EP1012400A1 - Systeme photoemetteur actif de marquage routier - Google Patents

Systeme photoemetteur actif de marquage routier

Info

Publication number
EP1012400A1
EP1012400A1 EP98934322A EP98934322A EP1012400A1 EP 1012400 A1 EP1012400 A1 EP 1012400A1 EP 98934322 A EP98934322 A EP 98934322A EP 98934322 A EP98934322 A EP 98934322A EP 1012400 A1 EP1012400 A1 EP 1012400A1
Authority
EP
European Patent Office
Prior art keywords
road
light emitting
markers
marking system
active
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.)
Withdrawn
Application number
EP98934322A
Other languages
German (de)
English (en)
Other versions
EP1012400A4 (fr
Inventor
Valentin Emanuel Marinescu
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.)
Dalmark Technologies Ltd
Original Assignee
Dalmark Technologies Ltd
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 Dalmark Technologies Ltd filed Critical Dalmark Technologies Ltd
Publication of EP1012400A1 publication Critical patent/EP1012400A1/fr
Publication of EP1012400A4 publication Critical patent/EP1012400A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/50—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
    • E01F9/576—Traffic lines
    • E01F9/582—Traffic lines illuminated
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/50—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
    • E01F9/553—Low discrete bodies, e.g. marking blocks, studs or flexible vehicle-striking members
    • E01F9/559—Low discrete bodies, e.g. marking blocks, studs or flexible vehicle-striking members illuminated
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
    • E01F9/658—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by means for fixing
    • E01F9/669—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by means for fixing for fastening to safety barriers or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2111/02—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for roads, paths or the like
    • F21W2111/027—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for roads, paths or the like for indicating kerbs, steps or stairs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to road markers and, more particularly, to an active, light emitting road marking system.
  • Prior art passive road markers which are also known in the art as pavement markers and further as “cat eye markers", are light reflecting button like elements.
  • the construction of prior art road markers is shown in Figures 1-3.
  • Figure 1 shows a basic reflective element 20 which includes a light transparent body 22 (made of plastic or glass) and a light reflective cover 24.
  • Figures 2a-b typically few, say, seven, basic elements 20 are grouped together into a reflective unit 26 via a plastic mold 28.
  • a passive road marker 30 typically includes a trapeze body 32 made of a plastic or metal, such that units 26 form an angle ⁇ of about 15° with the road.
  • Passive road markers are typically arranged spaced from one another along roadsides, road margins, between lanes, on road separation elements, etc., such that light from passing vehicles is reflected by the markers, thereby the roadside, lane, margins and/or separation elements are visibly marked also at dark and under bad weather conditions.
  • a light emitting road marking system which can be used to mark roads.
  • the system comprising a plurality of active light emitting road markers being permanently fixated in an arrangement onto a road, each of the plurality of active light emitting road markers including at least one light source, each of the light sources being supplied with power for enabling emission of light.
  • the arrangement extends along at least a section of the road, the plurality of active light emitting road markers are therefore arranged along the road section.
  • the road section includes a turn, the plurality of active light emitting road markers are therefore arranged along the road turn.
  • each of the light sources is a light emitting diode.
  • each of the light emitting diodes emits light having a color selected from the group consisting of white, red, green, blue, orange, yellow and infrared.
  • each of the light emitting diodes is a bicolor light emitting diode.
  • each of the plurality of active light emitting road markers includes a body, the bodies house the light sources.
  • each of the plurality of active light emitting road markers is made of a material selected from the group consisting of metal, plastic and glass.
  • the plastic is elastomeric polyurethane mixed with a filler.
  • the body of each of the plurality of active light emitting road markers is acquired a shape selected from the group consisting of a trapeze pyramid, a cube and a dome.
  • system further comprising at least one control unit communicating with each of the plurality of active light emitting road markers, the control units serving for controlling the operation of the plurality of active light emitting road markers.
  • control units serving for controlling the operation of the plurality of active light emitting road markers.
  • groups of active light emitting road markers are independently controlled.
  • At least some of the groups include a single active light emitting road marker.
  • system further comprising at least one electricity and control cable connecting the plurality of active light emitting road markers.
  • adjacent active light emitting road markers are spaced from one another from about one to about twenty meters.
  • the power is an electrical power and is supplied by a power source selected from the group consisting of an electrical net system, a battery and a solar cell.
  • the road marking system comprising a strap and a plurality of active light emitting road markers being permanently fixated or integrally formed with the strap in an arrangement along the strap, each of the plurality of active light emitting road markers including at least one light source, each of the light sources being supplied with power for enabling emission of light.
  • the strap is made of polyurethane. According to still further features in the described preferred embodiments the strap is acquired a color selected from the group of white, orange and yellow.
  • a parking system to be implemented in a parking lot having a plurality of parking places and an optional turning point, the system comprising (a) a plurality of active light emitting road markers, each of the plurality of active light emitting road markers including at least one light source, each of the light sources being supplied with power for enabling emission of light, the plurality of active light emitting road markers being arranged in routs leading from the optional turning point to at least some of the parking places; (b) a plurality of sensors, each of the sensors serving for indicating the availability of one of the plurality of parking places; and (c) a control unit electronically communicating with the plurality of sensors and the plurality of active light emitting road markers, the control unit serving for operating one of the routs of light emitting road markers, for marking a path leading to an available parking place.
  • a road marking method comprising the steps of (a) permanently fixating a plurality of active light emitting road markers along at least a section of a road, each of the plurality of active light emitting road markers including at least one light source; (b) supplying each of the plurality of active light emitting road markers with power for allowing emission of light from the light sources; and (c) operating the plurality of active light emitting road markers, such that, at a given time, at least one of the active light emitting road markers emits light.
  • the permanent fixation is effected by a process selected from the group consisting of nailing, gluing and screwing.
  • gluing is effected by a bitumenic glue.
  • the supply of power is effected by forming a slit along the section of the road and placing a power cable in the slit, the cable provides the plurality of active light emitting road markers with power for operation.
  • the plurality of active light emitting road markers emits light in a synchronized pattern.
  • an active road marker comprising a body and at least one light source and an electronic chip embedded in the body, the electronic chip being in electronic communication with at least some of the light sources, and serving for controlling the operation of the light sources.
  • the present invention successfully addresses the shortcomings of the presently known configurations by providing an active road marker and a road marking system. Being active, the visibility of such markers does not depend upon external light of a passing vehicles and can be used to provide lighting effects. BRTEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a cross sectional view of a prior art reflective element implemented in a prior art reflective unit implemented in passive, light reflecting, prior art road markers;
  • FIGs. 2a and 2b are face and cross sectional views of a prior art reflective unit implemented in passive, light reflecting, prior art road markers;
  • FIGs. 3a and 3b are perspective and cross sectional views of a prior art passive, light reflecting road marker
  • FIGs. 4a and 4b are perspective and cross sectional views of an active, light reflecting road marker, suitable for use in the road marking system according to the present invention
  • FIG. 5 is a schematic depiction of a section of a road on which an active marking system according to the present invention is permanently implemented;
  • FIG. 6 depicts an active marking strap according to the present invention
  • FIG. 7 is a schematic depiction of a parking system according to the present invention.
  • FIG. 8 is a schematic depiction of one embodiment to achieve a synchronized lighting effect in the road marking system according to the present invention.
  • FIG. 9 is a schematic depiction of another embodiment to achieve a synchronized lighting effect in the road marking system according to the present invention.
  • the present invention is of active, light emitting road marking system which can be used to mark roads.
  • the present invention can be used to replace prior art passive road markers and thereby better mark and highlight road features such as, but not limited to, lanes, driving directions, stopping lines, road margins, crosswalks, intersections, fences, separation elements, turns and the like.
  • road is used herein in the specification and claims below in a broad sense and therefore also refers to any road feature (e.g., turns, lanes, separation elements, fences, margins, etc.), as well as to aircraft runways, parking lots, railroads, railways, etc.
  • any road feature e.g., turns, lanes, separation elements, fences, margins, etc.
  • Figures 4a-b illustrate one example of the basic construction of a single active, light emitting road marker to be used in the system according to the present invention, which is referred to hereinbelow as road marker 40.
  • active road marker and its equivalent term “active, light emitting road marker” both refer to a light generating marker, however, these phrases, as used herein, do not read upon lighting elements which emit light to eventually be scattered and/or reflected from nearby objects, such that the objects become clearly visible to the human eye.
  • the road markers according to the present invention are implemented along dark roads which lack a lighting system.
  • light source refers to any light generating element which generates light having a luminous intensity value lower than 20 candela, preferably ranging between 0.002 - 10 candela, most preferably 0.5-
  • road marker 40 includes a body 42 and at least one, preferably three or more, light sources 44.
  • light sources 44 For daylight applications a plurality, say 5-10, of light sources 44 each generating light having a luminous intensity value in the range of 3-12 candela, preferably about 6 candela, are preferred. When used at night, only a fraction of the 5-10 sources 44, say 1-3 sources 44, are operated.
  • Light sources 44 are housed (held) by, preferably embedded in, body 40.
  • road marker 40 is manufactured by placing light sources 44 in a mold of a desired shape and size and molding a suitable hardening material in a liquid form into the mold, such that when the material hardens, light sources 44 become permanently embedded within body 42.
  • any hardening material is suitable for body 42.
  • Examples include, but are not limited to, metal, plastic and glass.
  • road marker 40 should be resilient to the tough conditions present by a road, e.g., resist the impact and weight of passing vehicles, for these applications the material of which body 42 is made of is selected resilient to such conditions.
  • body 42 is made of an elastomeric polyurethane mixed with a suitable filler such as silicates and recycled rubber. Should further strength is required for road marker 40, it may further include an external frame 46, a feature sometimes used along with prior art passive road markers.
  • Frame 46 may be an open frame, as shown in Figures 4a-b. Alternatively, frame 46 may cover body 42 substantially completely.
  • Body 42 may acquire any desired shape, such as, but not limited to, a trapeze pyramid (having a polygonal base, typically triangular or square base), a cube or a dome.
  • the shape of body 42 and the positioning of light sources 44 in body 42 are preferably selected such that light sources 44 avoid direct contact with wheels of passing vehicles.
  • light sources 44 are protected both by being mostly embedded within body 42 and by having any exposed parts thereof positioned so as to avoid contact with the wheels of passing vehicles.
  • the outlines of body 42 are curved.
  • each of light sources are curved.
  • LED 44 is a light emitting diode (LED) which, as well known in the art, includes a diode 48 and a lens 50. Any LED may be of choice. LED color, for example, may be selected from the group of white, red, green, blue, orange, yellow and infrared colors. The latter may serve for military applications, wherein viewers are equipped, for example, with headworn infrared detecting instruments.
  • the LED may also be of a bicolor type. Any combination of colors is suitable for the bi-color LED.
  • the LED is preferably selected to emit light at 70°. However, for some applications LEDs emitting light at 15-180° are also applicable. As well known in the art, the lighting angle of the LED is an intrinsic feature dictated by the lens employed therein.
  • Light sources 44 require electrical power for their operation. Therefore, electrical wires 52 are provided. Each source 44 may be wired in parallel or in serial to another source. Parallel wiring has an inherent advantage since disfunctioning of one source does not lead to disfunctioning of all others.
  • road marker 40 further includes an electronic chip (processor) 54, which is best seen in Figure 4b.
  • Chip 54 serves as a decoder for controlling the operation of light sources 44, if so desired. Further description concerning the operation of chip 54 is given hereinbelow.
  • any suitable power source may be used to provide light sources 44 with the electrical power for their operation.
  • a single source provides power to a plurality of road markers 40 arranged in a suitable arrangement.
  • the power source may be the electrical net, a battery (preferably a rechargeable battery) or even a solar cell (photoelectric cell), or any combination thereof for power backup.
  • each of markers 40 includes two sets of light sources each pointing at a different direction.
  • the different sets may emit light in different colors and may be independently operated.
  • Figure 5 presents a road 60 featuring two lanes 62 in each driving direction, a separation element 64, margins 66 and a roadside fence 68.
  • a road marking system 70 according to the present invention is implemented in various locations along and across the road.
  • System 70 includes a plurality of active light emitting road markers 72 permanently fixated in an arrangement onto the road.
  • each of the plurality of active light emitting road markers 72 includes at least one light source supplied with power for enabling emission of light.
  • the arrangement of the plurality of road markers 72 extends along at least a section of the road.
  • the plurality of active light emitting road markers 72 are therefore arranged along at least one section of the road.
  • the road markers may be permanently attached to any feature of the road, both features extending along the road (e.g., lane, separation element, sidefence, margins, poles) and features of a more localized nature, or features crossing the road (e.g., stopping line, crosswalk, junction, railroad junction etc.).
  • the plurality of road markers are arranged along a turn present in the road. This ensures that drivers will be able to notice the curvature of the turn even in the dark and especially under bad weather conditions.
  • the prior art passive road markers are deficient in this respect since they are not visible unless directly illuminated. However, due to the turn, at any given time, most of the prior art markers are not illuminated. Furthermore, both illumination and reflection are severely restricted under bad weather conditions wherein visibility is limited.
  • road marking system 70 further includes at least one control unit 74.
  • Unit 74 communicates with each of the plurality of active light emitting road markers 72.
  • Control unit 74 serves for controlling the operation of the plurality of markers 72.
  • Unit 74 is preferably positioned close to the road and is wired, preferably with underground wires arranged into a cable, to each of the plurality of road markers 70.
  • the wires are preferably arranged into electricity and control cable and serve also for power supply. Alternatively, different wires/cable provide the markers with the power required for their operation.
  • each of the plurality of road markers, or groups (e.g., 5-20) of road markers 72 are independently controlled by unit 74. This ensures that a lighting pattern can be achieved.
  • the term "lighting pattern" refers to any change in lighting associated with the operation of system 70.
  • One pattern may include operating road markers 72 or groups thereof in a successive synchronized fashion, such that a light wave progresses along the road.
  • a plurality of such light waves may be exercised simultaneously, such that one wave follows the other.
  • the speed of progression of each of the waves may be correlated to the speed limitation set for that road, and thereby assist a driver to notice that he/she is under or over speeding the vehicle.
  • Another possible application is to have the color of the light emitted by the active road markers altered in accordance with the use intended for the road (or lane) in that time of day. For example, when a lane turns dedicated only to public transportation vehicles during, for example, rush-hours, the light sources will emit a dedicated color (e.g., yellow), as opposed to other times wherein green light will be employed to indicate free use.
  • a dedicated color e.g., yellow
  • green light will be employed to indicate free use.
  • Yet another possible application, which is most applicable for highways is to have the markers indicate coming vehicles of a road block ahead due, for example, to road construction or an accident. Controlling the markers may be manual, from a control center or by dedicated sensors, as further detailed hereinbelow.
  • sensors designed to sense non-moving objects in their field of operation are employed with the road markers system to control the system such that when a non-moving object is sensed by the sensors, e.g., following a car accident, a dedicated light pattern (e.g., blinking red light pattern) is initiated to indicate coming vehicles of the accident ahead.
  • a dedicated light pattern e.g., blinking red light pattern
  • Optional sensors are described hereinbelow in greater detail with respect to Figure 7.
  • Yet another application is to have the road markers arranged across the road, e.g., along a stopping line, a crosswalk or a road intersection, blink in red when the red light of a traffic-light is on, and turn green (or blinking yellow) when the red light of the traffic-light changes to green.
  • Constantly red or blinking red markers can be deployed across road intersections where no traffic lights are available to indicate drivers of a dangerous road intersection.
  • a sensor e.g., underground pressure sensor, above ground infrared sensor, etc., see also the descriptions below relating to Figure 7
  • the walker when a walker is intending to cross or crossing the crosswalk, the walker is sensed by the sensor and the sensor then commands the markers to generate a dedicated pattern of light, say, to blink in red, to alert coming vehicles of the situation.
  • a manual operation system manually operated by the walker can alternatively, yet less preferably, be employed.
  • the road markers are arranged across the road, along a stopping line before an intersection with a railroad. In this case, the markers are, for example, emitting red light (e.g., blinking red light) when a train approaches the intersection and a green or yellow light or no light at all when the intersection in clear.
  • the road markers are preferably controlled by sensors that sense the approach and departure of a train, which sensors are located at safety distances from the road on or close to the railroad. Such sensors are well known in the art and require no further description herein.
  • the markers may also be used as guides to guide drivers to specific lanes, e.g., when entering a freeway or when the road is under construction.
  • adjacent road markers are spaced from one another from about one to about twenty meters.
  • system 70 is employed to mark local road features and road crossing features, such as a crosswalk.
  • System 70 includes a power source 76.
  • source 76 is a 12 V battery.
  • source 76 may alternatively be an electrical net (e.g., the municipal net) or a solar (photoelectric) cell.
  • a road marking system 80 which includes a strap 82 along which a plurality of active, light emitting road markers 84 are permanently fixated or integrally formed.
  • Strap 82 may serve to harbor all of the wiring required for providing the markers with power and to control their operation.
  • Strap 82 is preferably made of an elastic yet resilient material, such as polyurethane, and may be acquired any suitable color, such as white, yellow or orange colors.
  • the strap may be rolled for storage and shipping. When implemented, the strap is unrolled and it is permanently affixed along or across a road, e.g., nailed, screwed or glued to the road using, for example, bitumenic glue.
  • the strap can thereby replace the lanes separation and/or margin lines typically painted along and across roads and lanes and further provide an active marking system.
  • the strap may be covered by small glass beads which will render it light reflective.
  • a parking system 90 to be implemented in a parking lot 92 having a plurality of parking places 94 and at least one optional turning point 96 where a turning decision is to be made.
  • System 90 includes a plurality of active light emitting road markers 98.
  • Each of the plurality of active light emitting road markers includes at least one light source (see Figures 5 a and 5b) and is supplied with power for enabling emission of light.
  • the plurality of active light emitting road markers 98 are arranged in routs leading from the optional turning point 96 to at least some, preferably all, of parking places 94.
  • System 90 further includes a plurality of sensors 100. Each of sensors
  • Suitable sensors are underground sensors (e.g., inductive, microwave or load sensors) or photoelectric sensors (e.g., infrared sensors). Suitable sensors of various types are distributed by Telemechanique Inc. Owings Mills, 100065 Redrun Blvd. 21117 MD.
  • System 90 further includes a control unit 102 electronically communicating with the plurality of sensors 100 and the plurality of active light emitting road markers 98.
  • Control unit 102 serves for operating one of the routs of light emitting road markers, e.g., the rout indicated by dark marks in Figure 1, for marking a path leading to an available parking place 94.
  • two such guiding systems are employed, each emitting light of a different color, one is for guiding vehicles to free parking places, whereas the other is for directing vehicles to the exit of the parking lot or to a free cashiers.
  • a similar system may be used to direct vehicles to free cashiers implemented in the entrances and exits of toll roads.
  • the plurality of road markers may be implemented along the floor of the parking lot, however, similarly, they can be implemented along the walls and/or ceiling thereof.
  • a road marking method includes the following steps.
  • a plurality of active light emitting road markers are permanently fixated along at least a section of a road.
  • Each of the plurality of active light emitting road markers includes at least one light source.
  • each of the plurality of active light emitting road markers is supplied with power for allowing emission of light from the light sources.
  • the plurality of active light emitting road markers are operated, such that, at a given time, at least one, preferably, at least a group, of the active light emitting road markers emits light.
  • Permanently fixating the road markers is preferably effected by a process selected from the group consisting of nailing, gluing and screwing.
  • Gluing is preferably effected by a bitumenic glue.
  • permanently fixating the road markers is effected by connecting the markers to a strap and attaching the strap along the road.
  • the supply of power is preferably effected by forming a slit along the road and placing a cable including the required wires in the slit.
  • the cable (or wires) provides the plurality of active light emitting road markers with power for operation.
  • the plurality of active light emitting road markers emit light in a synchronized pattern.
  • such wires are preferably arranged into a cable which is preferably protected from damages by being placed underground or underneath a strap, when the latter is employed.
  • a control unit serves to generate and control the desired light patterns or effects.
  • Two prefered types of control units can be employed as further described below.
  • all markers 110 are electrically connected in parallel to a cable 112 including a power supply wire 114 (e.g., 12 V) and a ground wire 116, such that all markers 110 receive power.
  • a power supply wire 114 e.g., 12 V
  • a ground wire 116 e.g., 12 V
  • each marker 110 is further connected to a communication wire 120, itself connected to and controlled by a parallel to serial converter 122 (e.g., Motorola MC14013), an address generator 124 (e.g., Motorola, MC14518) and a timer 126 (e.g., Motorola, MC1555).
  • a parallel to serial converter 122 e.g., Motorola MC14013
  • an address generator 124 e.g., Motorola, MC14518
  • a timer 126 e.g., Motorola, MC1555
  • each of markers 110 includes an address decoding chip (decoder, see Figure 4b) and a serial to parallel converter, which collectively serve for decoding and reconverting the address provided by converter 122 and generator 124, and thereby allow the operation of the associated light source.
  • address decoding chip decoder, see Figure 4b
  • serial to parallel converter which collectively serve for decoding and reconverting the address provided by converter 122 and generator 124, and thereby allow the operation of the associated light source.
  • control unit further includes an amplitude modulation unit 118.
  • wire 114 further serves to carry amplitude modulated information
  • wire 120 is omitted
  • each of markers 110 further includes a demodulation circuit including, for example, a bridge-rectifier and a diode.
  • a cable 130 including n (e.g., 12) wires is employed to control groups (A, B, C ...) of n-2 markers 132 each (e.g., 10: 1 through X, not all markers are shown, as indicated by breaking marks 134).
  • One wire 136 is grounded, n-2 wires 138a-j are connected in parallel to markers I - X, respectively, of groups A, B, C ... of markers 132.
  • a counter/decoder unit 140 e.g., Motorola, MC14017
  • a timer 142 e.g., Motorola, MCI 555
  • the markers and systems according to the present invention enjoy two major advantages as is compared with prior art passive markers.

Abstract

L'invention porte sur un système luminescent (70) de marquage routier (60) comportant une série de marques photoémettrices actives (40) fixées en permanence selon une certaine disposition sur une voie de circulation (60). Chacune desdites marques (40) contient au moins une source lumineuse (44) dotée d'une alimentation pour permettre l'émission de lumière.
EP98934322A 1997-07-29 1998-07-13 Systeme photoemetteur actif de marquage routier Withdrawn EP1012400A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US90247997A 1997-07-29 1997-07-29
US902479 1997-07-29
PCT/US1998/014156 WO1999006636A1 (fr) 1997-07-29 1998-07-13 Systeme photoemetteur actif de marquage routier

Publications (2)

Publication Number Publication Date
EP1012400A1 true EP1012400A1 (fr) 2000-06-28
EP1012400A4 EP1012400A4 (fr) 2004-03-10

Family

ID=25415923

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98934322A Withdrawn EP1012400A4 (fr) 1997-07-29 1998-07-13 Systeme photoemetteur actif de marquage routier

Country Status (5)

Country Link
EP (1) EP1012400A4 (fr)
AU (1) AU8387398A (fr)
CA (1) CA2300291A1 (fr)
IL (1) IL134250A0 (fr)
WO (1) WO1999006636A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2823830B1 (fr) * 2001-04-23 2004-01-02 Inst Pharma De Rech Applic Et Plot lumineux
FR2826101B1 (fr) * 2001-06-18 2004-01-09 Paul Marcel Bernard Reflecteur mixte trapezoidal
WO2003034369A2 (fr) * 2001-10-19 2003-04-24 Hutchins J Marc Systeme informationnel mettant en oeuvre des ensembles de messages lumineux pour fournir des informations de direction et d'orientation sur des voies de circulation
US6602021B1 (en) * 2002-01-14 2003-08-05 Kwung-Chul Kim Pavement marker and method for manufacturing the same
DE102004059390B4 (de) * 2004-12-09 2013-01-03 Frederick Young Fahrbahn-Sicherheitssystem
ITMO20090241A1 (it) * 2009-10-02 2011-04-03 Giorgio Corradi Elemento strutturato per segnaletica stradale orizzontale e/o laterale.
AT509632B1 (de) * 2010-03-23 2012-08-15 Swarovski D Kg Beleuchtungsanlage mit induktiven beleuchtungseinrichtungen
US20130271014A1 (en) * 2010-11-16 2013-10-17 3M Innovative Properties Company Internally Illuminated Pavement Marker
GB201104009D0 (en) * 2011-03-09 2011-04-20 Sharing Alfred Indication system for railways and roads
CN102653939B (zh) * 2012-05-21 2014-07-02 武汉理工大学 用于改善高速公路弯道路段行车安全的反光灯设置方法
CN102747697B (zh) * 2012-07-11 2014-07-02 武汉理工大学 一种用于减少高速公路追尾事故的自发光道灯设置方法
FR3034009B1 (fr) * 2015-03-24 2019-07-12 Auriol Frappe A Froid Clou podotactile lumineux
US11288959B2 (en) 2017-10-31 2022-03-29 Bosch Automotive Service Solutions Inc. Active lane markers having driver assistance feedback

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996002970A1 (fr) * 1994-07-13 1996-02-01 Auckland Uniservices Limited Bloc d'eclairage a alimentation inductive
DE19505223A1 (de) * 1995-02-16 1996-08-22 Dieter Dr Med Heimann Leiteinrichtung für einen Parkplatz für Kraftfahrzeuge

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3836275A (en) * 1972-03-31 1974-09-17 D Finch Roadway marker device
US4050834A (en) * 1976-02-04 1977-09-27 Minnesota Mining And Manufacturing Company Internally powered traffic control device
DE3942070A1 (de) * 1989-12-20 1991-06-27 Deutsche Lufthansa Vorrichtung zur verwaltung einer vielzahl von kraftfahrzeugen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996002970A1 (fr) * 1994-07-13 1996-02-01 Auckland Uniservices Limited Bloc d'eclairage a alimentation inductive
DE19505223A1 (de) * 1995-02-16 1996-08-22 Dieter Dr Med Heimann Leiteinrichtung für einen Parkplatz für Kraftfahrzeuge

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9906636A1 *

Also Published As

Publication number Publication date
CA2300291A1 (fr) 1999-02-11
WO1999006636A1 (fr) 1999-02-11
EP1012400A4 (fr) 2004-03-10
IL134250A0 (en) 2001-04-30
AU8387398A (en) 1999-02-22

Similar Documents

Publication Publication Date Title
US10253468B1 (en) Pavement marker modules
US6384742B1 (en) Pedestrian crosswalk signal apparatus—pedestrian crosswalk
US3996556A (en) Light emitting marker for roadway pavements, for traffic safety
AU2015295106B2 (en) Ground level illumination system
US7429919B2 (en) Multi-purpose wireless communication device
US9959754B1 (en) Pavement marker modules
EP1012400A1 (fr) Systeme photoemetteur actif de marquage routier
AU2007256693A1 (en) Flashing beacon
WO2005024135A1 (fr) Systeme de signalisation horizontale sur des routes
US20150330040A1 (en) Roadway delineator and safety system
JP2023126787A (ja) 発光シグナリングスラブ及びそのようなスラブを使用可能なシステム
US20070012237A1 (en) Pedestrian cross walk marker
KR200208098Y1 (ko) 도로표시구
JP2000319834A (ja) 道路用防護柵
WO2013117887A1 (fr) Système de plot et de sécurité
KR100676847B1 (ko) 반사겸용 led 도로 표지병 시스템
KR101485778B1 (ko) 안전 유도 표시 장치
JPS6117610A (ja) 表示線用発光ブロツク
US20040027828A1 (en) Indication apparatus using beam
WO2019097267A1 (fr) Procédure et agencement pour l'éclairage sûr de passages pour piétons
KR20000017885U (ko) 운전자 시선유도표지
KR100482302B1 (ko) 스쿨존의 교통신호장치
KR200307803Y1 (ko) 횡단보도 및 정지선용 안전 표지병
KR20100088800A (ko) 발명의 명칭 : 교통신호등을 연계한 지면식 안전 신호장치및 신호방법
KR200274499Y1 (ko) 테이프형 라이트 라인

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20000225

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

A4 Supplementary search report drawn up and despatched

Effective date: 20040123

RIC1 Information provided on ipc code assigned before grant

Ipc: 7G 08G 1/14 B

Ipc: 7E 01F 9/08 B

Ipc: 7E 01F 9/06 B

Ipc: 7E 01F 9/03 B

Ipc: 7E 01F 9/016 A

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20040203