High speed data communication plate for geophysics exploration

Abstract

The invention discloses a high-speed data transfer board used for geophysical exploration, wherein, a data interface module is connected with an upper level transfer board and a lower level transfer board which are used for receiving and balancing upstream data from a back level transfer board and sending the upstream data to a deserializing module or carrying out preemphasis on sending voltage of the upstream data; the deserializing module and the data interface module are connected to deserialize the upstream data from the back level transfer board, then the converted serial upstream data is sent to a field programmable logic device or the upstream data sent to the up level transfer board is deserialized and then sent to the data interface module; the field programmable logic device and the deserializing module are connected to process and store the upstream data, and the processed upstream data is sent to the deserializing module. The invention can improve the collection capacity of seismic data and the reliability and stability of seismic data collection with long cable and high density.

Description

technical field [0001] The invention relates to the field of geophysical prospecting, in particular to a high-speed data transmission board for geophysical prospecting. Background technique [0002] Seismic data acquisition system is the most critical equipment in seismic exploration. Seismic exploration operation requires receiving and recording seismic waves without distortion. Seismic data acquisition system must have the ability of large dynamic range, low noise, low drift, wide frequency band and suppression of interference waves. [0003] Seismic data acquisition systems often use multi-sensors to acquire seismic waves, high sampling, 24bit analog-to-digital converters and real-time seismic data acquisition technology to achieve the acquisition and reception of seismic data. [0004] Real-time transmission of seismic data is an important technology in geophysical seismic data acquisition. It needs to complete the real-time transmission of multi-channel, high-resolution...

AI Technical Summary

Problems solved by technology

In production practice, if the seismic acquisition equipment adopts the optical fiber transmission technology, the cost of the cable will be increased, and at the same time, the optical fiber insertion loss is large, and the stability is low; if the seismic acquisition equipment adopts the electrical transmission technology, the amount of transmitted data is small, but it is not conducive to Realize long cable high-density seismic data acquisition and transmission

At the same time, it is found that it is very difficult to make optical fiber connections. The optical signal transmission has insertion loss of the optical fiber interface, which has extremely high technical requirements for the optical connector itself. However, the seismic acquisition system commonly used for electrical signal transmission currently transmits a relatively small amount of seismic data. Small

In seismic exploration and production, it is found that the optical fiber connector is easily dirty and the unreliable optical fiber docking is easy to cause data transmission interruption, resulting in low working efficiency of the seismic acquisition system

At the same time, due to the high power consumption of the photoelectric conversion device, the length of the acquisition cable is limited

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