Electrochemical Sensor State Detection via Electrode Potential Difference
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Solution Overview
Problem
Existing electrochemical sensors face performance degradation due to aging and improper handling, necessitating complex measurement setups for state assessment.
Innovation Solution
Utilizing the potential difference between a reference electrode and a counter electrode as a characteristic variable to detect the sensor's operating state, allowing for easy assessment without interrupting the measurement operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If complex measurement setups and test series are used to assess sensor state, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent extracts the state detection function from complex measurement setups by utilizing the existing potential difference signal between counter electrode and reference electrode. This extracted signal serves as a direct indicator of sensor state, eliminating the need for additional complex measurement equipment and test series while maintaining detection accuracy.
Solution Approach 2:
The potential difference measurement serves multiple functions simultaneously: it provides both the analytical measurement signal and the sensor state indicator. This multi-functionality allows the same electrical measurement to assess both the sensor's operational state and its performance characteristics, reducing the need for separate dedicated state assessment systems.
2Reliability
If sensor performance monitoring is implemented to detect aging and improper handling effects, then reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The sensor performs self-diagnosis by utilizing its own potential difference signal to monitor its operational state. The sensor system automatically detects changes in its own condition through continuous monitoring of the potential difference between electrodes, enabling reliability assessment without requiring external complex evaluation procedures or interrupting normal measurement operations.
3Reliability
If continuous monitoring of sensor state is performed to enable early detection, then reliability is improved, but use of energy increases
Solution Approach 1:
The patent merges the state monitoring function with the normal operational current supply to the sensor. The potential difference measurement is performed using the existing electrical connections and power supply already required for sensor operation, rather than requiring separate dedicated monitoring circuits and power sources. This integration enables continuous state monitoring while minimizing additional energy consumption.
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
Enables early detection of sensor state changes, preventing irreversible damage and ensuring improved device availability by providing timely service measures.
Implementation Method 1
the potential difference between the counter electrode and the reference electrode (UCE-RE) can be used as a characteristic signal variable which is influenced by environmental variables such as temperature or moisture content and specific disturbance variables such as solvent vapors
Data Source
AI summary
A variable of an electrochemical sensor (1), correlating with a voltage between two electrodes, for detecting the operating state of the sensor, and a method for detecting the operating state of an electrochemical sensor (1), in which a variable correlating with a voltage between the reference electrode (3) and the counter electrode (4) is recorded. An apparatus with an electrochemical sensor (1) for use according to the method is also provided.