E-Senza Technologies is a provider of wireless device networking products and solutions for connectivity between sensors and systems. Its SenzaNET technology is designed for robustness and allows reliable wireless communication in harsh industrial environments.
SenzaNET is based on the IEEE802.15.4 standard, which defines the physical network layer as well as the data link layer. In order to cover higher network functions, SenzaNET has different plug-ins for ZigBee, Wireless HART, IPv6lowPAN and ISA100. All plug-ins are capable of software upgrades, so that future-proof solutions can be realised. To ensure network security, all data transmission is encrypted. Each new node is granted access to the network only after authentication based on its unique MAC-ID. Each individual data packet is checked for integrity.
For industry networking, SenzaNET is designed for low data transmission rates as it actually uses only a tiny fraction of the available bandwidth. Rather, its design is focused on robustness and protection against interferences. SenzaNET combines TDMA.DSSS and FHSS with mesh networking. Field tests have shown that transmission is more than 99% reliable even in harsh industrial environments.
SenzaNET uses the licence free frequency bands of 2,4 GHz and 868/912 MHz. All network nodes are time synchronised and put into low-power standby mode when not required to perform a measurement or initiate an action. At preset time intervals or in alarm conditions they become active, collect data or trigger an action, after which they fall back into standby mode.
With middleware and application layer integrated in one stack, SenzaNet is a modular framework which is composed of network nodes, network gateways, network hubs, a middleware and a Web-based server. Network nodes are the SenzaBlocks, which come in different flavours, to integrate devices, actuators and sensors to the wireless device network. Network gateways are SenzaGate and/or SenzaCoordinator, who manage the wireless device network, collecting data from devices. The network can be directly programmed through an API or can be interfaced to external industrial systems or even managed and used through the SenzaWMS Web-based application.
Network hub SenzaHub helps place mesh SenzaBlocks flexibly, increasing scalability and range of the wireless device network. The SenzaMobile handheld enables setup, configuration, diagnosis or update of the wireless device network. The SenzaWMS middleware provides services to higher level applications like SAP, among others, to simplify the task of integrating with multiple wireless device networks to seamlessly integrate into one larger data network.
For more information contact Grant Joyce, Lapp Kabel, +27 (0)11 201 3200, [email protected], www.lappcable.co.za
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