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11. 发明专利

AU2014392219A1 Heat source-free fiber positioning and orienting system for seepage of submerged or partially-submerged structures and monitoring method thereof 未知
公开(公告)号：AU2014392219A1
公开(公告)日：2016-07-14
申请号：AU2014392219
申请日：2014-12-30
申请人： UNIV HOHAI
发明人： SU HUAIZHI , YANG MENG , LI HAO , LI XING , FU ZHAOQING
IPC分类号： E02B3/00
摘要： The present invention discloses a heat source-free fiber positioning and orienting system for seepage of submerged or partially submerged structures and monitoring method thereof, which includes a plurality of seepage monitoring devices connected through rotary supports, wherein the seepage monitoring devices include first seepage monitoring units symmetrically 5 distributed on the front and back and second seepage monitoring units symmetrically distributed on left and right, seepage monitoring fibers are distributed in the first seepage monitoring units and the second seepage monitoring units, and the seepage conditions of the submerged or partially submerged structures are monitored through the seepage monitoring fibers. The heat source-free fiber positioning and orienting system for the seepage of 10 submerged or partially submerged structures according to the present invention has the characteristics of no heating, distribution manner, multiple orientations and synchronicity or the like, and has prominent advantages on such aspects like reducing the monitoring cost, improving the monitoring precision and engineering practicability or the like; and through flexibly disposing the seepage monitoring device in the submerged or partially-submerged 15 structures, the seepage position and direction are obtained through comparison of calibrated fibers and the seepage monitoring fibers; therefore, the monitoring method of the present invention is simple to operate and has accurate results.

12. 发明专利

CA2909644A1 HEAT SOURCE-FREE FIBER POSITIONING AND ORIENTING SYSTEM FOR SEEPAGE OF SUBMERGED OR PARTIALLY-SUBMERGED STRUCTURES AND MONITORING METHOD THEREOF 未知
公开(公告)号：CA2909644A1
公开(公告)日：2016-06-29
申请号：CA2909644
申请日：2014-12-30
申请人： UNIV HOHAI
发明人： SU HUAIZHI , YANG MENG , LI HAO , LI XING , FU ZHAOQING
IPC分类号： E02D33/00 , E02D29/00 , E99Z99/00
摘要： The present invention discloses a heat source-free fiber positioning and orienting system for seepage of submerged or partially submerged structures and monitoring method thereof, which includes a plurality of seepage monitoring devices connected through rotary supports, wherein the seepage monitoring devices include first seepage monitoring units symmetrically distributed on the front and back and second seepage monitoring units symmetrically distributed on left and right, seepage monitoring fibers are distributed in the first seepage monitoring units and the second seepage monitoring units, and the seepage conditions of the submerged or partially submerged structures are monitored through the seepage monitoring fibers. The heat source-free fiber positioning and orienting system for the seepage of submerged or partially submerged structures according to the present invention has the characteristics of no heating, distribution manner, multiple orientations and synchronicity or the like, and has prominent advantages on such aspects like reducing the monitoring cost, improving the monitoring precision and engineering practicability or the like; and through flexibly disposing the seepage monitoring device in the submerged or partially-submerged structures, the seepage position and direction are obtained through comparison of calibrated fibers and the seepage monitoring fibers; therefore, the monitoring method of the present invention is simple to operate and has accurate results.

13. 发明专利

NZ738396A Water structure health sensing distributed optical fiber calibration system and method 未知
公开(公告)号：NZ738396A
公开(公告)日：2019-07-26
申请号：NZ73839615
申请日：2015-11-20
申请人： UNIV HOHAI
发明人： SU HUAIZHI , YANG MENG , GUO ZHIYUN
IPC分类号： G01D18/00 , G01K15/00
摘要： The present invention discloses a water-adjacent structure health sensing distributed optical fiber calibration system and a method. The system comprises a heat insulation barrel, and a plurality of calibration modules located in the inner ring of the heat insulation barrel around an axis thereof, wherein the calibration module comprises a through-shaft, a first electronic thermometer and a second electronic thermometer, an optical cable to be calibrated is twisted on the through-shaft, the optical cable to be calibrated is connected to an optical fiber temperature demodulator outside the heat insulation barrel, the first electronic thermometer and the second electronic thermometer are respectively connected to a first temperature control meter and a second temperature control meter outside the heat insulation barrel, a temperature source wire for heating water in the heat insulation barrel is arranged in the wall of the heat insulation barrel, the temperature source wire is connected to a power temperature control meter outside the heat insulation barrel, and the first temperature control meter is connected to cooling and heating devices simultaneously through leads of the first temperature control meter. According to the water-adjacent structure health sensing distributed optical fiber calibration system of the present invention, high precision calibration on long distance optical cables can be implemented by single times by flexibly controlling the temperature changes in the heat insulation barrel through the cooling and heating devices.

14. 发明专利

AU2016279153B2 Hydraulic structure, and system and method for identifying distributed optical fiber for base seepage condition thereof 未知
公开(公告)号：AU2016279153B2
公开(公告)日：2018-07-12
申请号：AU2016279153
申请日：2016-01-08
申请人： UNIV HOHAI
发明人： SU HUAIZHI , YANG MENG
IPC分类号： G01N15/08
摘要： A hydraulic structure, and a system and a method for identifying a distributed optical fiber for a base seepage condition thereof. The system comprises a specially produced single-mode optical fiber for automatic control heat source seepage measurement (143), an optical path coupler (127), and a synchronous controller (102). The synchronous controller (102) is connected to a mode locked laser (103), a polarization beam splitter (105), an isolator (106), a grating pair (108), a diffraction grating (110), a reflector (111), a beam splitter (112), a nonlinear crystal (113), a spectrometer (114), and a Michelson interferometer (115). The output end of the Michelson interferometer (115) is connected to the optical path coupler (127). The output end of the optical path coupler (127) is connected to a detector (128) and a second optical splitter (126) separately. The detector (128) is connected to a digital signal processor (140). The second optical splitter (126) is connected to the digital signal processor (140) by means of an amplification circuit. The digital signal processor (140) is connected to the synchronous controller (102) and a collector (141) separately. The system and the method have the advantages of high precision, high spatial resolution, high sensing speed, long distance monitoring and the like, and can realize the flowing and automation of monitoring and condition identification of a hydraulic structure in a harsh environment and base seepage thereof.

15. 发明专利

SG11201710525TA WATER STRUCTURE HEALTH SENSING DISTRIBUTED OPTICAL FIBER CALIBRATION SYSTEM AND METHOD 未知
公开(公告)号：SG11201710525TA
公开(公告)日：2018-01-30
申请号：SG11201710525T
申请日：2015-11-20
申请人： UNIV HOHAI
发明人： SU HUAIZHI , YANG MENG , GUO ZHIYUN
IPC分类号： G01D18/00 , G01K15/00
摘要： A wading structure health sensing distributed optical fiber calibration system and a method includes a heat insulation barrel, and calibration modules located in the inner ring of the barrel, the calibration module comprises a through-shaft, a first electronic thermometer and a second electronic thermometer, an optical cable to be calibrated is twisted on the through-shaft and is connected to an optical fiber temperature demodulator outside the heat insulation barrel, the first and second electronic thermometers are respectively connected to first and second temperature control meters outside the barrel, a temperature source wire for heating water in the barrel arranged in the wall of the barrel, the temperature source wire connected to a power temperature control meter outside the barrel, and the first temperature control meter connected to cooling and heating devices simultaneously through leads of the first temperature control meter.

16. 发明专利

AU2014392219B2 Heat source-free fiber positioning and orienting system for seepage of submerged or partially-submerged structures and monitoring method thereof 未知
公开(公告)号：AU2014392219B2
公开(公告)日：2016-10-13
申请号：AU2014392219
申请日：2014-12-30
申请人： UNIV HOHAI
发明人： SU HUAIZHI , YANG MENG , LI HAO , LI XING , FU ZHAOQING
IPC分类号： E02B3/00
摘要： The present invention discloses a heat source-free fiber positioning and orienting system for seepage of submerged or partially submerged structures and monitoring method thereof, which includes a plurality of seepage monitoring devices connected through rotary supports, wherein the seepage monitoring devices include first seepage monitoring units symmetrically 5 distributed on the front and back and second seepage monitoring units symmetrically distributed on left and right, seepage monitoring fibers are distributed in the first seepage monitoring units and the second seepage monitoring units, and the seepage conditions of the submerged or partially submerged structures are monitored through the seepage monitoring fibers. The heat source-free fiber positioning and orienting system for the seepage of 10 submerged or partially submerged structures according to the present invention has the characteristics of no heating, distribution manner, multiple orientations and synchronicity or the like, and has prominent advantages on such aspects like reducing the monitoring cost, improving the monitoring precision and engineering practicability or the like; and through flexibly disposing the seepage monitoring device in the submerged or partially-submerged 15 structures, the seepage position and direction are obtained through comparison of calibrated fibers and the seepage monitoring fibers; therefore, the monitoring method of the present invention is simple to operate and has accurate results.

17. 发明专利

AU2014388970B2 Distributed sensing optical fiber multi-objective multi-degree-of-freedom static and dynamic test device and method 未知
公开(公告)号：AU2014388970B2
公开(公告)日：2016-09-29
申请号：AU2014388970
申请日：2014-12-26
申请人： UNIV HOHAI
发明人： SU HUAIZHI , YANG MENG
IPC分类号： G01M11/00
摘要： The present invention relates to a distributed sensing optical fiber performance multi-objective multi-degree-of-freedom static and dynamic test integrated platform and a test method. In a distributed sensing optical fiber multi-objective multi-degree-of-freedom static and dynamic test device, an optical fiber multi-degree-of-freedom fixing system is sequentially connected with an artificial loading and unloading device and an oil pressure control loading and unloading device, and an optical fiber under test is connected with the optical fiber multi-degree-of-freedom fixing system and a distributed optical fiber Brillouin frequency shift acquisition system; and test on performance of optical fiber is achieved by controlling devices in the optical fiber multi-degree-of-freedom fixing system. All parts of the test platform can be freely dissembled and assembled, and in order to complete different test requirements, a multi-objective test platform is set up, which provides large secondary development space for possible test and exploration; the device of the present invention has a large number of advantages such as a simple structure, a low cost, convenient operation, less disturbance, many test classes, strong adaptability, stable performance and convenient loading and unloading.

18. 发明专利

AU2014388970A1 Distributed sensing optical fiber multi-objective multi-degree-of-freedom static and dynamic test device and method 未知
公开(公告)号：AU2014388970A1
公开(公告)日：2016-02-11
申请号：AU2014388970
申请日：2014-12-26
申请人： UNIV HOHAI
发明人： SU HUAIZHI , YANG MENG
IPC分类号： G01M11/00
摘要： The present invention relates to a distributed sensing optical fiber performance multi-objective multi-degree-of-freedom static and dynamic test integrated platform and a test method. In a distributed sensing optical fiber multi-objective multi-degree-of-freedom static and dynamic test device, an optical fiber multi-degree-of-freedom fixing system is sequentially connected with an artificial loading and unloading device and an oil pressure control loading and unloading device, and an optical fiber under test is connected with the optical fiber multi-degree-of-freedom fixing system and a distributed optical fiber Brillouin frequency shift acquisition system; and test on performance of optical fiber is achieved by controlling devices in the optical fiber multi-degree-of-freedom fixing system. All parts of the test platform can be freely dissembled and assembled, and in order to complete different test requirements, a multi-objective test platform is set up, which provides large secondary development space for possible test and exploration; the device of the present invention has a large number of advantages such as a simple structure, a low cost, convenient operation, less disturbance, many test classes, strong adaptability, stable performance and convenient loading and unloading.

19. 发明专利

NZ738383A Distributed optical fiber identification system and method for identification of seepage conditions of a hydraulic structure and base thereof 未知
公开(公告)号：NZ738383A
公开(公告)日：2019-08-30
申请号：NZ73838316
申请日：2016-01-08
申请人： UNIV HOHAI
发明人： SU HUAIZHI , YANG MENG
IPC分类号： G01N15/08
摘要： Common distributed optical fiber temperature systems measure the temperature on the basis of the property that Raman back-scattering light is modulated by the temperature. However, these systems have the disadvantages that the pulse width is uneasy to adjust, the spatial resolution is low, and the signal to noise ratio is poor. For example, distributed optical fiber Raman temperature sensors using a pulse coding technology are directed to a single-mode optical fiber, and need to adopt complicated coding and decoding technologies in order to improve the signal to noise ratio as well as the signal extraction and resolving ability of the system, which greatly increases the operation difficulty and the design complexity of equipment. The present invention discloses a distributed optical fiber identification system and method for seepage conditions of a hydraulic structure and a base thereof. The system comprises a single-mode optical fiber having an automatic control heat source specifically produced for seepage measurement, an optical path coupler and a synchronous controller, the synchronous controller is connected to a mode locked laser, a polarization beam splitter, an isolator, a grating pair, a diffraction grating, a reflector, a beam splitter, a nonlinear crystal, a spectrometer and a Michelson interferometer, the output end of the Michelson interferometer is connected to the optical path coupler, the output end of the optical path coupler is connected to a detector and a second optical splitter respectively, the detector is connected to a digital signal processor, the second optical splitter is connected to the digital signal processor through an amplifying circuit, and the digital signal processor is connected to the synchronous controller and a collector respectively.

20. 发明专利

AU2015398793B2 Integrated system for distributed optical fiber sensing of hydraulic structure seepage, and method therefor 未知
公开(公告)号：AU2015398793B2
公开(公告)日：2019-07-18
申请号：AU2015398793
申请日：2015-10-30
申请人： UNIV HOHAI
发明人： SU HUAIZHI , YANG MENG , GU CHONGSHI
IPC分类号： G01M99/00
摘要： An integrated system for distributed optical fiber sensing of hydraulic structure seepage, comprising a specially produced optical fiber for seepage measurement (143), an optical fiber calibration apparatus, an optical fiber laying apparatus, and a seepage identification apparatus. After the optical fiber calibration apparatus calibrates the specially produced optical fiber for seepage measurement (143) on site, the specially produced optical fiber for seepage measurement (143) is laid and tested by means of the optical fiber laying apparatus, and is connected to the seepage identification apparatus for information collection, processing and analysis after the test succeeds. The system can complete high-efficiency calibration of a long-distance optical fiber and reliable control and measurement of the bending curvature. By combining the specially produced optical fiber for seepage measurement (143), having a self-controlled heat source, and a seepage identification technology based on a femtosecond pulse, the seepage of a hydraulic structure can be sensed with high precision and high spatial resolution, at high sensing speed and at long distance. Also provided is a method for distributed optical fiber sensing of hydraulic structure seepage.

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