Node seismic survey system and method of operation thereof

Abstract

The application belongs to the technical field of seismic exploration, and discloses a node type seismic exploration system and operation method, which comprises a node management and data processing device, a node unit, a transfer box and a charging and downloading device. The node unit is configured to receive and record seismic data. The transfer box is used for placing multiple node units. The charging and downloading device can be connected with the node management and data processing device, and is used for realizing charging and data downloading of the node unit. The transfer box can be placed in the charging and downloading device, and when the transfer box is placed in the charging and downloading device, the node unit in the transfer box can be electrically connected with the charging and downloading device. The node type seismic exploration system can reduce the operation amount during charging and data downloading of the node unit, and improve the exploration efficiency.

Description

Technical Field

[0001] This invention relates to the field of seismic surveying technology, and in particular to a nodal seismic surveying system and its operation method. Background Technology

[0002] Nodal seismic exploration instruments, as a new type of seismic exploration and acquisition equipment, have advantages such as being unrestricted by seismic tracks and having strong adaptability to complex terrain, and are widely used in oil and gas exploration operations both domestically and internationally.

[0003] Currently, there are two main types of mainstream nodal seismic exploration instruments: external nodal instruments, which integrate the battery and acquisition circuitry within the station and use an external seismic detector to acquire seismic data during construction; and internal nodal instruments, which integrate the battery, acquisition circuitry, and seismic detector within the station for seismic data acquisition. Both types of nodal seismic exploration instruments require a charging and download cabinet for charging and data downloading. This necessitates multiple plugging and unplugging operations within the station during charging and data downloading, increasing the workload. Summary of the Invention

[0004] The purpose of this invention is to provide a nodal seismic exploration system to solve the problem of increased workload caused by repeated plugging and unplugging during station charging and data downloading.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A nodal seismic survey system includes a node management and data processing device, node units, a transfer box, and a charging and downloading device. The node units are configured to receive and record seismic data. The transfer box is used to house multiple node units. The charging and downloading device can be connected to the node management and data processing device to enable charging and data downloading of the node units. The transfer box can be placed inside the charging and downloading device, and when the transfer box is placed inside the charging and downloading device, the node units located inside the transfer box can be electrically connected to the charging and downloading device.

[0007] Optionally, the charging and downloading device includes a first base and a second base, the transfer box can be placed between the first base and the second base, the first base is provided with an interface for electrical connection with the node unit, and the distance between the second base and the first base is adjustable.

[0008] Optionally, the charging and downloading device further includes a linkage assembly, which includes a rotating arm, a pull rod, a first support rod, and a second support rod. At least two first support rods and two second support rods are provided. The first support rods and the second support rods are pivotally connected. The far ends of the first support rods and the second support rods are respectively pivotally connected to the first base and the second base. Multiple first support rods or multiple second support rods are connected to each other through the pull rod. The rotating arm is pivotally connected to the first base and the pull rod.

[0009] Optionally, the linkage assembly is provided in two sets, and a handle is connected between the two rotating arms in the two sets of linkage assemblies.

[0010] Optionally, the charging and downloading device further includes an elastic element that connects the first seat and the second seat to keep the first seat and the second seat close together.

[0011] Optionally, the second base is provided with a guide rail, and the transfer box is provided with a guide member, which is movable within the guide rail.

[0012] Optionally, the node unit includes a detector, which employs piezoelectric sensing or MEMS sensing technology.

[0013] Optionally, the nodal seismic survey system further includes a portable terminal. The node unit includes a communication module, which in turn includes a first wireless transmission submodule and a second wireless transmission submodule. The transmission speed of the second wireless transmission submodule is greater than that of the first wireless transmission submodule. The first wireless transmission submodule is used to receive control commands from the portable terminal or to transmit node operating status data. The first wireless transmission submodule is in a normally open standby state. The second wireless transmission submodule is used for quality control of exploration data and is in a normally closed state.

[0014] Optionally, the transfer box is equipped with a reading module for reading the sequence of the node unit.

[0015] The seismic survey method, based on the aforementioned nodal seismic survey system, is characterized by the following steps:

[0016] Node unit layout;

[0017] Quality control during the data acquisition process;

[0018] Downloading, splitting, and synthesizing node unit data.

[0019] Optionally, the node unit deployment includes the following steps:

[0020] The node unit is placed in the transfer box, and the transfer box transmits the serial number of the node unit to the node management and data processing device;

[0021] The transfer box is placed in the charging and downloading device, so that the node unit can connect and communicate with the node management and data processing equipment through the charging and downloading device;

[0022] Verify and confirm that the node unit that is communicating normally with it is consistent with the node unit information uploaded by the charging download transfer box;

[0023] Perform node unit testing and configure parameters using the node management and data processing equipment.

[0024] The transfer box is removed from the charging and downloading device, and unqualified node units are eliminated based on the node unit test results and parameter configuration results.

[0025] The transfer box transmits the qualified node unit serial number to the node management and data processing equipment;

[0026] The node units are deployed to the designated locations.

[0027] Optionally, the quality control of the acquisition process includes the following steps:

[0028] Portable terminals can receive or manually import quality control tasks and corresponding trajectory navigation information during the data acquisition process;

[0029] On-site personnel arrived at the node unit location where the quality control data to be collected was located, following the trajectory navigation information.

[0030] The portable terminal collects the working status information of the node unit according to the quality control task, and synchronously sends the time period information of the required quality control seismic data to the node unit.

[0031] The node unit's main control module sends seismic data to a portable terminal;

[0032] The portable terminal receives seismic data from the node unit and displays the seismic data quality control results.

[0033] Optionally, the node unit data download, segmentation, and synthesis include the following steps:

[0034] The portable terminal receives or manually imports node unit recovery tasks, activation information involved in the recovery task node units, and corresponding trajectory navigation information;

[0035] After the portable terminal confirms the serial number of the node unit, it retrieves the node unit and places it into the transfer box;

[0036] The transfer box containing the node unit is placed in the charging and downloading device to complete the data download and charging of the node unit;

[0037] Operate the node management and data processing equipment to output the required earthquake records.

[0038] The beneficial effects of the present invention are as follows: The nodal seismic exploration system of the present invention utilizes a transport box to transport and store nodal units, which improves portability. Moreover, when nodal units need to be charged and / or transmit data, the transport box can be placed directly in the charging and downloading device to achieve synchronous charging and / or data transmission of multiple nodal units. This eliminates the need for multiple steps of taking nodal units out of the transport box, inserting them into the charging and downloading device, unplugging them from the charging and downloading device, and then putting them back into the transport box, thus reducing workload and improving seismic exploration efficiency. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of the transfer box being unloaded from the charging and downloading device in an embodiment of the present invention;

[0040] Figure 2 This is a schematic diagram of the structure of the node unit in an embodiment of the present invention;

[0041] Figure 3 This is a cross-sectional view of a node unit in an embodiment of the present invention;

[0042] Figure 4 This is a schematic diagram of the structure of the transfer box in an embodiment of the present invention;

[0043] Figure 5 This is a front view of the charging and downloading device in the first state in an embodiment of the present invention;

[0044] Figure 6 This is a front view of the charging and downloading device in the second state in an embodiment of the present invention;

[0045] Figure 7 This is a left view of the charging and downloading device in an embodiment of the present invention;

[0046] Figure 8 This is a right view of the charging and downloading device in an embodiment of the present invention (the transfer box is loaded in the charging and downloading device);

[0047] Figure 9 This is an assembly diagram of the node unit being assembled with the interface of the charging and downloading device in an embodiment of the present invention;

[0048] Figure 10 yes Figure 9 A sectional view;

[0049] Figure 11 This is a top view of the interface of the charging and downloading device.

[0050] In the picture:

[0051] 1. Node unit; 11. Detector; 12. Battery; 13. Contact; 14. Housing; 141. First step; 15. Clamp; 16. Battery bracket; 17. Acquisition circuit board; 2. Transfer box; 21. Guide component; 22. Box body; 3. Charging and downloading device; 31. First seat; 32. Second seat; 33. Linkage assembly; 331. First support rod; 332. Second support rod; 333. Pull rod; 334. Rotary arm; 335. Upper mounting base; 336. Lower mounting base; 34. Handle; 35. Elastic component; 36. Interface; 361. Spring plate; 362. Limiting groove; 363. Second step; 37. Sliding rod; 38. Sliding sleeve; 39. Guide rail. Detailed Implementation

[0052] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0053] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0054] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0055] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0056] refer to Figures 1-11 As shown, this embodiment proposes a nodal seismic survey system, including a node management and data processing device, node units 1, a transport box 2, and a charging and downloading device 3. The node management and data processing device includes a server, which can perform tasks including but not limited to node unit 1 testing, parameter configuration, data downloading, data segmentation and synthesis, node operating status monitoring, and acquired data quality control. Node unit 1 testing mainly refers to testing the acquisition path indicators and the operating status of key components of node unit 1. Parameter configuration includes the data acquisition sampling interval, preamplifier gain, and the number and duration of daily self-checks for node unit 1. Node units 1 are used to receive and record seismic data. The transport box 2 is used to store multiple node units 1. The charging and downloading device 3 can be connected to the node management and data processing device to charge and download data from the node units 1. The transport box 2 can be placed inside the charging and downloading device 3, and when the transport box 2 is placed inside the charging and downloading device 3, the node units 1 located inside the transport box 2 can be electrically connected to the charging and downloading device 3.

[0057] The aforementioned nodal seismic survey system utilizes the transport box 2 to transport and store the node unit 1, improving portability. Moreover, when the node unit 1 needs to be charged and / or download data, the transport box 2 can be placed directly into the charging and downloading device 3, enabling multiple node units 1 to be charged and / or download data simultaneously. This eliminates the need for multiple steps of taking the node unit 1 out of the transport box 2, inserting it into the charging and downloading device 3, unplugging it from the charging and downloading device 3, and then putting it back into the transport box 2, thus reducing workload.

[0058] In this embodiment, the server contains software for node management, data download, and data processing. For example, the node management software is Node Hunter, the data download software is Harvester Manager, and the data processing software is DataManagers. All of the above software are existing software.

[0059] refer to Figure 2 , Figure 3 and Figure 10As shown, node unit 1 includes a housing 14, a detector 11, a battery 12, and a data acquisition circuit board 17. The housing 14 further includes a top cover and a main body, which are bolted together to facilitate maintenance and replacement of the battery 12, data acquisition circuit board 17, and detector 11 located within the housing 14. To ensure sealing, an O-ring is provided between the top cover and the main body. The battery 12 provides power to all components of node unit 1, is rechargeable, and features high charge / discharge temperature protection and short-circuit protection. The battery 12 is fixed inside the housing 14 by a battery bracket 16, which also has clamps 15 for securing the battery 12. The detector 11 converts mechanical vibrations into analog electrical signals and transmits them to the data acquisition circuit board 17. The detector 11 employs piezoelectric sensing or MEMS sensing technology to avoid the influence of magnetic field interference caused by instantaneous current changes in external or internal power supplies on the acquired data.

[0060] Specifically, in order to facilitate the coupling of node unit 1 with the ground, the lower end of the outer shell is set to a conical shape, and the upper end of the outer shell 14 is set to an approximately cylindrical shape.

[0061] In this embodiment, the acquisition circuit board 17 is equipped with a main control module, a clock source, a data acquisition module, a data storage module, a satellite module, and a connection module. The main control module is the core of the entire node unit 1, connected to the clock source, data acquisition module, data storage module, and satellite module. It is used to coordinate the relevant modules to complete the self-test of node unit 1, satellite timing and positioning, data acquisition, and local storage according to the configured parameters. The clock source provides a clock signal for the normal operation of the entire node unit 1. The data acquisition module is used to convert the seismic signal output by the detector 11 into a digital signal and transmit it to the main control module. The data storage module is used to store the data forwarded by the main control module from the data acquisition module after marking the time and location information. The satellite module is used to receive satellite signals and provide the main control module with position and time information with an accuracy of not less than 10⁻⁸ seconds at regular intervals. The connection module is used to connect to the charging and downloading device 3 to charge the battery 12 of node unit 1 and download data. Specifically, it can be electrically connected to the charging and downloading device 3 by means including but not limited to plugging and contacting. In this embodiment, the connection module includes four contacts 13, which protrude from the upper surface of the housing 14. Correspondingly, the interface 36 provided in the charging download device 3 adopts a spring contact interface that can contact the contacts 13, and can support a charging current of more than 6A and a data reading rate of not less than 10MB / s.

[0062] In addition, node unit 1 also includes a communication module connected to the main control module. The node-type seismic survey system also includes a portable terminal, which can be, but is not limited to, mobile phones, tablets, vehicle platforms, etc. The communication module includes a first wireless transmission submodule and a second wireless transmission submodule. The first wireless transmission submodule can achieve bidirectional wireless communication with the portable terminal through relay transmission or point-to-point communication, and is used to receive control commands or transmit node working status data. It is normally in a standby state. The second wireless transmission submodule can wirelessly transmit the required seismic data back to the portable terminal through relay transmission or point-to-point communication for the quality control of exploration data. It is only turned on by the main control module when transmitting data and is turned off in time after the data transmission is completed. That is, the second wireless transmission submodule is in a normally closed state.

[0063] The communication module and portable terminal enable real-time monitoring of the operating status of node unit 1 and quality monitoring of exploration data, helping to maintain the quality of data collected by node unit 1. It is understood that the transmission speed of the second wireless transmission submodule is greater than that of the first wireless transmission submodule, and its power consumption is also greater. For example, the first wireless transmission submodule uses Bluetooth or LoRa transmission, while the second wireless transmission submodule uses 4G or 5G transmission. Therefore, keeping the second wireless transmission submodule in a normally closed state can reduce power consumption, thereby reducing the size required for battery 12, and thus reducing the size of node unit 1, resulting in high portability.

[0064] refer to Figure 4 As shown, the transfer box 2 has a cubic structure, with multiple receiving slots arranged in a rectangular array on it. Node units 1 can be assembled into the receiving slots one by one. To limit the position of the node units 1 and prevent them from rotating, the receiving slots are shaped to fit the node units 1. Specifically, to ensure that the node units 1 are inserted to the same depth into the receiving slots, so that the node units 1 can be electrically connected to the charging and downloading device 3 when the transfer box 2 is placed in the charging and downloading device 3, the opening of the receiving slot is smaller than the maximum cross-section of the node unit 1. When the node unit 1 is inserted into the receiving slot, one end of the node unit 1 with the contact point 13 protrudes out of the receiving slot.

[0065] Meanwhile, the transport box 2 is equipped with a reading module for reading the sequence of node unit 1. For example, if node unit 1 is equipped with an RFID tag, the reading module uses an RFID reader / writer. With node unit 1 placed inside the transport box 2, the RFID reader / writer automatically reads the serial number of node unit 1. Furthermore, the RFID reader / writer can wirelessly transmit the serial number of the transport box 2 and the read serial number of node unit 1 to the node management and data processing equipment. In addition, the transport box 2 is also equipped with a switch module for controlling the opening and closing of node unit 1. The switch module can open and close node unit 1 in a contactless manner, for example, using a magnetic switch. The magnetic switch, RFID tag, and RFID reader / writer are all existing technologies, and their principles and specific structures will not be elaborated here.

[0066] The charging download device 3 has a reliable, stable, and sufficient power supply with parameters that meet the requirements. It also adopts USB and gigabit compatible download technology, has a high single-port download speed, and can support a large number of node units 1 for parallel download.

[0067] refer to Figures 4-7 As shown, the charging and downloading device 3 includes a first base 31 and a second base 32. A spring plate interface is disposed on the first base 31. At the same time, the spring plate interface is electrically connected to the hardware and software device inside the first base 31 that uses a general serial bus protocol to convert to an Ethernet protocol. The above-mentioned hardware and software device is prior art and will not be described in detail here. The distance between the second seat 32 and the first seat 31 along the direction of the insertion of the spring plate interface into the node unit 1 is adjustable. Since the node unit 1 is vertically arranged in the transfer box 2, the distance between the second seat 32 and the first seat 31 along the vertical direction is adjustable. By adjusting the distance between the first seat 31 and the second seat 32, the first seat 31 and the second seat 32 can switch between a first state and a second state. In the second state, the distance between the first seat 31 and the second seat 32 is greater than the distance between the first seat 31 and the second seat 32 in the first state. The transfer box 2 can be transferred into the limiting space formed between the first seat 31 and the second seat 32, or moved out of the limiting space. In the first state, the first seat 31 and the second seat 32 can cooperate to clamp the transfer box 2. The contact 13 on the node unit 1 in the transfer box 2 can fully contact the spring plate interface to achieve effective connection.

[0068] In this embodiment, the outer surface of the node unit 1 is further provided with a first step 141, and the spring plate interface is provided with a second step 363. The first step 141 can abut against the second step 363 to limit the insertion depth of the node unit 1 into the spring plate interface. In order to circumferentially limit the node unit 1 and enable the contact 13 of the node unit 1 to be effectively connected with the spring plate 361 in the spring plate interface, a guide groove is provided in the spring plate interface, and a protrusion that can move within the guide groove is provided on the outer surface of the node unit 1. Of course, in other embodiments, the protrusion can be provided in the spring plate interface, and the guide groove can be provided on the outer surface of the node unit 1.

[0069] Specifically, the second seat 32 is located below the first seat 31. A sliding rod 37 is vertically arranged on one of the first seat 31 and the second seat 32, and a sliding sleeve 38 is sleeved on the other seat, that is, the first seat 31 and the second seat 32 are slidably connected in the vertical direction. To maintain the distance between the first seat 31 and the second seat 32 in the first state, in this embodiment, the charging and downloading device 3 further includes a linkage assembly 33, which includes a rotating arm 334, a pull rod 333, a first support rod 331, and a second support rod 332. At least two first support rods 331 and 332 are provided, and the first and second support rods 331 and 332 are pivotally connected. Their far ends are pivotally connected to the first seat 31 and the second seat 32 via an upper mounting seat 335 and a lower mounting seat 336, respectively. Multiple first support rods 331 or multiple second support rods 332 are connected by pull rods 333. The rotating arm 334 is pivotally connected to the first seat 31 and the pull rod 333. By rotating the rotating arm 334, the included angle between the pivotally connected first support rods 331 and 332 can be changed, thereby changing the vertical distance between the first seat 31 and the second seat 32.

[0070] Obviously, when the included angle between the first support rod 331 and the second support rod 332 is 180°, the distance between the first seat 31 and the second seat 32 is at its maximum. At this time, the first support rod 331 and the second support rod 332 are at their dead point positions, and the distance between the first seat 31 and the second seat 32 remains unchanged. The transfer box 2 can enter between the first seat 31 and the second seat 32 in the horizontal direction. When the included angle between the first support rod 331 and the second support rod 332 decreases, the distance between the second seat 32 and the first seat 31 decreases, and the node unit 1 can be inserted into the limiting groove 362 to realize the electrical connection between the node unit 1 and the charging download device 3.

[0071] Specifically, there are two sets of linkage assemblies 33, which are located on opposite sides of the first base 31, for example, on opposite sides of the first base 31 along its length. A handle 34 is connected between the rotating arms 334 of the two sets of linkage assemblies 33. By applying an upward or downward force to the handle 34, the two sets of linkage assemblies 33 can move synchronously.

[0072] To achieve an effective connection between node unit 1 and charging / downloading device 3, charging / downloading device 3 further includes an elastic element 35, which connects the first seat 31 and the second seat 32, causing the first seat 31 and the second seat 32 to tend to move closer together. Specifically, the elastic element 35 is a spring.

[0073] Continue to refer to Figure 7 As shown, to reduce the difficulty of the transfer box 2 entering the charging and downloading device 3, a guide rail 39 is provided on the second base 32. The transfer box 2 includes a box body 22 and a guide member 21. The guide member 21 is located on the outside of the box body 22 and can move within the guide rail 39. In this embodiment, the guide member 21 is a guide wheel, which can roll within the guide rail 39. In other embodiments, the guide member 21 can also be a guide block.

[0074] Specifically, the two guide rails 39 are respectively located on the inner side of the second seat 32, and the two guide members 21 are located on the outer side of the transfer box 2.

[0075] This embodiment also proposes an operation method based on the above-mentioned nodal seismic exploration system, which mainly includes the following steps:

[0076] (I) Layout of Node Unit 1

[0077] Step 1: Place node unit 1 in transfer box 2. Transfer box 2 automatically transmits the serial number of node unit 1 and its box body 22 and other information wirelessly to the node management and data processing equipment.

[0078] Step 2: Place the transfer box 2 containing the node unit 1 into the charging and downloading device 3, operate the charging and downloading device 3 to reduce the distance between the first seat 31 and the second seat 32, so that the node unit 1 in the transfer box 2 can be connected and communicated normally with the node management and data processing equipment through the charging and downloading device 3.

[0079] Step 3: Use the software of the node management and data processing equipment to verify and confirm whether the node unit 1 that is communicating normally with it is consistent with the node unit 1 information uploaded by the transfer box 2.

[0080] Step 4: Use the software of the node management and data processing equipment to test node unit 1, configure parameters such as sampling interval and preamplifier gain for seismic data analog-to-digital conversion, and store the test and parameter configuration results of node unit 1.

[0081] Step 5: The operator takes the transfer box 2 out of the charging and downloading device 3, and promptly removes unqualified node units 1 according to the test results and parameter configuration results of node unit 1. Unqualified node unit 1 refers to node unit 1 whose technical indicators are unqualified or node unit 1 is damaged.

[0082] Step 6: The transfer box 2 automatically transmits the serial number of the qualified node unit 1 it contains, along with the serial number of its box body 22 and other information, to the node management and data processing equipment wirelessly;

[0083] Step 7: The node management and data processing equipment will store and record the serial number of the transfer box 2 and the serial number of the qualified node unit 1 contained therein, along with the serial number of the on-site operator who received the equipment, from Step 6.

[0084] Step 8: On-site personnel arrive at the receiving point and manually or using automated deployment equipment deploy node unit 1 to the designated location.

[0085] (II) Quality Control of Data Acquisition Process

[0086] Step 1: The portable terminal receives or manually imports the quality control task and corresponding trajectory navigation information of the acquisition process. The quality control of the acquisition process mainly refers to the deployment range (physical deployment location) of node unit 1 to be retrieved quality control data.

[0087] Step 2: On-site personnel arrive at node unit 1, where the quality control data to be recovered, according to the trajectory navigation information;

[0088] Step 3: The portable terminal collects the working status information of node unit 1 according to the quality control task, and synchronously sends the time period information of the required quality control seismic data to node unit 1.

[0089] Step 4: The main control module of node unit 1 starts the high-speed wireless transmission submodule of the communication module to send the required seismic data containing time and location information to the portable terminal in relay jump transmission or point-to-point communication mode.

[0090] Step 5: The portable terminal receives the seismic data from node unit 1, verifies whether the time and location information carried in the seismic data meets the quality control requirements, and displays the seismic data quality control results;

[0091] Step 6: Repeat steps 2 to 5 until all node unit 1 status data and seismic data in the acquisition process quality control task are recovered;

[0092] Step 7: The portable terminal imports the recovered node unit 1 working status data and seismic data into the node management and data processing equipment via remote wireless or manual means for comprehensive quality evaluation and analysis.

[0093] (III) Data downloading, segmentation and synthesis of node unit 1

[0094] Step 1: The portable terminal receives or manually imports the node unit 1 retrieval task, the excitation information involved in the retrieval task node unit 1, and the corresponding trajectory navigation information. In seismic exploration, it is necessary to artificially generate seismic waves. This process is called excitation. Each excitation corresponds to a different node unit 1 that needs to participate in the acquisition of seismic data. The excitation information involved in the retrieval task node unit 1 indicates the node units 1 involved in the acquisition of currently excited information.

[0095] Step 2: On-site personnel arrive at the location of the node unit to be recycled according to the trajectory navigation information;

[0096] Step 3: After confirming the serial number of node unit 1 using a portable terminal, retrieve node unit 1 and place it into transfer box 2;

[0097] Step 4: Repeat steps 2 through 3 until all node units 1 involved in the recycling task have been recycled;

[0098] Step 5: Connect the charging and downloading device 3 to the portable terminal using a network cable;

[0099] Step 6: Place the transfer box 2 containing the recycling node unit 1 into the charging and downloading device 3;

[0100] Step 7: Operate the portable terminal to download all the data stored in node unit 1, or only the data related to the excitation information, and test the connected node unit 1 and save the test results;

[0101] In this step, before downloading data and testing node unit 1, you can check whether the number of node units 1 and their serial numbers in the transfer box 2 match the actual number.

[0102] Step 8: Repeat steps 6-7 until all node units 1 involved in the recycling task have completed data download and charging;

[0103] Step 9: Using a portable terminal, transmit the serial number of transport box 2 and its node unit 1 information, along with the downloaded seismic data, to the node management and data processing equipment via wireless or wired connection.

[0104] Step 10: After all data and related information of all node units 1 have been collected, operate the node management and data processing equipment to output the required seismic records.

[0105] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A nodal seismic survey system, characterized in that, The nodal seismic survey system includes: Node management and data processing equipment; Node unit (1), which is configured to receive and record seismic data; A transfer box (2) is used to place multiple node units (1); The charging and downloading device (3) can be connected to the node management and data processing device to realize the charging and data downloading of the node unit (1); The transfer box (2) can be placed in the charging and downloading device (3), and when the transfer box (2) is placed in the charging and downloading device (3), the node unit (1) located in the transfer box (2) can be electrically connected to the charging and downloading device (3).

2. The nodal seismic survey system according to claim 1, characterized in that, The charging and downloading device (3) includes a first base (31) and a second base (32). The transfer box (2) can be placed between the first base (31) and the second base (32). The first base (31) is provided with an interface (36) for electrical connection with the node unit (1). The distance between the second base (32) and the first base (31) is adjustable.

3. The nodal seismic survey system according to claim 2, characterized in that, The charging and downloading device (3) further includes a linkage assembly (33), which includes a rotating arm (334), a pull rod (333), a first support rod (331), and a second support rod (332). At least two of the first support rod (331) and the second support rod (332) are provided. The first support rod (331) and the second support rod (332) are pivotally connected. The far ends of the first support rod (331) and the second support rod (332) are respectively pivotally connected to the first base (31) and the second base (32). Multiple first support rods (331) or multiple second support rods (332) are connected by the pull rod (333). The rotating arm (334) is pivotally connected to the first base (31) and the pull rod (333).

4. The nodal seismic survey system according to claim 3, characterized in that, The linkage assembly (33) is provided in two sets, and a handle (34) is connected between the two rotating arms (334) in the two sets of linkage assemblies (33).

5. The nodal seismic survey system according to claim 3, characterized in that, The charging and downloading device (3) further includes an elastic element (35) that connects the first seat (31) and the second seat (32) to keep the first seat (31) and the second seat (32) close together.

6. The nodal seismic survey system according to claim 2, characterized in that, The second seat (32) is provided with a guide rail (39), and the transfer box (2) is provided with a guide member (21), which can move within the guide rail (39).

7. The nodal seismic survey system according to any one of claims 1-6, characterized in that, The node unit (1) includes a detector (11), which is a piezoelectric sensor or a MEMS sensor.

8. The nodal seismic survey system according to any one of claims 1-6, characterized in that, The nodal seismic survey system also includes a portable terminal. The node unit (1) includes a communication module, which in turn includes a first wireless transmission submodule and a second wireless transmission submodule. The transmission speed of the second wireless transmission submodule is greater than that of the first wireless transmission submodule. The first wireless transmission submodule is used to receive control commands from the portable terminal or to transmit node working status data back. The first wireless transmission submodule is in a normally open standby state. The second wireless transmission submodule is used for quality control of exploration data. The second wireless transmission submodule is in a normally closed state.

9. The nodal seismic survey system according to claim 8, characterized in that, The transfer box (2) is provided with a reading module for reading the sequence of the node unit (1), and / or the transfer box (2) is provided with a switch module for opening and closing the node unit (1).

10. A method of operation, comprising conducting seismic surveys based on the nodal seismic survey system of claim 9, characterized in that, Includes the following steps: Node unit (1) layout; Quality control during the data acquisition process; Node unit (1) data download, segmentation and synthesis.

11. The operating method according to claim 10, characterized in that, The deployment of the node unit (1) includes the following steps: The node unit (1) is placed in the transfer box (2), and the transfer box (2) transmits the serial number of the node unit (1) to the node management and data processing device; The transfer box (2) is placed in the charging and downloading device (3), so that the node unit (1) can connect and communicate with the node management and the data processing equipment through the charging and downloading device (3); Verify and confirm that the information of the node unit (1) that is communicating normally with it is consistent with the information of the node unit (1) uploaded by the charging download transfer box (2); The node unit (1) is tested using the node management and data processing equipment, and the parameters are configured. The transfer box (2) is taken out from the charging and downloading device (3), and unqualified node units (1) are eliminated according to the test results and parameter configuration results of the node unit (1); The transfer box (2) transmits the serial number of the qualified node unit (1) to the node management and data processing equipment; The node unit (1) is deployed to the designated location.

12. The operating method according to claim 10, characterized in that, The quality control of the data acquisition process includes the following steps: Portable terminals can receive or manually import quality control tasks and corresponding trajectory navigation information during the data acquisition process; On-site personnel arrive at the location of the node unit (1) where the quality control data to be recovered is located according to the trajectory navigation information; The portable terminal collects the working status information of the node unit (1) according to the quality control task, and synchronously sends the time period information of the required quality control seismic data to the node unit (1); The node unit (1) sends seismic data to the portable terminal; The portable terminal receives the seismic data from the node unit (1) and displays the seismic data quality control results.

13. The operating method according to claim 12, characterized in that, The data download, segmentation, and synthesis of the node unit (1) includes the following steps: The portable terminal receives or manually imports the node unit (1) recovery task, the activation information involved in the recovery task node unit (1), and the corresponding trajectory navigation information; After the portable terminal confirms the serial number of the node unit (1), it retrieves the node unit (1) and places it into the transfer box (2); The transfer box (2) containing the node unit (1) is placed in the charging and downloading device (3) to complete the data download and charging of the node unit (1); Operate the node management and data processing equipment to output the required earthquake records.

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