CN108259049B - The buried and underwater metallic conduit detectable signal emitter and its applying method of satellite synchronization - Google Patents
The buried and underwater metallic conduit detectable signal emitter and its applying method of satellite synchronization Download PDFInfo
- Publication number
- CN108259049B CN108259049B CN201810037958.6A CN201810037958A CN108259049B CN 108259049 B CN108259049 B CN 108259049B CN 201810037958 A CN201810037958 A CN 201810037958A CN 108259049 B CN108259049 B CN 108259049B
- Authority
- CN
- China
- Prior art keywords
- signal
- pipeline
- detectable signal
- solid
- satellite
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 25
- 238000001514 detection method Methods 0.000 claims abstract description 30
- 238000012360 testing method Methods 0.000 claims abstract description 8
- 230000001360 synchronised effect Effects 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 230000002787 reinforcement Effects 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 210000001367 artery Anatomy 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The buried and underwater metallic conduit detectable signal emitter and detection method of satellite synchronization solve the problems, such as that great burying, long span are buried and pass through metallic conduit detectable signal under water and require because decaying causes signal strength and transmission range not to be able to satisfy detection.The emitter includes 4 solid-state relays in parallel again of connecting two-by-two of signal transmitter, control circuit and its control, and the intermediate node of two solid-state relays, which is drawn, is used as two signal output ends, and a ground connection, one connects pipe under test.Output detectable signal stringent synchronization in timing is realized by receiving GPS second pulse signal, two emitters are made to can be realized fully synchronized superposition to the detection electric current that pipeline applies, reach the mutual reinforcement in transmission process of the detection electric current on pipeline, to increase the intensity of detectable signal, increase the effective detecting depth and distance to pipeline, to realize the detection purpose to great burying, long span crossing pipeline.
Description
Technical field
Satellite synchronization direct impulse sender unit of the invention, be related to great burying underground metal pipes route exploration and
The superposition of buried depth measuring signal belongs to the applied technical field of buried and underwater metallic conduit detection.
Background technique
By being one special locating for the underwater crossing pipeline such as the pipeline and rivers of Directional Drilling for Pipeline Crossing, lake
Long span, great burying environment needs to apply to pipeline to be detected sufficiently strong during detecting its routing and measurement buried depth
The probe current signal of degree.If cannot accurately to buried and underwater crossing pipeline implement position, corrosion and protection situation etc. its
Its Corrosion monitoring just can not effectively be implemented.
Generally conventional land detectable signal applying method is:
1. earth polar method: setting up signal transmitter in pipeline one end, one end output line of signal transmitter is connect with pipeline, separately
One output end is connect with earthing pole.The current signal of transmitting is set to form conduction by earthing pole, greatly with pipeline corrosion protection layer surface
Loop transfer.The insulation of the conductivity degree, pipeline external anti-corrosion layer of the transmission range and quality and soil environment of probe current signal
The resistance in the transmission circuit that the factors such as performance and integrated degree determine is related.When soil conductivity is poor, erosion resistant coating insulation performance is poor,
When erosion resistant coating integrity degree is low, the signal code of pipeline can be applied to regard to small, transmission range is with regard to short；Conversely, signal transmission distance
It is then remote.
2. circuit connection method: for avoid environment influence, improve detectable signal current strength, pipe ends directly with transmitting
Machine is connected, and pipeline and transmitter itself output line is made to form current supply circuit.If erosion resistant coating is appropriate, signal is lost seldom, signal
Intensity and transmission range can all increase substantially.
For the underground of directional drilling crossing, submarine pipeline, earth polar method limited transmission distance, circuit connection method environment item
Part is limited；It is the effective ways of both replies limitation by the addition method for respectively applying signal at detection section both ends.
Summary of the invention
It is buried and under water pass through metallic conduit detectable signal because decaying causes object of the present invention is to solve great burying, long span
Signal strength and transmission range are not able to satisfy the problem of detection requires, and provide a kind of buried and underwater metallic conduit of satellite synchronization
Detectable signal emitter and applying method.Present invention is mainly applied to great burying, long span is buried and passes through metal tube under water
The route exploration in road, buried depth measurement.
Technical solution of the present invention
1, the buried and underwater metallic conduit detectable signal emitter of satellite synchronization
Emitter includes signal modulation unit, control circuit and satellite pulse per second (PPS) receiving unit.In signal modulation list
Two solid-state relay branches in parallel between two current signal output ends in member, each each series connection in solid-state relay branch road
Two solid-state relays amount to 4 solid-state relays, and the intermediate node of two solid-state relay branches is drawn as two letters
Number output end, a ground connection, one connects pipe under test, the satellite second arteries and veins that 4 solid-state relays are connected by control circuit according to it
The synchronization signal for rushing receiving unit acquisition carries out on-off control according to the timing of setting, to realize that buried and submarine pipeline is visited
Survey the modulation and transmitting of signal.
The concrete methods of realizing of emitter is:
1) second pulse signal that satellite broadcasting is received by satellite pulse per second (PPS) receiving unit, can be to the onboard clock of transmitter
Accurate calibration is carried out, the problem that the current signal for avoiding work at a distance two transmitters from emitting cannot synchronize for a long time.It defends
Two synchronous sender units of star can send the detectable signal of stringent synchronization for a long time, in synchronization to same target
Synchronous superposition may be implemented in the signal strength of application.
2) using microprocessor as the control circuit of core, by controlling the orderly on-off of 4 solid-state relays, by direct current
The electric current in source is modulated into the DC pulse signal of setpoint frequency, is applied on pipeline to be detected, realizes great burying, long leap
The route exploration and buried depth of pipeline measure.
3) the DC pulse current signal with positive-negative half-cycle that can be exported simultaneously can eliminate detectable signal to pipeline yin
The influence of pole protection polarization potential.
2, the applying method of detectable signal is carried out using above-mentioned detectable signal emitter, steps are as follows:
1) an above-described detectable signal emitter is respectively set up with earth polar method at the both ends of pipeline to be detected, detected
One signal output end of sender unit is grounded, another signal output end is connected to one end of pipe under test, two hairs
The signal output end positive and negative anodes of injection device are reversely connected；
2) two detectable signal emitters pass through the pulse per second (PPS) that satellite pulse per second (PPS) receiving unit receives satellite broadcasting respectively
Signal avoids work at a distance two emitter transmittings so that the onboard clock to emitter carries out accurate calibration
The problem that current signal cannot synchronize for a long time enables two sender units of satellite synchronization to send for a long time stringent same
The detectable signal of step；
3) in satellite synchronous signal precision up to 10-6It is detected when the second, to guarantee two emitters in synchronization
The current signal applied to same target may be implemented strictly to synchronize superposition, effectively increase the intensity and range of detectable signal,
To realize route exploration and the depth measurement of great burying crossing pipeline.
Detection principle of the present invention and calculation basis: being based on satellite second pulse signal, using microprocessor as the control of core electricity
The output electric current of DC power supply is modulated into the direct current of setpoint frequency by road, the orderly on-off by controlling 4 solid-state relays
Pulse signal, guarantees accurately consistent in same time signal output amplitude, direction, passes through transmitter erection mode and realizes common make
Used time is superimposed forward or backwards.
Transmitter frequency and a wavelength time relationship:
F-frequency, unit Hz；
The wavelength time of a complete cycle of t-, μ s.
When in order to improve receiving unit to the inductive effects of signal, and guarantee solid-state relay triggering and the response disconnected
Between, certain interval delay is introduced between the positive and negative half-wave of signal, the duration of delay is reached most with the reception characteristic of detection unit
It is excellent to determine.
The advantages of the present invention:
The present invention be applied to great burying it is buried and under water pass through metallic conduit positioning and corrosion and protection detection engineering.It visits
The technical parameter of amount includes: routing and the buried depth of pipeline.In great burying, when long span is buried and underwater crossing pipeline detection, such as
Fruit earth polar method, which applies signal, cannot effectively cover the half of detected duct length, and applying signal respectively at both ends can not complete
Whole pipeline section Detection tasks of detected pipeline.Using the method for the present invention in the both ends test pile (or end of being unearthed) for being detected pipeline
A transmitter is respectively set up, while signal is applied to detected pipeline, valid analysing range is individually to set up one at both ends originally
1.5~2.0 times of the sum of platform transmitter valid analysing range.
It is buried and under water pass through metallic conduit signal strength detection that great burying can be effectively improved using the present invention, change with
Past signal applies mode, by ground receiver or the detection device being mounted on submarine pipeline detection robot ROV, realizes
Route exploration and buried depth measurement to underwater crossing pipeline.
The present invention integrates the technologies such as signal modulating method, computation model, applying mode.In technical method and composition
Signal applying mode is simple with device structure, be easy to make, easy to use, detectable signal is stackable, effective detecting distance adds
The advantages that long.In pipeline one end earth polar method plus signal, it is whole that signal quality is unsatisfactory for detection pipeline, but effectively detection away from
When from be greater than pipeline section overall length 1/4~1/3, emitter of the invention can be used to pipeline and apply detectable signal.
Detailed description of the invention
Fig. 1 is emitter control structure figure；
Fig. 2 is the control principle drawing of emitter；
Fig. 3 is modulation afterpulse signal timing diagram；
Fig. 4 is ROV submarine pipeline detection schematic diagram；
Fig. 5 is 640Hz alternating impulse signal timing diagram.
In figure, 1 indicates emitter, and 2 indicate satellite antenna, and 3 indicate crossing pipeline, and 4 indicate underwater detection equipment, 5 tables
Show test pile, 6 indicate detection operations lash ship.
Fig. 2 is the realization principle figure of Fig. 1, and the connection type of a solid-state relay, other 3 connection sides are only drawn in figure
Formula is identical.
[specific embodiment]
1, hardware realization:
The buried and underwater metallic conduit detectable signal emitter of satellite synchronization, including signal modulation unit, control electricity
Road and satellite pulse per second (PPS) receiving unit.Consolidate for two in parallel between two current signal output ends in signal modulation unit
State relay branch, two solid-state relays of each series connection in each solid-state relay branch road, amounts to 4 solid-state relays, by two
The intermediate node of a solid-state relay branch, which is drawn, is used as two signal output ends, a ground connection, and one connects pipe under test, and 4
Solid-state relay by control circuit according to its connection satellite pulse per second (PPS) receiving unit obtain synchronization signal, according to setting when
Sequence carries out on-off control, to realize buried and submarine pipeline detectable signal modulation and transmitting.Wherein,
1) power supply.Using external 12V~24V storage battery power supply, can concatenate, up to 96V.
2) modulation of alternating impulse electric current signal.Transmitter circuitry control principle drawing (such as Fig. 2), the second arteries and veins in control circuit
It rushes receiving unit and second pulse signal, the internal clocking of timing alignment MCU is received by satellite antenna, MCU passes through solid-state relay
Control circuit is by setting timing on-off, by the D.C.current modulation of input at the pulse signal (such as Fig. 3) of alternation.2, detection method
It realizes:
Firstly, normally applying signal, detectable signal quality, if signal covers to pipeline in crossing pipeline one end earth polar method
Lid quality be not able to satisfy detection pipe road whole, but effectively detecting distance be greater than target area interior conduit overall length 1/4~1/3 when,
Emitter of the invention can be used, signal is applied using earth polar method.
Second step respectively sets up a detectable signal emitter, two transmitting dresses with earth polar method in pipe ends to be detected
The signal output end positive and negative anodes reversal connection set, GPS antenna is connected on emitter, enabling signal emitter is selected same
Frequency searches star success to pulse per second (PPS) receiving unit, and emitter can export the detectable signal of stringent synchronization to pipeline, make two
The signal of end transmitting realizes superposition.
Third step, land detection along pipeline search, checking signal quality and are implemented to detect.
The detection method of underwater through section is identical: first determine that two, pipeline can apply the position of signaling point on the bank on both sides,
Using the pipeline section of point-to-point transmission as target area, ROV is launched to target area and carries out signal tracing and detection, completed whole section and pass through
The detection (such as Fig. 4) of pipeline.
[specific implementation case]
1. timing Design.640Hz is used for great burying detectable signal frequency.
Timing: detectable signal frequency f=640Hz is calculated, is=1562.5 μ s the time required to a complete signal, when half-wave
Between 0.5t=781 μ s.Relay triggers 0.1 μ s of response time, disconnects 0.9 μ s of response time.Control sequential is in addition to vacating solid-state
Outside the response time of relay, consider that receiving unit induction of signal effect is optimal, selects 480 μ s logical, 301.25 μ s are disconnected.
Specific control sequential: positive half-wave connects 480 μ s → 301.25 μ s of disconnection → negative half-wave and connects 480 μ s → 301 μ of disconnection
S completes a cycle.(Fig. 5)
2. component selects.MCU controls chip STM32F103CB, GPS module and antenna, optocoupler-TLP187 (transistor
Export optocoupler), N-MOSFET-SKM180A020 (MOSFET module), isolated power supply module-DCP021212.Power supply selection by
The 48V that 12V is composed in series is battery-powered.
3. controlling program:
4. implementation result
The emitter of satellite synchronization pipeline detection is successfully realized using parameter as above.The device is wide by about 700
The river two sides of rice respectively set up an emitter, the signal of two emitters with earth polar method at the both ends of pipeline to be detected respectively
Output positive and negative charge reversal connection.Using the external storage battery power supply of 12V, actual transmission as a result, 2.34 amperes of one emission current,
Another transmitting signal code is 1.91 amperes, and in river middle position, measuring synchronization signal electric current on pipeline is 1.77 amperes,
Realize the coordinate detection and buried depth measurement of 17.5 meters of deep pipelines.
Claims (1)
1. the application that a kind of buried and underwater metallic conduit detectable signal emitter using satellite synchronization carries out detectable signal
Method, described device include signal modulation unit, control circuit and satellite pulse per second (PPS) receiving unit；In signal modulation unit
Two solid-state relay branches in parallel between two interior current signal output ends, each each series connection two in solid-state relay branch road
A solid-state relay amounts to 4 solid-state relays, and the intermediate node of two solid-state relay branches is drawn and is used as two signals
Output end, a ground connection, one connects pipe under test, and 4 solid-state relays are connect by control circuit by the satellite pulse per second (PPS) connected
The synchronization signal that unit obtains is received, on-off control is carried out according to the timing of setting；It is characterized in that, this method includes following step
It is rapid:
1st, a detectable signal emitter as described above, detection letter are respectively set up with earth polar method at the both ends of pipeline to be detected
The signal output end ground connection of number emitter, another signal output end are connected to one end of pipe under test, two transmittings
The signal output end positive and negative anodes of device are reversely connected；
2nd, two detectable signal emitter passes through the pulse per second (PPS) letter that satellite pulse per second (PPS) receiving unit receives satellite broadcasting respectively
Number, so that the onboard clock to emitter carries out accurate calibration, the electricity for avoiding work at a distance two emitters from emitting
The problem that stream signal cannot synchronize for a long time, enables two sender units of satellite synchronization to send stringent synchronization for a long time
Detectable signal；
3rd, in satellite synchronous signal precision up to 10-6It is detected when the second, to guarantee two emitters in synchronization pair
The current signal that same target applies may be implemented strictly to synchronize superposition, effectively increase the intensity and range of detectable signal, from
And realize route exploration and the depth measurement of great burying crossing pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810037958.6A CN108259049B (en) | 2018-01-16 | 2018-01-16 | The buried and underwater metallic conduit detectable signal emitter and its applying method of satellite synchronization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810037958.6A CN108259049B (en) | 2018-01-16 | 2018-01-16 | The buried and underwater metallic conduit detectable signal emitter and its applying method of satellite synchronization |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108259049A CN108259049A (en) | 2018-07-06 |
| CN108259049B true CN108259049B (en) | 2019-07-05 |
Family
ID=62741117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810037958.6A Active CN108259049B (en) | 2018-01-16 | 2018-01-16 | The buried and underwater metallic conduit detectable signal emitter and its applying method of satellite synchronization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108259049B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414461A (en) * | 2021-12-17 | 2022-04-29 | 中石化管道技术服务有限公司 | Protective potential satellite synchronous measurement device with positioning current pipeline and method |
| CN115166838B (en) * | 2022-09-07 | 2022-12-16 | 浙江图维科技股份有限公司 | Method and system for positioning pipeline |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100337126C (en) * | 2005-05-25 | 2007-09-12 | 淄博威特电气有限公司 | Method and apparatus for judging between right and wrong tracking and discriminating pipeline in metal pipeline detection |
| US8219214B1 (en) * | 2008-03-18 | 2012-07-10 | Mimlitz James E | Supervisory control and data acquisition protocol converter |
| CN101571234B (en) * | 2009-06-16 | 2012-05-30 | 北京埃德尔黛威新技术有限公司 | Liquid pressure conduit leak detection device |
| JP6448443B2 (en) * | 2015-03-31 | 2019-01-09 | 大阪瓦斯株式会社 | Method and apparatus for detecting buried metal using synchronous detection method |
| CN104865606B (en) * | 2015-06-05 | 2017-06-16 | 中国海洋大学 | High-effect high current Electro-magnetic Launcher System and method |
| CN105353414B (en) * | 2015-10-22 | 2018-07-03 | 中国科学技术大学 | A kind of pipeline detection method and system |
-
2018
- 2018-01-16 CN CN201810037958.6A patent/CN108259049B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108259049A (en) | 2018-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2007202514B2 (en) | Electromagnetic surveying | |
| CN108259049B (en) | The buried and underwater metallic conduit detectable signal emitter and its applying method of satellite synchronization | |
| CN105705956A (en) | A method of single-ended fault location in HVDC transmission lines | |
| DE2962708D1 (en) | Apparatus and method for locating sheath faults in underground power supply cables | |
| CN110927802B (en) | Submarine cable fault accurate positioning method based on magnetic vector data and positioner | |
| CN105242321A (en) | Sea submersible horizontal orthogonal emission system and application method thereof | |
| CN102679165A (en) | Device and method for positioning inner detector in submarine pipeline | |
| CN108415055A (en) | Mobile object telltale mark device in a kind of fluid pipeline | |
| CN109814069A (en) | A kind of underwater mobile node passive location method and its system based on single localizer beacon | |
| CN105203993A (en) | Underground-pipeline three-point position indicator and working method thereof | |
| JPS5829875B2 (en) | Cable search method | |
| CN104122594A (en) | Multi-parameter extraction data processing method of time domain induced polarization full-waveform sampling | |
| NL2028770B1 (en) | 5g+cmft—r time domain electromagnetic field exploration system and method | |
| CN108572396A (en) | A kind of underground gas pipeline detection method | |
| CN100374818C (en) | Measuring method and device for built-in length of metal pipeline | |
| CN109901226B (en) | Controllable source tensor geoelectromagnetic system and control calculation method thereof | |
| CN205384379U (en) | Synchronous array electricity method appearance system | |
| CN216741349U (en) | Horizontal directional drill butt joint system and underground construction assembly thereof | |
| CN105301555A (en) | Underground pipeline tracing instrument and operating method thereof | |
| CN108957029A (en) | A kind of float technique survey river flow velocity method of LoRa wireless location | |
| CN110703342B (en) | Full-coverage anti-interference artificial source electromagnetic detection method | |
| CN103969688A (en) | Pseudo-random signal electrical method reconnaissance method and device | |
| CN102540259A (en) | High-density electrical exploration transmitter | |
| CN204855828U (en) | Survey device is sought in cable route | |
| CN207976587U (en) | Mobile object telltale mark device in a kind of fluid pipeline |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: Building 8, No. 18 Haitai South Road, Xiqing District, Tianjin, 300384 Patentee after: Tianjin Jiaxin Technology Co.,Ltd. Country or region after: China Address before: Building 8, No. 18 Haitai South Road, Xiqing District, Tianjin, 300384 Patentee before: TIANJIN GENIUS TECHNOLOGY & ENGINEERING Co. Country or region before: China |
|
| CP03 | Change of name, title or address |