Low power remote asset monitoring

Communications: electrical – Condition responsive indicating system – With particular coupling link

Reexamination Certificate

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Details

C340S426190, C340S568100, C340S539100, C340S540000, C340S870030, C340S870030, C342S457000, C705S022000

Reexamination Certificate

active

06919803

ABSTRACT:
Arrangement for monitoring an asset including an interior sensor system arranged on the asset to obtain information about contents in the interior of the asset, a location determining system arranged on the asset to monitor the location of the asset and a communication system arranged on the asset and coupled to the interior sensor system and the location determining system. The communication system operatively transmits the information about the contents in the interior of the asset and the location of the asset to a remote facility. The interior sensor system may include at least one wave transmitter arranged to transmit waves into the interior of the asset and at least one wave receiver arranged to receive waves from the interior of the asset. A processor may be provided to compare waves received by the wave receiver(s) at different times or analyze the waves received by the wave receiver(s).

REFERENCES:
patent: 4750197 (1988-06-01), Denekamp et al.
patent: 5917433 (1999-06-01), Keillor et al.
patent: 5969595 (1999-10-01), Schipper et al.
patent: 6069570 (2000-05-01), Herring
patent: 6236911 (2001-05-01), Kruger
patent: 6429810 (2002-08-01), De Roche
patent: 6437702 (2002-08-01), Ragland et al.

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