Compact Electrochemical Analyzer With On-Board Calibration
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Solution Overview
Problem
Existing electrochemical analyzers are large, costly, and energy-consuming, requiring high-performance circuit elements to compensate for signal distortion, which increases costs and energy consumption.
Innovation Solution
Integration of electrochemical impedance spectroscopy and potentiostat circuits on a single compact board, utilizing a mixed signal processor with automatic calibration, direct digital synthesizer for signal generation, and digital signal processing to eliminate signal distortion and reduce size and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-performance circuit elements are used to compensate for signal distortion, then measurement precision is improved, but device cost and energy consumption increase
Solution Approach 1:
The patent applies preliminary action by implementing an automatic calibration circuit that performs calibration before actual measurements. This calibration process characterizes the circuit elements' distortion characteristics in advance, allowing the system to compensate for signal distortion using software algorithms rather than requiring expensive high-performance circuit elements. The calibration data is stored and used during measurements to correct distortion effects.
Solution Approach 2:
The patent uses copying by creating a digital model of the circuit's distortion characteristics through calibration. Instead of using expensive physical circuit elements to prevent distortion, the system creates a computational copy of the distortion behavior and uses this model to correct signals through digital signal processing, thereby achieving high measurement precision with low-cost components.
2Measurement precision
If traditional electrochemical analyzers are used, then measurement precision is maintained, but device size and energy consumption increase
Solution Approach 1:
The patent applies merging by integrating the electrochemical impedance spectroscopy circuit and the potentiostat circuit onto a single printed circuit board. This consolidation combines previously separate functional blocks into one unified device, significantly reducing the overall device volume while maintaining full measurement precision capabilities for electrochemical analysis.
Solution Approach 2:
The patent implements universality by designing a multi-functional integrated circuit board that performs both electrochemical impedance spectroscopy measurements and potentiostat control functions. This single board handles multiple electrochemical measurement modes, eliminating the need for separate dedicated instruments and reducing overall device size.
3Measurement precision
If automatic calibration circuit is added, then measurement precision is improved through distortion compensation, but device complexity increases
Solution Approach 1:
The patent applies self-service by implementing an automatic calibration circuit that performs calibration without external intervention. The system automatically characterizes its own circuit elements' distortion characteristics, stores this information, and applies corrections during measurements. This self-calibrating capability improves measurement precision while the automated nature of the process minimizes the operational complexity for the user.
Data Source
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AI summary
The invention relates to an electrochemical analyzer, in which both the electrochemical impedance spectroscopy and the potentiostat circuits are miniaturized on a single board and made compact.