CN101737632A - Method for tracking in-pipeline detector based on sound detection - Google Patents
Method for tracking in-pipeline detector based on sound detection Download PDFInfo
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- CN101737632A CN101737632A CN200910228984A CN200910228984A CN101737632A CN 101737632 A CN101737632 A CN 101737632A CN 200910228984 A CN200910228984 A CN 200910228984A CN 200910228984 A CN200910228984 A CN 200910228984A CN 101737632 A CN101737632 A CN 101737632A
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Abstract
The invention discloses a method for tracking an in-pipeline detector based on sound detection, which comprises the following steps: 1) setting sound signal characteristics of a sound production device, loading the sound production device to the in-pipeline detector, putting the in-pipeline detector into a pipeline, and producing a characteristic sound signal in a certain mode through the sound production device; 2) detecting a detection point through a sensor, and converting a sound signal into an electric signal when the sound signal is detected; 3) processing and outputting the electric signal; and 4) judging whether the output electric signal is the characteristic sound signal produced by the sound production device, and if the output electric signal is not the characteristic sound signal produced by the sound production device, executing the step 2). The method of the invention not only can actively track the static or dynamic in-pipeline detector, but also has higher sensitivity and accuracy.
Description
Technical field
The present invention relates to the pipe detection technical field, particularly relate to a kind of method for tracking in-pipeline detector based on sound detection.
Background technique
The pipeline detection technology is to be used to judge corrosive pipeline failure risk and a kind of pipeline integrity management tool that makes it to quantize.Its basic principle is that in-pipeline detector is put in the pipeline, in pipeline, in pipeline, move under the promotion of transmission medium, detection device and mileage positioning device are housed on the internal detector, for example detect the device of geometric deformation in the pipeline, the leakage magnetic detection device that detects corrosive pipeline and mileage wheel or the like.
In-pipeline detector can as pipeline corner smaller part, climbing place, threeway place and crucial joint or the like, have stuck phenomenon at these position in-pipeline detectors through some specific positions in the pipeline running.In addition, pipe interior can deposit foreign material in long-term operation process, especially carries the pipe interior impurity of oil body more.In-pipeline detector contacts with inner-walls of duct in running, the continuous accumulation of foreign matter of meeting on the in-pipeline detector, and stuck phenomenon may take place than many places in deposition impurity in pipe.Therefore, need follow the trail of, whether pass through specific position smoothly to judge it to in-pipeline detector; As stuck phenomenon takes place, also need to judge the stuck position of in-pipeline detector by follow-up mechanism.
Existing a kind of solution is based on the tracing system that detects the pulse electromagnetic signal.It has added signal transmitter in in-pipeline detector, broken hair radio magnetic signal is not provided at an outer portion with the signal that sends when receiving antenna is used for the received signal transmitter through the monitoring point.In the time of in signal transmitter is in certain monitoring range, antenna receives the signal of transmitter, and the inspector begins to monitor in-pipeline detector.
The shortcoming of the method is: the first, and the signal of transmitter emission is an electromagnetic signal in the in-pipeline detector.But increase along with pipe diameter, pipeline wall thickness and buried depth all increase, the transmission that these can weaken electromagnetic signal, and the sensitivity of the signal that receives seriously descends, in case the motion speed of in-pipeline detector is very fast, may detect electromagnetic signal less than emission.The second, this device receiving antenna inside is loop construction, has electromagnetic interference in the detection.
Another method is based on the tracing system to the detection principle of seismic waves.This system is used for detecting the amplifying signal of the sound signal that in-pipeline detector produces when mobile in pipeline.The characteristics of this tracing system are: at first, testing signal is the signal that produces in the in-pipeline detector running, no external signal sonification system; Secondly, adopted the higher seismic waves sensor of sensitivity.The signal that detects can store by amplification, also can directly allow the inspector hear that in-pipeline detector is through out-of-date sound by earphone simultaneously.
The shortcoming of the method is: the first, and the testing signal of this method is the fricative sound signal of in-pipeline detector and pipeline, the interior detection system in therefore can only tracing movement, and can't follow the trail of stuck at ducted internal detector; The second, the method is by interesting to listen to sound, because detected signal does not have obvious characteristic, and the interference of ambient sound signal is more, so signal identification difficulty, detection accuracy is poor.
Summary of the invention
The purpose of this invention is to provide a kind of method for tracking in-pipeline detector based on sound detection, its not only can be initiatively to static or dynamically in-pipeline detector follow the tracks of, and sensitivity and accuracy are higher.For this reason, technological scheme of the present invention is as follows:
A kind of based on producing the method for tracking in-pipeline detector that detects, may further comprise the steps:
1) voice signal property of sounding device is set, sounding device is loaded on the in-pipeline detector, in-pipeline detector is put into pipeline, sounding device sends the characteristic sounds signal by certain way;
2) by sensor Check point is detected, and when detecting sound signal, sound signal is converted to electrical signal;
3) above-said current signal is handled and exported;
4) judge whether the signal of being exported is the characteristic sounds signal that sounding device produces, if not, execution in step 2).
Being output as demonstration output described in the above-mentioned step 3), in the artificial judgement that is judged as described in the step 4).
The present invention can also judge whether the signal of being exported is the characteristic sounds signal that sounding device produces by instrument, if then send alarm signal or carry out data display simultaneously.
Above-mentioned certain way is: in the in-pipeline detector running all the time sounding, at in-pipeline detector running discontinuous sounding or only sounding when stuck takes place at in-pipeline detector.
Above-mentioned sounding device is electronic sound-producing device or mechanical sounding device.
The method for tracing of in-pipeline detector of the present invention is based on sound signal and detects principle, can initiatively detect in-pipeline detector.Because the characteristic sounds signal that sends of sounding device is strong to pipeline, soil penetrating power with respect to electromagnetic signal, and antijamming capability is strong, so be more suitable for heavy caliber, heavy wall, buried pipeline; Because this method reduces the restriction of in-pipeline detector motion speed, so improved the sensitivity and the accuracy that detect.In addition, the characteristic sounds signal frequency of sounding device of the present invention is adjustable, and the highi degree of accuracy that can adapt under the different soils structure detects.
Description of drawings
Fig. 1 is the flow chart of method for tracking in-pipeline detector of the present invention.
Embodiment
Below in conjunction with accompanying drawing the method for tracking in-pipeline detector based on sound detection of the present invention is elaborated.
At first referring to Fig. 1, the method for tracking in-pipeline detector based on sound detection of the present invention may further comprise the steps:
Step S101: the voice signal property of sounding device is set, is fixed in sounding device on the in-pipeline detector and puts into pipeline, sounding device sends the characteristic sounds signal by certain way.Described voice signal property can be that eigen frequency, ringing time-ring are at interval than (ratio in the ringing time and the adjacent time lag of ringing for twice), the two combination or other feature that is fit to.In detail, after voice signal property is set, be fixed in sounding device on the in-pipeline detector and put into pipeline, sounding device sends the characteristic sounds signal by certain way, described certain way can be in the in-pipeline detector running all the time sounding, at in-pipeline detector running discontinuous sounding or only just sounding takes place when stuck at in-pipeline detector.Sounding device among the present invention can be an electronic sound-producing device, also can be mechanical sounding device, as mechanical type chirping of birds device, mechanical music box, electronic hammer or the electrically operated bell of knocking, controller is housed on the sounding device, is used for the characteristic information of guide sound tone signal.
Preferably, sound signal is the bicharacteristic mode, promptly has sound frequency feature and temporal characteristics concurrently.That is: the sound signal that sends by certain way of sounding device is the sound signal with eigen frequency and specific ringing time-ratio blanking time of ringing.Preferably, under the prerequisite that satisfy to detect requires, ringing time-ring at interval than value should be as far as possible little, to reduce the power consumpiton of sounding device, prolong the service time of sounding device.
The characteristic sounds signal that sounding device sends has stronger penetrating power to pipeline, soil with respect to electromagnetic signal, so detectivity height, be applicable to heavy caliber, heavy wall, buried pipeline, the motion speed restriction of in-pipeline detector is reduced, help improving and follow the trail of degree of accuracy.
Step S102: by sensor Check point is detected, and when detecting sound signal, sound signal is converted to electrical signal and output.Check point can be arranged on pipeline corner smaller part, climbing place, threeway place and crucial joint etc. stuck position easily takes place.Described sensor can be seismic waves sensor, capacitive transducer, moving coil pickoff, piezoceramic transducer or other right sensors, preferably piezoceramic transducer.When selecting piezoceramic transducer for use, piezoceramic transducer need be put in the ground of measuring point to be checked, keep sensor to contact with the good of ground.When in-pipeline detector was near Check point, the characteristic sounds signal that its sounding device that carries sends was to propagating all around and being arrived by sensor.
Step S103: the electrical signal to sensor output amplifies and Shelving.Signal after amplification and the Shelving is exported after can being converted to digital signal (step S104) by D/A converting circuit again, also can directly export.
Step S105: judge whether the signal of being exported is the characteristic sounds signal that sounding device produces, if not, execution in step S102.
Concrete decision method is: carry out frequency analysis by digital signal processor word sound signal, judge whether to be the characteristic sounds signal.Preferably, the spectral characteristic of signal and the frequecy characteristic of characteristic sounds signal are compared; Simultaneously, judge whether the ringing time and the ratio at interval of ringing are the value that sounding device sets.If both are all consistent, judge that then this digital audio signal is the characteristic sounds signal that sounding device produces, and judges that promptly in-pipeline detector is in detection range.
Step S106: judgement receive be the characteristic sounds signal time, send alarm signal or carry out data display simultaneously.
In addition, in step S103, to the electrical signal of sensor output amplify with Shelving after, also can directly show the electrical signal after the processing, artificially judge whether the signal of being exported is the characteristic sounds signal that sounding device produces.
Claims (5)
1. method for tracking in-pipeline detector based on sound detection may further comprise the steps:
1) voice signal property of sounding device is set, sounding device is loaded on the in-pipeline detector, in-pipeline detector is put into pipeline, sounding device sends the characteristic sounds signal by certain way;
2) by sensor Check point is detected, and when detecting sound signal, sound signal is converted to electrical signal;
3) above-said current signal is handled and exported;
4) judge whether the signal of being exported is the characteristic sounds signal that sounding device produces, if not, execution in step 2).
2. method for tracking in-pipeline detector according to claim 1 is characterized in that: be output as described in the step 3) and show output, be judged as artificial judgement described in the step 4).
3. method for tracking in-pipeline detector according to claim 1 is characterized in that: judge by instrument whether the signal of being exported is the characteristic sounds signal that sounding device produces, if send alarm signal or carry out data display simultaneously.
4. according to each described method for tracking in-pipeline detector in the claim 1～3, it is characterized in that described certain way is: in the in-pipeline detector running all the time sounding, at in-pipeline detector running discontinuous sounding or only sounding when stuck takes place at in-pipeline detector.
5. according to each described method for tracking in-pipeline detector in the claim 1～3, it is characterized in that: described sounding device is electronic sound-producing device or mechanical sounding device.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979910A (en) * | 2010-09-14 | 2011-02-23 | 天津大学 | Method for correcting odometer wheel error of internal detector of pipeline |
| CN102444786A (en) * | 2011-12-07 | 2012-05-09 | 天津大学 | Spherical internal detector for detecting petroleum transmission pipeline leakage |
| CN102927451A (en) * | 2011-12-07 | 2013-02-13 | 天津大学 | Method for detecting tiny leakage of oil transmission pipeline |
| CN104237917A (en) * | 2014-09-04 | 2014-12-24 | 中国石油天然气股份有限公司 | Real-time tracking system and method for detector in pipeline |
| CN104266084A (en) * | 2014-09-22 | 2015-01-07 | 天津大学 | Distributed optical fiber sensor based tracking and positioning method of detector in oil conveying pipe |
| CN105510930A (en) * | 2016-01-11 | 2016-04-20 | 盛隆石油管检测技术有限公司 | Ground marking system and method based on Beidou satellite |
| CN105805563A (en) * | 2016-05-10 | 2016-07-27 | 广州丰谱信息技术有限公司 | Endoscopic pipe leakage and blockage ultrasonic detection device and method based on channel association |
| CN108518586A (en) * | 2018-04-10 | 2018-09-11 | 浙江科技学院 | Detection city landslide causes Gas Pipe to bury the packaged type device for squeezing off leakage |
-
2009
- 2009-12-07 CN CN200910228984A patent/CN101737632A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979910A (en) * | 2010-09-14 | 2011-02-23 | 天津大学 | Method for correcting odometer wheel error of internal detector of pipeline |
| CN101979910B (en) * | 2010-09-14 | 2012-11-07 | 天津大学 | Method for correcting odometer wheel error of internal detector of pipeline |
| CN102444786A (en) * | 2011-12-07 | 2012-05-09 | 天津大学 | Spherical internal detector for detecting petroleum transmission pipeline leakage |
| CN102927451A (en) * | 2011-12-07 | 2013-02-13 | 天津大学 | Method for detecting tiny leakage of oil transmission pipeline |
| CN102927451B (en) * | 2011-12-07 | 2014-01-01 | 天津大学 | Method for detecting tiny leakage of oil transmission pipeline |
| CN104237917A (en) * | 2014-09-04 | 2014-12-24 | 中国石油天然气股份有限公司 | Real-time tracking system and method for detector in pipeline |
| CN104237917B (en) * | 2014-09-04 | 2017-02-15 | 中国石油天然气股份有限公司 | Real-time tracking system and method for detector in pipeline |
| CN104266084A (en) * | 2014-09-22 | 2015-01-07 | 天津大学 | Distributed optical fiber sensor based tracking and positioning method of detector in oil conveying pipe |
| CN105510930A (en) * | 2016-01-11 | 2016-04-20 | 盛隆石油管检测技术有限公司 | Ground marking system and method based on Beidou satellite |
| CN105805563A (en) * | 2016-05-10 | 2016-07-27 | 广州丰谱信息技术有限公司 | Endoscopic pipe leakage and blockage ultrasonic detection device and method based on channel association |
| CN108518586A (en) * | 2018-04-10 | 2018-09-11 | 浙江科技学院 | Detection city landslide causes Gas Pipe to bury the packaged type device for squeezing off leakage |
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Application publication date: 20100616 |