摘要
针对现行红外报警系统漏报、误报现象严重的问题,基于STM32单片机,设计了一款具有双光路结构的主动式红外报警系统。以STM32F103单片机为主控芯片,结合程序优化,系统可分辨用户行为与入侵行为,并提升入侵行为检测能力;结合SIM800A无线通信模块,实现对入侵行为的现场和远程实时联动报警;创新设计信号检测模块结构,可缩减成本并提高单位长度检测值。建立了倾斜角与单位长度检测值的数学模型,便于系统安装。试验表明:系统有效地将漏报率降至0. 2%,误报率降至0. 1%以下,尤其可以避免由用户行为、杂物以及环境温度变化所引起的误报。主动式双光路红外报警系统的优化设计在提高系统可靠性的同时,缩减了成本,适用于一般的家用安保及需控制人群流向的场合。
To solve the serious problems of missing alarm and false alarm in current infrared alarm systems,an active infrared alarm system with dual optical paths structure based on STM32 microcontroller has been designed.With STM32F103 as the main control core and combining optimized program,the system can distinguish users’behaviors from invaders’behaviors,and improve the capability of intrusion detection.Combined with SIM800A wireless communication module,the linkage alarm of on-site and real-time remote notification of invasions is achieved.The innovative design of the structure of signal detecting module reduces the cost and improves the detection value per unit length.A mathematical model of the inclination angle and the detection value per unit length is established for easy installation of the system.Experimental data show that the system effectively reduces missing alarm rate to 0.2%and false alarm rate to less than 0.1%,it can particularly avoid the false alarms caused by users’behaviors,debris and changes of ambient temperature.The optimized design of active dual-light infrared alarm system improves system reliability and reduces the cost;the system is applicable to the general home security purpose and the need to control the flow of the crowd occasion.
作者
赵越
张娟
吴晨
白瑞林
ZHAO Yue;ZHANG Juan;WU Chen(College of IOT Engineering,Jiangnan University,Wuxi 214122,China)
出处
《自动化仪表》
CAS
2018年第11期91-94,共4页
Process Automation Instrumentation
关键词
智能家居
主动式红外报警系统
无线通信
漏报率
误报率
人群流向
Smart home
Active infrared alarm system
Wireless Communication
False alarm rate
Detection value of unit length
Crowd flow
