[法学]安徽工程科技学院毕业论文细节要求.doc
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1、安徽工程科技学院 本科毕业设计(论文)开题报告题目: 课 题 类 型: 学 生 姓 名: 专 业 班 级: 指 导 教 师: 开 题 时 间: 年 月 日 一、毕业设计(论文)内容及研究意义(价值)1.设计的内容:二、毕业设计(论文)研究现状和发展趋势(文献综述)1.研究现状:2.我国汽车仪表产品现状:3.发展趋势:三、毕业设计(论文)研究方案及工作计划1、设计思路操作面板告警信号输出单片机A/D转换 模 块90模拟量和数据量采集显示模块2. 系统组成及工作原理 软件设计因为C语言编写的软件易于实现模块化,生成的机器代码质量高、可读性强、移植好,所以本系统的软件采用C语言编写,在Keil Vi
2、sion3 Demo版本的集成开发环境下进行编译连接,在Protues环境中进行仿真。 仿真调试代写#论$文&QQ:234952635在仿真调试阶段,将protues和keil软件联合,采用“自底向上,逐步集成”的策略,逐模块进行仿真测试,在此基础上逐步集成。譬如可先仿真显示模块、测速子模块、测温子模块等,然后将仿真成功的模块逐个加入主程序进行仿真,在仿真过程中出现错误,采用“分块压缩策略”,快速找到并改正错误;注意在集成工程中出现问题,大多是由于模块间资源使用冲突引起的。当软件模块仿真成功后,可与硬件一起进行在线仿真,此时在调试中的问题大多是由于连接线路错误、虚焊、布线不合理等原因造成的。3
3、.重点和难点1.对于车速、温度、油压、油量的采集,对于各种传感器的选择是很重要的。汽汽车传感器作为汽车电子控制系统的信息源,是汽车电子控制系统的关键部件,也是汽车电子技术领域研究的核心内容之一,汽车传感器对温度、压力、位置、转速、加速度和振动等各种信息进行实时、准确的测量和控制。衡量现代高级轿车控制系统水平的关键就在于其传感器的数量和水平。当前,一辆国内普通家用轿车上大约安装了近百个传感器,而豪华轿车上的传感数量多达200只。 2.对于A/D转换模块的程序设计是很复杂的,由于采用多个传感器,所以把模拟量转换数字量过程是设计程序的核心。程序设计模块是控制整个设计功能是否实现的关键,故是难点。3.
4、由于本设计中可能用到步进电机驱动指针式仪表,所以单片机控制步进电机也是本设计的一难点。 4.工作计划学生姓名专业起止日期(日/月)周次内 容 进 程备 注3.01-3.071熟悉设计的课题,查阅、整理参考文献和资料3.08-3.142理清思路,撰写开题报告3.15-3.213对开题报告进行修改3.22-3.284学习protel、keil和 protues软件3.29-4.045开题答辩,对设计课题的方案作初步论证4.05-4.116方案论证,方案改进,方案定稿4.12-4.187熟悉毕业论文格式、撰写论文初稿4.19-4.258撰写论文初稿4.26-5.029撰写论文初稿5.03-5.091
5、0设计硬件原理图5.10-5.1611实现软件设计5.17-5.2312在protel中设计原理图,并用protues仿真5.24-5.3013根据原理图做电路板5.31-6.0614调试程序6.07-6.1315整理毕业设计,完善设计内容1楼然苗主编.51系列单片机设计实例第二版.北京:北京航空航天大学出版社.2006.22宋浩主编.单片机原理与应用.北京:清华大学出版社 北京交通大学出版社.2005.13赵家贵 付小美 董平主编.新编传感器电路设计手册.北京:中国计量出版社.2002.94卿太全 郭晓琼编著.最新传感器选用手册.北京:中国电力出版社.2009.75贾伯年 俞朴等编著.最新传
6、感器技术.南京:东南大学出版社.2006.126吴飞青 丁晓 李林功等编著.单片机原理与应用实践指导.北京:机械工业出版社.2009.27王安敏 刘国建 基于单片机的车用仪表的设计与实现J汽车电子.2007.269-271.8Y.Greets,A.M.Marques,M.S.J.Steyaert and W.Sansen,”A 3.3v,15-bit,Delta-Sigma ADSL Application,”IEEE J.Solid-State Circuits,vol.34,No.7,pp.927-936,July 1999.9Sung-MoKang.Yusuf Leblebici:CMO
7、S Digital Integrated Circuits-Analysis and Desin.McGraw-Hill.Inc.1996.外文文献DS18B20FEATURESl Unique 1-Wire Interface Requires Only One Port Pin for Communicationl Each Device has a Unique 64-Bit Serial Code Stored in an On-Board ROMl Multidrop Capability Simplifies Distributed Temperature-Sensing Appl
8、icationsl Requires No External Components l Can Be Powered from Data Line; Power Supply Range is 3.0V to 5.5Vl Measures Temperatures from -55C to +125C (-67F to +257F)l 0.5C Accuracy from -10C to +85Cl Thermometer Resolution is User Selectable from 9 to 12 Bitsl Converts Temperature to 12-Bit Digita
9、l Word in 750ms (Max)l User-Definable Nonvolatile (NV) Alarm Settingsl Alarm Search Command Identifies and Addresses Devices Whose Temperature isl Outside Programmed Limits (Temperature Alarm Condition)l Available in 8-Pin SO (150 mils), 8-Pin SOP,and 3-Pin TO-92 Packagesl Software Compatible with t
10、he DS1822l Applications Include Thermostatic Controls,Industrial Systems, Consumer Products,l Thermometers, or Any Thermally Sensitive SystemDESCRIPTIONThe DS18B20 digital thermometer provides 9-bit to 12-bit Celsius temperature measurements and has an alarm function with nonvolatile user-programmab
11、le upper and lower trigger points. The DS18B20 communicates over a 1-Wire bus that by definition requires only one data line (and ground) for communication with a central microprocessor. It has an operating temperature range of -55C to +125C and is accurate to 0.5C over the range of -10C to +85C. In
12、 addition, the DS18B20 can derive powerdirectly from the data line (“parasite power”), eliminating the need for an external power supply.Each DS18B20 has a unique 64-bit serial code, which allows multiple DS18B20s to function on the same 1-Wire bus. Thus, it is simple to use one microprocessor to co
13、ntrol many DS18B20s distributed over a large area. Applications that can benefit from this feature include HVAC environmental controls,temperature monitoring systems inside buildings, equipment, or machinery, and process monitoring and control systems.The 64-bit ROM stores the devices unique serial
14、code. The scratchpad memory contains the 2-byte temperature register that stores the digital output from the temperature sensor. In addition, the scratchpad provides access to the 1-byte upper and lower alarm trigger registers (TH and TL) and the 1-byte configuration register. The configuration regi
15、ster allows the user to set the resolution of the temperature to digital conversion to 9, 10, 11, or 12 bits. The TH, TL, and configuration registers are nonvolatile(EEPROM), so they will retain data when the device is powered down.The DS18B20 uses Maxims exclusive 1-Wire bus protocol that implement
16、s bus communication using one control signal. The control line requires a weak pull up resistor since all devices are linked to the bus via a 3-state or open-drain port (the DQ pin in the case of the DS18B20). In this bus system, the microprocessor (the master device) identifies and addresses device
17、s on the bus using each devices unique 64-bit code. Because each device has a unique code, the number of devices that can be addressed on one bus is virtually unlimited. The 1-Wire bus protocol, including detailed explanations of the commands and “time slots,” is covered in the 1-Wire Bus System sec
18、tion.Another feature of the DS18B20 is the ability to operate without an external power supply. Power is instead supplied through the 1-Wire pullup resistor via the DQ pin when the bus is high. The high bus signal also charges an internal capacitor (CPP), which then supplies power to the device when
19、 the bus is low. This method of deriving power from the 1-Wire bus is referred to as “parasite power.” As an alternative, the DS18B20 may also be powered by an external supply on VDD.The search process is as follow:1. The bus master being the initialization seqrence by issuing a reset.The slave devi
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