Neuron chip. Echelon

28 04 2011

In order to achieve economical and standardized deployment, Echelon designed the Neuron Chip. The Neuron name was chosen to point out the similarities between proper network control implementation and the human brain. There is no central point of control in the brain. Millions of neurons are networked together, each providing information to others through numerous paths. Each neuron is typically dedicated to a particular function, but loss of any one does not necessarily affect the overall performance of the network.

To the developer and the integrator, the beauty of the Neuron Chip lies in its completeness. The built-in communication protocol and processors removes the need for any development or programming in these areas. To refer back to the ISO/OSI reference model of a communication protocol, the Neuron Chip provides the first 6 layers. Only the application layer programming and configuration needs to be provided. This standardizes implementation and makes development and configuration relatively easy.

Most LonWorks devices take advantage of the functions of the Neuron Chip and use it as the control processor. The Neuron Chip is a semiconductor device specifically designed for providing intelligence and networking capabilities to low-cost control devices. The Neuron Chip includes three processors that provide both communication and application processing capabilities. The device manufacturer provides application code to run on the Neuron Chip and I/O devices to be connected to the Neuron Chip. Echelon Corporation designed the original Neuron Chip, and successor members of the family now designed and manufactured by Echelon’s manufacturing partners. Cypress Semiconductor and Toshiba are all current producers of Neuron Chips. Multiple suppliers create a competitive environment for the Neuron Chips, provide reliable sources for the chips, and help drive prices down.

The Neuron Chip is a system-on-a-chip with multiple processors, read-write and read-only memory (RAM and ROM), and communication and I/O subsystems. The read-only memory contains an operating system, the LonWorks protocol, and an I/O function library. The chip has non-volatile memory for configuration data and for the application program, both of which are downloaded over the LonWorks network. At the time of manufacture, each Neuron Chip is given a permanent unique-in-all-the-world 48-bit code, called the Neuron ID. A large family of Neuron Chips is available with differing speeds, memory type and capacity, and interfaces. Approximately 54 million Neuron Chips had been shipped as of mid 2004.

A complete operating system including an implementation of the LonWorks protocol, called Neuron Chip Firmware, is contained in ROM on, or attached to, every Neuron Chip. Most LonWorks devices include a Neuron Chip, which has an identical, embedded implementation of the LonWorks protocol. This approach eliminates the “99% compatibility” problem and assures that connecting LonWorks devices together on the same network requires little or no additional hardware. The Neuron Chip is actually three, 8-bit inline processors in one. Two execute the LonWorks protocol; the third is for the device’s application. The chip is, therefore, both a network communications processor and an application processor, significantly reducing the implementation cost for most LonWorks devices.

Fuente: Echelon





Echelon’s Lonworks Overview

23 04 2011





Integración en Aire Acondicionado con tecnología LONWORKS de los principales fabricantes (DAIKIN, Mitsubishi Electric, Mitsubishi Heavy Industries, Toshiba, Fujitsu, General…) en su sistema de control KNX.

22 04 2011

IntesisBox es un dispositivo KNX que permite leer y escribir variables de red (SNVTs) de dispositivos LON conectados a una red LON, y ofrece estos valores a través de su interfaz KNX/EIB. Los valores de SNVTs en LON se pueden leer/ escribir desde KNX.

Cada tipo de dato básico de las variables de red en dispositivos LON se puede mapear en una dirección de grupo KNX individual. El interfaz LON de IntesisBox lee continuamente por “polling” los dispositivos LON configurados, no se requieren vínculos entre IntesisBox y los dispositivos LON. Todas las lecturas actualizadas se mantienen en la memoria de IntesisBox para interacción inmediata con el sistema KNX cuando se necesite. El interfaz KNX de IntesisBox se conecta directamente al bus EIB y está opto aislado del resto de la electrónica interna.

IntesisBox puede acceder a los dispositivos LON usando direccionamiento basado en Neuron-Id (dirección física) o en subred/nodo (dispositivos comisionados). Si es necesario IntesisBox puede declarar los dispositivos LON como comisionados, con esto no es necesario un software de integración LON para comisionado (p.e. LonMaker) para integrar dispositivos no comisionados previamente.
La gama de pasarelas IntesisBox KNX se configura con LinkBoxEIB, un software para Windows® que se suministra sin coste adicional junto con la compra de IntesisBox. Con la instalación de LinkBoxEIB se instalan proyectos Demo para la integración de dispositivos LON de los principales fabricantes de aire acondicionado (DAIKIN, Mitsubishi Electric, Mitsubishi Heavy, Toshiba…). Usando estos proyectos la configuración de IntesisBox para este tipo de integración es fácil y rápida.








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