A kind of LED dimming shunting method
A dimming and dimming signal technology, applied in the field of LED, can solve the problems of poor dimming visual effect, poor dimming effect, large volume, etc., and achieve the effect of improving optical visual effect and high consistency
Active Publication Date: 2018-10-12
GUANGDONG DELOS LIGHTING IND
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] Relevant data research shows that the current methods of dimming and color temperature adjustment: 1. Constant voltage source + dual-channel DC / DC constant current drive; 2. Dual-channel constant current source; but the power efficiency and reliability of these two aspects are low. , Unstable power, poor dimming effect, high cost and other disadvantages
[0004] Among them, constant voltage source + dual-channel DC / DC constant current drive or dual-channel constant current source is selected. Although dimming and color temperature can be realized, both dimming and color temperature share a PWM control interface. Poor consistency of medium color temperature, poor visual effect of dimming, unstable power, low power utilization rate needs to be doubled, high cost
Especially in some demanding occasions, it can't meet people's needs at all, such as hospitals, studios, high-end clubs, etc.
At the same time, the practice of using constant voltage source + dual-channel DC / DC constant current drive is also relatively large in size, which is very inappropriate for some small-volume ultra-thin lamps
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0038] refer to figure 1 , a LED dimming shunting method of the present invention, comprises the following steps:
[0039] Initialize the system, set parameters, and read sampling data;
[0040] Sampling the dimming signal and the shunt signal respectively, and calling the sampling effective value processing algorithm to process, and obtain the dimming signal value and the shunt signal value;
[0041] According to the dimming signal value and shunt signal value, call the dimming shunt smoothing processing algorithm to process it, and obtain the dimming value and shunt value;
[0042] According to the dimming value and the shunt value, save and output the dimming output value or the shunt output value to dim or shunt the LED.
[0043] Wherein, the initialization system specifically includes, for example, initialization definition and assignment of parameters such as I / O, ADC, EEPROM registers and variables. And it can also read the last dimming PWMD saved in EEPROM multiple ...
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
Login to View More Abstract
The invention discloses an LED dimming and shunting method, which includes initializing the system, setting parameters, and reading sampling data; respectively sampling the dimming signal and the shunting signal, and calling the sampling effective value processing algorithm to obtain the dimming signal value and shunt signal value; according to the dimming signal value and shunt signal value, call the dimming shunt smoothing algorithm to process it, and obtain the dimming value and shunt value; according to the dimming value and shunt value, save and output the dimming output value or shunt output value to dim or shunt the LED. The invention independently separates light adjustment and shunting, so that the color temperature is not affected during light adjustment, and the consistency is high. Moreover, the present invention can solve the interference caused by human operation and hardware error by performing accurate calculation and processing on the sampled data, and can smooth the transition of light change by smoothing the dimming and shunting data, effectively improving the visual effect of light. The invention can be widely applied in the field of LED technology.
Description
technical field [0001] The invention relates to the technical field of LEDs, in particular to an LED dimming and shunting method. Background technique [0002] With the development of lighting technology, LED has the advantages of energy saving and environmental protection, high luminous efficiency, long life, etc., known as "green energy", and has become the preferred light source in the lighting industry. However, the improvement of people's life has higher and higher requirements for LED lighting products, especially intelligent control. In order to meet people's diversified applications and secondary energy saving, it has become the demand of many occasions to realize brightness adjustment, color temperature change and personalized setting of lighting environment. [0003] Relevant data research shows that the current methods of dimming and color temperature adjustment: 1. Constant voltage source + dual-channel DC / DC constant current drive; 2. Dual-channel constant curr...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/00
Inventor 杨和良杨智辉
Owner GUANGDONG DELOS LIGHTING IND