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:
Apr. 01, 2025
Filed:
Nov. 15, 2021
Honda Motor Co., Ltd., Tokyo, JP;
Ngk Spark Plug Co., Ltd., Nagoya, JP;
Akitsugu Ikeda, Tokyo, JP;
Michinori Tani, Tokyo, JP;
Yuzo Higuchi, Nagoya, JP;
Satoru Abe, Nagoya, JP;
HONDA MOTOR CO., LTD., Tokyo, JP;
NITERRA CO., LTD., Nagoya, JP;
Abstract
A sensor system includes a sensor element to which a control current is inputted, a DA converter to output the control current, and a control part configured to generate a control current instruction value and input the control current instruction value to the DAC, and further includes an instruction value generation part to sequentially generate an inspection current instruction value to be inputted to the DAC instead of the control current instruction value, an inspection current detection part to detect an inspection current value of an inspection current, an expected value calculation part to calculate an inspection current expected value, a difference value acquisition part to acquire a difference value between the inspection current value and the inspection current expected value, and a failure detection part to detect a failure of a bit in the DA converter, by frequency analysis of a temporal change of the difference value.