【正文】 ????????????????????????????????????????????????7 控制器 ..............................................................................................................7 AT89S52 簡介 ..............................................................................................7 AT89S52 的特點 ..........................................................................................7 AT89S52 的結(jié)構(gòu) ..........................................................................................7 電源電路 ......................................................................................................10 時鐘電路 ......................................................................................................10 復(fù)位電路 .....................................................................................................11 脈搏信號采集 .................................................................................................12 光電傳感器的原理 ......................................................................................12 光電傳感器的結(jié)構(gòu) ......................................................................................12 光電傳感器檢測原理 .................................................................................13 信號采集電路 ..............................................................................................13 信號放大 .........................................................................................................14 放大電路 .....................................................................................................15 波形整形電路 ................................................................................................17 單片機處理電路 .............................................................................................17 顯示電路 ........................................................................................................18第四章 軟件系統(tǒng) ???????????????????????????????????????????????????????????????????????????????????????????????????21 主程序流程 ....................................................................................................21 INT 中斷程序流程 .........................................................................................22 顯示程序流程 ................................................................................................22 軟件說明 ........................................................................................................23第五章 抗干擾措施及使用方法 ???????????????????????????????????????????????????????????????????????24 抗干擾措施 .....................................................................................................24 環(huán)境光對脈搏傳感器測量的影響 ..............................................................24 電磁干擾對脈搏傳感器的影響 ..................................................................24 測量過程中運動噪聲的影響 .....................................................................25 測量儀使用方法 .............................................................................................25第六章 系統(tǒng)調(diào)試 ???????????????????????????????????????????????????????????????????????????????????????????????????26 系統(tǒng)調(diào)試 ........................................................................................................26 系統(tǒng)檢驗 ........................................................................................................27 誤差分析 ........................................................................................................28參考文獻 ???????????????????????????????????????????????????????????????????????????????????????????????????????????????????30致 謝 ?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????31附 錄 A??????????????????????????????????????????????????????????????????????????????????????????????????????????????????32附 錄 B??????????????????????????????????????????????????????????????????????????????????????????????????????????????????37附 錄 C??????????????????????????????????????????????????????????????????????????????????????????????????????????????????38基于單片機的脈搏測量儀設(shè)計摘要：脈搏測量儀在我們的日常生活中已經(jīng)得到了非常廣泛的應(yīng)用。為了提高脈搏測量儀的簡便性和精確度，本課題設(shè)計了一種基于51單片機的脈搏測量儀。系統(tǒng)運行中能顯示脈搏次數(shù)和時間，系統(tǒng)停止運行時，能夠顯示總的脈搏次數(shù)和時間。關(guān)鍵詞：脈搏測量儀；AT89S52 單片機；光電傳感器 IDesign of Pulse Measuring System Based On MCS51 MCUAbstract: Pulse measuring instrument has been widely used in our daily life. In order to increase its simplicity and accuracy, this subject designs one system based on singlechip microputer and infrared light emitting diode and photo transistor as sensors, and calculates time with the inner timer. The sensor produces pulse and the singlechip microputer gets the frequency by accumulating the pulses, and the timer obtains the time. The system could display the frequency and time of the pulse during operation. It can also shows the total number when it stops. After testing, the system works well and meets the design requirements.Keywords: Pulse Measurement。 Photoelectric Sensor 0引 言隨著科學技術(shù)的發(fā)展，脈搏測量技術(shù)也越來越先進，對脈搏的測量精度也越來越高，國內(nèi)外先后研制了不同類型的脈搏測量儀，而其中關(guān)鍵是對脈搏傳感器的研究。指脈測量比較方便、簡單，但因為手指上的汗腺較多，指夾常年使用，污染可能會使測量靈敏度下降：耳脈測量比較干凈，傳感器使用環(huán)境污染少，容易維護。過去在醫(yī)院臨床監(jiān)護和日常中老年保健中出現(xiàn)的日常監(jiān)護儀器，如便攜式電子血壓計，可以完成脈搏的測量