Mutation Signal Processing in Medical Detecting Apparatuses
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Solution Overview
Problem
Existing signal processing systems, such as those used in medical electronics, face distortion issues when filtering signals due to the presence of mutation signals, which can affect the signal-to-noise ratio and the accuracy of signal processing, particularly in the presence of pacemakers.
Innovation Solution
A method and device that detect the presence of mutation signals in input signals using amplitude variations, and if present, use a prestored difference value to process the signals, avoiding distortion by subtracting this value from the input signal, thereby preventing the mutation signals from passing through filters like high-pass or low-pass filters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-pass filter or low-pass filter is used to remove interfering signals, then signal-to-noise ratio is improved, but mutation signals are distorted along with normal detecting signals
Solution Approach 1:
The patent segments the signal processing into two distinct paths: one for normal signals (through filter) and one for mutation signals (through subtraction). The mutation signal detection unit divides the input signal into normal signal components and mutation signal components, allowing differential processing that preserves mutation signals while filtering interference.
Solution Approach 2:
The patent introduces a prestored difference value as an intermediary element that represents the baseline relationship between input and filtered signals. This intermediary is used in the subtraction path to reconstruct mutation signals without filter distortion, while the filter path handles normal signals with interference removal.
2Object-affected harmful factors
If filter is applied to all signals, then interfering signals are removed, but mutation signals cannot be preserved accurately
Solution Approach 1:
The patent implements dynamic signal routing where the processing path changes based on signal characteristics. The mutation signal detection unit dynamically identifies whether the current signal segment contains mutation signals and routes it through the appropriate processing path (filter or subtraction), making the system adaptive rather than static.
Solution Approach 2:
The patent changes the processing parameter (filtering vs. subtraction) based on the detected presence of mutation signals. When mutation signals are detected, the system switches from filter-based processing to subtraction-based processing, thereby adapting the processing method to the signal content.
3Stability of the object's composition
If mutation signals are reserved during filtering, then pace-making regularity is maintained, but normal detecting signals become distorted
Solution Approach 1:
The patent segments the signal processing into two distinct paths: one for normal signals (through filter) and one for mutation signals (through subtraction). The mutation signal detection unit divides the input signal into normal signal components and mutation signal components, allowing differential processing that preserves mutation signals while filtering interference.
Data Source
AI summary
Mutation signal processing methods, devices and medical detecting apparatuses are described. The method includes detecting whether or not a mutation signal exists in an input signal; if the mutation signal exists in the input signal, processing the input signal by a filter to obtain an output signal, and updating a prestored difference value according to a difference value obtained by subtracting the output signal from the input signal; and if the mutation signal does not exist in the input signal, using a difference value obtained by subtracting the prestored difference value from the input signal as the output signal.