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. 05, 1988
Filed:
Nov. 27, 1986
Gary M Trachier, Hartland, VT (US);
James S Morse, Bradford, VT (US);
Abstract
A device is disclosed for accurately measuring temperature electronically, having a resistance-type sensor, such as a thermistor, used with a constant current to develop a voltage thereacross. Operational amplifier circuits provide a linear relationship between sensor voltage and resistance. The sensor's calculated resistance is used in a microprocessor to solve a log-polynomial equation relating resistance to temperature. Software corrections compensate for temperature-related variations in the circuitry, and a keyboard permits entry of the polynomial coefficients relating the sensor's output to the measured temperature, to allow interchangeability of sensors. The components are packaged in a compact, waterproofed container to provide a rugged, portable instrument usable in extremes of climatic conditions and capable of maintaining high accuracy over a wide temperature range.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile