What is the application significance of soil moisture detector?

Welcome to inquire: 18650152006 Haichuan Runze Tubular Soil Moisture Monitor (Model: HC-PSX01) 1, Equipment Introduction Soil moisture monitor is a sensor based on the principle of dielectric constant.

This detector can detect the temperature and humidity of soil at least 3 layers and 5 layers of soil temperature and humidity at the highest, which can quickly and comprehensively understand and collect soil moisture information, scientifically formulate drought control scheduling plans, provide decision support for the correct command of drought relief and minimize disaster losses. The product adopts standard MODBUS-RTU485 communication, which can communicate up to 2000 meters and supports secondary development. The shell of the product is made of PVC plastic pipe, which can well penetrate the high-frequency detection wave of nearly 1g hertz, and will not be affected by salt ions in the soil....

The commonly used soil detector on the market can monitor temperature and humidity, conductivity, and soil pH at the same time, which can make it more convenient to understand soil information comprehensively.

Soil moisture is a very important reference for hydrological forecasting, drought prevention and control, and agricultural production.

Through the real-time monitoring and research of soil moisture data change, the production benefits and development prospects of different technical models can be evaluated, so as to improve the efficiency of water resource utilization, improve the soil more effectively and reasonably, and promote the sustainable development of agriculture.

With the development of modern agricultural technology, precision agriculture has received more and more attention from society. The core of precision agriculture is to accurately obtain the actual difference information of the environmental factors affecting crop growth in the farmland community, and analyze it in a targeted manner and regulate it accurately.

Moisture refers to the humidity of the soil suitable for plant growth and development. Moisture refers to the condition of soil moisture.

Soil moisture is the degree of dryness and wetness of the soil, that is, the actual water content of the soil, which can be expressed as a percentage of the soil moisture content in the weight of the dried soil: soil moisture content = water weight 100% of the weight of the dried soil. It can also be expressed as a percentage of soil water content equivalent to the water holding capacity of the field, or as a percentage of water relative to saturated water.

Presence form: Soil water is the main water absorption of plants (except hydroponic plants), and plants can also directly absorb a small amount of water that falls on the leaves. Soil water is mainly precipitation and irrigation water, which participates in the lithosphere-biosphere-atmosphere-hydrosphere water cycle.

Soil water is present in soil pores, especially in small and medium-sized pores, which are often occupied by air. Plant roots interspersed with soil pores absorb water from water-bearing soil pores for transpiration. There is a humidity gradient at the water-vapor interface in the soil, and as the temperature increases, the gradient increases, so the water evaporates as water vapor escapes the surface.

Transpiration and evaporation of water together are called evapotranspiration and are the two ways through which soil water enters the atmosphere.

The surface soil water will seep downward due to gravity, and if there is enough water on the surface to replenish it, the soil water can seep all the way to the groundwater table, and then may enter the surface water of rivers, rivers, lakes, seas and other places.

There are two ways to express the amount of water in the soil: one is expressed by soil water content, and the water content by weight and volume, and the relationship between the two is converted by soil bulk density. The other is expressed in terms of soil water potential, and the negative value of soil water potential is soil water suction.

FDR (FrequencyDomain Reflectometry) is to measure the apparent permittivity of soil ( ) according to the propagation frequency of electromagnetic waves in the medium by using the principle of electromagnetic pulse to obtain the soil volume water content (V). The measurement principle, system installation, measurement method and application of FDR system in continuous dynamic monitoring of soil moisture are introduced, and the actual measurement results are corrected, which can be used as a reference for FDR correction. The application practice in the Huangfuchuan River Basin in the semi-arid area shows that FDR has the advantages of simplicity, safety, fast and accurate, fixed-point continuous, automation, wide range and less calibration, and is a recommended soil moisture measurement instrument.

TDR (TimeDomain Reflector) is a common principle for rapid detection of soil moisture, which is based on the principle that the waveform is reflected on a mismatched transmission line. The waveform at any point on the transmission line is a superposition of the original waveform and the reflected waveform. The TDR principle has a response time of about 10-20 seconds, making it suitable for mobile measurement and fixed-point monitoring.

The measurement results are not affected by salinity, and the disadvantage of TDR is that the circuit is more complex and the equipment is more expensive. FDR has almost all the advantages of TDR compared to TDR testing principle, and the probe shape is very flexible. The more exaggerated ones can even be measured in the movement of a tractor made into a plough shape.

FDR requires less correction work than TDR. For many years, it has been difficult to break through the accuracy of the FDR principle of soil moisture meter, which has become a stagnation in the development of FDR soil moisture meter. After years of research, this difficulty has finally been broken.

A soil moisture meter based on FDR principle was developed, with an accuracy of 3%.

Highlight 1: Realize the supervision of provincial soil moisture monitoring data.

TOP soil moisture monitoring and early warning information platform connects the relatively isolated moisture information to achieve the upload and distribution of information. The platform serves the high-speed transmission, mass storage and supercomputing of a large amount of soil moisture data. The wireless moisture monitoring system uploads county-level moisture data to the provincial platform through GPRS transmission, so as to achieve unified supervision on one platform, and can also be directly uploaded to the national soil moisture monitoring system.

Highlight 2: Establish and improve information release.

1. Industry information release: agriculture-related industry information, national policies, laws and regulations, as well as provincial, municipal, and county-related news and information, to form a database of soil moisture, so as to provide relevant basis for provinces, cities, and counties, and establish an information exchange platform.

2. Supply and demand information release: establish a platform for information interaction with growers and farmers. It can provide an information channel for the release of supply and demand for crops, and carry out information sharing and promotion.

Feature Highlight 3: Build timely drought early warning and SMS notification.

Regularly collect and summarize soil moisture information, analyze the drought time and climatic factors in each region, and combine the weather forecast of the meteorological department and the professional assessment and review of experts to produce perfect drought early warning information.

The soil moisture monitoring and early warning information platform provides early warning information release and SMS notification, and cities, counties, and regions can send drought early warning information to designated regional regulatory departments through text messages, and can also send early warning information to their subordinate departments and subordinate departments or designated farmers. The early warning information includes the name of the disaster, the area affected, the extent of the disaster and the countermeasures.

Feature Highlight 4: Graphical early warning and disaster rendering.

The provinces contain many cities and county-level townships and towns, and with such a huge planting area, it is difficult to show the image of the disaster situation in the province with reports. The graphics early warning and disaster rendering module is set up to solve this problem.

The platform divides the disaster situation into different colors according to the severity, and represents it in the form of dots in the provincial administrative map, as long as you open the administrative area map of the platform, you can visually show how the disaster situation in each region of the province is affected.

The provinces contain many cities and county-level townships and towns, and with such a huge planting area, it is difficult to show the image of the disaster situation in the province with reports. The graphics early warning and disaster rendering module is set up to solve this problem.

The platform divides the disaster situation into different colors according to the severity, and represents it in the form of dots in the provincial administrative map, as long as you open the administrative area map of the platform, you can visually show how the disaster situation in each region of the province is affected.

Including monitoring and early warning system, wireless transmission system, intelligent control system and soil moisture monitoring and early warning information platform.

This is the traceability of agricultural products (Henan Chengcheng Internet of Things network technology).

It is necessary to use a portable soil moisture tester to monitor soil moisture quickly and accurately. During the critical period of monitoring by the portable soil moisture tester, it is necessary to pay attention to timely replenishment of moisture according to the changes in soil moisture. The temperature is higher during this period, the evaporation of the water surface is the highest value of the year, although the precipitation has also increased, but the actual results from the monitoring of the portable soil moisture tester show that the water consumption is greater than the precipitation, so the portable soil moisture tester should be used to strengthen the monitoring of soil moisture, timely replenish the evaporated soil moisture, and ensure the water demand of crops.

Portable soil moisture testers to carry out soil moisture monitoring are essential for the development of modern agriculture.