EP1026062A2 - Procédé d'évaluation de signaux de contact placé sur la voie - Google Patents

Procédé d'évaluation de signaux de contact placé sur la voie Download PDF

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Publication number
EP1026062A2
EP1026062A2 EP00440010A EP00440010A EP1026062A2 EP 1026062 A2 EP1026062 A2 EP 1026062A2 EP 00440010 A EP00440010 A EP 00440010A EP 00440010 A EP00440010 A EP 00440010A EP 1026062 A2 EP1026062 A2 EP 1026062A2
Authority
EP
European Patent Office
Prior art keywords
signals
evaluation device
counting
sent
determined
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
Application number
EP00440010A
Other languages
German (de)
English (en)
Other versions
EP1026062A3 (fr
EP1026062B1 (fr
Inventor
Marc Kipping
Rainer Schüle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcatel CIT SA
Alcatel Lucent SAS
Original Assignee
Alcatel CIT SA
Alcatel SA
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Filing date
Publication date
Application filed by Alcatel CIT SA, Alcatel SA filed Critical Alcatel CIT SA
Publication of EP1026062A2 publication Critical patent/EP1026062A2/fr
Publication of EP1026062A3 publication Critical patent/EP1026062A3/fr
Application granted granted Critical
Publication of EP1026062B1 publication Critical patent/EP1026062B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/16—Devices for counting axles; Devices for counting vehicles
    • B61L1/161—Devices for counting axles; Devices for counting vehicles characterised by the counting methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
    • B61L1/16—Devices for counting axles; Devices for counting vehicles
    • B61L1/168—Specific transmission details

Definitions

  • the invention relates to a method for evaluating rail contact signals in a metering point, a metering point for executing the method, an evaluation device and an axle counter.
  • Axle counting devices are used in rail-bound traffic, especially in Connection with track vacancy detection equipment or with level crossing protection used.
  • An axle counting device has the task of making axle passes Register and count rail contacts.
  • the point of delivery usually comprises two Rail contacts and an electronic junction box.
  • the one from the rail contacts originating amplitude-modulated AC signals (frequency approx. 30 kHz) are converted into standardized square wave signals in the electronic connection box converted. These square wave signals are then transmitted in real time via the Transfer the transmission path to the evaluation device. Only there is the A counter reading is determined in the sequence of the square-wave signals.
  • Analog rectangular signals are transmitted Due to the digital telegram transmission, transmission errors occur much less often, which reduces the number of operational impairments. If a telegram is actually lost on the transmission line or cannot be restored, the indoor system requests a telegram from the metering pump again arrives.
  • a method which solves this problem is the subject of claim 1.
  • the invention not only count signals are sent in real time, but also also meter readings, which are determined independently from the metering point from the metering signals have been. If a counter signal is not sent by the evaluation device due to a fault receive, so the evaluation device or a dispatcher recognize this fault with the help of the additionally sent meter reading and if necessary correct. This additional redundancy leads to a clear one Stabilization of the operation and is still with only little additional construction work reachable.
  • the meter readings determined by the metering point are sent to the evaluation device when no metering signals are sent.
  • the invention can therefore achieve significantly shorter system reaction times. This in turn allows the length of the route sections to be reduced and / or the driving speed on the route to be increased. For level crossings where metering points trigger the securing of the transition, the distance between metering point and transition can be shortened. Especially in the case of slowly approaching rail vehicles, this reduces waiting times for vehicles or people who want to cross the transition.
  • the point of delivery sends the meter readings determined by him to the evaluation device in the form of frequency patterns, which comprise at least two frequencies. This will make one simple, reliable serial that can be realized with standard components on the market Data transfer possible.
  • a metering point for executing the method is the subject of claims 4 and 5, an evaluation device subject of claim 6 and an axle counting device Subject matter of claim 7.
  • Fig. 1 shows a railroad track G , on one rail two rail contacts SK1 and SK2 are attached, their execution (electromagnetic, optical etc.) is not essential in connection with the invention.
  • the rail contacts are connected to an electronic connection box EAK via supply lines, which is preferably in close proximity to the rail contacts.
  • the electronic junction box EAK processes the rail contact signals, which have been obtained and fed from the rail contacts SK1 and SK2.
  • the rail contacts SK1 and SK2 form together with the electronic junction box EAK the point of delivery ZP.
  • the line stands over a transmission line electronic junction box EAK and thus the metering point ZP with an evaluation device AWE in connection.
  • the evaluation device AWE is located for example in a signal box or is assigned to a level crossing.
  • a count signal is defined in this context as a signal from which a receiver can determine that an axis has passed Has.
  • the count signal can be, for example, a short pulse through which a receiver - here the evaluation device AWE - is shown that a Axis passage has taken place.
  • This count signal can also be a frequency sequence be, as explained in more detail in an embodiment to be described later is represented, a combination of lowering states and by the evaluation device still needs to be evaluated. While the rail contact signals are continuously transferred to the electronic junction box EAK Count signals defined in the above sense are only determined when a Axis crossing takes place, the rail contact signals therefore a significant change Experienced.
  • step 22 it is checked whether a count signal is present. If this is the case, it will Count signal sent to the evaluation device in a step 23. In parallel or subsequently in step 24 an updated counter reading is in the point of delivery ZP determined. The procedure for this is basically known and also at the beginning essay cited by G. Poppe. This variant now provides this counter reading not immediately, but only in a step 25 to the Send evaluation device if no count signal is sent. The sending of counting signals therefore has priority, so that the evaluation device always as quickly as possible about any significant change in a rail contact signal is informed.
  • FIG. 3 shows the temporal course of these square-wave signals in the case of an axis crossing over two adjacent rail contacts. It is assumed that the rail contact SK1 is used first. Consequently, the square-wave signal determined from the rail contact signal SK1 is first lowered. The same signal pattern is repeated a little later for the other rail contact SK2. The direction from which the vehicle axis has passed over the two rail contacts SK1 and SK2 can be determined from the chronological sequence of the reductions. In addition, it can be seen in Fig. 3 that there are exactly four different lowering states that can occur when a combination of two rail contacts. The one marked with the framed symbol 0 Lowering state "is characterized in that neither the rail contact SK1 nor the rail contact SK2 is used.
  • both rail contacts register an axis passage at the same time.
  • both rail contacts registers SK1 or SK2 an axis passage.
  • an evaluation device AWE By evaluating the chronological sequence of the lowering states, an evaluation device AWE is able to determine the number of axles and also the direction of a rail vehicle traveling over the rail contacts. Therefore, in a frequency selection device FQAE, a defined frequency f 1 ... f 4 is assigned to each setback state and this is sent to the evaluation device AWE via the transmission link.
  • the frequencies are made available by a frequency generator FQG.
  • the above-mentioned counting signals are consequently nothing more than a group of four electrical signals of different frequencies in this exemplary embodiment, which represent lowering states and whose evaluation can be used to infer the presence of an axis passage.
  • a counting unit ZSE which independently determines the count by counting up or down from the supplied lowering states 0, 1, A and B. This determination basically corresponds to that which is also carried out in known evaluation devices based on real-time transmission and is therefore not explained in more detail.
  • the counter reading determined by the count reading determination unit ZSE is fed to a decision maker ENT, which is additionally connected to the signal evaluation device SIGA. If the determined lowering state is equal to the zero state 0, the decision maker ENT converts the supplied counter reading into logical levels.
  • the counter readings are preferably converted into binary numbers, so that only two logic levels are required.
  • the counter reading 86 would be converted into the binary number 1010110 and the zeros of this binary number would be assigned the level L and the ones the level H.
  • the decision maker ENT forwards this sequence of levels to the frequency selection device FQAE.
  • the levels L and H are assigned a frequency f 5 and f 6 , respectively.
  • the entire transmission thus requires only six different frequencies f 1 ... f 6 , namely four frequencies for the transmission of the lowering states (0, A, B, 1) and two frequencies for the transmission of the counter readings.
  • the sending of the zero state 0 is not initiated by the signal evaluation device SIGA, but by the decision maker ENT. If necessary, the sending of the zero state can also be dispensed with entirely; then only 5 different frequencies are required.
  • the sequence shown is an alternative in many respects leaves.
  • the meter reading can only be carried out then if the decision maker ENT determines that zero states (i.e. no rail contact drive) are present.
  • the change between the two different ones Send modes - send count signals or meter readings - can be program controlled be, it only being necessary to ensure that count signals are preferably transmitted become.
  • step 42 checks whether the lowering state is equal to the zero state. If the lowered state is different from the zero state, the lowering state is sent in step 43. If there is a zero state, then a step 44 checks whether it already exists a sequence of zero states of predetermined length has been determined. If so applies, the counter reading is determined in a step 45 and on in a step 46 the evaluation device AWE sent. This variant avoids that Attempts to send between axis passes are aborted too often because of new ones Count signals are to be sent.
  • counting signals and meter readings are not sent one after the other, but simultaneously from the metering point to the evaluation device. To do this, it is only necessary to ensure that not only one but several of the frequencies f 1 ... f 6 described above can be sent simultaneously. It can be determined, for example, that the current counter reading is continuously transmitted using the frequency patterns formed from the frequencies f 5 and f 6 . As soon as count signals are available, they are also sent using frequencies f 1 ... f 4 . A decision maker is not required in this embodiment.
  • the frequencies used are in a range that includes the use commercially available standard components for the transmitting and receiving devices allowed. This means that frequencies between 300 Hz and 3400 Hz can easily be exceeded transfer conventional telephone lines. But it should be noted that of course any other type of transmission is also possible; for example transmit the counting signals to be transmitted in real time as described a digital telegram transmission is selected for the meter readings becomes.
  • FIG. 5 An evaluation device AWE according to the invention is shown in FIG. 5. She has in addition to an interface via which a communication link to a metering point ZP is producible, a receiving unit EE for receiving in real time transmitted counter signals and for receiving counter readings. Besides, is an evaluation unit ZSA1 known per se is provided, which consists of the received Counter signals counter readings determined. Depending on the transmission method used if necessary, a further evaluation unit ZSA2 is required, which the received ones Meter readings processed. In this further evaluation unit ZSA2, for example a telegram evaluation take place. If, as indicated in Fig.
  • the receiving unit EE outputs logic levels L and H, these can, if necessary, immediately be further processed by the following comparator VGL, so that the Evaluation unit ZSA2 can be omitted.
  • the comparator VGL which is the most immediate received received with the determined counter readings, either takes effect immediately to the higher-level system (e.g. track vacancy detection system or level crossing) or transfers the result of the comparison to an output unit AE.
  • the output unit AE represents the interface to an operator and shows for example the meter reading or error messages.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Testing Or Measuring Of Semiconductors Or The Like (AREA)
EP00440010A 1999-01-16 2000-01-14 Procédé d'évaluation de signaux de contact des rails Expired - Lifetime EP1026062B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19901568A DE19901568A1 (de) 1999-01-16 1999-01-16 Verfahren zur Auswertung von Schienenkontaktsignalen
DE19901568 1999-01-16

Publications (3)

Publication Number Publication Date
EP1026062A2 true EP1026062A2 (fr) 2000-08-09
EP1026062A3 EP1026062A3 (fr) 2002-05-15
EP1026062B1 EP1026062B1 (fr) 2005-05-25

Family

ID=7894485

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00440010A Expired - Lifetime EP1026062B1 (fr) 1999-01-16 2000-01-14 Procédé d'évaluation de signaux de contact des rails

Country Status (4)

Country Link
EP (1) EP1026062B1 (fr)
AT (1) ATE296222T1 (fr)
DE (2) DE19901568A1 (fr)
ES (1) ES2240037T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2319062B1 (es) * 2007-09-19 2010-02-03 Lineas Y Cables, S.A. Pedal ferroviario.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2054748A1 (de) * 1970-11-06 1972-07-06 Sel Verfahren zum Auswerten von fahrtrichtungsabhängigen Achszählimpulsen in Eisenbahnsicherungsanlagen
DE3223327A1 (de) * 1982-06-19 1983-12-22 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Sichere gleisfreimeldeeinrichtung
DE3431171A1 (de) * 1984-08-24 1986-03-06 Standard Elektrik Lorenz Ag, 7000 Stuttgart Gleisfreimeldeeinrichtung mit achszaehlung
US5629509A (en) * 1994-02-17 1997-05-13 Alcatel Sel Aktiengesellschaft Axle counter with variable threshold setting

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2054748A1 (de) * 1970-11-06 1972-07-06 Sel Verfahren zum Auswerten von fahrtrichtungsabhängigen Achszählimpulsen in Eisenbahnsicherungsanlagen
DE3223327A1 (de) * 1982-06-19 1983-12-22 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Sichere gleisfreimeldeeinrichtung
DE3431171A1 (de) * 1984-08-24 1986-03-06 Standard Elektrik Lorenz Ag, 7000 Stuttgart Gleisfreimeldeeinrichtung mit achszaehlung
US5629509A (en) * 1994-02-17 1997-05-13 Alcatel Sel Aktiengesellschaft Axle counter with variable threshold setting

Also Published As

Publication number Publication date
EP1026062A3 (fr) 2002-05-15
DE50010367D1 (de) 2005-06-30
DE19901568A1 (de) 2000-07-27
ATE296222T1 (de) 2005-06-15
ES2240037T3 (es) 2005-10-16
EP1026062B1 (fr) 2005-05-25

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