EP3294608A1 - Sensor device for detecting a wheel moving along a rail - Google Patents

Sensor device for detecting a wheel moving along a rail

Info

Publication number
EP3294608A1
EP3294608A1 EP16726083.5A EP16726083A EP3294608A1 EP 3294608 A1 EP3294608 A1 EP 3294608A1 EP 16726083 A EP16726083 A EP 16726083A EP 3294608 A1 EP3294608 A1 EP 3294608A1
Authority
EP
European Patent Office
Prior art keywords
coils
sensor device
receiving
rail
running 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.)
Granted
Application number
EP16726083.5A
Other languages
German (de)
French (fr)
Other versions
EP3294608B1 (en
Inventor
Rainer Freise
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 Mobility GmbH
Original Assignee
Siemens 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 AG filed Critical Siemens AG
Priority to PL16726083T priority Critical patent/PL3294608T3/en
Publication of EP3294608A1 publication Critical patent/EP3294608A1/en
Application granted granted Critical
Publication of EP3294608B1 publication Critical patent/EP3294608B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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 invention relates to a sensor device for detecting a wheel moving along a running rail, the sensor device being arranged on one side of the running rail with two alternating voltage fed, with respect to a longitudinal direction of the running rail
  • Such a sensor device is known in the form of a two-channel sensor head for detecting a rail vehicle wheel from the Polish patent PL 199810 Bl.
  • the sensor head comprises a transmitting and a receiving head.
  • the transmission header comprises two transmit coils, which are arranged on one side of the running rail toward ⁇ behind the other in the longitudinal direction of the running rail and are fed with an AC voltage.
  • the receiving head arranged on the other side of the running rail comprises two receiving devices, each with two reception coils connected in series with each other in opposite directions relative to the longitudinal direction of the running rail.
  • the present invention is based on the object to provide a sensor device of the aforementioned type, which is particularly advantageous in terms of their operational characteristics.
  • a sensor device for detecting a wheel moving along a travel rail, the sensor device on one side of the rail with two with an AC voltage, based on a Longitudinal direction of the running rail arranged behind one another transmitter coils and interconnected on the other side of the running rail with two receiving means each having two opposite directions to each other in series, relative to the longitudinal direction of the running rail arranged one behind another receiver coil according to the invention achieved in that the Sensoreinrich ⁇ processing of on the one hand Rail at least one bezo ⁇ gen arranged on the longitudinal direction of the running rail between the transmitting coils further transmitting coil, that the Sen- spool and the at least one further transmitting coil with an AC voltage of the same frequency are fed and that of the at least one further transmitting coil generated magnetic ⁇ cal Flow is directed opposite to the magnetic fluxes generated by the transmitting coils.
  • the sensor device for detecting a moving along a rail wheel thus has on one side of the running rail two ⁇ with an alternating voltage-fed with respect to a longitudinal direction of the running rail arranged behind one another on transmission coils.
  • the formulation includes "sequentially arranged" basic ⁇ additionally also a partially overlapping arrangement of the transmit coils. This means that the phrase "arranged one after the other” essentially refers to the respective longitudinal coil axis or coil center.
  • the transmitting coils are arranged one behind the other in the longitudinal direction of the running rail such that they are spaced apart in a non-overlapping manner.
  • the direction Sensorein ⁇ two receiving devices each having two opposite directions to one another series-connected receiving coils.
  • the receiving coils are also arranged one behind the other with respect to the longitudinal direction of the running rail, with a partially overlapping arrangement also being possible in principle according to the above remark in connection with the transmitting coils.
  • the sensor device according to the invention is now distinguished because ⁇ by the fact that they i.e. on the side on which the two transmitting coils are arranged, at least one relative arranged to the longitudinal direction of the rail between the transmitter coils further transmitter coil has on the one side of the running rail, ,
  • the phase difference is 180 °, that is arranged between the transmitting coils wei ⁇ tere transmitter coil has an opposite compared to the two transmitting coils ⁇ magnetic polarity.
  • the further transmission ⁇ reel is acted upon with a shifted compared to the transmit coils by 180 ° in the phase AC voltage.
  • the further transmitting coil differs in terms of its sense of winding from the transmitting coils, which also occurs when exposed to an alternating voltage of the same phase position
  • the sensor ⁇ device for example, from symmetry or potential ⁇ separation set, two or more separate, disposed between the transmitting coils more transmitting coils same phase position may have.
  • the sensor device according to the invention is advantageous since the further transmitting coil leads to an increase in the signal overlap of the two receiving devices. This is advantageous especially with small signal levels occurring and increases the reliability of a direction of travel detection based on the signals detected by the two receiving devices. Due to the fact that the receiving devices in each case have two receiving coils connected in series with one another in series, disturbing influences induced externally are largely suppressed. The reason for this is that corresponding disturbing influences generally affect both receiving coils of a receiving device equally. This applies, for example, with regard to rail currents which, as a rule, have a high degree of symmetry with respect to their coupling into the receiver coils. In addition, the corresponding compensation also applies to magnetic far fields. These may be caused, for example, by adjacent sensor devices whose transmitter magnetic field could otherwise lead to resonant beats in the receiver coils.
  • the fact that the magnetic flux generated by the at least one further transmitting coil is directed counter to the magnetic fluxes generated by the transmitting coils, in addition to the opposing interconnection of the receiving coils of the receiving devices also advantageously has the effect that in each case both receiving coils of the receiving ⁇ devices contribute to the detection of a useful or detection signal. This leads to an increase in the reception voltages of the receiving devices and thus ultimately to an increase in the sensor sensitivity.
  • the coils of the erfindungsge ⁇ MAESSEN sensor device can each be constructed from a plurality of series-connected sub-coils.
  • the transmitting coils, the at least one further transmitting coil and the receiving coils of the sensor device according to the invention can be arranged in different manners. This applies both in respect to the distance of each ⁇ tries coils from each other and from the running rail as well as with respect to the alignment of the respective coils.
  • the transmitting coils which are at least a further transmitting coil and the receiving coils oriented substantially ⁇ oriented horizontally, perpendicularly to the running rail, so that the coil axes point in the direction of the running rail.
  • the transmitting coils, the at least one further transmitting coil and / or the receiving coils in each case also be tilted with respect to the horizontal and / or the ent ⁇ speaking vertical to the running rail.
  • the inventive sensor device can further be formed in the manner that the transmission coil, the least at ⁇ a further transmitting coil and the receiving coils are arranged such that in each case a receiving voltage of the same polarity resulting in movement past a wheel on the sensor device in the receiving coils of the respective receiving means ,
  • the polarity of the receiving voltages of their receiving coils is the same according to said preferred development of the receiving coil, so that at a summation of the received voltages for each of the receiving devices, a magnitude increase in amplitude compared to the received voltages of the individual receiving coils respective receiving device results.
  • the arrangement and orientation of the coils of the sensor device can be selected, for example, such that the "outer" receiving coils of the receiving devices seen in the longitudinal direction of the running rail are essentially arranged by a respective one on the other side of the running rail. nete transmission coil can be influenced.
  • the two in the longitudinal direction of the rail "inner” or “middle” receiving coils of the two receiving devices are advantageously arranged with respect to the other transmitting coil such that they are significantly influenced by the further transmitting coil or caused by this magnetic flux. Due to the fact that the magnetic flux of the white ⁇ send coil opposite to the magnetic fluxes of the transmitting coils, this would normally be induced in the two inner receiving coils each receive a receiving voltage whose sign is opposite to the receiving voltages of the respective outer receiving coil.
  • the sign of the receiving voltages of the central receiving coils rotates so that the receiving voltages of the receiving coils of a receiving device advantageously have the same polarity.
  • both receiving coils of the receiving devices each provide a contribution to the signal or receiving voltage of the respective receiving device.
  • the result is thus an increase in magnitude of the received voltage, which advantageously improves the sensor sensitivity.
  • the receiving coils are arranged at the same distance and in the same orientation to the running rail. This is advantageous since this results in particularly good suppression with respect to interference magnetic fields, for example caused by rail currents.
  • this has a transmitting coil and the at least one further transmitting coil spei ⁇ send generator. This is advantageous because this can be ⁇ provides a particularly simple and cost-effective manner ensures that the transmitting coil and which are fed with an alternating voltage of the same frequency at least one further transmission coil.
  • the sensor device can also be configured in such a way that the transmitting coils, which are at least one further transmitting coil and / or the receiving coils each formed as part of a resonant circuit circuit abandonedbil ⁇ det.
  • the transmitting coils which are at least one further transmitting coil and / or the receiving coils each formed as part of a resonant circuit circuit abandonedbil ⁇ det.
  • the inventive sensor device can also be further developed such that the transmission coil, which further coil and / or the receiving coils are formed free of ferromagnetic materials at least ⁇ .
  • the design of the respective coils free of ferromagnetic materials offers the advantage that this reduces or avoids inductive interference influences.
  • the transmitting coils and the at least one further transmission coil are arranged in a housing the Common ⁇ men. This results in the transmitter side a particularly simple mechanical design of the Sensorein ⁇ direction associated with advantages in the installation of the sensor device on or in the region of the rail.
  • the sensor device according to the invention can also be developed in such a way that the reception directions are arranged in a common housing.
  • the arrangement of the receiving devices in a common housing also brings advantages with regard to a particularly simple mechanical design of the sensor device and with respect to the assembly.
  • the invention further comprises a wheel sensor with a sensor device according to the invention or a sensor device according to one of the aforementioned preferred developments of the sensor device according to the invention and with an evaluation device connected to the receiver devices.
  • the evaluation device in the immediate vicinity of the receiving devices, that is in the
  • Track area or arranged in a comparatively short distance control box, or spatially offset from the sensor device in a central control device, such as in the form of a signal box, be arranged.
  • the evaluation device is designed based on signals from the receiving devices
  • the invention further comprises a device for controlling and / or monitoring the rail-bound traffic with at least one wheel sensor according to the invention or at least one wheel sensor according to the aforementioned preferred development of the wheel sensor according to the invention.
  • the device according to the invention is in this case designed such that it is a track-free reporting device.
  • wheel sensors are used, in particular, in connection with track-free signaling devices or axle-mounted systems. counting devices of such track-free signaling devices.
  • FIG. 1 shows in a first schematic sketch a sectional view of an embodiment of the inventions ⁇ to the invention sensor device
  • Figure 2 is a plan view of the embodiment of the invention shown SEN sensor means and Figure 3 in a third schematic diagram of a further in a second schematic sketch
  • FIG. 1 shows in a first schematic sketch a
  • Sectional view of an embodiment of the inventive ⁇ sensor device Visible here is a housing 10 of a transmitter for detecting a moving along a running rail 60 wheel 50 and the flange 51 serving sensor device.
  • a transmission coil 11 is arranged, the magnetic field or magnetic flux is indicated in Figure 1 and indicated by the reference ⁇ sign 21.
  • the sensor device comprising for detecting along the travel rail 60 moving wheel 50 a recipient ger with a housing 30 in which according to the Thomasdar ⁇ position of Figure 1 a receiving coil 32 is arranged.
  • the sensor device according to the described exemplary embodiment of the invention has further components which are not shown or not recognizable in the schematic sectional representation of FIG.
  • the sensor device comprises a transmitter and a receiver, which are arranged on different sides of the running rail 60.
  • the housing 10 of the transmitter deviating from the illustration of Figure 1 can of course also be arranged at the same height or lower than the housing 30 of the receiver of the sensor device.
  • the figures are only schematic representations. This means in particular that the representations are not measured ⁇ stick faithfully and other components which are known per se genome ⁇ men, for reasons of clarity weggelas- sen were.
  • FIG. 2 shows in a second schematic sketch a top view of the exemplary embodiment of the sensor device according to the invention.
  • the sensor device has two transmitting coils 11 and 12, which are arranged one behind the other in relation to the longitudinal direction of the running rail 60.
  • the sensor device comprises two receiving devices 31, 35, each having two oppositely connected, with respect to the longitudinal direction of the rail 60 successively arranged receiving coils 32 and 33 or 36 and 37 have.
  • the transmitting coils 11, 12 are supplied with an alternating voltage, resulting in magnetic flux or magnetic fields 21, 22, which are adapted to induce a voltage in the receiving coils 32, 33, 36, 37. Through a change tion of the receiving means 31, 35 registered in a passing movement of a wheel receiving voltages, it is possible to detect the wheel in question.
  • the sensor device on the transmitter side that is, on one side of the running rail 60, on which the transmitting coils 11, 12 are arranged, a relative to the longitudinal direction of the running rail 60 between the transmitting coils 11, 12 arranged further transmitting coil 13.
  • this Sen ⁇ be provided despulen example, seen both in the longitudinal direction of the rail 60 in this case between the transmitter coils
  • both the transmitting coils 11, 12 and the further transmitting coil 13 are designed as part of a resonant circuit. Furthermore, the transmitting coils 11, 12, the further transmitting coil 13 and the receiving coils 32, 33, 36, 37 are each constructed completely free of ferromagnetic materials.
  • FIG. 3 shows a third schematic diagram of a further plan view of the embodiment of the invention shown SEN sensor device.
  • the illustration corresponds to sen- On the receiver side, that is, on the part of the receiving devices 31 and 35, the electrical circuit is now indicated to the effect that the receiving coils 32 and 33 of the receiving device 31 are connected in series with each other in accordance with the marked winding sense and together with a Kon ⁇ capacitor 34 form a receiving resonant circuit.
  • the receiving device 35 is formed together with a capacitor 38 a resonant circuit receiving by the receiver coils 36 and 37th
  • the structure of the sensor device with the other, between the transmitting coils 11, 12 arranged transmitting coil 13 also leads to a relevant in particular for a direction of travel detection sufficient signal overlap between the receiving or signal voltages 41 and 42 of the receiving devices 31 and 35 in all operational situations results.
  • the reason for this is that, even with the center position of a wheel above the sensor device due to the further transmitting coil 13, a voltage is generated or induced at least in the receiver coils 33 and 36.
  • the sensor device according to the invention on the one hand special into ⁇ the advantage that will be suppressed from the outside induced Störein ⁇ rivers, since these both Emp ⁇ fang coils 32 and 33 or 36 and 37 of the respective receiving means 31 or 35 usually affect equally. This results in a high noise immunity results in particular for the preferred case that all the receiver coils 32, 33, 36 and 37 have the sliding surfaces ⁇ distance and the same orientation relative to the running rail 60, in particular with respect to track currents caused by magnetic fields.
  • both interference-field-compensating reception coils 32 and 33 or 36 and 37 of the reception devices 31 and 35 which can also be referred to as reception channels , contribute to the reception or useful signal. As a result, this leads to an increase in the received voltage and thus to an increased detection sensitivity of the sensor device.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

The invention relates to a sensor device for detecting a wheel moving along a rail (60). The sensor device is equipped with two transmission coils (11, 12) on one side of the rail (60), said transmission coils being supplied with an alternating voltage and being arranged one behind the other with respect to a longitudinal direction of the rail (60), and with two receiving devices (31, 35) on the other side of the rail (60), each receiving device comprising two receiving coils (32, 33; 36, 37) which are connected together in series in opposite directions and which are arranged one behind the other with respect to the longitudinal direction of the rail (60). According to the invention, the sensor device is designed such that the sensor device has at least one additional transmission coil (13) on one side of the rail (60), said transmission coil being arranged between the transmission coils (11, 12) with respect to the longitudinal direction of the rail (60); the transmission coils (11, 12) and the at least one additional transmission coil (13) are supplied with an alternating voltage of the same frequency; and the magnetic flux (23) generated by the at least one additional transmission coil (13) is oriented opposite the magnetic fluxes (21, 22) generated by the transmission coils (11, 12).

Description

Beschreibung description
Sensoreinrichtung zum Detektieren eines sich entlang einer Fahrschiene bewegenden Rades Sensor device for detecting a wheel moving along a running rail
Die Erfindung betrifft eine Sensoreinrichtung zum Detektieren eines sich entlang einer Fahrschiene bewegenden Rades, die Sensoreinrichtung auf der einen Seite der Fahrschiene mit zwei mit einer Wechselspannung gespeisten, bezogen auf eine Längsrichtung der Fahrschiene hintereinander angeordnetenThe invention relates to a sensor device for detecting a wheel moving along a running rail, the sensor device being arranged on one side of the running rail with two alternating voltage fed, with respect to a longitudinal direction of the running rail
Sendespulen sowie auf der anderen Seite der Fahrschiene mit zwei Empfangseinrichtungen mit jeweils zwei gegensinnig miteinander in Reihe verschalteten, bezogen auf die Längsrichtung der Fahrschiene hintereinander angeordneten Empfangsspu- len. Transmitter coils and on the other side of the running rail with two receiving devices each with two oppositely connected in series with each other, related to the longitudinal direction of the running rail successively arranged receiving coils.
Eine solche Sensoreinrichtung ist in Form eines zweikanaligen Sensorkopfes zum Detektieren eines Schienenfahrzeugrades aus der polnischen Patentschrift PL 199810 Bl bekannt. Hierbei umfasst der Sensorkopf einen Sende- und einen Empfangskopf. Der Sendekopf weist zwei Sendespulen auf, die auf der einen Seite der Fahrschiene in Längsrichtung der Fahrschiene hin¬ tereinander angeordnet sind und mit einer Wechselspannung gespeist werden. Der auf der anderen Seite der Fahrschiene an- geordnete Empfangskopf umfasst zwei Empfangseinrichtungen mit jeweils zwei gegensinnig miteinander in Reihe verschalteten, bezogen auf die Längsrichtung der Fahrschiene ebenfalls hintereinander angeordneten Empfangsspulen. Der vorliegenden Erfindung liegt die Aufgabe zu Grunde, eine Sensoreinrichtung der zuvor genannten Art anzugeben, die im Hinblick auf ihre betrieblichen Eigenschaften besonders vorteilhaft ist. Diese Aufgabe wird für eine Sensoreinrichtung zum Detektieren eines sich entlang einer Fahrschiene bewegenden Rades, die Sensoreinrichtung auf der einen Seite der Fahrschiene mit zwei mit einer Wechselspannung gespeisten, bezogen auf eine Längsrichtung der Fahrschiene hintereinander angeordneten Sendespulen sowie auf der anderen Seite der Fahrschiene mit zwei Empfangseinrichtungen mit jeweils zwei gegensinnig miteinander in Reihe verschalteten, bezogen auf die Längsrich- tung der Fahrschiene hintereinander angeordneten Empfangsspulen erfindungsgemäß dadurch gelöst, dass die Sensoreinrich¬ tung auf der einen Seite der Fahrschiene zumindest eine bezo¬ gen auf die Längsrichtung der Fahrschiene zwischen den Sendespulen angeordnete weitere Sendespule aufweist, dass die Sen- despulen und die zumindest eine weitere Sendespule mit einer Wechselspannung gleicher Frequenz gespeist sind und dass der von der zumindest einen weiteren Sendespule erzeugte magneti¬ sche Fluss den von den Sendespulen erzeugten magnetischen Flüssen entgegengerichtet ist. Such a sensor device is known in the form of a two-channel sensor head for detecting a rail vehicle wheel from the Polish patent PL 199810 Bl. In this case, the sensor head comprises a transmitting and a receiving head. The transmission header comprises two transmit coils, which are arranged on one side of the running rail toward ¬ behind the other in the longitudinal direction of the running rail and are fed with an AC voltage. The receiving head arranged on the other side of the running rail comprises two receiving devices, each with two reception coils connected in series with each other in opposite directions relative to the longitudinal direction of the running rail. The present invention is based on the object to provide a sensor device of the aforementioned type, which is particularly advantageous in terms of their operational characteristics. This object is achieved for a sensor device for detecting a wheel moving along a travel rail, the sensor device on one side of the rail with two with an AC voltage, based on a Longitudinal direction of the running rail arranged behind one another transmitter coils and interconnected on the other side of the running rail with two receiving means each having two opposite directions to each other in series, relative to the longitudinal direction of the running rail arranged one behind another receiver coil according to the invention achieved in that the Sensoreinrich ¬ processing of on the one hand Rail at least one bezo ¬ gen arranged on the longitudinal direction of the running rail between the transmitting coils further transmitting coil, that the Sen- spool and the at least one further transmitting coil with an AC voltage of the same frequency are fed and that of the at least one further transmitting coil generated magnetic ¬ cal Flow is directed opposite to the magnetic fluxes generated by the transmitting coils.
Die erfindungsgemäße Sensoreinrichtung zum Detektieren eines sich entlang einer Fahrschiene bewegenden Rades weist somit auf der einen Seite der Fahrschiene zwei mit einer Wechsel¬ spannung gespeiste, bezogen auf eine Längsrichtung der Fahr- schiene hintereinander angeordnete Sendespulen auf. Dabei schließt die Formulierung "hintereinander angeordnet" grund¬ sätzlich auch eine teilweise überlappende Anordnung der Sendespulen ein. Dies bedeutet, dass sich die Formulierung "hintereinander angeordnet" im Wesentlichen auf die jeweilige Längsspulenachse bzw. Spulenmitte bezieht. Vorzugsweise sind die Sendespulen jedoch derart in Längsrichtung der Fahrschiene hintereinander angeordnet, dass sie in nicht überlappender Weise voneinander beabstandet sind. Auf der anderen Seite der Fahrschiene weist die Sensorein¬ richtung zwei Empfangseinrichtungen mit jeweils zwei gegensinnig miteinander in Reihe verschalteten Empfangsspulen auf. Dabei sind auch die Empfangsspulen bezogen auf die Längsrichtung der Fahrschiene jeweils hintereinander angeordnet, wobei entsprechend der vorstehenden Anmerkung im Zusammenhang mit den Sendespulen grundsätzlich auch hier eine teilweise überlappende Anordnung möglich ist. Die erfindungsgemäße Sensoreinrichtung zeichnet sich nun da¬ durch aus, dass sie auf der einen Seite der Fahrschiene, das heißt auf der Seite, auf der auch die beiden Sendespulen angeordnet sind, zumindest eine bezogen auf die Längsrichtung der Fahrschiene zwischen den Sendespulen angeordnete weitere Sendespule aufweist. Dabei sind die Sendespulen und die zu¬ mindest eine weitere Sendespule mit einer Wechselspannung gleicher Frequenz gespeist, wobei jedoch der von der zumindest einen weiteren Sendespule erzeugte magnetische Fluss den von den Sendespulen erzeugten magnetischen Flüssen The sensor device according to the invention for detecting a moving along a rail wheel thus has on one side of the running rail two ¬ with an alternating voltage-fed with respect to a longitudinal direction of the running rail arranged behind one another on transmission coils. The formulation includes "sequentially arranged" basic ¬ additionally also a partially overlapping arrangement of the transmit coils. This means that the phrase "arranged one after the other" essentially refers to the respective longitudinal coil axis or coil center. Preferably, however, the transmitting coils are arranged one behind the other in the longitudinal direction of the running rail such that they are spaced apart in a non-overlapping manner. On the other side of the running rail, the direction Sensorein ¬ two receiving devices each having two opposite directions to one another series-connected receiving coils. In this case, the receiving coils are also arranged one behind the other with respect to the longitudinal direction of the running rail, with a partially overlapping arrangement also being possible in principle according to the above remark in connection with the transmitting coils. The sensor device according to the invention is now distinguished because ¬ by the fact that they i.e. on the side on which the two transmitting coils are arranged, at least one relative arranged to the longitudinal direction of the rail between the transmitter coils further transmitter coil has on the one side of the running rail, , Here, the transmitting coils and the at least ¬ fed a further transmitter coil connected to an alternating voltage of the same frequency, but the magnetic flux generated by the at least one further transmission coil generated by the transmitting coil magnetic fluxes
entgegengerichtet ist. Dies bedeutet, dass die weitere Sende¬ spule und die Sendespulen auf derselben Frequenz schwingen, aber hinsichtlich ihrer magnetischen Flüsse unterschiedliche Phasenlagen besitzen. Dabei beträgt der Phasenunterschied 180°, das heißt die zwischen den Sendespulen angeordnete wei¬ tere Sendespule weist eine im Vergleich zu den beiden Sende¬ spulen entgegengesetzte Magnetfeldpolarität auf. Dies kann einerseits dadurch erreicht werden, dass die weitere Sende¬ spule mit einer im Vergleich zu den Sendespulen um 180° in der Phase verschobenen Wechselspannung beaufschlagt wird. Andererseits ist es auch möglich, dass die weitere Sendespule sich hinsichtlich ihres Wicklungssinnes von den Sendespulen unterscheidet, wodurch sich bei Beaufschlagung mit einer Wechselspannung gleicher Phasenlage ebenfalls is opposite. This means that the further transmission ¬ coil and swing the transmitting coils on the same frequency, but different phase angles with respect to their magnetic fluxes. In this case, the phase difference is 180 °, that is arranged between the transmitting coils wei ¬ tere transmitter coil has an opposite compared to the two transmitting coils ¬ magnetic polarity. This can be achieved by on the one hand, that the further transmission ¬ reel is acted upon with a shifted compared to the transmit coils by 180 ° in the phase AC voltage. On the other hand, it is also possible that the further transmitting coil differs in terms of its sense of winding from the transmitting coils, which also occurs when exposed to an alternating voltage of the same phase position
entgegengerichtete magnetische Flüsse ergeben. result in opposite magnetic fluxes.
Es sei darauf hingewiesen, dass die erfindungsgemäße Sensor¬ einrichtung, beispielsweise aus Symmetrie- oder Potenzial¬ trennungsgründen, auch zwei oder mehr separate, zwischen den Sendespulen angeordnete weitere Sendespulen gleicher Phasenlage aufweisen kann. It should be noted that the sensor ¬ device according to the invention, for example, from symmetry or potential ¬ separation set, two or more separate, disposed between the transmitting coils more transmitting coils same phase position may have.
Die erfindungsgemäße Sensoreinrichtung ist vorteilhaft, da die weitere Sendespule zu einer Erhöhung der Signalüberlap- pung der beiden Empfangseinrichtungen führt. Dies ist gerade bei kleinen auftretenden Signalpegeln vorteilhaft und erhöht die Zuverlässigkeit einer Fahrtrichtungserkennung anhand der von den beiden Empfangseinrichtungen detektierten Signale. Aufgrund dessen, dass die Empfangseinrichtungen jeweils zwei gegensinnig miteinander in Reihe verschaltete Empfangsspulen aufweisen, werden darüber hinaus von außen induzierte Stör- einflüsse weitgehend unterdrückt. Ursache hierfür ist, dass entsprechende Störeinflüsse in der Regel beide Empfangsspulen einer Empfangseinrichtung gleichermaßen beeinflussen. Dies gilt beispielsweise in Bezug auf Schienenströme, die hin¬ sichtlich ihrer Einkopplung in die Empfangsspulen in der Re- gel eine hohe Symmetrie aufweisen. Darüber hinaus wirkt die entsprechende Kompensation auch in Bezug auf magnetische Fernfelder. Diese können beispielsweise durch benachbarte Sensoreinrichtungen verursacht sein, deren Sendermagnetfeld anderenfalls zu resonanten Schwebungen in den Empfangsspulen führen könnte. The sensor device according to the invention is advantageous since the further transmitting coil leads to an increase in the signal overlap of the two receiving devices. This is advantageous especially with small signal levels occurring and increases the reliability of a direction of travel detection based on the signals detected by the two receiving devices. Due to the fact that the receiving devices in each case have two receiving coils connected in series with one another in series, disturbing influences induced externally are largely suppressed. The reason for this is that corresponding disturbing influences generally affect both receiving coils of a receiving device equally. This applies, for example, with regard to rail currents which, as a rule, have a high degree of symmetry with respect to their coupling into the receiver coils. In addition, the corresponding compensation also applies to magnetic far fields. These may be caused, for example, by adjacent sensor devices whose transmitter magnetic field could otherwise lead to resonant beats in the receiver coils.
Dadurch, dass der von der zumindest einen weiteren Sendespule erzeugte magnetische Fluss den von den Sendespulen erzeugten magnetischen Flüssen entgegengerichtet ist, ergibt sich zu- sammen mit der gegensinnigen Verschaltung der Empfangsspulen der Empfangseinrichtungen darüber hinaus vorteilhafterweise der Effekt, dass jeweils beide Empfangsspulen der Empfangs¬ einrichtungen zur Erfassung eines Nutz- bzw. Detektionssig- nals beitragen. Dies führt zu einer Erhöhung der Empfangs- Spannungen der Empfangseinrichtungen und damit letztlich auch zu einer Erhöhung der Sensorempfindlichkeit. The fact that the magnetic flux generated by the at least one further transmitting coil is directed counter to the magnetic fluxes generated by the transmitting coils, in addition to the opposing interconnection of the receiving coils of the receiving devices also advantageously has the effect that in each case both receiving coils of the receiving ¬ devices contribute to the detection of a useful or detection signal. This leads to an increase in the reception voltages of the receiving devices and thus ultimately to an increase in the sensor sensitivity.
Es sei darauf hingewiesen, dass die Spulen der erfindungsge¬ mäßen Sensoreinrichtung jeweils auch aus mehreren in Reihe geschalteten Teilspulen aufgebaut sein können. It should be noted that the coils of the erfindungsge ¬ MAESSEN sensor device can each be constructed from a plurality of series-connected sub-coils.
Grundsätzlich können die Sendespulen, die zumindest eine weitere Sendespule und die Empfangsspulen der erfindungsgemäßen Sensoreinrichtung auf unterschiedliche Art und Weise angeord- net sein. Dies gilt sowohl in Bezug auf den Abstand der je¬ weiligen Spulen voneinander sowie von der Fahrschiene als auch in Bezug auf die Ausrichtung der jeweiligen Spulen. In principle, the transmitting coils, the at least one further transmitting coil and the receiving coils of the sensor device according to the invention can be arranged in different manners. This applies both in respect to the distance of each ¬ weiligen coils from each other and from the running rail as well as with respect to the alignment of the respective coils.
Hierbei ist es beispielsweise möglich, dass die Sendespulen, die zumindest eine weitere Sendespule und die Empfangsspulen im Wesentlichen horizontal, senkrecht zur Fahrschiene ausge¬ richtet sind, so dass die Spulenachsen in Richtung der Fahrschiene zeigen. Darüber hinaus können die Sendespulen, die zumindest eine weitere Sendespule und/oder die Empfangsspulen jeweils auch in Bezug auf die Horizontale und/oder die ent¬ sprechende Senkrechte zur Fahrschiene gekippt angeordnet sein. In Abhängigkeit von den jeweiligen Gegebenheiten und Anforderungen erfolgt die Anordnung und Ausrichtung der Spu- len hierbei jeweils derart, dass sich zwischen den Sendespu¬ len sowie der weiteren Sendespule auf der einen Seite und den Empfangsspulen auf der anderen Seite eine magnetische bzw. induktive Kopplung einstellt, durch deren Änderung bei Vorbeibewegung eines Rades dieses detektierbar ist. In this case, it is possible, for example, for the transmitting coils, which are at least a further transmitting coil and the receiving coils oriented substantially ¬ oriented horizontally, perpendicularly to the running rail, so that the coil axes point in the direction of the running rail. In addition, the transmitting coils, the at least one further transmitting coil and / or the receiving coils in each case also be tilted with respect to the horizontal and / or the ent ¬ speaking vertical to the running rail. Depending on the particular circumstances and requirements of the arrangement and orientation of the SPU len here in each case in such a way is made that between the Sendespu ¬ len and the further transmitter coil on one side and the receiving coils on the other side, a magnetic or inductive coupling is established , by the change in the passing movement of a wheel this is detectable.
Vorzugsweise kann die erfindungsgemäße Sensoreinrichtung in der Art weitergebildet sein, dass die Sendespulen, die zumin¬ dest eine weitere Sendespule und die Empfangsspulen derart angeordnet sind, dass sich bei Vorbeibewegung eines Rades an der Sensoreinrichtung in den Empfangsspulen der jeweiligen Empfangseinrichtung jeweils eine Empfangsspannung gleicher Polarität ergibt. Dies schließt ein, dass die Empfangsspan¬ nungen der Empfangsspulen der einen Empfangseinrichtung in ihrer Phase im Vergleich zu den Empfangsspannungen der Emp- fangsspulen der anderen Empfangseinrichtung um 180° verschoben sein können. Für jede einzelne der beiden Empfangseinrichtungen ist gemäß der genannten bevorzugten Weiterbildung der erfindungsgemäßen Sensoreinrichtung jedoch die Polarität der Empfangsspannungen ihrer Empfangsspulen gleich, so dass sich bei einer Summenbildung der Empfangsspannungen für jede der Empfangseinrichtungen eine betragsmäßige Erhöhung der Amplitude im Vergleich zu den Empfangsspannungen der einzelnen Empfangsspulen der jeweiligen Empfangseinrichtung ergibt. Hierzu kann die Anordnung und Ausrichtung der Spulen der Sen- soreinrichtung beispielsweise derart gewählt werden, dass die in Längsrichtung der Fahrschiene gesehenen „äußeren" Empfangsspulen der Empfangseinrichtungen im Wesentlichen durch eine jeweilige auf der anderen Seite der Fahrschiene angeord- nete Sendespule beeinflusst werden. Gleichzeitig werden die beiden in Längsrichtung der Fahrschiene „inneren" bzw. „mittleren" Empfangsspulen der beiden Empfangseinrichtungen vorteilhafterweise in Bezug auf die weitere Sendespule derart angeordnet, dass sie maßgeblich durch die weitere Sendespule bzw. den von dieser bewirkten magnetischen Fluss beeinflusst werden. Aufgrund dessen, dass der magnetische Fluss der wei¬ teren Sendespule den magnetischen Flüssen der Sendespulen entgegengesetzt ist, würde hierdurch normalerweise in den beiden inneren Empfangsspulen jeweils eine Empfangsspannung induziert werden, deren Vorzeichen den Empfangsspannungen der jeweiligen äußeren Empfangsspule entgegengerichtet ist. Durch eine entsprechende gegensinnige Verschaltung der Empfangsspu¬ len der Empfangseinrichtungen dreht sich das Vorzeichen der Empfangsspannungen der mittleren Empfangsspulen jedoch um, so dass die Empfangsspannungen der Empfangsspulen einer Empfangseinrichtung vorteilhafterweise die gleiche Polarität aufweisen. Dies bedeutet, dass beide Empfangsspulen der Empfangseinrichtungen jeweils einen Beitrag zur Signal- bzw. Empfangsspannung der jeweiligen Empfangseinrichtung liefern. Im Ergebnis ergibt sich somit eine betragsmäßige Erhöhung der Empfangsspannung, wodurch vorteilhafterweise die Sensorempfindlichkeit verbessert wird. Gemäß einer weiteren besonders bevorzugten Ausführungsform der erfindungsgemäßen Sensoreinrichtung sind die Empfangsspulen im gleichen Abstand und in gleicher Ausrichtung zur Fahrschiene angeordnet. Dies ist vorteilhaft, da sich hierdurch eine besonders gute Unterdrückung in Bezug auf Störmagnetfel- der, etwa verursacht durch Schienenströme, ergibt. Dadurch dass entsprechende Störmagnetfelder die gegensinnig miteinander in Reihe verschalteten Empfangsspulen der jeweiligen Empfangseinrichtung im Wesentlichen in der gleichen Art und Stärke beeinflussen, ergibt sich eine bestmögliche Kompensa- tion der in den beiden Empfangsspulen einer Empfangseinrichtung induzierten Spannungen. Gemäß einer weiteren besonders bevorzugten Weiterbildung der erfindungsgemäßen Sensoreinrichtung weist diese einen die Sendespulen und die zumindest eine weitere Sendespule spei¬ senden Generator auf. Dies ist vorteilhaft, da hierdurch auf besonders einfache und kostengünstige Art und Weise gewähr¬ leistet werden kann, dass die Sendespulen und die zumindest eine weitere Sendespule mit einer Wechselspannung gleicher Frequenz gespeist sind. Vorteilhafterweise kann die erfindungsgemäße Sensoreinrich¬ tung auch derart ausgestaltet sein, dass die Sendespulen, die zumindest eine weitere Sendespule und/oder die Empfangsspulen jeweils als Bestandteil einer Schwingkreisschaltung ausgebil¬ det sind. Dies ist im Hinblick auf eine Bereitstellung eines ausreichenden magnetischen Flusses insbesondere in Bezug auf die Sendespulen vorteilhaft. Im Ergebnis weist die Sensorein¬ richtung hierbei eine besonders ausgeprägte Sensitivität auf, wodurch letztendlich eine besonders zuverlässige Detektion von Rädern möglich wird. Preferably, the inventive sensor device can further be formed in the manner that the transmission coil, the least at ¬ a further transmitting coil and the receiving coils are arranged such that in each case a receiving voltage of the same polarity resulting in movement past a wheel on the sensor device in the receiving coils of the respective receiving means , This includes that the reception chip ¬ voltages of the receiving coils of a receiver may be shifted in phase compared to the reception voltages of the receiving coils of the other receiving device by 180 °. For each of the two receiving devices, however, the polarity of the receiving voltages of their receiving coils is the same according to said preferred development of the receiving coil, so that at a summation of the received voltages for each of the receiving devices, a magnitude increase in amplitude compared to the received voltages of the individual receiving coils respective receiving device results. For this purpose, the arrangement and orientation of the coils of the sensor device can be selected, for example, such that the "outer" receiving coils of the receiving devices seen in the longitudinal direction of the running rail are essentially arranged by a respective one on the other side of the running rail. nete transmission coil can be influenced. At the same time, the two in the longitudinal direction of the rail "inner" or "middle" receiving coils of the two receiving devices are advantageously arranged with respect to the other transmitting coil such that they are significantly influenced by the further transmitting coil or caused by this magnetic flux. Due to the fact that the magnetic flux of the white ¬ send coil opposite to the magnetic fluxes of the transmitting coils, this would normally be induced in the two inner receiving coils each receive a receiving voltage whose sign is opposite to the receiving voltages of the respective outer receiving coil. By a corresponding opposing interconnection of the Empfangsspu ¬ len of the receiving devices, however, the sign of the receiving voltages of the central receiving coils rotates so that the receiving voltages of the receiving coils of a receiving device advantageously have the same polarity. This means that both receiving coils of the receiving devices each provide a contribution to the signal or receiving voltage of the respective receiving device. The result is thus an increase in magnitude of the received voltage, which advantageously improves the sensor sensitivity. According to a further particularly preferred embodiment of the sensor device according to the invention, the receiving coils are arranged at the same distance and in the same orientation to the running rail. This is advantageous since this results in particularly good suppression with respect to interference magnetic fields, for example caused by rail currents. The fact that corresponding interference magnetic fields influence the receiving coils of the respective receiving device, which are connected in opposite directions to one another in substantially the same type and intensity, results in the best possible compensation of the voltages induced in the two receiving coils of a receiving device. According to a further particularly preferred development of the sensor device according to the invention, this has a transmitting coil and the at least one further transmitting coil spei ¬ send generator. This is advantageous because this can be ¬ provides a particularly simple and cost-effective manner ensures that the transmitting coil and which are fed with an alternating voltage of the same frequency at least one further transmission coil. Advantageously, the sensor device according to the invention can also be configured in such a way that the transmitting coils, which are at least one further transmitting coil and / or the receiving coils each formed as part of a resonant circuit circuit ausgebil ¬ det. This is advantageous in terms of providing sufficient magnetic flux especially with respect to the transmitting coils. As a result, the Sensorein ¬ direction in this case a particularly marked sensitivity, whereby ultimately a particularly reliable detection of wheels is possible.
Vorzugsweise kann die erfindungsgemäße Sensoreinrichtung auch derart weitergebildet sein, dass die Sendespulen, die zumin¬ dest eine weitere Sendespule und/oder die Empfangsspulen frei von ferromagnetischen Materialien ausgebildet sind. Die Aus- führung der jeweiligen Spulen frei von ferromagnetischen Materialien bietet den Vorteil, dass hierdurch induktive Stör¬ beeinflussungen reduziert beziehungsweise vermieden werden. Preferably, the inventive sensor device can also be further developed such that the transmission coil, which further coil and / or the receiving coils are formed free of ferromagnetic materials at least ¬. The design of the respective coils free of ferromagnetic materials offers the advantage that this reduces or avoids inductive interference influences.
Gemäß einer weiteren besonders bevorzugten Ausführungsform der erfindungsgemäßen Sensoreinrichtung sind die Sendespulen und die zumindest eine weitere Sendespule in einem gemeinsa¬ men Gehäuse angeordnet. Hierdurch ergibt sich senderseitig eine besonders einfache mechanische Ausführung der Sensorein¬ richtung verbunden mit Vorteilen bei der Montage der Sensor- einrichtung an bzw. im Bereich der Fahrschiene. According to another particularly preferred embodiment of the sensor device according to the invention, the transmitting coils and the at least one further transmission coil are arranged in a housing the Common ¬ men. This results in the transmitter side a particularly simple mechanical design of the Sensorein ¬ direction associated with advantages in the installation of the sensor device on or in the region of the rail.
Vorteilhafterweise kann die erfindungsgemäße Sensoreinrich¬ tung auch derart weitergebildet sein, dass die Empfangsein- richtungen in einem gemeinsamen Gehäuse angeordnet sind. Entsprechend den vorstehenden Ausführungen im Zusammenhang mit den Sendespulen sowie der zumindest einen weiteren Sendespule bringt auch die Anordnung der Empfangseinrichtungen in einem gemeinsamen Gehäuse Vorteile im Bezug auf eine besonders ein¬ fache mechanische Ausführung der Sensoreinrichtung sowie in Bezug auf die Montage mit sich. Advantageously, the sensor device according to the invention can also be developed in such a way that the reception directions are arranged in a common housing. In accordance with the above explanations in connection with the transmitting coils and the at least one further transmitting coil, the arrangement of the receiving devices in a common housing also brings advantages with regard to a particularly simple mechanical design of the sensor device and with respect to the assembly.
Die Erfindung umfasst des Weiteren einen Radsensor mit einer erfindungsgemäßen Sensoreinrichtung bzw. einer Sensoreinrichtung gemäß einer der zuvor genannten bevorzugten Weiterbildungen der erfindungsgemäßen Sensoreinrichtung sowie mit einer an die Empfangseinrichtungen angebundenen Auswerteeinrichtung. Dabei kann die Auswerteeinrichtung in unmittelbarer räumlicher Nähe zu den Empfangseinrichtungen, das heißt imThe invention further comprises a wheel sensor with a sensor device according to the invention or a sensor device according to one of the aforementioned preferred developments of the sensor device according to the invention and with an evaluation device connected to the receiver devices. In this case, the evaluation device in the immediate vicinity of the receiving devices, that is in the
Gleisbereich oder in einem in vergleichsweise kurzer Entfernung angeordneten Schaltkasten, oder auch räumlich abgesetzt von der Sensoreinrichtung in einer zentralen Steuereinrichtung, etwa in Form eines Stellwerks, angeordnet sein. Track area or arranged in a comparatively short distance control box, or spatially offset from the sensor device in a central control device, such as in the form of a signal box, be arranged.
Gemäß einer besonders bevorzugten Ausgestaltung des erfindungsgemäßen Radsensors ist die Auswerteeinrichtung ausgebildet, anhand von Signalen der Empfangseinrichtungen eine According to a particularly preferred embodiment of the wheel sensor according to the invention, the evaluation device is designed based on signals from the receiving devices
Fahrtrichtungserkennung vorzunehmen. Dies ist vorteilhaft, da Radsensoren häufig im Zusammenhang mit Gleisfreimeldeeinrichtungen in Form von Achszählern verwendet werden und hierbei in der Regel eine Fahrtrichtungserkennung erforderlich ist. Detecting the direction of travel. This is advantageous since wheel sensors are often used in connection with track-free signaling devices in the form of axle counters and in this case usually a direction of travel detection is required.
Die Erfindung umfasst des Weiteren eine Einrichtung zum Steu- ern und/oder Überwachen des schienengebundenen Verkehrs mit zumindest einem erfindungsgemäßen Radsensor oder zumindest einem Radsensor gemäß der zuvor genannten bevorzugten Weiterbildung des erfindungsgemäßen Radsensors. Vorzugsweise ist die erfindungsgemäße Einrichtung hierbei derart ausgestaltet, dass sie eine Gleisfreimeldeeinrichtung ist. Entsprechend den vorstehenden Erläuterungen finden Radsensoren insbesondere im Zusammenhang mit Gleisfreimeldeeinrichtungen bzw. mit Achs- zähleinrichtungen solcher Gleisfreimeldeeinrichtungen Verwendung . The invention further comprises a device for controlling and / or monitoring the rail-bound traffic with at least one wheel sensor according to the invention or at least one wheel sensor according to the aforementioned preferred development of the wheel sensor according to the invention. Preferably, the device according to the invention is in this case designed such that it is a track-free reporting device. In accordance with the above explanations, wheel sensors are used, in particular, in connection with track-free signaling devices or axle-mounted systems. counting devices of such track-free signaling devices.
Im Folgenden wird die Erfindung anhand von Ausführungsbei- spielen näher erläutert. Hierzu zeigt In the following the invention will be explained in more detail by means of exemplary embodiments. This shows
Figur 1 in einer ersten schematischen Skizze eine Schnittdarstellung eines Ausführungsbeispiels der erfin¬ dungsgemäßen Sensoreinrichtung, 1 shows in a first schematic sketch a sectional view of an embodiment of the inventions ¬ to the invention sensor device,
Figur 2 in einer zweiten schematischen Skizze eine Draufsicht des Ausführungsbeispiels der erfindungsgemä¬ ßen Sensoreinrichtung und Figur 3 in einer dritten schematischen Skizze eine weitere Figure 2 is a plan view of the embodiment of the invention shown SEN sensor means and Figure 3 in a third schematic diagram of a further in a second schematic sketch
Draufsicht des Ausführungsbeispiels der erfindungs¬ gemäßen Sensoreinrichtung. Top view of the embodiment of the inventive ¬ sensor device.
In den Figuren werden aus Gründen der Übersichtlichkeit für gleiche Komponenten jeweils gleiche Bezugszeichen verwendet. In the figures, the same reference numerals are used for the sake of clarity for the same components.
Figur 1 zeigt in einer ersten schematischen Skizze eine FIG. 1 shows in a first schematic sketch a
Schnittdarstellung eines Ausführungsbeispiels der erfindungs¬ gemäßen Sensoreinrichtung. Erkennbar ist hierbei ein Gehäuse 10 eines Senders der zum Detektieren eines sich entlang einer Fahrschiene 60 bewegenden Rades 50 bzw. dessen Spurkranzes 51 dienenden Sensoreinrichtung. In dem beispielhaft auf der Außenseite der Fahrschiene 60 angeordneten Gehäuse 10 des Sen¬ ders ist eine Sendespule 11 angeordnet, deren Magnetfeld bzw. magnetischer Fluss in Figur 1 angedeutet und mit den Bezugs¬ zeichen 21 gekennzeichnet ist. Auf der anderen Seite der Fahrschiene 60, das heißt vorliegend auf der Schieneninnen¬ seite, umfasst die Sensoreinrichtung zum Detektieren des sich entlang der Fahrschiene 60 bewegenden Rades 50 einen Empfän- ger mit einem Gehäuse 30, in dem entsprechend der Schnittdar¬ stellung der Figur 1 eine Empfangsspule 32 angeordnet ist. Wie im Folgenden im Zusammenhang mit den Figuren 2 und 3 näher erläutert werden wird, weist die Sensoreinrichtung gemäß dem beschriebenen Ausführungsbeispiel der Erfindung weitere Komponenten auf, die in der schematischen Schnittdarstellung der Figur 1 nicht dargestellt bzw. nicht erkennbar sind. Sectional view of an embodiment of the inventive ¬ sensor device. Visible here is a housing 10 of a transmitter for detecting a moving along a running rail 60 wheel 50 and the flange 51 serving sensor device. In the example arranged on the outside of the rail 60 housing 10 of Sen ¬ DERS a transmission coil 11 is arranged, the magnetic field or magnetic flux is indicated in Figure 1 and indicated by the reference ¬ sign 21. On the other side of the rail 60, that is present on the rail inner ¬ page, the sensor device comprising for detecting along the travel rail 60 moving wheel 50 a recipient ger with a housing 30 in which according to the Schnittdar ¬ position of Figure 1 a receiving coil 32 is arranged. As will be explained in more detail below in connection with FIGS. 2 and 3, the sensor device according to the described exemplary embodiment of the invention has further components which are not shown or not recognizable in the schematic sectional representation of FIG.
Deutlich wird durch die Darstellung der Figur 1 jedoch, dass die Sensoreinrichtung einen Sender sowie einen Empfänger aufweist, die auf unterschiedlichen Seiten der Fahrschiene 60 angeordnet sind. In diesem Zusammenhang sei angemerkt, dass das Gehäuse 10 des Senders abweichend von der Darstellung der Figur 1 selbstverständlich auch auf gleicher Höhe oder niedriger wie das Gehäuse 30 des Empfängers der Sensoreinrichtung angeordnet sein kann. Vorsorglich sei darauf hingewiesen, dass es sich bei den Figuren ausschließlich um schematische Darstellungen handelt. Dies bedeutet insbesondere, dass die Darstellungen nicht ma߬ stabsgetreu sind und weitere Komponenten, die für sich genom¬ men bekannt sind, aus Gründen der Übersichtlichkeit weggelas- sen wurden. Dies betrifft beispielsweise Halterungen, mit de¬ nen das Gehäuse 10 des Senders der Sensoreinrichtung sowie das Gehäuse 30 des Empfängers der Sensoreinrichtung an oder im Bereich der Fahrschiene 60 montiert bzw. befestigt sind. Figur 2 zeigt in einer zweiten schematischen Skizze eine Draufsicht des Ausführungsbeispiels der erfindungsgemäßen Sensoreinrichtung. Hierbei wird deutlich, dass die Sensoreinrichtung zwei Sendespulen 11 und 12 aufweist, die bezogen auf die Längsrichtung der Fahrschiene 60 hintereinander angeord- net sind. Auf der anderen Seite der Fahrschiene 60 umfasst die Sensoreinrichtung zwei Empfangseinrichtungen 31, 35, die jeweils zwei gegensinnig miteinander verschaltete, bezogen auf die Längsrichtung der Fahrschiene 60 hintereinander angeordnete Empfangsspulen 32 und 33 bzw. 36 und 37 aufweisen. Die Sendespulen 11, 12 sind mit einer Wechselspannung gespeist, wodurch sich magnetische Flüsse bzw. Magnetfelder 21, 22 ergeben, die dazu geeignet sind, eine Spannung in den Empfangsspulen 32, 33, 36, 37 zu induzieren. Durch eine Verände- rung der seitens der Empfangseinrichtungen 31, 35 bei einer Vorbeibewegung eines Rades registrierten Empfangsspannungen ist es hierbei möglich, das betreffende Rad zu detektieren. Neben den genannten Komponenten weist die Sensoreinrichtung senderseitig, das heißt auf der einen Seite der Fahrschiene 60, auf der auch die Sendespulen 11, 12 angeordnet sind, eine bezogen auf die Längsrichtung der Fahrschiene 60 zwischen den Sendespulen 11, 12 angeordnete weitere Sendespule 13 auf. Al- ternativ hierzu könnten beispielsweise auch zwei weitere Sen¬ despulen vorgesehen sein, die in diesem Fall beide in Längsrichtung der Fahrschiene 60 gesehen zwischen den SendespulenHowever, it is clear from the representation of Figure 1 that the sensor device comprises a transmitter and a receiver, which are arranged on different sides of the running rail 60. In this context, it should be noted that the housing 10 of the transmitter deviating from the illustration of Figure 1 can of course also be arranged at the same height or lower than the housing 30 of the receiver of the sensor device. As a precaution, it should be noted that the figures are only schematic representations. This means in particular that the representations are not measured ¬ stick faithfully and other components which are known per se genome ¬ men, for reasons of clarity weggelas- sen were. This concerns for example brackets, with de ¬ NEN the housing 10 of the transmitter of the sensor device and the housing 30 of the receiver of the sensor device in or are mounted in the area of the rail 60 and fixed. FIG. 2 shows in a second schematic sketch a top view of the exemplary embodiment of the sensor device according to the invention. In this case, it becomes clear that the sensor device has two transmitting coils 11 and 12, which are arranged one behind the other in relation to the longitudinal direction of the running rail 60. On the other side of the running rail 60, the sensor device comprises two receiving devices 31, 35, each having two oppositely connected, with respect to the longitudinal direction of the rail 60 successively arranged receiving coils 32 and 33 or 36 and 37 have. The transmitting coils 11, 12 are supplied with an alternating voltage, resulting in magnetic flux or magnetic fields 21, 22, which are adapted to induce a voltage in the receiving coils 32, 33, 36, 37. Through a change tion of the receiving means 31, 35 registered in a passing movement of a wheel receiving voltages, it is possible to detect the wheel in question. In addition to the components mentioned, the sensor device on the transmitter side, that is, on one side of the running rail 60, on which the transmitting coils 11, 12 are arranged, a relative to the longitudinal direction of the running rail 60 between the transmitting coils 11, 12 arranged further transmitting coil 13. As an alternative, two more could this Sen ¬ be provided despulen example, seen both in the longitudinal direction of the rail 60 in this case between the transmitter coils
11 und 12 angeordnet wären. Unabhängig davon, ob eine weitere Sendespule 13 vorgesehen ist oder mehrere entsprechende wei- tere Sendespulen, wird diese bzw. werden diese bezogen auf die Sendespulen 11, 12 mit einer Wechselspannung gleicher Frequenz gespeist. In der Darstellung der Figur 2 wird jedoch deutlich, dass der von der zumindest einen weiteren Sendespule 13 erzeugte magnetische Fluss 23 den von den Sendespulen 11, 12 erzeugten magnetischen Flüssen 21, 22 entgegengerichtet ist. Dies bedeutet, dass die zwischen den Sendespulen 11,11 and 12 would be arranged. Regardless of whether a further transmitting coil 13 is provided or a plurality of corresponding further transmitting coils, this or these are fed relative to the transmitting coils 11, 12 with an alternating voltage of the same frequency. In the representation of FIG. 2, however, it becomes clear that the magnetic flux 23 generated by the at least one further transmitting coil 13 is directed counter to the magnetic fluxes 21, 22 generated by the transmitting coils 11, 12. This means that the between the transmitting coils 11,
12 angeordnete weitere Sendespule 13 im Vergleich zu diesen beiden äußeren Sendespulen 11, 12 eine um 180° gedrehte Magnetfeldpolarität aufweist. Mit anderen Worten ist das magne- tische Wechselfeld der weiteren Spule 13 im Vergleich zu den magnetischen Wechselfeldern der Sendespulen 11, 12 in der Phase um 180° verschoben. 12 arranged further transmitting coil 13 in comparison to these two outer transmitting coils 11, 12 has a 180 ° rotated magnetic field polarity. In other words, the magnetic alternating field of the further coil 13 is shifted in phase by 180 ° in comparison to the alternating magnetic fields of the transmitting coils 11, 12.
Im Rahmen des beschriebenen Ausführungsbeispiels sei angenom- men, dass sowohl die Sendespulen 11, 12 als auch die weitere Sendespule 13 als Bestandteil eines Schwingkreises ausgeführt sind. Weiterhin seien die Sendespulen 11, 12, die weitere Sendespule 13 sowie die Empfangsspulen 32, 33, 36, 37 jeweils vollständig frei von ferromagnetischen Materialien aufgebaut. In the context of the exemplary embodiment described, it is assumed that both the transmitting coils 11, 12 and the further transmitting coil 13 are designed as part of a resonant circuit. Furthermore, the transmitting coils 11, 12, the further transmitting coil 13 and the receiving coils 32, 33, 36, 37 are each constructed completely free of ferromagnetic materials.
Figur 3 zeigt in einer dritten schematischen Skizze eine weitere Draufsicht des Ausführungsbeispiels der erfindungsgemä¬ ßen Sensoreinrichtung. Dabei entspricht die Darstellung sen- derseitig derjenigen der Figur 2. Empfängerseitig, das heißt seitens der Empfangseinrichtungen 31 und 35, ist nun jedoch die elektrische Schaltung dahingehend angedeutet, dass die Empfangsspulen 32 und 33 der Empfangseinrichtung 31 entspre- chend dem gekennzeichneten Wicklungssinn gegensinnig miteinander in Reihe verschaltet sind und gemeinsam mit einem Kon¬ densator 34 einen Empfangsschwingkreis bilden. In entspre¬ chender Weise wird auch durch die Empfangsspulen 36 und 37 der Empfangseinrichtung 35 gemeinsam mit einem Kondensator 38 ein Empfangsschwingkreis gebildet. Figure 3 shows a third schematic diagram of a further plan view of the embodiment of the invention shown SEN sensor device. The illustration corresponds to sen- On the receiver side, that is, on the part of the receiving devices 31 and 35, the electrical circuit is now indicated to the effect that the receiving coils 32 and 33 of the receiving device 31 are connected in series with each other in accordance with the marked winding sense and together with a Kon ¬ capacitor 34 form a receiving resonant circuit. In entspre ¬ chender, the receiving device 35 is formed together with a capacitor 38 a resonant circuit receiving by the receiver coils 36 and 37th
Weiterhin ist aus Figur 3 erkennbar, dass die Sendespulen 11, 12, die weitere Sendespule 13 sowie die Empfangsspulen 32, 33, 36, 37 derart angeordnet sind, dass die in Längsrichtung der Fahrschiene 60 „äußeren" Empfangsspulen 32, 37 der Empfangseinrichtungen 31, 35 überwiegend durch die Sendespule 11 bzw. die Sendespule 12 beeinflusst werden. Hingegen werden die in Längsrichtung der Fahrschiene 60 „inneren" Empfangsspulen 33 und 36 maßgeblich durch die weitere Sendespule 13 beeinflusst. Dies ist in Figur 3 in schematischer, skizzenhafter Form durch einen Verlauf der magnetischen bzw. induktiven Kopplung 40 zwischen Senderseite und Empfängerseite an¬ gedeutet . Durch die unterschiedliche Phasenlage der weiteren Sendespule 13 im Vergleich zu den Sendespulen 11 und 12 wird in den Empfangsspulen 32, 33 der Empfangseinrichtung 31 bzw. in den Empfangsspulen 36, 37 der Empfangseinrichtung 35 vorteilha- ferweise jeweils eine Spannung gleicher Polarität induziert. So führt der entgegengesetzte magnetische Fluss 23 der weite¬ ren Sendespule 13 verbunden mit der gegensinnigen Verschal- tung der Empfangsspulen 33, 36 mit den Empfangsspulen 32 bzw. 37 gerade dazu, dass die Empfangsspulen 32 und 33 bzw. 36 und 37 jeweils eine Empfangsspannung gleicher Polarität liefern und damit trotz störfeidkompensierender gegensinniger Ver- schaltung der Empfangsspulen 32 und 33 bzw. 36 und 37 zum Empfangs- bzw. Nutzsignal der jeweiligen Empfangseinrichtung 31 bzw. 35 beitragen. Die entsprechenden Empfangs- bzw. Sig- nalspannungen sind in Figur 3 durch die Bezugszeichen 41 bzw. 42 gekennzeichnet. Im Ergebnis resultiert somit aus dem Zu¬ sammenspiel zwischen den Sendespulen 11, 12, der weiteren Sendespule 13 und den Empfangsspulen 32, 33, 36, 37 eine Er- höhung der Empfangsspannungen 41, 42 und somit letztlich eine entsprechende Erhöhung der Empfindlichkeit der Sensoreinrich¬ tung . Furthermore, it can be seen from FIG. 3 that the transmitting coils 11, 12, the further transmitting coil 13 and the receiving coils 32, 33, 36, 37 are arranged in such a way that the "outer" receiving coils 32, 37 of the receiving devices 31, 35 are predominantly influenced by the transmitting coil 11 or the transmitting coil 12. On the other hand, the longitudinal direction of the running rail 60 "inner" receiving coils 33 and 36 are decisively influenced by the further transmitting coil 13. This is interpreted in Figure 3 in a schematic sketch-like shape by a profile of the magnetic or inductive coupling 40 between transmitter side and receiver side by ¬. Due to the different phase position of the further transmitting coil 13 in comparison with the transmitting coils 11 and 12, in each case a voltage of the same polarity is induced in the receiving coils 32, 33 of the receiving device 31 or in the receiving coils 36, 37 of the receiving device 35. Thus, the opposite magnetic flux 23 of the wider ¬ ren transmission coil 13 connected to the opposite direction interconnection of the receiving coils 33, 36 with the receiving coils 32 and 37 leads straight to the receiving coils 32 and 33 and 36 and 37 each have a receiving voltage of the same Polarity and thus despite Störfeidkompensierender gegensinniger connection of the receiving coils 32 and 33 or 36 and 37 to the receive or payload of the respective receiving device 31 and 35 contribute. The corresponding receive or send Nalspannungen are indicated in Figure 3 by the reference numerals 41 and 42 respectively. As a result, thus resulting from the To ¬ interplay between the transmitter coils 11, 12, the further transmitter coil 13 and the receiver coils 32, 33, 36, 37 to increase the received voltages 41, 42 and, ultimately, a corresponding increase in the sensitivity of the Sensoreinrich ¬ tion.
Der Aufbau der Sensoreinrichtung mit der weiteren, zwischen den Sendespulen 11, 12 angeordneten Sendespule 13 führt weiterhin dazu, dass sich in allen betrieblichen Situationen eine insbesondere für eine Fahrtrichtungserkennung relevante ausreichende Signalüberlappung zwischen den Empfangs- bzw. Signalspannungen 41 und 42 der Empfangseinrichtungen 31 und 35 ergibt. Ursache hierfür ist, dass auch bei Mittelstellung eines Rades über der Sensoreinrichtung aufgrund der weiteren Sendespule 13 zumindest in den Empfangsspulen 33 und 36 eine Spannung erzeugt bzw. induziert wird. Entsprechend dem vorstehend beschriebenen Ausführungsbeispiel weist die erfindungsgemäße Sensoreinrichtung einerseits ins¬ besondere den Vorteil auf, dass von außen induzierte Störein¬ flüsse weitgehend unterdrückt werden, da diese beide Emp¬ fangsspulen 32 und 33 bzw. 36 und 37 der jeweiligen Empfangs- einrichtung 31 bzw. 35 in der Regel gleichermaßen beeinflussen. Hierdurch ergibt sich insbesondere für den bevorzugten Fall, dass alle Empfängerspulen 32, 33, 36 und 37 den glei¬ chen Abstand und die gleiche Ausrichtung zur Fahrschiene 60 haben, eine hohe Störunempfindlichkeit insbesondere in Bezug auf durch Schienenströme verursachte Magnetfelder. The structure of the sensor device with the other, between the transmitting coils 11, 12 arranged transmitting coil 13 also leads to a relevant in particular for a direction of travel detection sufficient signal overlap between the receiving or signal voltages 41 and 42 of the receiving devices 31 and 35 in all operational situations results. The reason for this is that, even with the center position of a wheel above the sensor device due to the further transmitting coil 13, a voltage is generated or induced at least in the receiver coils 33 and 36. According to the embodiment described above, the sensor device according to the invention on the one hand special into ¬ the advantage that will be suppressed from the outside induced Störein ¬ rivers, since these both Emp ¬ fang coils 32 and 33 or 36 and 37 of the respective receiving means 31 or 35 usually affect equally. This results in a high noise immunity results in particular for the preferred case that all the receiver coils 32, 33, 36 and 37 have the sliding surfaces ¬ distance and the same orientation relative to the running rail 60, in particular with respect to track currents caused by magnetic fields.
Andererseits führt die Anordnung der zumindest einen weiteren Sendespule 13 zwischen den Sendespulen 11 und 12, wie bereits erläutert, vorteilhafterweise zu einer Erhöhung der Signal- Überlappung der Empfangseinrichtungen 31 und 35. Dies ist gerade bei kleinen Signalpegeln von Vorteil und unterstützt ei¬ ne zuverlässige Fahrtrichtungserkennung anhand der Signale der Empfangseinrichtungen 31 und 35. Entsprechend den vorstehenden Erläuterungen tragen darüber hinaus beide störfeidkompensierenden Empfangsspulen 32 und 33 bzw. 36 und 37 der Empfangseinrichtungen 31 und 35, die auch als Empfangskanäle bezeichnet werden können, zum Empfangs¬ bzw. Nutzsignal bei. Dies führt im Ergebnis zu einer Erhöhung der Empfangsspannung und damit zu einer gesteigerten Nachweisempfindlichkeit der Sensoreinrichtung. On the other hand the arrangement of at least one further transmission coil 13 between the transmitter coils 11 and 12, as already explained, advantageously in an increase in signal overlap of the receiving devices 31 and 35. This is just the case of small signal levels of advantage and supports ei ¬ ne reliable detection of driving direction based on the signals of the receiving devices 31 and 35. In accordance with the above explanations, moreover, both interference-field-compensating reception coils 32 and 33 or 36 and 37 of the reception devices 31 and 35, which can also be referred to as reception channels , contribute to the reception or useful signal. As a result, this leads to an increase in the received voltage and thus to an increased detection sensitivity of the sensor device.

Claims

Patentansprüche claims
1. Sensoreinrichtung zum Detektieren eines sich entlang einer Fahrschiene (60) bewegenden Rades, die Sensoreinrichtung - auf der einen Seite der Fahrschiene (60) mit zwei mit ei¬ ner Wechselspannung gespeisten, bezogen auf eine Längsrichtung der Fahrschiene (60) hintereinander angeordneten Sendespulen (11,12) sowie 1. Sensor device for detecting a along a running rail (60) moving wheel, the sensor device - fed on one side of the running rail (60) having two egg ¬ ner AC voltage, based on a longitudinal direction of the running rail (60) arranged behind one another transmitter coils ( 11,12) as well
- auf der anderen Seite der Fahrschiene (60) mit zwei Emp- fangseinrichtungen (31,35) mit jeweils zwei gegensinnig miteinander in Reihe verschalteten, bezogen auf die Längsrichtung der Fahrschiene (60) hintereinander angeordneten Empfangsspulen (32, 33; 36, 37) ,  - On the other side of the running rail (60) with two receiving devices (31,35) each with two oppositely connected in series, based on the longitudinal direction of the running rail (60) successively arranged receiving coils (32, 33, 36, 37) .
d a d u r c h g e k e n n z e i c h n e t , characterized ,
- dass die Sensoreinrichtung auf der einen Seite der Fahrschiene (60) zumindest eine bezogen auf die Längsrichtung der Fahrschiene (60) zwischen den Sendespulen (11,12) angeordnete weitere Sendespule (13) aufweist, - That the sensor device on one side of the running rail (60) at least one with respect to the longitudinal direction of the running rail (60) between the transmitting coils (11,12) arranged further transmitting coil (13),
- dass die Sendespulen (11,12) und die zumindest eine weite- re Sendespule (13) mit einer Wechselspannung gleicher Frequenz gespeist sind und  - That the transmitting coils (11,12) and the at least one further transmitting coil (13) are fed with an AC voltage of the same frequency and
- dass der von der zumindest einen weiteren Sendespule (13) erzeugte magnetische Fluss (23) den von den Sendespulen (11,12) erzeugten magnetischen Flüssen (21,22)  in that the magnetic flux (23) generated by the at least one further transmitting coil (13) generates the magnetic fluxes (21, 22) generated by the transmitting coils (11, 12).
entgegengerichtet ist.  is opposite.
2. Sensoreinrichtung nach Anspruch 1, 2. Sensor device according to claim 1,
d a d u r c h g e k e n n z e i c h n e t , dass d a d u r c h e c e n c i n e s that
die Sendespulen (11,12), die zumindest eine weitere Sendespu- le (13) und die Empfangsspulen (32, 33; 36, 37) derart angeord¬ net sind, dass sich bei Vorbeibewegung eines Rades an der Sensoreinrichtung in den Empfangsspulen (32, 33; 36, 37) der jeweiligen Empfangseinrichtung (31,35) jeweils eine Empfangs¬ spannung (41,42) gleicher Polarität ergibt. the transmit coil (11,12), the at least one further Sendespu- le (13) and the receiver coils (32, 33; 36, 37) are such angeord ¬ net, that when moving past a wheel on the sensor device in the receiving coils (32 , 33; 36, 37) of the respective receiving means (31,35) each have a reception ¬ voltage (41,42) results in the same polarity.
3. Sensoreinrichtung nach Anspruch 1 oder 2, 3. Sensor device according to claim 1 or 2,
d a d u r c h g e k e n n z e i c h n e t , dass die Empfangsspulen (32,33,36,37) im gleichen Abstand und in gleicher Ausrichtung zur Fahrschiene (60) angeordnet sind. characterized in that the receiving coils (32,33,36,37) are arranged at the same distance and in the same orientation to the running rail (60).
4. Sensoreinrichtung nach einem der vorangehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass 4. Sensor device according to one of the preceding claims, characterized in that a
die Sensoreinrichtung einen die Sendespulen (11,12) und die zumindest eine weitere Sendespule (13) speisenden Generator aufweist . the sensor device has a generator supplying the transmitting coils (11, 12) and the at least one further transmitting coil (13).
5. Sensoreinrichtung nach einem der vorangehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass 5. Sensor device according to one of the preceding claims, characterized in that a
die Sendespulen (11,12), die zumindest eine weitere Sendespu¬ le (13) und/oder die Empfangsspulen (32, 33; 36, 37) jeweils als Bestandteil einer Schwingkreisschaltung ausgebildet sind. the transmitting coils (11,12), the at least one further Sendespu ¬ le (13) and / or the receiving coils (32, 33, 36, 37) are each formed as part of a resonant circuit.
6. Sensoreinrichtung nach einem der vorangehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass 6. Sensor device according to one of the preceding claims, characterized in that a
die Sendespulen (11,12), die zumindest eine weitere Sendespu¬ le (13) und/oder die Empfangsspulen (32, 33; 36, 37) frei von ferromagnetischen Materialien ausgebildet sind. the transmit coil (11,12), the at least one further Sendespu ¬ le (13) and / or the receiver coils (32, 33; 36, 37) are formed free from ferromagnetic materials.
7. Sensoreinrichtung nach einem der vorangehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass 7. Sensor device according to one of the preceding claims, characterized in that a
die Sendespulen (11,12) und die zumindest eine weitere Sende- spule (13) in einem gemeinsamen Gehäuse (10) angeordnet sind. the transmitting coils (11, 12) and the at least one further transmitting coil (13) are arranged in a common housing (10).
8. Sensoreinrichtung nach einem der vorangehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass 8. Sensor device according to one of the preceding claims, characterized in that a
die Empfangseinrichtungen (31,35) in einem gemeinsamen Gehäu- se (30) angeordnet sind. the receiving devices (31, 35) are arranged in a common housing (30).
9. Radsensor mit 9. Wheel sensor with
- einer Sensoreinrichtung nach einem der vorangehenden Ansprüche sowie  - A sensor device according to one of the preceding claims and
- einer an die Empfangseinrichtungen (31,35) angebundenen AusWerteeinrichtung . - One to the receiving means (31,35) attached Auswerterteeinrichtung.
10. Radsensor nach Anspruch 9, d a d u r c h g e k e n n z e i c h n e t , dass 10. Wheel sensor according to claim 9, characterized in that
die Auswerteeinrichtung ausgebildet ist, anhand von Signalen der Empfangseinrichtungen (31,35) eine Fahrtrichtungserkennung vorzunehmen. the evaluation device is designed to carry out a direction of travel recognition on the basis of signals from the receiving devices (31, 35).
11. Einrichtung zum Steuern und/oder Überwachen des schienengebundenen Verkehrs, insbesondere Gleisfreimeldeeinrichtung, mit zumindest einem Radsensor nach einem der Ansprüche 9 oder 10. 11. Device for controlling and / or monitoring the rail-bound traffic, in particular track-free reporting device, with at least one wheel sensor according to one of claims 9 or 10.
EP16726083.5A 2015-06-30 2016-05-30 Sensor device for detecting a wheel moving along a rail Active EP3294608B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL16726083T PL3294608T3 (en) 2015-06-30 2016-05-30 Sensor device for detecting a wheel moving along a rail

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015212120.8A DE102015212120A1 (en) 2015-06-30 2015-06-30 Sensor device for detecting a wheel moving along a running rail
PCT/EP2016/062141 WO2017001128A1 (en) 2015-06-30 2016-05-30 Sensor device for detecting a wheel moving along a rail

Publications (2)

Publication Number Publication Date
EP3294608A1 true EP3294608A1 (en) 2018-03-21
EP3294608B1 EP3294608B1 (en) 2021-11-17

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EP (1) EP3294608B1 (en)
AU (1) AU2016287693B2 (en)
DE (1) DE102015212120A1 (en)
ES (1) ES2905590T3 (en)
PL (1) PL3294608T3 (en)
WO (1) WO2017001128A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1605427C3 (en) * 1967-07-20 1974-04-25 Siemens Ag, 1000 Berlin Und 8000 Muenchen Circuit arrangement for generating and transmitting axle counting pulses in axle counting systems
US3721821A (en) * 1970-12-14 1973-03-20 Abex Corp Railway wheel sensor
DD118034A1 (en) * 1975-03-19 1976-02-12
DE10350733B4 (en) * 2003-10-20 2006-04-27 Werner Turck Gmbh & Co. Kg Inductive proximity switch with difference coil arrangement has coils of receiving coil arrangement arranged and connected so stimulation field produces difference voltage, compensation coil pair almost uninfluenced by eddy current field
PL199810B1 (en) 2003-11-12 2008-11-28 Bombardier Transp Zwus Polska Rail-vehicle wheel sensor combined two-channel head

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AU2016287693B2 (en) 2019-01-31
PL3294608T3 (en) 2022-03-14
AU2016287693A1 (en) 2017-12-21
DE102015212120A1 (en) 2017-01-05
ES2905590T3 (en) 2022-04-11
EP3294608B1 (en) 2021-11-17
WO2017001128A1 (en) 2017-01-05

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