Communications: electrical – Condition responsive indicating system – With particular system function
Reexamination Certificate
2006-07-28
2009-11-24
Crosland, Donnie L (Department: 2612)
Communications: electrical
Condition responsive indicating system
With particular system function
C340S511000, C340S514000, C340S501000, C340S628000
Reexamination Certificate
active
07623028
ABSTRACT:
A sensor unit includes at least one sensor configured to measure an ambient condition. The controller can be configured to receive instructions, to report a notice level when the controller determines that data measured by the at least one sensor fails a report threshold test corresponding to a report threshold value. The controller can also be configured to obtain a plurality of calibration measurements from the at least one sensor during a calibration period and to adjust the threshold based on the calibration measurements. The controller can be configured to compute a first threshold level corresponding to background noise and a second threshold level corresponding to sensor noise, and to compute the report threshold value from the second threshold. In one embodiment, the sensor unit adjusts one or more of the thresholds based on ambient temperature.
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Crosland Donnie L
Knobbe Martens Olson & Bear LLP
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