Distance-Measuring Technology Using LD for Auto Anti-Collision

• Published in: Wuhan University journal of natural sciences Vol. 9; no. 1; pp. 83 - 88
• Main Authors: Zhang, X.-B., Lu, H., Li, Z.
• Format: Journal Article
• Language: English
• Published: Heidelberg Springer Nature B.V 2004; School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China%School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China
• Subjects: Collision avoidance; Distance measurement; Lasers; Semiconductor lasers; Theoretical analysis; 滤波器; 激光器二极管; 移动通信; 自动反冲突技术; 距离测量技术; filter techniques; phase laser distance ranging; laser diode; auto anti-collision
• ISSN: 1007-1202; 1993-4998
• DOI: 10.1007/bf02912724

Auto anti-collision technology is one of the main research subjects of automobiles' safety technology. Aiming at the key technology of Auto anti-collision, measuring the distance from obstacles, based on the theory of phase laser distance ranging, Laser Diode (LD) distance-measuring system for auto anti-collision has been developed to solve the problem of on-line measuring distance technology in middle to long distance utilizing the good characteristics of LD when modulating its optical intensity and adopting typical kinds of filter techniques in this paper. By theoretical analysis, adopting typical kinds of filter techniques can reduce the interference of strong light, so distance-measuring range can be 0. 5-100 m in daytime or 1-200 m at night. And more, from theoretical analysis and experiment result, it can guarantee the high measuring resolution which can be less than 24. 5 mmutilizing the method of two Laser Diode optical intensity modulating wavelength and complimenting precise calibration and revision. The idea of LD distance-measuring technology is novel and feasible and this technology can be applied in Auto anti-collision.