| 一种小型高精度脉冲式半导体激光测距仪 |
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| 引用本文： | 余向东,张在宣,王剑锋.一种小型高精度脉冲式半导体激光测距仪[J].激光与红外,2008,38(5):458-461. |
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| 作者姓名： | 余向东 张在宣 王剑锋 |
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| 作者单位： | 中国计量学院光学与电子科技分院光学工程学科,浙江,杭州,310018 |
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| 摘 要： | 介绍了一种小型、低成本的脉冲式半导体激光测距仪,该测距仪采用了定比例鉴别(CFD)和时间放大技术,有效地减少了因接收信号辐度变化而引起的漂移误差和晶振时钟计时的误差.当接收脉冲信号辐度在0.2-2.2V范围内变化时,该测距仪可获优于±7cm的单次测量精度.
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| 关 键 词： | 激光测距仪 定比例鉴别 时间放大 |
| 文章编号： | 1001-5078(2008)05-0458-04 |
| 修稿时间： | 2007年10月23 |
A Mini, High Precision Pulsed Semiconductor Laser Range Finder |
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| YU Xiang-dong,ZHANG Zai-xuan,Wang Jian-fang.A Mini, High Precision Pulsed Semiconductor Laser Range Finder[J].Laser & Infrared,2008,38(5):458-461. |
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| Authors: | YU Xiang-dong ZHANG Zai-xuan Wang Jian-fang |
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| Affiliation: | Department of Optical Engineering, College of Opto-electronics, China Jiliang University, Hangzhou 310018,China |
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| Abstract: | A mini, low-cost, pulsed semiconductor laser range finder is introduced in this paper. In this range finder, a constant fraction discriminator (CFD) and a time amplifier are used to reduce effectively the work error because of the changes of signal amplitude and the count error of crystal clock. It achieves a single-shot precision of better than ±7cm when the signal amplitude of the CFD in the range of 0.2~2.2V. |
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| Keywords: | range finder CFD time amplifier |
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