| 摘要 |
PROBLEM TO BE SOLVED: To provide a durable and highly reliable apparatus for reporting intrusion. SOLUTION: A piezoelectric sensor 2 provided with an inner side electrode, a pressure sensitive member provided around the inner side electrode and an outer side electrode provided around the pressure sensitive member and configured in a cable shape is installed inside a sensor mat 1 made of an urethane rubber and configured to be waterproof and dustproof; a signal processor 5 is configured inside a signal processing box 4 configured to be waterproof and dustproof; both are connected by a coaxial cable 3, and the signal of an intruder detected by the piezoelectric sensor 2 is transmitted to the reporting apparatus 5. The apparatus is durable and is not directly exposed to rain, and since it also has secrecy, the highly reliable apparatus can be achieved. COPYRIGHT: (C)2008,JPO&INPIT
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