发明名称 |
PORTABLE EQUIPMENT HAVING ACCELERATION HISTORY RECORDING FUNCTION, AND ACCELERATION SENSOR DEVICE USED FOR THE SAME |
摘要 |
<P>PROBLEM TO BE SOLVED: To provide portable equipment for proving the fact of fall after the event while the portable equipment has a function for detecting the fall of the equipment and recording the history of acceleration until fall collision. <P>SOLUTION: The portable equipment comprises a three-axis acceleration sensor; a fall determining means for judging whether the level of acceleration detected by the acceleration sensor is smaller than a specified value that is smaller than gravity acceleration (1G) or not for all three axes; and a non-volatile semiconductor memory. When the fall determining means determines falling, data related to acceleration detected by the acceleration sensor are recorded in the non-volatile semiconductor memory quickly. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
申请公布号 |
JP2005037300(A) |
申请公布日期 |
2005.02.10 |
申请号 |
JP20030276204 |
申请日期 |
2003.07.17 |
申请人 |
HITACHI METALS LTD |
发明人 |
NODA MASARU;SAITO MASAKATSU |
分类号 |
G01P15/00;G01D9/00;G01P15/18;G11B25/04 |
主分类号 |
G01P15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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