Lighting Fixture Position Sensor and Calculation Unit
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Solution Overview
Problem
Existing stage projectors have complex and expensive control systems for movable elements, making them inefficient and costly to operate effectively.
Innovation Solution
A lighting fixture with a position sensor and calculation unit to detect and determine the position of movable elements, coupled with a transmission assembly and rotary actuator, allowing for simple and economic control of movements, and an energy management system to power sensors during external power loss, utilizing passive movement detection and energy generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a complex control system with multiple sensors and actuators is used to control movable elements in stage projectors, then positioning accuracy and control precision are improved, but device complexity and cost increase
Solution Approach 1:
The patent combines the position sensor and calculation unit into an integrated system that processes positional data and determines absolute positions through computational algorithms. This merging reduces the need for separate complex control components while maintaining positioning accuracy through software-based calculations.
Solution Approach 2:
The patent replaces complex mechanical control systems with a computational approach. The calculation unit uses algorithms to determine absolute positions based on sensor data, substituting mechanical complexity with software-based position determination that achieves similar or better precision.
2Measurement precision
If continuous power is supplied to position sensors and calculation units to maintain accurate positioning, then measurement precision is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic power supply to the position sensor and calculation unit during non-operational periods. Instead of continuous power, the system activates these components at specific intervals or when needed, maintaining positioning capability while significantly reducing energy consumption during idle states.
Solution Approach 2:
The calculation unit performs self-calibration and maintains positioning information through computational methods that reduce the need for continuous sensor activation. The system uses stored data and algorithms to maintain positioning accuracy without requiring constant power to all components.
Data Source
AI summary
A lighting fixture comprising:at least one movable element;at least one rotary actuator coupled to the movable element to move the movable element;a transmission assembly coupled to the rotary actuator and to the movable element to transfer the movement between the rotary actuator and the movable element;at least one position sensor coupled to a component selected in a group comprising the transmission assembly, the rotary actuator and the movable element; the position sensor being configured to detect the position of the component;a calculation unit coupled to the position sensor and configured to determine a displacement of the component based on the positions detected by the position sensor.