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112 results about "Thermal mapping" patented technology

Self correcting wave soldering machine

A self-correcting wave soldering machine for soldering a RGB in an SMT manufacturing system. The wave soldering machine includes at least one thermal infrared camera that generates thermal images of the RGB so as to provide thermal imaging processing to monitor, characterize and predict processing temperatures. The wave soldering machine generates a heat map using the thermal images and compares the heat map to a thermal gradient to provide real time profiling by digitally connecting it to heating and other mechanically controlled systems, such as flux dispensing, conveyor speed and parallelism of the wave soldering machine.
Owner:JABIL INC

Automatic production line control system and method

The invention relates to the field of welding control, in particular to an automatic production line control system and method.The method comprises the steps that temperature distribution of a welding area is obtained, a temperature heat map is generated, and an isotherm set is extracted; and calculating a temperature abnormal value based on the curvature change of the pixel points on the isotherm, and performing weighted summation by taking the distance from the welding spot to the isotherm as a weight to obtain a comprehensive abnormal value. Meanwhile, intersection point distance sequences of the welding spots and the isotherm in different directions are obtained, the uniformity of isotherm intervals is analyzed, the distance sequence similarity mean value of the variable coefficient and the adjacent direction is calculated, and a temperature gradient abnormal value is constructed. And finally, the product of the curvature abnormal value and the comprehensive abnormal value is processed through an activation function to obtain an abnormal degree value, the abnormal degree value is compared with a preset threshold value, whether the welding area is abnormal or not is judged, welding operation is adjusted according to the abnormal degree value, and therefore the welding process is optimized, and the welding quality and the production efficiency are improved.
Owner:HANGZHOU XINGZHI FANGZHOU INFORMATION TECH CO LTD

Passenger compartment temperature control method and system and vehicle

The invention provides a passenger cabin temperature control method and system and a vehicle. The method specifically comprises the following steps: (1) receiving a temperature distribution heat map and a driver and passenger image sent by an infrared imaging device and a camera; (2) acquiring actual body surface temperatures of all drivers and passengers in a passenger compartment; and (3) the air outlet volume and / or the air outlet temperature of an air outlet in the temperature control area are / is controlled, so that the actual body surface temperature of the driver and passengers in the temperature control area reaches the set target body surface temperature. The air outlet volume and the air outlet temperature of the air outlet of the temperature control area are controlled based on the actual body surface temperature of the driver and the set target body surface temperature, zoning control over the temperature in the passenger compartment is achieved, and the individual requirements of a user can be better met.
Owner:CHERY AUTOMOBILE CO LTD

Intelligent temperature control method and system for die-casting die

Provided are intelligent temperature control method and system for die-casting die. Method includes setting target number of groups of temperature control regions and configuring initial temperature determination rule and initial temperature control strategy for each temperature control region; obtaining front-side thermal image of die using infrared camera mounted on both sides of spraying manipulator, and matching the same with CAD drawing of the die to obtain CAD thermal map of die; determining monitoring region on surface of die, and classifying monitoring regions into target number of groups of temperature control regions based on expected temperature requirement of die; calculating temperature value and determining temperature state of each monitoring region based on initial temperature determination rule of each temperature control region and temperature value of each monitoring region, and adjusting temperature of each monitoring region based on initial temperature control strategy of each temperature control region.
Owner:ASSAB TOOLING TECH SHANGHAI

Method for quantifying fusion degree of new asphalt and old asphalt

The invention discloses a method for quantifying the fusion degree of new asphalt and old asphalt, and relates to the technical field of road thermal regeneration. An asphalt film sample on the surface of an RAP material is subjected to layered extraction, and a uniform film is formed in combination with a potassium bromide sheet technology; secondly, acquiring spectral characteristic data and characteristic peak values of each layer of sample by adopting a Fourier transform infrared spectroscopy FTIR technology, normalizing the data by adopting methods such as baseline correction and standardization, extracting characteristic peak positions and intensity by utilizing a first-order derivative, and constructing a standardized curve; a dynamic time warping (DTW) algorithm is adopted to quantify the spectrum curve matching degree of the new asphalt and the old asphalt, a fusion similarity index FSI is defined, and the similarity of the new asphalt and the old asphalt in chemical component distribution is effectively quantified; meanwhile, a microscopic infrared spectrum technology is adopted to further perform local scanning on RAP particle surface spectrum distribution, a fusion heat map is generated in combination with an FSI result, and the local fusion difference of the new asphalt and the old asphalt is visually displayed.
Owner:BEIJING MUNICIPAL ROAD & BRIDGE BUILDING MATERIALGRP +4

Fire condition information processing and transmission method based on wireless communication network

The invention discloses a fire condition information processing and transmission method based on a wireless communication network, and relates to the technical field of fire condition information processing and transmission, and the method specifically comprises the following steps: generating a first draft of a fire situation map based on uploaded fire sensing information, and judging the spatial distribution state of sensing nodes, if it is judged that the sensing nodes are distributed unevenly, identifying all abnormal gathering areas in the first draft of the fire situation map and marking the abnormal gathering areas as focusing candidate areas; and identifying all abnormal points in each focusing candidate area, extracting spatial anomaly perception information of each abnormal point, analyzing and evaluating the distribution focusing degree of each focusing candidate area after extraction, and classifying each focusing candidate area according to an evaluation result. According to the method, the problem of heat map deviation caused by non-uniform distribution of sensing nodes in fire map construction is solved, and dynamic adjustment of a regional map strategy and real restoration of fire distribution are realized.
Owner:FUJIAN POST&TELECOM PLANNING & DESIGNING INST CO LTD

Circuit board device thermal analysis system based on target detection

The invention relates to the technical field of electronic device thermal management, in particular to a circuit board device thermal analysis system based on target detection, which comprises a thermal processor, and the thermal processor is in communication connection with a thermal map generation module, a thermal model construction analysis module, an improved evaluation module and a thermal response module. An image acquisition unit and an image processing unit are arranged in the heat map generation module; according to the method, the device on the PCB is accurately identified and positioned through image processing and target detection technologies, and the thermal infrared image is accurately associated with the device, so that thermal analysis more accurately reflects the actual heat production condition of the PCB, a more targeted basis is provided for thermal management through model construction and analysis, and the thermal management efficiency is improved. Meanwhile, the thermal analysis label is obtained based on information feedback, targeted management on the PCB based on the thermal analysis label is facilitated, simulation evaluation is conducted on improvement of the improvement scheme, whether the improvement scheme of the PCB reaches the standard or not is judged, and the improvement effect and feasibility of the improvement scheme are visually known.
Owner:LUOU INTELLIGENT MFG (SHANDONG) DIGITAL TECH CO LTD

Inspection method based on multi-modal fusion, six-degree-of-freedom mechanical arm, terminal and storage medium

The invention belongs to the technical field of equipment detection, and particularly relates to a multi-modal fusion-based inspection method, a six-degree-of-freedom mechanical arm, a terminal and a storage medium, and the method comprises the steps: constructing a multi-modal sensing tail end module integrated with a visual sensor, an infrared thermal imaging sensor and a touch sensor on the six-degree-of-freedom mechanical arm; performing space-time alignment and fusion processing on the acquired image data, heat map data and tactile data; judging the operation state of the equipment based on the fused comprehensive feature data; the visual sensor provides equipment surface appearance and identification information, the infrared thermal imaging sensor captures temperature distribution and thermal gradient change, the touch sensor detects mechanical vibration, surface texture and contact pressure, a three-dimensional sensing system is formed, and the problem of one-sidedness of single-mode data is solved.
Owner:SHANDONG NEW GENERATION INFORMATION IND TECH RES INST CO LTD

Intelligent wafer thermodynamic diagram analysis and abnormal region positioning system

The invention provides an intelligent wafer thermodynamic diagram analysis and abnormal region positioning system, and relates to the technical field of intelligent manufacturing, and the system comprises a principal system which comprises a data collection subsystem, a data analysis subsystem, a thermodynamic diagram generation subsystem, an anomaly detection and positioning subsystem, a process optimization subsystem and an output subsystem. According to the invention, the temperature distribution, current density and material stress data of the wafer are collected in real time through the data collection subsystem by using an infrared sensor and optical imaging equipment, and the central control unit coordinates the subsystems to operate in sequence, so that the whole process automation from data collection to abnormal positioning is realized. Compared with traditional manual detection, the system does not need to depend on experience of technicians, large-scale and real-time monitoring can be carried out on wafers, the detection efficiency is remarkably improved, potential anomalies are found in time, defects are prevented from being generated, and an abnormal area is recognized through the anomaly detection and positioning subsystem by adopting a deep learning model.
Owner:上海芯无双仿真科技有限公司

Device and method for fish behavior monitoring

The invention relates to the technical field of image processing, in particular to a device and method for fish behavior monitoring, and the device comprises a fish body grid construction module, a vertex optical flow tracking module, a compression potential energy calculation module, an energy field thermodynamic mapping module and a swimming mode identification module. According to the method, a triangular topological grid covering the surface of an organism is constructed, a time sequence vertex light flow track is tracked, an affine transformation matrix is used for analyzing the area scaling ratio of a local grid unit in the movement process, and geometric deformation of a visual layer is mapped into a physical potential energy index representing muscle contraction strength; a micro deformation difference is amplified in combination with nonlinear exponential operation, a visual energy distribution thermodynamic map is generated through Gaussian smoothing processing, conduction characteristics of a body high-energy connected region in a space-time dimension are identified, and crossing from pure track observation to biomechanical function evaluation is realized. And the energy consumption efficiency and explosion starting characteristics in different tail swinging modes can be accurately identified.
Owner:TIBET AUTONOMOUS REGION INST OF PLATEAU BIOLOGY

Field catalyst evaluation system and method based on surface detection

The invention discloses an on-site catalyst evaluation system and method based on surface detection, and belongs to the technical field of flue gas treatment. According to the technical scheme, the field catalyst evaluation system based on surface detection comprises a gas inlet atmosphere modulation module, a reactor module, a gas detection module and a tail gas treatment module which are connected in sequence; the gas inlet atmosphere modulation module comprises a gas inlet flue, a gas inlet stop valve, a gas inlet adjusting valve, a flue gas mixer, a modulation gas pipeline, a modulation gas stop valve and a modulation gas mass flow meter; the high-density sensor array and the optical imaging unit are combined with a spatial interpolation algorithm to generate an efficiency distribution heat map, real-time monitoring of surface activity distribution of the catalyst is achieved, through parallel testing of multiple reactor components and machine learning life prediction, the evaluation precision and research and development efficiency of the catalyst are remarkably improved, and the research and development cost is lowered. The method has the advantages that the catalyst surface efficiency heterogeneity is captured in real time, multi-channel accelerated testing is supported, and the service life is accurately predicted.
Owner:SHANDONG LAIGANG ENERGY SAVING ENVIRONMENTAL PROTECTION ENG

Airtightness detection tool and airtightness detection method based on multi-sensor fusion

The invention discloses an air tightness detection tool and method based on multi-sensor fusion, and the tool comprises a detection platform, a nylon imitation block, microphones, pressure sensors and an infrared camera, and the microphones and the pressure sensors are installed and distributed through an installation position array preset on the nylon imitation block. An infrared camera collects a heat map of a nylon imitation block area from the outside, a multi-sensor fusion framework is formed to obtain pressure gradient change, sound wave data and temperature data, and leakage points are analyzed and deduced based on the pressure gradient change, the sound wave data and the temperature data. The microphone and the pressure sensor are installed on the nylon imitation block in a pre-embedded mode, matrix structures are formed respectively to monitor internal sound wave data and pressure gradient change in the airtightness detection process of the to-be-detected workpiece, the infrared camera is adopted outside to collect temperature data, the sound wave data, the pressure gradient change and the temperature data are combined, and the airtightness detection accuracy of the to-be-detected workpiece is improved. And the three-dimensional coordinate of the leakage point is quickly determined.
Owner:CHINA MASCH PRECISION FORMING IND TECH RES INST (ANHUI) CO LTD

Intelligent temperature control method and system for die-casting die

Provided are intelligent temperature control method and system for die-casting die. Method includes setting target number of groups of temperature control regions and configuring initial temperature determination rule and initial temperature control strategy for each temperature control region; obtaining front-side thermal image of die using infrared camera mounted on both sides of spraying manipulator, and matching the same with CAD drawing of the die to obtain CAD thermal map of die; determining monitoring region on surface of die, and classifying monitoring regions into target number of groups of temperature control regions based on expected temperature requirement of die; calculating temperature value and determining temperature state of each monitoring region based on initial temperature determination rule of each temperature control region and temperature value of each monitoring region, and adjusting temperature of each monitoring region based on initial temperature control strategy of each temperature control region.
Owner:ASSAB TOOLING TECH SHANGHAI

Wireless remote indoor sensor for home automation

A heating, ventilation, and air conditioning (HVAC) system includes a network of wireless remote climate sensors to develop a complete heat map of an enclosed space. The remote climate sensor is configured to collect temperature and humidity data on a zone of the enclosed space. The HVAC system uses a network of these sensors to obtain data points across the enclosed space. The resulting heat map is used by the HVAC system to determine where to direct air in the enclosed space. By comparing the temperature and humidity at a specific remote climate sensor with the user's desired temperature and humidity, the HVAC system can decide whether to increase or decrease the air flow through a variable damper that is located near the remote climate sensor. The disclosed HVAC system provides even comfort to the user along with reduced energy consumption.
Owner:LENNOX IND INC

An intelligent AI detection method based on infrared thermography and automobile diagnosis

ActiveCN120521882BImprove fire safety detection performanceEnsure spatiotemporal consistencyVehicle testingRadiation thermographyEngineeringElectric vehicle
The application discloses an intelligent AI detection method based on infrared thermal images and automobile diagnosis, and the technical scheme of the application significantly improves the electric vehicle fire safety detection efficiency through multi-modal data fusion and intelligent analysis, the synchronous collection of double-band infrared and vehicle operation parameters constructs a multi-dimensional data basis, ensures the space-time consistency of thermal radiation characteristics and electrical state, secondly, the dynamic correlation model realizes the accurate triggering of abnormal current to thermal image enhancement, the partition gradient processing combined with dynamic threshold adjustment optimizes the detection sensitivity according to the thermal characteristics of different components, the three-dimensional thermal field reconstruction breaks through the limitation of surface detection, and can identify internal potential hot spots, finally, the closed-loop diagnosis is formed through the intelligent matching of the case library, so that the fault positioning accuracy reaches the component level, and the overall scheme solves the problem that the existing technology only relies on thermal infrared images for electric vehicle fire safety detection, and the contrast of the infrared thermal image is low and the detail resolution is poor.
Owner:DONGGUAN XINTAI INSTRUMENT CO LTD

Resiliometer based on rebound-acoustics and strength detection method thereof

The invention relates to a rebound-acoustics-based rebound apparatus and a strength detection method thereof.Firstly, a force sensor and an audio acquisition device are integrated in the rebound apparatus, when a rebound test is carried out, the force sensor measures the stress change before and after a spring is impacted, and then the rebound value reading is calculated by calculating the relationship between the spring elongation and the stress; after the test is finished, the magnetic attraction device automatically retracts the spring to ensure that the device can be used for the next test, then the audio acquisition device records a sound signal in each test process, the sound signal is preprocessed through a WaveNet algorithm to remove noise, then features are extracted from the collected sound signal, and the features are extracted from the collected sound signal. And combining the extracted sound features into a feature matrix, analyzing and screening out features highly related to the strength of the building material by using a correlation heat map, and finally inputting a rebound value and the screened sound features into an XGBoost regression model to predict the strength of the building material. The method supports off-line operation and is suitable for rapid detection and evaluation of various hard building materials.
Owner:FUZHOU UNIV

System, method and apparatus for tracking fallout of atmospheric sounding devices

PCT designated stageWO2025248405A1InstrumentsRadiosondeRocketsonde
The present disclosure relates to a system, method, and apparatus for mapping the fallout of atmospheric sounding devices such as radiosondes. This technology provides a mechanism for receiving launch data, plotting launch sites, and displaying trajectory heatmaps through a graphical user interface. The system includes features for overlaying concentric range circles, offering interactive timelines, and distinguishing between radiosonde altitudes using color indicators. Additional functionalities enable the display of detailed fallout data, calculation of Circle Error Probable (CEP) for estimating landing sites, and generation of fallout density heatmaps. These capabilities facilitate a comprehensive understanding and management of radiosonde deployment and environmental impact, enhancing the efficiency of meteorological data collection and analysis.
Owner:LANDING ZONES CANADA INC

A spinal column segmentation method

The application discloses a kind of spine segmentation methods, comprising the following steps: step 1: data pre-processing, generate spine heat map and windowing to image, the window width and window width of lumbar bone tissue are respectively set to 400 and 1800;Step 2: using U-Net structure roughly locates lumbar vertebra;Step 3: calculate image bounding box, obtain the range of selected lumbar vertebra using 4 neighborhood, and select the voxel with HU value greater than 0.3 times of the maximum HU value of image as possible lumbar vertebra, then the obtained bounding box is extended in each dimension 0.05-0.2 times of the corresponding image size;Step 4: network segmentation based on XUnet network, XUnet uses Inception block to extract features;Through the implementation of the application, while deepening the network width and depth, improving the network expression ability, further reduces the redundant parameters in the network, realizes the deep learning and automatic efficient vertebral automatic segmentation effect, the positioning segmentation effect is good, plays a prominent progress, has certain use value and popularization value.
Owner:杭州邦杰星医疗科技有限公司

Correction of the development strategy of parts manufactured by additive manufacturing by the study of tool trajectories

Method for configuring the manufacturing of a part using a machine for additive manufacturing, by means of a production strategy indicating at least one manufacturing trajectory followed by the machine, comprising steps of: - determining (310) a thermal map for at least one layer of the part, associating a local temperature rise with the points of the trajectory; - determining (314) critical thermal thresholds as a function of a correlation between the local temperature rise and a measurement relating to a defect representative of the quality of the part; - adapting (316) the production strategy as a function of the thermal thresholds and the thermal map. Figure for the abstract: Fig. 3
Owner:SAFRAN ADDITIVE MFG CAMPUS +1

Multimodal resolved time-resolved raman spectroscopy thermographic interactive analysis method and system

The application discloses a multi-peak decomposition time-resolved Raman spectrum thermal map interactive analysis method and system, and belongs to the field of spectrum analysis. The method comprises the following steps: continuously or time-divisionally collecting a to-be-measured sample to obtain Raman spectrum data corresponding to different time points; preprocessing the original Raman spectrum data; extracting spectral characteristic peaks by using an adaptive peak value recognition algorithm, and performing characteristic peak integral calculation; obtaining time contribution coefficients of different chemical components or characteristic signals in the time dimension by using a multi-peak decomposition algorithm; generating a Raman thermal map in the time dimension according to the characteristic peak intensity and / or the time contribution coefficients; establishing an index mapping relationship between the position of the Raman thermal map and the corresponding time Raman spectrum data; and responding to the interactive operation of the user on the thermal map and displaying the Raman spectrum curve at the corresponding time point in real time. The application can realize visual display, dynamic monitoring and interactive analysis of time sequence data of Raman spectrum, and improves the efficiency and accuracy of Raman signal analysis of dynamic samples.
Owner:HARBIN ENG UNIV

A mass spectrometry imaging method for detecting metrafenone on the surface of wheat leaves

The present invention relates to a mass spectrometry imaging detection method for metrafenone on the surface of wheat leaves, which comprises the following steps: S1, providing a wheat leaf with metrafenone attached to the surface; S2, applying a matrix to the surface of the wheat leaf by a sublimation method; S3, setting the spraying thickness to 0.7 μm-1.5 μm, the laser spot diameter and the laser intensity to (40 μm-75 μm, 56.4%-71.0%) and the imaging step length to (30 μm-50 μm, 30 μm-50 μm) for MALDI-MSI analysis. According to the mass spectrometry imaging detection method for metrafenone on the surface of wheat leaves of the present invention, the interference of the matrix to the target object can be effectively avoided by limiting the coating method and the instrument parameters, and the imaging heat map is made clear and intuitive by optimizing the instrument parameters.
Owner:EAST CHINA UNIV OF SCI & TECH

A power equipment image processing method based on fiber bundle imaging, a storage medium and a system

A kind of power equipment image processing method based on optical fiber bundle imaging, storage medium and system, method is: signal output by infrared fiber bundle is collected by infrared camera pixel matrix, unit in matrix is divided into effective unit and invalid unit, and generate unit division binary matrix data file;Again processing obtains temperature correction matrix data file, temperature segmented point corresponding response value matrix data file, and establish the correction value of response value matrix under different radiation scene;Through numerical fitting and interpolation compensation method, the video stream of optical fiber bundle transmission image is carried out real-time restoration and optimization, completes the inversion from thermal map to temperature field distribution;The present application also includes the storage medium and system of storing the power equipment image processing method based on optical fiber bundle imaging of running this, the present application carries out real-time restoration and optimization to the video stream of optical fiber bundle transmission image by numerical fitting and interpolation compensation method, completes the inversion from thermal map to temperature field distribution.
Owner:XI AN JIAOTONG UNIV

Infrared Thermal Image Biped Region Segmentation Method Based on Relative Temperature Difference

The present invention relates to a method for segmenting the bipedal region of an infrared thermal image based on relative temperature difference, belonging to the field of computer vision technology. The method includes: S1: Establishing a global average temperature-time curve of the biped; S2: Determining the moment t at which the temperature difference thermal image segmentation needs to be performed in the thermal image sequence; S3: Determining the reference moment t0; S4: Obtaining the bipedal edges of the temperature difference thermal image at moment t; S5: Using the U2-Net network to extract the complete edges of the biped in the infrared thermal image. The present invention can achieve the segmentation of the bipedal region with small difference or poor contrast between the bipedal region and the background in the active infrared thermal image sequence.
Owner:CHONGQING NORMAL UNIVERSITY

Thermal mapping catheter

A catheter is disclosed comprising a catheter shaft including a proximal end and a distal end. A flexible framework can be connected to the distal end of the catheter shaft, wherein the flexible framework includes a plurality of heating electrodes and a temperature sensor. The plurality of heating electrodes can be configured to be heated to a first temperature, the first temperature being lower than which radio frequency ablation is performed. The plurality of heating electrodes can be configured to be heated to a second temperature, the second temperature being a temperature at which radio frequency ablation is performed.
Owner:ST JUDE MEDICAL CARDILOGY DIV INC

Fatigue test crack detection method based on thermal imaging

The invention discloses a fatigue test crack detection method based on thermal imaging. In the periodic fatigue loading process, the surface temperature change of a sample is detected in real time through infrared thermal imaging, and an amplitude diagram and a phase diagram of weak temperature fluctuation are obtained through calculation; segmenting the sample through local phase consistency, prefabricating a gap and a background, and only performing subsequent analysis on a sample area so as to eliminate background interference; after the amplitude diagram is binarized, the boundary displacement influence is eliminated through a simple boundary displacement review strategy and by means of the boundary displacement direction and stress concentration point position relation, complex feature point matching and displacement estimation between images do not need to be conducted through the algorithm, the calculated amount is small, and reliability is high; the crack length is calculated according to the detected movement track of the crack tip feature point, the method does not depend on static crack features, the basic assumption that sample changes inevitably come from damage generation and development is utilized, and crack length evaluation is not affected even if wrong feature points are extracted through single-frame heat map analysis.
Owner:CHINA AIRPLANT STRENGTH RES INST +1

Endoscopic examination support apparatus, endoscopic examination support method, and recording medium

In the endoscopic examination support apparatus, the image acquisition means acquires an endoscopic video captured by an endoscope. The lesion detection means detects a lesion candidate from the endoscopic video. The heat map generation means generates a heat map indicating a possibility of lesion of the lesion candidate in the endoscopic video by a color. The display control means displays a position of a lesion on a frame of the endoscopic video based on the lesion candidate and the heat map.
Owner:NEC CORP

Heat dissipation system and device

The invention discloses a heat dissipation system and device, and relates to the technical field of thermal management, and the system comprises a training unit which is used for obtaining a heat dissipation assembly structure and an equivalent thermal resistance network, a supervising and training thermal conductance decision module, a fuzzy judgment unit which is used for connecting a state machine and being embedded into a first fuzzy judgment device, obtaining a real-time heat map and generating a thermal management instruction, the heat dissipation decision making unit is used for triggering a second heat dissipation decision making device according to the heat management instruction, determining a heat dissipation strategy based on a heat value and heat distribution heat dissipation regulation and control decision, and responding to a heat dissipation assembly to conduct heat dissipation regulation and control management, and is used for solving the problems that in the prior art, heat dissipation regulation and control accuracy is insufficient, heat dissipation efficiency is limited, and heat dissipation efficiency is poor. The heat dissipation efficiency and the regulation and control precision can be effectively improved, and the heat dissipation performance is enhanced.
Owner:BEIJING XINERTEL TECH CO LTD

Building outer wall hollowing identification method and system based on pulsed eddy current thermal imaging

The invention provides a building outer wall hollowing identification method and system based on pulsed eddy current thermal imaging, and the method comprises the steps: enabling a pulsed eddy current excitation device to act on the surface of a building outer wall, applying transient pulsed magnetic field excitation to a metal component in a wall body, and enabling the metal component to sense eddy current and serve as an internal heat source to generate Joule heat; synchronously acquiring the transient pulsed magnetic field excitation by using an infrared thermal imager to obtain a heat map sequence formed by internal heat conduction on the surface of the outer wall of the building, and preprocessing the heat map sequence; and on the basis of the preprocessed heat map sequence, solving a heat conduction inverse problem to reconstruct a wall internal thermal attribute feature map, and on the basis of the wall internal thermal attribute feature map, completing the identification of the building external wall hollowing. According to the invention, deep, accurate, quantitative and automatic detection of building outer wall hollowing is realized, and reliability, efficiency and applicability are obviously better than those of the prior art.
Owner:HUNAN CITY UNIV