Pallet With Integrated Weighing Via Deck-Deformation Sensing
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Solution Overview
Problem
Existing pallets with integrated weighing functions are complex, expensive, and prone to inaccurate weight measurements, especially when dealing with point loads or stacked empty pallets.
Innovation Solution
A pallet design with a deck and load sensor device where the weighing element deforms in unity with the deck, measuring deformation instead of pure weight, ensuring accurate weight detection under various load conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple load cells are added to the pallet to scale weight, then the weighing function is achieved, but the structure becomes complex and expensive
Solution Approach 1:
The patent merges the weighing function with the pallet deck structure itself. The deck is designed to deform under load, and this deformation is directly measured by sensors integrated into the deck, eliminating the need for separate load cells and support structures. This integration resolves the contradiction by achieving weight measurement without adding complex structural elements.
Solution Approach 2:
The pallet deck serves multiple functions: it supports the load, provides the measuring surface, and acts as the structural element that transmits deformation to the sensors. By making the deck multi-functional, the patent avoids adding separate weighing components, thus reducing structural complexity while maintaining measurement capability.
2Device complexity
If point load measurement is used at one or more positions, then the measurement structure is simple, but the results are inaccurate
Solution Approach 1:
The patent segments the measurement function across multiple sensor elements distributed on the pallet deck. Instead of relying on a single point measurement, multiple sensors detect deformation at different locations, and these measurements are combined to provide accurate total weight detection. This segmentation maintains structural simplicity while improving measurement precision.
3Measurement precision
If traditional load cells are used for weighing, then weight can be measured, but different load scenarios cannot be distinguished
Solution Approach 1:
The patent applies local quality by using an array of sensors at different positions on the deck, each measuring local deformation characteristics. By analyzing the spatial distribution and pattern of deformations across multiple sensor locations, the system can distinguish between different load scenarios (such as uniformly distributed loads versus concentrated point loads) while maintaining the ability to measure total weight accurately.
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 design provides accurate weight measurement by detecting deformation modes, distinguishing between different load scenarios, including stacked empty pallets, with a simple and integrated structure.
Implementation Method 1
the weighing element contacts the deck over a contact area such that the weighing element deforms in unity with the deck
Implementation Method 2
an electrical property of the weighing element varies with the deformation of the weighing element
Data Source
Figure 1
Figure 2
Figure 3~4A
AI summary
The present invention relates to a pallet, or like platform, for supporting a load to be lifted or lowered, comprising: a deck having a deck upper surface for placing the load thereon, a load sensor device, comprising a weighing element included in a measuring circuit, wherein the weighing element contacts the deck over a contact area such that the weighing element deforms in unity with the deck and an electrical property of the weighing element varies with the deformation of the weighing element.