I. Wind Direction Sensor
It effectively obtains wind speed information. The casing is made of high-quality aluminum alloy or polycarbonate composite material, making it rainproof, corrosion-resistant, and anti-aging. It is a user-friendly, safe, and reliable intelligent instrument. It is mainly used in meteorology, agriculture, and shipbuilding, and can be used outdoors for extended periods.
Wind direction sensors typically use a mechanical structure similar to a wind vane. When wind blows towards the tail fin of the wind vane, the arrow on the vane will point in the direction the wind is blowing. To maintain directional sensitivity, different internal mechanisms are used to help the wind direction sensor determine direction. These generally fall into three categories:
1. Electromagnetic wind direction sensor: Designed based on electromagnetic principles. Due to the variety of principles, the structure varies. Currently, some of these sensors have begun to use gyroscope chips or electronic compasses as basic components, which has further improved their measurement accuracy.
2. Photoelectric wind direction sensor: This type of wind direction sensor uses an absolute Gray code disk as its basic component and employs a specially customized encoding method. Based on the principle of photoelectric signal conversion, it can accurately output the corresponding wind direction information.
3. Resistive wind direction sensor: This type of wind direction sensor adopts a structure similar to a sliding rheostat, marking the maximum and minimum resistance values as 360° and 0° respectively. When the wind vane rotates, the slider of the sliding rheostat will rotate with the wind vane at the top, and the different voltage changes can be used to calculate the angle or direction of the wind.
II. Applications and Functions of Wind Speed Sensors
1. Agriculture
In agriculture, wind direction and speed play a crucial role, acting as key factors from plant growth and development to pollination. The spread of pests and diseases in farmland is also inextricably linked to wind speed and direction. Excessive wind speed can cause physical damage to agricultural products, such as crop collapse, tree tilting, and fruit drop, all of which affect the final yield. Monitoring wind direction and speed in agriculture can prevent sand dune movement from damaging farmland and prevent significant losses to crops caused by excessive wind speeds.
2. Meteorological monitoring
Ground wind direction monitoring: In some special areas, such as deserts and plateaus, people pay close attention to changes in wind speed and direction to predict the upcoming weather in order to formulate corresponding plans. At this time, wind speed sensors come in handy. An important component of weather stations is an instrument equipped with wind speed and direction sensors.
3. Marine Meteorology
The weather at sea is complex and changeable. Experienced personnel judge the weather by observing changes in cloud cover and seawater fluctuations. Now, with wind speed sensors, more accurate data can be detected. In the field of marine meteorology, wind speed and wind direction sensors are generally not used alone. Weather judgment requires comprehensive indicators, so they are combined with a series of monitoring devices such as temperature sensors, relative humidity sensors, and barometric pressure sensors to comprehensively predict weather conditions.
4. Aviation field
The pitot tube, a type of pitot-tube anemometer, is a very important monitoring tool on an aircraft. The anemometer is located on the outside of the fuselage in a position less affected by airflow. When the aircraft is in flight, airflow enters the pitot tube, and the anemometer starts to work. The force of the airflow impact on the anemometer at this time is called dynamic pressure. The faster the aircraft is, the stronger the dynamic pressure. Managers can judge the speed by observing the data.
5. Coal mine operations
Ventilation is crucial in coal mining operations. Wind speed and volume determine the sufficiency of oxygen during mining operations and also affect the concentration of harmful gases such as methane and carbon monoxide. Installing wind speed sensors in underground mine ventilation systems allows personnel to monitor wind speed changes in the mine at any time, enabling them to take appropriate countermeasures as needed.
6. Applications in smart agriculture
As a fundamental piece of equipment in the meteorological and environmental monitoring system, it utilizes 4G, NB, and LoRa wireless communication methods to remotely collect meteorological monitoring data such as air temperature and humidity, illuminance, CO2 concentration, air quality (PM2.5, PM10), wind speed, wind direction, air pressure, and rainfall. The data is transmitted to the Juying Cloud server. The accompanying Juying Cloud app, web platform, and PC software refresh the monitoring data every 3 seconds, and the data is stored for one year by default. Monitoring data can be exported at any time for easy meteorological data analysis. The platform software also supports base station positioning management, centralized monitoring management, and video surveillance functions. When an alarm is triggered, it proactively notifies management personnel.
