|
|
|
| Broadband ADCP Flow Rate Calibration System Based on FPGA |
| CHEN Yiji1,GUO Shixu1,WANG Xiaobo2,JIAO Junsheng1,ZHAO Peng1 |
1.Key Laboratory of In Situ Metrology Ministry of Education, China Jiliang University, Hangzhou, Zhejiang 310018, China
2. Zhejiang Institute of Metrology, Key Laboratory of Acoustics and Vibration Precision Measuring Technology for State Market Regulation, Hangzhou, Zhejiang 310063, China |
|
|
|
|
Abstract The ADCP (acoustic Doppler velocity profiler) can use the method of acoustic response and emission of simulated echoes to carry out flow calibration,but the calibration accuracy and the lower limit of calibration flow velocity are affected by the system clock precision.At present,the ADCP flow calibration system based on this method is difficult to calibrate the small flow velocity of less than 1 m/s.To provides a low-cost,water pool environment implementable broadband ADCP flow calibration system scheme,which is to design a broadband ADCP flow calibration system based on FPGA,collect and process the ADCP transmitted acoustic wave signal,and then transmit the simulated echo signal carrying water flow velocity information to the ADCP.By comparing the simulated velocity value with the actual output value,the flow calibration of the ADCP can be realized.The calibration system uses DDS+PLL (direct digital frequency synthesis and phase-locked frequency synthesis) technology to synthesize high-precision clock signals.The clock signals drive signal acquisition and playback to generate high-precision simulated echo signals.Finally,in a small anechoic water pool,the calibration experiments are carried out for the broadband ADCP with a center frequency of 300 kHz in the small flow velocity range of (0.2~1)m/s.The results show that the measurement uncertainty of this calibration system reaches (0.5% simulated flow velocity + 0.005)m/s,which verifies the reliability of the calibration system.
|
|
Received: 26 July 2023
Published: 04 July 2024
|
|
|
| Fund:National Key R&D Program of China |
|
|
|
| ［5］ |
乔正明, 肖熹, 吴姚振, 等. ADCP应用研究: 声学多普勒流速剖面仪检定水槽拖车试验综述 ［J］. 海洋开发与管理, 2017, 34 (12): 81-84.
|
| ［10］ |
费业泰. 误差理论与数据处理［M］. 北京:机械工业出版社, 2015.
|
|
LI J M, ZHAO J W, WANG M Z, et al. A High Precision Technique for Simulating Underwater Target Echo ［J］. Chinese Journal of Scientific Instrument, 2006 (6): 560-563.
|
| ［3］ |
BRUMLEY B H, CABRERA R G, DEINES K L, et al. Performance of a Broad-Band Acoustic Doppler Current Profler ［J］. IEEE Journal of Oceanic Engineering, 1991, 16 (4): 402-407.
|
|
WANG J Q, WANG J, WANG C. Analysis on the broadband and narrowband performance of Acoustics Doppler Current Profiler ［J］. Water ConservancyConstruction & Management, 2016, 36 (10): 31-34.
|
|
QIAO Z M, XIAO X, WU Y Z, et al. Review of ADCP Verification by Flume Towing Test ［J］. Ocean Development and Management, 2017, 34 (12): 81-84.
|
|
ZHI Y M, SHAO J, TANG Y P, et al. Discussion on driving scheme of ADCP current meter verification trailer ［J］. China MeasuＲement ＆ Test, 2016, 42 (11): 79-83, 93.
|
|
GUO S X, YANG X J, WANG Y B, et al. Research on Field Calibration Method of ADCP Velocity Based on Frequency Offset Response ［J］. Acta Metrologica Sinica, 2021, 42 (1): 53-58.
|
|
HUANG X F, YUAN B C, CHEN X, et al. Semi-physical simulation method of phased array doppler log and its realization ［J］. Journal of Wuhan University of Technology (Transportation Science And Engineering), 2011, 35 (5): 1063-1066.
|
| ［11］ |
声学多普勒流速剖面仪:GB/T 24558—2009［S］.2009.
|
| ［15］ |
易志强, 赵知劲, 马修准,等. 宽带声学多普勒流速剖面仪球面散射回波模型研究 ［J］. 计量学报, 2016, 37 (6): 610-614.
|
| ［16］ |
王佳荣. 基于DDS技术的信号发生器设计［D］.长春:吉林大学, 2015.
|
| ［17］ |
邓正森. 基于锁相环技术频率合成研究与设计［D］.成都:电子科技大学, 2011.
|
| ［18］ |
陈科, 叶建芳, 马三涵. 基于DDS+PLL技术频率合成器的设计与实现 ［J］. 国外电子测量技术, 2010, 29 (4): 43-47.
|
| ［19］ |
黄建纯, 郭圣明, 郭中源, 等. 水声宽带信号的多普勒补偿 ［J］. 声学技术, 2009, 28 (2): 99-103.
|
| ［21］ |
陈长安, 吴碧, 王升. 水下声速计算公式的优化选择 ［J］. 舰船科学技术, 2014, 36 (6): 77-80.
|
| ［1］ |
刘彦祥. ADCP技术发展及其应用综述 ［J］. 海洋测绘, 2016, 36 (2): 45-49.
|
| ［7］ |
李占桥, 田志光, 吴宝勤. 两种型号RDI ADCP测速精度分析 ［J］. 海洋测绘, 2012, 32 (6): 57-59.
|
| ［13］ |
SHI L, XU W, XU Y. A broadband ADCP scattering echo model［C］//OCEANS 2014-Taipei. IEEE, Taipei, China, 2014.
|
|
HUANG J C, GUO S M, GUO Z Y, et al. Doppler compensation on underwater acoustic wideband signals ［J］. Technical Acoustics, 2009, 28 (2): 99-103.
|
|
LIU Y X. Review on Development of ADCP Technology and Its Application ［J］. Hydrographic Surveying and Charting, 2016, 36 (2): 45-49.
|
| ［2］ |
刘德铸. 声学多普勒流速测量关键技术研究［D］. 哈尔滨:哈尔滨工程大学, 2010.
|
| ［4］ |
王骏秋, 王江, 王成. 声学多普勒流量流速剖面仪宽带与窄带性能分析 ［J］. 水利建设与管理, 2016, 36 (10): 31-34.
|
| ［6］ |
智永明, 邵军, 唐跃平, 等. ADCP 流速仪检定拖车驱动方案探讨 ［J］. 中国测试, 2016, 42 (11): 79-83, 93.
|
|
LI Z Q, TIAN Z G, WU B Q. Analysis on Velocity Measuring Accuracy of RDI ADCP ［J］. Hydrographic Surveying and Charting, 2012, 32 (6): 57-59.
|
| ［8］ |
郭世旭, 杨枭杰, 王月兵, 等. 基于频偏应答的ADCP流速现场校准方法研究 ［J］. 计量学报, 2021, 42 (1): 53-58.
|
| ［9］ |
黄雄飞, 苑秉成, 陈喜, 等. 相控阵多普勒计程仪半实物仿真方法研究及其实现 ［J］. 武汉理工大学学报 (交通科学与工程版), 2011, 35 (5): 1063-1066.
|
| ［12］ |
李金明, 赵俊渭, 王明洲, 等. 一种高精度水下目标回波模拟技术的研究 ［J］. 仪器仪表学报, 2006, (6): 560-563.
|
| ［14］ |
黄雄飞, 苑秉成. 宽带多普勒声呐回波模型及特性研究 ［J］. 武汉理工大学学报 (交通科学与工程版), 2012, 36 (1): 161-164.
|
|
HUANG X F, YUAN B C. Study on Echo Model and Characteristics of Broadband Doppler Sonar ［J］. Journal of Wuhan University of Technology (Transportation Science &. Engineering), 2012, 36 (1): 161-164.
|
|
YI Z Q, ZHAO Z J, MA X Z, et al. Research on Spherical Scattering Echo Model for Broadband Acoustic Doppler Current Profiler ［J］. Acta Metrologica Sinica, 2016, 37 (6): 610-614.
|
|
CHEN K, YE J F, Ma S H. Design and implementation of frequency synthesizer based on DDS & PLL ［J］. Foreign Electronic Measurement Technology, 2010, 29 (4): 43-47.
|
| ［20］ |
黄雄飞, 周徐昌, 何建军. 声学多普勒海流剖面仪误差源分析 ［J］. 声学与电子工程, 2006 (4): 1-3.
|
|
HUANG X F, ZHOU X C, HE J J. Error source analysis of acoustic Doppler current profiler ［J］. Acoustics and Electronics Engineering, 2006 (4): 1-3.
|
|
CHEN C A, WU B, WANG S. Research on optimization selection of computation formulas for underwater sound velocity ［J］. Ship Science and Technology, 2014, 36 (6): 77-80.
|
|
|
|
2024, Vol. 45 
