Pulse Period Calculation Device for Biosensor Peak Detection
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Solution Overview
Problem
Existing pulse period calculation devices face challenges in determining peak values from low-level biological signals and require complex arithmetic processing, which limits their convenience, size reduction, and cost-effectiveness.
Innovation Solution
A pulse period calculation device that includes maximum value detecting means, peak value determining means, and fixed time period changing means, allowing for simple arithmetic processing to detect peak values and calculate rhythmic periods by adjusting time intervals and using successive time periods based on signal intensity, thereby improving accuracy and reducing device size and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If complex arithmetic processing is used to determine peak values from biological signals, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent changes the parameter of time interval (using fixed time periods instead of dynamic adjustment) and signal threshold (using predetermined thresholds) to simplify the peak detection process. This allows accurate peak value determination from low-level biological signals while avoiding complex arithmetic processing, thus resolving the contradiction between measurement precision and device complexity.
2Device complexity
If fixed time period is used for peak value determination, then device complexity is reduced, but adaptability to varying signal intensities deteriorates
Solution Approach 1:
The patent introduces a feedback mechanism where the predetermined threshold for peak value determination is adjusted based on the detected signal level. When the biological signal intensity varies, the system automatically adjusts the threshold to maintain accurate peak detection, thus achieving adaptability without increasing device complexity.
3Device complexity
If simple arithmetic processing is used, then device size and cost are reduced, but measurement precision of low-level signals deteriorates
Solution Approach 1:
The patent applies preliminary filtering and preprocessing to the biological signal before peak value determination. By removing noise and enhancing signal characteristics in advance, the system enables accurate detection of low-level signals using simple arithmetic processing, thus resolving the contradiction between processing simplicity and measurement precision.
Data Source
AI summary
A device for calculating a pulse period of a living body. The device includes a maximum value detecting unit that detects a maximum value of a biological signal received at a predetermined time interval, a peak value determining unit that determines whether the maximum value is a peak value of the biological signal detected by the maximum value detecting unit during a fixed time period, a calculating unit that calculates a rhythmic pulse period of a living body generating the biological signal based on a time interval between successive peak values of the biological signal; and a fixed time period changing unit that changes the fixed time period to a predetermined time period that corresponds to the time interval between the successive peak values of the biological signal.