Xingli Wu

A kind of imitated environment system for plant growth based on LED light source

Along with the continuous development of LED technology, LED light source gets more attention in the field of research of plant cultivation because of its small volume, long lifetime, good spectrum property, high luminous energy utilization, adjustable light quality and intensity and so on. According to the demand of plant growth environment, the paper designed a kind of imitated environmental system for plant growth based on LED light source. The system with the core of ATmega128L micro-controller, collocate with LED board, humiture sensor and CO2 sensor and so on, could imitate natural temperature, humidity and illumination etc., and adjust all kinds of parameters to set various combination ecotope to fit plant growth. After actual application, it works well.

Design of a Temperature and Humidity Monitoring System for Plant Growth Cabinets Based on Data Fusion

This paper developed a temperature and humidity monitoring system for a plant growth cabinet based on the embedded technology.The monitoring system took a STM32 microprocessor as its core controller, and the accurate acquisition, display and control of environmental factors (including temperature, humidity) in the plant growth cabinet were achieved by the monitoring system. In order to solve the problem of low accuracy of such monitoring system, the means and variances of the temperature and humidity data after fusion were obtained from a batch estimation fusion method based on average values. Then an adaptive weighted fusion was applied on each layer of sensor data in accordance with the optimal weight distribution principle to obtain accurate temperature and humidity values. The testing results shows that the system is quite stable and reliable, which can monitor and display the real-time temperature and humidity existed in the plant growth cabinet accurately and satisfy the needs for control.