【摘要】 超声测风仪因启动风速小、无转动部件、不破坏风场、测量精度高等特点,适用于多种行业的测风需求。超声波测风的相关检定规程当前在国内尚未正式制定。本文借鉴风杯检定规程所选择的风速测试点,在HDF-720低速回路风洞中,对超声测风仪在不同角度下进行了测试数据统计分析。结果表明:超声测风仪可以安装在工作段面较大的风洞中进行测试,由于超声探头存在阴影效应,对于同一风速,不同角度上的测量结果稍有差异,而且不同风速对应的差异也不同。利用超声测风仪进行风速实时测量时,必须结合上述测试分析,按照超声传感器的安装角度,对测量值进行相应修正。更多还原

【Abstract】 Ultrasonic anemometers are suitable to a variety of industries for wind measurement demand because of small start wind speed,no-moving parts,not disturbing the wind field,and high accuracy.However,ultrasound test procedures related to wind measurements have not formalized in China.Selecting the speed test points drawing on the wind cup test procedures,tests are conducted at each point at different angles in the HDF-720low-speed wind tunnel loop.The test results indicate that ultrasonic wind sensors can be installed in a large wind tunnel for testing,at the same wind speed,the measurement results are slightly different at different angles due to the shadow effect of wind instrument sensors.Moreover,for different wind speeds,the differences are different.Combined with the above test analysis,the measurements must be corrected according to the ultrasonic sensor installation angles when using ultrasonic anemometer to measure wind speed in real time.更多还原