Study On Growth Model And Chamber Environment Control System For Edible Fungus Production

Confronting with the lack of mushroom growth model and low environment control level for edible fungus industrial production, the appropriate environment conditions of Coprinus Comatus growth in the chamber and dynamic growth model based on temperature and humidity are studied. An environment control system is designed based on the microclimate characters in the chamber. Environmental control technology and control strategies are conferred. The main conclusions of are as follows:The effect of climate environment factors on the growth of Fungi and the relationship among them are analyzed. The model of the height,diameter and weight are set up. They showed that the best temperature and relative humidity (RH) combination is 20℃,90%; normal growth temperature ranging from 12℃to 28℃, RH ranging from 70%～95%. Dynamic growth model is set up based on temperature and humidity.The chamber microclimate characteristics are analyzed. The dynamic model of inter temperature and humidity is set up and is simulated by MATLAB. The experiment is done to validate the correctness of the model in summer and autumn. The precision degree of the model get up to±0.6℃,±5 %.A distributed control system is designed based on the environment control demand and the chamber microclimate characteristics. Combined with the industrial production demand and the characteristics of environmental changes, environment control technology is studied; The control strategies under sub-optimum condition is analyzed based on the cost. At last, the environment parameters for the optimal benefits in different seasons are determined.