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:
Oct. 08, 2013
Filed:
Jun. 23, 2010
Gui Chen, Yueqing, CN;
Dafang Huang, Yueqing, CN;
Gui Chen, Yueqing, CN;
Dafang Huang, Yueqing, CN;
Other;
Abstract
A pyroelectric infrared body sensing switch circuit comprises an amplification circuit, a delay unit, an execution unit, and an infrared detection circuit comprising one or more pyroelectric infrared detection elements. A power unit comprises first and second power circuits. Each of the first and second power circuits receives AC power and supplies DC power through RC voltage reduction, full-wave rectification, filtration, and voltage stabilization. The first power circuit supplies power to the execution unit and the second power circuit supplies power to the infrared detection circuit, the amplification circuit, and the delay unit. A signal outputted from the infrared detection circuit is inputted to the amplification circuit. A signal outputted from the amplification circuit controls the activation of the delay unit. A signal output from the delay unit controls the execution unit. The signal outputted from the infrared detection circuit comprises superposed output signals from the pyroelectric infrared detection elements.