Patent ID: 8337079
Filing Date: 2012-12-25
Classification: G01K

Abstract:
1. A fluorescent temperature sensor for producing a temperature signal from fluorescent light of a fluorescent material that has been optically stimulated, comprising: a light projecting module having a light projecting element projecting light at the fluorescent material and an auxiliary light receiving element receiving light that is emitted by the light projecting element; a light conveying medium conveying light between the light projecting module and the fluorescent material; a light receiving module having a light receiving element receiving light emitted from the fluorescent material; a signal processing circuit generating a temperature signal from an output signal of the light receiving element; a second light conveying medium between the light receiving module and the fluorescent material; and an identifying unit identifying a location of a failure in the sensor based on both an output signal of the auxiliary light receiving element and the output signal of the light receiving element.