Loading patent…
AssigneeInteractive Technologies, Inc.
InventorsKeith D. Kuhnly, Paul G. Saldin
Estimating the term…
A detection system and method are capable of reducing the occurrence of false alarms and detection failures by compensating for variations in the amplitude of a detection signal generated by a PIR sensor. An adaptive threshold can be used that varies according to ambient temperature of the detection area and the frequency of the detection signal. Comparison of the detection signal to the adaptive threshold allows compensation for temperature-and/or frequency-induced variations in detection signal amplitude. The adaptive threshold can be configured for standard detection area conditions or calibrated for conditions at the installation site. Relative measurement and adaptive sampling techniques also can be used to compensate for the presence of low frequency shifts in the detection signal. Such techniques can provide an accurate representation of signal amplitude relative to a threshold amplitude despite differences in absolute signal magnitude. The use of an adaptive sampling rate that increases with the onset of a potential intruder event contributes to power conservation in the detector.
A detection system comprising:
A detection method comprising:
A method for calibrating a detection system, the method comprising:
A method for calibrating a detection system, wherein the detection system includes an infrared sensor that generates a detection signal indicative of a level of infrared radiation within a detection area, the method comprising:
A detection system comprising:
A detection system comprising:
A detection system comprising:
A detection method comprising:
Dependencies are inferred from the claim text.