EP0917515B1 - Device for self-location of a track-guided vehicle - Google Patents
Device for self-location of a track-guided vehicle Download PDFInfo
- Publication number
- EP0917515B1 EP0917515B1 EP97933620A EP97933620A EP0917515B1 EP 0917515 B1 EP0917515 B1 EP 0917515B1 EP 97933620 A EP97933620 A EP 97933620A EP 97933620 A EP97933620 A EP 97933620A EP 0917515 B1 EP0917515 B1 EP 0917515B1
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- Prior art keywords
- voltage
- receiving
- line conductor
- phase
- oscillator
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- 239000004020 conductor Substances 0.000 claims abstract description 36
- 238000011143 downstream manufacturing Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000000717 retained effect Effects 0.000 abstract 3
- 230000000052 comparative effect Effects 0.000 abstract 2
- 230000001052 transient effect Effects 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 9
- 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
- 230000003137 locomotive effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
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Classifications
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- 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 locomotive is inductively connected to one in the track with coupling coils Line conductor coupled via which it is from a distant Control center with data relevant for vehicle control is supplied.
- the coupling coils are in one another Angle of 90 ° and to the line loop under one Angle of 45 ° arranged. Because of this coil arrangement it is possible, also frequency-modulated when passing through intersections Receive messages from a central office or to send there. Furthermore, this coil arrangement easily determine when exactly the vehicle with its antennas a line crossing point passes Has.
- the object of the invention is the device according to the preamble of claim 1 so that also for vehicles with single antennas or side by side, coupled to the forward and return conductor of a line conductor Receiving antennas a clear detection of line crossing points by evaluating the phase position of the Receiving voltage is possible. With such a facility caused level drops caused by line crossing points clearly differentiate from level drops that due to transmission interference, loose contacts and the like are conditional.
- the invention solves this problem by the characterizing Features of claim 1. Characterized in that the vehicle device at the time of a level reduction, the existing one Phase position for a certain period of time, it is possible when the received voltage rises again the current one Phase position of the received voltage with the held Compare phase comparison, so as to make a decision about whether the level reduction by the Passing a line crossing point was conditional or by a disturbance.
- the drawing shows a schematic section in FIG Representation one between those not shown Rails of a track laid line conductor L, which in A signal current flows through the direction of the arrow.
- This Signal current builds up magnetic fields around the line conductor of crossed receiving antennas A1, A2 of one traveling on the track Vehicle.
- the vehicle should be able to detect when the vehicle is being driven over, the geometric arrangement of the forward and return conductors changes of the line conductor in the track.
- the receiving voltage UA1 of one of the vehicle-side receiving antennas over the distance S can be seen, the reception voltage drops when the vehicle antenna approaches the intersection to then rise again to the same value.
- phase position of the received voltage changes thereby by 180 ° because the ones arranged below the antenna Line conductor pieces in the adjacent sections flowed through by the signal current in different directions become. Because of the different orientation of the two Receiving antennas on the line conductor receive these at Passing a line crossing point temporarily opposite phase signals. These out of phase signals lead to the fact that receivers E1, E2 antiphase received voltages are available. This Receiving voltages for crossing point detection are in a phase comparison device ⁇ evaluated. A discriminator D evaluates the amplitudes of the two at the same time Receive voltages.
- a discriminator D1 causes the activation a phase comparison device ⁇ 1, the phase position the current received voltage UA2 with the held Phase position of the previously determined reference voltage is compared. If the two voltages are in phase opposition, this is the case the evidence that the voltage drop occurred caused by passing a line crossing point has been.
- the two threshold values at which the comparison phase is held or the comparison process can be carried out be the same size; the threshold is advantageously SW2, however, above the threshold SW1; with that ensures that the comparison process is actually only takes place when the reception voltage has risen again is.
- the Discriminator D1 both falling below the predetermined first threshold value SW1 and exceeding the predetermined second threshold value SW2. With falling short of the predetermined lower threshold value SW1 causes the Discriminator D1 the recording of those measured at the receiver E4 Phase position in a memory SP1 and with the detection of upper threshold value SW2 the comparison of that in the memory SP1 stored phase value with the phase position of the receiver E3 tapped receive voltage in a phase evaluation device ⁇ 1. This causes the current received voltage and the stored reference voltage provided that the current receive voltage exceeds the predetermined upper threshold value SW2, the output of an intersection mark K * and them simultaneously causes the SP1 to be reset stored phase value. The facility is now ready on the next drop in the received voltages in the same Way to react as described above.
- the memory SP1 has the phase position of the one it detects Reference voltage for a certain minimum period of time Supply phase comparison device ⁇ 1 in a suitable form. However, since there is no reference phase, this does not happen by a numerical quantity, but by the fact that in memory or signals are generated in front of it, from which the phase relationship for the later phase comparison of the signals to be compared is recognizable.
- the memory SP1 z. B. by a flywheel oscillator shown, when entering the vehicle in the line conductor area (rise of 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 receiving voltage on the current phase position of the line conductor current synchronized becomes.
- This continuously synchronized flywheel oscillator continues to drop below the Threshold value SW1 at least for a predetermined period of time signals are available at its output that are representative for the phase position of the previously determined received voltage.
- Such oscillators are called phase-locked-loops oscillators known.
- the specification of the comparison phase position by a flywheel oscillator or a similar structure for the comparison process is only allowed for a certain period of time, because otherwise there is a risk that the phase position of the comparison signal versus the signal that it's presenting should, so far emigrates that despite possible in-phase the received voltages to be compared from the phase comparison device on phase opposition is recognized.
- the Disabling the memory SP1 or its output signal after a maximum permitted time for passing a line crossing point for example be caused by a timer that when setting the Memory is activated from discriminator D1.
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- 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
Die Erfindung bezieht sich auf eine Einrichtung nach dem
Oberbegriff des Patentanspruches 1. Eine solche Einrichtung
ist beispielsweise aus der DE-PS 11 76 698 bekannt. Dort wird
im Zusammenhang mit einem Zugsicherungssystem mit linienförmiger
Signalübertragung zwischen Zug und Strecke über die
Eigenortung eines Triebfahrzeuges berichtet. Dieses Triebfahrzeug
ist mit Koppelspulen induktiv an einen im Gleis verlegten
Linienleiter angekoppelt, über den es von einer fernen
Steuerstelle mit für die Fahrzeugsteuerung relevanten Daten
versorgt wird. Die Koppelspulen sind zueinander in einen
Winkel von 90° und zu der Linienleiterschleife unter einem
Winkel von 45° angeordnet. Durch diese Spulenanordnung ist es
möglich, auch beim Passieren von Kreuzungsstellen frequenzmodulierte
Nachrichten von einer Zentrale zu empfangen bzw.
dorthin zu senden. Ferner läßt sich durch diese Spulenanordnung
auf einfache Weise feststellen, wann genau das Fahrzeug
mit seinen Antennen eine Linienleiterkreuzungsstelle passiert
hat. Beim Ausfahren aus dem einen Linienleiterabschnitt und
Einfahren in den folgenden Linienleiterabschnitt ändert sich
nämlich die Phasenlage der Empfangsspannungen der beiden Koppelspulen
um 180°, wobei dieser Phasensprung ortsabhängig für
beide Antennen verschieden ist. Während die in Fahrrichtung
orientierte Antenne bereits mit dem Linienleiter des folgenden
Abschnittes koppelt und von dort her Signale mit gegenüber
den zuvor empfangenen Signalen um 180° gedrehter Phase
empfängt, weist die am Ausgang der entgegen der Fahrrichtung
orientierten Antenne abgreifbar Empfangsspannung noch die
ursprüngliche Phasenlage auf. Die beiden Phasenlagen können
so miteinander verglichen werden; aus dem vorübergehend
gleichzeitigen Vorhandensein gegenphasiger Empfangsspannungen
wird auf das Passieren einer Kreuzungsstelle geschlossen. Für
das Erkennen einer Linienleiterkreuzungsstelle wird aber
nicht nur die Phasenlage der beiden Empfangsspannungen bewertet,
sondern auch ihre Amplitude, d. h. die Amplituden beider
Empfangsspannungen müssen einen gewissen Mindestpegel aufweisen,
damit eine Kreuzungsstelle erkannt werden kann. Das
Nichtvorhandensein eines solchen Mindestpegels kennzeichnet
vorübergehende Übertragungsstörungen, die nicht als Kreuzungsstellenbefahrung
gewertet werden.The invention relates to a device according to the
Preamble of
Neben den Übertragungssystemen, die auf dem Fahrzeug gekreuzte oder versetzt angeordnete Empfangsantennen aufweisen, gibt es auch solche, die nur eine einzige Antenne (DE-AS 19 08 400) oder aber jeweils zwei nebeneinanderliegend an den Hin- und Rückleiter eines Linienleiters angekoppelte Empfangsantennen aufweisen. Mit Hilfe dieser Empfangsantennen ist eine Kreuzungsstellenerkennung durch Phasendiskriminierung bislang nicht möglich. Zwar wechselt auch hier die Phasenlage der Empfangsspannungen beim Passieren einer Linienleiterkreuzungsstelle; die Empfangsspannungen schwingen aber jeweils gleichzeitig um. Für das Bewerten dieses Phasensprunges steht damit keine Vergleichsphase zur Verfügung, so daß bei derartigen Antennenanordnungen bislang nur die Pegelabsenkung zur Kreuzungsstellenerkennung herangezogen werden konnte. In addition to the transmission systems that are on the vehicle have crossed or offset receiving antennas, there are also those that only have a single antenna (DE-AS 19 08 400) or two next to each other coupled to the forward and return conductor of a line conductor Have receiving antennas. With the help of these receiving antennas is an intersection detection by phase discrimination so far not possible. The changes here too Phase position of the received voltages when passing one Line crossing point; the received voltages oscillate but at the same time around. For evaluating this phase jump there is no comparison phase available, so that so far only such antenna arrangements Lowering the level used for the detection of intersections could be.
Aufgabe der Erfindung ist es, die Einrichtung nach dem Oberbegriff
des Patentanspruches 1 so weiterzubilden, daß auch
bei Fahrzeugen mit Einzelantennen oder nebeneinanderliegenden,
an den Hin- und Rückleiter eines Linienleiters angekoppelten
Empfangsantennen eine eindeutige Erkennung von Linienleiterkreuzungsstellen
durch Bewertung der Phasenlage der
Empfangsspannung möglich ist. Mit einer solchen Einrichtung
ließen sich durch Linienleiterkreuzungsstellen bedingte Pegeleinbrüche
eindeutig von Pegeleinbrüchen unterscheiden, die
durch Übertragungsstörungen, Wackelkontakte und ähnliches
bedingt sind.The object of the invention is the device according to the preamble
of
Die Erfindung löst diese Aufgabe durch die kennzeichnenden
Merkmale des Patentanspruches 1. Dadurch, daß das Fahrzeuggerät
zum Zeitpunkt einer Pegelabsenkung die dann vorhandene
Phasenlage für eine gewisse Zeitspanne festhält, ist es möglich,
beim Wiederanstieg der Empfangsspannung die dann aktuelle
Phasenlage der Empfangsspannung mit der festgehaltenen
Vergleichsphasenlage zu vergleichen, um so zu einer Entscheidung
darüber zu gelangen, ob die Pegelabsenkung durch das
Passieren einer Linienleiterkreuzungsstelle bedingt war oder
durch eine Störung.The invention solves this problem by the characterizing
Features of
Die Erfindung ist nachstehend anhand der Zeichnung näher erläutert. Die Zeichnung zeigt in
Figur 1- das Prinzip der Linienleiterkreuzungsstellenerfassung nach dem Stand der Technik und in
- Figur 2
- das Prinzip der Kreuzungsstellenerfassung nach der vorliegenden Erfindung.
- Figure 1
- the principle of line intersection detection according to the prior art and in
- Figure 2
- the principle of intersection detection according to the present invention.
Die Zeichnung zeigt in Figur 1 in ausschittsweiser schematischer Darstellung einen zwischen den nicht dargestellten Schienen eines Gleises verlegten Linienleiter L, der in Pfeilrichtung von einem Signalstrom durchflossen ist. Dieser Signalstrom baut um den Linienleiter Magnetfelder auf, die von gekreuzten Empfangsantennen A1, A2 eines das Gleis befahrenden Fahrzeugs aufgenommen werden. An einer Kreuzungsstelle K, deren Überfahren vom Fahrzeug zu detektieren sein soll, ändert sich die geometrische Anordnung der Hin- und Rückleiter des Linienleiters im Gleis markant. Wie aus der Darstellung der Empfangsspannung UA1 einer der fahrzeugseitigen Empfangsantennen über der Strecke S zu sehen ist, sinkt die Empfangsspannung bei Annäherung der Fahrzeugantenne an die Kreuzungsstelle ab, um danach wieder auf den gleichen Wert anzusteigen. Die Phasenlage der Empfangsspannung ändert sich dabei um 180°, weil die unterhalb der Antenne angeordneten Linienleiterstücke in den aneinandergrenzenden Abschnitten vom Signalstrom in unterschiedlicher Richtung durchflossen werden. Wegen der unterschiedlichen Ausrichtung der beiden Empfangsantennen an den Linienleiter empfangen diese beim Passieren einer Linienleiterkreuzungsstelle vorübergehend gegenphasige Signale. Diese gegenphasigen Signale führen dazu, daß an den Ausgängen nachgeschalteter Empfänger E1, E2 gegenphasige Empfangsspannungen zur Verfügung stehen. Diese Empfangsspannungen zur Kreuzungsstellenerkennung werden in einer Phasenvergleichseinrichtung ϕ bewertet. Ein Diskriminator D bewertet zur gleichen Zeit die Amplituden der beiden Empfangsspannungen. Liegen die Empfangsspannungen oberhalb eines vorgegebenen unteren Schwellwertes SW und erkennt die Phasenvergleichseinrichtung ϕ zu diesem Zeitpunkt das Vorliegen gegenphasiger Empfangsspannungen, so veranlaßt sie die Ausgabe eines Kennzeichens K* für das Erkennen einer soeben von den Fahrzeugantennen passierten Linienleiterkreuzungsstelle K.The drawing shows a schematic section in FIG Representation one between those not shown Rails of a track laid line conductor L, which in A signal current flows through the direction of the arrow. This Signal current builds up magnetic fields around the line conductor of crossed receiving antennas A1, A2 of one traveling on the track Vehicle. At an intersection K, the vehicle should be able to detect when the vehicle is being driven over, the geometric arrangement of the forward and return conductors changes of the line conductor in the track. As from the illustration the receiving voltage UA1 of one of the vehicle-side receiving antennas over the distance S can be seen, the reception voltage drops when the vehicle antenna approaches the intersection to then rise again to the same value. The phase position of the received voltage changes thereby by 180 ° because the ones arranged below the antenna Line conductor pieces in the adjacent sections flowed through by the signal current in different directions become. Because of the different orientation of the two Receiving antennas on the line conductor receive these at Passing a line crossing point temporarily opposite phase signals. These out of phase signals lead to the fact that receivers E1, E2 antiphase received voltages are available. This Receiving voltages for crossing point detection are in a phase comparison device ϕ evaluated. A discriminator D evaluates the amplitudes of the two at the same time Receive voltages. Are the receiving voltages above a predetermined lower threshold value SW and recognizes the Phase comparison device ϕ the presence at this time counter-phase received voltages, it causes the Output of a code K * for the recognition of a just line crossing point passed by the vehicle antennas K.
In Figur 2 ist angenommen, daß das Fahrzeuggerät zwei nebeneinanderliegend angeordnete und an den Hin- und Rückleiter der Linienleiterschleife L angekoppelte Empfangsantennen A3 und A4 aufweist. Die von diesen aufgenommenen Empfangsspannungen werden in einem Addierer A in bekannter Weise phasenrichtig addiert und auf einen Empfänger E3 geschaltet. Die Empfangsspannung UA2 der Empfangsantenne sinkt beim Passieren einer Kreuzungsstelle ab und steigt anschließend wieder an. Um beim Wiederanstieg der Empfangsspannung eine Aussage darüber treffen zu können, ob es sich bei der detektierten Amplitudenabsenkung um eine Übertragungsstörung oder etwas ähnliches oder tatsächlich um die Amplitudenabsenkung aufgrund einer Kreuzungsstellenpassage handelte, hält das Fahrzeuggerät die Phasenlage der Empfangsspannung UA2 auf geeignete Weise fest oder bildet sie nach, wenn diese einen vorgegebenen unteren Schwellwert SW1 unterschreitet. Übersteigt die Amplitude der Empfangsspannung später einen zweiten Schwellwert SW2, so veranlaßt ein Diskriminator D1 die Aktivierung einer Phasenvergleichseinrichtung ϕ1, die die Phasenlage der aktuellen Empfangsspannung UA2 mit der festgehaltenen Phasenlage der früher ermittelten Vergleichsspannung vergleicht. Sind die beiden Spannungen gegenphasig, so ist dies der Beleg dafür, daß die eingetretene Spannungsabsenkung durch das Passieren einer Linienleiterkreuzungsstelle hervorgerufen wurde. In Figure 2 it is assumed that the vehicle device two lying side by side arranged and to the forward and return conductor of the line conductor loop L coupled receiving antennas A3 and A4. The received voltages received by them are in phase in an adder A in a known manner added and switched to a receiver E3. The Receiving voltage UA2 of the receiving antenna drops as it passes a crossing point and then rises again. To make a statement about this when the reception voltage rises again to be able to meet whether it is detected Decrease in amplitude by a transmission disturbance or something similar or actually due to the decrease in amplitude an intersection passage acted, the vehicle device stops the phase position of the received voltage UA2 to suitable Form or replicate them if they have a predetermined one falls below the lower threshold value SW1. Exceeds the amplitude of the receive voltage later a second Threshold value SW2, a discriminator D1 causes the activation a phase comparison device ϕ1, the phase position the current received voltage UA2 with the held Phase position of the previously determined reference voltage is compared. If the two voltages are in phase opposition, this is the case the evidence that the voltage drop occurred caused by passing a line crossing point has been.
Die beiden Schwellwerte, bei denen die Vergleichsphase festgehalten bzw. der Vergleichsvorgang durchgeführt werden, können gleichgroß sein; in vorteilhafter Weise liegt der Schwellwert SW2 jedoch oberhalb des Schwellwertes SW1; damit wird sichergestellt, daß der Vergleichsvorgang auch tatsächlich erst dann stattfindet, wenn die Empfangsspannung wieder angestiegen ist.The two threshold values at which the comparison phase is held or the comparison process can be carried out be the same size; the threshold is advantageously SW2, however, above the threshold SW1; with that ensures that the comparison process is actually only takes place when the reception voltage has risen again is.
In dem dargestellten Ausführungsbeispiel detektiert der Diskriminator D1 sowohl das Unterschreiten des vorgegebenen ersten Schwellwertes SW1 als auch das Überschreiten des vorgegebenen zweiten Schwellwertes SW2. Mit dem Unterschreiten des vorgegebenen unteren Schwellwertes SW1 veranlaßt der Diskriminator D1 das Festhalten der am Empfänger E4 gemessenen Phasenlage in einem Speicher SP1 und mit dem Erkennen des oberen Schwellwertes SW2 den Vergleich des im Speicher SP1 gespeicherten Phasenwertes mit der Phasenlage der am Empfänger E3 abgreifbaren Empfangsspannung in einer Phasenbewertungseinrichtung ϕ1. Diese veranlaßt bei Gegenphasigkeit der aktuellen Empfangsspannung und der gespeicherten Vergleichsspannung unter der Voraussetzung, daß die aktuelle Empfangsspannung den vorgegebenen oberen Schwellwert SW2 übersteigt, die Ausgabe eines Kreuzungsstellenkennzeichens K* und sie veranlaßt gleichzeitig das Zurückstellen des im Speicher SP1 gespeicherten Phasenwertes. Damit ist die Einrichtung bereit, auf das nächste Absinken der Empfangsspannungen in gleicher Weise zu reagieren wie vorstehend näher geschildert. In the illustrated embodiment, the Discriminator D1 both falling below the predetermined first threshold value SW1 and exceeding the predetermined second threshold value SW2. With falling short of the predetermined lower threshold value SW1 causes the Discriminator D1 the recording of those measured at the receiver E4 Phase position in a memory SP1 and with the detection of upper threshold value SW2 the comparison of that in the memory SP1 stored phase value with the phase position of the receiver E3 tapped receive voltage in a phase evaluation device ϕ1. This causes the current received voltage and the stored reference voltage provided that the current receive voltage exceeds the predetermined upper threshold value SW2, the output of an intersection mark K * and them simultaneously causes the SP1 to be reset stored phase value. The facility is now ready on the next drop in the received voltages in the same Way to react as described above.
Der Speicher SP1 hat die Phasenlage der von ihm detektierten Vergleichsspannung für eine bestimmte Mindestzeitspanne der Phasenvergleichseinrichtung ϕ1 in geeigneter Form zuzuführen. Da es jedoch keine Bezugsphase gibt, geschieht dies nicht durch eine numerische Größe, sondern dadurch, daß im Speicher oder einem ihm vorgeordneten Gebilde Signale erzeugt werden, aus denen für den späteren Phasenvergleich die Phasenbeziehung der zu vergleichenden Signale erkennbar ist. Aus diesem Grunde wird der Speicher SP1 z. B. durch einen Schwungradoszillator dargestellt, der beim Einfahren des Fahrzeugs in den Linienleiterbereich (Ansteigen der Empfangsspannung über einen gegebenen Mindestpegel) auf die Frequenz und durch zeitliche Bewertung der Amplitudenmaxima und -minimum in Verbindung mit den Nulldurchgängen der Empfangsspannung auf die aktuelle Phasenlage des Linienleiterstromes synchronisiert wird. Dieser laufend synchronisierte Schwungradoszillator stellt auch nach dem Absinken der Eingangsspannung unter den Schwellwert SW1 mindestens für eine vorgegebene Zeitspanne an seinem Ausgang Signale zur Verfügung, die repräsentativ sind für die Phasenlage der zuvor ermittelten Empfangsspannung. Durch zeitlichen Vergleich der Bewertung der Spitzenwerte und der Nulldurchgänge der aktuellen Empfangsspannung mit der vom Schwungradoszillator fortgeschriebenen Vergleichsspannung läßt sich erkennen, ob die beiden zu vergleichenden Spannungen gegenphasig sind oder nicht.The memory SP1 has the phase position of the one it detects Reference voltage for a certain minimum period of time Supply phase comparison device ϕ1 in a suitable form. However, since there is no reference phase, this does not happen by a numerical quantity, but by the fact that in memory or signals are generated in front of it, from which the phase relationship for the later phase comparison of the signals to be compared is recognizable. For this Basically, the memory SP1 z. B. by a flywheel oscillator shown, when entering the vehicle in the line conductor area (rise of 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 receiving voltage on the current phase position of the line conductor current synchronized becomes. This continuously synchronized flywheel oscillator continues to drop below the Threshold value SW1 at least for a predetermined period of time signals are available at its output that are representative for the phase position of the previously determined received voltage. By comparing the evaluation of the peak values and the zero crossings of the current reception voltage with that of Flywheel oscillator updated reference voltage can be seen whether the two voltages to be compared are in phase opposition or not.
Anstelle eines Schwungradoszillators kann auch jeder beliebige andere Oszillator, der sich in Frequenz und Phasenlage einer Spannung anpassen läßt, zur Bereitstellung der Vergleichssignale für den Phasenvergleich herangezogen werden. Instead of a flywheel oscillator, anyone can other oscillator that is in frequency and phase a voltage can be adjusted to provide the comparison signals be used for the phase comparison.
Solche Oszillatoren sind als Phase-locked-loops-Oszillatoren bekannt.Such oscillators are called phase-locked-loops oscillators known.
Die Vorgabe der Vergleichsphasenlage durch einen Schwungradoszillator oder ein ähnlich wirkendes Gebilde für den Vergleichsvorgang ist nur für eine gewisse Zeitspanne zulässig, weil sonst die Gefahr besteht, daß die Phasenlage des Vergleichssignals gegenüber dem Signal, das es präsentieren soll, so weit auswandert, daß trotz möglicher Gleichphasigkeit der zu vergleichenden Empfangsspannungen von der Phasenvergleichseinrichtung auf Gegenphasigkeit erkannt wird. Das Unwirksamschalten des Speichers SP1 bzw. von dessen Ausgangssignal nach Ablauf einer maximal zulässigen Zeit für das Passieren einer Linienleiterkreuzungsstelle kann beispielsweise durch ein Zeitglied veranlaßt werden, das beim Einstellen des Speichers vom Diskriminator D1 aus aktiviert wird.The specification of the comparison phase position by a flywheel oscillator or a similar structure for the comparison process is only allowed for a certain period of time, because otherwise there is a risk that the phase position of the comparison signal versus the signal that it's presenting should, so far emigrates that despite possible in-phase the received voltages to be compared from the phase comparison device on phase opposition is recognized. The Disabling the memory SP1 or its output signal after a maximum permitted time for passing a line crossing point, for example be caused by a timer that when setting the Memory is activated from discriminator D1.
Für das Aufnehmen von Linienleiterinformationen und das Detektieren von Linienleiterkreuzungsstellen müssen nicht unbedingt zwei nebeneinander angeordnete und an die Hin- und Rückleiter des Linienleiters angekoppelte Empfangsantennen verwendet sein. Vielmehr ist es auch möglich, mit nur einen einzigen Antennen zu arbeiten, wobei dann allerdings die inhaltliche Bewertung der übermittelten Daten wegen des niedrigeren Empfangspegels problematischer werden kann. In diesem Falle kann auf den Addierer verzichtet werden. Als spurgeführte Fahrzeuge kommen neben schienengebundenen Fahrzeugen wie Eisenbahnen, Straßenbahnen, U- und S-Bahnen auch Schwebefahrzeuge und mittels induktiver Leiter spurgeführte Fahrzeuge in Frage.For recording line conductor information and that Detection of line crossing points is not essential two side by side and to the back and forth Return line of the line conductor coupled receiving antennas be used. Rather, it is also possible with just one single antennas to work, but then the content Evaluation of the transmitted data due to the lower Reception level can become more problematic. In this The adder can be dispensed with. As a guided tour Vehicles come alongside rail-bound vehicles such as trains, trams, subways and suburban trains, as well as hover vehicles and vehicles guided by means of inductive conductors in question.
Claims (8)
- Device for self-orientation of a track-guided vehicle, which is provided with a vehicle apparatus (A, E3, D1, SP1, ϕ1), on sections which are subdivided into segments by crossed, externally-supplied line conductor loops (L) which carry a line conductor current with predetermined frequency, using at least one receiving aerial (A3, A4), which is coupled inductively to the forward conductor and/or return conductor of the line conductor loop and the receiving voltage (UA2) of which can be evaluated at least indirectly with respect to amplitude and phase position for recognising line conductor intersections (K) which have been travelled over,
characterisedin that the vehicle apparatus (A, E3, D1, SP1, ϕ1) has at least one oscillator (SP1), which can be tuned to the frequency of the line conductor current or to a multiple thereof, which, upon entry into the line conductor loop, it synchronises with the receiving voltage (UA2), at least with respect to the phase, and causes it continuously to track said voltage,in that when the receiving voltage (UA2) falls below a given first level (SW1), the vehicle apparatus (A, E3, D1, SP1, ϕ1) holds the phase position of the receiving voltage (UA2) that is established at this point and is represented by the oscillator output voltage and, at a later instant, when the receiving voltage (UA3) exceeds a predetermined second level (SW2), compares the held phase position with the phase position of the receiving voltage (UA2) that is current at that time for recognising a line conductor intersection (K) which has been travelled over, wherein in the case of phase opposition being recognised, a downstream processing device (ϕ1) of the vehicle apparatus triggers a signal (K*) as intersection signal. - Device according to claim 1, characterised in that the second level (SW2) lies above the first level (SW1) by a predetermined amount or fraction.
- Device according to claim 1 or 2, characterised in that a time dimensioning, which can be reset according to need upon recognition of an intersection (K), is provided for holding the phase position of the reference voltage over a maximum time permissible for passing through the intersection.
- Device according to one of claims 1 to 3, characterised in that the vehicle apparatus determines the phase position of the reference voltage to be made available by the oscillator by evaluating the peak values and the zero passages of the receiving voltage (UA2) with respect to time and determines the reference voltage.
- Device according to claim 1, characterised in that the vehicle apparatus has one or more aerial arrangements, each having only a single receiving aerial or a plurality of receiving aerials (A3, A4) lying transversely with respect to the track and coupled in each case to the forward conductor and return conductor of the line conductor.
- Device according to claim 1, characterised in that already before the receiving level of the receiving voltage falls below the first level (SW1), the vehicle apparatus adjusts the oscillator to a fundamental frequency which is determined by the frequency of the line conductor current, and in order to do this, determines the frequency of the line conductor current if and for as long as the receiving level of the receiving voltage exceeds a predetermined minimum value (SW1, SW2).
- Device according to claim 1, characterised in that the oscillator is constructed as a flywheel wheel oscillator.
- Device according to claim 1, characterised in that the oscillator is constructed as a phase-locked-loop oscillator.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19627343 | 1996-07-01 | ||
| DE19627343A DE19627343A1 (en) | 1996-07-01 | 1996-07-01 | Device for self-locating a track-guided vehicle |
| PCT/DE1997/001411 WO1998000328A2 (en) | 1996-07-01 | 1997-07-01 | Device for automatically locating a railway vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0917515A2 EP0917515A2 (en) | 1999-05-26 |
| EP0917515B1 true EP0917515B1 (en) | 2001-10-10 |
Family
ID=7799157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97933620A Expired - Lifetime EP0917515B1 (en) | 1996-07-01 | 1997-07-01 | Device for self-location of a track-guided vehicle |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6168119B1 (en) |
| EP (1) | EP0917515B1 (en) |
| CN (1) | CN1136114C (en) |
| AT (1) | ATE206676T1 (en) |
| DE (2) | DE19627343A1 (en) |
| WO (1) | WO1998000328A2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19822114C1 (en) * | 1998-05-08 | 1999-12-30 | Siemens Ag | Arrangement for transmitting a transmission signal from a transmitter to a rail vehicle for location and information transmission |
| US6439513B1 (en) | 2001-09-18 | 2002-08-27 | Union Switch & Signal, Inc. | Passive detection system for levitated vehicle or levitated vehicle system |
| CN100567061C (en) * | 2008-06-20 | 2009-12-09 | 北京交通大学 | Temperature insensitive optical fiber optical grating stress sensing train location and real time tracing system |
| CN102069824B (en) * | 2010-12-30 | 2013-03-13 | 北京交通大学 | Positioning device and method for rail traffic vehicle |
| 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 (en) | 1962-03-30 | 1964-08-27 | Siemens Ag | Train protection system with linear signal transmission between train and track |
| CA853332A (en) | 1968-02-21 | 1970-10-06 | Jauquet Christian | Device for transmitting information between a fixed location and a railway vehicle |
| JPS5315247B2 (en) * | 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 (en) | 1982-02-15 | 1984-05-17 | Siemens AG, 1000 Berlin und 8000 München | Device for self-location of a track-guided object |
| US4491967A (en) * | 1982-07-16 | 1985-01-01 | Sumitomo Electric Industries, Ltd. | Systems for locating mobile objects by inductive radio |
| EP0098896B1 (en) | 1982-07-16 | 1987-10-28 | Sumitomo Electric Industries Limited | Systems for locating mobile objects by using inductive radio frequency lines |
| FR2562018B1 (en) | 1984-03-28 | 1989-01-27 | Interelec | INSTALLATION FOR AUTOMATIC CONTROL OF THE TRAIN OPERATION AND THEIR SAFETY CONDITIONS |
| US5364047A (en) * | 1993-04-02 | 1994-11-15 | General Railway Signal Corporation | Automatic vehicle control and location system |
| FR2712863B1 (en) | 1993-11-23 | 1996-01-05 | Gec Alsthom Transport Sa | Initialization tag for a stationary vehicle. |
-
1996
- 1996-07-01 DE DE19627343A patent/DE19627343A1/en not_active Withdrawn
-
1997
- 1997-07-01 CN CNB971973539A patent/CN1136114C/en not_active Expired - Fee Related
- 1997-07-01 US US09/214,197 patent/US6168119B1/en not_active Expired - Fee Related
- 1997-07-01 WO PCT/DE1997/001411 patent/WO1998000328A2/en active IP Right Grant
- 1997-07-01 EP EP97933620A patent/EP0917515B1/en not_active Expired - Lifetime
- 1997-07-01 AT AT97933620T patent/ATE206676T1/en not_active IP Right Cessation
- 1997-07-01 DE DE59704885T patent/DE59704885D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1136114C (en) | 2004-01-28 |
| EP0917515A2 (en) | 1999-05-26 |
| WO1998000328A3 (en) | 1998-03-12 |
| ATE206676T1 (en) | 2001-10-15 |
| US6168119B1 (en) | 2001-01-02 |
| DE59704885D1 (en) | 2001-11-15 |
| CN1228060A (en) | 1999-09-08 |
| DE19627343A1 (en) | 1998-01-08 |
| WO1998000328A2 (en) | 1998-01-08 |
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