基于光学滤波器的角度传感器_.doc

编号 某校 毕业论文 题目：基于光学滤波的转速测量系统设计 学 院： 专 业： 电子信息科学与技术 学 号： 姓 名： 指导教师： 完成日期： 年 6 月 9 日 摘 要 该文主要描述基于光学滤波的转速测量传感器的设计原理和思路以及过程，同时也介绍了与其功能相似的可接触式的电磁传感器、霍尔传感器、微型发电机转速表，和非接触式的光电传感器。说明了电子与数字化传感器的原理和在应用时的优缺点，也描述选择了基于光学滤波器的转速测量的原由和优缺点。本课题是设计基于光学滤波的转速测量系统，光学滤波器是一种梳状的空间滤波器，可把随机的、不规则图像的运动转换为较为规则的准正弦信号输出，可用于不规则物体运动速度的非接触测量，适合于流体、旋转机械、车辆等的速度测试，也可用于军事目标的监测。在本设计中，光学滤波器将随机图像信号变换为准正弦信号后，对该信号进行整形、滤波等处理，并采集到计算机系统，用矩形波形和高频脉冲，经两组可编程计数器计数得到连续的时间间隔，用单片机连续采集数据并处理之，可得到转速值。本论文组要完成信号变换、数据采集和处理等电子线路的设计，再设计基于单片机的程序，并测试仿真。通过以上工作，在对角速度传感器未来的发展及其走向进行讨论，并从中了解传感器方向未来的走向。 关键词：光学空间滤波，角速度，高频脉冲插补，单片机，数据采集  Abstract This paper describes the design principles and ideas and processes of Optical filtering based speed measurement sensor ,and also introduced its functional similarity ,for example ,electromagnetic sensors, Hall sensors, micro-generator tachometer, And non-contact type photoelectric sensor. Illustrates the principle of electronic and digital sensor and the advantages and disadvantages in the application . , and also describes the advantages and disadvantages based speed measurement of the optical filter.and a reason of why Choose this This topic is designed optical filter based on the speed of the measurement system, The optical filter is a spatial filter comb, To the random movement of irregular image is converted to a more regular quasi-sinusoidal signal output, Non-contact measurement can be used to speed the movement of irregular objects, Suitable for fluid, rotating machinery, vehicles and other speed test, Can also be used to monitor military targets. In this design, The optical signal conversion filter will prevail after a random sinusoidal signal, The signal shaping, filtering, processing, And collected into a computer system with a rectangular waveform and high frequency pulse, The two programmable counter to obtain a continuous time interval, MCU con