Construction of intelligent greenhouse control system based on CAN bus

An intelligent greenhouse control system based on CAN bus bas been designed according to the needs of greenhouse control. Distributed network control structure has been used and the main control unit uses STM32VBT6 ARM processor as control core to fulfill the function of system programming, command receiving and system status displaying; distribution node uses STM32CBT6 ARM processor as control core to monitor the inside temperature and humidity of the greenhouse and to control the implementation of the motor; thus, there are multiple control modes of the system: either control the temperature according to the pre-set control logic or to the climate characteristics of the area, so that the inside temperature and humidity value can be maintained optimal appropriate to crop growth. Experimental results show that: the designed greenhouse intelligent control system has the characteristics of stable performance, economy, convenience and versatility, etc., and is worthwhile to be promoted.