DE102018002541A1 - Light marking system for public transport stops - Google Patents

Abstract

The invention relates to a light marking system for stops in public transport, especially in large cities, with the bike paths leading to stops over. The device consists of one or more laser diodes which are installed in the bus stop area and deliver the laser light down on a road, sidewalk, bike path or in the entry / exit area for passengers to a dangerous or working Area to mark or to border. The marked area is bordered by an intense beam of laser beam and thus warned the other road users when passengers want to get on or off. Especially for public transport, the cyclists whose bike paths run over the stops, stay at a distance or stop when a bus or tram stops and passengers want to get on or get off.

Description

The invention relates to a security system that can be installed in stops for public transport. The system is a projection illumination, preferably a laser illumination, built into a landing which includes an area on the carriageway, cycle path, or sidewalk near the stop immediately before or when stopping a vehicle, e.g. Bus or tram / metro marked to protect the people staying there or those who want to get on or off in public transport, against cyclists.

There are a lot of public transport companies in major cities, with millions of passengers being transported. Because the communities value environmentally friendly solutions, the cycle paths in such cities are more or less well developed. But the cycle paths are very often past tram and bus stops. Cyclists who have a vehicle driver's license know that you should stop or at least drive more carefully past the bus when guests get on or off. However, many cyclists do not pay attention to passengers entering or exiting, e.g. drive past a bus. Thus, they endanger themselves and also the passengers who are on the bike path at short notice to get on or off.

There are numerous lighting systems which are intended to alert road users when e.g. a public passenger transport vehicle stops. This includes e.g. also the hazard warning system. A new light signal system, which is tested in some cities, consists of LED-s which are installed on the ground and these shine when approaching a tram. In particular, the system is designed to protect young people who are always looking at their mobile phones and headless through the area, from accidents. The lighting in the road, their attention can be so distracted by the mobile phone on the approaching tram. The lighting elements in the form of LED-s are installed directly on the roadway here. The disadvantage is that they must be supplied with power, which necessarily requires a power line. In addition, it is stepped on and they are polluted, which then less or hardly more light reaches the pedestrians. The weather conditions must be taken into account and expect that in winter sometimes snow is. The snow would completely obscure these lights and so they would be useless.

Different in the invention: here is a light projector, preferably a laser projector installed in the stop or bus stop area, which projects its light on the road. In this case, the light beams or laser light beams are projected onto the roadway or sidewalk, even in snow or bad weather conditions, whereby the area is illuminated with sufficient intensity.

There are also numerous light projection systems installed in construction machines or public transport passenger vehicles in the vehicles that light-project an area on the ground. There are also lighting systems intended to warn road users when e.g. a public passenger transport vehicle stops. This includes e.g. also the hazard warning system.

Some devices are known that use laser beams to mark areas, e.g. Laser markers used in the construction or surveying industry. Often, laser lines are generated to mark an area, with any project to be supported. Also for bicycles there is recently a laser line generator, which is designed as a tail light. Many projectors seen in the department stores often project logos or promotional slogans or brands on the floor that can not only be static but also dynamically designed (in the form of moving light patterns or even short videos).

DE 10 2014 011 915 A1 describes a method for warning road users of potential danger areas that may arise from a vehicle that is performing or wishing to carry out a driving maneuver. It is a light marking system for vehicles, which has a laser emitter, which marks an outdoor area by a laser beam projection.

DE 10 2011 119 923 A1 describes a lighting system, which is an intelligent lighting system, which should serve as a navigation and operation assistance for vehicles. The dimensions or action radii of a vehicle and its components are projected directly onto the roadway.

WO 2011/029 673 A1 describes a device that allows a visual lighting of a danger zone, where among other things is the stabilization of the projection unit, which should work vibration-free.

DE 10 2013 012 891A1 describes an invention that relates to a method of projecting a graphically displayable content through a projection device of a motor vehicle.

The registration DE 10 2016 007 764.6 describes a light marking system for vehicles installed in a passenger transportation vehicle (public transport). The system will only be activated when the vehicle stops at a stop and thus secures the passenger entry and exit area.

The system from the application DE 10 2016 007 764.6 Although it is designed to secure the entry / exit area to a stop, but installed in public transport vehicles, this can bring with it some disadvantages. Many transport vehicles are equipped with a tilting system, which is only used when mothers with pushchairs or older or disabled or want to get off. Because the projection is from the vehicle, the projection range would change in this case. In addition, the entry / exit area should be secured a few seconds before the vehicle arrives, because the passengers, as soon as they see a bus coming for example, are already in the entry / exit area. From the bus given projection can be done in such cases already too late.

However, none of these systems are able to warn and protect cyclists and waiting passengers from each other a few seconds before the public transport vehicle arrives at the station. These systems are not stationary in a transport stop, but installed in the vehicle, therefore, a premature warning is not possible. In all of the prior art systems, the light projections are generated from the vehicle and mark a floor area located in close proximity to the vehicle.

A projection system that would be stationary in a stop would have some advantages over the mobile projection methods that are projected from the vehicle. The projection would always be directed to the same area and could be activated a few seconds or just before stopping the vehicle to warn other traffic participants. Combined with a motion detector, it could also be activated as soon as people are on the bike path. In this way, the cyclists would be more careful when driving past a bus or tram stop and thus the security higher.

The specified in the claims 1 to 29 invention has for its object to provide an optical warning system that is able, reliable and above all timely cyclists who drive past a stop before or when stopping a means of transport warn and thereby protect the passengers when entering or exiting from accidents.

This problem is solved by the features listed in claims 1 and 29 and subclaims 2 to 28.

• - die Lichtprojektion und damit die Markierung auf dem Boden erfolgt rechtzeitig und schon einige Sekunden bevor das Fahrzeug an die Haltestelle angekommen ist,
• - weil der Projektor fest in die Haltestelle installiert ist, wird die Laserlicht-Markierung sehr genau an den Bereich projiziert, der bei der Einbau des Projektors eingestellt wurde,
• - das Laserlicht aus Laserdioden ist sehr intensiv und gut wahrnehmbar bei jede Umgebungslicht,
• - unabhängig von Wetterverhältnissen wird stets ein gut sichtbares Lichtsignal auf die Fahrbahn oder Bürgersteig projiziert,
• - keine Störung oder Bedeckung bei Schneefall oder Regen,
• - keine extra Stromleitung notwendig, weil die Vorrichtung direkt in das Haltestellen-Häuschen integrierbar ist und kann die Stromleitung aus der Haltestellen-Beleuchtung oder der elektronischen Fahrplan-Anzeige, oder einer Solarzelle anzapfen,
• - bei einer Variante ist eine sehr einfache Gestaltung möglich, wobei diese in eine Straßenlaterne integrierbar ist,
• - langlebig und zuverlässig,
• - bei unaufmerksamen Leuten, die statt auf dem Verkehr auf das Smartphone achten, leuchtet diese Projektion direkt auf deren Smartphone und Hände auf, sobald sie den Projektionsbereich betreten, somit wird eine sehr wirksame Warnung erreicht.

Advantages of the invention are:

• - the light projection and thus the marking on the ground is timely and a few seconds before the vehicle has arrived at the stop,
• - because the projector is firmly installed in the stop, the laser light mark is projected very precisely to the area that was set during installation of the projector,
• the laser light from laser diodes is very intense and easily perceptible with any ambient light,
• - regardless of weather conditions, a clearly visible light signal is always projected onto the road or pavement,
• - no disturbance or covering in case of snow or rain,
• - No extra power line necessary because the device is directly integrated into the bus stop cottage and can tap the power line from the stop lighting or the electronic timetable display, or a solar cell,
• - In a variant, a very simple design is possible, which can be integrated into a street lamp,
• - durable and reliable,
• - Inattentive people who pay attention to the smartphone instead of on the traffic, this projection lights up directly on their smartphone and hands as soon as they enter the projection area, thus a very effective warning is achieved.

Embodiments are based on the 1 to 10 explained.

• 1 eine einfache Aufbau des Systems,
• 2 den Einbau in eine Haltestellen-Häuschen,
• 3 eine Variante mit je zwei Laserdioden in eine Säule in die Haltestelle eingebaut,
• 4 ein einfaches Richtsignalübertragungs-System mit IR-Signalgeber und IR-Sensor,
• 5 den Aufbau des Systems,
• 6 eine elektronische Schaltung mit IR-Photodiode als Sensor,
• 7 eine Variante, bei der die elektronischen Anzeige miteinbezogen wird,
• 8 eine einfache Methode mit Ultraschall-Elemente,
• 9 eine Ausführung mit Bewegungsmelder / Präsenzmelder
• 10 den Einbau in eine Straßenlaterne.

Show it:

• 1 a simple structure of the system,
• 2 the installation in a bus stop house,
• 3 a variant with two laser diodes installed in a column in the stop,
• 4 a simple directional signal transmission system with IR sensor and IR sensor,
• 5 the structure of the system,
• 6 an electronic circuit with IR photodiode as sensor,
• 7 a variant in which the electronic display is involved,
• 8th a simple method with ultrasound elements,
• 9 a version with motion detector / presence detector
• 10 the installation in a street lamp.

The invention consists of one or more strong LED-s, or laser emitters, preferably laser diodes 1 who are not in the vehicle 2 but stationary in a stop 3 are built in, which have a ray of light 4 on the ground, in the immediate vicinity of the stop, to mark an entry / exit area visibly to other road users ( 1 ). The installation in a stop can be in a column 5 , Lantern 6 , a pylon or directly on the roof 7 or on the edge of the roof of the stop-cottage 8th to be built in ( 3 ). The laser emitter produces one or more lines 9 , Bar 10 , geometric figures, a warning sign, or words such as STOP or Halt. The light marker is off the stop, sideways down on the sidewalk 11 or bike path 12 generated to the pedestrians 13 or cyclist 14 that are on the way to warn ( 2 ). The lines generously surround the area on the side where passengers should get in / out. It looks like a fence of light that marks the entrance area. Just before a bus 2 arrives (a few seconds are sufficient) or as soon as a bus or a tram enters the station a radio signal from a transmitter (eg a radio transmitter or an IR diode / IR laser diode 15 ) in the vehicle from a radio receiver or IR sensor 16 received in the stop and thereby activates the light mark. Optimal is an early activation, eg about 5 to 20 seconds before a bus (or tram) has arrived. Enabling the system ahead of time adds tremendous security, as many of the collisions between waiting passengers and cyclists happen right before a bus arrives. Passengers, as soon as a bus is in sight, move closer to the edge of the lane to get on the bus faster. This behavior leads them to tick the bike lanes a few seconds before the bus / tramway arrival. Unfortunately, their attention is lowest in this phase. If you wait in Munich for three hours at a stop with a frequented cyclist way next to it and observe the behavior of the waiting passengers, you have a clearer idea of it. During this time of rush hour and summer, one can observe at least one cyclist collision or almost collision with passengers. The variants in which the projectors are installed on the vehicle, as in the application DE 10 2016 007 764.6 described, can only become active when the bus has arrived at the bus stop.

The radio signal transmission system, transmitter 15 or transponder can be realized in various ways, such as radio waves, microwaves or IR rays. For example, an IR diode or an IR laser diode 15 in a bus 2 Front mounted on the roof or upper front edge, with the beam direction forward, slightly upwards and also more or less directed to the left (in left-hand traffic), would provide an IR sensor 16 in the stop 3 built into a lantern, pillar or on the roof of the bus stop cottage, which is also set up in the direction of the coming buses. As soon as that happens, the laser diode becomes 1 activated for the light projection. This ensures that the projection is active a few seconds before the bus arrives. This process is self-regulating and does not require complicated control. The IR diodes or IR laser diodes as well as the IR sensor have no all-round view or beam angle but the beam area and the reception area resemble a cone that more or less has a somewhat broad base (similar to the beam cone of a flashlight or a headlight) , As soon as the bus approaches the stop, the IR signal is received. As long as the bus is in the stop, the laser diode remains active because the IR signal always arrives from the bus on the IR sensor. But if the bus goes away, no IR signal is to be received, the IR sensor no longer supplies a signal to an electronic circuit or controller 17 and that automatically leads to deactivation of the laser diode for projection. Even if the bus has to go into a curve that is in close proximity to the stop, the slightly wide beam angle of the IR LED or IR laser diode will still receive an IR signal from the IR sensor at the stop. In addition, one can take into account in the installation and set an optimal reception angle range.

The projected marking lines 9 can mark an area a few meters in front of and behind the stop or the stopped bus / tram. As a rule, two lines or bars projected from laser diodes are sufficient: one line to the side and one to the side behind the stop. These lines are projected transversely or slightly obliquely on the entry area or on the sidewalk or bike path and are intensively visible to all road users who are in the area. Especially with public transport, passengers are sometimes through Careless cyclists are at risk, therefore it is very important that passengers are not injured when getting on or off. The intensely shining LED s or laser diodes can be installed in a lantern, the stop house or at the top of a pillar. They should not be easily accessible to unauthorized persons. Although the lighting is delivered to the ground, but the cyclist react instinctively and will not or only carefully cross the intense glowing lines. The lines may be continuous, or they may have different designs, such as broken chaser lines, or may form flashing bars or running points, etc. If a slightly higher column were to be used for the projection elements, then the laser light projection could also be on the roadway or on the opposite side are projected to warn the motorists. This is particularly important in large cities, where there often run the tram rails in the middle of the street and the stops are there, or worse, if the passengers to get from the bus stop to the tram must cross a busy road, because There is no room for waiting passengers right where the tram stops. Such a situation exists eg in Munich - in the Bayerstrasse. In other cities too, sometimes the trams stop in the middle of the street (so sometimes the stops are designed in cities for lack of space), with the lanes for other vehicles running right and left. Although there are built in traffic lights, which prompt the vehicles to stop, but here the safety would be increased, even if the boundaries of the lanes in the entry / exit area are marked with intense bright laser light lines or laser light beam projections. In particular, while a bus or tram stop in a stop, motorists should be careful with the overtaking and drive at walking pace, as well as in the driving school was learned, but many do not do that, but rushing quickly. The laser light marking by laser projection, for example, from a pillar in the stop on the road would instinctively encourage motorists to rethink and caution to caution. The laser lines or the red, thick, blinking laser bars, directly on the road, are not to be overlooked. In addition, the fact that the laser light from the top of the stop, penetrates directly into the interior of a car when the car retracts the laser beam protected area anyway.

The 3 shows a variant that is installed in a bus stop. Here are two laser diodes installed in a pillar in the stop, which mark the entire entry-level area in the stop. Their rays are emitted obliquely downwards, so that an area on the ground is marked, with the intention to warn the cyclists of the passengers getting in or out, but it is also possible for the other road users on the other side to hit the road additionally warn. The laser beam can, but does not have to illuminate the entire area, rather it should mark the limits of the entry and exit areas of a stopped vehicle, or at least illuminate more intensely at the borders. The marker may be a projected sign (eg stop sign) that is delivered on the bike path behind the bus. Absolutely two laser emitters for two laser light projections are not necessary, but advantageous because sometimes on the bike paths the cyclists are allowed to ride in both directions. In addition, there is also the fact that some cyclists go in the wrong direction. That would justify the installation of both laser diodes, one for the front and the other for the rear area on the bus. Thus, for example, the bus entry / exit area would be visibly marked and adjoined on stopping, immediately and also at daytime brightness. The laser diodes are built into the stop and these deliver laser beams to the outside up to 2-3 meters to the side of the bus and a few meters behind and in front of the bus when the bus stops in the intended area. This will mark the boundaries for an area or project two stop signs or a warning on the bike path or pedestrian walkway / sidewalk. Although the activation of the laser diodes can also be manually initiated by the bus driver by remote control each time stopping in a bus stop, but better is an electronic circuit or control that automatically activates this immediately before stopping or when stopping the bus or tram. Also, a manual radio signal control can be done by pressing the hold button by passengers in combination with a standstill recognition instrument of the vehicle (eg speedometer information or brake sensor). In the event that one of the holding buttons of passengers is operated, only a confirmation signal from the speedometer instrument is expected that the vehicle is stationary and then the laser diodes are already activated by radio signal at the stop. Similarly, the activation of a turn signal or flashing system of the vehicle can be used for the activation of the laser diodes. In that case, it would be perfectly sufficient to couple the electrical control of the flashing system with the radio laser control. This solution would be the simplest and most suitable for this purpose. Nevertheless, there are also several and more possibilities to automatically control the laser diodes at the stop. The installation of transmitter / transponder systems in the stop and the vehicle, which communicate with each other and are coordinated, is actually the best solution to activate the light / laser light projectors in the stop.

The 4 shows simpler directional signal systems that are optimally used for signal transmission from the vehicle to the control electronics of the laser projector of the stop. For example, would be sufficient if an IR signal transmitter installed on the vehicle, which emits a directional signal to the side right of the vehicle whose geometry has the shape of a cone. The signal would hit a sensor at the stop as soon as the vehicle stops, thereby activating the projector. Of course, the signal can be protected by a simple encryption method of unintentional IR signals (eg from IR signals of the parking sensor systems of vehicles or simple gadgets of young people with standard IR remote controls).

Projecting from the stop can also help the bus driver or tram driver to stop, as it allows him to better estimate the stopping area, provided that the lines are calibrated to accurately mark the stopping area. The driver sees the light projection lines and indicates exactly where he should stop his vehicle.

Because the laser diodes or the LEDs for the light projection from above obliquely down are delivered, they also dazzle anyone. One would almost have to lie down on the ground to look directly into the light or laser beam source. The installation of the projection elements, sensors and control can, if necessary, directly into a lantern or a column, if a bus stop cottage is not provided at the location.

Decisively advantageous over the prior art is the possibility of generating the projection a few seconds before the vehicle arrives at the stop. Because the waiting passengers in a stop when looking up into the distance of a tram or a bus, get up from benches and go in the entry / exit area, are warned by a timely activation of this projection system, the passing cyclists and thus the waiting people protected. The projection is generated a few seconds before the vehicle arrives and the marking area remains the same, regardless of whether a bus stops a few meters forward or back, or whether the bus is tilted or standing straight. In addition, the marking is very generous, so even if the bus stops a few meters outside the holding area, but the entire entry / exit area is covered with the projection. With the variants of the applications from the prior art, especially a projection before the vehicle arrives, that would not have been feasible. By prematurely activating the projector system, the passengers and cyclists are still reliably protected. In addition, the fact that a stationary built-in projection system is more durable and requires less maintenance than if it were installed in the vehicle. Installed stationary, the device is not exposed to the vibrations that are otherwise always generated in a vehicle while driving. In order to protect the device against the influence of weather conditions, you can have a small case 18 with transparent and vertically arranged panes 19 for the laser beam exit. The housing may have a cone-shaped rooftop 20 or pyramidal cover 21 be fitted on top, on which no snow sticks. In addition, the laser exit discs with a dirt and water repellent nano-coating 22 equipped with nothing sticking to it - not even dust ( 5 ).

The device can be used in all stops. Also at stops of rail vehicles outside the city, e.g. Trains, tram and metro. Installed in a subway station, this device marks the ground area on the side where the passengers get in and out of the subway vehicle in front of the incoming rail vehicle even before starting a subway vehicle to warn.

An advantageous embodiment of the invention includes an electronic circuit which generates the light mark flashing. This will raise the attention of other participants slightly higher. The light mark, which is given in the form of a laser light projection on the ground, can be given by the stop (whether designed for tram, bus or other vehicle) also several tens of meters before stopping to warn the waiting or pedestrians, if They want to quickly change the side road in front of the moving vehicle and they would bring themselves in danger.

A station equipped with this device may also be coupled to auxiliary controls, e.g. First activate the ground-marking laser emitter with low power before arriving at a bus and only when the bus stops then power the laser emitter at full power. In contrast to the systems already in use, which are used in passenger cars of the upper class, which illuminate only the floor under the door, or project a vehicle logo of light on the floor, this device is designed here so that a Laser emitters marked an area generously visible to other road users, which is important for the safety of passengers when getting in or out, even in bright daylight.

The timely activation, or activation of a laser diode as a projection emitter, a few seconds before a means of transport is stopped, can take place via various transponders or transmitter / receiver by radio signals. A transmitter 15 , which is installed in a bus or tram, sends signals to a receiver or sensor 16 in a stop 3 is installed. Based on the signal strength, it is automatically determined how close the bus has arrived. For example, the activation of the laser projection can only take place when the bus has traveled approx. 80 meters or less to the stop nearby. The signals can also be IR signals that are directed to the stop like a cone of light. As soon as an IR sensor receives these IR signals sent by the bus, a programmed signal strength threshold is exceeded at a certain IR light intensity and this activates the laser projection. The necessary electronic elements and circuits are easy to implement. It would be quite sufficient to use an IR photodiode as a sensor coupled to an electronic amplifier which in turn is coupled directly to the laser diode, via a transistor / thyristor circuit or via a relay ( 6 ). Through a small shield 23 or lens system in front of the IR sensor, false signals can be largely excluded. The sensor can be oriented so that its reception area is set in the direction from which a vehicle is to arrive. As a power source for the system, for example, a solar cell 24 combined with a rechargeable battery 25 serve or it becomes the power line of a street light lantern 26 , a Illuminated Sign, a Stop Indicator, or Tapped Off of the Stop House Cottage Lighting. The system can also be completely integrated into a street lamp ( 10 ). This has some advantages: the power supply is available, as well as it offers enough protection against wind and weather conditions. The street lamps are usually built robustly. The system can be installed in the pillar of the street lamp or simply put on it.

As a signal transmission system from vehicle to station can also be the electronics of the minute-arrival indicator 27 be included. It is also controlled by radio and shows exactly in minutes, for example, when a bus will arrive. By combining the radio signal receiver of the electronic display with the control of the laser projector, one can more or less put together a working protection system with light projection for the waiting guests and cyclists. Approximately One minute before the arrival of the bus, the laser projection could be activated and switched off automatically after approx. two minutes. A bus usually stops at a stop for no more than 30-40 seconds and one minute for the laser projection after the bus arrives would be perfectly adequate. The reliability of the electronic display is not one hundred percent, but at least it is easier and it takes less effort to implement it ( 7 ). An extra power source for the laser projection system would then no longer be necessary because the power supply of the electronic display would be tapped.

As a signal transmission method from vehicle to stop, or a distance determination between the vehicle and the stop and the GPS system can be integrated. However, in that case, the manufacturing price and the technical effort become significantly higher. As a simple method, the ultrasonic method can also be considered. An ultrasound generator 28 on the vehicle and ultrasonic sensors 29 at the stop 3 could detect the arrival of the vehicle and activate the laser projection by electronic control ( 8th ).

Nowadays, almost all stops are also equipped with radio transmitters / receivers, which transmit the position of the vehicle based on arrival time. A radio transmitter on the vehicle can activate the light projection there when stopping at a stop or immediately before it. A radio receiver in the station would receive the signal from the vehicle and automatically activate the projection. The signal transmission can be encrypted, so that false activations can be excluded. Even simpler activation methods are available: e.g. via the field strength of the transmitter, the receiver can automatically determine the arrival of the vehicle. Once the field strength of the received signal exceeds a threshold, then the projection should be activated. This would practically mean that if the bus or tram closer than 100m arrives at the stop, the projection would be automatically activated. The simple variant with the determination of the field strength of such radio transmitters, wherein the transmission-reception frequencies are coordinated with each other, with automatic detection, is very inexpensive to manufacture. This would allow you to control the laser diodes in the stop without the driver having to operate any buttons or controls on the vehicle. Because the field strength of the transmitter rapidly increases with approach (square to distance), the false activations, e.g. if the bus is at a traffic light, avoided. In addition, in modern public transport vehicles, there are some electronic elements which, although providing data for other purposes, can be automatically detected by means of a circuit, whether the vehicle is at a traffic light or the vehicle is stopped to allow passengers to drive. / to get off.

In public transport stops, such as bus, school bus or tram stop, this device is very effective, because the laser emitter, the exit area visibly marked, the bordered by laser beam projection and thereby warns the other road users. The system can be coupled to a light sensor that controls the laser light intensity and thus also the light intensity of the light projection on the ground depending on the ambient light conditions, and so that at dusk or night, a weaker LED light or laser light beam is emitted, as eg in daylight, or sunshine. The laser beam intensity is easily controlled by electronic circuits. Similarly, self-regulating display light intensity on many TVs or laptops, depending on the ambient light, the brightness of the display automatically adjusted. A simple circuit to realize this would be to couple a photodiode to an electronic circuit, wherein the ambient light-dependent current-resistance of the photodiode serves as a regulator for the voltage or current values for the laser diode. The controller can automatically adjust the light intensity of the laser marker in the light conditions in this way.

The radio transmitter in the bus or tram does not necessarily have to be permanently on signal transmission mode, but it can e.g. Send one short pulse per second or only activate it when the vehicle stops. In the latter case, however, the light projection would be impossible, e.g. to activate before the bus arrives. As an initiation signal generator for the activation of the laser diodes in the stop and the flashing system of the bus or the tram can be used. The radio transmitter on the vehicle can be coupled with the switching unit or power supply of the flashing system.

As soon as the turn signal is actuated, the radio transmitter can be automatically activated at the same time and thus an activation signal can be given to the stop in good time, which then activates the laser diodes and thereby marks the bottom area immediately.

The laser light color of the marker can be red, yellow, green or any color. Red would be beneficial because it automatically animates the riders or cyclists to stop. Another possibility would be to install three laser diodes in three primary colors (red, green and blue - RGB), which radiate in the same direction or illuminate the same area on the ground. By the light beam intensity variation of the individual laser diodes one can produce almost all light colors with it. If you combine for example the blue laser diode with the green comes out yellow laser light. When activating all three laser diodes, almost white laser light would have to be generated. One can first mark the ground area with red laser light immediately before and after stopping the vehicle, but when driving off, when all passengers are inside (or outside, as the case may be), briefly mark the area with a green laser.

Nowadays, there are also laser diodes, which are equipped with a small active screen (converter), by which the monochromatic laser light is converted into broad spectrum and thereby comes out a kind of white laser light. Although you can use white laser light, but not necessarily required.

The system can also be designed so that the light marking system for public transport stops is constructed as a plug-on attachment or is designed with a magnetically coupled device with a self-sufficient power supply over long lithium cells or solar cells or a combination of the two. In that case, all stops could be quickly retrofitted at low cost. It would be sufficient if such a device with a clip-on attachment is simply installed or slipped over the stop sign in the column, as an intermediate piece and the projection unit is aligned so that it illuminates the correct area. The power would come from solar cells and power storage, such as lithium cells. A magnetic holder can be handy if you want to install this device on the roof of a bus stop cottage. But you can also secure them against theft by screwing the device.

A variant has a motion detector or presence detector 30 which is coupled to the laser projection unit that monitors the bus stop area. With the motion detector, the stop area would be immediately secured by projection elements when people are there, even if no bus or tram there still anfährt. As soon as people are detected who are in the station area or are in the cycle path area, the light projection marking is activated in order to protect these persons from bicyclists ( 9 ). That would be optimal both at stops in cities, where many cyclists are traveling and passing by stops, as well as in small towns, use. A coupling or control of the light projection elements by the motion detector (presence detector) could also cause the fact that when not stopping people in the waiting area, no light projection is triggered, even if, for example, a bus would pass. This variant works completely self-sufficient and does not necessarily need signals from an approximate means of transport. So long the waiting people are in the shelter or the bike paths do not cross, there is also no light projection. But if they enter the cycle paths, which would normally mean the arrival of a bus or tram, the presence detector or motion detector would be activated, thereby automatically starting the laser light projection. This variant offers the maximum protection, because even if the vehicle has not yet arrived, the stop area is hedged as soon as the passengers are to go on the bike path. In particular, careless children are better protected.

In several of these variants, the activation and deactivation of the light projection takes place by the sensor detection of the signals from the vehicle. Because the signal is delivered below a predefined angle, timely activation is fully automatic. The deactivation works quite simple. As soon as the vehicle starts, the beam range of the signal generator will no longer coincide with the reception range of the sensor and thus the signal will be missing. This leads to a shutdown of the light projection. With radio wave variants, this can be done very precisely over field strength. An evaluation unit at the stop and a signal sensor / field sensor determine the signal strength of the transmitter from the vehicle. If a certain threshold value is exceeded, the light projection is triggered. As soon as the vehicle moves away, the signal strength automatically drops and the light projection is switched off.

LIST OF REFERENCE NUMBERS

1.

laser diode

Second

vehicle

Third

bus stop

4th

beam of light

5th

pillar

6th

Lantern

7th

top, roof

8th.

Stop-cottage

9th

lines

10th

bar

11th

sidewalk

12th

cycle path

13th

pedestrian

14th

cyclist

15th

Radio transmitter or an IR diode / IR laser diode

16th

Radio receiver or IR sensor

17th

electronic circuit or control

18th

small case

19th

slices

20th

conical rooftop

21st

pyramidal cover

22nd

Dirt and water repellent nano-coating

23rd

shielding

24th

solar cell

25th

battery pack

26th

Road Light Lantern

27th

Minute Arrival Display

28th

ultrasonic generator

29th

Ultrasonic sensors

30th

motion detector

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 102014011915 A1 [0007]
• DE 102011119923 A1 [0008]
• WO 2011/029673 A1 [0009]
• DE 102013012891 A1 [0010]
• DE 102016007764 [0011, 0012, 0020]

Claims (29)

Light marking system for public transport stops, characterized in that it consists of - Projection elements with at least one strong light projector or a laser emitter fixed in a stop area or in a stop house or in a nearby pillar or lantern Slightly upwards with the beam direction installed obliquely downwards, a stop area or floor area in which waiting passengers are located and used as a passenger entry and exit area to the public passenger transport vehicle, also visible during the day by laser light or a laser light projection, - a controller which is electrically coupled to the laser emitter and activates the laser emitter only when or immediately before a passenger transport vehicle arrives at the stop, - an electronic detection system which detects the entry of a public Passenger transport vehicle in the Ha Actually recognize as such, which is coupled to the controller exists. Light marking system for public transport stops Claim 1 , characterized in that the laser emitter is a laser diode and an intensely illuminating light marking or light beam abutment on the ground, road or sidewalk, the light signal in a figure shape or a light spot, light line, a warning sign, or warning in the stop area for the cyclists or vehicles depicts. Light marking system for public transport stops Claim 1 or 2 , characterized in that the control for the laser emitter is equipped with a flashing mode and the laser beam is emitted flashing. Traffic light marking system for public transport stops according to one of the preceding claims, characterized in that the recognition system recognizing the entry of a public passenger transport vehicle into the stop as such, with a radio signal transmission device Is provided. Light-marking system for public transport stops according to one of the preceding claims, characterized in that the recognition system recognizing the entry of a public passenger transport vehicle into the stop as such, with a radio signal transmission device, which is installed in the public passenger transport vehicle is coupled by radio. A light-marking system for public transport stops according to any one of the preceding claims, characterized in that in the stop a radio control is installed, which is coupled to the laser emitter, which can receive a radio signal of a entering into the stop public passenger transport vehicle. Traffic light marking system for public transport stops according to any one of the preceding claims, characterized in that the radio control at the stop is controlled by a radio signal which is controlled by a hand brake / standstill brake actuation detection sensor or end switch in the public Passenger vehicle is generated, is controllable. A light-marking system for public transport stops according to any one of the preceding claims, characterized in that the radio control in the stop is controllable via a transmitter on the vehicle, which is coupled to a parking position actuation detection sensor or an associated switch. Traffic light marking system for public transport stops according to any one of the preceding claims, characterized in that it is coupled via a radio control with the control of the turn signal / flashing system of the vehicle or coupled with the control of a built-in public vehicle side lowering device is, wherein when lowering the vehicle, the laser emitter at the stop is active. Light marking system for public transport stops according to one of the Claims 1 to 9 , characterized in that the laser emitter marks the lanes or sidewalk on both sides of the vehicle or this borders by laser light beam projection as a virtual fence. Light-marking system for stops in public transport according to one of the preceding claims, characterized in that the controller is equipped with electronic components, via which it is operable with an extra remote control or with the remote control of the vehicle. Light marking system for public transport stops according to one of the preceding claims, characterized in that the laser emitter emits red or green light. Light marking system for public transport stops according to one of the Claims 1 to 11 , characterized in that the laser emitter emits blue or yellow light. Light marking system for public transport stops according to one of the Claims 1 to 11 , characterized in that the laser emitter is a white-light laser emitter or consists of three laser diodes, which can emit three primary colors of light, red, green and blue. Light marking system for public transport stops Claim 14 , characterized in that all three laser diodes are aligned so as to irradiate the same area at the bottom. Light marking system for public transport stops according to one of the Claims 12 to 15 , characterized in that the laser emitter / laser diodes are separately controllable. Light marking system for public transport stops Claim 15 , characterized in that it is coupled to a controller which controls the laser light intensity of the individual laser diodes separately and thereby can influence the light color ratio. Light-marking system for public transport stops according to one of the preceding claims, characterized in that the control for the light marking system is coupled to an ambient light sensor, via which the light intensity of the laser marker or the laser diodes is controllable. Light marking system for stops in public transport according to one of the preceding claims, characterized in that it is designed so that the laser marking or the projection on the ground before the stop of a public transport is activated. Light marking system for stops in public transport according to one of the preceding claims, characterized in that it is designed as attachable attachment or coupled with magnetic holder device with self-sufficient power supply over long lithium cells or solar cells or combination of the two. Light-marking system for public transport stops according to one of the preceding claims, characterized in that it is equipped with a transponder, which has sensors or a direct -ivity receiving unit for a reliable detection of an approaching transport vehicle equipped. Light marking system for stops in public transport according to one of the preceding claims, characterized in that it is coupled to at least one motion detector or presence detector, which monitors the stop area and over which the projection elements are controllable. Light-marking system for public transport stops according to one of the preceding claims, characterized in that it is installed in a small protective housing with a conical roof or pyramidal cover with the top up. Light marking system for public transport stops Claim 23 , characterized in that the protective housing is equipped with a laser exit jet disc having a dirt or water repellent coating. Traffic light marking system for public transport stops according to any one of the preceding claims, characterized in that it is coupled to an electronic arrival display system of the stop or is controllable by the arrival display system. A public transport stop light marking system according to any one of the preceding claims, characterized in that it is coupled to an ultrasonic signal transmission system enabling signal transmission from the vehicle to the stop light-marking system. Light marking system for stops in public transport according to one of the preceding claims, characterized in that a radio signal transmitter is coupled to the public transport for the activation of the projection elements at the stop with the flashing system of the vehicle. Light-marking system for public transport stops according to one of the preceding claims, characterized in that it is coupled to electronic components using the GPS system. Light marking system for stops in public transport, characterized in that it features - projection elements with at least one strong light projector or a laser emitter fixed in a stop area or in a stop-little house or in a pillar or lantern nearby is installed slightly higher with the beam direction obliquely downwards, which is also good at a stop area or ground area where waiting passengers use and as a passenger entry and exit area to the public passenger transport vehicle can mark visually by laser light or laser light projection, - a controller with at least one motion detector or presence detector, which monitors the stop area and over which the projection elements are controllable, which is electrically coupled to the laser emitter and then activates the laser emitter, when people or waiting passengers cross or stay on a bike path.

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