JPS5540916A - Survey method - Google Patents

Abstract

PURPOSE: To execute man power saving and to increase the accuracy, by measuring the three dimension coordinate of present position automatically, comparing it with the three dimension coordinate at the constant point on design measured and stored, and automatically calculating the difference.

CONSTITUTION: The survey unit 3 placed on the point O calculates the three dimensional coordinate of the set point A on design from the reference point O designated with the design coordinate calculation set 9, and the level axis is automatically matched to the point A by receiving the instruction of the survey instruction unit 7 based on the value, the display plate 6 fitted on the point a is surveyed while the movement is made toward the both directions of horizontal and vertical directions for a given range by a given pitch l, and the level axis is matched to the center a and it is stopped. Simultaneously, the three dimensional coordinate of the point a to the point O is measured, and the result is transmitted to the measuring coordinate reception set 10. Since the design coordinates XA, YA, ZA to the point O are calculated with the set 9, by this and the value of the coordinates X_a, Y_a, Z_a, of the present position of the point a, the difference is calculated with the difference numeral calculation set 11 and they are displayed automatically as X_a, Y_a, Z_a.

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