基于單片機(jī)的智能脈搏測(cè)量?jī)x的設(shè)計(jì)

①頁(yè)數(shù)
37
②字?jǐn)?shù)
10550
③摘要

摘要：隨著生物醫(yī)學(xué)工程技術(shù)的發(fā)展，醫(yī)學(xué)信號(hào)測(cè)量?jī)x器日新月異。生物醫(yī)學(xué)測(cè)量與臨床醫(yī)學(xué)和保健醫(yī)療的聯(lián)系日益緊密。通過(guò)對(duì)人體各種生理信號(hào)的檢測(cè)，更好的認(rèn)識(shí)人體的生命現(xiàn)象。
從脈搏波中提取人體的生理病理信息作為臨床診斷和治療的依據(jù)，歷來(lái)都受到中外醫(yī)學(xué)界的重視。脈搏波所呈現(xiàn)出的形態(tài)、強(qiáng)度、速率和節(jié)律等方面的綜合信息，能反映出人體心血管系統(tǒng)中許多生理病理的血流特征，將人體脈搏波轉(zhuǎn)化為電信號(hào)進(jìn)行測(cè)量和分析，使中醫(yī)的脈象有了一個(gè)客觀的分辨標(biāo)準(zhǔn)，便于揭開(kāi)脈診現(xiàn)代科學(xué)本質(zhì)，為預(yù)防和治療疾病提供參考。脈搏是微弱的生理信號(hào)，如果要準(zhǔn)確地對(duì)其測(cè)量，那么必須對(duì)硬件和被測(cè)者的狀態(tài)有很高的要求，根據(jù)人體脈搏信號(hào)特征設(shè)計(jì)了一套脈搏檢測(cè)裝置。該裝置由PVDF脈搏傳感器及其信號(hào)放大及濾波電路、A/D轉(zhuǎn)換、接口電路及脈搏信號(hào)數(shù)字處理軟件構(gòu)成。本文能夠采用LABVIEW虛擬儀器的操作面板及相應(yīng)的程序，顯示出脈搏的波形。
關(guān)鍵詞 ：STC89C52，脈搏，傳感器，檢測(cè)系統(tǒng)
Based on Single Chip Microcomputer Intelligent pulse detecting system
【Abstract】With the biomedical engineering technology development, medical signal measuring instruments are with each passing day. Biomedical measurement and clinical medicine and health care increasingly close ties. We could better understand of the phenomenon of human 1ife through various physiological signal detection of The human body.
Information from human blood pulse attracts more and more attention because it contains much pathological information which could be used as index to diagnose disease. The waveform, intensity and speed of pulse signals mostly read the physical and pathological characters of heart - blood system in human bodies. In this paper, the pulse signal that usually is felt by finger touching of Chinese doctors was transferred into electric signal and thus could be measured by modern scientific way. As a result, the measured quantities can be used by a doctor as a more consistent index to make diagnoses. The blood pressure and the pulse are one of the weak physiological signals. If we need to measure them accurately, We will have a very high requirement to the hardware and the state of the measured person. A pulse detecting system was developed and its functions, circuits and software based on LABVIEW were described in details. The system consists of a PVDF (polyvinylidene fluoride) pulse sensor, amplifiers, filters, A/ D translators, I/ O ports and integrated digital signal processing software. The most significant feature of the system is that the pulse wave shape can be displayed on the virtual panel by software based on LABVIEW.
【Key words】STC89C52，pulse，sensor，detecting system

④目錄
目 錄
第一章 系統(tǒng)總體方案設(shè)計(jì) 1
（一）系統(tǒng)框圖及其模塊組成結(jié)構(gòu) 1
（二）系統(tǒng)工作原理 1
第二章 硬件電路設(shè)計(jì) 2
（一）單片機(jī)系統(tǒng)硬件電路 2
（二）顯示電路 3
（三）脈搏信號(hào)采集 4
（四）信號(hào)預(yù)處理硬件電路 6
（五）A/D轉(zhuǎn)換電路 9
（六）串口與上位機(jī)顯示連接電路 10
第三章 程序設(shè)計(jì) 11
（一）總體軟件流程圖 11
（二）A/D采樣程序設(shè)計(jì) 11
（三）顯示程序設(shè)計(jì) 12
（四）數(shù)據(jù)處理 13
（五）定時(shí)計(jì)數(shù) 14
（六）與PC機(jī)連接程序 15
第四章 實(shí)驗(yàn)測(cè)試 16
（一）信號(hào)采集系統(tǒng)調(diào)試 16
（二）放大濾波電路調(diào)試 17
（三）系統(tǒng)整體測(cè)試 18
第五章 結(jié)論與展望 19
致 謝 20
英文譯文 22
中文資料 24
附錄 25
附錄A總電路圖 25
附錄B 總程序 25
⑤關(guān)鍵字
STC89C52，脈搏，傳感器，檢測(cè)系統(tǒng)
⑥參考文獻(xiàn);
參考文獻(xiàn)
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