毕业设计（论文）-二维高精度液晶显示电子指南针.docVIP

分类号：TP271 U D C：密 级：公 开 编 号： 申请学位专业： 电子科学与技术 申请学位类别： 工学学士 指导教师姓名（职称）： 论文提交日期： 2008年5月XX日 目 录 1. 绪论 3 1.1 煤矿环境概述 3 1.2 嵌入式系统概况 1 1.3 ARM处理器概况 1 1.4 论文课题的概述 1 1.5 论文设计的指标和任务 1 2. 系统框图及实现 1 2.1 系统需求分析 1 2.2 系统框图 2 3. 系统监测节点 3 3.1 监测节点理论概述 3 3.2 监测节点实际构造 3 4. 系统核心控制板 9 4.1 核心板分析 9 4.2 工控底板分析 12 5. 系统人机界面 1 5.1 硬件支持 1 5.2 设计思路 1 6. 系统网络构建 2 6.1 CAN-bus总线架构 2 6.2 CAN-bus总线协议 4 7. 系统软件架构 10 7.1 μC/OS-II操作系统 10 7.2 应用程序流程 11 8. 结束语 18 参考文献 19 9. 附 录 1 10. 致 谢 2 摘 要 指南针是中国古代最著名的四大之一，它是利用磁铁在地球磁场中的南北指极性而制成的一种指向仪器。指南针在不同的历史时期，有不同的形体和名称。指南针约出现于战国时期。当时的指南针是用天然磁石制成的，形状像一只勺，底圆，可以在平滑的地盘上自由旋转，其静止时，勺柄会指向南方。古人称之为“司南”。专用集成电路关键词：；； The design of electronic compass Abstract At present, a general problem that exists in mine industry.and pulse measuring technology is low accuracy and poor operability. Meanwhile, the high cost limits the patients and potential patients to duly adopt preventive detecting and to see a doctor. Therefore, it comes to the priority to study and develop an economical measuring technique that is safe, accurate and convenient. And the digital pulses counter can non-invasively monitor and automatically measure the heart rate. In accordance with the need of medical care, this design has framed a system diagram of digital pulses counter based on single chip processor(SCP) and analyzes the operational principle of the system; it also schemes out the circuit of all the modules and writes the program of single chip processor controlling and data processing in C language. This design draws the system principle diagrams and makes the PCB plug board chart with Protel 99SE and works out the pulse digital signal processing(DSP) and the actual sample of display circuit. The system diagram of digital pulses counter based on single chip processor has the following functions, such as pulse measuring, pulse information storage and recalling, time display, arrhythmia alarm, etc. The digital pulses counter works stably with a simpl