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Railway Vehicle Displays

A railway vehicle and display technology, which is applied in the field of railway vehicle passenger information system, can solve the problems of complex display structure, single communication mode, narrow power supply range, etc., and achieve the effect of fast and effective program update, compact and flexible structure, and wide working voltage range

Inactive Publication Date: 2011-12-14
CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the existing domestic railway vehicle display has a complex structure, narrow power supply range and lack of corresponding protection, no online update program function, single communication mode and no CRC check, and the row and column drive mode can only display fixed-height characters, only Level 2 Brightness adjustment, most LEDs use integrated display modules, low brightness and small viewing angle

Method used

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  • Railway Vehicle Displays
  • Railway Vehicle Displays
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specific Embodiment approach 1

[0012] Specific implementation mode one: as Figures 1 to 2 Shown, a kind of railway car exterior display, described display comprises a display circuit board and a main board, and display circuit board comprises LED row, column driving circuit and 9216 surface-mounted LED bright light-emitting diodes, LED row, The column drive circuit adopts a high-power circuit, which can drive ≤300 LEDs at the same time, and can adjust the brightness of ≤256 levels through the program. The visible distance of 9216 surface-mounted LEDs is 30-60m, and the viewing angle It is 120-150 degrees; the main board includes a power circuit board, a communication circuit board and a microprocessor circuit board, and the power circuit board is connected with the display circuit board through a power cable, and provides power for the display circuit board and the microprocessor circuit board. The power circuit board is equipped with a power interface to receive the input DC power. The DC power voltage ra...

specific Embodiment approach 2

[0019] Specific implementation mode two: as Figures 1 to 2 Shown, a kind of in-car display of railway vehicle, described display comprises a display circuit board and a main board, and display circuit board comprises LED row, column drive circuit and 9216 surface-mounted LED bright light-emitting diodes, LED row, The column drive circuit adopts a high-power circuit, which can drive ≤300 LEDs at the same time, and can adjust the brightness of ≤256 levels through the program. The visible distance of 9216 surface-mounted LEDs is 30-60m, and the viewing angle It is 120-150 degrees; the main board includes a power circuit board, a communication circuit board and a microprocessor circuit board, and the power circuit board is connected with the display circuit board through a power cable, and provides power for the display circuit board and the microprocessor circuit board. The power circuit board is equipped with a power interface to receive the input DC power. The DC power voltage...

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Abstract

The invention relates to a display for railway vehicles. The display includes a display circuit board and a main board, and the main board is connected to the display circuit board through a bus; the display circuit board includes LED row and column drive circuits and 9216 surface-mounted LEDs High-brightness light-emitting diodes, LED row and column drive circuits adopt high-power circuits, which can drive ≤300 LEDs at the same time, and can adjust the brightness of ≤256 levels through the program; the main board includes power circuit boards, communication circuit boards and microprocessor circuit boards Among them, the power supply circuit board converts the DC input into 3.3V power supply for internal circuits, and the DC input range can reach 66V-154V. The microprocessor circuit board adopts ARM microprocessor, and the code includes bootloader and executable program. Online upgrade executable program through bootloader. The invention has the advantages of simple and reasonable structure, wide working voltage range, no damage to the bus due to the protection function, and diverse and reliable communication modes.

Description

technical field [0001] The invention relates to a railway vehicle passenger information system, in particular to a display device in a high-speed EMU passenger information system. Background technique [0002] With the development of modern rail transit technology, higher requirements are put forward in terms of train intelligence, automation, and convenience. In high-speed EMUs, network-based systems are used to realize automatic communication, centralized control, and convenient maintenance and diagnosis. Passenger information system is very necessary, especially the passenger-oriented display terminal in-vehicle display and out-vehicle display in the passenger information system. Information such as real-time vehicle speed and the environment outside the vehicle; the display device outside the vehicle needs to realize the sub-units for displaying the train number, carriage number, time, departure station, and terminal station. [0003] At present, the existing domestic r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/32G09F9/33
Inventor 胡波刘澳
Owner CRRC QINGDAO SIFANG ROLLING STOCK RES INST
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