271 results about "Seismometer" patented technology

The invention discloses a dynamic geological survey system and a construction simulation method. The dynamic geological survey system comprises an intelligent sensing and data acquisition module and a multi-source data fusion processing module, the intelligent sensing and data acquisition module comprises a Raman scattering optical fiber strain sensor array, a three-component seismometer monitoring network and a distributed optical fiber pressure sensing subsystem; the Raman scattering optical fiber strain sensor array, the three-component seismometer monitoring network and the distributed optical fiber pressure sensing subsystem form a multi-dimensional sensing network for shield construction geological monitoring. By means of the integrated intelligent sensing and data acquisition module, geological changes in the shield construction process can be monitored. The Raman scattering optical fiber strain sensor array, the three-component seismometer monitoring network and the distributed optical fiber pressure sensing subsystem jointly form a multi-dimensional sensing network, geological strain, microseismic events, pore water pressure and other key information can be captured, and comprehensive geological data support is provided for construction.

The invention discloses an urban karst water guide channel detection system and method based on earthquake Krauklis waves. The urban karst water guide channel detection system comprises a piezoelectric type vibroseis, an array type earthquake receiving system and a multi-wave seismograph. The piezoelectric vibroseis is used for exciting seismic waves; and the multi-wave seismograph is used for acquiring seismic data acquired by each seismic acceleration sensor in the array type seismic receiving system. The structure can ensure the precision of seismic wave data acquisition each time; separating and extracting Krauklis waves from the acquired seismic wave data by adopting an energy-frequency double-selection method; then, based on the frequency dispersion characteristic of Krauklis waves, a mapping model of crack opening and wave field response is established; and finally, determining the opening degree of the urban karst water guide channel according to the mapping model, and performing inversion to obtain the dynamic flow of the urban karst water guide channel. Through treatment in the mode, the opening degree and the dynamic flow of the urban karst water guiding channel can be monitored, and finally prevention and control over hidden geological disasters are effectively improved.

The invention discloses a stratigraphic structure scanning method based on a single-station six-component seismograph. The stratigraphic structure scanning method comprises the following steps: S1, selecting one or more measuring points in a target area; a single-station six-component seismograph is installed at each measuring point to acquire a passive source signal; s2, calculating horizontal components of translation and rotation according to passive source signal six-component data of the measuring point; s3, according to component data characteristics in the six-component data of the passive source signal of the measuring point and relation characteristics among the component data, extracting a phase velocity frequency dispersion curve at the measuring point, and obtaining a quantitative relation between the phase velocity and the frequency; s4, according to the phase velocity frequency dispersion curve and the quantitative relation, calculating relative velocities at different frequency points of the corresponding measuring points; s5, establishing a mapping relation between the relative speed and the depth according to the quantitative relation, and obtaining an underground structure of the corresponding measuring point; and S6, according to the underground structure of each measuring point of the target area, completing stratigraphic profile information drawing or underground three-dimensional structure inversion of the target area.

The invention relates to the technical field of seismic exploration, and discloses a Beidou short message communication node type seismograph based on efficient edge data compression, and the seismograph comprises a main control module which is responsible for controlling other modules and cooperating with the other modules to achieve the functions of the other modules; the vibration acquisition module is responsible for acquiring seismic data; the data storage module is used for storing seismic data and configuration parameters during acquisition; and the data compression module is used for compressing the seismic data before the seismic data is transmitted to the satellite. The Beidou short message communication module is used for transmitting the compressed seismic data to a satellite through a Beidou short message; and the power supply module is used for supplying power to other modules. According to the invention, Beidou short message communication and edge data compression are combined, so that the seismograph can realize high-sampling-rate seismic waveform data quasi-real-time transmission in areas without coverage of wireless communication networks such as Wifi and 4G, and therefore, the seismograph can be applied to more complex layout environments and meet the timeliness requirements of seismic monitoring and analysis.

The invention discloses an improved vibration compensation method suitable for an atom interference gravimeter. The method comprises the following steps: acquiring an atom interference signal and a vibration voltage signal output by a seismometer; initializing population parameters of the improved whale optimization algorithm, wherein the population parameters comprise a search space of a population size, a maximum number of iterations, a gain coefficient K and a delay coefficient tau; the method comprises the following steps: generating an initial whale population by adopting a method of combining Logistic chaotic mapping and Latin hypercube sampling LHS; calculating a phase shift caused by vibration noise and an atomic interference phase delta phi, and calculating the fitness of the whale individual by taking a root-mean-square error of compensated interference fringes as a target function; iteratively updating the population position through an improved whale optimization algorithm, outputting an optimal gain coefficient and an optimal delay coefficient, and obtaining an atomic interference signal after vibration compensation; according to the atomic interference gravimeter vibration compensation method, the global search capability, the local development precision and the stability of a vibration compensation algorithm are improved.

The invention provides an active and passive source metal mine seismic exploration method, which comprises the following steps of: acquiring geological exploration data of a target area, and analyzing and judging to obtain a metallogenic favorable part of the target area; obtaining seismic geologic features of the target area and distribution features of natural field sources; according to the acquired geological exploration data, the passive source seismometers are arranged in a grid mode in a target area to form a passive source detection grid; the active source seismographs are arranged in a cross shape at the favorable metallogenic part to form two active source detection lines; artificial source seismic waves are excited, active source seismic data of the active source seismograph and passive source seismic data of the passive source seismograph are collected, and after the artificial source seismic waves are excited, the passive source seismic data of the passive source seismograph are continuously collected. The problem of active and passive source seismic data fusion acquisition is solved, the exploration cost is reduced, and the working efficiency and the detection precision are improved.

The invention relates to the field of mine geophysical exploration, and discloses a fully mechanized coal mining face geological abnormal area prediction method based on multi-source data, and the method comprises the steps: carrying out the detection of a fully mechanized coal mining face through a radio pit penetrating device and a slot wave seismograph, and obtaining a working face CT image and a slot wave energy attenuation coefficient image; analyzing a distribution rule of a plurality of abnormal prompt areas in the working face CT image, and delimiting a plurality of candidate abnormal areas to obtain an average abnormal amplitude value of each candidate abnormal area; analyzing a plurality of slot wave attenuation high value abnormal regions in the slot wave energy attenuation coefficient imaging, and carrying out overlapping region calculation on the plurality of candidate abnormal regions to obtain a plurality of overlapping regions; carrying out drilling point arrangement and drilling according to the plurality of overlapped areas, and measuring a plurality of drilling trajectories and drilling data corresponding to each drilling point through a trajectory instrument; and according to the plurality of drilling trajectories and the drilling data corresponding to each drilling point, abnormal region prediction data is generated, so that accurate prediction of the abnormal region is realized.

The invention provides a side slope crack passive source seismic wave imaging method, which adopts a multi-wave multi-component seismograph to simultaneously collect a plurality of seismic wave signals on three components, including surface waves, body waves and the like. According to the design, the richness of the data is remarkably improved, so that the physical characteristics of various seismic wave signals can be comprehensively utilized for inversion analysis in data processing. Through combined processing and constraint of different wave types, the problem of multiplicity of solutions in geophysical inversion can be effectively reduced, and the stability and reliability of a result are improved. In addition, due to acquisition of multi-component data, imaging is more comprehensive, and particularly, the method has obvious advantages in description of fracture directivity and geometrical characteristics.

The invention belongs to the technical field of side slope micro-seismic signal analysis and identification, and relates to an automatic side slope rolling stone micro-seismic signal detection method, which comprises the following steps: acquiring signals by using a node seismograph, and establishing a database; acquiring a time-frequency diagram by adopting continuous wavelet transform; building a convolutional neural network introducing a double-attention mechanism, and obtaining a network weight parameter with a loss value small enough by training a loss value reduction function; carrying out abnormal signal pickup on the data detected in real time by using a de-noised MER-AIC method; and taking a pickup signal as the input of the convolutional neural network after continuous wavelet transform, and giving an identification result by a trained model to realize automatic detection. According to the method, abnormal signals can be fully automatically and accurately picked up and side slope rolling stone micro-seismic signals can be detected in data which are collected in real time in a rock side slope and mixed with various kinds of noise, intelligence and automation of real-time detection work of rolling stone events are achieved, dependence on manpower is reduced, and the recognition efficiency is improved.

The invention discloses a seismograph external anti-explosion protection structure suitable for coal mine monitoring, and belongs to the technical field of coal mine monitoring, the seismograph external anti-explosion protection structure comprises a supporting seat, a protective cover is fixedly mounted on the upper surface of the supporting seat, a notch is formed in the upper surface of the protective cover, and a movable door is slidably mounted on the inner wall of the notch; a seismograph is arranged on the upper surface of the supporting seat, an induction assembly is arranged on the inner wall of the supporting seat, a protection assembly is arranged on the outer surface of the protection cover, and a positioning assembly is arranged on the upper surface of the supporting seat; according to the device, the sensing assembly is arranged, the ground drilling column is inserted into a hole in the ground surface, then a sensor makes contact with the inner wall of the hole, on one hand, the ground drilling column is inserted into the ground, certain stability can be provided for the supporting base, and it is guaranteed that the supporting base cannot move or shake during vibration; on the other hand, the sensor makes contact with the ground, the monitoring speed is higher during monitoring, and meanwhile the monitoring result is more accurate.

A curtain grouting reinforcement method for a tunnel group in a deep backfill area, and a reinforcement effect assessment method. The reinforcement method comprises the following steps: S1, calibrating hole positions according to design; S2, mounting a drilling rig; S3, drilling holes; S4, burying orifice pipes; S5, performing grouting; S6, sealing the holes; and S7, performing the next drilling and grouting cycle. Investment saving and safe and efficient construction are achieved, tunnel surrounding rocks can be fully reinforced, engineering geological conditions are improved, tunnel cavern stability is good, and ground surface settlement is small. The reinforcement effect assessment method comprises an inspection-hole drilling method, multi-wave and multi-component engineering seismograph inspection, assessment based on a high-definition drilling video, assessment based on soil and stone mixture parameter changes before and after grouting, etc., such that multi-angle comprehensive analysis can be achieved, grouting reinforcement effect assessment is more accurate, and a curtain grouting effect assessment system is further improved, thereby providing research ideas for inspecting and assessing the grouting effect in soil-rock mixed backfill areas.

The invention discloses a consistency detection method, device and system for large-scale seismic signal acquisition equipment, and relates to the technical field of geophysical exploration. The method is executed by computer equipment in a large-scale seismic signal acquisition equipment consistency detection system, and after background noise original data continuously and synchronously acquired by a plurality of seismic signal acquisition equipment is received, an accumulated power spectrum variance value of each acquisition equipment is obtained through preprocessing and multi-step calculation in sequence; and finally, according to the accumulated power spectrum variance value of each acquisition device and the distance from each acquisition device to the layout center position, determining the acquisition device with an abnormal relationship in the relationship dimension of the accumulated power spectrum variance and the acquisition time or the relative distance. The purpose of efficient, reliable and automatic consistency detection on large-scale seismic signal acquisition equipment can be achieved, and then the detection result can accurately reflect the performance state of a seismic instrument.

The application relates to the technical field of geological exploration, in particular to a wireless seismograph field burying equipment and a working method, which comprises a module square warehouse, a drum stock bin is arranged in the module square warehouse, a cloth drilling integrated machine and a mechanical hand are arranged on one side of the drum stock bin; the drum stock bin comprises a drum stock bin support, one end of the central shaft of the drum stock bin support is connected with a driven chain wheel, one rotary disc is arranged on the inner side of each of the two drum stock bin supports, the two rotary discs are hinged with the outer side wall of a code frame, and the wireless seismograph is placed in the code frame; the cloth drilling integrated machine comprises a moving platform back plate, a guide rail is arranged on the outer side of the moving platform back plate, a first hydraulic cylinder is arranged on the top of the guide rail, a hydraulic motor is arranged on the top of a fixed connecting plate, an oil cylinder is hinged on the outer side of the fixed connecting plate, the oil cylinder is hinged with a lower pressing semicylinder, a soil pressing outer sleeve and a limiting cylinder are arranged below the lower pressing semicylinder, and the side wall of the limiting cylinder is connected with a slide guide cylinder; the mechanical hand can clamp the wireless seismograph in the code frame and send the wireless seismograph into the cloth drilling integrated machine.

The invention relates to the technical field of underwater monitoring, and provides a seabed earthquake observation base station which comprises a seabed base, a seismograph, a floating ball, a locking piece and a protective cylinder, the protective cylinder is fixedly installed on the seabed base, the floating ball is connected with the seismograph through a tying rope, the seismograph is installed in the protective cylinder in a pluggable mode, and the protective cylinder is provided with a lock hole; the seismograph has a first state and a second state in the laying process; in the first state, the floating ball is fixed to the seismograph, the locking piece penetrates through the lock hole, and the seismograph is locked in the protective cylinder. And in the second state, the locking piece retreats from the protective cylinder, the seismograph is pulled out of the protective cylinder under the action of external force, and the cable is released so that the floating ball pulls the seismograph to sink into the landfill pit of the seabed. The seismograph can stably sink into the landfill pit of the seabed, the inclination angle of the seismograph is small, the laying difficulty of the whole seabed seismological observation base station is small, and the monitoring effectiveness of the seismograph is improved.

The utility model discloses a node seismograph single-shot data real-time monitoring system. The system comprises a node seismograph and a node seismograph numerical control module which are located on the ground, and an unmanned aerial vehicle module and an air mounting module which are located in the air. Wherein a plurality of node seismographs are distributed; the unmanned aerial vehicle module can fly above the node seismograph; the aerial mounting module is carried on the unmanned aerial vehicle module, and the aerial mounting module is in communication connection with the node seismograph so as to receive data of the node seismograph and send the data of the node seismograph to the node seismograph numerical control module; the node seismograph numerical control module is in communication connection with the air mounting module so as to monitor the single-shot data state of the node seismograph in real time. Compared with the situation that internal data of a blind acquisition seismograph used in traditional large-scale active source seismic exploration operation can only be exported by means of a special data export box, the system can recover all the data of the node seismograph as long as the unmanned aerial vehicle flies to the sky above the node seismograph.

The invention discloses a seabed vibration monitoring system based on offshore engineering. The seabed vibration monitoring system comprises a waterproof shell, a control box, two seismometers, two seismic measurement adjusting mechanisms, an anchoring mechanism, a connecting cable, a storage battery pack, an upper computer, a recycling auxiliary mechanism, an accelerometer and a plurality of hydrophones. According to the seabed vibration monitoring system, the waterproof shell can be anchored on the seabed through the anchoring mechanism, so that the reliability of vibration monitoring of an internal seismometer is guaranteed, and long-time stable and reliable operation of the seismometer can be maintained; by means of the recycling auxiliary mechanism, the winch can be conveniently connected to the lifting lug during recycling, so that personnel do not need to dive for fixing, and recycling is more convenient, faster and safer; the two seismometer adjusting mechanisms can be used for adjusting the north-seeking angles and the horizontal angles of the two seismometers, so that the measurement precision of the seismometers is guaranteed, the levelness and the north-seeking angles of the two seismometers can be maintained regularly during long-term use, and long-term reliable operation of the seismometers is guaranteed.

The invention discloses a mine geology advanced detection and real-time monitoring system based on a six-component seismograph, and relates to the technical field of coal mine underground seismic exploration. The six-component seismographs are respectively arranged on coal walls of a coal face and a driving face, synchronously collect original data at the same time, and upload the collected original data to the background server through the wireless repeater and the industrial looped network; the background server converts the original data into a geophysical inversion result; and the background server carries out real-time dynamic interpretation and artificial intelligence dynamic early warning on parameters of the stratum form, the geological structure and the rock mechanical property according to a geophysical inversion result, uploads early warning information to a control center and distributes the early warning information to personnel and mechanical equipment of a working face. Prediction and early warning of parameters such as stratum form, geologic structure and rock mechanical property are realized, and dynamic high-precision spatio-temporal information is provided for an intelligent mine transparent geologic support system.

The invention relates to the technical field of ocean monitoring, and provides a seabed foundation which comprises an outer cover, an anti-sedimentation plate, a mounting support, a floating ball, a recovery rope and a release mechanism, the outer cover is connected with the anti-sedimentation plate through a breaking bolt to form a mounting space, the mounting support is fixed to the inner wall of the outer cover and located in the mounting space, and the floating ball is connected with the recovery rope. The mounting space is divided into accommodating cavities so as to accommodate the seismograph; the recovery rope is respectively connected with the mounting bracket and the floating ball, and in a use state, the release mechanism fixes the floating ball to the top wall of the outer cover; in a recovery state, the release mechanism releases the floating ball, the floating ball drives the outer cover and the mounting bracket to float to the sea surface through the recovery rope, and the breaking bolt is used for breaking when the recovery rope is pulled by external force, so that the anti-settling plate is separated from the outer cover. The recycling convenience of the seabed base is improved, frogmen are not needed, and the recycling efficiency of the seabed base is high.

The utility model discloses a geological landslide monitoring device in the technical field of geological monitoring, which comprises a landslide, a base is mounted at the top of the landslide, a mounting rack is mounted at the top of the base, sliding chutes are formed below the outer walls of the two sides of the mounting rack, a moving plate is mounted in the mounting rack, and the moving plate is mounted on the base. The geological landslide vibration sense monitoring device is reasonable in structure, the motor is installed in the U-shaped frame on the movable plate, the drill rod is installed at the output end of the motor, and according to the geological landslide vibration sense monitoring depth requirement, the geological landslide vibration sense monitoring device can monitor the vibration sense of the geological landslide according to the geological landslide vibration sense monitoring depth requirement. The motor drives the drill rod to drill holes in a geological landslide monitoring area, the drill rod is driven by the hydraulic cylinder to descend during the period, after the drill rod drills to the needed depth, the drill rod does not need to be lifted or kept at the corresponding position, and the earthquake sense from the geological landslide depth can be monitored according to the seismograph on the moving plate, so that geological landslide earthquake monitoring processing is achieved.

The invention discloses an unmanned aerial vehicle seismograph for a hard rock area. The unmanned aerial vehicle seismograph comprises an unmanned aerial vehicle body, the main engine connecting frame is rotationally connected to the lower portion of the unmanned aerial vehicle body, and the main engine connecting frame and the unmanned aerial vehicle body are locked and fixed through a first locking device; the torque booster is arranged below the unmanned aerial vehicle body and used for amplifying torque provided when the unmanned aerial vehicle body rotates; and the conversion system comprises a connecting disc, a second locking device and a converter, and the connecting disc is connected to the torque booster. The unmanned aerial vehicle has the advantages that the seismograph can be accurately arranged through the unmanned aerial vehicle body, and the attitude stability of the seismograph is ensured; secondly, reliable contact between the sensor and a target detection earth surface can be realized through components such as a drilling and digging system, so that the accuracy of receiving seismic wave signals is improved; and thirdly, after the device completes the collection work, the device can be recovered by controlling the unmanned aerial vehicle body.

The purpose of the present invention is to provide a method for synthesizing the acceleration waveform of a destructive earthquake at a fixed station. The method relies on the empirical Green's function method, firstly obtains a relatively accurate source model and source parameters by synthesizing the acceleration time history of a strong motion instrument, and then uses the obtained source model and source parameters in the simulation of the large earthquake acceleration waveform at a broadband seismograph, and uses the small earthquake waveform recorded by the broadband seismograph as the Green's function to synthesize the large earthquake acceleration waveform at the broadband seismograph.

A micro-motion exploration method based on Koch fractal curve, first determine the target area, then set the order N to zero, then determine the zero-order Koch triangle, then determine the first-order to N-order Koch triangle in turn, until the order N is the final value, then bring the order N into the Koch fractal curve to generate the N-order Koch triangle graph, the N-order Koch triangle graph includes a plurality of sharp points and a center point, all sharp points and the center point are the layout points of the seismograph; then lay out the seismograph on the layout points, then monitor by the seismograph to obtain the micro-motion signal, then obtain the shear wave velocity three-dimensional structure, after laying out, a plurality of Koch triangles with different edge lengths are obtained, so the micro-motion signals with different station spacings are obtained, then the shear wave velocity three-dimensional structures of multiple depths can be obtained; without multiple laying, the exploration efficiency is higher. Therefore, the design can obtain the shear wave velocity three-dimensional structures of multiple depths at the same time, and the exploration efficiency is higher.

The invention discloses a disaster-causing tectonic earthquake advanced detection device and method capable of stopping drilling along with a hole, a hollow rod body is of a double-layer structure formed by an inner pipe and an outer pipe, and an annular channel between the inner pipe and the outer pipe serves as a first water injection channel; the shock absorber is installed in the inner pipe, away from the drill bit and used for containing the node type seismograph, a second water injection channel is formed in the shock absorber, and the hydraulic pressurization system is used for injecting high-pressure water into the inner pipe. When water is injected through the first water injection channel, the strong spring, the metal impact block and the piston can be reset. According to the mode of conducting seismic detection while drilling, under the condition of adapting to the drilling seismic construction environment, drilling construction is achieved, meanwhile, the capability of detecting a front disaster-causing structure is achieved, and the advantages of being long in distance, large in range and high in precision are achieved.

The application relates to the technical field of detection equipment, and discloses a seismic signal collection device and a collection method for geophysical detection, which comprises multiple node-type seismographs; further comprises a holding frame, the holding frame is composed of two end plates, connecting frames and a handle, two connecting frames are fixed at two ends of the handle, the bottoms of the two connecting frames are fixed with the two end plates respectively, and a plurality of placing mechanisms are arranged between the two end plates; and a plurality of ground insertion rods, a plurality of insertion holes matched with the ground insertion rods are arranged on the shell of the node-type seismograph, and the plurality of ground insertion rods are correspondingly inserted into the plurality of placing mechanisms, the holding frame designed in the application can be docked with the plurality of ground insertion rods, a plurality of node-type seismographs are sleeved outside the plurality of ground insertion rods which are transversely inserted in the placing mechanisms, so that a staff member can take a large number of node-type seismographs at a time, a plurality of measuring points can be arranged at a time, and the arrangement efficiency is improved.

This scheme relates to a micro-seismic exploration construction method. The method includes: the computer equipment obtains the construction conditions and the construction layout diagram, and determines the initial construction parameters according to the construction conditions; the computer equipment collects the construction site data, determines the target construction parameters according to the construction site data and the construction conditions, modifies the construction layout diagram according to the target construction parameters, and generates the on-site construction operation diagram; the engineer deploys the seismograph at the construction site according to the on-site construction operation diagram, and uses the seismograph to roll-collect the exploration micro-seismic data for each measuring point; the seismograph imports the exploration micro-seismic data into the computer equipment, and the computer equipment processes the exploration micro-seismic data and extracts the dispersion curve, and generates the micro-seismic exploration profile according to the exploration micro-seismic data and the dispersion curve. The seismograph is reasonably deployed according to the construction conditions and the construction site data to complete the construction. Multiple measuring points can be explored and rolled at the same time in one construction, which improves the efficiency of micro-seismic exploration.

The invention discloses an underground structure scanning method for a controlled active source. According to the method, a known signal generated by an active source is equivalent to a record of a virtual station, the virtual station and an actual six-component seismograph station form a station pair, and the phase velocity of a wave under the distance is estimated through a phase difference / travel time difference between the virtual station and the actual six-component seismograph station and a geometric distance relationship between the source and the station; the obtained phase velocity is actually equivalent to a frequency dispersion curve at the midpoint of the connecting line of the source and the station, so that the phase velocity-depth structure from the source to the midpoint of the station can be obtained by performing inversion by using the obtained frequency dispersion curve; as the active source moves in the measurement area, a group of signals can be generated at different positions respectively, and a series of virtual midpoints are formed for the single-station six-component seismograph, so that the density of measurement points is remarkably increased in space. On the basis, through combination with an inversion result of a single station, three-dimensional underground velocity structure modeling with high credibility and high spatial resolution can be realized.

A method for detecting an underground cavity by using an irregular three-dimensional array belongs to the technical field of underground detection, and is characterized in that a plurality of high-sensitivity digital seismographs are utilized, a detection area is well covered with a ray path, and each digital seismograph collects irregular micro-amplitude vibration information of the surface of the detection area all the time; a surface wave signal is extracted from micro-amplitude vibration information, then a cross-correlation function between digital seismometers is obtained through background noise cross-correlation calculation and superposition, and a Rayleigh wave phase velocity frequency dispersion curve is obtained based on a multiple filtering and extended space autocorrelation (ESPAC) method. And finally, inverting a three-dimensional phase velocity structure below the detection area based on the frequency dispersion curve of each grid node, and performing two-dimensional or three-dimensional mapping display on an inversion calculation result through mapping software. The method is simple in field work operation, flexible in laying according to field conditions, simple and rapid in data processing flow and mature in algorithm, and can rapidly and accurately position the underground cavity position.

The invention discloses an intelligent self-stabilization very-broadband seismometer which is arranged on a platform base and comprises a shell and three mechanical pendulum bobs arranged in the shell, and further comprises a detection mechanism and an adjusting mechanism, automatic zero setting of the very-broadband seismometer is achieved through mutual cooperation of the detection mechanism and the adjusting mechanism, zero setting commands are not needed in the whole process, and automation is high. Specifically, the adjusting mechanism comprises a rotating table fixed to the table base, a mounting base is arranged on the rotating table, and a plurality of angle adjusting rods are arranged between the mounting base and the rotating table; the shell is assembled on the mounting base, the detection mechanism comprises an assembling bin covering the peripheral side of the mechanical pendulum bob, an avoiding distance is formed between the bin wall of the assembling bin and the mechanical pendulum bob, and multiple sets of distance measuring modules matched with one another are arranged on the peripheral side of the side wall of the mechanical pendulum bob and the peripheral side of the side wall of the assembling bin in the vertical direction; the distance measuring module constructs a zero setting coordinate of the mechanical pendulum bob according to distance data between the mechanical pendulum bob and the assembly bin, and the rotating table and the mounting base automatically perform zero setting on the mechanical pendulum bob according to the zero setting coordinate.

The invention belongs to the technical field of node type seismographs, and particularly relates to node type seismograph automatic disassembly and assembly equipment which comprises a conveying table and a PLC electrically connected with the conveying table, posture constraint assemblies for adjusting the posture of a storage box are symmetrically installed on the conveying table, and an installation frame is fixedly installed above the middle of the conveying table. A control unit electrically connected with the PLC is arranged on the mounting frame, the control unit drives the dismounting panel to move to enable mounting holes formed in the dismounting panel to be matched with node seismographs in the storage box, and mounting holes with the same number as the node seismographs in the storage box are uniformly formed in the dismounting panel; and a small servo motor electrically connected with the PLC is fixedly arranged in each mounting hole. According to the invention, the automatic separation of the data packet and the battery pack is realized, the whole box of node seismograph can be disassembled or assembled each time, the working efficiency is high, the workload is reduced, and the processing time is shortened.

The utility model provides a low noise ultra wide band seismometer, including seismometer casing, magnetic shielding casing, heat preservation cover, trisecting mechanical pendulum and seismometer circuit, magnetic shielding casing and heat preservation cover are both arranged in seismometer casing, heat preservation cover is arranged outside magnetic shielding casing, and the seismometer circuit is arranged in the seismometer casing. The internal space of the seismometer shell is divided into a mechanical pendulum body mounting cavity and a circuit mounting cavity by the magnetic shielding shell, the three-direction mechanical pendulum body is mounted in the mechanical pendulum body mounting cavity, and the seismometer circuit is mounted in the circuit mounting cavity; the three-component mechanical pendulum body comprises three mechanical pendulum bodies, the three mechanical pendulum bodies are evenly distributed in the three-component direction by 120 degrees, each mechanical pendulum body comprises a pendulum body support, a zero setting transmission mechanism and a pendulum bob assembly, and the zero setting transmission mechanism is used for conducting zero setting on the pendulum bob assembly. According to the low-noise ultra-wideband seismometer, the observation frequency band range of the seismometer can be widened, and the self-noise level of the seismometer can be reduced.