Bluetooth Based Smart Sensor Networks

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  • Topic: Wireless sensor network, Sensor, Sensor node
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  • Published : June 30, 2011
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Sensor Network Architecture
Jessica Feng, Farinaz Koushanfar*, and Miodrag Potkonjak
Computer Science Department, University of California, Los Angeles * Electrical Engineering and Computer Science Department, University of California, Berkeley {jessicaf, miodrag}@cs.ucla.edu; {farinaz}@eecs.berkeley.edu

TABLE OF CONTENTS

1. OVERVIEW 2. MOTIVATION AND OBJECTIVES 3. SNs – GLOBAL VIEW AND REQUIREMENTS 4. INDIVIDUAL COMPONENTS OF SN NODES PROCESSOR STORAGE POWER SUPPLY SENSORS AND/OR ACTUAT ORS RADIO 5. SENSOR NETWORK NODE BERKELEY MOTE NODE UCLA MEDUSA MK-2 NODE BWRC PICONODE LIGHT COMPASS NODE 6. WIRELESS SNs AS EMBEDDED SYSTEMS 7. SUMMARY 8. REFERENCE

4.1 4.2 4.3 4.4 4.5

5.1 5.2 5.3 5.4

ACKNOWLEDGEMENT This material is based upon work supported in part by the Nati nal Science Foundation o under Grant No. ANI-0085773 and NSF CENS Grant

1. OVERVIEW
Emergence of the concept of multihop ad-hoc wireless networks, low power electronics, low power short-range wireless communication radios, and intelligent sensors are considered as the major technological enablers for the deployment of sensor networks (SNs). Our goal in this survey is to identify the key architectural and design issues related to sensor networks, critically evaluate the proposed solutions, and outline the m challenging research ost directions. The evaluation has three levels of abstraction: individual components on SN nodes (processor, communication, storage, sensors and/or actuators, and power supply), node level, and distributed networked system level. Special emphasis is placed on architecture, system software, and on challenges related to the usage of new types of components in networked systems. The evaluation process is guided by the anticipated technology trends, the current and the future applications. The main conclusion of the analysis is that the architectural and synthesis emphasis will be shifted from computation and communication components to sensors and actuators, and different types of sensors and applications that require distinctly different architectures at all three levels of abstraction.

2. MOTIVATION AND OBJECTIVES
Embedded wireless sensor networks (SNs) are systems consisting of a large number of nodes each equipped with certain amount of computational, communication, storage, sensing, a often actuation resources [Est99]. SNs aim nd to provide an efficient and effective connection between the physical and computational worlds. Therefore, SNs are widely considered as the new frontier for the Internet. Furthermore, they may potentially have high economic impact in many fields including military, education, monitoring, retail, and science. At the same time, SNs propose numerous new research and development challenges, including the need for the next generation low power, low cost, small size, error and fault resiliency, flexibility, conceptually new security and privacy mechanisms, and new types of input/output (I/O) operations. However, before any of these challenges can be properly addressed the sensor network must be in place: the network h to be designed and implemented, and there has to exist flexible as mechanisms and the means for their efficient and convenient use. In addition to algorithms, hardware and software architecture will significantly impact the effectiveness of SNs. Furthermore, SN design methodologies will have an important impact on the cost and performance of SNs. The third aspect with a major potential impact is the modeling techniques for SN, but they are out of the scope of this survey. Comprehensive surveys on sensor networks include [Est99, Pot00, Aky02].

Our overall strategic goal is to summarize what is currently the state -of-the-art with respect to architecture and synthesis techniques for sensor networks and to provide a starting point and impetus for research and d evelopment of new architectures and synthesis tools for sensor networks. More specifically, the emphasis is on:

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