EP4265503A1 - Aide à la montée avec commutateur de proximité à point de commutation réglable - Google Patents

Aide à la montée avec commutateur de proximité à point de commutation réglable Download PDF

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Publication number
EP4265503A1
EP4265503A1 EP23158517.5A EP23158517A EP4265503A1 EP 4265503 A1 EP4265503 A1 EP 4265503A1 EP 23158517 A EP23158517 A EP 23158517A EP 4265503 A1 EP4265503 A1 EP 4265503A1
Authority
EP
European Patent Office
Prior art keywords
proximity sensor
detection object
tread surface
distance
aid
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.)
Pending
Application number
EP23158517.5A
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German (de)
English (en)
Inventor
Christoph Theis
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.)
Bode Die Tuer GmbH
Original Assignee
Bode Die Tuer 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 Bode Die Tuer GmbH filed Critical Bode Die Tuer GmbH
Publication of EP4265503A1 publication Critical patent/EP4265503A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
    • B61D23/00—Construction of steps for railway vehicles
    • B61D23/02—Folding steps for railway vehicles, e.g. hand or mechanically actuated
    • B61D23/025—Folding steps for railway vehicles, e.g. hand or mechanically actuated electrically or fluid actuated

Definitions

  • the invention relates to a boarding aid for a vehicle, in particular for a local and long-distance public transport vehicle, having a measuring device for detecting a load on the boarding aid.
  • Access aids in the sense of the invention are primarily accessible sliding steps, step plates or ramps, but also retractable steps.
  • Detection is carried out, for example, using a spring-loaded step plate that lowers when passengers enter. This lowering is detected, for example, by a switch or contact, which can then output a signal to the door control and thus prevent retraction.
  • a switch or contact which can then output a signal to the door control and thus prevent retraction.
  • these systems are prone to errors and often only function inadequately over their service life.
  • inductive proximity sensors are installed in the area of the tread surface, which register the movement of the tread surface and output a signal to interrupt the retraction if a corresponding movement of the tread surface is registered.
  • the proximity sensor is fixed to the movable tread surface and interacts with a metallic detection object which is arranged in a stationary manner below the tread surface. If a defined triggering distance is reached, the proximity sensor outputs a switching signal as a triggering signal and prevents retraction.
  • the tread surface is finished mounted access aid is loaded with a reference mass, for example 120 kN.
  • the tread moves with the proximity sensor in the direction of the detection object and remains in a trigger position. Due to manufacturing tolerances, the distance between the detection object and the proximity sensor is never exactly the same, which is why this often has to be corrected.
  • the position of the detection object in the direction of the proximity sensor is designed to be changeable; for example, the detection object can be moved in the direction of or away from the proximity sensor using a spring-loaded screw. In this way, the distance is set that causes the trigger value stored in the proximity sensor and leads to a trigger signal.
  • proximity sensors are fundamentally sensible and effective, but this makes the structure of the boarding aid more complicated and the setting and adjustment process described is relatively time-consuming.
  • the object of the present invention is to create an boarding aid with a measuring device for detecting a load on a tread surface of the boarding aid, the structure of which is as simple and inexpensive as possible. Maintenance and repair should also be quick and easy. Furthermore, the object of the present invention is to propose a simple and reliable adjustment method for setting a trigger value of a loaded step.
  • the object is achieved by an boarding aid for a vehicle, in particular for a local and long-distance public transport vehicle, with the features of claim 1.
  • the boarding aid has a tread and a measuring device for detecting a load on the tread, the measuring device being formed by a proximity sensor and a detection object and the distance between the proximity sensor and the detection object changing due to loading on the tread and the detection object from a certain distance can be detected by the proximity sensor.
  • the proximity sensor is formed by a capacitive proximity sensor with an individually adjustable switching point, the proximity sensor being designed to be programmable in such a way that its triggering value can be set in a definable triggering position in relation to the position of the detection object.
  • An adjustment method according to the invention for setting a trigger value of a loaded step results from the independent method claim.
  • An inductive proximity sensor (also proximity switch, initiator, proximity switch, proximity sensor, position sensor) is a sensor that can detect non-contact, electrically conductive, especially metallic objects when approached and provides a binary signal, "object detected/not detected”.
  • Inductive proximity switches work without contact; they detect metallic conductive objects that move in their measuring field. The way it works is based on the attenuation of a magnetic field generated by the sensor. Inductive sensors work with an open coil that generates the required magnetic field, which is changed by the approaching object. Such proximity sensors thus enable completely wear-free measurement of distances, distances or speeds.
  • a significant advantage of the invention is that manufacturing tolerances of the boarding aid do not have to be compensated for by physical changes to the boarding aid or measuring device, but rather through changes in the software of the proximity sensor. Manufacturing tolerances are, so to speak, accepted and saved as the real actual state of the triggering distance set by the reference mass. This requires that the proximity sensor is able to learn or be programmed accordingly.
  • the setting and adjustment process before putting the boarding aid into operation includes, as is already known from the prior art, loading the tread surface with a minimum reference mass, which should cause a trigger value in the proximity sensor, for example 120 kN.
  • the tread surface is moved into a trigger position by the reference mass.
  • it is no longer necessary to adjust the position of the detection object in such a way that a trigger value stored in the proximity sensor is established. Rather, it registers Proximity sensor inductively detects the real value now present in the trigger position, which is stored as a future trigger value in the proximity sensor.
  • the invention therefore has the significant advantage that neither the proximity sensor nor the detection object need to be designed to be able to change their position in relation to installation and adjustment. This significantly simplifies the structure and reduces the associated costs. It is also possible to make changes during operation, e.g. B. by changing the spring force or due to wear in that only the trigger value has to be adjusted in the software, a new adjustment of components and adjustment of components is no longer necessary.
  • the proximity sensor can preferably no longer be assigned to the movable tread surface, but rather installed stationary to it. It is advisable for the proximity sensor to be positioned vertically below the tread surface.
  • the detection object is assigned to the tread surface and moves relative to the fixed proximity sensor.
  • the proximity sensor can also be arranged in a horizontal plane laterally to the detection object and can detect an approximately vertical movement of the detection object by lowering the tread surface using an inclined detection surface.
  • it can be provided that the detection object moves towards the proximity sensor when the tread surface is loaded and away from it when the load is relieved.
  • the proximity sensor can even be arranged above the detection object. Even then, the detection object should move towards the proximity sensor when the tread surface is loaded and away from it when the load is relieved.
  • the detection object can advantageously be formed by the tread surface itself if it is designed to be sufficiently metallically conductive.
  • a component can be attached to the tread surface that acts as a detection object, for example a metal plate.
  • This can preferably be arranged on the side of the tread surface facing the proximity sensor, but one is also theoretically possible Arrangement on the other side of the tread surface, for example the walkable side.
  • the proximity sensor measures through the non-conductive tread surface underneath and detects the metal plate on top.
  • other objects can also be provided at a suitable position.
  • FIG. 1 a usual boarding aid, designed as a sliding step 20, is shown.
  • the sliding step 20 is located below a door opening 22 and has an accessible step surface 24.
  • the sliding step 20 makes it easier to get in and out of the vehicle.
  • the sliding step 20 is arranged in a box below the door opening 22 and can be extended out of it if necessary.
  • the box can be closed by a flap 26 shown when the sliding step 20 is retracted.
  • a flap 26 is often not present in other designs
  • a measuring device 28 is provided which can detect the presence of passengers or, for example, luggage.
  • Figure 2 shows such a measuring device 28 according to the prior art.
  • This is arranged in an access aid or a sliding step 20 and essentially consists of a proximity sensor 30 and a detection object 32.
  • the proximity sensor 30 is arranged below the step surface 24 and can be moved with it.
  • the detection object 32 on the other hand, is fixed in place.
  • the proximity sensor 30 approaches the detection object 32. From a certain proximity, the proximity sensor 30 registers the detection object 32 and thereby signals a load on the tread surface 24.
  • This position is referred to as the trigger position, the distance between the proximity sensor 30 and the detection object 32 in The trigger position is marked as trigger distance 34.
  • a spring 36 can be seen, which counteracts the load on the tread surface 24.
  • the tread surface 24 is subjected to a defined mass, which moves the tread surface in the direction of the detection object 32. This simulates a passenger stepping on the tread surface 24. Due to manufacturing tolerances, the distance between the detection object 32 and the proximity sensor 30 is not always the same with the same defined mass. For this reason, an adjusting screw 36 is provided with which the detection object 32 can be brought into the position in which the proximity sensor 30 outputs a signal when loaded with the defined mass. This setting is laborious; the adjustability of the detection object 32 requires an appropriate design and a large number of components.
  • the sliding step 20 has a trough-shaped frame 38 in which the walkable step surface 24 is mounted and in which it can move up and down.
  • the representation of the trough-shaped frame 38 is only to be understood as an example; it is not necessary for the invention in this form.
  • the proximity sensor 30 is arranged in a stationary manner and its position relative to the tread surface 24 cannot be changed.
  • the tread surface 24 can itself be designed as a recognition object 32, in the present case but a metal plate 40 is provided, which is arranged below the tread surface 24 on the side facing the proximity sensor 30.
  • Figure 3 shows the embodiment according to the invention in an unloaded state, whereby a basic distance 42 has been set between the metal plate 40 and the proximity sensor 30.
  • Figure 4 shows the loaded state of the tread surface 24.
  • a reference mass 44 rests on the tread surface 24 and presses it in the direction of the proximity sensor 30.
  • the distance between the proximity sensor 30 and the metal plate 40 has reduced and the trigger distance 34 has been set.
  • a change in the distance due to manufacturing tolerances between the metal plate 40 or the detection object 32 and the proximity sensor 30 is not necessary; rather, the measured value registered by the proximity sensor 30, which results from the triggering distance 34, is registered and stored. This value will serve as the trigger value in the future.
  • the invention is not limited to the exemplary embodiment described, but rather also includes other possible applications.
  • the basic principle of the measuring device is also suitable for similar areas of application in which a defined distance between two objects moving relative to one another is to be registered and stored.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
EP23158517.5A 2022-04-19 2023-02-24 Aide à la montée avec commutateur de proximité à point de commutation réglable Pending EP4265503A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022109447.2A DE102022109447A1 (de) 2022-04-19 2022-04-19 Zustiegshilfe mit Näherungsschalter mit einstellbarem Schaltpunkt

Publications (1)

Publication Number Publication Date
EP4265503A1 true EP4265503A1 (fr) 2023-10-25

Family

ID=88069662

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23158517.5A Pending EP4265503A1 (fr) 2022-04-19 2023-02-24 Aide à la montée avec commutateur de proximité à point de commutation réglable

Country Status (2)

Country Link
EP (1) EP4265503A1 (fr)
DE (1) DE102022109447A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0066748A1 (fr) * 1981-06-05 1982-12-15 Duewag Aktiengesellschaft Véhicule ferroviaire, notamment tramway
DE19801916B4 (de) * 1997-01-29 2006-10-12 Hiss, Eckart, Dr. Überwachungsvorrichtung
EP2975358A1 (fr) * 2014-07-16 2016-01-20 Zöller-Kipper GmbH Dispositif de marchepied

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0066748A1 (fr) * 1981-06-05 1982-12-15 Duewag Aktiengesellschaft Véhicule ferroviaire, notamment tramway
DE19801916B4 (de) * 1997-01-29 2006-10-12 Hiss, Eckart, Dr. Überwachungsvorrichtung
EP2975358A1 (fr) * 2014-07-16 2016-01-20 Zöller-Kipper GmbH Dispositif de marchepied

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Publication number Publication date
DE102022109447A1 (de) 2023-10-19

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