Multi-Range Load Cell Assembly for Automatic Torque Range Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing load cells require manual switching during operations due to varying target torques, leading to inefficiencies and human errors in torque measurement accuracy.
Innovation Solution
A multi-range load cell assembly with a controller that automatically switches between measurement ranges based on operating parameters to maintain minimum accuracy, using a load cell body with multiple sensing units and a controller for data communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single-range load cell is used, then the device complexity is reduced, but the measurement precision deteriorates when target torque varies outside the fixed range
Solution Approach 1:
The load cell body is designed to perform multiple measurement functions by switching between different ranges. A single load cell assembly incorporates multiple sensing units with different measurement ranges, allowing it to universally handle various target torque requirements without needing multiple dedicated load cells.
Solution Approach 2:
The load cell assembly transitions from a static single-range configuration to a dynamic multi-range system. The controller automatically switches between different sensing units based on the target torque value, enabling the measurement range to adapt dynamically to operating conditions while maintaining measurement precision.
2Measurement precision
If manual load cell switching is implemented, then the measurement precision is maintained for different torque ranges, but the productivity deteriorates due to operational interruptions
Solution Approach 1:
The load cell assembly performs self-service by automatically selecting the appropriate measurement range without external intervention. The controller monitors the target torque and autonomously switches between sensing units, eliminating the need for manual load cell replacement and maintaining continuous operation.
Solution Approach 2:
The system implements feedback control where the controller continuously monitors the target torque value and uses this information to determine the appropriate measurement range. This closed-loop approach ensures measurement precision is maintained while enabling automatic range selection that improves productivity.
3Measurement precision
If manual load cell switching is implemented, then the measurement precision is maintained for different torque ranges, but the reliability deteriorates due to human errors
Solution Approach 1:
The automatic range selection system eliminates human intervention in the load cell switching process, removing the source of human errors. The controller autonomously manages range selection based on target torque, ensuring consistent and reliable measurements without operator involvement.
Solution Approach 2:
The feedback mechanism ensures that the correct measurement range is always selected based on the target torque value. This systematic approach prevents erroneous manual selections and maintains measurement reliability across different operating conditions.
4Adaptability or versatility
If multiple load cells are installed for different ranges, then the adaptability is improved for various torque requirements, but the device complexity increases
Solution Approach 1:
Instead of installing multiple separate load cells, the invention consolidates multiple measurement ranges into a single universal load cell assembly. This multi-functional design provides the adaptability of multiple load cells while reducing the overall device complexity through integration.
Solution Approach 2:
The invention merges multiple sensing units with different measurement ranges into a single integrated load cell assembly. This combination approach maintains the versatility to handle various torque requirements while simplifying the overall system architecture compared to using separate load cells.
Data Source
Figure 1
Figure 2A
Figure 2B
AI summary
Aspects of the present disclosure relate to a multiple range load cell capable of automatically switching measuring range and method for operating the multiple range load cell.