EP3083367A1 - Unité de détection de véhicule, système de détection de véhicule et procédé pour détecter la présence d'un véhicule sur un rail - Google Patents

Unité de détection de véhicule, système de détection de véhicule et procédé pour détecter la présence d'un véhicule sur un rail

Info

Publication number
EP3083367A1
EP3083367A1 EP14870833.2A EP14870833A EP3083367A1 EP 3083367 A1 EP3083367 A1 EP 3083367A1 EP 14870833 A EP14870833 A EP 14870833A EP 3083367 A1 EP3083367 A1 EP 3083367A1
Authority
EP
European Patent Office
Prior art keywords
rail
vehicle detector
sensor
vehicle
detector unit
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Withdrawn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
EP14870833.2A
Other languages
German (de)
English (en)
Other versions
EP3083367A4 (fr
Inventor
Michael John Smith
Graham William LYFORD
Jefferson Grey Harcourt
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.)
Grey Innovation Pty Ltd
Original Assignee
Grey Innovation Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2013904930A external-priority patent/AU2013904930A0/en
Application filed by Grey Innovation Pty Ltd filed Critical Grey Innovation Pty Ltd
Publication of EP3083367A1 publication Critical patent/EP3083367A1/fr
Publication of EP3083367A4 publication Critical patent/EP3083367A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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 trains
    • B61L23/06—Control, warning or like safety means along the route or between vehicles or trains for warning men working on the route
    • 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
    • B61L1/02—Electric devices associated with track, e.g. rail contacts
    • 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
    • B61L1/02—Electric devices associated with track, e.g. rail contacts
    • B61L1/06—Electric devices associated with track, e.g. rail contacts actuated by deformation of rail; actuated by vibration in rail
    • 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
    • B61L1/163—Detection devices
    • B61L1/165—Electrical
    • 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 trains
    • 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 trains
    • B61L23/04—Control, warning or like safety means along the route or between vehicles or trains for monitoring the mechanical state of the route
    • B61L23/042—Track changes detection
    • B61L23/047—Track or rail movements
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B26/00—Tracks or track components not covered by any one of the preceding groups
    • E01B26/005—Means for fixing posts, barriers, fences or the like to rails

Definitions

  • the invention relates to a vehicle detector unit, a vehicle detector system and a method for detecting presence of a vehicle on a rail. More particularly, hut not exclusively, the inventio relates t a vehicle detector unit for detecting presence of a train on a rail for providing an alert, to a worksite.
  • train detector systems are prone to unreliability, faulty detection of threat, and possible failure to identif threats i certain circumstances.
  • Examples of the present invention seek to provide an improved train detection system which overcomes or at leas alleviates disadvantages associated with existing systems.
  • a vehicle detector unit for detecting presence of a vehicle moving, along a rail, including a distance sensor for sensing a body of the vehicle, a rail translation sensor for sensing translation of the rail,, a rail torsion sensor for sensing torsion of the rail, and a processor adapted to process data received from the distance sensor, the rail translation senso and the rail torsion sensor, whereby the processor applies an algorithm to said data to detemiine whether to output an alert, signal.
  • the processor applies said algorithm to detect uncorrelated data received from the distance sensor, the rail translatio sensor and the rail torsion sensor to distinguish between a dangerous event, in which case the vehicle detector unit outputs an alert signal, and a non-dangerous event, whereby the processor identifies a. non-dangerous event in response to detecting uncorrelated data, and the processor identifies a dangerous event i response to delecting correlated data.
  • the processor is arranged to detect possible degradation of operation of the vehicle detector unit when greater than a predetermined threshold of non-dangerous events are detected within a predetermined period and in the absence of detecting a dangerous event. More preferably, the vehicle detector unit output an error signal in response to detecting possible degradation of operation of the vehicle detector unit, in a preferred form, the processor is arranged to detect correlated data when there is consistency between data received from the distance sensor, the rail translation sensor and the rail torsion sensor to indicate presence of a vehicle moving, along the rail, based on threshold values for each of the sensors. More preferably, the processor is arranged to detect correlated data for fast short vehicles and slow long vehicles on the rail, and to detect uncorrelated data for wind-blown debris, dust, rain and the like.
  • the processor i arranged to distinguish presence of vehicles on adjacent tracks from presence of vehicles on said rail,
  • the distance sensor is in the form of an ultrasonic sensor.
  • the rail translation sensor is in the form of an aceelerometer.
  • the rail torsion sensor is in the form of a gyroscopic sensor.
  • the vehicle detector unit includes base for passing beneath said rail, a first clamp which is fixed relative to the base for clamping one side of the rail, and a second clamp which is selectively movable relati ve to the base for clamping an opposite side of the rail. More preferably, the second clamp is selectively held in place relative to the base by operation of a releasable fastener.
  • a vehicle detector system for detecting presence of a vehicle moving along a rail relative to a work site, said system includin a pair of vehicle detector units at spaced locations along the rail, a first one of the vehicle detector units being located in one direction from the work site and a second one of the vehicle detector units being located in an opposite direction from the work site, each of the vehicle detector units being a vehicle detector unit as claimed in claim 1, said system further including a site warning unit located at the work site, wherein the site warning unit is in communication with the vehicle detector units, and the site warning unit outputs audible and/or visual alerts in response to an alert signal received from either of the vehicle detector units.
  • the site warning unit is in communication with the vehicle detector units by way of radio communication.
  • a method for detecting presence of a vehicle on a rail including the steps of:
  • Figure la shows a side view of a vehicle detector unit in accordance with an example of the present invention
  • Figure la shows a bottom perspective view of the vehicle detector unit
  • Figure 2 show a detailed transparent view of one end of the vehicle detector unit
  • Figure 3 is a diagrammatic representation of an algorithm used by a vehicle detector unit
  • Figure 4 is a diagrammatic view of a vehicle detector system in accordance with an example of the present in vention
  • Figure 5 is a diagrammatic representation of hardware architecture of a repeater unit of the vehicle detector system
  • Figure 6 is a diagrammatic representation of procedure followed by the vehicle detector system
  • Figure 7 is a diagrammatic representation of the vehicle detecto system when installed to provide warning to worksite
  • Figure 8 shows a detailed side vie of a vehicle detector unit in accordance with an example of the present invention, depicting clamps of the vehicle detector unit;
  • Figure 9 shows a side view of a vehicle detector unit in accordance with the example shown in Figure 8.
  • Figure 10 shows a partial sectional side view of one end of the vehicle detector unit shown in Figure 9.
  • a vehicle detector system which is able to provide warning to a worksite of a train (or other vehicle) approaching the worksite along a rail.
  • the vehicle detector unit ineludes a distance sensor, a. rail translation, sensor, a rail torsion sensor and a processor, the vehicle detector unit is able to combine data received from the different sensors so as to achieve an improved level of reliability, particularly in detecting dangerous events and i avoiding being triggered by false triggers.
  • Figures la to 3 depict a vehicle detector unit 10 for detecting presence of a vehicle moving along a rail 12, including a distance sensor 14 for sensing a body of the vehicle, a rail translation sensor 16 lor sensing translation of the rail 12, mid a rail torsion sensor 18 for sensing torsion of the rail 12.
  • the vehicle detector unit 10 also includes a processor adapted to process data received from the distance sensor 14, the rail translation sensor 16 and the rail torsion sensor 18, whereby the processor applies an algorithm to the data to determine whether to output an alert signal
  • the alert signal can be transmitted t produce an audible and/or visual alert to a worksite which is remote to the vehicle detector unit 10, as depicted in the vehicle detector system shown in Figures 4 to 7.
  • the processor may be located within a housing 20 of the vehicle detector unit.
  • the processor applies the algorithm to detect uncorrelated data received from the distance sensor 14, the rail translation sensor 16 and the rail torsion sensor 18 to distinguish between a dangerous event, in which case the vehicle detector unit 10 outputs an alert signal, and a non-dangerous event, in which ease the vehicle detector unit 10 does not output an alert signal.
  • the processor identifies a non-dangerous event in response to detecting uncorrelated data, and the processor identifies a dangerous event in response to detecting correlated data.
  • This processing of data is performed by combining data from the distance sensor 14, the translation sensor 16 and the rail torsion sensor 18 in a manner which is depicted by the flow chart in Figure 3,
  • the processor recognises criteria according to the algorithm wherein data from the sensors is correlated to indicate presence of a vehicle movin along the rail 12, an alert signal is provided as an output of the vehicle detector unit 10.
  • the processor may be arranged to detect possible degradation of operation of the vehicle detector unit 10 when greater than: a predetermined threshold of non-dangerous e vents are detected within a predetermined period and in the absence of detecting a dangerous event. In this case, the vehicle detector unit 10 may output an error signal in response to detecting possible degradation of operation of the vehicle detector unit.
  • the system may use an alternative signal to indicate that, the system may be unable to function.
  • the system may use an alert sound from repeater units and site warning units to warn operators that the system may be unable to function and that the system may be less reliable.
  • the processor may be arranged to detect correlated data when there is consistency between data received from the distance sensor 14, the rail translation sensor 16 and the rail torsion sensor 18 to indicate presence of a vehicle moving along rail, based on threshold values for each of the sensors 14, 16, 18.
  • the processo may be arranged to collect correlated data for fast short vehicles and slow long vehicles on the rail 12, and to detect uncorrelated data for wind-blown debris, dust, rain and the l ike.
  • the processor may be arranged to distinguish presence of vehicles on adjacent tracks from presence of vehicles on the rail 12.
  • the distance sensor 14 may be in the form, of an. ultrasonic sensor
  • the rail translation sensor 16 may be in the form of an accelerometer
  • the rail torsion sensor 18 may be in the form of a gyroscopic sensor.
  • the vehicle detector unit 10 incorporates microelectronics, complex signal processing, and radio communications technology.
  • Ultrasonic sensing technology combined with precision measurement of rail translation and rail torsion provides filtering thai, when combined, provide a level of reliability that is superior to existing vehicle protection products.
  • improved system reliability is achieved via. combined monitoring of vehicular presence by way of combining a distance sensor with rail translation and rail torsion sensors.
  • the present invention uses an algorithm which combines data collected on the ultrasonic sensor, accelerometer and gyroscope to manage scenarios including but not limited to fast short vehicles, long slow vehicles and vehicles on adjacent tracks,
  • digital signal filtering and temporal synchronisation are used for the Accelerometer, Gyroscope and Ultrasonic sensors.
  • Ultrasonic sensor phenomena unrelated to vehicle defection, as defined by duration, distance thresholds and coiTelation with other sensors, is implemented such that, these phenomena are removed to the reduce effect on digital signal filtering in following stages. If many phenomena are removed in a short time, a degraded system signal is triggered.
  • the ultrasonic sensor is used such that a threshold and minimum time period are required to trigger an alarm, The time period is shortened if a detection trigger is present from MEMS sensors.
  • a MEMS trigger is determined primarily by a threshold on the ratio of RMS powe in short and long terms whereby the long term period follows the short term period, A MEMS trigger is continued while the long term RMS power remains above a threshold. The MEMS trigger is finally continued by way of a fixed period after the aforementioned triggers.
  • Thresholds and timers vary between gyroscopic and aecelerometric sensors. Accordingly, examples of the present invention use a distance sensor in combination with torsion and translation sensors, using analogue distance, which is useful for defining thresholds and determining between rain and trains, rathe than simple digital. (on/off) "presence".
  • the present invention uses soundwaves from the ultrasonic sensor to determine distance to the train.
  • the vehicle detector unit 10 may include a base 22 for passing beneath the rail, a first damp 24 which is fixed relative to the base 22 for clamping one side of the rail 12, and a second clamp 26 which is selectively movable relative to the base 22 for clamping an opposite side of the rail 12 (see Figure 1A and Fig re IB).
  • the second clamp 26 may be selectively held in place relative to the base 22 by operation of a releasable fastener 28 which can be in the form of a threaded base and a wing nut. As the second clam 26 is able to be slid on and locked to the base 22 by a single wing nut, this makes for very fast attachment and reduces the time spent by an operator on the track in the danger zone.
  • the profile of the base 22 allows for easy installation with minimal disruption to ballast (rock) from under the foot of the rail 12 during installation. Accordingly, examples of the present invention ma be quick to install and may support multiple rail standard sections. Accordingly, the vehicle detector unit 10 may be readily installed temporarily when work is to be undertaken at. a worksite at or near a section of the rail 12.
  • one aspect of the present invention provides a vehicle detector system 30 for detecting presence of a vehicle moving along a rail 12 relative to a worksite 32.
  • the system 30 includes a pair of vehicle detector units 10 at spaced locations along the rail 1.2, a first one of the vehicle detector units 10 being located in one direction from the worksite 32 and a second one of the vehicle detector units 10 being located in an opposite direction from the worksite 32.
  • the first vehicle detector unit 10 is for detecting trains incoming to the worksite 32 while the second one of the vehicle detector units 10 is for detecting trains leaving the worksite such that they do not initiate an alarm.
  • Each of the vehicle detector units 10 may be a vehicle detector unit 10 as shown in Figures la to 3 and as described above.
  • the system 30 further includes a site warning unit 34 located at the worksite 32.
  • the site warning unit 34 is in communication with the vehicle detector units 10 and the site warning unit 34 outputs audible and/or visual alerts in response to an alert signal received from either of the vehicle detector units 10.
  • the site warning unit 34 may be in communication with the vehicle detector units
  • Radio communication certification is related to output power (effective isotropic radiated power). To achieve acceptable range through radiofrequency opaque objects in the Frenel zone, high sensitivity receivers are required. Range is related to elevation so as the train detectors are- low on the track, and repeater units (used close to the train detectors) are on tripods.
  • the system 30 may include a plurality of repeater units 36 which have sirens and lights on a tripod with an additional long distance radio. Hardware architecture of the repeater units 36 is shown in Figure 5.
  • the site warning units 3.4 may each include a siren and lights on a tripod.
  • the vehicle detector system 30 may also include personal warning units 38 which may be clipped onto a belt by workers, and lookout units 40 which may be held by a lookout person.
  • Figure 6 shows a series of steps in a flowchart which may be followed by examples of the vehicle detector system 30, and Figure 7 shows a diagrammatic view where vehicle detector units 10 are installed at a distance of 1.5km at either side of the worksite 32.
  • Figures 8 to 10 depict a vehicle detector unit 10 in accordance with a further example of the present invention.
  • the vehicle detector unit 10 shown in Figures 8 to 10 is generally similar to the one shown in Figures la to 7, and like features are denoted with like reference numerals,
  • the vehicle detector unit 10 of Figures 8 to 10 differs in that it includes a cam 42 for operating the second clamp 26 in place of the nut (or wing nut) used in the example shown in Figure la.
  • the vehicle detector unit 10 of Figures 8 to 1.0 also differs in that it includes heat shielding 44 to protect the housing 20 and the processor within the housing 20.
  • the cam 42 is operated by way of a lever 46. and may be configured for quick operation such that the cam 42 is able to be operated t engage/disengage the clamp 26 against the rail 12 by less than a single full turn of the lever 46.
  • the first and second clamps 24, 26 are able to accommodate rails 12 of different profiles - rails of different profiles have been superimposed in Figure 9 to illustrate this aspect.
  • heat shielding 44 is provided below the housing 20 to protect from heat the housing 20 and the processor within the housing 20.
  • the applicant has determined that at locations where the vehicle detector unit 10 is to be used there may be damaging heat not only from direct sunlight but also in the form of radiation from "ballast" rocks beneath or adjacent the rails, with the rocks acting in a similar manner to coal of a barbecue.
  • the heat shielding 44 may be in the form of a sled mounted to a underside of the vehicle detector unit 10 with an air gap between the heat shielding 44 and the vehicle detector unit 10 along a substantial portion of a length of the sled as shown in Figure 10 so as to insulate the vehicle detector unit, 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Abstract

La présente invention concerne une unité de détection de véhicule pour détecter la présence d'un véhicule se déplaçant le long d'un rail, comprenant un capteur de distance pour détecter une carrosserie de véhicule, un capteur de translation de rail pour détecter la translation du rail, un capteur de torsion du rail pour détecter la torsion du rail et un processeur conçu pour traiter des données reçues du capteur de distance, du capteur de translation du rail et du capteur de torsion du rail, grâce à quoi le processeur applique un algorithme auxdites données pour déterminer s'il faut délivrer ou non un signal d'alerte.
EP14870833.2A 2013-12-17 2014-12-17 Unité de détection de véhicule, système de détection de véhicule et procédé pour détecter la présence d'un véhicule sur un rail Withdrawn EP3083367A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2013904930A AU2013904930A0 (en) 2013-12-17 Vehicle detector unit, vehicle detector system and a method for detecting presence of a vehicle on a rail
PCT/AU2014/050425 WO2015089581A1 (fr) 2013-12-17 2014-12-17 Unité de détection de véhicule, système de détection de véhicule et procédé pour détecter la présence d'un véhicule sur un rail

Publications (2)

Publication Number Publication Date
EP3083367A1 true EP3083367A1 (fr) 2016-10-26
EP3083367A4 EP3083367A4 (fr) 2017-12-13

Family

ID=53401801

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14870833.2A Withdrawn EP3083367A4 (fr) 2013-12-17 2014-12-17 Unité de détection de véhicule, système de détection de véhicule et procédé pour détecter la présence d'un véhicule sur un rail

Country Status (3)

Country Link
US (1) US20160311452A1 (fr)
EP (1) EP3083367A4 (fr)
WO (1) WO2015089581A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160144875A1 (en) * 2014-11-24 2016-05-26 Electronics And Telecommunications Research Institute Apparatus and method for distributed processing of train monitoring traffic based on hierarchical wireless sensor network
WO2017015110A1 (fr) 2015-07-17 2017-01-26 Harsco Technologies LLC Système et procédé d'avertissement de rail
CN105510919B (zh) * 2015-12-01 2017-12-29 南京富岛信息工程有限公司 一种智能铁鞋低温测距装置及测距方法
WO2019122193A1 (fr) * 2017-12-20 2019-06-27 Railway Metrics And Dynamics Sweden Ab Unités de détection pour surveiller un train roulant sur une voie ferrée, ainsi que systèmes et procédés associés
FR3156912B1 (fr) * 2023-12-14 2025-10-31 Commissariat Energie Atomique Procédé de détection d’un défaut dans une structure à l’aide d’ondes mécaniques hautes fréquences

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6113037A (en) * 1991-02-04 2000-09-05 Eva Signal Corporation Railroad maintenance-of-way personnel warning system apparatus and method therefor
DE4428784A1 (de) * 1994-08-13 1996-02-15 Ee Signals Gmbh & Co Kg Verfahren zur Erfassung von Gefahrenquellen
US5628479A (en) * 1995-12-12 1997-05-13 Harmon Industries, Inc. Vital wheel detector
US8109474B2 (en) * 2009-11-27 2012-02-07 Bartek Peter M Dual ultrasonic train detector
WO2011153114A2 (fr) * 2010-05-31 2011-12-08 Central Signal, Llc Détection de trains
NO331979B1 (no) * 2010-09-17 2012-05-14 Stiftelsen Norsar System og metode for tidlig deteksjon av tog

Also Published As

Publication number Publication date
WO2015089581A1 (fr) 2015-06-25
US20160311452A1 (en) 2016-10-27
EP3083367A4 (fr) 2017-12-13

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