Dual-IC GNSS Positioning Control for Lower Power Consumption
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Solution Overview
Problem
Existing satellite positioning devices with dual GNSS reception circuits suffer from high power consumption, leading to reduced battery life due to increased operational demands.
Innovation Solution
A positioning device with two integrated circuits (ICs) that selectively switch between active and inactive states based on battery level conditions, optimizing power usage by integrating RF, conversion, and baseband processing units to extend battery life while maintaining accurate synchronization and positioning capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If two GNSS reception circuits operate simultaneously to reduce positioning time, then positioning speed is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic operation mode switching where the system can transition between single-circuit operation (power-saving mode) and dual-circuit operation (high-performance mode). The control unit dynamically activates or deactivates the second GNSS reception circuit based on positioning requirements, enabling adaptive performance optimization without constant high power consumption.
Solution Approach 2:
The system employs periodic switching between different operational states, alternating between energy-efficient single-circuit operation and accelerated dual-circuit operation. This periodic activation allows the system to achieve fast positioning periodically while maintaining low average power consumption during normal operation.
2Measurement precision
If dual GNSS reception circuits operate simultaneously, then positioning accuracy is improved, but battery life is reduced
Solution Approach 1:
The system dynamically adjusts its operational configuration by switching between single-circuit and dual-circuit modes based on positioning accuracy requirements. When high precision is needed, both circuits operate; when standard precision suffices, only one circuit operates, thereby extending battery life while maintaining necessary positioning accuracy.
3Productivity
If the second GNSS reception circuit is always active, then positioning performance is improved, but power consumption increases
Solution Approach 1:
The patent segments the GNSS reception functionality into two independent circuits that can operate independently or together. The control unit selectively activates only the necessary segment (one or both circuits) based on current positioning demands, avoiding unnecessary power consumption from always-active configuration.
Solution Approach 2:
The system implements periodic activation of the second reception circuit rather than continuous operation. This allows the system to achieve enhanced positioning performance periodically when needed while consuming minimal power during standard operation, optimizing the balance between performance and energy usage.
Data Source
AI summary
A positioning device, wherein a first integrated circuit includes a first reception unit converting a first satellite signal from a satellite into a first intermediate frequency signal, a first conversion unit converting the first intermediate frequency signal into a first baseband signal, a first baseband processing unit processing the first baseband signal, and a first control unit, a second integrated circuit includes a second reception unit converting a second satellite signal from the satellite into a second intermediate frequency signal, a second conversion unit converting the second intermediate frequency signal into a second baseband signal, and a second baseband processing unit processing the second baseband signal, and the first control unit switches the second reception unit, the second conversion unit, and the second baseband processing unit from an off state to an on state.