摘要在对火灾探测和报警系统的国内外现状、组成结构、系统要求研究的基础上,设计了一种基于CAN总线的具有实时性和抗扰性的家庭火灾探测与报警系统。根据相关国家标准,针对家庭火灾探测的特点,选择了合适的火灾探测器和火灾控制器。采用先进的CAN总线技术组建了系统网络,能够增强系统的可靠性和可扩充性。利用Protel99se对系统进行了具体的硬件设计,利用C51编写了能够实现系统功能的程序。整个系统主要实现两个功能:现场节点的检测报警功能和通过CAN总线与监控节点的通信功能。61474
毕业论文关键词 CAN 火灾探测 报警
毕业设计说明书(论文)外文摘要
Title Hardware Design of Family Fire Detection and Alarm System Based on MCU
Abstract Based on the study of the current situation, structure and requirements of fire detection and alarm system, a kind of family fire detection and alarm system featured in CAN bus is designed, which owns great real-time and anti-interference property. According to relevant national standards and characteristics of family fire prevention, proper fire detector and fire controller are chosen in the hardware design. The advanced CAN bus is adopted to organize network of the system, which can enhance reliability and extendibility. The hardware circuit is drawn with the help of Protel99se, while the software is written on the platform of C51. The detection and alarm of field node and the communication with monitoring node through CAN bus are the main function of the system.
Keywords CAN bus Fire detection Alarm
1 绪论 1
1.1 课题研究的背景及意义 1
1.2 课题的国内外研究现状 2
1.3 论文的主要研究内容 3
2 单片机控制的家庭火灾探测与报警系统总体方案设计 4
2.1 家庭火灾探测特点 4
2.2 火灾自动报警系统设计规范相关内容 4
2.3 火灾报警系统总体设计思路 6
2.4 火灾探测器的选择 6
2.5 火灾控制器的选择 10
3 火灾报警系统硬件设计 12
3.1 控制器最小系统设计 12
3.2 传感器前向通道设计 14
3.3 报警电路设计 17
3.4 电源电路设计 18
4 火灾探测系统的CAN总线通信 20
4.1 CAN总线简介 20
4.2 CAN总线节点的电路设计 23
4.3 CAN总线通信软件设计 27
5 家庭火灾探测报警系统软件设计 32
5.1 主程序设计 32
5.2 初始化程序设计 33
5.3 数据采集程序 33
5.4 数字滤波程序设计 35
5.5 数据处理及报警程序设计