Vi utbildar för framtiden och skapar samhällsnytta genom vår forskning som levandegörs i nära samarbete med näringslivet. Vi bedriver forskning inom computer science, datateknik, software engineering och interaktionsdesign - från grundforskning till direkta tillämpningar. Institutionen har en stark internationell prägel och är delad mellan Chalmers och Göteborgs universitet.
We are engaged in research and education across the full spectrum of computer science, computer engineering, software engineering, and interaction design, from foundations to applications. We educate for the future, conduct research with high international visibility, and create societal benefits through close cooperation with businesses and industry. The department is joint between Chalmers and the University of Gothenburg.
(2022) ALMBRATT, ERIK; BYADARAHALLI MADHUSUDHAN; Chalmers tekniska högskola / Institutionen för data och informationsteknik; Chalmers University of Technology / Department of Computer Science and Engineering; Larsson-Edefors, Per; Petersson, Lena
Preventive maintenance is commonly accepted as an economical solution to prevent production stops. Machine conditioning may offer data, allowing a reduced frequency of maintenance. However, these machine conditioning sensors have to be maintained themselves, reducing users’ confidence in the data. It may also make machine conditioning monitoring economically infeasible in some applications.
Vibration-based energy harvesting may provide a reliable and, most importantly, low maintenance energy source for such machine conditioning sensors. In this project we designed and evaluated the implementation of a vibration-logging wireless sensor device, transmitting over Bluetooth Low Energy 5, and powered by a commercially available electrodynamic vibration generator.
The results show that it is reasonable to expect a usable power output of around 0.1 to 6mW, greatly depending on the vibration source. This amount of power enables microcontroller-based designs to operate indefinitely. However, the technology is limited by the low bandwidth of contemporary generators, making vibration-based energy harvesting difficult to implement. While vibration-based energy harvesting shows promise, it requires thorough investigations to be able to conclude whether an application is suitable for the technology.