Human defense engineering is an important part of building design, in order to further improve the quality of human defense engineering design in construction projects, this study introduces BIM technology and non-contact impact echo acoustic frequency method into the health monitoring of human defense engineering. Based on BIM technology, a quality monitoring system for human defense project is designed to realize the comprehensive supervision and control of the quality of human defense project. Then the impact echo acoustic frequency method is combined with YOLOv2-Tiny algorithm to construct the discriminative technology for health monitoring of human defense projects. It is found that the discrimination technology can accurately identify the defect type and location, and the overall prediction accuracy reaches more than 96%. At the same time, the application of BIM technology in the case study avoids the problems in the construction design of the civil defense project and guarantees the construction quality of the civil defense project, and the error between the thickness of the steel pipe concrete member obtained by the proposed discriminative technology and the actual one is less than 2.81%.The fusion of the BIM technology and the impact echo acoustic-frequency method provides a brand-new solution for the quality supervision of the civil defense project.
