] In the above-mentioned optical coupling board automatic tester, the first control board assembly, the second control board assembly and the third control board assembly adopt the same structure; all of them comprise a control board mother board, a power supply test port, a core control board, a relay board, a signal input port and a signal output port.

[0014] Among them, the control board mother board is a horizontally placed plate structure; the core control board is horizontally arranged at the center of the upper surface of the control board mother board; the signal input port is arranged on the core control board; the power supply test port and the signal output port are both arranged on the upper surface of the control board mother board, and the power supply test port and the signal output port are symmetrically arranged on the two sides of the signal input port; the relay board is distributed in a 2-group matrix; the two groups of relay boards are symmetrically arranged on the two sides of the core control board and are installed on the upper surface of the control board mother board.

[0015] In the above-mentioned optical coupling board automatic tester, each group of relay boards comprises 6 relay boards; each group of relay boards is distributed in 3 rows and 2 columns.

[0016] In the above-mentioned optical coupling board automatic tester, the relay board comprises a relay mother board, a relay board connector and 7 relays; among them, the relay mother board is a vertically placed plate structure; the relay mother board is installed on the upper surface of the control board mother board; the relay board connector is arranged at the bottom position of the side wall of the relay mother board; the 7 relays are arranged in a column on the middle part of the side wall of the relay mother board.

[0017] In the above-mentioned optical coupling board automatic tester, the mother board assembly comprises a printed mother board, a test product interface and 3 signal receiving ends; among them, the printed mother board is a horizontally placed plate structure; the test product interface is arranged in the middle part of the upper surface of the printed mother board; the 3 signal receiving ends are arranged in a column on one side of the test product interface.

[0018] In the above-mentioned optical coupling board automatic tester, the 220V AC power supply input end, the power switch, the power module and the three control board assemblies are connected by wires.

[0019] In the above-mentioned optical coupling board automatic tester, the host computer data line interface is in communication with the signal input port lead wire of the three control board assemblies respectively; the signal output port of the three control board assemblies is in one-to-one correspondence with the three signal receiving ends of the mother board assembly; and the power supply test port of the three control board assemblies is in communication with the DC stabilized power supply input interface and the digital multimeter test interface.

[0020] In the above-mentioned optical coupling board automatic tester, the optical coupling board automatic tester is developed based on STM32 embedded automatic control technology, and the to-be-tested optical coupling board is stably plugged with the mother board assembly; the host computer sends control signals to the STM32 control core of the lower computer in sequence through the data line according to the test program, the STM32 performs operation on the control signals according to the lower computer program, and then sends the operated signals to the corresponding relay, the on or off of different relays controls the on of the corresponding point of the to-be-tested optical coupling board and the DC stabilized power supply or the digital multimeter, so that the DC stabilized power supply is used to power on the to-be-tested optical coupling board point by point, and the digital multimeter is used to test the impedance of the to-be-tested optical coupling board point by point.

[0021] The beneficial effects of the present application compared with the prior art are:

[0022] (1) The present application is an automatic test, which liberates manual labor and reduces work intensity;

[0023] (2) The to-be-tested optical coupling board of the present application is fixedly connected with the tester, which is simple to operate and reduces the risk of misoperation;

[0024] (3) The present application does not need to increase other additional operations in the test process, which reduces the risk of short circuit;

[0025] (4) The present application has short test time, which improves work efficiency and productivity. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a whole schematic view of the optical coupling board automatic tester of the present application;

[0027] Figure 2 It is an exploded schematic view of the optical coupling board automatic tester of the present application;

[0028] Figure 3 It is a schematic view of the control board assembly of the present application;

[0029] Figure 4 It is a schematic view of the relay board of the present application;

[0030] Figure 5 It is a schematic view of the mother board assembly of the present application. DETAILED DESCRIPTION

[0031] The present application will be further described below in combination with examples.

[0032] The application provides an optical coupling board automatic tester, solves the problem of manual testing of optical coupling boards and has wide application occasions.

[0033] The optical coupling board automatic tester specifically comprises a case 2, a first control board assembly 5, a second control board assembly 6, a third control board assembly 7, a mother board assembly 8 and an upper cover plate 9. Figure 1 、 Figure 2 The case 2 is a hollow square box structure with an open upper end. The first control board assembly 5, the second control board assembly 6, the third control board assembly 7 and the mother board assembly 8 are sequentially arranged in the inner cavity of the case 2 in the vertical direction from bottom to top. The upper cover plate 9 horizontally covers the opening of the case 2. The optical coupling board automatic tester further comprises a power switch 1, a DC stabilized power supply input interface 3 and a digital multimeter test interface 4. The power switch 1, the DC stabilized power supply input interface 3 and the digital multimeter test interface 4 are arranged on one side wall of the case 2. The optical coupling board automatic tester further comprises a 220V AC power supply input end 10, a power module 11 and an upper computer data line interface 12. The 220V AC power supply input end 10, the power module 11 and the upper computer data line interface 12 are arranged on the opposite side wall of the case 2.

[0034] As shown in Figure 3 The first control board assembly 5, the second control board assembly 6 and the third control board assembly 7 have the same structure and each comprises a control board mother board 16, a power supply test port 17, a core control board 18, a relay board 19, a signal input port 20 and a signal output port 21.

[0035] The control board mother board 16 is a plate-shaped structure horizontally arranged. The core control board 18 is horizontally arranged at the center of the upper surface of the control board mother board 16. The power supply test port 17 and the signal output port 21 are symmetrically arranged on the two sides of the signal input port 20. The relay board 19 is arranged in a 2-group matrix. Each group of relay boards 19 comprises six relay boards 19 and is arranged in a 3-row×2-column matrix.

[0036] As shown in Figure 4 The relay board 19 comprises a relay mother board 13, a relay board connector 14 and seven relays 15. The relay mother board 13 is a plate-shaped structure vertically arranged. The relay board connector 14 is arranged at the bottom of the side wall of the relay mother board 13. The seven relays 15 are horizontally arranged in one column at the middle of the side wall of the relay mother board 13.

[0037] As Figure 5 As shown in the figure, the mother board assembly 8 includes a printed mother board 22, a test product interface 23 and three signal receiving ends 24; wherein the printed mother board 22 is a horizontally placed plate structure; the test product interface 23 is arranged at the middle of the upper surface of the printed mother board 22; and the three signal receiving ends 24 are arranged in a column on one side of the test product interface 23.

[0038] 220V AC power input end 10 and power switch 1, power switch 1 and power module 11, power module 11 and three control board assemblies are connected by wires. The upper computer data line interface 12 is in wire communication with the signal input port 20 of the three control board assemblies; the signal output port 21 of the three control board assemblies is in one-to-one correspondence with the three signal receiving ends 24 of the mother board assembly 8; and the power supply test port 17 of the three control board assemblies is in communication with the DC stabilized power supply input interface 3 and the digital multimeter test interface 4. The data line interface is connected with the upper computer by a data line.

[0039] The optical coupling board automatic tester is developed based on STM32 embedded automatic control technology, and the to-be-tested optical coupling board is stably plugged with the mother board assembly 8; the upper computer sends control signals to the STM32 control core of the lower computer in sequence according to the test program through a data line, the STM32 performs operation on the control signals according to the lower computer program, and then sends the operated signals to corresponding relays, the connection or disconnection of different relays controls the connection of the corresponding points of the to-be-tested optical coupling board and the DC stabilized power supply or the digital multimeter, so that the DC stabilized power supply is connected to the to-be-tested optical coupling board for power supply, and the digital multimeter is connected to the to-be-tested optical coupling board for impedance test.

[0040] The present application aims to provide a tester which can realize automatic test and interpretation of optical coupling board parameters. The optical coupling board automatic tester is developed based on STM32 embedded automatic control technology, and the to-be-tested optical coupling board is stably plugged with the tester mother board connector, the upper computer sends control signals to the STM32 control core of the lower computer in sequence according to the test program through a data line, the STM32 performs operation on the control signals according to the lower computer program, and then sends the operated signals to corresponding relays, the connection or disconnection of different relays controls the connection of the corresponding points of the to-be-tested optical coupling board and the DC stabilized power supply or the digital multimeter, so that the DC stabilized power supply is connected to the to-be-tested optical coupling board for power supply, and the digital multimeter is connected to the to-be-tested optical coupling board for impedance test. The digital multimeter returns the tested data to the upper computer for analysis and discrimination, and outputs the test conclusion, so as to realize complete automatic test of the optical coupling board.

[0041] Compared with the prior art, the present application has the following advantages:

[0042] (1) Automation test, liberate manual labor, reduce work intensity;

[0043] (2) The to-be-tested optical coupling plate is fixedly connected with the tester, operation is simple, and the risk of misoperation is reduced;

[0044] (3) The test process does not need to increase other additional operations, and the short circuit risk is reduced;

[0045] (4) The test time is short, work efficiency and productivity are improved.

[0046] Although the present application has been disclosed with the above preferred embodiments, it is not intended to limit the present application, and any person skilled in the art can make possible changes and modifications to the technical solutions of the present application by using the disclosed methods and technical contents without departing from the spirit and scope of the present application. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, which does not deviate from the technical solutions of the present application, belongs to the protection scope of the technical solutions of the present application.

Claims

1. An optical coupling board automated tester, characterized by: It includes a case (2), a first control board assembly (5), a second control board assembly (6), a third control board assembly (7), a motherboard assembly (8) and an upper cover plate (9); wherein the case (2) is a hollow square box structure with an open upper end; the first control board assembly (5), the second control board assembly (6), the third control board assembly (7) and the motherboard assembly (8) are sequentially arranged in the inner cavity of the case (2) in the vertical direction from bottom to top; the upper cover plate (9) horizontally covers the opening of the case (2); the motherboard assembly (8) is connected with the upper cover plate (9); The optocoupler board automatic test instrument further comprises a power switch (1), a DC stabilized power supply input interface (3) and a digital multimeter test interface (4); the power switch (1), the DC stabilized power supply input interface (3) and the digital multimeter test interface (4) are arranged on one side wall of the case (2); The optocoupler board automatic test instrument further comprises a 220V AC power supply input end (10), a power module (11) and a host computer data line interface (12); the 220V AC power supply input end (10), the power module (11) and the host computer data line interface (12) are arranged on the opposite side wall of the case (2); The first control board assembly (5), the second control board assembly (6) and the third control board assembly (7) adopt the same structure; all comprise a control board motherboard (16), a power supply test port (17), a core control board (18), a relay board (19), a signal input port (20) and a signal output port (21); The control board motherboard (16) is a horizontally placed plate structure; the core control board (18) is horizontally arranged at the center of the upper surface of the control board motherboard (16); the signal input port (20) is arranged on the core control board (18); the power supply test port (17) and the signal output port (21) are both arranged on the upper surface of the control board motherboard (16), and the power supply test port (17) and the signal output port (21) are symmetrically arranged on the two sides of the signal input port (20); the relay board (19) is distributed in a 2-group matrix; the two groups of relay boards (19) are symmetrically arranged on the two sides of the core control board (18) and are installed on the upper surface of the control board motherboard (16).

2. The optical coupling plate automatic tester according to claim 1, wherein: Each group of relay boards (19) comprises six relay boards (19); each group of relay boards (19) is distributed in 3 rows and 2 columns.

3. The optical coupling plate automatic tester according to claim 2, wherein: The relay board (19) comprises a relay motherboard (13), a relay board connector (14) and seven relays (15); wherein the relay motherboard (13) is a vertically placed plate structure; the relay motherboard (13) is installed on the upper surface of the control board motherboard (16); the relay board connector (14) is arranged at the bottom position of the side wall of the relay motherboard (13); the seven relays (15) are horizontally arranged in one column and are arranged in the middle of the side wall of the relay motherboard (13).

4. The optical coupling plate automatic tester according to claim 3, wherein: The motherboard assembly (8) comprises a printed motherboard (22), a test product interface (23) and three signal receiving ends (24); wherein the printed motherboard (22) is a horizontally placed plate structure; the test product interface (23) is arranged at the middle of the upper surface of the printed motherboard (22); and the three signal receiving ends (24) are arranged in one column on one side of the test product interface (23).

5. The optical coupling plate automatic tester according to claim 4, wherein: The 220V AC power input end (10) and the power switch (1), the power switch (1) and the power module (11), the power module (11) and the three control board assemblies are connected by wires.

6. The optical coupling plate automatic tester according to claim 5, wherein: The host computer data line interface (12) is in wire communication with the signal input ports (20) of the three control board assemblies respectively; the signal output ports (21) of the three control board assemblies are in one-to-one correspondence with the three signal receiving ends (24) of the motherboard assembly (8); and the power supply test ports (17) of the three control board assemblies are in communication with the DC stabilized power input interface (3) and the digital multimeter test interface (4).

7. The optical coupling plate automatic tester according to claim 6, wherein: The optical coupler board automatic tester is developed based on STM32 embedded automatic control technology, and the to-be-tested optical coupler board is stably plugged with the motherboard assembly (8); the host computer sends control signals to the STM32 control core of the lower computer in sequence through the data line according to the test program, the STM32 calculates the control signals according to the lower computer program, and then sends the calculated signals to the corresponding relays; the on or off of different relays controls the on of the to-be-tested optical coupler board corresponding point and the DC stabilized power supply or the digital multimeter, realizes the power-on of the DC stabilized power supply to the to-be-tested optical coupler board point by point, and makes the digital multimeter test the impedance of the to-be-tested optical coupler board point by point.

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