PhD

SenSys/BuildSys 2015

I attended SenSys and BuildSys in Seoul, South Korea from 1-5 November to do a demonstration on our progress with Babel. Our short paper can be found here.

BUSICO3D

With BUSICO3D, we developed a system that provides: (i) a virtual representation of a building as a more natural interface for human interaction, and (ii) an integration of simulation and control that allows the testing of configurations without any harm on the physical building or personal environment (see Figure 1). BUSICO3D uses sMAP as an abstraction layer for accessing and describing various sensors and actuators of the physical building. The structure of the physical building is derived from an imported BIM (Building information modeling) model.

COSMGrid

COSMGrid was developed within the scope of Energy Futures. COSMGrid applies good practices from Computer Science to design a cost effective and flexible microgrid. It is based on off-the-shelf power electronic components (including inverters) that are controlled and monitored by an open source infrastructure based on AVR microcontrollers (Arduino). By de-coupling the control and monitoring part from the power electronics hardware and creating a layer on top, COSMGrid is significantly cheaper than using special purpose power electronics hardware.

Node Benchmarking

For various projects in the scope of sensor networks it is often necessary to benchmark their performance in terms of energy consumption and computing performance. Measuring energy consumption with a osciloscope can be cumbersome. Sensor nodes operate on low currents. Usually a shunt resitor is used to transform current to a voltage that then can be measured. However a current consumption in the µA range will only lead to a small voltage drop.