Cylindrical slot antennas for monitoring the quality of milled rice
This paper presents the use of a cylindrical slot antenna sensor to determine the quality of rice based on the percentage of moisture content and percentage of broken rice. The reflection coefficient of rice were measured using both single and parallel slot sensors of infinite ground plane in the fr...
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| Main Authors: | , , , |
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| Format: | Conference or Workshop Item |
| Published: |
2011
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| Subjects: | |
| Online Access: | http://eprints.utm.my/id/eprint/45714/ http://apps.webofknowledge.com.ezproxy.utm.my/full_record.do?product=WOS&search_mode=GeneralSearch&qid=18&SID=V2RkV8Yc2UnxH4oBVhR&page=1&doc=1 |
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| Institution: | Universiti Teknologi Malaysia |
| Summary: | This paper presents the use of a cylindrical slot antenna sensor to determine the quality of rice based on the percentage of moisture content and percentage of broken rice. The reflection coefficient of rice were measured using both single and parallel slot sensors of infinite ground plane in the frequency range from DC to 6 GHz using a Vector Network Analyzer (VNA). Five varieties of rice with moisture content between 13% and 16% were tested in this work. Calibration equations were established to relate the measured reflection coefficient to moisture content which in turn allows prediction of the percentages of broken rice. From the measurement results, the parallel two slot sensor showed the high sensitivity of reflection coefficient to the moisture content in the rice grain, as well as the percentage of cracked rice in the samples. |
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