Satellite Navigation Receiver Velocity-Based State Switching
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Solution Overview
Problem
Conventional GPS receivers have high power consumption due to their inability to efficiently manage power usage across different operation states, which affects their accuracy and efficiency, especially when tracking multiple satellites.
Innovation Solution
A satellite navigation receiver with a processing unit and power management interface that switches between multiple operation states based on velocity, including a sleep state to reduce power consumption, and adjusts time durations of working and sleep states to improve positioning accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the GPS receiver enables all acquisition channels and tracking channels to track multiple satellites, then the positioning accuracy is improved, but the power consumption increases
Solution Approach 1:
The patent applies dynamics by making the operation state of the GPS receiver adjustable and velocity-dependent. The processing unit dynamically switches between different operation states (first operation state with all channels enabled for high accuracy, second operation state with reduced channels for low power consumption) based on the detected velocity, allowing the system to adapt its resource usage to current operational requirements
Solution Approach 2:
The patent changes the operational parameters (number of enabled channels, operation state) based on velocity parameter detection. When velocity exceeds a threshold, the system transitions from a power-intensive mode with all channels enabled to a power-saving mode with reduced channel activity, directly linking parameter changes to the velocity condition
2Use of energy by moving object
If the GPS receiver switches between operation states based on velocity, then the power consumption is reduced, but the complexity of the system increases
Solution Approach 1:
The patent implements self-service by enabling the GPS receiver to automatically detect its own velocity and autonomously switch between operation states without external intervention. The processing unit performs velocity detection and automatically determines the appropriate operation state, making the system self-regulating and reducing the need for complex external control mechanisms
3Measurement precision
If the GPS receiver uses multiple operation states with different time durations, then the positioning accuracy is improved, but the loss of time increases
Solution Approach 1:
The patent applies periodic action by implementing cyclic switching between different operation states based on velocity conditions. The system periodically evaluates velocity and transitions between high-accuracy and power-saving modes, creating a rhythmic pattern of operation that balances accuracy requirements with power conservation over time
Data Source
AI summary
A satellite navigation receiver having multiple operation states includes a processing unit and a power management interface. The processing unit is operable for locating the satellite navigation receiver based on multiple satellite signals and operable for setting multiple time durations of the operation states respectively based on a velocity of the satellite navigation receiver. The power management interface coupled to the processing unit is operable for switching the satellite navigation receiver among the operation states according to the time durations.