Sensors are all on the battlefield in the smart greenhouse to solve "meal by the sky"

[ Focus on Chemical Machinery and Equipment Network ] In the past, people's farming and farming were basically dependent on the sky for food, and the planting conditions were uncontrollable
.
With the development of technology, the emergence of smart greenhouses has just solved this problem
.

 Chemical machinery and equipment network hotspots pay attention to chemical machinery and equipment
Intelligent greenhouse, usually referred to as multi-span greenhouse or modern greenhouse, is an advanced type in facility agriculture.
It has a comprehensive environmental control system that can directly adjust indoor temperature, light, water, fertilizer, gas and many other factors.
High-yield, steadily fine vegetables and flowers throughout the year, with good economic benefits
.
In recent years, with the rapid development of vegetable greenhouse construction, smart greenhouses have brought impetus to agricultural development
.
The control of the intelligent greenhouse generally consists of three parts: a signal acquisition system, a central computer, and a control system
.


　　Smart greenhouses include three types: full PO film, full solar panels, and solar panels with a hollow glass roof around them
.

 
　　The greenhouse automation control system is based on the information collected by the temperature and humidity, soil moisture, soil temperature and other sensors in the greenhouse , and uses the RS485 bus to send the sensor information to the 485 to 232 converter, which is connected to the host computer for display and alarm , Query
.
The monitoring center displays and stores the received sampling data in tabular form, and then compares it with the set alarm value.
If the measured value exceeds the set range, an alarm or voice alarm will be displayed on the screen and the record will be printed
.

 Sensor converter
　　The temperature and humidity sensor is a sensor device equipped with humidity and heat-sensitive elements that can be used to measure temperature and humidity, some with on-site display, and some without on-site display
.
Temperature and humidity sensors are widely used in various fields of production and life due to their small size and stable performance
.

 
　　The soil temperature sensor is a soil temperature sensor that can monitor the temperature of the soil, the atmosphere and the water, and is used in experiments and scientific research
.
Soil temperature is abbreviated as ground temperature, which is the general term for ground temperature and ground temperature
.
The soil temperature is closely related to the growth and development of crops, the decomposition of fertilizers and the accumulation of organic matter.
It is an important environmental factor in agricultural production
.
Soil temperature is also an extremely important factor in the formation of microclimate, so the measurement and research of soil temperature is an important part of microclimate observation and agrometeorological observation
.
The rise and fall of soil temperature is mainly determined by the size and direction of soil heat flux, but it is also related to soil thermal properties such as soil volume heat capacity, thermal conductivity, density, specific heat and porosity, and soil moisture content
.
For non-horizontal surfaces, it is also related to the position and size of the slope
.

 
　　At the same time, the monitoring center can issue control instructions to the on-site controller, and the monitor controls the fans, pumps and other equipment to perform operations such as cooling and dehumidification according to the instructions to ensure the growth environment of the crops in the greenhouse
.
The monitoring center can also activate the sound and light alarm device on the field monitor through the alarm command, and notify the greenhouse management personnel to take corresponding measures to ensure the normal environment in the greenhouse
.

 
　　Source: Tuliu.
com
 
　　Original title: Sensors are all on the battlefield in the smart greenhouse to solve "meal by the sky"