Patent ID: 6209232
Filing Date: 2001-04-03
Classification: E02F

Abstract:
A method for measuring the finishing accuracy of a floor face which is smoothed by a construction machine, said construction machine including a machine body and a working apparatus mounted on the machine body and including a plurality of arm members pivotally connected end to end for performing a desired working operation, an end working member pivotally connected to a distal-end arm member, and driving apparatus for driving the arm members and the end working member,said method comprising:(a) detecting angles of the arm members and the end working member with respect to the machine body, and detecting an angle of the machine body with respect to a reference plane or line;(b) calculating an angle of one of the arm members, which pivotally supports the end working member, with respect to the reference plane or line based on information of the angles detected in said step (a):(c) controlling the posture of each of the arm members in such a manner that the angle of the individual arm member, which has been calculated in said step (b), is maintained at a predetermined angle, and bringing the lower end of the end working member into a contact with the floor face smoothed by the construction machine;(d) receiving, with the condition obtained in said step (c) being maintained, the laser beam irradiated from a laser apparatus disposed at a fixed position remote from the construction machine, by an array type laser receiver mounted on the distal-end arm member; and(e) determining a degree of the finishing accuracy of the smoothed floor face by comparing the height of the smoothed floor face with a predetermined target floor height based on information on where said laser beam has been received in said array type laser receiver.