Seismic data transmission method and device, electronic equipment and storage medium

Abstract

The invention discloses a seismic data transmission method and device, electronic equipment and a storage medium, and relates to the technical field of data processing, and the method comprises the steps: transmitting seismic data collected by a collection module to a superior transmission module or a forwarding module at a first rate through a transmission module; transmitting the seismic data transmitted by the transmission module to a superior forwarding module or a lumped module at a second rate by using the forwarding module; wherein the second rate is higher than the first rate; and transmitting the seismic data to a recording system by using the lumped module. The distance in the same working section is short, the seismic data can be transmitted at the first rate with the low rate, the distance between the working sections may be long, the seismic data can be transmitted at the second rate with the high rate, the structural characteristics of the seismic data acquisition system are fully considered, and the seismic data acquisition efficiency is improved. And the transmission efficiency of the seismic data can be improved.

Description

Technical Field

[0001] The present application relates to the field of data processing technology, and in particular to a seismic data transmission method, device, electronic equipment and storage medium. Background Art

[0002] After collecting seismic data in the ocean, the data acquisition system usually needs to transfer the seismic data to a storage system for storage for subsequent analysis. However, the transmission efficiency of current seismic data transmission solutions is relatively low, which in turn affects the efficiency of seismic data collection. Summary of the invention

[0003] The main purpose of the embodiments of the present application is to provide a seismic data transmission method, device, electronic device and storage medium to improve the transmission rate of seismic data.

[0004] To achieve the above-mentioned purpose, an embodiment of the present application provides a seismic data transmission method in one aspect, the method is applied to a seismic data acquisition system, the seismic data acquisition system includes a recording system and multiple working sections, each of the working sections includes a forwarding module, multiple transmission modules and multiple acquisition modules, each of the working sections is connected in sequence through each of the forwarding modules, and the forwarding module in the uppermost working section serves as a lumped module; the method includes the following steps:

[0005] Using the transmission module to transmit the seismic data collected by the acquisition module to the upper transmission module or the forwarding module at a first rate;

[0006] Using the forwarding module to transmit the seismic data transmitted by the transmission module to the upper forwarding module or the aggregation module at a second rate; wherein the second rate is higher than the first rate;

[0007] The seismic data is transmitted to the recording system using the lumping module.

[0008] In some embodiments, the using the transmission module to transmit the seismic data acquired by the acquisition module at a first rate to the upper-level transmission module or the forwarding module comprises at least one of the following steps:

[0009] Using the transmission module to transmit the seismic data collected by the collection module at this level to the transmission module or the forwarding module at an upper level at the first rate;

[0010] Alternatively, the transmission module is used to transmit the seismic data transmitted by the lower-level transmission module to the upper-level transmission module or the forwarding module at the first rate.

[0011] In some embodiments, the method of using the transmission module to transmit the seismic data collected by the collection module at the current level to the transmission module or the forwarding module at the upper level at the first rate includes the following steps:

[0012] Equalizing and shaping the seismic data collected by the acquisition module at this level to obtain first serial seismic data;

[0013] Determine a recovered clock signal based on the first serial seismic data;

[0014] converting the first serial seismic data from a serial format to a parallel format according to the recovered clock signal to obtain first parallel seismic data;

[0015] Performing decoding operations and descrambling operations on the first parallel seismic data in sequence to obtain second parallel seismic data;

[0016] Frame the second parallel seismic data according to the data frame format of the acquisition module at this level to obtain third parallel seismic data;

[0017] performing a scrambling operation and an encoding operation on the third parallel seismic data in sequence to obtain fourth parallel seismic data;

[0018] converting the fourth parallel seismic data from a parallel format to a serial format to obtain second serial seismic data;

[0019] The second serial seismic data is transmitted to the upper transmission module or the forwarding module at the first rate.

[0020] In some embodiments, the method of using the forwarding module to transmit the seismic data transmitted by the transmission module to the upper-level forwarding module or the aggregation module at the second rate comprises at least one of the following steps:

[0021] Using the forwarding module, the seismic data transmitted by the transmission module of the working section of the current level is transmitted to the forwarding module or the aggregation module of the upper level at the second rate;

[0022] Alternatively, the forwarding module is used to transmit the seismic data transmitted by the transmission module of the lower working section to the upper forwarding module or the aggregation module at the second rate.

[0023] In some embodiments, the method of using the forwarding module to transmit the seismic data transmitted by the transmission module of the working section of the current level to the forwarding module or the aggregation module of the upper level at the second rate includes the following steps:

[0024] The seismic data collected by each of the collection modules in the working section of this level are respectively equalized and shaped to obtain a plurality of first serial seismic data;

[0025] Determine a corresponding recovered clock signal according to each of the first serial seismic data;

[0026] Converting the first serial seismic data from a serial format to a parallel format according to each of the recovered clock signals to obtain a plurality of first parallel seismic data;

[0027] Performing decoding operations and descrambling operations on each of the first parallel seismic data in sequence to obtain a plurality of second parallel seismic data;

[0028] Frame each of the second parallel seismic data according to the data frame format of the forwarding module at this level to obtain third parallel seismic data;

[0029] performing a scrambling operation and an encoding operation on the third parallel seismic data in sequence to obtain fourth parallel seismic data;

[0030] converting the fourth parallel seismic data from a parallel format to a serial format to obtain second serial seismic data;

[0031] The second serial seismic data is transmitted to the upper level forwarding module or the aggregation module at the second rate.

[0032] In some embodiments, the transmitting the seismic data to the recording system using the lumping module comprises at least one of the following steps:

[0033] Using the lumping module to transmit the seismic data transmitted by the transmission module of the working section of this level to the recording system;

[0034] Alternatively, the seismic data transmitted by the forwarding module of the lower-level working section is transmitted to the recording system by means of the lumping module.

[0035] In some embodiments, the transmitting the seismic data to the recording system using the lumping module comprises the following steps:

[0036] The seismic data is transmitted to the recording system via optical fiber using the lumping module.

[0037] To achieve the above object, another aspect of the embodiment of the present application provides a seismic data transmission device, the device comprising:

[0038] A data transmission unit, used to transmit the seismic data collected by the collection module to the upper transmission module or the forwarding module at a first rate using the transmission module;

[0039] A data forwarding unit, used to use the forwarding module to transmit the seismic data transmitted by the transmission module to the upper forwarding module or the aggregation module at a second rate; wherein the second rate is higher than the first rate;

[0040] A data aggregation unit is used to transmit the seismic data to the recording system using the aggregation module.

[0041] To achieve the above-mentioned purpose, another aspect of an embodiment of the present application proposes an electronic device, which includes a memory and a processor, wherein the memory stores a computer program, and the processor implements the above-mentioned seismic data transmission method when executing the computer program.

[0042] To achieve the above-mentioned purpose, another aspect of an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the above-mentioned seismic data transmission method is implemented.

[0043] The embodiments of the present application include at least the following beneficial effects:

[0044] The present application can use the transmission module to transmit the seismic data collected by the acquisition module to the upper transmission module or forwarding module at a first rate; use the forwarding module to transmit the seismic data transmitted by the transmission module to the upper forwarding module or the aggregation module at a second rate; wherein the second rate is higher than the first rate; and use the aggregation module to transmit the seismic data to the recording system. If the distance within the same working section is short, the present application can use the first rate with a lower rate to transmit the seismic data, while the distance between each working section may be far, and the present application can use the second rate with a higher rate to transmit the seismic data, which fully considers the structural characteristics of the seismic data acquisition system, thereby improving the transmission efficiency of the seismic data. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0046] Figure 1 An example diagram of a transmission scenario of a seismic data transmission method provided in an embodiment of the present application;

[0047] Figure 2 A schematic diagram of a flow chart of a seismic data transmission method provided in an embodiment of the present application;

[0048] Figure 3An example flow chart of step S201 provided in an embodiment of the present application;

[0049] Figure 4 A hardware structure diagram of a collection node transmission module provided in an embodiment of the present application;

[0050] Figure 5 A hardware structure diagram of a forwarding module of a forwarding node provided in an embodiment of the present application;

[0051] Figure 6 A hardware structure diagram of the forwarding node aggregation module provided in an embodiment of the present application;

[0052] Figure 7 A logical flow chart of data transmission of a collection node provided in an embodiment of the present application;

[0053] Figure 8 A logical flow chart of data transmission of a forwarding node provided in an embodiment of the present application;

[0054] Fig. 9 A schematic diagram of the structure of a seismic data transmission device provided in an embodiment of the present application;

[0055] Fig.10 A schematic diagram of the hardware structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the embodiments of the present application. They are only examples of devices and methods consistent with some aspects of the embodiments of the present application as detailed in the attached claims.

[0057] It is understood that the terms "first", "second", etc. used in this application can be used to describe various concepts in this article, but unless otherwise specified, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another concept. For example, without departing from the scope of the embodiment of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the words "if" and "if" as used herein can be interpreted as "at the time of" or "when" or "in response to determination".

[0058] The terms "at least one", "multiple", "each", "any", etc. used in this application, at least one includes one, two or more, multiple includes two or more, each refers to each of the corresponding multiple, and any refers to any one of the multiple.

[0059] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0060] Before describing the embodiments of the present application in detail, some related technologies involved in the embodiments of the present application are first described as follows:

[0061] Marine 3D seismic data acquisition is usually completed by a ship towing a seismic source and multiple seismic streamers (buoyant cables equipped with hydrophones). Each streamer is connected by a leader section and towed by a corresponding cable winch. During the seismic data acquisition process, the ship travels in the waters above the seabed target according to a predetermined route, dragging the streamer in the direction of the survey line while exciting seismic waves through the seismic source, and the hydrophones placed in the floater in a specific arrangement record the signals transmitted from the seismic waves downward to the underground reflective layer and returned.

[0062] The high-precision small 3D seismic acquisition system adopts a "single leader segment-multiple working segments" right-angle comb-shaped topology structure, breaking through the conventional 3D seismic data acquisition and transmission and underwater equipment expansion towing mode. The data collected by multiple seismic cables are transmitted back through the underwater lumping module, breaking away from the limitations of the ship-borne winch and the number of leader segments on the cable capacity, greatly reducing the requirements and production costs of 3D seismic ships and equipment, and effectively expanding the number of cables and survey capabilities of existing 3D ships. In view of the right-angle comb-shaped system structure characteristics and the system's long-distance high-speed data transmission requirements, the present invention proposes a low-speed-high-speed hybrid pipeline seismic data transmission method, determines the data transmission mode by calculating the data transmission rate, and completes the hardware and logic design of data transmission.

[0063] There are mainly the following data transmission methods:

[0064] 1) Optical transmission. Optical transmission generally uses optical fiber for data transmission. Optical fiber is the abbreviation of optical fiber. Optical fiber is a fiber made of plastic or glass. It is a light-transmitting medium that uses total reflection of light in these materials for transmission. It includes a core, cladding and sheath. The transmission rate of optical fiber can reach 10Gbps.

[0065] 2) RS485 transmission. RS485, also known as TIA / EIA-485, is generally used for drivers and receivers in serial communication systems. It adopts differential reception and balanced transmission, uses differential lines for data reception, and sends symmetrical modulated signals. For the transmitter, a differential signal level of +2 to +6V indicates a logic high level, and a differential signal level of -2 to -6V indicates a logic low level. For the receiver, a differential signal level above 200mV indicates a logic high level, and a differential signal level below -200mV indicates a logic low level. The maximum transmission distance of RS485 is 12km, and the transmission rate is inversely proportional to the transmission distance. RS485 supports multi-point systems, and multiple receivers can be combined to form a system network through a linear multi-point bus connection.

[0066] 3) LVDS (Low-voltage differential signaling). LVDS is also known as TIA / EIA-644. It generally uses extremely low peak-to-peak voltage for high-speed differential transmission of data. It uses 1.2V bias voltage as the common-mode voltage. The peak-to-peak value of the differential signal is about 350mV. It can achieve high-speed transmission by using a constant current source current drive. The theoretical data transmission rate can reach up to Gbps level.

[0067] 4) Ethernet. Ethernet communication technology is a computer local area network technology based on the IEEE 802.3 standard. All communicators in the network are connected to a cable. When sending data, the communicator packages the sent data and broadcasts it on the cable. All other communicators can receive the sent data packets and determine whether to copy the data packets for processing by comparing the destination port address in the data packets. Ethernet communication technology is divided into standard Ethernet, Fast Ethernet, Gigabit Ethernet and 10 Gigabit Ethernet. The transmission rate of standard Ethernet is 10Mbps, and it can be connected using a variety of transmission media such as coaxial cable, twisted pair and optical fiber. With the development of the network, there are higher requirements for the speed of the network, and Fast Ethernet, Gigabit Ethernet and 10 Gigabit Ethernet have gradually developed. The transmission rate of Fast Ethernet is 100Mbps, and the transmission rates of Gigabit Ethernet and 10 Gigabit Ethernet are 1000Mbps and 10Gbps respectively.

[0068] By comparing the above four transmission methods, optical fiber has a high transmission rate and good anti-interference ability, but the optical fiber is easy to bend and has low mechanical strength. The RS485 data transmission method has a simple interface, a long transmission distance, and good signal anti-interference ability, but the transmission rate decreases with the increase of the transmission distance. The LVDS data transmission method is similar to RS485, with a simple interface, low power consumption, and good signal anti-interference ability, but because the LVDS transmission level is between 0.85V and 1.55V, the signal attenuation is large during long-distance transmission, and the reliability of signal transmission is low. The Ethernet data transmission method is mature in application, with high transmission rate and long transmission distance, but the transmission rate of the Ethernet transmission method is fixed and cannot be customized according to system requirements. At the same time, Ethernet requires multiple pairs of transmission lines to complete data transmission. The increase in transmission lines will increase the probability of system failure and reduce the reliability of system operation.

[0069] By analyzing and comparing the advantages and disadvantages of four data transmission methods, and comprehensively considering factors such as transmission rate, transmission distance, reliability and system cost, this application proposes a low-speed-high-speed hybrid pipeline seismic data long-distance high-speed transmission method.

[0070] The embodiments of the present application provide a method, device, electronic device and storage medium for transmitting seismic data. The technical solution of the present application includes: using a transmission module to transmit the seismic data collected by the acquisition module to an upper-level transmission module or a forwarding module at a first rate; using a forwarding module to transmit the seismic data transmitted by the transmission module to an upper-level forwarding module or a lumping module at a second rate; wherein the second rate is higher than the first rate; and using a lumping module to transmit the seismic data to a recording system. If the distance within the same working section is short, the present application can use a first rate with a lower rate to transmit seismic data, while the distance between each working section may be far, and the present application can use a second rate with a higher rate to transmit seismic data, which fully considers the structural characteristics of the seismic data acquisition system, thereby improving the transmission efficiency of seismic data.

[0071] An embodiment of the present application provides a seismic data transmission method, which can be applied to a seismic data acquisition system, wherein the seismic data acquisition system includes a recording system and multiple working sections, each of the working sections includes a forwarding module, multiple transmission modules and multiple acquisition modules, and each of the working sections is connected in sequence through each of the forwarding modules, and the forwarding module in the top-level working section serves as a lumped module.

[0072] For ease of understanding, this embodiment provides a transmission scenario example diagram of a seismic data transmission method. Figure 1 .

[0073] The low-speed data is seismic data transmitted at a first rate, and the high-speed data is seismic data transmitted at a second rate.

[0074] Next, a seismic data transmission method provided in an embodiment of the present application is described, referring to Figure 2 The method may include but is not limited to steps S200 to S220, which are as follows:

[0075] S200: Using the transmission module to transmit the seismic data acquired by the acquisition module to the upper transmission module or the forwarding module at a first rate.

[0076] Specifically, each acquisition module on each working section acquires seismic data, and then transmits it to an upper-level transmission module or a forwarding module through a transmission module.

[0077] Further, step S200 may include at least one of S201 or S202:

[0078] S201: Using the transmission module, the seismic data collected by the collection module at the current level is transmitted to the transmission module or the forwarding module at the upper level at the first rate.

[0079] Specifically, the transmission module and the acquisition module in the same acquisition node belong to the same level, and each transmission module can transmit the seismic data collected by the acquisition module at this level to the upper transmission module or forwarding module at a low first rate. Among them, the uppermost transmission module transmits the seismic data at this level to the forwarding module, and the non-uppermost transmission module transmits the seismic data at this level to the upper transmission module.

[0080] Furthermore, refer to Figure 3 , step S201 may include S2011 to S2018:

[0081] S2011: performing equalization and shaping on the seismic data collected by the collection module at this level to obtain first serial seismic data;

[0082] S2012: determining a recovered clock signal according to the first serial seismic data;

[0083] S2013: Convert the first serial seismic data from a serial format to a parallel format according to the recovered clock signal to obtain first parallel seismic data;

[0084] S2014: performing a decoding operation and a descrambling operation on the first parallel seismic data in sequence to obtain second parallel seismic data;

[0085] S2015: framing the second parallel seismic data according to the data frame format of the acquisition module at this level to obtain third parallel seismic data;

[0086] S2016: performing a scrambling operation and an encoding operation on the third parallel seismic data in sequence to obtain fourth parallel seismic data;

[0087] S2017: Convert the fourth parallel seismic data from a parallel format to a serial format to obtain second serial seismic data;

[0088] S2018: Transmit the second serial seismic data to the upper-level transmission module or the forwarding module at the first rate.

[0089] As an optional implementation, the number of bits of the first parallel seismic data of this embodiment can be 10 bits, the number of bits of the second and third parallel seismic data can be 8 bits, and the number of bits of the fourth parallel seismic data can be 10 bits. Therefore, this embodiment can use an 8B / 10B decoding module to convert the first serial seismic data from a serial format to a parallel format according to a recovered clock signal to obtain first parallel seismic data, and use an 8B / 10B encoding module to convert the fourth parallel seismic data from a parallel format to a serial format to obtain second serial seismic data.

[0090] S202: Using the transmission module, transmit the seismic data transmitted by the lower-level transmission module to the upper-level transmission module or the forwarding module at the first rate.

[0091] Specifically, the non-lowest transmission module can receive the seismic data transmitted by the lower transmission module, and then directly transmit it to the upper transmission module or forwarding module at a low first rate. Among them, the upper transmission module transmits each lower seismic data to the forwarding module, and the non-upper transmission module transmits each lower seismic data to the upper transmission module.

[0092] S210: Using the forwarding module to transmit the seismic data transmitted by the transmission module to the upper-level forwarding module or the aggregation module at a second rate; wherein the second rate is higher than the first rate.

[0093] Specifically, considering that the distances between the various working sections may be relatively far, this embodiment can transmit the seismic data on each working section to the upper-level transmission module or forwarding module at a high-speed second rate through the transmission module.

[0094] Further, step S210 may include at least one of the following S211 or S212:

[0095] S211: Using the forwarding module, transmit the seismic data transmitted by the transmission module of the working section at the current level to the forwarding module or the aggregation module at the upper level at the second rate.

[0096] Specifically, each transmission module in the same working section belongs to the same level, and each forwarding module can transmit the seismic data transmitted by the transmission module at this level to the upper-level forwarding module or the lumping module at a high-speed second rate. Among them, the uppermost forwarding module transmits the seismic data to the lumping module, and the non-uppermost forwarding module transmits the seismic data of the working section at this level to the upper-level forwarding module.

[0097] Furthermore, step S211 may include S2111 to S2118:

[0098] S2111: performing equalization and shaping on the seismic data collected by each of the collection modules in the working section of this level to obtain a plurality of first serial seismic data;

[0099] S2112: determining a corresponding recovered clock signal according to each of the first serial seismic data;

[0100] S2113: Convert the first serial seismic data from a serial format to a parallel format according to each of the recovered clock signals to obtain a plurality of first parallel seismic data;

[0101] S2114: performing decoding operations and descrambling operations on each of the first parallel seismic data in sequence to obtain a plurality of second parallel seismic data;

[0102] S2115: framing each of the second parallel seismic data according to the data frame format of the forwarding module at this level to obtain third parallel seismic data;

[0103] S2116: performing a scrambling operation and an encoding operation on the third parallel seismic data in sequence to obtain fourth parallel seismic data;

[0104] S2117: Convert the fourth parallel seismic data from a parallel format to a serial format to obtain second serial seismic data;

[0105] S2118: Transmit the second serial seismic data at the second rate to the upper-level forwarding module or the aggregation module.

[0106] It can be understood that the specific implementation of this forwarding module can refer to the implementation of the transmission module. The steps of the data framing part in this embodiment combine the seismic data transmitted by each transmission module, which is different from the seismic data collected by the acquisition module at this level combined by the transmission module. The rest can be the same as the implementation of the transmission module.

[0107] S212: Using the forwarding module, transmit the seismic data transmitted by the transmission module of the lower working segment to the upper forwarding module or the aggregation module at the second rate.

[0108] Specifically, the non-lowest level forwarding module can receive the seismic data transmitted by the lower level forwarding module, and then directly transmit it to the upper level forwarding module at a high-speed second rate. Among them, the upper level forwarding module transmits the seismic data transmitted by each lower level forwarding module to the lumping module, and the non-upper level forwarding module transmits the seismic data transmitted by each lower level forwarding module to the upper level forwarding module.

[0109] S220: Utilize the lumping module to transmit the seismic data to the recording system.

[0110] Specifically, the lumping module can receive seismic data and transmit the acquired seismic data to a recording system.

[0111] Further, step S220 may include at least one of S221 to S222:

[0112] S221: Using the lumping module, the seismic data transmitted by the transmission module of the working section at this level is transmitted to the recording system.

[0113] S222: Using the lumping module, transmit the seismic data transmitted by the forwarding module of the lower-level working section to the recording system.

[0114] It can be understood that the aggregation module of this embodiment can transmit all received seismic data to the recording system.

[0115] As another optional implementation, step S220 may include S223:

[0116] S223: Utilize the lumping module to transmit the seismic data to the recording system via optical fiber.

[0117] Specifically, the lumped module may be connected to the recording system via an optical fiber. In order to transmit data via the optical fiber, the lumped module and the recording system of this embodiment may include an optoelectronic transceiver module.

[0118] Next, the solution of the embodiment of the present application will be introduced and explained in detail with reference to specific application examples.

[0119] Still refer to Figure 1 The topological structure of the high-precision small 3D seismic acquisition system based on the "single leading segment-multiple working segments" right-angle comb provided in this embodiment can be as follows: Figure 1In the structure shown, the underwater equipment has 4 working sections, and each working section has 2 acquisition nodes and 1 forwarding node. Data is transmitted from the lower node transmission module to the upper node transmission module in the working section acquisition node in a low-rate single-step manner, and is transmitted to the forwarding node aggregation module in the cross-section forwarding node in a high-rate double-step manner, and uploaded to the recording system through a single leading section. The working section acquisition node only sends seismic data of one acquisition node at a time, so the working section uses a lower transmission rate; the cross-section forwarding node sends the data of the entire working section at a time, so the cross-section uses a higher transmission rate. Finally, the aggregation module sends the data of all acquisition nodes of the exploration system to the recording system through the leading section.

[0120] First, various hardware in the acquisition system of this embodiment are described.

[0121] 1. Hardware design of the acquisition node transmission module.

[0122] Figure 4 The hardware structure diagram of the acquisition node transmission module. The acquisition node transmission module hardware consists of FPGA, FPGA peripheral circuit, driver chip, equalizer chip, isolation transformer, clock data recovery chip and power supply. Among them, FPGA controls the entire data transmission process of the acquisition node transmission module, including the reception, identification and issuance of downlink command information, the reception and issuance of downlink synchronization information, the reception and upload of local data, and the reception and upload of data of the lower-level acquisition node. The FPGA peripheral circuit includes a crystal oscillator, a reset circuit and a JTAG download circuit. The crystal oscillator provides the working clock for the FPGA, the reset circuit restores the initial state of the circuit, and the JTAG download circuit completes the program burning and debugging. The equalizer chip receives data. After the data is transmitted over a long distance, the signal will be attenuated. The equalizer chip balances and shapes the data to restore the data to the state when it was sent. The driver chip sends data, drives the transmission signal, and adjusts the voltage of the output signal at the sending end to reduce the attenuation of the signal. The isolation transformer can not only enhance the signal and reduce the signal attenuation, but also isolate the external electromagnetic interference signal and high voltage, and improve the anti-interference and anti-risk capabilities of the circuit board. The clock data recovery chip recovers the clock signal from the serial data and provides the working clock for data processing inside the FPGA. The power supply provides power for all the above circuits, including 5V, 3.3V, 2.5V and 1.2V.

[0123] The commands and synchronization information sent by the forwarding node first pass through the isolation transformer of the transmission module of the acquisition node, and then are input into the FPGA after the signal is shaped by the equalizing chip. On the one hand, the FPGA receives and parses the command, and on the other hand, it forwards the command and synchronization information, and sends it to the lower-level acquisition node after passing through the driver chip and isolation transformer. The data of the lower-level acquisition node also enters the clock data recovery chip after passing through the isolation transformer and the equalizing chip, recovers the clock from the data, and inputs the recovered clock and recovered data into the FPGA. The FPGA receives and frames the data for transmission, and uploads it to the upper-level node after passing through the driver chip and isolation transformer. The acquisition module of the local acquisition node directly sends the data to the FPGA, which receives and frames the data for transmission, and uploads it to the upper-level node after passing through the driver chip and isolation transformer.

[0124] 2. Hardware design of forwarding module of forwarding node.

[0125] Figure 5 This is the hardware structure diagram of the forwarding node forwarding module. The forwarding node forwarding module hardware and the collection node transmission module hardware are basically the same in composition, and are also composed of FPGA, FPGA peripheral circuit, driver chip, equalization chip, isolation transformer, clock data recovery chip and power supply. However, the forwarding node is a dual-level data transmission function, receiving data from the lower-level forwarding node and the collection node of the current working section, and forwarding commands and synchronization information to the lower-level forwarding node and the collection node of the current working section, so a two-way transmission circuit is designed.

[0126] The functions of each part of the hardware circuit of the forwarding module of the forwarding node are exactly the same as those of the transmission module of the acquisition node. Similarly, the forwarding module of the forwarding node receives commands and synchronization information in the same way as the transmission module of the acquisition node, but when forwarding the commands and synchronization information, they are sent to the lower-level forwarding node and the current-level acquisition node respectively after passing through two driver chips and isolation transformers. The data of this working section enters the clock data recovery chip after passing through the isolation transformer and the equalization chip, recovers the clock from the data, inputs the recovered clock and the recovered data into the FPGA, waits for the data of the two acquisition nodes of this working section to be received, and then frames and sends them. After passing through the driver chip and isolation transformer, they are uploaded to the upper-level node. The data of the lower-level forwarding node enters the clock data recovery chip after passing through the isolation transformer and the equalization chip, recovers the clock from the data, inputs the recovered clock and the recovered data into the FPGA, and after FPGA framing, passes through the driver chip and isolation transformer and is uploaded to the upper-level node.

[0127] 3. Hardware design of forwarding node aggregation module.

[0128] Figure 6This is the hardware structure diagram of the forwarding node lumped module. The hardware of the forwarding node lumped module and the hardware of the forwarding node forwarding module are slightly different in composition. The forwarding node of working segment 1 is connected to the leading segment, and the leading segment uses optical fiber for data transmission. Therefore, the forwarding node lumped module must have a photoelectric conversion function. The forwarding node lumped module consists of FPGA, FPGA peripheral circuit, driver chip, equalization chip, isolation transformer, clock data recovery chip, photoelectric transceiver module and power supply. An optoelectronic transceiver module is added to the hardware circuit of the forwarding node lumped module, which converts the electrical signal of the data into an optical signal through the optoelectronic conversion module, and sends the data to the recording system through the leading segment.

[0129] 4. Data transmission logic design.

[0130] 4.1 Collection node data transmission logic design.

[0131] Figure 7 It is a logical flow chart of data transmission of the acquisition node, which mainly includes serial-to-parallel conversion, 8B / 10B encoding, data descrambling, data framing, data scrambling, 8B / 10B encoding and parallel-to-serial conversion. Serial-to-parallel conversion, 8B / 10B encoding and data descrambling are the data receiving part, data framing is the data processing part, and data scrambling, 8B / 10B encoding and parallel-to-serial conversion are the data sending part.

[0132] Serial-to-parallel conversion module: The FPGA receives the clock and data recovered by the clock data recovery chip. The serial-to-parallel conversion module converts the serial recovery data into parallel data according to the input recovery clock. To achieve the serial-to-parallel conversion of data, the data boundary must be determined first, and then the serial-to-parallel conversion is performed. Therefore, the module first performs byte alignment. The byte alignment process is to determine whether the received serial data is a special character inside the module. The special character is the 8B / 10B control character added in the 8B / 10B encoding module of the data transmission part. This article uses K28.5. When the serial-to-parallel conversion module recognizes the special character, it determines the boundary of the data, and inputs the serial data into the register bit by bit according to the determined byte boundary to complete the data serial-to-parallel conversion.

[0133] 8B / 10B decoding module: The serial-to-parallel conversion module outputs the converted 10-bit parallel data to the 8B / 10B decoding module, and converts the 10-bit parallel data into 8-bit parallel data according to the 8B / 10B encoding and decoding rules.

[0134] Data descrambling module: The data descrambling module receives the 8-bit parallel data output by the 8B / 10B decoding module, descrambles the 8-bit parallel data, removes the special characters of 8B / 10B, and then outputs it.

[0135] Data framing module: FPGA first receives data from the local acquisition module, frames the data according to the acquisition node data frame format and outputs it, then receives data from the lower-level acquisition node and directly forwards it for output.

[0136] Data scrambling module: The data scrambling module receives the data output by the data framing module, scrambles the data, and adds 8B / 10B special characters before outputting it.

[0137] 8B / 10B encoding module: The 8B / 10B encoding module receives the scrambled data and encodes the 8-bit parallel data into 10-bit parallel data according to the 8B / 10B encoding and decoding rules.

[0138] Parallel-to-serial conversion module: The parallel-to-serial conversion module converts the 10-bit parallel data after 8B / 10B encoding into serial data, and sends the serial data to the driver chip according to the serial clock.

[0139] 4.2 Forwarding node data transmission logic design.

[0140] Figure 8 This is a logical flow chart for data transmission at the forwarding node, which mainly includes serial-to-parallel conversion, 8B / 10B encoding, data descrambling, data framing, data scrambling, 8B / 10B encoding and parallel-to-serial conversion. Serial-to-parallel conversion, 8B / 10B encoding and data descrambling are the data receiving part, data framing is the data processing part, and data scrambling, 8B / 10B encoding and parallel-to-serial conversion are the data sending part. The only difference between the forwarding node transmission logic and the acquisition node transmission logic is the data framing module, and the functions of the other modules remain the same. Forwarding node transmission logic data framing module: FPGA receives the data of the acquisition node of this working section in turn, frames the data of the two acquisition nodes of this working section according to the forwarding node data frame format and outputs it, then receives the data of the lower-level forwarding node and directly forwards and outputs it.

[0141] In summary, data is transmitted from the lower node transmission module to the upper node transmission module in the working section acquisition node in a low-rate single-step manner, and is transmitted to the forwarding node aggregation module in the cross-section forwarding node in a high-rate double-step manner, and uploaded to the recording system through a single leading segment. The working section acquisition node only sends the seismic data of one acquisition node at a time, so the working section uses a lower transmission rate, and the cross-section forwarding node sends the data of the entire working section at a time, so the cross-section uses a higher transmission rate. Finally, the aggregation module sends the data of all acquisition nodes of the exploration system to the recording system through the leading segment.

[0142] 5. Low-speed-high-speed hybrid pipeline data transmission experiment.

[0143] In order to verify the feasibility of low-speed-high-speed hybrid pipeline data transmission, this embodiment conducts low-speed transmission experiments between collection nodes and high-speed transmission experiments between forwarding nodes. A pseudo-random sequence is used as the transmission information for the transmission experiment. The sending end generates and sends a pseudo-random sequence, which is received by the receiving end after a certain distance of the transmission line. The receiving end performs data comparison and tests the transmission bit error rate.

[0144] A transmission experiment was conducted between two forwarding nodes with a transmission distance of 100m and a transmission rate of 65.536Mbps. The FPGA inside forwarding node 2 generated a pseudo-random sequence through a linear feedback shift register, which was output to the driver chip after 8B / 10B encoding and then received by the forwarding node after passing through a 100m transmission line. The FPGA inside forwarding node 1 decoded the received data by 8B / 10B, cached it for 1 cycle, and then generated a corresponding pseudo-random sequence through the same linear feedback shift register as forwarding node 2. The sequence was compared with the next received data. If they were the same, the bit errors were not counted. If they were different, the bit error counter was incremented by 1. Through long-term and multiple experiments, the data transmission bit error rate between the acquisition node and the forwarding node was tested.

[0145] 5.1 Data transmission experiment between acquisition nodes.

[0146] A transmission experiment was conducted between two acquisition nodes with a transmission distance of 300m and a transmission rate of 16.384Mbps. The FPGA inside acquisition node 2 generated a pseudo-random sequence through a linear feedback shift register, which was output to the driver chip after 8B / 10B encoding, and then received by acquisition node 1 after passing through a 300m transmission line. The FPGA inside acquisition node 1 decoded the received data by 8B / 10B, cached it for 1 cycle, and then generated a corresponding pseudo-random sequence through the same linear feedback shift register as acquisition node 2, and compared it with the next received data. If they were the same, the bit errors were not counted. If they were different, the bit error counter was increased by 1. Through long-term and multiple experiments, the data transmission bit error rate between acquisition nodes was tested.

[0147] Five data transmission experiments of the acquisition nodes were conducted under the conditions of 300m transmission distance and 16.384Mbps transmission rate. Each test lasted 12 hours. The data transmission error results of the acquisition nodes are shown in Table 1.

[0148] Table 1

[0149]

[0150]

[0151] Under the conditions of transmission distance of 300m and transmission rate of 16.384Mbps, the data transmission bit error rate E1 is:

[0152]

[0153] The experimental results between the collection nodes show that the data transmission bit error rate is no higher than 7.06×10 -12 .

[0154] 5.2 Data transmission experiment between forwarding nodes.

[0155] A transmission experiment was conducted between two forwarding nodes with a transmission distance of 100m and a transmission rate of 65.536Mbps. The FPGA inside forwarding node 2 generated a pseudo-random sequence through a linear feedback shift register, which was output to the driver chip after 8B / 10B encoding and then received by the forwarding node after passing through a 100m transmission line. The FPGA inside forwarding node 1 decoded the received data by 8B / 10B, cached it for 1 cycle, and then generated a corresponding pseudo-random sequence through the same linear feedback shift register as forwarding node 2. The sequence was compared with the next received data. If they were the same, the bit errors were not counted. If they were different, the bit error counter was incremented by 1. Through long-term and multiple experiments, the data transmission bit error rate between the acquisition node and the forwarding node was tested.

[0156] Five data transmission experiments at the acquisition node were conducted under the conditions of a transmission distance of 100m and a transmission rate of 65.536Mbps. Each test lasted 12 hours. The error results of the data transmission at the forwarding node are shown in Table 2.

[0157] Table 2

[0158]

[0159] Under the conditions of transmission distance of 100m and transmission rate of 65.536Mbps, the data transmission bit error rate E2 is:

[0160]

[0161] The experimental results between forwarding nodes show that the data transmission bit error rate is no higher than 2.47×10 -12 .

[0162] Reference Fig. 9 The embodiment of the present application further provides a seismic data transmission device, which can implement the above-mentioned seismic data transmission method, and the device includes:

[0163] A data transmission unit, used to transmit the seismic data collected by the collection module to the upper transmission module or the forwarding module at a first rate using the transmission module;

[0164] A data forwarding unit, used to use the forwarding module to transmit the seismic data transmitted by the transmission module to the upper forwarding module or the aggregation module at a second rate; wherein the second rate is higher than the first rate;

[0165] A data aggregation unit is used to transmit the seismic data to the recording system using the aggregation module.

[0166] It can be understood that the contents of the above method embodiments are all applicable to the present device embodiments, the functions specifically implemented by the present device embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0167] The embodiment of the present application also provides an electronic device, the electronic device includes a memory and a processor, the memory stores a computer program, and the processor implements the above-mentioned seismic data transmission method when executing the computer program. The electronic device can be any intelligent terminal including a tablet computer, a car computer, etc.

[0168] It can be understood that the contents of the above method embodiments are all applicable to the present device embodiments, the functions specifically implemented by the present device embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0169] See also Fig.10 , Fig.10 The hardware structure of an electronic device of another embodiment is illustrated, and the electronic device includes:

[0170] The processor 1001 may be implemented by a general-purpose CPU (Central Processing Unit), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits, and is used to execute relevant programs to implement the technical solutions provided in the embodiments of the present application;

[0171] The memory 1002 can be implemented in the form of a read-only memory (ROM), a static storage device, a dynamic storage device or a random access memory (RAM). The memory 1002 can store an operating system and other application programs. When the technical solution provided in the embodiment of this specification is implemented by software or firmware, the relevant program code is stored in the memory 1002, and the processor 1001 calls and executes a seismic data transmission method of the embodiment of this application;

[0172] Input / output interface 1003, used to implement information input and output;

[0173] The communication interface 1004 is used to realize the communication interaction between the device and other devices. The communication can be realized through a wired manner (such as USB, network cable, etc.) or a wireless manner (such as mobile network, WIFI, Bluetooth, etc.);

[0174] A bus 1005 , which transmits information between various components of the device (e.g., the processor 1001 , the memory 1002 , the input / output interface 1003 , and the communication interface 1004 );

[0175] The processor 1001 , the memory 1002 , the input / output interface 1003 and the communication interface 1004 are connected to each other in communication within the device via the bus 1005 .

[0176] An embodiment of the present application further provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the above-mentioned seismic data transmission method is implemented.

[0177] It can be understood that the contents of the above method embodiments are all applicable to the present storage medium embodiments, the functions specifically implemented by the present storage medium embodiments are the same as those of the above method embodiments, and the beneficial effects achieved are also the same as those achieved by the above method embodiments.

[0178] The memory, as a non-transient computer-readable storage medium, can be used to store non-transient software programs and non-transient computer executable programs. In addition, the memory may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some embodiments, the memory may optionally include a memory remotely disposed relative to the processor, and these remote memories may be connected to the processor via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0179] The embodiments described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Those skilled in the art will appreciate that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0180] Those skilled in the art will appreciate that the technical solutions shown in the figures do not constitute a limitation on the embodiments of the present application, and may include more or fewer steps than shown in the figures, or a combination of certain steps, or different steps.

[0181] The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0182] Those skilled in the art will appreciate that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices may be implemented as software, firmware, hardware, or a suitable combination thereof.

[0183] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0184] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0185] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the above units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0186] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0187] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0188] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including multiple instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), disk or optical disk and other media that can store programs.

[0189] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but the scope of the rights of the present invention is not limited thereto. Any modification, equivalent substitution and improvement made by a person skilled in the art without departing from the scope and essence of the present invention should be within the scope of the rights of the present invention.

Claims

1. A method for transmitting seismic data, characterized in that: The method is applied to a seismic data acquisition system, which includes a recording system and multiple working sections, each of which includes a forwarding module, multiple transmission modules and multiple acquisition modules, and each of which is connected in sequence through each of the forwarding modules, and the forwarding module in the uppermost working section serves as a lumped module; The method comprises the following steps: Using the transmission module to transmit the seismic data collected by the acquisition module to the upper transmission module or the forwarding module at a first rate; Using the forwarding module to transmit the seismic data transmitted by the transmission module to the upper forwarding module or the aggregation module at a second rate; wherein the second rate is higher than the first rate; The seismic data is transmitted to the recording system using the lumping module.

2. A seismic data transmission method according to claim 1, characterized in that: The method of using the transmission module to transmit the seismic data collected by the collection module at a first rate to the upper transmission module or the forwarding module comprises at least one of the following steps: Using the transmission module to transmit the seismic data collected by the collection module at this level to the transmission module or the forwarding module at an upper level at the first rate; Alternatively, the transmission module is used to transmit the seismic data transmitted by the lower-level transmission module to the upper-level transmission module or the forwarding module at the first rate.

3. A seismic data transmission method according to claim 2, characterized in that: The method of using the transmission module to transmit the seismic data collected by the collection module at the current level to the transmission module or the forwarding module at the upper level at the first rate includes the following steps: Equalizing and shaping the seismic data collected by the acquisition module at this level to obtain first serial seismic data; Determine a recovered clock signal based on the first serial seismic data; converting the first serial seismic data from a serial format to a parallel format according to the recovered clock signal to obtain first parallel seismic data; Performing decoding operations and descrambling operations on the first parallel seismic data in sequence to obtain second parallel seismic data; Frame the second parallel seismic data according to the data frame format of the acquisition module at this level to obtain third parallel seismic data; performing a scrambling operation and an encoding operation on the third parallel seismic data in sequence to obtain fourth parallel seismic data; converting the fourth parallel seismic data from a parallel format to a serial format to obtain second serial seismic data; The second serial seismic data is transmitted to the upper transmission module or the forwarding module at the first rate.

4. A seismic data transmission method according to claim 1, characterized in that: The method of using the forwarding module to transmit the seismic data transmitted by the transmission module to the upper forwarding module or the aggregation module at a second rate includes at least one of the following steps: Using the forwarding module, the seismic data transmitted by the transmission module of the working section of the current level is transmitted to the forwarding module or the aggregation module of the upper level at the second rate; Alternatively, the forwarding module is used to transmit the seismic data transmitted by the transmission module of the lower working section to the upper forwarding module or the aggregation module at the second rate.

5. A seismic data transmission method according to claim 4, characterized in that: The method of using the forwarding module to transmit the seismic data transmitted by the transmission module of the working section of the current level to the forwarding module or the aggregation module of the upper level at the second rate includes the following steps: The seismic data collected by each of the collection modules in the working section of this level are respectively equalized and shaped to obtain a plurality of first serial seismic data; Determine a corresponding recovered clock signal according to each of the first serial seismic data; Converting the first serial seismic data from a serial format to a parallel format according to each of the recovered clock signals to obtain a plurality of first parallel seismic data; Performing decoding operations and descrambling operations on each of the first parallel seismic data in sequence to obtain a plurality of second parallel seismic data; Frame each of the second parallel seismic data according to the data frame format of the forwarding module at this level to obtain third parallel seismic data; performing a scrambling operation and an encoding operation on the third parallel seismic data in sequence to obtain fourth parallel seismic data; converting the fourth parallel seismic data from a parallel format to a serial format to obtain second serial seismic data; The second serial seismic data is transmitted to the upper level forwarding module or the aggregation module at the second rate.

6. A seismic data transmission method according to claim 1, characterized in that: The step of transmitting the seismic data to the recording system by using the lumping module comprises at least one of the following steps: Using the lumping module to transmit the seismic data transmitted by the transmission module of the working section of this level to the recording system; Alternatively, the seismic data transmitted by the forwarding module of the lower-level working section is transmitted to the recording system by means of the lumping module.

7. A seismic data transmission method according to any one of claims 1 to 6, characterized in that: The method of transmitting the seismic data to the recording system by using the lumping module comprises the following steps: The seismic data is transmitted to the recording system via optical fiber using the lumping module.

8. A seismic data transmission device, characterized in that: The device comprises: A data transmission unit, used to transmit the seismic data collected by the collection module to the upper transmission module or the forwarding module at a first rate using the transmission module; A data forwarding unit, used to use the forwarding module to transmit the seismic data transmitted by the transmission module to the upper forwarding module or the aggregation module at a second rate; wherein the second rate is higher than the first rate; A data aggregation unit is used to transmit the seismic data to the recording system using the aggregation module.

9. An electronic device, characterized in that: The electronic device includes a memory and a processor, the memory stores a computer program, and the processor implements a seismic data transmission method as described in any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, a seismic data transmission method according to any one of claims 1 to 7 is implemented.

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