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EP1273500B1 - Commande pour un relais - Google Patents

Commande pour un relais Download PDF

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Publication number
EP1273500B1
EP1273500B1 EP01440199A EP01440199A EP1273500B1 EP 1273500 B1 EP1273500 B1 EP 1273500B1 EP 01440199 A EP01440199 A EP 01440199A EP 01440199 A EP01440199 A EP 01440199A EP 1273500 B1 EP1273500 B1 EP 1273500B1
Authority
EP
European Patent Office
Prior art keywords
computer
control signals
control
relay
sequence
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
EP01440199A
Other languages
German (de)
English (en)
Other versions
EP1273500A1 (fr
Inventor
Kassen Oldewurtel
Rainer Klemm
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 Lucent SAS
Original Assignee
Alcatel SA
Nokia Inc
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 Alcatel SA, Nokia Inc filed Critical Alcatel SA
Priority to AT01440199T priority Critical patent/ATE337954T1/de
Priority to EP01440199A priority patent/EP1273500B1/fr
Priority to DE50110879T priority patent/DE50110879D1/de
Publication of EP1273500A1 publication Critical patent/EP1273500A1/fr
Application granted granted Critical
Publication of EP1273500B1 publication Critical patent/EP1273500B1/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
    • B61L21/00—Station blocking between signal boxes in one yard
    • B61L21/06—Vehicle-on-line indication; Monitoring locking and release of the route
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/002—Monitoring or fail-safe circuits
    • H01H47/004—Monitoring or fail-safe circuits using plural redundant serial connected relay operated contacts in controlled circuit

Definitions

  • the invention relates to a controller for a relay.
  • Each computer is e.g. executed as a microprocessor or microcontroller. Calculate the computer that their respective relay should switch, so they give appropriate control signals to their outputs. If both control signals are present, both relays switch and the total contact is closed.
  • a defective computer or a malfunction of a software of a computer can lead to uncontrolled control signals, which can lead to unwanted switching of the relay.
  • the so-called dynamic control has been developed in which a switching operation is initiated by a continuous 0/1 sequence.
  • the relay does not switch until it has received a continuous 0/1 sequence from the respective computer, ie a clock signal.
  • Fig. 1 shows the principle of a dynamic control.
  • Channel 1 of a first computer ⁇ C1 is given to a first control circuit.
  • the first control circuit includes a capacitor C1, two diodes D1, D2 and a switching contact K1, which are interconnected.
  • Capacitor C1 and diode D2 are connected in series and are in the longitudinal branch.
  • Diode D1 is connected to capacitor C1 and diode D2 and is in a first shunt branch.
  • Switch contact K1 is connected to diode D2 and is located in a second shunt branch.
  • Switch contact K1 controls a first switch S1, which is connected in series with a second switch S2.
  • Channel 2 of a second computer ⁇ C2 is given to a second control circuit.
  • the second control circuit includes a capacitor C2, two diodes D3, D4 and a switching contact K2, which are interconnected.
  • Capacitor C2 and diode D4 are connected in series and are in the longitudinal branch.
  • Diode D3 is connected to capacitor C2 and diode D4 and is in a first shunt branch.
  • Switch contact K2 is connected to diode D4 and is located in a second shunt branch. Switching contact K2 controls the second switch S2.
  • Switch contacts K1 and K2 close the switches S1 and S2 only after receiving a continuous 0/1 sequence and continue to keep the switches S1 and S2 only closed as long as the continuous 0/1 sequence, which is a clock signal with a logic zero at 0 volts and a logical one equal to 5 volts.
  • the object of the invention is to provide a control for a relay, which allows a signal-technically safer control.
  • a signaling technology safer control is achieved by a coded control and monitoring of the control. Both hardware and software errors can be safely detected by signal technology.
  • Fig. 2 shows the principle of an inventive control of a relay.
  • the structure of the controller is substantially similar to the structure of Fig. 1.
  • Resistor R1 is connected to computer ⁇ C1, computer ⁇ C2 and capacitor C2 and is used for the feedback of the control signal of the computer ⁇ C2 on the computer ⁇ C1 for monitoring and evaluation.
  • Resistor R2 is connected to computer ⁇ C1, computer ⁇ C2 and capacitor C1 and is used for the feedback of the control signal of the computer ⁇ C1 on the computer ⁇ C2 for monitoring and evaluation.
  • the control signals are coded 0/1 sequences.
  • the coding is done, for example, by using a CRC code or such that a gap is deliberately inserted into a continuous 0/1 sequence, eg by omitting certain ones or in such a way that the number of ones is deliberately increased;
  • the other channel will send incorrectly and a fault of the other computer will be detected immediately. As a result, for example, no dynamic signal is output, so that the relay does not switch and thus the fail-safe overall contact is not turned on.
  • a failure or malfunction of a computer are thus recognizable during operation, whereby a signal-technically safer control is achieved.
  • a safety reaction occurs: The relay in the still functioning other channel is switched off.
  • the contact sets are connected in series, so that thereby the fail-safe total contact is switched off.
  • Fig. 2 shows a section with two computers.
  • three computers are used. For a two out of three decision, each of the three computers receives the feedback signals from the other two computers. The computer will then, according to the two of two arrangement of Fig. 2, turn off its own relay as soon as it does not receive a correctly coded signal from one of the two neighboring computers. All computers work e.g. with the same encoding that is known to all computers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Safety Devices In Control Systems (AREA)
  • Selective Calling Equipment (AREA)
  • Relay Circuits (AREA)
  • Hardware Redundancy (AREA)

Claims (4)

  1. Commande pour un relais, caractérisée en ce qu'un premier circuit de commande est prévu qui est adapté pour recevoir des signaux de commande d'un premier ordinateur (µC1) et coupler rétroactivement à un second ordinateur (µC2), et en ce qu'un second circuit de commande est prévu qui est adapté pour recevoir des signaux de commande du second ordinateur (µC2) et coupler rétroactivement au premier ordinateur (µC1).
  2. Commande pour un relais selon la revendication 1, caractérisée en ce que le premier ordinateur (µC1) est adapté pour produire des signaux de commande qui présentent une suite de 0-1 codée, et surveiller les signaux de commande du second ordinateur (µC2), et en ce que le second ordinateur (µC2) est adapté pour produire des signaux de commande qui présentent une suite de 0-1 codée et surveiller les signaux de commande du premier ordinateur (µC1).
  3. Commande pour un relais selon la revendication 1, caractérisée en ce que le premier circuit de commande comprend un condenseur (C1), deux diodes (D1, D2) et un contact de commutation (K1) et le rétrocouplage au second ordinateur (µC2) a lieu par une résistance ohmique (R2), et en ce que le second circuit de commande comprend un condenseur (C2), deux diodes (D3, D4) et un contact de commutation (K2) et le rétrocouplage au premier ordinateur (µC1) a lieu par une résistance ohmique (R1).
  4. Commande pour un relais selon la revendication 3, caractérisée en ce que les contacts de commutation (K1, K2) commandent respectivement un commutateur (S1, S2) et les deux commutateurs (S1, S2) sont commutés en série.
EP01440199A 2001-07-02 2001-07-02 Commande pour un relais Expired - Lifetime EP1273500B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT01440199T ATE337954T1 (de) 2001-07-02 2001-07-02 Steuerung für ein relais
EP01440199A EP1273500B1 (fr) 2001-07-02 2001-07-02 Commande pour un relais
DE50110879T DE50110879D1 (de) 2001-07-02 2001-07-02 Steuerung für ein Relais

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01440199A EP1273500B1 (fr) 2001-07-02 2001-07-02 Commande pour un relais

Publications (2)

Publication Number Publication Date
EP1273500A1 EP1273500A1 (fr) 2003-01-08
EP1273500B1 true EP1273500B1 (fr) 2006-08-30

Family

ID=8183248

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01440199A Expired - Lifetime EP1273500B1 (fr) 2001-07-02 2001-07-02 Commande pour un relais

Country Status (3)

Country Link
EP (1) EP1273500B1 (fr)
AT (1) ATE337954T1 (fr)
DE (1) DE50110879D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2235614B1 (es) 2003-07-31 2006-10-16 Fagor, S. Coop. Circuito de control seguro ante fallos para aparatos electrodomesticos.
DE112006004199A5 (de) * 2006-12-06 2009-11-05 Siemens Aktiengesellschaft Verfahren zum Ansteuern von zumindest zwei elektromagnetischen Relais und Steuereinrichtung zur Durchführung des Verfahrens

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3712833A1 (de) * 1986-05-29 1987-12-10 Alcatel Nv Sicherheitssteuereinrichtung
JP2721909B2 (ja) * 1989-01-18 1998-03-04 三菱電機株式会社 半導体記憶装置
JPH0833183A (ja) * 1994-07-15 1996-02-02 Toshiba Corp ディジタル形保護制御装置

Also Published As

Publication number Publication date
EP1273500A1 (fr) 2003-01-08
ATE337954T1 (de) 2006-09-15
DE50110879D1 (de) 2006-10-12

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