CN111220121A - Railway roadbed settlement multipoint monitoring device and method based on LED imaging - Google Patents

Railway roadbed settlement multipoint monitoring device and method based on LED imaging Download PDF

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Publication number
CN111220121A
CN111220121A CN201911138097.1A CN201911138097A CN111220121A CN 111220121 A CN111220121 A CN 111220121A CN 201911138097 A CN201911138097 A CN 201911138097A CN 111220121 A CN111220121 A CN 111220121A
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detector
led
imaging
lens
monitoring
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杨松
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Nanjing University of Aeronautics and Astronautics
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Nanjing University of Aeronautics and Astronautics
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D1/00—Investigation of foundation soil in situ

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The invention discloses a railway roadbed settlement multipoint monitoring device based on LED imaging and a method thereof, wherein the device comprises a rail arranged on a roadbed and a train running on the rail, the train is provided with a detector, a plurality of monitoring piles which are sequentially arranged are arranged on two sides of the roadbed, each monitoring pile is fixedly provided with an LED module, and when the train runs and passes through the monitoring pile, the detector receives light emitted by the LED module; the invention has the advantages of low cost, rapidness, accuracy and multipoint measurement of railway subgrade settlement.

Description

Railway roadbed settlement multipoint monitoring device and method based on LED imaging
Technical Field
The invention belongs to the technical field of measurement application, and particularly relates to a railway roadbed settlement multipoint monitoring device and method based on LED imaging.
Background
In recent years, with the development of railway technology, high-speed railways have become one of the important transportation means for people to go out and go far due to their advantages of high popularity, high speed, good stability and the like. But the problem of railway safety is also accompanied by the emergence of water, such as falling rocks in mountains and landslides in the range of the rails. Particularly, if the height of the railway subgrade is settled, the height or the distance between rails on two sides of a railway is changed, so that the running of a train is bumpy to influence the stability of the train, and the derailment of the train is caused to greatly threaten the life safety of passengers. Therefore, railway safety becomes an important problem to be solved urgently in China.
The prior art (patent publication number: CN 10373132A) discloses a method for measuring subgrade settlement by using laser remote imaging, which is different from the present invention in three points: 1) the light source adopted by the disclosed technology is laser, the directivity of the laser is easy to be influenced by environmental factors, for example, the laser can deviate when being transmitted in the air with temperature or air pressure gradient, so that the measurement accuracy is greatly influenced, and the influence of the environmental factors on the measurement result is greatly reduced by using the LED light source; 2) the laser module and the detection module are fixed on a railway roadbed along a railway, and the LED and the detector are respectively fixed on the detection piles on two sides of the railway and the train, so that the calculation of the system is simplified; 3) the disclosed technology requires multiple sets of laser-detector modules to measure the subgrade settlement of the whole line, but the invention can quickly measure the subgrade settlement only by multiple LEDs and one detector, thereby greatly reducing the cost of the system.
Disclosure of Invention
The invention provides a railway roadbed settlement multipoint monitoring device based on LED imaging and a method thereof, which aim to solve the problems in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a railway roadbed subsides multiple spot monitoring devices based on LED formation of image, is including setting up the rail on the road bed and the train of operation on the rail, be provided with the detector on the train, the both sides that are located the road bed all are provided with the monitoring stake that a plurality of arranged in proper order, and the height of monitoring stake can not change along with time and environmental factor's change, all is fixed with the LED module on every monitoring stake, and the train operation is and when monitoring the stake, and the light of LED module transmission is received to the detector.
Furthermore, the monitoring device also comprises a lens fixed on the outer side of the detector outside the train through a fixing support, the positions of the lens and the detector are relatively fixed and unchanged, and the distance between the lens and the detector is the focal length of the lens.
Preferably, the lens is a convex lens.
Further, the height of the detector, the height of the lens and the height of the LED module are consistent.
Further, the emitting direction of the LED module is horizontally pointed to the roadbed of the railway by the monitoring pile, and the height of the LED module does not change along with the change of time.
Preferably, the monitoring piles are arranged at equal intervals.
A method for monitoring a railway roadbed settlement multipoint monitoring device based on LED imaging as claimed in any one of claims 1-n, wherein the method comprises the following steps:
the light emitted by the LED module passes through a transmission distance L1Then passes through the lens and the distance L2Focusing on detectors, if the height of the track bed changes H1And the change of the imaging height of the LED module on the corresponding detector is H2Then, then there are:
L1/L2=H1/H2formula (1)
H1= L1H2/L2Formula (2)
Wherein: l is1Is the distance between the LED module and the lens, L2Is the focal length of the lens, and is also the distance between the lens and the detector, H1Is the settlement value of the railway subgrade;
one rail line is provided with a group of monitoring piles and LED modules at the same interval, N sets of monitoring piles and LED modules are arranged, when a train runs on the rail line, the train runs from the starting point to the end point of the rail line, the detector records the imaging heights of the N LED modules, and the imaging heights are respectively marked as S11，S12，…，S1NWhen the train runs on the railway line again, the detector records the imaging heights of the N LED modules again from the starting point to the end point of the railway line, and the imaging heights are respectively marked as S21，S22，…，S2NThen, a change value S of the imaging height monitored by the secondary detector and the imaging height monitored by the primary detector can be obtained21-S11，S22-S12，…，S1N- S2NAnd then obtaining the change value of the height of the rail bed, namely the settlement value of the railway bed through the formula (2).
Compared with the prior art, the invention has the following beneficial effects:
the invention has the advantages of low cost, rapidness, accuracy and multipoint measurement of railway subgrade settlement.
Drawings
FIG. 1 is a schematic diagram of the apparatus of the present invention;
fig. 2 is a top view of the device of the present invention.
Detailed Description
The present invention will be further described with reference to the following examples.
As shown in fig. 1 and 2, a railway roadbed settlement multipoint monitoring device based on LED imaging comprises rails arranged on a roadbed and a train running on the rails, and is characterized in that: the detector is arranged on the train, the monitoring piles which are sequentially arranged are arranged on two sides of the roadbed, the height of each monitoring pile cannot change along with the change of time and environmental factors, the LED module is fixed on each monitoring pile, and when the train runs and passes through the monitoring piles, the detector receives light emitted by the LED modules.
Preferably, the monitoring device further comprises a lens fixed on the outer side of the detector outside the train through a fixing support, the position of the lens and the position of the detector are fixed relatively, and the distance between the lens and the detector is the focal length of the lens. The height of the detector, the height of the lens and the height of the LED module are consistent, and the lens is preferably a convex lens. The emitting direction of the LED module is horizontally pointed to the roadbed of the railway by the monitoring pile, and the height of the LED module does not change along with the change of time. Preferably, the monitoring piles are arranged at equal intervals.
It should be further noted that the fixing manner of the lens and the detector is not the core technology of the present invention, and any manner and connecting piece can be adopted as long as the lens and the detector are fixed on the outer wall of the train and the relative position is fixed.
In particular, the monitoring piles are used for fixing the LED modules, the positions of the LED modules are positioned on two sides of the rail subgrade, and the heights of the LED modules can be considered not to change along with the change of time or environmental factors; the LED module is used as an imaging light source, and the light emitted by the LED module faces the direction of the rail subgrade; the convex lens is fixed on the train through a fixing support and used for focusing the LED; the detector is fixed on the train, is positioned on the same horizontal line with the LED module and the lens, is arranged between the convex lens and the train and is used for receiving light emitted by the convex lens focusing LED module and measuring the position change of a focusing light spot; the train can run quickly on the track, and the convex lens and the detector are fixed on the outer surface of the train.
Example 1
The light emitted by the LED module passes through a transmission distance L1Then passes through the lens and the distance L2Focusing on detectors, if the height of the track bed changes H1And the change of the imaging height of the LED module on the corresponding detector is H2Then, then there are:
L1/L2=H1/H2formula (1)
H1= L1H2/L2Formula (2)
Wherein: l is1Is the distance between the LED module and the lens, L2Is the focal length of the lens, and is also the distance between the lens and the detector, H1Is the settlement value of the railway subgrade;
one rail line is provided with a group of monitoring piles and LED modules at the same interval, N sets of monitoring piles and LED modules are arranged, when a train runs on the rail line, the train runs from the starting point to the end point of the rail line, the detector records the imaging heights of the N LED modules, and the imaging heights are respectively marked as S11，S12，…，S1NWhen the train runs on the railway line again, the detector records the imaging heights of the N LED modules again from the starting point to the end point of the railway line, and the imaging heights are respectively marked as S21，S22，…，S2NThen, a change value S of the imaging height monitored by the secondary detector and the imaging height monitored by the primary detector can be obtained21-S11，S22-S12，…，S1N- S2N(the variation is H in formula (1) and formula (2)2) Then, the value of the change in the height of the track bed is obtained by the formula (2) (H is obtained1) I.e. the settlement of the railway bed.
The invention utilizes the imaging technology to image the LED light sources fixed on the two sides of the railway on the detector fixed on the train moving at high speed, thereby being capable of quickly and accurately measuring the subgrade settlement of the whole railway line. The invention has the advantages of low cost, rapidness, accuracy and multipoint measurement of railway subgrade settlement.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.

Claims (8)

1. The utility model provides a railway roadbed subsides multiple spot monitoring devices based on LED formation of image, is including setting up the rail on the road bed and the train that moves on the rail, its characterized in that: the detector is arranged on the train, a plurality of monitoring piles which are sequentially distributed are arranged on two sides of the roadbed, an LED module is fixed on each monitoring pile, and when the train runs and passes through the monitoring piles, the detector receives light emitted by the LED modules.
2. The LED imaging-based railway roadbed settlement multipoint monitoring device as claimed in claim 1, wherein: the detector is fixed on the outer surface of the train.
3. The LED imaging-based railway roadbed settlement multipoint monitoring device as claimed in claim 2, wherein: the device also comprises a lens fixed on the outer side of the detector outside the train through a fixing support, the position of the lens is relatively fixed with the detector, and the distance between the lens and the detector is the focal length of the lens.
4. The LED imaging-based railway roadbed settlement multipoint monitoring device as claimed in claim 3, wherein: the lens is a convex lens.
5. The LED imaging-based railway roadbed settlement multipoint monitoring device as claimed in claim 4, wherein: the height of the detector, the height of the lens and the height of the LED module are consistent.
6. The LED imaging-based railway roadbed settlement multipoint monitoring device as claimed in claim 1, wherein: and the emission direction of the LED module is horizontally pointed to the roadbed of the railway by the monitoring pile.
7. The LED imaging-based railway roadbed settlement multipoint monitoring device as claimed in claim 1, wherein: a plurality of monitoring piles are arranged at equal intervals.
8. The monitoring method of the LED imaging-based railway roadbed settlement multipoint monitoring device is characterized in that:
the light emitted by the LED module passes through a transmission distance L1Then passes through the lens and the distance L2Focusing on detectors, if the height of the track bed changes H1And the change of the imaging height of the LED module on the corresponding detector is H2Then, then there are:
L1/L2=H1/H2formula (1)
H1= L1H2/L2Formula (2)
Wherein: l is1Is the distance between the LED module and the lens, L2Is the focal length of the lens, and is also the distance between the lens and the detector, H1Is the settlement value of the railway subgrade;
one rail line is provided with a group of monitoring piles and LED modules at the same interval, N sets of monitoring piles and LED modules are arranged, when a train runs on the rail line, the train runs from the starting point to the end point of the rail line, the detector records the imaging heights of the N LED modules, and the imaging heights are respectively marked as S11，S12，…，S1NWhen the train runs on the railway line again, the detector records the imaging heights of the N LED modules again from the starting point to the end point of the railway line, and the imaging heights are respectively marked as S21，S22，…，S2NThen the imaging height monitored by the second detector and the imaging height monitored by the first detector can be obtainedIs a variation value S21-S11，S22-S12，…，S1N- S2NAnd then obtaining the change value of the height of the rail bed, namely the settlement value of the railway bed through the formula (2).
CN201911138097.1A 2019-11-20 2019-11-20 Railway roadbed settlement multipoint monitoring device and method based on LED imaging Pending CN111220121A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113551642A (en) * 2021-03-24 2021-10-26 中电建路桥集团有限公司 Sedimentation control monitoring system in construction of complex soft foundation roadbed of highway
CN115031684A (en) * 2022-04-25 2022-09-09 浙江图维科技股份有限公司 Tunnel settlement alarm system and method based on lens group

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080007724A1 (en) * 2006-07-10 2008-01-10 Wing Yeung Chung Rail Vehicle Mounted Rail Measurement System
CN101373132A (en) * 2008-09-24 2009-02-25 北京交通大学 Apparatus and method for remotely measuring subgrade settlement by laser
CN106092056A (en) * 2016-06-28 2016-11-09 中国人民解放军国防科学技术大学 A kind of vehicle-mounted dynamic monitoring method of high-speed railway bridge foundation settlement deformation
CN208109075U (en) * 2018-01-16 2018-11-16 江苏建纬检测股份有限公司 A kind of subgrade settlement detection device based on laser

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080007724A1 (en) * 2006-07-10 2008-01-10 Wing Yeung Chung Rail Vehicle Mounted Rail Measurement System
CN101373132A (en) * 2008-09-24 2009-02-25 北京交通大学 Apparatus and method for remotely measuring subgrade settlement by laser
CN106092056A (en) * 2016-06-28 2016-11-09 中国人民解放军国防科学技术大学 A kind of vehicle-mounted dynamic monitoring method of high-speed railway bridge foundation settlement deformation
CN208109075U (en) * 2018-01-16 2018-11-16 江苏建纬检测股份有限公司 A kind of subgrade settlement detection device based on laser

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
张彦彦 等: "路基表面沉降光学测量方法的研究", 《路桥科技》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113551642A (en) * 2021-03-24 2021-10-26 中电建路桥集团有限公司 Sedimentation control monitoring system in construction of complex soft foundation roadbed of highway
CN113551642B (en) * 2021-03-24 2023-03-10 中电建路桥集团有限公司 Sedimentation control monitoring system in complex soft foundation subgrade construction of highway
CN115031684A (en) * 2022-04-25 2022-09-09 浙江图维科技股份有限公司 Tunnel settlement alarm system and method based on lens group
CN115031684B (en) * 2022-04-25 2024-04-09 浙江图维科技股份有限公司 Tunnel settlement alarm system and method based on lens group

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