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Research on Portable Pulse Laser Rangefinder

Author: WuYingMing
Tutor: XuJun
School: Xi'an University of Electronic Science and Technology
Course: Physical Electronics
Keywords: Portable Pulse laser range finder Launch circuit design Reception circuit design high-precision time measurement
CLC: TP274.5
Type: Master's thesis
Year: 2009
Downloads: 710
Quote: 8
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Abstract


Presently, the laser range finder is developing in small, low-power and high-precision direction. A portable laser range finder with high precision was researched in this paper. First of all, the principle of laser range finder was analyzed theoretically deeply, and some impact factors that should be considered in the design were pointed out.Then the solution of a pulsed laser ranging system was put forward, including the design of laser emitting circuit, the design of laser receiving circuit, the design of high-precision time measurement circuit and software implementation.The technology problem of driver with high current and narrow pulse was resolved in the emitting part,and two resolutions were presented: one was using a chip MIC4452,the other was using two pieces of transistor as switching circuits to realize the rapid charge and discharge for capacitors, which will be helpful for improving precision and controlling the driven-current. A complete solution was given in the receiving circuit design to solve the technical problems such as high-voltage bias circuit and the pre-amplifier design. In the part of high-precision time measurement circuit design, the PCB was designed and debugged. Data communication is achieved between MSP430 MCU and TDC-GP2 by software.

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CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Data processing, data processing system > Automatic detection system using a variety of new technologies
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