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Centralized on-off control circuit for display screens of subway vehicles

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: 2017-06-20
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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  • Centralized on-off control circuit for display screens of subway vehicles
  • Centralized on-off control circuit for display screens of subway vehicles

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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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Abstract

The display screen of the subway vehicle is centralized on-off control circuit, and its main circuit breaker, self-locking button, normally open contact of the driver's cab activation relay, and display screen shut-off relay are connected in series to form the main circuit of the display screen control; the display screen of each car controls the contact The circuit breaker is connected in series with the normally closed contact of the display shut-off relay through the line, and then connected to the main circuit breaker to form the display control sub-circuit of each vehicle; the display control contactor of each vehicle has two pairs of normally open contacts, They are respectively connected in series between the left circuit breaker and the left display screen, and between the right circuit breaker and the right display screen. By pressing the self-locking button in the activated cab, the LCD screen of the entire train can be closed and opened centrally. The control circuit of the invention has ingenious design, safe and reliable control, and convenient operation, which brings convenience to maintenance 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 Patents(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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