Leaf Sensor for Stomata Transpiration Monitoring Using Temperature and Humidity

This paper presents a leaf sensor which was designed for stomatal transpiration detection. The sensor consists of a thermocouple, a humidity sensor and a programmed microcontroller. The thermocouple measures temperature difference between the leaf and its surrounding atmosphere while relative humidity of the atmosphere was recorded. The sensor design was verified with the standard tool and the image of stomata captured with a high-gain camera lens. From the experimental results, data collected from the developed sensor indicates the stomatal status. This proves the potentiality of the proposed sensor for stomatal transpiration detection.

[1]  A. Galston.  Plant Physiology , 1967, Nature.

[2]  Significance of remotely sensed evapotranspiration in plant life: A review , 2015, 2015 Fourth International Conference on Agro-Geoinformatics (Agro-geoinformatics).

[3]  Yang Zhao,et al.  Based on remote sensing processing technology estimating leaves stomatal density of Populus euphratica , 2011, 2011 IEEE International Geoscience and Remote Sensing Symposium.

[4]  Mohd Nazip Suratman,et al.  Stomatal conductance, chlorophyll content, diameter and height in different growth stages of rubber tree (Hevea brasiliensis) saplings , 2011, 2011 IEEE Symposium on Business, Engineering and Industrial Applications (ISBEIA).

[5]  K. G. McNaughton,et al.  Stomatal Control of Transpiration: Scaling Up from Leaf to Region , 1986 .

[6]  Hernan S. Alar,et al.  Utilizing a Greenhouse Activities Streamlining System Towards Accurate VPD Monitoring for Tropical Plants , 2017, 2017 International Conference on Vision, Image and Signal Processing (ICVISP).

[7]  Patrick S. Schnable,et al.  Tracking of water movement dynamics inside plants using leaf surface humidity sensors , 2017, 2017 IEEE 12th International Conference on Nano/Micro Engineered and Molecular Systems (NEMS).

[8]  T. Kozai,et al.  Control of vapor pressure deficit (VPD) in greenhouse enhanced tomato growth and productivity during the winter season , 2015 .