Data line signal polarity control method and device for seismic cable

Abstract

The present invention provides a method and device for controlling the polarity of a data line signal of a seismic cable, the method comprising: obtaining seismic data transmission parameters and a seismic data forwarding path; receiving seismic data and a data transmission pair number, and storing them in a cache; identifying the polarity of a seismic signal in a seismic data transmission link; performing signal polarity control on the seismic data in the cache according to the result of identifying the polarity of the seismic signal in the seismic data transmission link; and forwarding the seismic data in the cache after signal polarity control to a destination surface acquisition device according to the seismic data transmission parameters, the seismic data forwarding path, and the data transmission pair number. The present invention identifies the polarity of a seismic signal in a seismic data transmission link, and then performs signal polarity control on the seismic data in the cache, and then forwards the seismic data after polarity control to the destination surface acquisition device, thereby effectively improving the adaptability of the seismic data acquisition system to complex surface conditions.

Description

Technical Field

[0001] The invention relates to the field of seismic physical exploration, and in particular to a method and device for controlling the polarity of a data line signal of a seismic cable. Background Art

[0002] Wired instruments are the most widely used equipment in current seismic physical exploration, and are used to collect, transmit and record seismic exploration data. The ground acquisition equipment of wired instruments generally consists of a crossover station, a power station, a seismic data transmission line, etc., and the seismic cable is the main component of the seismic data transmission line. It is laid on the ground in the field during construction and is the key medium for the host to transmit commands to the acquisition node and for the acquisition node to transmit the collected seismic data.

[0003] Since different seismic instrument manufacturers have different design concepts, the ground equipment of wired seismic instruments currently in use has two structural types: chain and non-chain. The chain structure refers to the integrated design of seismic cables and acquisition stations, commonly known as "station-line integration"; the non-chain structure refers to the separate design of seismic cables and acquisition stations, commonly known as "station-line separation". Whether it is "station-line integration" or "station-line separation", the seismic cable is not infinitely long and generally supports 3 to 4 seismic data channels. In a two-dimensional or three-dimensional seismic acquisition project, a single receiving line needs to be equipped with 1,000 or more ground acquisition equipment to meet the needs of the construction design. Therefore, during the acquisition operation, the docking problem of seismic cables needs to be considered.

[0004] The ground acquisition equipment of the mainstream seismic data acquisition system currently in use has two designs: "station-line integrated" and "station-line separated". The above two different designs of ground acquisition equipment have their own advantages and disadvantages and applicable environments. For example, the "station-line separated" type of seismic equipment is easy to manage and deploy, and is suitable for seismic data acquisition in flat terrain, but the equipment has many contact points, which leads to high quality requirements for connectors in the system and is prone to arrangement failures. The "station-line integrated" type of seismic equipment has few contact points, and the system acquisition arrangement work is stable, but the equipment is inconvenient to retract and release. If a node in the acquisition chain fails, the acquisition chain needs to be replaced and re-laid, which is not suitable for operations in complex surface areas such as mountains.

[0005] With the continuous deepening of exploration, the scale of field seismic acquisition is getting larger and larger, and the types of construction surfaces involved will become more diverse. The wired seismic data acquisition system that only adopts the design of "station-line separation" or "station-line integration" can no longer meet the needs of future seismic exploration and construction. The main reason why "station-line separation" or "station-line integration" cannot be used together is that the problem of polarity conversion of data line signals of seismic cables has not been solved. Summary of the invention

[0006] An embodiment of the present invention provides a method for controlling the polarity of a data line signal of a seismic cable, which realizes the polarity conversion of the data line signal of the seismic cable. The method includes:

[0007] Obtaining seismic data transmission parameters and seismic data forwarding paths;

[0008] Receive seismic data and data transmission pair numbers and store them in a buffer;

[0009] Identify the polarity of mid-seismic signals in seismic data transmission links;

[0010] According to the seismic signal polarity identification result in the seismic data transmission link, the signal polarity of the seismic data in the buffer is controlled;

[0011] According to the seismic data transmission parameters, the seismic data forwarding path, and the data transmission pair number, the seismic data after signal polarity control in the buffer is forwarded to the destination surface acquisition equipment.

[0012] The embodiment of the present invention further provides a data line signal polarity control device for a seismic cable, comprising:

[0013] Type identification unit, data cache unit, parameter storage unit, data interface unit, main control unit;

[0014] The main control unit is respectively connected to the type identification unit, the data cache unit, the parameter storage unit and the data interface unit to coordinate the work of each unit;

[0015] A parameter storage unit, used to obtain seismic data transmission parameters and seismic data forwarding paths;

[0016] A data interface unit, used for receiving seismic data and data transmission pair numbers, and storing them in a data cache unit;

[0017] A type identification unit for identifying the polarity of a seismic signal in a seismic data transmission link;

[0018] The type identification unit is further used to control the signal polarity of the seismic data in the data buffer unit according to the seismic signal polarity identification result in the seismic data transmission link;

[0019] The data interface unit is also used to forward the seismic data after signal polarity control in the data cache unit to the destination surface acquisition equipment according to the seismic data transmission parameters, seismic data forwarding path, and data transmission pair number.

[0020] An embodiment of the present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned method for controlling the polarity of a data line signal of a seismic cable when executing the computer program.

[0021] An embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for executing the above-mentioned method for controlling the polarity of a data line signal of a seismic cable.

[0022] A method and device for controlling the polarity of a data line signal of a seismic cable provided in an embodiment of the present invention identify the polarity of a seismic signal in a seismic data transmission link, thereby controlling the signal polarity of seismic data in a cache, and then forwarding the seismic data after polarity control to a destination ground acquisition device, thereby realizing data forwarding. The embodiment of the present invention realizes the polarity control of the data line signal of the seismic cable, provides a basis for the sharing of two types of ground equipment, namely, "station-line separation" and "station-line integration", and effectively improves the adaptability of the seismic data acquisition system to complex surface conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0024] Figure 1 The present invention is a schematic diagram of a method for controlling the polarity of a data line signal of a seismic cable according to an embodiment of the present invention.

[0025] Figure 2 The present invention is a schematic diagram of a data line signal polarity control device for a seismic cable according to an embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of receiving seismic data by a method and device for controlling the polarity of a data line signal of a seismic cable according to an embodiment of the present invention. DETAILED DESCRIPTION

[0027] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0028] like Figure 1 As shown in a schematic diagram of a data line signal polarity control method for a seismic cable according to an embodiment of the present invention, an embodiment of the present invention provides a data line signal polarity control method for a seismic cable, which realizes the polarity conversion of the data line signal of the seismic cable. The method includes:

[0029] Step 101: Acquire seismic data transmission parameters and seismic data forwarding path;

[0030] Step 102: receiving seismic data and data transmission pair numbers, and storing them in a cache;

[0031] Step 103: Identify the polarity of the seismic signal in the seismic data transmission link;

[0032] Step 104: performing signal polarity control on the seismic data in the buffer according to the seismic signal polarity recognition result in the seismic data transmission link;

[0033] Step 105: forwarding the seismic data after signal polarity control in the buffer to the destination surface acquisition device according to the seismic data transmission parameters, the seismic data forwarding path, and the data transmission pair number.

[0034] A method for controlling the polarity of a data line signal of a seismic cable provided in an embodiment of the present invention identifies the polarity of a seismic signal in a seismic data transmission link, thereby controlling the signal polarity of seismic data in a cache, and then forwarding the seismic data after polarity control to a destination ground acquisition device, thereby realizing data forwarding. The embodiment of the present invention realizes the polarity control of the data line signal of the seismic cable, provides a basis for the sharing of two types of ground equipment, namely, "station-line separation" and "station-line integration", and effectively improves the adaptability of the seismic data acquisition system to complex surface conditions.

[0035] In the process of seismic physical exploration, in view of the characteristics of using seismic cables to transmit seismic signals, such as a large number of data line pairs, a high transmission rate, a long duration, high real-time requirements, and a large amount of data, an embodiment of the present invention provides a data line signal polarity control method for a seismic cable, which can control the signal polarity of seismic data and provide a basis for the sharing of two types of ground equipment, "station-line separation" and "station-line integration". In an embodiment, the method includes: obtaining seismic data transmission parameters and seismic data forwarding paths; receiving seismic data and data transmission pair numbers, and storing them in a cache; identifying the polarity of seismic signals in the seismic data transmission link; controlling the signal polarity of the seismic data in the cache according to the seismic signal polarity identification results in the seismic data transmission link; and forwarding the seismic data in the cache after signal polarity control to the destination ground acquisition equipment according to the seismic data transmission parameters, the seismic data forwarding paths, and the data transmission pair numbers.

[0036] When implementing the data line signal polarity control method of the seismic cable of the embodiment of the present invention, the aforementioned acquisition of seismic data transmission parameters and seismic data forwarding path may include: acquiring seismic data transmission parameters and seismic data forwarding path in ground equipment, seismic instruments and seismic cables.

[0037] When implementing the data line signal polarity control method of the seismic cable of the embodiment of the present invention, the aforementioned received seismic data and data transmission pair numbers are stored in a cache. In the embodiment, it may include: receiving the seismic data and data transmission pair numbers collected by the ground acquisition equipment through the connected seismic cable, and storing them in the cache; wherein the cache can be a first-in-first-out cache FIFO, or it can be a cache in other storage forms.

[0038] When implementing the data line signal polarity control method of the seismic cable of the embodiment of the present invention, the aforementioned identification of the polarity of the seismic signal in the seismic data transmission link may include: the seismic signal is continuously transmitted in the seismic data transmission link, and the seismic signal polarity is identified by connecting the seismic data transmission link through a software algorithm or a hardware circuit; in the embodiment, the seismic signal polarity may include: positive polarity and negative polarity.

[0039] When implementing the data line signal polarity control method of the seismic cable of the embodiment of the present invention, the aforementioned signal polarity control of the seismic data in the cache according to the seismic signal polarity identification result in the seismic data transmission link may include: based on the above-identified seismic signal polarity in the seismic data transmission link, according to the seismic signal polarity identification result in the seismic data transmission link, the signal polarity of the seismic data in the cache is controlled by a software algorithm or a hardware circuit.

[0040] When implementing the data line signal polarity control method of the seismic cable of the embodiment of the present invention, the aforementioned forwarding of the seismic data after signal polarity control in the cache to the destination surface acquisition equipment according to the seismic data transmission parameters, the seismic data forwarding path, and the data transmission pair number may include: utilizing the above-obtained seismic data transmission parameters, the seismic data forwarding path, and the received data transmission pair number to forward the seismic data after signal polarity control in the cache to the destination surface acquisition equipment, thereby controlling the data line signal polarity.

[0041] The aforementioned acquisition of seismic data transmission parameters, in one embodiment, may include: acquiring the data transmission rate of the seismic data transmission link, wherein acquiring the data transmission rate of the seismic data transmission link refers to setting the command parameters received from the seismic instrument host, and further, acquiring the data transmission rate of the seismic data transmission link may also be adaptively identified based on corresponding hardware circuits and software algorithms.

[0042] Before obtaining the data transmission rate of the seismic data transmission link, in one embodiment, the following may be included: setting the seismic data cache size and the data forwarding delay time; in the embodiment, the seismic data cache size and the data forwarding delay time may be set and saved according to the type of seismic instrument and the configuration parameters of the ground equipment. The seismic data cache size and the data forwarding delay time are parameter settings for data forwarding.

[0043] The aforementioned acquisition of the seismic data forwarding path may, in one embodiment, include: determining whether there is a fault in the standby data transmission path in the seismic cable; if there is no fault in the standby data transmission path, using the standby data transmission path as the seismic data forwarding path; if there is a fault in the standby data transmission path, replacing another available data transmission path as the seismic data forwarding path, obtaining the data transmission pair number of the available data transmission path, and sending it to the destination surface acquisition equipment. Since the scale of field seismic acquisition is large and the types of construction surfaces involved are more diverse, damage may be caused to the seismic cable and the transmission path in the seismic cable. Therefore, in the embodiment, before forwarding data, it should be determined whether there is a fault in the standby data transmission path in the seismic cable. In the embodiment, multiple test data transmission pairs can be transmitted in the data transmission path to check whether there is a fault in the data transmission path. In one example, three test data transmission pairs can be transmitted for inspection; if there is no fault in the standby data transmission path, the standby data transmission path is used as the seismic data forwarding path, and there is no need to notify the destination surface acquisition equipment to change the data transmission path; if there is a fault in the standby data transmission path, another available data transmission path is replaced as the seismic data forwarding path, and the data transmission pair number of the available data transmission path is obtained and sent to the destination surface acquisition equipment to notify the ground acquisition equipment to replace the new data transmission path.

[0044] In one embodiment, the aforementioned receiving of seismic data may include: receiving seismic data transmitted from a previous level ground acquisition device in a seismic data transmission link or receiving seismic data uploaded from a next level ground acquisition device in a seismic data transmission link. In the embodiment, since the data transmission link is arranged in an arrangement manner in actual exploration, it is possible to receive seismic data transmitted from a previous level ground acquisition device in a seismic data transmission link or receiving seismic data uploaded from a next level ground acquisition device in a seismic data transmission link.

[0045] The aforementioned identification of the polarity of seismic signals in a seismic data transmission link can be implemented through software algorithms or hardware circuits. In one embodiment, a method for identifying the polarity of seismic signals through hardware circuits is provided, including: transmitting a set of positive pulse polarity data in a seismic data transmission link, calculating the number of positive polarity pulses within a unit time length, and determining the polarity of the seismic signal based on the number of positive polarity pulses within a unit time length.

[0046] The aforementioned signal polarity control of the seismic data in the cache according to the seismic signal polarity identification result in the seismic data transmission link may include, in one embodiment: when the seismic signal polarity identification result in the seismic data transmission link is consistent with the signal polarity of the seismic data in the cache, the signal polarity control of the seismic data in the cache is not performed; when the seismic signal polarity identification result in the seismic data transmission link is inconsistent with the signal polarity of the seismic data in the cache, the signal polarity control of the seismic data in the cache is performed. In one embodiment, the aforementioned signal polarity control of the seismic data in the cache includes: signal polarity inversion of the seismic data in the cache; in the embodiment, the positive polarity seismic data may be inverted into the negative polarity seismic data, and the negative polarity seismic data may be inverted into the positive polarity seismic data.

[0047] In an embodiment, in one case, a seismic signal polarity identification result in a seismic data transmission link is compared with a signal polarity of the seismic data in a cache. When the seismic signal polarity identification result in the seismic data transmission link is consistent with the signal polarity of the seismic data in the cache, the signal polarity of the seismic data in the cache is not controlled. For example, when the seismic signal polarity identification result in the seismic data transmission link is positive polarity and the signal polarity of the seismic data in the cache is also positive polarity, the signal polarity of the seismic data in the cache is not controlled. For example, when the seismic signal polarity identification result in the seismic data transmission link is negative polarity and the signal polarity of the seismic data in the cache is also negative polarity, the signal polarity of the seismic data in the cache is not controlled. That is, when the seismic signal polarity in the seismic data transmission link and the signal polarity of the seismic data in the cache are the same polarity, the signal polarity of the seismic data in the cache is not controlled.

[0048] In the embodiment, in another case, the polarity identification result of the seismic signal in the seismic data transmission link is compared with the signal polarity of the seismic data in the cache. When the polarity identification result of the seismic signal in the seismic data transmission link is inconsistent with the signal polarity of the seismic data in the cache, the signal polarity of the seismic data in the cache is controlled. For example, when the polarity identification result of the seismic signal in the seismic data transmission link is positive polarity and the signal polarity of the seismic data in the cache is negative polarity, the signal polarity of the seismic data in the cache is controlled. Specifically, the seismic data with negative polarity in the cache is reversed to positive polarity seismic data, and the polarity is kept consistent with the seismic signal in the seismic data transmission link. When the polarity identification result of the seismic signal in the seismic data transmission link is negative polarity and the signal polarity of the seismic data in the cache is positive polarity, the signal polarity of the seismic data in the cache is controlled. Specifically, the positive polarity seismic data in the cache is reversed to negative polarity seismic data, and the polarity is kept consistent with the seismic signal in the seismic data transmission link.

[0049] The aforementioned data transmission pair number, in one embodiment, can be used to match the seismic data forwarding path when forwarding seismic data; in the embodiment, the data transmission pair number matches the seismic data forwarding path when forwarding seismic data, and serves as the data pair number to be used for data forwarding.

[0050] By means of the data line signal polarity control method of the seismic cable provided in the embodiment of the present invention, the seismic data transmitted in the seismic cable can be received and stored in a cache, and the polarity can be compared with the polarity of the seismic signal in the seismic data transmission link. When the polarities are inconsistent, the signal polarity of the seismic data in the cache can be converted so that the signal polarity of the seismic data in the cache is consistent with the polarity of the seismic signal in the seismic data transmission link, thereby enabling the mixed use of "station-line separation" and "station-line integration" ground equipment, thereby greatly improving the adaptability of the ground acquisition equipment to complex surfaces.

[0051] An embodiment of the present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned method for controlling the polarity of a data line signal of a seismic cable when executing the computer program.

[0052] An embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for executing the above-mentioned method for controlling the polarity of a data line signal of a seismic cable.

[0053] The present invention also provides a data line signal polarity control device for a seismic cable, as described in the following embodiments. Since the principle of the device to solve the problem is similar to that of a data line signal polarity control method for a seismic cable, the implementation of the device can refer to the implementation of a data line signal polarity control method for a seismic cable, and the repeated parts will not be repeated.

[0054] like Figure 2 As shown in the schematic diagram of a data line signal polarity control device for a seismic cable according to an embodiment of the present invention, the present invention also provides a data line signal polarity control device for a seismic cable, including:

[0055] Type identification unit 201, data cache unit 202, parameter storage unit 203, data interface unit 204, main control unit 20;

[0056] The main control unit 20 is the core of the data line signal polarity control device of the entire seismic cable, and is connected to the type identification unit 201, the data cache unit 202, the parameter storage unit 203 and the data interface unit 204 respectively, and is used to coordinate the work of each unit;

[0057] A parameter storage unit 203, used to obtain seismic data transmission parameters and seismic data forwarding paths;

[0058] A data interface unit 204, for receiving seismic data and data transmission pair numbers, and storing them in a data cache unit;

[0059] Type identification unit 201, used to identify the polarity of the seismic signal in the seismic data transmission link;

[0060] The type identification unit 201 is further used to control the signal polarity of the seismic data in the data buffer unit according to the seismic signal polarity identification result in the seismic data transmission link;

[0061] The data interface unit 204 is also used to forward the seismic data after signal polarity control in the data buffer unit to the destination surface acquisition equipment according to the seismic data transmission parameters, the seismic data forwarding path, and the data transmission pair number.

[0062] A data line signal polarity control device for a seismic cable provided in an embodiment of the present invention may also include: a power supply unit 205, which provides power support for the type identification unit 201, the data cache unit 202, the parameter storage unit 203, the data interface unit 204 and the main control unit 20, and provides energy supply for the data line signal polarity control device of the entire seismic cable; further, for a seismic data acquisition system that adopts a centralized power supply method that multiplexes power and data lines, the data line signal polarity control device of the seismic cable can use the power in the seismic cable as the energy source for its normal operation.

[0063] In one embodiment, the parameter storage unit is specifically used to obtain the data transmission rate of the seismic data transmission link.

[0064] In one embodiment, before acquiring the data transmission rate of the seismic data transmission link, the parameter storage unit is further used to: set the seismic data cache size and the data forwarding delay duration.

[0065] In one embodiment, the parameter storage unit is specifically used for:

[0066] Determine whether there is a fault in the standby data transmission path in the seismic cable;

[0067] If there is no fault in the standby data transmission path, use the standby data transmission path as the seismic data forwarding path;

[0068] If the standby data transmission path fails, another available data transmission path is replaced as the seismic data forwarding path, and the data transmission pair number of the available data transmission path is obtained and sent to the destination surface acquisition equipment.

[0069] like Figure 3As shown in the schematic diagram of a method for controlling the polarity of a data line signal of a seismic cable according to an embodiment of the present invention, in one embodiment, a data interface unit is serially connected in a seismic data acquisition arrangement, specifically used for:

[0070] Receive the seismic data transmitted from the upper-level ground acquisition device in the seismic data transmission link or the seismic data uploaded from the lower-level ground acquisition device in the seismic data transmission link; in an embodiment, the seismic data transmitted from the first ground acquisition device in the seismic data transmission link or the seismic data uploaded from the second ground acquisition device in the seismic data transmission link can be received, and so on, without limiting the number and arrangement of the ground acquisition devices.

[0071] In one embodiment, the type identification unit is specifically used to:

[0072] A set of positive pulse polarity data is transmitted in the seismic data transmission link, the number of positive polarity pulses within a unit time length is calculated, and the polarity of the seismic signal is determined according to the number of positive polarity pulses within the unit time length.

[0073] In one embodiment, the type identification unit is specifically used to:

[0074] When the seismic signal polarity identification result in the seismic data transmission link is consistent with the signal polarity of the seismic data in the cache, the signal polarity of the seismic data in the cache is not controlled;

[0075] When the seismic signal polarity recognition result in the seismic data transmission link is inconsistent with the signal polarity of the seismic data in the cache, the signal polarity of the seismic data in the cache is controlled.

[0076] In one embodiment, the type identification unit is further used to: perform signal polarity inversion on the seismic data in the cache.

[0077] In one embodiment, the data transmission pair is numbered to match the seismic data forwarding path when the seismic data is forwarded.

[0078] In summary, the data line signal polarity control method and device provided by the embodiment of the present invention can identify the polarity of the seismic signal in the seismic data transmission link, and then control the signal polarity of the seismic data in the cache, and then forward the seismic data after polarity control to the destination ground acquisition equipment, thereby realizing data forwarding; the embodiment of the present invention realizes the data line signal polarity control of the seismic cable, provides a basis for the sharing of the two ground equipments of "station-line separation" and "station-line integration", and effectively improves the adaptability of the seismic data acquisition system to complex surface conditions. In view of the characteristics of using seismic cables to transmit seismic signals, such as a large number of data line pairs, high transmission rate, long duration, high real-time requirements, and large data volume, the embodiment of the present invention proposes a data line signal polarity control method and device for seismic cables, thereby realizing the free mixing of two ground acquisition equipments with different structures.

[0079] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0080] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0081] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0082] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0083] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for controlling the polarity of a data line signal of a seismic cable, characterized in that: include: Obtaining seismic data transmission parameters and seismic data forwarding paths; Receive seismic data and data transmission pair numbers and store them in a buffer; Identify the polarity of seismic signals in seismic data transmission links; According to the seismic signal polarity identification result in the seismic data transmission link, the signal polarity of the seismic data in the buffer is controlled; According to the seismic data transmission parameters, the seismic data forwarding path, and the data transmission pair number, the seismic data after the signal polarity control in the buffer is forwarded to the destination surface acquisition equipment; Identifying the polarity of a seismic signal in a seismic data transmission link includes: transmitting a set of positive polarity pulse data in the seismic data transmission link, calculating the number of positive polarity pulses within a unit time length, and determining the polarity of the seismic signal according to the number of positive polarity pulses within the unit time length.

2. The method according to claim 1, characterized in that Obtaining seismic data transmission parameters includes: obtaining the data transmission rate of the seismic data transmission link.

3. The method according to claim 2, characterized in that Before obtaining the data transmission rate of the seismic data transmission link, the method further includes: setting the seismic data buffer size and the data forwarding delay time.

4. The method according to claim 1, characterized in that The forwarding path for obtaining seismic data includes: Determine whether there is a fault in the standby data transmission path in the seismic cable; If there is no fault in the standby data transmission path, use the standby data transmission path as the seismic data forwarding path; If the standby data transmission path fails, another available data transmission path is replaced as the seismic data forwarding path, and the data transmission pair number of the available data transmission path is obtained and sent to the destination surface acquisition device.

5. The method according to claim 1, characterized in that The receiving of seismic data comprises: Receive seismic data transmitted from the upper-level ground acquisition equipment in the seismic data transmission link or seismic data uploaded from the lower-level ground acquisition equipment in the seismic data transmission link.

6. The method according to claim 1, characterized in that According to the seismic signal polarity identification result in the seismic data transmission link, the signal polarity of the seismic data in the cache is controlled, including: When the seismic signal polarity identification result in the seismic data transmission link is consistent with the signal polarity of the seismic data in the cache, the signal polarity of the seismic data in the cache is not controlled; When the seismic signal polarity recognition result in the seismic data transmission link is inconsistent with the signal polarity of the seismic data in the cache, the signal polarity of the seismic data in the cache is controlled.

7. The method according to claim 1 or 6, characterized in that Signal polarity control is performed on the seismic data in the buffer, including: signal polarity inversion is performed on the seismic data in the buffer.

8. The method according to claim 1, characterized in that The data transmission pair number is used to match the seismic data forwarding path when forwarding seismic data.

9. A data line signal polarity control device for a seismic cable, characterized in that: include: Type identification unit, data cache unit, parameter storage unit, data interface unit, main control unit; The main control unit is respectively connected to the type identification unit, the data cache unit, the parameter storage unit and the data interface unit to coordinate the work of each unit; A parameter storage unit, used to obtain seismic data transmission parameters and seismic data forwarding paths; A data interface unit, used for receiving seismic data and data transmission pair numbers, and storing them in a data cache unit; A type identification unit for identifying the polarity of seismic signals in a seismic data transmission link; The type identification unit is further used to control the signal polarity of the seismic data in the data buffer unit according to the seismic signal polarity identification result in the seismic data transmission link; The data interface unit is also used to forward the seismic data after signal polarity control in the data buffer unit to the destination surface acquisition equipment according to the seismic data transmission parameters, the seismic data forwarding path, and the data transmission pair number; The type identification unit is specifically used to: transmit a set of positive polarity pulse data in a seismic data transmission link, calculate the number of positive polarity pulses within a unit time length, and determine the polarity of the seismic signal according to the number of positive polarity pulses within the unit time length.

10. The device according to claim 9, characterized in that The parameter storage unit is specifically used to obtain the data transmission rate of the seismic data transmission link.

11. The device according to claim 10, characterized in that Before acquiring the data transmission rate of the seismic data transmission link, the parameter storage unit is further used to: set the seismic data cache size and the data forwarding delay time.

12. The device according to claim 9, characterized in that The parameter storage unit is specifically used for: Determine whether there is a fault in the standby data transmission path in the seismic cable; If there is no fault in the standby data transmission path, use the standby data transmission path as the seismic data forwarding path; If the standby data transmission path fails, another available data transmission path is replaced as the seismic data forwarding path, and the data transmission pair number of the available data transmission path is obtained and sent to the destination surface acquisition device.

13. The device according to claim 9, characterized in that The data interface unit is specifically used for: Receive seismic data transmitted from the upper-level ground acquisition equipment in the seismic data transmission link or seismic data uploaded from the lower-level ground acquisition equipment in the seismic data transmission link.

14. The device according to claim 9, characterized in that The type identification unit is specifically used for: When the seismic signal polarity identification result in the seismic data transmission link is consistent with the signal polarity of the seismic data in the cache, the signal polarity of the seismic data in the cache is not controlled; When the seismic signal polarity recognition result in the seismic data transmission link is inconsistent with the signal polarity of the seismic data in the cache, the signal polarity of the seismic data in the cache is controlled.

15. The device according to claim 9 or 14, characterized in that The type identification unit is also used to: perform signal polarity inversion on the seismic data in the buffer.

16. The device according to claim 9, characterized in that The data transmission pair number is used to match the seismic data forwarding path when forwarding seismic data.

17. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the data line signal polarity control method of a seismic cable as claimed in any one of claims 1 to 8 when executing the computer program.

18. A computer-readable storage medium storing a computer program for executing the method for controlling polarity of a data line signal of a seismic cable according to any one of claims 1 to 8.

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