嵌入式LINUX遠程家庭監(jiān)護系統(tǒng)的設計
發(fā)布時間：2018-11-10 09:47
【摘要】：中國已快速進入老齡化階段,需要護理的老人越來越多與當前醫(yī)療資源不足且分布不均之間的矛盾日益凸顯。本文從經(jīng)濟可持續(xù)發(fā)展的角度出發(fā),基于嵌入式電子、網(wǎng)絡通信、傳感器信息融合技術設計了一種“家庭—網(wǎng)絡—醫(yī)生”模式的遠程家庭醫(yī)療監(jiān)護系統(tǒng),把醫(yī)院傳統(tǒng)護理監(jiān)護通過Internet嫁接到家庭環(huán)境中,能夠很好的解決老人日常護理問題,實現(xiàn)醫(yī)院護理功能的向外延伸。本文詳細描述了嵌入式遠程家庭監(jiān)護終端軟件體系和硬件結構總體設計：硬件基礎以ARM920T為核心處理器,SAMSUNG公司設計的32位微控制器S3C2440為核心,通過外接傳感器DHT91、USB接口型攝像頭、語音輸入輸出設備等外圍器件組成系統(tǒng)硬件；軟件基礎監(jiān)護終端以Linux2.6為平臺研發(fā),監(jiān)護中心以VC++MFC為基礎采用多線程進行軟件設計。論文著重對嵌入式遠程監(jiān)護系統(tǒng)的軟件部分展開了研究與開發(fā),系統(tǒng)的軟件設計主要分為三大模塊： 溫濕度模塊：完成了DHT91驅動程序、監(jiān)護終端應用程序設計和監(jiān)護中心數(shù)據(jù)接收與參數(shù)信息動態(tài)顯示設計。DHT91驅動被封裝成字符型驅動,因內(nèi)核編譯時沒有開啟浮點運算支持,溫濕度信息的數(shù)據(jù)補償放在應用程序中完成。監(jiān)護中心則采用CDC::Polyline(LPPOINT1pPoints, int nCount)函數(shù)繪制畫出數(shù)組中溫濕度數(shù)據(jù),數(shù)據(jù)傳輸采用TCP/IP協(xié)議。 視頻模塊程序設計：完成了USB攝像頭驅動的移植、V4L2監(jiān)護終端視頻現(xiàn)場采集和監(jiān)護中心視頻顯示設計。視頻編碼庫選用T.264,攝像頭輸出JPEG圖像,而T.264編碼接口支持YUV4：2：0格式,系統(tǒng)首先使用JPEGLIB編碼庫將圖片解碼為RGB數(shù)據(jù),后轉化為YUV數(shù)據(jù)并以4：2：0格式采樣,最終將得到的數(shù)據(jù)T.264編碼。監(jiān)護中心工作與其相反,先將T.264碼流解碼,后JPEGLIB編碼為JPEG圖片,最終利用IStream和OleLoadPicture0函數(shù)加載,IPicture接口的Render0函數(shù)顯示。 音頻模塊程序設計：音頻模塊實現(xiàn)了雙方的語音交互功能。首先進行了聲卡的移植工作,之后利用聲卡驅動提供的/DSP文件接口實現(xiàn)了監(jiān)護終端的錄音和回放設計。監(jiān)護中心則利用了WINDOWS提供的低層音頻函數(shù)完全的接管音頻設備并實現(xiàn)的監(jiān)護中心語音部分的設計。 本文研究的遠程監(jiān)護系統(tǒng)具有可移植性強、系統(tǒng)設計人性化、靈活性強等優(yōu)點,同時具有豐富的客戶端軟件資源,可以數(shù)據(jù)保存、視頻錄制、截圖、錄音、閾值報警等多種功能,能完善的幫助人們解決老人的家庭護理問題。
[Abstract]:China has rapidly entered the aging stage, the increasing number of elderly people in need of care and the current lack of medical resources and uneven distribution of increasingly prominent contradiction. Based on the technology of embedded electronics, network communication and sensor information fusion, this paper designs a kind of remote family medical monitoring system based on the model of "home, network and doctor" from the angle of sustainable economic development. The traditional nursing care in hospital can be grafted into the family environment through Internet, which can solve the daily nursing problems of the elderly and realize the outward extension of the nursing function of the hospital. In this paper, the software architecture and hardware architecture of embedded remote home monitoring terminal are described in detail. The hardware is based on ARM920T as the core processor, and the 32-bit microcontroller S3C2440 designed by SAMSUNG as the core. The hardware is based on the external sensor DHT91,. The hardware of the system is composed of USB interface camera, voice input and output device and other peripheral devices. The software base monitoring terminal is developed on the platform of Linux2.6, and the monitoring center is designed by multi-thread based on VC MFC. This paper focuses on the research and development of the software of embedded remote monitoring system. The software design of the system is mainly divided into three modules: temperature and humidity module: the DHT91 driver is completed. Monitor terminal application program design and monitor center data reception and parameter information dynamic display design. DHT91 driver is encapsulated into a character drive, because the kernel compilation does not turn on floating point operation support, Data compensation for temperature and humidity information is done in the application. CDC::Polyline (LPPOINT1pPoints, int nCount) function) is used to draw the temperature and humidity data in the array, and TCP/IP protocol is used to transmit the data. Video module program design: completed USB camera driven transplant, V4L2 monitoring terminal video scene acquisition and monitoring center video display design. The video coding library selects T.264, the camera outputs the JPEG image, and the T.264 coding interface supports the YUV4:2:0 format. The system first uses the JPEGLIB coding library to decode the picture into RGB data, and then converts the picture to YUV data and samples it in 4:2:0 format. The data will eventually be T. 264 encoded. On the contrary, T.264 code stream is decoded, then JPEGLIB is encoded into JPEG picture. Finally, the IStream and OleLoadPicture0 functions are used to load, and the Render0 function of IPicture interface is displayed. Audio module program design: audio module to achieve the two sides of the voice interaction function. Firstly, the sound card is transplanted, and then the recording and playback design of the monitoring terminal is realized by using the / DSP file interface provided by the sound card driver. The monitoring center uses the lower level audio function provided by WINDOWS to completely take over the audio equipment and realize the design of the voice part of the monitoring center. The remote monitoring system studied in this paper has the advantages of portability, humanization of system design, flexibility and so on. At the same time, it has abundant client software resources, which can save data, record video, capture pictures, record, etc. Threshold alarm and other functions can help people to solve the problem of home care for the elderly.
【學位授予單位】：南昌大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TP368.1;TP277
本文編號：2322094
[Abstract]:China has rapidly entered the aging stage, the increasing number of elderly people in need of care and the current lack of medical resources and uneven distribution of increasingly prominent contradiction. Based on the technology of embedded electronics, network communication and sensor information fusion, this paper designs a kind of remote family medical monitoring system based on the model of "home, network and doctor" from the angle of sustainable economic development. The traditional nursing care in hospital can be grafted into the family environment through Internet, which can solve the daily nursing problems of the elderly and realize the outward extension of the nursing function of the hospital. In this paper, the software architecture and hardware architecture of embedded remote home monitoring terminal are described in detail. The hardware is based on ARM920T as the core processor, and the 32-bit microcontroller S3C2440 designed by SAMSUNG as the core. The hardware is based on the external sensor DHT91,. The hardware of the system is composed of USB interface camera, voice input and output device and other peripheral devices. The software base monitoring terminal is developed on the platform of Linux2.6, and the monitoring center is designed by multi-thread based on VC MFC. This paper focuses on the research and development of the software of embedded remote monitoring system. The software design of the system is mainly divided into three modules: temperature and humidity module: the DHT91 driver is completed. Monitor terminal application program design and monitor center data reception and parameter information dynamic display design. DHT91 driver is encapsulated into a character drive, because the kernel compilation does not turn on floating point operation support, Data compensation for temperature and humidity information is done in the application. CDC::Polyline (LPPOINT1pPoints, int nCount) function) is used to draw the temperature and humidity data in the array, and TCP/IP protocol is used to transmit the data. Video module program design: completed USB camera driven transplant, V4L2 monitoring terminal video scene acquisition and monitoring center video display design. The video coding library selects T.264, the camera outputs the JPEG image, and the T.264 coding interface supports the YUV4:2:0 format. The system first uses the JPEGLIB coding library to decode the picture into RGB data, and then converts the picture to YUV data and samples it in 4:2:0 format. The data will eventually be T. 264 encoded. On the contrary, T.264 code stream is decoded, then JPEGLIB is encoded into JPEG picture. Finally, the IStream and OleLoadPicture0 functions are used to load, and the Render0 function of IPicture interface is displayed. Audio module program design: audio module to achieve the two sides of the voice interaction function. Firstly, the sound card is transplanted, and then the recording and playback design of the monitoring terminal is realized by using the / DSP file interface provided by the sound card driver. The monitoring center uses the lower level audio function provided by WINDOWS to completely take over the audio equipment and realize the design of the voice part of the monitoring center. The remote monitoring system studied in this paper has the advantages of portability, humanization of system design, flexibility and so on. At the same time, it has abundant client software resources, which can save data, record video, capture pictures, record, etc. Threshold alarm and other functions can help people to solve the problem of home care for the elderly.
【學位授予單位】：南昌大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TP368.1;TP277
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