基于红外检测的高精度定时装置的研究  

Research on High Precision Timing Equipment Based on Infrared Detector

作　　者：夏春华[1] 邱选兵[2] 王小伟[2] 魏计林[2] 

机构地区：[1]山西行政学院信息网络教研部,山西太原030006 [2]太原科技大学物理系,山西太原030024

出　　处：《红外》2008年第9期18-21,32,共5页Infrared

基　　金：太原科技大学校青年基金(2007141)

摘　　要：本文介绍了基于红外对射管的高精度定时装置,给出了多路光电检测电路、PCA模块电路、CPU控制电路、数据通信电路以及键盘显示电路的设计。实测表明,该定时装置与传统的手持秒表等相比具有精度高、多通道测量以及带RS232、USB通信接口等优点,不仅满足了大学力学实验的测试要求,同时也为实际的自由落体运动和最速降线的理论研究及应用提供了准确的数据来源。In this paper, a high precision timing equipment based on infrared beam detectors is presented and the design of a multiple channel photoelectric cell circuit, a PCA circuit, a CPU control master circuit, a data communication circuit and a keyboard and display circuit is given. The practical test result shows that this timing equipment has the advantages of high precision, multiple cbANnnel measurement and additional RS232 and USB communication interfaces compared with the traditional manual stopwatch. It not only can meet the accuracy requirement of mechanics experiment at universities, but also can provide exact data sources for the theory study and application of brachistochrone and free falling.

关 键 词：红外检测 PCA 最速降线 C8051F340 

分 类 号：TP274.52[自动化与计算机技术—检测技术与自动化装置]