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US 5,691,697 AGranted
Security system
AssigneeKidde Technologies, Inc.
InventorsCarlos E. Carvalho, John P. Osborne, Donald O. Hallee
Life of this patent
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AssigneeKidde Technologies, Inc.
InventorsCarlos E. Carvalho, John P. Osborne, Donald O. Hallee
Estimating the term…
A security system includes a pressure sensing circuit for generating an electrical signal in response to changes in pressure and a signal processing circuit, connected to receive the electrical signal, for determining whether the electrical signal represents an intrusion pattern. A pressure sensing circuit generates an electrical signal in response to changes in pressure and a trigger circuit for determining whether an intrusion has occurred by determining whether a peak of the electrical signal has an amplitude that exceeds a floating amplitude threshold, wherein the floating amplitude threshold compensates for ambient noise in the enclosed area. A monitor mode measures intrusion data in a specific enclosed area and determines security system thresholds in accordance with the measured intrusion data.
A security system comprising:
A security system comprising:
A method of detecting intrusions comprising:
A method of determining security system thresholds, comprising:
Dependencies are inferred from the claim text.