Research And Implementation Of Early Warning Technology For Construction Site Safety

As the construction site safety problem appears more and more,China,as a global infrastructure power,attaches great importance to it,so it is necessary to study the early warning technology of construction site safety.Some of the existing warning technologies have single function and can not meet the needs of multiple scenarios.Some accuracy is not high,such as personnel positioning error is too large;Some of them have poor anti-interference and idealized experimental environment.In view of the above problems,this paper conducts research on construction site safety early warning technology.By summarizing the advantages and disadvantages of several schools of construction site safety technology and the research status,the research objectives and contents are determined,and the corresponding research key points are summarized.This paper introduces related technologies and analyzes the early warning process.3d realtime monitoring is realized based on BIM model.Real-time data of construction site is acquired by sensors,uploaded to the system,and displayed by BIM model to achieve the purpose of visualizing data in 3d scene.Model based on Unity3 D implementers and wireless network real-time positioning,AP anchor node and portable terminal equipment carried by the MAC address of the RSSI,and the distance between nodes,design personnel localization algorithm,the location estimate personnel,among them,the paper design the personnel positioning algorithm by gaussian filter optimization RSSI ranging algorithm,exclude items ranging from interference,by classifying the anchor node K neighbor algorithm,select the optimal number of anchor nodes in positioning,through optimizing the weights of weighted centroid localization algorithm,make its more rationalization,proved by the experiment,Compared with the existing personnel positioning algorithm,it has better accuracy and higher efficiency.The problem of crane collision and the solution of deploying sensors are put forward.The construction site safety early warning system designed and developed by the above technology has entered the trial operation stage in the safety management center of liuzhou high-speed railway station.During the operation,the system is smooth and stable,the early warning is timely and accurate,and it can predict ten common construction risks and effectively avoid construction risks.