Instrument Control Device Stepwise Motor Speed Adjustment
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Solution Overview
Problem
Existing variable lighting and camera systems require manual fine adjustments, which are difficult to achieve without additional buttons on the remote controller, complicating operations due to increased key usage and lack of specific methods for precise adjustments.
Innovation Solution
A control device that varies the rotational speed of motors stepwise, allowing for precise control of lighting direction and focal length without additional buttons, using a receiver to decode communication signals and a motor controller to adjust pan, tilt, and focus motors based on received commands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a push button for fine adjustment is added to the remote controller, then fine adjustment capability is improved, but device complexity and ease of operation deteriorate due to increased number of keys
Solution Approach 1:
The existing direction adjustment push button is made multi-functional by enabling it to serve both coarse adjustment and fine adjustment purposes. When held down continuously, it performs coarse adjustment at first speed; when pressed and released repeatedly, it performs fine adjustment at second speed. This eliminates the need for separate fine adjustment buttons while maintaining both adjustment capabilities.
Solution Approach 2:
The system dynamically changes the operational mode of the push button based on the duration and pattern of activation. The controller distinguishes between continuous pressing (coarse adjustment mode) and intermittent pressing (fine adjustment mode), allowing a single button to provide different adjustment granularities depending on user interaction pattern.
2Measurement precision
If a push button for fine adjustment is added to the remote controller, then fine adjustment capability is improved, but ease of operation deteriorates due to increased number of keys to be operated
Solution Approach 1:
The existing direction adjustment push button is made multi-functional by enabling it to serve both coarse adjustment and fine adjustment purposes. When held down continuously, it performs coarse adjustment at first speed; when pressed and released repeatedly, it performs fine adjustment at second speed. This eliminates the need for separate fine adjustment buttons while maintaining both adjustment capabilities.
Solution Approach 2:
The system automatically determines the adjustment mode based on the user's pressing pattern without requiring explicit mode selection. The controller detects whether the user is performing coarse or fine adjustment by monitoring the duration and rhythm of push button activation, making the system self-adaptive to user intentions.
3Measurement precision
If automatic control is used to stop at target position, then positioning accuracy is improved, but adaptability deteriorates as manual adjustment becomes more difficult
Solution Approach 1:
The system dynamically switches between automatic control mode (for rapid movement to target positions) and manual fine adjustment mode (for precise positioning). The controller detects when the instrument is near the target position and automatically stops, then allows manual push button input for any necessary fine adjustments, combining both automatic efficiency and manual precision.
Solution Approach 2:
The system performs preliminary automatic movement to the target position using stored target position data, then transitions to manual fine adjustment mode for the final precise positioning. This two-stage approach combines the speed of automatic control with the precision of manual adjustment.
Data Source
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AI summary
An instrument control device includes a variable mechanism including a motor configured to adjust a state of an instrument, and a variable controller configured to variably control the motor with a command signal. The variable controller includes a receiver configured to receive a communication signal output from a remote controller and output a received signal in accordance with the communication signal, and a motor controller configured to increase the command signal stepwise starting from input of the received signal until a rotational speed of the motor reaches a predetermined rotational speed.