摘要
针对天幕靶室外使用时受天空自然光亮度变化和系统噪声的影响,设计了一种基于嵌入式的天幕靶自适应控制系统。根据天幕靶光学系统原理和信号处理电路设计,建立系统信号幅值和噪声的数学模型,通过嵌入式控制,实现程控运算放大器和程控低通滤波器,使天空自然光亮度和电压增益呈线性关系,系统噪声处于滞回比较器回差电压范围内,有效实现了天幕靶的触发自适应控制。经试验测试验证,天幕靶系统信号幅值输出稳定,噪声水平得到有效控制,解决了天空自然光亮度和系统噪声对天幕靶触发稳定性的影响。
Aiming at the influence of sky natural light brightness changes and system noise when the sky screen is used outdoors,an embedded sky screen adaptive control system is designed.According to the principle of the sky screen target optical system and the design of the signal processing circuit,the mathematical model of the signal amplitude and noise of the system is established.Through embedded control,the program-controlled operational amplifier and the program-controlled low-pass filter are realized to make the sky natural light brightness and the voltage gain have a linear relationship.The system noise is within the hysteresis comparator hysteresis voltage range,which effectively realizes the trigger adaptive control of the sky screen target.The experimental test verifies that the signal amplitude output of the sky screen target system is stable,and the noise level is effectively controlled,which solves the influence of the sky natural light brightness and system noise on the trigger stability of the sky screen target.
作者
赵亚孟
江剑
Zhao Yameng;Jiang Jian(School of Mechanical Engineering,Nanjing Univeraity of Science and Technology,Nanjing 210094.China)
出处
《国外电子测量技术》
北大核心
2022年第7期113-118,共6页
Foreign Electronic Measurement Technology
关键词
天幕靶
自适应
嵌入式
信号处理
sky screen target
adaptive
embedded
signal processing
