Portable Sensor Navigation Solutions for Resource-Constrained Tracking
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Solution Overview
Problem
Existing navigation solutions for portable devices often require a trade-off between resource expenditure and refinement, with more accurate solutions consuming more resources and less accurate solutions being less complete, making it challenging to provide efficient tracking of user activity across varying conditions.
Innovation Solution
A method and system that utilize a portable sensor device to derive multiple navigation solutions by processing sensor data under different conditions, allowing for a less refined solution with reduced resource expenditure and a more refined solution with greater accuracy, leveraging both self-contained motion sensor data and absolute navigation information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a more complete and accurate navigation solution is provided, then navigation precision is improved, but resource consumption increases
Solution Approach 1:
The patent divides the navigation solution into multiple levels: a first navigation solution using only self-contained motion sensor data (low resource consumption) and a second navigation solution that integrates absolute navigation information (high accuracy). The system segments the processing conditions and sensor data sources to provide differentiated navigation solutions based on resource availability and accuracy requirements.
Solution Approach 2:
The system dynamically adjusts the navigation solution based on processing conditions. When resources are limited, it provides the first navigation solution; when resources are abundant and absolute navigation information is available, it provides the refined second navigation solution. This dynamic adaptation resolves the contradiction by making the system flexible rather than fixed.
2Measurement precision
If a more refined navigation solution is derived, then navigation accuracy is improved, but processing time increases
Solution Approach 1:
The system performs preliminary processing by deriving the first navigation solution using only self-contained motion sensor data, which can be done quickly without external resources. This preliminary solution provides immediate navigation capability, and the more time-consuming second navigation solution is derived only when additional resources and time are available, thus reducing the critical processing time while maintaining the option for higher accuracy.
3Use of energy by moving object
If self-contained motion sensor data is used exclusively, then resource consumption is reduced, but navigation completeness deteriorates
Solution Approach 1:
The system implements partial action by using only self-contained motion sensor data for the first navigation solution when resources are constrained, accepting reduced completeness. When resources are abundant, it performs excessive action by integrating absolute navigation information to achieve complete and refined navigation solutions. This partial/excessive approach allows the system to navigate successfully with minimal resources while having the capability for complete navigation when needed.
Data Source
AI summary
Systems and methods are disclosed for providing a plurality of navigation solutions using a portable sensor device associated with a user. Motion sensor data may be used to derive a first navigation solution using the obtained sensor data under a first set of processing conditions navigation solution and to derive at least a second navigation solution using the sensor data under a second set of processing conditions, wherein the second navigation solution is refined as compared to the first navigation solution. As such, the second navigation solution may represent a more accurate or more complete solution, with the first navigation solution may represent a reduced expenditure of resources. The system includes the portable sensor device and optionally may include an auxiliary device associated with the user and/or remote processing resources. The functions associated with deriving the first and second navigation solutions may be performed by any one or any combination of the portable sensor device, the auxiliary device and/or the remote processing resources.