rs485 high-efficiency long-distance data transmission system and method for geophysical exploration

Abstract

The present invention provides an RS485 high-efficiency long-distance data transmission system for geophysical exploration, including downlink input RS485 interfaces, downlink output RS485 interfaces, uplink input RS485 interfaces, uplink output RS485 interfaces, FPGA and A / D conversion chip, the downlink input RS485 interface, downlink output RS485 interface and FPGA form a downlink command transmission channel, and the uplink input RS485 interface, uplink output RS485 interface and FPGA form an uplink data transmission channel. The invention also provides a transmission method of an RS485 high-efficiency long-distance data transmission system for geophysical exploration. The invention provides an effective way for the design of the seismic exploration data transmission system; at the same time, by utilizing the controllability of the RS485 transmission rate, it provides an effective low power consumption mode for the seismic exploration instrument system, which can greatly increase the field standby of the exploration instrument Time is of great significance to improving the efficiency of field operations.

Description

technical field [0001] The invention relates to the technical field of data transmission in geophysical prospecting instruments, in particular to an RS485 high-efficiency long-distance data transmission system and method for geophysical prospecting. Background technique [0002] For large-scale seismic exploration systems, efficient and stable long-distance data transmission is a key issue, which determines the stability of the system and the integrity of the collected data. In the seismic exploration system, there are data transmissions at different rates and distances between acquisition stations, cross stations, and between cross stations and the main control station (instrument vehicle). Among them, due to the large number of collection stations and long distances (such as single-station multi-channel transmission over a distance of 100 meters), an efficient, stable, and low-power data transmission solution is urgently needed. [0003] At present, the more mature long-d...

AI Technical Summary

Problems solved by technology

Due to the limitation of transmission chip performance, it cannot be used in longer distance transmission

The RS485 transmission method is also adopted between the CNPC ES109 system acquisition units. Based on the limitation of the transmission rate, it adopts a dual-channel parallel mode for transmission, resulting in complex system structure and protocol, high power consumption, and low power consumption that cannot meet the requirements of field operations. and long-term continuous work requirements

[0006] From the above analysis of commonly used system transmission schemes, it can be seen that RS485, as a long-distance transmission scheme commonly used in the industry, is also widely used in seismic exploration systems, but the transmission rate is usually low, and the 428XL system supports a maximum transmission rate of 16 Mbps , when shielded twisted pair is used, the maximum transmission distance is 90 meters

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