Dynamic GPS Location Update for Tracking Devices
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Solution Overview
Problem
Current GPS location updating methods on mobile devices consume significant battery power, necessitating a trade-off between accuracy and update frequency.
Innovation Solution
A method that divides an area into static and dynamic regions, allowing for coarse identification and accurate location determination based on predefined events, minimizing battery usage by setting update times according to the shortest time required to reach a region border and geo-locating devices at update time expiration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS location updates are performed frequently to maintain accuracy, then location accuracy is improved, but battery consumption increases
Solution Approach 1:
The service area is divided into multiple regions, and the system transitions from continuous GPS tracking to region-based coarse tracking. The GPS function is segmented into two modes: coarse region identification (low power) and precise location determination (high power, activated only on region border crossing). This segmentation resolves the contradiction by maintaining location awareness through region monitoring while activating precise GPS only when necessary, significantly reducing overall battery consumption while preserving essential location accuracy.
Solution Approach 2:
The system implements periodic GPS updates triggered by region border crossing events rather than continuous updates. The GPS function is activated periodically when the device enters a new region, and deactivated when remaining within the same region. This periodic activation pattern maintains location tracking accuracy while dramatically reducing battery consumption compared to continuous GPS operation.
2Measurement precision
If GPS updates are performed continuously to maintain real-time location tracking, then location tracking accuracy is improved, but battery life decreases
Solution Approach 1:
The system extracts the essential location tracking function from continuous GPS operation by implementing region-based coarse tracking. Instead of continuously determining precise GPS coordinates, the system extracts only the necessary information (region identification) and defers precise location determination to event-triggered moments. This extraction approach extends battery life while maintaining functional location tracking capability.
Solution Approach 2:
The system applies partial action by using coarse region tracking instead of full precise GPS tracking for the entire duration. Precise GPS is activated only partially when region border crossing events occur, rather than continuously. This partial action approach extends battery life while providing sufficient location tracking accuracy for the application's needs.
3Productivity
If the GPS function is activated at high frequency to provide accurate location data, then location update frequency is improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the GPS update frequency based on the device's location state. When the device remains within the same region, GPS updates are deactivated (low frequency). When the device crosses region borders, GPS updates are activated (high frequency). This dynamic adjustment optimizes the balance between location update frequency and power consumption, providing high update frequency only when location changes occur.
Data Source
AI summary
A tracking device is provided and includes a processing unit that is in communication with a networking unit and a memory unit. The memory unit has executable instructions stored thereon, which, when executed, cause the processing unit to control the networking unit to coarsely identify a region currently occupied by a tracked device and determine an accurate location of the tracked device responsive to a predefined event.