Design and validation of wireless low frequency vibration sensor for offshore platform inspection

Offshore platform is the base for ocean oil resources development,and it is an effective means to determine offshore platform′s injuries to inspect its low frequency vibration.A kind of wireless sensor and its acquisition systems for low frequency vibration inspection of offshore platform are presented.Firstly,the wireless low frequency vibration sensor is designed by modularization method,the choice of low frequency accelerometer and the design of power circuit are illustrated.Secondly,the embedded programs of the wireless low frequency vibration sensor and PC′s acquisition software are introduced.Finally,inspection experiments using wireless low frequency vibration sensors on shake table are performed.The experimental results show that,the designed wireless low frequency vibration sensor has the characteristics of high resolution,easy installment,good low frequency performance and reliability,so it is very suitable for fast vibration inspection of offshore platform.