发明名称 |
LOW POWER MOTION DETECTOR |
摘要 |
An energy-efficient acceleration measurement system is presented. The system includes an accelerometer, responsive to acceleration of the system, for providing an accelerometer output signal having a magnitude indicative of at least one component of the acceleration. A motion detector is responsive to the accelerometer output signal, and provides a processor interrupt signal, but only if the magnitude of acceleration reaches a threshold. The processor, responsive to the processor interrupt signal, measures the acceleration with higher accuracy than the motion detector is capable of, but in a way that consumes more power than was needed by the motion detector. |
申请公布号 |
WO2006070272(A2) |
申请公布日期 |
2006.07.06 |
申请号 |
WO2005IB03913 |
申请日期 |
2005.12.30 |
申请人 |
NOKIA CORPORATION;NOKIA INC.;RAKKOLA, JUHA;SALMINEN, JUKKA;KOLI, KIMMO;SALO, TEEMU |
发明人 |
RAKKOLA, JUHA;SALMINEN, JUKKA;KOLI, KIMMO;SALO, TEEMU |
分类号 |
G01P15/00;G01P1/12;G01P15/18;H01H35/14 |
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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