Thermopile sensor for radiation thermometer or motion detector

US6203194A · kind A · utility

Assignee

• The Braun Corporation · DE

Inventors

• Frank Beerwerth · Runkel, DE
• Bernhard Kraus · Solms, DE

Key dates

• Filing date: Nov 16, 1998
• Grant date: Mar 20, 2001
• Expiry date: Nov 16, 2018

Classification

• Technology area (CPC G): Physics
• CPC primary: G01P13/00
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention is directed to a thermopile sensor and in particular to a radiation thermometer or a motion detector with a thermopile sensor. The thermopile sensor includes a thermopile supported in a housing. The thermal capacity of the cold and hot junctions of the thermopile including its supporting structure and the thermal conductivity of the supporting structure are mutually coordinated such that a change in the housing's temperature produces a change of equal magnitude in the cold and hot junctions' temperature, that is, no temperature gradients occur within the thermopile.