Detection Signal Difference Method for Baseline Drift
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Solution Overview
Problem
Current detection methods, such as electrochemical sensors, face limitations in sensitivity due to signal noise and baseline drift, making it difficult to reliably measure small analyte concentrations.
Innovation Solution
The method involves an enrichment phase where a detectable product is allowed to accumulate in a detection space, followed by rinsing and measuring a first detection signal, then a second signal after the space is rinsed out, allowing for the calculation of a signal difference to quantify the product independently of baseline drift.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measurement is performed continuously to detect small analyte concentrations, then sensitivity is improved, but baseline drift causes unreliable measurements
Solution Approach 1:
The patent applies preliminary action by performing an enrichment phase before the actual measurement. During this phase, the detectable product is allowed to accumulate in the detection space for a first time period, concentrating the analyte to enhance subsequent detection sensitivity and enable reliable measurement of small concentrations.
Solution Approach 2:
The measurement process is segmented into distinct phases: an enrichment phase followed by a measurement phase. The detection space is rinsed between these phases, creating separate temporal and functional segments that allow baseline drift to be minimized by comparing signals from different time points.
2Measurement precision
If enrichment time is extended to increase product concentration, then detection sensitivity is improved, but measurement time increases
Solution Approach 1:
The patent employs periodic action by using a two-stage temporal structure: a first time period for enrichment followed by a second time period for measurement. This periodic structure allows the system to concentrate the analyte efficiently during the enrichment phase and then quickly measure the signal, optimizing both sensitivity and total measurement time.
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
This approach significantly increases sensitivity by minimizing baseline drift effects and enhancing signal differentiation, enabling reliable detection of low concentrations.
Implementation Method 1
The enrichment reaction is a chemical reaction in which a substrate or educt is converted into a detectable product, the detectable product being enriched by the enrichment reaction in the course of time.
Implementation Method 2
terminating the enrichment by rinsing the detectable product out from the detection space
Data Source
AI summary
In order to avoid problems caused by baseline drift, it is expedient in a method of an embodiment of the present application not to measure a signal rise in a detection space, but to allow a certain time period to elapse in order to enrich a detectable product (enrichment phase), then to measure a first detection signal, and to measure the baseline signal as second detection signal only after rinsing out the detection space and removing the enriched product. In at least one embodiment, the enriched product is not detected from a signal rise with reference to a baseline, but from a signal difference of first and second detection signals.