Abstract
A real-time wireless network architecture for seismic data ac-quisition system based on multi-level radio network is proposed. The sin-gle-chip programmable transceiver Si446x that allows creating the first level of the network is considered. Physical layer with GFSK modulation in the sub-gigahertz band is considered. Data link layer implementation with generic frame structure for a network, operating in synchronous mode, is presented. An algorithm for seismic data accumulating and com-pressing is presented. The comparison of existing and proposed solutions is given.
Highlights
Seismic data acquisition complexes used in geological prospecting work provide concurrent transmission of signals from numerous measuring channels with typical sampling rate of 500–1000 Hz of 24-bit samples
One of the most challenging problems in the development of such systems is the suppression of considerable attenuation in the UHF range to provide radio communication over long distances in conditions of considerable attenuation acceptable for broadband organization of radio communications [1]
The chip contains a built-in temperature sensor, a power tracking circuit (POR), and four input/output ports (GPIO1-4) with various functions assigned to them: control of an external antenna switch, output of various states transceivers, etc
Summary
Seismic data acquisition complexes used in geological prospecting work provide concurrent transmission of signals from numerous measuring channels with typical sampling rate of 500–1000 Hz of 24-bit samples. Such data streams (12000-24000 bps per channel) are transmitted using cable technologies. Wireless data transmission technologies are actively developed at the moment, which should reduce the total area of deforestation during cable laying For these purposes, realtime systems are needed to quickly obtain and assess the quality of seismic data, as well as to monitor the operation of all equipment. The technical characteristics of the above-mentioned complexes and the comparison with the developed architecture will be given in the conclusion
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