wireless sensor netwworks ky thuat

... có vài loại sensor bo mạch Tùy theo ứng dụng có loại sensor riêng: sensor nhiệt độ, sensor ánh sáng, sensor độ ẩm, sensor áp suất, sensor gia tốc, sensor từ, sensor âm thanh, hay chí sensor hình ... Đặng Thị Sương - K16Đ2 Luận văn thạc sĩ Đại học Công nghệ - ĐHQGHN THUẬT NGỮ VIẾT TẮT WSN Wireless Sensor Networks TCP/IP Transmission Control Protocol/Internet Protocol ROM Read-Only Memory ... ĐẶNG THỊ SƯƠNG NGHIÊN CỨU CÁC GIẢI PHÁP ĐỂ SỬ DỤNG TCP/IP CHO MẠNG CẢM BIẾN KHÔNG DÂY (WIRELESS SENSOR NETWORKS) Ngành: Công nghệ Điện tử - Viễn thông Chuyên ngành: Kỹ thuật Điện tử Mã số:...

Ngày tải lên: 11/07/2015, 10:17

... ð i H c Bách Khoa TPHCM B Môn Vi n Thông Wireless Sensor Networks K Thu t,Giao Th c ng D ng ð i H c Bách Khoa TPHCM B Môn Vi n Thông Wireless Sensor Networks K Thu t,Giao Th c ng D ng M CL ... ð i H c Bách Khoa TPHCM B Môn Vi n Thông Wireless Sensor Networks K Thu t,Giao Th c ng D ng Chương 5: GIAO TH C ðI U KHI N TRUY C P TRONG M NG WIRELESS SENSOR NETWORKS 5.1 Mô hình giao th c cho ... ð i H c Bách Khoa TPHCM B Môn Vi n Thông Wireless Sensor Networks K Thu t,Giao Th c ng D ng Chương GIAO TH C ðI U KHI N TRUY C P TRONG M NG WIRELESS SENSOR NETWORKS M ng WSNs ñư c xây d ng v...

Ngày tải lên: 25/04/2013, 19:19

... preamble mac protocol for duty-cycled wireless sensor networks In SenSys, 2006 [4] O Chipara, C Lu, and J Stankovic Dynamic conflict-free query scheduling for wireless sensor networks In ICNP, 2006 [5] ... media access for wireless sensor networks In SenSys, 2004 [13] V Rajendran, K Obraczka, and J Garcia-Luna-Aceves Energy-efficient, collision-free medium access control for wireless sensor networks ... Estrin A wireless sensor network for structural monitoring In SenSys, 2004 [24] W Ye, J Heidemann, and D Estrin Medium access control with coordinated, adaptive sleeping for wireless sensor networks...

Ngày tải lên: 01/09/2013, 15:23

... ð i H c Bách Khoa TPHCM B Môn Vi n Thông Wireless Sensor Networks K Thu t,Giao Th c ng D ng Chương GIAO TH C ðI U KHI N TRUY C P TRONG M NG WIRELESS SENSOR NETWORKS M ng WSNs ñư c xây d ng v ... cách phù h p v i ñòi h i v ñ c ñi m c a ng d ng 42 ð i H c Bách Khoa TPHCM B Môn Vi n Thông Wireless Sensor Networks K Thu t,Giao Th c ng D ng Hình 5.1: Mô hình tham kh o OSI c u trúc l p liên ... kênh truy n Trong s d ng thông tin n i t i node 43 ð i H c Bách Khoa TPHCM B Môn Vi n Thông Wireless Sensor Networks K Thu t,Giao Th c ng D ng có kh gi m overhead ñòi h i ñ k t h p node ñang tranh...

Ngày tải lên: 21/01/2014, 04:20

... the sensors are used for or where it is situated The types of topologies used for sensor networks include star, mesh, star-mesh etc [2] In Wireless sensor networks there are two kinds of wireless ... power, is a necessity [10] In a wireless sensor network, three courses of actions can occur: - A sensor node is compromised - A base station is compromised - Sensor nodes and base stations are ... REFERENCES [1] Saraogi, M (n.d.) Security in wireless sensor networks University of Tennessee, [2] Burgner, D E., & Wahsheh, L A (2011) Security of wireless sensor networks Eighth International Conference...

Ngày tải lên: 05/03/2014, 23:20

... Traditional sensor network wireless Traditional sensor network wireless SNEP & µTESLA ISSN: 2231-2803 Information Spooling Network Architecture Traditional wireless sensor network Hybrid (mainly wireless ... Information Spoofing Hello Flood Attack Traditional sensor network wireless or Data Traditional sensor network wireless Attack Data Traditional sensor network wireless or Random Kay Predistribution Data ... information spoofing, Attacks in information in Transit Traditional sensor network wireless REWARD Blackhole attacks Traditional sensor network wireless Tiny Sec Data and Information spoofing, Message Replay...

Ngày tải lên: 05/03/2014, 23:20

... AKAN AND AKYILDIZ: EVENT-TO-SINK RELIABLE TRANSPORT IN WIRELESS SENSOR NETWORKS 1011 Fig 10 Multiple event occurrences in the same wireless sensor field (a) The flows generated by two events, i.e., ... at the sensor nodes which perform routing can be stated as follows: 1) A sensor node keeps the event-list, i.e., the list of IDs of the events it serves as a router node in the wireless sensor ... Section IV AKAN AND AKYILDIZ: EVENT-TO-SINK RELIABLE TRANSPORT IN WIRELESS SENSOR NETWORKS can accommodate the scenarios where multiple events occur simultaneously in the sensor field On the other...

Ngày tải lên: 16/03/2014, 19:20

... environment uniformly random We use three types of sensors(SensorType1, SensorType2 and SensorType3) with equal quantities In each experiment a sensor field is generatedwith predefined number of ... of available sensor types in each cluster The last challenge is the scalability and dynamic nature of large wireless sensor networks Considering a clusterednetwork, various types of sensor nodes ... heterogeneous sensornetworks,” Ad Hoc and Sensor Wireless Networks (Accepted) [26] H TabatabaeeMalazi, K Zamanifar, A Pruteanu, and S Dulman, “Gossip-based density estimation in dynamic heterogeneous sensornetworks,”...

Ngày tải lên: 30/03/2014, 16:20

... the sink Typically a wireless sensor network contains hundreds of thousands of sensor nodes The sensor nodes can communicate among themselves using radio signals A wireless sensor node is equipped ... considerably and all these are changing very rapidly Figure A typical Wireless Sensor Network Applications of wireless sensor network Wireless sensor networks have gained considerable popularity due to ... time, the research on wireless sensor networks have considered homogeneous sensor nodes But nowadays researchers have focused on heterogeneous sensor networks where the sensor nodes are unlike...

Ngày tải lên: 30/03/2014, 20:20

... which uses a sensor node with SOM implementation on top of a group of sensor nodes with HN implementation We call the group of sensor nodes sensor node cluster” and the particular sensor node ... “The design space of wireless sensor neto works,” IEEE Wireless Comm., vol 11, no 6, pp 54–61, Dec 2004 [2] I F Akyildiz, W Su, Y Sankarasubramaniam, and E Cayirci, “A survey on sensor networks,” ... we used Telos sensor nodes which provide an MHz microcontroller with 10 kB RAM and 48 kB Flash [14] Each node is equipped with a temperature sensor, humidity sensor and two light sensors which...

Ngày tải lên: 28/04/2014, 10:02

... in wireless sensor networks Elsevier Ad Hoc Netw 3, 3, 325–349 AKYILDIZ, I F AND KASIMOGLU, I H 2004 Wireless sensor and actor networks: Research challenges Elsevier Ad Hoc Netw 2, 351–367 AKYILDIZ, ... coverage in wireless sensor networks In Proceedings of the 24th IEEE Conference on Computer Communications (INFOCOM) CARDEI, M AND WU, J 2004 Coverage in wireless sensor networks In Handbook of Sensor ... might be ordinary ACM Transactions on Sensor Networks, Vol 5, No 1, Article 5, Publication date: February 2009 On the Lifetime of Wireless Sensor Networks • 5:17 sensor nodes acting as base stations...

Ngày tải lên: 28/04/2014, 13:38

... irregular wireless sensor networks In Proceedings of the 4th European Workshop on Sensor Networks (EWSN) Delft, The Netherlands IEEE DUARTE-MELO, E J AND LIU, M 2003 Data-gathering wireless sensor ... of Wireless Sensor Networks (AlgoSensors’04) Turku, Finland Springer-Verlag, 71–84 ESTRIN, D., HEIDEMANN, J., GOVINDAN, R., AND KUMAR, S 1999 Next century challenges: scalable coordination in sensor ... Directed diffusion for wireless sensor networking IEEE/ACM Trans Netw 11, 1, 2–16 KRISHNAMACHARI, B., ESTRIN, D., AND WICKER, S 2002 The impact of data aggregation in wireless sensor networks In...

Ngày tải lên: 28/04/2014, 13:41

... irregular wireless sensor networks In Proceedings of the 4th European Workshop on Sensor Networks (EWSN) Delft, The Netherlands IEEE DUARTE-MELO, E J AND LIU, M 2003 Data-gathering wireless sensor ... of Wireless Sensor Networks (AlgoSensors’04) Turku, Finland Springer-Verlag, 71–84 ESTRIN, D., HEIDEMANN, J., GOVINDAN, R., AND KUMAR, S 1999 Next century challenges: scalable coordination in sensor ... Directed diffusion for wireless sensor networking IEEE/ACM Trans Netw 11, 1, 2–16 KRISHNAMACHARI, B., ESTRIN, D., AND WICKER, S 2002 The impact of data aggregation in wireless sensor networks In...

Ngày tải lên: 28/04/2014, 13:41

... www.it-ebooks.info Building Wireless Sensor Networks www.it-ebooks.info www.it-ebooks.info Building Wireless Sensor Networks Robert Faludi Beijing • Cambridge • Farnham • Köln • Sebastopol • Tokyo www.it-ebooks.info ... Lighting Sensor Basic Romantic Lighting Sensor Prepare the Sensor Board Prepare the Base Station Romantic Lighting Sensor with Feedback API Ahead 88 89 90 93 93 93 97 99 104 109 API and a Sensor ... www.it-ebooks.info www.it-ebooks.info Preface Building Wireless Sensor Networks is an essential guide for anyone interested in wireless communications for sensor networks, home networking, or device hacking...

Ngày tải lên: 08/05/2014, 12:09

... NÚT SENSOR Do nút sensor có cấu tạo tương đối giống nên trình bày tổng quan Có loại nút sensor mà đề tài thực chế tạo: sensor phát người, sensor đo độ sáng sensor đo nhiệt độ Bo mạch tích hợp sensor ... góc độ cấu trúc mạng sensor không dây, từ chức phần tử ta thấy nút TouchLight, sensor phát người, sensor độ sáng, nhiệt độ coi nút sensor (sensor node) Còn nút mLCP-8 coi nút sensor/ actuator Dưới ... người PIR b) Sensor đo độ sáng Sensor đo độ sáng: có hai loại: sensor đo độ rọi đo độ chói Các sensor cho phép điều chỉnh gồm độ nhạy, đặt ngưỡng tác động Hình 7: Sensor đo độ sáng Các sensor cảm...

Ngày tải lên: 15/05/2014, 00:29

... node focus Đồ án Localization in the wireless sensor networks WSNs mạng cảm biến kết nối node cảm biến sóng vô tuyến 1.1.1 CÔNG NGHỆ SENSOR NETWORK Trong mạng sensor network, cảm biến xem phần quan ... thương mại, hỗ trỡ hiệu cho trình định Đồ án Localization in the wireless sensor networks 10 Đồ án Localization in the wireless sensor networks CHƯƠNG II ỨNG DỤNG MẠNG CẢM BIẾN KHÔNG DÂY 2.1 PHÁT ... TRONG ĐỊNH VỊ 17 Đồ án Localization in the wireless sensor networks Hình 3.1 Định nghĩa loại nút tọa độ tương đối 18 Đồ án Localization in the wireless sensor networks Để có mô tả rõ ràng ,hình...

Ngày tải lên: 27/05/2014, 11:41

... WIRELESS SENSOR NETWORKS Technology, Protocols, and Applications KAZEM SOHRABY DANIEL MINOLI TAIEB ZNATI WIRELESS SENSOR NETWORKS WIRELESS SENSOR NETWORKS Technology, ... magnetic field sensors, seismic sensors, radio-wave frequency sensors, electrooptic and infrared sensors, laser radars, and location and navigation sensors Advances in the areas of sensor design, ... infrastructure, as microsensors A sensor network supports any type of generic sensor; more narrowly, networked microsensors are a subset of the general family of sensor networks [1.13] Microsensors with...

Ngày tải lên: 28/05/2014, 14:58

... maximum likelihood estimation, fading channels, wireless sensor network 1 Introduction Wireless sensor networks (WSNs) consist of a number of sensors deployed in a field to collect information, ... kind of WSNs that consists of N sensors and a FC to measure an unknown deterministic parameter θ, where there are no inter -sensor communications among the sensors The sensors process their observations ... estimation for wireless sensor networks— part I: Gaussian case IEEE Trans Signal Process 54(3), 1131–1143 (2006) A Ribeiro, GB Giannakis, Bandwidth-constrained distributed estimation for wireless sensor...

Ngày tải lên: 18/06/2014, 22:20