In China, pests and diseases are an important factor affecting the high yield of crops. It is inseparable from the use of pesticides to prevent pests and diseases. However, due to the massive, large-scale, irregular use and long-term abuse of pesticides, it has caused serious pollution to the global environment, resulting in a great increase in harmful substances in the environment, which endanger the ecology and human beings.
According to modern research, ozone gas can replace pesticides, prevent pests and diseases, and sterilize without residue. As we all know, ozone is an allotrope of oxygen, a special gas with a special odor, colorless and unstable. With strong oxidizing and bactericidal properties, it is one of the strongest oxidants in nature and can quickly kill a variety of pathogenic microorganisms. Because of this, ozone has a large-scale application in many fields and is called “green disinfectant”.
In greenhouse cultivation, ozone air can not only effectively control the disease hazards caused by bacteria and fungi, but also replace high-pollution and high-residue pesticides, and also has obvious effect of increasing production. The mechanism of increasing production is that ozone can be quickly decomposed into oxygen for crop roots to absorb, reducing anaerobic respiration pathogenic microorganisms in the soil, and promoting the transfer of plant photosynthesis products and the absorption and utilization of water and fertilizer by roots.
Although ozone gas can play a role in preventing and controlling crop diseases and insect pests, different crops have different tolerance to ozone. Therefore, when using ozone gas to sterilize and kill insects, we must first find out what the ozone concentration range of the crop is. If the ozone concentration is too high, it will easily burn the leaves of crops, and in severe cases, it may lead to crop production reduction and death; if the ozone concentration is too low, it will not have a good control effect on insects.
In order to better monitor the concentration of ozone gas in it, SenTec has introduced an ozone sensor. The sensor uses electrochemical technology to measure the O3 concentration. By measuring the size of the current generated when the target gas enters the sensor and a chemical reaction occurs at the sensing electrode, the purpose of detecting its concentration is achieved. The reaction is fast and sensitive, and the ozone concentration can be reliably detected. The equipment adopts high-sensitivity gas detection probe imported from the United States, and uses high-performance signal acquisition circuit, which can measure ppm-level ozone concentration, with stable signal and high accuracy. The equipment adopts 485 communication, standard ModBus-RTU communication protocol, communication address and baud rate can be set, and the longest communication distance is 2000 meters. The equipment is powered by 10-30V wide voltage, and the shell adopts a wall-mounted high-density waterproof shell, which is easy to install and has a high degree of protection.
In order to facilitate real-time viewing of ozone concentration, users can choose an ozone sensor with an OLED display, and the monitored value will be displayed on the display, which is bright and clear, and is clear at night.
In the process of using ozone to sterilize crops in the greenhouse, the ozone sensor can monitor the concentration of ozone gas in the greenhouse and the residual ozone concentration after disinfection, to prevent excessive ozone concentration from damaging the human body, and also help managers to adjust the ozone in time. gas, implement green and healthy agriculture, and reduce land environmental pollution.
The ozone sensor can be connected to the environmental monitoring cloud platform for free, and the ozone sensor installed in the greenhouse can be remotely monitored and operated through the network manager. The ozone sensor uploads the collected data to the environmental monitoring cloud platform by connecting to the environmental monitoring host.
The environmental monitoring cloud platform can receive real-time ozone concentration data, support functions such as analyzing, viewing and exporting historical data, and remotely setting ozone concentration data parameters. The manager can set different limits on the ozone sensor according to the actual situation. Once the ozone exceeds the limit, the platform will send alert information such as SMS, phone, and email to the manager in time to avoid damage to crops due to excessive ozone concentration. .
