GPS Tracker Distance Trigger for Power Reduction
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Solution Overview
Problem
Active GPS tracking systems consume unnecessary power by reporting the target's position at predetermined time intervals, even when the target is stationary for extended periods.
Innovation Solution
The system incorporates a distance trigger module with a velocity sensor, accumulator, and comparing unit to calculate and compare moving distance with a user-set reporting distance, generating an interrupt signal only when the target has moved a significant distance, allowing the GPS module to enter sleep mode and reducing power consumption by reporting positions only when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the active GPS reports position at predetermined time intervals, then position monitoring continuity is improved, but power consumption increases
Solution Approach 1:
The system dynamically adjusts the GPS reporting frequency based on detected motion state. When the target is stationary, the GPS module enters sleep mode to reduce power consumption. When the target moves beyond a threshold distance, the system wakes the GPS module to report position, thus adapting the monitoring behavior to actual needs rather than using fixed intervals
Solution Approach 2:
The system changes the operational parameters of the GPS module based on motion detection. By monitoring distance traveled since last report and comparing it against a threshold parameter, the system adjusts the GPS module between active and sleep states, optimizing the balance between monitoring continuity and power consumption
2Measurement precision
If the active GPS continuously monitors position, then position accuracy is improved, but battery life decreases
Solution Approach 1:
Instead of continuous monitoring, the system uses periodic action triggered by motion detection. The GPS module is activated periodically when the target moves beyond a predetermined distance threshold, and remains in sleep mode during stationary periods, extending battery life while maintaining position accuracy when needed
Solution Approach 2:
The system uses the target's own motion to trigger position reporting. The distance trigger module automatically detects when the target has moved sufficiently and activates the GPS module without external intervention, allowing the system to self-regulate based on actual movement conditions
Data Source
AI summary
An active GPS tracking system and method includes a user setting interface for receiving a reporting distance, a distance trigger module, a GPS module and a wireless communication module. The distance trigger module calculates a moving distance of the active GPS tracking system, and generates and sends an interrupt signals to the GPS module to make it enter a working mode when the moving distance is greater than or equal to the reporting distance. Then, the GPS module determines a current position of the active GPS tracking system and determines whether an actual displacement is greater than or equal to the reporting distance to determine if reporting the current position. If the actual displacement is greater than or equal to the reporting distance, the wireless communication module receives the current position from the GPS module, and reports to a monitor center.