Abstract
According to the request of the facility agriculture, the parameters acquisition system is designed, into which the temperature, humidity, CO2 concentration and illumination have been integrated. The light source control system for adjusting LED spectrum is designed together with relation of the plants and LED optic character, used as the supplementary lighting source of plant environment. The monitoring system replaces of traditional manual monitoring mode, so the automation has been improved greatly. Based on the different plants, different LED spectrum is employed to irradiate the plants, which is benefit to the plant growth. Experiments show that whole system works stably, temperature error is ±2.4%, humidity error is ±3.1%, CO2 concentration error is ±0.7%, illumination error is ±1.9%, and the LED spectrum can be adjusted in 255 grades automatically or manually.
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