Waste Bin Scale Load Cell Cantilevered Load Measurement
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Solution Overview
Problem
Existing systems for measuring cantilevered loads are often bulky, complex, and prone to inaccuracies due to variations in load position, particularly in waste bin handling operations.
Innovation Solution
The development of compact and robust waste bin scale systems incorporating load cells with offset strain gauge mounting surfaces and bridge arrangements of strain gauges to accurately measure cantilevered loads, compensating for bending moments and end loads during handling operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing systems are used to measure cantilevered loads, then load measurement capability is provided, but the systems are bulky and overly complex
Solution Approach 1:
The system is divided into separate functional modules: load cells for force measurement, strain gauges for deformation detection, and a control system for data processing. Each component performs a specific function, allowing the overall system to be less complex while maintaining measurement capability
Solution Approach 2:
Traditional mechanical linkages and levers are replaced with electrical strain gauges and electronic signal processing. The mechanical deformation is converted to electrical signals that can be processed digitally, reducing mechanical complexity while preserving measurement function
2Measurement precision
If existing systems are used to measure cantilevered loads, then load measurement is provided, but the systems are prone to inaccuracies when load position varies
Solution Approach 1:
The system continuously monitors load position through strain gauge measurements and provides feedback to the control system. This feedback is used to dynamically adjust measurement calculations, compensating for position variations and maintaining accuracy across different load positions
Solution Approach 2:
The system changes measurement parameters based on detected load position. When position varies, the system adjusts calibration factors and calculation methods to account for the new position, ensuring measurement accuracy is maintained regardless of where the load is placed on the cantilever
3Device complexity
If compact and robust waste bin scale systems are developed, then device complexity is reduced, but measurement precision may be compromised
Solution Approach 1:
Multiple functions are merged into integrated components. The load cell structure incorporates strain gauge mounting surfaces directly into its geometry, and the control system integrates position detection and load measurement functions. This merging reduces the number of separate parts while maintaining measurement precision through careful design
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 precise and accurate load measurements with minimal positional sensitivity, ensuring safe and efficient waste bin handling by maintaining load measurement accuracy below 0.5% threshold, and enabling real-time adjustments for varying load positions.
Implementation Method 1
an arrangement of strain gauges to sense deformations at least at one or more locations on the at least one pair of offset strain gauge mounting surfaces
Data Source
AI summary
A waste bin scale to measure a cantilevered load carried by lift members of a lift system. The waste bin scale includes a base coupleable to the lift system, a lift member support system; and a plurality of load cells. Each load cell is coupled between the base and the lift member support system, and includes a structural member configured to deform during application of a load applied by the waste bin, where the deformation is indicative of the applied load. Other related waste bin scales, load cells therefor and methods of measuring waste bin scale loads are also provided.