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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Jian-xin Wang Mei-li Sui Shi-feng Yang Xian-wei Gao |
| Copyright Year | 2011 |
| Description | Author affiliation: Department of Electronic and Information Engineering, Beijing Electronic Science and Technology Institute, 100070, China (Jian-xin Wang; Xian-wei Gao) || College of Electronic Information and Automation, Tianjin University of Science And Technology, 300222, China (Shi-feng Yang) || Beijing Senior Expert Technology Center Chinese Academy of Sciences, 100046, China (Mei-li Sui) |
| Abstract | Studies have shown that ultrasonic acoustic emission (UAE) is associated with the phenomenon of cavitation diagnosis in plant conduit. The UAE signals can be acquired between 100 KHz and 1 MHz, which is the indicator of xylem cavitation. The UAE diagnosis system is established by PCI-2, PCI-8333 data acquisition card (DAQ), transducers and virtual instrument platform to realize the functions of data acquisition and transmission, data storage and information query, data output and report generation. From the experiment data, the 30 days cumulative UAEs curve is like inverted “V”, and the transpiration rate reaches the peak is earlier than cumulative UAEs. The both trends are very similar, the correlation coefficient is 0.89. Through the 24 time phase transpiration rate and cumulative UAEs proportion analysis, the conclusions can be got, the cumulative UAEs proportion is less than the transpiration rate during 00:00 – 11:59 phase, while reverse during 12:00 – 23:59 phase, and the 12:00 is an inflection point. In any case, the difference between both is not more than 10%, and the both have a better coordination and consistency. The UAE signal characteristics indicate that it is possible to use UAE as the plant body water status diagnosis index to estimate the water stress degree and guide the irrigation. |
| Starting Page | 581 |
| Ending Page | 584 |
| File Size | 203193 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781467310758 |
| e-ISBN | 9781467310789 |
| DOI | 10.1109/SPAWDA.2011.6167318 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2011-12-09 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Transducers Correlation Data acquisition Humidity Ultrasonic acoustic emission Acoustic emission UAE Physiology Cavitation diagnosis Stress |
| Content Type | Text |
| Resource Type | Article |
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