基于GPS-UWB组合定位技术的缆机施工防碰研究

防止高拱坝缆机施工过程中碰撞事故的发生对工程施工安全意义重大。在解释缆机自身结构、运行方式、施工环境等特点的基础上，阐明了缆机运动状态与避免碰撞间的本质关系；结合GPS与UWB，通过定位精度及遮挡试验研究，设计了满足缆机施工定位精度要求的组合定位系统；以定位结果为依据制定缆机碰撞检测方法，并建立距离和时间预警模型；通过模型试验检验了防碰系统的实用性和可靠性，试验结果表明，该防碰系统能够在缆机运行过程中对可能发生的碰撞情况进行检测并及时作出预警。

Anti-collision in cable crane construction based on integrated GPS-UWB positioning technology

Prevention of cable crane collision accidents in high arch dam construction is of great significance. This paper expounds the relation between the cable cranes’ movement and collision preventing measures based on an explanation of the characteristics of cable cranes’ structure, operating mode, and working environment. To meet the location monitor demand in cable crane construction, we conduct an experimental study on the accuracy in crane positioning and the anti-occluding measures, and design an integrated positioning system that combines the GPS and UWB positioning technologies. Then, based on the positioning data, a collision detecting method and a distance and time warning model are developed. Finally, we verify the applicability and reliability of this anti-collision system using model tests, and show that the system is successful in detecting possible collision accidents and issuing timely warnings in cable crane construction.