| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that an acceleration sensor is large in current consumption and battery-driven portable equipment thereby has an extremely short lifetime. <P>SOLUTION: The acceleration switch including a mass body having a space inside, an arcuate beam which bears the mass body and is arranged surrounding the mass body, and a counter electrode in the space of the mass body has acceleration sensitivity adjusted by varying the volume of the mass body. Consequently, a plurality of acceleration switches each having a single threshold of acceleration sensitivity are prepared in steps of, for example, 0.2G and a multi-sensitivity acceleration switch can be supplied to a user. <P>COPYRIGHT: (C)2013,JPO&INPIT |
