A linux platform-based train broadcasting connection controller

Abstract

The invention relates to a train broadcast coupling controller based on a Linux platform. The controller comprises a controller 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 controller body; a train broadcast coupling control program based on the Linuxplatform runs in the embedded processor; operations executed by the train broadcast coupling control program comprise carrying out legality inspection of system resources after the controller is started, monitoring whether a coupling signal is triggered or not in real time, responding to the coupling signal and calling the audio processor to conduct audio acquisition, echo cancellation processingand playing; the operation of responding to the coupling signal includes the steps that communication links between four driver terminals of two coupled trains are controlled to be connected; automatic repair is carried out under an abnormal condition, and a self-recovery alarm is uploaded at the same time; the working mode is switched from a digital mode to an analog mode when a network breaks down. Compared with the prior art, the controller has the advantages of being high in 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 connection controller 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. At present, the subway has 4 formations, 6 formations and 8 formations, etc. When a train breaks down, we need to carry out rescue operations. In the train rescue mode, it is necessary to realize the intercom broadcasting and intercom between the trains. [0003] The traditional analog system cannot realize the full-duplex intercom between the four cabs during the connected rescue, but can only realize the point-to-point half-duplex intercom. The modern digital system basically can only realize the intercom between two drivers, and cannot realize the conversation of four drivers. It is necessary to improve the existing train broadcasting...

AI Technical Summary

Problems solved by technology

[0003] The traditional analog system cannot realize the full-duplex intercom of the four cabs during the connected rescue, but can only realize the point-to-point half-duplex intercom

The modern digital system can basically only enable two drivers to communicate, but cannot realize four drivers to speak on the phone. It is necessary to improve the existing train broadcasting controller

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