Cargando…

A New Weak-Coupling Method with Eccentric Dual Bucking Coils Applied to the PRBS Helicopter TEM System

In the helicopter transient electromagnetic system (HTEM), weak-coupling coils reduce the mutual inductance of the transmitting and receiving coils, which can protect the data acquisition circuit and improve the signal-to-noise of the system. The PRBS HTEM system is a newly proposed multi-receiver E...

Descripción completa

Detalles Bibliográficos
Autores principales: Ke, Zhen, Liu, Lihua, Jiang, Longbin, Yan, Shichu, Ji, Yicai, Liu, Xiaojun, Fang, Guangyou
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9003436/
https://www.ncbi.nlm.nih.gov/pubmed/35408289
http://dx.doi.org/10.3390/s22072675
_version_ 1784686133773336576
author Ke, Zhen
Liu, Lihua
Jiang, Longbin
Yan, Shichu
Ji, Yicai
Liu, Xiaojun
Fang, Guangyou
author_facet Ke, Zhen
Liu, Lihua
Jiang, Longbin
Yan, Shichu
Ji, Yicai
Liu, Xiaojun
Fang, Guangyou
author_sort Ke, Zhen
collection PubMed
description In the helicopter transient electromagnetic system (HTEM), weak-coupling coils reduce the mutual inductance of the transmitting and receiving coils, which can protect the data acquisition circuit and improve the signal-to-noise of the system. The PRBS HTEM system is a newly proposed multi-receiver EM measurement system, which can effectively identify the system impulse response of the unknown geological model based on the high-precision synchronous recording signal of the PRBS emitted current and induced voltage. However, the standard PRBS current signal is turned on/off very quickly, easily resulting in signal saturation. Concerning this problem, this paper proposes a new weak-coupling structure named eccentric dual bucking coils for the multi-receiver EM system by analyzing the on/off characteristics of PRBS current and the magnetic field distribution of the transmitter–receiver system. It also verifies the feasibility of the proposed structure by Maxwell software simulation. Furthermore, considering the influence of the residual primary field and other factors, the data preprocessing results of the PRBS method and the traditional square wave method are compared by theoretical analysis and data simulation, and the results show that the earlier-time response data can be obtained by PRBS method under the same simulation conditions. Finally, the reliability of the proposed method is verified by ground experiment.
format Online
Article
Text
id pubmed-9003436
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-90034362022-04-13 A New Weak-Coupling Method with Eccentric Dual Bucking Coils Applied to the PRBS Helicopter TEM System Ke, Zhen Liu, Lihua Jiang, Longbin Yan, Shichu Ji, Yicai Liu, Xiaojun Fang, Guangyou Sensors (Basel) Article In the helicopter transient electromagnetic system (HTEM), weak-coupling coils reduce the mutual inductance of the transmitting and receiving coils, which can protect the data acquisition circuit and improve the signal-to-noise of the system. The PRBS HTEM system is a newly proposed multi-receiver EM measurement system, which can effectively identify the system impulse response of the unknown geological model based on the high-precision synchronous recording signal of the PRBS emitted current and induced voltage. However, the standard PRBS current signal is turned on/off very quickly, easily resulting in signal saturation. Concerning this problem, this paper proposes a new weak-coupling structure named eccentric dual bucking coils for the multi-receiver EM system by analyzing the on/off characteristics of PRBS current and the magnetic field distribution of the transmitter–receiver system. It also verifies the feasibility of the proposed structure by Maxwell software simulation. Furthermore, considering the influence of the residual primary field and other factors, the data preprocessing results of the PRBS method and the traditional square wave method are compared by theoretical analysis and data simulation, and the results show that the earlier-time response data can be obtained by PRBS method under the same simulation conditions. Finally, the reliability of the proposed method is verified by ground experiment. MDPI 2022-03-30 /pmc/articles/PMC9003436/ /pubmed/35408289 http://dx.doi.org/10.3390/s22072675 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Ke, Zhen
Liu, Lihua
Jiang, Longbin
Yan, Shichu
Ji, Yicai
Liu, Xiaojun
Fang, Guangyou
A New Weak-Coupling Method with Eccentric Dual Bucking Coils Applied to the PRBS Helicopter TEM System
title A New Weak-Coupling Method with Eccentric Dual Bucking Coils Applied to the PRBS Helicopter TEM System
title_full A New Weak-Coupling Method with Eccentric Dual Bucking Coils Applied to the PRBS Helicopter TEM System
title_fullStr A New Weak-Coupling Method with Eccentric Dual Bucking Coils Applied to the PRBS Helicopter TEM System
title_full_unstemmed A New Weak-Coupling Method with Eccentric Dual Bucking Coils Applied to the PRBS Helicopter TEM System
title_short A New Weak-Coupling Method with Eccentric Dual Bucking Coils Applied to the PRBS Helicopter TEM System
title_sort new weak-coupling method with eccentric dual bucking coils applied to the prbs helicopter tem system
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9003436/
https://www.ncbi.nlm.nih.gov/pubmed/35408289
http://dx.doi.org/10.3390/s22072675
work_keys_str_mv AT kezhen anewweakcouplingmethodwitheccentricdualbuckingcoilsappliedtotheprbshelicoptertemsystem
AT liulihua anewweakcouplingmethodwitheccentricdualbuckingcoilsappliedtotheprbshelicoptertemsystem
AT jianglongbin anewweakcouplingmethodwitheccentricdualbuckingcoilsappliedtotheprbshelicoptertemsystem
AT yanshichu anewweakcouplingmethodwitheccentricdualbuckingcoilsappliedtotheprbshelicoptertemsystem
AT jiyicai anewweakcouplingmethodwitheccentricdualbuckingcoilsappliedtotheprbshelicoptertemsystem
AT liuxiaojun anewweakcouplingmethodwitheccentricdualbuckingcoilsappliedtotheprbshelicoptertemsystem
AT fangguangyou anewweakcouplingmethodwitheccentricdualbuckingcoilsappliedtotheprbshelicoptertemsystem
AT kezhen newweakcouplingmethodwitheccentricdualbuckingcoilsappliedtotheprbshelicoptertemsystem
AT liulihua newweakcouplingmethodwitheccentricdualbuckingcoilsappliedtotheprbshelicoptertemsystem
AT jianglongbin newweakcouplingmethodwitheccentricdualbuckingcoilsappliedtotheprbshelicoptertemsystem
AT yanshichu newweakcouplingmethodwitheccentricdualbuckingcoilsappliedtotheprbshelicoptertemsystem
AT jiyicai newweakcouplingmethodwitheccentricdualbuckingcoilsappliedtotheprbshelicoptertemsystem
AT liuxiaojun newweakcouplingmethodwitheccentricdualbuckingcoilsappliedtotheprbshelicoptertemsystem
AT fangguangyou newweakcouplingmethodwitheccentricdualbuckingcoilsappliedtotheprbshelicoptertemsystem