wireless sensor netwơrk 2 4 ghz

tổng quan về mạng cảm ứng không dây Wireless Sensor Netwơrk-WSN

Ngày tải lên : 22/11/2012, 09:13

... ĐTVT K28 42 Đồ án tốt nghiệp Hình 4 .2: Luồng kiện cho file Tcl chạy NS • NAM Visual Simulation Mô ảo NAM • Tracing and Monitoring Simulation Mô Lần vết Giám sát IV.1 .2 Các đặc điểm NS2 NS -2 thực ... 4. 4: Topo khởi tạo mạng Nguyễn Duy Thanh - Lớp ĐTVT K28 46 Đồ án tốt nghiệp Hình 4. 5: Leach chu kỳ ( node đỏ Cluster-Head) Hình 4. 6: Leach ổn định chu kỳ đầu Nguyễn Duy Thanh - Lớp ĐTVT K28 47 ... so sánh giao thức chọn đường WSN hình 2. 1 hình 2. 2 Hình 2. 1: Phân loại giao thức chọn đường WSN Nguyễn Duy Thanh - Lớp ĐTVT K28 16 Đồ án tốt nghiệp Hình 2. 2: Phân loại so sánh giao thức chọn đường...

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WIRELESS SENSOR NETWORK

Ngày tải lên : 26/04/2013, 08:37

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Wireless sensor network

Ngày tải lên : 29/06/2013, 01:27

... Environments 3 .4 Commercially Available Wireless Sensor Systems 3.1 IEEE 145 1 and Smart Sensors 3.1 IEEE 145 1 and Smart Sensors 3 .2 Transducers and Physical Transduction Principles • Mechanical Sensors ... Networks 2. 4 Network Structure and Hierarchical Networks • Hierarchical Networks WIRELESS SENSOR NETWORKS 3.1 IEEE 145 1 and Smart Sensors 3 .2 Transducers and Physical Transduction Principles 3.3 Sensors ... foremost on sensory data from the real or1d Sensory data comes from multiple sensors of different modalities in distributed locations INTRODUCTION 2. COMMUNICATION NETWORKS 2. 1 Network Topology 2. 2 Communication...

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Tài liệu A WIRELESS SENSOR NETWORK AIR POLLUTION MONITORING SYSTEM pdf

Ngày tải lên : 17/02/2014, 22:20

... We find its multiples in the form (x1, y1), (x2, y2)… • E.g., length = 20 0, multiples = (1, 20 0), (2, 100), (4, 50), (5, 40 ), (10, 20 ), (20 , 10), ( 24 , 5) • We choose the pair which will give the ... ISI-TR -20 05-603, 20 05 [ 14] I F Akyildiz, W Su, Y.Sankarasubramaniam, and E Cayirci, Wireless Sensor Networks: A Survey”, Elservier Computer Networks, Vol.38 (4) , pp 393- 42 2 , March 20 02 [15] ... August 20 04 [4] A Mainwaring, D Culler, J Polastre, R Szewczyk, and J Anderson, Wireless sensor networks for habitat monitoring”, Proceedings of the 1st ACM International workshop on Wireless sensor...

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Wireless Sensor Network Security: A Survey potx

Ngày tải lên : 05/03/2014, 21:20

... energy-constrained sensor networks, April 20 04 49 ˘ [81] S Capkun and J.-P Hubaux Secure positioning in wireless networks IEEE Journal on Selected Areas in Communications, 24 (2) :22 1 23 2, 20 06 [ 82] D Wagner ... Netherlands, 20 04 [45 ] L Lazos and R Poovendran Secure broadcast in energy-aware wireless sensor networks In IEEE International Symposium on Advances in Wireless Communications (ISWC’ 02) , 20 02 [46 ] L ... pre-distribution schemes for wireless sensor networks In Proceedings of the 2nd ACM workshop on Security of Ad hoc and Sensor Networks (SASN ’ 04) , pages 43 – 52, New York, NY, USA, 20 04 ACM Press [38] C...

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Thiết kế anten vi dải phân cực tròn cho ứng dụng WLAN dải tần 2,4 GHz pot

Ngày tải lên : 11/03/2014, 02:20

... -5 S 12 dB -10 -15 -20 -25 -30 -35 2. 1 Hình 11: 2. 2 2. 3 2. 4 2. 5 Frequency [GHz] 2. 6 2. 7 2. 8 2. 9 ết mô ph ng S 12 (S21) với có hông có he ch V anten phân cực kép cho access point WLAN 2, 4 GHz với ... phản xạ S11 S 22 simulated Measured -5 -15 -20 -25 -30 -35 -40 Frequency [GHz] Hình 6: Hệ số phản xạ S 22 S 12 simulated Measured -5 -10 -15 S 12 dB S 22 dB -10 -20 -25 -30 -35 Frequency [GHz] Hình 7: ... 1. 84 12 c 2 ae  r (1) Bán kính hiệu dụng patch tính công thức:  2h ae  a 1    a r 0.5  a   ln  2h   1.7 726       (2) Tần số cộng hưởng anten f r  2. 44 GHz Mạch in FR-4...

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WIRELESS SENSOR NETWORK SECURITY ANALYSIS pptx

Ngày tải lên : 28/03/2014, 22:20

... Networks, 20 08, (1) International Journal of Next-Generation Networks (IJNGN),Vol.1, No.1, December 20 09 [3] X Du, H Chen, "Security in Wireless Sensor Networks", IEEE Wireless Communications, 20 08 [4] ... "Negotiation-based protocols for disseminating information in wireless sensor networks," Wireless Networks, vol 8, no 2- 3, pp 169-185, 20 02 [ 14] M.-J Lin, K Marzullo, and S Masini, "Gossip versus deterministic ... routing," in IEEE Infocom 20 02, 20 02 [16] Mona Sharifnejad, Mohsen Shari, Mansoureh Ghiasabadi and Sareh Beheshti, A Survey on Wireless Sensor Networks Security, SETIT 20 07 10 ...

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wireless sensor network designs

Ngày tải lên : 03/06/2014, 01:51

... 12 13 15 17 20 23 25 27 28 28 29 29 Smart Sensor Networks 2. 1 Introduction 2. 2 Vibration Sensors 2. 3 Smart Sensor Application to Condition Based Maintenance 2. 4 Smart Transducer Networking 2. 5 ... Implementation 8.3 .4 Embedded Applications 8 .4 Embedded Operating System Energy Analysis 8.5 Summary Problems Learning Objectives 23 5 23 5 23 6 24 2 24 6 25 0 25 3 25 8 26 4 27 0 27 1 27 1 viii CONTENTS ... 7 .2. 3 Applications 7.3 Communication Security in Sensor Networks 7 .4 Summary Problems Learning Objectives Practice Problems Practice Problem Solutions 21 3 21 3 21 4 21 6 21 9 22 3 22 5 23 0 23 0 23 0 23 1...

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Wireless Sensor Networks Part 4 pot

Ngày tải lên : 20/06/2014, 05:20

... embedded sensor networks Proceedings of The IEEE, Vol 91, No 7, July 20 03, 10 02- 1 022 Tubaishat, M & Madria, S (20 03) Sensor networks: an overview IEEE Potentials, Vol 22 , No 2, April 20 03, 20 -23 Energy ... Su, W.; Sankarasubramaniam, Y & Cayirci, E (20 02) A survey on wireless sensor networks IEEE Communications Magazine, Vol 40 , No 8, August 20 02, 1 02- 1 14 Balanis, C (1997) Antenna Theory: Analysis ... Pages 27 44 Walsh M., Alavi S M M and Hayes M (20 08) On the effect of communication constraints on robust performance for a practical 8 02. 15 .4 Wireless Sensor Network Benchmark problem Proc 47 th...

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Emerging Communications for Wireless Sensor Networks Part 4 docx

Ngày tải lên : 20/06/2014, 06:20

... Amacom, ISBN 0-8 144 -7168 -4, New York Akyildiz, I F.; Su, W.; Sankarasubramaniam, Y & Cayirci, E (20 02) Wireless sensor networks: a Survey Computer Networks, Vol 38 No (20 02) , pp 393– 42 2 Al Saad, M., ... http://www.openarchitectureware.org Rafiq O & Cacciari, L (20 03) Coordination algorithm for distributed testing Journal of Supercomputing, Vol 24 , No (February 20 03), pp 20 3 -21 1, ISSN 0 920 -85 42 ScatterClipse, http://page.mi.fu-berlin.de/saad/ScatterClipse/video.htm ... International Conference on Sensor Technologies and Applications, pp 44 1 -45 0, ISBN 978-0-7695 -29 88 -2, October 20 07, Valencia, Spain, IEEE CS Press Al Saad, M.; Kamenzky, N & Schiller, J (20 08a) Visual ScatterUnit:...

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Smart Wireless Sensor Networks Part 4 docx

Ngày tải lên : 20/06/2014, 07:20

... for wireless sensor networks M L2B, D 14 =0 M L2B, D 04 =0 O BM M (m ED s) 95 0 1 12 2 24 44 8 squar e si ze ( km ^2) 896 Fig MED dependence on node density R & SR E B R M E: L2B, D 14 =0 R M E: L2B, ... E: L2B, D 04 =0 SR M B: L2B, D 14 =0 O BM SR M B: L2B, D 04 =0 1 12 2 24 44 8 squar e si ze ( km ^2) 896 Fig SRB & RE dependence on node density We also compare the performance of ML2B with maximum ... 6, no 1, 20 06, pp 35 48 J.-P Sheu, S.-C Tu, and C.-H Yu, “A distributed query protocol in wireless sensor networks,” Wireless Personal Communications, vol 41 , no .4, Jun 20 07, pp 44 9 46 4 J Wu and...

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Sustainable Wireless Sensor Networks Part 4 docx

Ngày tải lên : 20/06/2014, 07:20

... Latency (sec) Reporting Latency (sec) 40 4 x 10 7 4 35 (b) Nidle = 4 10 25 30 Nsleep 10 15 20 25 Nidle 30 35 40 45 50 (c) Nsleep = 10 10 15 20 25 30 Nsleep 35 40 45 50 (d) Nidle = Fig Comparison ... high 34 30 28 26 24 22 20 18 100 classical proposal Average energy consumed Average energy consumed 10 classical proposal 32 200 300 40 0 500 R_t 600 700 800 900 1000 0 50 (a) Varying Rt 150 20 0 ... 10 100 1 .2 0 .2 0 .4 0.6 λR 0.5 q c) BEB 0.6 1 .4 10 0.8 0.5 0 .4 0.3 0 .2 0.1 20 40 60 w 80 100 Reporting Latency Cluster Latency 0.3 0 .2 0.1 20 Reporting Latency Cluster Latency b) UB 0 .4 Reporting...

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Báo cáo hóa học: " Research Article Design and Implementation of a Generic Energy-Harvesting Framework Applied to the Evaluation of a Large-Scale Electronic Shelf-Labeling Wireless Sensor Network" pdf

Ngày tải lên : 21/06/2014, 11:20

... harvester emulation) 40 35 30 25 30 20 25 15 10 Receive 20 0 300 15 76 1 52 228 3 04 380 45 6 5 32 608 6 84 760 836 9 12 988 10 64 1 140 121 6 129 2 1368 144 4 Transmit 20 10 Samples (25 ms) Voltage (dV) ... 3B48 3B 52 3B41 3B45 3B43 3B 34 3B37 3B 42 3B46 3A28 3B49 3B53 3B50 3A31 3B51 3B 54 3B35 3B38 3A26 3A27 Controller 3A 22 3A23 3A21 3A18 3A 14 3A11 3A19 3A20 3A7 3A4 3A1 3A10 3A15 3A8 3A16 3A9 3A2 3A6 ... 3B48 3B 52 3B41 3B45 3B43 3B 34 3B37 3A28 3B49 3B50 3A26 3B53 3A27 Controller 3A31 3A 22 3A23 3A 14 3A11 3A19 3B51 3B 54 3A20 3A7 3B35 3B38 3A4 3A1 3A10 3A15 3A8 3A16 3B 42 3B46 3A21 3A18 3A9 3A2 3A6...

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Báo cáo hóa học: "Research Article Dynamic Object Tracking Tree in Wireless Sensor Network" pptx

Ngày tải lên : 21/06/2014, 17:20

... ×1 04 159 22 5 20 5 185 165 145 125 105 85 65 45 25 157 155 Overhead Adaptation cost ×1 02 153 151 149 147 145 143 11 16 21 26 31 36 41 46 51 56 61 66 71 76 81 86 91 96 Modify links With MTA 17 25 ... Journal on Wireless Communications and Networking ×1 04 Table 1: The Improvement Percentage using MTA Procedure 145 144 .5 Update cost 144 143 .5 143 1 42 . 5 1 42 141 .5 141 0.05 0.15 0 .25 0.35 0 .45 0.55 ... National Science Council of Taiwan, under Grants NSC95 -22 21-E -21 6-039, NSC9 622 21-E -21 6-010, and NSC97 -22 21-E- 25 9-036 8 EURASIP Journal on Wireless Communications and Networking References [1]...

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Báo cáo hóa học: " Research Article A Wireless Sensor Network for RF-Based Indoor Localization" pptx

Ngày tải lên : 21/06/2014, 22:20

... CC2 42 0 52. 2 mW 37.5 mW 29 .7 mW 25 .5 mW 56 .4 mW 60 μW 1.1 62 ms (measured) 128 μs Varying 20 0 ms 25 0 kbps 25 6 bits nRF24L01 33.9 mW 27 mW 22 .5 mW 21 mW 35 .4 mW 2. 7 μW 1.63 ms — — — 1 /2 Mbps 25 6 ... 1.7 1.7 3 .2 1.7 2. 6 2. 6 5.8 4. 3 4. 3 8.8 4. 6 Bounding box accuracy [m] Scenario Scenario Original Normalized Original Normalized 64 64 196 1 02 196 196 43 3 22 6 196 196 144 3 753 640 640 144 3 753 having ... [15] 1 .20 (M) Kotanen et al [9] 2. 60 (A) Roos et al [16] 1 .45 (M) CMU-TMI [11] 2. 00 (M) Approach A/N [m ]2 30 .43 58.33 87.10 20 .00 12. 39 3.58–1. 64 84. 00 326 .25 607 .20 — 72. 00 64. 00 — in Figure 21 (b)...

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Báo cáo hóa học: " Research Article An Efﬁcient Addressing Scheme and Its Routing Algorithm for a Large-Scale Wireless Sensor Network" pptx

Ngày tải lên : 21/06/2014, 23:20

... 32 64 128 25 6 5 12 1 0 24 20 48 40 96 81 92 163 84 327 68 Network size When the number of nodes equals dimension ACCS architecture # of MHN by 2D TRAACS network 12 22 38 67 120 21 4 388 7 12 1310 24 26 4 520 ... (0, 2, 1) 33 (0, 3, 2) 50 (1, 2, 1) 28 9 (1, 2, 2) 29 0 (1, 1, 1) 27 3 (2, 0, 2) 515 (1, 2, 3) 29 1 (1, 2, 0) 28 8 (1, 1, 0) 27 2 (1, 0, 3) 25 9 Coordinator (1, 2, 5) 29 3 (1, 2, 4) 29 2 Sub-router Root-router ... ··· (1, 4) 26 0 (2, 0) 5 12 0x8EE6 0xB351 (0, 5) ··· 0x317C D=1 D =2 (0, 4) (25 5, 0) 6 528 0 (25 5, 1) (25 5, 2) (25 5, 3) 6 528 1 6 528 2 6 528 03 (25 5, 4) (25 5, 5) 6 528 4 6 528 5 Coordinator Router 4. 1 Address...

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Báo cáo hóa học: " Design and Characterization of a 5.2 GHz/2.4 GHz ΣΔ Fractional-N Frequency Synthesizer for Low-Phase Noise Performance" potx

Ngày tải lên : 22/06/2014, 22:20

... given by 2 ( f ) rad2 /Hz πf (2 )2 ΣΔ = · sin 24 fr fr PN( f )[dBc/Hz] = 10 log πf (2 )2 · sin 24 fr fr 2( m−1) , 2( m−1) ( 24 ) and its z-domain representation of 2 · Ω(z) = Φ(z) − z−1 , TS (20 ) where ... 0.18 μm CMOS −115 − 92 0.8◦ rms kHz–10 MHz [ 14] 5.1–5.3 0.18 μm CMOS −110 − 92 1.5 ∼ 2 rms 10 kHz–10 MHz 2. 4, 5.1–5.3 0.5 μm BiCMOS − 120 −98 0 .4 rms, 2. 4 GHz 0.7◦ rms, 5.3 GHz 100 Hz–10 MHz This ... = 2 · Ω(z) fr − z−1 (21 ) Noting that SΩ (z) is given in terms of power, the doublesideband phase noise PSD is obtained as SΦ (z) = SΩ (z) = = (2 )2 − z−1 fr2 (2 )2 · − z−1 − z−1 fr2 12 (2 )2...

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Báo cáo hóa học: " Distributed Detection and Fusion in a Large Wireless Sensor Network of Random Size" pot

Ngày tải lên : 23/06/2014, 00:20

... p(N) 46 6 EURASIP Journal on Wireless Communications and Networking 0.0 14 0.0 12 0.01 0.008 0.006 0.0 04 0.0 02 0 20 0 40 0 600 800 1000 120 0 140 0 1600 1800 20 00 N (a) ×10−3 3 .2 p(N) 0 where N2 = max(T, ... with a large number [20 ] [21 ] [22 ] [23 ] [ 24 ] [25 ] [26 ] of sensors,” in Proc 7th IEEE International Conference on Information Fusion (ICIF ’ 04) , Stockholm, Sweden, June–July 20 04 D Li, K D Wong, ... (18), (20 ), (21 ), 47 0 EURASIP Journal on Wireless Communications and Networking 100 100 10−1 10 2 Pd Pd 10−1 10 2 10−3 10−5 10 4 10−3 10 2 10−1 10−5 100 10 4 2. 5 D(τ) 1.5 0.5 −3 2 −1 τ Figure 14: ...

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Báo cáo hóa học: " Minimum Energy Decentralized Estimation in a Wireless Sensor Network with Correlated Sensor Noises" pot

Ngày tải lên : 23/06/2014, 00:20

... 50 40 30 20 50 40 30 20 10 10 0 0 .2 0 .4 0.6 0.8 1 .2 1 .4 0 .2 0 .4 0.6 0.8 1 .2 1 .4 Normalized deviation of sensor noise variances Normalized deviation of sensor noise variances (a) (b) Figure 2: ... using (27 ) as follows: N N 2bi ci2 2bi − wi = λ i=1 i=1 N ci2 ≥ 2bi − i=1 = β , U2 (35) and we conclude that λ∗ ≤ λ On the other hand, if all bi ≥ we can write 2bi − 2bi ≤ 2bi − ≤ 2bi − 2, (36) ... them to take real nonnegative values: N w i bi i=1 N ( 24 ) ci2 β subject to ≤ 2, (2bi − 1 )2 U i=1 ci2 wi b i + λ i=1 2bi − i =1 − β U2 (25 ) At the point of optimum we must have ∂L/∂bi = for i...

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