Design and Fabrication of a Watermelon Ripeness Tester Using Matlab Software GUI
Journal of Engineering Research and Reports,
A non-destructive way to determine the ripeness of watermelon is very difficult, by outward characteristics such as size or external colour and used methods include different limitations. In this study a simple and intelligent method to determine the ripeness of watermelon was designed and developed by integrating a conventional method with electronics device, the ripeness of watermelon can be determined easily and reliable. Microphone was placed under the fruit sample to record a thumping signal. The recorded signals were converted into Fast Fourier Transform (FFT) waveform using MATLAB Software. The patterns of FFT waveforms were analysed using average magnitude at the frequency between 100 Hz and 4000 Hz to classify the ripeness. The average magnitude of was within the range of 0.00019 to 0.00030, and the magnitudes below 0.00025 were termed unripe and magnitudes above 0.00025 were termed ripe. Recommendations for further studies were stated.
- sound frequency
How to Cite
Jarret B, Bill R, Tom W, Garry A. Cucurbits germplasm report. Watermelon National Germplasm System, Agricultural Service, U.S.D.A. 1996;29-66.
Anons A. Nasarawa State Agricultural Development Programme, Annual Crop Area and Yield Survey (CAYS), Lafia, Nasarawa State. 2006;4-8.
Brezmes J, Fructuoso LL, Llobet E, Vilanova X, Recasens I, Orts J, Saiz G, Correig X. Evaluation of an Electronic Nose to Assess Fruit Ripeness. IEEE Sensors J. 2005;5(1):97-108.
Stone ML, Armstrong PR, Zhang X, Brusewitz GH, Chen DD. Watermelon maturity determination in the field using acoustic impulse impedance techniques. Trans. of the ASAE. 1996;39:2325–2330.
Xiuqin R, Yibin Y. Inspection of watermelon maturity by testing transmitting velocity of acoustic wave. Agric. Mech. in Asia, Africa and Latin America. 2006; 37(4):41-45.
Farah WB. Intelligent watermelon ripeness determination; 2014.
(Accessed February 2020)
Chuma Y, Shiga T, Hikida Y. Vibrational and impact response properties of agricultural products for non-destructive evaluation of internal quality (Part I). J. Japan. Society of Agric. Mach. 1977; 39(3):335-341.
Yamamoto H, Haginuma S. Dynamic viscoelastic properties and acoustic properties of watermelons. Report of Nat. Food Res. Inst. 1984;44:30-35.
Sasao A. Impact response properties of watermelons in growth process. J. Japan. Society of Agric. Mach. 1985;7(3):355- 358.
Kawamura T, Nishimura I. Studies on the physical property of watermelon (Part I J. Japan. Society of Agric. Mach. 1988;50(2): 85-92.
Sarig Y. Potential applications of artificial olfactory sensing for quality evaluation of fresh produce. J. Agric. Eng. Res. 2000; 77(3):239–258.
Abstract View: 991 times
PDF Download: 618 times