Data Collection of Digital Monitoring System for Agricultural Facilities Environment

In order to realize the intelligent control of agricultural facility greenhouse environment cluster, paper designs and implements an cluster monitoring system based on RS485 bus Modbus protocol. The consists on-site data acquisition part, remote centre software part communication protocol part. We use with between host microcontrollers each greenhouse. uses BP neural network PID algorithm achieve environment. Use Qt design a human-computer interaction interface cluster. experimental results show that can correctly collect temperature, humidity light intensity environment, effectively environmental parameters through action relay.