Torque sensor having period detection means
US6622576B1 · kind B1 · utility
12Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1999 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Aug 31, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L3/104
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A torque sensor is provided with a coil whose inductance changes in accordance with variation in torque acting on an object. The torque is detected on the basis of the inductance of the coil. Specifically, the torque sensor includes a first oscillation circuit for detecting the inductance of the coil and for oscillating a signal having a period corresponding to the detected inductance. The period of the signal generated by the first oscillation circuit is detected by a period detection section. A torque detection section detects the torque on the basis of the period detected by the period detection section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.