Lighting Irradiation Safety Control Using Target Range Thresholds
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Solution Overview
Problem
High-power lighting and laser sources in stage lighting pose safety hazards due to potential burns and fires, and existing safety measures are complex and slow in response.
Innovation Solution
A lighting control method and system that uses image acquisition and neural networks to detect designated targets, determine their distance and output power, and trigger protective measures when certain thresholds are met, including reducing power or adjusting projection angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If high-power lighting and laser sources are used to achieve diverse lighting effects and enhance stage atmosphere, then lighting effectiveness and versatility are improved, but safety hazards increase due to potential burns and fires
Solution Approach 1:
The system performs preliminary identification of designated targets (humans and flammable objects) before lighting irradiation occurs. By pre-establishing safety zones and detecting target positions in advance, the system can prevent harmful irradiation before it happens, rather than merely responding after detection.
Solution Approach 2:
The system continuously monitors the irradiation area for designated targets and provides real-time feedback to the lighting control. When targets are detected within the influence range, the system automatically adjusts lighting parameters or shuts down the light source, creating a closed-loop safety control mechanism.
2Reliability
If complex safety protection measurements are implemented to ensure safety, then safety protection capability is improved, but response speed decreases due to complex calculations
Solution Approach 1:
The system pre-calculates and stores safety parameters such as influence range, distance thresholds, and power thresholds before operation. During actual operation, the system only needs to compare real-time detection data against these pre-established parameters, avoiding complex real-time calculations and achieving fast response.
Solution Approach 2:
The system transforms complex safety assessment into simple parameter comparisons by defining critical thresholds (distance threshold, power threshold, influence range). The safety determination reduces to checking whether detected parameters exceed these predefined thresholds, significantly simplifying the computational burden while maintaining reliability.
Data Source
AI summary
A lighting control method includes steps of: obtaining an influence range of lighting irradiation of a light source; recognizing a plurality of designated targets within a certain range; making a marking for each of the designated targets and obtaining a current distance between each of the designated targets and the light source; obtaining a current output power of the light source; and determining whether the marking enters the influence range, whether the current distance is less than a preset distance threshold, and whether the output power is greater than a preset power threshold, if all yes, outputting a protection signal. According to the present invention, safety can be visually and quickly determined in an easy way through three conditions including the influence range, the current distance and the output power, without complex energy density calculation.