CN105946897A - Railway tunnel limit dynamic detecting system and method based on laser-scanning range finders - Google Patents
Railway tunnel limit dynamic detecting system and method based on laser-scanning range finders Download PDFInfo
- Publication number
- CN105946897A CN105946897A CN201610532113.5A CN201610532113A CN105946897A CN 105946897 A CN105946897 A CN 105946897A CN 201610532113 A CN201610532113 A CN 201610532113A CN 105946897 A CN105946897 A CN 105946897A
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- China
- Prior art keywords
- railway tunnel
- laser scanning
- ranging instrument
- laser
- tunnel section
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/08—Measuring installations for surveying permanent way
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
Abstract
The invention provides a railway tunnel limit dynamic detecting system and method based on laser-scanning range finders. The system comprises a plurality of laser-scanning range finders and an upper computer, wherein the plurality of the laser-scanning range finders are separately mounted at different positions on the same railway tunnel section inside a vehicle body of a railway tunnel limit detecting vehicle; and each laser-scanning range finder is connected with the upper computer through the Ethernet. The method comprises the following steps: obtaining different position signals of the same railway tunnel section in real time; calculating a distance from a center point of a steel rail plane to a measuring point according to a distance from the center of the corresponding laser-scanning range finder to the measuring point of the railway tunnel section; storing the distances and the angles from the center point of the steel rail plane to different measuring points of the same railway tunnel section; and generating an image of each railway tunnel section. The laser-scanning range finders can be used for simultaneously detecting different positions on the same section of the tunnel wall, so that the whole tunnel wall is covered; and laser beams emitted by the laser-scanning range finders can cover a 360-degree limit measuring range of the tunnel outline.
Description
Technical field
The present invention relates to Tunnel testing technical field, be specifically related to a kind of railway tunnel gauge dynamic detection system based on laser scanning and ranging instrument and method.
Background technology
The safety run on rail track in order to ensure rolling stock, prevents rolling stock from clashing into the building of adjacent lines and equipment, and to rolling stock with close to the building of circuit, the overall size line not allowing to surmount of equipment defined, referred to as gauge.In railway " skill rule ", it is made that clear stipulaties especially: all buildings, equipment, the most all must not invade the track clearance of railway.The accuracy that railroad clearance is measured is particularly significant, is directly connected to railway and expands safety and the growth of revenue from transportation of goods transport.Some section gauge dimensional measurement in the past is inaccurate, causes some to expand goods transport and must detour or refuse fortune, causes the waste of railway transport capacity and the loss of revenue from transportation.
The form of the geographical form around rail track, Form of Architecture, even circuit itself the most all can occur change in various degree.In the past, railroad clearance is used mostly the manual method such as " lifting rope ", " feeler lever ", " tape measure " such as and measures, wastes time and energy, and certainty of measurement is low.Along with electrified railway lines develops rapidly, traditional measurement means cannot adapt to quick, accurate, safe track clearance testing requirement；Hand-held laser scanning and ranging instrument can realize non-contact measurement, but simply spot measurement, poor continuity, and datum mark cannot be fixed；Tunnel testing car measuring speed is fast, precision is higher, but is only applicable to bridge tunnel clearance survey, and takies cost of transportation, and equipment manufacturing cost is expensive.For present status in China, it is badly in need of a kind of novel railroad clearance measuring tool, it is possible to economical, convenient, accurately, flexibly different kinds of railways track clearance is measured, escorts safely for railway production and transport.
Summary of the invention
It is an object of the invention to provide a kind of railway tunnel gauge dynamic detection system based on laser scanning and ranging instrument and method.
The technical scheme is that
A kind of railway tunnel gauge dynamic detection system based on laser scanning and ranging instrument, including multiple stage laser scanning and ranging instrument and the host computer of each laser scanning and ranging instrument signal of collection；Multiple stage laser scanning and ranging instrument is separately mounted to the diverse location of railway tunnel clearance car vehicle body same railway tunnel section；Each laser scanning and ranging instrument is connected with host computer by Ethernet.
Described host computer includes laser scanning and ranging signal gathering unit, distance transform unit, data storage cell, scanning and imaging unit；
Laser scanning and ranging signal gathering unit: obtain each laser scanning and ranging instrument signal in real time；
Distance transform unit: measure, according to the laser scanning and ranging instrument center that laser scanning and ranging instrument records, the distance put to railway tunnel section, converse the rail planar central point distance to this measurement point；
Data storage cell: with the numbering name of railway tunnel section, be a memory cycle with 360 °, the distance of storage rail planar central point to same railway tunnel section different measuring point and angle；
Scanning and imaging unit: according to the imaging of each railway tunnel section of data genaration of data storage cell storage.
Railway tunnel gauge dynamic detection system described in utilization carries out the method that railway tunnel gauge dynamically detects, including:
In railway tunnel clearance car traveling process, each laser scanning and ranging instrument obtains the diverse location signal of same railway tunnel section in real time；
Measure, according to the laser scanning and ranging instrument center that laser scanning and ranging instrument records, the distance put to railway tunnel section, converse the rail planar central point distance to this measurement point；
With the numbering name of railway tunnel section, it is a memory cycle with 360 °, the distance of storage rail planar central point to same railway tunnel section different measuring point and angle；
The imaging of each the railway tunnel section of data genaration according to storage.
Beneficial effect:
1, laser scanning and ranging instrument detects Tunnel wall same section diverse location simultaneously, it is ensured that cover full Tunnel wall；
2, the laser beam that laser scanning and ranging instrument is launched just can cover the clearance survey scope of tunnel contour 360 °；
3, use high-precision laser scanning rangefinder, coordinate host computer, non-contact measurement and data analysis can be carried out by track clearances various to railway.
4, a whole set of detecting system is easy to carry, simple to operate, and certainty of measurement is high, and railway expands the great significance of goods transport.
Accompanying drawing explanation
Fig. 1 is the railway tunnel gauge dynamic detection system structured flowchart based on laser scanning and ranging instrument of the specific embodiment of the invention；
Fig. 2 is the railway tunnel gauge dynamic testing method flow chart of the specific embodiment of the invention；
Fig. 3 is the laser scanning and ranging instrument measuring principle of the specific embodiment of the invention；
Fig. 4 is the imaging of the railway tunnel section of the specific embodiment of the invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is elaborated.
A kind of railway tunnel gauge dynamic detection system based on laser scanning and ranging instrument, as it is shown in figure 1, include multiple stage laser scanning and ranging instrument and gather the host computer of each laser scanning and ranging instrument signal；Multiple stage laser scanning and ranging instrument is separately mounted to the diverse location of railway tunnel clearance car vehicle body same railway tunnel section；Each laser scanning and ranging instrument is connected with host computer by Ethernet.
Host computer includes laser scanning and ranging signal gathering unit, distance transform unit, data storage cell, scanning and imaging unit；
Laser scanning and ranging signal gathering unit: obtain each laser scanning and ranging instrument signal in real time；
Distance transform unit: measure, according to the laser scanning and ranging instrument center that laser scanning and ranging instrument records, the distance put to railway tunnel section, converse the rail planar central point distance to this measurement point；
Data storage cell: with the numbering name of railway tunnel section, be a memory cycle with 360 °, the distance of storage rail planar central point to same railway tunnel section different measuring point and angle；
Scanning and imaging unit: according to the imaging of each railway tunnel section of data genaration of data storage cell storage.
The input of laser scanning and ranging signal gathering unit connects the outfan of laser scanning and ranging instrument, the outfan of laser scanning and ranging signal gathering unit connects the input of distance transform unit, the outfan of distance transform unit connects the input of data storage cell, and the outfan of data storage cell connects the input of scanning and imaging unit.
Railway tunnel gauge dynamic detection system is utilized to carry out the method that railway tunnel gauge dynamically detects, as in figure 2 it is shown, include:
In step 1, railway tunnel clearance car traveling process, each laser scanning and ranging instrument obtains the diverse location signal of same railway tunnel section in real time；
Step 2, the laser scanning and ranging instrument center recorded according to laser scanning and ranging instrument measure the distance of point to railway tunnel section, converse the rail planar central point distance to this measurement point；
What this method was carried out is that two-dimensional space is measured, and i.e. measures the horizontal range put with rail planar central and vertical dimension.As it is shown on figure 3, A is laser scanning and ranging instrument central point, O is rail planar central point, and B is target measurement point.Laser scanning and ranging instrument records a length of L of AB, and angle is α, then B point is relative to the horizontal range m=L × cos α of A point, vertical dimension n=L × sin α.Laser scanning, laser scanning and ranging instrument central point is 247.5 millimeters away from rail plane vertical height, being 747.5 millimeters with rail central horizontal distance, such that it is able to show that O point horizontal range between B point is m-747.5 millimeter, vertical dimension is n+247.5 millimeter.
Step 3, with the numbering name of railway tunnel section, be a memory cycle with 360 °, storage rail planar central point is to the distance of same railway tunnel section different measuring point and angle；
Laser scanning and ranging instrument passes through Ethernet and Hostlink, and message transmission rate reaches as high as 10Mbit/s, and carries communications protocol, facilitates user program.
Step 4, the imaging of each railway tunnel section of data genaration according to storage, as shown in Figure 4.Host computer with VB6.0 as platform, can real time scan imaging, and do data storage.
Claims (3)
1. a railway tunnel gauge dynamic detection system based on laser scanning and ranging instrument, it is characterised in that include multiple stage laser scanning and ranging instrument and gather the host computer of each laser scanning and ranging instrument signal；Multiple stage laser scanning and ranging instrument is separately mounted to the diverse location of railway tunnel clearance car vehicle body same railway tunnel section；Each laser scanning and ranging instrument is connected with host computer by Ethernet.
Railway tunnel gauge dynamic detection system based on laser scanning and ranging instrument the most according to claim 1, it is characterised in that described host computer includes laser scanning and ranging signal gathering unit, distance transform unit, data storage cell, scanning and imaging unit；
Laser scanning and ranging signal gathering unit: obtain each laser scanning and ranging instrument signal in real time；
Distance transform unit: measure, according to the laser scanning and ranging instrument center that laser scanning and ranging instrument records, the distance put to railway tunnel section, converse the rail planar central point distance to this measurement point；
Data storage cell: with the numbering name of railway tunnel section, be a memory cycle with 360 °, the distance of storage rail planar central point to same railway tunnel section different measuring point and angle；
Scanning and imaging unit: according to the imaging of each railway tunnel section of data genaration of data storage cell storage.
3. utilize the railway tunnel gauge dynamic detection system described in claim 2 to carry out the method that railway tunnel gauge dynamically detects, it is characterised in that to include:
In railway tunnel clearance car traveling process, each laser scanning and ranging instrument obtains the diverse location signal of same railway tunnel section in real time；
Measure, according to the laser scanning and ranging instrument center that laser scanning and ranging instrument records, the distance put to railway tunnel section, converse the rail planar central point distance to this measurement point；
With the numbering name of railway tunnel section, it is a memory cycle with 360 °, the distance of storage rail planar central point to same railway tunnel section different measuring point and angle；
The imaging of each the railway tunnel section of data genaration according to storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610532113.5A CN105946897A (en) | 2016-07-07 | 2016-07-07 | Railway tunnel limit dynamic detecting system and method based on laser-scanning range finders |
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| CN201610532113.5A CN105946897A (en) | 2016-07-07 | 2016-07-07 | Railway tunnel limit dynamic detecting system and method based on laser-scanning range finders |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110609294A (en) * | 2019-10-21 | 2019-12-24 | 北京经纬信息技术有限公司 | Clearance measuring instrument, clearance measuring system and measuring method |
| CN112525092A (en) * | 2018-09-19 | 2021-03-19 | 成都理工大学 | Tunnel construction monitoring system |
| CN112678023A (en) * | 2021-01-04 | 2021-04-20 | 天津路安工程咨询有限公司 | Rail transit clearance detection device and detection method |
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| CN112678023A (en) * | 2021-01-04 | 2021-04-20 | 天津路安工程咨询有限公司 | Rail transit clearance detection device and detection method |
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Application publication date: 20160921 |
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