CN100580728C - Communication device inside and outside the pipeline based on very low frequency power electromagnetic pulse - Google Patents
Communication device inside and outside the pipeline based on very low frequency power electromagnetic pulse Download PDFInfo
- Publication number
- CN100580728C CN100580728C CN200810064022A CN200810064022A CN100580728C CN 100580728 C CN100580728 C CN 100580728C CN 200810064022 A CN200810064022 A CN 200810064022A CN 200810064022 A CN200810064022 A CN 200810064022A CN 100580728 C CN100580728 C CN 100580728C
- Authority
- CN
- China
- Prior art keywords
- output terminal
- low frequency
- input end
- frequency power
- electromagnetic pulse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000004891 communication Methods 0.000 title claims abstract description 34
- 238000012545 processing Methods 0.000 claims abstract description 13
- 230000006698 induction Effects 0.000 claims abstract description 11
- 238000007405 data analysis Methods 0.000 claims abstract description 3
- 239000000284 extract Substances 0.000 claims abstract description 3
- 230000009466 transformation Effects 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 239000000956 alloy Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 7
- 239000002689 soil Substances 0.000 abstract description 4
- 239000013535 sea water Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- GUTLYIVDDKVIGB-OUBTZVSYSA-N Cobalt-60 Chemical compound [60Co] GUTLYIVDDKVIGB-OUBTZVSYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000012372 quality testing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- -1 silt Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
基于甚低频功率电磁脉冲的管道内外通讯装置，它涉及通信领域，它解决了金属层对电磁信号带来的屏蔽问题。本发明的甚低频功率电磁脉冲发射器及其微控制器(3)的发射端发射出甚低频功率电磁脉冲信号，磁感应接收天线组(4)接收甚低频功率电磁脉冲信号转换并为电压信号，传输给信号处理与传输装置(5)中，信号处理与传输装置(5)将电压信号进行滤波放大，提取出与发射器频率相同的信号分量，并传输到计算机(6)进行数据分析，解析通讯指令。本发明实现了金属管道环境下内外的可靠通讯，在金属、泥沙土层及海水环境中传播时，其电磁信号衰减因子较小。对比高频电磁波信号，其在损耗介质中的传播距离大幅度提高。
The invention relates to a pipeline internal and external communication device based on a very low frequency power electromagnetic pulse, which relates to the field of communication, and solves the shielding problem caused by a metal layer to electromagnetic signals. The very low frequency power electromagnetic pulse transmitter of the present invention and the transmitting end of the microcontroller (3) emit a very low frequency power electromagnetic pulse signal, and the magnetic induction receiving antenna group (4) receives the very low frequency power electromagnetic pulse signal and converts it into a voltage signal, Transmission to the signal processing and transmission device (5), the signal processing and transmission device (5) filters and amplifies the voltage signal, extracts the signal component with the same frequency as the transmitter, and transmits it to the computer (6) for data analysis, parsing communication command. The invention realizes the reliable internal and external communication in the metal pipeline environment, and its electromagnetic signal attenuation factor is small when it propagates in the metal, silt soil layer and seawater environment. Compared with the high-frequency electromagnetic wave signal, its propagation distance in the lossy medium is greatly improved.
Description
Technical field
The present invention relates to the communications field, be specifically related to the inside and outside mechanics of communication of metallic conduit.
Background technology
Along with the sharp increase of institute of department pipeline installations such as China's oil chemical industry and urban construction, there is great demand the aspects such as distribution mapping that the interior dirt of defective maintenance, pipe that the quality testing of new tubing, old pipeline are existed stops up cleaning and unknown underground utilities.Guan in mobile vehicle be exactly the device that is specifically designed to detection, pigging and operation in the pipework, it can carry various instruments and move in pipe, finishes engineering duties such as operation such as pipeline inspection, blocking Leakage and pigging.In the past in the pipework to the maintenance job of getting rid of the danger of trouble spot because the target location bearing accuracy is lower, often take large tracts of land method for digging blindly, not only construction is complicated, does not bring artificial destruction to decreasing pipeline, and causes the bigger wasting of resources.
The complicated diversity of pipework impels the direction that mobile vehicle can be surveyed (spike location) towards motion autonomous (no cable), inside and outside communication (information reception and registration), position in the pipe to develop, to improve its practicality in engineering.Mobile vehicle is all multi-functional in wanting to realize managing, and key is to select for use reliable piping inside and outside communication device.The metallic conduit environment of sealing has stronger shielding action to high frequency electromagnetic wave signal, and wireless communication techniques such as the radio frequency of widespread use at present, microwave all can't be applied to pipework.Adopt radiographic source (X ray, cobalt-60 etc.) though mode can realize that tube wall detects and pipeline among a small circle in external signal pass on, but can't realize multinomial communications protocol, and its stronger radioactivity is brought bigger harm (especially in submarine pipeline) to biological with surrounding environment.And traditional the cable communication modes arranged, can't realize online remote pipeline operations requirement.Existing application is in the mine and the long wave transmission technology of underwater communication, though the signal that can be implemented in the media such as water, silt, soil layer is propagated, still can't satisfy requirement of engineering for communication problem inside and outside under the metallic conduit environmental baseline.
Summary of the invention
The present invention is primarily aimed at a mobile vehicle operation and the not detectable difficult problem of job information in the metal tube, solves the shielding problem that metal level brings electromagnetic signal, and has proposed a kind of piping inside and outside communication device based on very low frequency power electromagnetic pulse.
The present invention includes very low frequency power electromagnetic pulse transmitter and microcontroller 3 thereof, magnetic induction receiving antenna group 4, signal Processing and transmitting device 5 and computing machine 6; The transmitting terminal of very low frequency power electromagnetic pulse transmitter and microcontroller 3 thereof is launched the very low frequency power electromagnetic pulse signal, magnetic induction receiving antenna group 4 receives the very low frequency power electromagnetic pulse conversion of signals and is voltage signal, be transferred in signal Processing and the transmitting device 5, signal Processing and transmitting device 5 carry out filtering with voltage signal and amplify, extract the component of signal identical with transmitter frequency, and be transferred to computing machine 6 and carry out data analysis, resolve communication instruction; Very low frequency power electromagnetic pulse transmitter and microcontroller 3 thereof are by single-chip microcomputer 3-1, D/A conversion 3-2, power amplifier 3-3, transmitting coil 3-4, magnetic core 3-5, reserve battery 3-6, the first voltage transformation module 3-7, the second voltage transformation module 3-8, microcontroller 3-9, battery charger 3-10, switch S
1, switching tube S
2, relay S
3, stabilivolt D
1, the first diode D
2, the second diode D
3, first resistance R
1, second resistance R
2, 24V power lead L
1, CAN connection L
2, ground wire L
3Form; 24V power lead L
1The input end and the switch S that connect the first voltage transformation module 3-7
1An end, the output terminal of the first voltage transformation module 3-7 connects the first diode D
2Anode, the first diode D
2Negative electrode connect input end, first resistance R of the second voltage transformation module 3-8
1An end, the second diode D
3First input end, the first input end of D/A conversion 3-2 and the first input end of power amplifier 3-3 of negative electrode, single-chip microcomputer 3-1; The output terminal of the second voltage transformation module 3-8 connects the first input end of microcontroller 3-9; Second input end of microcontroller 3-9 connects first resistance R
1The other end, second resistance R
2An end and stabilivolt D
1Negative electrode; Second resistance R
2The other end and stabilivolt D
1Plus earth; The 3rd input end of microcontroller 3-9 connects CAN connection L
2First output terminal of microcontroller 3-9 connects switching tube S
2Base stage, switching tube S
2Grounded emitter, switching tube S
2Collector connect the output terminal of transmitting coil 3-4, first output terminal of single-chip microcomputer 3-1, first output terminal of D/A conversion 3-2 and first output terminal of power amplifier 3-3; Second output terminal of microcontroller 3-9 connects second input end of single-chip microcomputer 3-1, second output terminal of single-chip microcomputer 3-1 connects second input end of D/A conversion 3-2, second output terminal of D/A conversion 3-2 connects second input end of power amplifier 3-3, second output terminal of power amplifier 3-3 connects the input end of transmitting coil 3-4, and transmitting coil 3-4 is wrapped on the magnetic core 3-5; Relay S
3One end of coil is connected ground wire L
3On, relay S
3The other end of coil passes through switch S
1Be connected 24V power lead L
1On, ground wire L
3Connect the end of reserve battery 3-6 and the output terminal of battery charger 3-10, the other end of reserve battery 3-6 connects another output terminal and the relay S of battery charger 3-10
3An electric shock, relay S
3Another get an electric shock to connect second diode D
3Anode.
Utilize the stronger through characteristic of very low frequency power electromagnetic pulse, developed the inside and outside communication system of a cover high-efficiency reliable pipeline,, carried out a large amount of experimental works for the practicality of the piping inside and outside communication device of verifying invention.
1) the very low frequency power electromagnetic pulse signal is to the penetrability of metal pipe-wall: experimentize in long 120m, thickness of pipe 12mm, internal diameter are the metallic conduit environment of 297mm, record electromagnetic signal and surpass 10m along pipeline horizontal direction propagation distance, the propagation distance of vertical pipe axis direction signal is greater than 4m.23HZ, the 0.7s that arrives for actual detected as Fig. 4 and Fig. 5 at interval electromagnetic signal and signal amplitude along the distribution of pipeline.
2) reception and registration of the inside and outside communications protocol of pipeline: mobile vehicle 2 adopts the hydraulically powered snake-shaped robot of leather cup mechanism in the pipe, has equipped supersonic detection device and communication system of the present invention.When Ultrasonic Detection arrives defect of pipeline, send order by very low frequency power electromagnetic pulse transmitter and microcontroller 3 thereof, produce communication instruction signal (find weld defect and find pipe leakage) as shown in Figure 6.
The present invention has realized the reliable communicating problem that pipeline under the metallic conduit environment is inside and outside, all has applicability preferably for the pipeline of different wall, internal diameter and laying length.Detect the active demand of getting rid of the danger based on the non-excavation of present pipework, and all drawbacks that mechanics of communication exists in underground/seabed metallic conduit environment, the present invention proposes based on the inside and outside mechanics of communication of the pipeline of very low frequency power electromagnetic pulse (Extreme low frequency-powerelectromagnetic pulse:ELF-PEP).The frequency range of very low frequency power electromagnetic pulse is 3-30kHz, and when propagating in metal, silt soil layer and briny environment, its electromagnetic signal decay factor is less.The contrast high frequency electromagnetic wave signal, its propagation distance in lossy medium increases substantially.
The mechanism of transmission of very low frequency power electromagnetic pulse signal is analyzed and the basis of a large amount of field experiments on, drawn to draw a conclusion:
1) in the low medium of conductances such as silt, soil layer, air, the decay of very low frequency power electromagnetic pulse signal energy is less, and propagation distance is subjected to frequency influence seldom, and decay factor β is expressed as:
Wherein, σ-conductivity, μ-magnetic permeability, ε-specific inductive capacity.
Power lead L
1The input end and the switch S that connect the first voltage transformation module 3-7
1An end, the output terminal of the first voltage transformation module 3-7 connects the first diode D
2Anode, the first diode D
2Negative electrode connect input end, first resistance R of the second voltage transformation module 3-8
1An end, the second diode D
3First input end, the first input end of D/A conversion 3-2 and the first input end of power amplifier 3-3 of negative electrode, single-chip microcomputer 3-1; The output terminal of the second voltage transformation module 3-8 connects the first input end of microcontroller 3-9; Second input end of microcontroller 3-9 connects first resistance R
1The other end, second resistance R
2An end and stabilivolt D
1Negative electrode; Second resistance R
2The other end and stabilivolt D
1Plus earth; The 3rd input end of microcontroller 3-9 connects CAN connection L
2First output terminal of microcontroller 3-9 connects switching tube S
2Base stage, switching tube S
2Grounded emitter, switching tube S
2Collector connect the output terminal of transmitting coil 3-4, first output terminal of single-chip microcomputer 3-1, first output terminal of D/A conversion 3-2 and first output terminal of power amplifier 3-3; Second output terminal of microcontroller 3-9 connects second input end of single-chip microcomputer 3-1, second output terminal of single-chip microcomputer 3-1 connects second input end of D/A conversion 3-2, second output terminal of D/A conversion 3-2 connects second input end of power amplifier 3-3, second output terminal of power amplifier 3-3 connects the input end of transmitting coil 3-4, and transmitting coil 3-4 is wrapped on the magnetic core 3-5; Relay S
2One end of coil is connected ground wire L
3On, relay S
3The other end of coil passes through switch S
1Be connected 24V power lead L
1On, ground wire L
3Connect the end of reserve battery 3-6 and the output terminal of battery charger 3-10, the other end of reserve battery 3-6 connects another output terminal and the relay S of battery charger 3-10
3An electric shock, relay S
3Another get an electric shock to connect second diode D
3Anode.Other composition is identical with embodiment one with connected mode.
The model of microcontroller 3-9 is ZLG-ARM7-2119; The model of single-chip microcomputer 3-1 is ATMEL89C4051; The model of D/A conversion 3-2 is TLC5615; Switching tube S
2Model be ULN2803A; Relay S
3Model be OMRON G66-2114P.Microcontroller 3-9 has voltage detecting, power supply control, three functions of CAN communication.By the first voltage transformation module 3-7 outside 24V power supply being converted to 15V, is voltage transitions 5V through the second voltage transformation module 3-8 once more, for microcontroller 3-9 operate as normal.Reserve battery 3-6 normal condition is 14-14.6V, by the first diode D2 and the second diode D3 make externally fed just often reserve battery 3-6 do not work.Be input to microcontroller 3-9 through the level that produces 3.3V after first resistance R 1 and second resistance R, 2 dividing potential drops, thereby realize voltage detecting to externally fed, if second input of microcontroller 3-9 becomes low level outside power down is described, carry out power supply by the first diode D2 and the second diode D3 and automatically switch.When battery electric quantity was not enough, with switch S 1 closure, then relay S3 disconnected powered battery, charger is inserted the 220V alternating current charge the battery.Microcontroller 3-9 mobile vehicle 2 central controllers in CAN connection L2 and pipe carry out communication, know the operation and the job information of mobile vehicle 2 in the whole pipe, by changing the break-make of switching tube S2, can control the duty of transmitter.By outputting a control signal to single-chip microcomputer 3-1, the amplitude and the frequency modulation (PFM) mode of electromagnetic signal that change is launched, the demand of realization different communication instructions of reception and registration outside pipe.Transmitter adopts 17Hz, 23Hz, three kinds of transmission frequencies of 29Hz in the pipe of the present invention, signal bandwidth ± 1HZ, and the power frequency that transmission line of electricity brought around the inhibition electrical equipment reached is disturbed.Signal amplitude adopts modulation system as shown in Figure 3, saves power consumption and improves the transient state emissive power.The single-chip microcomputer output signal is transferred to transmitting coil 3-4 after changing 3-2 and power amplifier 3-3 by D/A, produces electromagnetic pulse.Manage outer magnetic induction receiving antenna group 4 and be connected respectively to signal Processing and transmitting device 5, signal Processing and transmitting device 5 are transferred to computing machine.By communication instruction inside and outside the computer software parsing pipeline, the formulation of communications protocol is as shown in table 1.
The inside and outside communications protocol of table 1 pipeline
Annotate: 1 representative has signal, and 0 represents no signal; Signal interval is two times (extremely shown in Figure 6 as Fig. 3) between the signal envelope starting point
Embodiment three: present embodiment is described in conjunction with Fig. 2, present embodiment and embodiment two differences are that transmitting coil 3-4 twines for adopting distributed pair of circle, reduce the harmful effect that coupling capacitance is brought between coil, and transmitting coil 3-4 adds the alloy silk strengthens electromagnetic signal as magnetic core emissive porwer.Other composition is identical with embodiment two with connected mode.
Embodiment four: present embodiment is described in conjunction with Fig. 1, present embodiment and embodiment one difference are that magnetic induction receiving antenna group 4 is three magnetic induction receiving antennas, three output terminals of magnetic induction receiving antenna group 4 are connected to three input ends of signal Processing and transmitting device 5, and other composition is identical with embodiment one with connected mode.
Embodiment five: in conjunction with Fig. 1 present embodiment is described, present embodiment and embodiment four differences are that signal Processing and transmitting device 5 be made up of three wave filters and data collecting card; Three output terminals of magnetic induction receiving antenna group 4 are connected respectively in three wave filters separately on the bandpass filter of the high-gain of centre frequency, high quality factor, and the output signal of three wave filters is transferred in the computing machine respectively by three passages of data collecting card.Other composition is identical with embodiment four with connected mode.
Embodiment six: present embodiment is described in conjunction with Fig. 1, present embodiment and embodiment one difference are to have increased the outer mobile device 7 of pipe, magnetic induction receiving antenna group 4, signal Processing and transmitting device 5 and computing machine 6 are installed on the outer mobile device 7 of pipe, manage outer mobile device 7 and travel along the direction of motion of mobile vehicle 2 and carry out receiving and transmitting signal.Other composition is identical with embodiment one with connected mode.
Claims (3)
1, based on the piping inside and outside communication device of very low frequency power electromagnetic pulse, it comprises very low frequency power electromagnetic pulse transmitter and microcontroller (3), magnetic induction receiving antenna group (4), signal Processing and transmitting device (5) and computing machine (6); The transmitting terminal of very low frequency power electromagnetic pulse transmitter and microcontroller thereof (3) is launched the very low frequency power electromagnetic pulse signal, magnetic induction receiving antenna group (4) receives the very low frequency power electromagnetic pulse conversion of signals and is voltage signal, be transferred in signal Processing and the transmitting device (5), signal Processing and transmitting device (5) carry out filtering with voltage signal and amplify, extract the component of signal identical with transmitter frequency, and be transferred to computing machine (6) and carry out data analysis, resolve communication instruction; It is characterized in that very low frequency power electromagnetic pulse transmitter and microcontroller thereof (3) are by single-chip microcomputer (3-1), D/A conversion (3-2), power amplifier (3-3), transmitting coil (3-4), magnetic core (3-5), reserve battery (3-6), first voltage transformation module (3-7), second voltage transformation module (3-8), microcontroller (3-9), battery charger (3-10), switch S
1, switching tube S
2, relay S
3, stabilivolt D
1, the first diode D
2, the second diode D
3, first resistance R
1, second resistance R
2, 24V power lead L
1, CAN connection L
2, ground wire L
3Form; 24V power lead L
1The input end and the switch S that connect first voltage transformation module (3-7)
1An end, the output terminal of first voltage transformation module (3-7) connects the first diode D
2Anode, the first diode D
2Negative electrode connect input end, first resistance R of second voltage transformation module (3-8)
1An end, the second diode D
3First input end, the first input end of D/A conversion (3-2) and the first input end of power amplifier (3-3) of negative electrode, single-chip microcomputer (3-1); The output terminal of second voltage transformation module (3-8) connects the first input end of microcontroller (3-9); Second input end of microcontroller (3-9) connects first resistance R
1The other end, second resistance R
2An end and stabilivolt D
1Negative electrode; Second resistance R
2The other end and stabilivolt D
1Plus earth; The 3rd input end of microcontroller (3-9) connects CAN connection L
2First output terminal of microcontroller (3-9) connects switching tube S
2Base stage, switching tube S
2Grounded emitter, switching tube S
2Collector connect the output terminal of transmitting coil (3-4), first output terminal of single-chip microcomputer (3-1), first output terminal of D/A conversion (3-2) and first output terminal of power amplifier (3-3); Second output terminal of microcontroller (3-9) connects second input end of single-chip microcomputer (3-1), second output terminal of single-chip microcomputer (3-1) connects second input end of D/A conversion (3-2), second output terminal of D/A conversion (3-2) connects second input end of power amplifier (3-3), second output terminal of power amplifier (3-3) connects the input end of transmitting coil (3-4), and transmitting coil (3-4) is wrapped on the magnetic core (3-5); One end of relay S3 coil is connected ground wire L
3On, relay S
3The other end of coil passes through switch S
1Be connected 24V power lead L
1On, ground wire L
3Connect an end of reserve battery (3-6) and an output terminal of battery charger (3-10), the other end of reserve battery (3-6) connects another output terminal and the relay S of battery charger (3-10)
3An electric shock, relay S
3Another get an electric shock to connect second diode D
3Anode.
2, the piping inside and outside communication device based on very low frequency power electromagnetic pulse according to claim 1 is characterized in that transmitting coil (3-4) twines for adopting distributed pair of circle.
3, the piping inside and outside communication device based on very low frequency power electromagnetic pulse according to claim 1 is characterized in that transmitting coil (3-4) adds the alloy silk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810064022A CN100580728C (en) | 2008-02-22 | 2008-02-22 | Communication device inside and outside the pipeline based on very low frequency power electromagnetic pulse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810064022A CN100580728C (en) | 2008-02-22 | 2008-02-22 | Communication device inside and outside the pipeline based on very low frequency power electromagnetic pulse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101231782A CN101231782A (en) | 2008-07-30 |
| CN100580728C true CN100580728C (en) | 2010-01-13 |
Family
ID=39898221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810064022A Expired - Fee Related CN100580728C (en) | 2008-02-22 | 2008-02-22 | Communication device inside and outside the pipeline based on very low frequency power electromagnetic pulse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100580728C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509491B (en) * | 2011-10-17 | 2016-03-02 | 荣莘电子科技（上海）有限公司 | Subject two instruction examines the region detection system and method for utilization of area LFMC |
| CN102882562A (en) * | 2012-08-22 | 2013-01-16 | 西安交通大学 | Directional-magnetic-path-based high-signal-to-noise-ratio non-contact signal transmitting system |
| CN103441803B (en) * | 2013-09-10 | 2015-09-16 | 北京科技大学 | A kind of underground low frequency wireless communication system based on low-power small electric antenna |
| CN103470959B (en) * | 2013-09-16 | 2016-04-27 | 北京埃彼咨石化科技有限公司 | Based on pick-up unit in the oil and gas pipes intelligence of multimode integrated positioning |
| CN103727351B (en) * | 2013-12-10 | 2016-01-27 | 大连大科科技咨询有限公司 | Pipeline crawl trolley |
| CN109358636B (en) * | 2016-09-14 | 2021-12-28 | 江苏师范大学 | Unmanned aerial vehicle navigation system for positioning pipeline robot and navigation method thereof |
| CN107040936B (en) * | 2017-03-24 | 2020-12-18 | 承德路桥建设总公司 | Highway tunnel very low frequency ground communication-location integrated system |
| CN109413982A (en) * | 2018-12-11 | 2019-03-01 | 南京信息工程大学 | A kind of seawater electromagnetic shield |
| CN110369413A (en) * | 2019-08-01 | 2019-10-25 | 华电国际电力股份有限公司技术服务分公司 | A kind of ash conveying pipe cleaning plant |
| CN111162843A (en) * | 2019-09-30 | 2020-05-15 | 上海机电工程研究所 | Signal measurement method and system based on strong electromagnetic pulse environment |
| CN114610079B (en) * | 2022-03-09 | 2022-10-18 | 国机传感科技有限公司 | Two-dimensional control method and system based on extremely-low-frequency magnetic sensing |
| CN114593308B (en) * | 2022-03-15 | 2023-11-24 | 江苏大发建设工程有限公司 | Robot chassis for detecting oil smoke pipeline |
| CN114664071B (en) * | 2022-03-18 | 2023-03-28 | 青岛理工大学 | Underwater vehicle remote control system and method based on magnetic sensor |
-
2008
- 2008-02-22 CN CN200810064022A patent/CN100580728C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| 基于低频电磁波的管道机器人定位技术. 孙东昌，李军远，张晓华.控制工程，第14卷第增刊期. 2007 |
| 基于低频电磁波的管道机器人定位技术. 孙东昌，李军远，张晓华.控制工程，第14卷第增刊期. 2007 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101231782A (en) | 2008-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100580728C (en) | Communication device inside and outside the pipeline based on very low frequency power electromagnetic pulse | |
| CN103441803B (en) | A kind of underground low frequency wireless communication system based on low-power small electric antenna | |
| CN110086506B (en) | Watertight connector | |
| US20130043887A1 (en) | Communication method for monitoring pipelines | |
| CN102536204B (en) | Method for increasing transmitting efficiency of electromagnetic wave wireless measurement-while-drilling system by aid of multiple insulation short pieces | |
| CN102679165A (en) | Device and method for positioning inner detector in submarine pipeline | |
| CN101672429A (en) | Petroleum pipeline detecting system | |
| CN109756248B (en) | Magnetic coupling energy-carrying reverse communication method for underground measurement while drilling | |
| CN106051471B (en) | A kind of movable robot in pipe and its non-destructive testing device | |
| CN203640727U (en) | Transient electromagnetic well-logging instrument | |
| CN102251769A (en) | Electromagnetic wave signal transmission method and system of measurement while drilling | |
| CN202018515U (en) | Novel pipeline-cleaner tracking and positioning instrument | |
| CN110673200A (en) | Intelligent pipeline positioning device and method based on coded signals | |
| CN103624040A (en) | Pipe cleaner provided with giant-magnetoresistance sensor | |
| CN203036259U (en) | Blocking detecting and positioning device of oil pipeline | |
| CN105158807A (en) | Deep buried pipeline accuracy detection device and detection method | |
| CN209748555U (en) | Watertight connector | |
| WO2022166457A1 (en) | Borehole transient electromagnetic radial long-range detection and observation system and method | |
| Ahmed et al. | Oil and gas pipeline monitoring through magneto-coupled wireless sensor network | |
| CN211263679U (en) | An automatic monitoring device for pipeline insulation joints | |
| CN210201838U (en) | Communication device based on metal medium spare | |
| CN103984030A (en) | PCM locating method for oil gas station yard buried pipeline | |
| CN203658313U (en) | High-power ultrasonic flaw detection all-in-one machine | |
| CN108417370B (en) | Charging system and charging method for automatic force detection robot of gas pipeline | |
| CN201232544Y (en) | Electric current field receiving antenna apparatus for measurement while drilling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100113 Termination date: 20120222 |