The research indicates that, the arc sound presents a ringing series of that occurs at the end of short circuit transfer or moment of arc re-ignition, and its energy mostly distributes in frequency band below 10 kHz. 研究认为:电弧声呈现振铃形信号,主要发生于短路结束再引弧时刻,大部分能量分布在10kHz以下频带。
There are many circuits in hardware, including switch power circuit, microcontroller circuit, wireless communication circuit, ringing circuit, keyboard scanning circuit, audio input/ output circuit and relay controlling circuit. 硬件组成上包括开关电源电路、微控制器电路、无线通信电路、振铃电路、键盘扫描电路、语音输入电路、语音输出电路和继电器控制电路。
Voice prompt function module, this module main realization in striation condition inquiry prompt function, through ringing circuit realization prompt operation. 2. 本模块主要实现在线状态查询的提示功能,通过振铃电路实现提示操作。2、自动摘挂机功能。