Abstract
Nowadays, seismic exploration data acquisition (DAQ) systems have been developed into remote forms with a large-scale coverage area. In this kind of application, some features must be mentioned. Firstly, there are many sensors which are placed remotely. Secondly, the total data throughput is high. Thirdly, optical fibres are not suitable everywhere because of cost control, harsh running environments, etc. Fourthly, the ability of expansibility and upgrading is a must for this kind of application. It is a challenge to design this kind of remote DAQ (rDAQ). Data transmission, clock synchronization, data storage, etc must be considered carefully. A fourth-hierarchy model of rDAQ is proposed. In this model, rDAQ is divided into four different function levels. From this model, a simple and clear architecture based on a distributed storage area network is proposed. rDAQs with this architecture have advantages of flexible configuration, expansibility and stability. This architecture can be applied to design and realize from simple single cable systems to large-scale exploration DAQs.
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