A centering rod that can be used at night and its use method

Abstract

The invention discloses a night centering pole, and relates to the technical field of surveying and mapping devices. The night centering pole comprises a prism kit which comprises a station board anda prism head, wherein a first visible light path is arranged on the station board. The night centering pole comprises a connector connected with the lower end of the prism kit. A second visible lightpath is arranged in the connector. The second visible light path is communicated with the first visible light path. The night centering pole comprises a centering component which comprises a core tube. A third visible light path is arranged in the core tube. One end of the third visible light path is fixedly connected with the second visible light path, and the other end is connected with a laseremitter. The night centering pole comprises a counter weight. The top of the counter weight is connected with the laser emitter. A cylindrical touch switch which is used for controlling the emission and closing of the laser emitter is arranged at the joint of the counter weight and the laser emitter. According to the night centering pole provided by the invention, when the centering pole is vertical, a vertical light path and a horizontal light path passing through the center of the prism head are formed, and the horizontal and vertical center of the prism head is found; and when the centeringpole is tilted, the light paths are interrupted to avoid erroneous measurement when the centering pole is tilted.

Description

technical field [0001] The invention relates to the technical field of surveying and mapping equipment, in particular to a centering rod that can be used at night and a using method thereof. Background technique [0002] With the development of society, people's requirements for measurement accuracy continue to increase, and underground measurement has become common. At present, ordinary centering rods are mainly designed for visible light conditions during the day, and the measurement target can only be seen under visible light conditions. However, due to the influence of sunlight and other factors during the day, the atmospheric refraction is very unstable, requiring some measurement work to be carried out at night. In addition, with the development of the economy, the measurement in some underground and poorly lit spaces is increasing day by day. [0003] Although artificial light sources can be used to achieve measurable purposes at night or in confined spaces, the manu...

AI Technical Summary

Problems solved by technology

At present, ordinary centering rods are mainly designed for visible light conditions during the day, and the measurement target can only be seen under visible light conditions. However, due to the influence of sunlight and other factors during the day, the atmospheric refraction is very unstable, requiring some measurement work to be carried out at night. In addition, with the development of the economy, the measurement in some underground and poorly lit spaces is increasing day by day.

[0003] Although artificial light sources can be used to achieve measurable purposes at night or in confined spaces, the manufacturing process of artificial light sources is complicated and costly, remote areas do not even have the conditions for large-scale use of artificial light sources, and artificial light sources are difficult to achieve visible light during the day conditions, resulting in low measurement efficiency

At night, due to insufficient brightness of artificial light sources, and most of them are point-like divisions, the reflection intensity is uneven, causing the human eye to observe objects with different light intensities back and forth, resulting in visual fatigue and affecting measurement accuracy. The air bubbles in the centering rod often cause the centering rod air bubble to deviate due to carelessness of the pole supporter, which in turn causes the centering rod to tilt, which eventually leads to measurement errors

Images