EP1538058A1 - Méthode et système de compensation de voltage dans une bobine émettrice d'une contact placé sur la voie - Google Patents

Méthode et système de compensation de voltage dans une bobine émettrice d'une contact placé sur la voie Download PDF

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Publication number
EP1538058A1
EP1538058A1 EP03360134A EP03360134A EP1538058A1 EP 1538058 A1 EP1538058 A1 EP 1538058A1 EP 03360134 A EP03360134 A EP 03360134A EP 03360134 A EP03360134 A EP 03360134A EP 1538058 A1 EP1538058 A1 EP 1538058A1
Authority
EP
European Patent Office
Prior art keywords
temperature
rail contact
transmitting coil
supply voltage
calibration curve
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Withdrawn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
EP03360134A
Other languages
German (de)
English (en)
Inventor
Bernd Klose
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.)
Alcatel CIT SA
Alcatel Lucent SAS
Original Assignee
Alcatel CIT SA
Alcatel SA
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 Alcatel CIT SA, Alcatel SA filed Critical Alcatel CIT SA
Priority to EP03360134A priority Critical patent/EP1538058A1/fr
Publication of EP1538058A1 publication Critical patent/EP1538058A1/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Withdrawn legal-status Critical Current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
    • B61L1/20—Safety arrangements for preventing or indicating malfunction of the device, e.g. by leakage current, by lightning
    • 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
    • B61L1/167—Circuit details

Definitions

  • the invention relates to a method for balancing Transmission power fluctuations of a transmitting coil of a rail contact and a rail contact system for performing the method.
  • the procedure is particularly suitable for use in axle counting points (axle counter) of Treadles.
  • Each axle counter contains metering points with two rail contacts and one or more evaluation units.
  • Each axle counter monitors a track section assigned to it. detected the axle counter is a passing rail vehicle, the track section switched busy. Detects in the direction of travel of the rail vehicle nearest axle counter the passing rail vehicle, the Track section released again.
  • Electronic rail contacts often consist of two at one Mounted on the rail, spatially consecutive transmission coils, which are fed with audio frequency alternating currents and two on the each opposite rail side arranged with the Transmit coils inductively coupled receiver coils.
  • One send and one each Receiver coil together form a pulse generator.
  • the in the Receive coil induced voltages will be near the Rail contact arranged evaluation unit supplied and evaluated there.
  • the falling off and the phase rotation of the receiving voltages is due to the Coupling between the transmitting and receiving coils when passing a Vehicle wheel.
  • the induced voltages in the receiver coils are in implemented digital signals from which finally direction-dependent Counts are derived.
  • EP 02360127.1 is a Wheel sensor device, i. a rail contact on track systems, with means disclosed for protection against electromagnetic interference.
  • EP 401136 A describes a resonant circuit whose temperature dependent output signal by a controlled variation of the resistivity of the material of the Oszillalorspule is compensated. Such a resistance variation requires considerable equipment Expenditure. It is therefore error-prone and in particular for safety related applications, e.g. in train operation, not suitable.
  • the object of the invention is a method for balancing Transmission power fluctuations of a transmitting coil of a rail contact and to provide a rail contact system for carrying out the method, avoid the disadvantages of the prior art, in particular the one ensure temperature-independent behavior of the rail contact.
  • This object is achieved with regard to the method for compensating transmission power fluctuations of a transmitting coil of a rail contact according to the invention by a method for compensating temperature-dependent fluctuations in the transmission power of a voltage supply circuit acted upon by a supply voltage supply coil of a rail contact, with the method step controlling the supply voltage of a resonant circuit of the transmitting coil such that the resonant circuit of the transmitting coil is traversed by a temperature-independent current.
  • the inventive method is based on the finding that the electric current flowing through the rail contact, ie its transmitting coil, should be independent of the temperature-dependent ohmic resistance of the transmitting coil to ensure a constant transmission power. This causes a constant, ie temperature-independent, receiving voltage in the receiving coil of the rail contact. As a result, a temperature-independent rail contact characteristic is achieved.
  • the amplification factor is particularly preferred from a calibration curve containing the Determines gain factor as a function of the temperature, specified.
  • a calibration curve containing the Determines gain factor as a function of the temperature specified.
  • the rail contact system according to the invention for carrying out the method according to the invention has at least one transmitting coil, at least one receiving coil and at least one Voltage supply circuit on.
  • control agents provided for setting one of Voltage supply circuit provided supply voltage at least one resonant circuit of the transmitting coil, wherein the control means are set to adjust the supply voltage such that the Oscillation circuit of the transmitting coil of a temperature-independent current is flowed through.
  • the rail contact system according to the invention implements the Advantages of the method according to the invention in a simple and cost-effective Wise.
  • control means comprise a temperature measuring sensor, arranged to measure a temperature of the rail contact, preferably the transmitter coil, and an amplifier, designed to amplify the Supply voltage with a gain factor depending on the measured temperature.
  • a temperature measuring sensor arranged to measure a temperature of the rail contact, preferably the transmitter coil, and an amplifier, designed to amplify the Supply voltage with a gain factor depending on the measured temperature.
  • This embodiment of the invention Rail contact system is characterized by the availability of proven standard components and can be considered an autonomous system be used.
  • control agents have one Calibration curve memory
  • the calibration curve memory having a calibration curve Includes amplification factors as a function of temperature and means, arranged to read out gain factors as a function of the measured temperature from the calibration curve memory and passing the amplification factors read out to the amplifier.
  • this embodiment of the rail contact system according to the invention in particular for an implementation in the form of a microcomputer of in the rail contact system is integrated and in its memory Software code sections are loaded, which control the Control supply voltage according to the inventive method.
  • the rail contact system according to the invention is preferably used as an axle counter used. This significantly increases safety in rail transport.
  • a rail contact system according to the invention is shown in highly schematic form in a block diagram.
  • the rail contacts 9 of the axle counters are powered by the electronics module (power supply circuit 4) of the metering point with energy.
  • Each rail contact 9 has a transmitting coil 1 and a receiving coil 2, which lie relative to the track rails 3 opposite.
  • the transmitting coil 1 of the rail contacts 9 and the generator 8 and the capacitor 5 are connected as a series resonant circuit (resonant circuit) with each other.
  • the generator 8 provides a rectangular AC voltage having the transmitter frequency. The quality of this resonant circuit is determined by the ohmic resistance, eg the copper resistance, of the transmitting coil 1.
  • This resistance is temperature-dependent, whereby the transmission power of the transmitting coil 1, is influenced.
  • the generator 8 for supplying the rail contact ie the transmitting coil 1
  • the generator 8 for supplying the rail contact ie the transmitting coil 1
  • the generator 8 for supplying the rail contact ie the transmitting coil 1
  • the transmitting coil must supply a constant current or an alternating current with a constant time-dependent amplitude characteristic.
  • the temperature-dependent changes in resistance of the transmitting coil 1 remain without effect on their transmission power.
  • the transmitting coil thereby flows a constant current, or an alternating current with a constant time-dependent amplitude curve, which causes a constant transmission power and thus a constant receiving voltage to the receiving coil 2.
  • a temperature drift of the rail contact is thereby excluded.
  • the rail contact system In order to provide such a constant current control means 10 for adjusting the supply voltage of the series resonant circuit, so the transmitting coil 1, are provided in the rail contact system according to the invention.
  • the control means are set up to adjust the supply voltage such that the resonant circuit with the transmitting coil 1 is traversed by a temperature-independent current.
  • the supply voltage is varied accordingly.
  • the rail contact system has a temperature sensor 6 on the transmitting coil 1.
  • the control means further comprise an amplifier 7, which amplifies the supply voltage supplied by the generator with a gain factor in dependence on a temperature measured by the temperature measuring sensor 6. Amplification is also understood to mean attenuation, which is then a gain with a negative amplification factor.
  • the control means 10 also have a calibration curve memory 11.
  • a calibration curve representing amplification factors as a function of the measured temperature is stored.
  • a constant voltage at the output of the rail contact ie the receiving coil, ensured.
  • the temperature of the rail contact is measured and passed to control means, ie a circuit between power supply and rail contact.
  • control means ie a circuit between power supply and rail contact.
  • the supply voltage of the transmitting coil is varied as a function of the temperature of the rail contact, preferably of the transmitting coil.
  • the control means comprise an amplifier and have a calibration curve stored.
  • control means control the voltage at which the rail contact, ie its transmitting coil, is supplied depending on the measured temperature and the calibration curve.
  • the calibration curve can be determined during experiments.
  • the calibration curve includes the temperature dependence of the resistance of the transmitting coil.
  • the invention is not limited to the above Embodiment. Rather, a number of variants is conceivable, which even with fundamentally different type of execution of the characteristics of Invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
EP03360134A 2003-12-01 2003-12-01 Méthode et système de compensation de voltage dans une bobine émettrice d'une contact placé sur la voie Withdrawn EP1538058A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03360134A EP1538058A1 (fr) 2003-12-01 2003-12-01 Méthode et système de compensation de voltage dans une bobine émettrice d'une contact placé sur la voie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03360134A EP1538058A1 (fr) 2003-12-01 2003-12-01 Méthode et système de compensation de voltage dans une bobine émettrice d'une contact placé sur la voie

Publications (1)

Publication Number Publication Date
EP1538058A1 true EP1538058A1 (fr) 2005-06-08

Family

ID=34443132

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03360134A Withdrawn EP1538058A1 (fr) 2003-12-01 2003-12-01 Méthode et système de compensation de voltage dans une bobine émettrice d'une contact placé sur la voie

Country Status (1)

Country Link
EP (1) EP1538058A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2923913A1 (fr) * 2007-11-21 2009-05-22 Lohr Ind Ensemble de detection d'une discontinuite electrique entre un contact electrique et un element electriquement conducteur monte dans le circuit de detection
CN106218669A (zh) * 2016-08-04 2016-12-14 深圳市英威腾交通技术有限公司 一种列车高压隔离接地开关电路
CN113264084A (zh) * 2021-05-27 2021-08-17 海宁德科隆电子有限公司 轨道计轴传感器
WO2023247171A1 (fr) * 2022-06-21 2023-12-28 Siemens Mobility GmbH Capteur, et système de voie ferrée comprenant un capteur

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1130194A (en) * 1965-10-12 1968-10-09 Cie Generale D Electronique In Device for detecting the presence in, or the passage through, a given place of metallic objects, more particularly vehicles
DE2929291B1 (de) * 1979-07-19 1980-12-04 Siemens Ag Schaltungsanordnung zum Erzeugen von Achszaehlimpulsen fuer Achszaehlanlagen
DE3302883A1 (de) * 1983-01-28 1984-08-02 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zum erzeugen von achszaehlimpulsen fuer achszaehlanlagen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1130194A (en) * 1965-10-12 1968-10-09 Cie Generale D Electronique In Device for detecting the presence in, or the passage through, a given place of metallic objects, more particularly vehicles
DE2929291B1 (de) * 1979-07-19 1980-12-04 Siemens Ag Schaltungsanordnung zum Erzeugen von Achszaehlimpulsen fuer Achszaehlanlagen
DE3302883A1 (de) * 1983-01-28 1984-08-02 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zum erzeugen von achszaehlimpulsen fuer achszaehlanlagen

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2923913A1 (fr) * 2007-11-21 2009-05-22 Lohr Ind Ensemble de detection d'une discontinuite electrique entre un contact electrique et un element electriquement conducteur monte dans le circuit de detection
WO2009098373A2 (fr) * 2007-11-21 2009-08-13 Lohr Industrie Ensemble de detection d'une discontinuite electrique entre un contact electrique et un element electriquement conducteur monte dans le circuit de detection
WO2009098373A3 (fr) * 2007-11-21 2009-10-15 Lohr Industrie Ensemble de detection d'une discontinuite electrique entre un contact electrique et un element electriquement conducteur
CN101910852A (zh) * 2007-11-21 2010-12-08 罗尔工业公司 检测在电触头和安装在检测电路中的导电元件之间的电中断的组件
US8405404B2 (en) 2007-11-21 2013-03-26 Lohr Industrie Assembly for detecting electric discontinuity between an electric contact and an electrically conducting member mounted in the detection circuit
RU2482505C2 (ru) * 2007-11-21 2013-05-20 Лор Индустри Устройство определения нарушения электрической непрерывности между электрическим контактом и электрическим проводником, установленным в контуре определения
CN106218669A (zh) * 2016-08-04 2016-12-14 深圳市英威腾交通技术有限公司 一种列车高压隔离接地开关电路
CN106218669B (zh) * 2016-08-04 2018-01-02 深圳市英威腾交通技术有限公司 一种列车高压隔离接地开关电路
CN113264084A (zh) * 2021-05-27 2021-08-17 海宁德科隆电子有限公司 轨道计轴传感器
WO2023247171A1 (fr) * 2022-06-21 2023-12-28 Siemens Mobility GmbH Capteur, et système de voie ferrée comprenant un capteur

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