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.


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    Title :

    Metro vehicle display screen centralized on-off control method


    Contributors:
    XU SHAOHONG (author) / ZHANG SHUN (author) / KANG XU (author) / XUE JUAN (author) / FENG YINBIN (author)

    Publication date :

    2015-09-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B61C Lokomotiven , LOCOMOTIVES



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