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Joseph Moerschell

Joseph Moerschell
Roleprofessor UAS
QualificationsDr. es sc. tech.
Phone+41 27 606 87 67
Fax+41 27 606 87 16
Emailjoseph.moerschell@hevs.ch
OfficeA206

Educational activities

At Bachelor level:

  • Mechatronics course (two terms, second year of study): introduction to electro-mechanics, sensors, signals and systems, feedback control.
  • Electronics course (one term, third year of study): PLL, oscillators, noise, ADC and DAC, sampled systems, digital filters and controllers.
     

At Master level:​

  • Micro-positioning course (one term): components and system design aspects of mechanisms carrying out small displacements.
  • Advanced Electronics Design course (10 weeks): operational amplifier architecture, interface circuits, ADC and DAC, in particular sigma-delta conversion technique.
  • Hi-Rel Electronics course (10 weeks): tools for the reliability analysis of electronic systems, i.e. failure modes, parts stress, worst case, reliability prediction, test planning.​
     

Directed 26 Bachelor and 7 Master theses, co-reporter of 3 PhD theses at EPFL.

Current research

Engineering for metrology and instrumentation, where high resolution, good dynamic behavior and precision are key issues:

  • Robust electronics for harsh environments, e.g. space flight, under-ground and environmental investigations.
  • Active and passive noise reduction in electronic circuits. Auto-zeroing and double correlated sampling, application to sensing acquisition circuits.
  • Measurement and digitization of slow signals (periods from seconds to days) and of small electrical quantities, in particular using lock-in techniques.
  • Measurement and interpretation of the frequency response of impedances and transfer functions. Separation of different contributions to the impedance of a circuit.
  • Signal processing and automatic control oriented towards hardware implementation, analog and digital. Adaptation of algorithms to hardware implementation.
     

Recent projects

  • CPPS – Educational center for earthquake prevention (2013-2016)
    5m x 6m 3D earthquake simulator for public demonstrations and  non-structural component tests, small 1D and 2D shake tables and experiments.
  • ​SCCER-SoE (phase 1, 2013-2016)
    "Swiss Competence Center for Energy Research – Supply of Electricity" is a national competence center to develop fundamental research and innovative solutions in the domains of GeoEnergies and HydroPower granted by the Swiss Commission for Technology and Innovation (CTI).
    > ​Harsh environment sensors for seismic borehole monitoring and water reservoir detection, first installation of deep borehole seismometer at Lavey-les-Bains end of 2016.
  • IS-FEE and GRS-FEE (2005-2016)
    Design and test of position sensing front end circuits for inertial sensor of gravitational wave detector, flight electronics (12 A4 size electronic PCBs) successfully launched in 2015 within LISA technology package on LISA Pathfinder mission, currently operating at L1 point.
     

Publications during the last five years

CONFERENCE CONTRIBUTIONS (not reviewed)

  • Limnimeter for Mountain Streams 
    Bardou E., Cachelin Ch., Emery G., Moerschell J., Travaglini E.
    SCCER-SoE Annual Conference 2016, Sion, Switzerland, September 12-13, 2016
  • SismoRiv: an innovative system for bedload monitoring based on the measurement of seismic noise through river banks 
    Mayencourt L., Moerschell J., Travaglini E., Ornstein P., Schneider T.
    SCCER-SoE Annual Conference 2016, Sion, Switzerland, September 12-13, 2016
  • PiezoEel: an Energy Harvester for Mountain Stream Monitoring 
    Emery G., Keppner H., Moerschell J., Münch-Alligné C., Rapillard L., Richard S.
    SCCER-SoE Annual Conference 2016, Sion, Switzerland, September 12-13, 2016
  • Extending Geophone Sensitivity for Induced Seismicity Recording 
    Praplan Ch., Moerschell J.
    SCCER-SoE Annual Conference 2016, Sion, Switzerland, September 12-13, 2016
  • Deep Borehole Seismometer Demonstrator 
    Praplan Ch., Cachelin Ch., Moerschell J.
    SCCER-SoE Annual Conference 2016, Sion, Switzerland, September 12-13, 2016
  • Detecting Water through Electric Impedance Measurements 
    Emery G., Ganchinho A., Moerschell J.
    SCCER-SoE Annual Conference 2016, Sion, Switzerland, September 12-13, 2016
  • Deep Borehole Seismometer
    Praplan Ch., Cachelin Ch., Ravedoni Y., Moerschell J.
    SCCER-SoE Annual Conference 2015, Neuchâtel, Switzerland, September 10-11, 2015
  • Mesures FRA en ligne
    Moerschell J.
    FKH Fachtagung, Yverdon-les-Bains, Switzerland, December 5, 2012
  • Monitoring by on-line Impedance Spectroscopy
    Friedli D., Cuenin Y., Praplan B., J. Moerschell J.
    Powertage, Zürich, Switzerland, Juni 12-14, 2012

 

RESEARCH REPORTS (not reviewed)

  • Essais des vibrations générées par un simulateur de séismes
    Moerschell J., Vaccari A., Rapillard L., HES-SO Valais-Wallis, 2014
  • LISA Gravitational Reference Sensor Front End Electronics Breadboard Design Report
    Moerschell J., Praplan Ch., ESA, 2013
  • On-line Generator Monitoring
    Moerschell J., Ganchinho A., Cuenin Y., Rapport final, HES-SO, 2013
  • Micro Electro-biological System
    Moerschell J., Ganchinho A., Rapport final, HES-SO, 2012
  • Picoamperemeter
    Moerschell J., Castellaro Ch., Rapport scientifique, HES-SO, 2012

Additional information

Research interests

Teaching

  • Mechatronic - Electronic

Projects

Press