Modular Power Tool Control for Injury Mitigation and Tool Compatibility
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Solution Overview
Problem
Power tools with active injury mitigation technology require improved control systems that can accommodate different types and configurations, ensuring compatibility and efficient operation across various power tools while preventing unauthorized use and allowing for feature upgrades through replaceable modules.
Innovation Solution
The implementation of a control system with interchangeable replaceable modules containing processors that communicate with the main control circuit, enabling the power tool to determine its type and execute specific software for monitoring and controlling functions, and incorporating active injury mitigation technology within the replaceable module to stop or retract blades in case of contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a control system with interchangeable replaceable modules is implemented, then adaptability and versatility are improved, but device complexity increases
Solution Approach 1:
The control system is divided into a main control circuit and interchangeable replaceable modules. Each module contains a processor and can be selectively installed to provide different functions. This segmentation allows the system to adapt to different power tool types without redesigning the entire control system, resolving the contradiction between versatility and complexity.
Solution Approach 2:
The main control circuit is designed with universal communication capabilities that can interface with multiple types of replaceable modules. The modules themselves are designed to be compatible across different power tool configurations. This universality allows a single control system architecture to support multiple functions and tool types, improving adaptability while maintaining manageable complexity through standardized interfaces.
2Reliability
If active injury mitigation technology is integrated into replaceable modules, then safety is improved, but manufacturing complexity increases
Solution Approach 1:
Active injury mitigation technology is integrated specifically into the replaceable modules rather than being distributed throughout the entire control system. This segmentation concentrates safety functions in discrete, manufacturable units. The modular architecture allows safety features to be manufactured and tested independently before integration, simplifying the overall manufacturing process while maintaining high safety standards.
3Adaptability or versatility
If replaceable modules with processors are used, then adaptability is improved, but loss of information increases
Solution Approach 1:
The communication protocol between replaceable modules and the main control circuit incorporates feedback mechanisms that verify data integrity. When processors in the modules exchange information with the main control, confirmation signals ensure that no information is lost or corrupted during transmission. This feedback system maintains reliable communication while supporting the adaptability provided by multiple programmable modules.
Data Source
AI summary
Control systems for power tools such as table saws, miter saws, band saws, hand-held circular saws, jointers, shapers, routers, up-cut saws and other machinery are disclosed. The control systems are particularly relevant to power tools equipped with active injury mitigation technology, and to a set, collection, family, series, group or suite of different types of power tools.