Zigzag running warning system for automotive vehicles

Details Zigzag running warning system for automotive vehicles Zigzag running warning system for automotive vehicles

1982-09-15

1987-06-16

Caldwell, Sr., John W.

Communications: electrical

Selective

Having indication or alarm

33361, 324207, 324253, B60Q 100, G01C 1728

Patent

active

046739130

ABSTRACT:
In a zigzag running warning system for automotive vehicles which detects and gives a warning of zigzag running of a vehicle, a terrestrial magnetism sensor generates an electric signal having an amplitude varying in dependence on the direction of travel of the vehicle with respect to the direction of the terrestrial magnetism. An electronic unit in the system discriminates that vehicle is running in a zigzag direction when the amplitude of the electric signals changes in excess of a predetermined value at a period which is less than a predetermined time, and informs the driver of the zigzag running by a speaker, lamp or the like.

REFERENCES:
patent: 3959889 (1976-06-01), Thomas
patent: 4030204 (1977-06-01), Edwards
patent: 4104803 (1978-08-01), Hoeppel
patent: 4339713 (1982-07-01), Kago et al.
patent: 4379366 (1983-04-01), Kuno et al.

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