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:
Nov. 19, 2010
Tianfeng Zhao, Shenzhen, CN;
Mingzhi Xzao, Shenzhen, CN;
Lei Qin, Shenzhen, CN;
Hansen Gu, Shenzhen, CN;
Tianfeng Zhao, Shenzhen, CN;
Mingzhi Xzao, Shenzhen, CN;
Lei Qin, Shenzhen, CN;
Hansen Gu, Shenzhen, CN;
Honeywell International Inc., Morristown, NJ (US);
Abstract
A method and apparatus are provided for automatically testing microwave instruction detection modules of a security system. The method includes the steps of detecting intruders within a protected space by monitoring a Doppler output of a signal extraction circuit coupled to a microwave transceiver module, varying a frequency of direct current power pulses applied to the microwave transceiver module, detecting a difference in magnitude of the Doppler output of the signal extraction circuit over the varied frequency and comparing the detected difference with a fault threshold level.