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:
Dec. 01, 2020
Filed:
Nov. 29, 2016
Metrosol Limited, Paulerspury, GB;
Paul Bramley, Paulerspury, GB;
Metrosol Limited, Paulerspury, GB;
Abstract
The present invention provides a system and method for measuring temperature accurately by measuring Johnson noise. The system comprising a Johnson noise generating resistive sensor element for detecting temperature; signal processing circuitry electrically coupled to the sensor element; and a current injector electrically coupled to the signal processing circuitry and the sensor element, and configured to inject a calibration current into the sensor element; wherein the signal processing circuitry is configured to: receive a composite voltage signal from the sensor element, the composite voltage signal including a voltage signal arising from the Johnson noise generated by the sensor element and a voltage signal arising from the calibration current; extract the Johnson noise voltage signal and the calibration voltage signal from the received composite voltage signal; and determine the temperature of the sensor element based on the extracted Johnson noise voltage signal and on the extracted calibration voltage signal.