CA2004562A1 - System comprising a processor - Google Patents

System comprising a processor

Info

Publication number
CA2004562A1
CA2004562A1 CA2004562A CA2004562A CA2004562A1 CA 2004562 A1 CA2004562 A1 CA 2004562A1 CA 2004562 A CA2004562 A CA 2004562A CA 2004562 A CA2004562 A CA 2004562A CA 2004562 A1 CA2004562 A1 CA 2004562A1
Authority
CA
Canada
Prior art keywords
processors
processor
another
operating correctly
check
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
CA2004562A
Other languages
French (fr)
Other versions
CA2004562C (en
Inventor
Terence Malcolm George
Richard John Roberts
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 Mobility Ltd
Original Assignee
Westinghouse Brake and Signal Holdings Ltd
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 Westinghouse Brake and Signal Holdings Ltd filed Critical Westinghouse Brake and Signal Holdings Ltd
Publication of CA2004562A1 publication Critical patent/CA2004562A1/en
Application granted granted Critical
Publication of CA2004562C publication Critical patent/CA2004562C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
    • 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
    • B61L21/04—Electrical locking and release of the route; Electrical repeat locks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0706—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment
    • G06F11/0721—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment within a central processing unit [CPU]
    • G06F11/0724—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation the processing taking place on a specific hardware platform or in a specific software environment within a central processing unit [CPU] in a multiprocessor or a multi-core unit
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0751—Error or fault detection not based on redundancy
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0796—Safety measures, i.e. ensuring safe condition in the event of error, e.g. for controlling element
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
    • G06F11/2205—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested
    • G06F11/2236—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested to test CPU or processors

Abstract

An interlocking system for a railway comprises a plurality of processors (A, B and C), the system having an input (1) for receiving input information and an output (2) for providing control information. Each of the processors is adapted to test itself to check that it is operating correctly and each of the processors is also adapted to test another of the processors to check that the other processor is operating correctly, each of the processors also being so tested by another of the processors. The system is shut down or put into a more restricted mode of operation if a fault in its operation is detected, either as a result of a processor's self-testing routine or as a result of one of the processors detecting that another processor is not operating correctly. This achieves the integrity of a "dual-channel" system with only a single "channel"
of hardware.
CA002004562A 1989-02-13 1989-11-27 System comprising a processor Expired - Lifetime CA2004562C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8903175.1 1989-02-13
GB8903175A GB2228114B (en) 1989-02-13 1989-02-13 A system comprising a processor

Publications (2)

Publication Number Publication Date
CA2004562A1 true CA2004562A1 (en) 1990-08-13
CA2004562C CA2004562C (en) 1998-07-07

Family

ID=10651582

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002004562A Expired - Lifetime CA2004562C (en) 1989-02-13 1989-11-27 System comprising a processor

Country Status (9)

Country Link
US (1) US5504860A (en)
EP (1) EP0382972B1 (en)
JP (1) JPH02242438A (en)
AU (1) AU634748B2 (en)
CA (1) CA2004562C (en)
DE (1) DE68926667T2 (en)
ES (1) ES2087086T3 (en)
GB (1) GB2228114B (en)
ZA (1) ZA90447B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2730074B1 (en) * 1995-01-27 1997-04-04 Sextant Avionique FAULT-TOLERANT COMPUTER ARCHITECTURE
US5671348A (en) * 1995-06-06 1997-09-23 General Railway Signal Corporation Non-vital turn off of vital output circuit
DE19653551C1 (en) * 1996-12-20 1998-02-05 Siemens Ag Functional ability determination method for processing unit
GB2348034A (en) * 1999-03-17 2000-09-20 Westinghouse Brake & Signal An interlocking for a railway system
US6922625B2 (en) * 2002-12-12 2005-07-26 Honeywell International Inc. Jet engine control and protection system and method
DE102004024386A1 (en) * 2004-05-17 2005-12-15 Siemens Ag Method and circuit arrangement for testing functions and / or algorithms implemented in electronic circuits
US8028961B2 (en) 2006-12-22 2011-10-04 Central Signal, Llc Vital solid state controller
JP5095273B2 (en) 2007-06-22 2012-12-12 株式会社東芝 Control device
CN101580073B (en) * 2008-05-12 2012-01-25 卡斯柯信号有限公司 Computer interlocking system code bit-level redundancy method
JP5404437B2 (en) * 2010-01-13 2014-01-29 株式会社東芝 Safety output device
US20130063282A1 (en) 2010-05-31 2013-03-14 Central Signal, Llc Roadway detection
CN103144657B (en) * 2013-03-15 2015-07-22 卡斯柯信号有限公司 Main processing subsystem provided with check plate and used for general trackside safety platform

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2162093B1 (en) * 1971-12-02 1977-04-08 Hitachi Ltd
GB1434186A (en) * 1972-04-26 1976-05-05 Gen Electric Co Ltd Multiprocessor computer systems
DE2612100A1 (en) * 1976-03-22 1977-10-06 Siemens Ag DIGITAL DATA PROCESSING ARRANGEMENT, IN PARTICULAR FOR RAILWAY SAFETY TECHNOLOGY
DE2651314C2 (en) * 1976-11-10 1982-03-25 Siemens AG, 1000 Berlin und 8000 München Safety output circuit for a data processing system that emits binary signals
DE2701925C3 (en) * 1977-01-19 1981-10-15 Standard Elektrik Lorenz Ag, 7000 Stuttgart Vehicle control with two on-board computers
GB1604492A (en) * 1978-05-30 1981-12-09 Westinghouse Brake & Signal Railway control systems
DE2939487A1 (en) * 1979-09-28 1981-04-16 Siemens AG, 1000 Berlin und 8000 München COMPUTER ARCHITECTURE BASED ON A MULTI-MICROCOMPUTER STRUCTURE AS A FAULT-TOLERANT SYSTEM
DE3003291C2 (en) * 1980-01-30 1983-02-24 Siemens AG, 1000 Berlin und 8000 München Two-channel data processing arrangement for railway safety purposes
US4581700A (en) * 1981-08-07 1986-04-08 Sab Harmon Industries, Inc. Processing system for grade crossing warning
FR2512980B1 (en) * 1981-09-14 1983-12-23 Aero Etudes Conseils
DE3137450C2 (en) * 1981-09-21 1984-03-22 Siemens AG, 1000 Berlin und 8000 München Safety output circuit for a data processing system
US4517639A (en) * 1982-05-13 1985-05-14 The Boeing Company Fault scoring and selection circuit and method for redundant system
EP0096510B1 (en) * 1982-06-03 1988-07-27 LUCAS INDUSTRIES public limited company Control system primarily responsive to signals from digital computers
US4644538A (en) * 1982-06-16 1987-02-17 The Boeing Company Autopilot flight director system
FR2540685A1 (en) * 1983-02-03 1984-08-10 Jeumont Schneider INTERFACE FOR CONNECTING A COMPUTER SYSTEM TO AN ACTUATOR DEVICE
US4695946A (en) * 1984-10-25 1987-09-22 Unisys Corporation Maintenance subsystem for computer network including power control and remote diagnostic center
US4622667A (en) * 1984-11-27 1986-11-11 Sperry Corporation Digital fail operational automatic flight control system utilizing redundant dissimilar data processing
AU568977B2 (en) * 1985-05-10 1988-01-14 Tandem Computers Inc. Dual processor error detection system
JPS6272248A (en) * 1985-09-25 1987-04-02 Hitachi Ltd Active/standby changeover method for data transmission system
US4873685A (en) * 1988-05-04 1989-10-10 Rockwell International Corporation Self-checking voting logic for fault tolerant computing applications

Also Published As

Publication number Publication date
EP0382972B1 (en) 1996-06-12
EP0382972A2 (en) 1990-08-22
DE68926667T2 (en) 1996-10-24
DE68926667D1 (en) 1996-07-18
AU634748B2 (en) 1993-03-04
GB2228114A (en) 1990-08-15
CA2004562C (en) 1998-07-07
ES2087086T3 (en) 1996-07-16
AU4925890A (en) 1990-08-16
ZA90447B (en) 1990-10-31
EP0382972A3 (en) 1991-08-07
GB2228114B (en) 1993-02-10
US5504860A (en) 1996-04-02
GB8903175D0 (en) 1989-03-30
JPH02242438A (en) 1990-09-26

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