An On-site Pipeline Inspection and Modification System for MEP Conflict Resolution

• Main Authors: Liang-Ting Tsai, 蔡亮廷
• Other Authors: Shih-Chung Kang
• Format: Others
• Language: en_US
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/8xsjja

碩士 === 國立臺灣大學 === 土木工程學研究所 === 106 === MEP conflict resolution is a complicated process since the multidisciplinary coordination of the MEP engineering. The issues of ineffective collision detection, as-built deviations, and constructability and maintainability always happen in the construction stage unexpectedly. An on-site pipeline inspection and modification system is required. Therefore, this research aims at developing an on-site pipeline inspection and modification system using the Augmented Reality (AR) and path-planning algorithm. The system allows the user to compare the existing pipe model with the as-built pipeline and re-plan the paths of conflicted pipes to obtain a solution without conflicts. The system includes planning module and interaction module. The planning module defines five constraints, which are slope, turning, elevation relation and proximity constraints to consider current MEP design criteria. The constraints are embedded into the A* planning algorithm to search the solution paths with a high searching speed. The interaction module is developed base on the AR visualization technology to link the information from virtual model to the real world for the on-site user. We implemented the system on a mobile device using game engine and conducted performance tests in different diameters of searching girds and priorities of pipes to evaluate the calculating time and planning result. The result shows that in both room and aisle space scenario, the system can obtain a set of path solution with approximately 10 seconds for all the pipes complying with the pre-defined MEP design requirements in the groups of 0.15 and 0.2 meters grid sizes. The system is expected to provide an effective and efficient conflict resolving method to improve the MEP construction process and the future maintenance.