Biological Sensor Patches with Selection Circuit
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Solution Overview
Problem
Existing biological data measurement devices face challenges with complex wiring processes, hindering movement and being costly, especially when multiple sensors are mounted on the human body, particularly during exercise or work.
Innovation Solution
A biological data measurement device featuring patches with first and second heat insulators, a belt-shaped conductor film, and temperature measurement circuits, with a selection circuit to selectively output temperature signals, reducing the number of wires needed and enabling easy mounting on the body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple sensors are mounted on the human body to acquire various biological data, then the quantity of biological data is increased, but the number of wires and wiring complexity increases proportionally
Solution Approach 1:
Multiple temperature sensors are integrated onto a single flexible substrate, allowing multiple measurement points to be achieved without proportionally increasing wire count. The patent combines multiple sensing elements (first and second temperature sensors) on one substrate with shared wiring infrastructure, reducing the overall wiring complexity while maintaining the ability to acquire data from multiple locations.
Solution Approach 2:
The flexible substrate serves multiple functions: it provides mechanical support for multiple sensors, acts as a wiring carrier, and enables flexible mounting on curved body surfaces. This multi-functional design allows the same substrate structure to handle both sensing and wiring requirements, reducing the need for separate wiring systems for each sensor.
2Quantity of substance
If multiple sensors with individual wires are mounted on the human body, then measurement coverage is improved, but the sensors and wires hinder body movement
Solution Approach 1:
The patent employs a flexible substrate that can conform to curved body surfaces and moves with the body, eliminating the restriction caused by rigid wiring. This flexible film structure allows multiple sensors to be mounted on the body without hindering movement, as the entire sensor array flexes and moves together with the underlying tissue.
3Reliability
If traditional wiring methods are used for multiple sensors, then each sensor can be connected reliably, but the device becomes costly and complex
Solution Approach 1:
The patent merges multiple sensor connections onto a single flexible substrate with integrated wiring, reducing the total number of discrete wiring connections required. This consolidation maintains reliable electrical connections for all sensors while simplifying the overall device structure and reducing manufacturing costs.
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
The device simplifies configuration, reduces wire count, and is lightweight, allowing for easy and cost-effective mounting of multiple sensors without increasing the number of wires, enhancing portability and reliability.
Implementation Method 1
a first probe 2 and a second probe 6 measure a heat flow (heat flux) substantially vertically generated from the body surface 3
Implementation Method 2
a first heat insulator 111 and a second heat insulator 112, a belt-shaped wiring film 120
Data Source
AI summary
A biological data measurement device has patches. A patch to be mounted on the human body basically includes first and second heat insulators, first and second temperature measurement circuits, and a belt-shaped wiring film (bus wire). Therefore, the configuration is simple. For example, a thickness can be approximately several mm, and a weight can be approximately several grams. The patch is easily mounted on the human body, and is inexpensive. The patch is equipped with a selection circuit, and selectively outputs a temperature signal of a first thermometer and a temperature signal of a second thermometer at a predetermined timing. Accordingly, even in a case where the patches are mounted on a plurality of locations of the human body, the number of wires is settled by the number required for one patch. The number of wires can be significantly reduced, compared to the number of wires in the related art.