Capacitive wind direction measuring device

Abstract

The invention discloses a capacitive wind direction measurement device. The capacitive wind direction measurement device comprises a box body, a wind direction detection unit, a cylindrical capacitor and a capacitance measurement module, the cylindrical capacitor and the capacitance measurement module are arranged in the box body; the wind direction detection unit is arranged at the top end of the cylindrical capacitor; the wind direction detection unit is used for driving the rotating cylindrical electrode plate in the cylindrical capacitor to rotate so as to adjust the relative area between the rotating cylindrical electrode plate and the fixed cylindrical electrode plate; the cylindrical capacitor is used for outputting a capacitance signal according to the relative area; the cylindrical capacitor is electrically connected with the capacitance measurement module; the capacitance measurement module is used for detecting the cylindrical capacitor to obtain a capacitance signal, and the wind direction deflection angle is obtained after calculation. According to the invention, the problems of great environmental influence and inaccurate positioning during wind direction detection are solved.

Description

technical field [0001] The invention relates to the field of wind direction measurement, in particular to a capacitive wind direction measurement device. Background technique [0002] As a natural phenomenon, wind has many influences on human daily activities. Wind direction is an important parameter of wind, and it is necessary to measure it in real time. According to the working principle, the wind direction sensor can be divided into photoelectric type and compass type, etc.; the core of the photoelectric wind direction sensor adopts Gramma disc code, and uses the principle of photoelectric signal conversion to accurately output the corresponding wind direction information, but the disadvantage lies in the requirements for the environment If it is too high, changes in temperature and humidity will have a great impact on the measured data, and it is not suitable for field operations; the core of the electronic compass wind direction sensor uses an electronic compass to lo...

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Problems solved by technology

According to the working principle, the wind direction sensor can be divided into photoelectric type and compass type, etc.; the core of the photoelectric wind direction sensor adopts Gramma disc code, and uses the principle of photoelectric signal conversion to accurately output the corresponding wind direction information, but the disadvantage lies in the requirements for the environment If it is too high, changes in temperature and humidity will have a great impact on the measured data, and it is not suitable for field operations; the core of the electronic compass wind direction sensor uses an electronic compass to locate the absolute direction. The disadvantage is that if the magnetic field outside the earth cannot be shielded, the electronic compass will cause positioning fail

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