本发明涉及到工业控制领域，尤其涉及到一种运用电力线载波通讯模块传递报警信息的气体检测报警系统。
The invention relates to the field of industrial control, in particular to a gas detection alarm system using power line carrier communicating module to transfer alarm information.
介绍一种利用220伏同相电力线载波传送dtmf编码数据的系统中的通讯及控制电路的设计，它与数据采集电路及数据处理电路构成一个完整的系统。
The design of the communication and controlling circuit that transmits DTMF code in AC220 inphase power line is presented. It forms a complete system with data picking and processing circuit.
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