Gobo Wheel Calibration via Magnetic Position Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Gobo wheels in lighting devices often have gobos placed in incorrect orientations, leading to misalignment and synchronization issues with control systems, as existing technologies lack effective calibration methods for ensuring accurate positioning of gobos.
Innovation Solution
A system that includes a gobo wheel with sensor-equipped gobos and a central sun gear driven by a motor, utilizing a calibration routine to determine and store the home position of each gobo, allowing for accurate alignment and offset calculation to achieve correct positioning, regardless of initial orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If gobos are placed manually in the gobo wheel, then the device is easy to operate and maintain, but the orientation and positioning accuracy of gobos cannot be ensured
Solution Approach 1:
The system performs preliminary calibration by rotating each gobo to its home position and detecting the exact orientation using sensors. The calibration routine stores the relationship between home positions and desired orientations before normal operation, ensuring accurate positioning without requiring manual orientation during installation.
Solution Approach 2:
The system uses sensors (magnetic or optical) to detect the actual position and orientation of each gobo. This feedback is used by the controller to calculate offset values and adjust the rotation commands, ensuring that gobos are positioned accurately even when manually installed in random orientations.
2Device complexity
If gobo wheel rotation is controlled without calibration, then the system is simpler, but synchronization between control commands and actual gobo positions is lost
Solution Approach 1:
The system performs a calibration routine that rotates each gobo to its home position and stores the relationship between home positions and desired orientations. This preliminary action establishes the synchronization baseline before normal operation, ensuring reliable synchronization without requiring complex continuous adjustment mechanisms.
Solution Approach 2:
The system automatically performs calibration and offset calculation without requiring external intervention. The controller independently determines the relationship between home positions and desired orientations, and automatically adjusts rotation commands using calculated offset values, maintaining synchronization reliability while keeping the system relatively simple.
3Measurement precision
If offset values are calculated for each gobo, then positioning accuracy is improved, but additional computation and storage requirements increase device complexity
Solution Approach 1:
The system calculates and stores individual offset values for each gobo based on its specific characteristics and home position. Each gobo has its own calibration data stored in memory, allowing precise positioning control tailored to each element while keeping the overall system architecture simple and manageable.
Data Source
AI summary
A gobo wheel with automatic detection system that automatically detects a rotational position of the gobo. The rotational position can be detected by a magnetic marking system. Each of the gobos can be randomly placed within the holder. The position of the gobos can be automatically determined during a start up routine for example, and then those positions can be stored and used for later determination of a position.