For large-scale greenhouse cultivation, manual management alone requires a large amount of manpower, time-consuming and labor-intensive errors. Through the IoT system, a large part of the manager's time and energy can be released first to improve efficiency. The same manpower can increase the number of greenhouses managed. Precision management can provide crop quality and increase returns.

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LoRa Wireless Technology for Smart Agricultural Internet of Application
Written By Calio Huang
For large-scale greenhouse cultivation, manual management alone requires a large amount of
manpower, time-consuming and labor-intensive errors. Through the IoT system, a large part of
the manager's time and energy can be released first to improve efficiency. The same manpower
can increase the number of greenhouses managed. Precision management can provide crop
quality and increase returns.
The system collects real-time environmental data such as air temperature and humidity, soil
moisture, soil temperature, carbon dioxide and light intensity in the greenhouse, and transmits
the data to the control center. The central monitoring system compares the latest monitoring
data with pre-set environmental parameters suitable for crop growth If the sensor detects the
deviation of the measured data from the preset value, the computer will automatically issue a
command to intelligently start the ventilator, sunshade, humidification, watering and other
equipment connected to the system until the environmental data in the greenhouse reaches the
pre-system Set the data within the scope of the relevant equipment will stop working.
Through intelligent control system in accordance with the crop needs precise water and fertilizer
supply, effectively saving the use of water and fertilizer, saving resources to avoid waste and
excessive use of the land damage. At the same time, it helps to save energy, reduce fertilizer
pollution, improve the quality of agricultural products, contribute to agricultural energy
conservation, environmental protection and the development of low-carbon economy. The social
benefits are considerable.
Second, wireless communication technology LoRa technical characteristics:
As a long-range communication technology of Low Power Wide Area Network (LPWAN), LoRa has
received more and more attention in recent years. Cisco, IBM, Semtech, Microchip and others are

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 Jasmine Lu (86)17322110281
actively promoting LoRa technology.
The strength of LoRa lies in its technical long-range capabilities. The outstanding features of LoRa
technology in high performance, long distance, low power consumption, large-scale networking,
ranging and location support make this solution (terminal + gateway) ideal for large-scale
promotion and application of IoT Technical choice.
Features advantages
Sensitivity -148dBm
Communication distance> 15 km away
Minimal infrastructure costs
Expanding system capacity with gateways / concentrators Easy to build and deploy
Battery life> 5 years
Receive current 10 mA, sleep current <200 nA to extend battery life
Free license band
Node / terminal cost low cost
Third, climate and environmental parameters collected
Through the Internet of Things system can be connected to the sensor acquisition environment
temperature and humidity, light intensity, wind speed, carbon dioxide concentration.
Fourth, soil environmental parameters collection
Through the Internet of things, the system can be connected to the sensor to collect soil
temperature, soil moisture, soil salinity, PH value.
Fifth, intelligent control system applications
Through the Internet of things system, you can set the greenhouse operating conditions of
various equipment, when the environmental information does not meet the pre-set conditions,
automatically start the greenhouse related equipment. At present, it covers the intelligent control
system of water valve, intelligent control system of precise blower, high-precision intelligent
shutter control system, intelligent fill light control system, intelligent ventilation control system,
intelligent shade control system, intelligent high power control system, intelligent integration
system Wait.
Sixth, agricultural monitoring system
Monitoring system With the help of personal computers and smartphones, real-time monitoring
of the weather, soil and water environment of agricultural production sites can be realized and
the remote automatic control of agricultural facilities such as irrigation, ventilation, cooling and
warming of greenhouses greenhouse can be realized. Combined with live video, intelligent early
warning and other powerful features. The system can help the majority of agricultural workers at
any time grasp the status of crop growth and environmental trends, to provide users with a set of
efficient and convenient and powerful agricultural monitoring solutions.