Indoor Positioning Accuracy via Dynamic Scaling Factor Correction
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Solution Overview
Problem
Existing indoor positioning technologies face inaccuracies due to signal interference and design differences in antennas, circuits, and housing of devices from different brands, leading to inaccurate position acquisition of target devices.
Innovation Solution
A method and apparatus that select a group of N effective devices to calculate a corrected conversion scaling factor, enabling unique intersection of circles or spheres centered on each device, to accurately convert signal intensity into distance and determine the target device's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If signal intensity is used to determine device distance for indoor positioning, then positioning can be implemented without satellite signals, but signal interference and design differences cause inaccurate position acquisition
Solution Approach 1:
The patent adjusts the conversion scaling factor parameter dynamically based on signal characteristics and device properties. By changing this parameter, the system optimizes the conversion from signal intensity to distance, compensating for variations in antennas, circuits, and housing across different device brands, thereby improving positioning accuracy while maintaining indoor positioning capability
Solution Approach 2:
The system uses feedback from signal intensity measurements to continuously refine distance calculations. By monitoring signal characteristics and adjusting the conversion scaling factor based on observed deviations, the system compensates for interference and design differences, resolving the contradiction between maintaining versatility and improving measurement precision
2Measurement precision
If conversion scaling factor is adjusted to ensure unique intersection of circles or spheres, then position acquisition accuracy improves, but calculation complexity increases
Solution Approach 1:
The patent performs preliminary adjustment of the conversion scaling factor before final position calculation. By pre-optimizing this parameter to ensure unique intersection of circles or spheres, the system simplifies subsequent calculations while guaranteeing accurate position acquisition, thus reducing overall computational complexity
Data Source
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AI summary
The present application discloses a position acquisition method and a position acquisition apparatus. The method includes: selecting at least one group of N effective devices from known devices that transmit signals to a target device or known devices that receive signals transmitted by the target device; adjusting a numerical value of a conversion scaling factor with respect to each group of N effective devices, and seeking a corrected value of the conversion scaling factor, the corrected value enabling N circles or spheres formed by taking a position of each effective device as a center and a corrected distance between each effective device and the target device as a radius to have a unique intersection; wherein the conversion scaling factor is used to convert a signal intensity of the signal transmitted by the effective device towards the target device or the received signal transmitted by the target device into a distance; and calculating and acquiring a position of the target device by using at least one corrected value of the conversion scaling factor acquired. Position acquisition accuracy is improved through the embodiments of the present application.