CN208737456U - A kind of column tail traffic operation display terminal - Google Patents
A kind of column tail traffic operation display terminal Download PDFInfo
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- CN208737456U CN208737456U CN201821455619.1U CN201821455619U CN208737456U CN 208737456 U CN208737456 U CN 208737456U CN 201821455619 U CN201821455619 U CN 201821455619U CN 208737456 U CN208737456 U CN 208737456U
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Abstract
The utility model discloses a kind of column tail traffic operation display terminals.The terminal includes switching power source chip, LDO power supply chip, arm processor chip, two storage chips, liquid crystal display, backlight driving chip, RS-422 interface chip, audio frequency power amplifier chip, loudspeaker and keyboard；Conversion is powered by switching power source chip and LDO power supply chip；Arm processor chip passes through I/O mouthfuls of acquisition keypad key press informations, pass through storage chip storage configuration information and record data, record data downloading is realized by USB storage device, column tail is carried out by connection liquid crystal display and operation information is shown, passes through connection RS-422 interface chip and column tail locomotive platform main-machine communication；Liquid crystal display is connected by backlight driving chip, and backlight drive is provided；Arm processor is connected by audio frequency power amplifier chip and loudspeaker carries out voice broadcast；Realize operation, the display, record and the downloading of voice broadcast and data of the communication of column tail.
Description
Technical field
The utility model relates to last vehicle of train security protection system, in particular to a kind of column tail traffic operation display terminal.
Background technique
Railway train tail security protection system has guarantee driving safety in China railways maturation with for many years
Important function.Currently, train end information wireless transmission generallys use 450MHz frequency range analog system, wanted according to Ministry of Industry and Information's associated documents
Summation railway user demand will be popularized in an all-round way in the whole nation and use the digitized bimodulus last vehicle of train security protection system of all new generation
System；Data record only is carried out in host in traditional simulation last vehicle of train security protection system locomotive platform equipment simultaneously, and column tail
Traffic operation display terminal does not have the ability of data record and downloading, is not easy to very much the operation and maintenance of equipment.
Summary of the invention
In view of problem of the prior art, in order to meet the digitlization upgrading of railway train tail security protection system equipment；
Meanwhile solving not having because of column tail traffic operation display terminal inconvenient caused by data record and download capabilities, the utility model
A kind of column tail traffic operation display terminal is provided.
The technical scheme adopted by the utility model is that: a kind of column tail traffic operation display terminal, it is characterised in that: including type
Number for the switching power source chip of LM22670, the LDO power supply chip of model SPX1117-3.3, model LPC4357 ARM at
Manage storage chip, the liquid crystal display of model G043FW01, model of device chip, two model MX66L51235F
The backlight driving chip of TPS61165, the RS-422 interface chip of model MAX490E, model SSM3302 audio frequency power amplifier
The loudspeaker and keyboard of chip, model HBYDT0306-1APZ；It is characterized by: the switching power source chip input terminal connection
External power supply passes through output end to the power supply of other devices after DC13.8V is converted to DC5V；The connection of LDO power supply chip input terminal
Switching power source chip output end passes through output end to the power supply of other devices after DC5V is converted to DC3.3V；Arm processor chip
Keyboard output is connected by I/O interface, SPI1 interface connects the first storage chip, SPI_FLASH interface connection the second storage core
Piece, USB interface connect external USB and store equipment, display control interface LCD connection data in liquid crystal display screen interface；RS-422 connects
The UART1 interface of the Transistor-Transistor Logic level end interface connection arm processor chip of mouth chip, RS-422 level end interface connect outer array
Tail locomotive platform host；Backlight driving chip input terminal connects external power supply, and output end connects LCD screen backlight supply input
Interface；Audio frequency power amplifier chip input terminal connects the DAC interface of arm processor, and output end connects loudspeaker input interface.
The utility model design principle: being that other devices are powered after DC5V is converted to DC3.3V by LDO power supply chip；
Arm processor chip is acquired by I/O interface and keypad key press information and is handled, and the spi bus of SPI1 interface and the are passed through
One storage chip carries out the storage and reading that data communication realizes configuration information, and the SPI_FLASH by SPI_FLASH interface is total
Line and the second storage chip carry out the storage and reading that data communication realizes record data, by the usb bus of USB interface and outer
Portion's USB storage device carries out communication and realizes record data downloading, controls liquid crystal display by display control interface and carries out column tail
It is shown with operation information,；Arm processor UART1 interface and outer array tail locomotive platform host are carried out by RS-422 interface chip
Between the bridge joint of Transistor-Transistor Logic level and RS-422 level realize data communication；External DC13.8V is powered by backlight driving chip and is converted
Backlight drive is provided for DC26V for liquid crystal display；The audio that audio frequency power amplifier chip exports the DAC interface of arm processor is believed
It number amplifies after processing output and carries out voice broadcast to loudspeaker.
The beneficial effects of the utility model are: realize column tail communication operation, display, voice broadcast and data record
And downloading.
Detailed description of the invention
Fig. 1 is the utility model circuit theory schematic diagram.
Specific embodiment
The utility model is understood in order to clearer, is described in detail below in conjunction with drawings and examples.
As shown in Figure 1, a kind of column tail traffic operation display terminal includes switching power source chip, LDO power supply chip, at ARM
Reason device chip, liquid crystal display, backlight driving chip, RS-422 interface chip, audio frequency power amplifier chip, is raised two storage chips
Sound device and keyboard；Switching power source chip model LM22670, LDO power supply chip model SPX1117-3.3, arm processor core
Piece model LPC4357, two storage chip model MX66L51235F, liquid crystal display model G043FW01, backlight are driven
Dynamic chip model is TPS61165, RS-422 interface chip model MAX490E, audio frequency power amplifier chip model is SSM3302, raises
Sound device model HBYDT0306-1APZ.
Switching power source chip input terminal connects external power supply, by DC13.8V be converted to after DC5V by output end to other
Device power supply；LDO power supply chip input terminal connection switch power supply chip output end, passes through output after DC5V is converted to DC3.3V
It holds to other devices and powers.
The I/O interface connection keyboard output of arm processor chip, by I/O interface capture button information and is handled；
SPI1 interface connects the first storage chip, carries out data communication by spi bus and the first storage chip and realizes configuration information
Storage and reading；SPI_FLASH interface connects the second storage chip, is carried out by SPI_FLASH bus and the second storage chip
Data communication realizes the storage and reading of record data；USB interface connects external USB and stores equipment, will be recorded by usb bus
Data download in external USB equipment；Display control interface LCD connection data in liquid crystal display screen interface, passes through LCD interface instruction
Column tail is carried out with data control liquid crystal display and operation information is shown.
Backlight driving chip input terminal connects external power supply, and output end connects LCD screen backlight supply input interface,
External DC13.8V power supply is converted into DC26V and provides backlight drive for liquid crystal display.
The UART1 interface of the Transistor-Transistor Logic level end interface connection arm processor chip of RS-422 interface chip, RS-422 level
End interface connects outer array tail locomotive platform host, realizes arm processor UART1 interface Transistor-Transistor Logic level and outer array tail locomotive platform master
The bridge joint of machine RS-422 level, to realize the data communication between arm processor chip and outer array tail locomotive platform host.
Audio frequency power amplifier chip input terminal connects the DAC interface of arm processor, and output end connects loudspeaker input interface, will
Loudspeaker progress voice broadcast is given in output after the audio signal of the DAC interface output of arm processor amplifies processing.
Claims (1)
1. a kind of column tail traffic operation display terminal, it is characterised in that: switching power source chip, type including model LM22670
Number be the LDO power supply chip of SPX1117-3.3, the arm processor chip of model LPC4357, two models
The first storage chip and the second storage chip, the liquid crystal display of model G043FW01, model of MX66L51235F
The backlight driving chip of TPS61165, the RS-422 interface chip of model MAX490E, model SSM3302 audio frequency power amplifier
The loudspeaker and keyboard of chip, model HBYDT0306-1APZ；The switching power source chip input terminal connects external power supply, will
DC13.8V is powered by output end to other devices after being converted to DC5V；LDO power supply chip input terminal connection switch power supply chip
Output end passes through output end to the power supply of other devices after DC5V is converted to DC3.3V；Arm processor chip passes through I/O interface
Keyboard output is connected, SPI1 interface connects the first storage chip, and SPI_FLASH interface connects the second storage chip, and USB interface connects
Connect external USB storage equipment, display control interface LCD connection data in liquid crystal display screen interface；The TTL electricity of RS-422 interface chip
Flush end interface connects the UART1 interface of arm processor chip, and RS-422 level end interface connects outer array tail locomotive platform host；
Backlight driving chip input terminal connects external power supply, and output end connects LCD screen backlight supply input interface；Audio frequency power amplifier
Chip input terminal connects the DAC interface of arm processor, and output end connects loudspeaker input interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821455619.1U CN208737456U (en) | 2018-09-06 | 2018-09-06 | A kind of column tail traffic operation display terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821455619.1U CN208737456U (en) | 2018-09-06 | 2018-09-06 | A kind of column tail traffic operation display terminal |
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| Publication Number | Publication Date |
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| CN208737456U true CN208737456U (en) | 2019-04-12 |
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| CN201821455619.1U Active CN208737456U (en) | 2018-09-06 | 2018-09-06 | A kind of column tail traffic operation display terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111817808A (en) * | 2020-08-10 | 2020-10-23 | 天津七一二通信广播股份有限公司 | Digital train tail emergency radio station and implementation method thereof |
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2018
- 2018-09-06 CN CN201821455619.1U patent/CN208737456U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111817808A (en) * | 2020-08-10 | 2020-10-23 | 天津七一二通信广播股份有限公司 | Digital train tail emergency radio station and implementation method thereof |
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