Topography observation device based on mechanical fine tuning dual hosts

Abstract

The invention belongs to the technical field of water and soil conservation study devices, and relates to a dynamic observation device used for a slope topography evolution process. The two hosts emitparallel, equal-height and overlapping laser planes from different orientations, and the laser planes are projected onto the slope topography; an image collecting device shoots the slope topography which laser rays are projected onto at an angle perpendicular to the layer planes to form a video screenshot, the video screenshot is imported into a computer to form a three-dimensional stereogram, and then parameters such as the slope volume and the slope gradient are calculated. According to the device, by rotating rotary knobs of mechanical fine tuning devices in the topographic meter hosts, equal-interval parallel accurate adjustment of laser ray planes is achieved; according to the device, by observing a fixing bolt on a support and a worm handle rotary knob in a view screen box, moving and rotation of a camera used for image collection are controlled. The invention provides a novel topographic meter through which the spacing and the angle of a linear laser can be conveniently calibrated, and all the topographies including local deep grooves on an eroded slope can be accurately observed.

Description

technical field [0001] The invention belongs to the technical field of soil and water conservation research devices, and relates to a device for dynamic observation of slope landform evolution process. Background technique [0002] Due to the complexity of soil erosion phenomena, reliable methods are often sought to observe and analyze erosion landforms in order to obtain its occurrence mechanism. Looking at the observation methods of soil erosion at home and abroad, they can be summarized into two types: survey method after rain and dynamic observation method in rain. The post-rain survey method is a method of inferring the amount of water and soil loss by investigating the landform characteristics after rainfall. For example, Yang Jishan et al. Observation of Gravity Erosion in Suideqiaogou Small Watershed, Shaanxi Yang Jishan, Yao Wenyi, Wang Lingling. Research on Gravity Erosion Law and Mechanism of Loess Channel [J]. People Yellow River, 2014, 36:93-96. Recently, the ...

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Problems solved by technology

[0003] But still there is following shortcoming in above-mentioned geomorphic instrument: 1 if after the geomorphic instrument main frame of test site is moved, the position and the angle of the laser in-line instrument in the main frame may change, that is, the contour and parallel laser planes sent by the geomorphic instrument main frame will occur. large error

No matter from which angle the laser plane emitted by a single host of the geomorphology instrument enters the gully, it may be disconnected, making it impossible to fully observe the landform of the concave gully

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