基于嵌入式系統(tǒng)的激光位移檢測技術研究
[Abstract]:Because of its high accuracy, high speed, non-contact and so on, laser displacement detection technology is an important science in photoelectric detection. At present, optoelectronic detection equipments at home and abroad are developing towards miniaturization, intelligentization, faster operation speed and higher measurement precision, which presents a new challenge for the hardware platform of measurement technology. With the development of electronic technology, embedded systems have entered the sight of people. These devices are not as large as general purpose computers, they are very small, and they are not inferior to common purpose computers in computing. At the same time, it has excellent man-machine interaction function, and it has become a new trend of the development of the current electronic industry. This paper is based on this background to study the laser displacement detection technology in embedded systems. In this paper, the S3C2440A processor with ARM9 core is used as the core of the hardware platform to be developed. On this basis, other hardware peripherals are added, and the embedded Linux system is used to manage the whole device. The nonlinear error of the position sensitive device (Position Sensitive Detector,PSD,PSD), which is often used in the laser displacement detection system, has been hindering the overall accuracy of the detection system. In this paper, in addition to using the hardware circuit to reduce the error of the PSD, In the embedded system, the PSD nonlinear correction algorithm is used to correct the data, and finally the V measurement result is obtained, which greatly improves the accuracy of the whole laser displacement detection. In this paper, the laser displacement detection technology is analyzed in detail from the bottom hardware design, transplantation, to the development of the upper software system.
【學位授予單位】:長春理工大學
【學位級別】:碩士
【學位授予年份】:2012
【分類號】:TP368.1;TN247
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