Battery-less Inventory Beacon with Biometric Verification
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Solution Overview
Problem
Existing inventory management systems in warehouses face challenges with battery-powered reorder buttons, which are costly and impractical to maintain, and lack user identity verification and tracking capabilities, making it difficult to efficiently manage and authorize inventory reordering processes.
Innovation Solution
A battery-less inventory management system that harnesses ambient energy sources such as solar, electromechanical, and triboelectric energy to power a microcontroller, integrated with biometric recognition for user identity verification and tracking, allowing for efficient and authorized reordering of products without the need for traditional power sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If battery-powered reorder buttons are used, then the system can send reorder signals, but the cost of purchasing and replacing batteries increases and maintenance becomes impractical
Solution Approach 1:
The system harvests energy from the ambient environment (light, heat, motion) to power itself, eliminating the need for external battery replacement. The device serves its own power needs by converting available environmental energy into electrical power for its microcontroller and communication functions.
Solution Approach 2:
The system changes the power source parameter from chemical batteries to environmental energy conversion. By using energy harvesting components (photovoltaic cells, thermoelectric generators, piezoelectric elements), the system transforms available environmental parameters into usable electrical power.
2Reliability
If traditional inventory management systems are installed, then inventory tracking is possible, but the installation cost and complexity increase significantly
Solution Approach 1:
The system extracts only the essential functionality needed for inventory management (tracking and reordering) and implements it through a simple button interface. Complex backend processes remain on the server side, keeping the installed device minimal and easy to deploy.
Solution Approach 2:
The microcontroller-based device performs multiple functions: it tracks inventory levels, communicates with the server, harvests energy from the environment, and provides user authentication. This multi-functionality consolidates what would otherwise require multiple separate systems into a single simple device.
3Ease of operation
If simple reorder buttons are used, then the system is easy to operate, but user identity verification and tracking capabilities are lost
Solution Approach 1:
The system merges the simple button press interface with biometric authentication capabilities. The same device that records the reorder also captures user identity through fingerprint or other biometric sensors, combining ease of use with information collection without requiring separate systems.
Solution Approach 2:
The system provides feedback to the user about their authentication status and reorder action. The microcontroller processes biometric data, verifies user identity, and provides confirmation signals, creating a closed-loop system that maintains simplicity while enabling verification.
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 provides a cost-effective, environmentally friendly, and efficient solution for long-term inventory management by enabling continuous operation without battery replacement and ensuring authorized reordering, enhancing supply chain visibility through user tracking and authentication.
Implementation Method 1
A battery-less inventory management system that harnesses ambient energy sources such as solar, electromechanical, and triboelectric energy to power a microcontroller
Implementation Method 2
A battery-less inventory management system that harnesses ambient energy sources such as solar, electromechanical, and triboelectric energy to power a microcontroller
Implementation Method 3
A battery-less inventory management system that harnesses ambient energy sources such as solar, electromechanical, and triboelectric energy to power a microcontroller
Data Source
AI summary
An inventory management system includes a beacon or button connected to a warehouse server. The beacon buttons are placed in or near a product storage area with a number of products. The beacon has a controller and a transceiver to communicate with a server. There is a user input on the front of the beacon and several sensors able to detect a user identity and interaction with the products. When the user input is triggered, the beacon sends a message to the warehouse server including a user identity and other sensor data. Additionally, the beacon includes an energy harvester configured to power the beacon from ambient or user provided energy.