Field coverage configurable passive infrared radiation intrusion detection device
First Claim
1. A field coverage configurable passive infrared radiation intrusion detection device comprising:
- a plurality of passive infrared radiation sensors;
an optical element for gathering infrared radiation from different portions of a field and for focusing said infrared radiation onto said plurality of passive infrared radiation sensors; and
an electrical activation/deactivation circuit for selectively activating/deactivating one or more of said plurality of passive infrared radiation sensors thereby configuring the portions of the field covered by said passive infrared intrusion detection device.
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Accused Products
Abstract
One embodiment of a field coverage configurable passive infrared radiation intrusion detection device comprises a plurality of passive infrared radiation sensors. The device also has an optical element for gathering infrared radiation from different portions of a field and for focusing said infrared radiation onto said plurality of passive infrared radiation sensors. An electrical activation/deactivation circuit receives the output of each passive infrared radiation sensor and selectively activates/deactivates one or more of the plurality of passive infrared radiation sensor outputs thereby configuring the portions of the field covered by the passive infrared intrusion detection device. In another embodiment of a field coverage configurable passive infrared radiation intrusion detection device, the height coverage of the device is adjustable in the field. The device comprises a passive infrared radiation sensor, and an optical element spaced apart from the passive infrared radiation sensor by a separation distance, for focusing infrared radiation from a field at a height distance from the optical element. The device further comprises means for changing the separation distance, thereby changing the height distance of the optical element from the field.
44 Citations
19 Claims
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1. A field coverage configurable passive infrared radiation intrusion detection device comprising:
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a plurality of passive infrared radiation sensors; an optical element for gathering infrared radiation from different portions of a field and for focusing said infrared radiation onto said plurality of passive infrared radiation sensors; and an electrical activation/deactivation circuit for selectively activating/deactivating one or more of said plurality of passive infrared radiation sensors thereby configuring the portions of the field covered by said passive infrared intrusion detection device. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A height coverage adjustable passive infrared radiation intrusion detection device comprising:
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a passive infrared radiation sensor; an optical element spaced apart from the passive infrared radiation sensor by a separation distance, for focusing infrared radiation from a field at a height distance from the optical element; means for changing the separation distance, thereby changing the height distance of the optical element from the field. - View Dependent Claims (8, 9, 10)
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11. A field coverage adjustable passive infrared radiation intrusion detection device comprising:
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a plurality of passive infrared radiation sensors; an optical element, spaced apart from the plurality of passive infrared radiation sensors by a separation distance, said optical element for focusing infrared radiation from a plurality of different fields at a height distance from the optical element onto said plurality of passive infrared radiation sensors; means for changing the separation distance thereby changing the height distance of the optical element from the plurality of fields; and an electrical activation/deactivation circuit for selectively activating/deactivating one or more of said plurality of passive infrared radiation sensors thereby configuring the fields covered by said passive infrared intrusion detection device. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification