DE102018002273A1 - A method of operating a ground mobile vehicle and system for performing a method - Google Patents

Abstract

Method for operating a vehicle that can travel on a ground and system for carrying out a method, wherein a space area is monitored by means of a sensor, in particular the presence of objects in the area, wherein information is displayed on at least one projection screen by means of a transmission module of the vehicle the projection surface is a surface area of the floor and at least partially delimits the spatial area, in particular a surface area of the spatial area, wherein the projection surface is monitored for change by means of a camera, wherein information is transmitted to a computer, in particular depending on the result of the monitoring performed by the camera Control, the vehicle is forwarded

Description

The invention relates to a method for operating a vehicle movable on a ground and to a system for carrying out a method.

From the DE 10 2012 004 059 A1 For example, a system for producing a product and a method are known, wherein the system has a vehicle on which a display means is arranged.

From the DE 10 2013 222 137 A1 As the closest prior art, a camera arrangement for a motor vehicle is known.

From the DE 10 2007 022 524 A1 a motor vehicle is known.

From the US Pat. No. 6,285,778 B1 is a vehicle with round monitor known.

From the DE 102 40 227 A1 a method for operating a display device on a work machine is known.

From the DE 691 29 303 T2 a method for localization and identification is known.

The invention is therefore the object of developing a communication method in a vehicle.

According to the invention the object is achieved in the method according to the features indicated in claim 1 and in the system according to the features indicated in claim 12.

Important features of the invention in the method for operating a vehicle that can travel on a ground are that a space area is monitored by means of a sensor, in particular the presence of objects in the area of space,
wherein information is displayed on at least one projection surface by means of a transmission module of the vehicle,
wherein the projection surface is a surface area of the floor and at least partially delimits the spatial area, ie in particular is a surface area of the spatial area,
whereby the projection surface is monitored for change by means of a camera,
wherein, depending on the result of the monitoring carried out by means of the camera, information is forwarded to a computer, in particular control, of the vehicle.

The advantage here is that in a monitored area the information is projected. Thus, a data entry is made possible by touching the screen, without posing a danger from the vehicle. Because the vehicle is stopped upon detection of an object in the space area. So it is not a separate, for example, mechanical input means necessary but it is sufficient a visual display of information on the ground and a touch of the soil, so that the data input of the present invention created human-machine interface is simple and non-contact, in particular very hygienic.

In an advantageous embodiment, an operating state of the vehicle is determined and / or activated by the information. The advantage here is that the operating state of humans can be influenced without mechanical actuation and complex Menuführungen be realized.

In an advantageous embodiment, the projection surface is monitored by the camera for touching a pixel of the projection surface, in particular by a foot or shoe of a human,

in particular and dependent on the forwarding of the information is triggered. The advantage here is that the data input by touching the projection surface with shoe, foot or hand is executable.

In an advantageous embodiment, the same information is displayed on a further, spaced from the first projection screen projection surface as on the first projection surface,
wherein the further projection surface is likewise a surface area of the floor and at least partially limits the space area monitored by the sensor, in particular therefore a surface area of the spatial area. The advantage here is that the man-machine interface is even executable on opposite floor areas next to the vehicle.

Important features in the system for implementing one of the aforementioned methods are that the system has a vehicle that can travel on a ground, which has a transmission module that is set up to display information on a projection screen,
wherein the vehicle has a sensor for monitoring a space area which is partially bounded by the projection area,
wherein the vehicle has a camera for monitoring the projection surface,
wherein the vehicle has a computer which is connected to the transmission module, the sensor and the camera or an image evaluation unit connected to the camera for data transmission.

The advantage here is that a monitored space area is used for data display and data entry. Thus, the security is increased.

In an advantageous embodiment, the camera is connected to an image evaluation unit or has an image evaluation unit. The advantage here is that a recognition of the data input by touching by means of body part or garment is possible in a simple manner.

• - eine Lichtquelle, insbesondere eine polarisiertes Licht ausstrahlende Lichtquelle,
• - einen einzelne Pixel aufweisenden Flüssigkristall zur von einem Steuersignal abhängigen Drehung der Polarisationsrichtung
• - und ein Polarisationsfilter

auf. Von Vorteil ist dabei, dass die Projektionsfläche eine große Entfernung zum Sendemodul des Fahrzeugs aufweisen darf und somit eine Anzeige von Daten in großer Entfernung ermöglicht ist. Ebenso ist eine Dateneingabe in großer Entfernung in einfacher Weise ermöglicht.In an advantageous embodiment, the transmission module

• a light source, in particular a polarized light emitting light source,
• a single-pixel liquid crystal for the control signal dependent rotation of the polarization direction
• - and a polarizing filter

on. The advantage here is that the projection surface may have a long distance to the transmission module of the vehicle and thus a display of data is made possible at a great distance. Likewise, data entry at a great distance is made possible in a simple manner.

Further advantages emerge from the subclaims. The invention is not limited to the combination of features of the claims. For the skilled person, further meaningful combination options of claims and / or individual claim features and / or features of the description and / or figures, in particular from the task and / or the task posing by comparison with the prior art arise.

• In der 1 ist ein Sendemodul eines erfindungsgemäßen Fahrzeugs 8 in Seitenansicht schematisch gezeichnet.
• 2 zeigt einen Strahlengang eines Lichtstrahls 5 des Sendemoduls für ein erstes Pixel eines Flüssigkristalls des erfindungsgemäßen Fahrzeugs 8 in schematischer Darstellung.
• 3 zeigt einen Strahlengang eines Lichtstrahls 5 des Sendemoduls für ein zweites Pixel des Flüssigkristalls des erfindungsgemäßen Fahrzeugs 8 in schematischer Darstellung.
• In der 4 ist das erfindungsgemäße Fahrzeug 8 in Seitenansicht schematisch gezeichnet.
• 5 zeigt das erfindungsgemäße Fahrzeug 8 und vom Sendemodul erzeugte Projektionsflächen 9 in schematischer Draufsicht.

The invention will now be explained in more detail with reference to figures:

• In the 1 a transmission module of a vehicle 8 according to the invention is shown schematically in side view.
• 2 shows a beam path of a light beam 5 of the transmission module for a first pixel of a liquid crystal of the vehicle according to the invention 8 in a schematic representation.
• 3 shows a beam path of a light beam 5 of the transmission module for a second pixel of the liquid crystal of the vehicle 8 according to the invention in a schematic representation.
• In the 4 the vehicle 8 according to the invention is shown schematically in side view.
• 5 shows the vehicle 8 according to the invention and projection surfaces 9 produced by the transmission module in a schematic plan view.

This in 4 and 5 illustrated vehicle 8th , in particular a driverless transport vehicle, has at least one transmission module. The transmission module is set up an information on at least one projection screen 9 to project.

1 shows the transmission module of the vehicle 8th , The transmission module has a light source 1 , a lens 2 , in particular a collecting lens, the liquid crystal 3 , a linear polarizing filter 4 and a control means 10 for the liquid crystal 3 on.

Preferably, the light source 1 as a polarized light source 1 executed, the light source 1 generated linearly polarized light. Alternatively, another linear polarizing filter is between the light source 1 and the lens 2 arranged.

Preferably, the lens 2 designed as a lens system that has multiple lenses that the light of the light source 1 collect.

The liquid crystal 3 has individual pixels, each by means of the control means 10 are controllable. The individual pixels of the liquid crystal 3 are by means of the control means 10 controllable such that the polarization of linearly polarized light is rotatable by 0 ° or 90 °. This is done by the control means 10 a voltage to the respective pixel of the liquid crystal 3 created, which are the molecules of each pixel of the liquid crystal 3 aligns. Depending on the particular pixel of the liquid crystal 3 applied voltage is the polarization of the respective pixel of the liquid crystal 3 passing light by 0 ° or rotated by 90 °.

A ray of light 5 the light source 1 first crosses the lens 2 , then the liquid crystal 3 and then the polarizer 4 , then the light beam is onto a projection surface 9 projected.

The linearly polarized light of the light source 1 is parallel to the polarization of the linear polarizing filter 3 polarized. A ray of light 5 , which is a pixel of the liquid crystal 4 that happens undiluted, so happens completely the linear polarizing filter. A ray of light 5 , its polarization by means of a pixel of the liquid crystal 3 rotated by 90 °, is from the linear polarizing filter 4 completely absorbed.

2 shows the beam path of the light beam 5 from the light source 1 through a first pixel of the liquid crystal 3 , The first pixel is thereby from the control means 10 controlled in such a way that the polarization of the linearly polarized light of the light beam passing through the first pixel 5 rotated by 90 °. The light beam 5 which has passed through the first pixel becomes completely out of the linear polarizing filter 4 absorbed. A first pixel assigned first pixel 6 on the projection screen 9 appears dark.

3 shows the beam path of the light beam 5 from the light source 1 through a second pixel of the liquid crystal 3 , The second pixel is thereby from the control means 10 controlled in such a way that the polarization of the linearly polarized light of the light beam passing through the first pixel 5 is rotated by 0 °. The light beam 5 passing through the first pixel passes the linear polarizing filter 4 Completely. A second pixel associated with the second pixel 7 on the projection screen 9 appears bright.

Preferably, the transmission module has a control means 10 and at least two light sources 1 on, with each light source 1 one lens each 2 , a liquid crystal 3 and a linear polarizing filter 4 are assigned, which are arranged as described above. The control means controls 10 the pixels of the liquid crystals 3 identical, so that on at least two spaced-apart projection surfaces 9 next to the vehicle 8th two identical pieces of information are projected.

Preferably, in the beam path behind the linear polarizing filter 4 a beam splitter arranged, which the light beam 5 duplicated and on two spaced projection screens 9 projected next to the vehicle.

The vehicle 8th has a camera on at least one screen 9 is aligned.

The vehicle 8th also has at least one sensor with which a Raumberiech can be monitored. As soon as an object, such as a wall, a person or another object, is detected in the space, the traction drive, ie the traction drive, of the vehicle is slowed down or stopped. Thus, collisions are avoided or at least harmless.

The space area monitored by the sensor is at least also of the projection surface 9 limited.

Thus, the area is above the screen 9 monitored by means of the sensor.

The camera detects at least the projection screen 9 , Thus, data entry is enabled by an operator selecting an area, particularly the area of one of the imaged pixels (FIG. 6 . 7 ), touched. By means of evaluation of the image taken by the camera, data input can thus be recognized. Preferably, a minimum time of actuation is assumed.

Because the actuation on the projection screen 9 takes place and is thus carried out in the area monitored by the sensor space, the operation of the human-machine interface according to the invention is made possible in a secure manner.

On the projection screen 9 Data menu points are displayed and by touching the image of the respective point on the screen 9 a selection, ie data input, executed.

In this way, the vehicle is displaceable in an operating mode displayed for selection, such as sleep mode or driving readiness. But also arranged on the vehicle actuators are controlled depending on the selection, in particular activated.

LIST OF REFERENCE NUMBERS

1

light source

2

lens

3

liquid crystal

4

polarizing filter

5

beam of light

6

first pixel

7

second pixel

8th

vehicle

9

projection

10

control means

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102012004059 A1 [0002]
• DE 102013222137 A1 [0003]
• DE 102007022524 A1 [0004]
• US 6285778 B1 [0005]
• DE 10240227 A1 [0006]
• DE 69129303 T2

Claims (8)

Method for operating a vehicle that can travel on a ground, wherein by means of a sensor a spatial area is monitored, in particular for the presence of objects in the spatial area, wherein by means of a transmission module of the vehicle information is displayed on at least one projection screen, the transmission module a light source, in particular emitting polarized light, a single-pixel liquid crystal which causes a rotation of the polarization direction depending on a control signal, - and a polarizing filter having, wherein the projection surface is a surface area of the floor and at least partially delimits the spatial area, ie in particular is a surface area of the spatial area, whereby the projection surface is monitored for change by means of a camera, wherein, depending on the result of the monitoring carried out by means of the camera, information is forwarded to a computer, in particular control, of the vehicle, the same information being displayed on a further projection surface spaced from the first projection surface as on the first projection surface, wherein the further projection surface is likewise a surface area of the floor and at least partially limits the space area monitored by the sensor, in particular therefore a surface area of the spatial area. Method for operating a vehicle that can travel on a ground, wherein by means of a sensor a spatial area is monitored, in particular for the presence of objects in the spatial area, wherein information is displayed on at least one projection surface by means of a transmission module of the vehicle, wherein the projection surface is a surface area of the floor and at least partially delimits the spatial area, ie in particular is a surface area of the spatial area, whereby the projection surface is monitored for change by means of a camera, wherein, depending on the result of the monitoring carried out by means of the camera, information is forwarded to a computer, in particular control, of the vehicle. Method according to at least one of the preceding claims, characterized in that the information determines and / or activates an operating state of the vehicle. Method according to at least one of the preceding claims, characterized in that by means of the camera, the projection surface is monitored for touching a pixel of the projection surface, in particular by a foot or shoe of a human, in particular and dependent on the forwarding of the information is triggered. Method according to at least one of the preceding claims, characterized in that the same information is displayed on a further projection surface spaced from the first projection surface as on the first projection surface, wherein the further projection surface is also a surface region of the base and at least partially the space region monitored by the sensor limited, ie in particular a surface area of the spatial area, System for carrying out a method according to at least one of the preceding claims, characterized in that the system comprises a movable on a ground vehicle, which has a transmission module which is adapted to display information on a projection screen, wherein the vehicle is a sensor for monitoring a space area which is partially bounded by the projection surface, wherein the vehicle has a camera for monitoring the projection surface, the vehicle having a computer which is connected to the transmission module, the sensor and the camera or an image evaluation unit connected to the camera for data transmission. System according to at least one of the preceding claims, characterized in that the camera is connected to an image evaluation unit or has an image evaluation unit. System according to at least one of the preceding claims, characterized in that the transmission module - a light source, in particular a polarized light emitting light source, - a single-pixel having liquid crystal for control signal dependent rotation of the polarization direction - and a polarizing filter.

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