Distance-measuring technology using LD for auto anti-collision |
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Authors: | Email author" target="_blank">Zhang?Xin-baoEmail author Lu?Hong Li?Zhu |
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Institution: | (1) School of Mechanical Science and Engineering, Huazhong University of Science and Technology, 430074 Wuhan, Hubei, China;(2) School of Mechanical and Electronic Engineering, Wuhan University of Technology, 430070 Wuhan, Hubei, China |
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Abstract: | 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 mm, utilizing 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.
Foundation item: Supported by the National Natural Science Foundation of China (59675080, 59805006) and Wuhan Chenguang Foundation (20025001001)
Biography: Zhang Xin-bao (1965-), male, Associate professor, research direction: precise mechanism and instrument. |
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Keywords: | laser diode phase laser distance ranging filter techniques auto anti-collision |
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