基于单片机的数字语音血压计的设计(附程序清单)(任务书,开题报告,论文16000字)
摘 要
当今社会科学技术迅速发展，人们生活水平不断提高的同时，不健康的生活方式和不科学的饮食习惯也导致越来越多的疾病的出现，特别是心脑血管疾病的发病率和死亡率有了明显提高，其中，高血压病更被称为“人类健康第一无形杀手”且逐渐呈现低龄化趋势。血压作为人身体健康的一项重要指标，其高低可直接影响全身各组织器官的血液供给。因此，及时、准确地掌握自己血压的高低变化情况对及时预防和适时治疗心脑血管疾病具有十分积极的意义。随着家庭医疗保健的流行，数字血压计的操作简单，测量值便于记录，体积轻巧便于携带等诸多优点受到大众家庭的欢迎。
论文主要研究了以AT89C51单片机为控制核心的数字血压计的设计与实现。利用血压传感器把用户的血压信号转变为微弱的电信号，再进行放大滤波处理，然后通过ADC0808转换器将电压信号转换为数字信号,再经过单片机处理后在LCD 液晶显示屏上显示血压测量结果,同时语音播报，存储结果。
设计分为硬件部分和软件部分，其中硬件部分包括AT89C51 单片机、传感器电路、滤波放大电路、A/D转换模块，键盘模块、LCD 显示模块等，软件部分采用汇编语言，由主程序和若干子程序组成。
关键词：血压计；示波法；AT89C51 单片机；ADC0808；LCD
Abstract
Nowadays, the rapid development of science technology makes people's living standard continuously improve, at the same time, people's unhealthy lifestyle and.poor dietary habits also lead to more and more diseases, especially cardiovascular disease, its morbidity and mortality has been significantly improved,among them, hypertension is more known as "human health first intangible killer" and gradually showing the trend of younger age.As an important indicator of human health, blood pressure can directly affect the blood supply of tissues and organs of the whole body.Therefore, the timely and accurate control of the high and low levels of blood pressure is very positive for the timely prevention and timely treatment of cerebrovascular disease.With the popularity of family medical care, digital sphygmomanometer has many advantages, such as simple operation, easy to record the value of measurement, light weight, easy to carry and so on, and it is welcomed by the public family.
This thesis mainly studies the design and implementation of digital sphygmomanometer based on AT89C51 single chip microcomputer.The use of blood pressure sensor to the user's blood pressure signal into a weak electrical signal, and then zoom filter processing, and then through the ADC0808 converter to convert the analog signal into a digital signal, and then after the microcontroller processing LCD display on the blood pressure measurement results, While voice broadcast, storage results.
Design is divided into hardware and software parts, including hardware AT89C51 microcontroller, sensor circuit, filter and amplifier circuit, AD conversion module, keyboard module, LCD display module, voice broadcast module.The software part adopts assembly language, which consists of main program and several subroutines.
Key Words：sphygmomanometer；Oscillatory method；AT89C51 microcontroller；ADC0808 ；LCD
目 录
第1章 绪论 1
1.1 课题背景及意义 1
1.1.1 背景 1
1.1.2 血压的测量方法 1
1.2 国内外研究现状 2
1.2.1 国外研究现状 3
1.2.2 国内研究现状 3
第2章 数字血压计设计原理 5
2.1 示波法测量血压原理 5
2.2 系统总体设计方案 6
第3章 系统硬件设计 8
3.1 微控制器模块 8
3.2 传感放大模块 10
3.3 A/D转换模块 11
3.3.1 ADC0808工作原理 12
3.3.2 ADC0808与单片机接口电路 13
3.4 显示模块和键盘模块 15
3.4.1 LCD显示模块 15
3.4.2 键盘模块 15
3.5 系统总体硬件电路 16
第4章 系统软件设计 18
4.1 系统软件主程序 18
4.2 显示模块子程序 19
4.3 确定最大值子程序 20
第5章 系统仿真与调试 21
第6章 总结与展望 22
参考文献 25
附录 27
致 谢 38
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