Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

LED dimming method and system based on ambient brightness

A technology of ambient brightness and LED driving, applied in the field of LED dimming method and system based on ambient brightness, can solve the problems of high cost of additional lines, long transmission lines of photosensitive signals and dimming signals, and distortion of dimming signals, etc., to avoid Electromagnetic compatibility issues, high dimming accuracy, convenient and feasible dimming scheme

Active Publication Date: 2018-06-12
TRIDONIC
View PDF11 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of this solution is that since the photosensitive device is usually installed together with the lighting fixture to sense the ambient brightness, and the light source driver is installed outside the lamp, the process of transmitting the ambient brightness signal and converting it into a dimming signal requires an additional dimming signal Transmission line and MCU processor
Especially in the field of outdoor lighting, when the distance between the light source driver and the LED lamps and photosensitive devices is relatively long, a long transmission line for the photosensitive signal and dimming signal is required. Distortion of dimming signal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • LED dimming method and system based on ambient brightness
  • LED dimming method and system based on ambient brightness
  • LED dimming method and system based on ambient brightness

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and in combination with specific embodiments.

[0039] A kind of LED dimming method based on ambient brightness provided by the present invention, such as figure 1 shown, including the following steps:

[0040] Step 101, the brightness sensor collects ambient brightness information, generates an ambient brightness signal, and transmits the ambient brightness signal to a PWM signal generator;

[0041] Step 102, the PWM signal generator receives the ambient brightness signal, and determines the dimming level;

[0042] Step 103, the PWM signal generator generates a voltage change signal corresponding to the dimming level according to the dimming level;

[0043] Step 104, the LED driver collects the above-mentioned voltage change signal through the LED driving circuit;

[0044] Step 105, the LED driver determines the dimming level according to the collected voltage...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an LED dimming method and system based on the ambient brightness. According to the invention, ambient brightness information is collected through a brightness sensor, and an ambient brightness signal is generated and transmitted to a PWM (Pulse Width Modulation) signal generator; the PWM signal generator receives the ambient brightness signal and determines a dimming level;the PWM signal generator generates a voltage change signal corresponding to the dimming level on an LED driving line according to the diming level; an LED driver collects the voltage change signal through the driving line, determines the dimming level according to the collected voltage change signal and adjusts the output power so as to achieve the purpose of dimming. The dimming information is transmitted through the voltage change signal on the LED driving line, so that the problems of equipment cost, installation cost and electromagnetic compatibility brought about by additionally arranginga dimming signal transmission line in the prior art are solved.

Description

technical field [0001] The invention relates to the technical field of LED driving, in particular to an LED dimming method and system based on ambient brightness. Background technique [0002] Due to the advantages of energy saving and environmental protection, LED has been widely used as a new generation of lighting source. The LED dimming device can enable the LED lighting system to sense the brightness of the external environment and perform dimming, saving energy while providing a more intelligent and comfortable lighting environment. [0003] In the existing LED lighting system dimming control scheme according to the ambient brightness, after the photosensitive device detects the ambient brightness, it transmits the ambient brightness signal to the MCU (Micro Controller Unit, Micro Control Unit) module, and the MCU module converts the ambient brightness signal into a dimming signal. The light signal and the dimming signal are sent to the LED driver, and the LED driver ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/12
Inventor 钟国基毛秋翔
Owner TRIDONIC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com