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Copyright of Radio Electronics, Computer Science, Control is the property of Zaporizhzhia National Technical University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Radio Electronics, Computer Science, Control is the property of Zaporizhzhia National Technical University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The street lighting is one of major components in total energy consumption in cities. The paper is focused on a concept of street lamp control systems and function organization with remote monitoring, to reduce maintenance costs and energy consumption. A new approach to the definition of functional strategy organization for outdoor lighting systems is introduced in the paper. Proposed functional strategies are based on four efficiency classes of building automation and control systems (BACS) defined in the EN 15323 standard. They have been formulated, analysed and eventually implemented and verified in real experiment street lighting installation. This outdoor lighting system, designed by the authors, based on LonWorks (the ISO/IEC EN 14908) platform with a power line communication aimed to control high-pressure sodium lamps. The street lamps are integrated nodes of a building management system (BMS). The results of experimental tests for the proposed functional strategies, implemented with various control scenarios, show that they provide a great potential in reducing energy consumption by street lighting installations. In particular, the energy use can be reduced even by 45 % in comparison to conventional street lighting system, especially without the use of monitoring and control. [ABSTRACT FROM AUTHOR]

Remote monitoring of the parameters of a building requires reading/writing the values of the variables provided by networks of smart devices (sensors, actuators and controllers), that control these parameters. A solution may be the creation and optimization of a web interface that can be accessed from the Internet via a web server providing IP connectivity and other web capabilities. Networks can also be monitored through the 220V AC network by using transceivers. Various services required in buildings can be remotely monitored, the energy management can be improved by making a more efficient use of the electricity and the heat consumption with the aim of reducing the maintenance cost. Utilities companies (water, gas, electricity, etc.) are also becoming more interested in remote monitoring of customers' consumption and are trying to integrate some of the so called "advanced metering systems" (which contain smart meters networks). Remote monitoring of utilities, as well as monitoring building parameters, requires read/write of the network variables values of smart meters that operate with customer utility values [15], [16], [26]. Our paper presents the principles of remotely monitoring the parameters of the buildings together with the most commonly used norms in the field and also an example of an application for remote monitoring several LonWork control networks. [ABSTRACT FROM AUTHOR]

A modern control network consists of a number of intelligent devices that communicate on one or more channels, using a common protocol. The network's intelligent devices, called nodes, may each include more microprocessors running the application, and the protocol. Also, each device includes a component called transceiver, that provide the electrical interface with the communication channel. In the LonWorks networks, most of the devices (intelligent sensors, controllers, actuators), exploit the advantages of the Neuron Chip, the default LonWorks node, which includes three processors, two of which execute the LonTalk protocol, and the third the device's application-programme. The Neuron Chip supplies the functions of the first six OSI stack layers, the user needing to provide only the configuration and the programming of the application layer. The goal of this paper is to present the comunication mode between intelligent devices, in LonWorks networks, at the MAC and Application levels, based on LonTalk protocol. This analysis is useful in order to know the conditions to be fulfilled for an optimal design of the network, optimal setup and configuration of the devices, and to provide multivendor interoperability. The paper also presents an example of effective design of a lighting control network. [ABSTRACT FROM AUTHOR]

Considering the increasing popularity of network-based control systems and the huge adoption of IP networks (such as the Internet), this paper studies the influence of network quality of service (QoS) parameters over quality of control parameters. An example of a control loop is implemented using two LonWorks networks (CEA-709.1) interconnected by an emulated IP network, in which important QoS parameters such as delay and delay jitter can be completely controlled. Mathematical definitions are provided according to the literature, and the results of the network-based control loop experiment are presented and discussed. [ABSTRACT FROM PUBLISHER]

In the past few years, household remote control products have continuously emerged, and more equipment could be controlled at remote distance. With continuous growth in the number of home remote control devices, the number of remote controllers at home is increasing. In addition, with the increase of PC and notebook computer demands, technologies for controlling computer devices or digital home appliances within the home networks have been launched, such as UPnP (Universal Plug and Play), OSGI (Open Service Gateway Initiative), HAVI (Home Audio/Video Interoperability), and Jini. Because there are too many standards of home network, it is difficult to define a universal standard conformed to others. Many researches have focused on linking the various protocols of these devices, but most of them used the Web or PDAs to control the devices. In such situation, users must rely on computer equipment and face the battery problem of handheld devices. This study aims to develop a cross-heterogeneous network remote control system. In order to relieve the problem of excessive remote controllers, we built a context-aware multi-model remote controller for electronic home devices to relieve the user of a nuisance of enormous amount of remote controllers. [ABSTRACT FROM AUTHOR]

Abstract: Virtual device network (VDN) is an intelligent integrated form of a device (control) network and IP network. If a fieldbus based distributed control system (DCS) is implemented on a global VDN, efficiency and flexibility can be significantly improved. In this study DCS implemented on the LonWorks/IP VDN is investigated with an example of model reference adaptive control (MRAC) of a geared DC motor. In order to compensate for the network induced uncertain time delay inherently present on VDN, the modified Smith predictor based internal model controller was integrated to MRAC (MRAC–IMC). The effectiveness of the proposed control scheme was tested through experiment. The proposed control scheme exhibited the robustness to noise and external disturbances and the good tracking performance around zero velocity point occurring due to overshoot and stick friction. Result of this study suggests that sophisticated servo control of dynamic systems is possible from a remote client PC on VDN by properly compensating the network delay. [Copyright &y& Elsevier]

Abstract: Recently, various home network systems, such as LonWorks, Echonet, and LnCP, etc., are developed to enhance customer''s comfort and convenience. However, it is not known that performance of any protocol is superior. Hence, this paper evaluates performance of LnCP (Living network Control Protocol) by LG Electronics and LonWorks by Echelon. For this purpose, we have developed simulation model using state diagram of LonWorks and LnCP, and simulation conditions through analysis of message to be generated in the smart home. Also, we evaluate performance, such as maximum transmission delay and mean transmission delay, of both protocols. [Copyright &y& Elsevier]

A networked control and supervision system (NCSS) based on LonWorks fieldbus and Intranet/Internet was designed, which was composed of the universal intelligent control nodes (ICNs), the visual control and supervision configuration platforms (VCCP and VSCP) and an Intranet/Internet-based remote supervision platform (RSP). The ICNs were connected to field devices, such as sensors, actuators and controllers. The VCCP and VSCP were implemented by means of a graphical programming environment and network management so as to simplify the tasks of programming and maintaining the ICNs. The RSP was employed to perform the remote supervision function, which was based on a three-layer browser/server(B/S) structure mode. The validity of the NCSS was demonstrated by laboratory experiments. [ABSTRACT FROM AUTHOR]

Abstract: Until now, control networks including various kinds of controlled devices have become widespread worldwide in the development of building automation. Control networks have their own network protocols, and because of the inconsistency of IP network protocols, extra equipment is required to integrate these two types of protocols, and to cope with the control and management of building automation systems over the internet. However, because these integration solutions are very costly due to inflexible hardware implementation and are strongly depend on their manufacturers, system designers have difficulty implementing these solutions to their various specific applications. In this paper, an advanced distributed control scheme that connects the control networks to IP networks based on LonWorks technology is presented. The proposed scheme is implemented by using a simple programmable Basic Lon Node (BLN) and compatible personal computer as an internet server. BLN is an electric board that was developed in this research and physically contains a transceiver, Neuron chip, and some memory devices. To perform various functions as an internet server, the PC uses a control software of Lon on Internet System (LOIS), where C-language was used to write the LOIS web server for the GNU/LINUX environment. With our scheme, system designers can easily implement their various specific applications only with the down load of the control program via a PC serial port (RS-232). This scheme can provide an advanced, lower cost, worldwide, distributed control system, as well as freedom and flexibility for comprehensive developments. [Copyright &y& Elsevier]

Requirements for Distributed Monitoring and Control Networks (DMCN) differ greatly from those of typical data networks. Specifically, any DMCN technology which employs a fieldbus protocol is different from IP network protocol TCP/IP. In general, one needs to integrate fieldbus protocol and TCP/IP to realize DMCN over IP network or internet, which can be viewed as Virtual Device Network (VDN). Interoperability between devices and equipments is essential to enhance the quality and the performance of predictive maintenance (PM). This paper suggests a basic framework for VDN using DMCN over IP network and a method to guarantee interoperability between devices and equipments. [ABSTRACT FROM AUTHOR]

As enforced by Fire Services Department in Hong Kong, indoor battery-backup emergency lighting is required to be tested monthly. A new distributive monitoring system is developed using LonWorks technology to cater for this. The system has several distinctive features—higher reliability, cost effectiveness and user friendliness. A low-cost electronic circuit board and a LonWorks control module are integrated with the existing emergency lighting circuit to form an intelligent control node in which the maintenance test is performed automatically. The test results are then sent to a control center via a LonWorks network. Any defective lighting point can be spotted without extensive effort on patrolling. Thus, higher reliability of the lighting system is achieved with significant reduction in maintenance cost. [Copyright &y& Elsevier]

Copyright of e & i Elektrotechnik und Informationstechnik is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)