Liquid Property Sensor Using Impedance Calibration Data
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Solution Overview
Problem
Existing sensors are limited in their ability to determine multiple properties of liquids, such as mixing ratio, curing status, and ageing status, which are crucial for industrial processes, leading to potential deviations and waste due to inadequate monitoring.
Innovation Solution
A property sensor system that includes a channel with a sensing zone, electrodes for generating electric fields, and a data storage device with pre-stored calibration data to derive property values from impedance responses, allowing for the determination of various liquid properties like viscosity, density, and curing status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electrical sensors are used to determine properties of liquids, then mixing ratio can be detected, but the ability to determine multiple properties (viscosity, density, curing status, ageing status) is limited
Solution Approach 1:
The sensor system is designed to perform multiple measurement functions using a single integrated device. The property sensor can determine mixing ratio, viscosity, density, curing status, and ageing status of liquids by analyzing impedance responses at different frequencies, eliminating the need for multiple separate sensors and expanding measurement versatility while maintaining precision through comprehensive property analysis
2Reliability
If traditional sensors are used for liquid property monitoring, then device complexity is reduced, but quality control accuracy and waste reduction capability deteriorate
Solution Approach 1:
The patent combines multiple measurement capabilities into a single property sensor that integrates electrodes, impedance measurement circuitry, and calibration data storage. This unified approach enhances quality control reliability by providing comprehensive liquid property monitoring (mixing ratio, viscosity, density, curing status, ageing status) while managing device complexity through integrated design rather than multiple separate sensors
3Loss of substance
If multiple properties of liquids are monitored accurately, then waste is reduced and quality control is improved, but the complexity of sensing and data processing increases
Solution Approach 1:
The sensor system performs preliminary calibration by storing impedance response data at different frequencies corresponding to known liquid properties before actual measurement. This pre-stored calibration data enables the sensor to accurately determine multiple liquid properties (mixing ratio, viscosity, density, curing status, ageing status) by comparing real-time impedance measurements against calibration references, reducing waste through accurate quality control while managing complexity through pre-established measurement protocols
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 accurate and efficient monitoring of liquid properties in real-time, reducing waste and improving quality control by determining multiple properties of liquids, including mixing ratios, curing status, and ageing status, thereby optimizing industrial processes.
Implementation Method 1
sense between the electrodes, at the one or more sensing frequencies, while the liquid flows through the sensing zone and while the electric field is present, a response impedance
Implementation Method 2
two electrodes for generating an electric field of one or more sensing frequencies in the sensing zone
Data Source
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Figure 4~5
AI summary
Property sensor for determining a property of a liquid, the property sensor comprising a) a channel comprising a sensing zone through which the liquid flows; b) two electrodes for generating an electric field of one or more sensing frequencies in the sensing zone; c) a data storage device comprising a pre-stored set of calibration data representing calibration impedance responses measured previously at the one or more sensing frequencies and at different property values of the property of an identical liquid; and d) a device to repeatedly i) generate between the electrodes an electric field of in the sensing zone; ii) sense between the electrodes, a response impedance; iii) derive from the response impedance a property value of the property of the liquid, using the pre-stored set of calibration data representing calibration impedance responses. A method for sensing a property of the liquid and a data set of calibration data representing calibration impedance responses usable with the sensor and the method are also disclosed.