Dynamic Power Positioning Signal Intensity Distance Function
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing dynamic power positioning methods face accuracy limitations due to the decaying nature of fixed-power signals, leading to high positioning errors in indoor environments, especially when relying solely on signal intensity without additional sensors.
Innovation Solution
A dynamic power positioning system that calculates a signal intensity-distance function and standard deviation function by transmitting test signals at varying powers, allowing for the determination of device location using known location devices and probability distribution planes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If fixed-power transmitting signals are used for positioning, then the system is simple to implement, but the positioning accuracy is limited by the decaying form of a single power signal
Solution Approach 1:
The patent applies dynamics by transitioning from fixed-power to dynamic power transmission. The transmitting device adjusts its transmission power to multiple different power levels, creating variable signal intensities that improve positioning accuracy through the signal intensity-distance function while maintaining system implementation simplicity.
Solution Approach 2:
The patent changes the power parameter of transmitting signals from a fixed value to multiple variable values. By transmitting signals at different power levels and recording corresponding signal intensities, the system establishes a signal intensity-distance function that enables more accurate distance calculation and positioning.
2Ease of manufacture
If signal intensity is used to estimate distance without additional sensors, then the device cost is reduced, but the positioning error increases due to great changes in signal intensity
Solution Approach 1:
The patent changes the transmission power parameter to multiple different levels, which stabilizes the relationship between signal intensity and distance. By establishing a signal intensity-distance function through multi-power transmission, the system reduces positioning error caused by signal intensity variations while maintaining low device cost without additional sensors.
Solution Approach 2:
The patent implements feedback by recording signal intensities at different power levels and using them to calculate distances through the signal intensity-distance function. This feedback mechanism allows the system to compensate for signal intensity variations and improve positioning accuracy without requiring additional sensing modules.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A dynamic power positioning method and a dynamic power positioning system are disclosed. The method comprises the steps of: controlling a device to be measured to transmit a plurality of positioning signals with a plurality of transmission powers; making a plurality of known location devices to receive the plurality of positioning signals, and recording the intensities and the corresponding reception times of the plurality of positioning signals, and the coordinates of the plurality of known location devices to the database; finding out the known location device corresponding to a positioning signal having a higher signal intensity among the received plurality of positioning signals; obtaining a signal intensity-distance function and a signal intensity-distance standard deviation function from the database; and finding out the device location of the device to be measured according to the signal intensity-distance function and signal intensity-distance standard deviation function.