The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 07, 1995
Filed:
Apr. 06, 1994
Dieter L Rall, Newport Beach, CA (US);
Luxtron Corporation, Santa Clara, CA (US);
Abstract
A non-contact temperature measuring system and a dual-reference body structure employed therein is described, wherein a moving object whose temperature is to be determined, is passed by first and second reference bodies having a same form factor with respect to the moving object. Each of the reference bodies has a heat flow sensor embedded at the end of a cavity formed in the reference body such that the heat flow sensor primarily responds to radiation heat flow generated by a temperature differential between the moving object and its respective reference body. With the reference bodies thermally isolated and maintained at different temperatures by heaters embedded in the reference bodies, and their respective heat flow sensors properly calibrated, the temperature of the moving object is calculated, by applying the Stefan-Boltzmann law, from the respective temperatures of the first and second reference bodies, and the respective calibrated output voltages of the respective heat flow sensors of the first and second reference bodies.