Alarm control circuit suitable for fault guiding safety of urban rail metro vehicle
A technology for controlling circuit and vehicle faults, which is applied to railway signal and safety, signal indicators on vehicles, railway signals, etc., can solve problems such as vigilance protection function failure, failure to trigger emergency braking, etc., to optimize vigilance control logic, Flexible use and safe effect
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Embodiment 1
[0031] In order to better illustrate the beneficial effects of the circuit of the present invention, take an existing domestic subway vehicle that has been successfully operated for many years as an example, the vigilance control circuit diagram is as follows figure 1 shown.
[0032] The alert circuit only forms a logic circuit independently when the driver's cab is activated. The specific control logic and operation are:
[0033] (1) After the vehicle is activated by the battery and the operating terminal is activated, in a static state, since the "zero speed" relay ZVR is energized, its normally open contacts are closed, so that the vigilance relay DMAR coil is energized, and its two normally closed contacts Disconnect, so that the electric delay action alert relay DMTDR1 and DMTDR2 can not be powered, and the follow-up control logic is cut off. This state is equivalent to bypassing the driver to trigger the vigilance function by operating the main handle of the controller ...
Embodiment 2
[0038] Please refer to figure 2 As shown, the present invention provides a kind of vigilance control circuit suitable for urban rail subway vehicle fault-oriented safety;
[0039] The vigilance control circuit can effectively solve the problem that the vigilance circuit line or a certain device in the circuit is disconnected due to a fault, and the vigilance protection function fails at this time, and the emergency braking cannot be triggered;
[0040] The vigilance control circuit includes vigilance switch 1 of the main handle of the driver controller, one end of the vigilance switch 1 of the main handle of the driver controller is connected with the second console diode terminal row CDT3, and the other end of the vigilance switch 1 of the main handle of the driver controller is connected with a zero speed Relay 4, the second power-off delay action alert relay contact 7 and the fourth power-off delay action alert relay contact 9, the other end of the zero-speed relay 4 is co...
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