LoRa technology based intelligent ventilation system of greenhouse

Abstract

The invention provides a LoRa technology based intelligent ventilation system of a greenhouse. The greenhouse is provided with shutters; the ventilation system comprises an environment monitoring module, a microprocessor module, a power device and a LoRa wireless module; the environment monitoring module comprises a carbon dioxide sensor, a temperature and humidity sensor and an inclination anglesensor; the microprocessor module controls the power device to open the shutters when the carbon dioxide concentration in the greenhouse is higher than a preset carbon dioxide concentration and the temperature and humidity therein are greater than preset temperature and humidity, and controls the power device to close the shutters when the carbon dioxide concentration in the greenhouse is lower than the preset carbon dioxide concentration and the temperature and humidity therein are lower than the preset temperature and humidity; and the LoRa wireless module transmits the carbon dioxide concentration and the temperature and humidity in the greenhouse as well as an opening angle of the shutters to a monitoring terminal. Thus, the environment in the greenhouse is monitored to open or close the shutter intelligently, and ventilation and air exchange are carried out to adapt to crop growth.

Description

technical field [0001] The invention relates to a ventilation system in smart agriculture, in particular to an intelligent ventilation system for greenhouses based on LoRa technology. Background technique [0002] Greenhouses need to be ventilated frequently during the planting process to ensure that the temperature inside is suitable for crop growth and to discharge excess carbon dioxide. Nowadays, many greenhouses still use manual closing of windows, and in order to prevent sudden rain, snow or strong winds, people often need to Nursing is a waste of a lot of manpower. Although some greenhouses have adopted windows that can be opened and closed automatically, they also need human control, which is not smart enough to automatically adjust the opening range of the windows according to the amount of rain and snow or the magnitude of the wind. In addition, for environmental monitoring in greenhouses, due to the remote location of many greenhouses, full coverage of cellular ba...

AI Technical Summary

Problems solved by technology

[0002] Greenhouses need to be ventilated frequently during the planting process to ensure that the temperature inside is suitable for crop growth and to discharge excess carbon dioxide. Nowadays, many greenhouses still use manual closing of windows, and in order to prevent sudden rain, snow or strong winds, people often need to Nursing, a lot of manpower wasted

Although some greenhouses have adopted windows that can be opened and closed automatically, they also need human control, which is not smart enough to automatically adjust the opening range of the windows according to the amount of rain and snow or the size of the wind.

In addition, for environmental monitoring in greenhouses, due to the remote location of many greenhouses, full coverage of cellular base stations has not been achieved, and the wireless technology adopted has a short and unstable transmission distance, so it is difficult to realize wireless communication between greenhouses and remote monitoring terminals , or communication is prone to failure, and communication energy consumption and network laying costs are relatively high

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