High-accuracy anti-interference ultrasonic wind speed and wind direction measuring method
A technology of wind speed, wind direction and measurement method, which is applied in the direction of speed/acceleration/shock measurement, fluid speed measurement, measuring device, etc. It can solve the problems of no three-dimensional wind speed and direction measurement, improve the anti-interference ability and ensure the effect of measurement accuracy
Inactive Publication Date: 2012-12-19
SOUTHWEST JIAOTONG UNIV +1
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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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[0019] The implementation of the present invention will be further described below in conjunction with the accompanying drawings. However, it should be emphasized that the following embodiments are only exemplary and not intended to limit the scope and application of the present invention.
[0020] figure 1 It is a principle block diagram of the hardware composition of the method for measuring wind speed and direction by the novel high-precision ultrasonic wave with air pressure correction provided by the present invention. figure 1 Four low-frequency ultrasonic probes form a measurement unit, which uses low-frequency ultrasonic waves to measure wind speed and direction; four high-frequency ultrasonic probes form another measurement unit, which uses high-frequency ultrasonic waves to measure wind speed and direction; ultrasonic driving and receiving signal processing circuits are responsible for driving eight The eight ultrasonic probes are used to amplify and filter the we...
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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 relates to the field of wind speed and direction measurement, in particular to a three-dimensional ultrasonic anemometer and an ultrasonic three-dimensional wind measurement method. Background technique [0002] At present, the existing anemometers mainly include mechanical anemometers, thermal anemometers and ultrasonic anemometers. Among them, the mechanical anemometer has moving mechanical parts and has relatively high requirements for the measurement environment. It cannot work normally in dusty or low-temperature freezing environments, and its service life is short due to the wear and tear of moving parts. In addition, limited by the mechanical structure and measurement principle, the measurement accuracy of the mechanical anemometer is low. [0003] The basic principle of the thermal anemometer is to heat the object placed in the airflow to a certain temperature, and calculate the wind speed by calculating the heat loss of the obje...
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IPC IPC(8): G01P5/24G01P13/02
Inventor 闫连山曾德兵吴宗玲陈娟子周国华潘炜张宇行苗强
Owner SOUTHWEST JIAOTONG UNIV