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. 09, 2003
Filed:
Jun. 03, 2002
Richard Stephen Pollack, Boulder, CO (US);
Dale Lee Yones, Boulder, CO (US);
Robert Walter Brown, Medina, OH (US);
The Goodyear Tire & Rubber Company, Akron, OH (US);
Abstract
A method for monitoring pressure with a transponder ( ) capable of measuring temperature data (N ) and pressure data (N ) in an object (e.g., a tire, ( )) and transmitting a data stream (FIG. C) to an external reader/interrogator (106, 400). The transponder includes a memory (238) for storing measurements, calibration data ( ), transponder ID number and the like. Since the transponder combines temperature and pressure information in the “pressure” data, the ratio N /N is a direct indicator of pressure-only, and is also relatively insensitive to transponder power variations. The calibration method employs a calibration chamber ( ) containing reference pressure ( ) and temperature ( ) sensors. The transducer to be calibrated is placed in the chamber and exposed ( ) to a number of predetermined temperatures and pressures (as measured by the reference sensors) at a number of calibration points. At each calibration point, a temperature reading (N ) and a pressure reading (N ) sensed by the transponder are recorded along with the reference temperature and pressure. From these readings and reference measurements the calibration constants (N , m , N /N , m ) are calculated ( ).