Multi-Modal Power Tool Interfaces for Adaptive Force Control
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Solution Overview
Problem
Conventional power tool user interfaces face limitations such as large physical size, limited customization for different user profiles, lack of fail-safe features, and inadequate tactile or haptic feedback, along with insufficient real-time monitoring of user input and physical force sensing.
Innovation Solution
A scalable multi-modal sensing architecture for power tools that includes pressure sensing switches providing tactile or haptic feedback, real-time monitoring of user input, and force sensing, integrated with network data transmission for enhanced safety and productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional electromechanical and mechanical switches are used in power tool user interfaces, then the device structure is simple and reliable, but the physical size is large, weight is heavy, and customization capability is limited
Solution Approach 1:
The patent replaces conventional electromechanical and mechanical switches with force sensing elements that detect user input through force or pressure. This substitution eliminates moving parts, reducing physical size and weight while enabling digital signal processing for enhanced customization capabilities across multiple user profiles.
Solution Approach 2:
The patent implements customization by allowing different activation force thresholds and sensitivity parameters to be programmed for different user profiles. The force sensing elements can be calibrated to recognize various force levels, enabling the same physical interface to adapt to different user needs without changing the hardware structure.
2Ease of operation
If conventional pressure sensing switches are used, then the device structure is simple, but tactile or haptic feedback is not provided
Solution Approach 1:
The patent incorporates force sensing elements that provide real-time tactile and haptic feedback to the user through the interface. The system detects user input forces and can respond with variable feedback characteristics, allowing users to sense the system's state and confirm activation through tactile sensation, thereby improving ease of operation.
3Reliability
If conventional user interfaces are used, then the device structure is simple, but real-time monitoring of user input and physical force sensing is insufficient
Solution Approach 1:
The force sensing elements continuously monitor user input and physical force applied to the interface in real-time. The system automatically detects activation forces, validates user intent, and can trigger safety protocols or alerts without requiring additional monitoring hardware, thereby improving reliability through self-monitoring capabilities.
Solution Approach 2:
The patent replaces mechanical switch mechanisms with electronic force sensing elements that provide continuous digital monitoring of user input. This substitution enables real-time data acquisition and analysis of activation forces, improving safety monitoring and user input validation while reducing mechanical complexity.
4Reliability
If conventional switches are used, then the device structure is simple, but fail-safe features are limited
Solution Approach 1:
The force sensing elements provide continuous feedback on the force applied to the interface, enabling the system to detect abnormal conditions such as excessive force, unintended activation, or improper usage. The control system can respond to these feedback signals by triggering fail-safe protocols, locking the interface, or alerting the user, thereby enhancing safety without requiring complex additional hardware.
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
Enables customizable activation force, real-time feedback, and networked safety alerts, improving user interface functionality and operational safety in power tools.
Implementation Method 1
The activation switch may include one or more force sensing elements 105. The one or more force sensing elements 105 may be configured to detect and/or measure force and/or pressure distribution across some or all of a surface of the activation switch.
Implementation Method 2
The one or more strain sensing elements 105 may include two-dimensional or three-dimensional strain sensing elements. The one or more strain sensing elements 105 may be configured to detect and/or measure bending and/or flexing of the activation switch.
Data Source
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AI summary
A method may include receiving data from one or more sensing elements associated with a power tool. The method may also include measuring the detected data. The method may further include computing one or more data parameters based on the measuring. The method may include determining whether to permit operation of the power tool based on the data parameters. The method may further include permitting operation of the power tool when the data parameters satisfy an operation condition. The method may also include altering operation of the power tool when the data parameters does not satisfy the operation condition by performing at least one of: generating an alarm, or preventing operation of the power tool.