Temperature compensated tilt sensor
US5680708A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 16, 1996 |
| Grant date | Oct 28, 1997 |
| Priority date | — |
| Expiry date | Jan 16, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C9/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A new tilt sensor system is disclosed which provides substantial temperature independence and is very inexpensive to build and to operate. The apparatus is made up of a first source of a first alternating signal having an output impedance Rs1 and a second source of a second alternating signal which is equal in magnitude and 180 degrees out of phase with the first alternating signal, with the source of the second alternating signal having an output impedance Rs2. Also included is a tilt sensor having a first input terminal coupled to receive the first alternating signal, a second input terminal coupled to receive the second alternating signal, and an output terminal which provides an output signal in response to the first alternating signal and the second alternating signal. In the preferred mode, the tilt sensor has an impedance G1 between the first terminal and the output terminal and an impedance G2 between the second terminal and the output terminal. In addition, Rs1=Rs2 and Rs1 is substantially smaller in magnitude than G1+G2!.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.