Portable Underwater Acoustic Buoy Monitoring System

Maritime buoyage system is a kind of maritime device which can be separated from ships and warships,away from ship noise,and work long time.So maritime buoyage system has obvious advantages compared with the traditional shipboard maritime measuring equipment.At present,maritime buoy system has received more attention and played an important role in optics,tides and other field,and they are in replaceable.In the field of underwater acoustic measurement,along with the change of ocean situation,underwater acoustic measurement has been applied in environmental monitoring,ocean strategy,and bio diversity protection.The means of underwater acoustic measurement are gradually enriching,underwater acoustic buoy system emerged as the times require.Underwater acoustic buoy monitoring system is not only a general piece of underwater acoustic measurement equipment which has the function of signal acquisition and simple analysis,but also can be laid in water field as required and work unmanned.Up to now,the existing underwater acoustic buoy systems have the disadvantages of large volume and high loss of power.These shortcomings result in difficulties in laying buoys and short working time.Focusing on these problems,this paper designs a portable underwater acoustic buoy monitoring system.This paper will elaborate the system designing theory,designing scheme and designing process from three aspects: firstly,overall design,that is system function setting,performance parameter setting,product styling setting and so on;secondly,hardware design,that is hardware selection,interface design and system assemble;thirdly,software design,that is systemcontrol software design.The portable underwater acoustic monitoring buoy system designed in this paper has the following characteristics:(1)The system is flexible and portable,easy to lay and recycle;(2)The system has a wide band high sampling,which can collect signals with large frequency range and improve the data signal-to-noise ratio and data accuracy;(3)The system has the function of WiFi communication,which can transmit the collected data to the server in real time.In this paper,the portable underwater acoustic buoy monitoring system will be applied in frequency dispersion curves measurement,multistatic echo measurement and passive location experiment,the experimental data shows that this system has certain reliability and stability.