JPS57142106A - Vehicular receiver in automatic train controlling system - Google Patents

Vehicular receiver in automatic train controlling system

Info

Publication number
JPS57142106A
JPS57142106A JP2655681A JP2655681A JPS57142106A JP S57142106 A JPS57142106 A JP S57142106A JP 2655681 A JP2655681 A JP 2655681A JP 2655681 A JP2655681 A JP 2655681A JP S57142106 A JPS57142106 A JP S57142106A
Authority
JP
Japan
Prior art keywords
signal
carrier
output
selecting
level
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
JP2655681A
Other languages
Japanese (ja)
Other versions
JPH0313801B2 (en
Inventor
Masashi Okuyama
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.)
Nippon Signal Co Ltd
Original Assignee
Nippon 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 Nippon Signal Co Ltd filed Critical Nippon Signal Co Ltd
Priority to JP2655681A priority Critical patent/JPS57142106A/en
Publication of JPS57142106A publication Critical patent/JPS57142106A/en
Publication of JPH0313801B2 publication Critical patent/JPH0313801B2/ja
Granted 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
    • B61L3/221—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation using track circuits

Landscapes

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

Abstract

PURPOSE:To enable the digitalization of a signal selecting circuit by comparing the receiving levels of different signals, selecting the signal of high level and sorting the frequency of the signal. CONSTITUTION:When a train enters from an ATC blocking zone of a carrier f1 and a signal fm into a blocking zone of a carrier f2 and a signal fl, the output level of a selecting and amplifying circuit F1A for the carrier f1 is gradually attenuated in the vicinity of the boundary between the zones, while the output level of a selecting land amplifying circuit F2A for the carrier f2 is gradually increased. Accordingly, the output of a level comparator LC varies from the output state of indicating f1>f2 of the received signal level to the output state of indicating f1<f2, and the output wave applied from a switching circuit X to a detection demodulating circuit D is switched from the waveform of the carrier f1 and the signal fm to the waveform of the carrier f2 and the signal fl.
JP2655681A 1981-02-25 1981-02-25 Vehicular receiver in automatic train controlling system Granted JPS57142106A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2655681A JPS57142106A (en) 1981-02-25 1981-02-25 Vehicular receiver in automatic train controlling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2655681A JPS57142106A (en) 1981-02-25 1981-02-25 Vehicular receiver in automatic train controlling system

Publications (2)

Publication Number Publication Date
JPS57142106A true JPS57142106A (en) 1982-09-02
JPH0313801B2 JPH0313801B2 (en) 1991-02-25

Family

ID=12196798

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2655681A Granted JPS57142106A (en) 1981-02-25 1981-02-25 Vehicular receiver in automatic train controlling system

Country Status (1)

Country Link
JP (1) JPS57142106A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6356101A (en) * 1986-08-25 1988-03-10 Toshiba Corp Frequency detector for electric rail car
WO2013041376A1 (en) * 2011-09-21 2013-03-28 Siemens Aktiengesellschaft Method for operating a vehicle-side receiver device of a train control system and vehicle-side receiver device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6356101A (en) * 1986-08-25 1988-03-10 Toshiba Corp Frequency detector for electric rail car
WO2013041376A1 (en) * 2011-09-21 2013-03-28 Siemens Aktiengesellschaft Method for operating a vehicle-side receiver device of a train control system and vehicle-side receiver device
US9356635B2 (en) 2011-09-21 2016-05-31 Siemens Aktiengesellschaft Method for operating a vehicle-side receiver device of a train control system and vehicle-side receiver device

Also Published As

Publication number Publication date
JPH0313801B2 (en) 1991-02-25

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