Measuring device for determining the position of a control element with temperature related measurement errors correction
US6265866A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2000 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Apr 5, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D2205/73
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A measuring device for determining the position of a control element, such as a throttle valve in which a temperature-resistant Hal sensor (4) cooperates with a permanent magnet (2), which is connected to the control element by a spindle (3), in order to obviate the need for a conventional mechanical potentiometer. By virtue of the Hall effect, the Hall sensor (4) produces during movement of the control element and thus of the position of the permanent magnet (2) relative to the Hall sensor (4), an output signal (U.sub.a) that is preferably linearly proportional to the movement of the control element. The Hall sensor (4) is programmed to correct temperature, related measurement errors in the permanent magnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.