Cell Culture Sensor Error Detection via Counter Electrode Voltage
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Solution Overview
Problem
Conventional cell culture sensors are prone to measurement errors due to improper sensor immersion and contamination, such as mold adhesion, which are not adequately addressed by existing technologies.
Innovation Solution
A cell culture analysis device with a three-electrode sensor configuration, including a counter electrode designed to detect contamination and improper immersion by monitoring the counter electrode terminal voltage, and a control system to accurately identify measurement errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple types of information (image data, spectral data, measurement data) are acquired and integrated, then comprehensive sample analysis capability is improved, but device complexity and processing time increase
Solution Approach 1:
The system divides information acquisition into separate functional modules: imaging unit for visual information, spectral unit for chemical composition, and measurement unit for physical properties. Each module independently captures specific data types, which are then integrated in the information integration unit, reducing overall system complexity while maintaining comprehensive analysis capability.
Solution Approach 2:
The information integration unit serves multiple functions: it receives diverse data types from different units, performs unified processing, and outputs comprehensive analysis results. This multi-functional component consolidates the complexity into a single manageable unit that handles all information integration tasks.
2Adaptability or versatility
If multiple types of information are acquired and integrated, then comprehensive sample analysis capability is improved, but processing time increases
Solution Approach 1:
The system performs preliminary acquisition and preprocessing of different information types in parallel before integration. The imaging unit, spectral unit, and measurement unit simultaneously capture their respective data, and the information integration unit processes this pre-acquired data, reducing total processing time while maintaining comprehensive analysis.
3Measurement precision
If spectral information and image information are integrated, then identification accuracy of similar samples is improved, but measurement precision requirements increase
Solution Approach 1:
The information integration unit acts as an intermediary that receives spectral information and image information from separate units, processes them together, and produces integrated identification results. This mediator consolidates the measurement precision requirements into a single processing stage, improving identification accuracy while managing complexity.
Data Source
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AI summary
A cell culture analysis device (1) comprises a voltage application unit (11a), a current measurement unit (11b), a voltage measurement unit (11c), and an analysis unit (42). The voltage application unit (11a) applies voltage to a sensing unit (31a), which includes a working electrode, a counter electrode, and a reference electrode, of a sensor (30) in a state in which the sensing unit (31a) is immersed in the culture medium (X). The current measurement unit (11b) measures the current flowing through the sensor (30) from the voltage applied to the sensing unit (31a). The analysis unit (42) calculates the concentration of glucose or the like contained in a culture medium on the basis of the measurement result from the current measurement unit (11b). The voltage measurement unit (11c) measures the terminal voltage of the counter electrode included in the sensing unit (31a) in a state in which the voltage application unit (11a) is applying voltage. The analysis unit (42) detects a measurement error on the basis of the terminal voltage of the counter electrode measured by the voltage measurement unit (11c).