Beacon Presence Detection via Signal Profile Simplification
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Solution Overview
Problem
Conventional beacon-based systems inaccurately detect user presence due to fluctuations in radio wave reception intensity, leading to erroneous execution or termination of applications despite the user being within the designated area.
Innovation Solution
A control method that involves receiving radio waves from a beacon, generating a pattern of transition in reception intensity, simplifying this pattern to create a profile, comparing it with reference profiles, and determining how to control applications based on the comparison to prevent false detection of user absence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the reception intensity of radio waves is used to detect user presence, then the presence detection function is implemented, but false detection occurs due to momentary fluctuations in reception intensity
Solution Approach 1:
The system performs preliminary actions by generating a pattern of transition in reception intensity and creating a simplified profile before comparison. This preparatory processing of the reception intensity data allows the system to anticipate and filter out momentary fluctuations, establishing a more reliable basis for presence detection that prevents false positives while maintaining accurate detection capability.
2Productivity
If a simple threshold comparison is used for presence detection, then the detection process is simple and fast, but false termination of applications occurs due to momentary signal fluctuations
Solution Approach 1:
The system segments the reception intensity signal processing into distinct stages: generating the raw pattern of transition, simplifying it into a profile, and then comparing with reference profiles. This segmentation allows the system to maintain computational efficiency while improving reliability, as each stage processes only essential features rather than raw data, preventing false application terminations.
Solution Approach 2:
The simplified profile acts as an intermediary between the raw reception intensity pattern and the reference profiles for comparison. This intermediate representation filters out noise and momentary fluctuations while preserving the essential characteristics of user presence, enabling accurate application execution control without requiring complex real-time processing.
3Measurement precision
If the reception intensity threshold is set to be sensitive, then user presence can be detected accurately, but false absence detection occurs due to signal fluctuations
Solution Approach 1:
The system performs preliminary simplification of the reception intensity pattern into a profile before comparison, which pre-filters momentary fluctuations. This allows the use of sensitive threshold settings for accurate presence detection without incurring false absence detections, as the critical processing has already been performed on the stabilized profile data.
Data Source
AI summary
A control method executed by a system including a beacon and a computer capable of executing an application, the control method includes receiving a radio wave from the beacon; generating a pattern of transition in reception intensity of the received radio wave; generating a profile of a temporal change by simplifying the generated pattern of transition; comparing the generated profile with at least one of a plurality of reference profiles different from each other; and determining how to control the application in accordance with a result of the comparing.