초록 ▼

A remote tracking device for use in a remote tracking system is described. The remote tracking device includes a positioning system receiver, such as GPS, operable to receive signals indicative of the location of the remote tracking device, a cellular transceiver operable to communicate with the cen

A remote tracking device for use in a remote tracking system is described. The remote tracking device includes a positioning system receiver, such as GPS, operable to receive signals indicative of the location of the remote tracking device, a cellular transceiver operable to communicate with the central monitoring center, and a processor connected to the positioning system receiver and the cellular transceiver, the processor operable to monitor at least one environmental condition for the remote tracking device, and to adjust the frequency of an operation of the remote tracking devices based on the at least one environmental condition. The environmental condition may include the devices rate of movement, proximity to an area of interest, time of day, or other condition in response to which it would be desirable to alter the frequency of operation of the remote tracking device.

대표청구항 ▼

What is claimed is: 1. A remote tracking device for use in a remote tracking system; the remote tracking device comprising: a positioning system receiver operable to receive signals indicative of the location of the remote tracking device; a wireless transceiver operable to communicate with the cen

What is claimed is: 1. A remote tracking device for use in a remote tracking system; the remote tracking device comprising: a positioning system receiver operable to receive signals indicative of the location of the remote tracking device; a wireless transceiver operable to communicate with the central monitoring center; and a processor connected to the positioning system receiver and the wireless transceiver, the processor operable to monitor the proximity of the remote tracking device to an area of interest, and to dynamically adjust the frequency of an operation of the remote tracking device based on the proximity to the area of interest. 2. The remote tracking device of claim 1 wherein the operation is location determination. 3. The remote tracking device of claim 1 wherein operation is data transmission. 4. The remote tracking device of claim 1 wherein the operation is both location determination and data transmission. 5. The remote tracking device of claim 1 wherein the area of interest is a boundary of a geo-zone. 6. The remote tracking device of claim 1 wherein the area of interest is a person. 7. The remote tracking device of claim 1 wherein the positioning system receiver and/or the wireless transceiver are powered down when not in use. 8. A method operating a remote tracking device, the remote tracking device including a positioning system engine, a wireless transceiver and a processor, the processor able to communicate with the positioning system engine and wireless transceiver to produce location information for the remote tracking device and send the location information to a monitoring center; the method comprising: tracking the position of the remote tracking device relative to a location of interest using the processor; and determining a frequency for performing an operating function based on the relative position of the remote tracking device to the location of interest. 9. The method of claim 8 wherein the operation is location determination. 10. The method of claim 8 wherein operation is data transmission. 11. The method of claim 8 wherein the operation is one or more operation selected from the group of: location determination, data transmission, wearer feedback, alert generation, and alarm generation. 12. The method of claim 8 further comprising adjusting the frequency of performing the operation based on the rate of movement of the remote tracking device. 13. The method of claim 8 wherein the location of interest is a boundary of a geo-zone. 14. The method of claim 8 wherein the positioning system engine and the wireless transceiver are powered down when not in use. 15. A remote tracking device for use in a remote tracking system; the remote tracking device comprising: a cellular transceiver; a positioning system receiver operable to receive signals indicative of a location of the remote tracking device; and a processor connected to the positioning system receiver and the cellular transceiver, the processor operable to generate status information for the remote tracking device and to store location information derived from the signals indicative of a location and the status information in a memory, the processor further able to monitor the compliance of the remote tracking device to a rule set in the remote tracking device, and to adjust the frequency of data transmission from the remote tracking devices based on the compliance to the rule set. 16. The remote tracking device of claim 15 wherein multiple location information and status information data sets are stored in memory before being transmitted as a batch by the cellular transceiver. 17. The remote tracking device of claim 15 wherein the remote tracking device is operable to adjust the frequency of data transmission based on environmental conditions for the remote tracking device. 18. The remote tracking device of claim 15 wherein an environmental condition is the remote tracking device's rate of movement. 19. The remote tracking device of claim 15 wherein an environmental condition is the strength of the cellular signal received by the remote tracking device. 20. The remote tracking device of claim 15 wherein the rule set includes rules regarding the location of the remote tracking device at particular times.