Test circuit, detection device and method for detecting electronic switch board
A technology for testing circuits and testing switches, which is applied in the field of testing equipment, testing electronic switch boards, and testing circuits, and can solve the problems of low failure detection efficiency of electronic switch boards
Active Publication Date: 2020-08-25
SGIS SONGSHAN CO LTD
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- Abstract
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- Application Information
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Problems solved by technology
[0005] The purpose of this application is to provide a test circuit, a detection device and a method for detecting electronic switch boards, so as to improve the problem of low efficiency of fault detection for electronic switch boards in the prior art
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[0093] As an implementation, the test switch group 230 includes at least one toggle switch (such as figure 2 in MK1, MK2, MK3, MK4). Each switch in the at least one toggle switch includes two groups of normally open nodes capable of mutual linkage.
[0094] One of the two groups of normally open nodes is connected in series between the coil of the relay DGJ and the third test terminal of the plug assembly CJT. The other group of normally open nodes in the two groups of normally open nodes is connected to the current limiting device 220 to access the first working power supply, and the other group of normally open nodes in the two groups of normally open nodes is also connected to a detection switch MK5 , the detection switch MK5 is used to access the reference signal.
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The embodiment of the invention provides a test circuit, a detection device and a method for detecting an electronic switch board. The test circuit comprises a voltage transformation and rectificationdevice, a current limiting device, a relay, an indication device, a test switch group and a plug-in assembly used for being connected with a switch board to be tested. The first test end of the plug-in assembly is used for providing a reference signal for the switch board to be tested. The output end of the voltage transformation and rectification device is connected with the current limiting device. The current limiting device is connected with the second test end of the plug-in assembly. The output end of the voltage transformation and rectification device is also connected with a coil of arelay, the coil of the relay is connected with a test switch group, the test switch group is connected with a third test end of the plug-in assembly, and the second test end and the third test end are respectively used for providing a first working power supply and a second working power supply for a to-be-tested switch board. The output end of the voltage transformation and rectification deviceis further connected with a contact switch of the relay, the contact switch of the relay is connected with the indicating device, and the indicating device is used for outputting indicating signals when a coil of the relay is powered on.
Description
technical field [0001] The present application relates to the field of DC track circuit detection systems, in particular, to a test circuit, a detection device and a method for detecting an electronic switch board. Background technique [0002] At present, the track circuits of some industrial and mining enterprises have adopted safety-protected DC electronic switch track circuits, and a core device will be used in the application process of DC electronic switch track circuits: electronic switch boards. There are many small electronic components on the electronic switch board. These small electronic components have a large number and variety, and the operating voltage and operating current are small. [0003] When the electronic switchboard is used normally, the electronic switchboard is installed outdoors and is electrically connected to the actual rail on the railway site. When testing and repairing the electronic switch board, it is necessary to take the electronic switc...
Claims
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IPC IPC(8): G01R31/28G01R31/52G01R31/54G01R1/28
CPCG01R31/2843G01R31/52G01R31/54G01R1/28
Inventor 刘明才曹启坤郑粤勇黄伟兴陈科
Owner SGIS SONGSHAN CO LTD
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