Articles | Volume 12, issue 1
https://doi.org/10.5194/gi-12-57-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gi-12-57-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Development of an expendable current profiler based on modulation and demodulation
Keyu Zhou
School of Geophysics and Information Technology, China University of Geosciences (Beijing), Beijing 100083, China
School of Geophysics and Information Technology, China University of Geosciences (Beijing), Beijing 100083, China
Guangyuan Chen
School of Marine Science and Engineering, Shandong University of
Science and Technology, Qingdao 266000, China
Zucan Lin
School of Geophysics and Information Technology, China University of Geosciences (Beijing), Beijing 100083, China
Yunliang Liu
School of Marine Science and Engineering, Shandong University of
Science and Technology, Qingdao 266000, China
Pengyu Li
School of Geophysics and Information Technology, China University of Geosciences (Beijing), Beijing 100083, China
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Geosci. Instrum. Method. Data Syst., 13, 325–336, https://doi.org/10.5194/gi-13-325-2024, https://doi.org/10.5194/gi-13-325-2024, 2024
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This paper describes the development of a new multifunctional four-dimensional high-density electrical instrument based on remote wireless communication technology, for use in shallow geophysical prospecting. We carried out a lot of tests. Our design successfully addresses a number of shortcomings of such instruments currently available on the market, including bulkiness, weight, limitations in data acquisition accuracy, and difficulty of connecting to the Internet for remote monitoring.
Zucan Lin, Qisheng Zhang, Keyu Zhou, Xiyuan Zhang, Xinchang Wang, Hui Zhang, and Feng Liu
Geosci. Instrum. Method. Data Syst., 13, 325–336, https://doi.org/10.5194/gi-13-325-2024, https://doi.org/10.5194/gi-13-325-2024, 2024
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This paper describes the development of a controlled-source ultra-audio frequency electromagnetic receiver based on remote wireless communication technology for use in geophysical prospecting. Our design successfully addresses several shortcomings of such instruments currently available on the market, including their weight, limitations in data acquisition frequency, and difficulty in connecting to the internet for remote monitoring.
Qimao Zhang, Keyu Zhou, Ming Deng, Ling Huang, Cheng Li, and Qisheng Zhang
Geosci. Instrum. Method. Data Syst. Discuss., https://doi.org/10.5194/gi-2024-9, https://doi.org/10.5194/gi-2024-9, 2024
Preprint under review for GI
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We developed a software system for a high-precision magnetometer platform, specifically designed for human-occupied vehicles (HOVs). The system integrates magnetometers to deliver accurate magnetic field detection, with advanced features such as automatic probe switching and magnetic compensation. The system's performance was validated through rigorous laboratory tests and marine experiments on the Shenhai Yongshi platform.
Feng Guo, Qisheng Zhang, and Shenghui Liu
Geosci. Instrum. Method. Data Syst., 12, 111–120, https://doi.org/10.5194/gi-12-111-2023, https://doi.org/10.5194/gi-12-111-2023, 2023
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We propose a new type of power station unit with wireless data transmission capability, which was not supported by same type of instrument as on the market. Based on this, a novel distributed geophysical data acquisition architecture is also proposed. The proposed instrument loads more stations than the industry-leading LAUL-428 while providing additional wireless data transmission and narrowband Internet of Things remote control.
Keyu Zhou, Qisheng Zhang, Yongdong Liu, Zhen Wu, Zucan Lin, Bentian Zhao, Xingyuan Jiang, and Pengyu Li
Geosci. Instrum. Method. Data Syst., 10, 141–151, https://doi.org/10.5194/gi-10-141-2021, https://doi.org/10.5194/gi-10-141-2021, 2021
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Qimao Zhang, Shuaiqing Qiao, Qisheng Zhang, and Shiyang Liu
Geosci. Instrum. Method. Data Syst., 10, 91–100, https://doi.org/10.5194/gi-10-91-2021, https://doi.org/10.5194/gi-10-91-2021, 2021
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In order to meet the needs of geophysical exploration, the requirements of intelligent and convenient exploration instruments are realized. From the perspective of software, this research combines today's wireless transmission technology to integrate applications into mobile phones to realize remote control of field operations. It provides a new idea for geophysical exploration.
Feng Guo, Qisheng Zhang, Qimao Zhang, Wenhao Li, Yueyun Luo, Yuefeng Niu, and Shuaiqing Qiao
Geosci. Instrum. Method. Data Syst., 9, 255–266, https://doi.org/10.5194/gi-9-255-2020, https://doi.org/10.5194/gi-9-255-2020, 2020
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The CUGB-CS48DAS data acquisition system was primarily designed for seismic purposes. However, we tried to integrate the acquisition circuit for electrical purposes and implemented hardware improvements as well as software updates. Moreover, technology including narrow-band internet of things QC monitoring was also introduced. After a few field tests, the system was proven to be stable and easy to use and has a good application effect in engineering geology, mineral geology, and energy geology.
Qisheng Zhang, Wenhao Li, Feng Guo, Zhenzhong Yuan, Shuaiqing Qiao, and Qimao Zhang
Geosci. Instrum. Method. Data Syst., 8, 241–249, https://doi.org/10.5194/gi-8-241-2019, https://doi.org/10.5194/gi-8-241-2019, 2019
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Complex and harsh exploration environments have put forward higher requirements for traditional geophysical exploration methods and instruments. In this study, a new distributed seismic and electrical hybrid acquisition station is developed and it can achieve high-precision hybrid acquisition of seismic and electrical data. The synchronization precision of the acquisition station is better than 200 ns and the maximum low-power data transmission speed is 16 Mbps along a 55 m cable.
Wenhao Li, Qisheng Zhang, Qimao Zhang, Feng Guo, Shuaiqing Qiao, Shiyang Liu, Yueyun Luo, Yuefeng Niu, and Xing Heng
Geosci. Instrum. Method. Data Syst., 8, 177–186, https://doi.org/10.5194/gi-8-177-2019, https://doi.org/10.5194/gi-8-177-2019, 2019
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Feng Guo, Qisheng Zhang, Qimao Zhang, Wenhao Li, Yueyun Luo, Yuefeng Niu, and Shauiqing Qiao
Geosci. Instrum. Method. Data Syst. Discuss., https://doi.org/10.5194/gi-2018-48, https://doi.org/10.5194/gi-2018-48, 2019
Revised manuscript not accepted
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The CUGB-CS48DAS data acquisition system was designed for seismic purpose at first. However, we tried to integrate the acquisition circuit and after several hardware improvements and software updates, it can be used now for seismic exploration as well as electrical prospecting.
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Shuangshuang Cheng, Ming Deng, Meng Wang, Sheng Jin, Qisheng Zhang, and Kai Chen
Geosci. Instrum. Method. Data Syst., 8, 13–19, https://doi.org/10.5194/gi-8-13-2019, https://doi.org/10.5194/gi-8-13-2019, 2019
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High-power transmitters have been playing a significant role in deep electromagnetic exploration. However, a high-power transmitter needs high-voltage support, which is a potential risk for researchers. According to the actual situation of field exploration, we designed a wireless monitoring system. The system offers two advantages, the first of which is high security; the second advantage is simple operation.
Shuaiqing Qiao, Hongmei Duan, Qisheng Zhang, Qimao Zhang, Shuhan Li, Shenghui Liu, Shiyang Liu, Yongqing Wang, Shichu Yan, Wenhao Li, and Feng Guo
Geosci. Instrum. Method. Data Syst., 7, 253–263, https://doi.org/10.5194/gi-7-253-2018, https://doi.org/10.5194/gi-7-253-2018, 2018
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In this study, a high-precision distributed wireless microseismic acquisition system has been designed for oil and gas exploration. The system design, which was based on the ADS1274 chip manufactured by TI, made full use of the four channels of the chip to collect vibration signals in three directions and one electrical signal, respectively. Furthermore, the acquisition system used GPS and WIFI technologies to achieve distributed wireless acquisition.
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Geosci. Instrum. Method. Data Syst., 6, 495–503, https://doi.org/10.5194/gi-6-495-2017, https://doi.org/10.5194/gi-6-495-2017, 2017
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We believe that our study full-waveform voltage and current recording device for MTEM transmitters makes a significant contribution to the literature because this full-waveform recording device can be used to monitor the high-power, full-waveform voltages and currents of MTEM transmitters. It has high precision, finer edge details, low noise, and other advantages. Hence, it can be used for real-time recording and transmission to the receiver for coherent demodulation.
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Geosci. Instrum. Method. Data Syst., 6, 263–267, https://doi.org/10.5194/gi-6-263-2017, https://doi.org/10.5194/gi-6-263-2017, 2017
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Xinyue Zhang, Qisheng Zhang, Xiao Zhao, Qimao Zhang, Shenghui Liu, Shuhan Li, and Zhenzhong Yuan
Geosci. Instrum. Method. Data Syst., 6, 209–215, https://doi.org/10.5194/gi-6-209-2017, https://doi.org/10.5194/gi-6-209-2017, 2017
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In this study, we propose a more accurate method for calculating the current velocity from the nanovolt-scale current-induced electric field as measured using an expendable current profiler (XCP). In order to confirm the accuracy of the proposed data processing method, a sea test was performed, wherein ocean current/electric field data were collected from the sea surface to a depth of 1000 m using an XCP.
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Stefano Gianessi, Matteo Polo, Luca Stevanato, Marcello Lunardon, Till Francke, Sascha E. Oswald, Hami Said Ahmed, Arsenio Toloza, Georg Weltin, Gerd Dercon, Emil Fulajtar, Lee Heng, and Gabriele Baroni
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Soil moisture monitoring is important for many applications, from improving weather prediction to supporting agriculture practices. Our capability to measure this variable is still, however, limited. In this study, we show the tests conducted on a new soil moisture sensor at several locations. The results show that the new sensor is a valid and compact alternative to more conventional, non-invasive soil moisture sensors that can pave the way for a wide range of applications.
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Temperature-sensor-incorporated waders worn by the public can give scientists an additional source of information on stream water-groundwater interaction. A pair of waders was equipped with a thermistor and calibrated in the lab. Field tests in a deep polder ditch with a known localized groundwater contribution showed that the waders are capable of identifying the boil location. This can be used to decide where the most interesting places are to do more detailed and more expensive research.
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Cited articles
Dohnal G.: Weak signal detection in SPC[J], Appl. Stoch. Model. Bus. Ind.,
36, 225–236, https://doi.org/10.1002/asmb.2480, 2019.
Dunlap, J., Drever, R., and Sanford, T.: Experience with an expendable
temperature and velocity profiler, in: Proceedings of the Oceans 81, 16–18 September 1981, Boston, MA, USA, 372–376, https://doi.org/10.1109/OCEANS.1981.1151622, 1981.
Hibiya, T., Nagasawa, M., and Niwa, Y.: Global mapping of diapycnal diffusivity in the deep ocean based on the results of expendable current
profiler (XCP) surveys, Geophys. Res. Lett., 33, 151–160, https://doi.org/10.1029/2005gl025218, 2006.
INA128: INA12x Precision, Low-Power Instrumentation Amplifiers, https://www.ti.com.cn/product/zh-cn/INA128?keyMatch=INA128&tisearch=search-everything&usecase=GPN, last access: 20 June 2022.
Jenkins, A. D. and Bye, J. A. T.: Some aspects of the work of V. W. Ekman,
Polar Rec., 42, 15–22, https://doi.org/10.1017/S0032247405004845, 2006.
Jichang, S., Libin, D., Yingying, Z., and Guoxing, R.: he Algorithm of Data Repairing for Expendable Current Profiler Based on Neural Networks, in: Proceedings of the 2009 International Workshop on Intelligent Systems and Applications, Hubei University of Technology, 23–24 May 2009, Wuhan, China, https://doi.org/10.1109/IWISA.2009.5073161, 2009.
Lai, X., Wang, C., and Ge, L.: Research on small signal amplification circuit of downhole instrument, in: Proceedings of 2012 National Conference on Information Technology and Computer Science, 16–18 November 2012, Lanzhou, China, https://doi.org/10.2991/citcs.2012.128, 2012.
Le Menn, M. and Morvan, S.: Velocity Calibration of Doppler Current Profiler Transducers, J. Mar. Sci. Eng., 8, 847, https://doi.org/10.3390/jmse8110847, 2020.
Levkov, C. L.: Amplification of biosignals by body potential driving – analysis of the circuit performance, Med. Biol. Eng. Comput., 26, 389–396, https://doi.org/10.1007/bf02442297, 1988.
Li, S., Zhang, Q., Zhao, X., Liu, S., Yuan, Z., and Zhang, X.: Dynamic data
transmission technology for expendable current profiler based on low-voltage
differential signaling, Geosci. Instrum. Method. Data Syst., 6, 263–267,
https://doi.org/10.5194/gi-6-263-2017, 2017.
Li, S.-H., Zhang, Q.-S., Zhao, X., Liu, S.-H., Zhang, X.-Y., and Yuan, Z.-Z.:
Dynamic data transmission technology designed for expendable current profiler, IEEE J. Ocean. Eng, 43, 66–71, https://doi.org/10.1109/JOE.2017.2689898, 2018.
Liu, N., Zhang, R., Chen, W. Y., and Zhang, M. M.: Numerical Study of XCP Probe's Fluid Dynamic Characteristics, in: Applied Mechanics and Materials Vols. 130–134, Trans Tech Publications, Ltd., 1645–1649, https://doi.org/10.4028/www.scientific.net/amm.130-134.1645, 2011.
Liu, S., Zhang, Q., Zhao, X., Li, T., Zhang, X., and Li, S.: Expendable current profiler for measuring the electric field induced by ocean currents,
Meas. Control., 50, 62–69, https://doi.org/10.1177/0020294017702282, 2017.
Liu, S. H., Zhang, Q. S., Zhao, X., Zhang, X. Y., Li, S. H., and Jing, J. N.: Study of an expendable current profiler detection method, Ocean Eng., 132, 40–44, https://doi.org/10.1016/j.oceaneng.2017.01.018, 2017.
Lu, S., Lei, W., Wang, Q., Liu, W., Li, K., Yuan, P., and Yu, H.: A novel
approach for weak current signal processing of self-powered sensor based on
TENG, Nano Energy, 103, 107728, https://doi.org/10.1016/j.nanoen.2022.107728, 2022.
Murtianta, B., Tirtayasa, J. P., and Setiaji, F. D.: Pengaruh LPF orde satu dan dua pada karakteristik PLL menggunakan IC CD4046, Techné, 15, 141–148, https://doi.org/10.31358/techne.v15i02.149, 2016.
Niiler, P. P., Lee, D.-K., Young, W., and Hu, J.-H.: Expendable current
profiler (XCP) section across the North Pacific at 25∘ N, Deep-Sea
Res. Pt. A, 38, S45–S61, https://doi.org/10.1016/S0198-0149(12)80004-5, 1991.
Peltier, Y., Rivière, N., Proust, S., Mignot, E. J. M., Paquier, A., and Shiono, K.: Estimation of the error on the mean velocity and on the Reynolds stress due to a misoriented ADV probe in the horizontal plane: Case of experiments in a compound open-channel, Flow Meas. Instrum., 34, 34–41,
https://doi.org/10.1016/j.flowmeasinst.2013.08.002, 2013.
Ren, G. X. and Cheng, Y.: Study and implementation of expendable current
profiler measurement, Adv. Mat. Res., 301–303, 133–138,
https://doi.org/10.4028/www.scientific.net/amr.301-303.133, 2011.
Sanford, T.: Velocity profiling: Some expectations and assurances, in:
Proceedings of the IEEE Second Working Conference on Current Measurement,
January 1982, Hilton Head, SC, USA, 101–112, https://doi.org/10.1109/CCM.1982.1158423, 1982.
Sanford, T. B.: Motionally induced electric and magnetic fields in the sea, J. Geophys. Res.-Oceans., 76, 3476–3492, https://doi.org/10.1029/JC076i015p03476, 1971.
Sanford, T. B., Drever, R. G., and Dunlap, J. H.: A velocity profiler based on the principles of geomagnetic induction, Deep-Sea Res., 25, 183–210,
https://doi.org/10.1016/0146-6291(78)90006-1, 1978.
Sanford, T. B., Drever, R. G., Dunlap, J. H., and D'Asaro, E. A.: Design, operation and performance of an expendable temperature and velocity profiler (XTVP), https://apps.dtic.mil/sti/citations/ADA115659 (last access: 10 December 2022), 1982.
Si, K.-B., Huang, J., and Yang, Y.-D.: Research on Small Signal Amplification Chain Based on Pressure Bridge Circuits, Res. Explor. Labor., 35, 143–146, 2016.
Simpson, M. R.: Discharge measurements using a broad-band acoustic doppler
current profiler, US Geological Survey, California, https://doi.org/10.3133/ofr011, 2002.
Szuts, Z. B.: Using motionally-induced electric signals to indirectly measure
ocean velocity: Instrumental and theoretical developments, Prog. Oceanogr.,
96, 108–127, https://doi.org/10.1016/j.pocean.2011.11.014, 2012.
Zhang, Q. S., Deng, M., Wang, Q., Feng, Y. Q., and Yang, R.: Dynamic data
transmission technique for expendable current profiler, Adv. Mat. Res.,
219–220, 436–440, https://doi.org/10.4028/www.scientific.net/amr.219-220.436, 2011.
Zhang, X. Y., Zhang, Q. S., Zhao, X., Zhang, Q. M., Liu, S. H., Li, S. H., and Yuan, Z. Z.: Method for processing XCP data with improved accuracy, Geosci. Instrum. Method. Data Syst., 6, 209–215, https://doi.org/10.5194/gi-6-209-2017, 2017.
Zhang Qisheng, D. M., Liu Ningkong, S. D., and Liang, K. S.: Development of
disposable ocean current electric field profiler, Chinese J. Geophys., 56,
3699–3707, 2013.
Zhihong, X., Zongqi, G., and Danjiang, C.: The Research and Application of FM
Circuit based on CD4046 in the Traffic Information Release System, in:
Proceedings of the 2008 International Conference on Computer Science and
Information Technology, 29 August–2 September 2008, Singapore, SG, https://doi.org/10.1109/ICCSIT.2008.66, 2008.
Short summary
The expendable current profiler (XCP) is a single-use instrument that rapidly measures currents, including the velocity, flow direction, and temperature of seawater. This study improves upon the design of the XCP to reduce the cost of the single-use devices. This has been achieved by adopting signal modulation and demodulation to transmit analog signals on an enamelled wire and digitizing the signal above the surface of the water.
The expendable current profiler (XCP) is a single-use instrument that rapidly measures currents,...