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Subway vehicle display screen concentrated on-off control circuit

A technology of display screen control and on-off control, applied to static indicators, instruments, etc., can solve problems such as inconvenient maintenance or test work, and achieve the effects of ingenious design, safe and reliable control, and convenient operation

Active Publication Date: 2015-08-12
CRRC NANJING PUZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the maintenance or test is completed, the circuit breaker of each car's electrical cabinet is turned on and off, which brings inconvenience to the maintenance or test work.

Method used

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  • Subway vehicle display screen concentrated on-off control circuit
  • Subway vehicle display screen concentrated on-off control circuit

Examples

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Embodiment Construction

[0014] The scheme of the present invention will be described in detail below by taking a train of 6 vehicles (the formation method is: A-B-C-C-B-A, and the two units of the train A-B-C are completely symmetrical) as an example.

[0015] Such as figure 1 As shown, it is a display control circuit of a train unit (A-B-C three cars), figure 2 It is the display control circuit diagram in car A, and car B and car C are the same as car A. As shown in the figure, the centralized on-off control circuit of the subway vehicle display screen of the present invention includes: the driver's cab activation relay normally open contact COR, the main circuit breaker CB1 used to control the display screen connected to the train power supply, and the electrical appliances located in each car The left circuit breaker LCB used to control the left display screen and the right circuit breaker RCB used to control the right display screen in the cabinet also include: the self-locking button PB and th...

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PUM

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Abstract

A subway vehicle display screen concentrated on-off control circuit is characterized in that a main breaker, a self-locking button, a cab activation relay normally open contact and a display screen turn-off relay are connected in series orderly to form a display screen control main loop, a display screen control contactor of each section of carriage is in series connection with the normally closed contact of the display screen turn-off relay via a line and then is connected with the main breaker to form a display screen control sub-loop of each section of carriage; and the display screen control contactor of each section of carriage has two pairs of normally open contacts which are in series connection between a left breaker and a left side display screen, and between a right breaker and a right side display screen respectively. By pressing down the self-locking button in an activation cab, the concentrated turn-on and turn-off of the liquid crystal display screens of the whole train can be realized. The subway vehicle display screen concentrated on-off control circuit of the present invention is ingenious in design, is safe and reliable to control and convenient to operate, and brings conveniences to the overhauling or test work.

Description

technical field [0001] The invention relates to a centralized on-off control circuit 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 brea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
Inventor 徐少红张顺康旭薛娟冯寅斌
Owner CRRC NANJING PUZHEN CO LTD
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