Hand-Held Power Tool Target-Reached Feedback via Motor Shutdown Reason
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Solution Overview
Problem
Existing hand-held power tools lack a clear indication to users whether they have reached a target operation, such as completing a screwing task, leading to uncertainty about the tool's functionality and operation completeness.
Innovation Solution
A method is introduced where a hand-held power tool activates a target reached indication mode, ascertains the shutdown reason of the drive motor, and displays this information to the user through a display unit, allowing immediate verification of operation completion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If no target reached indication mode is activated, then the device complexity remains low, but the user cannot verify whether the hand-held power tool has reached the target operation
Solution Approach 1:
The control unit activates a target reached indication mode that provides feedback to the user about whether the drive motor has reached its target operation. The system monitors the shutdown reason of the drive motor and displays this information through the display unit, creating a closed-loop feedback system that informs users of operation completion status.
Solution Approach 2:
The control unit acts as an intermediary between the drive motor and the display unit. It receives information about the shutdown reason from the drive motor control system and processes this information before presenting it to the user through the display unit, mediating the information flow between system components.
2Ease of operation
If shutdown reason is ascertained and displayed, then the user can immediately verify operation completion, but the device requires additional control logic and display functionality
Solution Approach 1:
The system performs self-verification by automatically monitoring its own operational status. The control unit tracks the shutdown reason of the drive motor and autonomously determines whether the target operation has been reached, eliminating the need for manual verification by the user.
Solution Approach 2:
The system provides immediate feedback to the user about the shutdown reason and operation completion status. This feedback mechanism allows users to quickly verify whether the intended operation was successfully completed without requiring additional manual checking steps.
3Ease of operation
If target reached indication is provided through display unit, then user-friendliness increases, but the device requires additional display hardware and control functions
Solution Approach 1:
The control unit serves as an intermediary that processes the shutdown reason information from the drive motor control system and translates it into user-friendly display information. This intermediary function allows the display unit to present complex motor control data in a simplified format that users can easily understand.
Solution Approach 2:
The display unit provides visual feedback to users about the operational status and completion of tasks. This feedback mechanism enhances user-friendliness by making the system's state transparent and allowing users to verify operation completion at a glance.
Data Source
AI summary
A method for indicating whether a hand-held power tool has reached a target is disclosed. The hand-held power tool includes a drive motor and the method includes (i) activating a target reached indication mode by way of a control unit, (ii) ascertaining a shutdown reason for the drive motor, and (iii) displaying the reaching of the target by way of a display unit as a function of the shutdown reason.