基于Arduino的物聯(lián)網接入技術的研究
發(fā)布時間：2018-09-18 15:21
【摘要】：近些年,各個國家政府都相繼出臺了促進物聯(lián)網發(fā)展的策略,越來越多的企業(yè)、研究機構也都給予了足夠的重視,投入了極高的熱情。物聯(lián)網接入技術作為實現(xiàn)將感知網絡統(tǒng)一互聯(lián)到公共網絡的關鍵技術,在物聯(lián)網中扮演著極其重要的角色。然而,由于初期缺乏統(tǒng)一的標準與規(guī)范,開發(fā)者往往針對具體的應用需求來設計物聯(lián)網接入系統(tǒng),一旦應用環(huán)境發(fā)生改變,系統(tǒng)便需要重新開發(fā),造成了極大的資源浪費,如何實現(xiàn)對不同感知設備的接入,是物聯(lián)網技術應用的關鍵問題之一。并且由于多媒體技術的快速發(fā)展,實現(xiàn)視頻數(shù)據的接入可以使物聯(lián)網應用領域更加廣泛,對推動各行業(yè)發(fā)展具有重要意義。本文從實際應用角度出發(fā),結合時下較熱的Arduino開源硬件技術,從嵌入式系統(tǒng)、數(shù)據采集技術、數(shù)據存儲技術和數(shù)據傳輸技術等方面對物聯(lián)網接入技術進行了研究,實現(xiàn)了可以接入視頻數(shù)據的物聯(lián)網接入原型。具體完成的工作和成果如下:首先通過分析物聯(lián)網接入需求,對物聯(lián)網接入系統(tǒng)進行了模塊劃分,論述了其中涉及的接入技術;并通過對Arduino技術的研究,給出了系統(tǒng)實現(xiàn)方案,搭建了系統(tǒng)開發(fā)環(huán)境。其次對數(shù)據采集存儲技術進行重點研究,論述了利用V4L2技術實現(xiàn)視頻數(shù)據采集的方法;并通過分析Arduino標準庫,論述了利用Arduino相關技術實現(xiàn)傳感器數(shù)據采集和存儲的方法。然后通過研究相應傳輸協(xié)議,論述了使用HTTP超文本傳輸協(xié)議和Yeelink物聯(lián)網云平臺傳輸傳感器數(shù)據的方法;通過分析流媒體傳輸協(xié)議RTP/RTCP,對RTP封包策略進行了研究,論述了使用Arduino傳輸視頻數(shù)據的方法,并通過對NAL單元進行分片處理來加強視頻數(shù)據傳輸?shù)姆�(wěn)定性。最后為了對基于Arduino的物聯(lián)網接入技術進行驗證,使用JRTPLIB接收RTP數(shù)據,FFmpeg視頻解碼,SDL顯示幀圖像,完成了視頻接收端軟件的設計與實現(xiàn),搭建了測試環(huán)境,對系統(tǒng)原型各功能進行了測試。測試結果表明,該物聯(lián)網接入原型基本符合設計要求,且其具有較高的重用性、靈活性和可擴展性,便于其他的開發(fā)愛好者進行二次開發(fā),可以降低開發(fā)成本,減少開發(fā)周期,具有實際應用價值。
[Abstract]:In recent years, the governments of various countries have issued the strategy to promote the development of the Internet of things. More and more enterprises and research institutions have also paid enough attention to it and invested a great deal of enthusiasm. Internet of things (IoT) access technology, as a key technology to realize the unified interconnection of perceptual networks to public networks, plays an extremely important role in the Internet of things. However, due to the lack of uniform standards and specifications in the initial stage, developers often design the Internet of things access system according to specific application requirements. Once the application environment changes, the system needs to be redeveloped, resulting in a great waste of resources. How to access different sensing devices is one of the key problems in the application of Internet of things technology. Because of the rapid development of multimedia technology, the realization of video data access can make the Internet of things application more extensive, which is of great significance to promote the development of various industries. In this paper, the Internet of things access technology is studied from the aspects of embedded system, data acquisition technology, data storage technology and data transmission technology, combined with the popular Arduino open source hardware technology from the point of view of practical application. The Internet of things (IoT) access prototype, which can access video data, is implemented. The specific work and results are as follows: firstly, by analyzing the access requirements of the Internet of things, the modules of the Internet of things access system are divided, and the related access technologies are discussed, and the implementation scheme of the system is given through the research of the Arduino technology. The system development environment is built. Secondly, this paper focuses on data acquisition and storage technology, discusses the method of video data acquisition using V4L2 technology, and discusses the method of realizing sensor data acquisition and storage by using Arduino technology through analyzing Arduino standard library. Then, by studying the corresponding transmission protocols, this paper discusses the method of using HTTP hypertext transmission protocol and Yeelink cloud platform to transmit sensor data, and studies the RTP packet strategy by analyzing the streaming media transmission protocol RTP/RTCP,. This paper discusses the method of using Arduino to transmit video data, and strengthens the stability of video data transmission by slicing the NAL unit. Finally, in order to verify the Internet of things access technology based on Arduino, JRTPLIB is used to receive RTP data and FFmpeg video decoder to display the frame image. The software design and implementation of the video receiver is completed, and the test environment is built. The functions of the system prototype are tested. The test results show that the Internet of things access prototype basically conforms to the design requirements, and it has high reusability, flexibility and expansibility. It is convenient for other development enthusiasts to carry out secondary development, and can reduce the development cost and development cycle. It has practical application value.
【學位授予單位】：北京工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TP391.44;TN929.5
，
本文編號：2248321
[Abstract]:In recent years, the governments of various countries have issued the strategy to promote the development of the Internet of things. More and more enterprises and research institutions have also paid enough attention to it and invested a great deal of enthusiasm. Internet of things (IoT) access technology, as a key technology to realize the unified interconnection of perceptual networks to public networks, plays an extremely important role in the Internet of things. However, due to the lack of uniform standards and specifications in the initial stage, developers often design the Internet of things access system according to specific application requirements. Once the application environment changes, the system needs to be redeveloped, resulting in a great waste of resources. How to access different sensing devices is one of the key problems in the application of Internet of things technology. Because of the rapid development of multimedia technology, the realization of video data access can make the Internet of things application more extensive, which is of great significance to promote the development of various industries. In this paper, the Internet of things access technology is studied from the aspects of embedded system, data acquisition technology, data storage technology and data transmission technology, combined with the popular Arduino open source hardware technology from the point of view of practical application. The Internet of things (IoT) access prototype, which can access video data, is implemented. The specific work and results are as follows: firstly, by analyzing the access requirements of the Internet of things, the modules of the Internet of things access system are divided, and the related access technologies are discussed, and the implementation scheme of the system is given through the research of the Arduino technology. The system development environment is built. Secondly, this paper focuses on data acquisition and storage technology, discusses the method of video data acquisition using V4L2 technology, and discusses the method of realizing sensor data acquisition and storage by using Arduino technology through analyzing Arduino standard library. Then, by studying the corresponding transmission protocols, this paper discusses the method of using HTTP hypertext transmission protocol and Yeelink cloud platform to transmit sensor data, and studies the RTP packet strategy by analyzing the streaming media transmission protocol RTP/RTCP,. This paper discusses the method of using Arduino to transmit video data, and strengthens the stability of video data transmission by slicing the NAL unit. Finally, in order to verify the Internet of things access technology based on Arduino, JRTPLIB is used to receive RTP data and FFmpeg video decoder to display the frame image. The software design and implementation of the video receiver is completed, and the test environment is built. The functions of the system prototype are tested. The test results show that the Internet of things access prototype basically conforms to the design requirements, and it has high reusability, flexibility and expansibility. It is convenient for other development enthusiasts to carry out secondary development, and can reduce the development cost and development cycle. It has practical application value.
【學位授予單位】：北京工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TP391.44;TN929.5
，
本文編號：2248321
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