161 results about "Ground vibrations" patented technology

The invention relates to an unmanned tractor operation path tracking and machine tool cooperative control system and method, and the system obtains the position and posture of a tractor, machine tool operation parameters and topographic information in real time through fusing the data of multi-source sensors, such as GNSS positioning and laser radar topographic perception. A multi-objective optimization function including a path tracking error, an operation precision error and a ground vibration excitation amount is constructed, and a particle swarm-genetic algorithm (PSO-GA) hybrid optimization algorithm is introduced for result optimization, so that cooperative control of tractor unit operation parameters such as a steering angle, a vehicle speed and a machine tool hydraulic parameter is realized. According to the method, in the operation of the unmanned tractor in the hilly terrain, the path tracking error is effectively reduced, the operation uniformity is improved, the influence of terrain factors on the operation is reduced, and the operation efficiency and the equipment durability under complex working conditions are remarkably improved.

The invention relates to the technical field of geological surveying and mapping, and discloses urban three-dimensional geological surveying and mapping equipment which comprises a placement table, three supporting legs are rotatably connected to the inner wall of the placement table, air pressure sleeves are arranged at the bottoms of the three supporting legs, and fixing rings are fixedly connected to the inner walls of the air pressure sleeves. An operator supports the surveying instrument through the supporting assembly, then rotates the air pressure sleeve to enable the air pressure sleeve to be perpendicular to the ground, finally places the extrusion assembly to descend, enables the piston rod to make contact with the ground, enables the piston rod to extrude air in the air pressure sleeve and enables the air pressure to be increased, and generated ground vibration can be transmitted to the piston rod when the surveying instrument conducts surveying around a large number of vehicles. Kinetic energy is absorbed and vibration is relieved through compressibility of high-pressure gas at the top of the piston rod, so that vibration borne by the surveying instrument is reduced, and frequent vibration of the surveying instrument and influence on surveying and mapping accuracy when the surveying instrument is used for surveying and mapping in an area with many running vehicles are effectively prevented.

The invention discloses a blasting vibration monitoring method and system based on vision and vibration sensors, and relates to the technical field of blasting vibration monitoring. An aerial vision monitoring device is arranged at a set height right above a blasting point, and a vibration sensor array is radially arranged around the blasting point; and the visual monitoring device and the vibration sensor array are in wireless communication connection with the blasting vibration analysis module based on the computer. Omnibearing monitoring of the blasting process is achieved by combining the aerial vision monitoring device and the ground vibration sensor array, ground vibration data can be captured, and the scattering condition of fragments generated by explosion can be observed. An image feature recognition algorithm is used for analyzing an image captured by a high-speed camera, and visual evidence is provided for understanding the explosion effect. Complex vibration data and visual feature changes can be converted into charts and schematic diagrams which are easy to understand through image processing software and a data visualization tool, and non-professionals can conveniently and rapidly grasp key information.

The invention relates to the technical field of rail transit, and discloses a rail transit tunnel surface environment vibration assessment method, system and device and a medium. The method comprises the following steps: constructing a vehicle-rail-fastener dynamic model; calculating a fastener acting force frequency spectrum according to the vehicle-track-fastener dynamic model; constructing a 2.5 D finite element-basic solution solving model of tunnel-surrounding rock; solving the tunnel-surrounding rock 2.5 D finite element-basic solution solving model to obtain basic solution equivalent vibration source intensity; and calculating earth surface vibration according to the fastener acting force frequency spectrum, the basic solution equivalent vibration source intensity and the field layered soil body power transfer matrix model. According to the method, track vibration, tunnel vibration and site vibration are decoupled, the calculation method with the highest calculation efficiency is adopted in each subsystem, the advantages of each modeling method are fully combined, the calculation efficiency is extremely high, the obtained result is more accurate, the cost is low, and therefore the track traffic tunnel surface environment vibration condition is rapidly and accurately evaluated.

The application relates to the technical field of ring network boxes, and discloses a primary and secondary fusion ring network box which comprises a box body and a box door, the box door is rotationally connected to the box body, a plurality of supporting strips are arranged on the box body, supporting rods are rotationally connected to the supporting strips, rotating wheels are fixedly connected to the supporting rods, and a fixing structure is arranged on the box body and used for fixing the box body. The rotating wheels are fixedly connected to the supporting rods, the rotating wheels can drive the box body to rotate, the box body can be dismounted from the cabinet by a worker, the ring network box can be taken out from the cabinet, and the ring network box can be maintained and processed. Meanwhile, the fixing structure fixes the box body, the box body is not prone to sliding in the cabinet, and the situation that the box body shakes due to ground vibration is reduced.

To provide an evaluation support device and an evaluation support method for supporting confirmation of the condition of the hard ground where piles are to be installed.SOLUTION: A management device 20 that supports confirmation of the hard ground includes a measurement information storage unit 22 that stores measurement values of the frequency of ground vibration in association with measurement positions of ground vibration, and a control unit 21 connected to a display device. The control unit 21 calculates a frequency distribution of a spectral ratio obtained by dividing the spectrum of a horizontal component by the spectrum of a vertical component from the measurement values recorded in the measurement information storage unit 22, and converts the frequency of the frequency distribution into depth. The control unit 21 outputs to the display device a map that displays depth distribution information for the measurement positions, with the display format changed according to the spectral ratio.SELECTED DRAWING: Figure 1

The invention provides a mechanical arm control system and method, and relates to the technical field of mechanical arms, and the system comprises a motion parameter module which is used for obtaining motion parameters of a mechanical arm; the spraying parameter module is used for acquiring spraying parameters of the nozzle; the environment data module is used for acquiring working environment data; the precision control module is used for determining precision control discrimination parameters according to the ground vibration data; the thickness control module is used for determining spraying layer thickness control judgment parameters according to the spraying parameters, the wind power data, the temperature data, the humidity data and the motion parameters; the motion control module is used for determining motion control discrimination parameters according to the motion parameters; and the control scheme module is used for generating a control scheme according to the precision control discrimination parameter, the spraying layer thickness control discrimination parameter and the motion control discrimination parameter. According to the invention, the timeliness and accuracy of manipulator control can be improved.

The invention relates to the field of signal identification, in particular to a debris flow ground vibration signal identification method and system, and the system comprises a precipitation monitoring module which is used for automatically sending early warning information when the daily precipitation reaches a precipitation threshold value, and a signal processing module which is used for collecting and preprocessing ground vibration signals corresponding to monitoring stations, the disaster early warning module is used for learning the ground vibration pre-data to generate a corresponding probability prediction map and issuing a cooperative instruction when a probability value is greater than a probability threshold value, and the cooperative identification module is used for capturing a secondary vibration signal of a monitoring station and judging whether the secondary vibration signal is abnormal or not according to a frequency threshold value. The debris flow early warning and protection method adopts corresponding protection measures, combines machine learning, recognizes the possibility of debris flow occurrence in advance, and automatically adopts protection measures such as road blocking, thereby reducing disaster loss, realizing early warning and protection of debris flow, and ensuring personnel and property safety.

The invention provides an anti-impact six-degree-of-freedom quasi-zero stiffness vibration isolation platform which comprises a first-stage vibration isolation layer and a second-stage vibration isolation layer and is characterized in that the first-stage vibration isolation layer is composed of four self-adaptive quasi-zero stiffness vibration isolation systems and used for supporting a panel and isolating vibration from equipment or the ground; the second-stage vibration isolation layer is composed of four active vibration isolation systems and used for further attenuating residual vibration and restraining internal motion disturbance of equipment. According to the quasi-zero-stiffness vibration isolator, the core problem that a traditional quasi-zero-stiffness vibration isolator cannot adapt to dynamic load changes and the anti-impact requirement is solved, a high-reliability and ultra-quiet environment is provided for high-end precision manufacturing, six-degree-of-freedom vibration control can be achieved, a vibration isolation belt is wider, vibration isolation of a 0.1-500 Hz vibration source can be achieved, the bearing capacity is large, the 20000 kg bearing requirement can be met, and the quasi-zero-stiffness vibration isolator is suitable for large-scale popularization and application. The device can adapt to precise instruments of different models, and is wide in application range and high in universality.

This invention relates to the field of water conservancy engineering construction technology, and discloses a method and system for controlling blasting vibration during lock excavation. By collecting information on the geological hardness of rock strata and the distance to surrounding buildings, and combining this with finite element analysis to simulate the blasting energy distribution, a dynamic matching mechanism for borehole depth and charge quantity is constructed. This method overcomes the limitations of traditional empirical parameter settings and uses iterative simulation and optimization algorithms to achieve coordinated adjustment of borehole depth and charge quantity. For example, in areas with high rock hardness, by increasing the borehole depth and matching a segmented charge strategy, the blasting energy is uniformly released in the deep rock mass, effectively reducing the peak ground vibration and avoiding structural damage to adjacent buildings. Furthermore, by introducing multi-dimensional data analysis and multi-scenario simulation verification mechanisms, it can flexibly cope with complex working conditions such as uneven rock hardness, topographical undulations, adjacent water bodies, or dense building clusters.

The application discloses a spraying robot laser radar inertia tight coupling positioning method based on IMU vibration spectrum sensing, comprising the following steps: 1) collecting IMU original data and preprocessing, and constructing a multi-dimensional standardized ground vibration fingerprint; 2) receiving the output multi-dimensional standardized ground vibration fingerprint, and realizing integrated decision of ground state sensing and positioning risk assessment; 3) according to the output decision triple, dynamically matching a pre-established multi-dimensional mapping library of “ground type-vibration interference level-treatment strategy”; 4) fusing the output point cloud without vibration noise and distortion and IMU pre-integration data, realizing adaptive tight coupling state optimization, and outputting pose estimation residual error; 5) based on the output pose estimation residual error, evaluating the mismatch degree of the current positioning system parameters and the environment, and realizing full-link closed-loop adaptive optimization. The application realizes integrated decision of ground type identification and positioning risk, and solves the problem that ground sensing and positioning decision are disconnected.

The application provides a kind of aircraft servo elastic dynamics model correction method considering operating surface gap, first aircraft structure is divided into substructure, and the aircraft dynamics model containing aileron gap nonlinearity is established according to substructure branch modal;And additional inertia force caused by aircraft operating aileron deflection is introduced in dynamics model, and the aircraft open-loop servo elastic motion equation containing aileron gap nonlinearity under independent generalized coordinate is obtained;According to sensor output equation, rudder transfer function and flight control system equation, the aircraft nonlinear servo elastic closed-loop system model containing aileron gap nonlinearity is established, and the model is corrected based on ground vibration test, rudder frequency response test and gap measurement test result, and the stability of the model is judged based on simulation analysis result and open-loop frequency response test result and is further corrected, which improves the accuracy of gap nonlinearity aircraft aerodynamic servo elastic characteristic evaluation, and is helpful to guide aircraft servo elastic ground test engineering practice.

The application provides a whole vehicle railway folding conveying belt anti-intrusion control method and system, three-axis acceleration information of the folding conveying belt in the transportation process is collected; the intrusion weight corresponding to each axis in the three-axis acceleration information is determined based on the anti-intrusion direction, and the peak value feature of the three-axis acceleration information is extracted based on the intrusion weight corresponding to each axis, to obtain the transportation intrusion feature of the folding conveying belt; the transportation deviation trend of the three-axis acceleration information is extracted based on the transportation weight corresponding to each axis, to obtain the transportation deviation trend of the folding conveying belt; the railway ground vibration signal is obtained, the folding conveying belt is judged based on the transportation deviation trend and the transportation intrusion feature, and the anti-intrusion result is sent to the conveying belt control center, the anti-intrusion judgment can be made based on the deviation trend and the intrusion feature in the conveying belt transportation, and the active anti-intrusion in the transportation process is realized.

The invention relates to the technical field of ground vibration prevention, and discloses a steel plate and base combined micro-vibration prevention base which is of an up-down composite laminated structure and comprises a stainless steel panel layer and a concrete base layer from top to bottom. The stainless steel panel layer and the concrete base layer are rigidly connected through an anchoring system pre-buried in concrete to form an integral stress unit; and the upper surface of the stainless steel panel layer is constructed into an integrated composite functional surface comprising a plurality of mounting planes with different heights. The stainless steel panel is used for replacing a traditional epoxy self-leveling coating to serve as an equipment installation face, stainless steel materials are high in inherent rigidity and good in toughness, intrinsic brittleness of epoxy materials is avoided, and the risk of brittle cracking of the surface due to loads or temperature difference or impact is fundamentally eliminated.

This invention provides a vibration-damping and noise-reducing track structure for RGV (Remotely Resistant Vehicle). The RGV vibration-damping and noise-reducing track structure includes: a vibration-damping base; two tracks, which are mounted on top of the vibration-damping base via multiple sets of fixing brackets. Each set of fixing brackets has fixing bolts installed on its top. The vibration-damping base includes a support structure, a vibration-damping structure, and a wear-resistant structure. The wear-resistant structure is installed between the support structure and the wear-resistant structure, and the vibration-damping structure is a rubber damping pad; filling openings are located at both ends of the tracks, and the interior of the filling openings is filled with a filling structure, which is made of foam plastic. Each track has a sliding opening on its top. The vibration-damping and noise-reducing track structure for RGV provided by this invention can effectively isolate vibration transmission between the track and the foundation, reducing ground vibration and noise propagation, reducing ground vibration amplitude by 30%-40%. Simultaneously, the filling structure can absorb noise, improving the noise reduction effect.

The invention belongs to the technical field of electrical equipment shock prevention, and discloses a multifunctional control cabinet which comprises a cabinet body. An intelligent display component; an anti-vibration assembly; a heat dissipation assembly; an intelligent control assembly and a recovery assembly. By installing the recovery assembly, when the equipment encounters ground vibration, a frame can move on the top plane of a rectangular plate, four U-shaped telescopic rods can swing and stretch out and draw back along with the frame, after the U-shaped telescopic rods touch rubber blocks connected through third springs in long grooves, the stroke of the third springs can be compressed, then recovery is conducted, and the operation is repeated, so that the equipment is recovered. After vibration is finished, two motors are started to drive scattered clockwork springs to be gradually tightened, the frame is pulled to the center of the top of the rectangular plate again through the telescopic and hinging effects of two sets of second telescopic rods, and the problem that after traditional damping equipment works, vibration force on a plane is reduced is solved. And the whole power distribution control cabinet cannot be restored to the original position, so that the problems of cabinet body extrusion, grounding failure and the like can be caused.

The invention relates to the technical field of seven-stringed plucked instrument auxiliary devices, in particular to a novel seven-stringed plucked instrument base which comprises a base plate, brass foot assemblies are fixedly installed at the four corners of the bottom of the base plate, a plucked instrument body base is placed at the top of the base plate, each brass foot assembly comprises an installation sleeve, and a supporting base is installed at the bottom of each installation sleeve in a threaded mode. A connecting base is installed at the bottom of the supporting base in a threaded mode, a vibration isolation pad is embedded in the bottom of the connecting base, and an inner cavity of the bottom of the installation sleeve is provided with an inner thread. According to the supporting structure of the high-purity brass foot, on one hand, vibration coupling with the guqin is avoided through stable own frequency, on the other hand, the contact area between the guqin body base and the ground is reduced, transmission of ground vibration to the base is reduced, external interference is further reduced, and meanwhile the brass foot meeting the vibration isolation requirement can be selected in different ground scenes; ground vibration is prevented from reversely interfering with Guqin vibration, and the application scene of the base is further widened.

The utility model belongs to the technical field of hydraulic engineering plant structure vibration monitoring, and particularly provides a hydraulic engineering plant structure movable vibration measuring device which comprises a carrying vehicle body, a rotary vibration isolation mechanism is arranged on the carrying vehicle body, a support is arranged on the rotary vibration isolation mechanism, and a laser Doppler scanning vibration measuring instrument is installed on the support. The rotary vibration isolation mechanism comprises a lower shell and an upper shell, an elastic supporting body is arranged between the lower shell and the upper shell, a rotary motor is arranged on the upper shell, the output end of the rotary motor is connected with a rotary platform, and the rotary platform is connected with the support. According to the device, comprehensive coverage of plant structure vibration monitoring is realized, and interference of ground vibration noise on vibration measurement can be reduced.

This invention belongs to the field of structural dynamics testing and modal analysis technology, and provides a physical / mathematical integrated experimental modal analysis method, system, equipment, and medium. The method includes: applying preliminary excitation and using the phase separation method to obtain preliminary modal parameters containing mode shapes; constructing a mode shape matrix based on the mode shapes and optimizing the position and number of exciters to ensure that the modal participation values ​​of all modes of interest are not lower than a preset threshold; performing refined excitation according to the optimized scheme, locking the resonance state using the phase resonance method, and obtaining the final modal parameters. This invention effectively solves the problems of blind excitation point placement, modal confusion, and mode omission by coordinating three stages: phase separation initial screening, mode shape-driven excitation optimization, and phase resonance fine measurement. It significantly improves the integrity, accuracy, and efficiency of modal testing of large structures and reduces experimental safety risks. It is applicable to ground vibration tests of complex structures such as aircraft, spacecraft, and bridges.

The invention discloses a vibration drift removal and compensation method for atom interference measurement, which sequentially comprises the following steps of: carrying out atom interference continuous measurement, acquiring a voltage signal by an accelerometer, enabling the voltage signal to pass through a band-pass filter circuit, acquiring the voltage signal by a main control system, converting the voltage signal into an acceleration signal, and converting the acceleration signal into a vibration phase. The acceleration signal average value is converted into a vibration phase, vibration phase linear fitting, interference measurement period vibration phase drift removal and interference fringe fitting are carried out to obtain an interference phase, and the interference phase calculates a measured physical quantity; according to the method, data processing such as filtering, smoothing, linear fitting and deduction is carried out on signals collected by the accelerometer, suppression of time drift and temperature drift existing in relative acceleration measurement of the accelerometer is achieved, and measurement noise introduced by ground vibration is greatly reduced.

The present application belongs to the field of rail transit station safety protection technology, and particularly relates to a station access security check device and system for rail transit safety, which is composed of a sensing unit, a processing unit, an execution unit and an interlocking unit connected in sequence, characterized in that the sensing unit comprises a first sensing mechanism and a second sensing mechanism, the processing unit comprises a signal demodulation mechanism, a first processing circuit, a second processing circuit and a third processing circuit, the execution unit comprises a first execution mechanism, a second execution mechanism and a third execution mechanism, and the interlocking unit is an interlocking interface mechanism; the beneficial effects are that the ground vibration detection and the boundary vibration detection are integrated, circuitized signal processing and logic judgment are adopted, and a hierarchical execution and wiring interlocking structure is constructed, so that the whole-area dead-angle-free perception, fast signal discrimination and risk linkage control of the security check area are realized.

The invention provides a cold atom gravimeter active vibration isolation method based on slow interference compensation, and relates to the technical field of cold atom gravimeter active vibration isolation, and the method comprises the following steps: building a cold atom gravimeter active vibration isolation model; designing a slow interference compensation law; a Lyapunov stability function is designed; according to the cold atom gravimeter active vibration isolation method based on slow interference compensation, a compensation proportional integral differential control law is designed, and the problem that a current control method cannot adapt to vibration environment change requirements due to the fact that the problem that ground vibration and random vibration caused by the natural environment are not considered is solved. Therefore, the vibration speed and the vibration displacement of the active vibration isolation system of the cold atom gravimeter are rapidly converged, and the control precision of the active vibration isolation system of the cold atom gravimeter is further improved.

The invention relates to the technical field of vibration resistance and shock absorption, and discloses a double-strong-electromagnetism vibration-resistant guide rail which comprises a first resuspension device, an electromagnetic guide rail base, a second resuspension device and a carrying module. The inner enveloping electromagnetic plate of the first re-suspension device suspends under the electromagnetic action of the outer enveloping electromagnetic plate; the inner enveloping electromagnetic plate is fixedly connected with the electromagnetic guide rail base; second resuspension devices are fixedly arranged in limiting grooves in the two sides of the electromagnetic guide rail base, and the permanent magnet plate of the carrying module is arranged above the second resuspension devices. A dual electromagnetic quakeproof system is adopted and comprises the first resuspension device and the second resuspension device which enable the electromagnetic guide rail base and the carrying module to suspend correspondingly, and therefore ground vibration and operation vibration borne by the guide rail are reduced; the influence of the object temperature on the track groove is calculated through light deflection, the temperature is corrected through the liquid cooling disc, the deformation degree of the track is guaranteed, and the high-precision effect is further achieved.

The full-aircraft ground vibration test method based on virtual-real fusion is suitable for the detection of the overall vibration performance of an aircraft, and comprises the following steps: determining an optimal initial excitation force which is determined by inputting a plurality of virtual results into an excitation vibration force vector model, the virtual result is determined according to a test model established by the test aircraft; and synchronously performing a virtual test and a real physical test on the basis of the optimal initial excitation force, obtaining a structural frequency spectrum and a result model of the real physical test, determining initial modals of each order of the aircraft according to the structural frequency spectrum, optimizing or correcting a dynamic simulation model through the initial modals of each order, and obtaining a dynamic simulation result of the aircraft. According to the method, a real dynamic simulation model is determined, the real dynamic simulation model is optimized or corrected according to a result model to obtain a final dynamic simulation model, and the final dynamic simulation model is stored, so that the test efficiency is improved.

The invention discloses a super-static and super-stable vacuum experimental device for simulating a space environment. The experimental device is provided with a temperature environment control system, a vacuum cabin system and a vibration isolation system, the temperature environment control system is arranged on the outermost layer of the vacuum test device and surrounds the vacuum cabin system and the vibration isolation system, the overall temperature can be controlled to be 15-25 DEG C, the temperature control stability is + / -0.1 DEG C, and the super-stable environment temperature of space is simulated. The vacuum cabin system comprises an objective table, the objective table is arranged on an active vibration isolator and a passive vibration isolation layer which can restrain low and medium frequency vibration and high frequency vibration and are connected in series, the objective table is directly connected with the passive vibration isolation layer, and the active vibration isolator and the passive vibration isolation layer which are connected in series are used for effectively isolating the influence of ground vibration. And the ultra-quiet space environment is simulated. The problem that low-frequency vibration is difficult to restrain in a traditional method is solved, and the problem that high temperature control stability is difficult to achieve in a traditional vibration isolation system is solved.

The present invention provides a train speed calculation method, device, equipment and readable storage medium. The method includes obtaining first information, second information and third information. The first information is the instantaneous speed of a first train when passing through the current bridge pier. The second information is the ground vibration speed corresponding to the instantaneous speed at a first position. The third information is the ground vibration speed corresponding to the instantaneous speed at a second position. Both the first position and the second position are set on the connection line between the bridge pier and the target. The shortest distance between the first position and the bridge pier is a preset distance, and the second position is set between the first position and the target. A vibration speed attenuation model is established according to the first information, the second information and the third information. The vibration speed attenuation model is used to calculate the ground vibration speed corresponding to the conduction of the instantaneous speed to the target. According to the vibration speed threshold and the vibration speed attenuation model, the maximum instantaneous vehicle speed of a second train passing through the bridge pier is obtained. The present invention can quickly obtain the maximum vehicle speed allowed when the train passes through the target through the vibration speed attenuation model.

The embodiment of the invention discloses a construction displacement monitoring method and device applied to a high-altitude cantilever component. A specific embodiment of the method comprises the following steps: acquiring a real-time image group in response to a real-time vibration signal representing that ground vibration is greater than preset vibration intensity or an image acquisition time point is reached; performing mark plate identification on each real-time image in the real-time image group to obtain a mark plate information set; in response to the fact that at least a target number of marking plate information meeting the screening condition exists in the marking plate information set, a component movement amount set is determined; in response to the existence of the camera offset, performing offset compensation on the component movement amount in the component movement amount group according to the camera offset amount; and in response to the compensated component movement amount greater than the early warning threshold value in the compensated component movement amount group, initiating component displacement early warning. According to the embodiment, automatic and effective displacement monitoring of the high-altitude cantilever component is realized.

Embodiments of the present disclosure disclose a construction displacement monitoring method and device applied to a high-altitude overhanging component. A specific embodiment of the method comprises: in response to a real-time vibration signal representing that ground vibration is greater than a preset vibration intensity or reaching an image acquisition time point, acquiring a real-time image group; performing marker plate identification on each real-time image in the real-time image group to obtain a marker plate information set; in response to there being at least a target number of marker plate information in the marker plate information set that satisfies a screening condition, determining a component movement amount group; in response to there being camera offset, performing offset compensation on the component movement amount in the component movement amount group according to the camera offset amount; and in response to there being a compensated component movement amount greater than a warning threshold in the compensated component movement amount group, initiating component displacement warning. This embodiment realizes automatic and effective displacement monitoring of a high-altitude overhanging component.

The invention provides an environmental noise evaluation method based on continuously acquired vibration records. The environmental noise evaluation method based on continuously acquired vibration records comprises the following steps: step 1, continuously acquiring ground vibration records X (t); step 2, carrying out segmented vibration data segmentation and recording synthesis; step 3, calculating time-varying root-mean-square amplitude RMS (j) and dominant frequency F (j) for the time-phased vibration records; 4, performing normal distribution screening on the root mean square amplitude RMS (j) and the dominant frequency F (j); 5, drawing a time-varying amplitude RMS (j) and dominant frequency F (j) curve; and step 6, carrying out environmental noise time-varying rule and interference level evaluation. According to the environmental noise evaluation method based on the continuous acquisition vibration records, evaluation on the influence time-varying rule and the interference level of environmental noise of a certain surface type is effectively realized, and a basis is provided for improving the seismic data energy and the signal-to-noise ratio of the surface type, so that the seismic acquisition data quality is improved.

The utility model discloses an underground grounding resistance on-line monitoring device, which relates to the field of resistance detection equipment and comprises a resistance monitor, and a pair of support frame bodies capable of sliding along opposite directions are arranged below a shell of the resistance monitor. The two pairs of supporting frame bodies each comprise a horizontally-distributed movable plate, inclined extending plates facing the opposite directions and a supporting plate fixed to the bottom ends of the inclined extending plates. According to the utility model, the supporting frame body is arranged, and the supporting frame body can extend out of the lower part of the shell of the resistance monitor to provide stable support for the resistance monitor, so that the adverse effects of ground dirt and ground vibration on the resistance monitor during the operation of large-scale construction machinery are reduced. Meanwhile, the resistance monitor is further provided with the grounding plate with the angle capable of being adjusted in a rotating mode, the grounding plate can avoid a protruding part on the ground when covering the uneven ground, the skewing phenomenon when the supporting frame body makes contact with the ground is effectively avoided, and the stability of the resistance monitor in the working environment with the uneven terrain is improved.