A wind speed and direction measurement system and its measurement method

Abstract

The invention provides a system for measuring wind speed and wind direction. The system comprises a spherical shell which is smooth-faced, wherein 6 pressure measuring holes are formed in the spherical shell uniformly; one pressure sensor is arranged at the inner side of the each pressure measuring hole; and each pressure sensor is in sealed connection with the corresponding pressure measuring hole so as to isolate the pressure measuring hole from an inner chamber of the spherical shell. The system and method for measuring wind speed and wind direction utilize the integrated and spherical surface uniform distribution type sensing system, and can realize accurate determination of wind speed and wind direction by means of the technology that tests pressure intensity distribution of different points on the surface of the sphere in an air flow field.

Description

technical field [0001] The invention relates to an integrated wind speed and wind direction testing method, belonging to the technical field of high-performance components and equipment manufacturing. Background technique [0002] The test or measurement of wind speed and wind direction is a topic closely related to meteorology, transportation, agriculture and other fields. Conventionally, there are many methods of testing wind speed and wind direction currently available on the market, such as the hot wire method, that is, using a heating filament as a sensitive element, and judging the wind speed by sensing the difference in heat dissipation at different wind speeds the size of. Since its heat dissipation is also related to the ambient temperature, it is necessary to consider the correction of the ambient temperature to obtain a more accurate wind speed, but its ability to judge the wind direction is relatively poor; the method of rotating the wind measuring bowl or the w...

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Problems solved by technology

3) Even in the case of strictly parallel air flow, the upper and lower parallel plate structure itself is a kind of wind collecting structure, just like an airplane wing, its existence will change the flow of wind, so it may affect the measurement results. The above Although the three points can be improved by software correction, it is difficult to eliminate the interference caused by the change of wind direction.

[0004] In fact, many test methods currently used are disturbed by wind direction changes. At this time, a single test unit may give completely incorrect data. Even if multiple measurement units are used, it will also be due to the problem of accurate judgment of wind direction But good results cannot be obtained. Especially when the air flow direction is not strictly parallel to the horizontal plane, for example, there is a wind speed component perpendicular to the horizontal plane. Because the wind direction test system commonly used now also defaults to the air flow being parallel to the horizontal plane. .So it actually lacks an accurate reflection of the real wind direction. Therefore, generally speaking, the current wind speed and direction test system lacks systematic and careful consideration of this actual situation, and the results obtained can only reflect part of the actual situation. If To obtain comprehensive and detailed information, a new and different system needs to be constructed

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