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SOLAR POWERED LIGHT AND ALARM SYSTEM

  • US 20110260880A1
  • Filed: 04/21/2010
  • Published: 10/27/2011
  • Est. Priority Date: 04/21/2010
  • Status: Active Grant
First Claim
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1. A solar powered light and alarm system comprisinga housing having a planar back surface and a hemispheric front surface, said front surface further having an aperture there through and a lens seated within said aperture;

  • a power distribution circuit, said power distribution circuit further comprisinga photovoltaic cell affixed to said front surface so as to be substantially horizontal,a rechargeable battery within said housing electrically connected to said photovoltaic cell for receiving and storing an electrical charge generated thereby,a first switch for disconnecting said battery from said system,a passive infrared (PIR) sensor seated in said aperture and behind said lens, said PIR sensor identifying changes in ambient infrared radiation indicative of movement;

    a circuit controller within said housing electrically connected to said PIR sensor and to said power distribution circuit;

    a light source seated in said aperture and electrically connected to said circuit controller;

    a speaker and speaker driver within said housing electrically connected to said circuit controller via a second switch for providing an audible alarm;

    whereby said circuit controller activates said light source and said audible alarm on receipt of a signal from said PIR sensor indicating that motion has been sensed.

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