A train broadcast control box based on linux platform

Abstract

The invention relates to a train broadcast control box based on a Linux platform. The control box comprises a control box body, an embedded processor, an audio processor and a network communication module, wherein the embedded processor, the audio processor and the network communication module are arranged in the control box body. A train broadcast control program based on Linux runs in the embedded processor, and the operation executed by the train broadcast control program based on Linux comprises: performing the legitimacy inspection of system resources after the control box is started, anduploading a self-inspection result; monitoring the working state of the control box in real time, and performing the automatic repairing under the abnormal condition, and meanwhile, uploading a self-recovery alarm; monitoring the state of the network communication module in real time, and switching a working mode from a digital mode to an analog mode when the network has a fault; monitoring whether external signal triggering exists or not in real time, and responding to an external signal; and calling an audio processor to realize audio collection, echo cancellation processing and playing. Compared with the prior art, the control box 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 train broadcasting control box 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 train broadcast control box is the core component of the train broadcast system. It is a necessary tool for the driver to broadcast to the train cabin, respond to passenger emergency calls, communicate with the opposite driver and communicate with the control center. [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 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 Contr...

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 customer's requirements 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. It is necessary to improve the existing train broadcast control box

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