Temperature sensing module
US5826982A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1996 |
| Grant date | Oct 27, 1998 |
| Priority date | — |
| Expiry date | Jun 14, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J5/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention concerns a sensor module with a hollow mirror (3) at whose focal point a sensor element (4) has been arranged whose output signal is compared with a reference signal and is transformed into a temperature signal in an evaluation circuit (15). The sensor module has a thermopile (6) in whose immediate vicinity a temperature reference element (5) has been arranged; a first pre-amplifier (8, 9), that is capable of being calibrated, amplifies the output signal from the thermopile (6); a second pre-amplifier (10-13) amplifies the output signal from the temperature reference element (5); and a third pre-amplifier (14) is connected into the circuit in the form of a difference amplifier and forms the difference in signal between the outputs from the first pre-amplifier (8, 9) and the second pre-amplifier (10-13).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.