A centralized on-off control method for display screens of subway vehicles

A technology of display control and on-off control, applied in locomotives and other directions, can solve problems such as inconvenient maintenance or test work, and achieve the effects of ingenious control circuit design, convenient operation, and safe and reliable control.
CN104908755BActive Publication Date: 2017-05-17CRRC NANJING PUZHEN CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CRRC NANJING PUZHEN CO LTD
Publication Date
2017-05-17

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Abstract

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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Description

technical field

[0001] The invention relates to a centralized on-off control method for display screens of subway vehicles, belonging to the technical field of electrical control of subway vehicles. Background technique

[0002] At present, the on-off of the LCD screen of the subway vehicle is realized according to whether the train is powered on, that is, when the train is powered on, the whole train is powered on, and the LCD screen is powered on to work; when the train is dormant, the whole train is powered off, and the LCD screen is powered off stop working. However, in actual operation, when the train is being overhauled or tested in the depot, the train is powered on but does not need to watch multimedia information content. When dozens of LCD screens in the whole train are all put into operation, the power consumption is relatively large. To turn off the LCD screens of the whole train, only the LCD circuit breaker of each car can be turned off. The two circuit break...

Claims

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