Fluid Property Detection Circuit Error Compensation
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Solution Overview
Problem
Existing fluid property detecting devices suffer from high error rates in measurement due to errors introduced by circuit elements, making it difficult to accurately determine fluid properties and identify fluid types, especially when different devices are used for the same fluid.
Innovation Solution
A fluid property detecting device that includes a detection portion with a pair of electrodes and a detection circuit, which uses reference detection values from a fluid with significantly lower conductivity to subtract errors from the measurement values, improving accuracy by calculating property values based on the difference between detection values from the fluid and the reference fluid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If circuit elements such as op amplifiers are used to amplify the detection value, then the detection value becomes usable for calculation, but errors from the circuit elements are superposed on the output value, reducing measurement precision
Solution Approach 1:
A reference detection value obtained by detecting air (or vacuum) with known properties is introduced as an intermediary to compensate for circuit element errors. The reference value serves as a baseline that captures the error characteristics of the circuit elements, allowing these errors to be subtracted from the fluid detection value to obtain an accurate measurement.
Solution Approach 2:
The detection system measures two different parameters: the detection value of the fluid and the reference detection value of air (or vacuum). By changing the parameter being measured from fluid to reference fluid, the system can isolate and eliminate circuit element errors through subtraction, improving the reliability of the measurement.
2Adaptability or versatility
If different fluid property detecting devices are used to detect the same fluid, then multiple measurements can be obtained, but the detection values differ due to different circuit element errors, making it difficult to identify fluid types
Solution Approach 1:
The reference detection value acts as a universal intermediary that standardizes measurements across different devices. By subtracting the device-specific reference value from the device-specific fluid detection value, each device's unique circuit element errors are eliminated, enabling consistent fluid identification across multiple devices.
Solution Approach 2:
The reference detection process creates a copy or baseline of the circuit element error characteristics for each device. This copied error profile is then subtracted from the actual measurement, allowing different devices to produce consistent results by compensating for their individual error characteristics.
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
The device achieves improved detection accuracy by removing error influences from circuit elements, allowing for precise calculation of fluid properties and effective identification of fluid types, even when slight changes occur, thereby enhancing the reliability of fluid property determination.
Implementation Method 1
detection portion arranged by facing a working fluid and configured to detect electric characteristics of the working fluid
Data Source
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AI summary
A fluid property detecting device (100) includes a detection portion (10) configured to detect electric characteristics of a detection target fluid, a calculation portion (51) configured to calculate a property value of the detection target fluid, and a storage portion (52) configured to store the property value calculated by the calculation portion (51). The storage portion (52) stores, in advance, as the reference detection value, the detection value of the electric characteristic of a reference fluid detected by the detection portion (10), and the calculation portion (51) calculates the property value of the detection target fluid on the basis of a value obtained by subtracting the reference detection value from a detection value of the detection target fluid.