本文選題：脈搏 + 血氧飽和度　； 參考：《東華大學(xué)》2015年碩士論文

【摘要】：脈搏是人體重要的生命指標(biāo)，氧氣是維持人體正常生命活動的物質(zhì)基礎(chǔ)，血氧飽和度則是人體組織供氧情況的重要參數(shù)。隨著生活水平的提高，人們愈來愈關(guān)注自身的健康。傳統(tǒng)的健康監(jiān)護以專業(yè)的醫(yī)療機構(gòu)為中心，采用專業(yè)的診療設(shè)備，以實現(xiàn)不定期的健康監(jiān)護。目前，主流的脈搏與血氧飽和度測量是以透射式的光學(xué)法為基礎(chǔ)，但是這種方法受測量部位的限制。采用反射式光學(xué)測量法檢測人體脈搏和血氧飽和度是今后研究的主要方向，在臨床上有著廣泛的應(yīng)用，如腦血氧、產(chǎn)程胎兒血氧監(jiān)護等。此外，在智能家居領(lǐng)域也有著廣闊的應(yīng)用前景，人們在家即可享受實時、日�；�、智能的健康監(jiān)護。 論文研究的基于FPGA的脈搏與血氧飽和度監(jiān)測系統(tǒng)包括信號采集子系統(tǒng)、數(shù)據(jù)接口和信號處理子系統(tǒng)、短距離無線數(shù)據(jù)通信子系統(tǒng)以及用戶界面(UI)子系統(tǒng)。信號采集子系統(tǒng)采用反射式血氧傳感器模組采集血液的光感信號，其中，，發(fā)射部件發(fā)出兩種波長的光，經(jīng)過人體組織的反射后被接收部件采集并轉(zhuǎn)換為光電流信號。再經(jīng)過模擬前端的放大、濾波和A/D轉(zhuǎn)換等處理，輸出數(shù)據(jù)。數(shù)據(jù)接口和信號處理子系統(tǒng)以FPGA為處理平臺，實現(xiàn)與模擬前端的SPI接口、與短距離無線數(shù)據(jù)通信子系統(tǒng)的I2C數(shù)據(jù)傳輸接口以及雙通道時分基-2DIF算法，它是針對論文的應(yīng)用背景下的基于FFT算法的改進算法。所述的SPI接口實現(xiàn)對模擬前端內(nèi)部寄存器的配置，使得模擬前端工作在用戶定義的環(huán)境下。另外，SPI接口實現(xiàn)模擬前端輸出數(shù)據(jù)的傳輸。雙通道時分基-2DIF算法對模擬前端輸出的數(shù)據(jù)序列進行處理。短距離無線數(shù)據(jù)通信子系統(tǒng)以低功耗藍牙片上系統(tǒng)nRF51822為平臺，采用點對點的傳輸方式，在Keil開發(fā)環(huán)境下開發(fā)基于S110SoftDevice協(xié)議棧的低功耗藍牙應(yīng)用。用戶界面(UI)子系統(tǒng)以支持藍牙4.0技術(shù)的智能手機等為用戶終端，以Android為系統(tǒng)軟件平臺，設(shè)計基于Android的應(yīng)用程序，接收低功耗藍牙片上系統(tǒng)發(fā)出的數(shù)據(jù)，并通過終端應(yīng)用程序界面實時顯示用戶的脈搏與血氧飽和度信息。此外，應(yīng)用程序還具有異常告警等功能，簡單實用。 通過對各子系統(tǒng)的功能進行模塊化的測試和驗證，結(jié)果表明各子系統(tǒng)的各功能模塊均達到了設(shè)計的目標(biāo)。最后，聯(lián)合各子系統(tǒng)測試和驗證系統(tǒng)的整體功能，通過在智能手機等用戶終端上觀察監(jiān)測到的人體脈搏與血氧飽和度參數(shù)值，并對異常告警功能進行了測試，測試的結(jié)果與正常人的參考值對比，結(jié)果表明，系統(tǒng)實現(xiàn)了基本的功能，達到了預(yù)期的設(shè)計目標(biāo)。
[Abstract]:Pulse is an important index of human life, oxygen is the material basis to maintain normal life activities, and oxygen saturation is an important parameter of oxygen supply to human tissues. With the improvement of living standard, people pay more and more attention to their own health. Traditional health care centers on professional medical institutions and adopts professional medical equipment to realize irregular health care. At present, the mainstream measurement of pulse and oxygen saturation is based on transmissive optical method, but this method is limited by the measuring position. The measurement of human pulse and oxygen saturation by reflex optical measurement is the main research direction in the future. It is widely used in clinic, such as cerebral blood oxygen, fetal oxygen monitoring during labor and so on. In addition, there is a broad application prospect in the field of smart home, people can enjoy real-time, daily, intelligent health care at home. The pulse and oxygen saturation monitoring system based on FPGA includes signal acquisition subsystem, data interface and signal processing subsystem, short range wireless data communication subsystem and user interface UI subsystem. The signal acquisition subsystem uses a reflective oxygen sensor module to collect the light signal of the blood. The emitter emits two wavelengths of light, which are collected and converted into photocurrent signals by the receiving part after the reflection of human body tissue. After analog front-end amplification, filtering and A-D conversion processing, output data. The data interface and signal processing subsystem take FPGA as the processing platform to realize the SPI interface with the analog front-end, the I2C data transmission interface with the short-range wireless data communication subsystem and the dual-channel time-division base -2DIF algorithm. It is an improved algorithm based on FFT algorithm under the application background of this paper. The SPI interface implements the configuration of the internal registers of the analog front end so that the simulation front end works in a user-defined environment. In addition, the SPI interface realizes the transmission of analog front-end output data. The two-channel time division basis-2 DIF algorithm is used to deal with the data sequence of analog front-end output. Based on the low-power Bluetooth on-chip system nRF51822, a low-power Bluetooth application based on the S110 SoftDevice protocol stack is developed in the Keil development environment by using point-to-point transmission mode in the short-range wireless data communication subsystem. The user interface (UI) subsystem uses smart phones supporting Bluetooth 4.0 technology as the user terminal and Android as the system software platform to design the application program based on Android to receive the data from the system on the Bluetooth chip with low power consumption. The user's pulse and oxygen saturation are displayed in real time through the terminal application interface. In addition, the application program also has abnormal alarm and other functions, simple and practical. The function of each subsystem is tested and verified by modularization. The results show that the function modules of each subsystem reach the goal of design. Finally, combined with the whole function of each subsystem test and verification system, the parameters of human pulse and blood oxygen saturation were observed on the user terminal such as smart phone, and the abnormal warning function was tested. The results of the test are compared with the reference values of the normal people. The results show that the system achieves the basic function and achieves the expected design goal.
【學(xué)位授予單位】：東華大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TH789

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