阅读说明：本技术 一种数字列尾应急电台及其实现方法 (Digital train tail emergency radio station and implementation method thereof ) 是由 罗群 李世凯 黄明耀 于 2020-08-10 设计创作，主要内容包括：本发明公开了一种数字列尾应急电台及其实现方法。该电台包括开关电源芯片、ARM处理器芯片、存储芯片、数字信道机、液晶显示屏、背光驱动芯片、音频功放芯片、扬声器和键盘；通过数字信道机的电池为设备供电,通过开关电源芯片进行供电电压转换；通过ARM处理器芯片对数字信道机进行控制管理并采集键盘按键信息,通过数字信道机进行列尾数据的接收和发送；通过液晶显示屏进行列尾和操作信息显示,通过背光驱动芯片为液晶显示屏提供背光驱动；通过音频功放芯片和扬声器进行语音播报；通过存储芯片存储配置信息和记录数据；实现了数字模式列尾通信和数据记录。(The invention discloses a digital train tail emergency radio station and an implementation method thereof. The radio station comprises a switching power supply chip, an ARM processor chip, a storage chip, a digital channel machine, a liquid crystal display screen, a backlight driving chip, an audio power amplifier chip, a loudspeaker and a keyboard; the battery of the digital channel machine supplies power to the equipment, and the switching power supply chip converts the supply voltage; the ARM processor chip is used for controlling and managing the digital channel machine, collecting keyboard key information and receiving and sending column tail data through the digital channel machine; the display of the column tail and the operation information is carried out through the liquid crystal display screen, and backlight drive is provided for the liquid crystal display screen through a backlight drive chip; voice broadcasting is carried out through the audio power amplifier chip and the loudspeaker; storing configuration information and record data through a memory chip; and the digital mode column tail communication and data recording are realized.)

1. A digit train tail emergency radio station which characterized in that: the system comprises a switching power supply chip with the model of LM22670, an ARM processor chip with the model of LPC4357, a memory chip with the model of MX66L51 51235F, a digital channel machine with the model of TK-D348R, a liquid crystal display screen with the model of G043FW01, a backlight driving chip with the model of TPS61165, an audio power amplifier chip with the model of SSM3302, a loudspeaker with the model of HBYDT0306-1APZ and a keyboard; the input end of the switch power supply chip is connected with a battery power supply output interface of the digital channel machine, and the output end of the switch power supply chip is connected with a DC3.3V power supply interface of the equipment; the UART1 interface of the ARM processor chip is connected with a UART1 interface of a digital channel machine, the GPIO interface is connected with a keyboard, the SPI _ FLASH interface is connected with a storage chip, and the display control LCD interface is connected with a data interface of a liquid crystal display screen; the input end of the backlight driving chip is connected with a battery power supply output interface of the digital channel machine, and the output end of the backlight driving chip is connected with a backlight power supply interface of the liquid crystal display screen; the input end of the audio power amplifier chip is connected with the DAC interface of the ARM processor, and the output end of the audio power amplifier chip is connected with the loudspeaker.

2. The method as claimed in claim 1, wherein the digital train tail emergency broadcasting station comprises: the power supply of a digital channel machine battery DC 7.4V is converted into DC3.3V by a switching power supply chip and then is supplied to equipment; the ARM processor chip controls and manages the digital channel machine through a UART1 interface, transmits the train tail communication data to be transmitted to the digital handheld station channel machine, then wirelessly transmits the train tail communication data through the digital handheld station channel machine, receives the wireless train tail communication data through the digital handheld station channel machine, and transmits the wireless train tail communication data to the ARM processor chip for processing, so that the train tail communication data in a 400MHz digital mode are transmitted and received; the ARM processor chip collects and processes keyboard key information through the GPIO interface, performs data communication with the storage chip through the SPI _ FLASH interface, realizes storage and reading of configuration information and recording data, and controls the liquid crystal display screen to display column tail and operation information through the display control LCD interface; the backlight driving chip is used for converting DC 7.4V power supply of a digital channel machine battery into DC 26V power supply to provide backlight driving for the liquid crystal display screen; and the audio power amplifier chip amplifies the audio signals output by the DAC interface of the ARM processor and transmits the amplified audio signals to a loudspeaker for voice broadcasting.

Technical Field

The invention relates to a train tail safety protection system, in particular to a digital train tail emergency radio station capable of replacing a dual-mode train tail locomotive radio station to carry out train tail communication in a 400MHz digital mode and an implementation method thereof.

Background

The train tail safety protection system is mature and applied to railways in China for many years, and plays an important role in guaranteeing railway driving safety and improving transportation efficiency. At present, a 400MHz digital + GSM-R dual-mode cargo train tail safety protection system is comprehensively popularized in China, has two communication modes of 400MHz digital and GSM-R, and mainly comprises a dual-mode train tail locomotive radio station, a train tail host and auxiliary equipment. When the dual-mode train tail locomotive radio station equipment fails to perform train tail communication due to equipment self problems or other reasons during train operation, the equipment generally needs to be stopped to troubleshoot the failure reasons of the equipment for repairing or replacing the equipment, the installation environment space of the train equipment is narrow, the operation difficulty of the equipment for repairing or replacing the train equipment on the train is high, the consumed time is long, and adverse effects can be generated on the running safety and the transportation efficiency of the railway. In field application, a portable emergency device is needed to replace a dual-mode train tail locomotive radio station to carry out train tail communication when the dual-mode train tail locomotive radio station fails, and train operation can be quickly recovered.

Disclosure of Invention

In view of the problems in the prior art, the invention provides a digital train tail emergency radio station and an implementation method thereof, which can replace a dual-mode train tail locomotive radio station to carry out train tail communication in a 400MHz digital mode, in order to meet the requirement that the train tail communication can be quickly recovered when the train tail locomotive radio station fails in the railway running process.

The technical scheme adopted by the invention is as follows: a digit train tail emergency radio station which characterized in that: the system comprises a switching power supply chip with the model of LM22670, an ARM processor chip with the model of LPC4357, a memory chip with the model of MX66L51 51235F, a digital channel machine with the model of TK-D348R, a liquid crystal display screen with the model of G043FW01, a backlight driving chip with the model of TPS61165, an audio power amplifier chip with the model of SSM3302, a loudspeaker with the model of HBYDT0306-1APZ and a keyboard; the input end of the switch power supply chip is connected with a battery power supply output interface of the digital channel machine, and the output end of the switch power supply chip is connected with a DC3.3V power supply interface of the equipment; the UART1 interface of the ARM processor chip is connected with a UART1 interface of a digital channel machine, the GPIO interface is connected with a keyboard, the SPI _ FLASH interface is connected with a storage chip, and the display control LCD interface is connected with a data interface of a liquid crystal display screen; the input end of the backlight driving chip is connected with a battery power supply output interface of the digital channel machine, and the output end of the backlight driving chip is connected with a backlight power supply interface of the liquid crystal display screen; the input end of the audio power amplifier chip is connected with the DAC interface of the ARM processor, and the output end of the audio power amplifier chip is connected with the loudspeaker.

The invention discloses a method for realizing a digital train tail emergency radio station, which comprises the following steps: the power supply of a digital channel machine battery DC 7.4V is converted into DC3.3V by a switching power supply chip and then is supplied to equipment; the ARM processor chip controls and manages the digital channel machine through a UART1 interface, transmits the train tail communication data to be transmitted to the digital handheld station channel machine, then wirelessly transmits the train tail communication data through the digital handheld station channel machine, receives the wireless train tail communication data through the digital handheld station channel machine, and transmits the wireless train tail communication data to the ARM processor chip for processing, so that the train tail communication data in a 400MHz digital mode are transmitted and received; the ARM processor chip collects and processes keyboard key information through the GPIO interface, performs data communication with the storage chip through the SPI _ FLASH interface, realizes storage and reading of configuration information and recording data, and controls the liquid crystal display screen to display column tail and operation information through the display control LCD interface; the backlight driving chip is used for converting DC 7.4V power supply of a digital channel machine battery into DC 26V power supply to provide backlight driving for the liquid crystal display screen; and the audio power amplifier chip amplifies the audio signals output by the DAC interface of the ARM processor and transmits the amplified audio signals to a loudspeaker for voice broadcasting.

The invention has the beneficial effects that: the train tail communication method has the advantages that when the train tail locomotive radio station fails in the railway running process, the train tail communication can be carried out in a 400MHz digital mode instead of a dual-mode train tail locomotive radio station, and train running can be quickly recovered.

Drawings

Fig. 1 is a schematic diagram of the circuit of the present invention.

Detailed Description

For a more clear understanding of the present invention, reference is now made to the following detailed description taken in conjunction with the accompanying drawings and examples.

As shown in fig. 1, a digital train tail emergency station is characterized in that: the system comprises a switching power supply chip with the model number of LM22670, an ARM processor chip with the model number of LPC4357, a storage chip with the model number of MX66L51 51235F, a digital channel machine with the model number of TK-D348R, a liquid crystal display screen with the model number of G043FW01, a backlight driving chip with the model number of TPS61165, an audio power amplifier chip with the model number of SSM3302, a loudspeaker with the model number of HBYDT0306-1APZ and a keyboard.

The input end of the switch power supply chip is connected with a battery power supply output interface of the digital channel machine, and the output end of the switch power supply chip is connected with a power supply interface of the device DC3.3V; the digital channel machine battery DC 7.4V power supply is converted into DC3.3V power supply through the switching power supply chip, and then the power supply is supplied to the equipment.

The UART1 interface of the ARM processor chip is connected with a UART1 interface of a digital channel machine, the GPIO interface is connected with a keyboard, the SPI _ FLASH interface is connected with a storage chip, and the display control LCD interface is connected with a data interface of a liquid crystal display screen; the ARM processor chip controls and manages the digital channel machine through a UART1 interface, transmits the train tail communication data to be transmitted to the digital handheld station channel machine, then wirelessly transmits the train tail communication data through the digital handheld station channel machine, receives the wireless train tail communication data through the digital handheld station channel machine, and transmits the wireless train tail communication data to the ARM processor chip for processing, so that the train tail communication data in a 400MHz digital mode are transmitted and received; the ARM processor chip acquires and processes keyboard key information through the GPIO interface; the SPI _ FLASH interface is used for carrying out data communication with the storage chip to realize the storage and reading of configuration information and record data; and controlling the liquid crystal display screen to display the column tail and the operation information through the display control LCD interface.

The input end of the backlight driving chip is connected with a battery power supply output interface of the digital channel machine, and the output end of the backlight driving chip is connected with a backlight power supply interface of the liquid crystal display screen; the digital channel machine battery DC 7.4V power supply is converted into DC 26V through the backlight driving chip, and backlight driving is provided for the liquid crystal display screen.

The input end of the audio power amplifier chip is connected with a DAC interface of the ARM processor, and the output end of the audio power amplifier chip is connected with a loudspeaker; and the audio power amplifier chip amplifies the audio signals output by the DAC interface of the ARM processor and transmits the amplified audio signals to a loudspeaker for voice broadcasting.

The invention realizes train tail communication in 400MHz digital mode instead of the dual-mode train tail locomotive radio station when the dual-mode train tail locomotive radio station has fault in the railway running process, and the train operation is quickly recovered.