A Safety Loop State Monitoring System
A technology of a condition monitoring system and a safety circuit, applied in the field of rail transit safety monitoring, can solve problems such as poor safety, failure to eliminate faults in time, and failure to determine relay failures in time, and achieve the effect of improving safety performance.
Active Publication Date: 2019-01-08
CHONGQING CHUANYI AUTOMATION
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Problems solved by technology
However, in the prior art, when a relay among multiple relays fails, it is usually impossible to determine in time which relay corresponding to the door machine controller fails, so that the fault cannot be eliminated in time, and the safety is poor.
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[0029] The core of the present invention is to provide a safety loop state monitoring system, because each controller is provided with a serial number, therefore, the maintenance personnel can report the fault information of the unclosed main relay to the serial number of the controller of the upper computer. It is determined in time which relay is faulty, so that the fault can be eliminated in time, and the safety performance is improved.
[0030] 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 ...
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The invention discloses a safety loop state monitoring system. The system comprises a main safety loop, an upper computer and N controllers which are provided with numbers. The main safety loop comprises N main relays which forms one-to-one correspondence with the N controllers provided with the numbers and N main voltage division circuits. The N main relays are successively connected in series. The N main voltage division circuits are correspondingly arranged between main throwing contact points and main normally-open contact points of the main relays respectively. Output terminals of the main voltage division circuits are connected to the controllers corresponding to the main relays. The controllers determine whether the main relays are closed based on levels of the output terminals of the main voltage division circuits and fault information of the unclosed main relay is reported to the upper computer. Because each controller has the number, maintenance personnel can timely determine which relay has a fault according to the number of the controller which reports the fault information of the unclosed main relay to the upper computer so that the fault can be timely eliminated and safety performance is increased.
Description
technical field [0001] The invention relates to the technical field of rail transit safety monitoring, in particular to a safety loop state monitoring system. Background technique [0002] In the existing rail transit in various cities, the platform usually corresponds to multiple door machine controllers. In order to ensure the safety of passengers, a relay will be assigned to each door machine controller. All relays are connected in series to form a safety loop. Only when all When the relay is closed, that is, the safety circuit is closed, the upper computer will give a signal that the safety door is closed and locked, and the train can leave the station normally. However, in the prior art, when a certain relay among the multiple relays fails, it is usually impossible to determine in time which relay corresponding to the door operator controller fails, so that the failure cannot be eliminated in time, and the safety is poor. [0003] Therefore, how to effectively solve th...
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IPC IPC(8): G01R31/327
CPCG01R31/327
Inventor 田波马乾徐光建刘先振
Owner CHONGQING CHUANYI AUTOMATION