| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a theft alarm device capable of exactly giving an alarm at the time of a theft by lifting, while having a comparatively simple constitution. <P>SOLUTION: This device is installed in object equipment. The device is provided with an acceleration sensor 1 for detecting vibration, shock and inclined angle generated in the object equipment as acceleration. When a theft is decided by performing an arithmetic processing for an output of the acceleration sensor 1 in the device, an alarm is given. The device is provided with a decision means 3 for measuring the number of times of the outputs of the acceleration sensor 1 exceeding a prescribed set value during the prescribed measuring time and for deciding the theft when the number of times is more than the prescribed number of times. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
