Automotive anti-collision and alarm system

Details Automotive anti-collision and alarm system Automotive anti-collision and alarm system

1996-12-26

1998-10-06

Swarthout, Brent A.

Communications: electrical

External condition vehicle-mounted indicator or alarm

Transmitter in another vehicle

340904, 340435, 340436, 342 70, 180167, G08G 116, B60Q 100

Patent

active

058183558

ABSTRACT:
An estimated travelling curve La (radius Rea) of a system vehicle is obtained based on a first group of sampling data (X1, Y1) through (X5, Y5). Alarm area WA1a is set as a region surrounded by a pair of circular arcs parallel shifted from curve La by .+-.1 m and a pair of straight lines (Y=Y1 and Y=Y5). Similarly, an estimated travelling curve Lb (radius Reb) is obtained based on a second group of sampling data (X3, Y3) through (X5, Y5). Alarm area WA1b is set as a region surrounded by a pair of circular arcs parallel shifted from curve Lb by .+-.1 m and straight lines (Y=Y1 and Y=Y5). At the entrance and exit of a curved road, values of radii Rea and Reb are differentiated. Hence, the collision judgement is performed by using different alarm areas WA1a and WA1b.

REFERENCES:
patent: 4632543 (1986-12-01), Endo
patent: 5249157 (1993-09-01), Taylor
patent: 5315295 (1994-05-01), Fujii
patent: 5321407 (1994-06-01), Kikuchi et al.
patent: 5355118 (1994-10-01), Fukuhara
patent: 5461357 (1995-10-01), Yoshioka et al.
patent: 5530651 (1996-06-01), Uemura et al.
patent: 5631639 (1997-05-01), Hibino et al.

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