摘要
针对天幕靶在使用时必须有非常稳定的光源,为了实现天幕靶能够全天候测量以及在室内测量,设计采用LED作为天幕靶的人工光源;分析了LED的特性,提出用超高亮度平头发光二极管作为人工光源,通过器材设计半径为5m的扇形形状LED光源。采用恒压供电,经过试验,该光源满足天幕靶在阴天或室内光线比较暗时测速的要求,而且对天幕靶的灵敏度有大幅度的提高。
For the sky screen must have a very stable light source when being used, in order to achieve the target for all-weather sky measurements and indoor measurements, the article uses LED as artificial light source for sky screen. The characteristics of LED is analyzed, and makes the flat ultrahigh brightness LED as a artificial light, then designs a fan shape light sources with radius of 5m by the equipment. After testing, the light source can meet the requirement of speed measurement in the cloudy sky or a dark room when with the constant power supply, and the sensitivity of sky screen target can be greatly improved.
出处
《山西电子技术》
2011年第4期12-13,共2页
Shanxi Electronic Technology
关键词
天幕靶
人工光源
发光二极管
sky screen target
artificial light
light-emitting dioda
