摘要
应用光电探测技术,设计了门、窗入侵监测系统。其发射源采用调制的连续激光束,接收部分设计了窄带滤波放大,微弱信号探测电路,并采用同步检测方法,减小噪声,提高系统抗干扰能力。电路利用FPGA在时序上的时序控制优势进行设计,系统具有体积小,隐蔽性好等特点。
The photoelectric detection technology is applied and the invade monitor system is invented target on the windows and doors .The emitter adopts the modulated continuous laser signal. The receiver adopts the narrow band filter and magnify circuit , the photoelectric measure circuit is designed to achieve the detection of the weak signal. The time synchronized detect is provided to reduce the noise and enhance the anti-interference capability, The circuit take advantage of the predominant design of the FPGA on the time frequency .The system is characterized with small volume and hidden.
出处
《长春理工大学学报（自然科学版）》
2009年第2期239-241,共3页
Journal of Changchun University of Science and Technology(Natural Science Edition)
关键词
光电检测
噪声
FPGA
时同步
photoelectric detection
noise
FPGA
time synchronize
