| Linet network |
The LINET Light Network System is a new technical innovation helping electronics designers plan and implement application specific control and slow data networks. LINET is especially designed to address the needs of small and medium sized systems to control a network of electrically driven or controlled equipment and various types of data acquisition devices. The application areas range from industrial data acquisition and process control to home automation. The LINET Light Network System consists of a light twisted-pair cabling system that transmits control information and data to and from the nodes in the network, and a control unit for the network. The nodes are small, inexpensive components attached to various other components, interfacing at the electrical and optoelectrical level. The control unit provides configuration services and communication with other systems, such as PC's. The LINET software offers a set of ready-for-use functions and, if obtained in source code, the option to develop any extensions the designer may plan to implement in a specific application. The ready-for-use functions include:
In any one network, there can be up to 200 nodes connected to a twisted-pair cable with a maximum total length of 1 000 meters. The network cabling topology is totally free, either star, tree or point-to-point bus, providing for maximum flexibility in designing, installing and modifying the network. Each network contains one control unit. Networks can be connected together via the control units to form a larger network. In an industrial application, for example, a set of temperature sensors could be attached to the networked nodes via A/D converters to collect data for a furnace control unit, which adjusts the operating levels of heating elements via another set of networked nodes. All nodes are conveniently attached to the same twisted-pair cabling. In a home automation application a node could be attached to, for example, a light switch and another one to the power supply of a lamp, via a SSR (solid-state relay). The network will carry the on/off signal from the switch to the lamp, via the cabling, as the switch is pressed and the lamp will be turned on or off accordingly. Using the control unit the tenant can easily arrange and re-arrange any switch to control any lamp or a group of lamps, at any time, without needing the help of an electrician. Copyright Linet Oy. All rights reserved. |
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