Rodrigo Palucci Pantoni

A fieldbus simulator for training purposes.

This article presents a fieldbus simulation platform and its remote access interface that enables a wide range of experiments, where users can configure operation sequences and procedures typical of Foundation Fieldbus systems. The simulation system was developed using LabVIEW, with requisites of deterministic execution, and a course management work frame web server called Moodle. The results were obtained through three different evaluations: schedule table execution, simulator functionality and finally, simulator productivity and achievement. The evaluation attests that this new tool is feasible, and can be applied for fieldbus automation systems training purposes, considering the robustness and stability in tests and the positive feedback from users.

A confirmation-based geocast routing algorithm for street lighting systems

This work is part of a research project that analyzes and develops efficient technologies for street lighting systems, a wireless sensor network system used for controlling and monitoring electrical variables. The project of a wireless sensor network protocol depends entirely on the application where the network will be used. In street lighting systems, the non-functional requirements are the delivery rate (with priority related to other aspects), latency, energy efficiency and fault tolerance. Based on these requirements, this work presents a new routing network mechanism for confirmation, named GGPSR with confirmation. This algorithm guarantees delivery in any type of topology and it is not restricted to unit planar graphs. Simulation results proved that the algorithm meets the requirements demanded.

Review: A gradient based routing scheme for street lighting wireless sensor networks

Routing for wireless sensor networks based on gradient is a simple, reliable solution resulting in low information costs for the network package, as well as for the node itself. It is used for convergent traffic, where sensor nodes send messages to the sink node. Due to message transmission failures inherent to wireless sensor networks, researches in this area agree that point-to-point message confirmation in these networks is essential. This work proposes solutions for gradient-based routing using a confirmation mechanism for different neighbors, where four protocol variations are evaluated for sensor networks applications in order to monitor and control electrical variables. Results demonstrate that the protocol based on the longest distance has a satisfactory package delivery rate in severe conditions specified to the application. Furthermore, results show in which situations each routing protocol variation better suits the target application.

Developing and implementing an open and non-proprietary device description for FOUNDATION fieldbus based on software standards

Support for interoperability and interchangeability of software components which are part of a fieldbus automation system relies on the definition of open architectures, most of them involving proprietary technologies. Concurrently, standard, open and non-proprietary technologies, such as XML, SOAP, Web Services and the like, have greatly evolved and been diffused in the computing area. This article presents a FOUNDATION fieldbus(TM) device description technology named Open-EDD, based on XML and other related technologies (XLST, DOM using Xerces implementation, OO, XML Schema), proposing an open and non-proprietary alternative to the EDD (Electronic Device Description). This initial proposal includes defining Open-EDDML as the programming language of the technology in the FOUNDATION fieldbus(TM) protocol, implementing a compiler and a parser, and finally, integrating and testing the new technology using field devices and a commercial fieldbus configurator. This study attests that this new technology is feasible and can be applied to other configurators or HMI applications used in fieldbus automation systems.

Public street lighting remote operation and supervision system

Public street lighting system consists of devices distributed in points of light and a supervision and control application. The system architecture is modular and expandable. In developing the work the C# language is adopted to develop the operation and monitoring via standard CyberOPC and XML file types are applied to the device description and definition of the network topology. This paper describes the validation proposed and the results obtained attests that this applied methodology is feasible and can be applied to other public lighting systems. Public street lighting system consists of points of light and a supervision.The architecture of the proposed system is modular and expandable.The system follows standard technologies.The results obtained attests that this applied methodology is feasible.

A geocast routing algorithm intended for street lighting system based on wireless sensor networks

This work is part of research project where are studied and developed efficient technologies highlighted by the ReLuz (Brazilian National Program of Public Lightning and Efficient Light Signalization) program. It is proposed, in that context, the development of remote command and monitoring infrastructure for management purposes for large areas. Specifically, it refers the research and analysis of efficient routing algorithms in terms of energy consumption, guarantee of package delivery and good performance (minimum delay). Two new geocast routing algorithms are implemented and compared with other candidates applied to street lighting system. Such algorithms refer to wireless sensor networks IEEE 802.15.4 through multi-hop and low reach communication, and low cost. The results show that the proposed algorithm GGPSRII saves more energy, presents a good percentage of delivery guarantee, good performance than compared ones.

Street Lighting System Based on Wireless Sensor Networks

“Sensing and actuating nodes placed outdoors in urban environments so as to improve peoples living conditions as well as to monitor compliance with increasingly strict environmental laws. These field nodes are expected to measure and report a wide gamut of data (for example, the data required by applications that perform smart-metering or that monitor meteorological, pollution, and allergy conditions). The majority of these nodes are expected to communicate wirelessly over a variety of links such as IEEE 802.15.4, low-power IEEE 802.11, or IEEE 802.15.1 (Bluetooth), which given the limited radio range and the large number of nodes requires the use of suitable routing protocols”.

SMAC multi-hop mesh routing protocol using IEEE 802.15.4

This paper discusses some aspects related to Wireless Sensor Networks over the IEEE 802.15.4 standard, and proposes, for the very first time, a mesh network topology with geographic routing integrated to the open Freescale protocol (SMAC - Simple Medium Access Control). For this is proposed the SMAC routing protocol. Before this work the SMAC protocol was suitable to perform one hop communications only. However, with the developed mechanisms, it is possible to use multi-hop communication. Performance results from the implemented protocol are presented and analyzed in order to define important requirements for wireless sensor networks, such as robustness, self-healing property and low latency.

Design of a communication system for integration of industrial networks over public IP networks

The opportunity to integrate industrial automation applications from different cells over IP networks is a great advantage of such high level design over legacy proprietary data acquisition systems. The CyberOPC communication system is a research project in order to support and enhance all communications processes for manufacturing cells over Internet. That communication system was developed initially as variant of the OPC-XML data access specification with the aim to minimize the poll refresh time of the current OPC service communication system, simplify the Internet integration of low cost devices without the WebServices functionalities and provide CyberSecurity functionalities. We introduce in this work the CyberOPC communication system and propose the extension of the CyberOPC services with the device description services supported by an open and non-proprietary technology called Open-EDD with the goal to improve the integration and the process management of different shop floor distributed over public IP networks as Internet. The mains advantages of the proposed solution are: the performance of the CyberOPC Poll service; the simple integration with devices with the HTTP protocol support and the possibility to adopt the CyberOPC as transport system to manage remotely shop-floor services such as the device description service. The communication system proposed in this work represents an alternative technology for its performance and simplicity compared with the upcoming OPC-UA specification.

A confirmation-based geocast routing algorithm for street lighting system

This work is part of a research project that analyzes and develops efficient technologies for street lighting systems, a wireless sensor network system used for controlling and monitoring electrical variables. The project of a wireless sensor network protocol depends entirely on the application where the network will be used. In street lighting systems, the non-functional requirements are the delivery rate (with priority related to other aspects), latency, energy efficiency and fault tolerance. Based on these requirements, this work presents a new routing network mechanism for confirmation, named GGPSR with confirmation. This algorithm guarantees delivery in any type of topology and it is not restricted to unit planar graphs. Simulation results proved that the algorithm meets the requirements demanded.