Cantilevered Shelf Load Bar With Integrated Weight Sensing
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Solution Overview
Problem
Existing automatic retail devices lack efficient systems for weight sensing and user interaction, leading to inefficiencies in inventory management and product access control.
Innovation Solution
A rack assembly with a load bar and weight sensor that communicates with a microcontroller, featuring vibration and lighting effects for user interaction, and a bin system with interchangeable sizes for various products, integrated with biometric and NFC access control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If weight sensors and communication circuits are integrated into each load bar, then measurement precision and inventory management capability are improved, but device complexity increases
Solution Approach 1:
The system divides the weight sensing function into individual load bars, with each load bar containing its own weight sensor and circuit board. This segmentation allows each component to be independently optimized for precision while maintaining modularity that manages overall system complexity.
Solution Approach 2:
The load bar is designed as a multi-functional component that simultaneously serves as a structural support element, a weight sensing device, and a communication node. By integrating the weight sensor and circuit board into the load bar itself, the system eliminates the need for separate sensing mechanisms and reduces overall device complexity.
2Ease of operation
If vibration motors and light emitters are added to the load bar, then ease of operation and user interaction are improved, but device complexity increases
Solution Approach 1:
The vibration motor and light emitter are integrated into the load bar assembly, merging multiple user interaction functions into a single structural component. This consolidation improves ease of operation by providing tactile and visual feedback at the point of product selection, while the shared circuit board reduces overall system complexity.
Solution Approach 2:
The circuit board acts as an intermediary that coordinates signals between the weight sensor, vibration motor, and light emitter. This intermediary component manages the complexity of multiple functions by providing a centralized control interface that simplifies the interaction between different load bar components.
3Extent of automation
If multiple circuit boards are integrated into the load bar, then extent of automation and communication capability are improved, but manufacturing precision requirements increase
Solution Approach 1:
The circuit board is nested within the load bar structure, with electronic components housed inside the load bar's internal cavity. This nesting arrangement protects the circuit board during assembly and reduces the precision requirements for external mounting, while still enabling automated communication between the weight sensor and retail device controller.
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
Enhances inventory management through precise weight sensing and user authentication, improving product access control and user experience.
Implementation Method 1
The load bar includes a weight sensor configured to sense a weight of products positioned on the load bar
Data Source
AI summary
A rack assembly for use with an automatic retail device. The rack assembly includes a rack body comprising and a load bar configured to mount to the rack body. The rack body includes a fastening element configured to mount the rack body to a portion of the automatic retail device and a main shelf controller disposed within the rack body and in communication with a microcontroller of the automatic retail device. The load bar includes a weight sensor configured to sense a weight of products positioned on the load bar and a circuit board. The circuit board is disposed on the load bar and in electrical communication with the weight sensor and the main shelf controller. The circuit board transmits a signal corresponding to the weight sensed by the weight sensor to the microcontroller via the main shelf controller.