Temperature sensor probe

• US 8,157,441 B2
• Filed: 11/20/2008
• Issued: 04/17/2012
• Est. Priority Date: 11/22/2007
• Status: Expired due to Fees

• Current Assignee: Azbil Corporation (Azbil BioVigilant Incorporated)
• Original Assignee: Yamatake Corporation
• Inventors: Kinugasa, Seiichiro, Kato, Atsushi
• Primary Examiner(s): Verbitsky, Gail
• Application Number:
  US12/274,480
• Publication Number:
  US 20090135881A1
• Time in Patent Office: 1,244 Days
• Field of Search: 374/161, 374/162, 374/141, 374/120, 374/121, 374/130, 374/131, 374/132, 374/E11.018, 356/43, 116/216
• US Class Current: 374/161
• CPC Class Codes: G01K 11/3213 using changes in luminescence, e.g. at the distal end of the fibres

Abstract

To provide a temperature sensor probe that can take stable measurements, and a manufacturing method thereof. The temperature sensor probe related to the present invention is a temperature sensor probe for measuring temperature using a fluorescent substance that changes fluorescent characteristics depending on temperature. Then, a powdered fluorescent substance, a guide wave route member that propagates excitation light, which is irradiated on the fluorescent substance, and fluorescent light, which is produced by the fluorescent substance, are provided. Further, the particle size of the powdered fluorescent substance is confined to the range of 60 to 100 μm.

Claims

1. A temperature sensor probe for measuring temperature using a fluorescent substance that changes fluorescence characteristics based on temperature, comprising:

a powder fluorescent substance, and

a guide wave route member that propagates excitation light, which irradiates said fluorescent substance, and fluorescent light, which is generated by said fluorescent substance, wherein the particle size of said powder fluorescent substance is in the range of 60 to 100 μ

m,

wherein characteristics change in the fluorescent substance that are indicative of the measured temperature,

wherein the excitation light irradiated on said fluorescent substance is light from a yellow LED.

2. The temperature sensor probe according to claim 1, wherein said fluorescent substance is a ruby.

3. The temperature sensor probe according to claim 1, wherein the excitation light irradiated on said fluorescent substance comprises a wavelength of approximately 600 nm.

4. The temperature sensor probe according to claim 1, wherein the excitation light irradiated on said fluorescent substance comprises a core wavelength of 590 nm.