CN107421622A - A kind of monitoring of railway falling rocks and localization method - Google Patents
A kind of monitoring of railway falling rocks and localization method Download PDFInfo
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- CN107421622A CN107421622A CN201710566896.3A CN201710566896A CN107421622A CN 107421622 A CN107421622 A CN 107421622A CN 201710566896 A CN201710566896 A CN 201710566896A CN 107421622 A CN107421622 A CN 107421622A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
- G01H1/12—Measuring characteristics of vibrations in solids by using direct conduction to the detector of longitudinal or not specified vibrations
-
- 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
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
- G01S5/22—Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements
Abstract
A kind of monitoring of railway falling rocks and localization method, home server and the multiple microseism positioning subsystems arranged along railway are set at the side slope of methods described along the railway, and each microseism positioning subsystem includes the multi-channel data acquisition module being connected by synchronous firing line and data line with home server and four microseismic sensors being connected with the input of multi-channel data acquisition module；The home server sends synchronizing signal by synchronous firing line to each microseism positioning subsystem, the microseism information of each microseism positioning subsystem collection is received by data line, focal shock parameter is then calculated according to microseism information and focal shock parameter is uploaded to by Surveillance center by Ethernet.Present invention shock wave according to caused by the falling rocks shock ground that multiple microseismic sensors collect calculates the coordinate of focal point, have the advantages that monitoring device is simple in construction, cost is cheap, convenient for installation and maintenance, strong antijamming capability, the relevant personnel can be helped to find and exclude in time potential safety hazard.
Description
Technical field
The present invention relates to a kind of method that can carry out monitoring and positioning in real time to the falling rocks of Along Railway side slope, belong to monitoring
Technical field.
Background technology
Side slope rockfall be always threaten railway transportation a big potential safety hazard, the larger falling rocks crashed on railway or its
If its object is handled not in time, locomotive and related personnel will be damaged, therefore the rockfall of Along Railway is carried out
Monitor and position in real time and be significant.
Lot of domestic and international scholar has carried out numerous studies for this problem, up to the present, to railway both sides falling rocks
Monitoring method mainly has following several：
(1) GPS location method:It is monitored using global position system, its shortcoming is that plant maintenance workload is big, distinguishingly
Domain can not obtain signal, and high-accuracy position system price is high, therefore can not large-scale promotion application；
(2) video imaging method:It is monitored using the method for outdoor pick-up, although methods described comparison is directly perceived, is easy to
Influenceed by mist and sleety weather, antijamming capability is poor, it is difficult to adapt to the geological environment of complexity；
(3) fibre grating method:Although the volume production of the monitoring device based on fiber grating sensing technology, its system into
This and maintenance cost are higher.
In summary, there is many weak points in existing falling rocks monitoring method and monitoring device, it is necessary to be changed
Enter.
The content of the invention
It is an object of the invention to the drawback for prior art, there is provided a kind of equipment operation is simple and direct, it is easy to maintain and
The falling rocks monitoring of strong antijamming capability and localization method, with the potential safety hazard for finding in time and excluding railway transportation.
Problem of the present invention is that solved with following technical proposals：
A kind of monitoring of railway falling rocks and localization method, home server is set at the side slope of methods described along the railway
With the multiple microseism positioning subsystems arranged along railway, each microseism positioning subsystem includes passing by synchronous firing line and data
Multi-channel data acquisition module that defeated line is connected with home server and it is connected with the input of multi-channel data acquisition module
Four microseismic sensors；The home server sends synchronizing signal by synchronous firing line to each microseism positioning subsystem, leads to
The microseism information that data line receives each microseism positioning subsystem collection is crossed, focal shock parameter is then calculated according to microseism information
And focal shock parameter is uploaded to by Surveillance center by Ethernet.
The monitoring of above-mentioned railway falling rocks and localization method, the collection of microseism information and the calculation procedure of focal shock parameter are as follows：
A. after home server receives the acquisition that Surveillance center sends by Ethernet, by synchronous firing line to
The multi-channel data acquisition module of each microseism positioning subsystem sends synchronizing signal, and multi-channel data acquisition module receives together
The microseism information of each microseismic sensors of synchronous acquisition output and the data of collection are uploaded to by data line after step signal
Home server；
B. home server travels through the data for all microseismic sensors collection that each microseism positioning subsystem is passed back, Cong Zhongxuan
Go out four groups of data of vibration responding amplitude maximum；
C. rectangular coordinate system is established in the plane of microseismic sensors arrangement, if four groups of data of vibration responding amplitude maximum
Four corresponding microseismic sensors are respectively S1、S2、S3And S4, their coordinate is respectively (x1,y1),(x2,y2),(x3,y3)
(x4,y4), home server obtains focal point A (x using the end-point detecting method based on time-frequency variance sum0, y0) sent
The ripple that vibration signal travels to four microseismic sensors reaches the moment, and note vibration signal travels to S1、S2、S3And S4Ripple reach the moment
For t1、t2、t3、t4；
D. equation group is established：
Wherein, vpFor the spread speed of microseism ripple in monitor area, t0For the landing moment of falling rocks, above-mentioned equation group is solved i.e.
It can obtain the coordinate A (x of focal point0, y0)。
The monitoring of above-mentioned railway falling rocks and localization method, focus is obtained using the end-point detecting method based on time-frequency variance sum
Point A (x0, y0) vibration signal that the is sent ripple that travels to four microseismic sensors is up to the specific method at moment：
Framing is carried out to the vibration signal of each microseismic sensors first, then tries to achieve the short-time energy of each frame signal respectively
Time-frequency variance and, when time-frequency variance and during more than a certain threshold value, that is, judge that the point corresponds to the moment and reached for the ripple of microseismic sensors
Moment.
The monitoring of above-mentioned railway falling rocks and localization method, four microseismic sensors of each microseism positioning subsystem are pacified respectively
On four summits of rectangular area and it is symmetrically distributed in the both sides of railway.
The monitoring of above-mentioned railway falling rocks and localization method, the spacing between the adjacent microseism positioning subsystem of any two is not
More than 30m.
Present invention shock wave according to caused by the falling rocks shock ground that multiple microseismic sensors collect calculates focal point
Coordinate, have the advantages that monitoring device is simple in construction, cost is cheap, convenient for installation and maintenance, strong antijamming capability, can help
Pass personnel have found and excluded in time potential safety hazard, ensure the safety of railway transportation.
Brief description of the drawings
Fig. 1 is the system principle schematic diagram of the present invention；
Fig. 2 is the scheme of installation of microseism positioning subsystem；
Fig. 3 is the scheme of installation of microseism positioning subsystem in embodiment；
Fig. 4 is the selection schematic diagram of four microseismic sensors.
In figure respectively marked as：1st, multi-channel data acquisition module and home server (being installed together), 2, side slope, 3, fall
Stone, 4, cable.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Referring to Fig. 2 and Fig. 3, the falling rocks monitoring positioning device used in the present invention includes home server, synchronous firing line, number
According to transmission line and microseism positioning subsystem.Wherein, microseism positioning subsystem includes multi-channel data acquisition module with forming microseism
Four microseism wave detector s of detector array1、s2、s3、s4.Four microseismic sensors are fixed on the both sides of railway and are located at respectively
On four summits of rectangular area.Microseismic sensors s1、s2、s3、s4Pass through data cable with multi-channel data acquisition module
Connection.Multi-channel data acquisition module is connected with home server by data line and synchronous firing line.Multi-channel data
Acquisition module is laid in railway side home with home server.
In fig. 2, the first microseismic sensors s1With the second microseismic sensors s2Apart 15 meters, the first microseismic sensors s1With
4th microseismic sensors s3Apart 30 meters (can be made the appropriate adjustments during concrete application in allowed band), data transfer electricity during installation
Cable is connected to the input of multi-channel data acquisition module after being passed through below rail.Multi-channel data acquisition module takes with local
Business device is bolted on the home near railway, and the main function of home server is to carry out analysis calculating to data
With transmission.
In Fig. 1, when falling rocks monitoring positioning device works, the signal that Surveillance center sends sends local to by Ethernet
Server, synchronizing signal caused by home server make each multi-channel data acquisition module by synchronous firing line while produced
Trigger signal, each microseism detector array synchronously start gathered data.
When larger rockfall 3 or other objects fall to the rectangle region of a certain microseism detector array covering from side slope 2
When in domain or between the rectangular area of certain two microseism detector array covering, road shock, each microseism sensing will be caused
Device collects and transfers data to multi-channel data acquisition module, each multichannel by data cable 4 after vibration signal
Data acquisition module sends data summarization to home server, and home server first travels through each group of data, selects vibrations and rings
Four groups of data that peak value is maximum are answered, hypocentral location is then calculated by microseism localization method, and by hypocentral location remote data
It is sent to Surveillance center.
The present invention can to around railway rockfall carry out in real time, be accurately positioned.Used microseismic sensors spirit
Sensitivity is high, and reaction speed is fast.Microseism positioning subsystem is designed to increase number of sensors according to monitoring range size
Subtract, there is good economy and adaptability.
The present invention is verified by the following examples.
The present invention realizes practical application on Shuohuang Railway, and system for field arrangement (is limited in map sheet figure only as shown in Figure 3
Include 2 sets of falling rocks monitoring subsystems).Whole falling rocks monitored area is by 6 sets of falling rocks monitoring subsystems, multi-channel data acquisition module
Coordinate the falling rocks locating and monitoring of the whole monitored area of completion.Railway side sensor number is odd number, opposite side sensor number
For even number, coordinate is in the microseismic sensors position for being S1 using numbering in multiple microseism positioning subsystems of downline arrangement
Origin, using cross origin parallel to rail orientation sensor S4 direction as X-axis, using cross origin sensor S1 orientation sensors S2 as
Y-axis establishes plane right-angle coordinate.As shown in Figure 3.Wherein the first microseismic sensors s1With the second microseismic sensors s2At a distance of 15
Rice, the first microseismic sensors s1With the 3rd microseismic sensors s3Apart 30 meters, the 3rd microseismic sensors s3With the 5th microseismic sensors
s5At a distance of 30 meters, arrangement that the rest may be inferred.
As shown in figure 3, multi-channel data acquisition module receives the synchronous acquisition letter that Railway Site home server is sent
Start the microseism information of each microseismic sensors output of synchronous acquisition after number, and be uploaded to the data of collection by data line
Home server.Home server travels through the data for all microseismic sensors collection that each microseism positioning subsystem is passed back, therefrom
Select four groups of data s of vibration responding amplitude maximum1、s2、s3、s4, as shown in Figure 4.Their coordinate is respectively (0m, 0m),
(0m, 15m), (30m, 0m) and (30m, 15m), home server obtain shake using the end-point detecting method based on time-frequency variance sum
Source point A (x0, y0) (scene artificial Measured Coordinates be (3.75m, 3.75m)) vibration signal for being sent travels to four microseisms biographies
Sensor s3、s4、s5、s6Ripple up to the moment be t3=4.9380s, t4=4.9700s, t5=5.0645s, t6=5.0550s.
Pass through following algorithm：
Wherein, vpFor the spread speed of microseism ripple in monitor area, t0For the landing moment of falling rocks, solve above-mentioned equation group and obtain
To the coordinate A (3.90m, 4.07m) of focal point.It is that 4.02%, y directions position error is 8.62% to calculate x directions position error.
The pilot system measurement shows that the inventive method computational accuracy meets to require.
Claims (5)
1. monitoring and the localization method of a kind of railway falling rocks, it is characterized in that, this is set at the side slope of methods described along the railway
Ground server and the multiple microseism positioning subsystems arranged along railway, each microseism positioning subsystem include passing through synchronous firing line
The multi-channel data acquisition module being connected with data line with home server and the input with multi-channel data acquisition module
Four connected microseismic sensors of end；The home server is sent synchronous by synchronous firing line to each microseism positioning subsystem
Signal, the microseism information of each microseism positioning subsystem collection is received by data line, is then calculated according to microseism information
Focal shock parameter is simultaneously uploaded to Surveillance center by focal shock parameter by Ethernet.
2. monitoring and the localization method of a kind of railway falling rocks according to claim 1, it is characterized in that, the collection of microseism information
And the calculation procedure of focal shock parameter is as follows：
A. after home server receives the acquisition that Surveillance center sends by Ethernet, by synchronous firing line to each
The multi-channel data acquisition module of microseism positioning subsystem sends synchronizing signal, and multi-channel data acquisition module receives synchronous letter
The microseism information of each microseismic sensors of synchronous acquisition output and the data of collection are uploaded to by local by data line after number
Server；
B. home server travels through the data for all microseismic sensors collection that each microseism positioning subsystem is passed back, therefrom selects shake
Four groups of data of dynamic response amplitude maximum；
C. rectangular coordinate system is established in microseismic sensors plane of arrangement, if corresponding to four groups of data of vibration responding amplitude maximum
Four microseismic sensors be respectively S1、S2、S3And S4, their coordinate is respectively (x1,y1),(x2,y2),(x3,y3) and (x4,
y4), home server obtains focal point A (x using the end-point detecting method based on time-frequency variance sum0, y0) sent vibrations letter
The ripple for number traveling to four microseismic sensors reaches the moment, and note vibration signal travels to S1、S2、S3、S4Ripple up to the moment be t1、t2、
t3、t4；
D. equation group is established：
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Wherein, vpFor the spread speed of microseism ripple in monitor area, t0For the landing moment of falling rocks, solving above-mentioned equation group can obtain
To the coordinate A (x of focal point0, y0)。
3. monitoring and the localization method of a kind of railway falling rocks according to claim 2, it is characterized in that, using based on time-frequency side
The end-point detecting method of poor sum obtains focal point A (x0, y0) vibration signal that is sent travels to the ripples of four microseismic sensors and reach
The specific method at moment is：
Framing is carried out to the vibration signals of each microseismic sensors first, then try to achieve respectively each frame signal short-time energy when
Frequency variance and, when time-frequency variance and during more than a certain threshold value, that is, judge that the point corresponds to the moment and reaches the moment for the ripple of microseismic sensors.
4. monitoring and the localization method of a kind of railway falling rocks according to claim 3, it is characterized in that, each microseism locator
Four microseismic sensors of system are separately mounted on four summits of rectangular area and are symmetrically distributed in the both sides of railway.
5. monitoring and the localization method of a kind of railway falling rocks according to claim 4, it is characterized in that, any two is adjacent
Spacing between microseism positioning subsystem is no more than 30m.
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Cited By (5)
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| CN108896046A (en) * | 2018-04-28 | 2018-11-27 | 石家庄铁道大学 | Falling rocks positioning system and measurement method |
| CN109612670A (en) * | 2018-12-07 | 2019-04-12 | 石家庄铁道大学 | A kind of protective net monitoring method, system and terminal device |
| CN110095176A (en) * | 2019-03-29 | 2019-08-06 | 石家庄铁道大学 | A kind of safety monitoring slope method, system and terminal device |
| CN112946735A (en) * | 2021-02-23 | 2021-06-11 | 石家庄铁道大学 | Rockfall impact positioning method and device based on micro-seismic monitoring system |
| CN113240888A (en) * | 2021-07-13 | 2021-08-10 | 湖南华诺星空电子技术有限公司 | Multi-rockfall early warning radar partition networking cooperative monitoring system and method |
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| CN112946735A (en) * | 2021-02-23 | 2021-06-11 | 石家庄铁道大学 | Rockfall impact positioning method and device based on micro-seismic monitoring system |
| CN113240888A (en) * | 2021-07-13 | 2021-08-10 | 湖南华诺星空电子技术有限公司 | Multi-rockfall early warning radar partition networking cooperative monitoring system and method |
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Application publication date: 20171201 |
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