GB2017991A - Multi-channel receiver control apparatus - Google Patents

Multi-channel receiver control apparatus

Info

Publication number
GB2017991A
GB2017991A GB7909844A GB7909844A GB2017991A GB 2017991 A GB2017991 A GB 2017991A GB 7909844 A GB7909844 A GB 7909844A GB 7909844 A GB7909844 A GB 7909844A GB 2017991 A GB2017991 A GB 2017991A
Authority
GB
United Kingdom
Prior art keywords
fail
safe
channel
train
modulation
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
GB7909844A
Other versions
GB2017991B (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 GB7909844A priority Critical patent/GB2017991B/en
Publication of GB2017991A publication Critical patent/GB2017991A/en
Application granted granted Critical
Publication of GB2017991B publication Critical patent/GB2017991B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
    • B61L3/16—Continuous control along the route
    • B61L3/22—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation
    • B61L3/24—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation employing different frequencies or coded pulse groups, e.g. in combination with track circuits

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

An automatic train protection (A.T.P.) system comprises a fail-safe A.T.P. channel and a non-fail-safe A.T.P. channel, each separately responsive to maximum speed limit signals transmitted to a train by a track circuit. A number of alternative speed limits are possible and each is indicated by a respective modulation frequency of a track circuit carrier frequency. Since A.T.P. equipment may detect several modulation frequencies leading to danger, the non-fail-safe channel includes mixed modulation detecting means to detect the presence of more than one speed limit modulation frequency, and to inhibit the non-fail-safe channel output signal causing the train's braking system to be operated. <IMAGE>
GB7909844A 1978-03-23 1979-03-21 Multi-channel receiver control apparatus Expired GB2017991B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7909844A GB2017991B (en) 1978-03-23 1979-03-21 Multi-channel receiver control apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1174778 1978-03-23
GB7909844A GB2017991B (en) 1978-03-23 1979-03-21 Multi-channel receiver control apparatus

Publications (2)

Publication Number Publication Date
GB2017991A true GB2017991A (en) 1979-10-10
GB2017991B GB2017991B (en) 1982-07-28

Family

ID=26248489

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7909844A Expired GB2017991B (en) 1978-03-23 1979-03-21 Multi-channel receiver control apparatus

Country Status (1)

Country Link
GB (1) GB2017991B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2534863A1 (en) * 1982-10-22 1984-04-27 Alsthom Atlantique Safety information system for railway applications
GB2146470A (en) * 1983-07-29 1985-04-17 Westinghouse Brake & Signal Proving safe operation
GB2146471A (en) * 1983-07-29 1985-04-17 Westinghouse Brake & Signal Proving safe operation
EP0231661A2 (en) * 1986-02-01 1987-08-12 Westinghouse Brake And Signal Holdings Limited Positive route identification
EP0233017A2 (en) * 1986-02-01 1987-08-19 Westinghouse Brake And Signal Holdings Limited Automatic railway vehicle operation

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2534863A1 (en) * 1982-10-22 1984-04-27 Alsthom Atlantique Safety information system for railway applications
GB2146470A (en) * 1983-07-29 1985-04-17 Westinghouse Brake & Signal Proving safe operation
GB2146471A (en) * 1983-07-29 1985-04-17 Westinghouse Brake & Signal Proving safe operation
US4672223A (en) * 1983-07-29 1987-06-09 Westinghouse Brake & Signal Company, Limited Proving safe operation
AU574963B2 (en) * 1983-07-29 1988-07-14 Westinghouse Brake And Signal Company Limited Proving safe operation
EP0231661A2 (en) * 1986-02-01 1987-08-12 Westinghouse Brake And Signal Holdings Limited Positive route identification
EP0233017A2 (en) * 1986-02-01 1987-08-19 Westinghouse Brake And Signal Holdings Limited Automatic railway vehicle operation
EP0231661A3 (en) * 1986-02-01 1988-12-28 Westinghouse Brake And Signal Holdings Limited Positive route identification
EP0233017A3 (en) * 1986-02-01 1988-12-28 Westinghouse Brake And Signal Company Limited Automatic railway vehicle operation
AU599073B2 (en) * 1986-02-01 1990-07-12 Westinghouse Brake And Signal Company Limited Automatic railway vehicle operation

Also Published As

Publication number Publication date
GB2017991B (en) 1982-07-28

Similar Documents

Publication Publication Date Title
JPS54109714A (en) Method of and device for transmitting numerous information signals in one common carrier frequency area from various transmitters to one receiver
DE3476006D1 (en) External synchronizing method and apparatus for information transmission system
GB1550701A (en) Seismic data processing system and method
FR2395652B1 (en) METHOD AND DEVICE FOR TRANSMITTING DIGITAL SIGNALS
GB2017991A (en) Multi-channel receiver control apparatus
JPS5715542A (en) Device and method for providing modulation format for transmitting multiple wide band signal
EP0371445A3 (en) Transmission line monitoring system
FR2313814A1 (en) SYSTEM FOR SIGNAL TRANSMISSION BY DELTA MODULATION OF COMPRESSED SIGNALS
GB2103056B (en) Apparatus for transmitting an amplitude modulated stereophonic signal
FR2425184B1 (en) SYSTEM FOR BIDIRECTIONAL TRANSMISSION OF LOCKED SIGNALS
DE3363463D1 (en) Method of detecting the interruption of the transmission of light signals, and apparatus therefor
JPS5787264A (en) Line monitoring system for high-level transmission control procedure
SE8102114L (en) CLUTCH DEVICE ON SAVING CIRCUIT
ATA172380A (en) CIRCUIT FOR SIMULTANEOUS, INDEPENDENT, BIDIRECTIONAL TRANSMISSION OF SIGNALS
JPS57108769A (en) Position measuring device
JPS51119942A (en) Detector for abnormal transmission signal abnormal detector
JPS5617537A (en) Information transmitting system using optical data bus line
JPS52101A (en) System for transmitting acoustic sigal
FI881048A (en) FOERFARANDE OCH APPARAT FOER OEVERFOERING AV EN TELEVISIONSSIGNAL.
JPS5568753A (en) Station guidance automatic broadcast device
JPS5566157A (en) Electric apparatus
JPS5732145A (en) Pilot control system
JPS5398704A (en) Optical multiplex transmission system
JPS5631249A (en) Signal transmission system
ES8800465A1 (en) Fast fourier transform processing unit for railway vehicle

Legal Events

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

Effective date: 19960321