Data processing: measuring – calibrating – or testing – Measurement system – History logging or time stamping
Reexamination Certificate
2006-12-22
2010-06-29
Wachsman, Hal D (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system
History logging or time stamping
C702S042000, C702S189000
Reexamination Certificate
active
07747415
ABSTRACT:
A system includes a structure and a circuit. The circuit is mounted to the structure. The circuit includes a sensor, a non-volatile memory, and a voltage sensitive switch. The memory and the voltage sensitive switch are connected for recording an event sensed by said sensor. The recording only uses power derived from the sensor. One embodiment of the circuit includes a processor connected for receiving a signal derived from the sensor. In this embodiment the non-volatile memory is connected to the processor for receiving and storing data derived from the signal. In one embodiment a first energy storage device is connected to receive energy from the sensor. The voltage sensitive switch is connected for releasing energy from the first energy storage device when energy stored in the first energy storage device exceeds a threshold. The processor and the non-volatile memory are connected for receiving power from the released energy.
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Arms Steven W.
Churchill David L.
Hamel Michael J.
Martin Frederic P.
Townsend Christopher P.
Leas James Marc
Microstrain, Inc.
Suglo Janet L
Wachsman Hal D
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