Resident Behavior Tracking via Radio Signal and Door Sensor Fusion
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Solution Overview
Problem
Existing residence monitoring systems that use human detection sensors to track behavior are aesthetically unpleasing and make residents feel uncomfortable, as they require constant carrying of a radio slave unit and may trigger false alarms due to sensor impairments.
Innovation Solution
A sensor system that uses radio transmitting devices and opening/closing detection sensors to determine the presence of residents without a human detection sensor, utilizing a decision part to assess the existence of objects based on radio signal reception strength and timing, and generates information on behavior through an information processing device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a human detection sensor is installed in the living room to monitor resident behavior, then the system can detect intruders and track behavior, but the aesthetic appearance of the living room is impaired and residents feel uncomfortable being monitored
Solution Approach 1:
The patent extracts the human detection sensor from the living room environment and replaces it with a radio wave-based detection system using mobile devices already carried by residents. This removes the harmful visual and psychological impact of installed sensors while preserving behavior tracking capability through radio signal reception level monitoring.
Solution Approach 2:
The patent introduces radio wave signals as an intermediary medium to detect resident behavior. Instead of directly detecting humans with sensors in the living room, the system uses radio waves transmitted from mobile devices as a mediator to infer location and behavior, thereby avoiding the need for visible detection sensors in the living space.
2Reliability
If residents must always carry a radio slave unit to enable behavior tracking, then the system can monitor resident location and behavior, but residents feel uncomfortable due to the constant carrying requirement
Solution Approach 1:
The patent leverages the universal functionality of modern mobile devices which residents already carry for communication and other purposes. By utilizing the radio transmission capability that is inherently part of these universal devices, the system eliminates the need for dedicated tracking devices while maintaining behavior tracking accuracy.
Solution Approach 2:
The patent enables mobile devices to serve dual purposes: their original communication functions plus behavior tracking for the monitoring system. The radio signals transmitted for normal device operation are also utilized by the monitoring system to track resident location and behavior, making the device self-sufficient for both purposes without requiring additional dedicated tracking hardware.
3Reliability
If an installed human detection sensor is used to detect intruders, then intrusion detection is possible, but false alarms occur and the sensor gives residents an impression of being monitored
Solution Approach 1:
The patent inverts the traditional detection approach by not directly detecting the presence of intruders with sensors in the living room. Instead, it detects the absence or unusual patterns of radio signals from registered resident devices, thereby inferring intrusion indirectly and reducing false alarms from environmental factors.
Solution Approach 2:
The patent replaces the mechanical/optical human detection sensor system with an electromagnetic radio wave-based detection system. This substitution eliminates the false alarms associated with physical sensors while maintaining intrusion detection capability through analysis of radio signal presence and patterns.
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
Enables the tracking of resident behavior without the need for human detection sensors, improving aesthetic appeal and reducing resident discomfort by eliminating the requirement for constant radio slave unit carrying and minimizing false alarms.
Implementation Method 1
at least one radio transmitting device configured to transmit a predetermined radio signal regularly
Implementation Method 2
a sensor configured to detect a change in a status of a partition mechanism
Implementation Method 3
a radio receiving part which receives the predetermined radio signal
Data Source
AI summary
A sensor system includes: a radio transmitting device transmitting a predetermined radio signal regularly; a sensor detecting opening/closing or locking/unlocking of a partition mechanism installed in a door of a building or a site; and an information processing device. The information processing device includes: a radio receiving part receiving the predetermined radio signal and result of detection of the sensor; a decision part deciding whether or not a person exists in the building or the site, based on the radio signal; a determination part determining the decision on existence of the person every trigger timing being a timing defined based on the result of the detection of the sensor; an information generation part generating information related to the behavior of the person based on the decision on existence of the person determined at the trigger timing; and an information output part outputting the information generated by the information generation part.