毕业设计（论文）-基于单片机的电子血压计设计精选.doc

基于单片机的电子血压计设计 摘要 单片机以其卓越的性能，得到广泛的应用，以深入到各个领域，已经成为一种比较成熟的技术，在医学方面更是得到了较好的应用。血压是极为重要的健康指标，血压测量的准确与否直接关系到人们的健康。后通过感器传的电压经放大、滤波得到脉搏信号，计算出收缩压、舒张压和脉搏。本文对以上个部分的软硬件设计作了详细的阐述，介绍了核心芯片的选型，外围电路的连接，芯片与芯片之间的连接电路，程序设计方法和相应的软件程序。Abstract Single chip with its superior performance, are widely used to drill in various fields has become a mature technology, in medicine all the more yes get a better application. Blood pressure is extremely important health indicators, blood pressure measurement accuracy is directly related to peoples health. Modern cardiovascular disease trends showed younger age, so keep an eye on our blood pressure Bailey us harmless. This paper studies in blood pressure measurement method and wave method, on the basis of pulse wave theory, discusses with AT89C51 measuring principle of electronic device. After the air to air pump, the voltage sensor through enlargement, filtering, calculate the pulse signal obtained systolic pressure, diastolic pressure and pulse. Mainly introduces the design and the entire circuit chip. First of all, and the pulse wave based on oscillometric blood pressure measurement system design theory design project. The program hardware with AT89C51 microcontroller as the core, including signal acquisition and processing circuit, A / D converter circuit, memory expansion circuits, LCD circuits, Automatic Filling and Releasing circuit, most of the keyboard circuit a few. In this paper, several parts of the above detailed description of hardware and software design, introduced the selection of core chips, the external circuit connection, the connection between the chip and the chip circuit, program design methods and corresponding software program. Discussion illustrates the point of all parts of the circuit works, and the specific design of its hardware and software. Keywords:Single-chip,blood pressure,Sphygmomanometer, Oscillometric method, pulse waveform 目录 摘要 I Abstract II 目录 III 前言 1 1 血压计设计原理 4 1.1 示波法测量血压原理 4 1.1.1 引言 4 1.1.2 示波法概述 4 1.1.