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. 19, 2019
Filed:
Jan. 28, 2013
Philips Lighting Holding B.v., Eindhoven, NL;
Gianluca Monaci, Eindhoven, NL;
Ashish Vijay Pandharipande, Eindhoven, NL;
PHILIPS LIGHTING HOLDING B.V., Eindhoven, NL;
Abstract
According to the invention, a PIR sensor system () comprises a first PIR sensor () associated with a first sensing region () and a second PIR sensor () associated with a second sensing region (). The first and second sensing regions partially overlap and are divided into detection cells (-) and (-). Each detection cell is represented by predetermined characteristics of first and second output signals, which signals are based on input signals from first and second sensing elements (-) of each PIR sensor. Thereby different detection cells are encoded by a certain combination of signal characteristics (amplitude and sign) of the first and second output signals. Further, the PIR sensor system comprises a processing unit () configured to associate the characteristics of the first and second output signals with one of the detection cells for determining in which of the detection cells a heat source is positioned. The invention is advantageous in that production costs of the PIR sensor system are reduced. A calibration method for identifying the correspondence between the detection cells and the output signals at installation is also provided.