Material Level Sensor Permittivity Measurement via Feature Variation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current material level sensors, such as time domain reflection radar sensors, face accuracy issues due to the lack of accurate and convenient permittivity measurement of materials, which affects their performance.
Innovation Solution
A method involving a material level sensor with a sensing rod and circuit that measures permittivity by obtaining feature values at two different locations within a tank, calculating the feature value variation to determine the material's permittivity, thereby improving sensor accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If material level sensor is installed for material level measurement, then material level measurement function is achieved, but measurement precision deteriorates due to inaccurate permittivity data
Solution Approach 1:
The patent performs preliminary permittivity measurement before conducting material level measurement. The sensor first measures the permittivity of the material in the tank, then uses this pre-obtained permittivity value for subsequent material level measurements, ensuring accurate and reliable results
Solution Approach 2:
The patent segments the measurement process into two distinct phases: first measuring permittivity, then measuring material level. This segmentation allows each measurement to be optimized independently, with the permittivity measurement serving as a prerequisite for accurate material level measurement
2Reliability
If traditional permittivity measurement methods are used, then measurement function is achieved, but ease of operation deteriorates due to complex measurement procedures
Solution Approach 1:
The patent makes the material level sensor multi-functional by enabling it to perform both permittivity measurement and material level measurement. This universal sensor design eliminates the need for separate measurement devices and procedures, greatly improving ease of operation while maintaining measurement reliability
Solution Approach 2:
The patent combines permittivity measurement and material level measurement into a single integrated process using one sensor. The sensor measures both properties sequentially, merging two measurement functions into one operation and simplifying the overall measurement procedure
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
This method enables precise permittivity measurement, enhancing the accuracy of material level sensors and allowing for more reliable material depth determination.
Implementation Method 1
the time domain reflection radar sensor is used widely for measuring the material level
Implementation Method 2
the permittivity of the material will impact the round-trip time of the measurement signals in the material
Data Source
AI summary
A method for measuring a permittivity (ε) of a material (30) includes following steps. A sensing rod (14) of a material level sensor (10) inserts into a tank (20). The material level sensor (10) proceeds with a material level measurement of the material (30) to obtain a first feature value. The material level sensor (10) is vertically moved with a vertical distance (Hair). The material level sensor (10) proceeds with the material level measurement to obtain a second feature value, and subtracts the first feature value by the second feature value to obtain a feature value variation, and calculates the feature value variation to obtain the permittivity (ε) of the material (30).