A Design of Led Light System Used For Greenhouse Plants Based on MCU

In order to satisfy the demand for the light environment in greenhouse plants,the authors broke through the limitations of traditional point and line sources according to the characteristic of selective absorption from light of plants,adopted the concept of modular array design,and designed the LED light system used for greenhouse plants based on MCU.The LED light system has numbers of primitive modules that are composed of red light,blue light,far-red light and ultraviolet light LEDs.Also,the LED light system is based on STC12C5A60S2 MCU to real-time monitor the temperature of LED circuit board and light intensity.The LED light system utilizes PWM signal to control the luminance of red or blue light.The LED light system can satisfy the light demand of the greenhouse crops in different periods of the growth.Besides,this LED light system can dynamically adjust the quality,intensity,cycle of light and work mode.The practical application shows that this LED light system has the features of easy operation and accurate detection,and is liable to popularize with its strong usability.