摘要
针对传统的断线型报警器在果园防盗中布线繁琐,不易管理的问题,设计了基于热释电红外的果园防盗系统。选用了双元传感器D203S做人体探测,并经过EG4002对其信号放大滤波后通过固态继电器驱动报警装置报警。同时为防止小动物引起误报,采用了上下2片传感器输出信号逻辑与的方法。实验结果表明,探测器探测范围可达到10m,探测性能不受天气、时间与步行速度的影响,只对移动人体报警,对小动物不误报。
Complicated wiring and difficult managementare two problems existing in traditional orchard anti-theft systems. A new system is designed based on pyroelectric infrared technology to solve above problems. The Dual- cell sensor D203S is selected for human detection and EG4002 is to amplify and filter the signals. Then the outputs drive the alarm through a solid state relay. At the same time, the method of logic-and of output signals which come from upper and lower 2 sensors is used to prevent the false alarm caused by small animals. The experimental results show that the detecting range can reach to 10m, and the performance is not affected by weather, time and walking speed. There is no false alarm from small animals
出处
《传感器世界》
2014年第2期39-42,共4页
Sensor World
基金
现代测控技术教育部重点实验室资助项目(项目编号:2013YB05)
关键词
热释电
滤波
果园防盗
信号处理
pyroelectric
filtering
orchard anti-theft
signal processing
