JPS62282219A - Method for measuring dimension of three-dimensional structure - Google Patents

Abstract

PURPOSE:To measure the dimension of a three-dimensional structure easily, accurately and rapidly, by converting coordinates so that the positional coordinates of respective three positions being measured at first and second arrangement positions coincide with each other. CONSTITUTION:The positional coordinates of three common measuring points 1a-1c and those of, for example, the measuring points 1g, 1h among the remaining measuring points are measured by the range finder-angle gauge 2 of a first arrangement position 3A. Subsequently, the range finder-angle gauge 2 is moved to a second arrangement position 3B and the positional coordinates of three common measuring points 1a-1c and measuring points 1d-1f are measured. Next, one of or both of the positional coordinates of the measuring points 1a-1c, 1g, 1h measured at the position 3B and those of the measuring points 1a-1f measured at the positions 3B are converted so that the positional coordinates of three common measuring points 1a-1c measured at a position A are coincide with those of the common measuring points 1a-1c measured at a position B. The dimension of a hull block 1 can be calculated accurately and easily using the positional coordinates of all measuring points 1a-1h.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a method for measuring the dimensions of a large three-dimensional structure such as a hull block.

[Prior art and its problems]

Dimensions of large three-dimensional structures such as ship hull blocks are generally measured using a tape measure with the aid of a prong or water mound.

However, it is difficult to directly and accurately determine the distance between two points in high space, the angle between three points, or the coordinates of the position of each point using a tape measure or the like. For this reason, we lowered the prong to the floor and copied the shape of the front and side surfaces of the three-dimensional structure,
By using triangulation method using two measuring instruments, etc., the solid a
Although measurements of the dimensions of three-dimensional structures have also been carried out, it has been difficult to accurately and quickly measure the dimensions of three-dimensional structures.

By the way, recently, the horizontal distance to the measurement point of a three-dimensional structure,
Vertical distance, slope distance, horizontal swing angle, vertical swing angle, etc.
- A rangefinder and goniometer that can quickly and accurately determine the coordinates of the position of a measurement point by directly and accurately determining c,=in using laser light and processing the measurement data with a microcomputer. is being developed. However, even if such a rangefinder and goniometer is used, if the rangefinder is installed in many locations and the coordinates of the measurement point are measured,
The process of converting the coordinates of all measurement points into coordinates based on one origin requires considerable trouble. Therefore, it is not always easy to accurately and quickly measure the dimensions of a three-dimensional structure.

[Purpose of the invention]

In view of the above-mentioned current situation, it is an object of the present invention to provide a dimension measuring method that allows the dimensions of a three-dimensional structure to be easily, precisely and quickly measured using a rangefinder and goniometer. be.

[Summary of the invention]

In the dimension measuring method of the present invention, distance measuring goniometers are installed one by one at first and second installation positions where the coordinates of three measurement points of a three-dimensional structure can be commonly measured. At a second installation position, the rangefinder and goniometer measure the coordinates of all measurement points of the three-dimensional structure, using the three measurement points as common measurement points, and One or both of the coordinates of the position of the measurement point measured at the first setting position and the coordinates of the position of the measurement point measured at the second installation position, The coordinates of one or both of the three measurement points measured at the second setting position are transformed so that the coordinates of the three measurement points measured at the second set position match. The present invention is characterized in that the dimensions of the three-dimensional structure are determined based on the coordinates of the positions of all measurement points.

[Structure of the invention]

Hereinafter, the dimension measuring method of the present invention will be explained in detail.

FIG. 1 is an explanatory diagram showing an embodiment of the dimension measuring method of the present invention.

In Figure 1, 1 is a hull block, 2 is a rangefinder, and
3 is the floor surface such as the foundation around the hull block 1, 3A,
3B are the first installation position and the second installation position on the floor surface 3 of the rangefinder goniometer 2, respectively. The first and second installation positions 3A and 3B are all measured points 1a+1b, lc, l on the hull block 1 by the rangefinder and angle meter 2 installed here.
Three measuring points of d, le, If, Ig and 1h, for example measuring point 1a.

This is the position where 1 b + lc can be measured as three common measurement points.

In this invention, the distance measurement angle measurement @2 is installed at the first installation position 3A, and the distance measurement angle measurement @2 is used to measure the three common measurement points 1a, lb, and lc, and the rest. For example, the coordinates of the positions of measurement points 1g and lh among the measurement points are measured. Next, the rangefinder goniometer 2 is moved to the second installation position 3B, and the rangefinder goniometer 2 is used to measure the three common measurement points 1a, lb, and 1c, and among the remaining measurement points. measurement point 1d.

Measure the coordinates of the positions le and If.

In this way, once the coordinates of the positions of the hull blocks 10 and 11 fixed points 1a to 1h have been measured using the three measurement points 1a to 1c as a common fixed point, the next step is to measure at the first installation position. Measurement points 1a, 1b+1c
One or both of the coordinates of the position +1g+1h and the coordinates of the measurement point 1allblIC11d11e+1f measured at the second setting position are determined by the measurement at the first setting position, and the three common measurement points] a to 1c positions The coordinates of and the second
Three common measurement points 1a-1 by measurement at set positions of
Coordinates are transformed so that the coordinates of the position c match.

Through such coordinate transformation, the coordinates of the positions of all measurement points 1a to 1h of the hull block 1 become coordinates based on one origin. Therefore, if the dimensions of the hull block 1 are determined using the coordinates of the positions of all the measurement points 1a to 1h, the dimensions can be determined precisely and easily.

Although the above example shows the case where three common measurement points (la to lc) are obtained among the arrival points 1a to lh of the hull block 10, depending on the conditions around the hull block 1, Three common points I during measurement points 1a-lh
In some cases, it may not be possible to move and install the range finder and goniometer 2 between two installation positions so as to obtain a fixed point. At this time, three points outside the hull block 1, such as three points set on the floor 3, or one or two points among the measurement points 1a to 1h of the hull block 1, and two points outside the hull block 1 are selected. Three points consisting of one or one point may be used as three common measurement points.

〔Effect of the invention〕

Since the present invention is configured as described above, the dimensions of a three-dimensional structure can be easily and accurately and quickly measured.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing one embodiment of the dimension measuring method of the present invention. In the drawings, 1...hull block,
18~1h...Measuring point, 2...Distance and goniometer,
3... Floor surface, 3A... First installation position, 3B
...Second installation position.

Claims (1)

[Claims] The distance measuring goniometer is sequentially moved and installed at first and second installation positions where the coordinates of the three measurement points of the three-dimensional structure can be commonly measured, and the measurement is performed at the first and second installation positions. Measure the coordinates of the positions of all measurement points of the three-dimensional structure using the three measurement points as a common measurement point using a rangefinder, and measure the coordinates of the positions of all measurement points of the three-dimensional structure, and the measurement taken at the first set position among all the measurement points. One or both of the coordinates of the position of the point and the coordinates of the measurement point measured at the second setting position are the coordinates of the position of the three measurement points measured at the first installation position and the coordinates of the measurement point measured at the second setting position. The coordinates are transformed so that the coordinates of the positions of the three measurement points measured at the set positions of A method for measuring the dimensions of a three-dimensional structure, characterized by determining the dimensions of the three-dimensional structure.