Smart Power Cord Monitoring for Tool Tracking and Maintenance
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Solution Overview
Problem
Existing solutions for monitoring and maintaining corded power tools are inadequate in providing real-time location tracking, predictive and preventive maintenance, and inventory management, often being costly, tool-specific, and hindered by environmental contaminants, and do not effectively prevent theft or misuse.
Innovation Solution
A smart cord equipped with a connectivity module, sensors (including GPS, current, and motion sensors), a switching device, and a communication module that allows for real-time monitoring and alerts, enabling predictive maintenance, location tracking, and inventory management through a user interface device connected via Wi-Fi, Bluetooth, or cellular networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If RFID and WiFi components are incorporated into power tool accessories for communication and tracking, then real-time monitoring and location tracking capabilities are improved, but the cost and complexity of the system increase significantly
Solution Approach 1:
The patent introduces a gateway device as an intermediary component that bridges the smart cord, power tool, and cloud server. The gateway handles complex communication protocols (WiFi, Bluetooth, NFC) and data processing, while the smart cord itself remains relatively simple. This mediator approach allows real-time monitoring capabilities without requiring the entire system to be complex, as the gateway absorbs much of the technical complexity.
Solution Approach 2:
The smart cord automatically performs self-registration with the gateway device upon connection, and the system automatically tracks and reports tool location, usage patterns, and health status without manual intervention. This self-service capability reduces the need for complex user interfaces and manual configuration, thereby reducing perceived system complexity while maintaining comprehensive monitoring.
2Adaptability or versatility
If smart control modules with multiple communication protocols are integrated into power cords, then remote control and monitoring capabilities are improved, but the manufacturing cost and device complexity increase
Solution Approach 1:
The gateway device is designed as a universal platform that supports multiple communication protocols (WiFi, Bluetooth, NFC, power line communication) and can work with various power tool types and brands. This multi-functional design allows a single gateway to replace multiple specialized devices, reducing overall system cost while maintaining versatility. The smart cord can connect through different protocols depending on what the gateway supports.
Solution Approach 2:
Rather than embedding expensive multi-protocol communication modules directly into every power cord, the patent uses the gateway as an intermediary that provides protocol conversion and communication flexibility. The smart cord uses simpler communication hardware, while the gateway handles the complex multi-protocol interactions, thereby reducing manufacturing costs while maintaining adaptability.
3Reliability
If comprehensive sensor arrays and tracking devices are added to power tools, then predictive maintenance and location tracking are improved, but the weight and portability of the tool deteriorate
Solution Approach 1:
The monitoring system is segmented into three separate components: (1) simple sensors in the power cord that monitor basic electrical parameters, (2) a lightweight GPS tracker that can be attached to or integrated into the tool handle, and (3) a gateway device that handles data processing. This segmentation distributes the weight and complexity, allowing predictive maintenance capabilities without significantly increasing tool weight, as the heavy processing is done externally.
Solution Approach 2:
The patent extracts the heavy data processing and communication functions from the power tool itself and places them in external devices (smart cord and gateway). The power tool only needs minimal sensors and a communication interface, significantly reducing its weight. The complex analytics for predictive maintenance are performed externally by the gateway and cloud server, not within the tool.
4Loss of information
If existing power tools are equipped with smart tracking and monitoring hardware, then real-time location and health monitoring are improved, but the compatibility and ease of retro-fitting deteriorate due to tool-specific requirements
Solution Approach 1:
The gateway device serves as a universal intermediary that adapts to different power tool types and brands. It supports multiple communication protocols and can work with various smart cord models. This mediator approach allows the system to achieve accurate tracking data without requiring tool-specific customization, as the gateway handles the adaptation layer between diverse tools and the centralized monitoring platform.
Solution Approach 2:
The smart cord and gateway system is designed as a universal solution that can monitor and track various types of power tools (drills, saws, grinders, etc.) from different manufacturers. The system uses standard electrical connections and supports multiple communication protocols, enabling retro-fitting to existing tools without tool-specific modifications. This universality maintains tracking accuracy across different tool types while improving adaptability.
Data Source
AI summary
A smart cord for a corded power tool comprising: a connectivity module connected to the corded power tool and to a power socket through an AC power cord; sensors electrically coupled with the corded power tool; a GPS module coupled with at least a location sensor for determining set of coordinates associated with the corded power tool; a switching device electrically coupled with a controller unit in the connectivity module; a user interface device in communication with the controller unit by a communication module. The controller unit performs: receiving input signals from the sensors; determining based on the received input signals or set of coordinates, whether the received input signal exceeds a threshold parameter and/or the corded power tool is located inside a predetermined boundary area; and generating and transmitting an alert signal to the user interface device.