What is the system principle of greenhouse automatic control system?

The intelligent greenhouse automatic control system uses RS485 bus to send the sensor information to the 485-to-232 converter according to the information collected by sensors such as temperature and humidity, soil humidity and soil temperature in the greenhouse, and connects with the upper computer for display, alarm and inquiry. The monitoring center displays and stores the received sampling data in the form of table, and then compares it with the set alarm value. If the measured value exceeds the set range, it will display alarm or voice alarm on the screen and print the record. At the same time, the monitoring center can send control instructions to the field controller, and the monitor controls the fans, pumps and other equipment to cool and dehumidify according to the instructions, so as to ensure the growing environment of crops in the greenhouse. The monitoring center can also start the acousto-optic alarm device on the field monitor through the alarm instruction, and notify the greenhouse manager to take corresponding measures to ensure the normal environment in the greenhouse.

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