Backlight control method for subway train front-end destination display
A backlight control and destination technology, applied in static indicators, instruments, etc., can solve the problems of energy waste, poor customer experience, short service life, etc., to achieve the effect of good experience and extended service life
Active Publication Date: 2021-12-17
CRRC NANJING PUZHEN CO LTD
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Problems solved by technology
[0004] The invention provides a method for controlling the backlight of a destination display at the front end of a subway vehicle, which solves the problems of energy waste, short service life and poor customer experience caused by the invalid display of the FDU in the passenger information system of the current subway vehicle
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Embodiment 1
[0073] This embodiment provides a preferred implementation solution, a method for controlling the backlight of a destination display at the front of a subway vehicle, including an FDU, a broadcast host, a light sensor, and a voltage / current module, wherein:
[0074] The above-mentioned FDU receives the door-opening signal, forecast station signal and door-closing signal sent by the above-mentioned broadcasting host, and the FDU turns on or off the backlight of the FDU according to the received signal; the above-mentioned light sensor is installed on the train to collect the luminous flux information of the environment where the train is located , and transmit this information to the voltage / current module; the above-mentioned voltage / current module receives the backlight enable signal, the voltage signal output by the light sensor and the line information signal, and the voltage / current module outputs the corresponding backlight drive current according to the received signal, T...
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The invention belongs to the technical field of subway train passenger information systems, and particularly relates to a backlight control method for a subway train front-end destination display, the method comprises the following steps: S1, dividing T into three time intervals, wherein T is the total time between a train being powered on and leaving the warehouse and returning to the dormancy at the end of one day's operation, and the three time intervals are respectively a first time interval, a second time interval and a third time interval; s1-1, dividing the first time interval; s1-2, dividing the second time interval; s1-3, dividing the third time interval; s2, setting a time interval in which backlight needs to be turned on / off in train operation T time; s3, respectively marking the time interval for entering the platform from the viaduct / tunnel in the time interval divided by the train operation T time in the step S1; s4, inputting information; and S5, backlight brightness adjustment. The method has the beneficial effect that the problems of energy waste, short service life and poor customer experience caused by invalid backlight display of the FDU are solved.
Description
technical field [0001] The invention belongs to the technical field of subway train passenger information systems, and in particular relates to a method for controlling the backlight of a destination display at the front end of a subway vehicle. Background technique [0002] At present, the subway train passenger information system is usually configured with two front-end destination displays (hereinafter referred to as FDU). The FDU is installed in the area above the front end of the driver's cab at both ends of the train to provide platform passengers with information on the destination of the vehicle. In the current project, after the train is powered on, all equipment of the passenger information system starts to run. The FDU also starts running after the train is powered on. The backlight of the FDU is always on, and the driving current is constant until the train returns to the warehouse to sleep after a day of operation. Usually a train operates for about 20 hours a...
Claims
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Login to View More IPC IPC(8): G09G3/34
CPCG09G3/3406Y02B20/40
Inventor 沈先丽孙永才徐少红吴界奇王乐
Owner CRRC NANJING PUZHEN CO LTD