LED energy-saving street lamp system capable of self-adapting to environment lighting effect and illumination adjusting method of LED energy-saving street lamp system

The LED energy-saving street light system with adaptive ambient light effect decouples ambient light and self-emission by using micro-perturbation modulation signal, which solves the self-excitation interference problem of LED street light system, realizes precise illuminance adjustment and energy-saving control, and improves the energy efficiency and traffic safety of the system.

CN121692501AActive Publication Date: 2026-03-17盐城市路灯管理处 +1
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Patent Information

Application Number
CN202512046372.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-31
Publication Date
2026-03-17
Estimated Expiration
2045-12-31

AI Technical Summary

Technical Problem

Existing LED street light systems suffer from self-excitation interference when detecting ambient brightness, leading to repeated fluctuations in lighting brightness and increased power consumption. This makes it difficult to cope with complex and changing weather and road conditions, and prevents the achievement of precise energy-saving control.

Method used

The LED energy-saving street light system with adaptive ambient light effect achieves precise illuminance adjustment through the coordinated operation of the ambient light sensing module, traffic flow monitoring module, LED driver power supply and main control module. It uses micro-perturbation modulation signal to decouple ambient light and self-emission, and combines digital signal processing algorithm to extract the road surface reflectivity coupling coefficient.

Benefits of technology

It improves the energy efficiency and control precision of the lighting system, ensures traffic safety under adverse weather conditions, extends equipment lifespan, and achieves green energy saving and precise control.

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Abstract

The invention discloses an LED (Light Emitting Diode) energy-saving street lamp system self-adaptive to an ambient light effect and an illumination adjusting method thereof, and belongs to the technical field of novel illumination control and green energy conservation. The system comprises a light environment sensing module, a traffic flow monitoring module, an LED driving power supply and an electroluminescent illumination module composed of a plurality of light emitting diodes. The main control module is configured to execute active lighting effect decoupling logic, namely, when the electroluminescent lighting module keeps steady-state lighting, the driving power supply is controlled to inject a micro-disturbance modulation signal which cannot be perceived by human vision into output current, and illuminance response data of the light environment perception module are synchronously collected; the road surface reflectivity coupling coefficient is obtained in real time by calculating the change ratio of the response data to the modulation signal, then the reflected light component excited by the street lamp itself is accurately removed from the total illumination value, and the pure environment background illumination is decoupled. The problems of misoperation and energy waste caused by self-luminous interference of a traditional light-operated street lamp are solved.
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