A Centralized Strong Seismic Oscillation Monitoring System

Abstract

Strong seismic oscillation response characteristics of Wind Power Tower and Dam are important basis for rapid assessment the damage of such structure after earthquake; Strong seismic oscillation monitoring is also an important part of this Power station structure’s safety monitoring system. However, the existing strong seismic oscillation monitoring system has some defects, such as high cost of equipment and maintenance, automation analysis ability is not strong and electromagnetic interference is weak. A new centralized strong seismic oscillation monitoring system is designed in this paper: First of all, we designed a centralized strong seismic oscillation monitoring recorder which has 24 channels and designed a kind of waterproof accelerometer. Then, a practical and effective solution is proposed for the common 50Hz power frequency interference and error triggering. Finally, we design a set of remote data receiving and on-line analysis software, which can automatic analysis and report timely, it is easy to management too. Compared to the traditional distributed strong seismic oscillation monitoring system, this new system has the advantages of low equipment cost, unattended, automatic processing of strong seismic oscillation monitoring events, small probability of false triggering, the parameters such as intensity can be timely reported, and it can also achieve the interaction with smart phones through SMS, e-mail. This new centralized system has been deployed in a plurality of Water Power Stations and Wind Power Stations. Recently several strong earthquake events have verified the main characteristics and reliability of this system.