조선후기에 제작된 輪圖에 관한 연구 - 규장각 소장 윤도의 구성방식과 논리체계를 중심으로 -

Abstract

Yundo(輪圖) is a kind of compass, and it was used as a navigation tool and a judging instrument for a lucky or unlucky site. There are many types of Yundo. This thesis is about the Yundo which was produced by the national agency in 1848Joseon dynasty. Yundo for this thesis is very special because it was written an exact producing date and a product agency. This Yundo is composed with 24-layers of the concentric circles and the contented letters and signs are reflected by a specific theoretical system. The theoretical system of Yundo is based on EumYangron(陰陽,yin_yang), Ohaengron(五行, five element) and Yeok(易, Iching). Yundo is a crystallized object with all of the oriental sciences. The functions of Yundo can be summarized as following. The first is to pick out of the bad orientation of the front and back orientation in the building. The second is to find another specific door direction for a counter part door. The third one is to identify a good direction for a specific stem of a mountain. There are many scientific aspects in Joseon Yundo. At first, there is a consideration of a magnetic declination. The declination value was decided as 7.5° between needle-Bong(縫針) and needle-Jeong(正針). An allowable error of an angle degree is 1° as the deciding orientation owe to divide 1/360 for a circle. The most important meaning of a theoretical system is the connection with the sky and the earth by Yundo. The oriental conception about the Big Dipper is reflected in the theoretical system for Yundo. Yundo is used as deciding direction for aspects of space mainly and it is also often used as deciding time. ChunGan(天干) and JiJi(地支) are the oriental barometer for identifying time and space, and also it is the signatures of transferring each other. The future study should be followed as Yundo and related construction examples.