Method and System for Managing a Location Detector

摘要

A portable device, for example an offender monitor, can utilize a location detector, such as a GPS receiver, to provide locational information for the device. The portable device can communicate over a cellular network, for example transmitting location readings over the network. The device can maintain the location detector in a state of reduced energy consumption and activate the receiver when conditions of the cellular environment indicate a high probability of the device moving a noteworthy distance. In various examples, the decision can take into consideration change in signal strength and/or history of cell tower utilization.

主权项

1. An offender monitor comprising:
a battery; a location detector; a radio;
a connection to the radio; andmemory; and processor executable instructions stored in the memory to perform the steps of:
during a first iteration of a time interval, determining a first RF signal strength;during a second iteration of the time interval, determining a second RF signal strength; anddetermining whether to take a location reading with the location detector based on a moving weighted average that utilizes the first RF signal strength and the second RF signal strength.