助航闪光灯光强检测系统研究  

Study of Intensity Detection System for Aviation Lighting Flashing Lights

作　　者：侯启真[1] 史秉鑫[1] 李琪[1] 

机构地区：[1]中国民航大学航空自动化学院,天津300300

出　　处：《科学技术与工程》2014年第24期234-238,共5页Science Technology and Engineering

基　　金：中央高校基本科研业务费(3122013SY40);中央高校基本科研业务专项资助项目(3122013P008);2014年民航安全能力建设资金(20600223)资助

摘　　要：针对民航内缺少对助航闪光灯光强检测的现状,提出了一种检测助航闪光灯的方法。系统选用PIN光电探测器获取助航灯具的光信号,并利用前置放大器、AD1672芯片和USB接口电路等完成信号的放大、A/D转换及传输,最后通过计算机对数据处理。重点论述了助航闪光灯检测原理和测量规定,提出一种改进的算法用来确定闪光灯的持续时间,给出了系统的结构设计和部分电路原理说明,通过MATLAB软件中的复化梯形求积公式计算出光轴水平±15°和垂直+15°上的光强有效值,并在光轴方向绘制出发光曲线图。系统对实验室中的顺序闪光灯进行了测试,通过与灯具的规定说明比较,满足其发光特性要求,验证了系统的可行性。Considering the status of lacking intensity detection system for aviation lighting flashing lights in civil aviation,a new method of testing aviation ground lighting flashing lights was proposed.The system using PIN photodetector to obtain signal,using preamplifier,AD1672 chip and USB interface circuit to complete signal amplification,such as A/D converter and transmission.Finally,computer processed the data through software.Discussesing detection principle and measurement provision of aviation lighting flashing lights,it proposed a quadratic calibration method using to determine the duration time of the lights.Structural design and parts of circuit description were given in system.Calculating the optical axis on the horizontal and vertical light intensity of the valid values through compound trapezoid by MATLAB software,simultaneously,the system glowed drawn graph in the optical axis.Testing sequence flashing lights in the lab,the system is feasible and meeting requirements of luminescent properties.

关 键 词：助航灯 闪光灯 光强检测 数值积分算法 

分 类 号：TM923.57[电气工程—电力电子与电力传动] V242.6[航空宇航科学与技术—飞行器设计]