Location Receiver Circuit Periodic Activation for Power Reduction
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Solution Overview
Problem
GPS-enabled electronic devices face challenges in providing accurate location information while minimizing power consumption, especially in small devices like wearables, due to the high energy consumption of Global Navigation Satellite System (GNSS) modules.
Innovation Solution
An electronic device with a receiver circuit to obtain location-related information from external devices and a controller to determine the device's location, then deactivate the receiver circuit to conserve power, allowing adaptive adjustment of the location identification period based on context information and user settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If GPS module is continuously activated to provide accurate location information, then location accuracy is improved, but power consumption increases
Solution Approach 1:
The GPS receiver operates periodically rather than continuously. The controller activates the GPS receiver at specific intervals to acquire location information, then deactivates it to conserve power. This periodic operation mode maintains acceptable location accuracy while significantly reducing power consumption compared to continuous operation.
Solution Approach 2:
The system uses feedback from location change detection to control GPS receiver operation. When the device detects that its location has changed beyond a threshold, it activates the GPS receiver to obtain updated location information. This feedback mechanism ensures location accuracy is maintained only when necessary, reducing unnecessary power consumption.
2Loss of time
If GPS module operates frequently to provide real-time location updates, then location information freshness is improved, but battery life deteriorates
Solution Approach 1:
The system implements periodic location checking with variable intervals. The GPS receiver is activated at predetermined intervals to update location information, balancing freshness requirements with power conservation. The interval between activations can be adjusted based on application needs and battery status.
Solution Approach 2:
The system dynamically adjusts the operation frequency of the GPS receiver based on real-time conditions. When location changes are detected or applications require frequent updates, the receiver operates more frequently. When stationary or power is constrained, operation frequency decreases, optimizing the balance between information freshness and battery life.
3Speed
If receiver circuit remains active to quickly acquire location data, then location acquisition speed is improved, but power consumption increases
Solution Approach 1:
The receiver circuit is activated periodically rather than remaining continuously active. Each activation period is optimized to acquire location data quickly, then the circuit is deactivated. This approach maintains acceptable acquisition speed for periodic updates while avoiding the continuous power consumption of constant operation.
Solution Approach 2:
The system performs preliminary actions to prepare for quick location acquisition when needed. Location data is cached from previous GPS fixes, and the system prepares to rapidly reacquire signals when activation occurs, minimizing the actual active reception time required while maintaining responsiveness.
Data Source
AI summary
An electronic device and method for identifying location information are provided. The electronic device may include a receiver circuit for receiving location-related information from external devices, and a controller. The controller may implement the method, including controlling the receiver circuit to obtain the location related information from the external devices, determining the location of the electronic device based on the received location information, and deactivating the receiver circuit based on the determination result.