数字电子脉搏计的设计(附元件清单,程序,CAD图)(毕业论文12300字,CAD图纸5张)
摘 要:脉搏波所呈现出来的形态、强度、速率和节律等方面的综合信息。
关键词:脉搏计;传感器;单片机;
Design of the Nuierical Electronic Pulse Accounts
Abstract:The shape,intensity,speed,and rhythm of pulse signals mostly reflect the physical and pathological characters of heart-blood system in human bodies.According to the characteristics of the human pulse signals,the digital electron pulsometer uses the infrared photoelectricity type sensor to take the pulse signal examination part,and uses the electric circuit to enlarge,filter and reshape the pulse signal;It uses the 80C51 monolithic integrated circuit to take the control core,and uses the procedure to survey and control the pulse signal together;it has the keyboard entry established,the sound warning prompted and the measurement result demonstrated functions.Tests show that the system can measure and display the pulse fluctuation frequency,providing an objective basis for doctors to diagnose and having certain clinical value.At the beginning of the paper,the integral notion of the device design is brought out.Afterwards,the detail information of each part is narrated.At last part,some suggestions for improving the device are provided.
Key words: Pulsometer;Sensor;Monolithic integrated circuit
目 录
摘 要……………………………………………………………………………………1
关键词…………………………………………………………………………………1
1前言………………………………………………………………………………1
2 数字电子脉搏计方案的确定………………………………………………………2
2.1 脉搏计基本工作要求及其功能……………………………………………2
2.2 脉搏计基本方案的选择及确定……………………………………………3
3 传感器的选择及其电路的设计……………………………………………………5
3.1 传感器的选用及其原理结构…………………………………………5
3.2 传感器电路的设计…………………………………………………………6
3.2.1 发射光电路的设计…………………………………………7
3.2.2 接收光电路的设计……………………………………………7
4 放大、滤波、整形电路及元器件的选择………………………………………8
4.1 放大电路的设计及其元器件的选择………………………………………8
4.2 滤波电路的设计及其元器件的选择………………………………………9
4.2.1 整形电路的设计及其元器件的选择………………………………10
5 单片机的选择及其基本电路………………………………………………………11
5.1 单片机选型………………………………………………………………11
5.2 80C51的基本电路…………………………………………………………12
6 键盘及其与80C51输入接口电路的设计…………………………………………14
7 显示电路的设计及其元器件的选择…………………………………………15
7.1 显示器的选择及介绍………………………………………………………15
7.2 显示电路的设计及译码驱动器的选择……………………………………16
8 警报提示接口电路的设计及其元器件的选择……………………………………18
9 电源电路的设计……………………………………………………………………20
10 系统总电路图……………………………………………………………………21
11 单片机程序的设计………………………………………………………………22
12 结论………………………………………………………………………………23
参考文献 ……………………………………………………………………………24
致谢……………………………………………………………………………………25
附录……………………………………………………………………………………26
附录 1……………………………………………………………………………26
附录 2……………………………………………………………………………34