Positioning Module Using Maximum Radio Wave Intensity Threshold
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Solution Overview
Problem
Conventional positioning systems are inaccurate due to variations in radio wave intensity, often misidentifying the position of a receiver when the intensity from a nearby transmitter is stronger than expected, leading to incorrect positioning even when the receiver and transmitter are at the same location.
Innovation Solution
An information processing apparatus with a recording, extraction, and positioning module that records and extracts maximum radio wave intensities, determining the receiver's position based on the highest intensity exceeding a threshold value, thereby ensuring accurate positioning by focusing on the transmitter with the strongest signal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the positioning system uses radio wave intensity from multiple transmitters to determine position, then positioning coverage is improved, but positioning accuracy deteriorates when a distant transmitter has abnormally strong signal
Solution Approach 1:
The patent extracts and removes abnormal data points from the radio wave intensity measurements. The determination unit identifies transmitters whose signal strengths deviate from the expected pattern based on distance, and excludes these abnormal measurements from the positioning calculation, thereby preventing them from degrading positioning accuracy while maintaining the ability to use signals from multiple transmitters.
Solution Approach 2:
The system implements a feedback mechanism where the determination unit continuously evaluates the合理性 of each transmitter's signal strength based on the known positions of transmitters and the measured receiver position. When abnormal signals are detected, the system adjusts the weighting or exclusion of specific transmitter signals in subsequent positioning calculations, creating a self-correcting mechanism that improves accuracy.
2Adaptability or versatility
If the positioning system relies on radio wave intensity ratios from multiple transmitters, then positioning functionality is enabled in complex environments, but reliability deteriorates due to environmental factors affecting signal strength
Solution Approach 1:
The patent extracts and removes abnormal data points from the radio wave intensity measurements. The determination unit identifies transmitters whose signal strengths deviate from the expected pattern based on distance, and excludes these abnormal measurements from the positioning calculation, thereby preventing them from degrading positioning accuracy while maintaining the ability to use signals from multiple transmitters.
Solution Approach 2:
The system dynamically changes the parameters used in positioning calculations based on the quality and reliability of received signals. The determination unit adjusts the weighting of different transmitter signals or excludes certain transmitters from calculation when their signals show abnormal characteristics, allowing the system to adapt to varying environmental conditions and maintain reliability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for accurate measurement of the receiver's position by prioritizing the transmitter with the maximum radio wave intensity, reducing errors caused by abnormal signal strengths and enhancing positioning system reliability.
Implementation Method 1
a positioning system using a near distance radio technology... measures a position of a receiver for receiving a transmitter code based on the transmitter code capable of identifying a transmission transmitted from the transmitter and a radio wave intensity of the transmitted transmitter code
Data Source
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AI summary
An information processing apparatus comprises a recording module which records radio wave intensities of a near distance radio communication between a plurality of first communication devices installed in an area for positioning an object and a second communication device moving in the area by each time zone; an extraction module which extracts maximum radio wave intensity from the radio wave intensities recorded in the same time zone and extracts the radio wave intensities of other first communication devices arranged in the vicinity of a position where the first communication device with the maximum radio wave intensity is installed; and a positioning module which measures a position of the second communication device based on the plurality of the radio wave intensities extracted by the extraction module, wherein the positioning module determines that the second communication device is present at a position where the first communication device with the maximum radio wave intensity is installed on condition that the maximum radio wave intensity extracted by the extraction module is equal to or greater than a threshold value.