2019年电子信息杯竞赛初赛试题

2019年电子信息杯竞赛初赛试题A. 模拟电路设计（组员一：电路设计）使用单+10V直流稳压电源供电，采用一片定时器（NE555）、一片四运放芯片（LM324）、一片D触发器芯片（SN74LS74）、电阻及电容设计制作如下图的一个复合信号发生器。使用限定用TI的Tina仿真软件。器件型号采用上述芯片，芯片数量按照题目要求，电阻、可调电阻、电容器件数量不限，不能采用除上述芯片、电阻、可调电阻、电容之外的任何器件。1. 设计产生矩形波Vo1： f=8kHz10KHz，占空比调节范围：60%80%，波形无明显失真；2. 对矩形波信号Vo1进行二分频产生Vo2：Vo2pp为TTL电平，输出阻抗：600，波形无明显失真；3. 将二分频输出矩形波信号转为Vo2锯齿波信号Vo3：锯齿波上升下降段线性度良好，输出阻抗：600，波形无明显失真；4. 从5kHz频率的多谐波（方波或锯齿波任选其一）中提取基波Vo4：Vo4pp7V，输出阻抗：600，波形无明显失真；5. 从5kHz频率的多谐波（方波或锯齿波任选其一）中提取三次基波Vo5：Vo5pp5V，输出阻抗：600，波形无明显失真；注：Tina软件基本教材见网页/view/6676e14452d380eb62946d76.html。B. 硬件电路制版（组员二：硬件设计）请将A题目中的电路使用Altium Designer 18.0进行电路原理图和PCB绘制，PCB板尺寸为75mmX100mm，器件所在库及封装见表一。表一 电路元器件所在库及封装元器件类型元所在库名称元器件名称元器件封装电阻Miscellaneous Devices.IntLibRes3J1-0603电位器Miscellaneous Devices.IntLibRPotVR5电解电容Miscellaneous Devices.IntLibCap Pol31812电容Miscellaneous Devices.IntLibCap Semi16080603NE555DTI Analog Timer Circuit.IntLibNE555DD008_NLM324ADTI Operational Amplifier.IntLibLM324ADD014_NSN74LS74ADTI Logic Flip-Flop.IntLibSN74LS74ADD014_N外部电源接口Miscellaneous Connectors.IntLibPWR2.5KLD-0202注：Altium Designer中基本芯片器件库lib下载地址为：/AD10-Libraries/Texas%20Instruments.zip 。Altium Designer18.0设计原理与PCB介绍文档下载链接：/s/1OZ1IZZgO84vghcqQAeAyPA 提取码：cb3i 。C. 单片机电路设计（组员三：软件设计）按下图设计一个基于TI MSP430G2553的单片机测量显示系统，在Proteus 8.6软件中进行设计和编程调试，实现如下的功能：1) 输入题目A中Vo2信号，可以在七段数码管中显示当前频率和占空比，利用按键切换显示内容；2) 输入题目A中Vo4信号，可以在LCD屏幕中显示当前信号波形（2017级选作，2016级必作）； 3) 输入题目A中Vo3信号，可以在LCD屏幕中显示当前信号十倍频率以内的频谱（选作）。注：Protues介绍文档下载链接：/s/10iRaRA4ftrGKvR9g6U-6ww 提取码：kozk 。D. 说明所有的题目均提交文件即可，仿真提交仿真文件。模拟设计部分提交一个Tina仿真文件(参赛组号-班级-学号-姓名(组员一).TSC)，硬件电路制版提交原理图和PCB文件(参赛组号-班级-学号-姓名(组员二).schdoc和参赛组号-班级-学号-姓名(组员二).pcbdoc)，单片机设计部分提交Proteus工程文件(参赛组号-班级-学号-姓名(组员三). pdsprj)。请将提交的文件打包压缩好，压缩命名规则如下：参赛组号-队名，例如：2019C000-XXX队.rar。请在2018年12月25日0点前（以邮件发送时间为准），以“2019年电子信息杯初赛作品”为邮件主题，将上述文件作为附件，发送至：和1326967104 邮箱。附：初赛报名队伍组号参赛组号班级学号2019C0012017211202201721083220172112022017210837201721120220172108352019C0022017211205201721251820172112102017212093201721120420172118162019C0032017211204201721350620172112122017211107201721120720172109752019C0042017211209201721251620172112082017212533201721120220172125122019C0052017211204201721089220172112042017210897201721120420172108952019C0062017211203201721087020172112032017210855201721120320172108472019C0072017211207201721097420172112072017210956201721120720172109632019C0082016211209201621109420162112032016210857201621120520162109162019C0092017211208201721098820172112082017210992201721120520172109252019C0102017211201201721080220172112012017210799201721120120172107912019C0112017211209201721102020172112092017211023201721120920172110222019C0122016211202201621082220162112022016210818201621120220162108192019C0132017211206201721339520172112052017213454201721120820172134122019C0142016211208201621098020162112082016210987201621120820162109922019C0152017211211201721107320172112112017211078201721121120172110842019C0162016211210201621103720162112102016211034201621121020162110282019C0172016211201201621078820162112012016210797201621120220162108152019C0182016211201201621079020162112042016210875201621120420162108702019C0192017211209201721103020172112122017211103201721121220172111082019C0202017211207201721098020172112072017210965201721120720172109622019C02120172112052017210926 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