Application of microwave moisture sensor for determination of oil palm fruits ripeness
This paper describes the development of a low cost coaxial moisture sensor for the determination of moisture content (30 % to 80 % wet-weight basis) of the oil palm fruits of various degree of fruit ripeness. The sensor operating between 1 GHz and 5 GHz was fabricated from an inexpensive 4.1 mm oute...
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter Open
2010
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| Online Access: | http://psasir.upm.edu.my/id/eprint/13236/1/Application%20of%20microwave%20moisture%20sensor%20for%20determination%20of%20oil%20palm%20fruits%20ripeness.pdf |
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| author | Kok, Yeow You Abbas, Zulkifly Khalid, Kaida |
| author_facet | Kok, Yeow You Abbas, Zulkifly Khalid, Kaida |
| author_sort | Kok, Yeow You |
| collection | UPM |
| description | This paper describes the development of a low cost coaxial moisture sensor for the determination of moisture content (30 % to 80 % wet-weight basis) of the oil palm fruits of various degree of fruit ripeness. The sensor operating between 1 GHz and 5 GHz was fabricated from an inexpensive 4.1 mm outer diameter SMA coaxial stub contact panel whic
h is suitable for single fruit measurement. The measurement system consists of the sensor and a PC-controlled vector network analyzer (VNA). The actual moisture content was
determined by standard oven drying method and compared with predicted value of fruit moisture content obtained using the studied sensor. The sensor was used to monitor fruit ripeness based on the measurement of the phase or magnitude of reflection coefficient and the dielectric measurement software was developed to control and acquire data from the VNA using Agilent VEE. This software was used to calculate the complex relative permittivity from the measured reflection coefficient between 1GHz and 5 GHz. |
| first_indexed | 2024-03-06T07:27:45Z |
| format | Article |
| id | upm.eprints-13236 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T07:27:45Z |
| publishDate | 2010 |
| publisher | De Gruyter Open |
| record_format | dspace |
| spelling | upm.eprints-132362015-09-22T06:53:23Z http://psasir.upm.edu.my/id/eprint/13236/ Application of microwave moisture sensor for determination of oil palm fruits ripeness Kok, Yeow You Abbas, Zulkifly Khalid, Kaida This paper describes the development of a low cost coaxial moisture sensor for the determination of moisture content (30 % to 80 % wet-weight basis) of the oil palm fruits of various degree of fruit ripeness. The sensor operating between 1 GHz and 5 GHz was fabricated from an inexpensive 4.1 mm outer diameter SMA coaxial stub contact panel whic h is suitable for single fruit measurement. The measurement system consists of the sensor and a PC-controlled vector network analyzer (VNA). The actual moisture content was determined by standard oven drying method and compared with predicted value of fruit moisture content obtained using the studied sensor. The sensor was used to monitor fruit ripeness based on the measurement of the phase or magnitude of reflection coefficient and the dielectric measurement software was developed to control and acquire data from the VNA using Agilent VEE. This software was used to calculate the complex relative permittivity from the measured reflection coefficient between 1GHz and 5 GHz. De Gruyter Open 2010 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/13236/1/Application%20of%20microwave%20moisture%20sensor%20for%20determination%20of%20oil%20palm%20fruits%20ripeness.pdf Kok, Yeow You and Abbas, Zulkifly and Khalid, Kaida (2010) Application of microwave moisture sensor for determination of oil palm fruits ripeness. Measurement Science Review, 10 (1). pp. 7-14. ISSN 1335-8871 http://www.measurement.sk/2010/S1/p.html#Volume_8 10.2478/v10048-010-0002-x |
| spellingShingle | Kok, Yeow You Abbas, Zulkifly Khalid, Kaida Application of microwave moisture sensor for determination of oil palm fruits ripeness |
| title | Application of microwave moisture sensor for determination of oil palm fruits ripeness |
| title_full | Application of microwave moisture sensor for determination of oil palm fruits ripeness |
| title_fullStr | Application of microwave moisture sensor for determination of oil palm fruits ripeness |
| title_full_unstemmed | Application of microwave moisture sensor for determination of oil palm fruits ripeness |
| title_short | Application of microwave moisture sensor for determination of oil palm fruits ripeness |
| title_sort | application of microwave moisture sensor for determination of oil palm fruits ripeness |
| url | http://psasir.upm.edu.my/id/eprint/13236/1/Application%20of%20microwave%20moisture%20sensor%20for%20determination%20of%20oil%20palm%20fruits%20ripeness.pdf |
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