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
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)
- Train Traffic Observation, Control, And Security (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (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.
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)
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)
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 |
-
1968
- 1968-11-02 DE DE19681806511 patent/DE1806511A1/en active Pending
-
1969
- 1969-10-01 GB GB1234352D patent/GB1234352A/en not_active Expired
Cited By (1)
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 |