Testing device for remote IO equipment

Abstract

The utility model discloses a testing device for remote IO equipment. The testing device comprises an upper computer, a programmable power supply and an IO controller, the upper computer is connected with the programmable power supply, and the programmable power supply is connected with remote IO equipment to be tested and provides voltage with a preset voltage value for the remote IO equipment; the upper computer is connected with the IO controller, a DO interface of the IO controller is connected with a DI interface of the remote IO device, and a DI interface of the IO controller is connected with a DI interface of the remote IO device. Through the technical scheme of the utility model, the voltage test and the interface function test of the remote IO equipment are realized, and the test efficiency and the test standardization degree are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit testing, in particular to a testing device for remote IO equipment. Background Art

[0002] Currently, there is no existing device that can perform voltage testing and interface function testing on remote IO devices, and it is also impossible to record the test results and generate test reports. Utility Model Content

[0003] In response to the above problems, the utility model provides a testing device for remote IO devices, which provides different power supply voltages and excitations to the remote IO devices through the control of the programmable power supply by the upper computer, and realizes voltage testing and interface function testing of the remote IO devices by monitoring the signal status of the DI and DO interfaces of the remote IO devices. The test results of the remote IO devices can be recorded and analyzed to generate test reports, realize the test process, and improve test efficiency and test standardization.

[0004] To achieve the above object, the utility model provides a test device for remote IO equipment, comprising: a host computer, a programmable power supply and an IO controller;

[0005] The host computer is connected to the programmable power supply, and the programmable power supply is connected to the remote IO device to be tested, providing a voltage of a preset voltage value to the remote IO device;

[0006] The host computer is connected to the IO controller, the DO interface of the IO controller is connected to the DI interface of the remote IO device, and the DI interface of the IO controller is connected to the DI interface of the remote IO device.

[0007] In the above technical solution, preferably, the programmable power supply outputs a high voltage exceeding 25% of the rated voltage to the remote IO device, or outputs a low voltage 30% lower than the rated voltage to the remote IO device.

[0008] In the above technical solution, preferably, the DO interface of the IO controller is connected to the DI interface of the remote IO device through a fuse.

[0009] In the above technical solution, preferably, the DI interface of the IO controller is connected to the DO interface of the remote IO device through an isolation relay.

[0010] In the above technical solution, preferably, the testing device for the remote IO device further includes a printer, and the host computer is further connected to the printer.

[0011] Compared with the existing technology, the beneficial effects of the present invention are: different power supply voltages and excitations are provided to remote IO devices through the control of the programmable power supply by the upper computer, and the voltage test and interface function test of the remote IO device are realized by monitoring the signal status of the DI and DO interfaces of the remote IO device. The test results of the remote IO device can be recorded and analyzed to generate a test report, thereby realizing the test process and improving the test efficiency and the degree of test standardization. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the architecture of a test device for remote IO devices disclosed in one embodiment of the present utility model;

[0013] Figure 2 This is a schematic diagram of an interface connection method of a test device for a remote IO device disclosed in an embodiment of the present utility model.

[0014] In the figure, the corresponding relationship between each component and the reference numeral is as follows:

[0015] 1. Host computer, 2. Programmable power supply, 3. IO controller, 4. Printer, 5. Fuse, 6. Isolation relay, 7. Remote IO device. DETAILED DESCRIPTION

[0016] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0017] The present invention is described in further detail below with reference to the accompanying drawings:

[0018] like Figure 1 and Figure 2 As shown, a test device for remote IO equipment provided by the present utility model includes: a host computer 1, a programmable power supply 2 and an IO controller 3;

[0019] The host computer 1 is connected to the programmable power supply 2, which is connected to the remote IO device to be tested, and provides a voltage of a preset voltage value to the remote IO device 7;

[0020] The host computer 1 is connected to the IO controller 3 , the DO interface of the IO controller 3 is connected to the DI interface of the remote IO device 7 , and the DI interface of the IO controller 3 is connected to the DI interface of the remote IO device 7 .

[0021] In this embodiment, the upper computer 1 controls the programmable power supply 2 to provide different power supply voltages and excitations to the remote IO device 7, and the voltage test and interface function test of the remote IO device 7 are realized by monitoring the signal status of the DI and DO interfaces of the remote IO device 7. The test results of the remote IO device 7 can be recorded and analyzed to generate a test report, thereby realizing the test process and improving the test efficiency and test standardization.

[0022] Specifically, during the operating voltage test, the host computer 1 controls the programmable power supply 2 to change the supply voltage of the remote IO device 7 to test the operating voltage of the remote IO device 7. The operating voltage test of the remote IO device is completed by monitoring the operating status and communication status of the remote IO device 7 when the power supply voltage is different.

[0023] During the DI port test, the signal is generated by an AC220V to DC24V switching power supply. The high and low levels are input to the DI port of the remote IO device 7 by switching the DC24V voltage on and off. The host computer 1 controls the output of the DO interface through the IO controller 3, and then monitors the status of the DI interface of the remote IO device 7 in real time through the host computer 1, thereby realizing the test of the DI signal of the remote IO device 7.

[0024] During the DO port test, the host computer 1 controls the signal output status of the remote IO device 7DO interface by connecting a DC24V power supply in series, and then stimulates the switch quantity acquisition interface of the IO controller 3 with a signal. The host computer 1 monitors the signal of the DO interface of the remote IO device 7 collected by the DI interface of the IO controller 3, and tests the DO signal of the remote IO device 7.

[0025] In the above embodiment, preferably, the programmable power supply 2 outputs a high voltage that is 25% higher than the rated voltage to the remote IO device 7, or outputs a low voltage that is 30% lower than the rated voltage to the remote IO device 7, and monitors the operating status and communication status of the remote IO device 7 when powered by high voltage and low voltage to complete the operating voltage test of the remote IO device.

[0026] In the above embodiment, preferably, the DO interface of the IO controller 3 is connected to the DI interface of the remote IO device 7 through the fuse 5, and the connection to the remote IO device 7 is disconnected when the current exceeds the preset fuse current to avoid the high-voltage signal from affecting the remote IO device 7.

[0027] In the above embodiment, preferably, the DI interface of the IO controller 3 is connected to the DO interface of the remote IO device 7 through the isolation relay 6. When monitoring the output signal of the remote IO device 7, the isolation relay 6 is used to avoid current influence, reduce interference, and improve the accuracy of the monitoring signal.

[0028] In the above embodiment, preferably, the testing device of the remote IO device 7 also includes a printer 4, and the host computer 1 is also connected to the printer 4, so that the host computer 1 determines the functionality of the port by comparing the consistency of the stimulus and monitoring signals, and after generating a test record table for the result, the result can be directly printed into a paper report in real time through the printer 4.

[0029] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A test device for a remote IO device, characterized in that: include: Host computer, programmable power supply and IO controller; The host computer is connected to the programmable power supply, and the programmable power supply is connected to the remote IO device to be tested, providing a voltage of a preset voltage value to the remote IO device; The host computer is connected to the IO controller, the DO interface of the IO controller is connected to the DI interface of the remote IO device, and the DI interface of the IO controller is connected to the DI interface of the remote IO device.

2. The test device for remote IO equipment according to claim 1, characterized in that: The programmable power supply outputs a high voltage exceeding 25% of a rated voltage to the remote IO device, or outputs a low voltage lower than 30% of a rated voltage to the remote IO device.

3. The test device for remote IO equipment according to claim 1, characterized in that: The DO interface of the IO controller is connected to the DI interface of the remote IO device through a fuse.

4. The test device for remote IO equipment according to claim 3, characterized in that: The DI interface of the IO controller is connected to the DO interface of the remote IO device through an isolation relay.

5. The test device for remote IO equipment according to any one of claims 1 to 4, characterized in that: It also includes a printer, and the host computer is connected to the printer.

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