CN103793733A - Pipeline identification system based on RFID - Google Patents
Pipeline identification system based on RFID Download PDFInfo
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- CN103793733A CN103793733A CN201410065753.0A CN201410065753A CN103793733A CN 103793733 A CN103793733 A CN 103793733A CN 201410065753 A CN201410065753 A CN 201410065753A CN 103793733 A CN103793733 A CN 103793733A
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Abstract
A pipeline identification system based on RFID comprises a steel-plastic composite winding pipe, an electronic marker, a remote detecting, reading and writing device, an underground pipeline data processing system and grounding conductors attached to an outer side pipe body of the winding pipe. The winding pipe and the electronic marker are buried under the ground, the remote detecting, reading and writing device is communicated with the electronic marker to read information of the electronic marker and is communicated with the underground pipeline data processing system to transmit the read information to the underground pipeline data processing system. The electronic marker comprises a radio frequency chip and a passive LC resonance circuit connected with the radio frequency chip in a wired mode or a wireless mode, the winding pipe comprises metal bands winding the outer side of the plastic pipe wall of the winding pipe, and a plastic protecting layer covers the outer sides of the metal bands. The grounding conductors are insulated with the metal bands of the winding pipe and are electrically connected with a grounding end of the passive LC resonance circuit, and the metal bands are electrically connected with an electrode of a resonance capacitor of the passive LC resonance circuit. The pipeline identification system based on the RFID overcomes the defect that the burying path for the steel-plastic composite winding pipe is difficult to detect due to the fact that an existing electronic marker is shallow in identifiable burying depth. The pipeline identification system based on the RFID is simple in structure, reliable in performance and easy to implement.
Description
Technical field
The present invention relates to a kind of system for underground steel plastic composite wound pipe pipeline path is identified.
Background technology
In city planting ductwork, carry out daily servicing and the breakdown maintenance work that is absolutely necessary to being embedded in underground steel plastic composite wound pipe.To the location of underground steel plastic composite wound pipe, classic method is to utilize the remarkable marker that is arranged on ground to contrast to look for pipeline path with drawing reciprocal reference thing (point pipeline).Above-mentioned point pipeline comprises the mark or the buried conductor that basset, also comprise various spherical (or dish) electron marker, because city planting ductwork is buried underground darker conventionally, in the time laying city planting ductwork pipeline, conventionally be embedded in overhead more shallow detectable position, pipeline top using electron marker as point pipeline, to adopt locating device to survey this concentrator marker to obtain position and other information of this pipeline.
But; the factors such as the urban renewal that brings due to urban development construction, urban road construction, town house construction; usually can cause and bury the more shallow change of electron marker initial position or electron marker damage, loss etc. underground, the Detection location in underground steel plastic composite wound pipe pipeline path is had a strong impact on.
Therefore, find a kind of electron marker that can buried identification, solve the factors such as existing urban renewal and cause the problem of pipeline Path Recognition difficulty to become the task of top priority.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of pipeline recognition system based on RFID is provided, and overcomes the factors such as urban renewal and cause the problem of underground utilities Path Recognition difficulty.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of pipeline recognition system based on RFID, comprise steel plastic composite wound pipe, electron marker, remote probe and read-write equipment and underground pipeline data handling system; This steel plastic composite wound pipe and electron marker are embedded in underground, and this remote probe is communicated by letter with this electron marker on ground and read the information of this electron marker and communicate by letter the electron marker information reading is sent to this underground pipeline data handling system with this underground pipeline data handling system with read-write equipment; Described electron marker comprise radio frequency chip and with the wired or wireless Passive LC resonant circuit being connected of this chip, described steel plastic composite wound pipe comprises the metal tape that is spirally wound on its plastic cement tube wall outside, this metal tape outer side covers plastic cement protective seam;
It is characterized in that, this pipeline recognition system also comprises and is attached to the earth conductor on body outside described steel plastic composite wound pipe, this earth conductor is with the metal tape mutually insulated of described steel plastic composite wound pipe, be electrically connected with the earth terminal of described Passive LC resonant circuit, and this steel plastic composite wound pipe metal tape is electrically connected with an electrode of described Passive LC resonance electric capacity.
In the pipeline recognition system based on RFID of the present invention, the metal tape of described steel plastic composite wound pipe is vertically spirally wound on this steel plastic composite wound pipe plastic cement tube wall outside.
In the pipeline recognition system based on RFID of the present invention, the metal tape xsect of described steel plastic composite wound pipe comprises the crest that two hypotenuses form and is arranged on this two hypotenuses downside and the smooth short pin coordinating outside this steel plastic composite wound pipe plastic cement tube wall.
In the pipeline recognition system based on RFID of the present invention, comprise insulcrete, the axial notch adaptation between this insulcrete and the metal tape of described steel plastic composite wound pipe is also fixed on this steel plastic composite wound pipe outside by described earth conductor.
In the pipeline recognition system based on RFID of the present invention, described earth conductor is positioned at the cylindrical region that the maximum outer rim of this steel plastic composite wound pipe metal tape forms after being attached to outside described steel plastic composite wound pipe on body.
In the pipeline recognition system based on RFID of the present invention, it is characterized in that, the metal tape of described earth conductor and described steel plastic composite wound pipe is achieved in that the conductor short column on the metal tape that comprises the concentric cable of tape cable joint and be fixedly connected electrically in described steel plastic composite wound pipe with being electrically connected of described Passive LC resonant circuit, this cable splice comprises the end pieces and the compressing member that are mutually threaded, this end pieces is insulating part, this compressing member comprises the metal nuts being threaded with this end pieces and coordinates the metal compaction cover that compresses concentric cable with this metal nuts, the inner hole sleeve of this end pieces on this conductor short column, outside is fixedly connected with the plastic cement protective seam of described steel plastic composite wound pipe metal tape, described earth conductor comprises allows that this borehole jack of Kong Bingjing that described concentric cable passes is on the end pieces of described cable splice, the metal compaction cover inner side of described cable splice compressing member is electrically connected with the outer conductor of this concentric cable, the metal nuts of compressing member and the end pieces of described cable splice are threaded is fixed on described earth conductor on the plastic cement protective seam of described steel plastic composite wound pipe metal tape, and the inner wire of this concentric cable is electrically connected with described conductor short column, this inner conductor is electrically connected with an electrode of described Passive LC resonance electric capacity, and this coaxial cable outer conductor is electrically connected with described Passive LC resonant circuit earth terminal.
In the pipeline recognition system based on RFID of the present invention, described conductor short column comprises the shrinkage pool that is arranged on its end, this shrinkage pool and described inner conductor adaptation, and the interior electrical connection of shrinkage pool that this conductor short column is inserted in this inner conductor end coordinates.
In the pipeline recognition system based on RFID of the present invention, described electron marker is disposed on outside described steel plastic composite wound pipe on body, and spacing distance is more than or equal to 5 meters, is less than or equal to 10 meters.
Implement the pipeline recognition system based on RFID of the present invention, compared with the prior art, its beneficial effect is:
1, owing to utilizing the spiral metal band of steel plastic composite wound pipe as the antenna of electron marker, greatly increase the depth of burying that electron marker can be identified by ground location, can meet electron marker is attached to installation on steel plastic composite wound pipe, guarantees the requirement identified by uphole equipment reliable detection of electron marker, overcome existing electron marker and can identify shallow the brought steel plastic composite wound pipe path of burying underground of the depth of burying and survey difficult defect;
2, the ingenious steel plastic composite wound pipe spiral metal band that utilizes is as electron marker antenna, simple in structure, dependable performance, easy to implement.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that the present invention is based on the pipeline recognition system of RFID.
Fig. 2 is the front view of existing a kind of steel plastic composite wound pipe.
Fig. 3 is the A portion enlarged drawing in Fig. 2.
Fig. 4 is the schematic diagram that the present invention is based on electron marker in the pipeline recognition system of RFID.
Fig. 5 is the medium-long range detection of pipeline recognition system and read-write equipment and the underground pipeline data handling system schematic diagram that the present invention is based on RFID.
Fig. 6 is the antenna attachment structure stereographic map that the present invention is based on tube metal stiffening rib and electron marker in the pipeline recognition system of RFID.
Fig. 7 is the antenna attachment structure front view of tube metal stiffening rib and electron marker in the pipeline recognition system of invention based on RFID.
Fig. 8 is B portion enlarged drawing in Fig. 7.
Fig. 9 is I portion enlarged drawing in Fig. 8.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Fig. 1 to Fig. 3, Fig. 7, the pipeline recognition system based on RFID of the present invention comprises steel plastic composite wound pipe 1, electron marker 2, remote probe and read-write equipment 3, underground pipeline data handling system 4 and is attached to the earth conductor 13 on steel plastic composite wound pipe 1 outside body.
Steel plastic composite wound pipe 1 generally includes full plastic core pipe and is spirally wound on the stiffening rib of core tube wall, comprises metal reinforcements in stiffening rib.The domestic industry standard of steel plastic composite wound pipe has: QB/T2783-2006 " buried steel is moulded composite wound drain pipe ", CJ/T225-2011 " buried for draining steel band enhanced polyethylene (PE) helical bellows ", CJ/T329-2010 " buried double-flat-wall steel-plastic composite winding drainpipe ".The domestic industry standard that adopts steel-plastic coextrusion to go out complex technique production steel plastic composite wound pipe has: CJ/T270-2007 " polyethylene plastic steel wound drain pipe ".
Steel plastic composite wound pipe 1 comprises the metal tape 10 that is spirally wound on its plastic cement tube wall outside, and metal tape 10 outer side covers plastic cement protective seams 11, to prevent that metal tape is corroded.As shown in Figure 2, in the present embodiment, the metal tape 10 of steel plastic composite wound pipe is vertically spirally wound on the plastic cement tube wall outside of steel plastic composite wound pipe 1.In other embodiments, steel plastic composite wound pipe can arrange its metal tape 10 as required, and a spiral winding metal tape can be set, and many spiral winding metal tapes also can be set.For example, metal take-up strap 10 can be set in the following manner: the xsect of the metal tape 10 of steel plastic composite wound pipe comprises the crest that two hypotenuses form and is arranged on this two hypotenuses downside and the smooth short pin coordinating outside this steel plastic composite wound pipe plastic cement tube wall.
Steel plastic composite wound pipe 1 and electron marker 2 are embedded in underground, and remote probe is communicated by letter with electron marker 2 on ground and read the information of this electron marker and communicate by letter the electron marker information reading is sent to this underground pipeline data handling system 4 with this underground pipeline data handling system 4 with read-write equipment 3.
As shown in Figure 4, electron marker 2 comprise radio frequency chip and with the wired or wireless Passive LC resonant circuit being connected of this chip.Preferably Passive LC resonant circuit connects radio frequency chip by radio frequency interface.
Radio frequency chip and Passive LC resonant circuit can adopt existing chip and circuit, and for example, radio frequency chip can adopt and comprise that logic control element, storage unit and radio frequency interface, radio frequency interface comprise the existing chip of modulation /demodulation module and Voltage Regulator Module.The resonant capacitance of Passive LC resonant circuit should adopt the electric capacity matching with the metal tape 10 of steel plastic composite wound pipe.
Passive LC resonant circuit is surveyed the radio frequency electromagnetic signal sending with read-write equipment 3 by receiving remote, can be translated into the required electric energy of the normal work of radio frequency chip.
The modulation /demodulation module of radio frequency chip is for carrying out the modulation and demodulation of radiofrequency signal; Voltage Regulator Module, carry out rectification and output dc voltage for the ac voltage signal that described Passive LC resonant circuit coupling is formed, and start store electrical energy to be described radio frequency chip and sensor described later power supply, when the electric flux of storage is when enough inner radio frequency chip is worked, radio frequency chip starts to launch its inner ID code and underground pipeline information corresponding with ID code by Passive LC resonant circuit;
The input and output signal that logic control element decoding obtains from radio frequency interface; By radio frequency interface, radiofrequency signal is carried out to modulation and demodulation, and according to requiring to carry out data communication with remote probe and read-write equipment 3, at least identity identification information can be returned to remote probe and read-write equipment 3.
The information of cell stores at least comprises the unique ID identity identification information in the whole world of this radio frequency chip, can set up accordingly the historical archives information of this drainage pipeline in data handling system.Storage unit also can store the important information of this pipeline, for example, in the time that pipeline dispatches from the factory, write the pipeline feature information such as the kind, specification, material, antenna optimal parameter of date of manufacture, manufacturer, the pipeline of pipeline, in pipeline construction process, again write the pipeline maintenance information such as unit in charge of construction, property right unit, supervisor, pipe number, purposes and buried depth, GPS geographic coordinate, the pipeline rout of pipeline, the azimuth information of adjacent pipe fitting.
The power that miniature radio-frequency chip expends is very little, is combined the operating distance that can reach larger with the distinctive large antenna of steel plastic composite wound pipe, is applicable to the underground remote identification in steel plastic composite wound pipe road.
In another embodiment of electron marker, described radio frequency chip comprises external digital interface, for the exchanges data between sensor and described radio frequency chip.External digital interface is internal integrated circuit I
2c meets, or serial peripheral equipment interface SPI.Described sensor is the low-power consumption sensor with digital interface, can be one or more in temperature sensor, humidity sensor, pressure transducer or gas sensor.The probe of described sensor connects the relevant position of drainage pipeline, and be coupled with the radiofrequency signal of described radio frequency chip, for gathering the status information of drainage pipeline, can monitor the daily servicings such as the harmful gas of the temperature of drainage pipeline, pressure, seepage situation, drainage pipeline inside and breakdown maintenance information, and can be connected and set up historical data base with backstage underground pipeline data handling system with read-write equipment by remote probe.The direct current energy that radio frequency chip obtains by rectifier should be enough to drive above-mentioned multiple sensor.
Earth conductor 13 can adopt metal, conductive rubber etc.; Can adopt schistose texture, also can adopt block structure.Earth conductor 13 is for making the Passive LC resonant circuit reliable ground of electron marker 2, in order to guarantee that steel plastic composite wound pipe 1 does not affect its installation operation arranging after electron marker 2 earth conductors 13, guarantee that earth conductor is positioned at the cylindrical region that the maximum outer rim of this steel plastic composite wound pipe metal tape forms, do not protrude from outside the largest contours that steel plastic composite wound pipe metal tape 10 forms.
Remote probe and read-write equipment 3, underground pipeline data handling system 4 can adopt existing RFID remote probe and read-write equipment and underground pipeline data handling system.For example, remote probe and read-write equipment 3 can adopt RFID remote probe and read-write equipment as shown in Figure 5, this RFID remote probe and read-write equipment comprise radio frequency interface and logic control element, radio frequency interface comprises transmitter, receiver, clock generator, voltage regulator, antenna and power interface, and logic control element comprises microcontroller, application interface driver element and storage unit.
Remote probe and read-write equipment 3 can adopt portable remote to survey and read-write equipment, and its antenna loop area A will must be less than 1m conventionally
2, preferably adopt multiturn toroidal conductor; Due to multiturn toroidal conductor will with N
2mode increases its ring inductance pro rata, and this will make antenna present high impedance and limit the electric current that can be driven to wherein, therefore preferably adopts amplifier to convert transmitted waveform to high voltage output.The inductance also will limit the signal bandwidth of communicating by letter with the number of turn, and the quantity of information of transmission per second, in the present invention, preferably, on the basis of lowest signal bandwidth, minimum communication quality, saves power consumption and descends intentinonally detection range.
For example, there is 0.1m
2area, the antenna of 50 circles, during with the current drives of 10A magnitude, will provide 50A m
2dipole moment, this is enough to medium background noise level, penetrates and is permitted eurypalynous weak conduction stratum, the subsurface investigation and the communication capacity that are greater than 10m are provided.
Spiral metal conductor antenna preferably adopts take normal direction mould radiation mode as main, be that the wavelength (λ) of described signal transmission is much larger than the diameter (D) of helical ring, preferably λ/D>5.56, now helical antenna has figure-eight pattern in the plane that comprises the axis of screw, in the plane perpendicular to the axis of screw, has greatest irradiation.Conventionally the spiral metal conductor diameter of steel plastic composite wound pipe is about 0.15～4 meter, and during as normal direction mould, applicable wavelengths is greater than 0.83～22.22 meter, and the pass of wavelength and frequency is f=c/ λ, and wherein c is the light velocity; Therefore the frequency of operation of remote probe and read-write equipment is less than 13.5MHz～361MHz.Preferably the operating frequency range of remote probe and read-write equipment is 1～33kHz, and for example, 577Hz or 33kHz are to solve the long-range detection problem of underground pipeline.
As shown in Figures 6 to 9, in the present embodiment, the metal tape 10 of earth conductor 13 and steel plastic composite wound pipe is achieved in that the conductor short column 10a on the metal tape 10 that comprises the concentric cable 15 of tape cable joint and be fixedly connected electrically in steel plastic composite wound pipe with being electrically connected of Passive LC resonant circuit, cable splice comprises the end pieces 20 and the compressing member that are mutually threaded, end pieces 20 is insulating part, and compressing member comprises the metal nuts 19 being threaded with this end pieces 20 and coordinates the metal compaction cover 18 that compresses concentric cable with this metal nuts 19.The inner hole sleeve of this end pieces 20 is on this conductor short column 10a, and its outside is fixedly connected with the plastic cement protective seam 11 of steel plastic composite wound pipe metal tape 10, and earth conductor 13 comprises allows that this borehole jack of Kong Bingjing that concentric cable passes is on the end pieces 20 of cable splice.The inner side of the metal compaction cover 18 of cable splice compressing member is electrically connected with the outer conductor 14 of this concentric cable 15, the metal nuts 19 of compressing member and the end pieces 20 of cable splice are threaded; this earth conductor 13 is fixed on the plastic cement protective seam 11 of steel plastic composite wound pipe metal tape 10, the inner wire 12 of this concentric cable 15 is electrically connected with conductor short column 10a.The inner wire 12 of concentric cable 15 is electrically connected with an electrode of Passive LC resonance electric capacity, and the outer conductor 14 of concentric cable 15 is electrically connected with Passive LC resonant circuit earth terminal.
As shown in Figure 7, insulcrete 16 is set, axial notch adaptation between this insulcrete 16 and the metal tape of steel plastic composite wound pipe 1, insulcrete 16 is fixed on earth conductor 13 on the plastic cement tube wall outside of steel plastic composite wound pipe 1 or the metal tape 10 of steel plastic composite wound pipe 1 (both mutually insulateds).
In other embodiments, the spiral metal conductor of steel plastic composite wound pipe is wound in 3 or 4 spirals by 3 to 4 parallel metal band coaxial spirals.When one of them spiral metal conductor is taken as aerial coil, and by the humorous frequency of operation that is adjusted to, and other coaxial metal spiral conductors are not when tuning, the electric current exciting in these coaxial metal spiral conductors will produce coupling, and inductance weakens and is taken as the magnetic field that the spiral metal conductor of antenna produces.To this spiral metal conductor with multi-head spiral, preferably adopt equally coaxial cable to be connected to independently Passive LC resonant circuit to remaining coaxial spiral, independent Passive LC resonant circuit adopts and coaxial spiral can be tuned to the series capacitance that exceeds one times of above series resonance frequency than frequency of operation, and less resistance is set; Make the impedance of this resonant circuit take electric capacity as main, and can make voltage drive current in the direction that adds high-intensity magnetic field of responding in working screw.
As shown in Figure 9, the reliability being electrically connected with conductor short column 10a in order to improve the inner wire 12 of concentric cable 15, end at conductor short column 10a arranges shrinkage pool, guarantee this shrinkage pool and inner conductor 12 adaptations, the end of this inner conductor 12 is inserted to electrical connection in the shrinkage pool of this conductor short column 10a and coordinate.
In other embodiments, the metal tape 10 of earth conductor 13 and steel plastic composite wound pipe is electrically connected and can adopts other syndetons with Passive LC resonant circuit, for example, can adopt respectively wire that the metal tape of earth conductor 13 and steel plastic composite wound pipe 10 is electrically connected with earth terminal and the resonance capacitance electrode of Passive LC resonant circuit respectively.
For convenient, underground steel plastic composite wound pipe is carried out to Detection location, electron marker 2 is disposed on the outside body of steel plastic composite wound pipe 1, spacing distance is desirable is more than or equal to 5 meters, be less than or equal to 10 meters.
Claims (8)
1. the pipeline recognition system based on RFID, comprises steel plastic composite wound pipe, electron marker, remote probe and read-write equipment and underground pipeline data handling system; This steel plastic composite wound pipe and electron marker are embedded in underground, and this remote probe is communicated by letter with this electron marker on ground and read the information of this electron marker and communicate by letter the electron marker information reading is sent to this underground pipeline data handling system with this underground pipeline data handling system with read-write equipment; Described electron marker comprise radio frequency chip and with the wired or wireless Passive LC resonant circuit being connected of this chip, described steel plastic composite wound pipe comprises the metal tape that is spirally wound on its plastic cement tube wall outside, this metal tape outer side covers plastic cement protective seam;
It is characterized in that, this pipeline recognition system also comprises and is attached to the earth conductor on body outside described steel plastic composite wound pipe, this earth conductor is with the metal tape mutually insulated of described steel plastic composite wound pipe, be electrically connected with the earth terminal of described Passive LC resonant circuit, and this steel plastic composite wound pipe metal tape is electrically connected with an electrode of described Passive LC resonance electric capacity.
2. the pipeline recognition system based on RFID as claimed in claim 1, is characterized in that, the metal tape of described steel plastic composite wound pipe is vertically spirally wound on this steel plastic composite wound pipe plastic cement tube wall outside.
3. the pipeline recognition system based on RFID as claimed in claim 1, it is characterized in that, the metal tape xsect of described steel plastic composite wound pipe comprises the crest that two hypotenuses form and is arranged on this two hypotenuses downside and the smooth short pin coordinating outside this steel plastic composite wound pipe plastic cement tube wall.
4. the pipeline recognition system based on RFID as claimed in claim 1, it is characterized in that, comprise insulcrete, the axial notch adaptation between this insulcrete and the metal tape of described steel plastic composite wound pipe is also fixed on this steel plastic composite wound pipe outside by described earth conductor.
5. the pipeline recognition system based on RFID as claimed in claim 1, is characterized in that, described earth conductor is positioned at the cylindrical region that the maximum outer rim of this steel plastic composite wound pipe metal tape forms after being attached to outside described steel plastic composite wound pipe on body.
6. the pipeline recognition system based on RFID as described in one of claim 1 to 5, it is characterized in that, the metal tape of described earth conductor and described steel plastic composite wound pipe is achieved in that the conductor short column on the metal tape that comprises the concentric cable of tape cable joint and be fixedly connected electrically in described steel plastic composite wound pipe with being electrically connected of described Passive LC resonant circuit, this cable splice comprises the end pieces and the compressing member that are mutually threaded, this end pieces is insulating part, this compressing member comprises the metal nuts being threaded with this end pieces and coordinates the metal compaction cover that compresses concentric cable with this metal nuts, the inner hole sleeve of this end pieces on this conductor short column, outside is fixedly connected with the plastic cement protective seam of described steel plastic composite wound pipe metal tape, described earth conductor comprises allows that this borehole jack of Kong Bingjing that described concentric cable passes is on the end pieces of described cable splice, the metal compaction cover inner side of described cable splice compressing member is electrically connected with the outer conductor of this concentric cable, the metal nuts of compressing member and the end pieces of described cable splice are threaded is fixed on described earth conductor on the plastic cement protective seam of described steel plastic composite wound pipe metal tape, and the inner wire of this concentric cable is electrically connected with described conductor short column, this inner conductor is electrically connected with an electrode of described Passive LC resonance electric capacity, and this coaxial cable outer conductor is electrically connected with described Passive LC resonant circuit earth terminal.
7. the pipeline recognition system based on RFID as claimed in claim 6, it is characterized in that, described conductor short column comprises the shrinkage pool that is arranged on its end, this shrinkage pool and described inner conductor adaptation, and the interior electrical connection of shrinkage pool that this conductor short column is inserted in this inner conductor end coordinates.
8. the pipeline recognition system based on RFID as described in one of claim 1 to 5, is characterized in that, described electron marker is disposed on outside described steel plastic composite wound pipe on body, and spacing distance is more than or equal to 5 meters, is less than or equal to 10 meters.
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| CN201410065753.0A CN103793733B (en) | 2014-02-26 | 2014-02-26 | A kind of pipeline identifying system based on RFID |
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