Testing device for digital quantity I / O board card

Abstract

The utility model provides a testing device for a digital quantity I / O board card. The testing device comprises an I / O control circuit board; the I / O control circuit board is integrated with a digital quantity I / O board card interface and a plurality of columns of test assemblies; each column of test components comprises a plurality of test units; each test unit comprises an overvoltage / overcurrent protection device interface, a toggle switch and an indicating lamp which are integrated on the I / O control circuit board; the overvoltage / overcurrent protection device interface is connected with the toggle switch and the indicating lamp. And the overvoltage / overcurrent protection device interface is connected with an overvoltage / overcurrent protection device. According to the utility model, the on-off of each channel of the digital quantity I / O board card is tested through each test unit, each channel of the digital quantity I / O board card is tested at the same time, the production efficiency is effectively improved, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of digital I / O board testing technology, and in particular to a testing device for digital I / O boards. Background Technology

[0002] A digital I / O board is a hardware device used to process digital signals. Its main function is to acquire the on / off status (input) of external devices or control the on / off actions (output) of external devices. It is widely used in industrial automation, electronic testing, equipment control and other fields, and is a key interface connecting a computer or controller with external devices.

[0003] In the process of manufacturing digital I / O boards, appropriate testing methods and fixtures are required to test the digital I / O boards.

[0004] In existing technologies, when testing digital I / O boards, the method is to directly apply I / O digital signals to the interface lines of the digital I / O board, or to use a PLC to test the digital I / O board.

[0005] Applying I / O digital signals directly to the interface lines of digital I / O boards is inefficient and poses safety risks when high voltage is applied to the I / O digital signals; using a PLC to test digital I / O boards is too costly. Utility Model Content

[0006] This invention proposes a testing device for digital I / O boards to solve the technical problems of low efficiency and high cost in existing testing of digital I / O boards.

[0007] One aspect of this utility model is to provide a testing device for digital I / O boards, the testing device comprising: an I / O control circuit board;

[0008] The I / O control circuit board integrates digital I / O board interfaces and multiple rows of test components; each row of test components includes multiple test units.

[0009] Each test unit includes: an overvoltage / overcurrent protection device interface, a toggle switch, and an indicator light integrated on the I / O control circuit board;

[0010] The overvoltage / overcurrent protection device interface is connected to the toggle switch and the indicator light; the overvoltage / overcurrent protection device interface is connected to the overvoltage / overcurrent protection device.

[0011] In a preferred embodiment, the testing apparatus further includes a 220VAC to 110VDC conversion module, which is connected to the overvoltage / overcurrent protection device;

[0012] The 220VAC to 110VDC converter module is used to receive 220V AC voltage and convert it into a 110VDC digital signal.

[0013] In a preferred embodiment, the testing apparatus further includes a base plate and a housing;

[0014] The base plate is fastened and fixed to the cover, and the I / O control circuit board is fixed inside the cover.

[0015] In a preferred embodiment, the I / O control circuit board is provided with a plurality of studs, and the housing has a plurality of screw holes; the I / O control circuit board is fixed inside the housing by the engagement of the studs and the screw holes.

[0016] In a preferred embodiment, the base plate has a plurality of bends, the bends having a first fixing hole, and the cover having a plurality of second fixing holes;

[0017] The first fixing hole and the second fixing hole are fixed by bolts, so that the base plate is fastened and fixed to the cover.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This invention proposes a testing device for digital I / O boards. It integrates the digital I / O board interface and multiple rows of test components on an I / O control circuit board. Each row of test components includes multiple test units. Each test unit includes an overvoltage / overcurrent protection device interface, a toggle switch, and an indicator light integrated on the I / O control circuit board. The overvoltage / overcurrent protection device interface connects to the toggle switch and indicator light, and also connects to an overvoltage / overcurrent protection device. By testing the continuity of each channel of the digital I / O board through each test unit, simultaneous testing of each channel of the digital I / O board is achieved, effectively improving production efficiency and reducing production costs.

[0020] This invention proposes a testing device for digital I / O boards, which is safe and reliable in control, and also easy to debug and maintain. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a testing device for digital I / O boards according to the present invention.

[0023] Figure 2 This is an exploded view of a testing device for digital I / O boards according to this utility model. Detailed Implementation

[0024] To make the above and other features and advantages of this utility model clearer, the utility model will be further described below with reference to the accompanying drawings. It should be understood that the specific embodiments given herein are for the purpose of explanation to those skilled in the art, and are exemplary only, not restrictive.

[0025] Combination Figure 1 and Figure 2 According to an embodiment of the present invention, a testing device for digital I / O boards is provided, comprising: a cover 100, an I / O control circuit board 200, and a base plate 300.

[0026] The base plate 300 is fastened and fixed to the cover 100, and the I / O control circuit board 200 is fixed inside the cover 100.

[0027] Specifically, such as Figure 2 As shown, the I / O control circuit board 200 is fixed with multiple studs 205, and the housing 100 has multiple screw holes 103. The I / O control circuit board 200 is fixed inside the housing 100 by the engagement of the studs 205 and the screw holes 103.

[0028] The base plate 300 has multiple bends 301, each bend 301 having a first fixing hole 3011, and the cover 100 has multiple second fixing holes 104. The first fixing holes 3011 and the second fixing holes 104 are fixed by bolts, so that the base plate 300 and the cover 100 are fastened together.

[0029] In a preferred embodiment, the housing 100 and the base plate 300 are made of aluminum alloy, which has good thermal conductivity and corrosion resistance. The I / O control circuit board 200 is fixed inside the housing 100, and the I / O control circuit board 200 can dissipate heat through the housing 100.

[0030] In some embodiments, the I / O control circuit board 200 is attached to the housing 100, and a grounding post is provided on the housing 100 to make the I / O control circuit board 200 safer and more reliable.

[0031] According to an embodiment of this utility model, the I / O control circuit board 200 integrates a digital I / O board interface 201 and multiple rows of test components. Each row of test components includes multiple test units. The digital I / O board interface 201 is used to connect to the digital I / O board.

[0032] like Figure 2 As shown, in this embodiment, the I / O control circuit board 200 integrates four rows of test components: the first row of test components a, the second row of test components b, the third row of test components c, and the fourth row of test components d. Each row of test components includes 16 test units, for a total of 64 test units, to enable testing of 64 digital I / O boards. That is, one test unit tests one channel of the 64 digital I / O boards.

[0033] In some embodiments, each column of test components is configured with 18 test units, for a total of 72 test units, to enable testing of 72 digital I / O boards.

[0034] like Figure 2 As shown, each test unit includes: an overvoltage / overcurrent protection device interface 202, a toggle switch 204, and an indicator light 203 integrated on the I / O control circuit board 200. The overvoltage / overcurrent protection device interface 202 is connected to the toggle switch 204 and the indicator light 203, and an overvoltage / overcurrent protection device (not shown in the figure) is connected to the bottom of the overvoltage / overcurrent protection device interface 202.

[0035] According to an embodiment of the present invention, the testing device further includes a 220VAC to 110VDC conversion module (not shown in the figure), which is connected to an overvoltage / overcurrent protection device.

[0036] The 220VAC to 110VDC converter module is used to connect to 220V AC voltage and convert it into a 110VDC digital signal.

[0037] Specifically, the 220VAC to 110VDC conversion module converts 220V AC voltage into a 110VDC digital signal, which is then input to the overvoltage / overcurrent protection device. The overvoltage / overcurrent protection device inputs the 110VDC digital signal to the I / O control circuit board 200, the toggle switch 204 of each test unit, and the indicator light 203 through the overvoltage / overcurrent protection device interface 202 of each test unit. The I / O control circuit board 200 inputs the 110VDC digital signal to the digital I / O board through the digital I / O board interface 201, applying the 110VDC digital signal (I / O digital signal) to the digital I / O board.

[0038] A toggle switch 204 in a test unit is used to control the on / off state of one channel of a digital I / O board. Specifically, the I / O control circuit board 200 is equipped with connecting lines so that the toggle switch 204 of a test unit corresponds to one channel of the digital I / O board, and the indicator light 203 of a test unit corresponds to one channel of the digital I / O board.

[0039] By using the toggle switch 204 of each test unit, the I / O control circuit board 200 controls the on / off state of the 110VDC digital signal input to each channel of the digital I / O board, thereby testing each channel of the digital I / O board.

[0040] When the toggle switch 204 of a certain test unit controls the conduction of one channel of the digital I / O board, the I / O control circuit board 200 inputs a 110VDC digital signal into the corresponding channel of the digital I / O board.

[0041] If indicator light 203 of the test unit lights up, the corresponding channel of the digital I / O board is in good condition.

[0042] If indicator light 203 of the test unit is off, then there is a fault in the corresponding channel of the digital I / O board.

[0043] In some embodiments, when the 110VDC digital signal output by the 220VAC to 110VDC conversion module is abnormal, the overvoltage / overcurrent protection device provides overvoltage / overcurrent protection for the overvoltage / overcurrent protection device interface 202, I / O control circuit board 200, toggle switch 204 and indicator light 203 of each test unit, so as to avoid damage to the overvoltage / overcurrent protection device interface 202, I / O control circuit board 200, toggle switch 204 and indicator light 203 of each test unit.

[0044] Furthermore, the housing 100 has mounting holes 101 for mounting digital I / O board interfaces 201. The housing 100 also has a 220VAC to 110VDC converter module mounting port 102 for mounting the 220VAC to 110VDC converter module, so that the 220VAC to 110VDC converter module can be connected to an external 220V AC voltage.

[0045] This embodiment has a total of 64 test units. The following description uses the test of a 64-channel digital I / O board as an example to illustrate the test process of this utility model.

[0046] The 64-channel digital I / O board is connected to a testing device for digital I / O boards provided by this utility model via the digital I / O board interface 201.

[0047] A 220VAC to 110VDC converter module is connected to a 220V AC voltage and converted into a 110VDC digital signal, which is then input to the overvoltage / overcurrent protection device. The overvoltage / overcurrent protection device, through its interface 202 in each test unit, inputs the 110VDC digital signal to the I / O control circuit board 200, the toggle switch 204 in each test unit, and the indicator light 203. The I / O control circuit board 200 inputs the 110VDC digital signal to 64-channel digital I / O boards through the digital I / O board interface 201, applying the 110VDC digital signal (I / O digital signal) to the 64-channel digital I / O boards.

[0048] Each test unit controls the on / off state of the 110VDC digital signal input to each channel (64 channels in total) of the 64-channel digital I / O board.

[0049] Specifically, the toggle switch 204 of each test unit controls the on / off state of the 110VDC digital signal input to each channel (64 channels in total) of the 64-channel digital I / O board 200, thereby testing each channel (64 channels in total) of the 64-channel digital I / O board.

[0050] When the toggle switch 204 of a certain test unit controls one channel of the 64-channel digital I / O board to be turned on, the I / O control circuit board 200 inputs a 110VDC digital signal to one channel of the 64-channel digital I / O board.

[0051] If indicator light 203 of the test unit lights up, the corresponding channel of the 64-channel digital I / O board is in good condition.

[0052] If indicator light 203 of the test unit is off, then the channel corresponding to the 64-channel digital I / O board is faulty.

[0053] The 64 channels of a 64-channel digital I / O board are tested simultaneously using 64 test units. The status of each channel is displayed via indicator lights in each test unit, facilitating problem identification. The on / off status of each channel can be flexibly switched, making the testing more efficient and reliable.

[0054] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A test apparatus for a digital I / O board card, characterized by, The test device comprises an I / O control circuit board; The I / O control circuit board is integrated with a digital I / O board card interface and a plurality of test assemblies; each test assembly comprises a plurality of test units; Each test unit comprises an overvoltage / overcurrent protection device interface, a button switch and an indicator lamp integrated on the I / O control circuit board; The overvoltage / overcurrent protection device interface is connected with the button switch and the indicator lamp; the overvoltage / overcurrent protection device interface is connected with an overvoltage / overcurrent protection device.

2. The test device of claim 1, wherein, The test device further comprises a 220VAC to 110VDC conversion module connected with the overvoltage / overcurrent protection device; The 220VAC to 110VDC conversion module is used for connecting 220V AC voltage and converting it into 110V DC digital signal.

3. The test device of claim 1, wherein, The test device further comprises a bottom plate and a cover; The bottom plate is fixedly connected with the cover, and the I / O control circuit board is fixed in the cover.

4. The test device of claim 3, wherein, The I / O control circuit board is provided with a plurality of studs, and the cover is provided with a plurality of screw holes; the I / O control circuit board is fixed in the cover by cooperation of the studs and the screw holes.

5. The test device of claim 3, wherein, The bottom plate is provided with a plurality of bending parts, the bending parts are provided with first fixing holes, and the cover is provided with a plurality of second fixing holes; The first fixing holes and the second fixing holes are fixed by bolts, so that the bottom plate and the cover are fixedly connected.

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