【摘要】 目前,装配式建筑的发展与BIM技术结合紧密,然而常用的三维模型重建方法均存在缺少内部构件或语义信息等缺点,并且应用于装配式建筑不具有针对性。因此,本文提出自组织建模方法,其关键技术之一是预制构件的无线定位技术。本文建立自组织建模系统,包括基于惯性测量单元(IMU)的构件无线定位终端及远程监控中心;采用业务流程建模符号分析自组织建模流程;设计预制构件编码以解决其身份信息识别的问题。进一步,研究预制构件定位原理。定位原理主要包括基于四元数法的姿态角解算算法与基于二次时域积分的相对位移解算算法,以根据构件最终吊装位置自动生成建筑信息模型。最后,本文设计一个案例,实验结果表明位移的相对误差在5%左右,验证了该方法的可行性。更多还原

【Abstract】 At present,the development of prefabricated buildings is inextricably bound up with BIM technology. However,for traditional methods of reconstructing 3 D models,there are some disadvantages,such as lack of uncovered building components or semantic information,and these methods are not specifically applied for prefabricated buildings. Therefore,a self-organized modeling method for prefabricated buildings is proposed in this paper. One of the key technologies is wireless positioning of prefabricated components. Firstly,a self-organized modeling system is built with an IMU-based wireless device and a remote monitoring center. Also,this paper analyzes the modeling process by using business process modeling notation,and the coding method is designed to identify different prefabricated components. Further,the positioning principle of prefabricated components is studied.The quaternion-based algorithm and quadratic time-domain-integration-based algorithm are developed for the attitude angle and displacement calculation,respectively. The building information model can be automatically generated according to the final position of components. Finally,a practical case is designed and the test results show that the relative error of displacement is 5% approximately. The feasibility of this method is verified.更多还原