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| Motion Detector for USPS |
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General
This device was designed and mass produced for the United States Postal Office and
is part of a vehicle identification and location system.
Technical
This circuit contains a highly sensitive motion detector whose output is processed
by an 8 pin embedded microcontroller which implements a custom filtering algorithm
that reliably declares motion in a variety of deployment situations (parked with
engine running versus actual driving). The output is used to enable power to a
cellular data link and GPS based vehicle tracking system. The circuitry includes
automotive regulators and surge supression devices to ensure reliable operation
in an automotive environment.
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