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62 results about "Thermal mapping" patented technology
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Optical thermal mapping for detecting vulnerable plaque
InactiveUS7004911B1Easy to operateSimple, real-timeCatheterDiagnostic recording/measuringFiberGrating
An optical thermal device and methods for monitoring temperature and detection of a vulnerable plaque of a patient comprising an elongate tubular element comprising at least one optical fiber; the fiber having at least one optical grating along an axis of the fiber; and a light source having a light beam that is coupled into the at least one optical fiber; wherein the optical grating reflects a certain wavelength or intensity of the light beam, the certain wavelength or intensity of the reflected light beam being correlated to the temperature of the tissue regions.
Owner:MAXWELL SENSORS +1
Prediction method and visualization method of traffic jam
ActiveCN104157139ABig amount of dataWide coverageDetection of traffic movement2D-image generationInformation repositoryData ingestion
The invention discloses a prediction method and visualization method of traffic jam. The methods comprise the following steps: GPS data sent back by a taxicab is utilized for being associated to roads in an electronic map through the map matching method; the road section speed calculated in terms of the matched data is utilized for judging the traffic state of road sections; the evolution rule of the traffic jam, including formation and dissipation of the traffic jam, is extracted with the utilization of the historical data; the traffic jam prediction is performed with the utilization of the sliding time window scheme after a real-time traffic information database is associated; the congestion intensity and the influence range of congested road sections can be presented by a thermodynamic chart after the congestion intensity of the congested road sections is calculated based on the prediction result. The prediction method provided by the invention can realize highly accurate traffic jam prediction, and the visualization method of the thermodynamic chart enables the traffic jam to be visualized and understandable, so that the location and the influence range of the traffic jam can be discerned conveniently.
Owner:SUN YAT SEN UNIV +1
Thermal mapping of a cryoablation volume, for image-guided cryosurgery
InactiveUS20060155267A1Facilitating accurate cryoablation of a cryoablation targetFacilitating cryosurgeryDiagnosticsComputer-aided planning/modellingDiagnostic Radiology ModalityImaging modalities
The present invention relates to systems and methods for rendering visible to a cryosurgeon an estimated border of a cryoablation volume, thereby facilitating accurately delimited cryoablation of pathological tissues. More particularly, the present invention relates to systems and methods for reading temperature and location information from images provided by imaging modalities and optionally from thermal sensors, inferring from that information the three-dimensional shape and position of a volume of tissue considered reliably cryoablated, and presenting this shape and position information to a cryosurgeon by integrating a visual model of that information with one or more images derived from standard imaging modalities, and displaying for a cryosurgeon that integrated image.
Owner:GALIL MEDICAL
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
Systems and methods for generating and using a heat map of a retail location to reduce overcrowding
System and methods for generating a heat map for a retail location are disclosed. A system includes a user interface of a mobile device associated with a user and a monitoring system. The monitoring system monitors regions of a retail location and determines a plurality of crowd sizes corresponding to each region, each crowd size indicating a number of people present at a specified time. A heat map generation module generates a heat map based on crowd size. A map analysis module determines a shopping route based on a waypoint associated with a product and crowd size. The map analysis module receives a request for the heat map from the mobile computing device. The heat map generation module renders the heat map overlaid with icons and the shopping route. The map analysis module presents the heat map on the user interface.
Owner:WALMART APOLLO LLC
Apparatus and Method for Temperature Mapping a Rotating Turbine Component in a High Temperature Combustion Environment
Apparatus and method for temperature mapping a rotating component (12) in a high temperature combustion environment. The apparatus includes a thermal imager (14) having a field of view to sense infrared (IR) emissions. Emissivity of a surface of the component is subject to variation in the combustion environment. A radiance emitter (18) defines a spot within the field of view of the thermal imager. The spot indicates a respective emissivity value. A processor (30) is connected to the thermal imager to generate a radiance map of the component based on the IR emissions from the component. The processor includes a thermal calibration module configured to calibrate the radiance map based on the emissivity value of the spot within the field of view of the thermal imager to generate a calibrated thermal map of the component that displays absolute temperature over the surface of the component.
Owner:SIEMENS ENERGY INC
Coating for environmental protection and indication
InactiveUS20070104859A1Efficient use ofLow production costAlkali metal silicate coatingsPretreated surfacesBrief periodsOxygen
A composition for coating a surface comprises an adhesive cementitious material such as a geopolymer, a kaolin, or mixtures thereof, and a filler material. Various filler materials are disclosed, with which the coating composition may be used for thermal mapping, oxygen protection to organic dopants, thermal protection, radiation protection, anti-tamper protection, mechanical abrasion protection, or high emission of electromagnetic radiation. With certain fillers, the coating composition remains thermally stable up to 1200° C., and / or remains thermally operable for brief periods up to about 1400° C. When the coating composition includes a wetting agent, and the filler is between 0.01 micrometer and 10 micrometers in size, the coating composition can take the form of an aqueous spray. With certain fillers, the coating composition can cure at a temperature below 100° C. The coating composition can also be a thick film which provides resistance to cracking and peeling during severe thermal exposure.
Owner:SPACE MICRO A CORP OF DELAWARE
Thermal sensing device for thermal mapping of a body conduit
InactiveUS20050240117A1Facilitate communicationIncrease pressureCompression machinesCatheterAngioplasty balloon catheterPercent Diameter Stenosis
Owner:GALIL MEDICAL
Multistage variable reluctance motor/generator
ActiveUS8138652B2Optimize arrangement and construction and performance and cooling and controlOptimize design elementSynchronous generatorsAC motor controlMotor designHigh torque
A compact, rugged, variable reluctance, variable speed, electric motor capable of producing high torque at high electrical energy conversion efficiencies is provided. The present invention provides for a multi-stage motor design having a number of discreet rotor and stator elements on a common shaft. This configuration provides for the simplest of magnetic structures and produces a powerful magnetic flux modelling design technique that is used to further optimize the motor design and subsequent control logic. Thermal mapping of the magnetic mass provides for advanced cooling techniques that are used to ensure long in-service life in the most extreme of industrial applications. The electric motor inherently provides low vibration thereby greatly reducing noise; low turn to turn voltage potentials thereby eliminating costly phase to phase shorting potential; efficient motor operation through the reduction in switching and copper losses in both the machine and its control system.
Owner:SUNCO INVESTMENTS
Wind tunnel test method for researching influence of transition on aerodynamic characteristics of hypersonic aircraft
ActiveCN112304563AHas isotropic physical propertiesReliable transition resultsRadiation pyrometryAerodynamic testingTetrafluoroethyleneFlight vehicle
The invention discloses a wind tunnel test method for researching influence of transition on aerodynamic characteristics of a hypersonic aircraft. The test model used in the method is a non-metallic polytetrafluoroethylene test model, the transition state of the hypersonic aircraft is simulated in a natural transition mode or a forced transition mode, the aerodynamic force of the test model is measured by adopting a conventional strain balance, the surface thermogram of the test model is obtained by adopting a thermal infrared imager, and the transition position of the test model is identified. And the aerodynamic force of the test model and the surface heat map of the test model are combined to research the influence of transition on the aerodynamic characteristics of the hypersonic aircraft. According to the wind tunnel test method, aerodynamic force data and the transition position of the test model can be measured at the same time, and a reference basis is provided for accurately analyzing the influence of transition on the aerodynamic characteristics of the test model.
Owner:中国空气动力研究与发展中心超高速空气动力研究所
On-line detection method and system for internal defects of composite insulator of line
InactiveCN110806427AQuick analysisAccurate analysisMaterial flaws investigationComposite insulatorsHeat flow
The application provides an on-line detection method and system for internal defects of a composite insulator of a line. An air gap defect existing in a composite insulator of a line is detected by determining a maximum temperature difference in a to-be-detected area of the composite insulator by using a collected infrared thermogram as a reference object based on portable external constant-current heat source excitation. According to the invention, the line composite insulator is heated by a constant-current heat source based on the heat flow propagation principle, infrared thermogram acquisition and surface temperature analysis; the propagation of the heat flow in the defect area and the defect-free area of the insulator is different and the temperature field distribution difference canbe reflected on the surface of the insulator; a thermal image sequence and the temperature distribution are collected by a thermal infrared imager so as to analyze the defect rapidly and accurately, so that a problem of difficulty in identifying deep defects and the like due to the relatively large curvature of the line composite insulator and relatively large thickness of a sheath are solved.
Owner:YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
Miniature cabin with health care and preservation function
The invention relates to a miniature cabin with a health care and preservation function. The miniature cabin comprises a cabin body, a control system, an infrared recognition system, a massage device, a magnet therapy device, a far infrared physical therapy device and an ultrasonic wave physical therapy device, wherein the control system, the infrared recognition system, the massage device, the magnet therapy device, the far infrared physical therapy device and the ultrasonic wave physical therapy device are arranged in the cabin body. The control system is in control connection with the infrared recognition system, the massage device, the magnet therapy device, the far infrared physical therapy device and the ultrasonic wave physical therapy device respectively to control the starting, the shutdown and the operation state of the devices. A mattress is arranged in the cabin body, and a user can lie on the mattress and enjoy massage, magnet therapy, far infrared physical therapy and ultrasonic wave physical therapy by operating the control system. Compared with the prior art, the miniature cabin has the advantages that multiple requirements of the user can be satisfied at the same time, the lesion portions of the user can be treated after the devices are adjusted according to an infrared chart, the user is enabled to perform healthcare or health care and preservation activities or entertainment activities in the cabin, the user is helped to relax physically and mentally, and the miniature cabin plays a beneficial and helping role in the health care and preservation of the user.
Owner:SHANGHAI HUABO INFORMATION SERVICE
Three-dimensional thermal imaging for the detection of skin lesions and other natural and abnormal conditions
ActiveUS8923954B2Diagnostics using spectroscopyCharacter and pattern recognitionData processing systemSkin lesion
Owner:THE JOHN HOPKINS UNIV SCHOOL OF MEDICINE
Accelerated magnetic resonance thermometry
ActiveUS20140005523A1Eliminate the effects ofReliable temperature measurementUltrasound therapyDiagnostic recording/measuringResonanceComputer science
A medical apparatus (300, 400, 500, 600) comprising a magnetic resonance imaging system (302). The medical apparatus further comprises a memory (332) storing machine readable instructions (352, 354, 356, 358, 470, 472, 474) for execution by a processor (326). Execution of the instructions causes the processor to acquire (100, 202) spectroscopic magnetic resonance data (334). Execution of the instructions further cause the processor to calculate (102, 204) a calibration thermal map (336) using the spectroscopic magnetic resonance data. Execution of the instructions further causes the processor to acquire (104, 206) baseline magnetic resonance thermometry data (338). Execution of the instructions further causes the processor to repeatedly acquire (106, 212) magnetic resonance thermometry data (340). Execution of the instructions further cause the processor to calculate (108, 214) a temperature map (351) using the magnetic resonance thermometry data, the calibration thermal map, and the baseline magnetic resonance thermometry data.
Owner:KONINKLIJKE PHILIPS ELECTRONICS NV
Infrared sequence thermography analysis method for impact defects of carbon fiber composite material
InactiveCN102735687AImprove effectivenessHigh precisionOptically investigating flaws/contaminationBrightness gradientFeature fusion
The invention belongs to the field of ultrasonic and infrared nondestructive detection and quantitative analysis of defects, and specifically relates to a method for splicing of impact defects on a carbon fiber composite material laminated sheet and compensation of infrared thermal imager visual angle error. Impact defects on a composite material are discontinuous defects in infrared thermal image information shown in ultrasonic and infrared nondestructive detection tests, and problem of the discontinuous defects is solved with the method of the present invention. According to the method, a filtering pre-treatment is performed on an infrared sequence thermography; defect feature fusion is performed in a time domain; defect splicing analysis is performed in a spatial domain, and then defect splicing is performed, wherein the visual angle problem of an infrared thermal imager and a tested sample is considered, and image distortion and brightness gradient error caused by the infrared thermal imager visual angle are analyzed, corrected and compensated; and finally, quantitative analysis is performed on the defects. With the present invention, the splicing problem of the discontinuous defects is effectively solved, and the error is corrected so as to obtain efficient and accurate quantitative analysis data.
Owner:BEIHANG UNIV
Wireless remote indoor sensor for home automation
PendingUS20200132332A1Reduce energy consumptionComfortable to userMechanical apparatusSpace heating and ventilation safety systemsCold spotEngineering
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. By conducting this analysis throughout the enclosed space and making incremental adjustments to the air flow in hot and cold spots in the enclosed space, the disclosed HVAC system provides even comfort to the user along with reduced energy consumption.
Owner:LENNOX IND
Dynamic Thermal Mapping
ActiveUS20130138371A1Operational securityReduce ambient temperatureCurrent/voltage measurementElectric connection testingElectricityEngineering
A load calculation device for determining the maximum electrical load that can be applied to an electrical circuit includes determines the temperature differential (ΔT) between a section of the electrical circuit and the ambient air temperature in which the section of the electrical circuit resides. The actual electrical load applied to the electrical circuit is also determined as is the design load of the electrical circuit. The maximum electrical load that can be applied to the electrical circuit is then determined based on the temperature differential and the electrical load applied to the electrical circuit and the circuit designed load. The load calculation device may be applied to an electrical joint and may be used to calculate the maximum temperature differential allowed for a given current to be applied at the electrical joint. This is particularly beneficial in connection with detecting and preventing electrical joint failure.
Owner:QHI GRP
Online infrared thermal imager and infrared thermal image data processing method
The present invention belongs to the infrared detection technology field, and provides an online infrared thermal imager and an infrared thermal image data processing method. The online infrared thermal imager comprises a lens, a detector, a processor and a client which are connected orderly, and a CMOS interface of the detector and a CCD video interface of the processor are connected. The lens is used to gather the infrared radiation of a target object to the detector, and the detector is used to acquire the infrared radiation and transform the infrared radiation into the infrared image data of a RAW format. The processor is used to receive the infrared image data, encode into the video data of a predetermined format and package the video data of the predetermined format into the infrared image data packets of a predetermined protocol standard, and the client is used to determine the temperature of the target object according to the gray values of the gray images and transform the gray images into the infrared thermal images of pseudo colors. The online infrared thermal imager of the present invention does not need to adopt a field programmable gate array for level transformation, and enables the device development difficulty to be reduced, the device stability to be improved and the circuit structure to be simplified.
Owner:HUNAN UNIV OF ARTS & SCI
Dynamic thermal mapping
ActiveUS9733285B2Operational securityCurrent/voltage measurementElectric connection testingElectricityThermal mapping
Owner:QHI GRP
Automatic snow removing anti-icing system
The invention discloses an automatic snow removing anti-icing system. The automatic snow removing anti-icing system comprises a climate induction subsystem, a thermal mapping subsystem, a control subsystem and an automatic spraying subsystem. The climate induction subsystem comprises pulse Doppler weather radar. According to the automatic snow removing anti-icing system, the position where the automatic snow removing anti-icing system needs to be installed on the road surface is precisely judged according to the thermal mapping subsystem, then the weather change situation is precisely predicted through the climate induction subsystem to determine the spraying amount, and finally a snow-melting agent is precisely sprayed through the control subsystem, so that the snow-melting agent is saved to the greatest extent, and the road safety is ensured.
Owner:FOSHAN NANFANG RITCO ENERGY CLEAN TECH CO LTD
Infrared probing system and method applied to high speed train
PendingCN108327743AReduce in quantityAccurate detectionVehicle route interaction devicesData platformPhotonics
The invention discloses an infrared probing system and method applied to a high speed train, and belongs to the field of railway safety monitoring. As for a probing system, a host is connected with acontrol box and a train number box, the control box is connected with a bottom probing box and two multielement probes, and each multielement probe comprises a multielement photonic device, a wide-angle multielement optical system and a probe processing circuit. The probing method comprises the steps that when a train passes through, infrared radiation is generated by a part at the train bottom, and is received by the wide-angle multielement optical systems and gathered to chips of the photonic devices, a voltage signal is generated through photovoltaic conversion, the probe processing circuits conduct treatment, such as amplification, filtering and regulating, on the voltage signal, after the voltage signal is subjected to treatment by the control box, the voltage signal is transmitted tothe host to generate a heat map, then correcting is conducted through an intelligent heat map processing module and a center large data platform of the system, and the integrated temperature Ts of each part is obtained; and whether the temperature Ts is larger than the preset value or not is judged, strong-heat early warning or heat shock alarming is sent according to the different preset values,and effective and accurate probing on the part at the train bottom of the high speed train is achieved.
Owner:BEIJING CTROWELL INFRARED TECHN +1
Infant stealing preventing method and system based on thermal imaging
ActiveCN107134114AReduce the risk of theftImprove security management and control efficiencyIndividual entry/exit registersAlarmsObstetricsTemperature difference
The invention provides an infant stealing preventing method and system based on thermal imaging. An outline infrared thermal image of a target object entering a designated zone is obtained by utilizing an infrared thermal imaging device, then temperature difference judging treatment is conducted on the infrared thermal image, judgment results normal or abnormal in temperature difference are output, finally access control enabling response is made when the temperature difference is normal, alarm output prompting response is made when the temperature difference is abnormal, the dependency of the obstetrics department of a hospital on manual access person verification is reduced, the safety management and control efficiency of the obstetrics department of the hospital is improved, and the risk that infants are stolen is reduced.
Owner:SHENZHEN GXA TECH CO LTD
Traffic state thermogram visualization method based on traffic saturation
ActiveCN108399742AWide applicabilityImprove visualizationDetection of traffic movementRoad networksSimulation
The invention relates to a traffic state thermogram visualization method based on traffic saturation, and belongs to the technical field of traffic. The method includes acquiring the point data of a video, a coil, a geomagnetic field in the traffic management, and calculating the saturation of the intersection and the road section in the road network, adopting an average clustering analysis method, dividing the class of all the saturation in the road network, and calculating the values of the saturation in various classes again, and selecting the point distribution density degree of the thermogram according to the saturation average value so as to obtain the traffic state thermogram based on the traffic saturation. The method has the advantages that the operation is simple, the calculationis convenient, and the defect that the proportion of the track data is small, the precision is low or the traffic state cannot be effectively displayed under the condition of ineffective acquisitioncan be made up, and meanwhile, the condition of the traffic bearing capacity of the intersection and the road section is considered, the traffic state can be visually displayed more fully and reasonably, and a support is provided for the scheme decision of the traffic manager.
Owner:KUNMING UNIV OF SCI & TECH
Figure virtual clothes changing method, terminal equipment and storage medium
PendingCN113436058AExtract full body featuresRealize Human Pose EstimationGeometric image transformationCharacter and pattern recognitionHuman bodyTerminal equipment
The invention relates to a figure virtual clothes changing method, terminal equipment and a storage medium, and the method comprises the steps: firstly carrying out the affine transformation of a human body image, obtaining a new image, feeding an original image and the new image into different pooling mechanisms and feature splicing mechanisms, extracting the whole body features of a human body from multiple aspects, and achieving the semantic segmentation of the human body; secondly, designing a human body posture heat map regression method based on a bounding box and Transform to assist the network in better realizing human body posture estimation, so as to relieve the influence of complex human body postures and character image overlapping on subsequent virtual clothes changing; then generating segmentation masks of clothes in the figure picture and a rough composite graph by using a generative model of the generative adversarial network; then, outputting a clothes picture conforming to the posture and figure information of a person through TPS thin plate spline transformation, and outputting a refined composite image through a full convolutional network, so that the composite image contains more clothes details; and finally, calculating and outputting a virtual clothes changing result by utilizing the matrix.
Owner:深圳市赛维网络科技有限公司 +1
Method and apparatus for thermal mapping and thermal process control
ActiveCN106158622ASemiconductor/solid-state device testing/measurementSemiconductor/solid-state device manufacturingEngineeringRadiation sensor
A thermal processing apparatus is provided in accordance with some embodiments. The thermal processing apparatus includes a heating source for transmitting incident radiation to a work piece having a circuit pattern formed on a front surface; a radiation sensor configured to receive light radiated from the front surface of the work piece; and a controller coupled to the radiation sensor, the controller being designed to control the heating source to reduce temperature variation of the work piece.
Owner:TAIWAN SEMICON MFG CO LTD
Hypersonic aircraft pulsating pressure test sensor optimization arrangement method
PendingCN114252232ASolve the problem of unreasonable layoutAvoid damageAerodynamic testingHeat flowFlight vehicle
The invention provides a hypersonic aircraft pulsating pressure test sensor optimization arrangement method. The method comprises the steps that an aircraft model which is equal to a pulsating pressure test aircraft model in proportion and size is machined; building an infrared thermogram measurement system; the aircraft model is fixed in a hypersonic wind tunnel for an infrared thermogram test, and infrared thermogram data of the windward side and the leeward side of the surface of the aircraft model are collected; heat map data are processed according to infrared heat map image processing software, and heat flow distribution on the surface of the aircraft model is calculated; judging surface flow states of the aircraft model, and determining starting and ending positions of each flow state; and according to the heat flow distribution and the surface flow state, guiding the arrangement of the high-frequency response sensor for the pulsating pressure test of the hypersonic aircraft. According to the invention, the sensor arrangement of the pulsating pressure test carried out in the hypersonic wind tunnel can realize the test purpose and reduce the damage to the profile of the aircraft caused by the installation of a plurality of sensors, and the problems of complicated and redundant pulsating pressure test data are reduced.
Owner:CHINA ACAD OF AEROSPACE AERODYNAMICS
Thermal imaging physiological detection system
InactiveCN108294731AExact measure distributionDiscover skin texture featuresDiagnostics using lightSensorsCommunication unitGrating
The invention belongs to the field of intelligent medical images and particularly relates to a thermal imaging physiological detection system. The system comprises a thermal imaging unit, a 3D gratingdepth map capture unit, a displayer unit, an Soc integrated processor, a storage unit, a communication unit, an operation interaction unit, a power supply unit and a cloud service unit. According tothe thermal imaging physiological detection system, by using thermal imaging information combined with 3D, the distribution of thermal sources of the surface of the human body is precisely measured, and the hardware basis is provided for application and development of a 3D thermal source model. According to the thermal imaging physiological detection system, a user can encrypt a https browsing mode through a webpage H5 and check 3D thermal imaging models and 3D full-color models rendered at all angles in an ROI area, the models can be framed in a vision field, switching among different imaginglayers is conducted, the skin texture characteristics corresponding to abnormal points in hot maps can be clearly found, and accordingly a medical mechanism achieves remote auxiliary diagnosis basedon the kind of information.
Owner:SHENZHEN HEILS ZHONGCHENG TECH CO LTD
Systems and methods for correcting measurement artifacts in magnetic resonance thermometry
PendingCN113196080AUltrasound therapyDiagnostic recording/measuringThermal mappingMagnetic resonance thermometry
Systems and methods for performing magnetic resonance (MR) thermometry include a magnetic resonance imaging (MRI) unit (100) and a controller (124) in communication with the MRI unit (100) and configured to cause the MRI unit (100) to acquire one or more baseline phase images of an imaging region (110) and one or more treatment phase images of the imaging region (110) subsequent to a temperature change of a subregion within the imaging region (110), electronically generate a thermal map pixelwise indicating the temperature change of the subregion based at least in part on the acquired baseline phase image and treatment phase image, computationally predict the temperature change of the subregion based at least in part on energy deposited in the subregion during treatment without reference to the generated thermal map, and determine whether the thermal map is inaccurate based at least in part on the temperature change of the subregion indicated by the thermal map and the predicted temperature change of the subregion.
Owner:医视特有限公司
Concrete filled steel tube void detection system and method
PendingCN113358698AImprove power densityAdd depthMaterial flaws investigationFeature extractionEngineering
The invention discloses a concrete filled steel tube void detection system. The system comprises an infrared thermal imager used for collecting temperature data of a detection surface, a power supply and a wire coil which are used for induction heating, and the wire coil is used for heating steel tube concrete in a form of generating eddy current on the surface of the steel tube; the system further comprises a computer which is provided with concrete filled steel tube void detection software, the software can control starting and stopping of heating and recording of temperature data, the system further comprises a void defect feature extracting program, the program extracts an infrared thermal image obtained from the thermal imager for heat source inversion and temperature prediction, and carries out subtraction on thermal image data obtained by experiments and thermal image data obtained by prediction to extract temperature anomaly features generated by void defects so as to judge whether void exists or not. The invention further discloses a void detection method which is adopted for detection, the void defect of the steel tube of 20 mm and within 20 mm can be quantitatively recognized, operation is convenient, and the detection efficiency is high.
Owner:CHINA JILIANG UNIV +1
Shear wave generation method, shear wave imaging method and thermal mapping or treating method utilizing such a generation method and installation for generating at least one shear wave
ActiveUS20170007206A1Easy to detectHigh pressureOrgan movement/changes detectionInfrasonic diagnosticsSonificationUltrasonic sensor
Method for generating a shear wave in a target region of a soft solid, includes the following steps: a) generating at least two shear waves with a first and a second source of shear waves in the target region; b) detecting a propagation pattern of the shear wave in the target region with a detector unit including a row of ultrasonic transducers aligned on a first direction perpendicular to a detection direction of each or a single ultrasonic transducer movable along a first direction perpendicular to its detection direction; c) proceeding to a time reversal of the detected propagation pattern; and d) submitting the target region to an inverted excitation set of forces based on the temporally inverted propagation pattern. During step b), a first propagation pattern is detected when only the first source is active and a second propagation pattern is detected when only the second source is active.
Owner:INST NAT DE LA SANTE & DE LA RECHERCHE MEDICALE (INSERM) +2
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