中图分类号：TD679 文献标志码：A DOI: 10.16157/j.issn.0258-7998.256599 中文引用格式： 李大威，李亚宁，张恩华，等. 基于双轴激光扫描的煤仓物位深度检测系统[J]. 电子技术应用，2025，51(12)：126-130. 英文引用格式： Li Dawei，Li Yaning，Zhang Enhua，et al. Coal bunker level depth detection system based on dual axis laser scanning[J]. Application of Electronic Technique，2025，51(12)：126-130.
Coal bunker level depth detection system based on dual axis laser scanning
Li Dawei1，Li Yaning2，Zhang Enhua1，Zhang Lijun2，Li Yashuai2
1.School of Electrical and Control Engineering， North University of China；2.Shanxi Dedicated Measurement Control Co.，Ltd.
Abstract： To accurately measure the depth information of coal bunker level and avoid the impact of high or low level on coal transportation process, a coal bunker level depth detection system based on dual axis laser scanning is proposed. The system adopts a dual axis galvanometer structure to achieve wide field scanning and complete laser ranging at any position on the object surface. We have built a synchronous optical path structure that conforms to the dual axis galvanometer and laser ranging, and designed a focusing module for beam shaping. In the dynamic focusing test, the variation of the light spot within the range of 2 m~5 m was tested, and the diameter of the light spot was all less than 0.5 mm, which meets the design requirements for focusing and illuminating the test object surface. In the depth experiment of the object surface, the height of the object surface was tested at distances of 2 m and 5 m, and the measured deflection angle was between 0°~ 20°. The experimental results show that under two testing conditions, the maximum error is 23 mm, and the error of the test results for the upper and lower limits of the material level is less than 0.5%. The dual axis laser scanning system has high accuracy, a large field of view, and the ability for online real-time testing, which has high practical value in the field of coal bunker level detection.
