포토센서를 이용한 풋고추 선별시스템 개발 = Development of Green Pepper Grading System Using Photo Sensor

다국어 초록 (Multilingual Abstract)

The green pepper grading system was developed by recognizing length and the curved segment, Number of grading classification and factors were chosen based on the survey results of farmers. Results were summarized as following.
1. Ninety percent of surveyed farmers grade the green pepper into two classes manually according to the length, curved segment, and color. And about 10% of green peppers are being shipped without being graded, because of its highly labor intensive process.
2. Prototype having two rows of grading system (dimension : 1400×400×700mm) consists of four parts, i.e, pepper supplying device which sends one or two peppers with constant interval, separating device which carries one unit of pepper, grading device which recognizes a pepper according to the length and curved segment by the photo sensor, and discharging and control system which consists of sensors and operating pneumatic cylinder.
3. The bucket elevator type supplying system showed the best performance and it had a 30×60mm size plate mounted with 70˚angle.
4. The performance of the developed grading system showed the success rate of 97.4%. Various shapes of stalk were main error source in photo sensing.
5. The grading rate of the two-row prototype was 34kg/hr, about half of the manual operation. And its grading error was 8.3%, and it was about 20% less than the largest error of manual operation.