A Train Broadcasting Control Box Based on Ethernet Network

Abstract

The present invention is a train broadcast control box based on Ethernet network, which is a broadcast controller located in the driver's cab in the train vehicle broadcast system, including a central processing unit connected to the Ethernet network through an Ethernet interface, and a separate electrical Connect the LCD display module, button module, crystal oscillator, SD card module and buzzer module of the central processing unit; the central processing unit is connected to the audio codec chip through the SPI bus, and the central processing unit is connected to the system debugging through the JTAG interface and the UART interface module; the audio codec chip is respectively connected to the audio amplifier module and the microphone / pickup; the audio amplifier module is connected to the speaker; it also includes a power supply module for supplying power to other modules and circuits. By adopting the technical solution of the invention, various functional requirements can be flexibly expanded, operation and control response modes with other devices, system software firmware upgrade, remote reading of stored files, etc., reducing use cost and maintenance cost.

Description

Technical field [0001] The invention relates to the fields of high-speed train broadcasting systems and subway broadcasting systems, in particular to a train broadcasting control box based on an Ethernet network. Background technique [0002] The train on-board broadcast system is an important part of the train passenger information system. It provides functions such as station information broadcast, station information display, manual broadcast, manual intercom, and emergency intercom during the operation of the train. From the perspective of application scenarios Generally speaking, it played a very important role. [0003] The internal system structure of the traditional driver operation terminal equipment is single, the driver microphone of some terminal equipment is separated from the speaker, the button operation is silent, the interface is single, the function is single, and some are even composed of pins derived from the control host; in the humanized design It is inferior...

AI Technical Summary

Problems solved by technology

[0003] The internal system structure of the traditional driver-operated terminal equipment is single, the driver's microphone and the speaker of some terminal equipment are separated, the key operation has no prompt, the interface is single, and the function is single, and some are even composed of pins drawn from the control host; in humanized design The aspect is poor, it is easy to misuse, the IO communication port between the devices has a long pin lead, which is susceptible to interference and signal attenuation, and the system stability is poor

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