Smart Lighting Sensor Recalibration for Luminaire Changes
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Solution Overview
Problem
Existing lighting control systems for LED-based luminaires require recalibration when sensor positions change or when luminaires are replaced, which is time-consuming and inconvenient for installers and maintenance crews, due to their fixed sensor locations and need for pre-calibration.
Innovation Solution
A smart lighting system that automatically recalibrates sensor readings when the sensor position changes relative to the luminaire or when the luminaire itself is changed, using a Universal Smart Lighting Gateway (USLG) to communicate sensor data and control dimming levels over wired or wireless networks, allowing continuous operation and adaptation to new luminaire configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors are positioned at fixed locations and pre-calibrated, then measurement precision is improved, but device complexity and installation time increase due to recalibration requirements when sensor positions change or luminaires are replaced
Solution Approach 1:
The system performs automatic recalibration without requiring manual intervention. When a luminaire is replaced or sensor position changes, the control device automatically detects the change and recalibrates the sensor readings by comparing new measurements with expected luminaire characteristics, eliminating the need for manual recalibration processes
Solution Approach 2:
The system changes the operational parameters of sensor calibration dynamically. Instead of fixed pre-calibration values, the system adjusts calibration parameters automatically based on detected luminaire characteristics and environmental conditions, allowing the sensor system to adapt to different luminaires and positions without manual recalibration
2Measurement precision
If manual recalibration is performed when sensor position changes or luminaires are replaced, then measurement precision is maintained, but loss of time increases due to recalibration requirements
Solution Approach 1:
The system performs preliminary characterization of luminaires during manufacturing or initial setup, storing expected light output characteristics and spectral properties. When a luminaire is installed or replaced, the system uses this pre-stored information to automatically recalibrate sensors without requiring time-consuming manual procedures
Solution Approach 2:
The control device automatically detects luminaire replacement or sensor position changes and initiates recalibration procedures without human intervention, significantly reducing the time required for installation and maintenance operations while maintaining measurement accuracy
3Measurement precision
If sensors are pre-calibrated for specific luminaires, then measurement precision is improved, but adaptability decreases when handling various luminaire types and configurations
Solution Approach 1:
The system uses a universal control device that can characterize and work with multiple types of luminaires. The device stores characteristic data for different luminaire types and automatically selects appropriate calibration parameters based on the detected luminaire, enabling a single sensor system to accurately measure various luminaire configurations without requiring type-specific hardware
Solution Approach 2:
The system dynamically adjusts calibration parameters based on the detected luminaire type and characteristics. By changing calibration parameters rather than hardware configuration, the system maintains high measurement precision across different luminaire types and configurations, significantly improving adaptability
Data Source
AI summary
A system for sensing luminaire properties and controlling luminaire performance independently of the location, distance or orientation of the sensors relative to the source luminaire device that is being sensed. Thus, the installer and the maintenance crew are freed from issues and activities associated with sensor installation.