Power-loss time-delay relay-type alert control method
A technology of time-delay relay and control method, applied in the field of rail vehicles, can solve the problems of shortened life, short life, loss of power of relay, etc., and achieve the effect of guaranteeing service life, avoiding high-frequency loss of power and high reliability
Active Publication Date: 2014-06-18
CRRC NANJING PUZHEN CO LTD
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Problems solved by technology
However, the DMRR relay adopts electronic time delay, which has a short lifespan. In addition, the driver will inevitably shake hands during driving, which will cause the relay to lose power and power up in a short time. Such a high-frequency action will intensify the shortening. Its life, easily lead to increased failure rate
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[0016] First, press figure 1 Wiring: Connect the lead wires to the positive busbar of the train; connect the warning button DMS and the resistor DMZ in series at the outlet end of the lead wires, and connect the capacitor DMC, the reverse diode D1601 and the intermediate relay DMR in parallel between the outlet end of the resistor DMZ and the negative busbar of the train. Coil; the normally open switch of the intermediate relay DMR is connected to the external emergency braking device (not shown in the figure); the alert button DMS is a self-resetting normally open switch.
[0017] At the same time, determine the resistance value of the resistor DMZ, the capacity of the capacitor DMC, and the equivalent resistance and equivalent inductance of the intermediate relay DMR according to the voltage between the positive and negative busbars and the preset delay time: in this embodiment, the voltage between the positive and negative busbars is DC110V; The resistance of DMZ is 470 ohm...
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Abstract
The invention relates to a power-loss time-delay relay-type alert control method. The power-loss time-delay relay-type alert control method comprises the following steps: carrying out circuit layout; continuously pressing an alert button so as to enable an emergency braking device to keep in a non-trigger state; releasing the alert button to begin power-loss delay, so that an intermediate relay is out of power so as to enable the emergency braking device to be in a triggering state; emergently braking a train. According to the power-loss time-delay relay-type alert control method, the high frequency power loss and power receiving of the intermediate relay in a short period of time can be prevented so as to guarantee the service life of a whole alert circuit, and the emergency braking can be started in time after the alert button is released at a scheduled time, so that the reliability is high.
Description
technical field [0001] The invention relates to a power-off delay relay type vigilance control method, which is suitable for rail vehicles. Background technique [0002] As far as the applicant knows, the rail vehicle is equipped with a vigilance circuit, which can prevent the driver from dozing off, sloppy or accidents during operation, and reminds the driver to drive normally. Usually, the driver will turn on the emergency brake after leaving the driver controller for 3 seconds. move. In the existing vigilance circuit, a DMRR relay connected in series with the vigilance button is usually used, and the power will be lost 3 seconds after the vigilance button is released, and then emergency braking will be triggered. However, the DMRR relay adopts electronic time delay, which has a short lifespan. In addition, the driver will inevitably shake hands during driving, which will cause the relay to lose power and power up in a short time. Such a high-frequency action will intensi...
Claims
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Inventor 梁汝军陈志李军鞠丽丽高琦陈杰
Owner CRRC NANJING PUZHEN CO LTD