GB2022895A - Fault detector - Google Patents

Fault detector

Info

Publication number
GB2022895A
GB2022895A GB7918694A GB7918694A GB2022895A GB 2022895 A GB2022895 A GB 2022895A GB 7918694 A GB7918694 A GB 7918694A GB 7918694 A GB7918694 A GB 7918694A GB 2022895 A GB2022895 A GB 2022895A
Authority
GB
United Kingdom
Prior art keywords
signals
energised
unsafe
alternating
devices
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
GB7918694A
Other versions
GB2022895B (en
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 Co 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 Co Ltd filed Critical Westinghouse Brake and Signal Co Ltd
Priority to GB7918694A priority Critical patent/GB2022895B/en
Publication of GB2022895A publication Critical patent/GB2022895A/en
Application granted granted Critical
Publication of GB2022895B publication Critical patent/GB2022895B/en
Expired 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
    • G06F11/07—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
    • 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 vehicle train, e.g. pedals
    • B61L1/20—Safety arrangements for preventing or indicating malfunction of the device, e.g. by leakage current, by lightning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L19/00—Arrangements for interlocking between points and signals by means of a single interlocking device, e.g. central control
    • B61L19/06—Interlocking devices having electrical operation
    • 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
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/18—Error detection or correction of the data by redundancy in hardware using passive fault-masking of the redundant circuits
    • G06F11/183—Error detection or correction of the data by redundancy in hardware using passive fault-masking of the redundant circuits by voting, the voting not being performed by the redundant components
    • G06F11/184—Error detection or correction of the data by redundancy in hardware using passive fault-masking of the redundant circuits by voting, the voting not being performed by the redundant components where the redundant components implement processing functionality
    • 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
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/18—Error detection or correction of the data by redundancy in hardware using passive fault-masking of the redundant circuits
    • G06F11/181—Eliminating the failing redundant component

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Safety Devices In Control Systems (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Abstract

In a computer based railway interlocking control system, the railway traffic control devices, e.g. points and signals, are arranged to be controlled by signals in one of two possible steady states and the interlocking control means (30, 31, 32, Fig. 2) is arranged to produce control signals in the steady state for de-energised or "safe" device settings and in an alternating state for energised or potentially "unsafe" settings. The alternating control signals (33, 34, 35 or 38) must be converted to the corresponding steady state to operate the devices thus, the converting or restoring circuit discriminates against dormant wrong side failures, i.e. "unsafe" signals to increase the inherent safety of the system. <IMAGE>
GB7918694A 1978-06-10 1979-05-29 Fault detection Expired GB2022895B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7918694A GB2022895B (en) 1978-06-10 1979-05-29 Fault detection

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7826669 1978-06-10
GB7918694A GB2022895B (en) 1978-06-10 1979-05-29 Fault detection

Publications (2)

Publication Number Publication Date
GB2022895A true GB2022895A (en) 1979-12-19
GB2022895B GB2022895B (en) 1983-01-12

Family

ID=26267946

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7918694A Expired GB2022895B (en) 1978-06-10 1979-05-29 Fault detection

Country Status (1)

Country Link
GB (1) GB2022895B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2315587A (en) * 1996-07-19 1998-02-04 Mitsubishi Electric Corp Computerized dual-system interlocking apparatus
CN112158235A (en) * 2020-08-25 2021-01-01 通号城市轨道交通技术有限公司 Outdoor signal equipment control method and system for urban rail transit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2315587A (en) * 1996-07-19 1998-02-04 Mitsubishi Electric Corp Computerized dual-system interlocking apparatus
GB2315587B (en) * 1996-07-19 1998-09-02 Mitsubishi Electric Corp Computerized dual-system interlocking apparatus
CN112158235A (en) * 2020-08-25 2021-01-01 通号城市轨道交通技术有限公司 Outdoor signal equipment control method and system for urban rail transit

Also Published As

Publication number Publication date
GB2022895B (en) 1983-01-12

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee