CN108205018A - A kind of rail examination verifies system - Google Patents
A kind of rail examination verifies system Download PDFInfo
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- CN108205018A CN108205018A CN201810102330.XA CN201810102330A CN108205018A CN 108205018 A CN108205018 A CN 108205018A CN 201810102330 A CN201810102330 A CN 201810102330A CN 108205018 A CN108205018 A CN 108205018A
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
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Abstract
The invention discloses a kind of rail examinations to verify system, and detecting system simulation computer sets rail defects and failures figure using fault signature point；Detecting system simulation computer sets the rail-defect detector car speed of service, is combined according to the current running position of rail-defect detector car and visits wheel construction, obtains the position of each chip during ultrasonic wave transmitting；Position and length of the detecting system simulation computer according to each chip determine the ultrasonic wave emitting area of chip, sequentially generate ultrasonic echo parameters simulation data；Detecting system simulation computer is by transmitting emulation data to rail examination analysis system computer；Rail examination analysis system computer carries out spatial alternation with reference to the structure for visiting wheel, generates the spatially detection hurt figure of position arrangement and verified according to emulation data.The technical issues of the present invention overcomes existing rail examination verification mode to rail examination analysis system shortage verification means, experimentation cost height and easily by environmental constraints, analysis system working performance can be verified whenever and wherever possible.
Description
Technical field
The present invention relates to a kind of electrical equipments of railway engineering machinery, are applied to railway engineering and dimension more particularly, to one kind
Vehicular field is protected, system is verified using the rail examination of ultrasound examination mode.
Background technology
In railway engineering and safeguard vehicular field, ultrasonic rail inspection car 50 is widely used in flaw detection and the dimension of rail
Shield.As shown in Figure 1, a ultrasonic rail fault detection system generally includes：The rail examination inspection being arranged on rail-defect detector car
Examining system 10, rail examination analysis system 20 and the spy wheel 30 for being arranged on rail-defect detector car lower part.When need carry out rail spy
During wound operation, rail-defect detector car, which controls, visits the upper surfaces that wheel 30 is pressed in rail 40, and rail examination detecting system 10 is sent out to wheel 30 is visited
Go out ultrasonic exciting pulse signal, visit the ultrasonic quarter wave plate 14 of wheel 30 under action of alternative electric field, generate the machinery synchronous with electric field
Vibration, so as to emit ultrasonic signal, this process is referred to as inverse piezoelectric effect.Ultrasonic quarter wave plate 14 also can be by alternating pressure
When, alternating electric field is generated, realizes the reception of ultrasonic echo, referred to as direct piezoelectric effect.Ultrasonic examination is applied in rail examination
In principle be：According to the characteristic of ultrasonic wave, once encountering the surface of two kinds of different mediums, it is existing that reflection can occur for ultrasonic wave
As so as to form certain ultrasonic echo signal.The reflection that ultrasonic wave will have 100 ﹪ when entering air from steel, so to steel
Rail defect has good detection result.
30 generally use wheeled construction bodies of wheel are visited, the rack-mounted ultrasonic quarter wave plate 14 5 for there are multigroup different detection angles of axis center is visited
Coupling liquid is full of in the tire outer membrane of wheel 30.When rail-defect detector car is run, visit wheel 30 and rolled along rail 40, ultrasonic quarter wave plate 14 5
Moving direction it is parallel with rail 40.When carrying out rail examination operation, by visiting the ultrasonic wave taken turns 30 ultrasonic quarter wave plate 14 and sent out
Signal would generally be in the flaw face in the contact surface between spy wheel module 30 and rail 40, rail 40 and the following table of rail 40
Face is reflected, and visits the ultrasonic wave wafer receipt of wheel 30 to ultrasonic echo signal, can be by piezoelectric effect further by sound
Wave signal is converted to electric signal, and sends rail examination detecting system 10 to, and rail examination detecting system 10 will by Ethernet
Detection data is transferred to rail examination analysis system 20, and rail examination analysis system 20 generates rail detection hurt figure and carries out
Diagnostic analysis.
Existing rail examination detecting system 10 is usually made of the ultrasonic wave chip of up to more than 30 standalone ultrasound wave channels,
To carry out the multi-faceted flaw detection of multi-angle to rail 40, and rail defects and failures figure is formed, modernization is provided for rail repair
Detection means.Rail defects and failures classification is ever-changing, and analysis system need to constantly verify the diagnostic method of hurt, constantly improve, compels
It is essential and wants a set of corresponding simulation checking system.At present, the verification of rail examination system need to be carried out by two aspects：
First, using (rail 40 of such as hurt plus rail examination detecting system 10) simulation system on-line operation environment in kind
Testing stand, the drawback is that failure rail Finite Samples, sense channel is not complete, can not realize and be verified under high-speed working condition, and test
Platform is of high cost, and detecting system hardware is complicated.
Second is that carry out online verification after 10 entrucking of rail examination detecting system, the shortcomings that this mode be highly prone to it is objective
The restriction of environment.
Invention content
In view of this, the purpose of the present invention is to provide a kind of rail examinations to verify system, and existing rail examination is overcome to test
The technical issues of card mode is to rail examination analysis system shortage verification means, experimentation cost height and easily by environmental constraints.
In order to achieve the above-mentioned object of the invention, the present invention specifically provides a kind of technology realization side of rail examination verification system
Case, rail examination verification system, including：
Detecting system simulation computer sets rail to hinder by the detecting system simulation computer using fault signature point
Damage figure, the rail of simulated failure；The speed of service of rail-defect detector car by the detecting system simulation computer is set, simulates steel
Rail inspection car run, according to the rail-defect detector car run current location, with reference to visit wheel structure, obtain ultrasonic wave transmitting when
The position of each chip；The detecting system simulation computer simulation detection system operation principle, according to the position of each chip and
Length determines the ultrasonic wave emitting area of the chip, and matching meets the fault signature of conditioned reflex in rail defects and failures figure
Point sequentially generates ultrasonic echo parameters simulation data；
And the rail examination analysis system computer being connected with the detecting system simulation computer, the detecting system are imitated
Genuine computer is by the ultrasonic echo parameters simulation data transmission to the rail examination analysis system computer；The rail
Flaw detection component computer carries out spatial alternation according to ultrasonic echo parameters simulation data, with reference to the structure for visiting wheel,
The ultrasonic echo parameters simulation data being sequentially arranged are transformed into the detection hurt figure of spatially position arrangement, and will
The detection hurt figure and the rail defects and failures figure of detecting system simulation computer setting carry out contrast verification.
Preferably, the detecting system simulation computer uses arrangement fault signature point according to the reflection direction of ultrasonic wave
The rail of mode simulated failure, to ensure that each fault signature point can be arrived by the wafer inspection of corresponding angle；The ultrasonic wave
Sense channel number of the echo parameter emulation data including corresponding fault signature point whether there is ultrasonic echo and ultrasonic echo delay
Value；Each fault signature point corresponds to the channel number of corresponding ultrasonic echo supplemental characteristic, the ultrasonic wave direction of the launch of the chip
It is opposite with the reflection direction that corresponding failure characteristic point represents.
Preferably, the detecting system simulation computer uses 37.5 degree left, 0 degree, the right side according to the reflection direction of ultrasonic wave
37.5 degree, 70 degree left, 70 degree of the right side, interior 70 degree and outer 70 degree of fault signature point arrangement simulated failure rail.The steel
Rail hurt figure comes from the hurt figure of detecting system Site Detection or is manually set by the way of fault signature point is arranged.
Preferably, the detecting system simulation computer is detected using spacing detection mode analog ultrasonic wave, is detected twice
The distance between be not more than the length of 1/2 chip, to ensure fault signature point not missing inspection, it is special that the ultrasound examination period is more than failure
The propagation time of sign point ultrasonic wave in the flange of rail of the rail.
Preferably, the ultrasound examination period restrictive condition of the detecting system simulation computer is：
When the speed of service maximum of the rail-defect detector car, the spacing of ultrasound examination is up to 0.5W, detection cycle T
Most short is 0.5W/V, wherein, W is the width of chip, and V is the maximum speed of rail-defect detector car, and it is special that detection cycle T is more than failure
The propagation time of sign point ultrasonic wave in the flange of rail of rail.
Preferably, when the rail-defect detector car is when running on lower-speed state, the minimum spacing of ultrasound examination is controlled not
Less than 1mm.
Preferably, in a certain detection moment of the detecting system simulation computer, sense channel n corresponds to the inspection of chip
Surveying coordinate is：X1+Xn, wherein, n be 1~32 integer, X1For the running position coordinate of rail-defect detector car, XnFor sense channel number
For the corresponding chips of n relative to the coordinate of rail-defect detector car, n is sense channel number.
Preferably, during the detecting system simulation computer generates ultrasonic echo parameters simulation data, certain
Whether the corresponding sense channel of 1 fault signature point has the Rule of judgment of ultrasonic echo to be：
Wherein, X, Y are coordinate of the fault signature point in rail, and α is incidence angle of the ultrasonic wave in rail, and W is chip
Width, X1For the running position of rail-defect detector car, XnIt is the corresponding chips of sense channel n relative to the seat of rail-defect detector car
Mark.
Preferably, it is right during the detecting system simulation computer generates ultrasonic echo parameters simulation data
Corresponding chip prolongs from ultrasonic wave to the ultrasonic echo for receiving ultrasonic wave is sent out at a certain fault signature point in the rail
Duration T is calculated according to the following formula：
2s=2Y/cosa
T1=2s/v
T=T1+T2
Wherein, X, Y are coordinate of the fault signature point in rail, and α is incidence angle of the ultrasonic wave in rail, and s is ultrasound
The one way path length that wave is propagated in rail, v are transmission speed of the ultrasonic wave in rail, and T1 is ultrasonic wave in rail
Propagation time, T2 are that ultrasonic wave is visiting the transmission time in taking turns.
Preferably, the detecting system simulation computer is transmitted to the rail examination analysis system by Ethernet and calculates
The ultrasonic wave emulation data of machine include be made of sense channel n, whether ultrasonic echo and ultrasonic echo delay value one
The running position of rail-defect detector car when group multi-channel detection point data and ultrasonic wave corresponding to the test point emit, speed and
Spacing detection type.
The rail examination provided by implementing the invention described above verifies the technical solution of system, has the following technical effect that：
(1) present invention can easily set various failure hurt figures on simulation computer, simulate various steel
The failure of rail and locomotive operation environment simulate the working performance of rail-defect detector car detecting system, soft to rail examination analysis system
The performance of part is verified；
(2) present invention tests fault sample using Computer Simulation mode, and manufacturing fault sample processes are simple, inspection
Quantity and the fault sample setting for surveying channel are convenient and unrestricted, and construction cost is cheap, can realize locomotive operation environment
Simulation completely；
(3) present invention realizes the simulation of system on-line operation environment using emulation mode, can realize under high-speed working condition
Functional verification, the research and development for rail examination detecting system and analysis system provide verification data, with signal simulation and now
The actually detected system in field is compared, and data are without error, reproducible, the restriction for the environment that is not put to the test caused by detection hardware.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the system structure diagram of prior art rail-defect detector car fault detection system；
Fig. 2 is rail examination verification a kind of structure composition block diagram of specific embodiment of system of the present invention；
Fig. 3 is the fault signature point arrangement schematic diagram in rail examination verification a kind of specific embodiment of system of the present invention；
Fig. 4 is using ultrasound piezoelectric wafer inspection rail in rail examination verification a kind of specific embodiment of system of the present invention
The principle schematic of failure；
Fig. 5 is a kind of detection process schematic diagram of rail examination verification specific embodiment of system of the present invention；
Fig. 6 is the program flow diagram of the rail examination verification method based on present system；
In figure：1- detecting system simulation computers, 2- rail examination analysis system computers, 3- rail examinations verification system
System, 4- fault signatures point, 5- chips, 6- bolts hole, 10- rail examination detecting systems, 20- rail-defect detector car analysis systems, 30-
Visit wheel, 40- rail, 50- rail-defect detector cars.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
Only it is the part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
All other embodiment that art personnel are obtained without creative efforts belongs to the model that the present invention protects
It encloses.
As shown in attached drawing 2 to attached drawing 5, the specific implementation of rail examination verification rail examination verification system of the present invention is given
Example, the invention will be further described in the following with reference to the drawings and specific embodiments.
Embodiment 1
As shown in Figure 2, a kind of specific embodiment of rail examination verification system of the present invention, rail examination verification system 3
Including：
Detecting system simulation computer 1 is connected by Ethernet with rail-defect detector car analysis system computer 2.Detecting system
Simulation computer 1 is for setting rail defects and failures figure and storing, the rail 40 of simulated failure.When carrying out l-G simulation test, machine is set
The speed of service of vehicle (rail-defect detector car 50), simulation rail-defect detector car 50 are run.According to the speed of service of rail-defect detector car 50, really
Determine the tranmitting frequency of ultrasonic wave.The structure of wheel 30 is visited according to the running position of rail-defect detector car 50 and (ultrasound examination), is determined
The respectively detection spatial position of (ultrasound piezoelectric) chip 5.According to the rail defects and failures figure of test position, simulation rail-defect detector car 50 is transported
The testing principle of rail detecting system during row generates corresponding each ultrasonic echo parameters simulation data of a certain moment, by with
Too Netcom is interrogated transmitting emulation data to rail examination analysis system computer 2.Rail examination analysis system computer 2 according to
Too the emulation data of net communication transfer carry out space conversion generation detection hurt figure, can be set with detecting system simulation computer 1
Rail defects and failures figure carry out contrast verification, and playback display is carried out to judge whether one by rail examination analysis system computer 2
It causes.Detecting system simulation computer 1 is to be equipped with the computer with ultrasonic wave rectilinear propagation properties graphical simulation software, steel
Rail inspection car analysis system computer 2 is the computer for being equipped with rail-defect detector car analysis software.
As shown in Figure 3, the arrangement schematic diagram of fault signature point 4 in system 3, each fault signature are verified for rail examination
Point 4 can be detected by (ultrasound piezoelectric) chip 5 of corresponding angle, and damage curve is fitted according to these fault signature points 4.Such as
It is respectively 70 degree on the inside of left 37.5 degree, 0 degree and 37.5 degree right, 70 degree left, 70 degree right, rail, 70 on the outside of rail shown in attached drawing 3
Spend totally 7 kinds of fault signature points.
As shown in Figure 4, the steel to be expressed successively using right 37.5 degree, 0 degree and left 37.5 degree of three kinds of fault signature points 4
Rail bolt hole 6, the vertical line of these fault signature points 4 are represented the reflection direction of ultrasonic wave, are being detected using these fault signature points 4
Rail defects and failures figure is drawn on system emulation computer 1.
It is detected using spacing detection mode analog ultrasonic wave, and is divided into several grades (i.e. several spacing types), rail-defect detector car
50 speed of service is bigger, and spacing is bigger, and the distance between detection twice is not more than the length of 1/2 chip 5, to ensure failure spy
Sign 4 not missing inspections of point.Meanwhile the ultrasound examination period is more than fault signature point 4 in the flange of rail of rail 40 during the propagation of ultrasonic wave
Between.Therefore, when the speed of rail-defect detector car 50 is higher, the tranmitting frequency (i.e. ultrasound examination frequency) of ultrasonic wave is higher.
The restrictive condition in ultrasound examination period is：
When the speed of service maximum of rail-defect detector car 50, the spacing of ultrasound examination is up to 0.5W, and detection cycle T is most
Short is 0.5W/V, wherein, W is the width of chip 5, and V is the maximum speed of rail-defect detector car 50, and detection cycle T is more than failure
The propagation time of the ultrasonic wave in the flange of rail of rail 40 of characteristic point 4.When rail-defect detector car 50 is when running on lower-speed state, can fit
When reducing spacing, meet measuring accuracy requirement, but will not detection data it is excessive, the minimum spacing of ultrasound examination is controlled to be not less than
1mm。
In a certain detection moment, the detection coordinate that sense channel n corresponds to chip 5 is：X1+Xn, wherein, n is 1~32
Integer, X1For the running position coordinate of rail-defect detector car 50, XnIt is the corresponding chips 5 of sense channel n relative to rail-defect detector car
50 coordinate, n are sense channel number.
As shown in Figure 4, a kind of typical specific embodiment of system 3 is verified as rail examination, according to the finger of ultrasonic wave
Tropism, ultrasonic wave is straightline propagation in the detection range close to chip 5.On the basis of the surface of rail 40, there is ultrasonic wave to return
The condition of wave signal is：
Wherein, X, Y are fault signature 4 coordinate in rail 40 of point, and α is incidence angle of the ultrasonic wave in rail 40, and W is
The width of chip 5, detecting system simulation computer 1, rail examination analysis system computer 2 and spy wheel 30 are installed in rail spy
Hinder on vehicle 50, X1For the running position of rail-defect detector car 50, XnIt is the corresponding chips 5 of sense channel n relative to rail-defect detector car
50 coordinate.If (ultrasonic wave) chip 5 has in the width (W/cos α) of X-direction, several units are wide, this feature trouble point 4
It is enlarged into several unit-segments.
For corresponding chip 5 at fault signature point 4 a certain in rail 40 from ultrasonic wave is sent out to receiving the super of ultrasonic wave
Sound echo delay value T is calculated according to the following formula：
2s=2Y/cosa
T1=2s/v
T=T1+T2
Wherein, X, Y are fault signature 4 coordinate in rail 40 of point, and α is incidence angle of the ultrasonic wave in rail 40, and s is
The one way path length that ultrasonic wave is propagated in rail 40, v are transmission speed of the ultrasonic wave in rail 40, and T1 exists for ultrasonic wave
Propagation time in rail 40, T2 are transmission time of the ultrasonic wave in wheel 30 is visited.
As shown in Figure 5, the detection process schematic diagram for the rail-defect detector car simulation test apparatus of the method for the present invention application,
The circular hole defect of three simulations is shown respectively in figure, 37 degree right, middle 0 degree of spy wheel is taken turns in left spy, left 37 degree of ultrasonic waves are taken turns in right spy
Propagation path.Ultrasonic wave acoustic beam uses ray representation, can be by the direction of the launch original after it encounters the fault signature point 4 of same angle
Road returns.
The rail examination verification system of specific embodiment of the invention description is emulated by the way of emulation by detecting system
Computer 1 simulates the on-line operation environment of rail examination detecting system 10.Rail examination analysis system computer 2 is according to detecting
Ultrasound echo signal communication data rail defects and failures figure is obtained after space is converted.And the detecting system of specific embodiment description is imitated
The course of work of genuine computer 1 is then the reverse process of rail examination analysis system computer 2, in detecting system simulation computer
Rail defects and failures figure on 1 is set, then by ultrasonic transmission mechanism, obtains the corresponding ultrasonic echo parameter of rail defects and failures figure
Data are emulated, rail examination analysis system computer 2, rail examination analysis system computer 2 are transmitted to by ethernet communication
Detection hurt figure is formed, the rail defects and failures figure which can be set with detecting system simulation computer 1, which is compared, to be tested
Card.Therefore, detecting system simulation computer 1 can (carrier be rail examination analysis system meter as rail examination analysis system 20
Calculation machine 2) developmental research platform, provide convenient software and hardware verification means for its development, particularly can not be real to ground experiment
Performance verification under existing locomotive high-speed working condition.The specific embodiment of the invention is directed to shortcoming in the prior art, using logical
News emulation mode simulate detection data of the rail examination detecting system 10 in on-line operation on damaged steel rail, can at any time with
Ground is verified by the working performance of rail examination analysis system 20.
The rail examination verification system 3 that the method for the present invention is based on uses two computers and two sets of softwares, emulates rail
The operation principle of fault detection system.Rail examination verification system 3 includes：Detecting system simulation computer 1 and rail examination analysis system
System computer 2, detecting system simulation computer 1 simulate rail examination detecting system 10, and generation emulation data pass through ether Netcom
News are transmitted to rail examination analysis system computer 2.Detecting system simulation computer 1 simulates the work of rail examination detecting system 10
Make process：Rail defects and failures figure, the rail 40 of simulated failure are set by detecting system simulation computer 1；Rail-defect detector car is set
50 speed of service, simulation rail-defect detector car 50 are run；According to the speed of service of rail-defect detector car 50, ultrasonic wave transmitting frequency is determined
Rate；The structure of wheel 30 is visited according to the running position of rail-defect detector car 50 and (ultrasound examination), determines the inspection of each (piezoelectricity) chip 5
Survey spatial position；According to the rail defects and failures figure of detection spatial position, (rail) detecting system when simulation rail-defect detector car 50 is run
Testing principle, generate corresponding each ultrasonic echo parameters simulation data of a certain moment, number will be emulated by ethernet communication
According to being transmitted to rail examination analysis system computer 2.Rail examination analysis system computer 2 transmits imitative according to ethernet communication
True data carries out space conversion generation detection hurt figure, and the rail defects and failures figure that can be set with detecting system simulation computer 1 carries out
Contrast verification, two figures of verification display whether unanimously, and are the steel rail defect fault diagnosis work(of 20 software of rail examination analysis system
Verification data can be provided.
Embodiment 2
As shown in Figure 6, a kind of specific embodiment of the rail examination verification method based on present system, including following
Step：
S10 rail defects and failures figure) is set using fault signature point 4 by detecting system simulation computer 1 and is stored, by unit
Length digitizes the rail 40 of simulated failure；
S20) speed of service of rail-defect detector car 50 by detecting system simulation computer 1 is set, simulate rail-defect detector car
50 operations according to the current location that rail-defect detector car 50 is run, with reference to the structure for visiting wheel 30, obtain each chip during ultrasonic wave transmitting
5 position；
S30) detecting system simulation computer 1 simulates (rail examination) detecting system operation principle, according to each chip 5
Position and length determine the ultrasonic wave emitting area of chip 5, and matching meets the failure spy of conditioned reflex in rail defects and failures figure
Sign point 4 sequentially generates the ultrasonic echo parameters simulation data (sequence) of unit length；
S40) detecting system simulation computer 1 is visited ultrasonic echo parameters simulation data transmission to rail by Ethernet
Hinder analysis system computer 2；
S50) rail examination analysis system computer 2 is according to ultrasonic echo parameters simulation data, with reference to the knot for visiting wheel 30
Structure carries out spatial alternation, and the ultrasonic echo parameters simulation data being sequentially arranged are transformed into spatially position arrangement
Hurt figure is detected, and hurt figure will be detected and carry out contrast verification with the rail defects and failures figure that detecting system simulation computer 1 is set, by
It is consistent to judge whether that rail examination analysis system computer 2 carries out playback display.Again by rail examination analysis system computer 2
Further diagnostic analysis is carried out to the failure of rail 40, and is the steel rail defect event in 20 software of rail-defect detector car analysis system
Hinder diagnostic function and verification data are provided.
In step S10) in, according to the reflection direction of ultrasonic wave by the way of arrangement fault signature point 4 as shown in Figure 3
The rail 40 of simulated failure, to ensure that each fault signature point 4 can be detected by the chip 5 of corresponding angle, which surpasses
The reflection direction that the sound wave direction of the launch and corresponding failure characteristic point 4 represent is on the contrary, each fault signature point 4 corresponds to step S30)
The channel number of middle ultrasonic echo supplemental characteristic.Ultrasonic echo parameters simulation data further comprise corresponding fault signature point 4
Sense channel number, whether there is ultrasonic echo and ultrasonic echo delay value.Rail defects and failures figure is using failure as shown in Figure 3
The defects of fitting of characteristic point 4 sets rail 40 failure.The rail 40 of failure is deposited by unit length fragment sequence number (X-coordinate)
Storage, each segment sequence include fault signature point, failure depth (Y coordinate) information.Fault signature point 4 uses D31~D0 totally 32
(there are certain surpluses for corresponding sense channel number) represents corresponding positions, and corresponding place value indicates the fault signature point for 1, and 0 represents
Fault-free characteristic point, each segment can be there are many fault signature points 4.Fault signature point 4 is placed on rail figure, using failure
Characteristic point 4, which is fitted, to be drawn accident defect figure and stores, and just completes the simulation to failure rail 40.
In step S10) in, according to the reflection direction of ultrasonic wave using 37.5 degree left, 0 degree, 37.5 degree right, the 70 degree left, right side
70 degree, the rail 40 of interior 70 degree and outer 70 degree of 4 arrangement simulated failure of fault signature point.Step S10) in rail defects and failures
Figure comes from the hurt figure of detecting system Site Detection or is manually set by the way of fault signature point 4 is arranged.
In step S20) in, ultrasound examination is detected using spacing, is divided into several grades, the speed of service of rail-defect detector car 50 is got over
Greatly, then spacing is bigger, and the distance between detection twice is not more than the length of 1/2 chip 5, to ensure the 4 not missing inspection of fault signature point.
Meanwhile the ultrasound examination period is more than the propagation time of the ultrasonic wave in the flange of rail of rail 40 of fault signature point 4.Therefore, work as steel
When the speed of rail inspection car 50 is higher, the tranmitting frequency (detecting frequency) of ultrasonic wave is higher.
In step S20) in, the restrictive condition in ultrasound examination period is：
When the speed of service maximum of rail-defect detector car 50, the spacing of ultrasound examination is up to 0.5W, and detection cycle T is most
Short is 0.5W/V, wherein, W is the width of chip 5, and V is the maximum speed of rail-defect detector car 50, and detection cycle T is more than failure
The propagation time of the ultrasonic wave in the flange of rail of rail 40 of characteristic point 4.When rail-defect detector car 50 is when running on lower-speed state, can fit
When reducing spacing, measuring accuracy requirement was not only met, but also be not to cause detection data excessive, therefore controlled ultrasound examination
Minimum spacing is not less than 1mm.
In step S30) in, a certain detection moment, the detection coordinate that sense channel n corresponds to chip 5 is：X1+Xn, wherein,
N be 1~32 integer, X1For the running position coordinate of rail-defect detector car 50, XnFor the corresponding chips 5 of sense channel n relative to
The coordinate of rail-defect detector car 50, n are sense channel number.
In step S30) in, since fault signature point 4 corresponds to 5 type of corresponding (ultrasonic wave) chip, difference visits wheel 30 can
Can have (ultrasonic wave) chip 5 of same type, thus the sense channel number for generating corresponding fault signature point 4 may have it is several, should
Can corresponding (ultrasonic wave) chip 5 of channel number detect corresponding fault signature point 4, related with the position of chip 5 and its width.
According to the directive property of ultrasonic wave, ultrasonic wave is straightline propagation in the detection range close to chip 5.Using the surface of rail 40 as
Whether benchmark, a certain 4 corresponding sense channel of fault signature point have the Rule of judgment of ultrasonic echo to be：
Wherein, X, Y are fault signature 4 coordinate in rail 40 of point, and α is incidence angle of the ultrasonic wave in rail 40, and W is
The width of chip 5, X1For the running position of rail-defect detector car 50, XnIt is visited for the corresponding chips 5 of sense channel n relative to rail
Hinder the coordinate of vehicle 50.
If (ultrasonic wave) chip 5 has in the width (W/cos α) of X-direction, several units are wide, this feature trouble point 4
Several unit-segments are enlarged into, i.e. a fault signature point 4 has zoomed into the width of (piezoelectricity) chip 5 in hurt figure is detected.
In step S30) in, for corresponding chip 5 at fault signature point 4 a certain in rail 40 from ultrasonic wave is sent out to connecing
The ultrasonic echo delay value T for receiving ultrasonic wave is calculated according to the following formula：
2s=2Y/cosa
T1=2s/v
T=T1+T2
Wherein, X, Y are fault signature 4 coordinate in rail 40 of point, and α is incidence angle of the ultrasonic wave in rail 40, and s is
The one way path length that ultrasonic wave is propagated in rail 40, v are transmission speed of the ultrasonic wave in rail 40, and T1 exists for ultrasonic wave
Propagation time in rail 40, T2 are transmission time of the ultrasonic wave in wheel 30 is visited.
In step S40) in, the ultrasonic wave that rail examination analysis system computer 2 is transmitted to by Ethernet emulates data
Including one group of multi-channel detection point data being made of sense channel n, whether ultrasonic echo and ultrasonic echo delay value,
And corresponding to the test point ultrasonic wave emit when rail-defect detector car 50 running position, speed and spacing detection type.
The rail examination described by implementing the specific embodiment of the invention verifies the technical solution of system, can generate as follows
Technique effect：
(1) the rail examination verification system of specific embodiment of the invention description can be on simulation computer easily
Various failure hurt figures are set, simulate the failure of various rail and locomotive operation environment, simulate rail-defect detector car detecting system
Working performance, the performance of rail examination analysis system software is verified；
(2) the rail examination verification system of specific embodiment of the invention description uses Computer Simulation mode to fault sample
It is tested, manufacturing fault sample processes are simple, and quantity and the fault sample setting of sense channel are convenient and unrestricted, build
It is of low cost, it can realize the complete simulation of locomotive operation environment；
(3) the rail examination verification system of specific embodiment of the invention description realizes system on-line operation using emulation mode
The simulation of environment can realize the functional verification under high-speed working condition, be rail examination detecting system and analysis system research with
Exploitation provides verification data, and compared with the actually detected system of signal simulation and scene, data are without error, weight caused by detection hardware
Renaturation is good, the restriction for the environment that is not put to the test.
Professional further appreciates that, with reference to disclosed in this invention each exemplary list for describing of embodiment
Member and step can realize with the combination of electronic hardware, computer software or the two, in order to clearly demonstrate hardware and soft
The interchangeability of part generally describes each exemplary composition and step according to function in the above description.These work(
It can be performed actually with hardware or software mode, specific application and design constraint depending on technical solution.Professional skill
Art personnel can realize described function to each specific application using distinct methods, but this realization should not be recognized
It is beyond the scope of this invention.
Hardware, processor can directly be used to perform with reference to the method or algorithm that the embodiments described herein describes
The combination of software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only memory
(ROM), electrically programmable ROM, electrically erasable ROM, various programmable logic device, register, hard disk, removable magnetic
In the storage medium of disk, CD-ROM or arbitrary other forms well known in the art.Perform the processor of software module
Can be central processing unit (CPU), embeded processor, microcontroller (MCU), digital signal processor (DSP), microcontroller,
System on chip (SOC), programmable logic device and arbitrary other forms well known in the art have control,
The device of processing function.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
The above described is only a preferred embodiment of the present invention, not make limitation in any form to the present invention.Though
So the present invention is disclosed above with preferred embodiment, however is not limited to the present invention.It is any to be familiar with those skilled in the art
Member, in the case where not departing from the Spirit Essence of the present invention and technical solution, all using in the methods and techniques of the disclosure above
Appearance makes technical solution of the present invention many possible changes and modifications or is revised as the equivalent embodiment of equivalent variations.Therefore,
Every content without departing from technical solution of the present invention, technical spirit according to the present invention are made to the above embodiment any simple
Modification, equivalent replacement, equivalence changes and modification, still fall within technical solution of the present invention protection in the range of.
Claims (10)
1. a kind of rail examination verifies system, which is characterized in that including：
Detecting system simulation computer (1) is set by the detecting system simulation computer (1) using fault signature point (4)
Rail defects and failures figure, the rail (40) of simulated failure；Rail-defect detector car (50) is set by the detecting system simulation computer (1)
The speed of service, simulation rail-defect detector car (50) run, according to the rail-defect detector car (50) run current location, with reference to spy
The structure of (30) is taken turns, obtains the position of each chip (5) during ultrasonic wave transmitting；Detecting system simulation computer (1) the simulation inspection
Examining system operation principle according to the position of each chip (5) and length, determines the ultrasonic wave emitting area of the chip (5), and
Matching meets the fault signature point (4) of conditioned reflex in rail defects and failures figure, sequentially generates ultrasonic echo parameters simulation data；
And the rail examination analysis system computer (2) being connected with the detecting system simulation computer (1), the detecting system
Simulation computer (1) is by the ultrasonic echo parameters simulation data transmission to the rail examination analysis system computer (2)；
The rail examination analysis system computer (2) is according to ultrasonic echo parameters simulation data, with reference to the knot for visiting wheel (30)
Structure carries out spatial alternation, and the ultrasonic echo parameters simulation data being sequentially arranged are transformed into spatially position arrangement
Hurt figure is detected, and the detection hurt figure and the rail defects and failures figure of the detecting system simulation computer (1) setting are carried out
Contrast verification.
2. rail examination according to claim 1 verifies system, it is characterised in that：The detecting system simulation computer
(1) it is every to ensure according to the rail (40) of the reflection direction of ultrasonic wave simulated failure by the way of arrangement fault signature point (4)
A fault signature point (4) can be detected by the chip (5) of corresponding angle；The ultrasonic echo parameters simulation data include pair
It answers the sense channel number of fault signature point (4), whether there is ultrasonic echo and ultrasonic echo delay value；Each fault signature point
(4) channel number of corresponding ultrasonic echo supplemental characteristic is corresponded to, the ultrasonic wave direction of the launch and corresponding failure of the chip (5) are special
It is opposite to levy the reflection direction that point (4) represents.
3. rail examination according to claim 2 verifies system, it is characterised in that：The detecting system simulation computer
(1) according to the reflection direction of ultrasonic wave using left 37.5 degree, 0 degree, it is 37.5 degree right, 70 degree of a left side, 70 degree of the right side, 70 degree and 70 degree outer interior
Fault signature point (4) arrangement simulated failure rail (40)；The rail defects and failures figure comes from the inspection of detecting system scene
The hurt figure of survey is manually set by the way of arrangement fault signature point (4).
4. the rail examination verification system according to Claims 2 or 3, it is characterised in that：The detecting system simulation calculation
Machine (1) is detected using spacing detection mode analog ultrasonic wave, and the distance between detection twice is not more than the length of 1/2 chip (5),
To ensure fault signature point (4) not missing inspection, the ultrasound examination period is more than the flange of rail of the fault signature point (4) in the rail (40)
When ultrasonic wave propagation time.
5. rail examination according to claim 4 verifies system, which is characterized in that the detecting system simulation computer
(1) ultrasound examination period restrictive condition is：
When the speed of service maximum of the rail-defect detector car (50), the spacing of ultrasound examination is up to 0.5W, detection cycle T
Most short is 0.5W/V, wherein, W is the width of chip (5), and V is the maximum speed of rail-defect detector car (50), and detection cycle T is big
The propagation time of ultrasonic wave when the flange of rail of the fault signature point (4) in rail (40).
6. rail examination according to claim 5 verifies system, it is characterised in that：When the fortune of the rail-defect detector car (50)
Row controls the minimum spacing of ultrasound examination to be not less than 1mm when lower-speed state.
7. system is verified according to claim 2,3,5 or 6 any one of them rail examinations, which is characterized in that in the detection
The a certain detection moment of system emulation computer (1), the detection coordinate that sense channel n corresponds to chip (5) are：X1+Xn, wherein,
N be 1~32 integer, X1For the running position coordinate of rail-defect detector car (50), XnFor the corresponding chips of sense channel n (5) phase
For the coordinate of rail-defect detector car (50), n is sense channel number.
8. rail examination according to claim 7 verifies system, which is characterized in that in the detecting system simulation computer
(1) during generating ultrasonic echo parameters simulation data, it is super whether the corresponding sense channel of a certain fault signature point (4) has
The Rule of judgment of sound echo is：
Wherein, X, Y be coordinate of the fault signature point (4) in rail (40), α be incidence angle of the ultrasonic wave in rail (40), W
For the width of chip (5), X1For the running position of rail-defect detector car (50), XnIt is opposite for the corresponding chips of sense channel n (5)
Coordinate in rail-defect detector car (50).
9. rail examination according to claim 8 verifies system, which is characterized in that in the detecting system simulation computer
(1) during generating ultrasonic echo parameters simulation data, at fault signature point (4) a certain in the rail (40) pairs
The chip (5) answered is calculated from the ultrasonic echo delay value T for sending out ultrasonic wave to reception ultrasonic wave according to the following formula：
2s=2Y/cosa
T1=2s/v
T=T1+T2
Wherein, X, Y be coordinate of the fault signature point (4) in rail (40), α be incidence angle of the ultrasonic wave in rail (40), s
For the one way path length that ultrasonic wave is propagated in rail (40), v is transmission speed of the ultrasonic wave in rail (40), and T1 is super
Propagation time of the sound wave in rail (40), T2 are that ultrasonic wave is visiting the transmission time in taking turns (30).
10. system is verified according to claim 2,3,5,6,8 or 9 or any one of them rail examination, it is characterised in that：It is described
The ultrasonic wave that detecting system simulation computer (1) is transmitted to the rail examination analysis system computer (2) by Ethernet is imitated
True data includes one group of multi-channel detection being made of sense channel n, whether ultrasonic echo and ultrasonic echo delay value
Running position, speed and the spacing of rail-defect detector car (50) detect when point data and the ultrasonic wave transmitting corresponding to the test point
Type.
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| CN201810102330.XA CN108205018A (en) | 2018-02-01 | 2018-02-01 | A kind of rail examination verifies system |
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|---|---|---|---|
| CN201810102330.XA CN108205018A (en) | 2018-02-01 | 2018-02-01 | A kind of rail examination verifies system |
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| CN108205018A true CN108205018A (en) | 2018-06-26 |
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| CN201810102330.XA Pending CN108205018A (en) | 2018-02-01 | 2018-02-01 | A kind of rail examination verifies system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112712740A (en) * | 2020-12-15 | 2021-04-27 | 中国铁路北京局集团有限公司唐山工务段 | Steel rail ultrasonic flaw detection simulation method and device |
| CN114067630A (en) * | 2021-10-29 | 2022-02-18 | 株洲时代电子技术有限公司 | Simulation operation method of steel rail flaw detection vehicle |
| CN114093217A (en) * | 2021-10-29 | 2022-02-25 | 株洲时代电子技术有限公司 | Simulated operation system of steel rail flaw detection vehicle |
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