A Design Method of Optical Path Parameter Topology Structure of Micropulse LiDAR
A technology of optical path parameters and laser radar, which is applied in the direction of design optimization/simulation, mechanical equipment, CAD numerical modeling, etc., can solve the problems of large space occupied by the overall structure of the optical path, insufficient rigidity, lack of stability, etc., to achieve quality reduction, The effect of improving structural strength and improving stability
Active Publication Date: 2022-07-22
SHANDONG UNIV OF SCI & TECH
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[0005] The present invention proposes a method for designing the topological structure of micro-pulse laser radar optical path parameters, which solves the problem that in the prior art, the mass of each optical device of the laser radar optical path connected to the whole is relatively large, the overall structure of the optical path takes up a large space, the structure is not compact, and Insufficient rigidity, lack of stability, etc.
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[0048] The specific embodiments of the present invention will be further described below in conjunction with specific embodiments:
[0049] A method for designing a micro-pulse lidar optical path parameter topology structure, comprising:
[0050] S1. Establish a topology model of all optical path parameters;
[0051] S2, perform topology optimization, and define the design domain, design load, constraints and boundary conditions of both the laser transmitter module and the optical receiver module;
[0052] S3. Solve the mass characteristics, element stiffness matrix and node displacement of discrete finite element elements based on the SIMP model;
[0053] S4. Solve the full structure function and sensitivity of the optical path, and update the optical path design variables based on the SQP optimization algorithm;
[0054] S5. Judging the convergence conditions, if the result is otherwise, return to S2. If the result is yes, the optimal mass distribution result is obtained, ...
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The invention discloses a method for designing a micro-pulse laser radar optical path parameter topology structure, which belongs to the technical field of pulse measurement and is used for the design of an optical path parameter topology structure, including establishing a full optical path parameter topology model; Loads, constraints and boundary conditions; based on the SIMP model to solve the mass characteristics, element stiffness matrix and node displacement of discrete finite element elements; solve the full structure function and sensitivity of the optical path; judge the convergence conditions and establish a continuous optical path structure topology optimization model; Through CFD numerical simulation, the working load under the operating state is obtained as the optimization condition of topology optimization, and the optical path structure reconstruction model is established according to the mass distribution of the topology optimization results; The result of heavier and increased stiffness. The present invention obtains mass distribution results with complete force transmission path and clear structure through topology optimization.
Description
technical field [0001] The invention discloses a design method of a micro-pulse laser radar optical path parameter topology structure, which belongs to the technical field of pulse measurement. Background technique [0002] The design of the optical path is a key factor in the measurement quality of the micropulse lidar, which directly affects the attenuation of the echo signal in the process of transmission or reflection. Aerosol refers to a heterogeneous system composed of solid and liquid particles suspended in a gas and a gas carrier. At the same time, these particles have physical and chemical characteristics independent of air, and these characteristics are exactly what we need to pay attention to and study. Micropulse lidar can use the scattering and absorption of aerosol particles to laser light, measure the backscattering of aerosol, and invert the distribution of atmospheric aerosol extinction coefficient with height, so as to obtain the distribution of aerosol in...
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IPC IPC(8): G06F30/23G06F30/17G06F111/10
CPCG06F30/23G06F30/17G06F2111/10Y02T10/40
Inventor 杜立彬柳泽政刘杰陈万前
Owner SHANDONG UNIV OF SCI & TECH