A root moisture sensor for plants in microgravity

Details A root moisture sensor for plants in microgravity A root moisture sensor for plants in microgravity

Nov 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994adspr..14..213c&link_type=abstract

Advances in Space Research, Volume 14, Issue 11, p. 213-216.

Computer Science

Scientific paper

Development of components for bioregenerative life-support systems is a vital step toward long-term space exploration. The culturing of plants in a microgravity environment may be optimized by the use of appropriate sensors and controllers. This paper describes a sensor developed for determining the amount of fluid (nutrient solution) available on the surface of a porous ceramic nutrient delivery substrate to the roots of conventional crop plants. The sensor is based on the change in thermal capacitance and thermal conductance near the surface as the moisture content changes. The sensor could be employed as a data acquisition and control sensor to support the automated monitoring of plants grown in a microgravity environment.

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