GB1234352A - - Google Patents

Info

Publication number
GB1234352A
GB1234352A GB1234352DA GB1234352A GB 1234352 A GB1234352 A GB 1234352A GB 1234352D A GB1234352D A GB 1234352DA GB 1234352 A GB1234352 A GB 1234352A
Authority
GB
United Kingdom
Prior art keywords
signal
distance
modulation
vehicle
aerial
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
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 filed Critical
Publication of GB1234352A publication Critical patent/GB1234352A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/22—Platooning, i.e. convoy of communicating vehicles
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/16—Anti-collision systems
    • G08G1/166—Anti-collision systems for active traffic, e.g. moving vehicles, pedestrians, bikes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Train Traffic Observation, Control, And Security (AREA)

Abstract

1,234,352. Train control system. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 1 Oct., 1969 [2 Nov., 1968], No. 48174/69. Heading B7N. [Also in Divisions H3-H5] The distance between two vehicles 1, 2, e.g. trains, constrained to move along a predetermined path is determined and used for anti-collision purposes, by the front vehicle I inducing a C.W. signal in an open transmission line 3 laid alongside the path, successively modulating the signal at spaced points 4 along the line, picking off the modulated signal at the following vehicle 2, and determining the distance as proportioned to the depth of modulation on the signal. Each vehicle carries a transmitter 1a, 2a, a receiver 1b 2b and an aerial 1c 2c. Switches 1d and 2d normally couple transmitter 1a to aerial 1c and aerial 2c to receiver 2b, but can reverse the path. The modulation is carried out in discrete steps in transistors 4 using a modulation signal from generator 5. The receiver 2b is connected to demodulator means 8 to give a signal at the input to gate 7 proportional to the modulation and distance. A detector 6 ensures that gate 7 is only enabled when the overall signal strength is above a predetermined threshold. The distance output of gate 7 is caused to activate a brake system 11, via control means 10 when the distance has dropped to collision possibility dimensions. The stopping or slowing down of vehicle 1 is detected by means 12, detecting the rate of change of the degree of modulation, and rapid decrease of the distance causes rapid application of brakes. A vehicle wheel/road adhesion measuring means 14, may control the rate of braking to overcome dangers of skidding.
GB1234352D 1968-11-02 1969-10-01 Expired GB1234352A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681806511 DE1806511A1 (en) 1968-11-02 1968-11-02 System for automatic collision prevention between vehicles traveling in the same direction

Publications (1)

Publication Number Publication Date
GB1234352A true GB1234352A (en) 1971-06-03

Family

ID=5712118

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1234352D Expired GB1234352A (en) 1968-11-02 1969-10-01

Country Status (2)

Country Link
DE (1) DE1806511A1 (en)
GB (1) GB1234352A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2146864A (en) * 1983-09-14 1985-04-24 David James Reginald Martin Vehicle location system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19509696C2 (en) * 1995-03-08 2000-04-13 Siemens Ag Procedure for mutual contact between trains and facility for carrying out the procedure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2146864A (en) * 1983-09-14 1985-04-24 David James Reginald Martin Vehicle location system

Also Published As

Publication number Publication date
DE1806511A1 (en) 1970-05-21

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees