Device for measuring eye position of driver through rearview mirror

Abstract

Abstract PURPOSE:To detect the eye position of a driver simply and inexpensively by constituting it with a rearview mirror capable of adjusting an angle around both horizontal and vertical axes, the angle detector and an operational means inputting its angle value. CONSTITUTION:A small mark 5 is installed in the central upper part of a cab rearview mirror 1, and since a position of this central point to a car body is immovable even if an angle of the mirror 1 is changed, this center point is taken to an origin 5 of coordinates on the car body, thereby measuring the eye position of a driver. Then, a straight line drawn to the rear straight horizontally from the origin 5 is set down to a Y-axis, while a straight line downed in the vertical lower part from the origin 5 is set down to a Z-axis, and a straight line orthogonal with both axes of Y, Z passing the origin 5 is set down to X-axis, and then a distance between the center of a driver's seat and the origin 5 is set to k. In this 3-dimensional coordinate system, each signal out of angle detectors 18, 19 around both horizontal and vertical axes of the mirror 1 is processed by an operational means 25, through which coordinates x, y and z at the center position of both eyes of the driver is found out.

Inventors

• 👤 Kentaro Shioda
• 👤 健太郎 潮田

Bibliographic Details