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2004·12·3日本三菱电器公司成功研制出一套利用电波探测闯客的保安系统,较传统使用红外线的保安系统便宜得多。比红外线便宜据介绍,这套电波探测系统,包括两对长达1500公尺的无线电收发电线,两条用作发出电波,另外两条则用作接收电波,两对电线平衡铺设在受监控的地区周围,再?
2004 · 12 · 3 Japan’s Mitsubishi Electric Corporation has successfully developed a security system that uses radio waves to detect a rogue, much cheaper than a traditional security system using infrared light. Cheaper than infrared According to reports, the wave detection system, including two pairs of up to 1500 meters of radio transceiver cables, two for the issue of radio waves, the other two are used to receive radio waves, two pairs of wires laid in the balance of the monitored Around the area, then?