中圖分類號(hào)：TD679 文獻(xiàn)標(biāo)志碼：A DOI: 10.16157/j.issn.0258-7998.256599
中文引用格式： 李大威，李亞寧，張恩華，等. 基于雙軸激光掃描的煤倉(cāng)物位深度檢測(cè)系統(tǒng)[J]. 電子技術(shù)應(yīng)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

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.

Key words : dual axis laser scanning；coal bunker level；depth measurement；dynamic focusing