Wireless Sensor Connection Prioritization via Body Contact Detection
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Solution Overview
Problem
Existing wireless communication systems face challenges in establishing reliable connections between deep body temperature sensors and display units due to the interference caused by a living body, which affects the intensity of radio waves and leads to failed connections.
Innovation Solution
A wireless communication system that prioritizes connecting to deep body temperature sensors in contact with a living body by using a state signal to adjust the connection processing, compensating for the decreased radio wave strength by increasing the determination strength, ensuring that sensors in contact with a human body are preferentially connected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If connection processing is based on radio wave intensity, then connection decisions can be made automatically, but connections fail when the sensor is in contact with a living body due to reduced radio wave strength
Solution Approach 1:
The patent changes the parameter used for connection decisions from radio wave intensity alone to a combination of radio wave intensity and living body contact detection. By detecting whether the sensor is in contact with a living body and adjusting the connection determination accordingly, the system maintains automatic operation while improving connection success rate in contact scenarios.
2Reliability
If the system prioritizes connection based on living body contact state, then appropriate connections are established in contact scenarios, but additional processing complexity is required to detect and prioritize contact states
Solution Approach 1:
The sensor device itself performs the living body contact detection and includes this information in its advertising packets. This self-service approach allows the display device to make informed connection decisions without requiring complex external detection systems, thus improving connection appropriateness while limiting the increase in overall system complexity.
3Length of moving object
If connection is established based on distance derived from reception strength, then far-field connections are possible, but connections fail when the sensor is close to the body but radio wave intensity is reduced due to tissue attenuation
Solution Approach 1:
The patent introduces an intermediary parameter - living body contact detection - that mediates between the sensor and the display device connection decision. This intermediary information allows the system to distinguish between reduced signal strength caused by distance versus reduced signal strength caused by tissue attenuation, thereby improving connection accuracy while maintaining the ability to connect at various distances.
Data Source
AI summary
A wireless communication system is provide that includes deep body temperature sensors that include a measured deep body temperature into an advertising packet that is then transmitted. A display unit displays a measurement result of a deep body temperature. When the wireless connection to the display unit is not established, each of the deep body temperature sensors includes a result of determination of whether it is stuck to a human body into an advertising packet and transmits the advertising packet. In an aspect, the display unit is wirelessly connected to a sensor stuck to a human body among the deep body temperature sensors.