Let’s talk about common sensors in greenhouses

In agricultural production, greenhouses have played a huge role in promoting the development of agriculture. In the fields of high-value, off-season vegetables, high-value fruits, etc., greenhouses are increasingly indispensable.
It has many benefits. For example, the greenhouse can be regarded as an independent ecosystem to a certain extent, which can isolate pests and diseases to the greatest extent and reduce the impact of external dust and exhaust gas on the plants in the greenhouse. At the same time, the greenhouse can withstand natural disasters, reduce crop losses, and produce high-quality vegetables or off-season fruits.
There are many advantages, but in actual production management, various problems will also be encountered. How to control the ecological balance in the greenhouse is crucial. It is difficult to accurately judge and deal with it in time relying solely on the experience of farmers themselves or managers. In addition, a large number of frequent maintenance is time-consuming and labor-intensive, and it is urgent to reduce labor costs through scientific and technological means!
So in the daily management of greenhouses, can we use sensor IoT technology to free up workers’ time and manage greenhouses more easily and conveniently? Let’s talk about the common sensors in greenhouses!
The remote node collects soil EC, i.e. electrical conductivity, through the soil EC sensor. It uses a high-precision sensing core, which is calibrated by comparing with the original high-precision sensor and the actual soil drying weighing method, and has the characteristics of high accuracy and stable output. It is less affected by the salt content of the soil and is suitable for various soil types. When in use, it needs to be used in conjunction with the LORAWAN gateway . It is widely used in scientific experiments, water-saving irrigation, greenhouses, orchards, grain storage, etc. to measure the electrical conductivity of various particles.
Product features
LoRawan protocol, simple, safe and reliable; working parameters and alarm parameters
can be configured through the gateway configuration software
; intelligent sending mechanism, after configuration with the host, adjust the next transmission time according to its own device number;
has a unique device physical address, which is convenient for distinguishing other nodes;
can automatically reconnect to the host when offline to prevent accidental disconnection between the host and the node;
the sensor is suitable for various soil types, can be buried in the soil for a long time, is resistant to long-term electrolysis, corrosion-resistant, vacuum- sealed , and completely waterproof.
lorawan Soil conductivity and salinity are indicators for determining soil water-soluble salts, and soil water-soluble salts are an important attribute of soil and a factor in determining whether salt ions in the soil limit crop growth. The analysis of water-soluble salts in the upper soil is of great significance for understanding the dynamics of salt content, the impact on crop growth, and formulating improvement measures. The analysis of water-soluble salts in soil generally includes the determination of total salt content, anions (Cl-, SO32-, CO32-, HCO3-, NO3-) and cations (Na+, K+, Ca2+, Mg2+), and the ion composition is often used as the basis for the classification and utilization improvement of saline-alkali soil. There are many factors that affect the light in the greenhouse, such as the light transmittance of the greenhouse film, temperature , humidity, insufficient light time in winter, etc. Managers need to analyze specific problems, so it is necessary to use light sensors to monitor the light intensity of the greenhouse, understand the daily light pattern, and other factors that affect the light. For example, in winter, supplementary lights can be added to the greenhouse to ensure the light needs of plants or vegetables. Adequate light can increase the yield of plants or vegetables.
What is soil electrical conductivity (EC)?
As the total salt content of the soil increases year by year, soil acidification and secondary salinization occur. This is mainly due to the fact that, on the one hand, the perennial or seasonal covering of the soil changes the water and heat balance in the natural state (high temperature, lack of rainwater leaching, strong evaporation), and the soil cannot be fully leached by rainwater, causing salt to accumulate on the soil surface; on the other hand, it is also caused by unreasonable fertilization. Therefore, it is very necessary to monitor the electrical conductivity in the soil to understand its soil fertility status.
Greenhouse managers should regularly monitor changes in soil EC values ​​and control EC values ​​within a reasonable range to ensure that soil fertility does not fluctuate too high or too low, affecting the growth of plants or vegetables.