高可靠性光电计数系统  

Photoelectric Counting System with High Reliability

作　　者：曹晓华[1] 杨印保 

机构地区：[1]河北理工大学计算机与自动控制学院,河北唐山063009 [2]哈尔滨啤酒(唐山)有限公司,河北唐山063000

出　　处：《仪表技术与传感器》2008年第2期78-79,共2页Instrument Technique and Sensor

摘　　要：介绍了一种体积小、可靠性极高的光电计数系统,具有光敏三极管的自动增益控制(AGC)特性,并带有稳频调制光以抗各种干扰,能驱动很多个发光二极管同时工作的大功率电路,检测电路的输出级带有放大和施密特迟滞特性,确保整机有极高的抗干扰能力。实验证明:由于该计数系统研制的光电检测电路应用了AGC电路,使输出信号具有更高的精度,使电路处于长期稳定运行状态,保证了整个计数系统的精度。An advanced and small photoelectric counting system was introduced,it had the advantage of automatic gain control（AGC）.The system has adjusted light with stable frequency and resists all kinds of disturbing.Many light diodes drive the large power circuit at the same time.So the circuit can work normally without being adjusted.The output has the characteristic of magnifying.The instrument has the capability of resisting all kinds of disturbing.The experiment shows that the output of the counting system has high accuracy,and the circuit works stably,so ensure the accuracy of the whole system.

关 键 词：光电传感器 自动增益控制 光敏三极管 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]