基于CS1180压力传感器检测系统的控制板设计毕业论文.doc

基于CS1180压力传感器检测系统的控制板设计毕业论文题 目: 基于CS1180压力传感器检测系统的控制板设计 姓 名: 学 号： 专 业: 计算机科学与技术 指导老师: 目 录摘要·····································································································3 ABSTRACT······························································································41. 绪论··································································································511 国内外研究现状、水平及存在的问题·········································512 课题的目的和意义·································································51.3 本课题设计的方案································································72. 嵌入式系统························································································821 什么是嵌入式系统·································································822 嵌入式系统特点及应用 ·························································83. 开发板的硬件结构和原理··································································103.1 微处理器AtmelAT91SAM7X256芯片······································1032 ARM7开发平台的主要原理功能说明·······························113.3 开发板硬件资源 ·································································113.4 扩展模块 ··········································································123.5 开发工具·········································································133.6 基于AT91SAM7X256的ARM7开发平台开发板清单·········· ··134 技术支持及相关驱动·········································································1441 实时操作系统UC/OS-II························································1442 串口通信············································································194.2.1 RS232简介································································204.2.2 RS232 标准······························································214.2.3 RS232通信模式·························································224.2.4 USART框图及驱动流程··············································224.2.5 外设控制寄存器PDC ·················································254.3 CAN····················································································274.3.1 CAN简介 ·································································284.3.2 CAN协议 ·································································294.3.3 CAN帧格式·······························································304.3.4 CAN电气特性及信号表示 ··········································304.3.5 主要技术特点及驱动·················································304.4 USB····················································································3545 液晶、键盘··········································································365. 结束语····························································································376. 参考文献·························································································387. 致 谢·························································································398. 附 录·························································································40基于CS1180压力传感器检测系统的控制板设计摘 要 本方案是设计一个称重产品,主要应用于工业控制.其采用先进的测试手段、嵌入式ARM控制系统、20（24）位AD、结合复杂分析软件的高精度测量控制系统，以试验机为主机，配以传感器、引伸仪和计算机，同时在传统行业基础上，增加控制功能、管理功能、兼带USB传输以及CAN总线传输方式，把采集到的数据，传给PC机或液晶进行显示，PC机及液晶可对采集数据进行处理或通过设置去选择采集哪部分数据，用PC对主机进行控制，保证在任何条件下对拉力，压力、冲击、弯曲等强度或力值数据的完美、准确的测量。关键字: 串口，控制器局域网，实时操作系统，通用串行总线ABSTRACTThis project is a weigh up avoirdupois production,Apply to Industry control.This adopts advanced test-means、Embed ARM controlling system、20(24)bit AD、hight precision measure controlling system combined with complex analysing software.It uses test-machine as its main machine and it is compounded with transducer、apparatus and computer.At the same time,based on the traditional industry,this project has added controlling function and management、the transmission means of USB annexed with CAN bus .It sends to PC or LDC the data collected and then deals with them.It controls the main machine by computer to ensure that, at any time,the data measure of intensity or force of pulling force、pressure、impact、bend and so on is perfect and correct.Key Words：RS232，CAN，RTOS，USB 绪 论（一）、国内外研究现状、水平及存在的问题随着各行各业对试验机产品需求的增长，随着我国生产制造水平的不断提高和测试技术的飞速发展，目前生产试验机的公司和企业已遍布全国各地，生产着几百种规格、型号和系列的试验机产品，有的试验机产品已出口到国外，远销到亚洲和欧美市场，具有一定的竞争能力。试验机广泛应于用工矿企业、计量、学校的现场和实验室，其应用领域涉及到机械、冶金、汽车、建筑、航空、航天、军工、交通、运输、质检、计量、教育、医疗等各行各业。虽然该行业具有比较诱人的前景，广大的客户群体，但是由于传统产品的试验机设备在国际上已被淘汰，在国内也已不能满足新修订的试验方法标准GB228的要求，急需更新换代。从市场及效益分析长远和发展的角度看，结合目前国内厂家的技术成熟程度和生产能力，提供给用户的产品90%仍是老式产品，开发一种基于先进的、高性能的、高智能性的数字化多功能试验机，来取代目前国内不能满足用户需求的老式产品，洗牌当前市场上的较落后的试验机设备，这必将是历史发展的必然，数字化（也称为仪器化）试验机，定使测控试验焕发出青春，赋予了新的生命。（二）、 课题的目的和意义当今国际市场称重传感器技术