DEVELOPMENT OF AN ELECTRONIC SENSOR FOR DATE SORTING BASED ON MOISTURE CONTENT | ||||
| Misr Journal of Agricultural Engineering | ||||
| Article 16, Volume 26, Issue 4, October 2009, Page 1923-1932 PDF (352.22 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/mjae.2009.107578 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| K.M. Ismail1; K.A. Al-Gaadi2 | ||||
| 1Professor at the Univ. of Alex., Dept. of Agric. Eng., Alex., Egypt. | ||||
| 2Associate Professor at King Saud Univ., Dept. of Agric. Eng., Precision Agriculture Research Chair (PARC), Riyadh, Saudi Arabia. | ||||
| Abstract | ||||
| An electronic date moisture sensor utilizing a Wheatstone bridge circuit and an operational amplifier as a signal conditioner was developed. The sensor was designed to produce a voltage output that was proportional to date moisture content. The voltage output was amplified to activate a DC motor, which in turn could be used to operate a date separating device. Samples of dates of four different local types (Sokari, Rawthana, Om Al-Khashab and Nabtit-Aly) were used at different moisture contents to establish a correlation between the sensor voltage output and date moisture contents. The voltage output was found to be proportional to date moisture content. An output of less than 5.5v was associated with date moisture contents ranging between 2.5% and 26%. However, the voltage output was higher than 6v was associated with date moisture contents of 38% and above. | ||||
| References | ||||
|
Ahmad, S.I. and J.F. Reid. 1991. Computer vision technique for detecting color changes in stressed corn. ASAE Paper No. 91-3052. MI: ASAE.
Al-Janobi, A.A. 2000. Date inspection by color machine vision. Journal of King Saud University. K. S. U., Riyadh, Saudi Arabia, Vol. 12: 61-70.
Barreveld, W.H. 1959. Processing the coastal date. Rome, Italy: United Nations, Food and Agriculture Organization.
Chesson, J.H., P.F. Burkner and R.M. Perkins. 1979. An experimental vacuum separator for dates. Trans. ASAE. 22(1): 16-20.
Heinemann, P.H., R. Hughes, C.T. Morrow, H.J. Sommer, R.B. Beelman, and P.J. Wuest. 1994. Grading mushrooms using a machine vision system. Trans. ASAE 37(5): 1671-1677.
Ismail, K.M. and S.A. Alyahya. 2003. A quick method for measuring date moisture content. Trans. ASAE 46(2): 401-405.
Kandala, C.V.K. and S.O. Nelson. 1990. Measurement of moisture content in single kernels in peanuts: a nondestructive electrical method. Trans. ASAE 32(2): 567-571.
Miller, B.K. and M.J. Delwiche. 1989. A color vision system for peach grading. Trans. ASAE 32(4): 1484-1490.
Nelson, S.O. and K.C. Lawrence. 1992. Sensing moisture content in dates by RF impedance measurements. Trans. ASAE 35(2): 591-596.
Nelson, S.O. and K.C. Lawrence. 1994. RF impedance sensing of moisture content in individual dates. Trans. ASAE 37(3): 887-891.
Ni, B., M.R. Paulsen, K. Liao and J.F. Reid. 1997. Design of an automated corn kernel inspection system for machine vision. Trans. ASAE 40(2): 491-497.
Nilsson, J.W. 1983. Electronic circuits. The operational amplifier. Pp:240-275. Addison-Wesley pub. Co. USA.
Okamura, K. Nancy, M.J. Delwiche and J.F. Thompson. 1991. Ra isin grading by machine vision. ASAE Paper No. 91-7011. ASAE.
Rygg, G.L. 1948. Storage humidity for dates. Date Grower’s inst. Rept. 25: 34-35.
Saudi Ministry of Agriculture. 2007. Statistical indicators on date industry in the ٍSAK. Agricultural research and development affairs, department of studies, planning and statistics, 11th issue. Riyadh, Saudi Arabia.
Saudi Ministry of Agriculture. 2008. Agricultural statistical year book. Agricultural research and development affairs, department of studies, planning and statistics, 21st issue. Riyadh, Saudi Arabia.
Wulfson, D., Y. Sarig and R.V. Algazi. 1989. Preliminary investigation to identify parameters for sorting of dates by image processing. ASAE Paper No. 89-6610. St. Joseph, MI: ASAE. | ||||
|
Statistics Article View: 167 PDF Download: 192 |
||||
