1511.基于CS1180压力传感器检测系统的软件设计毕业论文.doc

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······························································································3ABSTRACT·······················································································3绪论······························································································41 设计概述···················································································511设计简介···········································································512设计特点···········································································613设计布局···········································································614设计说明···········································································62硬件简介···················································································721系统简介············································································722芯片选择············································································723开发环境············································································824仿真器···············································································93嵌入式系统················································································1131嵌入式系统概述··································································1132嵌入式系统特点··································································1133构建驱动程序·····································································1134 RTOS-实时操作系统简介··················································1235 RTOS的优缺点···································································124具体实现··················································································1341主流程··············································································1342各模块实现········································································14421传感器·····································································14422 CS1180····································································14423 SPI·········································································1543键盘操作·······································································1644液晶显示······································································175调试·························································································236结束语······················································································287答谢·························································································29参考文献························································································31附录······························································································32基于CS1180压力传感器检测系统设计摘 要 称重技术的发展趋势是实现快速称量、提高灵敏度和测量精度、提高动态稳定性，本文设计了一种基于CS1180压力传感器检测系统的控制板。在文中，对压力传感器检测系统的控制板的工作原理做了详细阐述；设计了基于CS1180实现的压力传感器检测系统的机械部分和硬件电路部分，以及软件部分。该系统的测量精度和快速性都达到了一定的要求，并且能直观的显示称量结果。从一定意义上说，本文对高精度快速称重系统的研究做了初步性的探索，取得了一定的进展。本方案设计采用AT91SAM 7X256 ARM7处理器芯片，软件设计平台基于UC/OS-II实时嵌入式操作系统，软件编制采用C语言。共有若干个任务模块组成，大体应包括：键盘操作、液晶显示、CS1180A/D数据处理与输出、USB、RS232、CAN、SPI、电源、报警、测试全部机械性能和试验复现等。本文主要描述键盘操作、液晶显示、测试、数据处理。关键词 嵌入式系统，控制板，键盘，液晶，数据处理，RTOSABSTRACTThe development trend of weighing technology is implementing rapid weighing, improving the sensitivity and accuracy, enhancing dynamic stability. This paper describes the design of a control panel,which use check-up testing system base on CS1180 press sensor. In the paper, its work principle is described in detail; The mechanical part , the hardware circuit, and the software of control panel are designed,which is base on CS1180. The measurement precision and speed of the system have reached a certain requirement. And it can display the weighing results visually. In a certain sense, this paper has done a preliminary research and made some progress for the high-precision and rapid weighing system.This project uses processor CMOS chip of AR91SAM 7X256 ARM,software design base on UC/SO-II RTOS,software compile base on C .Its meke up of several task module.Its general comprise keyset manipulate,LCD,CS1180 data processing and putout,USB,RS232,CAN,SPI，electrical source,test capability of all mechanical,test reappearance etc.In this paper describe mainly keyset operate,LCD display,testing and data processing.Key Words：Embedded Sydtem,control panel,keyset,LCD,data pricessing绪论过去沿用的机械杠杆秤已不能适应生产自动化和管理现代化的要求。自六十年代以来，由于传感器技术和电子技术的迅速发展，电子称重技术日趋成熟，并逐步取代机械秤。尤其是七十年代初期，微处理机的出现使电子称重技术得到了进一步发展。快速、准确、操作方便、消除人为误差、功能多样化等方面已成为现代称重技术的主要特点。称重装置不仅是提供重量数据的单位仪表，而且作为工业控制系统和商业管理系统的一个组成部分，推进了工业生产的自动化和管理的现代化，它起到了缩短作业时间、改善操作条件、降低能源和材料的消耗、提高产品质量以及加强企业管理、改善