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:
Feb. 26, 2019
Filed:
Jan. 13, 2017
Magna Electronics Inc., Auburn Hills, MI (US);
Roger T. Douglas, Waterford, MI (US);
Qi Tao, Canton, MI (US);
MAGNA ELECTRONICS INC., Auburn Hills, MI (US);
Abstract
A sensing system includes circuitry having a diagnostic interface for a powered sensor. Responsive to sensing signals, the circuitry is operable to produce a DC level that is defined by operating or fault conditions. The fault conditions include an open voltage supply, an open sensor power return signal, open communication signal(s), series resistance in a communication signal, fault resistance to ground on the communication signal and fault resistance to a voltage source on the communication signal. The circuitry includes a fault tolerant interface between a wire harness at an output of the powered sensor and a digital input port of a microprocessor for the purpose of un-ambiguous fault detection when distortion of sensor information occurs or when loss of sensor information occurs, and wherein the microprocessor diagnoses a fault as defined by the DC level of the analog signal monitored at the communication signal input to the microprocessor.