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1、2250 英文單詞, 英文單詞,12500 英文字符 英文字符,中文 中文 4000 字文獻(xiàn)出處: 文獻(xiàn)出處:Mehta R, Sahni J, Khanna K. Internet of Things: Vision, Applications and Challenges[J]. Procedia Computer Science, 2018, 132: 1263-1269.Internet of Things: Vision, A

2、pplications and ChallengesRishika Mehta, Jyoti Sahni, Kavita KhannaAbstractInternet of Things (IoT) being a powerful integration of radio-frequency identification (RFID), sensor and wireless devices, has given a challeng

3、ing yet powerful opportunity to shape the existing systems thereby making them intelligent. Abounding applications are developed in the recent years. Millions of physical objects are expected to be connected to form a sy

4、stem creating wide distribution network inferencing meaningful deductions from raw data.This survey paper is an effort to describe IoT along with its vision, possible application domains and key challenges faced in makin

5、g IoT a reality. This paper presents current state-of-art of IoT in a systematic manner.Keywords: Internet of Things (IoT), near field communications, radio frequency identification (RFID), wireless sensor networks (WSNs

6、), sensors and Actuators;1. IntroductionToday, more than two billion people are using the Internet to send and receive the e-mails, to access the web content, to use social networking and to do a lot more activities. Wit

7、h time, a lot of people will be having access to the vast available information, taking Internet to a higher level where gadgets and smart devices will be connecting, communicating, computing and coordinating with each-o

8、ther. It is clear that, within the next few years, the Internet will grow as a huge network of networks and networked objects. Valuable information and services will always be available, making it easier to design newer

9、applications, introducing newer methods of working; newer methods of communicating; newer methods of entertainment; thus, leading to newer ways of living.In this scenario, the concept of Internet will diminish, giving ri

10、se to the new concept of connected ‘smart’ devices [1]. The IoT will shape the Internet in such a way that it will materialize machine-to-machine (M2M) learning [2]. The Internet infrastructure will exist as a strong bac

11、kbone.The restructuring will take place by making physical devices ‘smart’ thereby, making them capable of doing things on their own, thus, giving rise to ‘Internet of things.’ The IoT aims to make the use of smart tech

12、nologies by connecting things anytime to accomplish anything at any place. The IoT concept came into existence in 1998 and the term Internet of Things was introduced by Kevin Ashton in 1999 [30].IoT basically allows for

13、independent yet secure connection for the interaction of real world devices [3]. The IoT reduces physical work by automating day to day chores [4]. The objects which are connected to Internet are growing rapidly. The sma

14、rt phones embed various sensors and actuators which sense the information, perform computation on that data, and transmit the valuable data thus gathered with the help of Internet [5]. By using such network with various

15、devices embedding the sensors, we will be able to create various newer applications that will lead to convincing benefits [6].The smart objects in IoT can be identified uniquely. These devices have Radio-Frequency repres

16、entation and storage of the information that is exchanged among the objects.The three visions of IoT [8] are shown in fig 2:1. Things Oriented Vision2. Internet Oriented Vision3. Semantic Oriented VisionFig 2: Vision of

17、IoT [8]A. Things Oriented VisionIn this vision, objects are tracked by sensors and technologies using RFID [27]. Each object is uniquely identified by Electronic Product Code (EPC). The data is collected through sensors

18、and sensor based embedded system. This vision depends on RFID-based sensor networks and other sensor-based networks which integrate technologies based on RFID, sensing, computing devices and the global connectivity.B. In

19、ternet Oriented VisionThe internet-oriented vision sees the various physical devices interacting with each other. The sensor-based objects can be determined uniquely and their whereabouts can be regularly monitored. Thes

20、e smart embedded objects can be considered as microcomputers with computing resources.C. Semantic Oriented VisionThis vision states that the data collected through sensors will be huge. Thus, the collected data is proces

21、sed effectively. The raw data is processed in order to make it consistent and least redundant which is useful for better representations and interpretation.From things perspective, IoT focuses on the integration of smart

22、 devices or objects in a single architecture, where things being RFID tags, the Internet perspective gives IoT a network-oriented meaning. As IP being the worldwide accepted protocol to connect the various communicating

23、objects, it has the power to make IoT a reality.Lastly, the number of objects that will be connected through IoT will be huge in number, so, the issues related to representation, storage, interconnection, search and mana

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