A Power Amplifier for Train Broadcasting Passenger Room Based on Linux Platform

Abstract

The invention relates to a train broadcast passenger room power amplifier based on a Linux platform, which is connected with a train broadcast control box and comprises an amplifier body, and an embedded processor, an audio processor, a network communication module and a storage module which are arranged in the amplifier body, and train road section site information is stored in the storage module; A broadcast passenger room power amplification control program based on Linux runs in the embedded processor, and the operation executed by the broadcast passenger room power amplification control program comprises the steps that in response to the position of a station where a train is located, an audio processor is called to broadcast a current station based on train road section station information; In response to a broadcast signal of the train broadcast control box, an audio processor is called to realize audio collection, echo cancellation processing and playing; And when the audio processor is called, the playing volume is adjusted according to the environment noise signal, and sound channel control information is sent to the audio processor. Compared with the prior art, the method has the advantages of high reliability and stability and the like.

Description

technical field [0001] The invention relates to the technical field of train broadcasting, in particular to a power amplifier for a train broadcasting cabin based on a Linux platform. Background technique [0002] With the development of rail transit, more and more systems adopt digital systems, and the train broadcasting system is no exception. The power amplifier in the train broadcasting cabin is the core component of the train broadcasting system, and it is the core component directly facing the passengers. The power amplifier in the passenger room of the train broadcasting can transmit the speech content of the OCC dispatching center, the speech content of the driver, prompt information in emergency situations and train operation information to passengers in a timely and effective manner. [0003] In existing project execution, both analog and digital have their advantages. In the traditional analog system, the anti-interference ability is poor, the scalability is poo...

AI Technical Summary

Problems solved by technology

In the traditional analog system, the anti-interference ability is poor, the scalability is poor, the full-duplex intercom cannot be realized, and the intercom real-time performance is high; in the modern digital system, the full-duplex intercom echo cannot be effectively realized, and the Control the timeliness of intercom, unable to effectively record intercom, but strong anti-interference ability, strong flexibility and other functions

[0004] As the requirements of customers become more and more abundant, the existing system cannot effectively perform system self-diagnosis, system status query, system fault diagnosis, etc., and the sound quality of calls cannot be effectively controlled. Improve

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