EP2038158A1 - Vorrichtung zum orten eines an einen fahrweg gebundenen fahrzeugs - Google Patents
Vorrichtung zum orten eines an einen fahrweg gebundenen fahrzeugsInfo
- Publication number
- EP2038158A1 EP2038158A1 EP06775689A EP06775689A EP2038158A1 EP 2038158 A1 EP2038158 A1 EP 2038158A1 EP 06775689 A EP06775689 A EP 06775689A EP 06775689 A EP06775689 A EP 06775689A EP 2038158 A1 EP2038158 A1 EP 2038158A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- scanning means
- individual sensors
- reference mark
- travel
- sensors
- 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.)
- Granted
Links
- 239000003550 marker Substances 0.000 abstract 1
- 238000011156 evaluation Methods 0.000 description 15
- 230000000737 periodic effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005339 levitation Methods 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 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
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000010363 phase shift Effects 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
- B61L25/026—Relative localisation, e.g. using odometer
Definitions
- the invention relates to a device for locating a bound to a track vehicle with reference marks, which are mounted on the guideway, and arranged in the vehicle sensing means which generate at least one output signal when passing a reference mark.
- a locating system of a rail-guided vehicle includes, for example, a beacon installed in the track area as a reference mark, the balise being sampled inductively by scanning means arranged in the train, so that the scanning means generate a location-dependent output signal.
- a location system is suitable for the operation control system, but not for driving control, for example, a magnetic levitation vehicle, since the location information must be available constantly and in real time to control the drive.
- the object of the invention is to provide a device of the type mentioned, which provides reliable location information and is inexpensive.
- the invention achieves this object in that the scanning means are composed of a plurality of individual sensors and extend in the direction of travel with a scanning medium length which is equal to or greater than the reference mark distance of adjacent reference marks.
- the scanning means are dimensioned so that they are constantly set up for reading the reference marks.
- the scanning means are just as long or longer than the distance between two reference marks. It thus comes within the scope of the invention to a permanent location information even at slow driving or at a standstill of the vehicle.
- these are composed of individual sensors, wherein the individual sensors are read out individually or interconnected in a suitable manner, so that the composite of the individual sensors
- Scanning generate a single sum signal.
- a control device is used to read out the output signal (s) by means of a sampling unit to obtain samples and to digitize the sampled values by means of an analog / digital converter or acquisition of digital output signal values.
- the digitized output values are then subjected to further evaluation steps, as will be explained in more detail below.
- the scanning means length is a multiple of the reference mark distance.
- the evaluation of the results downstream of the reading of the reference marks is simplified.
- the individual sensors are arranged in succession in at least one sensor row, which extends in the direction of travel. Due to the rod-shaped design of the scanning and the orientation of the longitudinal axis of this rod in the direction of travel, a particularly inexpensive scanning is provided, since in this way for a given length of the scanning the maximum distance of the reference marks is possible.
- side by side or successively arranged individual sensors generate when crossing a reference mark output signals with different signs.
- the individual sensors have a different winding sense.
- different signs can also be realized with other measuring principles.
- all measurement principles suitable for non-contact detection of the reference marks can be used.
- a periodic output signal of the scanning means is generated according to this advantageous development of the invention, wherein by simply counting the maxima and minima of the periodic output signal, a location information is available.
- the periodic output signal of the scanning means has a wavelength which is twice as large as the dimension of the reference mark just passed. It is of course expedient if all reference marks are designed and dimensioned equal.
- the individual sensors are arranged in two rows of sensors adjacent to each other, which extend in the direction of travel, the sensor rows in the direction of travel by an offset from one another offset and the offset is equal to half of the reference mark design in the direction of travel.
- the sum signal of each sensor row is read out individually and fed to a control device or an evaluation device.
- two periodic output signals are obtained, which are phase-shifted by 90 ° to each other.
- this information for example, using the ArcusTangens2 function, it is possible to calculate the angle from which exact location information of the vehicle can be derived.
- the direction of travel it is possible in a simple way to determine the direction of travel.
- the number of measured reference marks or the number of overrun periods can be derived in a simple manner. In this way, all measured values necessary for the control system are provided in real time for the drive system.
- the rows of sensors for example, are arranged next to one another in a plane aligned parallel to the track. However, the sensor rows can also be arranged one above the other with respect to the travel path, but the requirements for the evaluation electronics are increased.
- individual sensors arranged next to one another generate output signals with the same sign when a reference mark is passed over, and an individual sensor signal can be detected by each individual sensor.
- an almost identical output signal is transmitted by the evaluation unit at different points in time, which however originates from different individual sensors.
- the evaluation unit has informational data. Based on the information data can be determined at what time the output signal is recorded and from which or which individual sensors the output signal comes. The calculation of the speed is then based on a correlation.
- the evaluation device first attempts to bring the output signals of the individual sensors recorded at different times into coincidence with one another. This succeeds within the measuring accuracy of the individual sensors. Due to the known distance of the individual sensors, which generated the respective output signal, and based on the time difference between the times of reading the output signals, the evaluation determines the speed and transmits this speed, for example, a drive control, which is the parent of the evaluation.
- the reference marks are electrically conductive sleepers. These are arranged for example in the guideway. For example, these may be rail sleepers. Notwithstanding this, the thresholds are laid in the track of a magnetic levitation vehicle.
- the contactless scanning of the reference marks by the scanning means can be carried out on the basis of arbitrary measuring principles. In the context of the invention, however, the scanning takes place without contact.
- the individual sensors detect the position of the reference marks due to eddy current effects. In other words, the individual sensors work on eddy current base.
- the reference mark distance is greater than one meter.
- the number of reference marks that are laid in the guideway remains limited.
- FIG. 1 shows an apparatus for introducing the invention
- FIG. 2 shows an embodiment of the invention
- FIG. 3 shows a further embodiment of the invention
- Figure 4 shows a deviating embodiment according to the prior art
- FIG. 5 shows an embodiment of the invention deviating from the exemplary embodiments according to FIGS. 2 and 3.
- FIG. 1 shows a device 1 which is intended to make the invention easier to understand.
- the prior art device 1 comprises a scanning means 2 which is composed of two individual sensors 3, wherein the individual sensors 3 generate an output signal of opposite sign, as shown in the diagram below, in the ordinate 4, the output signal of the scanning means 2 is shown as a function of the path which is removed on the abscissa 5.
- the scanning means 2 is moved in the direction of the arrow 6 shown over a reference mark 7 away.
- a corresponding signal results when driving over the following reference mark 8.
- FIG. 2 shows a device 9 according to the invention.
- the device 9 according to the invention again comprises an order of successive reference marks 7 and 8.
- the scanning means 2 consists of a multiplicity of individual sensors 3 and has a length which is greater than the distance between the reference marks 7 and 8. In this way, it is ensured that the scanning means 2 according to the invention generates a continuous signal that can be used by a drive control for controlling the drive of a track-bound vehicle.
- the output signal of the scanning means 2 according to FIG. 2 results from a corresponding connection of the individual sensors as a sum signal 10 of the individual signals 11 of each individual sensor 3, the individual signals 11 being shown next to one another in the upper diagram and the sum signal 10 in the lower diagram of FIG , It can be seen that the sum signal 10 has a periodic profile, wherein the wavelength of the sum signal 10 is twice the length of the respective reference mark 7 or 8 in the direction of travel.
- the length of the scanning means 2 is equal to the distance between the reference marks 7 and 8, ie the reference mark spacing. In this way, there is always a sum signal 10 before.
- the scanning means 2 is connected to an evaluation unit, which samples the summation signal of the scanning means in order to obtain samples and converts the sampled values to obtain digital sampling values by means of an analog / digital converter. By counting the maximum of the periodic signal in a time interval, the speed of a lane-bound vehicle and thus of the scanning means anchored firmly to the lane-bound vehicle results.
- Figure 3 shows a most preferred embodiment of the invention. It can be seen that the scanning means 2 is composed of two rows of sensors 12 and 13, wherein each sensor row 12 or 13 extends in the direction of travel and wherein the individual sensors 2 are arranged side by side and rod-shaped.
- the sensor row 12 is offset from the sensor row 13 by a distance, ie an offset, counter to the direction of travel 6, wherein the offset is equal to half the length or the geometric dimensioning of the reference mark 7 or 8 in the direction of travel 6. Therefore, the sum signal 14 of the sensor row 13 is 90 degrees out of phase with the sum signal 10 of the sensor row 13, as can be seen from the representation 14 of Figure 3.
- the angle ex is determined from the measured sine or cosine function by simple trigonometric conversion, for example by forming the arc tangent 2 or by using the relationship that sine square plus cosine square is equal to 1 , With the angle ⁇ , a precise spatial resolution is available. Furthermore, it can be determined by the phase shift in which direction the track-bound vehicle or the scanning means are moved.
- the representation 15 of FIG. 3 shows an angle signal which has become customary in drive control as a function of time, the slope of the sawtooth curve corresponding to the speed of the vehicle.
- FIG. 4 shows a further locating system according to the prior art.
- the scanning means 2 here only has a single sensor, so that when the reference mark 7 is passed over, 8, an output signal 11 is generated with a positive sign.
- FIG. 5 shows a further exemplary embodiment of the device according to the invention, wherein a scanning means 2 cooperates with reference marks 7 and 8.
- the scanning means 2 has a plurality of individual sensors 3 which generate all the output signals 16 and 17 with the same sign.
- the individual sensors 3 are again arranged one behind the other in the direction of travel, so that a rod-shaped scanning means 2 is formed.
- FIG. 5 shows the position of the scanning means 2 relative to the reference marks 7 and 8 at two different times ti and t 2 . It is assumed that the scanning means 2 moves in the direction of the arrow 6. According to the exemplary embodiment shown in FIG. 5, the individual sensors 2 are not connected to form a sum signal. Rather, the output signal of each individual sensor 3 is detected separately by an evaluation device (not shown in FIG. 5). The output signals are sampled, as already stated, and the samples obtained thereon are converted to digital samples by means of an analog-to-digital converter. Subsequently, the evaluation device reassembles the digital sampled values obtained, so that an output signal 16 results at time t.sub.i, which is illustrated in the lower diagram of FIG.
- the ordinate 4 shows the transmitted intensity of the output signal 16 or 17 as a function of the location or path, which is plotted on the abscissa 5.
- the output signals 16 and 17 can also be understood as a sample image of the reference marks 7 and 8.
- the evaluation device now displaces the output signal 16 as far as on the axis 5 with the aid of an internal logic, until an as accurate as possible matching of the output signals 16, 17 or the images of the reference mark 7 sampled at different points in time is achieved within the measuring accuracy of the individual sensors 3.
- the displacement in the direction of the axis 5 can now be used to derive the path which the scanning means 2 traveled in the time interval 'between t 1 and t 2 . In this way, a speed can then be derived with which the scanning means, and thus the vehicle to which the scanning means 2 is fastened, moves in the direction of travel 6.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/DE2006/001189 WO2008003272A1 (de) | 2006-07-06 | 2006-07-06 | Vorrichtung zum orten eines an einen fahrweg gebundenen fahrzeugs |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2038158A1 true EP2038158A1 (de) | 2009-03-25 |
EP2038158B1 EP2038158B1 (de) | 2010-06-02 |
Family
ID=37882146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06775689A Ceased EP2038158B1 (de) | 2006-07-06 | 2006-07-06 | Vorrichtung zum orten eines an einen fahrweg gebundenen fahrzeugs |
Country Status (5)
Country | Link |
---|---|
US (1) | US8067933B2 (de) |
EP (1) | EP2038158B1 (de) |
CN (1) | CN101472778B (de) |
DE (1) | DE502006007134D1 (de) |
WO (1) | WO2008003272A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7532979B2 (en) | 2005-11-10 | 2009-05-12 | Tele Atlas North America, Inc. | Method and system for creating universal location referencing objects |
CN101700781B (zh) * | 2009-11-17 | 2011-11-30 | 武汉钢铁(集团)公司 | 一种判断列首车辆所在区间的系统及其判断方法 |
US8862395B2 (en) * | 2011-01-31 | 2014-10-14 | Raytheon Company | Coded marker navigation system and method |
US20130006482A1 (en) * | 2011-06-30 | 2013-01-03 | Ramadev Burigsay Hukkeri | Guidance system for a mobile machine |
EP2851262A1 (de) * | 2013-09-18 | 2015-03-25 | Bombardier Transportation GmbH | Antennenanordnung und Verfahren zur Bestimmung der absoluten Geschwindigkeit eines Schienenfahrzeuges |
GB201407643D0 (en) | 2014-04-30 | 2014-06-11 | Tomtom Global Content Bv | Improved positioning relatie to a digital map for assisted and automated driving operations |
EP3998456A1 (de) | 2015-08-03 | 2022-05-18 | TomTom Global Content B.V. | Verfahren und systeme zur erzeugung und verwendung von lokalisierungsreferenzdaten |
WO2017033150A1 (en) | 2015-08-26 | 2017-03-02 | Thales Canada Inc. | Guideway mounted vehicle localization system |
CN105501256B (zh) * | 2015-12-23 | 2017-05-31 | 中国铁道科学研究院通信信号研究所 | 一种中低速磁悬浮列车组合测速定位装置 |
US10499361B2 (en) | 2016-05-17 | 2019-12-03 | Huawei Technologies Co., Ltd. | Portable electronic device and positioning method |
CN105905134A (zh) * | 2016-06-07 | 2016-08-31 | 深圳航天科技创新研究院 | 一种轨道交通车辆精确测速系统和方法 |
FR3131893B1 (fr) | 2022-01-17 | 2024-04-26 | Urbanloop | Procede de localisation et/ou de mesure de vitesse d'un vehicule |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1595311A (en) | 1977-01-17 | 1981-08-12 | Gec General Signal Ltd | Railway signalling apparatus |
DE3200811A1 (de) | 1982-01-13 | 1983-07-21 | Siemens AG, 1000 Berlin und 8000 München | Einrichtung zur bestimmung des standortes eines spurgefuehrten fahrzeugs |
DE3382199D1 (de) * | 1982-02-10 | 1991-04-18 | Thyssen Industrie | Vorrichtung zur inkrementalen erfassung der fahrzeuglage eines magnetschwebefahrzeuges. |
CH661994A5 (de) | 1983-02-21 | 1987-08-31 | Jaeger Walter | Verfahren zur uebertragung von informationen und befehlen von einer bodenstelle auf ein schienenfahrzeug. |
FR2673901B1 (fr) | 1991-03-13 | 1994-05-20 | Inrets | Procede de localisation d'un vehicule roulant sur une voie de guidage et installation de localisation equipant un tel vehicule. |
JP2007501159A (ja) * | 2003-05-21 | 2007-01-25 | シーアホルツ−トランスリフト・シュヴァイツ・アクチエンゲゼルシャフト | 線路,転轍器及び磁歪式センサを有する輸送設備 |
DE102004015496A1 (de) * | 2004-03-26 | 2005-10-13 | Thyssenkrupp Transrapid Gmbh | Vorrichtung zur Erzeugung sicherer Zustandssignale von einem längs eines vorgegebenen Fahrwegs bewegbaren Fahrzeugs |
-
2006
- 2006-07-06 DE DE502006007134T patent/DE502006007134D1/de active Active
- 2006-07-06 WO PCT/DE2006/001189 patent/WO2008003272A1/de active Application Filing
- 2006-07-06 EP EP06775689A patent/EP2038158B1/de not_active Ceased
- 2006-07-06 US US12/307,680 patent/US8067933B2/en not_active Expired - Fee Related
- 2006-07-06 CN CN2006800550202A patent/CN101472778B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2008003272A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN101472778A (zh) | 2009-07-01 |
EP2038158B1 (de) | 2010-06-02 |
CN101472778B (zh) | 2011-10-19 |
DE502006007134D1 (de) | 2010-07-15 |
WO2008003272A1 (de) | 2008-01-10 |
US20090201012A1 (en) | 2009-08-13 |
US8067933B2 (en) | 2011-11-29 |
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