Indirect Container Weight Sensing for Dynamic Load Accuracy
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Solution Overview
Problem
Existing weight measurement technologies, such as strain gauge load cells, struggle to accurately measure dynamic loads in large industrial containers due to deformation and rebound issues, leading to inaccurate weight readings and increased customer uncertainty and operational inefficiencies.
Innovation Solution
A weight sensing device utilizing springs with known properties, a spring deformation sensor, a digital level, and a computing unit to determine weight by measuring spring deformation and container inclination, capable of withstanding dynamic loads and providing real-time weight data through wireless communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional strain gauge load cells are used for weight measurement, then measurement precision is improved, but the system cannot withstand high dynamic loads and metal components deform permanently
Solution Approach 1:
The patent replaces traditional mechanical strain gauge load cells with an acoustic transmission system. Instead of using metal components that deform under load, the system uses acoustic waves transmitted through a medium (such as a container wall or support structure) to detect weight. The acoustic properties (speed, frequency, amplitude) change in response to the load, providing measurement without permanent deformation of structural components.
Solution Approach 2:
The patent introduces an acoustic wave as an intermediary between the load and the measurement system. Rather than directly measuring mechanical deformation of load-bearing components, the system uses acoustic transmission through an intermediary medium to indirectly detect weight changes. This intermediary approach allows the load-bearing structure to remain intact while still providing measurement data.
2Strength
If metal components are made stiffer to bear load, then strength is improved, but measurement precision deteriorates due to reduced deformation
Solution Approach 1:
The patent replaces direct mechanical deformation measurement with acoustic transmission measurement. Instead of relying on metal component deformation (which becomes negligible when components are stiffened for strength), the system uses acoustic wave properties that change in response to load. This substitution allows both high strength components and precise measurement to coexist.
Solution Approach 2:
The patent changes the measurement parameter from mechanical deformation to acoustic transmission characteristics. By measuring changes in acoustic speed, frequency, or amplitude rather than physical deformation, the system can use stiff, high-strength components without losing measurement sensitivity. The acoustic parameters provide the necessary measurement resolution even when mechanical deformation is minimal.
3Productivity
If dynamic loads are applied quickly, then productivity is improved, but measurement precision deteriorates due to rebound and deformation issues
Solution Approach 1:
The patent replaces mechanical deformation-based measurement with acoustic transmission measurement, which can capture dynamic load changes more accurately. Acoustic waves respond immediately to load changes without the inertia and rebound issues of mechanical systems, enabling precise measurement during rapid loading operations.
Solution Approach 2:
The patent employs continuous or periodic acoustic transmission to monitor load changes in real-time. By sending continuous acoustic signals through the medium, the system captures dynamic load variations as they occur, providing accurate weight readings during rapid loading operations rather than only after the loading process completes.
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
Enables accurate, real-time weight measurement of large loads in containers, reducing customer anxiety and increasing operational efficiency by allowing for timely container management and utilization.
Implementation Method 1
a spring operatively connected to the top plate and bottom plate
Implementation Method 2
a spring deformation sensor within the housing and configured for measuring an amount deformation of the spring
Implementation Method 3
a digital level fixed to the top plate and configured for measuring an angle of inclination of the top plate
Implementation Method 4
computing a weight of a container in contact with the housing based in least in part on: a weight determined by comparing the indication of the amount of deformation of the spring to pre-stored data associated with characteristics of the spring
Data Source
AI summary
According to one aspect, this disclosure describes a novel indirect weight sensing device, systems, and related processes. In at least one embodiment, the present systems include one or more springs with known properties, at least one metal plate on which the springs are fastened and through which the container load is transferred from the container to the ground, a spring deformation sensor by which spring deformation is reckoned, a digital level by which general orientation of the upper plate is determined relative to the ground, a computing unit to collect and process data from the spring deformation sensor and digital level, and an antenna or other such hardware to wirelessly connect to another device and interface with the computing unit.