The Study of Deformation Monitoring Based on the Ground Three-Dimensional Laser Scanning Technology

Liang, Bin; Yue, Chong; Chen, Xu Hui; Wang, Bing; Sun, Xing Kai

doi:10.4028/www.scientific.net/amr.1022.387

Cited by 6 publications

(3 citation statements)

References 2 publications

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“…The lower the speed, the higher the torque. Figure 7 shows the surface measurement application of three-dimensional laser scanning technology [6][7][8][9][10]. The coordinates of the keyway of the rotor core are obtained by 3D laser scanning technology, the top corner position is set as the coordinate origin, the plane information of the rotor core is obtained by plane scanning and transformed into coordinates, and the robot finally realises the coincidence with the coordinate origin by rotation and translation.…”

Section: Fixture Designmentioning

confidence: 99%

Heavy duty diesel engine main rotor and mandrel coaxial quick alignment device design

Zhang

Liang

Huang

et al. 2023

Third International Conference on Mechanical Design and Simulation (MDS 2023)

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At present, the traditional heavy-duty diesel engine main rotor and core shaft docking process solution has low precision, backwards supporting equipment, poor stability and other problems. In this paper, several solutions are proposed to address these problems, and two new designs are finally identified. Option A is to improve the accuracy of the main rotor-core shaft alignment by changing the placement of the rotor and core shaft, using telescopic hydraulic cylinders and adopting fixtures to fix them; Option B uses 3D laser scanning technology, high-precision truss manipulators and "trap" type structural fixtures to solve the problem of inaccurate alignment between the keyway in the rotor cavity and the core shaft key and the inaccurate alignment between the rotor and the core shaft key. We also used 3D modelling and animation to solve the problems of the rotor core and core shaft shaking when the platform moves. We also simulated the working process of the two solutions through 3D modelling and animation. After comparison and analysis, both solutions can effectively achieve the automatic alignment of the rotor core and the core shaft key, ensure the coaxially of the rotor and the core shaft, and reduce the offset.

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Section: Fixture Designmentioning

confidence: 99%

Heavy duty diesel engine main rotor and mandrel coaxial quick alignment device design

Zhang

Liang

Huang

et al. 2023

Third International Conference on Mechanical Design and Simulation (MDS 2023)

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“…The changeover from systems of mining with massive caving to systems with an open stope space will reduce the displacement zone of the earth's surface, but will not stop its development as a result of the formed disturbances [19 -21], the characteristics of ecological and economic losses from the influence of underground mining of minerals are presented, as well as the issues of reconstructing the structures in the areas of mining operations are considered. For today, most scientific works are aimed not only at increasing the efficiency of mining raw materials from the subsoil, but also to implement the methods of mineral deposits mining that minimize the harmful effects of underground mining on the environment, on the day surface state, where not only enterprises are located, but also objects of settlements [22,23], as in the case with the objects of the name named after Horkoho village in Kryvyi Rih.…”

Section: Introductionmentioning

confidence: 99%

Research into harmful effect of underground mining operations on the state of buildings and structures located in the displacement area

Dolgikh

Kuchnerov

2020

E3S Web Conf.

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An urgent task of both the mine surveyor service and the entire mining sector is to develop and implement in production the remote digital methods for monitoring the deformations of buildings and structures, which are located in areas influenced by underground mining operations. When developing a new methodology for determining the buildings and structures deformations, special attention is paid to improving the photogrammetric method. The study is aimed at determining the optimal conditions for digital imaging of buildings and structures in order to obtain the deformation values with the required accuracy. Based on the results of experimental work on the simultaneous different-scale images processing, the accuracy of determining the planimetric coordinates and heights of the studied points is much higher compared to the previously used methodology, in which digital models of an object are plotted from images obtained by a single camera lens, that is, with the same metric characteristics. The use of high degree of detail and fragmentation of large-scale images, as well as a significantly smaller number of small-scale images, covering the surveyed object, improve the accuracy of determining the position of points, which in turn affects the reduction of the error in combining the models.

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“…The emergence of three-dimensional laser scanner has brought high efficiency and high precision to structural monitoring. In addition, three-dimensional laser scanning technology can also provide three-dimensional point data of structural surface, thus establishing high-precision three-dimensional structural model (González-Aguilera et al, 2008; Liang et al, 2014). However, owing to the high cost of the current three-dimensional laser scanner, it is generally only suitable for monitoring and modeling of large engineering structures such as mining areas, but not economical for monitoring small structures.…”

Section: Introductionmentioning

confidence: 99%

Displacement monitoring method based on laser projection to eliminate the effect of rotation angle

Liu

Zhang

et al. 2019

Advances in Structural Engineering

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Currently, laser technology has become increasingly mature. Semiconductor lasers have the characteristics of small size, long indication distance, long life, and low cost. Therefore, many studies regard them as the launching devices of monitoring system and fix them at the monitoring points of structures to reflect the displacements of the monitoring points through the spots produced by them. However, this method also exhibits a drawback, that is, this method can only be applied to the case where only displacement is generated at the monitoring point and no rotation angle is generated. If the rotation occurs at the monitoring point, the spot displacement is caused by the coupling effect of the displacement and rotation angle at the monitoring point, which will affect the monitoring results significantly. In this article, a method is proposed to decouple the effect of the displacement and angle and eliminate the influence of the angle sufficiently, by projecting the laser spots onto two screens. This method can significantly improve the application scope of the monitoring system and provide the possibility for its application in practical engineering.

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The Study of Deformation Monitoring Based on the Ground Three-Dimensional Laser Scanning Technology

Cited by 6 publications

References 2 publications

Heavy duty diesel engine main rotor and mandrel coaxial quick alignment device design

Heavy duty diesel engine main rotor and mandrel coaxial quick alignment device design

Research into harmful effect of underground mining operations on the state of buildings and structures located in the displacement area

Displacement monitoring method based on laser projection to eliminate the effect of rotation angle

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