EP0443438A2 - Procédé et dispositif pour alerter les personnes dans la zone de voie ferrée sur un canal de communication à haute fréquence - Google Patents

Procédé et dispositif pour alerter les personnes dans la zone de voie ferrée sur un canal de communication à haute fréquence Download PDF

Info

Publication number: EP0443438A2
Authority: EP; European Patent Office
Prior art keywords: stations; station; warning; information; processor
Prior art date: 1990-02-21
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

EP91102081A

Other languages

German (de)

English (en)

Other versions

EP0443438A3 (en

EP0443438B1 (fr

Inventor

Hermann Stein

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.)

Stein GmbH

Original Assignee

Stein GmbH

Priority date (The priority date 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 date listed.)

1990-02-21

Filing date

1991-02-14

Publication date

1991-08-28

1991-02-14 Application filed by Stein GmbH filed Critical Stein GmbH

1991-08-28 Publication of EP0443438A2 publication Critical patent/EP0443438A2/fr

1992-06-10 Publication of EP0443438A3 publication Critical patent/EP0443438A3/de

1995-01-04 Application granted granted Critical

1995-01-04 Publication of EP0443438B1 publication Critical patent/EP0443438B1/fr

2011-02-14 Anticipated expiration legal-status Critical

Status 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
- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
- B61L23/06—Control, warning or like safety means along the route or between vehicles or trains for warning men working on the route

Definitions

the invention relates to a method and a device for warning people in the track area with the features specified in the preamble of claims 1 and 9, respectively.
the warning transmitter evaluates the transmission impulses of other possible warning transmitters, insofar as the transmission impulses can be evaluated on the basis of their field strength, so that the topographical area of coordination results from the field strength relationships; however, no field strength meter is used and no field strength measurement is carried out.
the warning transmitters and warning receivers contain processors, the warning receivers an HF receiving part with demodulator and antenna, the warning transmitters furthermore an HF transmitting part with modulator; they are not nearly identical.
Asynchronous high-frequency multiplexing methods cannot be used due to the collision resolution, which takes too long, if the transmission times overlap.
time-division multiplexing methods for the transmission of messages via a high-frequency channel are known (DE-AS 2818916 and DE-PS 3603907), which, however, only prevent the plugging of individual stations which send their messages to recipients directly assigned to them. Preventing blockages in the transmission of messages between the stations is not possible with these methods, in particular not in the case of chained, message-transmitting stations and their possibly adjacent warning systems, as is typical for systems for warning people in the track area.
the object of the invention is therefore to provide a method and a device in which it is possible to alert people in the track area in front of approaching trains by train stations set up on the track, which detect trains and signal the status information to a person in the work area to warn capable warning station over a high-frequency message channel in time-division multiplex operation with the same transmission period, preventing clogging of the stations, even if systems of this type are adjacent.
the method and the device according to the invention has the particular advantage that for the first time the operation of several systems for warning people in the track area against approaching trains on one single high-frequency channel is possible. In addition to a frequency economy that cannot be further improved, there is no need to plan the use of different high-frequency channels, and identical construction of warning and signaling stations is possible, which enables economical production as well as economical provision by the operator.
claims 2 and 10 enable the number of time slots per transmission period to be reduced by avoiding the occupancy detection of the own transmission time slots of the stations that have been reported.
claims 3 and 11 serve to meet a safety-related power-up procedure. Defective stations can thus be switched off and new stations switched on during operation in order to increase the availability.
claims 4 and 12 result in an update of the time slots, so that the transmission conditions of the other stations at the previously occupied time slot can also be recorded. This is made possible by the peculiarity of the method of freely selecting a time slot from all time slots recorded and reported as not being occupied.
the features of claims 5 and 13 enable an expedient type of installation with identical construction of all reporting stations and possible savings in occupied time slots when the warning station is connected to its neighbors.
claims 6 and 14 have an essential meaning. While maintaining the identical construction of the stations, they solve range problems in difficult terrain conditions, without endangering the security delimitation of a maximum delay time of the messages.
Claims 7 and 8 and 15 and 16 are also of significant importance.
the features of claims 7 and 15 serve to select the most appropriate reporting stations when they are implemented or previously set up in the direction of travel of the construction site.
the features of claims 8 and 16 are used to automatically select the reporting stations with security monitoring.
F I G. 1 outlines the typical linear arrangement of the stations (1 to 9) on a railway line.
a train approaching from the left is detected by a reporting station 1 (with the aid of a sensor which detects the train and its direction), reported to a warning station 5 in the work area of the people and, when passing through a reporting station 7, is logged off again.
a reporting station 9 announces the train of the warning station 5 and a reporting station 3 reports the train leaving the work area.
the distance from the announcing stations (1, 9) to the warning station (5) required for a timely warning is approximately 3 km, whereas the deregistering stations (3, 7) are set up near the warning station (5).
a reporting station 31 of an adjacent warning system is indicated.
the resulting typical field strength ratios and the stations that are therefore in the mutual sphere of influence are exemplified by the fields 21 to 25 surrounding them.
FI G. 4 shows an example of a station (1 to 9, 31), the circuit structure of which enables the stations to be of the same type.
a processor 55 connected to a clock generator 57 receives and outputs information about a transceiver 51 and its antenna 53.
the communication link to the other stations is a high-frequency channel in time division multiplex operation with the same transmission period of the stations.
the processor 55 is connected to a read-only memory 59 which essentially contains the program and a memory 61. He carries out work steps that can be taken directly from the claims. He can stimulate warning means 63 in a warning station (5) and detect trains and their direction by a sensor 65 in reporting stations (1, 3, 7, 9). An adjustable address 67 the processor is also fed to address the stations (1 to 9, 31).
signaling stations (3, 7) are in the immediate vicinity of the warning station (5), they can exchange their information via lines 69 connecting them instead of via the high-frequency channel to reduce the otherwise required transmission time slots.
the processors 55 can be doubling the circuit blocks 75, 77 (FIG. 4) according to FI G. 5, safety requirements for detecting an error can be met by the processors 55 exchanging acknowledgment signals via a connecting line for coordinating their approximated synchronization. If the synchronization deviations are too great, the processors 55 trigger an alarm.
FI G. 3 shows the transmission and reception relationships in time slots (Z) 1 to 6 of a transmission period at stations 1 to 9 and 31 for the example according to FIG. 1.
S the own transmission time slot
E the other stations
M the indirectly received time slots reported by these stations (M) as occupied
S the own transmission time slot
M the indirectly received time slots reported by these stations (M) as occupied
S the own transmission time slot
M the indirectly received time slots reported by these stations (M) as occupied
station 31 of the neighboring system transmits in time slot 2. It is only received directly by station 1.
stations 1 to 9 now go into operation in this order at intervals of a few periods.
station 1 recognizes time slots 1 and 3 to 6 as free and, for example, selects time slot 1 as its own future transmission time slot.
the station 1 also sends information about the time slot 2 recognized as occupied as a position relative to its own time slot 1, for example as a time slot increment +1, since the time slot 2 to be reported follows a time slot increment later.
a simultaneous notification of the address of the station 31 received in this way is advantageous for a response to this in order to identify the notification of the own time slot.
the message reaches the stations 3 to 7 in the time slot 1 in accordance with the field strength ratios 23, which then save the time slot 1 indirectly as occupied (M) for several periods due to the direct reception (E) and by adding the message +1, the latter, in order on the one hand to counter influences of field strength fluctuations and to be able to distribute this message over several periods and on the other hand not to prevent an update.
the last operating station 9 stores the time slots because of the field strength ratios 25 3 to 5 direct (E) and time slot 1 indirect (M) by busy signaling of stations 3 to 7 as occupied.
the station 9 can select the free time slot 6, but also the time slot 2 already used by the station 31, as its own transmission time slot.
unnecessary transmission time slots are avoided, so that practically all warning systems can be operated on a high-frequency channel, even if they collide with neighboring systems.
a sporadic time slot change stimulated, for example, by a random algorithm in the processor 55, enables problem-free implementation of the stations on moving construction sites, since the station's previously occupied time slot is also checked.
the processor 55 of the signaling station 5 can stimulate the processors 55 of the signaling stations (1, 3, 7, 9) to start or stop operation or to change the operating mode, also as a function of a field strength measurement in the transmission, by corresponding information about the high-frequency channel. / Receiving part 51, the operation as a relay station being of particular importance in the case of poor radio propagation. Such a situation is shown in FI G. 2.
a reporting station (11) transmits its information to the warning station 5 via a relay station 9, in that the processor 55 of the relay station 9 buffers the received information in the memory 61 and in the next own transmission time slot plus information identifying the time between the reception time slot and the own transmission time slot sends the delay in the relay station to the warning station 5, the processor 55 subtracts this delay time from a stored (59) maximum permissible delay time and temporarily stores (61) the time when it is exceeded as a result of which unsuccessful reception triggers the alarm (63) from this point in time .
the implementation of the stations (1 to 11) becomes problem-free in terms of security if the processor 55 in the warning station 5 can determine their distance and direction by means of adjustable location addresses (67) by comparison with the location addresses received as information, and thus predetermined in the memory 59 Check minimum distance to announcing reporting stations (1, 11).
the processor 55 of the warning station 5 can, in an equivalent manner, check the new distance of the converted stations and automatically select the operating modes accordingly. For example, when the warning station 5 is moved to position 5a, the relay station 9 can be moved to a deregistering station can be switched due to the new conditions by warning station 5.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Train Traffic Observation, Control, And Security (AREA)
Mobile Radio Communication Systems (AREA)
Radar Systems Or Details Thereof (AREA)
Near-Field Transmission Systems (AREA)

EP91102081A 1990-02-21 1991-02-14 Procédé et dispositif pour alerter les personnes dans la zone de voie ferrée sur un canal de communication à haute fréquence Expired - Lifetime EP0443438B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE4005354		1990-02-21
DE4005354A DE4005354A1 (de)	1990-02-21	1990-02-21	Verfahren und einrichtung zur warnung von personen im gleisbereich ueber einen hochfrequenten nachrichtenkanal

Publications (3)

Publication Number	Publication Date
EP0443438A2 true EP0443438A2 (fr)	1991-08-28
EP0443438A3 EP0443438A3 (en)	1992-06-10
EP0443438B1 EP0443438B1 (fr)	1995-01-04

Family

ID=6400597

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP91102081A Expired - Lifetime EP0443438B1 (fr)	1990-02-21	1991-02-14	Procédé et dispositif pour alerter les personnes dans la zone de voie ferrée sur un canal de communication à haute fréquence

Country Status (4)

Country	Link
EP (1)	EP0443438B1 (fr)
AT (1)	ATE116611T1 (fr)
DE (1)	DE4005354A1 (fr)
ES (1)	ES2067778T3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5735492A (en) *	1991-02-04	1998-04-07	Pace; Joseph A.	Railroad crossing traffic warning system apparatus and method therefore
US6113037A (en) *	1991-02-04	2000-09-05	Eva Signal Corporation	Railroad maintenance-of-way personnel warning system apparatus and method therefor
DE4425969C1 (de) *	1994-07-22	1995-07-06	Stein Gmbh	Verfahren und Einrichtung zur Warnung von Personen im Gleisbereich
DE4433177C1 (de)	1994-07-22	1996-02-08	Stein Gmbh	Verfahren und Einrichtung zur Warnung von Personen im Gleisbereich
DE4428822C1 (de)	1994-08-16	1996-04-25	Stein Gmbh	Verfahren und Einrichtung zur Warnung von Personen im Gleisbereich
DE19627681C1 (de) *	1996-07-10	1997-07-24	Stein Gmbh	Verfahren und Einrichtung zur Warnung von Personen im Gleisbereich
ES2189584B1 (es) *	2000-03-08	2004-11-16	Lineas Y Cables, S.A.	Sistema de aviso de llegada de circulacion ferroviaria.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2211313C3 (de) *	1972-03-09	1974-08-29	Robert Bosch Elektronik Gmbh, 1000 Berlin Und 7000 Stuttgart	Verfahren zum drahtlosen Steuern von beweglichen Objekten
DE2818916C2 (de) *	1978-04-28	1986-08-21	Steuerungstechnik GmbH, 8000 München	Einrichtung zum Synchronisieren mehrerer autonom im Zeitmultiplexbetrieb sendender Sendestationen
BE894853A (fr) *	1982-04-28	1983-02-14	Theimeg Elektronikgerate G M B	Procede pour la synchronisation de postes transmetteurs autonomes, egalement autorises entre eux et fonctionnant sur une frequence d'emission en multiplexage par repartition dans le temps
DE3603907C1 (en) *	1986-02-07	1987-04-16	Stein Gmbh	Method and device for time division multiplex operation of a changing number of stations operating autonomously on one communications channel

1990
- 1990-02-21 DE DE4005354A patent/DE4005354A1/de active Granted
1991
- 1991-02-14 EP EP91102081A patent/EP0443438B1/fr not_active Expired - Lifetime
- 1991-02-14 AT AT91102081T patent/ATE116611T1/de not_active IP Right Cessation
- 1991-02-14 ES ES91102081T patent/ES2067778T3/es not_active Expired - Lifetime

Also Published As

Publication number	Publication date
DE4005354C2 (fr)	1992-01-09
ES2067778T3 (es)	1995-04-01
ATE116611T1 (de)	1995-01-15
DE4005354A1 (de)	1991-08-22
EP0443438A3 (en)	1992-06-10
EP0443438B1 (fr)	1995-01-04

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