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Time:2022-09-13 21:42:52 Popularity:752
Advantages of ultrasonic wind speed and direction sensor
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The outer surface of the earth is surrounded by a layer of air. Due to the action of the earth's gravity, the air close to the ground has a high density and high pressure, while the air farther from the ground has a small density and low pressure. The sun heats the ground to reduce the density of the air on the ground, and due to the different absorption and reflection of the sun on the surface of the earth, the temperature of the earth at different latitudes causes the air density to vary from place to place, and the rotation of the earth causes the ground temperature to alternate day and night. At the same time, the rotation of the earth also causes the flow of air, which is the reason for the formation of wind. The energy of moving air is wind energy.
The wind force has not only size but also direction, which can be measured by instruments. According to the measurement principle, there are the following categories: mechanical type, ultrasonic type, acoustic oscillation, pressure type and hot wire type, etc. In general, mechanical type and ultrasonic type are used more.
Compared with traditional mechanical wind sensors, ultrasonic wind sensors have obvious advantages:
1. There are no rotating parts, and there will be no wear and aging problems caused by rotation;
2. High sensitivity;
3. The starting wind speed is zero, the measurement speed is fast, etc.
Unlike mechanical wind sensors that require calibration and maintenance for 12 months or less, ultrasonic wind sensors can withstand longer working periods, are less susceptible to rain, fog, sandstorms and other environmental hazards, and have lower maintenance costs.
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