CN103913511A - Steel rail flaw detection device and steel rail flaw detection method based on wireless split wheel edge-type probe arrays - Google Patents
Steel rail flaw detection device and steel rail flaw detection method based on wireless split wheel edge-type probe arrays Download PDFInfo
- Publication number
- CN103913511A CN103913511A CN201410134081.4A CN201410134081A CN103913511A CN 103913511 A CN103913511 A CN 103913511A CN 201410134081 A CN201410134081 A CN 201410134081A CN 103913511 A CN103913511 A CN 103913511A
- Authority
- CN
- China
- Prior art keywords
- wheel
- sheet
- along
- rail
- probe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention provides a steel rail flaw detection device and a steel rail flaw detection method based on wireless split wheel edge-type probe arrays. The device comprises a plurality of detection wheels, connecting rods, supporting bodies and a background processing system, wherein each detection wheel comprises a wheel edge (namely the edge of the detection wheel), a detection wheel inner protective plate, a detection wheel outer protective plate and a detection wheel circuit module; the wheel edge is formed by tiling a plurality of wheel edge pieces in parallel; each wheel edge piece is formed by overlapping a wheel edge piece substrate and an acoustically transparent outer membrane; a plurality of single-output multi-input probe arrays and pressure sensors are embedded into the wheel edge substrates. According to the method, ultrasonic echo signals acquired by the wheel edge-type probe arrays are transmitted to a background in a short-distance high-speed wireless way for performing high-speed processing; the background processing system performs flaw detection processing and result displaying. By the device and the method, the distance between each probe and a steel rail is shortened, the detection precision and the traveling speed of a train can be improved, and the detection signal transmitting and receiving of a detection end and the background processing are separated, so that the detection end of the flaw detection device is simple in structure and convenient to assemble and disassemble.
Description
Technical field
The present invention relates to ultrasound wave lossless detection technology and wireless communication technology, be specifically related to utilize wireless Split toothed wheel to carry out the method for rail examination along formula linear transducer array device.
Background technology
China Railway efficiency occupies the whole world the first, completes more than 25% freight volume with the operation mileage in the whole world 6%, and rail transportation system is extremely busy, and Train Interval only has tens minutes.China railways line status is more complicated, and extended active duty rail quantity is large, and the operation of overload makes railway track the rate of injury high, directly jeopardizes transport and traffic safety.Rail head of rail inner transverse fatigue crack (being commonly called as core wound) once caused many disconnected rail accidents.In order to ensure the security of railway operation and the comfortableness of taking, according to China's rail examination operation or work standard, need regularly circuit to be overhauled, every circuit need detect more than 5～10 times every year on average, as can be seen here, the maintenance of China rail is huge with maintenance work amount, is badly in need of efficiently, rail examination equipment cheaply.
In-service rail examination mainly checks various tired defect and the hurt that rail in use produces, mainly comprise at the bottom of rail core wound, rail joint hurt, rail horizontal crackle, rail longitudinal crack, Rail crackle and steel rail weld joint hurt etc., wherein rail core wound is the hurt of harmfulness maximum, is also the main project of flaw detection.In-service rail examination need to, in the middle detection of advancing, carry out rail replacement once pinpoint the problems in time, guarantees operation security; Because railway operating kilometrage is long, detection limit is large simultaneously, and therefore outdoor environment complexity has higher requirement to rail examination technically.In-service rail examination method mainly contains the flaw detection modes such as electromagnetic eddy method, supersonic testing method, ray, magnetic, infiltration.Electromagnetic eddy method can only detect surface or the near surface flaw of metallic conductor, detects the degree of depth very shallow, is difficult to meet the testing requirement of rail core wound.Supersonic testing method can detect the inner hurt of rail, compared with other method of detection (as flaw detection modes such as ray, magnetic, infiltrations), the advantages such as that ultrasound examination rail defects and failures has is highly sensitive, detection speed fast, accurate positioning, have become the main flow means that domestic and international rail examination extensively adopts.
At present, be used for the miniature ultrasonic detecting devices of rail examination mainly taking Trolley slidingtype defectoscope as main, ultrasonic probe is fixed on inspection car, by multiple angle probes and the normal probe joint-detection of different angles, can be to the core wound of rail head and the web of the rail, bolt hole crack, the flaw detection of web of the rail flange of rail longitudinal crack hurt.Structurally, adopt sliding structure, probe directly contacts with rail, is close to rail operation when flaw detection, and the signal distance of swimming is short, and loss is low, and detection accuracy is high.But owing to being the detection that moves ahead of sliding, friction is serious, and therefore speed of detection is slow, and detection speed only has 2-3 kilometer/hour, and work efficiency is low.
And be motor-driven ultrasonic rail examination equipment at the rail examination equipment of developed country's widespread uses such as the U.S., Switzerland, Britain, Japan, its technical merit is higher.Can be divided into wheel seach unit and skid shoe type probe from sonde configuration.Wheel seach unit structure, as a wheel, is made up of probe bracket and spy wheel adventitia, and probe bracket is arranged on wheel shaft and pops one's head in for mounting ultrasonic, visits wheel adventitia and is made by entrant sound resin material, for wrapping up the entrant sound coupling liquid of whole inner chamber.Five ultrasonic probes of general installation on probe bracket, in the middle of probe is generally placed in wheel, launch the ultrasound wave of three kinds of different directions and different frequency to rail.When flaw detection, visit wheel adventitia and roll forward with car motion, and ultrasonic probe is wherein motionless, to keep, hyperacoustic to transmit and receive direction constant.Skid shoe type probe is combined by ultrasonic probe and skid plate, and multiple ultrasonic probes embed in skid plate by different angles, and when flaw detection, ultrasonic probe slides along rail orbital plane with skid plate.Early stage because wheel seach unit designing and making technology is relatively backward, bad adaptability, skid shoe type probe was once got the upper hand.Recently the more than ten years, wheel seach unit quality obviously improves, so wheel seach unit has become again main flow gradually.
, there is following shortcoming and defect in the feature of summing up the current wheeled ultrasonic probe generally using:
(1) centre that the ultrasonic probe of wheeled construction is arranged in wheel is in taking turns coupling liquid, ultrasound wave from probe is launched in going through wheel coupling liquid, visit multilayered mediuies such as taking turns adventitia and water, traverse distance is long, through back and forth transmission and reflection cause loss of signal large, weak output signal, detection sensitivity is low.
(2) can not support higher travelling speed.Ultrasound wave is velocity of propagation slow (velocity of sound is about 1/3 in steel) in coupling liquid, and echo a period of time that will lag behind could accurately be received by ultrasonic probe.Therefore,, for avoiding ultrasound echo signal to lose, detection speed can not be too fast, can not support higher travelling speed.For shortening echo time delay, can reduce spy wheel diameter, thereby reduce the travel-time of ultrasound wave in coupling liquid, but diameter diminishes, visiting wheel surface linear velocity can uprise, and can make coupling liquid self in wheel occur disturbance and the interference sonic transmissions that heats up, occur countless assorted reflection waves, order flaw detection is difficult to carry out.
(3) movability is bad, needs customized special inspection car.Wheeled ultrasonic probe transmitting short pulse ripple, launch time is short, pulse height is high, therefore need higher emitted energy, so probe must be connected to provide high drive by wire cable with back-end system, make whole system become huge entirety, be inconvenient to move, need customized special inspection car.
(4) be subject to wheeled space constraint, each spy wheel can only be installed 5-7 probe conventionally, and probe quantity is few, and flaw detection precision is difficult to further raising; And probe number is limited, can cause receiving the limited in one's ability of signal, easily occurs undetected.
(5) consumable accessory consumption is large, and maintenance cost is high.The spy wheel thousands of units of the each unit price of adventitia that existing entrant sound resin material is made, and because need to wrap up a large amount of coupling liquids, so tire tread occurs that small damage just needs to change.China railways main line has 30,000 kilometers (are multiple line, do not comprise the branch line of each city underground, light rail and nearly 50,000 kilometers), detects if all use large-scale inspection car instead, and annual test is by minimum 6 times.Rail-defect detector car uses 4 to visit wheel simultaneously, calculates by each spy wheel 100km operating limit, only visits the consumption of wheel adventitia annual just up to up to ten million units.
Summary of the invention
Be subject to its design concept and structural restriction for the wheeled ultrasonic probe generally using at present for main rail examination equipment, as ultrasonic probe is positioned at, wheel is middle causes signal to pass through path length, loss is large, high drive probe must wired connection cause customizing inspection car and not take array probe etc. probe and back-end system, exist bottleneck on detection speed and detection the problem such as to owe precisely, the present invention propose a kind of based on wireless Split toothed wheel the steel rail flaw detection device along formula linear transducer array, this device is received array multiple single-shots more and is positioned over wheel along (visiting wheel edge), shorten detection range, improve detection accuracy and travelling speed, the ultrasound echo signal that wheel is collected along formula linear transducer array is transferred to backstage by short distance high-speed radio and processes quickly and efficiently, transmission reception and background process by end of probe detectable signal are separated, make the end of probe of newly-designed steel rail flaw detection device simple in structure, easy installation and removal, meanwhile, the high-precision probe algorithm in backstage is able to realize with this and improve accuracy of detection with high-performance calculation.The present invention is achieved through the following technical solutions:
Comprise multiple spy wheels, connecting link, supporter and a background processing system based on wireless Split toothed wheel along the steel rail flaw detection device of formula linear transducer array.Described spy wheel comprises wheel edge, visits wheel inner casing, visits wheel outer casing, and spy wheel circuit module.Wheel is along directly contacting with the rail head of rail; Visit wheel outer casing and refer to the fender along outside at wheel, visit wheel inner casing and refer to the fender along inner side at wheel, this two block protections plate is mainly to block wheel along sheet, shields; Visiting wheel circuit module is placed in the middle circuit card slot of spy wheel inner casing.Visit wheel and mainly complete transmission and the collection of detectable signal, be not used as load capacity, multiple spies wheels hang on an inspection car by connecting link and supporter or operation train on, can survey by double track simultaneously.The detection data that background processing system is obtained spy wheel carries out carrying out flaw detection processing and result shows.
As above-mentioned based on wireless Split toothed wheel the prioritization scheme along the steel rail flaw detection device of formula linear transducer array, described wheel along taking turns along sheet and tile and form side by side by several, described wheel along sheet is formed by stacking by taking turns along sheet sheet base and entrant sound adventitia, wheel embeds several ultrasonic probes along sheet sheet base, ultrasonic probe is many arrayed, each array can be circle battle array, square formation etc., and the center probe of each array is popped one's head in for sending, around be receiving transducer; Probe degree of tilt (angle of ultrasonic probe and rail xsect) has 0 °, 30 ° ~ 50 °, 60 ° ~ 80 ° three kinds, and the probe degree of tilt of each array is consistent.The linear transducer array that adopts 0 ° of pitch angle to arrange is generally positioned at the middle part of many arrayed, is used for surveying horizontal crackle and the longitudinal crack of rail head, the web of the rail and the flange of rail; Adopt 30 ° ~ 50 ° linear transducer arrays of arranging with 60 ° ~ 80 ° pitch angle to be positioned at the both sides parallel with rail length direction; The probe of 30 ° ~ 50 ° pitch angle layouts is used for surveying the damage at the web of the rail and bolt hole place; The probe of 60 ° ~ 80 ° pitch angle layouts is used for finding core wound or the transverse fissure in rail head.
As above-mentioned based on wireless Split toothed wheel the prioritization scheme along the steel rail flaw detection device of formula linear transducer array, pitch angle is that the ultrasonic frequency of 0 ° of ultrasonic probe is 3 ~ 4MHz, its beams reflected face is positioned at flange of rail bottom surface; Pitch angle is that the ultrasonic frequency of the ultrasonic probe of 30 ° ~ 50 ° is 2 ~ 3MHz, and its beams reflected face is positioned at flange of rail bottom surface equally; Pitch angle is that the ultrasonic frequency of the ultrasonic probe of 60 ° ~ 80 ° is 4 ~ 5MHz, and its beams reflected face is positioned at rail head bottom surface.
As above-mentioned based on wireless Split toothed wheel the prioritization scheme along the steel rail flaw detection device of formula linear transducer array, described take turns along in wheel be also furnished with pressure transducer along sheet sheet base, it is placed in wheel along the middle part of sheet sheet base, is responsible for detecting the pressure state of wheel along sheet; Wheel adopts elastomeric material along sheet sheet base, and wheel is filled by entrant sound coupling liquid along the gap between sheet sheet base and entrant sound adventitia.
As above-mentioned based on wireless Split toothed wheel the prioritization scheme along the steel rail flaw detection device of formula linear transducer array, described spy wheel circuit module comprises battery, ultrasonic transceiver circuit and spy wheel wireless communication module and visits the stube cable between wheel circuit module unit; Described battery is connected with ultrasonic transceiver circuit and spy wheel wireless communication module respectively, is also connected along the linear transducer array of sheet sheet base with wheel; Ultrasonic transceiver circuit is connected along the linear transducer array of sheet sheet base with wheel; Ultrasonic transceiver circuit is transmitted to wheel along corresponding ultrasonic probe in sheet sheet base linear transducer array, the ultrasonic transceiver circuit reflection wave signal that also each ultrasonic probe of buffer memory receives by continuous multifrequency Modulated Ultrasonic ripple signal; Visit wheel wireless communication module the continuous multifrequency Modulated Ultrasonic ripple signal of background processing system generation is sent to ultrasonic transceiver circuit, the reflection wave signal simultaneously each ultrasonic probe being received and the signal of pressure transducer send background processing system to and process.Described battery adopts minicell, and minicell is fixed in the circuit card slot of visiting in the middle of wheel inner casing together with described ultrasonic transceiver circuit, spy wheel wireless communication module with resilient material.Middle circuit card slot and the connecting link of spy wheel inner casing of placing spy wheel circuit module communicates.
As above-mentioned based on wireless Split toothed wheel the prioritization scheme along the steel rail flaw detection device of formula linear transducer array, described background processing system comprises backstage wireless communication module, processing module, display module, human-computer interaction module.Backstage wireless communication module is corresponding with the spy wheel wireless communication module of visiting the spy wheel circuit module in wheel, is positioned in connecting link, carries out short-range radio communication; Processing module is that the ultrasound echo signal that wheel is collected along formula linear transducer array is processed quickly and efficiently, detects the position that has or not hurt and hurt; Display module shows situation about detecting in real time, and hurt position, shape, hurt classification is shown; Human-computer interaction module can carry out manual control to the result store of the control parameter of the duration parameters of transmitted signal, demonstration, detection.
As above-mentioned based on wireless Split toothed wheel the prioritization scheme along the steel rail flaw detection device of formula linear transducer array, described background processing system is carried out carrying out flaw detection processing and result to wheel along the data that in sheet sheet base, array ultrasonic probe obtains and is shown.Obtaining of data is the backstage wireless communication module acquisition by background processing system, this module is positioned in connecting link, it is relative with the spy wheel circuit module in the middle of visiting wheel inner casing, in same level height, the backstage wireless communication module of background processing system is taken turns wireless communication module with the spy in the spy wheel circuit module of visiting in the middle of wheel inner casing and is just easy to realize short-range high-speed radio transmission like this.It is that the processing module that passes to background processing system through wired mode is carried out analyzing and processing that backstage wireless communication module obtains after data.
As above-mentioned based on wireless Split toothed wheel the prioritization scheme along the steel rail flaw detection device of formula linear transducer array, the backstage wireless communication module of multiple spy wheels, connecting link, supporter and the background processing system of described device is because directly contacting with the rail of surveying, be called the end of probe along the steel rail flaw detection device of formula linear transducer array based on wireless Split toothed wheel, processing module, display module and the human-computer interaction module of background processing system is positioned on inspection car or runs in train, is called backstage.
Above-mentioned wireless Split toothed wheel, along the rail examination method of formula linear transducer array, comprises the steps:
(1) wheel is after sheet contact rail, and wheel is experienced pressure along the pressure transducer in sheet sheet base, takes turns wireless communication module reach background processing system after generation contact trigger pip by spy;
(2) background processing system receives contact and controls this after trigger pip and take turns along sheet in running order; Wheel comprises sending and receiving along the duty of the ultrasonic probe in sheet; If at a time background processing system judges that certain takes turns along sheet in running order, this is taken turns along the center probe of all arrays of sheet and should be emission state, according to the pitch angle of array probe, produce different continuous multifrequency Modulated Ultrasonic ripple signals and reach this by the backstage wireless communication module of background processing system and take turns along sheet; As: certain takes turns the center probe A of the linear transducer array A arranging along 0 ° of pitch angle of sheet
0for emission state, produce the continuous multifrequency Modulated Ultrasonic ripple signal of 3 ~ 4MHz, certain takes turns the center probe B of the linear transducer array B arranging along 30 ° ~ 50 ° pitch angle of sheet
0for emission state, produce the continuous multifrequency Modulated Ultrasonic ripple signal of 2 ~ 3MHz, certain takes turns the center probe C of the linear transducer array C arranging along 60 ° ~ 80 ° pitch angle of sheet
0for emission state, produce the continuous multifrequency Modulated Ultrasonic ripple signal of 4 ~ 5MHz;
(3) wheel receives along the spy wheel wireless communication module on sheet the signal that background processing system transmits, and transfers to ultrasonic transceiver circuit; The ultrasound wave that ultrasonic transceiver circuit sends corresponding frequencies according to the corresponding ultrasonic probe of continuous multifrequency Modulated Ultrasonic ripple signal controlling transmitting carries out rail examination;
(4) be positioned at the center probe A of linear transducer array A
0the direction that the ultrasound wave sending reflects through rail has some center probe A that are positioned at linear transducer array A
0a circle probe A around
1.。。a
n, all in accepting state, ultrasonic probe A
1.。。a
nreceive from ultrasonic probe A
0the ultrasonic signal that sends and return through rail internal reflection, reaches background processing system through visiting wheel wireless communication module.Other linear transducer array is also similar, center probe transmitting, and a circle probe around receives echo;
(5) echo that background processing system receives the each linear transducer array receiving processes and hurt detects.As receive ultrasonic probe A
1.。。a
nreceive after echoed signal, transfer to background processing system, background processing system is carried out analyzing and processing to signal, judges that ultrasound beamformer is from probe A
0send through rail and reflex to ultrasonic probe A
1.。。a
npath in rail have not damaged.The display module of background processing system shows situation about detecting in real time, and hurt position, shape, hurt classification is shown;
(6) in the time that wheel departs from rail along sheet, wheel is experienced pressure along the pressure transducer in sheet sheet base and is disappeared, and generation departs from trigger pip and reaches background processing system by wheel along the spy wheel wireless communication module in sheet; Background processing system judges that epicycle departs from rail along sheet after receiving and departing from trigger pip, takes turns along the transmitting-receiving of sheet ultrasonic signal so stop this, and this is taken turns along sheet in waiting status, until next circulation starts.
In above-mentioned method of detection, continue to use the detection principle of wheel seach unit to the ultrasound wave of three kinds of different directions of rail transmitting and different frequency, while having hurt, its reflection paths is consistent with transmission path, so will keep the degree of tilt direction of sending and receiving ultrasonic probe constant.Just can judge corresponding rail head, the web of the rail and the flange of rail according to the ultrasound beamformer of three kinds of degree of tilt and reflected beam thereof and whether occur horizontal crackle or longitudinal crack, time, energy and the waveform returning according to reflection wave just can directly be determined position, the shape of crackle.
Compared with existing wheeled ultrasonic probe assembly, the present invention has the following advantages:
(1) linear transducer array is arranged in to wheel along upper, directly contact with rail, distance between probe and rail is also reduced in 2cm from the 10cm left and right of wheeled construction like this, the traverse distance of ultrasonic signal in medium shortens, the decay of signal reduces greatly, this can not only improve detection accuracy, and makes can use small-sized microelectronics voltage devices in probe preparation; Ultrasonic signal sends to the shortening of time of reception in addition, can support higher road speed, solves the bottleneck of travelling speed.
(2) each wheel along each array in sheet sheet base linear transducer array adopts the continuous single-shot of gapless to receive dual-mode more, is to adopt a probe transmitting, and multiple probes receive, the rail detection information amount of obtaining is like this large, significantly improve signal to noise ratio (S/N ratio), improve detection accuracy, also can avoid undetected.
(3) same position rail has multiple spy wheel processes, can repeatedly survey, and avoids undetected.
(4) carry out separating of physical location by short haul connection by between background processing system and ultrasonic probe, replace the mode of the fixing wired connection of existing ultrasonic probe and background processing system, can reduce system line complexity, greatly improve the dirigibility of surveying.Facilitate the installation and removal of end of probe ultrasonic probe simultaneously, visit wheel and can hang over the supersonic sounding that carries out rail on operation car, without the inspection car with special.
(5) adopt short distance hypervelocity Wireless Data Transmission, substitute traditional simulation wire cable transmission mode, realize the transmission of signal high-capacity and high-speed.Thereby a large amount of complicated signals is processed and is calculated and can be realized by background processing system, can ensure fast processing and the high precision imaging of detection data.
(6) adopt wideband frequency modulation signal, wheel is sent respectively to the modulated continuous wave that 2 ~ 5Mz does not wait along the multiple ultrasonic probes on sheet, replace traditional pulsating wave, can greatly reduce detecting voltage, reduce power consumption.
(7) wheel is simple along chip architecture, volume is little, price is low.When wheel damages along sheet, only single the wheel along sheet of damaging need to be changed, more not need to consume coupling liquid.So compared with existing wheeled ultrasonic probe assembly, later maintenance cost significantly reduces.
Brief description of the drawings
Fig. 1 is the steel rail flaw detection device end of probe work schematic diagram along formula linear transducer array based on wireless Split toothed wheel.
Fig. 2 visits wheel flaw detection suspension member work schematic diagram.
Fig. 3 visits wheel schematic diagram.
Fig. 4 visits wheel wheel along schematic diagram.
Fig. 5 is that wheel is along floor map outside sheet.
Fig. 6 is that wheel is along sheet inner side plane schematic diagram.
Fig. 7 is the arrangement schematic diagram of wheel along circle battle array array probe in sheet.
Fig. 8 is the schematic diagram of visiting wheel circuit module and being connected along sheet sheet base with wheel.
Fig. 9 is the structured flowchart of visiting wheel circuit module and being connected along sheet sheet base with wheel.
Figure 10 is the structural representation of visiting wheel and background processing system.
Figure 11 is wireless communication module inner structure block diagram.
Figure 12 is single wheel along sheet single workflow diagram.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further, but enforcement of the present invention is not limited to this.
As shown in Figure 1, the end of probe of wireless Split toothed wheel of the present invention along formula linear transducer array steel rail flaw detection device, figure is shown with 8 work schematic diagram of visiting the rail examination assembly of taking turns 101 compositions, in the middle of every two spy wheels, is linked together and is formed spy wheels by a transverse axis connecting link 102.This 4 couple visits wheels, self is unpowered device, be connected on supporter 104 by transverse axis connecting link 102 and longitudinal axis connecting link 103, form a flaw detection trolley, and then be connected with the chassis of seamed high-speed steel rail inspection car, be positioned on rail 105, directly contact with the rail head 108 of rail, just can be along with seamed high-speed steel rail inspection car moves ahead and carries out flaw detection at a high speed.
As shown in Figure 2, wireless Split toothed wheel hangs on operation car 106 along the rail examination assembly (wireless Split toothed wheel is along the end of probe of formula linear transducer array steel rail flaw detection device) of formula linear transducer array, and background process and display system 107 are positioned in operation car 106.Diagram seamed high-speed steel rail inspection car every side mounting 4 rail examination assemblies visit wheel, the number that wireless Split toothed wheel is visited wheel along the rail examination assembly of formula linear transducer array can be adjusted according to the needs of concrete acquisition environment, the number of visiting wheel is more, repeat through the probe of same location of rail just more, can effectively avoid undetected, improve detection efficiency and precision.
As shown in Fig. 3～4, be the structural representation of visiting wheel, each spy wheel comprise wheel along 201, visit wheel outer casing 202, visit wheel inner casing 203, and visit wheel circuit module 204.Wheel directly contacts with the rail head 108 of rail along 201; Visit wheel outer casing 202 and refer to the fender along outside at wheel, visit wheel inner casing 203 and refer to the fender along inner side at wheel, this two block protections plate is mainly to block wheel along sheet, shields; Visiting wheel circuit module 204 is placed in the middle circuit card slot of spy wheel inner casing.Several are taken turns along sheet 205 and embed and take turns along in 201, and visiting wheel circuit module 204 has being connected of power lead and signal wire with the wheel embedding in wheel edge along the ultrasonic probe array of sheet.
As shown in Fig. 5～7, be single wheel along an embodiment schematic diagram of the inner each cell layout of sheet of the present invention.Wheel is formed by stacking by taking turns along sheet sheet base and entrant sound adventitia along sheet, and wheel is along the embedded array ultrasonic probe of sheet sheet base and pressure transducer.Wherein Fig. 5 is wheel side plan view outside sheet, after this surface stack entrant sound adventitia, contacts with Rail Surface.Wheel selects elastomeric material to make along sheet sheet base 301, and wheel is filled by entrant sound coupling liquid along the micro gap between sheet sheet base and entrant sound adventitia.Wheel is along embedded 5 ultrasonic probes circle of sheet sheet base 301 battle array, and the centre of each circle battle array, for sending probe, makes a circle as receiving transducer in week; The probe degree of tilt (angle of ultrasonic probe and rail xsect) of array ultrasonic probe has 0 °, 30 ° ~ 50 °, 60 ° ~ 80 ° three kinds, and the probe degree of tilt of each circle battle array is consistent.Adopt the probe circle battle array 302 that 0 ° of pitch angle is arranged to be positioned at whole middle part of taking turns along sheet, be used for surveying horizontal crackle and the longitudinal crack of rail head 108, the web of the rail 109 and the flange of rail 110; Adopt the probe circle battle array 303 of 30 ° ~ 50 ° pitch angle layouts, be positioned at the working direction on the two side wheel edges parallel with rail length direction, be used for surveying the damage at the web of the rail and bolt hole place; The probe circle battle array 304 that 60 ° ~ 80 ° pitch angle arrange of sampling, be positioned at the probe circle battle array 303 of arranging at 30 ° ~ 50 ° pitch angle after, be used for finding core wound or the transverse fissure in rail head.
Fig. 6 is that wheel is along sheet inner side plane figure, pressure transducer 305 is arranged in the wheel on this surface along the middle part of sheet sheet base 301, its function is to detect the pressure state of wheel along sheet, produces contact trigger pip in the time pressure being detected, produces and depart from trigger pip in the time detecting that pressure is removed.
Fig. 7 is the probe distribution plan of a burst of row of probe circle, and the centre of probe circle battle array is for sending probe, makes a circle that what arrange is receiving transducer week, and being 1 and sending probe 306 shown in Fig. 7, send probe and arranges 7 receiving transducers 307 around.Continue to use the detection principle of traditional wheel seach unit and launch ultrasound wave to rail, while having hurt, its reflection paths is to be roughly consistent with transmission path, so will keep the degree of tilt direction of sending and receiving ultrasonic probe constant.The information that multiple receiving transducers receive is many and abundant, can avoid undetected.
As shown in Figure 8,9, be visit wheel circuit module and with wheel along connection diagram and the structured flowchart of sheet sheet base.Visiting wheel circuit module 204 comprises battery 401, ultrasonic transceiver circuit 402, visits the cable connection between wheel wireless communication module 403 and unit and be connected (comprising signal wire 404 and power lead 405) with wheel along the cable of sheet sheet base.Battery 401 adopts minicell, and minicell is fixed in the circuit card slot of visiting in the middle of wheel inner casing together with ultrasonic transceiver circuit, spy wheel wireless communication module with resilient material.
As shown in Figure 9, described battery is connected with ultrasonic transceiver circuit and spy wheel wireless communication module respectively, and is connected along the array ultrasonic probe of sheet sheet base 301 with wheel; Ultrasonic transceiver circuit is connected along the array ultrasonic probe of sheet sheet base with wheel by wire cable; Ultrasonic transceiver circuit is transmitted to corresponding ultrasonic probe in array ultrasonic probe, the ultrasonic transceiver circuit reflection wave signal that also each ultrasonic probe of buffer memory receives by continuous multifrequency Modulated Ultrasonic ripple signal by wire cable; Visit wheel wireless communication module the continuous multifrequency Modulated Ultrasonic ripple signal of background processing system generation is sent to ultrasonic transceiver circuit, the reflection wave signal simultaneously each ultrasonic probe being received and the signal of pressure transducer send background processing system to and process.
When visiting wheel while rolling forward along rail raceway surface 105, each take turns along sheet from press to rail to depart from rail during this period of time in, and rail is close to maintenance transfixion.During this period of time, wheel sends (or reception) 2 ~ 5MH along the array ultrasonic probe in sheet sheet base by the control of background processing system
zthe continuous modulation ultrasound wave not waiting.Wheel is furnished with along sheet three kinds of array ultrasonic probes that degree of tilt is 0 °, 30 ° ~ 50 ° and 60 ° ~ 80 °, the round battle array of probe that adopts 0 ° of pitch angle to arrange is positioned at the middle part of whole array, transmitting ultrasonic frequency is 3 ~ 4MHz, is used for surveying horizontal crackle and the longitudinal crack of rail head, the web of the rail and the flange of rail; Adopt 30 ° ~ 50 ° probe circle battle arrays of arranging with 60 ° ~ 80 ° pitch angle to be positioned at the both sides parallel with rail length direction; 30 ° ~ 50 ° probes that pitch angle is arranged, transmitting ultrasonic frequency is 2 ~ 3MHz, is used for surveying the damage at the web of the rail and bolt hole place; 60 ° ~ 80 ° probes that pitch angle is arranged, transmitting ultrasonic frequency is 4 ~ 5MHz, is used for finding core wound or the transverse fissure in rail head.
As shown in figure 10, be the connection diagram of visiting wheel and background processing system.The data that background processing system is obtained array ultrasonic probe carry out carrying out flaw detection processing and result shows.Obtaining of data is that backstage wireless communication module 501 by background processing system obtains, this module is positioned over the junction of transverse axis connecting link and longitudinal axis connecting link, it is relative with the spy wheel circuit module 204 in the middle of visiting wheel inner casing, in same level height, the backstage wireless communication module of background processing system is taken turns wireless communication module 403 with the spy in the spy wheel circuit module 204 of visiting in the middle of wheel inner casing and is just easy to realize short-range high-speed radio transmission like this.It is that the processing module that passes to background processing system through wired mode is carried out analyzing and processing that backstage wireless communication module 501 obtains after data.
Wireless communication module in embodiment adopts the super broad band radio communication (UWB) that belongs to short-range transmission technique, and communication module inner structure block diagram as shown in figure 11.The composition of wireless communication module comprises pulse producer, pulse positon modulator, active crystal oscillator, power amplifier, low noise amplifier, radio-frequency filter, multiplier, low-pass filter, sampling/detecting device and UWB antenna.The production process of UWB signal is: active crystal oscillator produces reference square wave signal, and input pulse generator produces basic UWB signal.Basic UWB signal is transfused to pulse positon modulator, simultaneously pulse positon modulator transmits according to ultrasonic transceiver circuit or pressure transducer, and digital signal after analog to digital conversion, basic UWB signal is carried out producing modulating uwb signal after pulse-position modulation, and modulating uwb signal is transfused to after power amplifier amplifies goes out through UWB aerial radiation.The receiving course of UWB signal is: the UWB signal that in background process subsystem, wireless communication module transmits is taken turns along UWB antenna reception in sheet, is then transfused to successively low noise amplifier, radio-frequency filter and multiplier.The basic UWB signal of simultaneous processing received pulse generator input, to after two signal multiplications, input low-pass filter, filtered signal is transfused to that sampling/detecting device is sampled and detection obtains digital signal input converter reduction multifrequency continuous modulation ultrasonic signal and reaches ultrasonic transceiver circuit.
Being that embodiment is single as shown in figure 12 takes turns along sheet single workflow diagram, and that suppose short-distance wireless communication employing is UEB, and it carries out lossless detection to rail and comprises the following steps:
(1) wheel is after sheet contact rail, and wheel is experienced pressure along the pressure transducer in sheet sheet base, takes turns wireless communication module reach background processing system after generation contact trigger pip by spy;
(2) background processing system receives contact and controls this after trigger pip and take turns along sheet in running order; Wheel comprises sending and receiving along the duty of the ultrasonic probe in sheet; If at a time background processing system judges that certain takes turns along sheet in running order, this is taken turns along the center probe of all arrays of sheet and should be emission state, according to the pitch angle of array probe, produce different continuous multifrequency Modulated Ultrasonic ripple signals and reach this by the backstage wireless communication module of background processing system and take turns along sheet; As: certain takes turns the center probe A of the linear transducer array A arranging along 0 ° of pitch angle of sheet
0for emission state, produce the continuous multifrequency Modulated Ultrasonic ripple signal of 3 ~ 4MHz, certain takes turns the center probe B of the linear transducer array B arranging along 30 ° ~ 50 ° pitch angle of sheet
0for emission state, produce the continuous multifrequency Modulated Ultrasonic ripple signal of 2 ~ 3MHz, certain takes turns the center probe C of the linear transducer array C arranging along 60 ° ~ 80 ° pitch angle of sheet
0for emission state, produce the continuous multifrequency Modulated Ultrasonic ripple signal of 4 ~ 5MHz;
(3) wheel receives along the spy wheel wireless communication module on sheet the signal that background processing system transmits, and transfers to ultrasonic transceiver circuit; The ultrasound wave that ultrasonic transceiver circuit sends corresponding frequencies according to the corresponding ultrasonic probe of continuous multifrequency Modulated Ultrasonic ripple signal controlling transmitting carries out rail examination;
(4) be positioned at the center probe A of linear transducer array A
0the direction that the ultrasound wave sending reflects through rail has some center probe A that are positioned at linear transducer array A
0a circle probe A around
1.。。a
n, all in accepting state, ultrasonic probe A
1.。。a
nreceive from ultrasonic probe A
0the ultrasonic signal that sends and return through rail internal reflection, reaches background processing system through visiting wheel wireless communication module.Other linear transducer array is also similar, center probe transmitting, and a circle probe around receives echo;
(5) echo that background processing system receives the each linear transducer array receiving processes and hurt detects.As receive ultrasonic probe A
1.。。a
nreceive after echoed signal, transfer to background processing system, background processing system is carried out analyzing and processing to signal, judges that ultrasound beamformer is from probe A
0send through rail and reflex to ultrasonic probe A
1.。。a
npath in rail have not damaged.The display module of background processing system shows situation about detecting in real time, and hurt position, shape, hurt classification is shown;
(6) in the time that wheel departs from rail along sheet, wheel is experienced pressure along the pressure transducer in sheet sheet base and is disappeared, and generation departs from trigger pip and reaches background processing system by wheel along the spy wheel wireless communication module in sheet;
(7) background processing system judges that epicycle departs from rail along sheet after receiving and departing from trigger pip, takes turns along the transmitting-receiving of sheet ultrasonic signal so stop this, and this is taken turns along sheet in waiting status, until next circulation starts.
Note: the A(of linear transducer array shown in Figure 12 center probe A 0 is launched, the center probe A 0 of a linear transducer array A circle probe A 1 around
.。。aN receives) workflow signal, other linear transducer array is also same workflow.
Claims (7)
- One kind based on wireless Split toothed wheel the steel rail flaw detection device along formula linear transducer array, it is characterized in that comprising multiple spy wheels, connecting link, supporter and a background processing system, wherein visit wheel and comprise that being equipped with several takes turns the wheel edge along sheet, visit wheel inner casing, visit wheel outer casing, and visit and take turns circuit module, visiting wheel circuit module is placed in the middle circuit card slot of spy wheel inner casing, visit transmission and collection that wheel mainly completes detectable signal, be not used as load capacity, multiple spy wheels hang on an inspection car by connecting link and supporter or run on train, can survey by double track simultaneously, the detection data that background processing system is obtained spy wheel carries out carrying out flaw detection processing and result shows.
- According to claim 1 based on wireless Split toothed wheel the steel rail flaw detection device along formula linear transducer array, it is characterized in that described wheel along taking turns along sheet and tile and form side by side by several, described wheel along sheet is formed by stacking by taking turns along sheet sheet base and entrant sound adventitia, wheel embeds several ultrasonic probes along sheet sheet base, ultrasonic probe is many arrayed, each array can be circle battle array, square formation etc., and the center probe of each array is popped one's head in for sending, around be receiving transducer; Probe degree of tilt (angle of ultrasonic probe and rail xsect) has 0 °, 30 ° ~ 50 °, 60 ° ~ 80 ° three kinds, the probe degree of tilt of each array is consistent, the linear transducer array that adopts 0 ° of pitch angle to arrange is generally positioned at the middle part of many arrayed, transmission frequency is 3 ~ 4MHz, is used for surveying horizontal crackle and the longitudinal crack of rail head, the web of the rail and the flange of rail; Adopt 30 ° ~ 50 ° linear transducer arrays of arranging with 60 ° ~ 80 ° pitch angle to be positioned at the both sides parallel with rail length direction, 30 ° ~ 50 ° probes that pitch angle is arranged, the ultrasound wave that transmission frequency is 2 ~ 3MHz, is used for surveying the damage at the web of the rail and bolt hole place; 60 ° ~ 80 ° probes that pitch angle is arranged, transmission frequency is the ultrasound wave of 4 ~ 5MHz, is used for finding core wound or the transverse fissure in rail head, and described wheel along sheet sheet base is also furnished with pressure transducer, it is placed in the middle part of wheel along sheet sheet base, is responsible for detecting the pressure state of wheel along sheet; Wheel adopts elastomeric material along sheet sheet base, and wheel is filled by entrant sound coupling liquid along the gap between sheet sheet base and entrant sound adventitia.
- According to claim 1 based on wireless Split toothed wheel the steel rail flaw detection device along formula linear transducer array, it is characterized in that described spy wheel circuit module comprises battery, ultrasonic transceiver circuit and spy wheel wireless communication module and visits the stube cable between wheel circuit module unit, described battery is connected with ultrasonic transceiver circuit and spy wheel wireless communication module respectively, also be connected along the linear transducer array of sheet sheet base with wheel, ultrasonic transceiver circuit is connected along the linear transducer array of sheet sheet base with wheel, ultrasonic transceiver circuit is transmitted to wheel along corresponding ultrasonic probe in the linear transducer array of sheet sheet base by continuous multifrequency Modulated Ultrasonic ripple signal, the ultrasonic transceiver circuit reflection wave signal that also each ultrasonic probe of buffer memory receives, visit wheel wireless communication module the continuous multifrequency Modulated Ultrasonic ripple signal of background processing system generation is sent to ultrasonic transceiver circuit, the reflection wave signal simultaneously each ultrasonic probe being received and the signal of pressure transducer send background processing system to and process, described battery adopts minicell, resilient material and ultrasonic transceiver circuit for minicell, visiting wheel wireless communication module is fixed in the middle circuit card slot of spy wheel inner casing together, middle circuit card slot and the connecting link of spy wheel inner casing that be positioned at that wheel circuit module is visited in placement communicates.
- According to claim 1 based on wireless Split toothed wheel the steel rail flaw detection device along formula linear transducer array, it is characterized in that described background processing system comprises backstage wireless communication module, processing module, display module, human-computer interaction module, backstage wireless communication module is corresponding with the spy wheel wireless communication module of visiting the spy wheel circuit module in wheel, be positioned in connecting link, carry out short-range radio communication; Processing module is that the ultrasound echo signal that wheel is collected along formula linear transducer array is processed quickly and efficiently, detects the position that has or not hurt and hurt; Display module shows situation about detecting in real time, and hurt position, shape, hurt classification is shown; Human-computer interaction module can carry out manual control to the result store of the control parameter of the duration parameters of transmitted signal, demonstration, detection.
- According to claim 1 based on wireless Split toothed wheel the steel rail flaw detection device along formula linear transducer array, it is characterized in that described background processing system carries out carrying out flaw detection processing and result to wheel along the data that in sheet sheet base, array ultrasonic probe obtains and show, obtaining of data is the backstage wireless communication module acquisition by background processing system, this module is positioned in connecting link, it is relative with the spy wheel circuit module in the middle of visiting wheel inner casing, in same level height, the backstage wireless communication module of background processing system is taken turns wireless communication module with the spy in the spy wheel circuit module of visiting in the middle of wheel inner casing and is just easy to realize short-range high-speed radio transmission like this, it is that the processing module that passes to background processing system through wired mode is carried out analyzing and processing that backstage wireless communication module obtains after data.
- 6. the rail examination method along formula linear transducer array based on wireless Split toothed wheel, comprises the steps:(1) wheel is after sheet contact rail, and wheel is experienced pressure along the pressure transducer in sheet sheet base, takes turns wireless communication module reach background processing system after generation contact trigger pip by spy;(2) background processing system receives contact and controls this after trigger pip and take turns along sheet in running order; Wheel comprises sending and receiving along the duty of the ultrasonic probe in sheet; If at a time background processing system judges that certain takes turns along sheet in running order, this is taken turns along the center probe of all arrays of sheet and should be emission state, according to the pitch angle of array probe, produce different continuous multifrequency Modulated Ultrasonic ripple signals and reach this by the backstage wireless communication module of background processing system and take turns along sheet; As: certain takes turns the center probe A of the linear transducer array A arranging along 0 ° of pitch angle of sheet 0for emission state, produce the continuous multifrequency Modulated Ultrasonic ripple signal of 3 ~ 4MHz, certain takes turns the center probe B of the linear transducer array B arranging along 30 ° ~ 50 ° pitch angle of sheet 0for emission state, produce the continuous multifrequency Modulated Ultrasonic ripple signal of 2 ~ 3MHz, certain takes turns the center probe C of the linear transducer array C arranging along 60 ° ~ 80 ° pitch angle of sheet 0for emission state, produce the continuous multifrequency Modulated Ultrasonic ripple signal of 4 ~ 5MHz;(3) wheel receives along the spy wheel wireless communication module on sheet the signal that background processing system transmits, and transfers to ultrasonic transceiver circuit; The ultrasound wave that ultrasonic transceiver circuit sends corresponding frequencies according to the corresponding ultrasonic probe of continuous multifrequency Modulated Ultrasonic ripple signal controlling transmitting carries out rail examination;(4) be positioned at the center probe A of linear transducer array A 0the direction that the ultrasound wave sending reflects through rail has some center probe A that are positioned at linear transducer array A 0probe A around 1a n, all in accepting state, ultrasonic probe A 1a nreceive from ultrasonic probe A 0the ultrasonic signal that sends and return through rail internal reflection, reaches background processing system through visiting wheel wireless communication module, and other linear transducer array is also similar, center probe transmitting, and probe around receives echo;(5) echo that background processing system receives the each linear transducer array receiving processes and hurt detects, as received ultrasonic probe A 1a nreceive after echoed signal, transfer to background processing system, background processing system is carried out analyzing and processing to signal, judges that ultrasound beamformer is from probe A 0send through rail and reflex to ultrasonic probe A 1a npath in rail have not damaged, the display module of background processing system shows situation about detecting in real time, and hurt position, shape, hurt classification is shown;(6) in the time that wheel departs from rail along sheet, wheel is experienced pressure along the pressure transducer in sheet sheet base and is disappeared, and generation departs from trigger pip and reaches background processing system by wheel along the spy wheel wireless communication module in sheet; Background processing system judges that epicycle departs from rail along sheet after receiving and departing from trigger pip, takes turns along the transmitting-receiving of sheet ultrasonic signal so stop this, and this is taken turns along sheet in waiting status, until next circulation starts.
- According to claim 6 based on wireless Split toothed wheel the rail examination method along formula linear transducer array, linear transducer array keeps the degree of tilt direction of sending and receiving ultrasonic probe constant, to the ultrasound wave of three kinds of different directions of rail transmitting and different frequency, while having hurt, its reflection paths is consistent with transmission path, just can judge corresponding rail head according to the ultrasound beamformer of three kinds of degree of tilt and reflected beam thereof, whether the web of the rail and the flange of rail there is horizontal crackle or longitudinal crack, the time of returning according to reflection wave, energy and waveform just can directly be determined the position of crackle, shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410134081.4A CN103913511A (en) | 2013-11-06 | 2014-04-04 | Steel rail flaw detection device and steel rail flaw detection method based on wireless split wheel edge-type probe arrays |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310543595.0 | 2013-11-06 | ||
| CN201310543595 | 2013-11-06 | ||
| CN201410134081.4A CN103913511A (en) | 2013-11-06 | 2014-04-04 | Steel rail flaw detection device and steel rail flaw detection method based on wireless split wheel edge-type probe arrays |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103913511A true CN103913511A (en) | 2014-07-09 |
Family
ID=51039352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410134081.4A Pending CN103913511A (en) | 2013-11-06 | 2014-04-04 | Steel rail flaw detection device and steel rail flaw detection method based on wireless split wheel edge-type probe arrays |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103913511A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104309641A (en) * | 2014-10-15 | 2015-01-28 | 北京新联铁科技股份有限公司 | Flaw detection system for rail transit line |
| CN106198733A (en) * | 2016-08-22 | 2016-12-07 | 合肥德泰科通测控技术有限公司 | A kind of method in machinery rail ultrasonic listening crack |
| CN106353400A (en) * | 2016-08-25 | 2017-01-25 | 上海市东方海事工程技术有限公司 | Ultrasonic wheel detector detection device |
| CN106896157A (en) * | 2017-03-16 | 2017-06-27 | 华南理工大学 | Based on the 3D ultrasonic rail examination method and devices of splicing visualization apart from self adaptation |
| CN107271559A (en) * | 2017-08-03 | 2017-10-20 | 南通友联数码技术开发有限公司 | A kind of master-slave structure steel rail welding line ultrasonic testing system |
| CN108254663A (en) * | 2018-04-11 | 2018-07-06 | 广东电网有限责任公司 | A kind of novel cable insulating sheath fault location probe and positioning device |
| CN113433224A (en) * | 2021-06-09 | 2021-09-24 | 北京世纪东方通讯设备有限公司 | Double-rail ultrasonic flaw detector and ultrasonic flaw detection method |
| CN113625269A (en) * | 2021-08-26 | 2021-11-09 | 长沙理工大学 | High-speed railway steel rail settlement detection method and system based on millimeter wave radar |
| CN114076796A (en) * | 2020-08-17 | 2022-02-22 | 北京新科启源科技有限公司 | Device and method for detecting vertical cracks of track |
| CN114624336A (en) * | 2022-05-16 | 2022-06-14 | 四川升拓检测技术股份有限公司 | Signal detection device and method based on wheel type sound insulation impact echo acoustic frequency method |
| CN114813971A (en) * | 2022-06-30 | 2022-07-29 | 广东汕头超声电子股份有限公司 | Steel rail probe development test method and test platform |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080015443A1 (en) * | 2006-07-12 | 2008-01-17 | Kabushiki Kaisha Toshiba | Two-dimensional array ultrasonic probe |
| CN201066348Y (en) * | 2007-06-07 | 2008-05-28 | 章罕 | Ultrasonic wave wheel probe |
| CN201882114U (en) * | 2010-12-01 | 2011-06-29 | 南车洛阳机车有限公司 | Rail flaw detector car for urban light rail transit |
| CN102445495A (en) * | 2011-09-28 | 2012-05-09 | 上海铁路局科学技术研究所 | Automatic dual-rail flaw detection system |
| CN102565198A (en) * | 2011-12-27 | 2012-07-11 | 华南理工大学 | Wireless ultrasonic probe assembly for flaw detection of crawler-type steel rail and flaw detection method of wireless ultrasonic probe assembly |
| CN102865839A (en) * | 2012-09-21 | 2013-01-09 | 华南理工大学 | Ultrasound thickness measuring method and device based on broadband frequency-modulation and receiving compensation |
-
2014
- 2014-04-04 CN CN201410134081.4A patent/CN103913511A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080015443A1 (en) * | 2006-07-12 | 2008-01-17 | Kabushiki Kaisha Toshiba | Two-dimensional array ultrasonic probe |
| CN201066348Y (en) * | 2007-06-07 | 2008-05-28 | 章罕 | Ultrasonic wave wheel probe |
| CN201882114U (en) * | 2010-12-01 | 2011-06-29 | 南车洛阳机车有限公司 | Rail flaw detector car for urban light rail transit |
| CN102445495A (en) * | 2011-09-28 | 2012-05-09 | 上海铁路局科学技术研究所 | Automatic dual-rail flaw detection system |
| CN102565198A (en) * | 2011-12-27 | 2012-07-11 | 华南理工大学 | Wireless ultrasonic probe assembly for flaw detection of crawler-type steel rail and flaw detection method of wireless ultrasonic probe assembly |
| CN102865839A (en) * | 2012-09-21 | 2013-01-09 | 华南理工大学 | Ultrasound thickness measuring method and device based on broadband frequency-modulation and receiving compensation |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104309641A (en) * | 2014-10-15 | 2015-01-28 | 北京新联铁科技股份有限公司 | Flaw detection system for rail transit line |
| CN106198733A (en) * | 2016-08-22 | 2016-12-07 | 合肥德泰科通测控技术有限公司 | A kind of method in machinery rail ultrasonic listening crack |
| CN106353400A (en) * | 2016-08-25 | 2017-01-25 | 上海市东方海事工程技术有限公司 | Ultrasonic wheel detector detection device |
| CN106353400B (en) * | 2016-08-25 | 2023-11-24 | 上海市东方海事工程技术有限公司 | Ultrasonic detection wheel detection device |
| CN106896157B (en) * | 2017-03-16 | 2023-04-21 | 华南理工大学 | 3D splicing visual ultrasonic steel rail flaw detection method and device based on distance self-adaption |
| CN106896157A (en) * | 2017-03-16 | 2017-06-27 | 华南理工大学 | Based on the 3D ultrasonic rail examination method and devices of splicing visualization apart from self adaptation |
| CN107271559A (en) * | 2017-08-03 | 2017-10-20 | 南通友联数码技术开发有限公司 | A kind of master-slave structure steel rail welding line ultrasonic testing system |
| CN107271559B (en) * | 2017-08-03 | 2024-02-27 | 南通友联数码技术开发有限公司 | Master-slave machine structure steel rail welding seam ultrasonic detection system |
| CN108254663A (en) * | 2018-04-11 | 2018-07-06 | 广东电网有限责任公司 | A kind of novel cable insulating sheath fault location probe and positioning device |
| CN114076796A (en) * | 2020-08-17 | 2022-02-22 | 北京新科启源科技有限公司 | Device and method for detecting vertical cracks of track |
| CN113433224A (en) * | 2021-06-09 | 2021-09-24 | 北京世纪东方通讯设备有限公司 | Double-rail ultrasonic flaw detector and ultrasonic flaw detection method |
| CN113625269A (en) * | 2021-08-26 | 2021-11-09 | 长沙理工大学 | High-speed railway steel rail settlement detection method and system based on millimeter wave radar |
| CN113625269B (en) * | 2021-08-26 | 2024-03-01 | 长沙理工大学 | High-speed railway steel rail settlement detection method and system based on millimeter wave radar |
| CN114624336B (en) * | 2022-05-16 | 2022-09-02 | 四川升拓检测技术股份有限公司 | Signal detection device and method based on wheel type sound insulation impact echo acoustic frequency method |
| CN114624336A (en) * | 2022-05-16 | 2022-06-14 | 四川升拓检测技术股份有限公司 | Signal detection device and method based on wheel type sound insulation impact echo acoustic frequency method |
| CN114813971A (en) * | 2022-06-30 | 2022-07-29 | 广东汕头超声电子股份有限公司 | Steel rail probe development test method and test platform |
| CN114813971B (en) * | 2022-06-30 | 2022-09-30 | 广东汕头超声电子股份有限公司 | Steel rail probe development test method and test platform |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103913511A (en) | Steel rail flaw detection device and steel rail flaw detection method based on wireless split wheel edge-type probe arrays | |
| CN102565198B (en) | Wireless ultrasonic probe assembly for flaw detection of crawler-type steel rail and flaw detection method of wireless ultrasonic probe assembly | |
| CN105136905B (en) | Seamed high-speed steel rail supersonic sounding imaging method and device based on space-time four-dimension wideband array | |
| US20190101643A1 (en) | Device and method for detecting main acoustic indexes of multi-beam sonar | |
| CN107436326B (en) | Rapid nondestructive detection device and method for structural defects under high-speed railway track | |
| CN103499843B (en) | Vehicular transient electromagnetic quick exploration device and measuring method | |
| CN105403242A (en) | Locomotive pantograph-catenary hard point photoelectric vibration comprehensive detection and GPS positioning method and system | |
| CN102269816B (en) | Ultrasonic underwater microtopography detection testing device and method | |
| CN106340188A (en) | Roadside parking space detection device and detecting method thereof | |
| CN102288883A (en) | Oscillation wave partial discharge identifying and positioning method for asynchronous double-end power cable | |
| CN108344801B (en) | Equipment and method for detecting mortar bonding quality of CRTS II slab ballastless track | |
| CN108982670B (en) | Electromagnetic ultrasonic probe for nondestructive detection of water pipe | |
| CN101398410A (en) | Steel rail defect detection method by electromagnetical ultrasonic technology and device thereof | |
| CN100561213C (en) | The robot of ultrasonic inspection of petroleum pipeline and detection usefulness | |
| CN102230915A (en) | Device and method for flaw detection of small crawler-type rails based on three-way ultrasonic diffraction | |
| CN103760236A (en) | Double-track crawler-type steel rail flaw detection device and frequency-conversion flaw detection method thereof | |
| CN101696954B (en) | Electromagnetic tomography nondestructive inspection device for severe fault of rail and method thereof | |
| CN103245968A (en) | Rolling type motion sensor device and using method thereof | |
| CN105571751A (en) | Seamless steel rail stress detection device and method based on ultrasonic guided-wave linear array | |
| CN105259426A (en) | Radiation field spatial distribution measurement apparatus and method of thermo-acoustic effect | |
| CN103021255B (en) | Simulation experiment device used for testing radar | |
| CN101706477A (en) | Detector and method based on electromagnetic ultrasonic oblique incidence body wave | |
| CN107110828A (en) | Device, method and system for ultrasonic signal sensor | |
| CN103105434B (en) | Elongated metal structure damage detecting method and system based on active acoustic emission method | |
| CN110261481B (en) | Point pressure type acquisition device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140709 |