本文選題：心電監(jiān)護(hù) + 人體通信�。� 參考：《哈爾濱工業(yè)大學(xué)》2012年碩士論文

【摘要】：隨著全球老齡化進(jìn)程的加快和人們生活水平的提高，心腦血管等慢性疾病成為危害人們身體健康的頭號殺手。對心電信號等生理參數(shù)的實(shí)時(shí)采集與監(jiān)測能在一定程度上減輕或預(yù)防上述慢性疾病所帶來的危害。由于現(xiàn)代醫(yī)療電子技術(shù)的發(fā)展，高效便攜式的心電監(jiān)護(hù)設(shè)備和系統(tǒng)逐漸進(jìn)入了社區(qū)醫(yī)院或家庭的日常診斷中。近些年來，，隨著無線通信技術(shù)的發(fā)展，體域網(wǎng)通過在人體上佩戴或植入各種生理傳感器節(jié)點(diǎn)，并將節(jié)點(diǎn)信息由無線通信發(fā)往遠(yuǎn)程終端，從而在不影響人們?nèi)粘Ｉ钋闆r下，對人體生理信息進(jìn)行不間斷地實(shí)時(shí)監(jiān)控和診斷，同時(shí)也使得低成本、低功耗、小體積的監(jiān)護(hù)設(shè)備成為可能。目前這類系統(tǒng)主要是利用射頻電磁波實(shí)現(xiàn)信號的無線傳輸。但是由于大氣中各類電磁波的噪聲影響以及信號發(fā)射的高能量消耗給低功耗、高可靠性的無線心電監(jiān)護(hù)帶來了挑戰(zhàn)。 本文提出了一種便攜式、高可靠性、普通鋰電池供電的無線心電監(jiān)護(hù)系統(tǒng)。該系統(tǒng)采用人體通信技術(shù)實(shí)現(xiàn)無線心電監(jiān)護(hù)，具有心電信號采集，傳輸和存儲顯示等功能。與傳統(tǒng)系統(tǒng)相比，具有數(shù)據(jù)傳輸安全、可靠，高能效等優(yōu)點(diǎn)。本文在人體通信原理和信道分析的基礎(chǔ)上，設(shè)計(jì)了一種基于人體信道傳輸?shù)陌腚p工電容耦合型人體通信收發(fā)器：采用現(xiàn)場可編程邏輯器件、對數(shù)放大器、模擬比較器和帶通濾波器設(shè)計(jì)了40MHz頻段的OOK調(diào)制和解調(diào)電路，通過數(shù)字電路實(shí)現(xiàn)了8B/10B數(shù)據(jù)編解碼。通過改進(jìn)的SPI串行通信協(xié)議，利用ARM微處理器LPC2148實(shí)現(xiàn)對人體通信收發(fā)器的控制。在信號記錄端，通過ARM微處理器的接口電路設(shè)計(jì)及嵌入式程序設(shè)計(jì)，實(shí)現(xiàn)了基于FatFs文件系統(tǒng)的SD卡文件存儲功能，與個(gè)人電腦的USB通信功能以及其他一些輔助的存儲和顯示功能。同時(shí)在個(gè)人電腦端利用Visual C++設(shè)計(jì)了心電圖的動態(tài)顯示界面，可以實(shí)時(shí)觀察接收到的心電信號。本設(shè)計(jì)中的心電信號是采用中科院深圳先進(jìn)技術(shù)研究院自主研發(fā)的心電信號采集模塊獲得。 本文在現(xiàn)有的心電采集技術(shù)的基礎(chǔ)上，實(shí)現(xiàn)了基于人體通信技術(shù)的無線心電監(jiān)護(hù)系統(tǒng)的設(shè)計(jì)。這為可靠、安全、低成本、低功耗便攜式無線心電監(jiān)護(hù)系統(tǒng)的設(shè)計(jì)提供了理論和實(shí)踐依據(jù)。本系統(tǒng)集心電信號無線傳輸、存儲和顯示于一體，降低了傳統(tǒng)心電監(jiān)護(hù)系統(tǒng)的復(fù)雜性，推動了心電監(jiān)護(hù)技術(shù)的進(jìn)步，為體域網(wǎng)的研究奠定了良好的基礎(chǔ)。
[Abstract]:With the acceleration of the global aging process and the improvement of people's living standards, chronic diseases such as cardiovascular and cerebrovascular diseases have become the number one killer that endangers people's health. The real-time acquisition and monitoring of physiological parameters such as ECG signals can alleviate or prevent the harm caused by these chronic diseases to some extent. With the development of modern medical electronic technology, high efficiency and portable ECG monitoring equipment and system have gradually entered the community hospital or family daily diagnosis. In recent years, with the development of wireless communication technology, body area network, by wearing or implanting a variety of physiological sensor nodes on the human body, and sending node information from wireless communication to remote terminals, so as not to affect people's daily life. The real-time monitoring and diagnosis of human physiological information makes it possible to use low cost, low power consumption and small volume monitoring equipment. At present, this kind of system mainly uses radio frequency electromagnetic wave to realize the wireless transmission of the signal. However, due to the noise of electromagnetic waves in the atmosphere and the high energy consumption of signal emission, the low power consumption and high reliability of wireless ECG monitoring bring challenges. In this paper, a portable, high reliability, ordinary lithium battery-powered wireless ECG monitoring system is proposed. The system uses human body communication technology to realize wireless ECG monitoring, and has the functions of ECG signal acquisition, transmission and storage and display. Compared with the traditional system, data transmission has the advantages of security, reliability, high energy efficiency and so on. Based on the principle of human body communication and channel analysis, a half-duplex capacitive coupled human communication transceiver based on human channel transmission is designed in this paper. Analog comparator and bandpass filter are used to design OOK modulation and demodulation circuit in 40MHz band. 8B/10B data coding and decoding are realized by digital circuit. Through the improved SPI serial communication protocol, the human body communication transceiver is controlled by ARM microprocessor LPC2148. At the signal recording end, the SD card file storage function based on FatFs file system is realized through the interface circuit design and embedded program design of ARM microprocessor. USB communication with personal computers and other auxiliary storage and display functions. At the same time, the dynamic display interface of ECG is designed by using Visual C on personal computer, and the received ECG signal can be observed in real time. The ECG signal in this design is acquired by the ECG acquisition module developed by Shenzhen Advanced Technology Research Institute of Chinese Academy of Sciences. Based on the existing ECG acquisition technology, the design of wireless ECG monitoring system based on human body communication technology is realized in this paper. This provides a theoretical and practical basis for the design of reliable, safe, low cost and low power portable wireless ECG monitoring system. This system integrates ECG radio transmission, storage and display, reduces the complexity of traditional ECG monitoring system, promotes the progress of ECG monitoring technology, and lays a good foundation for the research of body area network.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：R318.6;TN92

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