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:
Mar. 19, 1996
Filed:
Mar. 01, 1994
Carl R Vogt, Raleigh, NC (US);
Borg-Warner Automotive, Inc., Sterling Heights, MI (US);
Abstract
A pressure sensing oscillator (12) and temperature sensing oscillator (14) each produce digital, oscillating signals having frequencies varying with respect to the pressure and temperature, respectively, sensed by each. The signals are input into a temperature compensation circuit (16) which effects a temperature compensation of the pressure signal in accordance with the digital temperature signal. The temperature compensated signal is then input into a microprocessor (18) which filters the signal and generates an output signal based on calibration values stored in an EEPROM. The resulting output signal represents a compensated, calibrated pressure signal. The format for the output signal is a pulse width modulated (PWM) signal having a percent modulation indicative of the temperature compensated, calibrated pressure.