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.
出处
《仪表技术与传感器》
CSCD
北大核心
2008年第2期78-79,共2页
Instrument Technique and Sensor
