| 摘要 |
PURPOSE:To measure the passing position and attitude angle of a car at a calibration point on real-time basis in the car by adding simple marks on a running surface of the car and providing the car with a simple detecting means. CONSTITUTION:At a calibration point on a running surface of a car, a calibration point mark 3 is provided on the road surface 1 between edge bricks. This calibration point mark 3 consists of a rectangular mark 4 at right angles to the bricks 2, a trapezoidal mark 5 which is parallel to said rectangular mark 4, but not constant in width, and a parallelogram mark 6 arranged in parallel to the slanting side of said trapezoidal mark. Then, a mark detecting means provided on the car measures the time when the car passes through the parallel straight- line part and unparallel straight-line part, and the passing position and attitude angle of the car at the calibration point are measured on the basis of said time and mark size. |
