Method and system for remote monitoring and tracking of inventor

Details Method and system for remote monitoring and tracking of inventor Method and system for remote monitoring and tracking of inventor

1996-06-28

1999-03-23

An, Meng-Ai T.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

3952005, 395222, 34082554, G08B 522

Patent

active

058871764

ABSTRACT:
The invention encompasses a system that utilizes radio frequency circuitry in combination with microprocessor devices and specially designed software to provide an improved structure and operation for the monitoring, protection and control of inventory assets. Generally, the system is embodied in a system controller unit, one or more interrogator devices and multiple transponder units. The system controller unit may be a personal computer (PC) based device for effecting the control and monitoring of the system's operation. In addition, the system controller unit serves as a data collection device and as an alarm device. The interrogator device(s) incorporate a transceiver controlled by microprocessor circuitry within the interrogator devices. The transponder units also include a radio transceiver and microprocessor circuitry. The transponder units are attached to a container or item to be monitored and protected. The microprocessor circuit and the memory therein store the transponder identification code and can also contain data on the contents or nature of the container/item to which it is attached. When a transponder receives a RF signal from an interrogator device containing a correct transponder identification code, the transponder unit is enabled for receiving and processing messages. The transponder unit may also respond by sending out its own RF signal which contains an acknowledgment and all available data as requested by the interrogator device.

REFERENCES:
patent: 4691202 (1987-09-01), Denne et al.
patent: 5028918 (1991-07-01), Giles et al.
patent: 5099226 (1992-03-01), Andrews
patent: 5406297 (1995-04-01), Caswell et al.
patent: 5606313 (1997-02-01), Allen et al.

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