Slight motion detecting device
US5717611A · kind A · utility
21Cited by
12References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1994 |
| Grant date | Feb 10, 1998 |
| Priority date | — |
| Expiry date | Oct 7, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2217/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A slight motion detecting device includes a angular velocity sensor, a low pass filter, a high pass filter, an amplifier, and a CPU. The CPU differentiates an output from the angular velocity sensor so as to obtain an angular acceleration, and determines that a peak of the acceleration is obtained at the time at which the sign of the acceleration is changed, and further, calculates a zero level detection value of the angular velocity, from the peak, thereby the output of the angular velocity sensor is corrected in accordance with the zero level detection value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.