基于TDC-GP21的激光测距毕业论文 (修复的).doc

基于TDC-GP21的激光测距毕业论文(修复的)
山东工商学院
SHANDONG INSTITUTE OF BUSINESS AND TECHNOLOGY
毕业论文(设计)
GRADUATION THESIS (DESIGN)
基于TDC-GP21的激光测距
Laser ranging Based on TDC-GP21
杨海乾
YANG Hai-qian
2014年 5月
May 2014
I
指导教师对毕业论文(设计)的评语
Advisor’ments on Graduation Thesis (Design)
评语:
指导教师(签章)
Signature of Advisor
日期
Date
II
评阅人意见
评阅人签字: 年月日
III
答辩(评审)委员会意见
Appraisal of mission
答辩(评审)成绩
Mark of Defence
鉴定意见
Appraisal & Comments
主任(签章)
Signature of Dean 日期
Date
IV
山东工商学院2014届毕业论文
基于TDC-PG21的激光测距
【摘要】激光测距仪正朝着小型、低功耗和高精度方向发展,尝试研制一种高精度的便携式脉冲激光测距仪。针对脉冲式激光测距技术展开,重点研究短时间间隔的高精度测量这一关键技术。在对普通脉冲激光测距机的时间间隔测量方法分析后,提出了基于高精度时间间隔测量芯片TDC-GP21的便携式脉冲半导体激光测距仪系统方案。分析了TDC-GP21时间测量原理,设计了基于TDC-GP21的时间间隔测量单元,脉冲半导体激光器的驱动电源、光电探测器的驱动电路。针对有限距离的计数分辨率引
起的误差,结合传统提高时间分辨率的方法,并对这一技术进行研究、发展和创新,使得测距系统的时间测量精度得到了很好的保证及提高,降低了硬件成本,简化了控制电路。
【关键词】激光测距,时间间隔测量,TDC—GP21,测距精度
V
山东工商学院2014届毕业论文
Laser Ranging Based on TDC-GP21
[Abstract] The laser range finder is developing in small,low-power and high-precision portable laser range finder with high precision was researcher in this paper. We have studied the pulsed laser ranging technology, and the priority is the critical technology of the high-precision measurement in short intervals. In this paper,we have proposed the solutions of the portable diode laser rangefinder system based on the high-precision time interval measurement chip TDC-GP21, through a deep research of the principle of the pulsed laser rangefinder. studied the time measuring principle of the TDC-GP21, designed the time interval measurement unit that based on the TDC-GP21, designed the driven power of the pulse- semiconductor lasers and the driven circuit of the photoelectric detector. To solve the error caused by the count resolution in a limited distance, we bined traditional methods to improve the time resolution, and with the research, development and innovation of the technology, we have ensured and developed the time