DE102008049224A1 - Method for monitoring drive mechanism of rail vehicle movable on rail track to identify defect at e.g. rotary stand of chassis, involves detecting component running in certain direction of acceleration of pivot mounting as sensor variable - Google Patents

Method for monitoring drive mechanism of rail vehicle movable on rail track to identify defect at e.g. rotary stand of chassis, involves detecting component running in certain direction of acceleration of pivot mounting as sensor variable Download PDF

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Publication number
DE102008049224A1
DE102008049224A1 DE102008049224A DE102008049224A DE102008049224A1 DE 102008049224 A1 DE102008049224 A1 DE 102008049224A1 DE 102008049224 A DE102008049224 A DE 102008049224A DE 102008049224 A DE102008049224 A DE 102008049224A DE 102008049224 A1 DE102008049224 A1 DE 102008049224A1
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Prior art keywords
sensor
size
acceleration
drive
procedure
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DE102008049224A
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German (de)
Inventor
Günther Hornung
Paul Kofler
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Thales Management and Services Deutschland GmbH
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Thales Management and Services Deutschland GmbH
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Priority to DE102008049224A priority Critical patent/DE102008049224A1/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M17/00Testing of vehicles
    • G01M17/08Railway vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61LGUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L23/00Control, warning, or like safety means along the route or between vehicles or vehicle trains

Abstract

The method involves detecting a sensor variable that characterizes oscillations of a pivot mounting (15) of a drive mechanism (13) by a sensor device (27). The drive mechanism is monitored depending on the detected sensor variable to determine whether a defect is present in the drive mechanism. A component running in a certain direction of acceleration of the pivot mounting is detected as sensor variable by a sensor element of the sensor device. Vertical acceleration of the pivot mounting is detected as a component of acceleration. An independent claim is also included for a testing device comprising a sensor device.

Description

  • The The invention relates to a method for checking at least one drive of a rail vehicle on a track to a defect, the process comprising the steps of: Detecting at least one sensor size, the Characterized vibrations of at least part of the drive, by means of a sensor device and checking depending on the sensor size, whether the defect is present.
  • One Such method is usually used during the Ride the rail vehicle used to a relatively short term occurred defect, for example, due to wear on Rail vehicle or on the drive or by an occurred Damage to the rail vehicle or the drive was caused, quickly to be able to recognize, so possibly from the defect Outbound accident risks avoided as much as possible can be.
  • The DE 198 37 476 A1 shows a method for preventively monitoring the behavior of rail vehicles. In this method, noises and vibrations are recorded by means of vehicle-mounted sensors. In the case of mechanical stress and wear with time, changing properties of components of the vehicle are detected in this method by comparison of sound and vibration values recorded by the sensors with reference values. The reference values are not recorded on the system to be monitored and not in real time. A disadvantage of this method is that the vibrations can be detected only relatively inaccurate, so that a sufficiently reliable detection of a defect can possibly be achieved by providing extensive, specific for each traveled route reference data. For this reason, the implementation of this method is relatively expensive.
  • task The present invention is a method for checking indicate a defect in a drive of a rail vehicle, this does not depend on route-specific reference data is and still reliably detects the defect. Such Procedure is considered relatively reliable if in checking if the defect is present in comparatively rare cases an existing defect is not detected or incorrectly detected a defect is, although no defect is present.
  • The Task is solved by a method of the type mentioned, characterized in that as the sensor size by means of at least one sensor element of the sensor device a moving in a certain direction component of an acceleration of the part is detected. A defect can be due to wear on Drive, material fatigue, damage to the drive or through Manufacturing error in the production of parts of the drive caused become. Such a defect can, for example, on a bogie of the chassis or on a shaft, axle or a wheel tire of a Wheel set of the drive occur. If a defect is detected, then the rail vehicle can be taken out of service and an accident, especially a derailment, due to a break the axle or the shaft or the wheel tire avoided become. By checking for a defect, Thus, an accident risk is detected early on and on This way, human and environmental hazards significantly reduced.
  • Thereby, that not only the time course of a sensor size, that is the vibrations, but also a direction the vibration is detected, the defect can without this resort to route-specific reference data must be recognized. The vibrations are thus direction differentiated evaluated. The inventive method can thus be realized relatively easily, because before the use of the Procedure no measuring the to be traveled by the rail vehicle Route is required for collecting reference data.
  • It it is preferred that by means of the sensor element of the sensor device the component of acceleration going in the specific direction a bogie of the landing gear is detected.
  • It is further preferred that as a component of the acceleration transverse to a longitudinal direction of the track and at least in Essentially horizontally extending shear acceleration of the part detected becomes. The shear acceleration is at least substantially parallel directed to axles or shafts of a wheel of the drive. Out The shear acceleration may be a shearing force acting on the part of the Fahrwerks works, be calculated. It was recognized that the Shear force if it is too high due to the defect lead to derailment of the rail vehicle can and thus for checking on the defect detected should be.
  • Around Unevenness of a tread of the drive on one Defect may indicate as reliable as possible To be able to recognize, it is preferred that as a component the acceleration detected a vertical acceleration of the part becomes. From the vertical acceleration, one acting on the part vertical force can be calculated.
  • Complementing the directional differentiation the detection of the acceleration can be provided that detected as the sensor size of the part of the drive generated structure-borne noise within the part and / or generated by the part airborne sound in the environment. For this purpose, a structure-borne sound sensor for detecting the structure-borne noise may be attached to a surface of the part, or a microphone for detecting the airborne sound may be arranged in the surroundings of the part. By detecting the sound, additional sensor sizes are provided which further facilitate checking the drive for a defect. It can be provided that the structure-borne noise and / or the airborne sound is detected only for a part of the drives of the rail vehicle.
  • It It is conceivable that for a first part of the drives only the acceleration is detected while for a other part of the drives only the structure-borne sound and / or the airborne sound are detected. In this way, manufacturing costs individual sensor devices for detecting these sensor sizes be reduced because a single sensor device either the Sensor elements for detecting the acceleration or the structure-borne noise sensor or the microphone must have. So it does not need it both types of sensors are provided in a sensor device.
  • In a preferred embodiment of the present invention it is provided that the at least one sensor size recorded for various drives of the rail vehicle which is the sensor size generated for a particular drive characterizes the vibrations of the part of this particular drive. So it will be for different drives, preferably for each drive of the rail vehicle, one each for This drive captures specific sensor size. As a result, the vibrations are detected even more differentiated, so that the process can be realized even more reliable can.
  • If in the individual drives no defect is present, then will in the part of each drive, if there is a specific section the track happens to be essentially the same sensor size detected. As the individual drives of the rail vehicle along a longitudinal direction of the track arranged one behind the other are the individual drives pass the stretch of track during driving one after another, leaving a time lag between the sensor sizes occurs, the checking on the defect complicated. Thus it is suggested that for a time course of at least part of the sensor sizes an originating from a distance of the individual drives among themselves temporal offset between the temporal courses of these Sensor sizes is determined.
  • Based the determined time offset can be the order of the individual Drives within the rail vehicle automatically from the process be determined. When assembling the rail vehicle For example, from individual cars or railcars are therefore not special configuration works, for example at the sensor devices necessary to inform the procedure about to provide the order of the drives. This will be the Application of the procedure simplified.
  • It can be provided that to check whether the defect is present, a speed of travel, which characterizes a travel speed of the rail vehicle, is determined. Using the travel speed can When checking whether the defect is present, taken into account For example, certain features may be over time the sensor size or the spectrum of the sensor size depend on the speed of travel.
  • Even though the cruise speed size also by queries determined by control or regulating devices of the rail vehicle It is preferable that the speed of the cruise depending on the time lag between the Sensor signals is determined. This can be the Procedures independent of the control or regulating devices realize the rail vehicle. Is a distance along the longitudinal direction the track between the individual drives known, then can as travel speed the actual Travel speed of the rail vehicle to be calculated.
  • It it is particularly preferred that for checking whether the defect is present, the sensor sizes of different Drives are compared with each other. Here you can the sensor sizes compared directly be and / or can by means of signal processing Characteristic variables are calculated that have certain characteristics for example over time or in the range of sensor sizes characterize, and these characteristics of the sensor sizes the different drives are compared. Based this comparison can then be checked whether the defect is present.
  • If it is detected that a defect exists, a severity of the defect can be determined by evaluating individual sensor signals or by comparing. Depending on this severity, an alarm level can be set. At a high severity level, an operator of the rail vehicle may be notified of an alarm, that is to say a high alarm level message, so that he can immediately start the rail vehicle holds. If only a low degree of severity is detected, the driver can only be warned, that is to say a message of a low alarm level, so that, for example, after the end of operation, a special inspection of the rail vehicle or of the drive can be carried out.
  • About that In addition, it can be provided that the detected sensor size with a sample size or characteristics it is compared. The pattern size can be from Characteristics of the track and / or characteristics of the rail vehicle, especially the drive, be independent. The pattern size thus does not have to be specific to the application of the procedure in connection with a specific type of rail vehicle or a certain route to be traveled.
  • When Signal processing method for checking whether the defect is present or for comparing the sensor signals with each other or at least one sensor signal with the pattern signal, for example a cross-correlation of the sensor signals with each other or the sensor signals are made with the pattern signal. Furthermore can change the sensor size with appropriate procedures be disturbed, there may be disturbances in the Sensor size can be eliminated, it can Method for pattern recognition over time or in the spectrum sensor size or pattern size be, and there may be different methods of analysis of the spectrum of the sensor size.
  • Around in comparing the sensor sizes with each other not having to take the time offset into account it is preferred that before comparing the sensor sizes Together, the time course of at least a portion of the sensor sizes is corrected such that correspondingly corrected sensor sizes no longer have the time offset. From the sensor sizes So first corrected sensor sizes calculated, and the corrected sensor sizes are compared to each other. Correcting the sensor sizes can be a time delay of the time course of individual or include all sensor sizes.
  • In a preferred embodiment of the invention is provided that from the sensor size, preferably from the corrected sensor sizes, a first part size which is characterized by oscillations of the nature of the drive. In this way may be due to the nature of the track Influence on the sensor size can be eliminated.
  • in this connection it is preferred that from the first part size, preferably by subtracting the first part size the sensor size or the corrected sensor size, a second partial size is calculated, that of the nature of the track and / or a substructure of the track characterized originating vibrations. This will checking the quality of the track or the substructure during the journey of the rail vehicle on the basis of the second part size. It can be done using the second part size also a safety-critical defect on the track can be detected.
  • It is preferred while driving the quality to monitor the traveled route. This is in one preferred embodiment of the invention provided that determined a quality profile of the track or the substructure is determined by a current position of the rail vehicle and the second part size together with the position is stored. The current position of the rail vehicle can for example by means of a GPS receiver or another Position determining device can be determined. Instead of a Geographic position can also be a position within the route for example, with the help of a rail vehicle anyway available Odometer be determined.
  • When Another solution to the problem is a testing device to check at least one drive rail vehicle on a rail track proposed for a defect, wherein the test device at least one sensor device for Detecting at least one sensor size, the Characterized vibrations of at least part of the drive, and evaluation means for checking in dependence from the sensor size, whether the defect is present, which is characterized in that the sensor device at least a sensor element for detecting one in a certain direction extending component of an acceleration of the part. With the help of such a test device, the drive particularly reliable for the defect checked where road-specific or vehicle-specific reference data do not need to be used.
  • Especially, if the tester to run the above set up inventive method described is, all the advantages of the invention Procedure can be realized in a simple manner.
  • The Tester works reliably when it the part of the drive is a bogie. moreover in this case, it suffices to have only one sensor device per drive provided.
  • It It is particularly preferred that the sensor device is a first sensor element for detecting a transverse to the longitudinal direction of the track and at least substantially horizontally extending shear acceleration of the part and / or a second sensor element for detecting a Vertical acceleration of the part. The sensor device can a 2D acceleration sensor or a 3D acceleration sensor in which the first sensor element or the second sensor element integrated is. As a result, a compact construction of the sensor device is achieved.
  • The individual operations of the method according to the invention can be used in different parts of the testing device be executed. This can also be a distribution of be provided for individual operations of the procedure. However, it is preferable the evaluation means comprise a central evaluation device and the test apparatus is a communication network, preferably a wireless ad hoc network for transmitting the sensor size from the sensor device to the evaluation device. It Thus, at least most of the steps of the procedure in the performed central evaluation. The sensor devices can hereby computing means for preprocessing the detected Have sensor size. The communication network or the ad hoc wireless network allows the test device largely independent of the rail vehicle can be operated. Since checking whether the defect is present, at least largely independent of special properties of the rail vehicle is feasible, are by using the also independent of the rail vehicle Ad hoc network ideally no adjustments to the test device to a specific type of rail vehicle required.
  • alternative to the communication network of the test apparatus can also be provided be that the sensor unit via a communication network, such as a bus system of the rail vehicle, to the evaluation is connected.
  • Further Features and advantages of the invention will become apparent from the following Description in which exemplary embodiments will be explained in more detail with reference to the drawings. Showing:
  • 1 a rail vehicle with a testing device according to a preferred embodiment of the present invention;
  • 2 a schematic representation of the test device 1 ; and
  • 3 a signal flow diagram of a method performed by the tester.
  • 1 shows a rail vehicle 11 , which is designed as a railcar and three drives 13 having. Every drive 13 includes a bogie 15 each with two wheelsets 17 , The rail vehicle 11 is on a track 19 and is in a longitudinal direction (arrow 21 ) of the track 19 mobile.
  • The rail vehicle 11 has a testing device 23 to check the drives 13 on a defect. The tester 23 includes a central evaluation device 25 and sensor devices 27 , which by means of a communication device to the evaluation device 25 are connected. At every bogie 15 each is a sensor device 27 fixed, so that the sensor device 27 while driving the rail vehicle 11 occurring vibrations within the bogie 15 can capture.
  • The construction of the test device 23 is in 2 shown in more detail. The sensor device 27 has an acceleration sensor 29 with a first sensor element 31 for detecting a transverse to the longitudinal direction 21 extending shear acceleration a s of the bogie 15 and a second sensor element 33 for detecting a vertical acceleration a of the bogie 15 on. The acceleration sensor 29 is thus for detecting two orthogonally aligned components of an acceleration of the bogie 15 namely, the shear acceleration and the vertical acceleration, set up; it is therefore a 2D acceleration sensor 29 ,
  • In another embodiment of the invention is as an acceleration sensor 29 a 3D acceleration sensor is provided. This acceleration sensor 29 has a third sensor element 35 which is for detecting a component a l of the acceleration of the bogie 15 which is orthogonal to the shear acceleration a s and to the vertical acceleration a v . That of the third sensor element 35 thus detected component a l of the acceleration is at least substantially parallel to the longitudinal direction 21 of the track 19 longitudinal acceleration a l .
  • Furthermore, the sensor device 27 one with the bogie 15 firmly connected structure-borne sound sensor 37 for detecting a while driving the rail vehicle 11 in the bogie 15 existing structure-borne sound x k on. In addition, the sensor device comprises 27 a microphone 39 for detecting one from the bogie 15 while driving the rail vehicle 11 emitted airborne sound x l .
  • In addition, the sensor device 27 a first computer 41 on, for example, as a Microcomputer, in particular as a microcontroller, may be formed. Outputs of the acceleration sensor 29 , the structure-borne sound sensor 37 as well as the microphone 39 are with corresponding inputs of the first computer 41 connected. At the first computer 41 is also a first communication device 43 connected for wireless communication via a radio channel.
  • In the embodiment shown, the rail vehicle 11 three drives 13 each with a bogie 15 on, being on each bogie 15 a sensor device 27 is arranged. For rail vehicles 11 with a different number of drives 13 or bogies 15 may be a correspondingly different number of sensor devices 27 be provided. It is also possible to only part of the bogies 15 the sensor device 27 to install.
  • In further embodiments of the present invention, the sensor device 27 only a part of in 2 shown sensors 29 . 37 . 39 on. For example, two types of sensor devices 27 be provided, wherein a sensor device 27 the first type the acceleration sensor 29 and not the sound sensors 37 . 39 whereas a sensor device 27 the second kind the sound sensors 37 . 39 but not the accelerometer 29 , having. Part of the bogies 15 then assigns the sensor device 27 the first kind on, while the remaining bogies 15 one sensor device each 27 of the second kind.
  • The evaluation device 25 has a second computer 45 on, to the second communication device 47 for wireless communication via radio is attached. Also, it's the second computer 45 a position detection device 48 in the form of a GPS receiver for determining a geographical position p of the rail vehicle 11 and a display device 49 connected. The second computer 45 can be similar to the first calculator 41 be designed as a microcomputer, in particular as a microcontroller. The three sensor devices 27 and the evaluation device 25 together form an ad hoc radio network 51 , The radio network 51 is itself organizing, whereby the transmission of messages over the radio network 51 is coordinated by means of an ad hoc routing protocol. This routing protocol can be any protocol that is particularly suitable for sensor networks in general.
  • During operation of the test device 23 generate the sensors 29 . 37 . 39 the sensor device 27 Sensor signals, each of which from the corresponding sensor element 31 . 33 . 35 of the acceleration sensor 29 , the structure-borne sound sensor 37 or the microphone 39 detected sensor size, namely the shear acceleration a s , the vertical acceleration a v , the acceleration in the longitudinal direction a l , the structure-borne noise x k and the airborne sound x l , characterize. The first computer 41 forms from the individual of the sensors 29 . 37 . 39 generated signals a sensor signal s and sends it via the first communication device 43 out, so it's over the wireless network 51 can be transferred. In order to keep a bit rate of the sensor signal s low, it can be provided that the first computer 41 a preprocessing of the individual sensors 29 . 37 . 39 generated by using suitable signal processing method extracts relevant components of these signals and forms the sensor signal s from these relevant signal components.
  • The evaluation device 25 receives the sensor signals s of the individual sensor devices 27 via the second communication device 47 and evaluates the transmitted by the sensor signals s sensor sizes a s , a v , a l , x k and x l . Here, the evaluation compares 25 same sensor sizes used by different sensor devices 27 be generated, both with each other and with predetermined pattern sizes. Based on this comparison, the second computer checks 45 whether on a drive 13 there is a defect and, if necessary, checks on which drive 13 the defect is present.
  • If there is a defect, the second calculator determines 45 based on the sensor sizes an alerting stage, which characterizes an extent of the defect, and generates a corresponding message via the display device 49 for example, a train driver of the rail vehicle 11 is shown.
  • The following is a procedure 53 to check if any of the drives 13 has a defect, based on the in the 3 illustrated signal flow diagram explained in more detail. All processing steps of the process 53 be from the second computer 45 , that means centrally executed. In other embodiments of the present invention, part of the processing steps of the method 53 also from the first computers 41 the individual sensor devices 27 executed.
  • The procedure 53 includes a first functional block 54 to which the individual sensor signals s 1 , s 2 and s 3 are supplied, which supply the individual sensor devices 27 and over the wireless network 51 to the evaluation device 25 were transferred. The individual sensor signals s 1 , s 2 and s 3 characterize those of the sensors 29 . 37 . 39 the respective sensor device 27 detected sensor sizes a s , a v , a l , x k and x l . Since the one individual sensor signals s 1 , s 2 and s 3 as a function of the interaction of a specific section of the track 19 with the drives 13 , in particular their wheelsets 17 , are generated and the individual drives 13 successively the particular section of the track 19 pass, exists between the sensor signals s 1 , s 2 and s 3 and the corresponding sensor sizes a s , a v , a l , x k , x l of the individual sensor devices 27 a time offset. The first functional block 54 determines this time offset between the sensor signals. One from the first functional block 54 generated first time offset signal .DELTA.t 12 characterizes the time offset between the sensor signal s 1 and the sensor signal s 2 and one of the first functional block 53 generated second time offset signal .DELTA.t 13 characterizes a time offset between the sensor signal s 1 and the sensor signal s 3rd
  • A second functional block 55 determined in dependence on the sensor signals s 1 , s 2 , s 3 and the time offset signals .DELTA.t 12 , .DELTA.t 13 a travel speed signal v, which is a travel speed of the rail vehicle 11 characterized. It can be provided that the second function block 55 for determining the travel speed signal v a distance d between the individual bogies 15 , in particular between adjacent bogies 15 , to calculate an absolute value of the travel speed.
  • In one embodiment, not shown, the vehicle speed signal is formed as a function of one of the sensor signals s 1 , s 2 , s 3 . Here, for example, a rotational frequency of the wheels of a wheelset 17 be calculated.
  • Based on the time offset signals .DELTA.t 12 , .DELTA.t 13 corrects a third function block 56 of the procedure 53 the sensor signals s 1 , s 2 , s 3 by delaying such that corresponding from the third function block 56 output corrected sensor signals u 1 , u 2 , u 3 no longer have the time offset. For this purpose, the third functional block uses the time offset signals Δt 12 , Δt 13 . The corrected sensor signals u 1 , u 2 , u 3 characterize correspondingly corrected sensor variables for the individual drives 13 ,
  • A fourth functional block 57 the corrected sensor signals u 1 , u 2 , u 3 , and the vehicle speed signal v are supplied. The fourth function block 57 calculated by comparing the corrected sensor signals u 1 , u 2 , u 3 with each other and taking into account the time offset signals Δt 12 , Δt 13 and the vehicle speed signal v for each drive 13 in each case a first partial signal y 1 , y 2 or y 3 , which characterizes a part of the size of the corresponding sensor sizes, the mechanical properties of the individual bogies 15 are attributed. The influence of the track 19 to the sensor sizes a s , a v , a l , x k and x l is thus eliminated from the individual sensor signals s 1 , s 2 , s 3 .
  • Subsequently, a fifth function block is calculated 59 from the first partial signals y 1 , y 2 and y 3 for each drive 13 each one characteristic vector c 1 , c 2 and c 3 , wherein each of these characteristics vectors c 1 , c 2 , c 3 has at least one characteristic value, which is a characteristic of the vibrations within the corresponding bogie 15 characterized. For determining the characteristic vectors c 1 , c 2 , c 3 , the fifth function block compares 59 the first partial signals y 1 , y 2 , y 3 with predetermined pattern signals M.
  • Further, the method has 53 a fifth functional block 61 which compares the characteristic values of the individual characteristic vectors c 1 , c 2 , c 3 with predetermined characteristic value ranges R and, depending on this comparison, for each bogie 15 an alarm signal A 1 , A 2 , A 3 generated, if the comparison shows that in one of the bogies 15 there is a defect. The alarm signals A 1 , A 2 , A 3 each include an alerting stage for indicating the severity of the defect. The second computer 45 controls the display device 49 in response to the alarm signals A 1 , A 2 , A 3 .
  • In particular in the function blocks 57 . 59 and 61 performed signal processing steps, can be between driven and non-driven bogies 15 be differentiated. As a result, differences in the vibration behavior between the driven and the non-driven bogies 15 be taken into account.
  • Further, the method 53 for creating a quality profile Q of the rail vehicle 11 equipped route. For this subtracts the process 53 by means of a subtractor 63 the first sub-signal y 1 from the sensor signal s 1 to obtain a second sub-signal z 1 of the sensor signal s 1 , which characterizes a subset of the sensor quantities a s , a v , a l , x k , x l , the characteristics of the track, especially the track 19 and a track substructure, stems. In a sixth function block 65 the further sub-signal z 1 is further processed, in particular by determining certain features of the further sub-signal z 1 , linked to the position p determined by the GPS receiver and as the quality profile Q of the route in storage means 67 be filed. Instead of the partial signal y 1 or the sensor signal s 1 or in addition to these signals, the other sensor signals s 2 , s 3 or partial signals y 2 , y 3 can be used to determine the quality profile Q.
  • In summary, when implementing the Invention a defect on one of the drives 13 In particular, due to the direction-differentiating or drive differentiating evaluation of the sensor sizes are detected particularly reliable, with at most minor adjustments to the type of rail vehicle are required.
  • QUOTES INCLUDE IN THE DESCRIPTION
  • This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
  • Cited patent literature
    • - DE 19837476 A1 [0003]

Claims (18)

  1. Procedure ( 53 ) to check at least one drive ( 13 ) one on a track ( 19 ) mobile rail vehicle ( 11 ) to a defect, the method ( 53 ) comprises the following steps: detecting at least one sensor variable (a s , a v , a l , x k , x l ), the vibrations of at least one part ( 15 ) of the drive ( 13 ), by means of a sensor device ( 27 ) and checking as a function of the sensor size (a s , a v , a l , x k and x l ), whether the defect is present, characterized in that as sensor size by means of at least one sensor element ( 31 . 33 . 35 ) of the sensor device ( 27 ) a component (a s , a v , a l ) running in a certain direction of an acceleration of the part ( 15 ) is detected.
  2. Procedure ( 53 ) according to claim 1, characterized in that as a component of the acceleration a transverse to a longitudinal direction ( 21 ) of the track ( 19 ) and at least substantially horizontally extending shear acceleration (a s ) of the part is detected.
  3. Procedure ( 53 ) according to claim 1 or 2, characterized in that as a component of the acceleration, a vertical acceleration (a v ) of the part is detected.
  4. Procedure ( 53 ) according to one of the preceding claims, characterized in that as the sensor size one of the part ( 15 ) of the drive ( 13 ) produced body sound (x k ) within the part ( 15 ) and / or the part ( 15 ) produced airborne sound (x l ) in the vicinity of the part ( 15 ) is detected.
  5. Procedure ( 53 ) according to one of the preceding claims, characterized in that the at least one sensor size (a s , a v , a l , x k , x l ) for different drives ( 13 ) of the rail vehicle ( 11 ), whereby for a particular drive ( 13 ) generated sensor size (A s , a v , a l , x k , x l ) the vibrations of the part ( 15 ) of this particular drive ( 13 Characterized.
  6. Procedure ( 53 ) according to claim 5, characterized in that for a time characteristic of at least a part of the sensor quantities (a s , a v , a l , x k , x l ; s 1 , s 2 , s 3 ) one of a distance (d) of each of the drives with one another herrührender temporal offset (at 12, .DELTA.t 13) between the time characteristics of these sensor sizes (a s, a v, a l, x k, x l; s 1, s 2, s 3) is determined.
  7. Procedure ( 53 ) according to one of the preceding claims, characterized in that, for checking whether the defect is present, a travel speed variable (v) representing a travel speed of the rail vehicle ( 11 ), is determined.
  8. Procedure ( 53 ) according to claim 7, characterized in that the travel speed variable (v) in dependence on the time offset (.DELTA.t 12 , .DELTA.t 13 ) between the sensor sizes (a s , a v , a l , x k , x l ; s 1 , s 2 , s 3 ) is determined.
  9. Procedure ( 53 ) according to one of claims 5 to 8, characterized in that for checking whether the defect is present, the sensor quantities (a s , a v , a l , x k , x l ; s 1 , s 2 , s 3 ) of different drives ( 13 ) are compared.
  10. Procedure ( 53 ) according to claim 9, characterized in that prior to comparing the sensor variables (a s , a v , a l , x k , x l ; s 1 , s 2 , s 3 ) with each other, the time profile of at least a portion of the sensor sizes (a s , a v , a l , x k , x l ; s 1 , s 2 , s 3 ) is corrected in such a way that correspondingly corrected sensor quantities (u 1 , u 2 , u 3 ) determine the time offset (Δt 12 , Δt 13 ) no longer have.
  11. Procedure ( 53 ) according to one of the preceding claims, characterized in that from the sensor size (a s , a v , a l , x k , x l ; s 1 , s 2 , s 3 ), preferably from the corrected sensor sizes (u 1 , u 2 , u 3 ), a first part-size (y 1 , y 2 , y 3 ) is calculated, which is characterized by oscillations that depend on the nature of the drive ( 13 ).
  12. A method according to claim 11, characterized in that from the first part size (y 1 , y 2 , y 3 ), preferably by subtracting the first part size (y 1 , y 2 , y 3 ) from the sensor size (a s , a v , a l , x k , x l ; s 1 , s 2 , s 3 ) or the corrected sensor size (u 1 , u 2 , u 3 ), a second part size (z 1 ) is calculated, which depends on the nature of the track ( 19 ) and / or a substructure of the track ( 19 ) characterized oscillations.
  13. Procedure ( 53 ) according to one of the preceding claims, characterized in that a quality profile (Q) of the track ( 19 ) or the substructure is determined by a current position (p) of the rail vehicle ( 11 ) and the second part size (z 1 ) is linked to the position (p) and stored as the quality profile (Q).
  14. Tester ( 23 ) to check at least one drive ( 13 ) one on a track ( 19 ) mobile rail vehicle ( 11 ) to a defect, the test apparatus ( 23 ) at least one sensor device ( 27 ) for detecting at least one sensor size (a s , a v , a l , x k , x l ), the vibrations of at least one part ( 15 ) of the drive ( 13 ), and evaluation means ( 25 ) for checking as a function of the sensor size (a s , a v , a l , x k , x l ), whether the defect is present, characterized in that the sensor device ( 27 ) mindes at least one sensor element ( 31 . 33 . 35 ) for detecting a component (a s , a v , a l ) running in a specific direction of an acceleration of the part ( 15 ) having.
  15. Tester ( 23 ) according to claim 14, characterized in that the test device ( 23 ) for carrying out a method ( 53 ) is arranged according to one of claims 1 to 13.
  16. Tester ( 23 ) according to claim 14 or 15, characterized in that the part of the drive ( 13 ) around a bogie ( 15 ).
  17. Tester ( 23 ) according to one of claims 14 to 16, characterized in that the sensor device ( 27 ) a first sensor element ( 31 ) for detecting a transversal to the longitudinal direction of the track and at least substantially horizontally extending shear acceleration (a s ) of the part ( 15 ) and / or a second sensor element ( 33 ) for detecting a vertical acceleration (a v ) of the part ( 15 ) having.
  18. Tester ( 23 ) according to one of claims 14 to 17, characterized in that the evaluation means a central evaluation device ( 25 ) and the test apparatus ( 23 ) a communication network, preferably a wireless ad hoc network ( 51 ), for transmitting the sensor size (a s , a v , a l , x k , x l ), preferably as a sensor signal (s 1 , s 2 , s 3 ), from the sensor device ( 27 ) to the evaluation device ( 25 ) having.
DE102008049224A 2008-09-27 2008-09-27 Method for monitoring drive mechanism of rail vehicle movable on rail track to identify defect at e.g. rotary stand of chassis, involves detecting component running in certain direction of acceleration of pivot mounting as sensor variable Withdrawn DE102008049224A1 (en)

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DE102012219210A1 (en) * 2012-10-22 2014-04-24 Siemens Aktiengesellschaft Method and device for rail break detection
EP2888147B1 (en) 2012-09-28 2020-02-19 Siemens Mobility GmbH Device for a rail vehicle
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DE102018131949A1 (en) * 2018-12-12 2020-06-18 HELLA GmbH & Co. KGaA Method and sensor device for detecting damage to a rail vehicle

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