Academia
Publications & Third-Party Funding
Overview of research projects, patents, scientific publications and academic guest lectures.
Third-Party-Funded Projects
- "Voyager-PV: Fully integrated and system-optimised electronic solutions at the solar module"
- "Manufacturing and calibration of nonlinear force-measuring cells — simulation and modelling of cost-effective, temperature- and ageing-robust sensors for measuring forces and torques in robotics applications"
- "Initiation of research cooperation in the field of photovoltaics"
- "WIPANO — SME Patenting"
Patents & Patent Applications
Filings are in German; the original German titles are kept alongside an English translation.
Appliance with a storage compartment — Gerät mit einem Lagerraum
Use of vibrating-string sensors on storage elements (e.g. shelves) to precisely infer the weight of stored goods through frequency changes.
Refrigerator/Freezer — RF field strength — Kühl- und/oder Gefriergerät, RF-Feldstärke
Localisation and quality assessment of refrigerated goods (e.g. wine bottles) using non-optical sensing by evaluating the field strength (RSSI) of high-frequency waves.
Refrigerator/Freezer — camera in the actuating element — Kamera im Betätigungselement
Integration of a camera directly into the actuating element (door handle), in order to optically capture the interior — particularly for appliances with glass doors.
Refrigerator/Freezer — remote-controlled door stop — Ferngesteuerte Feststellvorrichtung
A remote-controlled door stop that prevents the door from closing fully (e.g. for ventilation against mould) and can be deactivated via smartphone to start cooling remotely.
Holding device for a camera — Haltevorrichtung für eine Kamera
A magnetic, detachable holding device to flexibly fix cameras to interior walls or glass doors of refrigeration appliances.
Refrigerator/Freezer — indoor mesh localisation — Indoor-Mesh-Lokalisierung
Localisation of objects in the interior via an RF mesh network of transceivers attached as sensors to foodstuffs or shelves.
Refrigerator/Freezer — conductive substance for weighing — Leitfähige Substanz zur Wägung
Weight measurement via a chemical substance (e.g. transparent conductive oxides) integrated into the shelf surface that changes its electrical resistance under deformation.
Publications (selection)
- J. A. Weicht, "Simulation and test of metastability of a-Si/μc-Si solar modules under outdoor conditions", doctoral thesis, Bielefeld University; Berichte aus der Physik, Aachen: Shaker Verlag, 2017. ISBN 978-3-8440-5224-4.
- G. Behrens, J. A. Weicht, K. Schlender, F. Fehring, R. Dreimann, M. Meese, F. U. Hamelmann, C. Thiel, T. Försterling, M. Wübbenhorst, "Smart Monitoring System of Air Quality and Wall Humidity Accompanying an Energy Efficient Renovation Process of Apartment Buildings", in: From Science to Society, Springer Cham, pp. 181–189, 2017.
- J. A. Weicht, G. Behrens, F. U. Hamelmann, "Simulation of light-induced degradation of μc-Si in a-Si/μc-Si tandem solar cells by the diode equivalent circuit", Journal of Physics: Conference Series, 682(1): 012017, 2016.
- F. U. Hamelmann, J. A. Weicht, G. Behrens, "Light-Induced Degradation of Thin Film Silicon Solar Cells", Journal of Physics: Conference Series, 682(1): 012002, 2016.
- J. A. Weicht, R. Rasch, G. Behrens, F. U. Hamelmann, "Performance characterization of thin-film-silicon based solar modules under clouded and clear sky conditions in comparison to crystalline silicon modules", Electronic Materials Letters, 12(4): 468–471, 2016.
- J. A. Weicht, F. U. Hamelmann, G. Behrens, "Parameter variation of the one-diode model of a-Si and a-Si/μc-Si solar cells for modeling light-induced degradation", Journal of Physics: Conference Series, IOP Publishing, 559: 012017, 2014.
Conference Contributions
- J. A. Weicht, "AI-supported hazard coefficient for vehicle access protection", German Prevention Congress (Deutscher Präventionstag), April 2026. accepted
- J. A. Weicht, G. Behrens, F. U. Hamelmann, "Changes in temperature coefficient of the diode model caused by light-induced degradation of a-Si/μc-Si solar cells", Proc. EU PVSEC 32, 2016.
- R. Rasch, G. Behrens, F. U. Hamelmann, S. Hantelmann, R. Dreimann, J. A. Weicht, "Automated Thermal Imaging for Fault Detection on PV-Systems", Proc. EU PVSEC 31, 2015.
- J. A. Weicht, R. Rasch, G. Behrens, F. U. Hamelmann, "Changing of the parameters of the three-diode model by light-induced degradation at different degradation temperatures of a-Si/μc-Si solar cells", Proc. EU PVSEC 31, 2015.
- J. A. Weicht, G. Behrens, F. U. Hamelmann, "Changing in irradiation behavior and temperature-coefficient variation caused by light-induced degradation of a-Si/μc-Si solar cells", Proc. IEEE PVSC 42, 2015.
- J. A. Weicht, J. Zielinski, A. Domnik, F. U. Hamelmann, G. Behrens, "Characterization of shadowing on c-Si PV-modules and irradiation sensors by the serial resistance using Artificial Neural Network", Proc. WCPEC 6, 2014.
- G. Behrens, A. Domnik, S. Hempelmann, J. A. Weicht, F. U. Hamelmann, S. Yilmaz, L. Kruse, "Machine Learning Methods for Partial Shading Detection in Monitoring Data on PV-Systems", Proc. EU PVSEC 29, 2014.
- J. A. Weicht, F. U. Hamelmann, G. Behrens, "Low Light Behavior of a-Si and a-Si/μc-Si PV-Modules Compared to c-Si PV-Modules under Field Test Conditions", Proc. EU PVSEC 29, 2014.
- J. A. Weicht, F. U. Hamelmann, A. Domnik, G. Behrens, "Changes in the serial resistance of a-Si, a-Si/μc-Si and mono-crystalline PV modules during the year", Proc. IEEE PVSC 40, 2014.
- J. A. Weicht, F. U. Hamelmann, G. Behrens, "Light-induced degradation of a-Si/μc-Si thin film solar cells under different climate conditions and its influence on performance", Proc. EU PVSEC 28, 2013.
- G. Behrens, F. U. Hamelmann, S. Yilmaz, I. Kruse, J. A. Weicht, L. Niemann, "Universal location based data sets for monitoring and scientific data analysis of PV-systems", Proc. EU PVSEC 28, 2013.
Academic Guest Lectures (selection)
- "Embedded Software Development"
- "Simulation of light-induced degradation of μc-Si in a-Si/μc-Si tandem solar cells by the diode equivalent circuit"
- "Metastability of thin-film silicon based solar cells under different climatic conditions"
- "Simulation of light-induced degradation of a-Si/μc-Si solar cells under different climatic conditions"
- "Simulation of light-induced degradation of μc-Si in a-Si/μc-Si tandem solar cells by the diode equivalent circuit"
- "Light-induced degradation of thin-film silicon based solar cells under different climatic conditions"
- "Parameter variation of the one-diode model of a-Si and a-Si/μc-Si solar cells for modeling light-induced degradation"
- "Light-induced degradation of thin-film silicon-based solar modules"
- "Light-induced degradation of micromorph PV modules"