A method and system for measuring the distance and size of a target object

Abstract

The invention relates to a target object distance and size measuring method and measuring system. The measuring method comprises a laser system. The laser system comprises three laser emission points, each of the three laser emission points generates a laser beam, wherein two of the laser beams are vertically downward, and the third laser beam is obliquely downward, so that the third laser beam intersects with a vertical plane formed by the other two laser beams, and the three laser emission points are located on the same horizontal plane. According to the invention, each laser beam does not need to be focused to one point; therefore, the requirement for installation precision is low; only the two laser beams need to be guaranteed to be vertically downward, the third laser beam needs to be installed at a certain inclination angle, such that the height from the target object to the measuring equipment can be accurately calculated, the size of the target object can be visually estimated through a proportional scale function, and the use of the system is rapid and convenient.

Description

technical field [0001] The invention relates to the technical field of measurement, in particular to a method and system for measuring the distance and size of a target object. Background technique [0002] In marine operations, it is usually necessary to determine the size and distance to the target object, that is, the area, size and distance of the target object itself to the distance measuring equipment. Due to the complexity of the marine environment, it is usually impossible to intuitively obtain the distance and size of the target object by means of visual inspection and other methods. However, with the aid of equipment such as laser ruler measuring instruments, the equipment is not easy to carry, and in the process of use, it is necessary to strictly follow the measurement steps. measured out, such as figure 1 As shown in the figure, A, B, and C represent three laser points, AD, BD, and CD represent three laser beams, and α represents the irradiation angle of laser ...

AI Technical Summary

Problems solved by technology

Due to the complexity of the marine environment, it is usually impossible to intuitively obtain the distance and size of the target object by means of visual inspection and other methods. However, with the aid of equipment such as laser ruler measuring instruments, the equipment is not easy to carry, and in the process of use, it is necessary to strictly follow the measurement steps. measured out, such as figure 1 As shown in the figure, A, B, and C represent three laser points, AD, BD, and CD represent three laser beams, and α represents the irradiation angle of laser beam BD. This traditional three-point laser distance measurement must ensure that three A laser beam is focused to a point at a certain angle, and the size of the target object cannot be determined intuitively, which is inconvenient to operate and high in cost.

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