DE10065954A1 - Monitoring track systems, involves subjecting rail bodies to transient signal at periodic intervals, detecting sound in sold signal at any point with acceleration sensor, transient recorder - Google Patents

Monitoring track systems, involves subjecting rail bodies to transient signal at periodic intervals, detecting sound in sold signal at any point with acceleration sensor, transient recorder

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Publication number
DE10065954A1
DE10065954A1 DE2000165954 DE10065954A DE10065954A1 DE 10065954 A1 DE10065954 A1 DE 10065954A1 DE 2000165954 DE2000165954 DE 2000165954 DE 10065954 A DE10065954 A DE 10065954A DE 10065954 A1 DE10065954 A1 DE 10065954A1
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DE
Germany
Prior art keywords
signal
track
transient
point
acceleration sensor
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Withdrawn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
DE2000165954
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German (de)
Inventor
Stefan Metzner
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE2000165954 priority Critical patent/DE10065954A1/en
Publication of DE10065954A1 publication Critical patent/DE10065954A1/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
    • G01N29/4409—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by comparison
    • G01N29/4436—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by comparison with a reference signal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L23/00—Control, warning, or like safety means along the route or between vehicles or vehicle trains
    • B61L23/04—Control, warning, or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
    • B61L23/042—Track changes detection
    • B61L23/044—Broken rails
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L23/00—Control, warning, or like safety means along the route or between vehicles or vehicle trains
    • B61L23/04—Control, warning, or like safety means along the route or between vehicles or vehicle trains for monitoring the mechanical state of the route
    • B61L23/042—Track changes detection
    • B61L23/045—Rail wear
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/045—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/24—Probes
    • G01N29/2412—Probes using the magnetostrictive properties of the material to be examined, e.g. electromagnetic acoustic transducers [EMAT]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/34—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor
    • G01N29/341—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor with time characteristics
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/26—Scanned objects
    • G01N2291/262—Linear objects

Abstract

The method involves subjecting the rail bodies (1) to a transient signal (5) at periodic intervals. The signal travels through the body as sound in solid material to enable detection at any point using an acceleration sensor (3) and a transient recorder (6) in order to detect changes occurring on the track.

Description

Die Erfindung bezieht sich auf ein Verfahren, welches ermöglicht, Gleisanlagen jeglicher Art auf Veränderungen, Beschädigungen oder Sabotageakte zu überwachen, um diese Veränderungen anzuzeigen.The invention relates to a method which enables track systems of any Type to monitor for changes, damage or acts of sabotage Display changes.

Bisher können Gleisanlagen nur visuell auf Beschädigungen überprüft werden, indem das Gleis abgegangen wird. Diese Art der Überprüfung ist insofern nicht befriedigend, da sie nicht permanent erfolgen kann und nur der subjektiven Entscheidung einer Person unterliegt.So far, track systems can only be checked visually for damage by using the Track is walked off. This type of review is unsatisfactory in that it does cannot take place permanently and is only subject to a person's subjective decision.

Der Erfindung liegt die Aufgabe zugrunde, eine 100-%-Prüfung für Gleisanlagen jeglicher Art durchzuführen. Dieses Prinzip soll im folgenden erläutert werden.The invention has for its object a 100% test for track systems of any kind perform. This principle will be explained in the following.

Ein in feste Körper eingeleitetes Signal, welches z. B. durch einen Hammerschlag auf diesen erzeugt wird, pflanzt sich in diesem in Form eines sogenannten transienten Signals fort. Bleibt der feste Körper unverändert, kann dieses Signal mit all seinen charakteristischen Eigenschaften immer wieder reproduziert werden.A signal introduced into solid bodies, which z. B. by hitting it with a hammer generated, propagates in the form of a so-called transient signal. If the solid body remains unchanged, this signal with all its characteristic can Properties are reproduced again and again.

Bei mechanischen Veränderungen, wie z. B. Einsägen, Einkerbungen und Demontagen wird Sich das empfangene Signal in seiner Charakteristik vom Vorgängersignal unterscheiden und man kann so durch den Vergleich eine Aussage über den Gleiszustand treffen.With mechanical changes, such as. B. sawing, notching and disassembly The characteristics of the received signal differ from the previous signal and you can make a statement about the track condition through the comparison.

Fig. 1 zeigt schematisch den Prüfaufbau der Gleisprüfung nach dem periodischen Signal Vergleichsverfahren. Der Gleiskörper 1 wird in periodischen Zeitabständen mit einem von elektromagnetisch betriebenen Hammerwerk 2 erzeugten transienten Signal beaufschlagt. Das so erzeugte Signal wandert als Körperschallsignal mit all seinen charakteristischen Eigenschaften über große Entfernungen über den Gleiskörper bis er dort von einem Körperschallsensor 3 detektiert wird. Das transiente Signal wird vom Körperschallsensor an einen Transientenrekorder 4 weitergeleitet, welcher alle momentan ankommenden Signale mit einem Referenzsignal vergleicht und auswertet. Von dort aus kann die Information dann per Kabel oder Funk an eine zentrale Leitstelle geleitet werden, welche weiterführende Maßnahmen einleiten kann. Fig. 1 shows schematically the test setup of the track test according to the periodic signal comparison method. The track body 1 is subjected to a transient signal generated by electromagnetically operated hammer mechanism 2 at periodic time intervals. The signal generated in this way travels as structure-borne noise signal with all its characteristic properties over large distances over the track body until it is detected there by a structure-borne noise sensor 3 . The structure-borne noise sensor forwards the transient signal to a transient recorder 4 , which compares and evaluates all currently arriving signals with a reference signal. From there, the information can then be sent by cable or radio to a central control center, which can initiate further measures.

Fig. 2 zeigt den Prüfablauf an einer Gleisanlage ohne Beschädigungen. Der Aufschlag des elektromagnetisch betriebenen Hammers 2 auf das Gleis 1 erzeugt ein transientes Signal 5, dessen charakteristischen Eigenschaften nur von der Beschaffenheit des Gleises abhängen. Störeinflüsse, wie das Befahren des Gleises mit einem Zug, können über geeignete Filtermaßnahmen eliminiert werden. Das so erzeugte Signal wird an geeigneter Stelle mit einem Körperschallsensor 3 abgegriffen und an einen Transientenrekorder 4 weitergeleitet. Dort wird das in periodischen Abständen ankommende Signal 5 mit einem im Vorfeld für den Gleiskörper als gut festgelegten Signal 6 verglichen. Stimmen die beiden Signale in all ihren Charakteristischen Merkmalen überein, kann davon ausgegangen werden, daß das Gleis im zeitlichen Verlauf keinen Veränderungen unterlegen war. Fig. 2 shows the test sequence on a track system without damage. The impact of the electromagnetically operated hammer 2 on the track 1 generates a transient signal 5 , the characteristic properties of which depend only on the nature of the track. Interference, such as driving the track on a train, can be eliminated using suitable filter measures. The signal generated in this way is tapped at a suitable point with a structure-borne noise sensor 3 and passed on to a transient recorder 4 . There, the signal 5 arriving at periodic intervals is compared with a signal 6 which has been defined in advance for the track body as being good. If the two signals match in all their characteristic features, it can be assumed that the track was not subject to changes over time.

Fig. 3 zeigt den Prüfablauf einer Gleisanlage mit Beschädigung 7. Das am Körperschallauf­ nehmer 3 ankommende Signal weicht in mindestens einer charakteristischen Eigenschaft von dem für diesen Streckenabschnitt im Transientenrekorder 4 eingespeicherten Signal 6 ab. Daraus wird der Schluß gezogen, daß an diesem Streckenabschnitt eine Veränderung im zeitlichen Verlauf eingestellt hat. In diesem Fall wurde diese Veränderung durch die Einkerbung 7 hervorgerufen. Es können jedoch auch schleichende Prozesse wie Korrosion oder mechanische Lockerungsvorgänge erkannt werden. Fig. 3 shows the test sequence of a track system with damage. 7 The signal arriving at the structure-borne sound receiver 3 differs in at least one characteristic property from the signal 6 stored in the transient recorder 4 for this section of the route. From this it is concluded that a change in the course of time has occurred on this section of the route. In this case, this change was caused by the notch 7 . However, gradual processes such as corrosion or mechanical loosening can also be detected.

Claims (7)

1. Verfahren zur Überwachung von Gleisanlagen (2), dadurch gekennzeichnet, daß der Schienenkörper in periodischen Abständen mit einem transienten Signal (5) beaufschlagt wird, welches als Körperschall durch diesen wandert um an beliebiger Stelle des Gleis­ körpers mittels eines Beschleunigungsaufnehmers und eines Transientenrekorders (4) Detektiert werden zu können, um am Gleis vorgenommene Veränderungen zu erkennen.1. A method for monitoring track systems ( 2 ), characterized in that the rail body is periodically acted upon with a transient signal ( 5 ), which migrates as structure-borne noise through this body at any point on the track body by means of an accelerometer and a transient recorder ( 4 ) To be able to be detected in order to recognize changes made to the track. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das transiente Signal mittels eines Elektromagneten (2), welcher periodisch angeregt mit seinem Anker einen Stoßimpuls auf das Gleis (1) ausübt.2. The method according to claim 1, characterized in that the transient signal by means of an electromagnet ( 2 ), which periodically excited with its armature exerts a shock pulse on the track ( 1 ). 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß nach Empfang der Signale am Beschleunigungsaufnehmer (3) diese an eine Auswertesoftware (4) weitergegeben werden können, in welcher sie mit einem Referenzsignal verglichen werden, um eine Aus­ sage über die Gleischarakteristik im zeitlichen Verlauf treffen zu können.3. The method according to claim 1, characterized in that after receiving the signals at the accelerometer ( 3 ) they can be passed on to an evaluation software ( 4 ), in which they are compared with a reference signal to make a statement about the track characteristics over time to be able to meet. 4. Verfahren nach Anspruch (1, 3, 6, 7), dadurch gekennzeichnet, daß für verschiedene Streckenabschnitte die jeweiligen Referenzsignale gespeichert werden und diese wiederum mit verschiedenen Parametern (Sommer/Winter) hinterlegt werden können.4. The method according to claim (1, 3, 6, 7), characterized in that for different Route sections the respective reference signals are stored and these again with different parameters (summer / winter) can be stored. 5. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß die in der Auswertesoftware (4) verarbeiteten Signale an eine zentrale Leitstelle weitergeleitet werden um dort bei Un­ regelmäßigkeiten weiterführende Maßnahmen einleiten zu können.5. The method according to claim 3, characterized in that the signals processed in the evaluation software ( 4 ) are forwarded to a central control center in order to be able to initiate further measures in the event of irregularities. 6. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß dieses Verfahren auch als mobile Meßeinrichtung ausgelegt ist, um Schienenstränge in bestimmten Zeitabschnitten im Sinne einer zustandsorientierten Wartung auf Unregelmäßigkeiten zu überprüfen.6. The method according to claim 1, characterized in that this method also as Mobile measuring device is designed to track rails in certain periods to check for irregularities in the sense of condition-based maintenance. 7. Verfahren nach Anspruch 1 und 5, dadurch gekennzeichnet, das Impulsgeber, Detektor und Auswerteeinheit in einem handlichen, kompakten Gerät untergebracht sind, um so auch spontane Messungen am Gleiskörper vornehmen zu können. Dies ist möglich, da der Abgriffsort des in einen festen, abgeschlossenen Körper eingebrachten transienten Signals unabhängig von dessen Position ist. Das heißt die Signalform ist im gesamten Körper gleich und hängt nur von seinen physikalischen Eigenschaften ab.7. The method according to claim 1 and 5, characterized in that the pulse generator, detector and evaluation unit are housed in a handy, compact device to be able to carry out spontaneous measurements on the track. This is possible because the point of tap of the transient introduced into a solid, closed body Signal is independent of its position. That means the waveform is overall The same body and only depends on its physical properties.
DE2000165954 2000-09-01 2000-09-01 Monitoring track systems, involves subjecting rail bodies to transient signal at periodic intervals, detecting sound in sold signal at any point with acceleration sensor, transient recorder Withdrawn DE10065954A1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007034504A1 (en) * 2007-07-24 2009-02-05 Rögener, Baldur Method and monitoring system for monitoring rail tracks
DE102011084160A1 (en) * 2011-10-07 2013-04-11 Siemens Aktiengesellschaft Method and device for rail break detection
WO2015178868A1 (en) * 2014-05-22 2015-11-26 Gokmen Sabri Haluk System which senses rail fractures and cracks through the method of reflection
DE102017215853A1 (en) * 2017-09-08 2019-03-14 Siemens Aktiengesellschaft Device for detecting vibrations
DE112018007754B4 (en) 2018-07-23 2023-08-31 Mitsubishi Electric Corporation Information processing apparatus, information processing system, method and program

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007034504A1 (en) * 2007-07-24 2009-02-05 Rögener, Baldur Method and monitoring system for monitoring rail tracks
EP2022698A2 (en) 2007-07-24 2009-02-11 Baldur Rögener Method and surveillance system for managing rail tracks
EP2022698A3 (en) * 2007-07-24 2009-09-09 Baldur Rögener Method and surveillance system for managing rail tracks
DE102011084160A1 (en) * 2011-10-07 2013-04-11 Siemens Aktiengesellschaft Method and device for rail break detection
WO2015178868A1 (en) * 2014-05-22 2015-11-26 Gokmen Sabri Haluk System which senses rail fractures and cracks through the method of reflection
US10384699B2 (en) 2014-05-22 2019-08-20 Sabri Haluk Gokmen System which senses rail fractures and cracks through the method of reflection
DE102017215853A1 (en) * 2017-09-08 2019-03-14 Siemens Aktiengesellschaft Device for detecting vibrations
DE112018007754B4 (en) 2018-07-23 2023-08-31 Mitsubishi Electric Corporation Information processing apparatus, information processing system, method and program

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