EP2468602A1 - Capteur de roue - Google Patents

Capteur de roue Download PDF

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Publication number
EP2468602A1
EP2468602A1 EP10196265A EP10196265A EP2468602A1 EP 2468602 A1 EP2468602 A1 EP 2468602A1 EP 10196265 A EP10196265 A EP 10196265A EP 10196265 A EP10196265 A EP 10196265A EP 2468602 A1 EP2468602 A1 EP 2468602A1
Authority
EP
European Patent Office
Prior art keywords
wheel
capacitor
sensor arrangement
metal plate
rail
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Withdrawn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
EP10196265A
Other languages
German (de)
English (en)
Inventor
Rolf Schmid
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.)
Siemens Schweiz AG
Original Assignee
Siemens Schweiz AG
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 Siemens Schweiz AG filed Critical Siemens Schweiz AG
Priority to EP10196265A priority Critical patent/EP2468602A1/fr
Priority to PCT/EP2011/072317 priority patent/WO2012084552A1/fr
Publication of EP2468602A1 publication Critical patent/EP2468602A1/fr
Withdrawn legal-status Critical Current

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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
    • B61L1/16—Devices for counting axles; Devices for counting vehicles
    • B61L1/163—Detection devices
    • B61L1/165—Electrical

Definitions

  • the present invention relates to a wheel sensor arrangement on a railway rail according to the preamble of patent claim 1 and claim 2, respectively.
  • Wheel sensor devices are widely used in railway safety technology for the detection of wheels. These sensor devices are usually based on an inductive operating principle. In the early days of railway safety technology, axle counters were used, which are based on a mechanical operating principle.
  • WO 2010/086200 A1 discloses a wheel sensor having, beneath its housing surface, an AC powered sensor coil that is sensitive to inductive interaction of railcar rolling wheels. To increase the insensitivity to interference, this wheel sensor between the sensor coil and the housing surface on a capacitive shielding.
  • a passing or passing wheel arises in the receiving system of an inductive sensor due to an inductive influence by the wheel flange of a wheel, a receiving voltage in the form of a trained as a bell curve rolling curve.
  • a wheel is generally considered to be detected when it exceeds or falls below a fixed switching threshold.
  • an evaluation circuit of the wheel sensor may also be separate from the inductive one Sensor device may be arranged, for example, in a usually a few meters away track junction box. Irrespective of this, the effective range of inductive sensor devices used in conjunction with wheel or axle counting sensors is limited to the running-off range of wheels running over.
  • the inductive wheel sensors have the disadvantage that their operation on the rail - relatively speaking - a high energy demand is required.
  • the present invention is therefore based on the object of specifying a wheel sensor arrangement on a rail, which manages with as little energy as possible and whose cabling effort is minimized.
  • wheel sensor arrangement on a railroad track is also briefly mentioned by “wheel sensor”.
  • This capacitive mode of operation has made it possible to achieve an energy-optimized, if not to say, almost energy-free wheel detection, which can be used as a replacement for a rail contact or an inductive wheel sensor. Energy optimization is needed to reduce or eliminate cabling overhead. Thus, thereby a radio connection of such a wheel sensor is possible.
  • a capacitive mode of operation with a DC voltage is immune to inductive interference as well as high frequency electromagnetic fields.
  • the capacitive mode of operation has the further advantage that also non-ferromagnetic railway wheels can also be detected.
  • Inductive wheel sensors require a ferromagnetic composition of the railway wheels to be detected.
  • FIG. 1 Functional representation of a sensor arrangement on a rail for generating a presence criterion of a meetrollenden wheel
  • FIG. 2 Schematic diagram of a sensor arrangement on a rail for generating a presence criterion of a presentrollenden wheel
  • FIG. 3 Voltage profile during the Vorbeirollen a wheel on the sensor assembly
  • FIG. 4 Sectional view of the structural design on the rail
  • FIG. 5 Sectional view of the structural design on the rail with constructively-related tasks.
  • FIG. 1 shows a functional representation of a sensor arrangement 20 on a rail 1 for generating a presence criterion of a mecanicrollenden wheel with two capacitors C1 and C2.
  • the plates 10 and the dielectric 11 to the capacitor C2 are functional and not constructive to understand.
  • the capacitor C1 is formed by the rail 1, a designated by flange surface 6 and wheel flange 5 dielectric and a plate on the rail, this is the explanations below to the FIG. 2 . 4 and 5 refer to.
  • Wheel flange surface 6 and wheel flange 5 form the so-called wheel flange (without reference numerals in the FIG).
  • ⁇ also called the dielectric constant ⁇
  • a time ⁇ t is assumed. This time ⁇ t is, of course, dependent on the speed v of a train passing over it.
  • the two capacitors C1, C2 can be charged periodically in this cycle.
  • the two capacitors C1, C2 can also be charged with an AC voltage.
  • a higher power requirement is required for the operation of such a capacitive wheel sensor 20.
  • the capacitor C1 consists of two metallic plates 13 and 12 and air or flange 4, 6 of a mecanicrollenden wheel as a dielectric 11.
  • the upper plate 13 of C1 is formed by the rail 1.
  • the capacitor plate 12 of the second capacitor C2 is formed as a "further plate" 12 of the capacitor C1 with its two capacitor plates 10. All of these three plates 10 and 12 are each separated by a dielectric 11. This plate 12 is provided for reasons of safety as well as for reasons of safe operation with an insulating layer.
  • This capacitor arrangement C1, C2 typically has a length of 0.1m to about 5m. The 5m correspond approximately to the rolling length of a railway wheel 2, which is calculated from the diameter of the wheel 2 multiplied by the constant ⁇ ⁇ 3.14.
  • FIG. 5 Flange shown with wheel flange tip 5 and flange edge 6 is shown purely by way of example.
  • the flange edge 6 does not need to be flat, but may also be curved.
  • such a plate 12 as well as the plates 10 of the capacitor C2 may be formed with profiled rails which are attached to the lower edge of the railroad rail 1. These profiled rails are - as stated above - provided with an insulating layer (not shown in the FIG).
  • Such a capacitive wheel sensor 20 also allows the uncovering of a flat rotor, since when rolling around the flat area, the capacitance of the capacitor C1 changes as a result and in a different voltage curve U2 (t) manifested over the period ⁇ t.
  • Flat runners are wheels with a flat on the tread 5 due to a blocking braking.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
EP10196265A 2010-12-21 2010-12-21 Capteur de roue Withdrawn EP2468602A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10196265A EP2468602A1 (fr) 2010-12-21 2010-12-21 Capteur de roue
PCT/EP2011/072317 WO2012084552A1 (fr) 2010-12-21 2011-12-09 Détecteur de roue

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10196265A EP2468602A1 (fr) 2010-12-21 2010-12-21 Capteur de roue

Publications (1)

Publication Number Publication Date
EP2468602A1 true EP2468602A1 (fr) 2012-06-27

Family

ID=43911606

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10196265A Withdrawn EP2468602A1 (fr) 2010-12-21 2010-12-21 Capteur de roue

Country Status (2)

Country Link
EP (1) EP2468602A1 (fr)
WO (1) WO2012084552A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111532309A (zh) * 2020-05-06 2020-08-14 北京恒通安泰科技有限公司 车轮传感器、列车检测系统、列车行驶的轨道

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1806093A (en) * 1930-06-07 1931-05-19 Union Switch & Signal Co Apparatus responsive to the passage of railway vehicles
US2442491A (en) * 1945-03-05 1948-06-01 Marion W Gieskieng Railway wheel checking device
FR1212232A (fr) * 1958-09-22 1960-03-22 Acec Dispositif de signalisation ferroviaire
CH357086A (de) * 1957-03-19 1961-09-30 Werk Signal Sicherungstech Veb Steuerungseinrichtung in Einrichtungen von Eisenbahnsicherungsanlagen für die Zugschlussmeldung oder Achszählung mit magnetischer, induktiver oder kapazitiver Impulsgabe
US3086109A (en) * 1960-01-18 1963-04-16 Charles G Kaehms Train wheel proximity detector
FR1364337A (fr) * 1963-07-18 1964-06-19 Galileo Soc Per Az Off Dispositif électronique pour discerner la direction du mouvement de véhicules ferroviaires
EP0340660A2 (fr) 1988-05-03 1989-11-08 ING. JOSEF FRAUSCHER Hydraulik und Sensortechnik Dispositif sur voies ferrées pour engendrer des critères de présence pour roues roulant sur rails
WO2010086200A1 (fr) 2009-01-29 2010-08-05 Siemens Aktiengesellschaft Capteur de roue

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1806093A (en) * 1930-06-07 1931-05-19 Union Switch & Signal Co Apparatus responsive to the passage of railway vehicles
US2442491A (en) * 1945-03-05 1948-06-01 Marion W Gieskieng Railway wheel checking device
CH357086A (de) * 1957-03-19 1961-09-30 Werk Signal Sicherungstech Veb Steuerungseinrichtung in Einrichtungen von Eisenbahnsicherungsanlagen für die Zugschlussmeldung oder Achszählung mit magnetischer, induktiver oder kapazitiver Impulsgabe
FR1212232A (fr) * 1958-09-22 1960-03-22 Acec Dispositif de signalisation ferroviaire
US3086109A (en) * 1960-01-18 1963-04-16 Charles G Kaehms Train wheel proximity detector
FR1364337A (fr) * 1963-07-18 1964-06-19 Galileo Soc Per Az Off Dispositif électronique pour discerner la direction du mouvement de véhicules ferroviaires
EP0340660A2 (fr) 1988-05-03 1989-11-08 ING. JOSEF FRAUSCHER Hydraulik und Sensortechnik Dispositif sur voies ferrées pour engendrer des critères de présence pour roues roulant sur rails
WO2010086200A1 (fr) 2009-01-29 2010-08-05 Siemens Aktiengesellschaft Capteur de roue

Also Published As

Publication number Publication date
WO2012084552A1 (fr) 2012-06-28

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