Physiological Sensor Partial Detachment Compensation
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Solution Overview
Problem
Conventional physiological signal detection equipment, such as sensing electrode pads, often detach from the skin due to sweat or wearer movement, leading to distorted and inaccurate signal readings, as users may not be aware of the detachment and experience discomfort from enhanced adhesiveness solutions.
Innovation Solution
A physiological sensor device incorporating a physiological signal sensor, a first compensation sensor, and a signal processing device that detects partial detachment from the skin and calculates a failure region to compensate for the lost signal, using compensation electrodes and a geometric mathematical operation to calculate the area of the failure region and adjust the signal value accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sensing electrode pad uses enhanced adhesiveness to prevent detachment, then the reliability of signal detection is improved, but the wearer experiences discomfort and the device complexity increases
Solution Approach 1:
The sensing electrode pad is divided into multiple sensing regions with individual compensation electrodes. Each compensation electrode monitors the adhesion status of its corresponding sensing region independently, allowing localized detection and compensation without requiring enhanced adhesiveness across the entire pad.
Solution Approach 2:
The compensation electrodes provide real-time feedback on the adhesion status of each sensing region. Based on this feedback, the system dynamically compensates for signal distortion caused by partial detachment, maintaining reliable signal detection without needing stronger adhesives that would compromise wearer comfort.
2Reliability
If the sensing electrode pad is made more adhesive to prevent falling off, then the reliability is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
Rather than manufacturing a single complex adhesive structure, the pad is segmented into multiple sensing regions, each with its own compensation electrode. This simplifies manufacturing by using standard adhesive materials while adding functional complexity through the distributed sensing architecture.
Solution Approach 2:
The compensation electrodes serve multiple functions: they detect adhesion status, identify failure regions, and enable signal compensation. This multi-functionality eliminates the need for specialized adhesive structures, simplifying manufacturing while maintaining attachment reliability.
3Device complexity
If conventional sensing electrode pads are used without compensation mechanisms, then the device complexity is low, but the measurement precision deteriorates when partial detachment occurs
Solution Approach 1:
The pad is segmented into multiple sensing regions, each monitored by its own compensation electrode. This segmentation enables localized precision measurement by identifying which specific regions are properly attached and which are detached, allowing accurate signal extraction from reliable regions.
Solution Approach 2:
The system changes the parameter of signal processing by applying compensation algorithms based on adhesion status. When partial detachment is detected, the system adjusts the physiological signal through mathematical compensation, maintaining measurement precision without requiring complex hardware modifications.
4Ease of manufacture
If the sensing electrode pad uses simple adhesive structure, then the ease of manufacture is improved, but the reliability of continuous signal detection worsens due to detachment
Solution Approach 1:
The compensation electrodes provide continuous feedback on adhesion status, enabling the system to detect and compensate for partial detachment in real-time. This feedback mechanism maintains continuous reliable signal detection while keeping the adhesive structure simple and easy to manufacture.
Solution Approach 2:
The sensing system performs self-diagnosis through the compensation electrodes, automatically identifying failure regions and compensating for signal distortion without external intervention. This self-service capability ensures continuous reliable operation while maintaining manufacturing simplicity.
Data Source
AI summary
A physiological sensor device and system, and a correction method are provided. The physiological sensor device includes a physiological signal sensor, a first compensation sensor, and a signal processing device. The physiological signal sensor is attached to an object to be detected to sense a physiological signal value. The first compensation sensor is disposed on the physiological signal sensor. The signal processing device is coupled to the physiological signal sensor and the first compensation sensor. The signal processing device obtains through the first compensation sensor a failure region of the physiological signal sensor partially detached from the object to be detected and obtains a first failure compensation value according to the failure region, so as to compensate the physiological signal value sensed by the physiological signal sensor.