RW-64型熱膜式無線風(fēng)速廓線儀的研制與試驗(yàn).pdf

1、 分類號 S2;X859 學(xué)校代碼 10129 U D C 502/504 學(xué) 號 072050024 RW-64 型熱膜式無線風(fēng)速廓線儀的研制與試驗(yàn) Development and Test of RW-64 Wireless Hot-film Wind Speed Profiler 申 請

2、 人：郭 旺 學(xué)科門類：工 學(xué) 學(xué)科專業(yè)：農(nóng)業(yè)生物環(huán)境與能源工程 研究方向：環(huán)境控制工程與技術(shù)裝備 指導(dǎo)教師：陳 智 教授 論文提交日期：二〇一二年五月Development and Test of RW-64 Wireless Hot-film Wind Speed Profiler Abstract The wind speed profiler is an important measurement equipment

3、of wind erosion. Because the problems of the common used differential pressure wind speed profilers are large error range, wired connection, complicated to application and inconvenient to move, the RW-64 hot-film wireles

4、s wind profile is designed and a testing software is programmed by the Visual C++ on the PC to realize the data acquisition and processing. The device can meet multi-channel, synchronous and wireless data acquisition, an

5、d the testing software can display and process the data. At the same time, the wind profile is given and the function of playback and analysis the historical data is also contained in the software. The system meet the re

6、quirements of portable, anti-pollution and a wide measurement range during the field work. The wind profiler is demonstrated in OFDY-1.2 portable wind tunnel of the Inner Mongolia Agricultural University. The wind speed

7、values measured by the Testo-425 hot-wire anemometer produced in Germany are used as the reference wind speed. The least squares method is used to achieve the curve fitting and the medium of the fluid is the pure wind of

8、 the wind tunnel. After calibration, the wind values measured by the profile meet the exponential distribution in the vertical height. The multiple regression coefficients are above 0.967 and the calibration error is les

9、s than 0.985557 m / s. They can accurately reflect the vertical distribution of near-surface wind speed. The RW-64 hot-film wireless wind speed profiler through calibration and the Testo-425 hot-wire anemometer developed

10、 in Germany are accomplish the field test validation in Wuchuan county conservation tillage test area and Damao Showa grassland. The results show that under the different surface and the same wind conditions, the wind sp

11、eed data collected by the two test equipment is very close and the mean square deviation is less than 0.106493, The correlation coefficient are greater than 0.978522. Key words: The wind speed profiler; The hot-film sens

12、or;Wind tunnel;Calibration Directed by: Prof.CHEN Zhi Applicant for Master degree: GUO Wang （Agricultural Biological Environmental and Energy Engineering) (College of Mechanical and Electrical Engineering.Inner Mongolia