Basic Study for the Development of Teat Cup Handling System Operated by a Robot

로봇에 의한 유두컵 착탈 시스템 개발을 위한 기초 연구

The objective of this study was to determine the teat locations and to develop a teat cup handling system operated by a robot. The results of this study were summarized as follows: 1. The teat cup attaching and detaching operation system developed in this study consists of a control computer, a five-dimensional robot(PERFORMER-MK2), a DC servo gripper, a robot controller, two CCD-cameras (WV-vp410), an image grabber board(DT3153), a model cow, and a teat cup unit. 2. The coordinates of teat locations were measured by a stereo image processing unit. The error ranges of teats coordinates measured were (x, y, z) = (0.83, 1.95, 0.81) mm. When those were transferred into the Robot Coordinate System(RCS) coordinate, the total error ranges measured were x = 0.9 mm, y = 2.0 mm, z = 0.9 mm. 3. The rates of success of teat cup attaching and detaching operation by a robot system were 91.5% on average; the operation time needed were 27.8 sec. Total working hours for the teat cup handling including image processing were 86.1 sec.

본 연구는 로봇착유기 개발을 위한 기초연구로서 유두위치 측정장치와 로봇제어 시스템을 구성하고 그 성능을 분석하고자 수행되었으며 그 결과는 다음과 같다. 1. 유두인식은 스테레오 측량법에 기초한 이미지 장치로 처리했으며 유두인식오차는 (x, y, z) = (0.83, 1.95, 0.81)mm이다. RCS로 좌표값을 변환했을 때 시스템 전체의 오차는 x = 0.9mm, y = 2.0mm, z = 0.9mm였다. 2. 로봇 유두컵 착탈 시스템의 로봇 착탈 성공률은 평균 91.5%로 나타났다. 작업시간은 27.8sec였으며, 이미지 처리를 포함한 전체 작업시간은 86.1sec로 나타났다.