| 摘要 |
<p>A measuring block (10) moving on a road surface in longitudinal direction, comprising first, second, and third rollers (11, 12, 13) of disk shape and same outside diameter disposed thereon at specified intervals, a first connecting rod (14) installed on the rotating shafts of the first and second rollers and connected so as to allow the rollers to be rotated, a second connecting rod (15) of the same length as the first connecting rod installed on the rotating shafts of the second and third rollers and connected so as to allow the rollers to be rotated, a distance measuring equipment (16) installed on the rotating shaft of the first or second roller, and a rotary encoder (18) installed on the second connecting rod and detecting an angle formed by the first and second connecting rods, whereby the angle formed by the first and second connecting rods is detected by an angle detection means each time the measuring block moves through the lengths of the first and second connecting rods, and a longitudinal profile is prepared based on the detected values.</p> |
