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Design of Wireless Low-frequency Vibration Inspection System for Offshore Platform
Author: LiZhiRui
Tutor: YuYan
School: Dalian University of Technology
Course: Microelectronics and Solid State Electronics
Keywords: Offshore platforms Low-frequency structure Vibration detection Wireless sensor networks
CLC: TP274
Type: Master's thesis
Year: 2011
Downloads: 24
Quote: 0
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Abstract
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In recent years, with the deepening of the development of offshore oil and gas resources , the safety and reliability of offshore platform structure has drawn increasing attention . Offshore platform service in the harsh marine environment , the various loads its role will produce significant , sustained vibration , low frequency vibration signal , so the offshore platform structure is a class of low-frequency structures . Its low-frequency vibration detection is an effective means to determine whether the damage of its structure . First of all, the research status of the offshore platform structure detection technology system introduced leads based on the vibration the marine platform detection technology ; discussed wireless sensor network technology used in offshore platform vibration detection ; offshore platform structure vibration characteristics on this basis , analyzing and selecting the study of the mechanism of the low-frequency acceleration sensor . Second , given the overall architecture of a wireless low frequency vibration detection system acquisition node of wireless sensor and wireless data collection centers , hardware integration and software design are described in detail . The wireless communication network structure design star by multiple wireless nodes with a data collection center . The wireless node uses a modular approach to design, constituted by the sensor interface unit , micro processing unit , a storage unit , the wireless communication module , the real - time clock circuit , the power management unit or the like . Data acquisition center by the wireless communication module , serial servers , computer unit . Embedded wireless node micro processing unit program, completion of the vibration data acquisition , preliminary analysis of the data cache , data , wireless transceiver functions . Intelligent acquisition software is embedded in the computer unit of the data collection center to complete the parameter settings of each sensor acquisition nodes , data acquisition , real-time display , storage , and can export data post processing . Finally , design test of the reliability of wireless low-frequency vibration detection system with low-frequency characteristics were verified . The results show that : the wireless low-frequency vibration detection system has a low-frequency performance , high reliability, and laid fast , for the detection of low frequency vibration of offshore platform which has a good prospect of application .
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