IT1170809B - Selettore di segnale alternativo di maggiore ampiezza fra due segnali di diverse frequenze in particolare per la trasmissione di informazioni sulla circolazione ferroviaria - Google Patents

Selettore di segnale alternativo di maggiore ampiezza fra due segnali di diverse frequenze in particolare per la trasmissione di informazioni sulla circolazione ferroviaria

Info

Publication number
IT1170809B
IT1170809B IT48032/81A IT4803281A IT1170809B IT 1170809 B IT1170809 B IT 1170809B IT 48032/81 A IT48032/81 A IT 48032/81A IT 4803281 A IT4803281 A IT 4803281A IT 1170809 B IT1170809 B IT 1170809B
Authority
IT
Italy
Prior art keywords
signals
transmission
information
different frequencies
selector switch
Prior art date
Application number
IT48032/81A
Other languages
English (en)
Other versions
IT8148032A1 (it
IT8148032A0 (it
Inventor
Jean Salmon
Laurent Daniel
Original Assignee
Jeumont Schneider
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 Jeumont Schneider filed Critical Jeumont Schneider
Publication of IT8148032A0 publication Critical patent/IT8148032A0/it
Publication of IT8148032A1 publication Critical patent/IT8148032A1/it
Application granted granted Critical
Publication of IT1170809B publication Critical patent/IT1170809B/it

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/005—Circuits for comparing several input signals and for indicating the result of this comparison, e.g. equal, different, greater, smaller (comparing phase or frequency of 2 mutually independent oscillations in demodulators)
    • 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 vehicle train, e.g. to release brake, 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
    • B61L3/243—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 using alternating current
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H04L27/156—Demodulator circuits; Receiver circuits with demodulation using temporal properties of the received signal, e.g. detecting pulse width
    • H04L27/1563—Demodulator circuits; Receiver circuits with demodulation using temporal properties of the received signal, e.g. detecting pulse width using transition or level detection
IT48032/81A 1980-03-18 1981-03-16 Selettore di segnale alternativo di maggiore ampiezza fra due segnali di diverse frequenze in particolare per la trasmissione di informazioni sulla circolazione ferroviaria IT1170809B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8005981A FR2478901B1 (fr) 1980-03-18 1980-03-18 Etage de selection du signal alternatif de plus grande amplitude parmi deux signaux de frequences differentes

Publications (3)

Publication Number Publication Date
IT8148032A0 IT8148032A0 (it) 1981-03-16
IT8148032A1 IT8148032A1 (it) 1982-09-16
IT1170809B true IT1170809B (it) 1987-06-03

Family

ID=9239775

Family Applications (1)

Application Number Title Priority Date Filing Date
IT48032/81A IT1170809B (it) 1980-03-18 1981-03-16 Selettore di segnale alternativo di maggiore ampiezza fra due segnali di diverse frequenze in particolare per la trasmissione di informazioni sulla circolazione ferroviaria

Country Status (12)

Country Link
US (1) US4488238A (it)
AU (1) AU544840B2 (it)
BE (1) BE887913A (it)
BR (1) BR8107468A (it)
CA (1) CA1166707A (it)
DE (1) DE3140626C1 (it)
FR (1) FR2478901B1 (it)
GB (1) GB2083980B (it)
IT (1) IT1170809B (it)
NL (1) NL8120059A (it)
WO (1) WO1981002714A1 (it)
ZA (1) ZA811786B (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4625279A (en) * 1984-05-11 1986-11-25 Westinghouse Electric Corp. Vehicle speed control apparatus and method
FR2736225B1 (fr) * 1995-06-27 1997-08-01 Gec Alsthom Transport Sa Dispositif permettant de s'affranchir des problemes de diaphonie lors de la localisation d'un vehicule se deplacant le long de moyens de propagation d'ondes electromagnetiques
US7027897B2 (en) * 2004-01-27 2006-04-11 Bombardier Transportation Gmbh Apparatus and method for suppressing mechanical resonance in a mass transit vehicle

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL298515A (it) * 1962-10-01
GB1151614A (en) * 1967-02-22 1969-05-14 Gen Electric & English Elect Improvements in or relating to Electric Signal Receivers
GB1164386A (en) * 1967-05-26 1969-09-17 Standard Telephones Cables Ltd Frequency Separation.
FR2076219A5 (it) * 1970-01-07 1971-10-15 Signaux Entr Electriques
US3760278A (en) * 1970-12-23 1973-09-18 Thomson Csf Limited range radiocommunication system
FR2176266A5 (it) * 1972-03-17 1973-10-26 Jeumont Schneider
FR2313812A2 (fr) * 1972-03-17 1976-12-31 Jeumont Schneider Selecteur a securite intrinseque pour signaux a frequence de recurrence
BE799885R (fr) * 1972-05-26 1973-09-17 Thomson Csf Perfectionnements aux dispositifs d'intercommunication a rayonnement limite,
US3973746A (en) * 1975-05-02 1976-08-10 Walt Disney Productions Collision avoidance system

Also Published As

Publication number Publication date
CA1166707A (fr) 1984-05-01
ZA811786B (en) 1982-04-28
DE3140626C1 (de) 1984-03-08
AU544840B2 (en) 1985-06-13
GB2083980B (en) 1984-06-06
AU6786981A (en) 1981-10-09
BE887913A (fr) 1981-07-01
WO1981002714A1 (fr) 1981-10-01
FR2478901A1 (fr) 1981-09-25
GB2083980A (en) 1982-03-31
IT8148032A1 (it) 1982-09-16
NL8120059A (en) 1982-02-01
US4488238A (en) 1984-12-11
FR2478901B1 (fr) 1986-02-07
IT8148032A0 (it) 1981-03-16
BR8107468A (pt) 1982-02-09

Similar Documents

Publication Publication Date Title
AR222905A1 (es) Bogie de vagon ferroviario
KR850003818A (ko) 신호 전송용 선체
FR2464864B1 (fr) Perfectionnements pour suspensions de voitures de chemin de fer
AR223233A1 (es) Bogie de vehiculo ferroviario
GB2069952B (en) Rotary railroad car coupler system
IT8321610A0 (it) Analizzatore di frequenza di treni di segnali.
AR229946A1 (es) Enganche de vagon ferroviario
IT1170809B (it) Selettore di segnale alternativo di maggiore ampiezza fra due segnali di diverse frequenze in particolare per la trasmissione di informazioni sulla circolazione ferroviaria
GB1553336A (en) Railway car coupler
ZA846046B (en) Railway train information transmission
AU513030B2 (en) Railway signalling circuits
DK157357C (da) Jernbanehjul
AU5902480A (en) Railway signalling circuits
AU557958B2 (en) Railway turnouts
AR230029A1 (es) Bogie de vagon ferroviario
GB2151573B (en) Railway car coupling arrangements
BR8406602A (pt) Vagao ferroviario
AR223557A1 (es) Bogie de vagon ferroviario
IE830375L (en) Railroad track circuit.
DK157180C (da) Jernbanehjul
ZA846045B (en) Railway train information transmission
GB2077822B (en) Recording railway track measurements
AU7552281A (en) Improved railway track circuit
YU249277A (en) Railroad crossing on the track level
JPS574458A (en) Horn block pan for railway rolling stock