CN202075302U - Device used for measuring wind speed and wind direction - Google Patents

Abstract

The utility model discloses a device used for measuring wind speed and wind direction, belonging to the technical field of meteorological detection. The device comprises a Pitot tube, a wind vane and a micro differential pressure sensor. The Pitot tube is used as a wind measuring probe, and the high-precision digital micro differential pressure sensor and the wind vane are used for wind speed measuring. The Pitot tube cooperates with the wind vane, the Pitot tube always directly faces the wind speed by relying on rotation of the wind vane, thereby guaranteeing accurate measuring of the wind speed. The device is good in instantaneity, high in precision, low in cost and good in reliability, and can be hardly influenced by the environment.

Description

A device for measuring wind speed and direction

technical field

The utility model relates to a device for measuring wind speed and wind direction, which belongs to the technical field of meteorological detection.

Background technique

Wind speed is an important part of meteorological observation. People's daily life and industrial and agricultural production are closely related to wind. The measurement of wind speed and wind direction provides data for accurate weather forecast and early warning, and provides services for the general survey and utilization of wind energy.

At present, wind cups and ultrasonic anemometers are commonly used in weather stations for wind speed measurement. The wind vane is used in conjunction with the wind cup. The wind cup anemometer calculates the wind speed by the number of revolutions of the wind cup within a period of time. The start-up wind speed is large and the hysteresis is large, which makes it impossible to measure the instantaneous wind speed. Wear and tear will also affect the measurement accuracy of wind speed, and its service life is short; while the ultrasonic anemometer has defects such as high price and being easily blocked by precipitation and snow, which affects the measurement accuracy.

Contents of the invention

The technical problem to be solved by the utility model is to provide a device for measuring wind speed and wind direction aiming at the defects of the above background technology.

The utility model adopts the following technical solutions for solving the above-mentioned technical problems.

A device for measuring wind speed and wind direction, comprising a Pitot tube, a wind vane, and a pressure sensor, wherein the wind vane is fixedly connected to the Pitot tube and installed on the base through a rotating shaft, and the pressure sensor is installed on the top of the Pitot tube for sensing The pressure difference between the pitot tube full pressure and the static pressure, and output the value measured by the wind speed.

Preferably, in the device for measuring wind speed and wind direction of the present utility model, the pressure sensor adopts a high-precision digital differential pressure sensor.

Preferably, in the device for measuring wind speed and wind direction of the present utility model, the pitot tube is L-shaped, one end of which is an air inlet, and the other end is upwardly connected to a pressure sensor.

Compared with the prior art by adopting the above technical scheme, the utility model has the following technical effects:

The utility model adopts the pitot tube in the wind speed measurement, and realizes the measurement of the wind direction by the wind vane while realizing the high-precision measurement of the wind speed. The utility model uses a high-precision differential pressure sensor to measure wind speed, and has the characteristics of good real-time performance, high precision, good reliability and low cost, and has the advantage of being less affected by weather conditions such as rain, snow and freezing.

Description of drawings

Fig. 1 is a device structure diagram of the present utility model.

Explanation of symbols in the figure: 1-pitot tube, 2-pressure sensor, 3-wind vane, 4-rotation shaft, 5-static pressure, 6-total pressure.

Detailed ways

Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail.

As shown in FIG. 1 , a device for measuring wind speed and wind direction includes a pitot tube 1 , a wind vane 3 , and a pressure sensor 2 . The total pressure 6 and the static pressure 5 output by the pitot tube are connected to the pressure sensor; the pitot tube and the pressure sensor are installed on the wind vane.

Pitot tube: As a wind speed measurement probe, an ordinary gas flow rate pitot tube can be used.

Pressure sensor: High-precision digital differential pressure sensor is installed on the upper part of the pitot tube. The total pressure and static pressure generated by the pitot tube during wind speed measurement are used as the input of the digital differential pressure sensor, and according to the size of the pressure value, through the internal The processing of the circuit and the microprocessor is converted into the wind speed value.

Wind vane: used to detect the wind direction, the wind vane is fixedly installed on a rotating shaft 4 after being combined with the Pitot tube. During measurement, the wind speed measurement device composed of pitot tube and high-precision digital differential pressure sensor will rotate with the wind vane, so that the full pressure port of pitot tube is always facing the direction of wind speed, ensuring the correct measurement of wind speed.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (3)

1. A device for measuring wind speed and wind direction, characterized in that: it comprises a Pitot tube, a wind vane, and a pressure sensor, wherein the wind vane is fixedly connected to the Pitot tube and is installed on the base by a rotating shaft, and the pressure sensor is installed on the Pitot tube The top of the sensor is used to sense the pressure difference between the full pressure of the pitot tube and the static pressure, and output the value measured by the wind speed. 2. The device for measuring wind speed and wind direction according to claim 1, characterized in that: the pressure sensor is a high-precision digital differential pressure sensor. 3. The device for measuring wind speed and wind direction according to claim 1, characterized in that: the pitot tube is L-shaped, one end of which is an air inlet, and the other end is upwardly connected to the pressure sensor.

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