EP0917515A2 - Einrichtung zur eigenortung eines spurgeführten fahrzeugs - Google Patents
Einrichtung zur eigenortung eines spurgeführten fahrzeugsInfo
- Publication number
- EP0917515A2 EP0917515A2 EP97933620A EP97933620A EP0917515A2 EP 0917515 A2 EP0917515 A2 EP 0917515A2 EP 97933620 A EP97933620 A EP 97933620A EP 97933620 A EP97933620 A EP 97933620A EP 0917515 A2 EP0917515 A2 EP 0917515A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- voltage
- reception
- line conductor
- phase
- level
- 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
- 239000004020 conductor Substances 0.000 claims abstract description 43
- 238000011143 downstream manufacturing Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
- 230000001960 triggered effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000000717 retained effect Effects 0.000 abstract 3
- 238000001514 detection method Methods 0.000 description 7
- 238000011156 evaluation Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
- B61L3/16—Continuous control along the route
- B61L3/22—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation
- B61L3/225—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation using separate conductors along the route
Definitions
- the invention relates to a device according to the preamble of claim 1.
- a device is known for example from DE-PS 11 76 698.
- This traction vehicle is inductively coupled with coupling coils to a line conductor laid in the track, via which it is supplied with data relevant for vehicle control from a remote control point.
- the coupling coils are at an angle of 90 ° to one another and to the line conductor loop at one
- This coil arrangement makes it possible to receive or send frequency-modulated messages from a central station even when crossing intersections. Furthermore, this coil arrangement makes it easy to determine exactly when the vehicle with its antennas passed a line crossing point.
- the phase position of the received voltages of the two coupling coils changes by 180 °, this phase shift being different for both antennas depending on the location. While the antenna oriented in the direction of travel already couples with the line conductor of the following section and receives signals from there with the phase rotated by 180 ° with respect to the previously received signals, the signal at the exit points in the opposite direction of travel oriented antenna, the receiving voltage can still be picked up based on the original phase position.
- the two phases can thus be compared with one another; from the temporarily simultaneous presence of opposite-phase receive voltages, it is concluded that a crossing point has been passed.
- a crossing point For the detection of a line conductor crossing point, however, not only the phase position of the two receiving voltages is evaluated, but also their amplitude, ie the amplitudes of both receiving voltages must have a certain minimum level so that a crossing point can be recognized.
- the object of the invention is to further develop the device according to the preamble of claim 1 so that even in vehicles with individual antennas or adjacent reception antennas coupled to the forward and return conductors of a line conductor, unambiguous detection of line conductor crossing points by evaluating the phase position of the Receive voltage is possible. With such a device, level drops caused by line conductor crossings can be clearly distinguished from level drops caused by transmission interference, loose contacts and the like.
- the invention solves this problem by the characterizing features of claim 1. Because the vehicle device records the then present phase position for a certain period of time at the time of a level reduction, it is possible when the received voltage rises again to determine the then current phase position of the received voltage with the to compare the recorded comparison phase position in order to arrive at a decision as to whether the level reduction by the
- FIG. 1 shows the principle of line conductor crossing point detection according to the prior art and in Figure 2 shows the principle of crossing point detection according to the present invention.
- the drawing in FIG. 1 shows a schematic representation of a section of a line conductor L laid between the rails of a track, not shown, through which a signal current flows in the direction of the arrow. This signal current builds up magnetic fields around the line conductor, which are picked up by crossed receiving antennas AI, A2 of a vehicle traveling on the track.
- AI crossed receiving antennas
- A2 crossed receiving antennas
- the reception voltage UA1 of one of the vehicle-side reception antennas drops when the vehicle antenna approaches the intersection, after which it rises again to the same value.
- the phase position of the received voltage changes by 180 ° because the line conductor sections arranged below the antenna are flowed through in different directions by the signal current in the adjacent sections. Because of the different orientation of the two receiving antennas on the line conductor, they temporarily receive signals in phase opposition when they pass a line conductor crossing point. These out-of-phase signals lead to reception-out-of-phase receiving voltages being available at the outputs of downstream receivers E1, E2.
- These receive voltages for crossing point detection are evaluated in a phase comparison device ⁇ .
- a discriminator D evaluates the amplitudes of the two received voltages at the same time. If the received voltages are above a predefined lower threshold value SW and phase comparison device ⁇ detects the existing against opposite-phase received voltages, it causes the
- the vehicle device has two receiving antennas A3 and A4 which are arranged next to one another and are coupled to the forward and return conductor of the line conductor loop L.
- the received voltages picked up by these are added in phase in a known manner in an adder A and switched to a receiver E3.
- the receiving voltage UA3 of the receiving antenna drops when passing an intersection and then rises again. In order to be able to make a statement as to whether the detected voltage rises when the received voltage rises again
- the vehicle device holds the phase position of the received voltage UA3 in a suitable manner or simulates it if it falls below a predetermined lower threshold value SW1. If the amplitude of the received voltage later exceeds a second threshold value SW2, a discriminator Dl triggers the activation of a phase comparison device ⁇ l, which compares the phase position of the current received voltage UA3 with the recorded phase position of the previously determined comparison voltage. If the two voltages are in phase opposition, this is proof that the voltage drop that occurred was caused by passing through a line conductor crossing point.
- the two threshold values at which the comparison phase is recorded or the comparison process is carried out can be the same, but the threshold value SW2 is advantageously above the threshold value SW1; this ensures that the comparison process does not actually take place until the received voltage has risen again.
- Discriminator D1 both falling below the predetermined first threshold value SW1 and exceeding the predetermined second threshold value SW2.
- the discriminator Dl causes the phase position measured at the receiver E4 to be recorded in a memory SP1 and, when the upper threshold value SW2 is recognized, the phase value stored in the memory SPl is compared with the phase position of the received voltage in the receiver E3 a phase evaluation device ⁇ l. If the current receive voltage and the stored reference voltage are out of phase, provided that the current receive voltage exceeds the predetermined upper threshold value SW2, an intersection mark K * is output and it simultaneously causes the phase value stored in the memory SP1 to be reset. The device is thus ready to react to the next drop in the received voltages in the same manner as described in more detail above.
- the memory SP1 has the phase position of the one it detects
- phase comparison device ⁇ l in a suitable form.
- the memory SPl z. B. represented by a flywheel oscillator, which when entering the vehicle in the line area (.Rising the receiving voltage above a given minimum level) on the frequency and by temporal evaluation of the amplitude maxima and minima in connection with the zero crossings of the reception voltage to the current phase position of the line conductor current is synchronized.
- This continuously synchronized flywheel oscillator provides signals that are representative of the phase position of the previously determined received voltage even after the input voltage has dropped below the threshold value SW1 at least for a predetermined period of time.
- any other oscillator that can be adjusted in frequency and phase of a voltage can be used to provide the comparison signals for the phase comparison.
- Such oscillators are known as phase locked loops oscillators.
- phase comparison phase position by a flywheel oscillator or a similarly acting structure for the comparison process is only permissible for a certain period of time, because otherwise there is a risk that the phase position of the comparison signal will migrate so far that the signal that it is supposed to present despite possible in-phase nature of the received voltages to be compared, the phase comparison device detects that they are in opposite phases.
- the inactivation of the memory SP1 or of its output signal after a maximum permissible time for passing a line conductor crossing point can be initiated, for example, by a timer which is activated by the discriminator D1 when the memory is set.
- Two receiving antennas arranged side by side and coupled to the forward and return conductors of the line conductor need not necessarily be used to record line conductor information and to detect line conductor crossing points. Rather, it is also possible to work with only a single antenna, although the evaluation of the content of the transmitted data can then become more problematic because of the lower reception level. In this case, the adder can be omitted.
- rail-bound vehicles such as railways, trams, underground and S-Bahn trains
- suspended vehicles and vehicles guided by means of inductive conductors are also possible as track-guided vehicles.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19627343 | 1996-07-01 | ||
| DE19627343A DE19627343A1 (de) | 1996-07-01 | 1996-07-01 | Einrichtung zur Eigenortung eines spurgeführten Fahrzeugs |
| PCT/DE1997/001411 WO1998000328A2 (de) | 1996-07-01 | 1997-07-01 | Einrichtung zur eigenortung eines spurgeführten fahrzeugs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0917515A2 true EP0917515A2 (de) | 1999-05-26 |
| EP0917515B1 EP0917515B1 (de) | 2001-10-10 |
Family
ID=7799157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97933620A Expired - Lifetime EP0917515B1 (de) | 1996-07-01 | 1997-07-01 | Einrichtung zur eigenortung eines spurgeführten fahrzeugs |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6168119B1 (de) |
| EP (1) | EP0917515B1 (de) |
| CN (1) | CN1136114C (de) |
| AT (1) | ATE206676T1 (de) |
| DE (2) | DE19627343A1 (de) |
| WO (1) | WO1998000328A2 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19822114C1 (de) | 1998-05-08 | 1999-12-30 | Siemens Ag | Anordnung zum Übertragen eines Sendesignals von einem Sender zu einem Schienenfahrzeug zur Ortung und Informationsübermittlung |
| US6439513B1 (en) | 2001-09-18 | 2002-08-27 | Union Switch & Signal, Inc. | Passive detection system for levitated vehicle or levitated vehicle system |
| CN100567061C (zh) * | 2008-06-20 | 2009-12-09 | 北京交通大学 | 温度不敏感的光纤光栅应力传感列车定位和实时追踪系统 |
| CN102069824B (zh) * | 2010-12-30 | 2013-03-13 | 北京交通大学 | 轨道交通车辆的定位装置和方法 |
| US8576114B2 (en) * | 2011-06-24 | 2013-11-05 | Thales Canada Inc. | Location of a transponder center point |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1176698B (de) | 1962-03-30 | 1964-08-27 | Siemens Ag | Zugsicherungssystem mit linienfoermiger Signal-uebertragung zwischen Zug und Strecke |
| CA853332A (en) | 1968-02-21 | 1970-10-06 | Jauquet Christian | Device for transmitting information between a fixed location and a railway vehicle |
| JPS5315247B2 (de) * | 1973-02-07 | 1978-05-23 | ||
| US3906436A (en) * | 1973-02-08 | 1975-09-16 | Sumitomo Electric Industries | Detection system for the location of moving objects |
| US3958783A (en) * | 1973-06-15 | 1976-05-15 | Westinghouse Electric Corporation | Vehicle zero speed detection system |
| US3974992A (en) * | 1975-03-13 | 1976-08-17 | Westinghouse Electric Corporation | Vehicle velocity limit control method and apparatus |
| DE3205314C2 (de) * | 1982-02-15 | 1984-05-17 | Siemens AG, 1000 Berlin und 8000 München | Einrichtung zur Eigenortung eines spurgeführten Objektes |
| DE3277529D1 (en) * | 1982-07-16 | 1987-12-03 | Sumitomo Electric Industries | Systems for locating mobile objects by using inductive radio frequency lines |
| US4491967A (en) * | 1982-07-16 | 1985-01-01 | Sumitomo Electric Industries, Ltd. | Systems for locating mobile objects by inductive radio |
| FR2562018B1 (fr) * | 1984-03-28 | 1989-01-27 | Interelec | Installation de controle automatique de la marche de trains et de leurs conditions de securite |
| US5364047A (en) * | 1993-04-02 | 1994-11-15 | General Railway Signal Corporation | Automatic vehicle control and location system |
| FR2712863B1 (fr) * | 1993-11-23 | 1996-01-05 | Gec Alsthom Transport Sa | Balise d'initialisation d'un véhicule à l'arrêt. |
-
1996
- 1996-07-01 DE DE19627343A patent/DE19627343A1/de not_active Withdrawn
-
1997
- 1997-07-01 CN CNB971973539A patent/CN1136114C/zh not_active Expired - Fee Related
- 1997-07-01 EP EP97933620A patent/EP0917515B1/de not_active Expired - Lifetime
- 1997-07-01 WO PCT/DE1997/001411 patent/WO1998000328A2/de not_active Ceased
- 1997-07-01 AT AT97933620T patent/ATE206676T1/de not_active IP Right Cessation
- 1997-07-01 US US09/214,197 patent/US6168119B1/en not_active Expired - Fee Related
- 1997-07-01 DE DE59704885T patent/DE59704885D1/de not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9800328A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1998000328A2 (de) | 1998-01-08 |
| EP0917515B1 (de) | 2001-10-10 |
| DE19627343A1 (de) | 1998-01-08 |
| WO1998000328A3 (de) | 1998-03-12 |
| ATE206676T1 (de) | 2001-10-15 |
| CN1228060A (zh) | 1999-09-08 |
| DE59704885D1 (de) | 2001-11-15 |
| US6168119B1 (en) | 2001-01-02 |
| CN1136114C (zh) | 2004-01-28 |
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