基于安卓平台的分布式防拆报警控制系统.doc

基于安卓平台的 分布式防拆报警控制系统 目录 摘 要 3 第1章 绪论 5 1.1研究背景和意义 5 1.2安卓应用的发展及前景 6 第2章 硬件介绍 7 2.1 ARM-STM32 7 2.2 A8 8 第3章 系统需求与总体设计 9 3.1 市场需求 9 3.2 系统整体设计 9 第4章 系统实现 10 4.1 硬件实现 10 4.1.1信号模拟 10 4.1.2 RS485通信原理 10 4.1.2.1 RS485接口 10 4.1.2.2 通信方式 11 4.1.2.3 串口连接 12 4.2软件实现 13 4.2.1信号检测 13 4.2.2信号接收 14 4.2.3 信号传递 15 参考文献 19 摘 要 随着城市的建筑当中所使用的监控设备逐渐的增加，很多的人开始关注监控设备的使用。人们在社会中对自身安全度和生活舒适度的认知提高了财产安全等等都需要得到更大范围的保护，因此各种安全防范系统就应运而生了，其中防报警系统是具有代表性的安全防范设施之一。使用ARM Cortex-M3处理器内核的32位微控制器STM32前端报警控制器检测报警信息ARM Cortex-M3，Android平台 Abstract With the construction of the city of the monitoring equipment used by gradually increased, many people begin to pay close attention to the use of monitoring equipment. People in society is to improve the safety and comfort of life cognition, property safety and so on all need to get a wider range of protection, so the various security system is born, including tamper alarm system is one of the typical safety facilities. This system is to use the 32-bit microcontrollers STM32 which is ARM Cortex-M3 processor core, through the RS485 bus technology to realize the communication between the microcontroller and A8, the buttons on the single chip microcomputer analog signal in real life apart, press button show opened signal, then use RS485 bus technology to transmit signals to the A8, the serial port app on A8 receive alarm signal and alarm, which forms a simple tamper alarm control system. System development is mainly composed of three modules, one is in the keil environment for detecting buttons, as a front-end detection alarm controller alarm information, the other is in the Android platform to realize the alarm signal interpretation, as a background to deal with alarm. The most important part is to realize the alarm signal transfer through the RS485 bus technology. The development of this system, the RS485 communication is the key, mainly introduce how to implement microcontroller and A8 communications through