摘要
以大功率LED光源的稳光强输出为目标,构建了高精度能见度仪发射系统,实现大功率光源的稳定输出。光功率控制电路以光源的一束散射光为反馈信号,采用集成电路和高精度器件构建调理与控制电路实现电流的动态调节;恒温控制电路采取并行电路扩展,实现对光源器件和关键电路器件的温度监测与控制。实验结果表明该系统工作稳定,发射器输出光强的相对误差接近1‰。
Stable lighintensity outpuof high-poweLED lighsource athe goal, kind of high-precision visi- bility metetransmittesystem ibuilto achieve the stability of the outpuof the high-powelighsource. bunch of scattered lighithe feedback signal of optical powecontrol circuit. Integrated circuitand high-precision de- viceare used to compose the conditioning and controlling circuito achieve the dynamiadjustmenof the current. The thermostaticontrol circuitakeparallel connection, monitorand controlthe temperature of the lighsource device and key circuidevices. The experimental resultshow thathe system istable, relative erroof transmitteoutpuintensity iclose to 1%o.
出处
《科学技术与工程》
北大核心
2013年第33期9950-9953,共4页
Science Technology and Engineering
基金
江苏省科技支撑计划(BE2010733)资助
关键词
稳光强
散射光
电流源
恒温控制
stable light intensity scattered light current source thermostatic control
