EP3510352A1 - Système et procédé d'acquisition de caractéristiques d'au moins une roue d'un véhicule ferroviaire - Google Patents

Système et procédé d'acquisition de caractéristiques d'au moins une roue d'un véhicule ferroviaire

Info

Publication number
EP3510352A1
EP3510352A1 EP17768715.9A EP17768715A EP3510352A1 EP 3510352 A1 EP3510352 A1 EP 3510352A1 EP 17768715 A EP17768715 A EP 17768715A EP 3510352 A1 EP3510352 A1 EP 3510352A1
Authority
EP
European Patent Office
Prior art keywords
wheel
data set
rail
detection device
detection
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.)
Withdrawn
Application number
EP17768715.9A
Other languages
German (de)
English (en)
Inventor
Barbara Nowaczyk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nowa3k GmbH
Original Assignee
Nowa3k GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nowa3k GmbH filed Critical Nowa3k GmbH
Publication of EP3510352A1 publication Critical patent/EP3510352A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • G01B11/245—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures using a plurality of fixed, simultaneously operating transducers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
    • B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
    • B61K9/12—Measuring or surveying wheel-rims
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
    • B61L27/50—Trackside diagnosis or maintenance, e.g. software upgrades
    • B61L27/57—Trackside diagnosis or maintenance, e.g. software upgrades for vehicles or trains, e.g. trackside supervision of train conditions
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00—Testing of vehicles
    • G01M17/08—Railway vehicles
    • G01M17/10—Suspensions, axles or wheels
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0004—Industrial image inspection
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/50—Depth or shape recovery
    • G06T7/55—Depth or shape recovery from multiple images
    • G06T7/557—Depth or shape recovery from multiple images from light fields, e.g. from plenoptic cameras
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/60—Analysis of geometric attributes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/90—Arrangement of cameras or camera modules, e.g. multiple cameras in TV studios or sports stadiums
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/95—Computational photography systems, e.g. light-field imaging systems
    • H04N23/957—Light-field or plenoptic cameras or camera modules
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10048—Infrared image
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10052—Images from lightfield camera
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30108—Industrial image inspection
    • G06T2207/30164—Workpiece; Machine component
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30248—Vehicle exterior or interior
    • G06T2207/30252—Vehicle exterior; Vicinity of vehicle

Definitions

  • the invention relates to a system and a method for detecting properties of a wheel and / or a wheelset of a rail vehicle, in particular a geometric actual state of the wheel and / or wheelset.
  • the wheels of a rail vehicle are subject by the stress in the operational use of wear or damage and wear.
  • the wear behavior of a wheel of a rail vehicle is influenced, for example, by the mileage, in particular as a function of the track characteristic, the contact force per wheel and the drive and braking forces.
  • continuous loads which lead, for example, to plastic deformation in the area of the tread
  • individual events such as heavy braking are responsible for the wear.
  • the tread is claimed in railways, for example, in trams due to the tight curve radii when driving especially the rim affected by wear.
  • the wear or deformation of the wheels of a rail vehicle is acceptable within predetermined limits and must therefore be checked regularly.
  • the planning of the maintenance of wheels and wheelsets of rail vehicles therefore requires the most accurate knowledge possible of the actual wear behavior in order to avoid unnecessary maintenance or repairs, but at the same time to recognize damage and wear early. For this purpose, every single wheel undergoes a regular check, the intervals of which are often determined on the basis of mileage, but without taking into account the actual load.
  • DE 10 2012 207 427 A1 discloses a method for optically scanning a tread of a wheel of a train. For detecting a camera is arranged such that the rolling on a rail tread of the wheel over its entire circumference by adjusting the depth of field of the camera optically detected and this is then analyzed.
  • EP 1 992 167 B1 discloses a method for measuring properties of wheels of a rail vehicle, in which a reference mark is arranged in the track, which is detected by an image acquisition device of the system in addition to the wheel to be detected.
  • the invention is therefore based on the object to provide a system and a method for determining properties of a wheel and / or wheelset of a rail vehicle, in which the accuracy of the determined properties of the wheel and / or the wheelset in comparison to from the prior Technique known systems and / or methods is increased.
  • the first detection device is a plenoptic camera.
  • Plenoptic cameras are also referred to as light field cameras and are distinguished by the fact that, in addition to the usually detected color and intensity of the radiation, the direction of incident radiation is also determined. is recorded. With the first detection device, the direction of incident radiation can be detected.
  • the captured image data By detecting the direction of the incident radiation, in particular the direction of the incident light, the captured image data also contain information about the image depth, so that there is the possibility of subsequent focusing, namely the focus plane is subsequently adjustable in the detected area.
  • a three-dimensional model of a detected object can be calculated on the basis of the image data of the plenoptic camera.
  • the image data of the first detection device which is embodied as a plenoptic camera
  • a three-dimensional model can be calculated from the first region in which detection takes place with the first detection device.
  • actual dimensions of the wheel can be determined and thus conclusions about the wear of the wheel can be made.
  • the System is arranged on at least a first rail.
  • the system comprises, in particular, at least one first system part, which is arranged on at least one rail of a track.
  • a second system part is provided, which is arranged on a second rail of the track.
  • the track comprises two substantially parallel rails, wherein a passing rail vehicle with the two wheels of a wheelset on each one of the rails is performed.
  • the first part of the system is fastened, for example, to a mounting plate which passes under the rail and is screwed to the rail foot with two clamping plates. On each side of the rail in each case a clamping plate is arranged, which cooperates in particular with threads within the mounting plate.
  • the system is in particular designed to have the properties of a nes passing wheel in a speed range between 0.5 km / h and 100 km / h, in particular between 5 km / h and 15 km / h to detect.
  • the system preferably comprises an evaluation unit which is designed, for example, as a computer system.
  • the evaluation unit is connected to the measuring unit, for example, by means of optical waveguides.
  • the evaluation unit comprises in particular a database in which the acquired data can be stored and retrieved.
  • the evaluation unit is set up in such a way that it evaluates at least the first image data set of the first detection device of the first region.
  • the first image data set is thus evaluated, for example, using the geometric arrangement of the detection devices relative to the rail and / or the wheel in order to obtain a very accurate model of the current surface of the wheel, in particular the tread.
  • the evaluation unit determines, for example, material displacements in the region of the tread and further wear phenomena of the wheel.
  • the data currently determined for this purpose are preferably compared, for example, with known data from the database, for example those which have been acquired by the same wheel at a different earlier time.
  • the system comprises at least one read-out unit for a wheel transponder, e.g. for an RFID chip or a barcode, and / or a wheel load detection unit for measuring the wheel load of the wheel and / or a vibration monitoring unit for detecting vibrations of the wheel.
  • a wheel transponder e.g. for an RFID chip or a barcode
  • a wheel load detection unit for measuring the wheel load of the wheel
  • a vibration monitoring unit for detecting vibrations of the wheel.
  • the accuracy of the image data acquired by the first detection device can be increased according to a first embodiment in that the plenoptic camera has at least one main lens and at least one structured film layer or a lenticular grid between the main lens and at least one image sensor.
  • the structured film layer comprises, for example, a fine grid of lines, which allows conclusions about the direction of the incident radiation.
  • the lens grid causes everyone Refracted pixel and directed to the sensor surface of the image sensor so that the direction of the incident radiation can be determined.
  • the plenoptic camera comprises an image sensor having a plurality of detector layers arranged one behind the other, in particular wherein at least one detector layer is at least partially transparent.
  • the successively arranged detector layers which are preferably made of graphene, a conclusion about the direction of the incident radiation is also possible.
  • the precision with which the properties of at least one wheel of a rail vehicle is detected is increased according to a further embodiment of the system in that at least one second detection device, in particular a second plenoptic camera, is provided, and that the second detection device at least partially a second Be Detected rich on the wheel, preferably that at least a third detection device, in particular a third plenoptic camera, is provided, and that the third detection means at least partially detects a third area on the wheel.
  • the second and / or the third detection device at least partially detect a second or third region on the wheel arranged on the rail, that is to say on the rail or passing. By detecting further areas, the accuracy of the geometrical data of the Rades increased because there are more image data, namely from the first area and / or the second area and / or the third area.
  • the first region and / or the second region each comprise a part of the tread as well as a part of the wheel rim.
  • the third area is directed onto the wheel back and additionally comprises a part of the wheel rim.
  • the system preferably comprises three detection devices. tions, namely a first detection device which is aligned with the first region, a second detection device which is aligned with the second region, and a third detection device which is aligned with the third region.
  • the detection accuracy is further increased by a further embodiment of the system in that at least one first radiation source for emitting radiation of a specific wavelength range is included, and that at least one detection device, ie the first detection device and / or the second detection device and / or the third Er - Recording device, designed to detect the radiation in the wavelength range of the first radiation source.
  • the first radiation source illuminates, for example, at least partially the first region and / or the second region and / or the third region on the wheel arranged on the rail.
  • the first radiation source is aligned with the first region.
  • the first radiation source is designed as an infrared radiation source. If the first radiation source is designed as an infrared radiation source, the detection device or the detection devices are also designed so that radiation in the wavelength range of the infrared radiation of the radiation source can be detected.
  • a second radiation source is provided for the second region and a third radiation source for the third region.
  • a radiation source irradiates the respective area at least partially, preferably completely.
  • the first radiation source and / or the second radiation source and / or the third radiation source are designed as lasers, in particular as infrared lasers.
  • the radiation sources thus emit radiation in a spectral range between 1 mm and 780 nm and a frequency range of 300 GHz to 400 THz.
  • the detection devices are then designed in such a way that they can detect the infrared radiation reflected by the wheel and convert it into image data sets.
  • the functionality of the system is increased according to a further embodiment in that at least one brake detection device is present and that the brake detection device is designed as a plenoptic camera.
  • the system comprises two, in particular three brake detection devices, that is one of the number of provided on a wheel set number of brake discs.
  • the brake detection device, in particular the plenoptic camera is arranged on the rail and aligned such that at least one brake disk of a wheel or wheel set passing on the rail can be detected by the brake detection devices at least at a triggering time. Based on the recorded image data of the geometric properties, the dimensions of the brake disc can be determined and closed on the wear.
  • the control of the system is improved according to a further embodiment by providing that at least one triggering device is present, that the triggering device is aligned with the arranged on the rail wheel and that with the triggering device detection with at least one detection unit can be triggered.
  • the detection device preferably detects the presence of the at least one wheel arranged on the rail and triggers the detection with at least one detection unit at a predetermined triggering time.
  • the triggering device triggers the detection with the first detection unit and / or the second detection unit and / or the third detection unit at a triggering time.
  • the triggering device triggers at least at the time of triggering an emission of radiation with the first radiation source and / or the second radiation source and / or the third radiation source, so that the first area and / or the second area and / or the third area illuminated at the triggering time are.
  • the system has a second triggering device, wherein the second triggering device is likewise aligned with the wheel arranged on the rail, and that by means of the first triggering device and the second triggering device, a detection with at least one detection unit can be triggered.
  • the triggering with at least the first detection unit and / or the second detection unit and / or the third detection unit is triggered at a triggering time with both triggering devices.
  • the triggering devices trigger emission of radiation with the first radiation source and / or the second radiation source and / or the third radiation source at least at the triggering time, so that the first region and / or the second region and / or the third region illuminate at the triggering time are.
  • the first triggering device and the second triggering device are spaced apart in the rail longitudinal direction.
  • a triggering device detects a movement direction facing part of the circumference of the wheel and the second triggering device detects the movement direction facing away from the circumference of the wheel.
  • the system can be improved according to a last embodiment in that a second system part is included, that the second system part is identical to the first system part and that the second system part is arranged on the second rail of the track.
  • the second system part is preferably designed and set up such that a second wheel of a rail vehicle, preferably the second wheel assigned to the wheel set of the first wheel, can be detected.
  • the first wheel and the second wheel of a wheel set can be detected simultaneously with a first system part and a second system part and the properties determined.
  • characteristics of the first wheel and of the second wheel are detected simultaneously with a triggering time with the first system part and the second system part.
  • software-controlled evaluations can make statements regarding the positioning of the first wheel and the second wheel relative to one another, since the mounting positions and orientation of the detection devices of the first system part and the second system part are also relatively independent. nander, are completely known. For this purpose, it is provided that the alignment and mounting positions of all detection devices and / or radiation sources, in particular also relative to one another, are taken into account in the evaluation by the evaluation unit in order to determine properties of the wheelset.
  • the object mentioned at the outset is furthermore achieved by a method for determining properties of a wheel, a rail vehicle, which is characterized by the following steps:
  • the arranged on a rail, so standing on the rail or passing wheel is thus detected with the first detection device and generates an image data set.
  • image data set On the basis of this image data set any geometrical properties, ie dimensions of the wheel are determined and so set the maintenance intervals or a required maintenance of the wheel.
  • a first embodiment of the method provides that an additional method step is included, namely the calculation of a model data record using the first image data set, wherein the model data set as a three-dimensional, at least partially model of the first wheel can be displayed.
  • the model data set is calculated from the image data set by converting the data into a three-dimensional at least partial model of the wheel. The converted data can then be used to determine the geometric properties of the wheel.
  • the method is also advantageously formed by the fact that at least at the time of triggering, ie at the time at which a detection takes place with at least the first detection unit, a projection of radiation with at least one first radiation source in at least the first area.
  • a projection of radiation with at least one first radiation source in at least the first area is illuminated with the radiation source, whereby the quality of the image data acquired by the detection unit is increased.
  • the projection takes place in the non-visible, that is to say in the infrared region which is not visible to the human eye.
  • the detection takes place simultaneously with a first detection unit, a second detection unit and a third detection unit, wherein the triggering time also a projection with a first radiation source, a second radiation source in the second region and a third radiation source in the third region.
  • the method is advantageously further developed in that a profile data set is calculated from the model data record and that the profile data set is compared with at least one further profile data record stored in a database and that changes in the geometric properties of the wheel are determined by this comparison.
  • the profile data set represents all image data - if present - of the first detection device and / or the second detection device and / or the third detection device.
  • 1 shows an embodiment of a system in perspective view
  • 2 shows an embodiment of a system in a sectional view
  • FIG. 5 shows an embodiment of a system in side view
  • Fig. 6 shows an embodiment of a system in front view
  • Fig. 1 shows an exemplary two-dimensional representation of a profile data set
  • Fig. 1 shows a system 1 for detecting properties of at least one wheel 2a, 2b of a rail vehicle - not shown -.
  • the system 1 comprises a first system part 3a and a second system part 3b, which are completely identical.
  • the first system part 3a serves to detect properties of a first wheel 2a
  • the second system part 3b serves to detect the properties of a second wheel 2b of a wheelset.
  • the first system part 3a and the second system part 3b are identical, for which reason reference is made hereinafter to the first system part 3a.
  • FIG. 1 shows that the first system part 3a comprises a first outer housing 6a and a second outer housing 6b.
  • the system 1 is arranged on a track 5 with a first rail 4a and a second rail 4b.
  • the first Outer housing 6a and the second outer housing 6b are arranged on a mounting plate 7, which underruns the rail 4a and is secured by means of clamping plates 8a, 8b at the rail of the rail 4a.
  • the first outer case 6a and the second outer case 6b are designed so that the upper edge is at a height with the rail upper edge or lower.
  • FIG. 2 shows the first system part 3a in a side view with a cut first rail 4a.
  • the mounting plate 7 passes under the rail 4a and is fixed with clamping plates 8a, 8b at the rail of the rail 4a.
  • the outer housing 6a and 6b of the system 1 are attached to the mounting plate 7 and are located with its upper edge at a height with the upper edge of the rail 4a.
  • FIG. 3 shows an exemplary embodiment of a system 1, in particular a first system part 3 a, in plan view.
  • the first system part 3a comprises at least one first detection device 9 which is aligned with a first region 10 of the wheel 2a arranged on the rail 4a and detects it, in particular, at at least one release time.
  • the first system part 3a has a second detection device 1 1 for a second area 13 and a third detection device 14 for a third area 15.
  • the first system part 3a has a first radiation source 16 for emitting radiation into the first region 10, a second radiation source 17 for emitting radiation into the second region 13, and a third radiation source 18 for emitting radiation in the third area 15.
  • the first detection device 9, the second detection device 1 1 and the third detection device 14 are each formed as a plenoptic camera, ie as a light field camera.
  • the plenoptic cameras also detect the direction of the incident radiation, as a result of which an at least partial three-dimensional image of the wheel 2a can be generated.
  • FIG. 3 the embodiment of FIG. 3 can be seen, with the first radiation source 16, the second radiation source 17 and the third radiation source 18 projected electromagnetic radiation, in particular expanded laser beams are exemplified.
  • first detection unit 9 and the second detection unit 11 are arranged on a first side 19 of the rail 4a, while the third detection device 14 is arranged on a second side 20 of the rail 4a is arranged.
  • a first triggering device 21 and a second triggering device 22 are arranged, which set the triggering time for the radiation sources 16, 17, 18 and the detection devices 9, 11, 14 according to defined criteria, so that an emission resp Projection and acquisition in all three areas 10, 13, 15 occurs simultaneously.
  • FIG. 8 shows a schematic sequence of an embodiment of a method for detecting properties of a wheel 2a of a rail vehicle, comprising the following method steps: projection of radiation with at least one first radiation source into at least the first area 10,
  • Calculating 26 of a profile data set using the model data set wherein the profile data set is calculated by transformation of the model data set in a plane, and wherein the profile data set as an at least partial, two-dimensional profile of the first wheel 2a can be displayed.
  • the image data set contains the geometric properties of the wheel 2a in the first area 10, which can be evaluated.
  • this is done according to an embodiment of the method, namely by calculating 25 a model data set (see FIG. 10) using the first image data set, wherein the model data set can be displayed as a three-dimensional, at least partial model of the first wheel 2a.
  • a calculation 26 of a profile data record from the model data record is performed.
  • the profile data record serves as the basis for the determination of the geometric properties of the wheel 2a, for example the height and width of the wheel rim, the profile of the running surface etc.
  • An exemplary three-dimensional representation of the wheel 2a, namely a model data set can be seen in FIG. an exemplary two-dimensional representation of the profile of the wheel 2a in the region of the tread and the rim, namely the profile data set is shown in Fig. 1 1.
  • 9 shows an overview of the determinable geometrical properties of the first wheel 2a and of the second wheel 2b and the properties of the first wheel 2a relative to the second wheel 2b, that is to say the wheel set.
  • the system 1, in particular an evaluation unit, and / or the method are in particular designed and set up so that all dimensions shown in FIG. 9 can be determined individually and / or in combination and / or determined.
  • the system 1 and / or the method is thus set up individually or in combination for determining all the dimensions shown in FIG. 9.
  • the dimensions shown in FIG. 9 are determined from the profile data set and / or the correlation of the profile data set of the first wheel 2 a with the profile data set of the second wheel 2 b as well as the array detection units 9, 1 1, 14.
  • the measuring circle plane distance 29 indicates the distance of the measuring circle plane E1 of the first wheel 2a to the measuring circle plane E2 of the second wheel 2b.
  • the measuring circle plane E1 and the measuring circle plane E2 are arranged such that the axis of rotation of the first wheel 2a and the axis of rotation of the second Rades 2b pass through the measuring circuit plane E1 and the measuring circuit plane E2 substantially orthogonal.
  • the measurement circuit plane E1 and the measurement circuit plane E2 are further arranged such that it is spaced with the Meß Vietnameseebenenabstand- x 30 between about 60 mm and 65 mm from the inner edge 31 a of the first wheel 2a and the inner edge 31 b of the second wheel 2b.
  • the cutting circle of the measuring circle plane E1, E2 with the running surface 32a, 32b defines the contact ring or contact point of the wheel 2a, 2b on a rail 4a, 4b.
  • the dimensions on the wheel rim 33a, 33b are determined in a sectional plane E3 which is arranged orthogonal to the measuring circle plane E1, E2, and in the cross section shown with a measuring circle plane distance-y 34 of about 10 mm from the intersection of the measuring circle plane E1, E2 with the tread 32a, 32b objected.
  • the diameter 35 of the wheel 2a is also determined in the measuring circle plane E1. Further important dimensions of the wheel are the wheel inner diameter 36 and the wheel outer diameter 37 and the wheel tire width 38.
  • the height 39 of the wheel tire is determined in the measuring circle plane E1 between the lower edge of the wheel tire and the point of intersection with the running surface 32a.
  • the cutting plane E3 forms the basis for the dimensioning of the wheel 2a in the region of the wheel rim 33a.
  • the intersections - in the illustrated cross section - the cutting plane E3 with the inner edge 40a of the rim 33b and the outer edge 41a of the rim 33a form the starting point for subsequent dimensions.
  • a first wheel rim width 42 is determined as the distance of the intersections of the wheel rim 33a in the sectional plane E3.
  • a second Radkranzbreite 43 is determined between the inner intersection of the rim 33a with the cutting plane E3 and the inner edge 31a.
  • a Radkranz Tavern 44 is determined from a plane E4, in which the intersection of the measuring circle plane E1 is the running surface 32a, up to the upper edge of the rim 33.
  • the inclination of the inner flank 40a and the outer edge 41 a are described by the angle ⁇ and ß.
  • the inclination of the inner edge 40a can be indicated by the distance 45, which extends through the inner intersection of the cutting plane E3 with the rim 33a on its inner flank 40a and the intersection of the inner flank 40a at a distance 46 between 0.9 mm and 2 mm the top edge of the rim 33a.
  • the flank measure 47 indicates the distance between the outer intersection of the cutting plane E3 with the outer edge 41a of the rim 33a and the inner edge 31a.
  • the system 1 and / or the method are in particular designed and set up so that the dimensions shown in FIG. 9 can also be determined and / or determined as geometric properties of the first wheel 2a relative to the second wheel 2b, in particular by correlation of the profile data set of FIG first wheel 2a with the profile data set of the second wheel and the geometric arrangement of the detection units 9, 1 1, 14th
  • the measuring circle plane distance 29 indicates - as already explained - the distance of the measuring circle plane E1 of the first wheel 2a to the measuring circle plane E2 of the second wheel 2b.
  • the track gauge 50 indicates the distance of the intersections of the inner flanks 40a, 40b with the cutting plane E3.
  • the Leitonne 51 can be determined on both sides and defines the distance of the intersection of the cutting plane E3 with the inner edge 40a of the first wheel 2a and the inner edge 31b of the second wheel 2b.
  • the Leit Vietnameseabstand 52 defines the distance of the intersections of the cutting plane E3 with the outer edges 41 a and 41 b.
  • the Achsschenabstand 53 defines the distance of the inner edges 31 a and 31 b of the first wheel 2 a and 2 b of the second wheel.
  • the model data set comprises a plurality of measurement data points in a three-dimensional coordinate system, preferably as polar coordinates.
  • the measured data points depict the surface of the wheel 2 in the detected regions 10, 13, 15.
  • Fig. 1 shows an example of the data shown a profile data set, namely a two-dimensional profile of the wheel 2 in the region of the tread 32 (see Fig. 9) and the rim 33.
  • On the x-axis is the wheel width and on the y-axis of the Radius of the wheel 2a shown in millimeters. 10
  • all measured data points of the model data set from FIG. 10 have been transformed into a two-dimensional Cartesian coordinate system, so that an average profile of the wheel 2 according to FIG. 11 results in the region of the running surface 32, the wheel rim 33 and the inner edge 31 , Further, the data includes the diameter 35 of the wheel 2a.

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  • Length Measuring Devices By Optical Means (AREA)

Abstract

L'invention concerne un système (1) d'acquisition de caractéristiques d'au moins une roue (2) d'un véhicule ferroviaire. Le système (1) peut être disposé sur au moins un premier rail (4a). Le système (1) comporte au moins un premier dispositif d'acquisition (9). Le premier dispositif d'acquisition (9) est conçu pour capter au moins une première zone (10) d'une roue (2), passant sur le premier rail (4a), d'un véhicule ferroviaire. Un système (1) et un procédé de détermination de caractéristiques d'une roue (2) et/ou d'un essieu d'un véhicule ferroviaire, grâce auxquels la précision des caractéristiques déterminées de la roue (2) et/ou de l'essieu est accrue par rapport à des systèmes (1) et/ou des procédés connus de l'état de la technique, sont réalisés par le fait que le premier dispositif d'acquisition (9) est une caméra plénoptique.
EP17768715.9A 2016-09-07 2017-09-05 Système et procédé d'acquisition de caractéristiques d'au moins une roue d'un véhicule ferroviaire Withdrawn EP3510352A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016116782.7A DE102016116782A1 (de) 2016-09-07 2016-09-07 System und Verfahren zum Erfassen von Eigenschaften mindestens eines Rades eines Schienenfahrzeugs
PCT/EP2017/072269 WO2018046504A1 (fr) 2016-09-07 2017-09-05 Système et procédé d'acquisition de caractéristiques d'au moins une roue d'un véhicule ferroviaire

Publications (1)

Publication Number Publication Date
EP3510352A1 true EP3510352A1 (fr) 2019-07-17

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EP17189501.4A Withdrawn EP3318839A1 (fr) 2016-09-07 2017-09-05 Système et procédé de détection de caractéristiques d'au moins une roue d'un véhicule ferroviaire
EP17768715.9A Withdrawn EP3510352A1 (fr) 2016-09-07 2017-09-05 Système et procédé d'acquisition de caractéristiques d'au moins une roue d'un véhicule ferroviaire

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EP17189501.4A Withdrawn EP3318839A1 (fr) 2016-09-07 2017-09-05 Système et procédé de détection de caractéristiques d'au moins une roue d'un véhicule ferroviaire

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US (1) US20190293411A1 (fr)
EP (2) EP3318839A1 (fr)
DE (1) DE102016116782A1 (fr)
WO (1) WO2018046504A1 (fr)

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FR3068098B1 (fr) * 2017-06-26 2019-08-23 Safran Landing Systems Procede de mesure d’usure des disques de freins d’un aeronef
CN109544623B (zh) * 2018-10-11 2021-07-27 百度在线网络技术（北京）有限公司 车辆损伤区域的测量方法和装置
CN112441064B (zh) * 2019-08-30 2023-02-10 比亚迪股份有限公司 轨道探伤方法、装置、系统和自动化巡检车

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JP3157829B2 (ja) * 1991-09-09 2001-04-16 川鉄情報システム株式会社 鉄道車両用制輪子の自動計測装置
DE19943744B4 (de) * 1999-09-02 2006-01-26 Wolfgang Spruch Verfahren und Vorrichtung zur Radsatzprüfung
GB0216486D0 (en) * 2002-07-16 2002-08-21 Aea Technology Plc Inspection of railway vehicles
DE10313191A1 (de) 2003-03-25 2004-10-07 Gutehoffnungshütte Radsatz Gmbh Verfahren zur berührungslosen dynamischen Erfassung des Profils eines Festkörpers
US7714886B2 (en) 2006-03-07 2010-05-11 Lynxrail Corporation Systems and methods for obtaining improved accuracy measurements of moving rolling stock components
US20090021598A1 (en) 2006-12-06 2009-01-22 Mclean John Miniature integrated multispectral/multipolarization digital camera
EP2244484B1 (fr) 2009-04-22 2012-03-28 Raytrix GmbH Procédé d'imagerie numérique pour synthétiser une image utilisant des données enregistrées avec une caméra plénoptique
US8228417B1 (en) * 2009-07-15 2012-07-24 Adobe Systems Incorporated Focused plenoptic camera employing different apertures or filtering at different microlenses
DE202012001326U1 (de) 2012-02-09 2013-05-13 Stefan Meister Messvorrichtung zur berührungslosen dynamischen Erfassung massgenauen Daten sich bewegender bzw. in Rotation befindlicher Festkörper in ringformiger Auslegung und Nutzung in schienengebundenen Fahrzeugen.
DE102012207427A1 (de) 2012-05-04 2013-11-07 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zur optisch-abtastenden Prüfung einer Radlauffläche eines Rades eines Zuges im Fahrbetrieb, optische Prüfvorrichtung, Prüfsystem und Prüfsystemanordnung sowie Steuermodul
US8925873B2 (en) * 2012-05-24 2015-01-06 International Electronic Machines Corp. Wayside measurement of railcar wheel to rail geometry
US9939251B2 (en) * 2013-03-15 2018-04-10 Sionyx, Llc Three dimensional imaging utilizing stacked imager devices and associated methods
US20160063691A1 (en) * 2014-09-03 2016-03-03 Apple Inc. Plenoptic cameras in manufacturing systems

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Publication number Publication date
US20190293411A1 (en) 2019-09-26
DE102016116782A1 (de) 2018-03-08
EP3318839A1 (fr) 2018-05-09
WO2018046504A1 (fr) 2018-03-15

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