52results about How to "High Acquisition Accuracy" patented technology

This invention discloses a brain-computer interface (BCI) smart zoom glasses and a visual adaptive adjustment system, relating to the field of smart glasses technology. It includes an EEG signal acquisition module that attaches to the user's head to collect signals, extracts feature vectors after noise reduction, and transmits them to a core control module; a visual environment perception module that collects target and environmental data, generates structured data packets, and transmits them synchronously; a core control module that integrates multi-source data, identifies visual intent, and decides on adjustment parameters; a smart zoom execution module that adjusts the lens focal length and provides closed-loop feedback to calibrate accuracy; a visual adaptive adjustment module that adjusts lens parameters based on the environment and fatigue state; a human-computer interaction module that supports manual operation, status display, and vibration feedback; and a data storage and update module that stores data and iteratively optimizes the model. This invention achieves accurate visual intent recognition through brain-computer interaction; personalized modeling adapts to different user needs, meeting the product development and application requirements of the wearable smart device manufacturing field.

This invention provides a method and system for constructing a 3D model of a construction site by combining multiple data sources. It relates to the field of data processing technology. The method includes: retrieving satellite imagery at a preset resolution to obtain a full-area stereo image pair dataset; performing radiometric correction to generate a regional surface model and a regional elevation model; performing raster-level modeling defect detection to locate distributed blind zone blocks; fitting obstacle avoidance paths to generate optimized obstacle avoidance flight trajectories; driving a UAV to perform multi-angle surround scanning to directionally collect dense point clouds in the distributed blind zones; constructing a distributed blind zone model; and performing microscopic overlay to output a 3D model of the construction site. This invention solves the technical problems of existing construction site modeling methods, which have limitations in coverage, modeling efficiency, and data real-time performance, and rely on a single data source, failing to provide a comprehensive and accurate 3D model of the construction site, thus affecting construction progress and decision-making.

The utility model belongs to the technical field of voltage transformers, and particularly relates to an outdoor 20-kilovolt lightweight voltage transformer. The transformer comprises a rectangular iron core on which a primary coil and a secondary coil are wound; a cast aluminum junction box is arranged on the side surface of the totally-closed shell; a stainless steel waterproof joint is arranged on one side of the totally-closed shell; a steel wire type lead sealing rope is fixedly arranged outside the cast aluminum junction box for locking; the primary coil is connected with an A-phase connecting line; the A-item connecting line is connected with an M10 primary bolt; the N-phase connecting line is connected to the M8N terminal bolt, the secondary coil is connected with two secondary an connecting lines, the two secondary an connecting lines are connected to the M6 secondary terminal bolt, and the front grounding connecting line is connected to the M8 grounding bolt. The anti-theft door is light in weight, high in protection performance, easy to install, high in anti-theft performance, high in reliability and good in safety and economical efficiency.

The application provides a delay test system and method based on a Hall switch device, comprising: a magnetic field generation module containing a programmable current source and a coil to generate a precisely controlled magnetic field change; a temperature control module integrating a temperature sensor and a heating / cooling device to realize constant temperature or temperature scanning test; a signal acquisition module using a high-frequency sampling device to collect Hall device output signals; a data processing module using an embedded processor to realize automatic threshold detection and delay calculation; a general test interface using a test seat with replaceable probes to adapt to different packaged devices; a digital communication interface using an SPI or I2C interface to output test results; in the application, the main structures include a magnetic field generation module, a temperature control module, a signal acquisition module, a data processing module, a general test interface, a digital communication interface and a threshold calibration module, and these modules cooperate with each other to provide a solid foundation for precisely testing the delay characteristics of the Hall switch device.

This application belongs to the field of geological logging technology, specifically disclosing an automated logging device, including a circulating transport mechanism, a feeding mechanism, a vibration mechanism, a drilling fluid recovery mechanism, a cuttings cleaning mechanism, an imaging analysis mechanism, a drying and storage mechanism, and a screen cleaning mechanism. The circulating transport mechanism includes multiple screens arranged in sequence, which circulate along a closed path to perform the following operations: the feeding mechanism injects material into the screens; the drilling fluid recovery mechanism recovers drilling fluid from the material in the screens; the cuttings cleaning mechanism cleans the material in the screens to leave clean cuttings; the imaging analysis mechanism performs imaging analysis on the clean cuttings in the screens; the drying and storage mechanism receives, dries, and stores the clean cuttings in the screens; and the screen cleaning mechanism cleans the screens. The vibration mechanism applies a vibration force to the screens at the drilling fluid recovery mechanism and the cuttings cleaning mechanism. The automated logging device of this application can continuously process drilling materials in batches.

The invention is suitable for the technical field of laser additive manufacturing, and provides a laser additive multi-mode monitoring device which comprises a first mounting plate assembly, a second mounting plate assembly, a powder bed monitoring module, an OT camera monitoring module, a structured light camera module, an infrared monitoring module, a printing substrate and a supporting shell. The supporting shell is of an external bearing structure, and the first mounting plate assembly and the second mounting plate assembly are transversely arranged along preset mounting positions on the top of the supporting shell and are fixedly connected with the supporting shell through detachable fixing pieces. According to the method, multi-modal data is fully covered, and a complete process data link is constructed; acquisition precision and stability are obviously improved, and requirements of severe working conditions are met. And the process optimization of data closed-loop driving is realized, and the forming quality and the large-scale production capacity are improved.

This invention relates to a gear welding device and method for a press, belonging to the field of press manufacturing. The technical solution is as follows: A gear welding device for a press includes a work platform with a ground rail. A transfer trolley is movably mounted on the ground rail to carry the gear to be welded. Positioners are mounted on both sides of the ground rail, each equipped with a rotatable gripper. A gantry frame is also mounted on the work platform, spanning the ground rail. A welding robot is movably mounted on the gantry frame, its movement direction being horizontal and perpendicular to the ground rail. The welding robot is equipped with a machine vision module. This solution, through the positioner grippers, can precisely achieve 180° rotation of the gear, providing a stable posture adjustment basis for double-sided welding. The welding robot, combined with the machine vision module, enables automated and high-precision acquisition of weld information, providing data support for intelligent welding path planning.

The invention belongs to the technical field of thermally-induced positioning error compensation, and discloses a C-A-L-A algorithm-based real-time compensation method and system for thermally-induced positioning errors of a full-closed-loop feeding system, and the method comprises the steps: obtaining the real-time temperature of a heat source of the full-closed-loop feeding system; the full-closed-loop feeding system comprises a motor, a front / rear bearing pack, a lead screw nut pair and a guide rail sliding block pair, the real-time temperature is input into a thermally-induced positioning error model to obtain a thermal error, and the thermally-induced positioning error model comprises a convolutional neural network module, a long-short term memory network module and a mixed attention mechanism module; and the thermal error is input into a numerical control system, and the thermal-induced positioning error of the full-closed-loop feeding system is compensated in real time by shifting the mechanical coordinate origin through the EMZPS, so that the influence of the thermal-induced positioning error of the full-closed-loop feeding system on precision machining is inhibited, and the machining precision of a precision machine tool is improved.

The utility model relates to tunnel construction technical field, concretely is a kind of tunnel deformation fast detection device, including support, multiple measuring instrument and acquisition card;Every two the measuring instrument is a group installed on support, and every group of measuring instrument is oppositely arranged, and its measuring direction is the opposite direction of same straight line;The measuring instrument is all connected with acquisition card electrically;The shell that the measuring instrument and acquisition card cover are arranged in on the support;The tunnel deformation fast detection device, support provides installation and connection function, and it is convenient for measuring instrument to carry out the installation and operation of multiple scene, and multiple group measuring instrument can quickly carry out data acquisition to two directions of same straight line, improve data acquisition accuracy and acquisition efficiency;Shell can measure the protection measuring instrument in operation process, improve equipment use safety;With acquisition card, realize the data unified transmission of multiple measuring instruments in detection process, improve the accuracy of data measurement;Overall improve the efficiency of tunnel deformation measurement work.

The application discloses a kind of high-precision explosion-proof touch glass of integrated differential mutual capacitance collection circuit, it relates to the technical field of industrial explosion-proof touch and high-precision signal acquisition, the touch glass is sequentially stacked by multiple functional layers, high-precision high-sensitivity touch collection circuit is integrated below touch layer, edge is set with electromagnetic shielding structure, collection circuit uses differential signal acquisition, high-precision amplification filtering and intrinsic safety type control and power supply design, touch layer uses nanowire composite grid structure, the application is coupled with the matching design of structure and circuit, can actively compensate the signal attenuation caused by explosion-proof structure, while strictly meet the intrinsic safety explosion-proof requirement, preparation method includes tempering, laminated composite, circuit integration, encapsulation solidification and comprehensive performance detection etc.Step.The product of the application has high touch precision, strong anti-interference, good environmental adaptability, and is suitable for man-machine interaction equipment in explosive hazardous environment such as coal mine, chemical industry etc..

The application discloses a kind of based on thing networking's wisdom building energy consumption management and equipment monitoring system, belong to building intelligent management technical field.System uses layered distributed architecture, is composed of perception layer, network transmission layer, edge computing layer, platform application layer, terminal control layer;Perception layer realizes energy consumption, equipment, environmental global data acquisition, network transmission layer uses wired wireless dual-mode communication to guarantee data transmission, edge computing layer realizes local instant processing and emergency control, platform application layer realizes cloud big data analysis, visual management, intelligent strategy generation, terminal control layer realizes equipment automation regulation and control.The application overcomes the defects of traditional building management energy consumption waste, operation inefficiency, data isolation, insufficient intelligence, can realize building energy consumption accurate measurement, dynamic analysis, intelligent regulation and control, equipment full period monitoring, fault early warning, automation operation, effectively reduce building energy consumption, reduce operation cost, improve operation safety, applicable to various office buildings, shopping malls, communities, parks and other buildings, with excellent novelty, creativity and practicality, meet the development needs of green low-carbon building.

This application provides a method, apparatus, device, and computer-readable storage medium for determining the extension length of an observation line in seismic exploration. The method includes: acquiring layer information of a target layer; the layer information including depth, velocity, maximum dip angle, and the dominant frequency of the target layer's location; determining the offset aperture for the target layer to meet the first Fresnel zone requirement based on the velocity and the dominant frequency; determining the offset aperture for the target layer to meet the 30-degree diffraction repositioning requirement based on the depth; determining the offset aperture for the target layer to meet the stratigraphic dip angle requirement based on the depth and the maximum dip angle; and determining the extension length of the observation line based on each offset aperture. The observation line extension length determined by this method can meet the offset repositioning imaging requirements of all reflection points, improving the acquisition accuracy of the observation system.

The invention provides a processing core state adjustment method and device, equipment and a medium, and the method comprises the steps: recognizing whether a processing core of a processor has a core state adjustment demand or not according to the operation state parameter of the processor; and determining a to-be-adjusted target processing core and a target adjustment state which the target processing core needs to reach in response to identifying that the processor has the core state adjustment requirement of the processing core, and performing state adjustment on the target processing core. The data range used when the target processing core and the target adjusting state are determined is expanded, the obtaining precision and accuracy of the target processing core and the target adjusting state are improved, then the state adjusting precision of the processing core is improved, the scene adaptability of the processing core state adjusting method is improved, and the user experience is improved. Under the scene of realizing the state adjustment of the processing core based on the hardware equipment, the response speed of the state adjustment of the processing core is improved, the software overhead is reduced, and the stability of system operation is improved.

This invention provides a cable partial discharge noise signal monitoring device, relating to the field of power equipment condition monitoring technology. It includes: a bottom housing with a set of bolt mounting holes on its side; a top housing mounted on the top of the bottom housing; a set of locking pins mounted on the sides of both the bottom and top housings; a support plate on the side of the top housing; an electric motor mounted on one side of the support plate; and a driven shaft mounted on one side of the top housing. A threaded rod cooperates with a self-locking clamping seat to achieve symmetrical clamping and self-locking of the cable, preventing cable displacement. The greater the tensile force of the cable, the more stable the clamping seat's grip on the cable. An inflatable airbag flexibly conforms to the cable, achieving centering and sealing, preventing dust from entering the cable monitoring area. The airbag also has a sound insulation effect, preventing external vibrations from affecting cable monitoring and avoiding damage to the insulation layer.

The utility model discloses an indoor air sampler, which relates to the technical field of air samplers and structurally comprises a base, pulleys are fixedly mounted at the bottom of the base, an electric telescopic rod is fixedly connected to the top of the base, a fixed plate is fixedly connected to the top end of the electric telescopic rod, and a rotating plate is arranged on the top side of the fixed plate. A water tank is fixedly connected to one side of the top of the rotating plate, a transition cylinder is fixedly connected to the other side of the top of the rotating plate, a collecting cylinder is fixedly connected to the top of the transition cylinder, a cleaning mechanism is arranged in the collecting cylinder, and a connecting pipe is connected to the top of the water tank. According to the indoor air sampler, residual materials in air collected last time can be removed, air collected next time is prevented from being polluted, the collection quality of the sampler is improved, air at different heights and positions can be collected, errors during collection are reduced, and the collection precision is improved.

The invention discloses a flood control channel flow monitoring method fused with a flow velocity area method, and belongs to the technical field of water conservancy flow monitoring. The method comprises the following steps: acquiring a water-passing section contour at a monitored section through a three-dimensional scanning technology, dispersing the water-passing section contour into n small units by adopting Delaunay triangulation, and recording areas and positions; acquiring distribution flow velocity data at the monitoring section through the two-dimensional flow velocity measurement matrix, and distributing the distribution flow velocity data to each small unit through an inverse distance weighted interpolation method; aggregating the small units into large units, calculating the total area and the average flow velocity of the large units, evaluating the flow velocity deviation by taking the area weighted flow velocity of all the small units as the reference flow velocity, identifying vortex regions based on the flow velocity deviation and counting the number of the vortex regions, and dynamically adjusting the flow velocity distribution coefficient according to the number of the vortex regions. And calculating the total flow of the flood control channel through partition integration. The accuracy and reliability of flow monitoring in the complex flow state are improved, and the actual flow state requirement of the flood control channel is met.

The invention discloses a greenhouse gas emission indoor culture device for simulating decomposition of lake litters, and belongs to the technical field of environmental science and ecological experiment devices. Comprising a culture tank, a litter fixing device, a closed air chamber, a three-phase sampling unit, a pressure balance module and a temperature control module, a sediment-water covering-air chamber three-layer structure is formed in the culture tank, and a lake water-mud interface and a water-air interface are accurately simulated; the litter fixing device is fixed on a water covering layer or a sediment layer and is adaptive to different types of litters; the three-phase sampling unit synchronously collects water-dissolved greenhouse gas in a gas chamber, a water body and a sediment gap; the pressure balance module ensures pressure stability of the closed space. The device solves the problems that an existing device cannot accurately simulate the lake microenvironment, gas collection is not comprehensive, and environment control is insufficient, has the advantages of being convenient to operate, high in collection precision and suitable for indoor batch experiments, and can be widely applied to lake litter decomposition and greenhouse gas emission research.

The invention relates to the technical field of quality prediction, in particular to a fermentation quality prediction management system for enzyme production based on data processing. The system comprises the following modules: an environmental parameter acquisition module, a microbial activity monitoring module, a fermentation state identification module and a prediction regulation and control module, wherein the environmental parameter acquisition module acquires environmental condition parameters in a fermentation tank in real time through a multi-parameter sensor array; an enzyme activity index and nutrition consumption rate data are obtained from the microbial activity monitoring module; the microbial activity monitoring module is used for judging a microbial behavior track, correcting track offset and identifying characteristics of each fermentation stage; and the prediction regulation and control module predicts the product quality, and optimizes fermentation process parameters according to the deviation between the prediction result and the target quality. According to the method, prospective control over the enzyme production quality is achieved, the intelligent level of the whole fermentation process is improved, and a flexible and efficient fermentation quality control mechanism is formed.

The invention relates to the technical field of radio frequency signal processing, and discloses an RFSoC-architecture C-band radio frequency direct acquisition and data storage system, which comprises a high-speed analog-to-digital conversion module, an on-chip programmable logic processing module, a dual-port block memory module, a DDR cache module and an upper computer data acquisition module. A C-band radio frequency signal is directly sampled through an ultra-high-speed ADC (analog-to-digital converter) in an RFSoC (radio frequency system-on-chip), is processed by a programmable logic module, is cached by a two-stage cache structure consisting of a BRAM (bidirectional random access memory) and a DDR (double data rate), and is transmitted to an upper computer through an Ethernet interface to realize real-time receiving, storage and analysis. According to the invention, direct acquisition of a C-band radio frequency signal is realized by adopting an ultra-high-speed time interleaving architecture ADC in an RFSoC, link interference and device noise of a traditional analog down-conversion technology are avoided, and a multi-channel compensation correction mechanism is matched, so that the digital signal acquisition precision is greatly improved; and meanwhile, the internal Tile-level high-speed interface is directly connected with the processing module, so that the loss of an external link is reduced, and the data continuity and stability at a high sampling rate are ensured.

The invention discloses an indoor and outdoor integrated inspection method based on an omni-directional mobile aerial robot. The method comprises the following steps: controlling the omni-directional mobile aerial robot to fly to a predetermined entrance of a target building along a preset outdoor navigation path; acquiring a predetermined entrance image and laser radar point cloud data, and determining a six-degree-of-freedom motion track passing through the entrance; generating a six-degree-of-freedom motion control instruction for obstacle avoidance control according to the real-time scanning data of the laser radar and the displacement track of the image feature point; determining attitude adjustment parameters of the aerial robot according to a matching result of the two-dimensional feature point set, the equipment three-dimensional structure feature library and the laser radar point cloud subset; and controlling the omni-directional mobile aerial robot to return to the outdoor starting point according to the task execution sequence, the path pose information and the return initial pose data, and uploading inspection data. According to the invention, high autonomy and comprehensive reliability of the inspection process are realized in a complex building environment, and the overall performance and the application range of the unmanned building inspection system are significantly improved.

The utility model discloses a cross-core jack convenient to observe tensile length, which comprises a jack main body, a tensioning end, a jacking end, a plurality of hoisting fixing plates and an observation mechanism, the tensioning end is arranged at the left end of the jack main body, the jacking end is arranged at the right end of the jack main body, and the plurality of hoisting fixing plates are arranged on the jack main body. The lifting fixing plates are oppositely arranged on the top of the jack body left and right, and the observation mechanism is arranged at the front end of the jack body. The observation mechanism comprises an observation box, a visual window, a plurality of scales, a partition plate, an upper strip groove, an upper strip opening, a lower strip groove, a lower strip opening, a plurality of limiting strips, a traction block, a fixing block, a plurality of buckling blocks and a block groove. According to the scheme, the data acquisition precision is greatly improved.

This invention discloses an IoT feeder terminal with wide-voltage adaptive capacitor power supply and high-precision synchronous sampling, belonging to the technical field of distribution network feeder automation FTU equipment. Addressing the pain points of existing 12kV pole-mounted feeder terminals relying on PT transformers and batteries for power supply, such as PT breakdown, high maintenance costs due to regular battery replacement; poor sampling accuracy and large fault location deviations caused by outdoor temperature differences and electromagnetic interference; high power consumption during long-term standby; narrow passive power supply voltage regulation range; and equipment failure due to voltage fluctuations, this invention integrates a multi-stage adjustable capacitor voltage divider passive voltage regulation circuit, a power frequency synchronous differential temperature drift compensation sampling unit, and a millisecond-level fault-triggered sleep / wake-up low-power control module. This invention achieves passive isolation voltage regulation and power supply within a wide voltage range of 10-12kV through multi-stage capacitor voltage division, eliminating the need for PT and backup batteries; it employs three-phase hardware synchronous sampling superimposed with software temperature drift and electromagnetic interference differential compensation algorithms, achieving sampling accuracy superior to national standards; under normal conditions, the entire unit operates in low-power sleep mode, retaining only the disturbance monitoring branch; and in the event of short circuits or grounding faults, it wakes up in milliseconds to record waveforms and upload fault information. This invention significantly reduces the workload of operation and maintenance of field tower terminals, provides accurate and reliable electrical quantity acquisition, has small fault location error and improves emergency repair efficiency, has ultra-low power consumption to adapt to remote unattended distribution network scenarios, and the standardized whole machine can directly replace the traditional FTU, with strong industrial adaptability.

This invention discloses a riser drilling internal detector, comprising a drill pipe connection assembly, an instrument compartment, a support rod, a variable diameter spring assembly, and a sensor array. The instrument compartment is located at the bottom of the drill pipe connection assembly, and the variable diameter spring assembly is located outside the instrument compartment. The sensor array is mounted on the variable diameter spring assembly. The variable diameter spring assembly can deform to change its diameter to adapt to changes in the inner diameter of the riser main pipe. The sensor array can closely adhere to the inner wall of the riser main pipe. This invention aims to achieve real-time and efficient detection of the inner wall of a 21-inch riser main pipe using drilling technology. This device adopts a bow-spring type adaptive variable diameter structure, combined with a 24-channel metal magnetic memory sensor array. The internal detector's diameter change range is 480-510 mm, enabling high-resolution scanning of defects such as inner wall corrosion, cracks, and stress concentration in a dynamic drilling environment. This overcomes the problems of complex structure, limited diameter change range, and low detection efficiency in existing technologies.

The utility model relates to the technical field of urban rail transit engineering vehicle equipment, in particular to an urban rail transit engineering vehicle air cylinder pressure acquisition plug-in which comprises a power supply part, a pressure signal sampling module, a pressure channel selection module, an AD conversion module, a signal isolation module, a main control module and a communication module. The power supply part is used for realizing various power supply conversion and protection functions and supplying power to other modules; the pressure signal sampling module is used for carrying out operational amplification processing on 0-5V voltage signals output by the voltage type pressure sensor; the pressure channel selection module is used for selecting five paths of pressure signals and pressure self-checking signals under the control of the CPU; the AD conversion module is used for converting the pressure signal into a digital signal; the signal isolation module is used for realizing isolation between a pressure signal and a main circuit; the stability of the air cylinder pressure acquisition data of the urban rail transit engineering vehicle can be improved.

The invention relates to a road target real-time detection and early warning system in a foggy environment. The system comprises a detection parameter determination module which is used for obtaining visibility parameters of a foggy environment and determining target detection parameters of sensing equipment based on the visibility parameters; the sensing equipment configuration module is used for configuring sensing equipment by adopting the target detection parameters and executing road target detection based on the configured sensing equipment to obtain a first target detection result; the target detection optimization module is used for performing detection optimization through a machine learning model based on the first target detection result to obtain a second target recognition result; the target attribute calculation module is used for calculating a target bounding box and a target motion trend based on the second target recognition result; and the risk early warning generation module is used for judging a target risk level according to the target bounding box and the target motion trend and generating a risk early warning signal. By adopting the system, the accuracy and the real-time performance of road target detection in a foggy environment can be improved.

The application discloses a marine low-speed diesel engine propulsion system safety monitoring instrument, and relates to the technical field of ship safety monitoring. The lower side of the outer wall of the base is provided with a positioning block one, the side of the diesel engine body close to the base is provided with a groove one, the groove one is matched with the positioning block one, the lower side of the outer wall of the positioning block one is provided with a mounting groove, the inside of the mounting groove is provided with a pressure sensor, the middle part of the outer wall of the base is provided with a mounting hole, the inside of the mounting hole is provided with a pre-tightening bolt, the inner wall of the base is provided with a shearing groove in the radial direction, and the inside of the shearing groove is provided with a buffer block in interference. The positioning block one, the groove one, the pre-tightening bolt, the pressure sensor, the acceleration sensor and the temperature sensor are installed, the function of stable information collection is realized, the base installation pre-tightening force can be maintained in the vibration working condition through the self-locking of the positioning block one and the groove one, and the equipment information collection accuracy and stability are improved.

The embodiment of the present application discloses a data acquisition method and a data acquisition card. The data acquisition method is applied to the data acquisition card, and the data acquisition card comprises a comparator, a delay module in communication connection with the comparator, a fan-out module in communication connection with the delay module and used for N equal division of a trigger signal output by the delay module, N being an integer greater than 1, a field programmable gate array in communication connection with the fan-out module, the field programmable gate array comprising a clock unit, and an analog-to-digital conversion module in communication connection with the field programmable gate array. The data acquisition method comprises the following steps: receiving an instruction; controlling the clock unit to have clock signals with the same frequency and N equal division of phases according to the instruction; receiving a trigger signal transmitted by the fan-out module and a digital signal transmitted by the analog-to-digital conversion module, processing the trigger signal based on the clock signal, and reordering the digital signal according to the processed trigger signal. The technical scheme provided by the embodiment of the present application can improve the data acquisition precision.

The invention belongs to the technical field of sensor array detection, and provides a sensor array device based on stepping scanning and a detection method, and the method comprises the steps: collecting signals through the comparison of a test group and a control group, and precisely judging whether aliasing occurs or not through the analysis of spectrum peak value and time domain performance; further defining a risk super-harmonic frequency band through multi-gradient driving fundamental frequency test, and verifying and positioning a super-harmonic order and an interference source in combination with dynamic fine tuning; and finally, eliminating aliasing by adopting a driving parameter fine tuning or reverse digital compensation mode according to working condition limitation, and extracting a real detection signal. The device adaptive to the method adopts a modular design, and all modules cooperate and are efficient, so that the device can be stably adaptive to a high-speed stepping working condition; according to the invention, accurate determination, positioning and elimination of aliasing are realized, the detection accuracy and stability are improved, different process requirements are adapted, and the detection error is reduced.

The utility model discloses a road flatness detection vehicle, which relates to the technical field of road flatness detection and mainly comprises a first marking component, a second marking component, a controller and the like, and the first marking component and the second marking component are respectively used for spraying and marking a convex part and a concave part of a road surface. According to the utility model, the measuring wheel rolls on the road surface, when the measuring wheel rolls across the convex part and the concave part of the road surface, the signals are respectively transmitted to the sensor a and the sensor b through the first driving rod and the second driving rod, the received signals are further transmitted to the controller, and the controller outputs flatness curve graphs of the concave part and the convex part, so that the acquisition efficiency and the acquisition precision are improved. And meanwhile, the first driving rod and the second driving rod push a plug a and a plug b on the first driving rod and the second driving rod, so that the plug a and the plug b are separated from the discharging cavity and the first cavity correspondingly, discharging channels of the first paint box and the second paint box are opened, and paint spraying marking with different colors is conducted on the convex part and the concave part of the road surface correspondingly.