WO1989007544A1 - A marking system for traffic lines - Google Patents
A marking system for traffic lines Download PDFInfo
- Publication number
- WO1989007544A1 WO1989007544A1 PCT/DK1989/000038 DK8900038W WO8907544A1 WO 1989007544 A1 WO1989007544 A1 WO 1989007544A1 DK 8900038 W DK8900038 W DK 8900038W WO 8907544 A1 WO8907544 A1 WO 8907544A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- markers
- road
- train
- relevant
- marker
- Prior art date
Links
- 239000003550 marker Substances 0.000 claims abstract description 11
- 238000004891 communication Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000000007 visual effect Effects 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 230000011664 signaling Effects 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 241001669679 Eleotris Species 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
- B61L25/021—Measuring and recording of train speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
- B61L25/025—Absolute localisation, e.g. providing geodetic coordinates
Definitions
- a marking system for traffic lines is provided.
- the present invention relates to a marking system for marking length units along road stretches, be it normal roads or rail roads, principally for kilometering marking.
- markers which are placed by or under the concerned road stretch at the desired marking places in such a manner that driving past these markers, which may be placed at every kilometer or any other appropriate length unit, will produce a counter signal in a detecting equipment in the driving car or train.
- the markers usable for this purpose may be of the type disclosed in EP-B-0 090 021, i.e. electromagnetically functioning markers, which may be placed once and for all underground below the concerned road stretch and thereafter be detectible by every passage of a car carried detector equipment.
- a simple data unit may be used on which a known starting point may be read in manually or auto ⁇ matically, and to which a trip counter is coupled such that an automatic recording of the relevant areas or road stretches may be obtained simply by activating a button on the unit.
- a reading out of the relevant points or road stretches at a subsequent search may be effected by signal emission from the unit from the previously read-in data.
- markers For measuring done on highways it will normally be sufficient to mount markers for every kilometer, even though it may also be relevant to have a marker for e.g. only every two, five, or ten kilometers, while in connection with railroads, where the trip counter function is less accurate, it may be relevant to place a marker e.g. for every 100 metres. The markers may be placed correctly even where it is impossible to place visual markers, e.g. at road intersections.
- the markers may be placed as regular fixpoints at a relatively great depth and in connection with railroads at least underneath the roadbed of the permanent way track, as this roadbed may need to be cleaned or modified.
- the markers are active without any external wire connections, and thus, e.g. when placed in railroad sleepers, they will in no manner obstruct work on the roadbed. Thereby the markers cannot be used as fixpoints, as they may easily be slightly displaced, but these displacements will seldomly be large enough to have any consequence for the accuracy required in connection with the kilometering function.
- each marking may comprise one or more markers in the transverse zone which represents a kilometering spot, or a single marker in the middle of each occurring road lane, respectively.
- the passive resonance markers may well be detected even when overrunning them at a speed of several hundreds of kilometers per hour, such that they may function as kilometering or tachometering markers with a reasonable reliability.
- passive resonance markers but at an even higher degree to active markers of the said type, that their radiation may be modulated individually, e.g. by means of so-called PROM-units, such that they may be detected not only with respect to their presence, but also with respect to their identity, and especially in connection with markings on railroads it will hereby be of great importance that not just tachometering markers are concerned, but markers which in a selective manner give information about the kilo ⁇ meter number they represent, as hereby the possibility of faulty tachometering is completely removed.
- identification markers and pure tachometering markers e.g. with the latter placed for each 100 metres between each pair of identifying kilometer markers.
- This aspect of the invention is of special interest in connection with automatic train control systems, by which there has until now been a dependency of the need to register the actual arrival of the train at a given position by means of external means such as rail switches or the said balises, whereby it has then been possible - by means of optical signals on the rail or by signal transmission between the balises on the train and the rail, respectively - to give instructions to the train driver.
- external means such as rail switches or the said balises
- the very special condition occurs that the train itself, i.e. its data unit, is permanently kept informed of the position of the train on a given road stretch, without any wiring whatsoever occurring along or across the roadbed; in this connection it is of no importance whether the markers are placed in the sleepers or in the berm under ⁇ neath the roadbed, as in both cases reconditioning work can be done unhinderedly on the roadbed.
- the only element missing for effecting a control function is a communication connection, but this may perfectly well be established without using wires touching the roadbed, e.g. already by a radio connection between the train and a control center.
- a communication system may also be established from the consideration that a brief communication connection will be needed only by particular substretches, and by or along these substretches there may then be placed special communi ⁇ cation means of only purely local range, e.g.
- a local radio system which is wire connected to a principal control center or to an induction loop system which over a short stretch extends along the driving track of the train near the train side, but carried by support means mounted outside the berm or the roadbed; there may then be placed means at the concerned train side (or at both train sides) for electromagnetic communication with the elongated stationary loop.
- Fig. 1 is a map view of a city with roads radiating therefrom
- Fig. 2 is a top view of a highway provided with kilometering markers
- Fig. 3 is a perspective view of a railroad stretch
- Fig. 4 is a perspective view of a stretch of Fig. 3 in a smaller scale.
- the city shown in Fig. 1 is designated by 2, and by 4 it is indicated that the city has a traffic junction being the center of kilometer measuring on highway stretches 6, which radiate from or to the city area 2.
- a traffic junction being the center of kilometer measuring on highway stretches 6, which radiate from or to the city area 2.
- markers 8 of the electromagnetic resonance type, which in being passed by an appropriate detector equipment may be detected for activating a counter in a data equipment in a measuring or inspection car, such that this equipment may currently count the number of passed markers, while a trip counter may effect a registration or indication of the partial stretches or lengths between the markers 8.
- the inspection or searching car must not necessarily leave from the junction 4, as e.g.
- special starting markers 10 may be placed in the single radiating roads 6, which starting markers may be designed to emit a special modulated starting signal, which in the passing detector and data equipment brings forth an "indication" corresponding to the concerned distance to the junction 4, whereafter the kilometering markers 8 are registered with a correct distance to the junction 4.
- the markers 8 are placed between the road surfaces, possibly just bedded shortly below these, and in Fig. 3 it is shown that in a two-lane road these markers may be placed in a common transverse line of the road so as to define a kilometering point, whichever direction along the road a car is taking. These points will then be detected by a data equipment in such a car which is equipped with a detector for passing the marking spots and thereby for receiving the signals which the markers emit or are caused to emit by the very passage of the car.
- the markers 8 should be laid out or placed with a good accuracy, which will typically be a qualified surveyor's job. Where the road is winding, such as it is shown in Fig. 2, it may be desirable by poor sight conditions to place further markers 12 in the road or right next to this for enabling a visual contact with the next kilometering point 8.
- additional markers 12 may optionally be constituted by temporarily placed ranging poles, but they may very advantageously be constituted by subterranean markers corresponding to the markers 8, as hereby the entire marking system may easily be subjected to a control measuring at any later moment.
- intermediate markers 12 may well be adapted to a totally different frequency than the main markers 8, but they may still potentially activate the passing detector, and it may therefore be relevant to let this be operative only at the expected moments of passage of the markers 8. Likewise, it may be relevant for a subsequent searching operation to place markers e.g. for every 500 meters, while for the driving to the relevant place it will be undesirable to register these half-kilometer markers.
- Fig. 3 it is shown that along a railroad stretch kilometering markers 14 may be placed down in the road's berm basis 16 for the superjacent roadbed 18, and that furthermore markers 20 may be placed in connection with the rail sleepers 22 at selected spots between the kilo ⁇ metering markers 14, e.g. for every 100 meters between these. As shown in Fig. 4 these markers 20 may be placed in bores in the sleepers 22, and as mentioned above also the primary kilometering markers 14 could well be placed in this manner.
- a communication connection may be established between the train or its data unit and the stationary surroundings of the train, and in Fig. 3 this is illustrated by a communication loop 24 being placed along a part of the rail stretch and being carried by masts 26 placed outside the roadbed 18, this loop being able to cooperate with a sidewise turned sender/receiver equipment on the train.
- Such loops may be placed at strategic places where it may be relevant to convey information, e.g. instructions for lowered driving speed along an upcoming partial stretch; the detector and control unit of the train may then itself identify the concerned stretch with good reliability, especially when the kilometering markers as mentioned above are of a self-identifying type.
- the data unit of the train via the rail or in a wireless manner, conveys the position of the train to a control center in which an absolutely correct image of the position of the train may be produced; this may be used for security by both visual and automatic control, and at least if the markers are placed reasonably closely, e.g. for every 100 meters, also the speed of the train can be indicated in the control center.
- markers may be used locally be for zero resetting the counter equipment of the trains.
- these markers may be particularly powerful, as they may well have an external power supply when placed e.g. underneath the roadbed.
- such markers may be adapted to become operative only when they are activated by a field which is radiated by a trigger unit in the train, and thereafter to remain active only for a short while, e.g. for a position reporting repeated a number of times, e.g. 3-10 times.
- the reporting code may well be emitted and received several times even during a fast passing of the marker.
- the invention may be used also in connection with further types of tracks, e.g. runways for aeroplanes, where it is necessary that the pilot or a control computer in the plane is informed of the position and the speed of the plane on the runway.
- further types of tracks e.g. runways for aeroplanes
- the pilot or a control computer in the plane is informed of the position and the speed of the plane on the runway.
- the disclosed position reporting markers such information will be automatically collectible, and * also here this information will be trans ittable externally, such that an indication of the speed and exact position of the plane on the runway may be produced e.g. in a control tower.
- the markers may be usable, e.g. also as stop line markers, where the plane should be stopped, optionally automatically, if there is no permission to continue.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK85688A DK85688D0 (en) | 1988-02-19 | 1988-02-19 | MARKING SYSTEM |
DK856/88 | 1988-02-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1989007544A1 true WO1989007544A1 (en) | 1989-08-24 |
Family
ID=8098310
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DK1989/000038 WO1989007544A1 (en) | 1988-02-19 | 1989-02-20 | A marking system for traffic lines |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0414693A1 (en) |
AU (1) | AU4031689A (en) |
DK (1) | DK85688D0 (en) |
WO (1) | WO1989007544A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19729990A1 (en) * | 1997-07-12 | 1999-01-14 | Alsthom Cge Alcatel | Traversed distance and/or speed determination method for rail-bound vehicle |
EP2439123A3 (en) * | 2010-10-07 | 2013-10-23 | Deutsches Zentrum für Luft- und Raumfahrt e. V. | Method for determining information coded in the railway track |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2426340B (en) * | 2005-05-20 | 2009-05-13 | Sperry Rail | Apparatus and method for the detection of defects in rails |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2739231B2 (en) * | 1977-08-31 | 1979-07-12 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Device for self-tracking of track-bound vehicles |
DE2539241B2 (en) * | 1975-09-03 | 1980-04-30 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Device for central location monitoring of vehicles in a transport network, e.g. urban buses |
DE3118421A1 (en) * | 1981-05-09 | 1982-12-02 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Device for securing and controlling rail vehicles |
DE3016480C2 (en) * | 1980-04-29 | 1988-08-04 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt, De |
-
1988
- 1988-02-19 DK DK85688A patent/DK85688D0/en not_active Application Discontinuation
-
1989
- 1989-02-20 WO PCT/DK1989/000038 patent/WO1989007544A1/en not_active Application Discontinuation
- 1989-02-20 AU AU40316/89A patent/AU4031689A/en not_active Abandoned
- 1989-02-20 EP EP19890903114 patent/EP0414693A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2539241B2 (en) * | 1975-09-03 | 1980-04-30 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Device for central location monitoring of vehicles in a transport network, e.g. urban buses |
DE2739231B2 (en) * | 1977-08-31 | 1979-07-12 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Device for self-tracking of track-bound vehicles |
DE3016480C2 (en) * | 1980-04-29 | 1988-08-04 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt, De | |
DE3118421A1 (en) * | 1981-05-09 | 1982-12-02 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Device for securing and controlling rail vehicles |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19729990A1 (en) * | 1997-07-12 | 1999-01-14 | Alsthom Cge Alcatel | Traversed distance and/or speed determination method for rail-bound vehicle |
DE19729990B4 (en) * | 1997-07-12 | 2010-12-16 | Alcatel Lucent | Method and device for determining the distance covered and the speed of rail vehicles |
EP2439123A3 (en) * | 2010-10-07 | 2013-10-23 | Deutsches Zentrum für Luft- und Raumfahrt e. V. | Method for determining information coded in the railway track |
Also Published As
Publication number | Publication date |
---|---|
EP0414693A1 (en) | 1991-03-06 |
DK85688D0 (en) | 1988-02-19 |
AU4031689A (en) | 1989-09-06 |
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