| Non-intrusive flow measurement based on a distributed feedback fiber laser |
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| 作者姓名： | 倪家升 尚盈 王晨 赵文安 李常 曹冰 黄胜 王昌 彭刚定 |
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| 作者单位： | School of Precision Instrument and Opto-electronics Engineering;Laser Institute;School of Electrical Engineering&Telecommunications |
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| 基金项目： | supported by the National Natural Science Foundation of China(No.61605101);the Focus of R&D Projects of Shandong Province(No.2019GSF111065). |
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| 摘 要： | We propose a new non-intrusive flow measurement method using the distributed feedback fiber laser(DFB-FL)as a sensor to monitor flow in the pipe.The relationship between the wavelength of the DFB-FL and the liquid flow rate in the pipeline is derived.Under the guidance of this theory,the design and test of the flow sensor is completed.The response curve is relatively flat in the frequency range of 10 Hz to 500 Hz,and the response of the flow sensor has high linearity.The flow from 0.6 m^3/h to 25.5 m^3/h is accurately measured under the energy analysis method in different frequency intervals.A minimum flow rate of 0.046 m/s is achieved.The experimental results demonstrate the feasibility of the new non-intrusive flow measurement method based on the DFB-FL and accurate measurement of small flow rates.
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| 关 键 词： | DFB-FL FLOW non-intrusive measurement ENERGY analysis FREQUENCY INTERVAL |
Non-intrusive flow measurement based on a distributed feedback fiber laser |
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| Jiasheng Ni,Ying Shang,Chen Wang,Wenan Zhao,Chang Li,Bing Cao,Sheng Huang,Chang Wang,Gangding Peng.Non-intrusive flow measurement based on a distributed feedback fiber laser[J].中国光学快报(英文版),2020(2):44-47. |
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| Authors: | Jiasheng Ni Ying Shang Chen Wang Wenan Zhao Chang Li Bing Cao Sheng Huang Chang Wang Gangding Peng |
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| Institution: | (School of Precision Instrument and Opto-electronics Engineering,Tianjin University,Tianjin 300072,China;Laser Institute,Qilu University of Technology(Shandong Academy of Sciences),Jinan 250014,China;School of Electrical Engineering&Telecommunications,University of New South Wales,NSW 2052,Australia) |
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| Abstract: | We propose a new non-intrusive flow measurement method using the distributed feedback fiber laser(DFB-FL)as a sensor to monitor flow in the pipe. The relationship between the wavelength of the DFB-FL and the liquid flow rate in the pipeline is derived. Under the guidance of this theory, the design and test of the flow sensor is completed. The response curve is relatively flat in the frequency range of 10 Hz to 500 Hz, and the response of the flow sensor has high linearity. The flow from 0.6 m~3/h to 25.5 m~3/h is accurately measured under the energy analysis method in different frequency intervals. A minimum flow rate of 0.046 m/s is achieved. The experimental results demonstrate the feasibility of the new non-intrusive flow measurement method based on the DFB-FL and accurate measurement of small flow rates. |
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