EMMON - EMbedded MONitoring

Despite the steady increase in experimental deployments, most of research work on WSNs has focused only on communication protocols and algorithms, with a clear lack of effective, feasible and usable system architectures, integrated in a modular platform able to address both functional and non–functional requirements. In this paper, we outline EMMON [1], a full WSN-based system architecture for large–scale, dense and real–time embedded monitoring [3] applications. EMMON provides a hierarchical communication architecture together with integrated middleware and command and control software. Then, EM-Set, the EMMON engineering toolset will be presented. EM-Set includes a network deployment planning, worst–case analysis and dimensioning, protocol simulation and automatic remote programming and hardware testing tools. This toolset was crucial for the development of EMMON which was designed to use standard commercially available technologies, while maintaining as much flexibility as possible to meet specific applications requirements. Finally, the EMMON architecture has been validated through extensive simulation and experimental evaluation, including a 300+ nodes testbed

EMMON: a system architecture for large- scale, dense and real-time WSNs

In spite of the significant amount of scientific work in Wireless Sensor Networks (WSNs), there is a clear lack of effective, feasible and usable WSN system architectures that address both functional and non-functional requirements in an integrated fashion. This poster abstract outlines the EMMON system architecture for large-scale, dense, real-time embedded monitoring. EMMON relies on a hierarchical network architecture together with integrated middleware and command&control mechanisms. It has been designed to use standard commercially– available technologies, while maintaining as much flexibility as possible to meet specific applications’ requirements. The EMMON WSN architecture has been validated through extensive simulation and experimental evaluation, including through a 300+ node test-bed, the largest WSN test-bed in Europe to dat

3rd International Workshop on Object Orientation in Operating Systems

This paper presents a design for the use of DSM techniques and system-supported synchronisation to support shared access to persistent objects in a distributed environment. We adopt a hybrid approach where the system granularity is sometimes pages and sometimes objects. We are interested in providing shared access to small (i.e., less than a page) objects in a general purpose, language-independent environment, and supporting both DSM and RPC object access mechanisms. 1 Introduction Object-oriented systems have traditionally relied on remote procedure calls (RPC) as the fundamental method for accessing remote objects in distributed environments. However, the RPC model of shipping invocations to an object can be limiting, preventing, for example, simultaneous legal accesses to copies of an object on multiple nodes

Using trust for secure collaboration in uncertain environments

The SECURE project investigates the design of security mechanisms for pervasive computing based on trust. It addresses how entities in unfamiliar pervasive computing environments can overcome initial suspicion to provide secure collaboration

3rd International Symposium on Object-Oriented Real-time Distributed Computing (ISORC 2000),

Distributed application programmers rely on middleware such as CORBA in order to handle the complexity that arises from the distributed and heterogeneous nature of the underlying computing platform. CORBA, in particular, provides a media streaming mechanism that can be used for media streaming and for associating QoS requirements with media streams. Despite defining the interfaces of the media streaming mechanism, the corresponding specification does not prescribe how QoS is enforced at low-level by the middleware. This paper describes the design and implementation of a QoS architecture, called Quartz, which has been integrated with CORBA in order to provide a framework that allows applications to transfer real-time media in open systems. This framework is employed to model and simulate a pattern recognition mechanism for use in an automated manufacturing cell, which is also described and analysed in this paper

8th World Congress on Intelligent Transport Systems

Modern Urban Traffic Control (UTC) and traffic information systems create considerable quantities of real-time data. Unfortunately, this data is then frequently discarded or stored in a proprietary format that makes it difficult to use for purposes such as historical data analysis or other end-user applications. This paper describes an open architecture for the management of real-time traffic information that uses a three-tiered structure in conjunction with the eXtensible Markup Language (XML) in order to allow traffic data to be stored and used by any number of third party applications. An example of how the architecture was used in conjunction with a SCATS UTC system to create Dublin?s online urban traffic congestion map is also described in order to illustrate the effectiveness of this approach