Abstract
An automated single-line table egg sorting machine that integrates machine vision and mechatronics principles was developed in this study. The machine was fabricated using low cost and locally available materials. The developed machine was composed of the feeding unit, computing unit and the sorting unit. The conveyor was powered by a 12V DC geared motor, and the sorting arm was actuated by a DC servo motor which positions the arm. A machine vision software, EGGSoTiC, was used in the sorting of the table eggs – moving through a conveyor at 13 cm-s-1. Test for similarity of readings revealed that the developed machine is capable of yielding consistent results with low values of coefficient of variation ranging from 0.38 to 0.85 mm2 and 0.42 to 0.94 g for the projected area and estimated weight, respectively. Results of dynamic test for 100 table egg samples indicated that the machine could sort table eggs with an accuracy of 91% at 2.52 seconds per sample, yielding a projected capacity of 1,426 eggs per hour. Results also indicated that there were no large errors in the estimation of weights yielding a root mean square error of 1.90 g which is not significantly higher than the bias of 0.93 g. Key words: Machine vision, table eggs, sorting, mechatronics.
Highlights
Table eggs are one of the poultry products popularly consumed in the Philippines
This study aims to develop a singleline automated egg sorting machine using machine vision and open source mechatronics
The feeder was constructed from polyvinyl chloride (PVC) pipe which was trimmed and fastened onto the conveyor assembly (Figure 4b)
Summary
Table eggs are one of the poultry products popularly consumed in the Philippines. In 2016, the production of table eggs reached 461,719 metric tons, 3.86% higher than the previous year. The farm gate price of table eggs was 4.31 pesos (PhP) per piece during this year. This production grossed 46,264.34 million pesos (PhP) at current price, posting an 8.36% increase versus the previous year, with the CALABARZON region contributing. 30% of the country’s total egg production (PSA, 2017). Grading of table egg products are being done to avoid losses in the marketing of such products. In the Philippines, table egg products in public markets and supermarkets are usually sorted based on the quality and the size.
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