A high-precision anti-interference ultrasonic wind speed and direction measurement method

Abstract

The invention discloses a high-accuracy anti-interference ultrasonic wind speed and wind direction measuring method. The method comprises the following steps of: adopting eight ultrasonic probes with an ultrasonic receiving and transmitting function including four high-frequency ultrasonic probes and four low-frequency ultrasonic probes, which are arranged oppositely in pairs to form two sets of low-frequency ultrasonic probe pairs TD12 and TD34 and two sets of high-frequency ultrasonic probes TD56 and TD78; respectively acquiring the propagation time of ultrasonic waves which are transmittedfrom opposite sides and received by the two probes in each probe pair; and according to the measured propagation time and the distance between the two face-to-face probes in each ultrasonic probe pair, acquiring the three-dimensional wind speed and wind direction of natural wind. By using the method, the measured three-dimensional wind speed and wind direction can be accurately calculated, ultrasonic waves with two frequencies can be selected to measure the wind speed and wind direction, and the anti-interference capacity of a wind measuring device is improved, so the method is applicable to all-weather wind speed and wind direction measurement under severe environment conditions.

Description

Technical field [0001] The invention involves the field of wind speed and wind direction measurement, which specifically involves a three -dimensional ultrasonic wind speed direction and ultrasonic three -dimensional wind test. Background technique [0002] At present, the existing wind speed direction instrument mainly includes mechanical wind speed wind velocity meters, thermistor wind speed wind direction instruments, and ultrasonic wind speed wind direction instruments.Among them, the mechanical parts of the mechanical wind speed direction instrument have high requirements for the measurement environment. They cannot work properly in sand or low -temperature freezing environment, and have a short service life due to the wear of activity components.In addition, the measurement accuracy of the mechanical wind speed wind direction is low due to the limitation of the mechanical structure and measurement principle. [0003] The basic principle of thermistor wind speed wind directi...

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Problems solved by technology

However, most of the existing ultrasonic wind measurement equipment is only aimed at the measurement of the two-dimensional wind speed and direction of the plane, and does not measure the three-dimensional wind speed and wind direction.

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