We study a novel MEMS agricultural sensor, which can measure biological information of plant branches, for IoT platform in smart farming including plant factories. The sensor can make a non-destructive and in-situ measurement of water and nutrient flows through vascular bundles including vessels and sieve tubes in plants.



Fig. Measured water flow rates through vascular bundles: (a)Convetional method, (b)THIS WORK


Fig. (left)Measured water flow rate in lettuce during a day
Fig. (right)Proposed view of a sensor for measurement of water flow rate through vessels and sieve tubes in plants.