Switch machine control circuit, a system, a control method and a fault detection method
A technology for controlling circuits and switch machines, which is applied to circuits, circuit devices, relays, etc., and can solve the problems of affecting the normal operation of circuits, failure to detect faults in circuits, and high cost
Active Publication Date: 2019-01-11
TRAFFIC CONTROL TECH CO LTD
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Problems solved by technology
[0007] The present invention solves the problem that the existing switch machine control circuit mostly uses the gravity relay as the control switch, and this type of device requires regular maintenance, low safety and high cost
[0008] On the other hand, the present invention aims to solve the problem that the existing switch machine control circuit often affects the normal operation of the circuit during the circuit maintenance process and cannot detect the fault of the circuit
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[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, 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 described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0033] figure 1 It is a schematic diagram of the circuit structure of the switch machine control circuit provided in this embodiment, see figure 1, the control circuit includes a first control module ( figure 1 In the shown control circuit, the first control module is driven by CPU1), the detection module, the first safety relay S1, the sec...
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The embodiment of the invention discloses a switch machine control circuit, a system, a control method and a fault detection method, the switch machine control circuit uses a power electronic device as a device for conducting a DC power supply and a switch machine terminal, Power electronic devices belong to contactless devices, which can not generate electric sparks due to excessive instantaneouscurrent in the process of switching on and off, so they do not need to be maintained regularly, thus saving the cost and time of maintaining the control circuit, and making the operation of the control circuit safer. In addition, power electronic devices are smaller in size and lower in cost than other switching devices. A safety relay is used as a switch for conducting the terminal and the powersupply or the detection module, so that the terminal and the power supply can be physically disconnected when the terminal and the detection module are conducting, and the influence of the leakage current of the power electronic device on the detection module is avoided, which not only ensures the detection accuracy of the detection module, but also ensures the safety of the control circuit.
Description
technical field [0001] The embodiments of the present invention relate to the technical field of switch machine control, in particular to a switch machine control circuit, system, control method and fault detection method. Background technique [0002] In urban rail transit, switch control is realized through switch machines. In general interlocking systems, such as 6502 electrical centralized interlocking and computer interlocking, a large number of relays are generally used to realize the control scheme, mainly including locking relay SJ, directional operation relay DCJ, reverse operation relay FQJ, and a start relay 1QDJ, second start relay 2QDJ, forward position means relay DBJ, reverse position means relay FBJ and a large number of gravity relays, these relays have the following problems in use: expensive; regular maintenance is required; gravity relays are large in size and large in number. [0003] Although there are some technologies to solve the above problems, for...
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IPC IPC(8): H02J9/06H01H47/02
CPCH01H47/02H02J9/061H02J9/068
Inventor 郜春海刘波
Owner TRAFFIC CONTROL TECH CO LTD