Multi-sensor Physiological Device Synchronizing RRF, Optical and Load Data
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Solution Overview
Problem
Existing physiological sensor devices struggle to accurately and simultaneously measure multiple physiological signals from the same tissue zone, leading to incomplete data and potential errors in signal processing.
Innovation Solution
A multi-sensor device integrating a resonant radiofrequency (RRF) sensor, an optical sensor, and a load sensor, which are synchronized to generate augmented physiological data by combining resonance, optical, and load data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sensors are integrated to measure physiological signals simultaneously, then measurement completeness and precision are improved, but device complexity increases
Solution Approach 1:
The patent combines multiple physiological sensors (optical sensor for PPG, load sensor for contact force, temperature sensor, and humidity sensor) into a single integrated sensor device that simultaneously measures multiple physiological parameters from the same tissue zone, thereby improving measurement precision while managing device complexity through unified design
Solution Approach 2:
The sensor device is designed with multi-functionality to perform various physiological measurements including photoplethysmography, contact force detection, temperature monitoring, and humidity sensing, allowing a single device to serve multiple measurement purposes and reducing the need for separate specialized sensors
2Measurement precision
If sensors measure from different locations, then device simplicity is maintained, but data accuracy deteriorates due to tissue alterations
Solution Approach 1:
All sensors are positioned to measure physiological signals from the exact same tissue zone, ensuring that measurements are taken from a unified location. This spatial merging eliminates errors caused by tissue alterations between measurement points and enables accurate correlation between different physiological signals
Solution Approach 2:
The device uses feedback mechanisms to detect and compensate for tissue alterations affecting optical signals. By monitoring contact force, temperature, and humidity alongside optical measurements, the system can identify when tissue properties change and adjust or filter the optical data accordingly to maintain measurement accuracy
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 provides improved precision in physiological data measurement by synchronizing and combining data from multiple sensors, enhancing the analysis of signals and reducing errors associated with tissue alterations.
Implementation Method 1
a resonant radiofrequency (RRF) sensor comprising an antenna, the RRF sensor being configured to generate resonance data
Implementation Method 2
When performing a PPG (photoplethysmography) measurement, the finger exerts a force on the sensor
Data Source
AI summary
A new physiological sensor capable of using several synchronized physiological signals to identify physiological properties of a user: at least two of a load sensor, an optical sensor and a radiofrequency resonant sensor are used together to obtain data from a MUT on an interface area.