Annular Load Cell with Variable Young's Modulus Sections
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Solution Overview
Problem
Conventional load cells are not adaptable to varying force ranges and require individual manufacturing for different applications, making them costly and resource-intensive, and are typically designed for short-term use without the ability to replace active sensing components while the load is applied.
Innovation Solution
A load cell with an annular base unit and varying sections of different Young's modulus materials, allowing for adjustment of the measurement range by changing the material or section configuration, enabling easy adaptation to different applications and allowing active sensing component replacement under load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If individual load cells are manufactured for each application to match specific force ranges, then measurement precision is improved, but manufacturing cost and resource consumption increase
Solution Approach 1:
The load cell base unit is designed as a universal platform that can be adapted to multiple different force measurement applications through interchangeable sections with different Young's moduli. The same base unit structure can serve various measurement ranges by simply changing the section inserts, eliminating the need to manufacture entirely different load cells for each application.
Solution Approach 2:
The load cell is divided into a base unit and separate interchangeable sections. Each section has a specific Young's modulus tailored for different force ranges. This segmentation allows the measurement system to be reconfigured for different applications by swapping sections while keeping the base unit, thereby reducing manufacturing costs while maintaining measurement precision.
2Device complexity
If standard load cells are designed for short term applications, then device complexity is reduced, but operational lifespan and maintainability worsen
Solution Approach 1:
The load cell design transitions from a static, fixed configuration to a dynamic, reconfigurable system. Sections with different Young's moduli can be interchangeably installed in the base unit, allowing the measurement range to be adjusted dynamically based on operational requirements. This enables long-term use across different applications without requiring system unloading or complex redesigns.
3Adaptability or versatility
If the measurement range is increased to cover all possible forces, then adaptability improves, but measurement precision for specific force ranges deteriorates
Solution Approach 1:
Different sections of the load cell have locally optimized Young's moduli tailored for specific force ranges. Each section is designed with material properties specifically suited for its intended measurement range, ensuring high measurement precision for that range. The appropriate section is selected and installed based on the specific application requirements, maintaining both adaptability and precision.
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 solution provides a robust, tunable, and cost-effective load cell with a longer operational lifespan, capable of measuring a wide range of forces without compromising structural integrity, and allows for maintenance without unloading the system.
Implementation Method 1
a plurality of strain gages, said plurality of strain gages being located in the plurality of mounting portions
Implementation Method 2
said annular base unit comprises a plurality of sections having a Young's modulus different from the Young's modulus of the material of the base unit
Data Source
AI summary
A load cell includes an annular base unit where an axial height of the annular base unit is smaller than a diameter of the annular base unit. The annular base unit has a plurality of mounting portions. A plurality of strain gages are located in the plurality of mounting portions. The annular base unit includes a plurality of sections having a Young's modulus different from the Young's modulus of the material of the base unit.