Research and development of a fuzzy control system of greenhouse microclimate for button mushroom

Abstract

Edible mushrooms are one of the important agricultural products, and their ingredients, having huge economic benefits, are beneficial to human health. Button mushrooms are the most commercially grown mushrooms globally. With the progress of science and technology, the method for growing mushrooms has progressed to the mode of closed greenhouse cultivation. With a stable environment that is not influenced by external climate changes, greenhouse microclimate can be used to replace natural climate. However, the commonly used mushroom greenhouse control system in Taiwan used an on/off control mode, which were incapable of enabling precise adjustments based on the greenhouse size and current greenhouse conditions. Instead, the system parameters had to be set by mushroom farmers based on their own experience, where sufficient experience was required to find the optimal results. To this end, this study proposed a Fuzzy control system of greenhouse microclimate for mushrooms to solve this problem, where a Fuzzy microclimate regulator was employed to adjust the CO2 concentration in a real-time manner, and the information was transmitted to mobile devices instantly through technology of internet of things, which enabled farmers to keep abreast of the greenhouse conditions at any time. The performance of three control methods was compared in this study, in which the results of mushroom spawn running were used to verify that this system could exactly achieve higher plant quality.