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:
Jan. 18, 2005
Filed:
Sep. 07, 2001
Mike L. Babala, Plymouth, MI (US);
Marc Bolitho, Linden, MI (US);
Jeffrey E. Shaya, Farmington Hills, MI (US);
Thomas Baron, Leimbach, DE;
Mike L. Babala, Plymouth, MI (US);
Marc Bolitho, Linden, MI (US);
Jeffrey E. Shaya, Farmington Hills, MI (US);
Thomas Baron, Leimbach, DE;
Kelsey-Hayes Company, Livonia, MI (US);
Abstract
The reliability of a pressure sensor is improved either by utilization of redundant components. A pair of pressure sensors are mounted upon a single pressure sensor diaphragm. Each of the pressure sensors is connected to one of a pair of signal conditioning circuits. The gain of one of the signal conditioning circuits is a fraction of the gain of the other signal conditioning circuit. The outputs of each of the signal conditioning circuits are compared to a corresponding threshold. If both of the output signals exceed the corresponding threshold, it is determined that a malfunction of the pressure sensor has occured.