| 摘要 |
Portable Battery operated asset mount GPS tracking apparatus, having a processor, GPS receiver and a satellite or cellular modem. Incorporated with a low power consumption RF transceiver, the transceiver is designed to communicate at time interval with a home base station RF transceiver unit, located within the communication range of the GPS tracking unit. When the GPS unit is present within communication range of home base unit, the GPS unit's receiver, satellite or cellular modem power circuitry is in "Off" position. If and when a subject or asset carrying GPS unit, moves out of communication range from home base unit, the GPS unit transceiver circuitry within a predetermined time detects RF communication signal loss, and "Power's On" GPS tracking unit receiver and satellite or cellular modem circuitry. The method provides user automatic asset movement tracking, and conserves GPS unit battery consumption, and provides longer period of portable GPS unit operation. |
