CN1758023A - Measuring system for small aperture underground pipeline - Google Patents
Measuring system for small aperture underground pipeline Download PDFInfo
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- CN1758023A CN1758023A CN 200510027070 CN200510027070A CN1758023A CN 1758023 A CN1758023 A CN 1758023A CN 200510027070 CN200510027070 CN 200510027070 CN 200510027070 A CN200510027070 A CN 200510027070A CN 1758023 A CN1758023 A CN 1758023A
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Abstract
A measuring system for measuring the underground small-diameter (33 mm) pipeline is composed of computer, gradiometer, accelerometer and mileometer. Its advantage is high precision.
Description
Technical field
The present invention relates to the autonomous measuring system of the underground pipeline degree of depth, particularly measuring system for small aperture underground pipeline is applied to the depth survey of various non-excavation/excavating underground pipe lines (internal diameter is less than 110mm).
Background technology
Underground pipeline (water, coal, electricity etc.) is the important foundation facility in city.Usually adopting conventional geophysical prospecting equipment (as pipeline detection instrument, geological radar etc.) that underground pipeline is carried out the degree of depth measures.And this method is to adopt electromagnetic induction principle to measure pipeline depth, exists two defectives: the first, and after the residing degree of depth of pipeline was very big, surpasses 5 meters, it is very big that measuring error can become; When the degree of depth reaches below 10 meters, the underground electromagnetic wave that transmits, reflection of radar wave signal seriously decayed and make to measure become almost become impossible.The second, even under the superficial situation of the degree of depth, this metering system also can because of the underground extensive existence in city such as the existence of pipelines such as electric power, gas-pipe line and be subjected to serious interference.Under this background, press for a kind of depth survey mode that is not subjected to external interference on the engineering.In addition, for widely used small-bore pipeline (internal diameter 33mm) in trenchless engineering, still there is not more accurate mode at present to its depth survey below 5 meters.
Summary of the invention
Technical matters to be solved by this invention is: the accurate depth detecting method of small-bore pipeline below 5 meters needs to solve the problems of measurement under the external interference problem and the big degree of depth.
The present invention is achieved like this:
A kind of measuring system for small aperture underground pipeline, comprise measuring unit, record cell and computing unit, total system is divided into ground monitoring system and underground survey system, ground monitoring system comprises notebook computer and communication module, and notebook computer is used for control program and handles data that under ground portion sends, sends order control under ground portion; The underground survey system comprises communication module, power supply conditioning module, central microprocessing unit, accelerometer module, inclinometer module, odometer module and analog-to-digital conversion module, and the power supply conditioning module provides power supply for other all modules of under ground portion; CPU (central processing unit) is the nucleus module of under ground portion, handles the data that other each module transmission of under ground portion comes, and data are passed earthward by 232 forms; The accelerometer module is utilized the single-chip microcomputer pattern to finish and is measured the acceleration pitch angle, and data are passed to CPU (central processing unit); The inclinometer module is utilized the electrolytic solution pattern to finish and is measured the pitch angle, and data are passed to analog-to-digital conversion module; Another accelerometer module utilizes the micromechanics pattern to finish the measurement at pitch angle, and data are passed to analog-to-digital conversion module; Analog-to-digital conversion module carries out analog to digital conversion to the data that another accelerometer module and inclinometer module transmit, and transformation result is passed to CPU (central processing unit); The odometer module is finished the real-time continuous of length of pipeline is measured, and the step-by-step counting of odometer is passed to CPU (central processing unit) and handled.
The core content of system is among the present invention:
1) adopt measuring elements such as inclinometer, accelerometer the degree of depth to be measured at pipe interior.This mode can realize autonomous measurement, (and traditional measuring method is in ground survey not to be subjected to extraneous interference, be subjected to the disturbing effect big), scope for depth survey does not have concrete requirement, can measure the pipeline of any degree of depth in theory, have great superiority for the measurement of underground 10 mitron lines.
2) Machine Design, device select and system design on fully take into account the requirement of small-bore pipeline, accomplish the height microminiaturization of system. owing to adopted MEMS (micromachined) technology, the volume of measuring element is all very little, makes measurable pipeline internal diameter can accomplish very little (33mm).These are that existing metering system can't satisfy simultaneously.
3) by multi-sensor fusion technology, can effectively improve measuring accuracy.Survey sensor, for example inclinometer, accelerometer etc. all have different shortcomings, therefore adopt multi-sensor fusion technology, promptly constitute measuring system jointly by sensor based on various different measuring principles, utilize information fusion technology to handle the measurement data of multiple sensors, can farthest reduce measuring error.
Description of drawings
Fig. 1 system architecture diagram
Fig. 2 system annexation and measuring method synoptic diagram
Embodiment
As can be known from Fig. 1, total system is divided into two subsystems of ground monitoring system and underground survey system.
Ground monitoring system: ground host has adopted a notebook computer of being convenient to work on the spot.Control program is handled the data that the under ground portion transmission comes in the notebook computer, sends order control under ground portion.Communication between ground and the underground survey system adopts 144 to compile Shielded Twisted Pair, and this communication modes can guarantee 300 meters no error codes of transmission, the basic measurement of satisfying present most underground utilities (＜200 meters) in theory.
The underground survey system: this is the form of lower part employing more piece split connection systematically, helps the turning by pipeline.The underground survey system front end is a draught line, is responsible for the motion of measurement of length and trailer system in-line, and the rear end is a data line, is responsible for the communication with the floor treatment main frame.
Communication module (RS485) changes 232 communication modules: change 485 communication modules with RS232 and finish the underground two-part communication in ground.
Power supply conditioning module: power supply is provided for other all modules of under ground portion.
Central authorities' microprocessing unit (C8051MCU): the nucleus module of under ground portion,, handle the data that other each module transmission of under ground portion comes, and data passed earthward by 232 forms.
Acceleration module (TD45-1): utilize the single-chip microcomputer pattern to finish the measurement acceleration, and data are passed to CPU (central processing unit) (MCU).
Inclinometer module (TD45-2): utilize the single-chip microcomputer pattern to finish and measure the pitch angle, and data are passed to CPU (central processing unit) (MCU).
Inclinometer module (901-45T): utilize the electrolytic solution pattern to finish and measure the pitch angle, and data are passed to analog to digital converter (AD) module.
Accelerometer module (ADXL202): utilize micromechanics pattern (MEMS) to finish the measurement at pitch angle, and data are passed to the AD module.
AD gathers modular converter: the data that ADXL202 module and 901-45T module transmit are carried out the AD conversion, and transformation result is passed to MCU.
Odometer module: finish the real-time continuous of length of pipeline is measured.The step-by-step counting of odometer is passed to MCU and is handled.
The master control measuring unit comprises central processing module, acceleration module (TD45), mileage machine etc.
Comprise inclinometer module (901-45) etc. in the measuring unit.
Components and parts in the above functional module all are commercially available outsourcing pieces.
Fig. 2 shows system of the present invention annexation and measuring method.General operating process is:
(1) Ground Control is at first carried out " System self-test ": carry out the self check of each device of system, and the connection of communication;
(2) " begin to gather ": begin to gather current inclination angle, simultaneously, inclination data will be drawn in computer real-time displaing coordinate figure in real time, and will be very directly perceived, be convenient to operating personnel and monitor.
(3) " suspend and gather ", system can carry out computing to data after suspending collection, calculate the current degree of depth, calculates the underground survey system with respect to the horizontal ordinate in the position of pipeline porch, demonstrates the current degree of depth and coordinate.
After (4) points were measured and finished, ground surface motor pulling underground survey system (robot) was displaced to another position, and repetition (1), (2), (3) process are finished until whole section underground pipeline measurement.
Claims (4)
1, a kind of measuring system for small aperture underground pipeline, comprise measuring unit, record cell and computing unit, it is characterized in that: total system is divided into ground monitoring system and underground survey system, ground monitoring system comprises notebook computer and communication module, and notebook computer is used for control program and handles data that under ground portion sends, sends order control under ground portion; The underground survey system comprises communication module, power supply conditioning module, central microprocessing unit, accelerometer module, inclinometer module, odometer module and analog-to-digital conversion module, and the power supply conditioning module provides power supply for other all modules of under ground portion; CPU (central processing unit) is the nucleus module of under ground portion, handles the data that other each module transmission of under ground portion comes, and data are passed earthward by 232 forms; The accelerometer module is utilized the single-chip microcomputer pattern to finish and is measured the acceleration pitch angle, and data are passed to CPU (central processing unit); The inclinometer module is utilized the electrolytic solution pattern to finish and is measured the pitch angle, and data are passed to analog-to-digital conversion module; Another accelerometer module utilizes the micromechanics pattern to finish the measurement at pitch angle, and data are passed to analog-to-digital conversion module; Analog-to-digital conversion module carries out analog to digital conversion to the data that another accelerometer module and inclinometer module transmit, and transformation result is passed to CPU (central processing unit); The odometer module is finished the real-time continuous of length of pipeline is measured, and the step-by-step counting of odometer is passed to CPU (central processing unit) and handled.
2, measuring system for small aperture underground pipeline according to claim 1 is characterized in that: the communication between described ground and the underground survey system adopts 144 to compile Shielded Twisted Pair.
3, measuring system for small aperture underground pipeline according to claim 1 and 2, it is characterized in that: the inclinometer of employing, acceleration analysis device can be realized autonomous measurement, be not subjected to extraneous interference, scope for depth survey can be measured any degree of depth in theory, measurement for underground 10 mitron lines has great superiority, and the pipeline internal diameter of measurement can be accomplished 33mm.
4, measuring system for small aperture underground pipeline according to claim 1 and 2 is characterized in that: odometer has participated in the real-time continuous of underground utilities length is measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510027070 CN1758023A (en) | 2005-06-23 | 2005-06-23 | Measuring system for small aperture underground pipeline |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200510027070 CN1758023A (en) | 2005-06-23 | 2005-06-23 | Measuring system for small aperture underground pipeline |
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| CN1758023A true CN1758023A (en) | 2006-04-12 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563359A (en) * | 2011-12-30 | 2012-07-11 | 中国石油天然气股份有限公司 | Method and system for automatically monitoring vertical displacement of oil and gas pipeline in frozen soil region |
| CN106855410A (en) * | 2015-12-08 | 2017-06-16 | 中国航空工业第六八研究所 | A kind of underground piping positioning measurement equipment based on inertial technology |
| CN108007432A (en) * | 2018-01-03 | 2018-05-08 | 中建三局集团有限公司 | The earth's surface monitoring device and its application method of underground utilities |
-
2005
- 2005-06-23 CN CN 200510027070 patent/CN1758023A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563359A (en) * | 2011-12-30 | 2012-07-11 | 中国石油天然气股份有限公司 | Method and system for automatically monitoring vertical displacement of oil and gas pipeline in frozen soil region |
| CN106855410A (en) * | 2015-12-08 | 2017-06-16 | 中国航空工业第六八研究所 | A kind of underground piping positioning measurement equipment based on inertial technology |
| CN108007432A (en) * | 2018-01-03 | 2018-05-08 | 中建三局集团有限公司 | The earth's surface monitoring device and its application method of underground utilities |
| CN108007432B (en) * | 2018-01-03 | 2023-11-07 | 中建三局集团有限公司 | Surface monitoring device for underground pipeline and application method thereof |
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