Institut für Energietechnik (IET)


Aerosense: A novel MEMS-based surface pressure and acoustic smart measurement system for wind turbines



Wind energy is a key technology for reaching the UN's sustainable development goals and the EU Energy Strategy 2030. As the wind energy industry is maturing and wind turbines are growing, there is an increasing need for cost-effective monitoring and data analysis solutions to understand the complex aerodynamic and acoustic behaviour of the blades, to improve the performance and reduce the operating costs.


Project goals

The aim of this project is to develop a first ever MEMS-based surface pressure and acoustic smart measurement system that is thin, non-intrusive, robust, modular, low power and self-sustaining, wirelessly transmitting, easy to install and cost-effective for wind turbines. The system will integrate novel embedded signal processing solutions, including artificial intelligence if necessary, for on-board calibration and correction of the measured quantities and a digital twin platform for effective data utilisation and value creation. Its modular and scalable design will allow wind turbine monitoring on an entirely new scale.

The research goals are:

  • Research goal 1: Definition of the system requirements for the main customer groups.
  • Research goal 2: Development of smart sensor correction and calibration methods.
  • Research goal 3: Design & development of a self-sustainable measurement system for most stringent requirements defined in research goal 1.
  • Research goal 4: Design & development of a digital twin platform including on-board signal processing.
  • Research goal 5: Build, test & validation of a prototype system (laboratory, wind tunnel & field).
  • Research goal 6: Public release of a unique set of aerodynamic & acoustic field measurement data.
  • Research goal 7: Demonstration of the potential added value of the system.
  • Research goal 8: Development of business cases & commercialisation plans.


Project partners

This project is being managed by Sarah Barber at HSR IET and being carried out by:


The members of the Advisory Board are:

  • Enercon GmbH (Germany).
  • GE Renewable Energy (Germany).
  • Senvion GmbH (Germany).
  • EKZ Renewables (Switzerland).
  • Brüel & Kjaer (Germany).
  • Fraunhofer IWES (Germany).
  • TU Delft (Nethlerlands).
  • TNO ECN (Netherlands).
  • NREL (USA).
  • Danish Technical University (Denmark).



This project is funded from April 2020 to March 2023 by the Swiss BRIDGE Discovery programme.


Dr. Sarah Barber
Oberseestrasse 10
CH-8640 Rapperswil SG
+41 (0)55 222 42 62