Writing applications for sensor networks often involves low-level programming. In this demo we show a generic sensor network platform (SwissQM/SwissGate) that provides a high level interface for programming sensor networks and also provides a multi-tier architecture for efficiently handling and optimising the operation of the network. The demo is based on a small scale (deployment in a building) where the network is used concurrently by several applications to measure heating, ventilation, and air conditioning control (HVAC) parameters. The network also implements several event detection functions for fire, burglar, and user triggered alarms. In the demo we show how the sensor network can be programmed using queries in several languages (SQL, Java, XQuery), including user-defined functions (in a C-like language) and the results obtained as a stream of data tuples. We also show the ability to efficiently use the network concurrently.@en

SwissQM is a novel sensor network platform for acquiring data from the real world. Instead of statically hand-crafted programs, SwissQM is a virtual machine capable of executing bytecode programs on the sensor nodes. By using a central and intelligent gateway, it is possible to either push aggregation and other operations into the network, or to execute them on the gateway. Since the gateway is built in an entirely modular style, it can be dynamically extended with new functionality such as user interfaces, user defined functions, or additional query optimizations. The goal of this demonstration is to show the flexibility and the unique features of SwissQM.@en