EP4201785A1 - Überwachungseinrichtung für eisenbahn-verkehrserfassungssysteme - Google Patents

Überwachungseinrichtung für eisenbahn-verkehrserfassungssysteme Download PDF

Info

Publication number
EP4201785A1
EP4201785A1 EP22213548.5A EP22213548A EP4201785A1 EP 4201785 A1 EP4201785 A1 EP 4201785A1 EP 22213548 A EP22213548 A EP 22213548A EP 4201785 A1 EP4201785 A1 EP 4201785A1
Authority
EP
European Patent Office
Prior art keywords
magnet
rod
feeler
return member
detection system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22213548.5A
Other languages
English (en)
French (fr)
Inventor
Ismaël FILLONNEAU
Xavier PAYET
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.)
Snic Rail
Stimio SAS
Original Assignee
Snic Rail
Stimio SAS
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
Application filed by Snic Rail, Stimio SAS filed Critical Snic Rail
Publication of EP4201785A1 publication Critical patent/EP4201785A1/de
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • B61L1/04—Electric devices associated with track, e.g. rail contacts mechanically actuated by a part of the vehicle
    • 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
    • B61L1/164—Mechanical
    • 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 invention relates to the field of railway traffic detection systems.
  • the invention relates to the monitoring of railway traffic detection systems.
  • the detection systems are generally positioned in the vicinity of a rail of a railway track and conventionally comprise one or more feelers of an electrical contact actuation mechanism.
  • each wheel of the train causes the sensor(s) to move from a high position to a low position. More precisely, each wheel comprising a tread having a projecting edge from which a bead extends, it is the bead of each wheel which presses against the feelers.
  • the feeler When the feeler is in the up position, the electrical contacts are separated from each other and open an electric detection circuit, when the feeler is in the down position, the electrical contacts are in contact with each other and close the electric detection circuit.
  • An object of the invention is therefore to propose a solution making it possible to be able to monitor, remotely and in a simple and reliable manner, the operation of rail traffic detection systems.
  • a system for detecting the presence of a railway vehicle comprising a housing, a feeler outside the housing, at least one rod which carries the feeler and which is mounted in the housing to pivot around a longitudinal axis between a high position and a low position of the probe, a damping cylinder arranged to slow down a rotational movement of the rod from the low position to the high position, and a return member resting against an integral arm rotation of the rod.
  • the system further comprises a monitoring device comprising an electronic circuit for measuring a position of a movable element with the rod when the latter pivots between the two positions.
  • the invention is particularly advantageous because the electronic circuit for measuring the position of a movable element with the rod makes it possible to follow with simplicity and reliability the successive rotations of said rod between the high position and the low position of the feeler.
  • the detection system according to the invention therefore comprises a monitoring device making it possible to effectively monitor its operation.
  • the mobile element is a portion of the return member.
  • the return member is an elastic strip having one end rigidly fixed to the casing and, on the opposite end, one end forming the free end on which the magnet is positioned.
  • the magnet is fixed to a support fixed to the elastic blade so that the magnet extends close to the free end portion of the elastic blade and moves with it.
  • the electronic circuit further comprises processing means and transmission means.
  • the electronic circuit is fixed on a lid closing the case.
  • the damping jack is a hydraulic jack comprising a hydraulic fluid, the system further comprising a temperature sensor arranged to measure the ambient temperature.
  • the invention also relates to a monitoring device for a detection system as previously described.
  • the detection system 1 comprises a housing 2 as well as a first feeler 3 and a second feeler 4 extending outside of the housing 2.
  • the first feeler 3 and the second feeler 4 are generally shaped like a bent bar of circular section.
  • the detection system 1 makes it possible to visualize the positioning of the detection system 1 relative to a rail 5 (here represented by a cross-sectional view) of a railway track.
  • the detection system 1 is positioned in the vicinity of the rail 5 such that one end 3a of the first feeler 3 and one end 4a of the second feeler 4 face a head 5a of the rail 5.
  • the detection system 1 comprises a first rod 6 mounted in the casing 2 to extend and pivot along an axis X and a second rod 7 mounted in the casing 2 to extend and pivot along an axis Y, the axis X being parallel to the Y axis.
  • the first rod 6 carries the first probe 3 and the second rod 7 carries the second probe 4 in such a way that a movement from top to bottom and from bottom to top of the probe 3, 4 causes a rotation of the rod 6, 7 and vice versa.
  • Each rod is part of a mechanism for actuating contacts of an electric detection circuit known in itself (the rod moves for example a lever moving a contact of the electric circuit).
  • the detection system 1 further comprises a first return member 8 and a second return member 9.
  • the first return member 8 is an elastic blade having an end 8b rigidly fixed to the case 2 and a free end portion 8a which bears against an arm 10.1 which extends perpendicularly to the first rod 6 and which is integral in rotation with the first rod 6.
  • the second return member 9 is an elastic strip having one end 9b rigidly fixed to the case 2 and a free end portion 9a which bears against an arm 11.1 which extends perpendicular to the second rod 7 and which is integral in rotation with the second rod 7.
  • an arm 10.2 extends symmetrically to the arm 10.1 and has one end 10a which is connected to the rod of a piston of a first damping cylinder 12.
  • An arm 11.2 extends symmetrically to the arm 11.1 and has one end 11a which is connected to the rod of a piston of a second damping cylinder 13.
  • first kinematic chain of the detection system 1 which comprises the first feeler 3, the first rod 6, the first return member 8, the arms 10.1, 10.2 and the first cylinder of damping 12.
  • the first feeler 3 is in the high position opposite the head 5a of the rail 5: the contacts of the detection circuit are separated from each other and the detection circuit is open.
  • the first feeler 3 will change position, between its high position and a low position, due to the passage of the wheels of the railway vehicle.
  • the change of position between the high position and the low position of the first feeler 3 corresponds to a rotational movement of the first rod 6 along the axis X.
  • the first rod 6 pivots around the axis X.
  • the arm 10.1 will exert a force on the free end portion 8a of the first return member 8, and more precisely will cause the free end portion 8a to descend and thus elastically deform the first return member 8. same time, the arm 10.2 will pull, via its end 10a, on the piston rod of the first damping cylinder 12 to bring it out.
  • the detection circuit can control the switching on of a traffic light, the emission of an alert in a railway traffic management station, etc.
  • the free end portion 8a of the first return member 8 will return, under the effect of the elasticity of the first return member 8, to its initial position. by pressing on arm 10.1 to raise it.
  • the first rod 6 will thus pivot around the axis X so that the first feeler 3 moves from the low position to the high position.
  • the arm 10.2 will push, via its end 10a, the piston rod of the first damping cylinder 12 to make it retract.
  • the first damping cylinder 12 is thus arranged to slow down the rotational movement of the first rod 6 (from the low position to the high position of the first feeler 3).
  • the first damping cylinder 12 therefore sets a duration of the rotational movement of the first rod 6 from the low position to the high position of the first feeler 3.
  • a second kinematic chain of the detection system 1 (which comprises the second feeler 4, the second rod 7 pivoting around the Y axis, the second return member 9, the arms 11.1, 11.2 and the second actuator damping 13) is obviously similar to what has just been described for the first kinematic chain of the detection system 1.
  • the detection system 1 could obviously only include the first kinematic chain.
  • the detection system 1 further comprises a monitoring device 15 comprising an electronic measurement circuit 16 arranged to measure the position of a first movable element with the first rod 6 when the latter pivots between the high position and the low position of the first sensor 3.
  • the electronic measurement circuit 16 is arranged to measure the position of a second mobile element with the second rod 7 when the latter pivots between the high position and the low position of the second feeler 4.
  • the first movable element is the free end portion 8a of the first return member 8 or an adjacent portion thereof and the second movable element is the free end portion 9a of the second return member 9 or an adjacent portion thereof.
  • the first magnet 17 is positioned on a support fixed to the first return member 8 to move with the free end portion 8a of said first return member 8; and the second magnet 18 is positioned on a support fixed to the second return member 9 to move with the free end portion 9a of said second return member 9.
  • the first magnetic sensor 19 is arranged to measure an intensity of the magnetic field of the first magnet 17 and the second magnetic sensor 20 is arranged to measure an intensity of the magnetic field of the second magnet 18, the intensity of the magnetic field being a function of the distance separating the magnet from the sensor.
  • the first magnetic sensor 19 and the second magnetic sensor 20 are Hall effect sensors.
  • the first magnet 17 and the first magnetic sensor 19 are therefore dedicated to the first kinematic chain of the detection system 1.
  • the second magnet 18 and the second magnetic sensor 20 are dedicated to the second kinematic chain of the detection system 1.
  • the electronic measurement circuit 16 is fixed on a cover 14 closing the box 2 of the detection system 1.
  • the first magnetic sensor 19 is positioned close to the first magnet 17 and the second magnetic sensor 20 is positioned close to the second magnet 18 when the return members 8, 9 are at rest.
  • the operation of the monitoring device 15 will now be described, focusing more particularly on the first kinematic chain of the detection system 1.
  • the first feeler 3 passes from the high position to the low position. Consequently, the arm 10.1 elastically deforms the first return member 8. The distance separating the first magnet 17 from the first magnetic sensor 19 will thus increase. The intensity of the magnetic field of the first magnet 17 measured by the first magnetic sensor 19 will therefore decrease.
  • the free end portion 8a of the first return member 8 will return to its initial position by pressing on the arm 10.1.
  • the distance separating the first magnet 17 from the first magnetic sensor 19 will thus decrease.
  • the intensity of the magnetic field of the first magnet 17 measured by the first magnetic sensor 19 will therefore increase.
  • the intensity of the magnetic field of the first magnet 17 measured by the first magnetic sensor 19 will therefore vary between a maximum corresponding to the high position of the first probe 3 (the first magnet 17 is closest to the first magnetic sensor 19) and a minimum corresponding to the low position of the first feeler 3 (the first magnet 17 is furthest from the first magnetic sensor 19).
  • the first magnetic sensor 19 and the second magnetic sensor 20 produce electrical signals which are processed by processing means 16a of the electronic measurement circuit 16 to which they are connected.
  • the electronic measurement circuit 16 comprises, in addition to the processing means 16a, transmission means 16b.
  • the processing means 16a are connected to the first magnetic sensor 19 and to the second magnetic sensor 20 and thus recover magnetic field intensity measurement data (from the first magnet 17 and from the second magnet 18).
  • the processing means 16 comprises a processing component which is for example a microcontroller (in English, Microcontroller Unit - MCU), a processor, a digital signal processing processor or DSP (in English, Digital Signal Processor ) , a logic circuit programmable or FPGA (in English, Field Programmable Gate Array ) or even an application integrated circuit or ASIC (in English, Application-Specific Integrated Circuit ) .
  • the transmission means 16b are connected to the processing means 16a.
  • the transmission means 16b thus recover processed magnetic field intensity measurement data in order to transmit them, for example, to a central monitoring station.
  • the transmission of the measurement data to the monitoring center is carried out via a wireless link.
  • the transmission processing means 16b comprise a radio frequency transmission component operating, by way of example, according to 4G or LoRa ( Long-Range ) technology or any other means of wired or wireless telecommunication.
  • the electronic measurement circuit 16 is for example mounted on a PCB 21 (in English, Printed Circuit Board ) . Provision is also made for the electronic measurement circuit 16 to comprise means of power supply preferably via a power supply network running along the track (it is possible as a variant to provide an autonomous power supply via a battery or batteries).
  • the PCB 21 is thus advantageously embedded in the cover 14 closing the case 2 of the detection system 1.
  • the PCB 21 is fixed to the cover 14 via screws 14a. This makes it possible to easily equip an existing detection system by fixing the magnets on the elastic blades and by installing the electronic measurement circuit 16 directly in the existing cover 14, or by replacing the existing cover with a cover 14 pre-equipped with the circuit measuring electronics 16.
  • the monitoring device 15 thus makes it possible to measure the position of the first magnet 17 (respectively of the second magnet 18) which is representative of the position of the free end portion 8a of the first return member 8 (respectively of the end portion free 9a of the second return member 9), itself representative of the position of the first feeler 3 (respectively of the second feeler 4).
  • the monitoring device 15 also makes it possible to determine the breakage of a feeler from among the first feeler 3 and the second feeler 4. Indeed, if the first magnetic sensor 19 measures variations in the intensity of the magnetic field (of the first magnet 17 ) but that, at the same time, the second magnetic sensor 20 does not measure any variation in the intensity of the magnetic field (of the second magnet 18), it is possible to deduce that the second sensor 4 is broken. A maintenance operation will then have to be carried out to repair the second feeler 4.
  • the monitoring device 15 also makes it possible to measure successive variations in the intensity of the magnetic field (of the first magnet 17 and of the second magnet 18) linked to the successive passage of the wheels of a railway vehicle. By measuring a time difference between maxima and/or minima of the intensity of the magnetic field, the monitoring device 15 makes it possible to estimate the speed of movement of the rail vehicle (for example by having prior knowledge of the longitudinal spacing of the wheels of railway vehicles using the track).
  • the monitoring device 15 also makes it possible to measure variations in the intensity of the magnetic field of the first magnet 17 (respectively of the second magnet 18) which are representative of a speed of the rotational movement of the first rod 6 (respectively of the second rod 7) between the high position and the low position of the first feeler 3 (respectively of the second feeler 4). This makes it possible in particular to determine the state of wear, and in particular the quality of the hydraulic fluid, of the first damping cylinder 12 (respectively of the second damping cylinder 13).
  • the variations measured (by the first magnetic sensor 19) of the intensity of the magnetic field (of the first magnet 17), when the first rod 6 pivots from the low position to the high position of the first feeler 3, are very fast, it is possible to deduce that the first damping cylinder 12 requires a maintenance operation.
  • the detection system 1 further comprises a temperature sensor (not shown) arranged to measure an ambient temperature.
  • a temperature sensor (not shown) arranged to measure an ambient temperature.
  • the temperature sensor is for example connected to the processing means 16a of the electronic measurement circuit 16 (or directly connected to the transmission means 16b of the electronic measurement circuit 16) so that temperature measurement data are transmitted, for example , to the central monitoring station. It is thus possible to correlate the hydraulic fluid temperature measurement data with the magnetic field intensity measurement data (of the first magnet 17 and of the second magnet 18).
  • the first rod 6 is in one piece with the first feeler 3.
  • the second rod 7 is in one piece with the second feeler 4.
  • the first rod 6 could be a separate part from the first feeler 3 and the second rod 7 could be a separate part from the second feeler 4.
  • first return member 8 and the second return member 9 are not necessarily elastic blades but could for example be helical springs mounted vertically.
  • the detection system 1 could only include the first kinematic chain, that is to say only the first feeler 3, the first rod 6, the first return member 8, the arm 10.1, the arm 10.2 and the first damping cylinder 12.
  • first movable element and the second movable element are respectively the free end portion 8a of the first return member 8 and the end portion free 9a of the second return member 9 but this is not limiting.
  • first mobile element and the second mobile element could respectively be a portion of the arm 10.1 and a portion of the arm 11.1.
  • An electronic measurement circuit 16 has been described here which comprises a first magnetic sensor arranged to detect the magnetic field of a first magnet and a second magnetic sensor arranged to detect the magnetic field of a second magnet.
  • the electronic measurement circuit 16 could comprise only one magnetic sensor arranged to measure the magnetic field of both the first magnet and the second magnet.
  • the monitoring device 15 preferably comprises a single magnet and a single magnetic sensor.
  • the implementation of the monitoring device 15 of the detection system 1 as described above is not limiting.
  • the monitoring device 15 could for example comprise a first eddy current sensor arranged to measure the deformation of the first return member 8 and a second eddy current sensor arranged to measure the deformation of the second return member 9.
  • the deformation of each of the return members 8, 9 is respectively representative of the position of the feelers 3, 4.
  • the first eddy current sensor and the second eddy current sensor could for example be advantageously mounted on the PCB 21 (and connected to means processing 16a of the electronic measurement circuit 16) so that said first eddy current sensor is positioned in the vicinity of the first return member 8 and that said second eddy current sensor is positioned in the vicinity of the second return member 9
  • the use of an eddy current sensor in particular does not require positioning a magnet on each of the return members of the detection system.
  • the monitoring device 15 could also comprise a first strain gauge and a second strain gauge respectively positioned on the first return member 8 and on the second return member 9.
  • the deformation of each of the return members 8, 9 is respectively representative of the position of feelers 3, 4.
  • the detection circuit may be different from that described.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
EP22213548.5A 2021-12-21 2022-12-14 Überwachungseinrichtung für eisenbahn-verkehrserfassungssysteme Pending EP4201785A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2114187A FR3130734A1 (fr) 2021-12-21 2021-12-21 Dispositif de surveillance des systèmes de détection du trafic ferroviaire

Publications (1)

Publication Number Publication Date
EP4201785A1 true EP4201785A1 (de) 2023-06-28

Family

ID=80735960

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22213548.5A Pending EP4201785A1 (de) 2021-12-21 2022-12-14 Überwachungseinrichtung für eisenbahn-verkehrserfassungssysteme

Country Status (2)

Country Link
EP (1) EP4201785A1 (de)
FR (1) FR3130734A1 (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2473449A1 (fr) * 1980-01-09 1981-07-17 Saxby Pedale a effet magnetique pour detecter le passage des roues de wagons sur une voie de chemin de fer
FR3096642A1 (fr) * 2019-05-29 2020-12-04 Laurent HILLION Détecteur ferroviaire à dispositif hydraulique de temporisation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2473449A1 (fr) * 1980-01-09 1981-07-17 Saxby Pedale a effet magnetique pour detecter le passage des roues de wagons sur une voie de chemin de fer
FR3096642A1 (fr) * 2019-05-29 2020-12-04 Laurent HILLION Détecteur ferroviaire à dispositif hydraulique de temporisation

Also Published As

Publication number Publication date
FR3130734A1 (fr) 2023-06-23

Similar Documents

Publication Publication Date Title
CA3005505C (fr) Train d'atterrissage muni d'un dispositif embarque de mesure de charge pour un aeronef, et aeronef
EP2860743B1 (de) Schaltvorrichtung und Verfahren zum Erkennen eines Fehlers einer solchen Schaltvorrichtung
FR2924518A1 (fr) Dispositif de localisation de la position droite et gauche d'un ensemble pneumatique et roue d'un vehicule
CA2426358A1 (fr) Systeme de mesure de pression et de commande de gonflage/degonflage pour pneumatique
FR2942312A1 (fr) Systeme et procede de mesure d'usure des freins
EP2406116B1 (de) Verfahren und vorrichtung zur überwachung des vorhandenseins einer schiene
FR2876455A1 (fr) Procede et dispositif de traitement des signaux de mesures issus d'un capteur de deplacement embarque sur un vehicule automobile
FR2885660A1 (fr) Frein de vehicule equipe d'une installation de blocage
EP4201785A1 (de) Überwachungseinrichtung für eisenbahn-verkehrserfassungssysteme
EP4072871B1 (de) Feststellung der abgefahrenen distanz eines betriebenen reifen
EP2894070B1 (de) Überwachungsverfahren eines Blockierorgans, und elektromechanisches Stellglied
WO2017013309A1 (fr) Dispositif palpeur pour le controle geometrique de pieces
FR2626363A1 (fr) Dispositif pour detecter au moins une variable relative au deplacement d'un mobile
FR2943651A1 (fr) Dispositif de manutention de charge comprenant un capteur d'intention sans contact et des moyens de traitement de donnees numeriques
WO2014013160A1 (fr) Dispositif de mesure d'un couple transmis par un arbre de transmission de puissance avec prise en compte des variations de température
EP4335719A1 (de) Vorrichtung zur erkennung von eisenbahnverkehr
WO2021115764A1 (fr) Consolidation d'une information de géolocalisation d'un véhicule
EP2722570A1 (de) Vorrichtung zur Positionserfassung eines Ventilschiebers
EP3760475B1 (de) Vorrichtung und verfahren zur bestimmung einer mechanischen spannung eines kontaktdrahts einer oberleitung
EP2734427B1 (de) Bremshilfevorrichtung für ein kraftfahrzeug
EP3594976B1 (de) Verfahren zur erkennung eines unzureichenden kontaktdrucks in einem stromunterbrechungsgerät, vorrichtung zur umsetzung dieses verfahrens und diese vorrichtung umfassendes stromunterbrechungsgerät
CH716887A2 (fr) Dispositif et procédé de mesure d'ébats d'horlogerie.
EP0945703B1 (de) Partieller Hubsensor
FR2919365A1 (fr) Dispositif de mesure de la position d'une butee d'embrayage et embrayage comprenant un tel dispositif.
EP3832400A1 (de) Vorrichtung und verfahren zur messung des spiels eines uhrwerks

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20231226

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR