Bio-signal Peak Detection Using Ultrasonic Sensor and Processor
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Solution Overview
Problem
Existing bio-signal monitoring technologies face challenges in accurately detecting peaks due to variations in bio-signal waveforms among individuals, leading to false detection and reduced accuracy in health condition estimation.
Innovation Solution
A method and apparatus that utilize an ultrasonic sensor and processor to detect peaks in bio-signals by analyzing time intervals, amplitudes, waveform shapes, and peak occurrence positions, allowing for the identification and correction of false detections to improve estimation accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional peak detection methods are used on bio-signals, then the detection process is simple and fast, but the accuracy of peak detection deteriorates due to false detections caused by waveform variations among individuals
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting detection parameters (such as threshold values, time intervals, and amplitude criteria) based on the actual waveform characteristics of each individual's bio-signal. This allows the detection system to adapt to waveform variations among individuals, thereby improving peak detection accuracy without requiring a completely complex new detection framework
Solution Approach 2:
The patent implements feedback mechanisms where the detected peak information and waveform characteristics are fed back into the detection algorithm to continuously refine and adjust detection parameters. This feedback loop enables the system to learn from previous detections and improve accuracy over time, reducing false detections while maintaining a manageable system complexity
2Reliability
If multiple detection parameters are analyzed to improve accuracy, then peak detection reliability is improved, but the processing time and computational complexity increase
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing reference waveform patterns, typical peak characteristics, and detection parameter ranges before actual peak detection occurs. During real-time detection, the system quickly compares incoming signals against these pre-prepared references, significantly reducing processing time while maintaining high reliability through multiple parameter analysis
Solution Approach 2:
The patent segments the peak detection process into distinct stages (preprocessing, candidate identification, verification, and final detection), where different parameter analyses are applied at appropriate stages. This segmentation allows computationally intensive multiple parameter analyses to be performed only when necessary, rather than continuously, thereby reducing overall processing time while maintaining detection reliability
Data Source
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AI summary
An apparatus for estimating bio-information is provided. The apparatus for estimating bio-information according to an embodiment includes: an ultrasonic sensor configured to acquire a bio-signal from an object; and a processor configured to detect peaks from the bio-signal, and to determine false detection of a peak, among the detected peaks, by using at least one of a time interval between a current peak and an immediately preceding peak, amplitudes of the current peak and the immediately preceding peak, a shape of a waveform on a left region and a right region of the peak, and an occurrence position of the peak.