点光源跟踪系统的设计

江汉大学学报（自然科学版） ›› 2014, Vol. 42 ›› Issue (1): 49-54.

点光源跟踪系统的设计

谭翠兰

江汉大学物理与信息工程学院，湖北武汉 430056

出版日期:2014-02-25 发布日期:2014-04-14
作者简介:谭翠兰（1981—），女，实验师，硕士，研究方向：单片机及嵌入式系统。

Design of Point Light Source Tracking System

TAN Cui-lan

School of Physics and Information Engineering，Jianghan University，Wuhan 430056，Hubei，China

Online:2014-02-25 Published:2014-04-14

摘要/Abstract

摘要： 以TI公司的单片机MSP430F149 为核心，设计了一个点光源跟踪系统。该系统主要由白光LED驱动电路、光源检测、数据处理及跟踪控制4部分构成。单片机对光敏电阻检测到的光照强度进行处理，判断点光源的位置，跟踪算法通过PWM 方式控制X/Y 方向的两个步进电机转动，从而带动激光笔跟踪光源。实验结果表明，本系统能较好地跟踪光源并具有自适应性，在对太阳能的跟踪方面具有参考价值。

关键词: MSP430F149, 点光源跟踪, 光敏电阻, 步进电机

Abstract: Designs a point light source tracking system based on TI Company′s MCU MSP430F149. The system is composed of four parts：white LED driver circuit，light source detecting circuit，data processing and tracking control device. The MCU processes the data of light intensity which detected with photosensitive resistances device，and two stepper motors moving in X/Y direction with PWM method，so as to make the laser pen track the light source. Introduces the working principle of the system，gives the hardware design circuit and part of mechanical structure，and elaborates the key tracking algorithm. The experiment results show that this system can track the light source better and has self-adaptability；it has good reference value in the tracking of solar energy.

Key words: MSP430F149, point light source tracking, photosensitive resistance, stepper motor

中图分类号:

TP23

谭翠兰. 点光源跟踪系统的设计[J]. 江汉大学学报（自然科学版）, 2014, 42(1): 49-54.

TAN Cui-lan. Design of Point Light Source Tracking System[J]. Journal of Jianghan University(Natural Science Edition), 2014, 42(1): 49-54.