Inter-vehicle distance detector

Abstract

Abstract PURPOSE:To keep an image-sensing area always in the direction of a front vehicle and to continuously detect the distance between two vehicles by a method wherein a change in the time of two images obtained by image-sensing the front vehicle is detected, a change in a relative direction up to the front vehicle is computed on the basis of the amount of the change and an image- sensing direction is changed. CONSTITUTION:A first image and a second image which have been obtained by image-sensing a front vehicle by a first image-sensing photodetector 14 and a second image-sensing photodetector 16 are stored in a storage circuit 5. Changes in terms of time of the first image and the second image are detected respectively by an information processing circuit 4, the defining range of the first image and the second image is changed on the basis of the changes in terms of time, and the distance up to the front vehicle is operated on the basis of the interrelation between the first image and the second image while an image-sensing direction is being adjusted.

Inventors

• 👤 Toshihiro Yamamura
• 👤 智弘 山村

Bibliographic Details