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, 2002
Filed:
Jun. 16, 2000
Joseph Tyckowski, Clawson, MI (US);
Meritor Light Vehicle Technology, LLC, Troy, MI (US);
Abstract
A vehicle closure member has a low cost object detection circuit, which utilizes a number of simple circuit elements. Essentially, a present characteristic of the vehicle is compared to a past state characteristic. The difference between those two values is taken and compared to a limit. If the limit is exceeded then an object detection is indicated. Since the detection is based upon actual readings the circuit is adapted to individual system dynamics. The present invention utilizes a pair of low pass filters, a summing amplifier and a comparator along with one threshold circuit to achieve this function. The complete circuit utilizes a second threshold consideration along with an AND gate. In total, a very low cost control circuit which provides very accurate results is provided.