FR984502A - Remote control and monitoring systems - Google Patents

Remote control and monitoring systems

Info

Publication number
FR984502A
FR984502A FR984502DA FR984502A FR 984502 A FR984502 A FR 984502A FR 984502D A FR984502D A FR 984502DA FR 984502 A FR984502 A FR 984502A
Authority
FR
France
Prior art keywords
remote control
monitoring systems
monitoring
systems
remote
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.)
Expired
Application number
Other languages
French (fr)
Inventor
Leon Joly
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR984502A publication Critical patent/FR984502A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • H04Q9/08—Calling by using continuous ac
    • H04Q9/12—Calling by using continuous ac using combinations of frequencies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L7/00—Remote control of local operating means for points, signals, or trackmounted scotch-blocks
    • B61L7/06—Remote control of local operating means for points, signals, or trackmounted scotch-blocks using electrical transmission
    • B61L7/08—Circuitry
    • B61L7/083—Common line wire control using currents of different amplitudes, polarities, frequencies, or the like
FR984502D 1943-10-06 1943-10-06 Remote control and monitoring systems Expired FR984502A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR927883X 1943-10-06
FR984502T 1943-10-06

Publications (1)

Publication Number Publication Date
FR984502A true FR984502A (en) 1951-07-06

Family

ID=66522889

Family Applications (1)

Application Number Title Priority Date Filing Date
FR984502D Expired FR984502A (en) 1943-10-06 1943-10-06 Remote control and monitoring systems

Country Status (2)

Country Link
DE (1) DE927883C (en)
FR (1) FR984502A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1073073B (en) * 1960-01-14 Standard Elektrik Lorenz Aktien gesellschaft, Stuttgart-Zuffenhausen Circuit arrangement for remote control systems for the transmission of grain mandos with a control station and several receiving stations
GB919172A (en) * 1959-04-23
DE1147148B (en) * 1961-02-24 1963-04-11 Telefunken Patent Call receiver that responds to two frequency signals sent out in a specific time sequence
DE1175125B (en) * 1961-03-21 1964-07-30 Telefonbau Arrangement for the transmission of different messages over connection paths running between several sending and one receiving station

Also Published As

Publication number Publication date
DE927883C (en) 1955-05-20

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