WO2022089689A1 - Détecteur de proximité, procédé pour faire fonctionner un détecteur de proximité de ce type, et système et procédé de surveillance d'un tronçon de voie - Google Patents

Détecteur de proximité, procédé pour faire fonctionner un détecteur de proximité de ce type, et système et procédé de surveillance d'un tronçon de voie Download PDF

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Publication number
WO2022089689A1
WO2022089689A1 PCT/DE2021/100860 DE2021100860W WO2022089689A1 WO 2022089689 A1 WO2022089689 A1 WO 2022089689A1 DE 2021100860 W DE2021100860 W DE 2021100860W WO 2022089689 A1 WO2022089689 A1 WO 2022089689A1
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WO
WIPO (PCT)
Prior art keywords
sensor element
proximity switch
sensor elements
track section
detection area
Prior art date
Application number
PCT/DE2021/100860
Other languages
German (de)
English (en)
Inventor
Dr. Martin KNEPPE
Markus Mende
Original Assignee
Pintsch 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
Application filed by Pintsch Gmbh filed Critical Pintsch Gmbh
Priority to EP21827581.6A priority Critical patent/EP4237311A1/fr
Priority to DE112021005736.7T priority patent/DE112021005736A5/de
Publication of WO2022089689A1 publication Critical patent/WO2022089689A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/16—Devices for counting axles; Devices for counting vehicles
    • B61L1/163—Detection devices
    • B61L1/165—Electrical
    • 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
    • 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
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/021—Measuring and recording of train speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
    • B61L25/02—Indicating or recording positions or identities of vehicles or trains
    • B61L25/026—Relative localisation, e.g. using odometer
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance
    • G01P3/66—Devices characterised by the determination of the time taken to traverse a fixed distance using electric or magnetic means

Definitions

  • PROXIMITY SWITCH METHOD FOR OPERATING SUCH AS WELL AS ARRANGEMENT AND EXPERIENCE FOR MONITORING A TRACK SECTION
  • the invention relates to a proximity switch, a method for operating such a switch and an arrangement and a method for monitoring a track section.
  • Proximity switches have long been known, in particular in the form of inductive proximity switches for use as so-called wheel sensors, e.g. from DE 23 26 089 A1, DE 32 34 651 A1 and DE 33 13 805 A1. They comprise at least one sensor element, typically in the form of an AC-powered oscillating circuit coil, which responds to a relative movement between the sensor element and a metal object, e.g. a railway wheel rolling past the sensor element, and triggers a pulse which is used, e.g. for counting or for triggering certain control signals can. If the sensor element is an AC-powered oscillating circuit coil, also known as a response coil, this is typically connected to a capacitor to form an L-C oscillating circuit and is part of a quiescent current monitoring circuit. If a metallic object moves through the electromagnetic field of the coil, the electrical behavior of the monitoring circuit changes, so that counting or control pulses, for example, can then be generated in a manner known per se via corresponding trigger circuits.
  • AC-powered oscillating circuit coil
  • a typical application of proximity switches is the monitoring of track sections of a rail system, using proximity switches arranged at the beginning and at the end of a track section to be monitored to count whether the number of tracks in the track section retracted wheels (and thus also the corresponding number of axles of a rail vehicle, which is why in the railway sector one typically does not speak of a wheel but of an axle count) corresponds to the number of wheels or axles that have been pulled out of the track section, in order to then assign the corresponding track section to a to be able to report to the higher-level controller as free or occupied.
  • a proximity switch has two sensor elements arranged one behind the other, the direction of travel and possibly even the speed of travel can also be determined from the order in which the sensor elements respond.
  • Inductive proximity switches of the type mentioned have proven themselves in practice for many years, but the increasing density of rail traffic, especially public transport in metropolitan areas, where e.g sensors with you. If a track that is actually free is reported as occupied, this can result in massive traffic disruptions. Of course, it can have catastrophic effects if an actually occupied track section is reported as free, which is why the standard design of corresponding systems is always such that, in case of doubt, an actually free track section is reported as occupied rather than erroneously releasing an occupied track section.
  • DE 199 15 597 A1 proposes a wheel sensor with two oscillating circuit coils fed with alternating current, each coil consisting of two coil parts which have a common winding and whose individual windings are guided around two coil centers in the form of a figure eight when viewed from above, which advantageously allows to suppress induced interference voltages and to achieve a particularly high level of immunity to interference from electromagnetic interaction with the eddy current brakes used in many rail vehicles when they work in the detection range of the coils. If, in the case of the known proximity switches with two sensor elements, i.e.
  • a track section is considered occupied if at a certain point in time more axles have entered it than exited, while a sensor element is said to be occupied if there is a detectable object in the detection range of the sensor element sensor element is located or the sensor element incorrectly indicates that a detectable object is located in its detection range due to a fault.
  • a track section is considered free at a certain point in time if the same number of axles have moved out of it as previously moved into it, while a sensor element is said to be in a free state if there is no detectable object in the detection range of the sensor element or that Sensor element incorrectly indicates that there is no detectable object in its detection range due to a malfunction.
  • DE 196 28 884 A1 proposes a proximity switch with three micro-power pulsed radar elements serving as sensor elements, whose detection ranges partially overlap and whose signals are evaluated in the form of a "majority decision" in such a way that an occupied or free message only occurs when at least two of the three sensor elements output an occupied or a free signal.
  • the occupancy reports are then used in a manner known per se to generate counting pulses, so that by using a plurality of proximity switches it can be counted how many wheels and thus how many train axles have entered and exited a track section.
  • the invention is based on the object of specifying a proximity switch which has been improved taking into account the above-mentioned problems, as well as a method for operating the same.
  • the invention is also based on the object of specifying an arrangement and a method for monitoring a track section using a proximity switch according to the invention.
  • the object is achieved by a proximity switch having the features of claim 1 and a method for operating a proximity switch having the features of claim 6.
  • the independent claims 8 and 10 relate to an arrangement and a method for monitoring a track section.
  • the corresponding subclaims relating to advantageous configurations and developments.
  • the invention allows a proximity switch to be configured compactly and inexpensively in such a way that there is a high level of operational reliability and it can be easily determined whether one of the sensor elements installed in the proximity switch is defective. This increases what is known as the availability of an arrangement, such as in particular an arrangement for monitoring a track section with regard to the presence of a rail vehicle in the track section, ie if a sensor element fails, the system is still available.
  • the invention makes it possible to reliably determine the direction of movement in which an object is moving past the proximity switch, even when a sensor element has failed.
  • a proximity switch comprises a first sensor element with a first detection range for detecting an object moving through the first detection range, a second sensor element with a second detection range for detecting an object moving through the second detection range, and a third sensor element with a third detection range for detecting a moving object through the third detection area, wherein the detection areas of the three sensor elements are spatially distributed in such a way that an object moving in a specific direction through the detection areas enters the detection areas one after the other and these in the same order in which it entered them is, leaves again, with there being an overlapping area in which the detection areas overlap in such a way that an object located there is detected by all three sensor elements.
  • the proximity switch also includes an evaluation logic with a state machine for detecting the direction of movement and for identifying a defective sensor element.
  • the evaluation logic can be arranged together with the sensor elements in a common housing or it can be separated from the sensor elements and, for example, be part of a higher-level controller.
  • the proximity switch therefore does not have to be a single component. Rather, the proximity switch is implemented as a functional unit through the interaction of sensor elements and evaluation logic.
  • the evaluation logic and in particular the state machine can be implemented, for example, with the aid of programmable logic controllers, logic gates, flip-flops or relays.
  • a register for storing states, a first logic unit that determines transitions from one state to another, a second logic unit that is responsible for outputting the state, and a clock generator or a delay element can be used in a manner known to those skilled in the art , to be able to advance/distinguish between previous, current and next states.
  • the state machine can also be implemented in software, for example as an event-controlled finite machine or virtual finite machine.
  • the invention advantageously allows the person skilled in the art to choose the most favorable implementation depending on the application and local conditions.
  • the detection areas each have the same width, which makes it easy to evaluate corresponding sensor signals, for example with regard to the speed of an object moving through the detection area.
  • At least one further sensor element is provided, the detection area of which can, but does not have to, overlap with one of the other detection areas, which enables additional information to be obtained.
  • the sensor elements work inductively and each comprise at least one resonant circuit coil fed with alternating current.
  • the sensor elements are arranged in a common housing in such a way that, when the housing is installed as intended, their detection areas lie one behind the other at a location to be monitored in the expected direction of movement of an object to be detected.
  • each sensor element has an occupancy status, which indicates that an object is in the detection range of the respective sensor element is located, and a free state, which indicates that there is no object in the detection range of the respective sensor element, is assigned, the occupied and free states of the three sensor elements being mapped by the state machine in eight switch states and the sequence in transitions from one switch state to another and is evaluated to determine the direction of movement of the object and, if necessary, to identify a defective sensor element.
  • the switch states change, cost-effectively and reliably, even if a sensor element is defective and, for example, is permanently in an occupied or free state.
  • the defective element can be easily identified.
  • a free message is generated when none of the sensor elements or only one of the sensor elements detects the presence of an object, and an occupancy message is generated when at least two sensor elements detect the presence of an object.
  • these free or occupied reports can then be used in a manner known to those skilled in the art to generate counting pulses.
  • the sensor elements when the sensor elements are arranged such that an object moving in a specific direction through the detection areas first enters the detection area of the first sensor element, then enters the detection area of the second sensor element and then enters the detection area of the third sensor element , generates an error message if only the second sensor element or only the first and third sensor elements detect the presence of an object in the corresponding detection area.
  • At least one inventive proximity switch is arranged at the beginning and at the end of the track section, both of which are communicatively coupled to a higher-level controller.
  • a higher-level controller At the beginning and at the end of the track section there can also be at least two according to the invention Proximity switches are provided and coupled in such a way that each proximity switch provided at the beginning of the track section forms an independent counting circuit with each proximity switch provided at the end of the track section.
  • FIG. 1 shows a highly schematic plan view of a proximity switch according to the invention with three sensor elements.
  • FIG. 2 shows a diagram of the response of three sensor elements when a metal train wheel drives past.
  • FIG. 3 shows a state machine that models the behavior of a proximity switch according to the invention.
  • FIG. 1 shows a highly schematized top view of a proximity switch, denoted in its entirety by 10, with three sensor elements S1, S2 and S3 arranged in a housing 12.
  • the housing 12 is shown here as if one could see the three sensor elements S1, S2 and S3 in a plan view, which can actually be the case, but does not have to be.
  • the sensor elements are AC-powered resonant circuit coils, it is important that the housing does not form a Faraday cage, so that the sensor elements can interact with metallic objects moving past. Typically, these are those to be detected by means of the sensor elements objects around wheels of rail vehicles, and in Fig. 1 a section of rail 14 is shown.
  • the sensor elements S1, S2 and S3 are arranged in the housing in such a way that the detection areas 16, 18, 20 of the individual sensor elements shown here in a highly schematic form and only for basic understanding, i.e. those spatial areas within which the sensor elements S1, S2 and S3 detect the presence of an object, typically a wheel of a rail vehicle, are spatially offset from one another in such a way that an object moving in a specific direction through the detection areas enters the different detection areas one after the other and then leaves them again in the same order.
  • the sensor element S1 has the detection area 16 shown by the dashed line
  • the sensor element S2 has the detection area 18 shown by the dotted line
  • the sensor element S3 has the detection area 20 shown by the dash-dotted line.
  • the detection areas 16, 18 1 and 20 overlap in an overlap area 22 hatched in the manner of a grid, and an object located there is detected by all three sensor elements S1, S2 and S3.
  • the numbering of the detection areas is arbitrary and is only used for illustration. Depending on the design of the sensor elements, it is theoretically possible to have the detection areas cross, arranging the sensor elements such that a sensor element on the right in the drawing covers a central area in the drawing and a central sensor element covers the right area. It is not important which sensor element covers which detection area, but that it is known in which order an object moving in a certain direction enters the detection area. Finally, it is also not important that the sensor elements are separate components, but rather that there are separate, partially overlapping detection areas. In this sense, three corresponding sensor fields realized in a single sensor can also be regarded as "sensor elements".
  • the sensor elements S1, S2 and S3 interact with an evaluation logic 24, which evaluates signals generated by the individual sensors, eg voltage changes, and includes a state machine for detecting the direction of movement and for identifying a defective sensor element.
  • the evaluation logic is arranged in the housing 12 together with the sensor elements. However, it can also be separated from the sensor elements and, for example, be part of a higher-level controller.
  • the wheel continues to move in the same direction, it leaves the detection areas in the same order in which it entered the detection areas, i.e. in the example in Fig. 1 it first leaves the detection area 16 of the sensor element S1, then the detection area 18 of the Sensor element S2 and finally the detection area 20 of the sensor element S3.
  • This advantageous arrangement of the detection areas makes it possible, as will be seen in more detail from the following description, to reliably distinguish between incorrect reports and actual events and also to ensure that the proximity switch functions even if one of the sensor elements has a malfunction.
  • FIG. 2 shows diagrammatically the time curves 26, 28 and 30 of signals from the three sensor elements S1, S2 and S3, thus forming a diagram of the response of the three sensor elements from FIG. 1 when a metal train wheel passes by .
  • "Signal progression" here means the change in a specific measured variable over time, and accordingly the time is plotted in any desired unit on the abscissa. Above are dimensionless and on top of each other for ease of understanding the signal curves 26, 28 and 30 are shown offset.
  • the measured variable can be, for example, a current through the respective coil, which then does not rise or fall in a strictly rectangular manner, as shown in FIG. 2, but rather sinusoidally.
  • each sensor element S1, S2 and S3 has two states, namely a so-called occupied state, which indicates that an object is in the detection area of the respective sensor element (S1, S2, S3) and a free state, which indicates that there is no object in the detection range (16, 18, 20) of the respective sensor element, with an occupied state being indicated below and in particular in Fig. 3 by 1 and an idle state is represented by 0, and that the states of the respective sensor elements change suddenly at certain points in time.
  • a sensor element has a state
  • specific information can be taken from the signal it outputs, which can be analog or digital, namely whether an object is in the detection range of the sensor element is (state 1) or not (state 0).
  • This information does not always have to be correct: due to a defect or a fault, it can happen that sensor elements "display" incorrectly, i.e. permanently go into an occupied or free state, whereby the invention - as explained in detail below - advantageously makes it possible to recognize such "false states” and still determine the direction of movement of an object and even identify the faulty sensor element.
  • the three sensor elements S1, S2 and S3 are arranged such that an object moving from left to right in FIG. 1, e.g. a train wheel, first enters the detection range 16 of the first sensor element S1 , which takes place at time T1 shown in FIG. 2, so that the signal generated by sensor element S1 and thus signal curve 26 changes. The object then moves further and enters the detection range 18 of the second sensor element S2 at time T2, as a result of which the signal curve 28 also changes. If this object then continues to move in the same direction, it finally enters the detection range 20 of the third sensor element S3 at time T3, as a result of which the signal profile 30 also changes.
  • the detection areas are arranged such that they spatially overlap, there are also temporal overlapping areas for objects moving in one direction, in particular a temporal overlapping area 32 in which the object is simultaneously detected by all three sensor elements.
  • a temporal overlap region 34 the object is detected only by the first and second sensor element, in a temporal overlap region 36 only by the second and third sensor element.
  • the object continues to move in the specific direction, it leaves the detection range of sensor element S1. It is then still in the temporal overlap area 36 and is correspondingly detected by the two sensor elements S2 and S3. At time T5 it leaves the detection range of the second sensor element S2 and is only detected by sensor element S3. Finally, at time T6, the object also leaves the detection range of the third sensor element S3.
  • the proximity switch comprises three sensor elements, as in the example shown, which can each be in an occupied and free state
  • switch states there are eight possible combinations of the states, referred to below as switch states, which are mapped by the state machine 40 shown in FIG. 3 .
  • Each switch state 41, 42, ..., 48 therefore corresponds to a combination of the states in which the three sensor elements S1, S2 and S3 of the proximity switch are located at a specific point in time, with Fig. 3 being read as follows: In the so-called Basic state 41, if there is no object in any of the three detection ranges of the three sensor elements of the proximity switch (or one of the sensor elements incorrectly indicates that no object is detected due to a fault), all sensor elements are in state 0.
  • the detection areas are arranged in such a way that an object moving from left to right in Fig. 1 first enters the detection area 16 of the sensor element S1, then into the detection area 18 of the sensor element S2 and finally into the detection area 20 of the sensor element S3 and then leaves the corresponding detection areas again in the same order, i.e. first from the detection area 16 of the sensor element S1, then from the detection area 18 of the sensor element S2 and finally exits the detection area 20 of the sensor element S3.
  • This case corresponds to a clockwise rotation in the state machine of FIG. 3 through the switch states 41, 42, 43, 44, 45, 46 shown in the outer circles.
  • the state machine 40 for evaluating the information actually supplied by the individual sensor elements can be implemented in the form of software, but also as a hardware circuit.
  • S2 1
  • S2 1
  • S2 1
  • S3 1).
  • the switch state 47 with S1 0
  • S2 1
  • the detection areas are arranged according to the invention in such a way that objects moving in one direction enter the individual detection areas one after the other and leave them again one after the other in the same order, it follows that there is not just one overlapping area, in where all three detection areas overlap, but also an overlap area where the first and second detection areas overlap, and an overlap area where the second and third detection areas overlap, while it is impossible for an object to be detected only in the detection area of the Sensor element S2, which is in the example between the detection areas of the sensor elements S1 and S3.
  • Switch state 47 is therefore impossible and is recognized as an error, so that a corresponding error message can be generated and sent to a higher-level control unit.
  • the switch state 48 with S1 1
  • S2 0
  • S3 1 impossible because the object in the arrangement of the detection areas according to the example must also be in the detection area of the second sensor element when it is in the overlapping area of the detection areas of the first and third sensor elements.
  • This signal aspect is also recognized as an error and can be reported to a higher-level control unit.
  • the abbreviation “iO” means “okay”
  • the abbreviation “FR LR” means “direction of travel from left to right” (i.e. with reference to Fig. 3 a movement of the object past the proximity switch from left to right)
  • the abbreviation “FR RL” means “direction of travel from right to left” (that is, with reference to FIG. 3, the object moves past the proximity switch from right to left).
  • the state machine allows, from the sequence of the switch states, even if a sensor element should be in a permanent occupied or free state due to a defect, to clearly detect the direction of travel, to identify the defective sensor element and even to identify the type of the defect (wrongly assigned, wrongly free). This also enables appropriate notifications for To generate maintenance and repair teams so that they then know exactly what needs to be repaired in a proximity switch.
  • the object to be detected is a wheel of a rail vehicle that moves past the proximity switch either from left to right or from right to left if this is installed as intended and the sensor elements are practical lie horizontally next to each other. If the exact time of a status change is recorded, since the distances between the detection areas are known, the relative speed at which the object and proximity switch move past one another can also be determined, although in most applications it will be the case that only the object moves , but the proximity switch is installed in a fixed position.
  • a proximity switch according to the invention also allows the signal images to be evaluated in a particularly reliable manner and used, for example, to generate counting pulses and, by arranging at least one proximity switch at the beginning and one proximity switch at the end of a track section, to monitor the track section with regard to the presence of a rail vehicle .
  • the signal images can be evaluated in a manner known per se according to a "2 out of 3" evaluation: Since each signal image contains three states, the evaluation always leads to an operationally reliable result even if the sensor element is defective. If only one of the three sensor elements indicates the presence of an object, the signal reported by the proximity switch to a higher-level controller is still evaluated as free.
  • All switch states 41, 42, 46 and 47 in the upper half A of FIG. 3 delimited by the broken line correspond to a free message
  • all switch states 43, 44, 45 and 48 shown in the lower half B of FIG. 3 correspond to an occupancy message.
  • a so-called “pendulum” can also be achieved, in which a wheel does not completely run over the switch, in the example but only in the detection ranges of the sensor elements S1 and S2 and then rolls back again, distinguished from a complete overrun of the sensor and a "in” or “count out”, ie a count of whether a wheel has entered or left a track section, only with complete crossing of the switch.
  • a comparison is then made as to whether the number of counted wheels matches the number of counted wheels. If this is the case, it can be assumed that a rail vehicle that has entered the track section has left it again, ie the corresponding track section is free.
  • the proximity switch offers extremely high reliability. Nevertheless, if additional redundancy is desired, e.g. These additional sensor elements can be integrated into the proximity switch. It is also possible, for example, to arrange two proximity switches according to the invention at the beginning and at the end of a track section to be monitored and each of the two proximity switches located at the beginning with each of the proximity switches arranged at the end of the track section to form an axle counting circuit consisting of a proximity switch at the beginning and a proximity switch to couple at the end of the track section.
  • first, second, third detection area or first, second and third sensor element are arbitrary and instead of the arrangement shown, in which the second sensor element is located between the first and the third sensor element, other arrangements can also be used can be met. It is important that the detection areas differ in terms of their beginning and end, i.e. an object does not leave or enter the detection areas of two sensor elements at the same time, but that all three are in a common overlapping area overlap.
  • the sensor elements also do not have to work inductively, although inductive sensor elements have proven particularly effective for applications in the railway sector and are therefore used in a preferred embodiment of the invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Abstract

L'invention concerne un détecteur de proximité (10) doté d'un élément sensible (S1) comportant une première zone de détection (16) pour détecter un objet se déplaçant à travers la zone de détection (16), d'un deuxième élément sensible (S2) comportant une deuxième zone de détection (18) pour détecter un objet se déplaçant à travers la deuxième zone de détection (18) et d'un troisième élément sensible (S3) comportant une troisième zone de détection (20) pour détecter un objet se déplaçant à travers la troisième zone de détection (20), les zones de détection (16, 18, 20) des trois éléments sensibles (S1, S2, S3) étant disposées dans l'espace de sorte qu'un objet se déplaçant à travers les zones de détection dans une direction déterminée entre successivement dans les zones de détection (16, 18, 20) et qu'il en sorte dans le même ordre, une zone de chevauchement étant formée dans laquelle les zones de détection (16, 18, 20) se chevauchent de manière qu'un objet qui s'y trouve est détecté par les trois éléments sensibles (S1, S2, S3), et une logique d'évaluation (24) munie d'un automate d'état (40) destiné à détecter le sens de déplacement et à identifier un élément sensible défectueux étant prévue.
PCT/DE2021/100860 2020-10-27 2021-10-27 Détecteur de proximité, procédé pour faire fonctionner un détecteur de proximité de ce type, et système et procédé de surveillance d'un tronçon de voie WO2022089689A1 (fr)

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Application Number Priority Date Filing Date Title
EP21827581.6A EP4237311A1 (fr) 2020-10-27 2021-10-27 Détecteur de proximité, procédé pour faire fonctionner un détecteur de proximité de ce type, et système et procédé de surveillance d'un tronçon de voie
DE112021005736.7T DE112021005736A5 (de) 2020-10-27 2021-10-27 Näherungsschalter, Verfahren zum Betreiben eines solchen sowie Anordnung und Verfahren zur Überwachung eines Gleisabschnittes

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DE102020128227 2020-10-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115140118A (zh) * 2022-07-15 2022-10-04 北京全路通信信号研究设计院集团有限公司 一种计轴方法及系统

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DE3234651A1 (de) 1982-09-18 1984-05-10 Dr. H. Tiefenbach Gmbh & Co, 4300 Essen Schiene mit einem induktiven schienenschalter
DE3313805A1 (de) 1983-04-15 1984-10-25 Siemens AG, 1000 Berlin und 8000 München Annaeherungsschalter fuer das eisenbahnwesen
DE19628884A1 (de) 1995-07-20 1997-01-23 Union Switch & Signal Inc Einrichtung und Verfahren zum Signalisieren des Vorhandenseins eines Schienenfahrzeugs auf einem Satz beabstandeter Schienen
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WO2021013610A1 (fr) * 2019-07-23 2021-01-28 Siemens Mobility GmbH Dispositif de capteur pour un ensemble de détection et d'analyse d'une roue d'un véhicule déplacée le long d'une voie, en particulier le long d'une voie ferrée

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