The Realization Of Laser Distance-measuring Equipment On Embedded System

In the first chapter of this paper, the theory of laser phase distance-measuring technology is introduced. By using DSP and FFT operation, phase can be obtained. The proposed system can work under hostile conditions such as high temperature. Various technical measures are adopted to minimize the interference from the environment and the requirement of components' performance is decreased while not significantly increase the system complexity.In this thesis, the hardware frame and the methods to calculating the power parameters are discussed. With regard to the hardware design, we use the C8051F320 to be the main controller, and TMS320VC5502 to control the AD which samples the signal. The communication part of this system provides the interface to the user, and it can receive the upper's commands and transmit the information. With regard to the software design, we use the Fast Fourier Transform Algorithm to analyse the spectrum of the signal; also we analyse the method of calculating the distance. The combination of the two ruler is also discussed in detail.The feasibility of the laser ranging scheme is proved in the paper. The system has good performance and the influence from environment is little. It can be used to measure distance under hostile conditions.Finally, the possibility and the feasibility of application of some new advanced technologies are discussed.