基于Modbus RTU协议的矿用语音通信主机设计

Design of mine-used voice communication host based on Modbus RTU protocol

针对煤矿井下采煤工作面使用的语音通信系统存在语音失真、漏报、功能单一、与其他系统难以融合等问题,提出了一种基于Modbus RTU协议的矿用语音通信主机的软硬件设计方案。该主机既可通过兼容有源和无源方式输入的开关量控制内部预存语音的播报,也可通过Modbus RTU协议命令控制语音合成芯片及功放电路播放语音;同时可接入外部音频信号,当音频检测电路检测到有外部音频输入时,打开功放电路及时播放,满足井下现场不同系统间的语音通信需求。

In view of problems of distorted voice, missing broadcasting, single function and incompatible with other system existed in current voice communication system used in underground coal face, hardware and software design schemes of a mine-used voice communication host based on Modbus RTU protocol were proposed. The host can not only control internal stored voice broadcasting through switching value which is compatible with active and passive input, but also control voice broadcasting of voice synthesis chip and power amplifier circuit by Modbus RTU protocol. External audio signal can be accessed to the host and broadcasted timely through the power amplifier circuit when it is detected by audiodetection circuit. The host meets requirements of underground voice communication between different systems.