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

• Current Assignee: Calvin Ko
• Original Assignee: Gordon Ko, Lance Dean
• Inventors: Ko, Gordon, Dean, Lance
• Granted Patent: US 8,384,556 B2
• Time in Patent Office: Days
• US Class Current: 340/686.1
• CPC Class Codes: F21L 4/08 characterised by means for in situ recharging of the batteries or cells
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G08B 13/19 using infrared-radiation detection systems G08B13/194 takes precedence
• CPC Class Codes: H05B 47/13 by using passive infrared detectors
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

An elliptically housed solar powered intrusion detection/notification device having a flashing LED light source and audible human voice alarm activated by a passive infrared (PIR) sensor motion detector in conjunction with a battery recharged via surface mounted photovoltaic cells, and a control circuit coupled to the light source/alarm, the PIR motion detector and the battery.

Claims

1. A solar powered light and alarm system comprising

a 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 comprising

a 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.

2. The solar powered light and alarm system of claim 1 further comprising a photocell electrically connected to said circuit controller for generating a signal indicative of ambient daylight conditions whereby said circuit controller inhibits operation of said system during daylight hours.

3. The solar powered light and alarm system of claim 1 wherein said lens is a Fresnel lens.

4. The solar powered light and alarm system of claim 1 wherein said lens is made from polyethylene.

5. The solar powered light and alarm system of claim 1 wherein said rechargeable battery provides 1.2 volts.

6. The solar powered light and alarm system of claim 1 wherein said light source is at least one light emitting diode (LED).

7. The solar powered light and alarm system of claim 6 wherein said light source is two LED'"'"'s.

8. The solar powered light and alarm system of claim 7 wherein said two LED'"'"'s comprise a red LED and a blue LED.

9. The solar powered light and alarm system of claim 1 wherein said light source is at least one flashing light emitting diode (LED).

10. The solar powered light and alarm system of claim 1 wherein said circuit controller further comprises a timing element and wherein said controller deactivates said light source and said audible alarms after a period of time has elapsed.

11. The solar powered light and alarm system of claim 1 wherein said audible alarm is a human voice command.