GB1310679A - Monitoring arrangements - Google Patents

Monitoring arrangements

Info

Publication number
GB1310679A
GB1310679A GB1310679DA GB1310679A GB 1310679 A GB1310679 A GB 1310679A GB 1310679D A GB1310679D A GB 1310679DA GB 1310679 A GB1310679 A GB 1310679A
Authority
GB
United Kingdom
Prior art keywords
data
signal
delay
car
cars
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
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Publication of GB1310679A publication Critical patent/GB1310679A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/123—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams
    • G08G1/127—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams to a central station ; Indicators in a central station
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

1310679 Radio frequency systems MARCONI CO Ltd 13 May 1970 [31 July 1969] 38416/69 Heading H4L A monitoring arrangement for data from a number of mobile vehicles sends a signal from a control transmitter to all the vehicles which each respond (after a delay) by transmitting data, the delay in each case being pre-set to one of a number of different values. The arrangement is described in connection with the interrogation of police cars by a coded control signal every 20 seconds, each car on receipt of this signal loading a different value into a counter which is then counted down by a crystalcontrolled clock so that the cars transmit data at 25 millisecond intervals. The data transmitted, which may relate to car position, fuel reserve &c., is digitally encoded and transmitted automatically.
GB1310679D 1969-07-31 1969-07-31 Monitoring arrangements Expired GB1310679A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3841669 1969-07-31

Publications (1)

Publication Number Publication Date
GB1310679A true GB1310679A (en) 1973-03-21

Family

ID=10403317

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1310679D Expired GB1310679A (en) 1969-07-31 1969-07-31 Monitoring arrangements

Country Status (1)

Country Link
GB (1) GB1310679A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2404233A1 (en) * 1977-09-21 1979-04-20 Siemens Ag PROCESS FOR THE TRANSMISSION OF DATA BETWEEN A CENTRAL AND SEVERAL SUBSTATIONS
FR2415406A1 (en) * 1978-01-18 1979-08-17 Compur Electronic Gmbh METHOD AND DEVICE FOR THE TRANSMISSION OF INFORMATION BETWEEN SEVERAL TRANSMITTERS AND A RECEIVER, IN PARTICULAR IN A PERSONAL PROTECTION INSTALLATION
EP0055688A1 (en) * 1980-12-23 1982-07-07 Siemens Aktiengesellschaft Signal transmission arrangement according to the time multiplex system
EP0069275A1 (en) * 1981-07-02 1983-01-12 Trancom AB Apparatus for communicating with a fleet of vehicles
GB2259227A (en) * 1991-08-30 1993-03-03 Marconi Gec Ltd Improvements in or relating to transponders
EP0562940A1 (en) * 1992-03-27 1993-09-29 Thomson-Csf Marine navigation control method
US6377203B1 (en) 2000-02-01 2002-04-23 3M Innovative Properties Company Collision arbitration method and apparatus for reading multiple radio frequency identification tags

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2404233A1 (en) * 1977-09-21 1979-04-20 Siemens Ag PROCESS FOR THE TRANSMISSION OF DATA BETWEEN A CENTRAL AND SEVERAL SUBSTATIONS
FR2415406A1 (en) * 1978-01-18 1979-08-17 Compur Electronic Gmbh METHOD AND DEVICE FOR THE TRANSMISSION OF INFORMATION BETWEEN SEVERAL TRANSMITTERS AND A RECEIVER, IN PARTICULAR IN A PERSONAL PROTECTION INSTALLATION
EP0055688A1 (en) * 1980-12-23 1982-07-07 Siemens Aktiengesellschaft Signal transmission arrangement according to the time multiplex system
EP0069275A1 (en) * 1981-07-02 1983-01-12 Trancom AB Apparatus for communicating with a fleet of vehicles
GB2259227A (en) * 1991-08-30 1993-03-03 Marconi Gec Ltd Improvements in or relating to transponders
GB2259227B (en) * 1991-08-30 1995-10-18 Marconi Gec Ltd Improvements in or relating to transponders
EP0562940A1 (en) * 1992-03-27 1993-09-29 Thomson-Csf Marine navigation control method
FR2689282A1 (en) * 1992-03-27 1993-10-01 Thomson Csf Method of controlling the maritime navigation.
US5404135A (en) * 1992-03-27 1995-04-04 Thomson-Csf Sea navigation control process
US6377203B1 (en) 2000-02-01 2002-04-23 3M Innovative Properties Company Collision arbitration method and apparatus for reading multiple radio frequency identification tags

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years