EP2962915B1 - Supervision device and sensor device comprising a supervision device - Google Patents

Supervision device and sensor device comprising a supervision device Download PDF

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Publication number
EP2962915B1
EP2962915B1 EP14175593.4A EP14175593A EP2962915B1 EP 2962915 B1 EP2962915 B1 EP 2962915B1 EP 14175593 A EP14175593 A EP 14175593A EP 2962915 B1 EP2962915 B1 EP 2962915B1
Authority
EP
European Patent Office
Prior art keywords
sensor
contact
track
supervision
circuit
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.)
Active
Application number
EP14175593.4A
Other languages
German (de)
French (fr)
Other versions
EP2962915A1 (en
Inventor
Amine Arezki
Thomas Gebert
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.)
Thales Management and Services Deutschland GmbH
Original Assignee
Thales Management and Services Deutschland GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to HRP20220834TT priority Critical patent/HRP20220834T1/en
Priority to DK14175593.4T priority patent/DK2962915T3/en
Priority to SI201431970T priority patent/SI2962915T1/en
Priority to ES14175593T priority patent/ES2921603T3/en
Application filed by Thales Management and Services Deutschland GmbH filed Critical Thales Management and Services Deutschland GmbH
Priority to PT141755934T priority patent/PT2962915T/en
Priority to EP14175593.4A priority patent/EP2962915B1/en
Priority to PL14175593.4T priority patent/PL2962915T3/en
Priority to HUE14175593A priority patent/HUE059172T2/en
Priority to LTEP14175593.4T priority patent/LT2962915T/en
Priority to PCT/EP2015/060997 priority patent/WO2016000868A1/en
Publication of EP2962915A1 publication Critical patent/EP2962915A1/en
Application granted granted Critical
Publication of EP2962915B1 publication Critical patent/EP2962915B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/16—Devices for counting axles; Devices for counting vehicles
    • B61L1/169—Diagnosis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
    • B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
    • B61L3/08—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically
    • B61L3/12—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves
    • B61L3/121—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves using magnetic induction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
    • B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
    • B61L3/08—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically
    • B61L3/12—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves
    • B61L3/126—Constructional details

Definitions

  • the invention concerns a sensor device with a sensor element and supervision device for monitoring a mounting state of a sensor element to a track.
  • the sensor element to be supervised is a detection point for detecting passing axles.
  • the detection points have to be fixed to a rail. It is known to mount detection points to the rail by screwing. In order to do so the track has to be prepared with drilled holes for attaching the sensor elements which is quite laborious.
  • Another negative aspect is that the position of the sensor elements is fixed and cannot be varied easily.
  • DE 43 25 018 A1 discloses a device for detecting a mounting state of a sensor element to a track.
  • the sensor element is mounted to the track via a mounting element and a clamp.
  • a first sensor is attached to the mounting element and detects whether the mounting element is mounted correctly at the clamp. In case sensor element (together with mounting element) falls off (loose connection between mounting element and sensor element), sensor recognizes a change in distance or pressure and generates a warning signal.
  • a second sensor is attached to the clamp and detects whether the clamp is mounted correctly at track. In case the clamp falls off (loose connection between mounting element and track, sensor recognizes a change in distance or pressure and generates a warning signal. Both sensors have to be connected electrically with sensor element, which makes the arrangement complex concerning wiring and maintenance.
  • EP 1 935 748 A1 discloses a short circuit bridge which can be bent down by foot.
  • the sensor device comprises a sensor element, a clamp for mounting the sensor element to a track and a supervision device for monitoring a mounting state of the sensor element to the track.
  • the supervision device comprises: a sensor contact element being adapted for attachment to the sensor element, a track contact element being adapted for attachment to the track, wherein one of the contact elements comprises two electrical contact points which are insulated from each other, and the other contact element comprises an electrical contact area, wherein in a mounted state of the sensor element the track contact element is mounted at the track and the contact area contacts both electrical contact points thereby forming an electrical contact between the two electrical contact points, and wherein in an dismounted state of the sensor element the contact area does not form an electrical contact between the two contact points.
  • the sensor element can have two mounting states: "mounted”, i.e. the sensor is correctly mounted to the track for detection, or "dismounted”, i.e. the sensor is dismounted or not correctly mounted to the track, e.g. due to broken clamps or a bad installation.
  • a mechanical and electrical contact between the sensor contact element and the track contact element and thereby an electrical contact between the electrical contact points and the electrical contact area is provided (contact area and the electrical contact points coincide) if the sensor element is correctly mounted.
  • the idea is to interrupt the electrical contact between the electrical contact points when the sensor element is not properly fixed to the rail.
  • a damaged or disconnected sensor element can be detected and the traffic controller can be informed, e.g. by raising an alarm.
  • the track contact element comprises the electrical contact area and the sensor contact element comprises the two insulated electrical contact points.
  • the track contact element can be designed small and requires only low mass since it merely has to carry the contact area or the contact points respectively. Therefore it can be easily and safely mounted to the track, e.g. a rail. Since in the mounted state the track contact element is covered by the sensor, there is no danger of damage due to flying objects as stones, hail etc. The danger of accidental dismounting of the track contact element is therefore extremely low.
  • the contact area can comprise a single electrical conducting area being dimensioned such that both single electrical contact points of the other contact element can be made to coincide with the contact area.
  • the contact area comprises two further contact points and an electrical connection between the two further contact points, i.e. in this case the electrical contact points coincide with the further contact points of the contact area when the sensor element is correctly mounted.
  • the further contact points of the contact area are preferably permanently connected by the electrical connection.
  • a detection device for detecting an electrical contact between the electrical contact points.
  • the detection device can be an ampere meter, measuring whether there is an electrical current flow within a circuit comprising the electrical contact points and the contact area.
  • the detection device can be used to trigger the power supply of the sensor elements (see below).
  • the track contact element and/or the sensor contact element are a contact plate.
  • Contact plates are flat and therefore space saving.
  • the supervision device of the inventive sensor device is preferably used for railway applications, e.g. for supervision of balises or detection points of an axle counter.
  • the track contact element is attached to the track.
  • the attachment of the track contact element is preferably detachable.
  • the sensor supervision device of the inventive sensor device ensures a high safety level since a disconnection or damage at the sensor element can be detected reliably.
  • a power supply is provided for powering the sensor element via a sensor circuit.
  • the electrical contact points and the contact area are part of a supervision circuit, wherein the supervision circuit switches the power supply.
  • the sensor circuit and the supervision circuit are separate circuits, i.e. each of the circuits form a current path.
  • the two current paths are linked with each other in that the supervision circuit disconnects the power supply of the sensor circuit. Therefore the electrical contact points are connected to the power supply which powers the sensor element.
  • the supervision device controls whether the sensor circuit (and thereby the sensor element) is powered by the power supply or not. In case of a dismounted sensor element the supervision circuit is opened (no contact between the electrical contact points) and no current is supplied to the sensor element.
  • the sensor element can be identified to be "out of order", e.g. by measuring the current within the sensor circuit or the supervision circuit.
  • additional wires are required in addition to the wires belonging to the sensor circuit.
  • the sensor contact element is attached to the sensor element.
  • additional cables have to be provided for the supervision circuit.
  • the attachment of the sensor contact element and the track contact element is preferably detachable.
  • the sensor contact element is integrated in the sensor element. No additional cables have to be provided along the track. Yet, a new design of the sensor elements may be necessary in this case.
  • the advantages of the present invention come to bear particularly if the mounting device is a clamp. Clamping of the sensor element to the track is advantageous since no drilling holes have to be provided, thereby enabling a flexible positioning and an easy mounting. With the inventive sensor device clamping solutions with a high safety level can be provided. Nevertheless the inventive sensor device can be also applied with mounting devices comprising a screw mechanism.
  • the sensor element is a detection point of an axle counter.
  • the track to which the detection point is mounted is a rail.
  • the sensor element is a balise.
  • the track to which the balise is mounted is a railway sleeper.
  • Fig. 1a shows a track contact element 1 of a supervision device of an inventive sensor device, the track contact element 1 being attached to a rail 2 and comprising two electrical contact points 3a, 3b , which are separated from each other, but are electrically connected, e.g. via a wire 3c (see fig. 2 and 3 ), the contact points 3a, 3b and the wire 3c forming a contact area.
  • a wire 3c see fig. 2 and 3
  • Fig. 1b shows sensor elements 4 (here: two sensor elements 4 of a detection point of an axle counter are shown) and sensor contact elements 5 each of which can be attached to one of the sensor elements 4, e.g. by screwing.
  • the sensor contact element 4 comprises contact points 6a, 6b which are separated and insulated from each other.
  • the contact points 6a, 6b are positioned at that side of the sensor contact element which is opposite to the attached sensor element 1.
  • Fig. 1c shows the sensor element 4 attached to the sensor contact element 5 in a dismounted state. Wires 7 are provided forming a supervision circuit 9 (see fig 2 ).
  • Fig. 1d shows the sensor element 4 attached to the sensor contact element 5 in a mounted state.
  • the sensor element 4 with its attached sensor contact element 5 is fixed to the rail 2 by means of a mounting device 8 (here: a clamp), thereby aligning the contact points 3a, 3b of track contact element 1 with the contact points 6a, 6b of the sensor contact element 5, i.e. the supervision circuit 9 is closed.
  • a mounting device 8 here: a clamp
  • Fig. 2 , 3 show circuit diagrams of two embodiments of the inventive sensor device. Two electrical circuits (supervision circuit 9 and sensor circuit 12 ) are provided.
  • the supervision circuit 9 (here with two sensor contact elements 5, 5') comprises the electrical contact points 3a, 3b,the electrical connections 3c between the electrical contact points 3a, 3b, the electrical contact points 6a, 6b of the sensor contact elements 5, a power supply 10 , and an electronic unit 11 .
  • the sensor circuit 12 switches the power supply 10 which powers the sensor elements 4, 4' via the electronic unit 11.
  • the sensor elements 4, 4' are connected inductively with each other.
  • the sensor contact element 5, 5' has to be properly mounted to the rail 2 such that the contact points 3a, 3b of the track contact element 1 coincide (or at least overlap) with the contact points 6a, 6b of the sensor contact element 5, 5', as shown in fig. 1d .
  • the closed supervision circuit 9 connects the power supply 10 to the sensor circuit 12 for driving the sensor element 4, 4' via the electronic unit 11, i.e. in case the supervision circuit 9 is closed, the power supply 10 powers the sensor elements 4 via the sensor circuit 12.
  • the supervision circuit 9 is open (e.g. because of an improperly fixed sensor element 4)
  • the power supply 10 of the sensor elements 4 is cut off the sensor circuit 12 and the sensor element 4 is detected by a detection device 13 as being out of order.
  • the detection device 13 may comprise a separate evaluator (e.g. an axle counter evaluator) which detects a disturbance of the detection point (sensor element and electronic unit).
  • Sensor elements with sensor circuits as known from the state of the art can be used with this embodiment. It should be noted that it is also possible to provide the insulated contact points with the track contact element 1 and the contact area with the sensor contact element 5.
  • the sensor device shown in fig. 2 comprises detachable sensor contact elements 5, which can be attached to and detached from the corresponding sensor element 4. Separate cables 16, 17 have to be provided for the wires of the supervision circuit 9 and the sensor circuit 12.
  • Fig. 3 shows an alternative embodiment.
  • the sensor contact elements 5' are permanently attached to sensor elements 4', i.e. the sensor contact elements 5' can be integrated in the sensor elements 4'.
  • the wires of the supervision circuit 9 and the sensor circuit 12 can be carried in one common cable 18 .
  • Fig. 4 shows another embodiment of the inventive sensor device, in which a supervision circuit 9' is provided which is not linked to the sensor circuit 12, i.e. the supervision circuit 9' does not control the sensor circuit 12 directly. More precisely, the power supply 10 is not part of the supervision circuit 9'. Instead a signal generator 14 is provided which generates a supervision signal within the supervision circuit 9' and checks the supervision signal availability. If all the contacts of the electrical contact points 3a, 3b, 6a, 6b, are closed, the supervision signal is available. Every open contact will be recognized by detecting a missing supervision signal and an alarm will be send to the detection device 13 via a network 15.
  • circuit diagrams of fig. 2 - 4 show circuits with two sensor elements 4. Yet, it is clear, that only one sensor element 4 or more than two sensor elements can be provided within a sensor circuit.
  • sensor elements can be used for the present invention, e.g. balises.

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  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Burglar Alarm Systems (AREA)

Description

    Background of the invention
  • The invention concerns a sensor device with a sensor element and supervision device for monitoring a mounting state of a sensor element to a track.
  • In case of an axle counter the sensor element to be supervised is a detection point for detecting passing axles. The detection points have to be fixed to a rail. It is known to mount detection points to the rail by screwing. In order to do so the track has to be prepared with drilled holes for attaching the sensor elements which is quite laborious. Another negative aspect is that the position of the sensor elements is fixed and cannot be varied easily.
  • In order to overcome the above mentioned disadvantages clamping solutions have been developed to fix a sensor element to a rail. Yet, sensor devices with clamped sensor elements cannot detect whether the clamp is properly fixed to the rail or not. Thus, if the clamp breaks or is damaged the axle counter could become blind, i.e. the detection point is assumed to work, but no more axles are counted by the detection point, which can result in dangerous situations.
  • DE 43 25 018 A1 discloses a device for detecting a mounting state of a sensor element to a track. The sensor element is mounted to the track via a mounting element and a clamp. A first sensor is attached to the mounting element and detects whether the mounting element is mounted correctly at the clamp. In case sensor element (together with mounting element) falls off (loose connection between mounting element and sensor element), sensor recognizes a change in distance or pressure and generates a warning signal. A second sensor is attached to the clamp and detects whether the clamp is mounted correctly at track. In case the clamp falls off (loose connection between mounting element and track, sensor recognizes a change in distance or pressure and generates a warning signal. Both sensors have to be connected electrically with sensor element, which makes the arrangement complex concerning wiring and maintenance.
  • EP 1 935 748 A1 discloses a short circuit bridge which can be bent down by foot.
    • Object of the invention
  • It is an object of the invention to provide a sensor device, which allows reliable detection of a dismounting or an improper mounting of the sensor element.
    • Description of the invention
  • This object is solved by a sensor device according to claim 1.
  • According to the invention the sensor device comprises a sensor element, a clamp for mounting the sensor element to a track and a supervision device for monitoring a mounting state of the sensor element to the track. The supervision device comprises: a sensor contact element being adapted for attachment to the sensor element, a track contact element being adapted for attachment to the track, wherein one of the contact elements comprises two electrical contact points which are insulated from each other, and the other contact element comprises an electrical contact area, wherein in a mounted state of the sensor element the track contact element is mounted at the track and the contact area contacts both electrical contact points thereby forming an electrical contact between the two electrical contact points, and wherein in an dismounted state of the sensor element the contact area does not form an electrical contact between the two contact points.
  • The sensor element can have two mounting states: "mounted", i.e. the sensor is correctly mounted to the track for detection, or "dismounted", i.e. the sensor is dismounted or not correctly mounted to the track, e.g. due to broken clamps or a bad installation.
  • According to the invention a mechanical and electrical contact between the sensor contact element and the track contact element and thereby an electrical contact between the electrical contact points and the electrical contact area is provided (contact area and the electrical contact points coincide) if the sensor element is correctly mounted. The idea is to interrupt the electrical contact between the electrical contact points when the sensor element is not properly fixed to the rail. Thus a damaged or disconnected sensor element can be detected and the traffic controller can be informed, e.g. by raising an alarm.
  • Preferably the track contact element comprises the electrical contact area and the sensor contact element comprises the two insulated electrical contact points.
  • The track contact element can be designed small and requires only low mass since it merely has to carry the contact area or the contact points respectively. Therefore it can be easily and safely mounted to the track, e.g. a rail. Since in the mounted state the track contact element is covered by the sensor, there is no danger of damage due to flying objects as stones, hail etc. The danger of accidental dismounting of the track contact element is therefore extremely low.
  • The contact area can comprise a single electrical conducting area being dimensioned such that both single electrical contact points of the other contact element can be made to coincide with the contact area. In a preferred embodiment however the contact area comprises two further contact points and an electrical connection between the two further contact points, i.e. in this case the electrical contact points coincide with the further contact points of the contact area when the sensor element is correctly mounted. The further contact points of the contact area are preferably permanently connected by the electrical connection.
  • In a preferred embodiment of the supervision device of the inventive sensor device a detection device is provided for detecting an electrical contact between the electrical contact points. The detection device can be an ampere meter, measuring whether there is an electrical current flow within a circuit comprising the electrical contact points and the contact area. The detection device can be used to trigger the power supply of the sensor elements (see below).
  • Preferably the track contact element and/or the sensor contact element are a contact plate. Contact plates are flat and therefore space saving.
  • The supervision device of the inventive sensor device is preferably used for railway applications, e.g. for supervision of balises or detection points of an axle counter.
  • Preferably, the track contact element is attached to the track.
  • The attachment of the track contact element is preferably detachable.
  • The sensor supervision device of the inventive sensor device ensures a high safety level since a disconnection or damage at the sensor element can be detected reliably.
  • According to the invention, a power supply is provided for powering the sensor element via a sensor circuit.
  • According to the invention, the electrical contact points and the contact area are part of a supervision circuit, wherein the supervision circuit switches the power supply.
  • The sensor circuit and the supervision circuit are separate circuits, i.e. each of the circuits form a current path. The two current paths are linked with each other in that the supervision circuit disconnects the power supply of the sensor circuit. Therefore the electrical contact points are connected to the power supply which powers the sensor element. By mounting/dismounting of the sensor element to/from the track the supervision circuit is closed/opened respectively. The supervision device controls whether the sensor circuit (and thereby the sensor element) is powered by the power supply or not. In case of a dismounted sensor element the supervision circuit is opened (no contact between the electrical contact points) and no current is supplied to the sensor element. Thus the sensor element can be identified to be "out of order", e.g. by measuring the current within the sensor circuit or the supervision circuit. For providing the supervision circuit additional wires are required in addition to the wires belonging to the sensor circuit.
  • In order to avoid modifications of existing sensor elements the sensor contact element is attached to the sensor element. For this embodiment additional cables have to be provided for the supervision circuit. The attachment of the sensor contact element and the track contact element is preferably detachable.
  • Alternatively the sensor contact element is integrated in the sensor element. No additional cables have to be provided along the track. Yet, a new design of the sensor elements may be necessary in this case.
  • The advantages of the present invention come to bear particularly if the mounting device is a clamp. Clamping of the sensor element to the track is advantageous since no drilling holes have to be provided, thereby enabling a flexible positioning and an easy mounting. With the inventive sensor device clamping solutions with a high safety level can be provided. Nevertheless the inventive sensor device can be also applied with mounting devices comprising a screw mechanism.
  • In a special embodiment the sensor element is a detection point of an axle counter. The track to which the detection point is mounted is a rail.
  • In another embodiment the sensor element is a balise. The track to which the balise is mounted is a railway sleeper.
  • Further advantages can be extracted from the description and the enclosed drawing.
  • The embodiments mentioned are not to be understood as exhaustive enumeration but rather have exemplary character for the description of the invention. The invention is defined by the appended claims.
    • Drawings
  • The invention is shown in the drawing.
    • Fig. 1a
    shows a track contact element attached to a rail.
    Fig. 1b
    shows a sensor contact element of a supervision device according to the invention and a sensor element in a dismounted state.
    Fig. 1c
    shows the track contact element of fig. 1a and the sensor contact element of fig. 1b attached to the sensor element.
    Fig. 1d
    shows a sensor device according to the invention, wherein the sensor element is mounted correctly by means of a clamp.
    Fig. 2
    shows a circuit diagram of a first embodiment of the inventive sensor device comprising a supervision device with sensor contact elements which are detachable from sensor elements, wherein a supervision circuit controls a sensor circuit.
    Fig. 3
    shows a circuit diagram of a second embodiment of the inventive sensor device comprising a supervision device with sensor contact elements which are integrated in sensor elements, wherein a supervision circuit controls a sensor circuit.
    Fig. 4
    shows a circuit diagram of a third embodiment of the inventive sensor device, wherein a supervision circuit sends a supervision signal to a detection device without controlling the sensor circuit.
  • Fig. 1a shows a track contact element 1 of a supervision device of an inventive sensor device, the track contact element 1 being attached to a rail 2 and comprising two electrical contact points 3a, 3b, which are separated from each other, but are electrically connected, e.g. via a wire 3c (see fig. 2 and 3), the contact points 3a, 3b and the wire 3c forming a contact area.
  • Fig. 1b shows sensor elements 4 (here: two sensor elements 4 of a detection point of an axle counter are shown) and sensor contact elements 5 each of which can be attached to one of the sensor elements 4, e.g. by screwing. The sensor contact element 4 comprises contact points 6a, 6b which are separated and insulated from each other. The contact points 6a, 6b are positioned at that side of the sensor contact element which is opposite to the attached sensor element 1.
  • Fig. 1c shows the sensor element 4 attached to the sensor contact element 5 in a dismounted state. Wires 7 are provided forming a supervision circuit 9 (see fig 2 ).
  • Fig. 1d shows the sensor element 4 attached to the sensor contact element 5 in a mounted state. The sensor element 4 with its attached sensor contact element 5 is fixed to the rail 2 by means of a mounting device 8 (here: a clamp), thereby aligning the contact points 3a, 3b of track contact element 1 with the contact points 6a, 6b of the sensor contact element 5, i.e. the supervision circuit 9 is closed.
  • Fig. 2 , 3 show circuit diagrams of two embodiments of the inventive sensor device. Two electrical circuits (supervision circuit 9 and sensor circuit 12) are provided.
  • The supervision circuit 9 (here with two sensor contact elements 5, 5') comprises the electrical contact points 3a, 3b,the electrical connections 3c between the electrical contact points 3a, 3b, the electrical contact points 6a, 6b of the sensor contact elements 5, a power supply 10, and an electronic unit 11. The sensor circuit 12 switches the power supply 10 which powers the sensor elements 4, 4' via the electronic unit 11. The sensor elements 4, 4' are connected inductively with each other.
  • In order to close the supervision circuit 9 the sensor contact element 5, 5' has to be properly mounted to the rail 2 such that the contact points 3a, 3b of the track contact element 1 coincide (or at least overlap) with the contact points 6a, 6b of the sensor contact element 5, 5', as shown in fig. 1d. The closed supervision circuit 9 connects the power supply 10 to the sensor circuit 12 for driving the sensor element 4, 4' via the electronic unit 11, i.e. in case the supervision circuit 9 is closed, the power supply 10 powers the sensor elements 4 via the sensor circuit 12.
  • In case the supervision circuit 9 is open (e.g. because of an improperly fixed sensor element 4), the power supply 10 of the sensor elements 4 is cut off the sensor circuit 12 and the sensor element 4 is detected by a detection device 13 as being out of order. The detection device 13 may comprise a separate evaluator (e.g. an axle counter evaluator) which detects a disturbance of the detection point (sensor element and electronic unit). Sensor elements with sensor circuits as known from the state of the art can be used with this embodiment. It should be noted that it is also possible to provide the insulated contact points with the track contact element 1 and the contact area with the sensor contact element 5.
  • The sensor device shown in fig. 2 comprises detachable sensor contact elements 5, which can be attached to and detached from the corresponding sensor element 4. Separate cables 16, 17 have to be provided for the wires of the supervision circuit 9 and the sensor circuit 12.
  • Fig. 3 shows an alternative embodiment. The sensor contact elements 5' are permanently attached to sensor elements 4', i.e. the sensor contact elements 5' can be integrated in the sensor elements 4'. The wires of the supervision circuit 9 and the sensor circuit 12 can be carried in one common cable 18.
  • Fig. 4 shows another embodiment of the inventive sensor device, in which a supervision circuit 9' is provided which is not linked to the sensor circuit 12, i.e. the supervision circuit 9' does not control the sensor circuit 12 directly. More precisely, the power supply 10 is not part of the supervision circuit 9'. Instead a signal generator 14 is provided which generates a supervision signal within the supervision circuit 9' and checks the supervision signal availability. If all the contacts of the electrical contact points 3a, 3b, 6a, 6b, are closed, the supervision signal is available. Every open contact will be recognized by detecting a missing supervision signal and an alarm will be send to the detection device 13 via a network 15.
  • The circuit diagrams of fig. 2 - 4 show circuits with two sensor elements 4. Yet, it is clear, that only one sensor element 4 or more than two sensor elements can be provided within a sensor circuit.
  • Other sensor elements can be used for the present invention, e.g. balises.
    • List of reference signs
    • 1
    track contact element
    2
    rail (track)
    3a, 3b
    electrical contact points of the contact area (further contact points)
    3c
    electrical connection between the electrical contact points 3a, 3b
    4, 4'
    sensor elements
    5, 5'
    sensor contact element
    6a, 6b
    electrical contact points
    7
    wires
    8
    mounting device
    9, 9'
    supervision circuit
    10
    power supply
    11
    electronic unit
    12
    sensor circuit
    12'
    combined sensor circuit
    13
    detection device
    14
    signal generator
    15
    network
    16-18
    cables

Claims (9)

  1. Sensor device with a sensor element (4, 4'), a clamp (8) for mounting the sensor element (4) to a track (2), and a supervision device for monitoring a mounting state of the sensor element (4, 4') to the track (2),
    characterized in that the supervision device comprises:
    a sensor contact element (5, 5') being adapted for attachment to the sensor element (4, 4'),
    a track contact element (1) being adapted for attachment to the track (2),
    wherein one of the contact elements (1, 5, 5') comprises two electrical contact points (6a, 6b) which are insulated from each other, and the other contact element (1, 5, 5') comprises an electrical contact area (3a, 3b, 3c),
    wherein in a mounted state of the sensor element (4, 4') the track contact element (1) is mounted at the track (2) and the contact area (3a, 3b, 3c) contacts both electrical contact points thereby forming an electrical contact between the two electrical contact points (6a, 6b), and
    wherein in an dismounted state of the sensor element (4, 4') the contact area (3a, 3b, 3c) does not form an electrical contact between the two contact points (6a, 6b),
    that a power supply (10) is provided for powering the sensor element (4, 4') via a sensor circuit (12, 12'), and
    that the electrical contact points (6a, 6b) and the contact area (3a, 3b, 3c) are part of a supervision circuit (9), wherein the supervision circuit (9) switches the power supply (10).
  2. Sensor device according to claim 1, characterized in that the contact area (3a, 3b, 3c) comprises two further contact points (3a, 3b) and an electrical connection (3c) between the two further contact points (3a, 3b).
  3. Sensor device according to one of the preceding claims, characterized in that a detection device (13) is provided for detecting an electrical contact between the electrical contact points (6a, 6b).
  4. Sensor device according to one of the preceding claims, characterized in that the track contact element (1) and/or the sensor contact element (5) is a contact plate.
  5. Sensor device according to one of the preceding claims characterized in that the track contact element (1) is mounted at the track (2).
  6. Sensor device according one of the claims 1 through 5, characterized in that the sensor contact element (5) is attached to the sensor element (4).
  7. Sensor device according one of the claims 1 through 5, characterized in that the sensor contact element (5') is integrated in the sensor element (4').
  8. Sensor device according to one of the claims 1 through 7, characterized in that the sensor element (4, 4') is a detection point of an axle counter.
  9. Sensor device according to one of the claims 1 through 7, characterized in that the sensor element is a balise.
EP14175593.4A 2014-07-03 2014-07-03 Supervision device and sensor device comprising a supervision device Active EP2962915B1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
SI201431970T SI2962915T1 (en) 2014-07-03 2014-07-03 Supervision device and sensor device comprising a supervision device
ES14175593T ES2921603T3 (en) 2014-07-03 2014-07-03 Monitoring device and sensor device comprising a monitoring device
HUE14175593A HUE059172T2 (en) 2014-07-03 2014-07-03 Supervision device and sensor device comprising a supervision device
PT141755934T PT2962915T (en) 2014-07-03 2014-07-03 Supervision device and sensor device comprising a supervision device
DK14175593.4T DK2962915T3 (en) 2014-07-03 2014-07-03 Monitoring device and sensor device comprising a monitoring device
PL14175593.4T PL2962915T3 (en) 2014-07-03 2014-07-03 Supervision device and sensor device comprising a supervision device
HRP20220834TT HRP20220834T1 (en) 2014-07-03 2014-07-03 Supervision device and sensor device comprising a supervision device
LTEP14175593.4T LT2962915T (en) 2014-07-03 2014-07-03 Supervision device and sensor device comprising a supervision device
EP14175593.4A EP2962915B1 (en) 2014-07-03 2014-07-03 Supervision device and sensor device comprising a supervision device
PCT/EP2015/060997 WO2016000868A1 (en) 2014-07-03 2015-05-19 Supervision device and sensor device comprising a supervision device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14175593.4A EP2962915B1 (en) 2014-07-03 2014-07-03 Supervision device and sensor device comprising a supervision device

Publications (2)

Publication Number Publication Date
EP2962915A1 EP2962915A1 (en) 2016-01-06
EP2962915B1 true EP2962915B1 (en) 2022-06-01

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Application Number Title Priority Date Filing Date
EP14175593.4A Active EP2962915B1 (en) 2014-07-03 2014-07-03 Supervision device and sensor device comprising a supervision device

Country Status (10)

Country Link
EP (1) EP2962915B1 (en)
DK (1) DK2962915T3 (en)
ES (1) ES2921603T3 (en)
HR (1) HRP20220834T1 (en)
HU (1) HUE059172T2 (en)
LT (1) LT2962915T (en)
PL (1) PL2962915T3 (en)
PT (1) PT2962915T (en)
SI (1) SI2962915T1 (en)
WO (1) WO2016000868A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015209721B3 (en) * 2015-05-27 2016-10-27 Thales Deutschland Gmbh Fastening device for fastening a sensor element to a rail and Achszählvorrichtung
CN111098886B (en) * 2019-11-21 2021-04-16 浙江大学 Device and method for verifying on-line interrogator of vehicle-mounted transponder for parking
RS63690B1 (en) 2019-12-12 2022-11-30 Thales Man & Services Deutschland Gmbh Rail contact element and drop off detection unit
DE102021131123A1 (en) 2021-11-26 2023-06-01 Thales Management & Services Deutschland Gmbh Rail contact arrangement with break detection device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3808484C2 (en) * 1986-12-22 1996-07-11 Siemens Ag Sensor device for railway systems
DE4325018A1 (en) * 1992-09-09 1994-03-10 Tiefenbach Gmbh Railway switch generating signal upon passing wheel for evaluating circuit - has position sensor monitoring its installed position w.r.t. stipulated position
US5628479A (en) * 1995-12-12 1997-05-13 Harmon Industries, Inc. Vital wheel detector
DE10125281A1 (en) * 2001-05-23 2002-11-28 Alcatel Sa Rail contact for an axle counter
NL1033077C2 (en) * 2006-12-18 2008-06-19 Dual Inventive V O F Detection device of a short-circuit bridge.
DE102011086356A1 (en) * 2011-11-15 2013-05-16 Siemens Aktiengesellschaft Method and device for monitoring the stability of a mechanical connection

Also Published As

Publication number Publication date
HRP20220834T1 (en) 2022-10-14
DK2962915T3 (en) 2022-07-18
PL2962915T3 (en) 2022-09-12
HUE059172T2 (en) 2022-11-28
SI2962915T1 (en) 2022-08-31
PT2962915T (en) 2022-07-25
WO2016000868A1 (en) 2016-01-07
LT2962915T (en) 2022-07-25
ES2921603T3 (en) 2022-08-30
EP2962915A1 (en) 2016-01-06

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