A Data Collection Technology of Virtual Reality Simulation System Based on Load Balancing

Aiming at the problem of high load on data collection site caused by a large amount of real-time data are stored in the database in a large-scale virtual reality simulation system. A distributed data collection scheme was proposed. Firstly, this paper introduced the overall architecture of the virtual reality simulation system for subsea production process of oil and gas and analyzed the data flow of the system. Secondly, based on this virtual reality simulation system, a distributed data collection module was designed. The whole data collection module took the distributed database as the core, and adopted an algorithm combining static load distribution and dynamic collection task scheduling to distribute data collection tasks to each site according to the performance of each index of its server. Then, in the process of data collection, the collection task part of the site with larger load was automatically distributed to the site with smaller load in real time, so that the load of each site was balanced.

I. Introduction

In the field of deep-sea oil and gas field development, the installation and maintenance of underwater production facilities in deep-sea environment lacks engineering experience due to the complex and changeable environmental factors [1]. In view of this situation, the virtual reality simulation system for subsea production process of oil and gas independently developed by China University of Petroleum (Beijing) mainly simulated the installation, operation and production of underwater production facilities. Under the conditions of low cost and low risk, operators could rehearse, operate, train and evaluate the equipment installation and maintenance schemes in a virtual environment to overcome this problem. In such a large-scale simulation system, huge back-office data support is often required. The server where the data is collected not only collects a large amount of data in real time during the simulation run, but also cannot cause the problem of data frame loss. However, due to the large amount of data and fast collection speed during the data collection, the utilization rate of CPU(Central Processor Unit) will be too high, which will slow down the operation and cause the operation to be extremely slow or even crash. Therefore, the distributed load balancing data collection technology introduced in this paper avoid the above problems and improve the performance of this virtual reality simulation system.