POSITION MEASURING SYSTEM OF WORKING MACHINE

摘要

A position measuring system of a construction machine having a high working efficiency in which the position of a monitor point can be measured accurately even when the accuracy of measurement of a vehicle-mounted GPS is varied. A panel computer (45) operates the position of the monitor point set on the working machine in the three-dimensional space based on values measured by means of GPS receivers (43, 44) and angle sensors (21, 22, 23). When the accuracy of measurement of at least one of at least two GPS receivers lowers, the panel computer (45) corrects the operation of the position of the monitor point based on a yaw angle measured by a gyro (25) for measuring the yaw angle of the body of the vehicle.