EP2289757A2 - Procédé pour le calibrage d'un capteur de roue d'une installation de voie ferrée par la détection de l'occupation de voie, capteur de roue et installation - Google Patents

Procédé pour le calibrage d'un capteur de roue d'une installation de voie ferrée par la détection de l'occupation de voie, capteur de roue et installation Download PDF

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Publication number
EP2289757A2
EP2289757A2 EP10170574A EP10170574A EP2289757A2 EP 2289757 A2 EP2289757 A2 EP 2289757A2 EP 10170574 A EP10170574 A EP 10170574A EP 10170574 A EP10170574 A EP 10170574A EP 2289757 A2 EP2289757 A2 EP 2289757A2
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EP
European Patent Office
Prior art keywords
wheel sensor
calibration
wheel
sensor
designed
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.)
Granted
Application number
EP10170574A
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German (de)
English (en)
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EP2289757A3 (fr
EP2289757B1 (fr
Inventor
Rüdiger Seidel
Roland Windel
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Siemens AG
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Siemens AG
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Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2289757A2 publication Critical patent/EP2289757A2/fr
Publication of EP2289757A3 publication Critical patent/EP2289757A3/fr
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Publication of EP2289757B1 publication Critical patent/EP2289757B1/fr
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Anticipated expiration legal-status Critical

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/16—Devices for counting axles; Devices for counting vehicles
    • B61L1/169—Diagnosis

Definitions

  • the present invention has for its object to provide a method for calibrating a wheel sensor of a train detection system that allows automatic calibration or calibration of the wheel sensor, without requiring the presence of maintenance personnel in the track is required.
  • This object is achieved according to the invention by a method for calibrating a wheel sensor of a train detection system, wherein a permissibility of a calibration of the wheel sensor indicating calibration permission signal is transmitted to the wheel sensor from a control computer of the train detection system on the release of monitored by the wheel sensor track detection section is determined by the wheel sensor upon receiving the calibration enable signal, whether a calibration is to be performed, and, if so, the wheel sensor performs a calibration of itself.
  • the method according to the invention is advantageous because it allows an automatic calibration of the wheel sensor controlled by the wheel sensor itself.
  • the invention makes use of the fact that time slots are available during ongoing operation of the wheel sensor, in which the wheel sensor is certainly unaffected and thus available for calibration.
  • the control computer of the train detection system which is usually a computer of the internal system of a signal box
  • on the release of monitored by the wheel sensor track detection section out a permissibility of a calibration of the wheel sensor indicating calibration enable signal to the wheel sensor transmitted.
  • a train or rail vehicle may then enter only in a track section, if this is completely cleared by a preceding train.
  • the wheel sensor will now determine upon receiving the calibration enable signal whether calibration is to be performed. This means that the wheel sensor advantageously does not respond to the receipt of each calibration enable signal with a calibration of itself, but only performs a corresponding calibration if this is performed or required according to criteria known to the wheel sensor.
  • the control computer of the train detection system advantageously relieved from tracking for each of the wheel sensors of the train detection system when a re-calibration is required. The decision in this regard is thus made decentralized by the respective wheel sensor itself.
  • the wheel sensor determines that a calibration is required, it is automatically carried out by the wheel sensor itself, ie without the intervention of maintenance personnel being required.
  • the method according to the invention thus enables an automatic calibration of the wheel sensor, wherein a relevant calibration release signal is transmitted from the control computer of the train detection system to the wheel sensor for safety-related reasons.
  • the invention makes use of the fact that the train detection system - consisting of wheel sensors and indoor unit - signal safely clear a track section, at the same time it is clear that none of the relevant track section limiting wheel sensors is influenced by a railway wheel.
  • any activities and operations are referred to, in which the wheel sensor is measured or adjusted with respect to an uninfluenced state. This may include, for example, setting or readjusting switching thresholds or other operating parameters of the wheel sensor with respect to one or more measured variables or measured variables determined in the uninfluenced state of the wheel sensor.
  • the inventive method is developed such that is determined by the wheel sensor based on a comparison of at least one parameter with an associated limit, whether a calibration is performed.
  • This is advantageous because it can be determined in a well-defined manner for the parameter by means of the associated limit value when a calibration of the wheel sensor is to be carried out.
  • the wheel sensor it is also conceivable, for example, for the wheel sensor to recognize the necessity of a calibration on a date-based basis, ie for example, every day, every week, or every month - each time prior to receipt of a calibration enable signal from the control computer - calibrating itself.
  • the inventive method is configured such that is determined by the wheel sensor based on a comparison of the number of detected since the last calibration by the wheel sensor wheels with an associated limit value, whether a calibration is performed.
  • the wheel sensor here comprises a processing device, such as in the form of an Achsmelderechners that is designed to count the detected wheels and to transmit the result to the control computer of the train detection system.
  • the method according to the invention can advantageously also be such that the wheel sensor determines from a comparison of at least one operating parameter of the wheel sensor with an associated limit value whether a calibration is to be performed.
  • the at least one operating parameter of the wheel sensor can be, for example, a signal amplitude or another measured variable of the wheel sensor, which is based on changes in the wheel sensor or the wheel sensor Environment of the wheel sensor, that is, for example, a wear of the rail on which the wheel sensor is mounted, is sensitive.
  • the inventive method is configured such that in a wheel sensor, which is designed to detect an influence of a wheel based on the exceeding of a switching threshold, the switching threshold is reset in the calibration of the wheel sensor.
  • a wheel sensor which is designed to detect an influence of a wheel based on the exceeding of a switching threshold
  • the switching threshold is reset in the calibration of the wheel sensor.
  • the method according to the invention can also be configured in such a way that, as part of the calibration of the wheel sensor, a further switching threshold which indicates the end of an influence by a wheel is additionally set again. If due to a hysteresis different switching thresholds for signaling the beginning As well as the end of a crossing by a wheel are used, so advantageously also the end of the influence of the wheel indicating further switching threshold can be readjusted, so that the wheel sensor is set or calibrated in this regard with respect to the respective current conditions.
  • the inventive method is configured such that in a wheel sensor in the form of a double sensor with two sensor systems at the same time a calibration is performed only for one of the two sensor systems.
  • a calibration is performed only for one of the two sensor systems.
  • the method according to the invention is developed in such a way that an error message signal is transmitted to the control computer by the wheel sensor, provided that during the calibration of one of the two sensor systems a test drive is detected by the respective other sensor system.
  • the wheel sensor by transmitting the error message signal to the control computer in an unexpected encounter during the calibration of one of the two sensor systems, which in principle by that of the control computer transmitted calibration release signal should just be ruled out, assumes the safe state by the control computer, that is usually the indoor system of a signal box, a fault message signal is transmitted, after which the track free reporting section will usually be displayed as "busy".
  • the reliability of track vacancy can be reliably ensured or proven, even if the calibration of the wheel sensor during operation of the railway system in question, that is, without interrupting the train traffic, takes place.
  • the invention further relates to a wheel sensor for monitoring a train detection section of a train detection system.
  • the invention has for its object to provide a wheel sensor for monitoring a train detection section of a train detection system that allows automatic calibration or calibration of the wheel sensor, without requiring the presence of maintenance personnel in the track is required
  • a wheel sensor for monitoring a train detection section of a train detection system, the wheel sensor with an interface for receiving a permissibility of a calibration of the wheel sensor indicating calibration enable signal from a control computer of the train detection system, as well as a processing device formed in such a way in that upon receiving the calibration enable signal, it determines if calibration is to be performed and, if so, initiates calibration of the wheel sensor.
  • the processing device of the wheel sensor according to the invention which may be, for example, an axis-measuring computer, initiates the calibration in such a way that it causes the calibration of the wheel sensor to be carried out. On the one hand, this can happen in such a way that the processing device itself carries out the corresponding calibration completely. On the other hand, it is also possible that the actual calibration of the wheel sensor is carried out partially or completely by other components of the wheel sensor, wherein it is determined by the processing device, whether a calibration is to be performed, and this is possibly caused.
  • the processing device of the wheel sensor according to the invention is developed such that it determines based on a comparison of at least one parameter with an associated limit value, whether a calibration is to be performed.
  • the processing device is designed such that it by means of a comparison of the number of since the last calibration by The wheels detected by the wheel sensor determine whether a calibration is to be performed.
  • the processing device of the wheel sensor according to the invention may also be designed such that it determines, based on a comparison of at least one operating parameter of the wheel sensor with an associated limit value, whether a calibration is to be performed.
  • the wheel sensor according to the invention is developed such that it is designed to detect an influence of a wheel on the basis of exceeding a switching threshold and for calibrating its own by re-adjustment of the switching threshold.
  • the wheel sensor is additionally designed, as part of its calibration, to readjust a further switching threshold which indicates the end of the influence by the wheel.
  • the wheel sensor according to the invention is developed such that it is a double sensor with two sensor systems.
  • wheel sensor according to the invention is designed such that at the same time in each case only one of the two sensor systems, a calibration is performed.
  • the wheel sensor according to the invention can also be developed in such a way that the wheel sensor is designed to transmit a fault message signal to the control computer, if during the calibration of one of the two sensor systems an influence by a wheel is detected by the respective other sensor system.
  • the wheel sensor according to the invention is further developed in such a way that the wheel sensor is designed to transmit a message signal containing the number and the direction of the wheels detected by it to the control computer.
  • the wheel sensor already preprocesses the signals detected by it.
  • the invention further comprises a train detection system having at least one wheel sensor according to the invention or at least one wheel sensor according to one of the aforementioned preferred embodiments of the wheel sensor according to the invention and the control computer for transmitting the calibration enable signal indicating the permissibility of calibration of the wheel sensor to the wheel sensor for release of the track detection section monitored by the wheel sensor.
  • the figure shows a train detection system A, which serves to monitor the occupancy state of a train detection section GFA.
  • the train detection section GFA is limited by a first wheel sensor RS1 and a second wheel sensor RS2.
  • signals S1, S2 are respectively arranged in front of the wheel sensors RS1, RS2.
  • the signals S1, S2 limit a block section BA, that is to say that within the block section BA only one rail vehicle may be present at any one time.
  • the wheel sensors RS1, RS2 of the train detection section GFA are each connected to a control computer R of the train detection system A.
  • a corresponding connection which may be formed both wired and wireless, for the transmission of signals or data messages between the control computer R and the respective wheel sensor RS1, RS2.
  • a dashed horizontal line indicates a separation between the outdoor unit and the indoor unit of a signal box.
  • the two wheel sensors RS1, RS2 are components of the outdoor unit and the control computer R of the train detection system A is a component of the internal system of the interlocking.
  • a first rail vehicle F1 and a second rail vehicle F2 are further shown.
  • the block section BA for the second rail vehicle F2 is blocked by the signal S1 in the illustrated situation, that is to say the signal S1 is at rest since the first rail vehicle F1 has not yet completely cleared the track free signal section GFA.
  • the wheel sensors RS1, RS2 are each double sensors with two sensor systems. As a result, in addition to the detection of passing wheels, a determination of the direction of travel is made possible so that the wheel sensors RS1, RS2 can transmit the number and the direction of the wheels detected by them reporting signals MS1, MS2 to the control computer R of the train detection system A.
  • the control computer R recognizes from the first wheel sensor RS1 the number of wheels or axles enumerated in the train detection section GFA and the number of wheels or axles counted from the track free detection section GFA that the track free reporting section GFA has become free is, the first signal S1 is changed so that the second rail vehicle F2 free ride is granted. This means that the train detection section GFA "free" is reported.
  • a time interval is available, which can be used by the wheel sensors RS1, RS2, if necessary, to perform an automatic calibration of their own. It is essential that the calibration enable signals KFS1, KFS2 display only the permissibility or the possibility of calibration, but not arrange such a calibration relative to the wheel sensors RS1, RS2 in the form of a command. It is also conceivable for the control computer R to inform the respective wheel sensor RS1, RS2 in the calibration enable signal KFS1 or KFS2 of the length of the time window available for the calibration.
  • each of the wheel sensors RS1, RS2 determines itself based on a comparison of at least one parameter an associated limit, whether a calibration for the respective wheel sensor RS1, RS2 at the given time to perform or required.
  • the wheel sensor can determine, for example based on a time criterion, a comparison of the number of wheels detected since the last calibration by the wheel sensor with an associated limit value and / or based on a comparison of at least one operating parameter of the wheel sensor with an associated limit value, if a calibration is to be performed. If it is determined by the respective wheel sensor RS1, RS2 that a calibration is to be performed, this is carried out automatically and independently by the respective wheel sensor RS1, RS2.
  • the wheel sensor is, for example, a wheel sensor whose sensor systems each have a transmitting coil and a receiving coil, an influencing by a wheel being detected by the wheel sensor on the basis of exceeding a switching threshold, as part of the calibration of the respective wheel sensor RS1, RS2 advantageously the threshold in question be reset.
  • the threshold in question be reset.
  • changes or wear of the rail, to which the respective wheel sensor RS1, RS2 is attached are taken into account. If the end of influencing by a wheel is indicated or determined on the basis of the undershooting of a further switching threshold, it can also be readjusted as part of the calibration of the respective wheel sensor RS1, RS2.
  • this can be done, for example, such that, in the event that a sinusoidal oscillation is fed in by means of the transmitting coil and the receiving signal of the receiving coil by the respective wheel sensor RS1, RS2 in a DC voltage is increased, which increases with the wheel passage and falls again, the maximum of the received from the receiving coil sine wave is determined by the fact that in small steps, a shift of the phase of the reception signal is made. Starting from the maximum of the sinusoidal oscillation determined in this way, the switching thresholds can thus be redefined as a percentage.
  • the wheel sensors RS1, RS2 are each double sensors with two sensor systems, it is advantageously possible to calibrate only one of the two sensor systems at the same time. On the one hand, this can be done by calibrating the two sensor systems one after the other in response to a calibration enable signal KFS1 or KFS2. On the other hand, for example, initially only one of the two sensor systems of the wheel sensors RS1, RS2 can be calibrated to the calibration enable signal KFS1 or KFS2 and, after receiving a further calibration enable signal KFS1, KFS2, a calibration of the respectively be made other sensor system. This will ensure in that the calibration of the wheel sensors RS1, RS2 can take place in a technically safe form during the ongoing operation of the train detection system A.
  • the train detection section GFA is shown as "occupied" or considered.
  • the method according to the invention and the wheel sensor according to the invention have the particular advantage that calibration or readjustment of the wheel sensors RS1, RS2 is made possible in an automatic and at the same time reliable and fail-safe manner without the need for maintenance personnel in the track area.
  • This is ensured, in particular, by the fact that the control computer R of the indoor unit indicates or sets a time window in which a calibration of the respective wheel sensor RS1, RS2 can take place by means of the respective calibration enable signal KFS1 or KFS2 transmitted via a bidirectional telegram interface.
  • the actual decision as to whether or not to carry out a calibration is, however, advantageously made by the respective wheel sensor RS1, RS2 itself.

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
EP20100170574 2009-08-11 2010-07-23 Procédé pour le calibrage d'un capteur de roue d'une installation de voie ferrée par la détection de l'occupation de voie, capteur de roue et installation Not-in-force EP2289757B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910037369 DE102009037369A1 (de) 2009-08-11 2009-08-11 Verfahren zum Kalibrieren eines Radsensors einer Gleisfreimeldeanlage, Radsensor sowie Gleisfreimeldeanlage

Publications (3)

Publication Number Publication Date
EP2289757A2 true EP2289757A2 (fr) 2011-03-02
EP2289757A3 EP2289757A3 (fr) 2011-09-07
EP2289757B1 EP2289757B1 (fr) 2012-05-30

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Application Number Title Priority Date Filing Date
EP20100170574 Not-in-force EP2289757B1 (fr) 2009-08-11 2010-07-23 Procédé pour le calibrage d'un capteur de roue d'une installation de voie ferrée par la détection de l'occupation de voie, capteur de roue et installation

Country Status (3)

Country Link
EP (1) EP2289757B1 (fr)
DE (1) DE102009037369A1 (fr)
ES (1) ES2384093T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2899093A1 (fr) * 2014-01-27 2015-07-29 Thales Deutschland GmbH Commutation de redondance de points de détection
US11427233B2 (en) 2016-12-16 2022-08-30 Siemens Mobility GmbH Method for calibrating a wheel sensor, corresponding wheel sensor, and railway installation with a wheel sensor of this kind

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011081424A1 (de) 2011-08-23 2013-02-28 Siemens Aktiengesellschaft Verfahren zum Erfassen von Zustandsänderungen in einer Anordnung und Anordnung zum Erfassen von Zustandsänderungen

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Publication number Priority date Publication date Assignee Title
US5395078A (en) * 1991-12-09 1995-03-07 Servo Corporation Of America Low speed wheel presence transducer for railroads with self calibration
US6371417B1 (en) * 1997-09-04 2002-04-16 L.B. Foster Company A. Pennsylvania Corp. Railway wheel counter and block control systems
US7649350B2 (en) * 2007-06-05 2010-01-19 Aaa Sales & Engineering, Inc. Railcar presence detector

Non-Patent Citations (1)

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Title
None

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2899093A1 (fr) * 2014-01-27 2015-07-29 Thales Deutschland GmbH Commutation de redondance de points de détection
WO2015110371A1 (fr) * 2014-01-27 2015-07-30 Thales Deutschland Gmbh Commutation de redondance de points de détection
CN106029466A (zh) * 2014-01-27 2016-10-12 塔莱斯德国有限责任公司 检测点的冗余切换
CN106029466B (zh) * 2014-01-27 2018-09-07 塔莱斯德国有限责任公司 检测点的冗余切换
US10144439B2 (en) 2014-01-27 2018-12-04 Thales Deutschland Gmbh Redundancy switching of detection points
AU2015208353B2 (en) * 2014-01-27 2019-11-14 Thales Management & Services Deutschland Gmbh Redundancy switching of detection points
AU2015208353C1 (en) * 2014-01-27 2023-02-02 Thales Management & Services Deutschland Gmbh Redundancy switching of detection points
US11427233B2 (en) 2016-12-16 2022-08-30 Siemens Mobility GmbH Method for calibrating a wheel sensor, corresponding wheel sensor, and railway installation with a wheel sensor of this kind

Also Published As

Publication number Publication date
ES2384093T3 (es) 2012-06-29
EP2289757A3 (fr) 2011-09-07
EP2289757B1 (fr) 2012-05-30
DE102009037369A1 (de) 2011-02-17

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