Digital seismic data acquisition apparatus

Abstract

The application provides a digital seismic data acquisition device, comprising: an oversampling digital sensing module, which is used for converting a vibration signal analog quantity into digital data; a digital data processing module, which is electrically connected with the oversampling digital sensing module, and is used for performing secondary processing on the digital data of the oversampling digital sensing module; and a main control module, which is electrically connected with the oversampling digital sensing module and the digital data processing module respectively, and is used for managing the oversampling digital sensing module and the digital data processing module. Through the arrangement, the number of parts is saved, the production cost of the device is reduced, and compared with an analog sensor, the data pickup fidelity and the anti-electromagnetic interference capability are improved.

Description

Technical Field

[0001] This application relates to the field of seismic exploration technology, and in particular to a digital seismic data acquisition device. Background Technology

[0002] Seismic data acquisition devices are core equipment in seismic exploration. With the development of seismic exploration, higher requirements are placed on the performance of seismic data acquisition devices. High fidelity of data acquisition, strong resistance to electromagnetic interference, high portability, and low power consumption have become the development direction of seismic data acquisition devices.

[0003] In related technologies, seismic data acquisition devices typically require multiple components such as analog sensors, amplifiers, and analog-to-digital converters. Data acquisition can only be completed through processes such as ground mechanical signal pickup and analog-to-digital conversion. This not only results in a large number of parts and high production costs, but also means that analog sensors are susceptible to electromagnetic interference in complex construction environments, affecting the stability and operational efficiency of the seismic data acquisition device. Utility Model Content

[0004] In view of this, this application provides a digital seismic data acquisition device that can reduce the cost of seismic data acquisition devices and improve their anti-interference ability and stability.

[0005] Specifically, the following technical solutions are included: This application provides a digital seismic data acquisition device, the digital seismic data acquisition device comprising: The oversampling digital sensing module is used to convert analog vibration signals into digital data. A digital data processing module is electrically connected to the oversampled digital sensing module, and the digital data processing module is used to perform secondary processing on the digital data of the oversampled digital sensing module; The main control module is electrically connected to the oversampling digital sensing module and the digital data processing module, respectively, and the main control module is used to manage the oversampling digital sensing module and the digital data processing module.

[0006] In one possible implementation, the oversampling digital sensing module includes a microelectromechanical system (MEMS).

[0007] In one possible implementation, the oversampling digital sensing module further includes a capacitive digital sensor and / or a piezoelectric digital sensor.

[0008] In one possible implementation, the digital seismic data acquisition device further includes a clock control module, which is electrically connected to both the main control module and the digital data processing module, and is used to provide a stable clock for the digital data processing module.

[0009] In one possible implementation, the digital seismic data acquisition device further includes a GPS module, which is electrically connected to both the main control module and the clock control module, and is used to calibrate and synchronize the clock control module.

[0010] In one possible implementation, the digital seismic data acquisition device further includes a storage module, which is electrically connected to both the digital data processing module and the main control module.

[0011] In one possible implementation, the digital seismic data acquisition device further includes an external interface module, which is electrically connected to the main control module.

[0012] In one possible implementation, the digital seismic data acquisition device further includes a power supply module electrically connected to the external interface module, and the power supply module is electrically connected to at least one of the main control module, the oversampling digital sensing module, and the digital data processing module.

[0013] In one possible implementation, the sampling rate of the oversampling digital sensing module is greater than or equal to 32KSPS.

[0014] In one possible implementation, the secondary processing of digital data by the digital data processing module includes filtering and resampling.

[0015] The beneficial effects of the technical solution provided in this application include at least the following: by setting an oversampling digital sensing module, the analog vibration signal can be converted into digital data for output, saving the number of parts and reducing the production cost of the device. Compared with analog sensors, it improves the data acquisition fidelity and anti-electromagnetic interference capability. The digital data of the oversampling digital sensing module is processed in a secondary manner using a digital data processing module to obtain better quality seismic data in a separate data processing method, further improving the stability and reliability of the digital seismic data acquisition device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of the digital seismic data acquisition device provided in the embodiments of this application.

[0018] The reference numerals in the figure indicate: 1-Oversampling digital sensing module; 2-Digital data processing module; 3-Storage module; 4-Main control module; 5-External interface module; 6-Clock control module; 7-GPS module.

[0019] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] The directional terms used in the embodiments of this application, such as "up," "down," and "side," are generally based on the relative relationships shown in the figures. These directional terms are used merely to more clearly describe the relationships between structures, not to describe absolute directions. When the product is placed in different orientations, the orientation may change; for example, "up" and "down" may be interchanged.

[0022] Unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by one of ordinary skill in the art.

[0023] To make the technical solutions and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0024] Seismic data acquisition devices are core equipment in seismic exploration. With the development of seismic exploration, higher requirements are placed on the performance of seismic data acquisition devices. High fidelity of data acquisition, strong resistance to electromagnetic interference, high portability, and low power consumption have become the development direction of seismic data acquisition devices.

[0025] In related technologies, seismic data acquisition devices typically require multiple components such as analog sensors, amplifiers, and analog-to-digital converters. Data acquisition can only be completed through processes such as ground mechanical signal pickup and analog-to-digital conversion. This not only results in a large number of parts and high production costs, but also means that analog sensors are susceptible to electromagnetic interference in complex construction environments, affecting the stability and operational efficiency of the seismic data acquisition device.

[0026] To address the aforementioned technical problems, this application provides a digital seismic data acquisition device that can improve the anti-interference capability and stability of the seismic data acquisition device.

[0027] like Figure 1 As shown, the digital seismic data acquisition device provided in this embodiment includes an oversampling digital sensing module 1, a digital data processing module 2, and a main control module 4. Among them, Figure 1 The arrows in the diagram indicate the signal transmission paths between the modules.

[0028] The oversampling digital sensing module 1 is used to convert analog vibration signals into digital data.

[0029] The digital data processing module 2 is electrically connected to the oversampled digital sensing module 1. The digital data processing module 2 is used to perform secondary processing on the digital data of the oversampled digital sensing module 1.

[0030] The main control module 4 is electrically connected to the oversampling digital sensing module 1 and the digital data processing module 2 respectively. The main control module 4 is used to manage the oversampling digital sensing module 1 and the digital data processing module 2.

[0031] Optionally, the digital seismic data acquisition device has a housing, in which the oversampling digital sensing module 1, the digital data processing module 2, and the main control module 4 are located.

[0032] The oversampling digital sensing module 1 uses oversampling technology, which refers to sampling at a sampling rate higher than the required frequency to obtain more information and ensure the accuracy and reliability of the signal.

[0033] Optionally, the oversampling digital sensing module 1 can acquire at least the following seismic data during operation: environmental noise, temperature and humidity, and seismic wave waveform parameters.

[0034] The digital data processing module 2 performs secondary processing on the digital data output by the oversampled digital sensing module 1 to obtain the sampling rate data specified by the main control module 4.

[0035] For example, the main control module 4 is an MCU (Microcontroller Unit).

[0036] The digital seismic data acquisition device provided in this application embodiment can convert analog vibration signals into digital data for output by setting an oversampled digital sensing module 1, which saves the number of parts and helps to reduce the production cost of the device. Compared with analog sensors, it improves data acquisition fidelity and anti-electromagnetic interference capability. The digital data processing module 2 performs secondary processing on the digital data of the oversampled digital sensing module 1 to obtain better quality seismic data in a separate data processing manner, which further improves the stability and reliability of the digital seismic data acquisition device.

[0037] In a further embodiment, the oversampling digital sensing module 1 includes a microelectromechanical system (MEMS).

[0038] Micro-Electro-Mechanical Systems (MEMS) are miniature devices or systems that integrate micro-sensors, micro-actuators, micro-mechanical structures, micro-power supplies, signal processing and control circuits, high-performance electronic integrated devices, interfaces, and communication, and have advantages such as miniaturization, low power consumption, and integration.

[0039] In this embodiment, by setting the oversampling digital sensing module 1 to include a microelectromechanical system (MEMS), the miniaturization characteristics of the MEMS are utilized to reduce the size and weight of the digital seismic data acquisition device and improve its portability. Furthermore, the MEMS has strong anti-electromagnetic interference capabilities, which enhances the fidelity and stability of data acquisition.

[0040] In some embodiments, the secondary processing of digital data by the digital data processing module 2 includes filtering and resampling.

[0041] The filtering process of digital data processing module 2 removes environmental noise, and the resampling process of digital data processing module 2 helps to obtain the required sampling rate data and reduce storage pressure. The filtering process and resampling process together improve data quality.

[0042] For example, after secondary processing by the digital data processing module 2, sampling rate data of 0.25KSPS / 0.5KSPS / 1KSPS / 2KSPS are obtained. Of course, the required sampling rate can be set according to actual needs, and this application does not impose specific limitations on it.

[0043] Compared to the data processing method performed inside the microelectromechanical system in related technologies, the embodiments of this application utilize the digital data processing module 2 outside the microelectromechanical system for secondary data processing, which embodies a separate data processing mode and can better achieve clutter filtering and obtain higher quality seismic data.

[0044] In some embodiments, the oversampling digital sensing module 1 further includes a capacitive digital sensor and / or a piezoelectric digital sensor.

[0045] Capacitive digital sensors offer high sensitivity and are suitable for low-frequency vibration detection; piezoelectric digital sensors provide fast response and are suitable for high-frequency signal acquisition. The digital signal output of the digital sensors avoids the attenuation of analog signals, allowing the oversampling digital sensing module 1 to directly interface with the digital data processing module 2, thus reducing signal loss.

[0046] By incorporating oversampling digital sensing module 1, capacitive and piezoelectric digital sensors are also included, which helps to expand the application range of digital seismic data acquisition devices and adapt to different seismic exploration scenarios.

[0047] Optionally, the sampling rate of the oversampling digital sensing module 1 is greater than or equal to 32KSPS.

[0048] With this setting, the high sampling rate of the oversampling digital sensing module 1 ensures high-fidelity capture of vibration data, meeting the needs of seismic exploration for detecting subtle signals.

[0049] In some embodiments, the digital seismic data acquisition device further includes a clock control module 6, which is electrically connected to the main control module 4 and the digital data processing module 2, respectively. The clock control module 6 is used to provide a stable clock for the digital data processing module 2.

[0050] The clock control module 6 ensures the synchronization of the digital data processing module 2, improves the accuracy of the data time stamp, and ensures the accuracy and timeliness of data transmission.

[0051] The digital seismic data acquisition device also includes a GPS module 7, which is electrically connected to the main control module 4 and the clock control module 6, respectively. The GPS module 7 is used to calibrate and synchronize the clock control module 6.

[0052] GPS module 7 achieves high-precision time synchronization by receiving satellite signals and using atomic clock technology. The calibration function reduces manual intervention and lowers the complexity of operation.

[0053] Optionally, the main control module 4 can record geographic coordinates and timestamps to automatically link earthquake data with geographic information, facilitating subsequent data analysis.

[0054] In some embodiments, the digital seismic data acquisition device further includes a storage module 3, which is electrically connected to the digital data processing module 2 and the main control module 4, respectively.

[0055] The storage module 3 can store the digital data processed by the digital data processing module 2 in the format set by the main control module 4.

[0056] The digital seismic data acquisition device improves the operating efficiency of the device by directly recording the data output from the digital data processing module 2, simplifies the development of the seismic data acquisition device, realizes local data caching, avoids dependence on real-time transmission, and enhances the independence of the digital seismic data acquisition device in a network-free environment.

[0057] Optionally, storage module 3 can be a detachable structure, which facilitates quick replacement or data export in the field. Encryption functions can also be added to protect data security.

[0058] In some embodiments, the digital seismic data acquisition device further includes an external interface module 5, which is electrically connected to the main control module 4.

[0059] The external interface module 5 is responsible for configuring parameters of the main control module 4, outputting the operating status data of each module, exporting the acquisition results, and charging the power module, which enhances the interactivity of the digital seismic data acquisition device.

[0060] The external interface module 5 is provided with multiple interfaces, which can be general interfaces or special interfaces. This application does not make any specific restrictions on this.

[0061] In some embodiments, the digital seismic data acquisition device further includes a power supply module, which is electrically connected to the external interface module 5 and to at least one of the main control module 4, the oversampling digital sensing module 1, the digital data processing module 2, the GPS module 7, and the clock control module 6.

[0062] The power module is responsible for providing power to each module and managing battery charging.

[0063] The power module centrally manages power supply and charging, extending the working time of the digital seismic data acquisition device in the field.

[0064] Optionally, the power module is equipped with a power monitoring circuit to provide early warning of low battery levels and prevent data loss.

[0065] In some embodiments, the operation of a digital seismic data acquisition device includes: When the digital seismic data acquisition device is powered on, external devices (such as a host computer) send configuration parameters to the main control module 4 through the external interface module 5; the main control module 4 sends configuration commands to the digital data processing module 2; the GPS module 7 performs clock calibration and timing synchronization on the clock control module 6; after successful calibration and timing synchronization, the GPS module 7 or the clock control module 6 returns a success command to the main control module 4; the main control module 4 starts the oversampling digital sensing module 1, the digital data processing module 2, and the storage module 3 to acquire and store seismic data, and sends the status information of each module to external devices through the external interface module 5; after the acquisition is completed, the external devices retrieve the data and charge the battery in the digital seismic data acquisition device through the external interface module 5.

[0066] Compared to existing technologies, the beneficial effects of this application include at least the following: (1) Seismic data acquisition is achieved by using a built-in oversampling digital sensing module 1 and filtering, resampling and storing the output data of the oversampling digital sensing module 1 locally. Each seismic data acquisition device works independently. (2) It avoids the impact of electromagnetic interference from the construction environment on seismic data; (3) The separate data processing method adopted can better achieve clutter filtering and obtain higher quality seismic data; (4) The direct data recording method of the data processing module improves the system operating efficiency and simplifies the development of the seismic data acquisition device; (5) The method of outputting a stable clock to the digital data processing module 2 by the clock control module 6 effectively improves the time stamp accuracy of the data.

[0067] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0068] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only.

[0069] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A digital seismic data acquisition device, characterized in that, The digital seismic data acquisition device includes: Oversampling digital sensing module (1) is used to convert analog vibration signals into digital data; The digital data processing module (2) is electrically connected to the oversampled digital sensing module (1), and the digital data processing module (2) is used to perform secondary processing on the digital data of the oversampled digital sensing module (1); The main control module (4) is electrically connected to the oversampling digital sensing module (1) and the digital data processing module (2) respectively. The main control module (4) is used to manage the oversampling digital sensing module (1) and the digital data processing module (2).

2. The digital seismic data acquisition device according to claim 1, characterized in that, The oversampling digital sensing module (1) includes a microelectromechanical system.

3. The digital seismic data acquisition device according to claim 2, characterized in that, The oversampling digital sensing module (1) also includes a capacitive digital sensor and / or a piezoelectric digital sensor.

4. The digital seismic data acquisition device according to claim 1, characterized in that, The digital seismic data acquisition device also includes a clock control module (6), which is electrically connected to the main control module (4) and the digital data processing module (2) respectively. The clock control module (6) is used to provide a stable clock for the digital data processing module (2).

5. The digital seismic data acquisition device according to claim 4, characterized in that, The digital seismic data acquisition device also includes a GPS module (7), which is electrically connected to the main control module (4) and the clock control module (6) respectively. The GPS module (7) is used to calibrate and synchronize the clock control module (6).

6. The digital seismic data acquisition device according to claim 1, characterized in that, The digital seismic data acquisition device also includes a storage module (3), which is electrically connected to the digital data processing module (2) and the main control module (4).

7. The digital seismic data acquisition device according to claim 1, characterized in that, The digital seismic data acquisition device also includes an external interface module (5), which is electrically connected to the main control module (4).

8. The digital seismic data acquisition device according to claim 7, characterized in that, The digital seismic data acquisition device also includes a power supply module, which is electrically connected to the external interface module (5) and is electrically connected to at least one of the main control module (4), the oversampling digital sensing module (1), and the digital data processing module (2).

9. The digital seismic data acquisition device according to claim 1, characterized in that, The sampling rate of the oversampled digital sensing module (1) is greater than or equal to 32KSPS.

10. The digital seismic data acquisition device according to any one of claims 1 to 9, characterized in that, The digital data processing module (2) performs secondary processing on the digital data, including filtering and resampling.

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