Frequency-adjustable high-precision split type seismograph

Abstract

The utility model relates to a frequency-adjustable high-precision split type seismograph. The seismograph comprises a seismograph main control module and a geophone module group, the seismograph main control module comprises a signal acquisition module, a signal processing module, a data analysis and storage module, a wireless communication module and a standardized interface; the detector module group comprises a plurality of detector modules with different frequencies; the standardized interface is used for connecting the geophone module and identifying geophone parameters, so that the seismograph main control module adapts to a preset signal acquisition strategy according to the geophone parameters; the signal acquisition module is used for performing ground motion signal acquisition based on a signal acquisition strategy; the signal processing module is used for processing the ground motion signals acquired by the signal acquisition module; the data analysis and storage module is used for performing data analysis and storage on the ground movement signals processed by the signal processing module; and the wireless communication module is used for being in wireless communication connection with an upper computer and sending the ground movement signal subjected to data analysis to the upper computer.

Description

Technical Field

[0001] This application relates to the technical field of seismic monitoring, and particularly to a frequency-tunable high-precision split seismograph. Background Art

[0002] Traditional seismographs adopt an integrated design, with the geophone integrated with the signal acquisition module, resulting in poor flexibility and high replacement costs of the equipment. Moreover, there are problems such as insufficient interface compatibility and low signal synchronization accuracy, making it difficult to meet the high-precision requirements of seismic and urban infrastructure monitoring. In addition, the existing equipment has a narrow frequency response range (usually only covering a single frequency band) and lacks the ability of intelligent parameter adaptation, which limits its application in complex scenarios. Summary of the Utility Model

[0003] To overcome at least to some extent the problems of poor flexibility, high replacement costs, and poor adaptation ability of seismograph equipment in the related art, this application provides a frequency-tunable high-precision split seismograph.

[0004] The solution of this application is as follows:

[0005] A frequency-tunable high-precision split seismograph, comprising:

[0006] A seismograph main control module and a geophone module group;

[0007] The seismograph main control module includes: a signal acquisition module, a signal processing module, a data analysis and storage module, a wireless communication module, and a standardized interface;

[0008] The geophone module group includes geophone modules with different frequencies;

[0009] The standardized interface is used to connect the geophone module and identify the geophone parameters, so that the seismograph main control module adapts a preset signal acquisition strategy according to the geophone parameters;

[0010] The signal acquisition module is used to collect ground motion signals based on the signal acquisition strategy;

[0011] The signal processing module is used to process the ground motion signals collected by the signal acquisition module;

[0012] The data analysis and storage module is used to perform data analysis and storage on the ground motion signals processed by the signal processing module;

[0013] The wireless communication module is used for wireless communication connection with the upper computer and sending the ground motion signals after data analysis to the upper computer.

[0014] Preferably, the seismograph main control module further includes:

[0015] Voltage monitoring module;

[0016] The voltage monitoring module is used to monitor the voltage and alarm the main control module of the seismograph when voltage abnormality occurs;

[0017] The main control module of the seismograph sends the voltage alarm information to the upper computer through the wireless communication module and conducts local light alarm.

[0018] Preferably, the main control module of the seismograph further includes:

[0019] Temperature monitoring module;

[0020] The temperature monitoring module is used to monitor the temperature and alarm the main control module of the seismograph when temperature abnormality occurs;

[0021] The main control module of the seismograph sends the temperature alarm information to the upper computer through the wireless communication module and conducts local light alarm.

[0022] Preferably, the main control module of the seismograph further includes:

[0023] Communication monitoring module;

[0024] The communication monitoring module is used to monitor the communication and alarm the main control module of the seismograph when communication abnormality occurs;

[0025] The main control module of the seismograph sends the communication alarm information to the upper computer through the wireless communication module and conducts local light alarm.

[0026] Preferably, the standardized interface is connected to the geophone module through a data cable.

[0027] Preferably, the geophone module group includes at least: 2Hz geophone module, 4.5Hz geophone module and 10Hz geophone module.

[0028] Preferably, the main control module of the seismograph further includes:

[0029] Power management module;

[0030] The power management module is connected to the signal acquisition module, signal processing module, data analysis and storage module, wireless communication module and external power supply.

[0031] Preferably, the main control module of the seismograph further includes:

[0032] Positioning module;

[0033] The positioning module is used to obtain positioning data and send the positioning data to the upper computer through the wireless communication module.

[0034] The technical solution provided by this application may include the following beneficial effects:

[0035] The frequency-tunable high-precision split seismograph in this application includes: a seismograph main control module and a geophone module group; the seismograph main control module includes: a signal acquisition module, a signal processing module, a data analysis and storage module, a wireless communication module, and a standard interface; the geophone module group includes geophone modules with different frequencies; the standard interface is used to connect the geophone module and identify the geophone parameters, so that the seismograph main control module adapts the preset signal acquisition strategy according to the geophone parameters; the signal acquisition module is used to collect ground motion signals based on the signal acquisition strategy; the signal processing module is used to process the ground motion signals collected by the signal acquisition module; the data analysis and storage module is used to perform data analysis and storage on the ground motion signals processed by the signal processing module; the wireless communication module is used to wirelessly communicate with the upper computer and send the ground motion signals after data analysis to the upper computer.

[0036] In this technical solution, the seismograph main control module and the geophone module group adopt a split design and are connected through a standard interface. The split design significantly improves the flexibility and environmental adaptability of the seismograph. The geophone module group includes geophone modules with different frequencies. Due to the split design, in specific practices, users can quickly replace geophones with different natural frequencies according to needs to adapt to different monitoring environments. The standard interface supports automatic identification of geophone parameters, simplifies the equipment deployment process, and improves system scalability.

[0037] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application.

[0039] Figure 1 is a schematic structural diagram of a frequency-tunable high-precision split seismograph provided by an embodiment of this application;

[0040] Figure 2 is a schematic structural diagram of a frequency-tunable high-precision split seismograph provided by another embodiment of this application.

[0041] Reference numerals: seismograph main control module - 1; geophone module - 2; signal acquisition module - 11; signal processing module - 12; data analysis and storage module - 13; wireless communication module - 14; standard interface - 15; voltage monitoring module - 16; temperature monitoring module - 17; communication monitoring module - 18; power management module - 19; positioning module - 20. Detailed implementation mode

[0042] Here, exemplary embodiments will be described in detail, and the examples are shown in the accompanying drawings. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation modes described in the following exemplary embodiments do not represent all implementation modes consistent with the present application. On the contrary, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0043] Embodiment 1

[0044] Figure 1 is a schematic structural diagram of a frequency-tunable high-precision split-type seismograph provided by an embodiment of the present application. Referring to Figure 1 , a frequency-tunable high-precision split-type seismograph includes:

[0045] A seismograph main control module 1 and a geophone module group;

[0046] The seismograph main control module 1 includes: a signal acquisition module 11, a signal processing module 12, a data analysis and storage module 13, a wireless communication module 14, and a standard interface 15;

[0047] The geophone module group includes a plurality of geophone modules 2 with different frequencies;

[0048] The standard interface 15 is used to connect to the geophone module 2 and identify the geophone parameters, so that the seismograph main control module 1 adapts a preset signal acquisition strategy according to the geophone parameters;

[0049] The signal acquisition module 11 is used to collect ground motion signals based on the signal acquisition strategy;

[0050] The signal processing module 12 is used to process the ground motion signals collected by the signal acquisition module 11;

[0051] The data analysis and storage module 13 is used to perform data analysis and storage on the ground motion signals processed by the signal processing module 12;

[0052] The wireless communication module 14 is used for wireless communication connection with the upper computer and sending the ground motion signals after data analysis to the upper computer.

[0053] In this technical solution, separating the sensing unit (geophone module 2) from the main control unit (seismograph main control module 1) not only facilitates the quick replacement of geophones with different frequency bands on site, but also enables the quick upgrade of the main control function without the need to replace the entire device. During maintenance, only the damaged module needs to be replaced, reducing the maintenance cost and shortening the downtime.

[0054] In specific practices, the detector module 2 with natural frequencies of 2 Hz, 4.5 Hz, and 10 Hz can be configured but is not limited to these values. The 32-bit ADC and adaptive filtering technology achieve a dynamic range that covers a wide frequency band from 2 Hz to 10 Hz, with a sensitivity error of ≤ ±10%, meeting the requirements of complex vibration monitoring. Specifically, the frequency can be adjusted to adapt to the monitoring needs of multiple scenarios. The detector modules 2 with multiple frequencies can be flexibly configured according to the monitoring objects (such as microseisms, infrasound, geothermal fluid dynamics, etc.), achieving coverage of ground motion signals from low frequencies to medium-high frequencies, and greatly enhancing the applicability in multiple fields such as seismology, engineering geology, and petroleum exploration.

[0055] The standardized interface 15 enables plug-and-play and adaptive acquisition. It can automatically identify the detector parameters and adjust the sampling rate, gain, and filtering strategy without manual intervention, significantly reducing the installation and debugging time and improving the intelligence level of the system.

[0056] In specific practices, the standardized interface 15 can be but is not limited to an aviation plug, which has the characteristics of multi-core high density and standardization.

[0057] Multi-core high density: It can carry multiple power supplies, analog signals, digital buses (CAN, RS-485, Ethernet), and auxiliary lines (such as I²C / SPI, GPIO) at one time;

[0058] Standardization: It can plug and unplug the mature plug specifications and supporting wire harnesses in the market, facilitating procurement and maintenance.

[0059] In terms of identifying the detector parameters, existing adaptive parameter detection schemes can be adopted, for example:

[0060] On the side of each detector module, a small-capacity EEPROM or SPI / NVRAM is pre-installed, and the core parameters of the module (sensitivity, frequency response, gain range, factory calibration coefficient, etc.) are written;

[0061] Among the signal pins of the plug, a pair of dedicated communication lines (I²C / SPI or single-wire serial port) are reserved for reading and writing the EEPROM;

[0062] When the module is inserted and powered on, the main control end automatically polls the EEPROM of each module through this pair of communication lines, reads the parameters, and verifies the integrity (CRC).

[0063] In specific practices, other adaptive parameter detection schemes can also be adopted, which are not limited here.

[0064] Integrated signal processing and analysis improve data quality. Integrating signal processing functions such as filtering, denoising, and feature extraction inside the device can preprocess the original signal locally and selectively transmit key events or compressed data, saving bandwidth, improving transmission efficiency, and avoiding the costs associated with storing large amounts of raw data.

[0065] The wireless communication module 14 supports 4G-LTE real-time data transmission and MQTT protocol communication, is compatible with various data formats, realizes millisecond-level data transmission through LTE and satellite synchronization technology, and provides remote data analysis functions in combination with the host computer software.

[0066] The split-type seismograph in this embodiment is designed to be rugged and durable, supports external power supply, and is suitable for long-term deployment in key infrastructures such as earthquake-prone areas, urban buildings, highways, bridges, tunnels, slopes, airports, and dams, providing effective support for earthquake monitoring, road surface vibration monitoring, and underground safety monitoring and early warning systems.

[0067] Embodiment 2

[0068] Refer to Figure 2 , the main control module 1 of the seismograph further includes:

[0069] A voltage monitoring module 16;

[0070] The voltage monitoring module 16 is used to monitor the voltage and alarm the main control module of the seismograph when the voltage is abnormal;

[0071] The main control module 1 of the seismograph sends the voltage alarm information to the host computer through the wireless communication module 14 and gives a local light alarm.

[0072] Voltage anomalies are often the initial symptoms of equipment failures, unstable power supplies, or short circuits in the lines. If not discovered and handled in a timely manner, they may lead to signal acquisition interruptions, data damage, or equipment damage. The real-time voltage monitoring and alarm mechanism can give an early warning before the fault deteriorates further, thus ensuring the continuous and stable operation of the entire seismograph system.

[0073] When the voltage anomaly alarm is triggered, the host computer can know that it is a voltage problem rather than a sensor or communication failure, so as to quickly locate the cause of the fault; the maintenance personnel can check the power cord, battery, or voltage regulation module targeted after receiving the early warning, reducing the time waste caused by blind maintenance.

[0074] In the case of network interruption or host computer failure, the local light alarm can still remind the on-site operators to immediately pay attention to the power supply problem, avoiding the risk caused by the communication link interruption being ignored, thus further improving the multi-level redundant early warning system.

[0075] Refer to Figure 2 , the main control module 1 of the seismograph further includes:

[0076] Temperature monitoring module 17;

[0077] The temperature monitoring module 17 is used to monitor the temperature and alarm the main control module of the seismograph when the temperature is abnormal;

[0078] The main control module 1 of the seismograph sends the temperature alarm information to the upper computer through the wireless communication module 14 and conducts local light alarm.

[0079] The main control module 1 of the seismograph integrates a variety of electronic components internally, such as an analog-to-digital converter, an amplifier, a microprocessor, and a wireless communication unit. These components are very sensitive to temperature. High temperature may cause performance degradation, increased thermal noise of the amplifier, or triggering of chip overheat protection; low temperature may cause capacitor failure or material brittle fracture. Temperature monitoring can detect abnormal temperature in time and prevent serious damage.

[0080] Once the temperature is abnormal (high temperature or low temperature) beyond the preset threshold, the temperature monitoring module 17 alarms the main control module; the main control module then sends the "temperature abnormal" information to the upper computer through the wireless communication module 14 and cooperates with the local light alarm to remind.

[0081] It should be noted that referring to Figure 2 , the main control module 1 of the seismograph further includes:

[0082] Communication monitoring module 18;

[0083] The communication monitoring module 18 is used to monitor the communication and alarm the main control module of the seismograph when the communication is abnormal;

[0084] The main control module 1 of the seismograph sends the communication alarm information to the upper computer through the wireless communication module 14 and conducts local light alarm.

[0085] The real-time and continuity of seismological monitoring data are crucial for early warning and seismological research. The interruption of the communication link or the deterioration of the signal quality will lead to data delay, loss, or disorder. Communication quality fluctuations are common in bad weather, terrain occlusion, or congestion caused by multiple device access. The communication monitoring module can alarm immediately when the first packet loss or link disconnection occurs, ensuring that the operation and maintenance personnel can restore the communication in time and avoid monitoring blind spots.

[0086] Communication monitoring can cooperate with other modules (voltage, temperature) to form comprehensive fault diagnosis, avoid misjudgment, and improve the system's adaptability to environmental changes.

[0087] Through the dual mechanisms of local light alarm and remote upper computer alarm, it can be ensured that whether in the remote monitoring center or on-site, the communication fault can be known in time, and a quick response and remedial measures can be taken (such as replacing the antenna, adjusting the base station position, or switching the network).

[0088] It should be noted that the standardized interface 15 is connected to the geophone module 2 through a data cable.

[0089] Compared with wireless connection, wired data cable connection has more stable bandwidth, lower latency and higher anti-interference ability, which can ensure lossless transmission and real-time response of high sampling rate and broadband ground motion signals, and is especially suitable for high-precision monitoring requirements. The standardized data cable interface facilitates quick plugging and unplugging on-site, fault troubleshooting and module replacement, reduces the risk of incorrect wiring and secondary debugging, and improves the engineering implementation efficiency.

[0090] The data cable can be extended according to requirements. Under normal conditions, it can be extended up to 10 meters at most, and supports signal relay and local storage redundancy. In areas with weak signals, extend the data cable between the geophone and the main control module, and deploy the main control module in a signal-stable area to ensure real-time data transmission. At the same time, use TF card local storage as redundant backup to prevent data loss caused by communication interruption.

[0091] It should be noted that referring to Figure 2 , the main control module 1 of the seismograph further includes:

[0092] A power management module 19;

[0093] The power management module 19 is connected to the signal acquisition module 11, the signal processing module 12, the data analysis and storage module 13, the wireless communication module 14 and an external power supply.

[0094] The power management module 19 can monitor the power consumption of each sub-module in real time, dynamically adjust the voltage and current output, avoid equipment damage caused by power overload or surges, and reduce the impact of power supply fluctuations on signal quality through means such as voltage stabilization and filtering. Combined with the external power supply interface, seamless switching of multiple power supplies such as mains electricity, storage batteries, and solar panels can be achieved; when one power supply fails or is insufficient, the system can automatically switch to the backup power supply to ensure continuous monitoring. Combined with the voltage monitoring module 16 and the temperature monitoring module 17, it can comprehensively monitor parameters such as power supply temperature and voltage, and trigger local or global power-off protection in case of abnormalities to prevent equipment overheating or overvoltage, further improving the system security.

[0095] It should be noted that referring to Figure 2 , the main control module 1 of the seismograph further includes:

[0096] A positioning module 20;

[0097] The positioning module 20 is used to obtain positioning data and send the positioning data to the upper computer through the wireless communication module 14.

[0098] The main control module 1 of the seismograph is built-in with GPS or Beidou positioning.

[0099] For a seismograph with distributed deployment, accurate geographical location is the basis for earthquake source location, array analysis, and site response research. The positioning module 20 can obtain information such as longitude, latitude, and elevation in real time to ensure the spatial accuracy during subsequent data processing and joint analysis of multi-station networks. The host computer system can perform visual display, geographical information system (GIS) analysis, and alarm push on each monitoring point based on the positioning information, helping the management personnel intuitively grasp the equipment distribution and status, and optimize on-site inspections and resource scheduling.

[0100] It can be understood that the same or similar parts in the above embodiments can be referred to each other, and the content not detailed in some embodiments can be referred to the same or similar content in other embodiments.

[0101] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0102] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A frequency adjustable high-precision split-type seismograph, characterized in that: include: Seismometer main control module and geophone module group; The seismograph main control module includes: a signal acquisition module, a signal processing module, a data analysis and storage module, a wireless communication module and a standardized interface; The detector module group includes multiple detector modules with different frequencies; The standardized interface is used to connect the detector module and identify the detector parameters, so that the seismometer main control module adapts the preset signal acquisition strategy according to the detector parameters; The signal acquisition module is used to collect earthquake signals based on the signal acquisition strategy; The signal processing module is used to process the seismic signal collected by the signal collection module; The data analysis and storage module is used to perform data analysis and storage on the earthquake signal processed by the signal processing module; The wireless communication module is used to wirelessly connect to a host computer and send the seismic signal after data analysis to the host computer.

2. The frequency-adjustable high-precision split-type seismograph according to claim 1 is characterized in that: The seismometer main control module also includes: Voltage monitoring module; The voltage monitoring module is used to monitor the voltage and send an alarm to the seismometer main control module when a voltage abnormality occurs; The seismograph main control module sends the voltage alarm information to the host computer through the wireless communication module and performs a local light alarm.

3. The frequency-adjustable high-precision split-type seismograph according to claim 1 is characterized in that: The seismometer main control module also includes: Temperature monitoring module; The temperature monitoring module is used to monitor the temperature and send an alarm to the seismograph main control module when the temperature is abnormal; The seismograph main control module sends the temperature alarm information to the host computer through the wireless communication module and performs a local light alarm.

4. The frequency-adjustable high-precision split-type seismograph according to claim 1, characterized in that: The seismometer main control module also includes: Communication monitoring module; The communication monitoring module is used to perform communication monitoring and send an alarm to the seismograph main control module when communication anomalies occur; The seismograph main control module sends the communication alarm information to the host computer through the wireless communication module and performs a local light alarm.

5. The frequency-adjustable high-precision split-type seismograph according to claim 1, characterized in that: The standardized interface is connected to the detector module via a data line.

6. The frequency-adjustable high-precision split-type seismograph according to claim 1, characterized in that: The detector module group includes at least: a 2 Hz detector module, a 4.5 Hz detector module and a 10 Hz detector module.

7. The frequency-adjustable high-precision split-type seismograph according to claim 1, characterized in that: The seismometer main control module also includes: Power management module; The power management module is connected to the signal acquisition module, the signal processing module, the data analysis and storage module, the wireless communication module and the external power supply.

8. The frequency-adjustable high-precision split-type seismograph according to claim 1, characterized in that: The seismometer main control module also includes: Positioning module; The positioning module is used to obtain positioning data and send the positioning data to the host computer through the wireless communication module.

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