Design, Development and Calibration of a Portable Capacitive Moisture Meter

Sensors & Transducers

Mahmoud Soltani¹  Reza Alimardani¹ 

[1] Department of Agricultural Machinery Engineering, Faculty of Agricultural Engineering & Technology, University of Tehran, Karaj, Iran;

关键词: Capacitive sensor;    Instrument;    Moisture content;   

DOI  :  

来源: DOAJ

【 摘 要 】

Dielectric properties of grains, fruits and vegetables are used in most fields of agriculture such as microwave drying treatment and precision agriculture. In this paper a portable instrument was designed and developed to predict moisture content of grains and seeds by measuring the dielectric constant of sample. A high correlation was observed between moisture content and dielectric constant. The best result was obtained at 1 MHz frequency. The system was calibrated for wheat, corn, millet, lintel, pea and black eyed pea. Fast response, cheapness and reliability are the main characteristics of this instrument.

【 授权许可】

Unknown