Computer Science
Scientific paper
Jan 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000stin...0075640b&link_type=abstract
Technical Report, Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA United States
Computer Science
Electrometers, Electrostatics, Electric Fields, Sensitivity, Transferring, Binders (Materials), Compatibility, Hazards, Insulation, Ion Currents, Mars Surface, Planetary Geology, Regolith, Robot Arms, Room Temperature, Scoops
Scientific paper
The Mars '01 binder contains an electrometer designed to evaluate the electrostatic nature of the Martian regolith (soil) and atmosphere. The electrometer is part of MECA (Mars Environmental Compatibility Assessment) project. The objective is to gain a better understanding of the hazards related to the human exploration of Mars. The electrometer was designed to fit into the heel of the scoop of the robotic arm. The instrument has four sensor types: (a) triboelectric field, (b) electric-field, (c) ion current, and (d) temperature. The triboelectric field sensor array contains five insulating materials to determine material charging effects as the scoop is dragged through the Martian regolith. The sensor has an electric field sensitivity of 35 kV/cm-V and room temperature drift of approx.3 micro V/sec. The sensor has been operated as low as -60 C where the drift is undetected. This talk with focus on the operating principles of the triboelectric sensors and present some of test results.
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