Study Of Theoretical Basis Of EIMN Sensor Network And Technique Of Wireless Remote Image Monitoring System

Under the background of global informatization, sensors, which exist in the frontend of information stream, are taking place profound changes, as being-wireless,networking, synthesizing, and micromation have become four development trends ofsensor technologies. Reflecting these trends, EIMN (Embedded wIreless MicrosensorNetwrok) can be applied to many domains, such as environmental & ecologicalmonitoring, industrial process monitoring, traffic control & vehicle scheduling, securitysurveillance, and military reconnaissance. EIMNs have received high-level concernsfrom industrial community, academia, security departments and military departments ofmany countries. This thesis was funded by the subject "Study of Relevant Issues ofMicrometer-Scale RF Components"of the Major State Basic Research DevelopmentProgram ("973"Program) "Study of Integrated Micro-Optical-Electronic-MechanicalSystem" (Subject No. G1999033105). Aiming at theoretical basis of EIMNs andtechniques of wireless remote image monitoring systems, this thesis originally intendedto propose a novel architecture of EIMNs, explore topology theories and routingalgorithms of EIMN's subnetworks, establish a new market-oriented wireless remoteimage monitoring system, and conduct experimental researches of key techniques.Therefore, this thesis possesses important theory significance and practical value. A new architecture of EIMNs, called EIMN's new architecture in this thesis, hasbeen proposed. EIMN's new architecture is based on Bluetooth Scatternet and PublicMobile Communication Network (PMCN), and is mainly used for local areaenvironmental monitoring and security surveillance. Studies has been guided to EIMNs'basic elements including hierarchical network structure, Bluetooth Scatternet, basicdevices, operation system and access means to Internet of sensor nodes, etc. EIMN'snew architecture has following characteristics: full-range (both short-range andlong-range) wireless connectivity to achieve so called "combining triple networks intoone", multi-hop Ad-Hoc self-organizing of the cluster-hierarchy Bluetooth Scatternet,multimedia, capability of positioning, multiple accesses to Internet, etc. At the sametime, the feasibility of EIMN's new architecture is relatively apparent. Topology models and routing algorithms of the Bluetooth Scatternet are theoreticaltopics of EIMN's new architecture. Algorithms of traditional Ad-Hoc wireless networksand wireless sensor networks have been investigated, and it can be found that these III英文摘要algorithms have some limitations to the Bluetooth Scatternet. Originating from topologytheories of Steiner Minimal Tree (SMT) and Small-World Network (SWN), SMT statictopology model and SWN dynamic topology model of the Bluetooth Scatternet havebeen proposed; overall performance of the Bluetooth Scatternet can be enhanced byintroducing several extra nodes or moving several nodes internally. Network formationprotocol and packet format associated with routes of the Bluetooth Scatternet have alsobeen studied. Bluetooth sensor node (BSN) is the most basic device of EIMN's new architecture.Two types of embedded structures of BSN have been presented; principles of hardwareplatform and software platform have been analyzed; problem of integration ofRF-MEMS (Radio Frequency Micro-Electro-Mechanical-System) antenna withBluetooth hardware for BSN has been discussed. Principle of BSN's RF networkinterface has been analyzed, and prototype of Bluetooth Host Control Interface has alsobeen developed. Directed towards image surveillance and positioning & tracing applications ofEIMN's new architecture, a WRIM-GIRS (embedded Wireless network Remote ImageMonitoring and GPS Information Receiving System) has been researched systematicallyand deeply. Research works consist of system design and key techniques researches ofWRIM-GIRS and development and experiment of WRIM-GIRS prototype.