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[其他] 17电设校选

该系统为一个帆板控制系统,通过对风扇转速的控制,通过调节风力大小达到改变帆板角度的目的。本系统以AT89C52单片机作为系统的核心控制芯片,利用ADXL345 三轴加速度传感器来的采集、处理帆板角度,选用中速轴流风机电机作为风扇的制动源,系统显示采用LCD12864液晶,用于实时显示帆板的角度大小。 对于关键的电机驱动电路,经过充分的比较与论证,最终选用驱动模块L298N,通过单片机输出PWM脉冲,更好地实现了电机的调速;并且加入PID控制,实现了控制角度的优化。最后经过多次测试表明,系统完全达到了设计要求,不但完成了所有基本和发挥部分的要求,并增加实现了实时显示占空比全程变化的功能。
The system is a windsurfing control system. Through the control of fan speed, the angle of windsurfing can be changed by adjusting the wind power. This system uses AT89C52 chip as the core of the system control chip, angle acquisition and processing using ADXL345 three axis acceleration sensor array to the selection of medium speed axial fan motor as the braking source fan system, using LCD12864 liquid crystal display panels, the size of the angle for real-time display. The key to the motor drive circuit, through the comparison and discussion of full, final selection of L298N driving module, through the microcontroller output PWM pulse, better realize the motor speed; and adding PID control, realize the optimization of control angle. Finally, several tests show that the system has fully met the design requirements, not only to complete all the basic and play part of the requirements, and increase the real-time display of duty cycle changes in the entire function. (2017-08-13, C/C++, 191KB, 下载7次)

http://www.pudn.com/Download/item/id/1502606815284000.html

[其他] SportMeeting

学生运动会成绩数据库 问题描述:学生运动会成绩数据库系统记录某校运动会上全部运动项目,各系获得的分数及排名的情况,包括50、100、200,400,1500米,跳高,跳远,标枪,铅球铁饼等。进入系统后可以输入和修改某个项目的结果情况,可以按各系院编号输出总分;按总分排序;按男团体总分排序 ;按系院编号查询;按项目编号查询;按女团体总分排序。 分步实施: 初步完成总体设计,搭好框架,确定人机对话的界面,确定函数个数; 完成最低要求:建立一个文件,包括某个系,5个项目的得分情况,能对文件中的信息进行扩充(追加),修改和删除; 进一步要求:完成对多个系,多个项目的得分排序,以及完成系统查询功能。有兴趣的同学可以自己扩充系统功能。 键盘输入:系院数目,男子项目数女子项目数,(每项目取前三名,分别为10,5,2分) 要求:1)界面友好,函数功能要划分好 2)总体设计应画一流程图 3)程序要加必要的注释 4)要提供程序测试方案 5)程序一定要经得起测试,宁可功能少一些,也要能运行起来,不能运行的程序是没有价值的。
Problem Description: Student Games results of a database system for recording all the sports, school sporting events, various departments to obtain scores and ranking, including 50,100,200,400,1500 meters, high jump, long jump, javelin, shot put, discus and so on. Entering the system can enter and modify the results of a project, you can output Total Number of Hospitals by various departments sorted by Total by male groups Total sort by the Department of School No. inquiries by item number search by women groups Total sort. (2009-08-29, Visual C++, 46KB, 下载114次)

http://www.pudn.com/Download/item/id/893880.html
总计:202