CN110296659A - A kind of railway rail pad system for monitoring displacement and method based on image recognition processing - Google Patents
A kind of railway rail pad system for monitoring displacement and method based on image recognition processing Download PDFInfo
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
Abstract
The invention discloses a kind of railway rail pad system for monitoring displacement based on image recognition processing, it includes monitoring device, the information transmission system and terminal, monitoring device is built in rail side, it includes image identification unit, processor unit, storage unit, power supply unit and warning device, image identification unit includes optical lens and imaging sensor, optical lens passes to processor unit after the image of shooting is carried out data conversion by imaging sensor, processing result is stored in storage unit, terminal is sent to by the information transmission system simultaneously, control warning device is warned after processing result is more than given threshold；Power supply unit provides electric energy.The purpose of the present invention is, a kind of railway rail pad system for monitoring displacement and method based on image recognition processing is provided, the monitoring system is used for railway rail pad real-time displacement monitoring, key position data are analyzed, early warning, report, the reliability of rail vehicle transportation is improved, the workload of work business personnel is reduced.
Description
Technical field
The invention belongs to rail traffic monitoring device technical field, specially a kind of rail underlay based on image recognition processing
Plate system for monitoring displacement and method.
Background technique
Rail traffic refers to a kind of vehicles or transportation system that vehicle in use needs to travel in certain tracks, most allusion quotation
The rail traffic of type is exactly the railway system as composed by traditional train and standard railroad.It is polynary with train and railway technology
Change development, rail traffic shows more and more types, be not only dispersed throughout the land transport of long range, is also widely used in
In short-range urban public transport.In recent years, China Railway High-speed is in the fast-developing phase, and country builds high iron wire energetically
Road, purpose are exactly to accelerate, promote each intercity economic development, and at the same time, this brings numerous new to rail safety
Challenge.
It is well known that track generates deformation and displacement due to expanding with heat and contract with cold, showed under the biggish environment of temperature especially bright
It is aobvious.However the displacement it is larger when, drive the backing plate under its rail to move together, which plays positioning, buffering, insulation etc. to track
Effect, if there is larger sliding, cause track loosen etc., this be to traffic safety it is unfavorable, especially in rail spur
Locate the weak area that equistability is not good enough on (lateral compression power is big) or bridge, great threat is constituted to the safe passing of train, it is right
This, railway department spends a large amount of work business personnel to carry out personal monitoring, most important drawback, on the one hand manually by visually come into
Row judgement, there are deviations, tend not to the displacement situation that real time reaction goes out the backing plate, such as: to somewhere when trackwalker sets out morning
Field observation is carried out, does not find that backing plate has a larger displacement, is observed again at this when returning at night, due to morning and evening
The temperature difference is few, and the displacement situation of the backing plate is identical, and when not finding noon temperature highest, the biggish position which then occurs
It moves, which is not just observed, and there are great security risks；On the other hand with more and more, the driving of railway line
Speed is getting faster, it is necessary to constantly be put into more manpower and material resources and be monitored and safeguard accordingly to carry out, will certainly increase
Add operation cost, therefore, which solves.
Found by retrieval, the patent document of Publication No. CN201010272150.X disclose it is a kind of by communication system,
The rail that computer system, displacement sensor, vibrating sensor, laser distance detector, microprocessor and communication module are realized
Road on-line monitoring method and track Online Transaction Processing, being capable of variation, the variation of level, track to track relative spacing
Fastening facilities variation, track interior cracks and deformation is monitored on-line, has monitoring real-time good, to sudden track
Parameters variation can find and alarm in time, test job amount and feature at low cost.The Online Transaction Processing is related to big
Sensor, microprocessor of amount etc., uneconomical, detection is complex, promotes more difficult.
Summary of the invention
The purpose of the present invention is in view of the above problems, providing a kind of railway rail pad displacement monitoring based on image recognition processing
System, the monitoring system are used for railway rail pad real-time displacement monitoring, and vibration and displacement of also expansible monitoring track etc. are comprehensive
Status data, completion analyzes key position data, early warning, report, improves the reliability of rail vehicle transportation, reduces iron
The workload of road work business personnel.
At the same time, a kind of railway rail pad displacement monitoring method based on image recognition processing is also disclosed.
In order to achieve the above object, the technical solution adopted by the present invention is that: a kind of railway rail pad based on image recognition processing
System for monitoring displacement, it includes monitoring device, the information transmission system and terminal, and the monitoring device is built in rail side, packet
Include image identification unit, processor unit, storage unit, power supply unit and the warning device of electric connection, described image identification
Unit includes connected optical lens and imaging sensor, and the image of shooting is carried out data by imaging sensor by optical lens
Processor unit processing is passed to after conversion, processing result is stored in storage unit, while being sent by the information transmission system
To terminal, and after processing result is more than given threshold, control warning device is warned；Said supply unit is image knowledge
Other unit, processor unit and warning device provide electric energy.
Further, described image recognition unit is equipped with infrared light compensating lamp.
Further, said supply unit using solar energy photovoltaic system power, the solar energy photovoltaic system include according to
Solar panel, charge controller and the rechargeable battery of secondary electric connection, the rechargeable battery respectively with image identification unit,
Processor unit and warning device are electrically connected.
Further, the warning device is the alarm bell or combined aural and visual alarm being connected with processor unit.
Further, the information transmission system is WiFi module, GPRS communication module or 3G/4G network module.
Further, the terminal is PC or mobile phone.
Further, the monitoring device is set to rail bifurcated, railway bridge, railway tunnel side.
Using the monitoring method of the above-mentioned railway rail pad system for monitoring displacement based on image recognition processing, including following step
It is rapid:
Step A, field calibration: monitoring device is set to rail side, adjusts best shooting angle, and treats prison after powering
Location, which is set, carries out calibration of taking pictures, and obtains test object initial position characteristic value, is calibrating template, sets calibration point change in location mark
Quasi- threshold value, and be stored in storage unit；
Step B, data acquisition compares, analysis is handled:
A, calibration point A (x is found in calibrating template T (m, n) picture1,y1)；
B, calibrating template T (m, n) is overlayed translates on searched figure S (W, H), searches for subgraph, search range is: 1≤i≤
W-n, 1≤j≤H-m, according to the following formula measure T andSimilitude:
Above formula is normalized, the related coefficient of template matching is obtained:
When calibrating template is as searched figure, coefficient R (i, j)=1, after completing all search in searched figure S,
Find out the maximum value of R, corresponding subgraphTarget is as matched, in subgraphMiddle searching position hair
The raw calibration point A'(x changed2,y2)；It is averaged by multiple multi-target detection, calculates template T (m, n) and subgraph
In corresponding calibration point A, A' two o'clock mean deviation amount Offset(x2-x1,y2-y1)；
In formula:--- template covers the region of searched subgraph, and i, j are coordinate of the subgraph lower left corner on searched figure S；
C, realistic objective displacement is calculated according to the pixel δ ratio of image identification unit, practical corresponding X-direction shift differences are (x2-
x1) * δ, Y-direction shift differences are (y2-y1)*δ；
The threshold value set when if d, practical corresponding X, Y-direction shift value being more than initial, is marked, in advance the pictorial information
Alert, control warning device is warned；
Step C, monitoring result is distributed: processor unit sends the analysis result in step B to respectively by the information transmission system
A terminal；
Step D, real-time monitoring: repeat the above steps B, C, sets sample frequency, and interval carries out Image Acquisition to scene, divides
Analysis, and it is distributed to terminal in real time.
Further, the information transmission system passes through WiFi module, GPRS communication module, 3G/4G network mould in the step C
One or more of block is distributed to terminal.
Beneficial effects of the present invention: the monitoring device is used for the displacement data of real-time monitoring railway rail pad, also expansible prison
Survey the vibration and the comprehensive states data such as displacement of track, completion analyzes key position data, early warning, report, improves rail
The reliability of road communications and transportation reduces the workload of railway personnel.
1, railway rail pad monitoring position remote assistant device is simple with structure in the present invention, small in volume, is convenient for
Moment observation railway rail pad position, it is easy to use, have a wide range of application, safety is good, reliability is high, adapts to the Environmental strong, service life
The features such as long.
2, monitoring device of the invention can operate in monitoring any structure for relative displacement occur of railroad track, such as monitor
The relative displacement variation of switch structure tongue and stock rail, high-speed railway fastener change in location etc. on steep gradient ensure railway fortune
Defeated safety.
3, it only needs to demarcate point to be monitored when monitoring system processes data of the invention, quickly carries out feature location, return
Feature location with recalls information as a result, system has the point after automatic identification change in location, have it is quick, simple, accurate,
It is convenient, automatic, can remote computation the features such as, for the method relative to other methods, the subgraph evaluation of estimate searched is higher, makes feature
The accuracy rate of positioning result is good enough, and the complexity of method is lower, can quickly search subgraph, and user is allowed timely to obtain
To feature location result；Computer capacity is extensive, can calculate multiple calibration points simultaneously, and can avoid the influence of other components displacement.
Detailed description of the invention
Fig. 1 is monitoring device of the present invention and track installation relation schematic diagram.
Fig. 2 is partial enlargement structural representation at A in Fig. 1 of the present invention.
Fig. 3 is present invention monitoring system module annexation figure.
Fig. 4 is present invention monitoring working-flow figure.
Fig. 5 is that figure is captured in present invention monitoring system for field monitoring.
Label character described in figure indicates are as follows: 1, image identification unit；2, processor unit；3, storage unit；4, it powers
Unit；5, warning device；6, track plates；7, sleeper；8, rail；9, backing plate.
Specific embodiment
In order to make those skilled in the art more fully understand technical solution of the present invention, with reference to the accompanying drawing to the present invention into
Row detailed description, the description of this part be only it is exemplary and explanatory, should not have any limitation to protection scope of the present invention
Effect.
As shown in Figs. 1-5, a kind of specific structure of the invention are as follows: railway rail pad displacement monitoring based on image recognition processing
System, it includes monitoring device, the information transmission system and terminal, and the monitoring device is built in rail side comprising is electrically connected
Acousto-optic warning can be used in image identification unit 1, processor unit 2, storage unit 3, power supply unit 4 and the warning device 5(connect
Device), described image recognition unit 1 includes connected optical lens and imaging sensor (preferably using ccd image sensor), light
It learns camera lens and handles the image of shooting by passing to processor unit 2 after imaging sensor progress data conversion, processing result
It is stored in storage unit 3, while terminal is sent to by the information transmission system, and after processing result is more than given threshold
Control warning device 5 is warned；Said supply unit 4 is that image identification unit 1, processor unit 2 and warning device 5 provide
Electric energy.
Preferably, described image recognition unit 1 is equipped with infrared light compensating lamp.It is configured with highlighted LED light supplement lamp, colour temperature
6000K, LED light supplement lamp brightness can be adjusted by video encoding unit.
Preferably, said supply unit 4 is powered using solar energy photovoltaic system, and the solar energy photovoltaic system includes successively
Solar panel, charge controller and the rechargeable battery of electric connection, the rechargeable battery respectively with image identification unit 1,
Processor unit 2 and warning device 5 are electrically connected.
Preferably, the warning device 5 is the alarm bell or combined aural and visual alarm being connected with processor unit 2.
Preferably, the information transmission system is WiFi module, GPRS communication module or 3G/4G network module.GPRS without
Line Transmission system provides RS232 standard interface, directly connect with user equipment mainly for industrial scale applications, realizes Chinese and English
SMS function, function of multimedia message, GPRS data transfer function, software interface are easy to use.
Preferably, the terminal is PC or mobile phone.Facilitate operator scene or long-range reception, flexibly monitors.
Preferably, the monitoring device is set to rail bifurcated, railway bridge, railway tunnel side.Above several places are most easily to send out
At raw displacement, it is therefore desirable to especially be monitored.
Using the monitoring method of the above-mentioned railway rail pad system for monitoring displacement based on image recognition processing, including following step
It is rapid:
Step A, field calibration: being set to rail side for monitoring device, is directed at railway rail pad that (backing plate 9 includes rubber mat plate, iron
Backing plate, resilient sleeper-bearing, backing plate 9 are set between sleeper 7 and rail 8, and are fastened by spring), best shooting angle is adjusted,
It is located at region to be monitored in the maximum coverage of image identification unit, and mark of taking pictures is carried out to position to be monitored after powering
It is fixed, test object initial position characteristic value is obtained, is calibrating template, sets calibration point change in location level threshold value, and be stored in
In storage unit；
Step B, data acquisition compares, analysis is handled:
A, calibration point A (x is found in calibrating template T (m, n) picture1,y1)；
B, calibrating template T (m, n) is overlayed translates on searched figure S (W, H), searches for subgraph, search range is: 1≤i≤
W-n, 1≤j≤H-m, according to the following formula measure T andSimilitude:
Above formula is normalized, the related coefficient of template matching is obtained:
When calibrating template is as searched figure, coefficient R (i, j)=1, after completing all search in searched figure S,
Find out the maximum value of R, corresponding subgraphTarget is as matched, in subgraphMiddle searching position hair
The raw calibration point A'(x changed2,y2)；It is averaged by multiple multi-target detection, calculates template T (m, n) and subgraph
In corresponding calibration point A, A' two o'clock mean deviation amount Offset(x2-x1,y2-y1)；
In formula:--- template covers the region of searched subgraph, and i, j are coordinate of the subgraph lower left corner on searched figure S；
C, realistic objective displacement is calculated according to the pixel δ ratio of image identification unit, practical corresponding X-direction shift differences are (x2-
x1) * δ, Y-direction shift differences are (y2-y1)*δ；
The threshold value set when if d, practical corresponding X, Y-direction shift value being more than initial, is marked, in advance the pictorial information
Alert, control warning device work is warned；
Step C, monitoring result is distributed: processor unit sends the analysis result in step B to respectively by the information transmission system
A terminal；
Step D, real-time monitoring: repeat the above steps B, C, sets sample frequency, and interval carries out Image Acquisition to scene, divides
Analysis, and it is distributed to terminal in real time.
Preferably, the information transmission system passes through WiFi module, GPRS communication module, 3G/4G network module in the step C
One or more of be distributed to terminal, realize and real-time monitoring carried out to railway rail pad, completion divides key position data
Analysis, report, early warning.
Working principle of the present invention are as follows: spotting object is saved as into a template image, using the template image, rear
Search target in the big figure of phase cameras capture, it is assumed that the aiming spot coordinate searched for the first time be A (x1, y2), with
Time elapses, and it is A'(x2, y2 that coordinate of ground point is searched in second of cameras capture image), pass through calculating, it can be deduced that two
The offset difference of secondary target is Offset(x2-x1, y2-y1)；At this point, the difference is the difference of pixel, multiplied with the difference
With pixel ratio δ (pixel/mm), so that it may which obtaining practical correspondence X-direction shift differences is (x2-x1) * δ, and Y-direction shift differences are
(y2-y1)*δ。
Specific workflow is (as shown in Figure 4):
System initialization, setting picture pixels scale parameter value are 1.0002 pixels/millimeter, capture Prototype drawing (a institute in Fig. 5
Show), (region A shown in a in Fig. 5) is demarcated in the selected region to be monitored, and monitoring system starts to be monitored, certain time length
(time too short plate will not move or moving distance is smaller) will capture again afterwards demarcates in figure (in Fig. 5 shown in b) and Prototype drawing
Region be compared analysis, calculate calibration point A generation displacement, abscissa displacement be -2.000mm, the position of ordinate
Moving is 3.001mm, and in parameter setting, pixel ratio is set as 1.0002 pixels/millimeter, therefore railway rail pad is mobile are as follows: horizontal
Coordinate displacement is 2.0004mm, and the displacement of ordinate is 3.0016002mm, when backing plate displacement (being calculated using Pythagorean theorem) is more than
When given threshold, monitoring device automatic alarm.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or equipment for including a series of elements not only includes those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or equipment institute it is intrinsic
Element.
Used herein a specific example illustrates the principle and implementation of the invention, the explanation of above example
It is merely used to help understand method and its core concept of the invention.The above is only a preferred embodiment of the present invention, it answers
When pointing out due to the finiteness of literal expression, and objectively there is unlimited specific structure, for the common skill of the art
For art personnel, without departing from the principle of the present invention, several improvement, retouching or variation can also be made, can also incited somebody to action
Above-mentioned technical characteristic is combined in the right way；These improve retouching, variation or combination, or the not improved structure by invention
Think and technical solution directly applies to other occasions, is regarded as protection scope of the present invention.
Claims (9)
1. a kind of railway rail pad system for monitoring displacement based on image recognition processing, it includes monitoring device, the information transmission system
And terminal, which is characterized in that the monitoring device is built in rail side comprising the image identification unit (1) of electric connection, place
Device unit (2), storage unit (3), power supply unit (4) and warning device (5) are managed, described image recognition unit (1) includes being connected
Optical lens and imaging sensor, optical lens by the image of shooting by imaging sensor carry out data conversion after pass to
Processor unit (2) processing, processing result is stored in storage unit (3), while being sent to terminal by the information transmission system,
And control warning device (5) is warned after processing result is more than given threshold；Said supply unit (4) is image recognition
Unit (1), processor unit (2) and warning device (5) provide electric energy.
2. a kind of railway rail pad system for monitoring displacement based on image recognition processing according to claim 1, feature exist
In described image recognition unit (1) is equipped with infrared light compensating lamp.
3. a kind of railway rail pad system for monitoring displacement based on image recognition processing according to claim 1, feature exist
In said supply unit (4) is powered using solar energy photovoltaic system, and the solar energy photovoltaic system includes successively being electrically connected
Solar panel, charge controller and rechargeable battery, the rechargeable battery respectively with image identification unit (1), processor list
First (2) and warning device (5) are electrically connected.
4. a kind of railway rail pad system for monitoring displacement based on image recognition processing according to claim 1, feature exist
In the warning device (5) is the alarm bell or combined aural and visual alarm being connected with processor unit (2).
5. a kind of railway rail pad system for monitoring displacement based on image recognition processing according to claim 1, feature exist
In the information transmission system is WiFi module, GPRS communication module or 3G/4G network module.
6. a kind of railway rail pad system for monitoring displacement based on image recognition processing according to claim 1, feature exist
In the terminal is PC or mobile phone.
7. a kind of railway rail pad system for monitoring displacement based on image recognition processing according to claim 1, feature exist
In the monitoring device is set to rail bifurcated, railway bridge, railway tunnel side.
8. using the prison of the railway rail pad system for monitoring displacement based on image recognition processing described in Arbitrary Term in claim 1-7
Survey method, which comprises the following steps:
Step A, field calibration: monitoring device is set to rail side, adjusts best shooting angle, and treats prison after powering
Location, which is set, carries out calibration of taking pictures, and obtains test object initial position characteristic value, is calibrating template, sets calibration point change in location mark
Quasi- threshold value, and be stored in storage unit；
Step B, data acquisition compares, analysis is handled:
A, calibration point A (x is found in calibrating template T (m, n) picture1,y1)；
B, calibrating template T (m, n) is overlayed translates on searched figure S (W, H), searches for subgraph, search range is: 1≤i≤W-
N, 1≤j≤H-m, according to the following formula measure T andSimilitude:
Above formula is normalized, the related coefficient of template matching is obtained:
When calibrating template is as searched figure, coefficient R (i, j)=1, after completing all search in searched figure S,
Find out the maximum value of R, corresponding subgraphTarget is as matched, in subgraphMiddle searching position hair
The raw calibration point A'(x changed2,y2)；It is averaged by multiple multi-target detection, calculates template T (m, n) and subgraph
In corresponding calibration point A, A' two o'clock mean deviation amount Offset(x2-x1,y2-y1)；
In formula:--- template covers the region of searched subgraph, and i, j are coordinate of the subgraph lower left corner on searched figure S；
C, realistic objective displacement is calculated according to the pixel δ ratio of image identification unit, practical corresponding X-direction shift differences are (x2-
x1) * δ, Y-direction shift differences are (y2-y1)*δ；
The threshold value set when if d, practical corresponding X, Y-direction shift value being more than initial, is marked, in advance the pictorial information
Alert, control warning device is warned；
Step C, monitoring result is distributed: processor unit sends the analysis result in step B to respectively by the information transmission system
A terminal；
Step D, real-time monitoring: repeat the above steps B, C, sets sample frequency, and interval carries out Image Acquisition to scene, divides
Analysis, and it is distributed to terminal in real time.
9. a kind of railway rail pad displacement monitoring method based on image recognition processing according to claim 8, feature exist
In the information transmission system passes through one of WiFi module, GPRS communication module, 3G/4G network module or several in the step C
Kind is distributed to terminal.
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