Archive for the ‘SmartGrid-HAN’ Category
July 7th, 2011 | 
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Green:Net 2010 – How the Internet Giants are Getting Into Energy Management
10 Monitoring Tools Bringing Smart Energy Home
Application-Layer HAN Protocols
Connecting Smart Homes and Smart Grids to Save Energy: Home Area Networks
By Barry Haaser, Chairman of the Digital Home Alliance and Senior Director, LONWORKS Infrastructure Business, Echelon Corporation
Successful adoption of consumer products can be tied to ease-of-use and simplicity. The ANSI/CEA 709.1 and EN 14908 standards were recently enhanced to include provisions for self-installation of intelligent devices in the HAN and automatic discovery by in-home displays and consumer products. The CECED (European Committee of Domestic Equipment Manufacturers) created a standard for networking consumer appliances together in a home based on the ANSI/CEA and EN standards. The result of this work appears in the innovative Interoperable Self Installation (ISI) technology to support self installation of consumer’s products.
The ISI protocol is an application-layer protocol that allows installation of devices and connection management without the use of a separate network management tool. The ISI protocol can be used with small networks with up to 200 devices. The ISI protocol supports transitioning to a larger managed network utilizing a network management tool for configuration of all devices in the network. A network management tool provides additional flexibility, enables more complex connections and configuration, and supports larger networks. The ISI protocol simplifies installation by eliminating the need for a separate tool for simple networks.
In an ISI network, there is no central network management server, so each device must allocate its own network resources and automatically resolve any conflicts that may occur due to duplicate resource assignment.
HAN
Connecting Smart Homes and Smart Grids to Save Energy: Home Area Networks
By Barry Haaser, Chairman of the Digital Home Alliance and Senior Director, LONWORKS Infrastructure Business, Echelon Corporation
The most effective method for managing devices in a HAN is with the existing power wiring found in every home. Any device plugged into an outlet can be connected and managed as part of the HAN. Since every meter delivers electricity, it becomes the ideal location for collecting essential data from the utility.
Powerline Protocols
Connecting Smart Homes and Smart Grids to Save Energy: Home Area Networks
By Barry Haaser, Chairman of the Digital Home Alliance and Senior Director, LONWORKS Infrastructure Business, Echelon Corporation
The most popular HAN standard using home power wiring is the ANSI/CEA 709.1 standard in the U.S. and the EN 14908 standard in Europe. Both standards support a robust protocol that is incorporated in over 100 million intelligent devices today, including over 30 million power line based devices around the globe.
San Jose, California based Echelon Corporation offers the LonWorks infrastructure, a family of hardware and software tools and components to design, install and maintain peer-to-peer control networks. All of the devices in a LonWorks network communicate using the ANSI/EIA-709.1 protocol standard. This seven-layer OSI protocol provides a set of services that allow the application program in a device to send and receive messages from other devices in the network without needing to know the topology of the network or the functions of the other devices.
Neuron Chips, a family of microprocessors supplied by Cypress Semiconductor and Toshiba, combine an ANSI/EIA-709.1 compliant processor core for running applications and managing the network communications, with a media-independent communication port, memory, I/O, and a 48-bit identification number (Neuron ID) that is unique to every device. The communication port permits short distance Neuron Chip-to-Neuron Chip communications, and can also be used with external line drivers and transceivers of almost any type.