基于光学逆向门禁的智能家居安防系统

发布时间：2018-10-29 17:16

【摘要】：随着电子信息产业和互联网技术日新月异的发展,各种智能化的家居产品被生产出来,对于市场上的一些家居安防产品,大都是面向别墅、企业等大型地方开发设计的,很难实现系统的真正普及应用。所以,本课题面向家庭环境,设计实现了基于光学逆向门禁的智能家居安防系统。本课题首先从光学逆向调制识别技术门禁系统开始入手,然后组建了以WiFi通信的家庭无线局域网,实现了基于ARM Cortext-A8为核心板的中心控制器和基于MSP430单片机为MCU的节点终端数据采集交互,讨论了家居安防具体实现,搭建了多功能且成本较低的智能门禁系统。完成了智能门禁系统的中心控制器的设计,该处理器具有基本的门禁功能,还具有智能安防监控中心的作用。门禁系统采用了的光学逆向调制技术,完成了门禁系统的钥匙和锁体的结构设计,测试给出了接收最强信号时的压电片频率和接收距离;完成了信号加载部分的驱动压电片的振荡电路和检测部分的放大滤波电路、检波等电路设计,编写了相应功能及实现的配套程序和测试程序,并对门禁系统样机稳定性做了必要的测试分析;还完成了中心控制器SDIO接口、LCD显示屏驱动等其它硬件电路设计,为核心板的Linux操作系统的移植提供了基础,并且完成了相应的交叉编译环境的构建。另外,通过GSM模块实现了用户和家庭中心处理器远程交互。最后,在PC机上利用QT软件开发平台完成了传感器上传物理量数据界面设计,并移植嵌入到中心控制器的LCD显示屏上显示。节点终端负责采集家庭环境各种数据,包括温度、压力和烟雾等,将采集到的物理量数据直接经由WiFi模块传送给中心控制器,另外,节点上设计了控制电路,可以响应中心控制器的指令对家用电器等进行控制。最后,搭建了流媒体系统,配置了FFserver服务器,完成了USB摄像头的视频采集,将采集的视频经FFmpeg转换成视频流实时上传至服务器。
[Abstract]:With the rapid development of the electronic information industry and Internet technology, various kinds of intelligent household products have been produced. For some household security products in the market, most of them are developed and designed for villas, enterprises and other large places. It is difficult to realize the real universal application of the system. Therefore, this paper designs and implements a smart home security system based on optical reverse access control. This subject starts with the optical reverse modulation recognition technology, and then sets up the home wireless local area network (WLAN) based on WiFi communication. The central controller based on ARM Cortext-A8 as the core board and the node terminal data collection interaction based on MSP430 single chip computer as MCU are realized. The realization of home security is discussed, and an intelligent access control system with multi-function and low cost is built. The central controller of the intelligent access control system is designed. The processor has the basic function of access control and the function of intelligent security monitoring center. The optical reverse modulation technology used in the access control system has completed the structural design of the key and lock of the access control system. The frequency and the receiving distance of the piezoelectric chip when receiving the strongest signal have been measured and given. The oscillating circuit of driving piezoelectric plate and the circuit of amplifying and filtering and detecting circuit of the signal loading part are completed, and the corresponding function and the corresponding program and test program are written. The stability of the door guard system prototype is tested and analyzed. Other hardware circuits, such as SDIO interface of central controller and driver of LCD display screen, are also designed, which provides the basis for the transplantation of the core board Linux operating system, and completes the construction of the corresponding cross-compiling environment. In addition, the remote interaction between user and home center processor is realized by GSM module. Finally, the interface design of the sensor upload physical quantity data is completed by using the QT software development platform on the PC computer, and the interface is transplanted to the LCD display screen embedded in the central controller. The node terminal is responsible for collecting all kinds of data in the home environment, including temperature, pressure and smoke, and transmits the collected physical quantity data directly through the WiFi module to the central controller. In addition, the control circuit is designed on the node. Can respond to the instructions of the central controller to control household appliances and so on. Finally, the streaming media system is built, the FFserver server is configured, the video capture of the USB camera is completed, and the collected video is converted into the video stream by FFmpeg and uploaded to the server in real time.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU855
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本文编号：2298316