The invention relates to a metro vehicle display screen centralized on-off control method, which is realized by using a control circuit. A main circuit breaker, a self-locking button, a cab activated relay normally-open contact, and a display screen on-off relay of the control circuit are serially connected in sequence to form a display screen control main loop; the display screen control contactor of each section of the vehicle is serially connected with the normally-closed contact of the display screen on-off relay via a line and then connected with the main circuit breaker, thereby forming a display screen control sub loop for each section of the vehicle; and the display screen control contactor of each section of the vehicle is provided with two pairs of normally-open contacts which are serially connected between a left circuit breaker and a left display screen and between a right circuit breaker and a right display screen respectively. Through pressing the self-locking button in the activated cab, liquid crystal display screen of the overall vehicle can be on and off in a centralized mode. The control circuit is delicately designed, the control is safe and reliable, the operation is convenient, and convenience is brought to maintenance or test work.
Metro vehicle display screen centralized on-off control method
2015-09-16
Patent
Electronic Resource
English
IPC: | B61C Lokomotiven , LOCOMOTIVES |
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