Temperature sensor and temperature measuring system using the temperature sensor
US5735604A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1996 |
| Grant date | Apr 7, 1998 |
| Priority date | — |
| Expiry date | Jul 18, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/2039
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a sensor unit and a temperature measuring system that includes the sensor unit for the contactless determination of the object temperature (T.sub.v) of at least a part of an object. The sensor unit is placed near the object and includes a first and second plate. A temperature-sensitive sensor is disposed on each plate to produce first and second sensor signals which represent the temperature of the first and second plates, respectively. The system also includes a control unit which processes the first and second sensor signals in combination for determining the object temperature (T.sub.v). Preferably, the control unit employs a Kalman filter. Also, the temperature measuring system is applied to an image reproduction machine to determine the temperature of a roller or belt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.