Position sensor with integrated signal-conditioning electronics on a printed wiring board
US6313624A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1998 |
| Grant date | Nov 6, 2001 |
| Priority date | — |
| Expiry date | Nov 27, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D11/245
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A position sensor, such as a rotary position sensor, includes the signal-conditioning electronics in the housing. The signal-conditioning electronics are disposed on a printed wiring board, which is assembled with another printed wiring board including the sensor windings to provide a sub-assembly. A mu-metal shield is interposed between the printed wiring boards to prevent magnetic interference. The sub-assembly is disposed in the sensor housing adjacent to an inductor board which turns on a shaft. The inductor board emanates an internally or externally generated excitation signal that induces a signal in the sensor windings. The induced signal represents the rotary position of the inductor board relative to the sensor winding board.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.