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35results about How to "Realize scanning imaging" patented technology

Rotary platform type animals in-vivo multi-mode imaging detection system

The invention relates to a biological multimode picture detecting technique, wherein it comprises one PET shooting system with symmetry electrodes, one infrared transparent (reflective) shooting system, one visual light (or fluorescent) transparent (or reflective) shooting system, one ultraviolet (or X-ray) transparent (or reflective) shooting system, one rotation carrier of animal, multi-axle motion controller, multi-channel processor and computer. The carrier comprises one object platform, one frame, one constant-temperature controller, one rotator, and one XYZ three-dimension mover. The invention has multimode composition and 360degree scanning picture, with low cost.
Owner:TSINGHUA UNIV

Scanning type metal surface imaging and component analyzing device

The invention discloses a scanning type metal surface imaging and component analyzing device. The scanning type metal surface imaging and component analyzing device comprises an X-ray tube (1), an X fluorescent probe (2), a collimator (3), a position sensitive type photomultiplier (4), a detector packaging sleeve (5), a high-pressure control system (6), an amplifier (7), a signal reading-out system (8), a data processing system (9), a computer control and data display system (10), a stepping motor control system (11), a remote logging-in system (12), a laser distance meter (13), a stepping motor (14), a sample platform (15) and a shielding protection body (16). According to the scanning type metal surface imaging and component analyzing device, X rays are generated by using the X-ray tube and characteristic X rays are generated by a reaction between the X rays and nuclide inner shell layer electrons on a metal surface; and a sensor is used for collecting space and energy information of the characteristic X rays and carrying out component analysis and imaging on the metal surface. The scanning type metal surface imaging and component analyzing device is not influenced by varieties of metal plating layers and can simultaneously realize metal surface imaging and element component analysis.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Automatic detecting and positioning device and method of laser spot focus

The invention provides an automatic detecting and positioning device of a laser spot focus. A photoelectric detector (4) of the device detects a laser spot focused by a focusing lens (13) from a spotincidence hole of a spot detecting face (5) to obtain signals, the signals are sent by a signal sending line (3) to a central processing unit (1) connected with the signal sending line, and the central processing unit (1) sends a movement instruction to an X-directional, Y-directional and Z-directional stepping motor connected with the central processing unit (1) through a signal receiving line (3) according to spot signal data changes until the spot detecting face (5) moves to the laser focus. By means of the automatic detecting and positioning device, feedback adjustment is conducted on theposition of the spot detecting face through a horizontal movement table control module, the automatic search of the position of the laser focus is realized, the precise setting of a to-be-detected sample can be realized, and the scanning and imaging of a tiny spot can be realized through a filtering image reconstruction module. The automatic detecting and positioning device is suitable for a supervacuum closed space and has the remarkable advantages of being easy to operate, flexible in measurement method, simple in system framework, low in construction cost and the like.
Owner:NAT UNIV OF DEFENSE TECH

Eddy radar defect detecting, quantifying and imaging method and system

InactiveCN104677987AEnables deep quantificationEnables B-scan imagingMaterial magnetic variablesTime domain responseSignal-to-quantization-noise ratio
The invention discloses an eddy radar defect detecting, quantifying and imaging method and system. According to the method, excitation signals in different modes such as pulse, sine, frequency modulation and phase modulation are adopted to excite a signal driving eddy sensor, and eddy can be sensed in a detected object. An output signal of the eddy sensor is taken as a time domain response signal, and the time domain response signal of an area free from defects is taken as a reference signal. A cross-correlation algorithm is applied to the time domain response signal and the reference signal, so that a cross-correlation amplitude value and phase can be obtained. Characteristic values for defect detection can be extracted from the cross-correlation amplitude value and the phase; through standard test piece experiment, a quantitative corresponding relationship of the characteristic value and the depth can be established, and quantification of the defect depth can be achieved; the cross-correlation amplitude value and the phase of each detection point on a scanning route can be displayed, and B-scanning imaging can be achieved; a scanning mechanism is adopted to detect one area, and the characteristic values are adopted for C-scanning imaging. The method and the system have the advantages of high signal to noise ratio, accurate depth quantification, good interference resistance, and the like, and can be applied to the field of nondestructive detection.
Owner:WUXI DOUBLE HORSE DRILLING TOOLS

Uncooled large area array fast scanning optical system

The invention relates to an uncooled large area array fast scanning optical system. The system achieves the clear imaging of the image and solves the problem that an image becomes virtual and trailingin the motion process of the area array fast scanning imaging system by adding a fast scanning swing mirror into the parallel optical path formed by a Keplerian telescope system, quickly scanning theswing of the swing mirror to compensate for the field angle in the motion of the imaging system, and ensuring that the target is stable in the image plane imaging position in the integration time. The system determines the configuration of the optical system by the theoretical calculation and analysis of a paraxial optical system. In addition, the system optimizes the image quality by optimizingthe lens curvature radius, lens spacing, and matching of different optical materials, and correcting the aberration of the optical system using special surface types such as an aspheric surface or a diffractive surface and the like.
Owner:LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC

Borehole inner wall ultrasonic scanning and imaging device and method

The invention provides a borehole inner wall ultrasonic scanning and imaging device, which comprises an external connection unit, a guidance pipe body and a scanning unit, wherein the external connection unit comprises a numerical control module and a wind speed regulation and control device; the numerical control module is connected with the scanning unit; the wind speed regulation and control device is provided with an air duct which is independently connected with the wind speed regulation and control device and the guidance pipe body; a magnetic pull wire is arranged between the numericalcontrol module and the scanning unit; the scanning unit comprises a scanning unit shell, wherein an ultrasonic distance measuring instrument and a scanning driving motor are arranged in the scanning unit shell; the motor shaft of the scanning driving motor is connected with a transmission shaft; the transmission shaft is connected with the ultrasonic distance measuring instrument; and the ultrasonic distance measuring instrument is provided with an ultrasonic probe. In addition, the invention also provides a scanning and imaging method for the above borehole inner wall ultrasonic scanning andimaging device. By use of the device disclosed by the invention, the three-image scanning and imaging of the borehole inner wall can be realized, a three-dimensional scanning image of a whole boreholeis obtained, and the detection of a hole collapsing position of the borehole is realized.
Owner:XIAN UNIV OF SCI & TECH

Three-dimensional laser scanning device and robot

The invention relates to a three-dimensional laser scanning device and a robot. The three-dimensional laser scanning device comprises a support assembly, a rotation driving assembly arranged above thesupport assembly, a laser sensor rotation assembly, a GPS positioning assembly arranged above the support assembly, a laser sensor arranged on the laser sensor rotation assembly and a control box assembly arranged below the support assembly, and is characterized in that the rotation driving assembly is used for driving the laser sensor rotation assembly to rotate, and the control box assembly isconnected with the rotation driving assembly and the laser sensor through a cable. According to the three-dimensional laser scanning device, scanning and imaging for a three-dimensional complex environment can be realized, and functions of robot navigation, obstacle avoidance and positioning in the complex environment are realized. In addition, the three-dimensional laser scanning device is compact in overall structure and reasonable in layout; and the support assembly, the rotation driving assembly, the laser sensor rotation assembly, the GPS positioning assembly, the laser sensor and the control box assembly can adopt the modular design.
Owner:SHENYANG SIASUN ROBOT & AUTOMATION

Grating imaging system and scanning method thereof

ActiveCN110916712AScanning imaging is fast and effectiveAvoid imaging timeTomographyDiaphragms for radiation diagnosticsRadiographyField of view
The invention discloses a grating imaging system and a scanning method thereof. The system comprises a source grating (G0), a first grating (G1) and a second grating (G2) which are sequentially arranged along a light path, at least one of the source grating (G0), the first grating (G1) and the second grating (G2) is a curved surface grating, and an imaging irradiation position is arranged betweenthe first grating (G1) and the second grating (G2). According to the system, the good image quality is kept, the overall scanning time is reduced to the level close to that of a clinical X-ray chest radiography, and meanwhile the radiation dose is well controlled. In conclusion, the large-view grating imaging system has the advantages and characteristics of large imaging view, high scanning speed,low radiation dose and the like.
Owner:TSINGHUA UNIV

Optical path multiplexing opto-acoustic-white light common-view-field endoscope device and imaging method

The invention discloses an optical path multiplexing photoacoustic-white light common-view-field endoscope device and an imaging method. The device comprises a handheld endoscope probe, a laser / optical illumination system and a control and data acquisition and reconstruction system. The handheld endoscope probe comprises a photoacoustic-white light optical path multiplexing assembly, a laser coupling scanning assembly and a photoacoustic-white light detection assembly. The laser coupling scanning assembly is used for focusing and scanning laser, and the photoacoustic-white light path multiplexing assembly is used for generating a photoacoustic signal and a white light reflection signal; the photoacoustic signal is received by the photoacoustic detection assembly, and the white light emission signal is received by the white light detection assembly. The photoacoustic excitation light path and the white light imaging light path share the same path, so that the photoacoustic imaging and the white light imaging realize common-view-field imaging with overlapped imaging centers, and therefore, optical imaging of surface light reflection information and photoacoustic imaging of deep light absorption information can be simultaneously obtained, and the imaging accuracy is improved. And dual-mode common-view-field imaging detection of white light guiding-photoacoustic microscopy is realized.
Owner:SOUTH CHINA NORMAL UNIVERSITY +1

Low-density material perspective imaging method and system

The invention discloses a low-density material perspective imaging method and system, which is used for imaging an inspection device inside a packaging body through ultrasonic wave. The inspection device comprises a first element with a first surface, a second element with a second surface, and a wire connecting the first surface and the second surface; and the first surface and the second surfaceare located in different planes, and the density of the wire is less than 5 grams per cubic centimeter. The low-density material perspective imaging method includes the steps that a first focusing parameter of the first surface and a second focusing parameter of the second surface are obtained; according to the scanning constraint conditions, scanning imaging is carried out on the inspection device, and the scanning constraint conditions are specifically generated according to the first focusing parameter and the second focusing parameter. Not only can the good imaging effect on the first andsecond surfaces be obtained, but also the low-density wire can be well reflected in imaging results; and scanning imaging of elements with low-density wires under the non-destructive condition is realized.
Owner:SHENZHEN STS MICROELECTRONICS

Rotary platform type animals in-vivo multi-mode imaging detection system

InactiveCN100450440CSolve the problem of accurate positioning technologyRealize scanning imagingImage enhancementImage analysisFluorescenceImage detection
The invention relates to a biological multimode picture detecting technique, wherein it comprises one PET shooting system with symmetry electrodes, one infrared transparent (reflective) shooting system, one visual light (or fluorescent) transparent (or reflective) shooting system, one ultraviolet (or X-ray) transparent (or reflective) shooting system, one rotation carrier of animal, multi-axle motion controller, multi-channel processor and computer. The carrier comprises one object platform, one frame, one constant-temperature controller, one rotator, and one XYZ three-dimension mover. The invention has multimode composition and 360degree scanning picture, with low cost.
Owner:TSINGHUA UNIV

Mobile magnetic resonance system

The invention provides a mobile magnetic resonance system. The mobile magnetic resonance system comprises a scanning mechanism, a conjoined cabinet, an omni-directional mobile chassis and a sickbed mechanism, wherein the scanning mechanism and the conjoined cabinet are arranged on the omni-directional moving chassis; the conjoined cabinet is arranged on one side of the scanning mechanism, and theconjoined cabinet is connected with the scanning mechanism; the scanning mechanism is provided with a cavity structure; the side wall of the scanning mechanism is provided with a first opening penetrating through the cavity structure, and the first opening is arranged towards the direction of the conjoined cabinet; and the sickbed mechanism is slidably connected in the cavity structure and on thetop wall of the conjoined cabinet. The conjoined cabinet is arranged on one side of the scanning mechanism, serves as the conjoined cabinet to support the sickbed mechanism, and also serves as a control cabinet of the scanning mechanism to save the sickbed mounting space; the scanning mechanism and the conjoined cabinet are integrally driven by the omni-directional moving chassis to move on the ground or a working surface, so that the magnetic resonance system is integrally moved to a first preset position, such as beside a patient bed, for magnetic resonance examination.
Owner:RAY PLUS MEDICAL TECH CO LTD

Device and method for improving THz-ATR imaging resolution and performance

The invention discloses a device and a method for improving THz-ATR imaging resolution and performance. According to the method, continuous terahertz waves emitted by a terahertz radiation source are converted into sine waves through a chopper, the sine waves enter a terahertz wave spectroscope and are divided into two beams, one beam is reflected light, and the other beam is transmitted light which serves as signal light for detecting sample information; the signal light sequentially passes through a first terahertz wave reflector, a first off-axis parabolic mirror, a solid immersion ATR lens, and a sample holder, the signal light generates total reflection at the sample holder-sample interface, then emits from the solid immersion ATR lens, the emitted light passes through a second off-axis parabolic mirror and a second terahertz wave reflector, and then is received by a second terahertz detector. A computer controls the sample holder to move, collects signals received by the terahertz detector and analyzes and processes data. According to the invention, the resolution of attenuated total reflection type imaging is obviously improved, the problem of small effective imaging area caused by focus offset in a traditional attenuated total reflection type system can be solved, and high-sensitivity and high-resolution terahertz imaging of a large-size sample can be obtained.
Owner:TIANJIN UNIV

Grating imaging system and scanning method thereof

The invention discloses a grating imaging system, wherein the system comprises: a source grating (G0) for converting incoherent light emitted by a light source into coherent light; a first grating (G1) formed by splicing a plurality of first grating units and used for obtaining first imaging after the coherent light passes through the first grating (G1); and a second grating (G2) formed by splicing a plurality of second grating units and used for operating the first imaging to obtain second imaging, wherein an imaging irradiation site is arranged between the first grating (G1) and the second grating (G2), and the source grating (G0), the first grating (G1) and the second grating (G2) form an optical path to form the system. The system allows the whole scanning time to be reduced to a levelclose to that of a clinical X-ray chest film while good image quality is maintained, and the radiation dose is well controlled; in summary, the large-field grating imaging system has the advantages of large imaging field, high scanning speed, low radiation dose and the like.
Owner:TSINGHUA UNIV

Movable CT device for radiology department

The invention discloses a movable CT device for the radiology department, and relates to the field of CT equipment, in particular to the movable CT device for the radiology department; the device comprises a scanning frame and a ray scanning slit; supports are connected to the lower ends of the two sides of the scanning frame, a base is fixed to the lower ends of the supports, and a control panel is installed at the front end of the scanning frame. An anti-interference wireless transmitter is embedded in the upper end of one side of the scanning frame; and the ray scanning slit is formed in the inner side of the scanning frame. The movable CT device for the radiology department is provided with a third motor which drives a specially-shaped gear meshed with a rotating gear, so that a bed frame fixedly connected with the specially-shaped gear drives the scanning bed to stand up, a patient can walk on a pedal and stand well during examination. And along with rotation of the third motor, the scanning bed is slowly laid flat, and the patient can lie on the scanning bed for CT examination without bending down, so that convenience is provided for examination of part of patients difficult to move, and the examination comfort is improved.
Owner:成都市第三人民医院

Optical lens and optical apparatus

An optical lens and optical apparatus are disclosed. The optical lens comprises a first lens group, a second lens group and an imaging sensor in sequence from an object side to an imaging side along an optical axis, and further comprises a light splitting element arranged between the first lens group and the imaging sensor, the first lens group is used for collimating light after a to-be-measuredobject plane enters the lens, the first lens group comprises a front lens group and a rear lens group, the front lens group has negative diopter, the rear lens group has positive diopter, the second lens group comprises a lens group with a symmetrical double-gluing structure, and the light splitting element and the second lens group are used for imaging collimated light rays on the imaging sensoraccording to different wave bands. The optical lens is compact and small in size, can be applied to a hyperspectral imaging and detection camera, and has very high practicability.
Owner:SHEN ZHEN HYPERNANO OPTICS TECH CO LTD

Raster imaging system and its scanning method

The invention discloses a grating imaging system and a scanning method thereof. The system includes a source grating (G0), a first grating (G1) and a second grating (G2) arranged in sequence along an optical path, wherein: the source grating (G0), the second grating At least one of the first grating (G1) and the second grating (G2) is a curved grating, and an imaging irradiation position is set between the first grating (G1) and the second grating (G2). While maintaining good image quality, the overall scanning time is reduced to a level close to that of clinical X-ray chest films, and the radiation dose is well controlled; in general, the large-field raster imaging system has a large imaging field of view. , fast scanning speed, low radiation dose and other advantages and characteristics.
Owner:TSINGHUA UNIV

Photoacoustic endoscopic imaging device and photoacoustic endoscopic imaging method based on same

The invention relates to the technical field of medical instruments, and discloses a photoacoustic endoscopic imaging device and a photoacoustic endoscopic imaging method based on the same. The photoacoustic endoscopic imaging device comprises a first shell, an off-axis mirror, an ultrasonic transducer, a supporting piece and an optical fiber; the supporting piece is arranged on the first end of the first shell, the off-axis mirror is arranged on the second end of the first shell, and a signal window is formed in the wall face of the first shell; the optical fiber is installed on the supporting piece; the supporting piece is provided with an transducer installation groove, and the ultrasonic transducer is arranged in the transducer installation groove. By utilizing the natural advantage ofthe reflective focusing imaging system without chromatic aberration, the problem that the focus of a light beam deviates under different wavelengths is solved, and the resolution of photoacoustic imaging is improved, so that a more accurate functional information resolving result can be obtained; the device integrates light beam reflection and focusing functions into one element, the size of thefront end of the probe can be remarkably reduced, and the moving posture flexibility of the imaging catheter is improved.
Owner:SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI

In-vivo multi-mode imaging detecting system with resolution being at least 50 mu m

The invention discloses a multi-mode in-vivo imaging system with resolution being at least 50 mu m. The multi-mode in-vivo imaging system belongs to the technical field of in-vivo detection and is characterized in that the system comprises a polyethylene terephthalate (PET) radio nuclide imaging unit, an X-ray imaging unit, a computed tomography (CT) imaging unit, a rotary carrying platform for placing a test sample, a multi-axle motion controller, a multi-channel signal collecting processor, a computer connected with the multi-axle motion controller and the multi-channel signal collecting processor, and an image processing display software for fusing in-vivo imaging by multi-mode means. Compared with other international in-vivo imaging detecting instruments, the in-vivo multi-mode imaging detecting system has the characteristics of high resolution, multi-mode fusion, panoramic scanning imaging within 360 degrees and the like, and is smart in structure and low in cost; the imaging detecting system can be widely used in in-vivo imaging application including human medical imaging and small animal molecular imaging detection.
Owner:TSINGHUA UNIV

A Dynamic Acquisition System of Document Information Based on Scanning and Imaging

The invention provides a file information dynamic acquisition system based on scanning imaging. The file information dynamic acquisition system comprises a workbench, a differential paging mechanism,a first conveying roller set, a second conveying roller set, an imaging device, a plurality of correlation photoelectric sensors and a pair of light sources. A first conveying roller set and a secondconveying roller set are arranged at the tail end of the differential paging mechanism. wherein the first conveying roller set and the second conveying roller set synchronously operate and move in opposite directions, the second conveying roller set is arranged discontinuously, an imaging device is arranged on the side face of the discontinuity of the second conveying roller set, and a lens of theimaging device directly faces the center of the discontinuity of the second conveying roller set. The differential paging mechanism disclosed by the invention can automatically complete file adsorption, differential paging and clamping conveying, can automatically detect whether a file is in place or not and timely send out a working instruction to the imaging device, the imaging device scans thefile through the intermittent position of the second conveying roller set, the light source can achieve the light supplementing effect, and the scanning imaging quality of the imaging device is improved.
Owner:武汉恒新动力科技有限公司

Grating imaging system and scanning method thereof

ActiveCN110916713AScanning imaging is fast and effectiveAvoid imaging timeTomographyDiaphragms for radiation diagnosticsGratingRadiology
The invention discloses an optical grating imaging system. The system includes a source optical grating (G0), a first optical grating (G1) and a second optical grating (G2) arranged in sequence alongan optical path, wherein the first optical grating (G1) includes a plurality of first optical grating units spliced with one another in a dislocation manner, and / or the second optical grating (G2) includes a plurality of second optical grating units spliced with one another in a dislocation manner. A large-area optical grating formed by dislocation splicing can complete imaging by only one scanning in the actual scanning imaging process, the scanning speed is faster, and the scanning efficiency is further improved; and the large-view field optical grating imaging system has the advantages andcharacteristics of a large imaging field of view, a fast scanning speed and a low radiation dose.
Owner:TSINGHUA UNIV

Mobile magnetic resonance system

The invention provides a mobile magnetic resonance system. The mobile magnetic resonance system comprises a scanning mechanism, a conjoined cabinet, a mobile chassis and a sickbed mechanism. The scanning mechanism and the conjoined cabinet are arranged on the mobile chassis. The conjoined cabinet is connected with the scanning mechanism. The scanning mechanism is provided with a cavity structure, and a first opening penetrating through the cavity structure is arranged on the side wall of the scanning mechanism. The sickbed mechanism can slide relative to the scanning mechanism and the conjoined cabinet. According to the present invention, the movable chassis drives the scanning mechanism and the conjoined cabinet to integrally move on the ground or a working surface, so that the magnetic resonance system integrally moves to a first preset position, such as the bedside of a patient for magnetic resonance examination. The magnetic resonance system can easily and freely move by setting the movable chassis, thereby improving flexibility of the magnetic resonance system in used space, so that the magnetic resonance system can move to a position where a subject to be tested is located.
Owner:RAY PLUS MEDICAL TECH CO LTD

A scanning metal surface imaging and component analysis device

The invention discloses a scanning type metal surface imaging and component analyzing device. The scanning type metal surface imaging and component analyzing device comprises an X-ray tube (1), an X fluorescent probe (2), a collimator (3), a position sensitive type photomultiplier (4), a detector packaging sleeve (5), a high-pressure control system (6), an amplifier (7), a signal reading-out system (8), a data processing system (9), a computer control and data display system (10), a stepping motor control system (11), a remote logging-in system (12), a laser distance meter (13), a stepping motor (14), a sample platform (15) and a shielding protection body (16). According to the scanning type metal surface imaging and component analyzing device, X rays are generated by using the X-ray tube and characteristic X rays are generated by a reaction between the X rays and nuclide inner shell layer electrons on a metal surface; and a sensor is used for collecting space and energy information of the characteristic X rays and carrying out component analysis and imaging on the metal surface. The scanning type metal surface imaging and component analyzing device is not influenced by varieties of metal plating layers and can simultaneously realize metal surface imaging and element component analysis.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Micro optical conduit

The invention discloses a micro optical conduit used for diagnosis of glaucoma. The micro optical conduit comprises a conduit internal structure part and a conduit housing. The conduit housing comprises an optical rotary terminal connecting handle, a protection cap, a near-end conduit, a far-end conduit, and a superfine usage end connected in sequence. The protection cap is screwed on the optical rotary terminal connecting handle. The optical rotary terminal connecting handle is used to connect with an image system. The near-end conduit and the far-end conduit are connected through a joint. The superfine usage end comprises a usage end handle, a first connection pipe, and a superfine connection pipe connected in sequence. The head end of the superfine connection pipe is used as the head end imaging part of the micro optical conduit. The conduit internal structure comprises an optical connecting terminal, a torque output cable, a torque transmission cable, and an optical imaging probe connected in sequence. The optical imaging probe is in the head end imaging part. The optical connecting terminal is in the optical rotary terminal connecting handle. The near-end conduit and the far-end conduit are respectively protection sleeves of the torque output cable and the torque transmission cable.
Owner:BEIJING TONGREN HOSPITAL AFFILIATED TO CAPITAL MEDICAL UNIV +1

An uncooled large area array fast-scanning optical system

The invention relates to an uncooled large area array fast scanning optical system. The system achieves the clear imaging of the image and solves the problem that an image becomes virtual and trailingin the motion process of the area array fast scanning imaging system by adding a fast scanning swing mirror into the parallel optical path formed by a Keplerian telescope system, quickly scanning theswing of the swing mirror to compensate for the field angle in the motion of the imaging system, and ensuring that the target is stable in the image plane imaging position in the integration time. The system determines the configuration of the optical system by the theoretical calculation and analysis of a paraxial optical system. In addition, the system optimizes the image quality by optimizingthe lens curvature radius, lens spacing, and matching of different optical materials, and correcting the aberration of the optical system using special surface types such as an aspheric surface or a diffractive surface and the like.
Owner:LUOYANG INST OF ELECTRO OPTICAL EQUIP OF AVIC

An eddy current radar defect detection, quantification and imaging method and system

InactiveCN104677987BEnables deep quantificationEnables B-scan imagingMaterial magnetic variablesPhase responseCurrent sensor
The invention discloses an eddy current radar defect detection, quantification and imaging method and system. The system uses excitation signals of different modes such as pulse, sine, frequency modulation, and modulation to drive the eddy current sensor, and induce eddy current in the detected object. The output signal of the eddy current sensor is used as the time domain response signal, and the time domain response signal of the defect-free area is used as the reference signal. The cross-correlation algorithm is implemented on the time-domain response signal and the reference signal to obtain the cross-correlation amplitude and phase. Extract the eigenvalues ​​from the cross-correlation amplitude and phase for defect detection; establish the quantitative correspondence between the eigenvalues ​​and the depth through the standard specimen test, and realize the quantification of the defect depth; display the cross-correlation amplitude of each detection point on the scanning path value and phase for B-scan imaging; with the help of a scanning mechanism to detect a certain area, use eigenvalues ​​for C-scan imaging. The method and system have the advantages of high signal-to-noise ratio, accurate depth quantification, good anti-interference performance and the like, and can be applied in the field of non-destructive testing.
Owner:WUXI DOUBLE HORSE DRILLING TOOLS

Low-density material perspective imaging method and system

The invention discloses a low-density material perspective imaging method and system, which are used for imaging a viewing device in a package by ultrasonic waves. The viewing device includes a first element with a first surface, a second element with a second surface, and a connecting A wire on a surface and a second surface; the first surface and the second surface are located on different planes, and the wire is a wire with a density of less than 5 grams per cubic centimeter; the method includes: acquiring a first focusing parameter of the first surface, and acquiring a first The second focusing parameters of the two surfaces; the inspection device is scanned and imaged according to the scanning constraints, and the scanning constraints are specifically generated according to the first focusing parameters and the second focusing parameters. It can not only obtain good imaging effects on the first surface and the second surface, but also better reflect the low-density wires in the imaging results; realize the scanning of components with low-density wires under non-destructive conditions imaging.
Owner:SHENZHEN STS MICROELECTRONICS CO LTD
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