最近,日本神田通信公司试制成功了一种防止高压触电报警器(见图1),它能在操作工人靠近高压危险区域时,立即发出连续报警声。 这种报警器重量很轻,只有47克,其形状象一个皮带圆环,可以套在工人的手腕上。它的工作原理见图2。 装在皮带环中的天线可以感知高压电的大小,当天线与高 Recently, Kanda Corporation of Japan successfully prototyped a high-voltage electric shock alarm (see Figure 1), which can be issued in the continuous high-pressure hazardous area operator immediately alarm. The alarm is light and weighs only 47 grams, shaped as a belt loop that can be worn over the worker’s wrist. It works as shown in Figure 2. The antenna installed in the belt loop can sense the size of the high voltage when the antenna is high