EP4419882A1 - Inspektionsverfahren und inspektionseinrichtung für fahrwerke für schienenfahrzeuge - Google Patents
Inspektionsverfahren und inspektionseinrichtung für fahrwerke für schienenfahrzeugeInfo
- Publication number
- EP4419882A1 EP4419882A1 EP22839739.4A EP22839739A EP4419882A1 EP 4419882 A1 EP4419882 A1 EP 4419882A1 EP 22839739 A EP22839739 A EP 22839739A EP 4419882 A1 EP4419882 A1 EP 4419882A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- inspection
- camera
- test section
- image content
- indicator
- 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
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/08—Testing mechanical properties
- G01M11/081—Testing mechanical properties by using a contact-less detection method, i.e. with a camera
-
- 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
Definitions
- the invention relates to an automated inspection method for bogies for rail vehicles, in which manufacturing properties of a bogie are checked to ensure they conform to the production plan and/or design properties of the bogie to ensure that the design conforms to the construction plan.
- Bogies for rail vehicles are safety-relevant products and go through a complex development and production process with strict quality specifications. For example, after a manufacturing or assembly step or during maintenance or Maintenance operations require inspections, which are often carried out by a manufacturing or maintenance staff.
- JP 2002-87256 A for example, is known from the prior art, in which a camera-based measuring and adjustment system for a rail vehicle is shown. Cameras spaced laterally from a rail vehicle record primary and secondary springs, the lengths of which are determined using an image processing method. Any need for adjustment of the primary and secondary springs is determined on the basis of the lengths and wheel loads and instructed as maintenance instructions.
- the mentioned approach has the disadvantage that determination and evaluation steps are focused on spring devices or that no general applicability of the measuring and adjustment system to manufacturing or design properties of a chassis is evident.
- the invention is based on the object of specifying a flexibly adaptable inspection method with which various manufacturing or design properties of a chassis can be reliably checked.
- this object is achieved with an inspection method according to claim 1, in which at least a first test section is defined for the undercarriage, which comprises manufacturing details to be checked and/or design details of the undercarriage or components of the undercarriage to be checked that the at least first test section at least a position of at least one first camera and/or at least one angular position of the at least first camera is assigned, that an expected first target camera image content is assigned to the at least first test section, that a first actual camera image content recorded by means of the at least first camera with regard to the at least the first test section is compared with the first target camera image content, and that a warning event is generated if at least one deviation of the first actual camera image content from the first target camera image content is evaluated as an error using a machine learning method, the method machine learning is trained at least on the basis of the first test section in at least one predefined, plan-compliant first configuration and in at least one predefined, faulty second configuration.
- the automated inspection method according to the invention can be used, for example, in chassis production (manufacturing, assembly, intermediate and final inspections, etc.). However, it is also conceivable to use it to improve servicing and maintenance processes (in order, for example, to reliably detect deviations from planned production and/or design properties of the chassis that have arisen during operation of the chassis, e.g. damage such as cracks, etc.). Staff can be supported or relieved in this way. Inspection procedures are specified. It is also possible, for example, to use the inspection method according to the invention for employee training in order to raise awareness with regard to typical errors in chassis production and/or chassis servicing or maintenance.
- the first target camera image content is formed on the basis of information from a parts list, a drawing or a model. This measure allows the inspection method to be linked to manufacturing and/or design data.
- the first target camera image content can include, for example, a target number of fasteners at target positions in the first test section of the chassis (for example on an axle box).
- the drawing can be z.
- B. be a production or construction drawing (e.g. with surface quality specifications) .
- the model can be a three-dimensional model from a computer-aided design (CAD) software product.
- CAD computer-aided design
- the first target camera image content can correspond to a camera image or a complete camera image (with all image information).
- the first target camera image content can also only include text and/or numerical information (e.g. position information on fastening means and detailed geometric or graphic information on these fastening means, etc.).
- the mentioned coupling means that the essential inspection content can be checked efficiently. An assessment as to whether an actual camera image corresponds to a target camera image with regard to the essential inspection contents is carried out using the machine learning method.
- An advantageous embodiment is obtained when a plan-compliant state of the at least first test section is signaled when all manufacturing details to be checked and/or construction details of the chassis in at least the first test section or all components of the chassis to be checked in at least the first test section as be evaluated in accordance with the plan.
- a manufacturing detail and/or design detail of the chassis to be checked in the at least first test section or a component of the chassis to be checked in the at least first test section is marked with a first indicator if it is assessed as conforming to plan, marked with a second indicator if assessed as defective, or marked with a third indicator if assessed as indeterminate and requiring review, the first indicator, the second indicator and the third indicator are designed to be distinguishable from one another. This reduces risks with regard to misinterpretation of evaluation results. Plan-compliant, faulty and indeterminable states of production details and/or design details of the chassis can be clearly distinguished from one another.
- first indicator the second indicator and the third indicator have different colors.
- warning event includes instructions on how to rectify the error. This measure enables a quick and targeted reaction to a warning event.
- the instruction can, for example, a text message (eg supplemented by a graphic representation) on a
- the first camera or its holder can be arranged immovably or at least does not have to be displaceable in all spatial directions or pivotable about all spatial axes.
- a possible, promising field of application for the inspection process is opened up when the components of the chassis to be checked are locking means and/or fastening means.
- the closure means can, for example, be a cover (e.g. of an axlebox bearing housing of the running gear).
- the fastening means can, for example, be screws (e.g. for screwing a cover to the wheelset bearing housing).
- Another promising field of application for the inspection process is opened up when manufacturing details and/or construction details of the chassis to be checked Inscriptions and/or at least one pictogram are inspected.
- At least one inspection means carrier and at least one evaluation unit In connection with an inspection device for undercarriages for rail vehicles, set up for carrying out an inspection method according to the invention, with a track, at least one inspection means carrier and at least one evaluation unit, particularly comprehensive and meaningful evaluation results are achieved if with the at least one inspection means carrier and with the at least one evaluation unit, which is designed as a camera image evaluation unit, at least one first camera is connected as the first inspection means, the at least one inspection means carrier being designed in the form of a portal, encompassing the track.
- a preferred solution is obtained if the first camera, which can be directed towards a first side flank of a running gear that can be arranged on the track, is connected to a first side part of the at least one inspection means carrier, a second camera as a second inspection means can be directed towards a second side flank of an undercarriage that can be arranged on the track is connected to a second side part, arranged opposite the first side part, of the at least one inspection means carrier, a third camera as a third inspection means that can be aimed at an upper side of a chassis that can be arranged on the track is connected to an upper part of the at least one inspection means carrier, and a fourth camera as the fourth inspection means is connected to a lower part of the at least one inspection means carrier so that it can be directed towards an underside of a running gear that can be arranged on the track. It is favorable if a conveying device is arranged for moving an undercarriage that can be arranged on the track.
- the chassis can be moved relative to the inspection means carrier during an inspection or between individual inspection steps.
- a conveyor device for example, a towing device with a drive, with which the chassis can be coupled, etc. be provided .
- the at least one inspection means carrier is movably mounted relative to the track.
- Fig. 1 A flowchart of an exemplary embodiment variant of an inspection method according to the invention
- Fig. 2 A side view of an exemplary first embodiment variant of an inspection device according to the invention, which shows a side view,
- FIG. 3 A side view of an exemplary second embodiment variant of an inspection device according to the invention, which shows an inspection means carrier in a front view,
- Fig. 4 A display of an evaluation unit of an inspection device according to the invention with an exemplary first evaluation result based on an inspection method according to the invention
- FIG. 5 A display of an evaluation unit of an inspection device according to the invention with an exemplary second evaluation result based on an inspection method according to the invention.
- Fig. 1 shows a flowchart for an exemplary embodiment variant of an automated inspection method for rail vehicles according to the invention, in which manufacturing properties of a chassis 1, as shown by way of example in Fig. 2, are checked for production plan-compliant and design properties of the chassis 1 for construction plan-compliant execution. It is checked, for example, whether fasteners (e.g. screws) are correctly tightened at their assembly positions, whether closure means (e.g. a cover 2 shown for example in Fig. 2) are present and correctly arranged, whether a pictogram 3, as shown by way of example in Fig. 4 and Fig. 5, or labels are attached in accordance with the plan, or whether surfaces are free of damage, etc.
- fasteners e.g. screws
- closure means e.g. a cover 2 shown for example in Fig. 2
- pictogram 3 as shown by way of example in Fig
- a first test section 4 and a second test section 5 are defined for the chassis 1 (test section definition 6), which include manufacturing details and design details of the chassis 1 to be tested and components of the chassis 1 to be tested.
- the first test section 4 and the second test section 5 are locally offset from each other.
- the first test section 4 virtually encloses an axle box 7 of the running gear 1, the second test section 5 an oscillating arm 8 of an axle guide device of the running gear 1.
- the first test section 4 and the second test section 5 are assigned positions and angular positions of cameras, as shown by way of example in FIG. 3 (position and position definition 9).
- the positions are set or reached during a measurement process by moving the chassis 1 on a track 10, as shown by way of example in FIG , and at a second position, which coincides with the second test section 5 is correlated, stopped and locked.
- the first test section 4 is given an expected first desired camera image content 11, as is shown in FIG. 5 is shown, assigned to the second test section 5, a second target camera image content (target content definition 12).
- the first target camera image content 11 and the second target camera image content are formed on the basis of information from a parts list, a drawing or a model. From this it is derived, for example, at which positions of the chassis 1 screws of which type must be arranged.
- the parts list, drawing or model is in electronic form in an example shown in FIG. 2 implemented evaluation unit 13 shown.
- test section definition 6 the position and location definition 9 and the target content definition 12 are completed, the angular positions of the cameras are set and then the chassis 1 is moved into the first position (first adjustment 14).
- a first measurement 16 is then carried out, in which the first test section 4 on the chassis 1 is photographed using the cameras.
- the chassis 1 is then moved further into the second position (second adjustment 15 ).
- a second measurement 17 is carried out in the second position, in which the cameras are used to photograph the second test section 5 on the chassis 1 .
- the chassis 1 is thus moved in several steps and then stopped again.
- the cameras it is also conceivable for the cameras to be moved during the inspection in addition to setting the angular positions.
- a movable inspection means carrier 18 can be provided for the cameras, as is shown in FIG. 2 is shown.
- Image data are transmitted to the evaluation unit 13 .
- the evaluation unit 13 compares a first actual camera image content 19 recorded by the cameras with regard to the at least first test section 4 with the first target camera image content 11, and a recorded second actual camera image content 20 with regard to the second test section 5 with the second target -Camera image content (comparison 21).
- an evaluation 22 is used to check whether these deviations are require warning event .
- the evaluation 22 is carried out using a machine learning method, which is trained using predefined, plan-compliant first configurations of the first test section 4 and the second test section 5 and using predefined, faulty second configurations of the first test section 4 and the second test section 5 .
- a program for image processing is implemented in the evaluation unit 13 .
- a recognition of a missing screw in the first test section 4 is trained, for example, by evaluating the brightness, contrast and/or color of screw heads and boreholes in a plan view.
- An area with a particularly low level of brightness or with a special course of brightness from a bright first area to a dark second area is interpreted, for example, as an open drill hole, as a result of which a missing screw is detected.
- Outline gradients are recognized on the basis of gradients of differences in brightness, contrast and/or color.
- a circular outline indicates an open one Close the drill hole while interpreting a polygonal outline as a screw head.
- the detection of missing screws is not limited to a specific position on the chassis 1 . Rather, the machine learning method learns general patterns or Regularities of places with missing screws.
- a statistical model based on training data is formed in the evaluation unit 13 . Probability values are assigned to characteristic values for brightness, contrast and/or color as well as for brightness, contrast and/or color differences. A low brightness value on a surface together with a jump in brightness in a circular section, for example, correlates with a high probability that a screw is missing.
- the machine learning method described is of course not only used for screws, but also, for example, for checking locks, the presence of labels and for detecting structural damage (e.g. a crack 23 shown as an example in Fig. 2) of the chassis 1 Etc . applied .
- the first actual camera image content 19 and the second actual camera image content 20 are evaluated with regard to their values for brightness, contrast and/or color and for brightness, contrast and/or color differences.
- Corresponding probabilities for a lack of fasteners, the pictogram 3, inscriptions or the presence of damage, etc. are determined on the basis of the statistical model in the evaluation unit 13 .
- the machine learning method and the statistical model are continuously improved by continuously adapting the second configurations using actual camera image contents that have been recorded and assessed as faulty. Training data are thus also formed continuously when the inspection method is used, which after their formation flow directly into the evaluation of 22 new inspection scenarios.
- Plan-compliant states of the first test section 4 and the second test section 5 are signaled when all manufacturing details to be checked and/or design details of the chassis 1 in the first test section 4 and in the second test section 5 or all components of the chassis 1 to be checked be assessed as plan-compliant in the first test section 4 and in the second test section 5 .
- the warning event is formed (warning event formation 24) if deviations of the first actual camera image content 19 from the first target camera image content 11 and/or the second actual camera image content 20 from the second target camera image content using the machine learning method as an error be evaluated (if, for example, in the first test section 4 instead of four screws are detected with a probability of more than 75%, etc . ) .
- first actual camera image content 19 and in the second actual camera image content 20 manufacturing details to be checked and design details to be checked of the chassis 1 in the first test section 4 and in the second test section 5 or a component of the chassis 1 to be checked are shown in the first test section 4 or .
- in the second test section 5 marked with a first indicator 25 if it is judged as conforming to plan, marked with a second indicator 26 if judged as faulty or marked with a third indicator 27 if judged as indeterminable and requiring re-examination , wherein the first indicator 25, the second indicator 26 and the third indicator 27 shown in FIG. 4 are shown are designed to be distinguishable from one another.
- the first indicator 25, the second indicator 26 and the third indicator 27, which together with the first I st Camera image content 19 and the second actual camera image content 20 on a display 28 of the evaluation unit 13, as shown by way of example in FIG. 4 are shown, different colors on .
- this includes the second indicator 26 or the third indicator 27 as well as an instruction to correct the error.
- a text field appears on the display 28 which instructs that a screw of a certain type is to be added at a certain position. In this case, reference is made to a specific position number of the electronic parts list stored in the evaluation unit 13 .
- Fig. 2 is a side elevation of an exemplary first embodiment variant of an inspection device according to the invention as a side view.
- the inspection device is designed to carry out an inspection method, as is exemplified in connection with FIG. 1 is described . It comprises a track 10 , an inspection means carrier 18 , an evaluation unit 13 embodied as a camera image evaluation unit and a conveyor device 29 for moving an undercarriage 1 of a rail vehicle arranged on the track 10 .
- non-visible cameras connected, as for example in Fig. 3 are shown. These cameras are connected to a cable 30 via which they are connected to the evaluation unit 13 . The cameras are supplied with electricity via the cable 30 and a signal line is established between the cameras and the evaluation unit 13 .
- the evaluation unit 13 is designed as an industrial computer with a powerful processor suitable for image processing.
- the evaluation unit 13 is arranged in the immediate vicinity of the inspection means carrier 18 and it takes place decentralized data processing at the edge of an industrial computer network (edge computing). According to the invention, however, it is also conceivable to arrange the evaluation unit 13 far away from the inspection means carrier 18, to provide a radio link between the cameras and the evaluation unit 13 and/or to store computing processes in a computer cloud (cloud computing), etc.
- the inspection means carrier 18 is portal-shaped, the track 10 encompassing fend formed. It has a set of rollers on each side of the track 10 , as a result of which the inspection means carrier 18 is movably mounted relative to the track 10 .
- the roller set arranged on the 2 visible side has a first roller 31 and a second roller 32 .
- the chassis 1 is coupled to the conveying device 29 via a traction cable 33 .
- the conveying device 29 has an electric conveying drive 34 , via which the traction cable 33 is wound up and the running gear 1 is pulled in the process.
- the relative positions between the chassis 1 and the inspection means carrier 18 are adjusted by means of the conveyor device 29 and/or the movable inspection means carrier 18, as a result of which the cameras for inspecting the chassis 1 are aimed precisely at a first inspection section 4, which comprises an axle box 7 with a cover 2 of the chassis 1 bounds, and a second test section 5, which bounds a swing arm 8 of a wheelset guide device of the running gear 1, can be aligned on the running gear 1.
- a first actual camera image content 19 is recorded via the first test section 4
- a second actual camera image content 20 is recorded via the second test section 5 .
- the first test section 4 is checked for the presence of a first screw 35, a second screw 36 and, in FIG. 2 non-visible additional screws checked.
- a crack 23 is detected and evaluated by means of the inspection method.
- Fig. 3 discloses a side view of an exemplary second embodiment variant of an inspection device according to the invention, which shows an inspection means carrier 18 in a front view.
- the inspection means carrier 18 is portal-shaped, designed to encompass a track 10 of the inspection device.
- a chassis 1 can be arranged on the track 10 for inspection purposes, as is shown by way of example in FIG. 2 is shown.
- a first camera 39 , a second camera 40 , a third camera 41 , a fourth camera 42 , a fifth camera 43 and a sixth camera 44 are connected to the inspection means carrier 18 in a ball-jointed and thus pivotable manner.
- the angular positions of the first camera 39 and the additional cameras can therefore be adjusted.
- the first camera 39 which can be directed as the first inspection means to a first side flank of the chassis 1, is connected to a first side part 45 of the inspection means carrier 18, the second camera 40, which can be directed as the second inspection means to a second side flank of the chassis 1, is connected to the first side part 45 oppositely arranged second side part 46 of the inspection means carrier 18, the third camera 41, which can be directed as a third inspection means towards an upper side of the chassis 1, with an upper part 47 of the inspection means carrier 18 and the fourth camera 42, which can be directed as a fourth inspection means towards an underside of the chassis 1, with a lower part 48 of the inspection means carrier 18 .
- the fifth camera 43 pivoted downwards, is connected to the first side part 45 , the sixth camera 44 , also pivoted downwards, to the second side part 46 .
- the first camera 39 and the other cameras are designed as robust industrial digital cameras and have lighting units in order to illuminate the corresponding inspection areas of the running gear 1 (e.g. the first side flank) and to achieve a consistently high image quality.
- FIG. 4 shows a display 28 of an evaluation unit 13 of an inspection device according to the invention with an exemplary evaluation result based on an inspection method according to the invention.
- the display 28 shows a first actual camera image content 19 of a first test section 4 of a chassis 1, as is shown, for example, in FIG. 2 is shown.
- a wheel set bearing housing 7 can be seen, in which a cover 2 is fastened by means of a first screw 35 , a second screw 36 and a third screw 37 .
- a cover 2 is fastened by means of a first screw 35 , a second screw 36 and a third screw 37 .
- the first screw 35 and the other screws, a pictogram 3 and a lettering 49 are checked for correct execution.
- the first screw 35 has been executed correctly, its first state, which conforms to the plan, is indicated by means of a first indicator 25 .
- the first indicator 25 is designed as a green tick symbol.
- a second indicator 26 is arranged in the area of an opening 50 and marks a faulty second state as a warning event.
- the second indicator 26 is designed as a red X symbol.
- the second screw 36 is located in its correct position, but rotated. It is evaluated as being indeterminable and requiring a review, marked with a third indicator 27 which is in the form of a yellow question mark symbol and also symbolizes a warning event. The verification shows that the second screw 36 needs to be retightened.
- the third screw 37 , the pictogram 3 and the lettering 49 are executed correctly and are therefore marked with further indicators designed as green tick symbols.
- Fig. 5 shows a display 28 of an evaluation unit 13 of an inspection device according to the invention with an exemplary evaluation result based on an inspection method according to the invention.
- the display 28 shows a first actual camera image content 19 of a first test section 4 of a chassis 1, as is shown, for example, in FIG. 2 is shown.
- This first actual camera image content 19 corresponds to a first target camera image content 11 with which the first actual camera image content 19 as in connection with FIG. 1 described during the inspection process.
- a wheel set bearing housing 7 can be seen, in which a cover 2 is fastened by means of a first screw 35 , a second screw 36 , a third screw 37 and a fourth screw 38 .
- the first screw 35 , the second screw 36 , the third screw 37 and the fourth screw 38 as well as the pictogram 3 and the lettering 49 are correct.
- a first indicator 25 as well as further indicators, which indicate correct execution of the first screw 35, the further screws, the pictogram 3 and the lettering 49, are designed as green tick symbols. Since all manufacturing details and construction details or all components of the chassis 1 in the first test section 4 are rated as plan-compliant, a plan-compliant state of the first test section 4 is signaled. A warning event is therefore not formed.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA51044/2021A AT525771A1 (de) | 2021-12-23 | 2021-12-23 | Inspektionsverfahren und Inspektionseinrichtung für Fahrwerke für Schienenfahrzeuge |
| PCT/EP2022/086407 WO2023117775A1 (de) | 2021-12-23 | 2022-12-16 | Inspektionsverfahren und inspektionseinrichtung für fahrwerke für schienenfahrzeuge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4419882A1 true EP4419882A1 (de) | 2024-08-28 |
Family
ID=84888842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22839739.4A Pending EP4419882A1 (de) | 2021-12-23 | 2022-12-16 | Inspektionsverfahren und inspektionseinrichtung für fahrwerke für schienenfahrzeuge |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4419882A1 (de) |
| AT (1) | AT525771A1 (de) |
| WO (1) | WO2023117775A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4498288A1 (de) | 2023-07-27 | 2025-01-29 | Siemens Aktiengesellschaft | Detektion von technischen zuständen oder technischen beschaffenheiten |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002087256A (ja) | 2000-09-20 | 2002-03-27 | Hitachi Engineering & Services Co Ltd | 車両ばね調整支援方法及び点検監視装置 |
| CA2848272C (en) * | 2008-10-22 | 2017-11-14 | International Electronic Machines Corp. | Thermal imaging-based vehicle analysis |
| WO2019092248A1 (de) * | 2017-11-10 | 2019-05-16 | Db Fernverkehr Ag | Analyseverfahren und analysesystem für mit einem inspektionssystem zur optischen inspektion eines fahrzeugs aufgenommene rohdaten |
| CN110733539B (zh) * | 2019-10-14 | 2024-02-27 | 中铁第四勘察设计院集团有限公司 | 一种城市轨道交通车辆基地智能化列检系统及方法 |
| JP6689479B1 (ja) * | 2019-10-23 | 2020-04-28 | 三菱電機株式会社 | 診断システムおよび診断方法 |
-
2021
- 2021-12-23 AT ATA51044/2021A patent/AT525771A1/de unknown
-
2022
- 2022-12-16 EP EP22839739.4A patent/EP4419882A1/de active Pending
- 2022-12-16 WO PCT/EP2022/086407 patent/WO2023117775A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023117775A1 (de) | 2023-06-29 |
| AT525771A1 (de) | 2023-07-15 |
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