EP0686109B1 - Schaltung zur funktionsprüfung von freimelderelais - Google Patents

Schaltung zur funktionsprüfung von freimelderelais Download PDF

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Publication number
EP0686109B1
EP0686109B1 EP94906865A EP94906865A EP0686109B1 EP 0686109 B1 EP0686109 B1 EP 0686109B1 EP 94906865 A EP94906865 A EP 94906865A EP 94906865 A EP94906865 A EP 94906865A EP 0686109 B1 EP0686109 B1 EP 0686109B1
Authority
EP
European Patent Office
Prior art keywords
relays
track
test
relay
track occupancy
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.)
Expired - Lifetime
Application number
EP94906865A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0686109A1 (de
Inventor
Norbert Brandes
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.)
Siemens AG
Original Assignee
Siemens AG
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.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0686109A1 publication Critical patent/EP0686109A1/de
Application granted granted Critical
Publication of EP0686109B1 publication Critical patent/EP0686109B1/de
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
    • B61L1/18—Railway track circuits
    • B61L1/181—Details
    • 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
    • B61L1/20—Safety arrangements for preventing or indicating malfunction of the device, e.g. by leakage current, by lightning

Definitions

  • the invention relates to a circuit according to the preamble of claim 1.
  • a circuit has become known from DE 35 22 418 C2 in connection with a device for reporting the occupancy status of track sections in the area of an interlocking.
  • a track vacancy detection device in which the track vacancy reports of up to eight track circuit arrangements are processed by a two-computer system, which forwards corresponding vacancy and occupancy reports to a remote signal box.
  • Track circuits are provided there as free reporting devices for the individual track sections.
  • the associated track sections are usually only occupied for a short time during a train journey, but mostly released; Especially on routes with little traffic, it may happen that there is no train journey over these routes for hours or days. While the switching status of the track vacancy detection equipment used changes more frequently on frequently traveled routes, and thus any incorrect reactions of the vacancy detection equipment can be recognized by known signal processing methods which are safe in terms of signal technology, this is not readily the case with the vacancy detection devices on routes with little traffic.
  • the aforementioned DE-PS provides for the track circuit transmitters of the individual track circuits when the associated ones are registered Switch off track sections temporarily or connect a defined resistor to the input of the track circuit receiver. The computer system checks whether the associated track circuit receivers issue a busy message during this switch-off phase.
  • This test method can be used to determine whether the track circuit receivers of the track circuits involved in the test process can be dropped;
  • the output of busy messages, which result from the throwing of the track circuit receivers during the test operation, to the associated signal box must be prevented in a suitable manner so that occupancy messages that do not correspond to the actual occupancy of the track sections do not come into effect.
  • the object of the invention is to provide a circuit according to the preamble of claim 1, which allows the free signal relays of free signaling devices to be subjected to a waste test with as little effort and in a signal-technically safe manner, without the signal box thereby being subjected to this functional test and thus from being thrown off the free signal relay gets knowledge as long as this waste test leads to a positive result.
  • the invention solves this problem by applying the characterizing features of claim 1.
  • Malfunctions of the free signal relays involved in the test operation are detected by monitoring the operating state of the free signal relays during the test operation; for the signal box, the operating status messages of the free signal relays involved in the test operation are rendered ineffective by contacts of test relays; the functional behavior of the test and free signal relays is monitored via two channels.
  • the drawing shows a partial representation of the two free signaling circuit parts FMS1 and FMS2 of a two-channel track vacancy detection device which can be monitored by a secure computer system.
  • the track section not shown, can be monitored in any manner, preferably by axle counters or by a track circuit, for its occupancy status.
  • Free signal relays FM1 and FM2 are controlled by the axle counters or the track circuit, via whose series-connected contacts FM1 / 1 and FM2 / 1 any free signaling of the associated track section is reported to a signal box (not shown).
  • the two free signal relays are designed as signal relays; their contacts are forced.
  • the respective operating status of the two free signal relays is read into the two computer channels via contacts FM1 / 2 or FM2 / 2 and checked for agreement there.
  • any faulty reactions of one of the two free signal relays can be signaled in this way Detect safely, as long as it can be assumed that the free relay does not react in the same way in the other free channel in the same way.
  • the two free signaling relays must be subjected to a functional test (waste test) at predetermined maximum intervals.
  • the maximum permissible period of time between such functional tests corresponds to the failure failure disclosure time (MTBF) of the switching means for track monitoring of the switching means provided for their functional test and can be determined by calculation.
  • MTBF failure failure disclosure time
  • the two computer channels trigger time-shifted and alternately assigned test relays P1 and P2.
  • test relays are also designed as signal relays; their respective switching status is also read back via contacts P1 / 2 and P2 / 2 for monitoring purposes. After the test relay has been switched on, the associated free signal relays are temporarily dropped. The switching times of the test relays are dimensioned so that they clearly cover the switch-off times of the associated free signal relays on both sides. The switching of the test relays and the free signal relays is computer controlled. When the test relays are switched on, their series-connected contacts P1 / 1 and P2 / 1 in the signaling circuit to the signal box prevent the contacts FM1 / 1 or FM2 / 1 that open when the function of the signaling relay functions correctly .
  • the contacts P1 / 1 and P2 / 1 of the two test relays are to be designed as make contacts if the test relays are only switched on during test operation; If the test relays are constantly switched on outside the test mode, the two contacts must be designed as normally closed contacts.

Landscapes

  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Cookers (AREA)
  • Relay Circuits (AREA)
  • Emergency Protection Circuit Devices (AREA)
EP94906865A 1993-02-23 1994-02-14 Schaltung zur funktionsprüfung von freimelderelais Expired - Lifetime EP0686109B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9302965U DE9302965U1 (de) 1993-02-23 1993-02-23 Schaltung zur Funktionsprüfung von Freimelderelais
DE9302965U 1993-02-23
PCT/DE1994/000145 WO1994019223A1 (de) 1993-02-23 1994-02-14 Schaltung zur funktionsprüfung von freimelderelais

Publications (2)

Publication Number Publication Date
EP0686109A1 EP0686109A1 (de) 1995-12-13
EP0686109B1 true EP0686109B1 (de) 1997-01-15

Family

ID=6890029

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94906865A Expired - Lifetime EP0686109B1 (de) 1993-02-23 1994-02-14 Schaltung zur funktionsprüfung von freimelderelais

Country Status (5)

Country Link
EP (1) EP0686109B1 (cs)
AT (1) ATE147689T1 (cs)
DE (2) DE9302965U1 (cs)
DK (1) DK0686109T3 (cs)
WO (1) WO1994019223A1 (cs)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1198407B (de) * 1962-02-15 1965-08-12 Standard Elektrik Lorenz Ag Schaltung zur Funktionspruefung von Gleisfreimelderelais
DE3522418A1 (de) * 1985-06-22 1987-01-02 Standard Elektrik Lorenz Ag Einrichtung zur meldung des belegungszustandes von gleisabschnitten im bereich eines stellwerks

Also Published As

Publication number Publication date
WO1994019223A1 (de) 1994-09-01
EP0686109A1 (de) 1995-12-13
DE9302965U1 (de) 1993-04-29
DE59401606D1 (de) 1997-02-27
DK0686109T3 (da) 1997-07-21
ATE147689T1 (de) 1997-02-15

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