EP0955413A2 - Système d'avertissement pour le verglas - Google Patents

Système d'avertissement pour le verglas Download PDF

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Publication number
EP0955413A2
EP0955413A2 EP99108863A EP99108863A EP0955413A2 EP 0955413 A2 EP0955413 A2 EP 0955413A2 EP 99108863 A EP99108863 A EP 99108863A EP 99108863 A EP99108863 A EP 99108863A EP 0955413 A2 EP0955413 A2 EP 0955413A2
Authority
EP
European Patent Office
Prior art keywords
detector according
marking
ice detector
weight
ice
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Withdrawn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
EP99108863A
Other languages
German (de)
English (en)
Other versions
EP0955413A3 (fr
Inventor
Robert Dr. Brehm
Erhard Lengfeldner
Robert Pugh
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.)
Usp Transfers Industrielle Farbuebertragung GmbH
Original Assignee
Usp Transfers Industrielle Farbuebertragung GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Usp Transfers Industrielle Farbuebertragung GmbH filed Critical Usp Transfers Industrielle Farbuebertragung GmbH
Publication of EP0955413A2 publication Critical patent/EP0955413A2/fr
Publication of EP0955413A3 publication Critical patent/EP0955413A3/fr
Withdrawn legal-status Critical Current

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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
    • E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
    • E01F9/604—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings
    • E01F9/608—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings for guiding, warning or controlling traffic, e.g. delineator posts or milestones
    • E01F9/61—Special features of delineator posts, e.g. with parts cantilevered toward the roadway or fixed vertically on a tilted surface
    • 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
    • E01F9/40—Arrangements responsive to adverse atmospheric conditions, e.g. to signal icy roads or to automatically illuminate in fog; Arrangements characterised by heating or drying means

Definitions

  • the present invention relates to an ice warning device, in particular for attachment to a roadway or guide elements on the edge of a roadway.
  • Such an ice detector serves to alert drivers of black ice or ice formation so that they can adapt their driving behavior accordingly.
  • Display boards are known which generally span the street and are provided with changeable displays. These scoreboards are very expensive to build and maintain.
  • the ice detector comprises a marking applied on a contrast surface, which has a thermochromatic material which changes its optical properties at temperatures close to freezing point.
  • This ice detector is preferably installed directly on the road or on guiding elements on the edge of the road, such as guard posts or guardrails. Alternatively or additionally, attachment to the vehicle can be provided at a suitable location, such as on the exterior mirror.
  • the ice detector according to the invention is simple and inexpensive to manufacture. It can be easily retrofitted. A major advantage is that the ice detector according to the invention is independent of electronic devices.
  • the ice warning device according to the invention is also suitable for attaching to the roadway or at the edge thereof only for short sections exposed to black ice, since it is perceived by a driver before entering the respective section.
  • the ice detector according to the invention is not constantly active, but only at temperatures close to freezing point. It is preferably in the driver's immediate field of vision and, if active, is automatically noticed. There is therefore no fear of a waning of attention due to a habituation effect.
  • Another field of application of the ice detector according to the invention is in the construction sector.
  • components can be provided with the ice detector according to the invention in order to prevent them from being concreted at low temperatures.
  • the change in the optical properties of the marking preferably occurs at a temperature of approximately 1 ° C. to 2 ° C. At this temperature, the formation of black ice begins.
  • the marking is transparent at a temperature above 1 ° C. to 2 ° C. and opaque at a lower temperature, in particular black or red.
  • This embodiment has the advantage that the ice detector according to the invention is not perceived at temperatures above 1 ° C. to 2 ° C. Although it is present, it does not appear visually. Only when there is actually a risk of black ice does the ice warmer become opaque and change its color.
  • the contrast surface adjacent to the marking is kept in a contrasting color to the marking in the opaque state.
  • the marking thus stands out clearly from the adjacent area and is clearly visible to the driver.
  • the marking is made directly on an existing surface.
  • This surface can be a hard shoulder or a median strip of a roadway.
  • the marking can be attached to a carrier.
  • This carrier is preferably provided with an adhesive layer on the side facing away from the marking.
  • the ice warmer according to the invention can be produced in the form of a decal and can be quickly and easily stuck to the desired location.
  • the label-shaped decals can advantageously be in roll form.
  • thermochromatic material is advantageously added to a dye that is applied to the existing surface.
  • the thermochromatic material causes a complete color change of the dye even with very small proportions and can therefore be added to a known dye.
  • the optical properties of the marking and thus the optical properties of the dye change.
  • a road marking can be used, the color of which changes completely from white or yellow to red when there is a risk of black ice.
  • a control line can be quickly and easily applied, the optical properties, especially the color, of which change at temperatures near freezing.
  • the thermochromatic material is added to the dye, which is then applied to the existing surface as usual.
  • thermochromatic material a dye with the addition of the thermochromatic material and a dye without the addition of the thermochromatic material are applied alternately. This creates an alternating pattern when there is a risk of black ice, which is perceived well.
  • the background or the support of the marking preferably has a contrast surface made of a reflective or phosphorescent material. As soon as the marking changes, this reflective or phosphorescent material is covered. The marking becomes darker compared to the adjacent surface and can be clearly seen.
  • the marking can be designed as a positive or a negative.
  • the marking itself forms a pictogram which, for example, represents a stylized ice crystal. This ice crystal then appears dark against the adjacent surface.
  • the marking can be designed as a negative, so that it leaves an area in the form of a stylized ice crystal free on the substrate or support. When the marking is addressed, this area then appears brightly compared to the dark marking.
  • the marking is provided with a cover layer for protection against abrasion.
  • the cover layer is advantageously designed as a crystal-clear plastic film.
  • This plastic film can in particular consist of PET, PET-G, polycarbonate or PMMA. This plastic film provides excellent protection against abrasion without hindering the passage of light.
  • a UV absorber is provided for absorbing UV rays.
  • the UV absorber increases the photochemical stability of the thermochromatic material and ensures its color stability.
  • the UV absorber is arranged in the cover layer.
  • the marking made of thermochromatic material can then be produced independently of the UV absorber.
  • the UV absorber advantageously consists of 2-hydroxyphenyl triazine and preferably has a molecular weight of 650 to 658. This UV absorber provides high absorption and photochemical stability, especially in the nanometer range between 210 and 370 nm light wavelength.
  • the marking can be sprayed or printed onto the surface or the support.
  • a stencil can then be used to apply the marking, which is placed on the substrate or support to be marked. The marking is then applied and the template is removed again.
  • the marking is advantageously in the form of a microencapsulated system.
  • the envelope temperature can be set exactly from 1 ° C to 2 ° C.
  • a reflective layer consists of 21 to 39, preferably 30 parts by weight of aluminum-coated glass beads which are embedded in 49 to 91, preferably 70 parts by weight of crosslinkable ink based on clear acrylic.
  • a phosphorescent layer consists of 24 to 45, preferably 35 parts by weight of phosphorescent pigments and 45 to 84, preferably 65 parts by weight of crosslinkable ink based on clear acrylic.
  • the reflection behavior and the phosphor properties can be adjusted by varying the individual components.
  • FIG. 1 shows a street 10 with a roadway 11, a median strip 12, side strips 13, 14 and left and right guide posts 15, 16.
  • the left guide post 15 has two circular reflectors 17, while the right guide post 16 has a rectangular reflector 18.
  • the central strip 12, the side strips 13, 14 and the guide posts 15, 16 are provided with markings 19, 20.
  • the surface adjacent to the markings 19, 20 is designed as a contrast surface 26.
  • FIG. 2 shows an enlarged detail of a guide post 15.
  • the marking 20 is attached below the reflectors 17 on a contrast surface 26 and is designed as a positive. It is shown that the marking 20 is in the form of a stylized ice crystal which responds when the temperature falls below a certain level, in particular at temperatures below 1 ° C. to 2 ° C.
  • Figure 3 shows a median strip 12 which is provided with a marking 19.
  • This marking 19 like the marking 20, is designed as a positive.
  • a median strip 12 can include not only one but also several markings 19, as shown in FIG. 1.
  • FIGS. 4 and 5 show a marking 21 designed as a negative, which is attached to the reflector 17 of the guide post 15, which serves as a contrast surface 26.
  • the marking 21 leaves an area of the reflector 17 free which represents a stylized ice crystal. As soon as the temperature drops below 1 ° C to 2 ° C, the marking 21 becomes opaque and changes color. Thus, only the approximately ice-crystal-shaped area of the reflector 17 remains visible.
  • the light rays of the headlights of a vehicle sweep over the reflector 17. Only in the area not covered by the marking 21 are the light rays reflected.
  • the ice detector according to the invention is therefore very well perceptible.
  • the marking 21 is provided with a cover layer 22 for protection against abrasion.
  • FIG. 6 shows a further embodiment of a marking 19 which is attached directly to a base 23.
  • This marking 19 can be applied directly on the roadway 11, on the median strip 12 or the side strips 13, 14.
  • the mark 19 is sprayed or painted on, a template can be used.
  • a cover layer 22 is then applied to protect the marking 19.
  • This embodiment is applied directly to the base 23. It therefore takes on the temperature of the substrate 23 practically without adulteration, so that a reliable ice detector is created. Possible distortions caused by winds or warmer layers of air above the subsoil are completely excluded.
  • FIG. 7 shows two markings 19 which are attached to a carrier 24 together with a cover layer 22.
  • the carrier 24 is provided with an adhesive layer 25 on the side facing away from the markings 19.
  • the carrier 24 is preferably formed with the markings 19, the cover layer 22 and the adhesive layer 25 in the manner of a decal. It can easily be pulled off a carrier roll and attached to the desired location.
  • FIG. 8 shows the attachment of such a carrier to the base 23, the adhesive layer 25 not being shown to simplify the drawing.
  • the marking 19 reliably assumes the temperature of the substrate 23, so that incorrect measurements are practically impossible.
  • the carrier 24 and the background 23 are reflective or phosphorescent.
  • the marking 19 becomes opaque and turns black or red.
  • the color of the marking depends on the basic color of the background 23 or the support 24. It is chosen so that a good contrast to the surroundings 23 or the carrier 24 is achieved when the ice detector responds.
  • a carrier 24 is provided on one side with an adhesive layer 25 and on the opposite side with a reflector layer 28.
  • the adhesive layer 25 can be self-adhesive under the action of heat melt and then solidify or be chemically adhesive.
  • the reflector layer 28 consists of glass beads or is designed like a prism.
  • a marking 19 is applied to the reflector layer 28 and is covered by a cover layer 22 with UV absorber 27.
  • This structure can be produced as a film, as a laminating adhesive bond or as a fusion bond.
  • the film can then be wound up into a roll.
  • the UV absorber preferably has the following molecular structure:
  • FIG. 10 shows a view of a road 10 similar to FIG. 1.
  • the road 10 again has a roadway 11, a median strip 12 and side strips 13, 14.
  • the central strips 12 are formed entirely from a dye to which a thermochromatic material has been added. They therefore change color continuously at temperatures near freezing, as shown in FIG. 10.
  • the side strips 13, 14 are applied to the road 11 by a dye to which a thermochromatic material is alternately added or this addition has been dispensed with.
  • Correspondingly spaced markings 19 are formed.
  • thermochromatic material is added to a conventional dye.
  • This dye is then applied to the existing surface, for example a roadway 11, in a known manner.
  • the optical properties of the thermochromatic material change and thus the optical properties of the central strip 12 and the side strips 13, 14. This results in a reliable ice warning.
  • the ice detector according to the invention is reliable, simple and inexpensive to manufacture. It can be provided in the form of decals or sprayed onto a surface without difficulty and is therefore easy to retrofit. Electrical or electronic devices are not required.
  • the ice detector according to the invention is always in the driver's field of vision, but only responds when there is actually a risk of black ice. The habituation effects that occur earlier or later with conventional warnings are thus avoided or at least minimized.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Road Signs Or Road Markings (AREA)
EP99108863A 1998-05-04 1999-05-04 Système d'avertissement pour le verglas Withdrawn EP0955413A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19819817A DE19819817C2 (de) 1998-05-04 1998-05-04 Eiswarner
DE19819817 1998-05-04

Publications (2)

Publication Number Publication Date
EP0955413A2 true EP0955413A2 (fr) 1999-11-10
EP0955413A3 EP0955413A3 (fr) 2002-01-23

Family

ID=7866598

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99108863A Withdrawn EP0955413A3 (fr) 1998-05-04 1999-05-04 Système d'avertissement pour le verglas

Country Status (2)

Country Link
EP (1) EP0955413A3 (fr)
DE (1) DE19819817C2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007036740A1 (fr) * 2005-09-30 2007-04-05 Angus Craig Panneau avertisseur de danger et procede
GB2443876A (en) * 2006-11-15 2008-05-21 Alan John Haley Black ice warning sticker
GB2487982A (en) * 2011-02-12 2012-08-15 Blaine Leathem Temperature Sensitive Road Marking
GB2554681A (en) * 2016-10-03 2018-04-11 Richard Joseph Porcas Jack Roadside signage that indicates to the road user that the outside temperature is such that there is a risk of ice on the road
CN114214979A (zh) * 2021-12-21 2022-03-22 安徽省路桥工程集团有限责任公司 一种城市交叉路口多功能一体化杆件

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004044853A1 (de) * 2004-09-14 2006-03-16 Endress + Hauser Wetzer Gmbh + Co Kg Verfahren zur Ermittlung und Optimierung eines Reibwertes
DE102011111070B4 (de) 2011-08-18 2014-10-16 Audi Ag Verfahren zum Betreiben einer Sensoreinrichtung in einem Fahrzeug und Fahrzeug
DE102016011159A1 (de) 2016-09-08 2018-03-08 Imos Gubela Gmbh Reflektor

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2940205A1 (de) * 1979-10-04 1981-04-16 Karl-Gottfried Dr. 7000 Stuttgart Reinsch Vorrichtung zum warnen vor eisglaettegefahr
DE3224451A1 (de) * 1981-06-30 1984-03-08 Gerhard Dr. 7809 Denzlingen Meier Temperaturabhaengiger lichtreflektor, insbesondere zur glatteiswarnung im strassenverkehr
GB2118228A (en) * 1982-03-13 1983-10-26 Edward Raymond Stevens Hazard warning device
GB2189919A (en) * 1986-04-24 1987-11-04 Glyn Martin Dominy Temperature sensitive reflective marker or indicator
DE3836424A1 (de) * 1988-01-19 1989-07-27 Horst Merz Spezial-etikett oder aufdruck auf babyflaschen zur bestimmung der idealen trinktemperatur durch reversible farbton-aenderung
EP0593826B1 (fr) * 1991-04-09 1999-04-14 Swintex Limited Ensemble retroréfléchissant
GB2265630A (en) * 1992-04-04 1993-10-06 Stephen Long Temperature indicating road markings
DE9316648U1 (de) * 1993-08-09 1994-04-28 Heins, Ernst-Heinrich, Dipl.-Verw., 21614 Buxtehude Signaleinrichtung zur optischen Signalisierung von Glatteisgefahr durch thermisch veränderte Farbanzeige
GB2289707B (en) * 1994-05-18 1998-01-28 Michael Alan Ward Thermochromic indicator device
GB2299358A (en) * 1995-03-31 1996-10-02 Christopher Shields Temperature-sensitive reflective road marker

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007036740A1 (fr) * 2005-09-30 2007-04-05 Angus Craig Panneau avertisseur de danger et procede
GB2443876A (en) * 2006-11-15 2008-05-21 Alan John Haley Black ice warning sticker
GB2487982A (en) * 2011-02-12 2012-08-15 Blaine Leathem Temperature Sensitive Road Marking
GB2554681A (en) * 2016-10-03 2018-04-11 Richard Joseph Porcas Jack Roadside signage that indicates to the road user that the outside temperature is such that there is a risk of ice on the road
CN114214979A (zh) * 2021-12-21 2022-03-22 安徽省路桥工程集团有限责任公司 一种城市交叉路口多功能一体化杆件
CN114214979B (zh) * 2021-12-21 2022-12-13 安徽省路桥工程集团有限责任公司 一种城市交叉路口多功能一体化杆件

Also Published As

Publication number Publication date
EP0955413A3 (fr) 2002-01-23
DE19819817C2 (de) 2001-02-08
DE19819817A1 (de) 1999-11-18

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