U.S. patent application number 12/879383 was filed with the patent office on 2012-03-15 for rail vehicle with trapping protection apparatus.
Invention is credited to Matthias Ebert, Bjorn Heinrichs.
Application Number | 20120060720 12/879383 |
Document ID | / |
Family ID | 45805382 |
Filed Date | 2012-03-15 |
United States Patent
Application |
20120060720 |
Kind Code |
A1 |
Ebert; Matthias ; et
al. |
March 15, 2012 |
Rail Vehicle with Trapping Protection Apparatus
Abstract
A rail vehicle with a contactlessly operating trapping
protection apparatus in a door area is provided. The trapping
protection apparatus has an inner and an outer contactless sensor,
each sensor detecting obstructions in the door area. Further, a
control device for controlling a door movement of a door of the
rail vehicle is provided. The control device is configured such
that, when only the inner sensor is interrupted, the door is moved
further in the closing direction while, when the outer sensor is
interrupted, a closing movement of the door is stopped.
Inventors: |
Ebert; Matthias; (Konigs
Wusterhausen, DE) ; Heinrichs; Bjorn; (Willich,
DE) |
Family ID: |
45805382 |
Appl. No.: |
12/879383 |
Filed: |
September 10, 2010 |
Current U.S.
Class: |
105/329.1 |
Current CPC
Class: |
E05Y 2800/242 20130101;
E05Y 2900/51 20130101; B61D 19/026 20130101; E05Y 2800/00 20130101;
E05Y 2800/40 20130101; E05Y 2800/21 20130101; E05F 2015/435
20150115; E05Y 2400/44 20130101 |
Class at
Publication: |
105/329.1 |
International
Class: |
B61D 19/02 20060101
B61D019/02; B61D 1/00 20060101 B61D001/00 |
Claims
1.-5. (canceled)
6. A rail vehicle, comprising: a contactlessly operating trapping
protection apparatus located in a door area of the rail vehicle,
wherein the trapping protection apparatus includes: an inner
contactless sensor, an outer contactless sensor, both sensors
detecting obstructions in the door area, a control device for
controlling a door movement when an obstruction occurs, wherein the
control device is configured such that, when only the inner sensor
is interrupted, the door is moved further in a closing direction
while, when the outer sensor is interrupted, a closing movement of
the door is stopped.
7. The rail vehicle as claimed in claim 6, wherein the control
device is configured such that the closing movement of the door is
stopped when first the inner sensor is interrupted, followed by the
outer sensor.
8. The rail vehicle as claimed in claim 6, wherein the control
device is configured such that the door is reversed after the
closing movement of the door has stopped.
9. The rail vehicle as claimed in claim 7, wherein the control
device is configured such that the door is reversed after the
closing movement of the door has stopped.
10. The rail vehicle as claimed in claim 8, wherein the control
device is configured such that a reversal of the door takes place
by a defined amount.
11. The rail vehicle as claimed in claim 8, wherein the control
device is configured such that the door is reversed completely.
12. The rail vehicle as claimed in claim 9, wherein the control
device is configured such that a reversal of the door takes place
by a defined amount.
13. The rail vehicle as claimed in claim 9, wherein the control
device is configured such that the door is reversed completely.
Description
FIELD OF INVENTION
[0001] The invention relates to a rail vehicle with a contactlessly
operating trapping protection apparatus in the door area.
SUMMARY OF INVENTION
[0002] A trapping protection apparatus such as this typically makes
use of a contactlessly operating sensor, such as a light grid,
whose output signal leads to a door which is currently in the
course of a closing movement being reversed, or the closing process
not being started or being delayed. The resultant reversal movement
is normally carried out completely, that is to say, after the
obstruction has been removed, the door closing process must be
carried out again from the start.
[0003] The operation of such trapping protection apparatuses has
the disadvantage that reversal movements that occur are frequently
assessed as being unnecessary when, for example, simply a random
interruption of the light grid by movement by one of the passengers
in the vicinity of the door leads to complete reversal of the
closing movement.
[0004] The reversal and closing movement that is required again
results in a longer stopping duration, that is to say this results
in more time being lost at train or tram stops.
[0005] An object of the claimed invention is to provide a rail
vehicle of the type mentioned initially where reversal movements of
the door occur less frequently.
[0006] This object is achieved in that the trapping protection
apparatus has an inner and an outer contactless sensor, in each
case for detecting an obstruction in the door area, and has a
control device for controlling a door movement when an obstruction
occurs, wherein the control device is designed such that, when only
the inner sensor is interrupted, the door is moved further in the
closing direction while, when the outer sensor is interrupted, a
closing movement of the door is stopped.
[0007] In this case, use is made of the fact that the selected
arrangement of an inner and an outer contactless sensor allows
conclusions to be drawn about a movement direction of a passenger
who is currently entering or leaving the rail vehicle. For example,
when only the inner sensor is interrupted while no interruption is
found in the outer sensor, it is considered to be unnecessary to
reverse the door. This door can instead be moved further in the
closing direction, in which case, if required, the movement can be
carried out at a slower closing rate than in the case of the
standard closing movement.
[0008] The control device is preferably designed such that, when
the inner sensor emits a signal first, followed by the outer
sensor, the closing movement of the door is interrupted.
[0009] The described situation occurs, for example, when a
passenger is leaving the rail vehicle through the door. In
situations such as this, a closing movement of the door must be
stopped.
[0010] It may be advantageous for the control device to be designed
such that, in situations in which a closing movement of the door is
stopped, the door is then reversed. This is possibly dependent on
the extent to which the closing movement has already been carried
out.
[0011] This decision process is carried out by the control device
(door controller) itself. The result is dependent on the door
enable signal and the vehicle speed.
[0012] The contactlessly operating sensor referred to here provides
the door controller with signals which are used as the basis to
control the door drive.
[0013] After the door has been stopped, the reversal can take place
by only a defined amount which, for example, allows a single person
to enter or leave the rail vehicle, allows the door to be opened
completely, or only stops the door movement.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] One exemplary embodiment of the invention will be explained
in more detail in the following text with reference to the drawing.
The single FIGURE shows a schematic view of a trapping protection
apparatus for the door area of a rail vehicle.
DETAILED DESCRIPTION OF INVENTION
[0015] As is illustrated in the FIGURE, a trapping protection
apparatus 1 comprises a control device 2 which is in each case
connected for signaling purposes to an inner sensor 3 and to an
outer sensor 4. By way of example, the two sensors 3, 4 may be in
the form of light grids which run substantially parallel to one
another in the door area.
[0016] The sensors 3, 4 each signal to the control device 2 the
detection of an obstruction in their sensor area, either of a
person entering or leaving the rail vehicle or of an object moving
into the detection area. On the basis of the signals received from
the sensors 3, 4, the control device 2 produces control signals for
a door drive 5, which controls a movement of one door of the rail
vehicle, in particular also its closing and reversal movement.
[0017] The operation of the door drive 5 by the control device 2
now depends on the signals generated by the sensors 3, 4. In this
case, a distinction is drawn between the following situations:
[0018] a) Only the inner sensor 3 signals the presence of an
obstruction: in this situation, it can be assumed that a person who
is already in the rail vehicle has inadvertently caused initiation
of the inner sensor 3, but does not wish to leave the rail vehicle.
In a situation such as this, it is possible to move the door
further in the closing direction, possibly at a reduced closing
rate. The door drive 5 is operated appropriately by the control
device 2.
[0019] b) The outer sensor 4 indicates the presence of an
obstruction: in this situation, there is no distinction between
whether the outer sensor is signaling the presence of an
obstruction exclusively or after response by the inner sensor 3. In
both situations, the closing movement of the door is stopped.
[0020] If required, the door can be reversed by a certain, defined
amount or else completely by suitable operation of the door drive 5
by the control device 2 after the door drive has been stopped. The
type of reaction of the door to a signal from the trapping
protection apparatus, such as stopping, partial or complete
reversal, is defined on the basis of the requirements of an
operator of the rail vehicle and the infrastructure, as well as the
vehicle state at the time of the signal, which is characterized,
for example, by door signals, the vehicle speed, etc. at that time.
The type of reaction can be configured separately for each vehicle
type. For example, in the case of a suburban railway where trains
arrive at short intervals at a station it is possible not to
completely reverse the door but either to stop it or to reverse it
by a small amount, in order to allow people who have been trapped
to be freed.
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