Load Detection Modules for AGV Shelf Stability
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Solution Overview
Problem
In warehouse environments where automated guided vehicles (AGVs) are used, there is a need to ensure the stability of shelving racks or goods transported by AGVs, as shifts in the center of gravity due to uneven loading or AGV movements can lead to capsizing of shelves.
Innovation Solution
A load detection system comprising load modules with electronic load cells, mounting bases, and platforms that support loads and provide raw weight data, coupled with a weighing acquisition module and a server that processes data to simulate the location of the center of gravity and determine if the load is in an unsafe situation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If goods are placed on shelves or transported by AGVs without load detection, then the warehouse operation is simple and fast, but the stability of shelving racks or goods cannot be ensured, leading to potential capsizing
Solution Approach 1:
The load detection system is segmented into multiple independent load modules, each equipped with electronic load cells. These modular units can be distributed throughout the warehouse and integrated with AGVs, allowing stability monitoring without requiring a monolithic complex system. Each module independently measures weight and transmits data to the central system.
Solution Approach 2:
Electronic load cells serve as intermediary devices that indirectly measure the weight and center of gravity of loads without requiring direct physical contact or complex mechanical measurement systems. The load cells convert mechanical force into electrical signals, which are then processed by the control system to determine load stability and center of gravity position.
2Measurement precision
If electronic load cells are used to detect load weight, then accurate weight data is obtained, but the system becomes more complex compared to simple weight estimation
Solution Approach 1:
The system replaces complex mechanical measurement mechanisms with electronic load cells that use piezoelectric or strain gauge technology to convert mechanical force directly into electrical signals. This substitution provides high measurement precision while reducing mechanical complexity, as the electronic components are smaller, more reliable, and easier to integrate than traditional mechanical scales or balance systems.
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 system effectively detects and prevents unsafe loading conditions by accurately determining the center of gravity of loads, thereby ensuring the stability of shelves during transport by AGVs and preventing capsizing.
Implementation Method 1
an electronic load cell for converting weight or force applied on the electronic load cell by the load into an electrical signal
Data Source
AI summary
There is provided a load detection device for use in a warehouse. The load detection device includes one or more load modules (100) configured to support a load (200) and obtain a data of the load (200). Each of the one or more load modules (100) includes an electronic load cell (101) for converting weight or force applied on the electronic load cell (101) by the load (200) into an electrical signal to provide raw weight data of the load, a mounting base (102) coupled to the electronic load cell (101) for supporting the electronic load cell (101) to be placed against a ground, and a platform (103) coupled to an upper part of the electronic load cell (101) to increase an area of contact with the load (101).