Dynamic Positioning Control for GPS Power and Accuracy Trade-off
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Solution Overview
Problem
Conventional positioning devices require high electrical power consumption for accurate positioning, limiting their usage flexibility and convenience, as they are designed for a single purpose and cannot adapt positioning accuracy based on changing user needs.
Innovation Solution
A positioning device that includes a positioning unit, storage unit, and control units to dynamically adjust positioning conditions based on determined categories and regions, optimizing power usage and accuracy according to the purpose of use by associating position information with categories and adjusting GPS positioning intervals accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If positioning is performed at a large time interval to suppress electrical power consumption, then power consumption is reduced, but positional accuracy deteriorates
Solution Approach 1:
The positioning device dynamically adjusts the positioning time interval based on the determined category of the current position. When the device is in a region requiring high positional accuracy (such as near points of interest), the positioning time interval is shortened. When in regions where power conservation is prioritized, the interval is extended. This dynamic adjustment resolves the contradiction by making the positioning frequency adaptive rather than fixed.
Solution Approach 2:
The invention changes the parameter of positioning time interval based on the category information stored in the storage unit. Different categories correspond to different positioning intervals, allowing the system to optimize between power consumption and positional accuracy by selecting appropriate intervals based on the current contextual category.
2Measurement precision
If positioning time interval is shortened to improve positional accuracy, then positional accuracy is improved, but electrical power consumption increases
Solution Approach 1:
The invention applies different positioning strategies to different spatial locations or categories. High positional accuracy (shorter intervals) is applied locally to specific categories or regions where it is most needed, while other regions use longer intervals to conserve power. This local differentiation resolves the contradiction by avoiding uniform high-frequency positioning across all locations.
Solution Approach 2:
The positioning time interval parameter is changed based on the determined category. The system stores multiple categories with different positioning requirements and adjusts the interval parameter accordingly, allowing optimization of power consumption while maintaining accuracy where necessary.
3Device complexity
If positioning device is designed for a single purpose with fixed positioning interval, then device complexity is reduced, but adaptability deteriorates
Solution Approach 1:
The positioning device achieves multi-functionality by incorporating a storage unit that stores multiple categories with different positioning requirements. The positioning control unit can select and apply different positioning intervals based on the determined category, enabling the single device to adapt to multiple different purposes and scenarios without requiring separate specialized devices.
Solution Approach 2:
The device transitions from a static, fixed-interval positioning system to a dynamic system that can adapt its behavior based on determined categories. This dynamic capability provides versatility across different use cases while maintaining a relatively simple overall device structure.
Data Source
AI summary
A positioning device including: a positioning unit that performs positioning of position information at each time when predetermined positioning conditions are met; a storage unit that stores position information of at least one specified position, in association with a category from among a plurality of types of categories; a position setting unit that sets a specified position from among specified positions stored in the storage unit; a region setting unit that sets a region of a size corresponding to a category to which the specified position set by the position setting unit belongs, in association with the specified position; a region determining unit that determines whether or not position information obtained by the positioning unit belongs to the region set by the region setting unit; and a positioning control unit that changes the positioning conditions of the positioning unit based on determination results determined by the region determining unit.