98 results about "Ultrasonic beam" patented technology

The invention discloses a nondestructive testing method for a welding seam of a steel structure. The method comprises the steps that firstly, morphology data of the surface of a building steel structure are obtained through a high-precision laser scanner and an electromagnetic induction technology; coating thickness distribution and weld surface roughness are analyzed based on the morphology data, and a surface information matrix is constructed; then automatically adjusting ultrasonic wave beam parameters of the ultrasonic phased array by using the adaptive parameter regulation and control model and executing detection to obtain a preliminary ultrasonic echo signal; the time-frequency domain difference between the preliminary echo and the reference signal is calculated through an echo signal compensation model, and secondary compensation is completed to obtain an optimized ultrasonic echo signal; fusing the optimized echo signal, the morphology data and the surface information matrix to construct a detection data set, and adopting a pre-trained steel structure detection model to realize defect detection; and finally, evaluating the confidence of a detection result by adopting a three-dimensional confidence evaluation model, performing grading, and performing local re-detection and parameter adjustment on a low-confidence region to form closed-loop optimization. According to the method, the surface state of the steel structure can be adaptively matched, the accuracy of echo signals and the defect detection precision are improved, and the detection reliability is guaranteed through three-dimensional confidence evaluation.

The invention relates to the technical field of cast-in-place pile detection, and discloses a cast-in-place pile integrity detection system based on a multi-mode ultrasonic array, and the system comprises a deformable multi-mode ultrasonic probe which is used for adaptively adjusting the posture through an intelligent material driver; the intelligent coupling injection module is used for automatically cleaning the inner wall of an internal channel of the cast-in-place pile; the multi-source data processing module is used for receiving the original ultrasonic waveform data and the real-time position information of the ultrasonic probe; the deep learning recognition module is used for generating a recognition result including defect categories and preliminary features; the defect positioning and evaluating module is used for constructing a defect model comprising defect space coordinates, geometric dimensions and severity parameters; and the diagnosis decision module is used for providing targeted repair suggestions. The ultrasonic signals are transmitted and received through the integrated longitudinal wave transducer, the transverse wave transducer and the Rayleigh wave transducer, the internal structure information of the pile body is obtained, in this way, the ultrasonic beam coverage range is expanded, and the detection blind area of the area between the sounding pipes in a traditional method is effectively made up.

The invention discloses a marine pipeline leakage point and oil leakage accurate detection system and method, a focused ultrasonic detection module of the system emits ultrasonic focused sound beams to a pipeline wall, a signal acquisition and analysis module is used for receiving an ultrasonic echo signal and performing feature extraction, a fluid noise elimination and compensation module filters and corrects the signal, and a detection module is used for detecting the leakage point and oil leakage of a marine pipeline. The sensor array attached to the pipe wall can monitor the temperature, pressure and environment change of the marine pipeline in real time, the control and feedback unit automatically adjusts the focus depth and acoustic beam energy according to an analysis result, fine scanning and enhanced detection of a target area are achieved, and finally leakage point space coordinates and leakage rate estimated values are output. The system can stably operate for a long time in a high-noise and high-pressure marine environment, is high in detection sensitivity and strong in anti-interference capability, can achieve millimeter-level leakage point positioning precision, and is suitable for online health monitoring and intelligent safety management of marine oil and gas conveying pipelines, offshore wind power cooling systems and deep sea energy channels.

The invention provides a method and a system for accurately regulating and controlling waste gas denitration air quantity of a glass melting furnace. According to the method, an ultrasonic Doppler sensor group is arranged around a glass melting furnace flue, ultrasonic beams are synchronously emitted to collect flow velocity pulsation data required by exhaust gas denitration air volume, time sequence waveforms are decomposed to generate multi-dimensional frequency characteristics, and the multi-dimensional frequency characteristics are aggregated into a multi-dimensional flow velocity vector representing a flow field state; vector deviation is synchronously corrected through space coordinate alignment and a time sequence, and difference variable quantity is extracted and fused to generate a flow field thermodynamic diagram; establishing a time-space correlation model of the multi-dimensional flow velocity vector and the thermodynamic diagram, predicting an air volume adjusting threshold value meeting the denitration requirement, and converting the air volume adjusting threshold value into a fan rotating speed control signal to drive an execution mechanism; and according to waste gas pulsation response data caused by fan rotating speed change and thermodynamic diagram updating frequency relevance, multi-dimensional flow velocity vectors are dynamically adjusted to form closed-loop regulation and control. According to the application, the dynamic demand of the denitration air volume and the millisecond-level closed-loop response executed by the fan are realized, the flue gas purification efficiency is improved, and the energy consumption is reduced.

The invention discloses an ultrasonic detection method for a composite material structure, and the method is a layered detection imaging method based on transmission ultrasound time reversal adaptive focusing, and comprises the steps: arranging phased arrays at two sides of a standard component and a to-be-detected large-thickness variable cross-section composite material structure; a direct contact method is adopted, prior material properties of a tested piece do not need to be input, and deflection of an ultrasonic beam is regulated and controlled by time delay excitation, so that ultrasonic imaging distortion caused by a complex fiber trend can be effectively avoided, and detection imaging of layering defects of a large-thickness variable-cross-section composite material structure is realized.

The present application provides an ultrasonic diagnostic apparatus, a control method of an ultrasonic diagnostic apparatus, a recording medium, and a computer program product. The present application is directed to accepting designation of a two-dimensional position on an ultrasonic image and being able to control the ultrasonic diagnostic apparatus in accordance with the designated position. A display section (118) accepts designation of a point on a displayed ultrasonic image through a touch operation or the like. A position information conversion section (130) converts coordinates of the point shown in a coordinate system of the ultrasonic image into coordinates in a coordinate system used by the ultrasonic diagnostic apparatus (100) in ultrasonic beam scanning. A central control section (120) and a control position setting section (132) use the coordinates obtained through the coordinate conversion to perform control of the ultrasonic diagnostic apparatus (100) (e.g., setting of a ROI).

The invention provides an optic nerve regulation and control system based on an ultrasonic technology, a first ultrasonic module is deployed on the outer side of a target human eyelid and is provided with an Archimedes spiral type first ultrasonic array facing the human eye, and the first ultrasonic array is configured to generate a gathered ultrasonic beam which acts on a human eye retina ganglion cell area in a targeted manner; the positioning module is deployed on the outer side of a target human eyelid and is configured to measure three-dimensional geometric data when a human eyeball horizontally faces the front and measure the depth distance of a human eye retina ganglion cell area in the human eye; the optic nerve response prediction module is pre-trained with an optic nerve response prediction model facing a target human body, and the optic nerve response prediction model is configured to adjust sound intensity output of the first ultrasonic array based on stimulation feedback prediction of human eye retina ganglion cells. According to the invention, the optic nerve regulation and control system satisfies non-intrusive, high-precision and self-adaptive requirements, and has optic nerve regulation and control and repair functions.

The utility model belongs to the field of pest prevention and control, and particularly relates to a pest vibration repelling type protection device which comprises a rack, a lower mounting frame, an upper mounting frame, fastening screws and the like, the lower mounting frame is rotatably connected to the upper portion of the rack, and the upper mounting frame is slidably connected to the lower mounting frame. And the upper mounting frame is fixed on the lower mounting frame through two fastening screws which are symmetrically distributed. By arranging the ultrasonic bird repeller, ultrasonic wave beams with specific frequency can be emitted, discomfort of birds is effectively caused, a repelling effect is generated, meanwhile, by combining the use of the laser bird repeller, high-intensity laser rays can deeply interfere with visual perception of the birds, the repelling effect is further enhanced, and through cooperative operation of the ultrasonic bird repeller and the laser bird repeller, the bird repelling effect is improved. A comprehensive bird repelling solution is constructed, the repelling efficiency is improved, the bird adaptation possibility is reduced, and compared with a traditional bird repelling device depending on a single technology, the bird repelling device has obvious superiority.

A scanning measuring device (1) of an ultrasonic examination apparatus (Z) comprises a transmission probe (110) and a reception probe (121) installed on an opposite side of the transmission probe (110) with respect to an examination object, wherein the transmission probe (110) emits the ultrasonic beam by applying a voltage waveform of a repetitive wave packet comprising a wave packet with a wave number of 2 or more thereto, the scanning measuring device drives the transmission probe (110) at an excitation frequency higher than a resonance frequency of the transmission probe (110), the control device 2 comprises a signal processing unit (250), the signal processing unit (250) comprises a filter unit (240) which reduces at least a maximum intensity frequency component of a reception signal of the reception probe (121), and the filter unit (240) has a peripheral frequency component,which is a component other than the maximum intensity frequency component, in a fundamental wave range that includes the maximum intensity frequency component.,

Disclosed herein are ultrasonic transducer systems comprising: an ultrasonic imager comprising a plurality of pMUT transducer elements; and one or more circuitries connected electronically to the plurality of transducer element, the one or more circuitries configured to enable: pulse transmission and reception of reflected signal for the ultrasonic transducer; and control of the ultrasonic transducer, the control of the ultrasonic transducer comprising focusing ultrasonic beam in an elevation direction.

This application discloses a planar scanning-based immersion battery thermal runaway identification device and method, relating to the field of battery energy storage safety monitoring technology. The device consists of a fully enclosed immersion tank, immersion liquid, ultrasonic phased array sensors located at the corners of the inner wall of the tank, and a signal processing module. The sensors are installed below the liquid surface and above the individual battery cells, emitting fan-shaped ultrasonic beams to form a horizontal logical scanning plane covering the entire diagonal length of the bottom surface of the module. This identification method employs active scanning and physical feature extraction logic: first, an environmental acoustic impedance reference spectrum is established using phased array beams; then, echo changes within the scanning plane are monitored in real time. This invention effectively eliminates the interference of battery bulging and mechanical vibration on traditional monitoring methods, achieving refined characterization and centimeter-level precise positioning of the gas-generating physical characteristics during the thermal runaway evolution process, significantly improving the intelligent safety level of immersion energy storage systems.

The invention provides an ultrasound diagnosis assistance apparatus and a recording medium. The present invention addresses the problem of enabling a user to easily grasp a region in which an ultrasonic beam has been scanned and a region in which an ultrasonic beam has not been scanned in a target tissue of a subject. The three-dimensional model forming unit acquires a three-dimensional model of the target tissue represented by the coordinates in the model coordinate system at each position. The probe position and orientation detection unit acquires the position and orientation of the ultrasonic probe. The position and orientation information conversion unit converts position and orientation information indicating the position and orientation of the ultrasonic probe into converted position and orientation information in the model coordinate system. The scanned region specifying unit specifies a model scanning surface in the model coordinate system on the basis of the converted position and orientation information when the ultrasound beam is scanned on the target tissue, and specifies, as a scanned region, a region of the three-dimensional model through which the model scanning surface passes. The display control unit displays the scanned area and the non-scanned area in the three-dimensional model in different display modes.

A rolling probe unit for ultrasonic inspection of railway tracks utilizes a wheel assembly comprising a fluid-filled tire that rolls along the track. During inspection, an ultrasonic transducer transmits an ultrasonic beam through the fluid and tire into the underlying track. The beam, reflected from track defects, returns to the transducer for detection and analysis for subsequent maintenance. The wheel assembly also includes an anti-rotation baffle to reduce fluid rotation with the tire and a pressure regulator to control the fluid pressure within the tire at various speeds.

The invention relates to an efficient and long-life inorganic dry powder coating with a self-humidifying function and a preparation method thereof, and belongs to the technical field of inorganic coatings. The inorganic dry powder coating comprises the following components in parts by weight: 30-40% of potassium silicate, 10% of expanded perlite, 10-25% of high-activity sepiolite nanofiber, 10% of calcined shell powder, 18-28% of quartz sand and 2-3% of an auxiliary agent. The preparation method comprises the following steps: firstly, treating a sepiolite raw material by virtue of a synergistic process of ultrasonic beam splitting and citric acid activation, so as to obtain high-activity sepiolite nanofibers which are fully dissociated, have nano hierarchical pore channels and are rich in hydrophilic groups; and compounding the high-activity sepiolite nanofiber with calcined shell powder, expanded perlite, quartz sand and potassium silicate to synergistically construct an inorganic coating system with optimized microstructure and efficient moisture absorption / liberation performance. The coating is simple in preparation process and environment-friendly, has excellent mechanical properties and self-humidity-regulating performance, still keeps an efficient humidity-regulating effect in a long-term service environment, and has outstanding long-acting stability.

The invention relates to the technical field of laser processing, and discloses a method for detecting the width of a kerf in laser cutting, which comprises the following steps: controlling a phased array transducer to emit an ultrasonic beam, and enabling the ultrasonic beam to be coupled into an auxiliary gas flow coaxial with the laser beam; the auxiliary gas flow is used as an acoustic waveguide, and an ultrasonic beam is guided into the kerf of the workpiece; the phased array transducer receives an ultrasonic echo signal reflected by the inner wall of the kerf; and the control and data processing unit processes the echo signal and determines the width of the kerf according to the flight time of the ultrasonic wave. Global scanning and local focusing of the ultrasonic beam are further achieved through the phased array technology, the determined kerf width can be compared with a preset target value, and closed-loop control is conducted on laser cutting process parameters. According to the invention, high-precision and non-contact on-line measurement of the width of the narrow kerf can be realized, and the quality and consistency of laser cutting are effectively improved.

This invention belongs to the field of physical testing, specifically relating to an automated detection system for surface defects on a 3D sensor protective film. The system includes an acoustic-thermal excitation device, a thermal imaging sensing unit, an optical coherence tomography (OCT) scanning device, and a data processing and analysis terminal. The acoustic-thermal excitation device emits a focused ultrasonic beam onto the protective film surface to generate an acoustic-thermal effect; the thermal imaging sensing unit captures the spatiotemporal attenuation characteristics of the surface temperature field and generates a two-dimensional thermal diffusion feature map; the OCT scanning device adaptively acquires a three-dimensional structural cross-sectional image of the protective film based on the hotspot location; the data processing and analysis terminal performs spatial alignment and pixel-level fusion of multimodal data, and uses a deep neural network to identify defects. Through the above technical solution, this invention achieves non-contact, non-destructive, high-precision detection, balancing detection efficiency and accuracy. It can accurately identify deep, minute defects under complex coatings and predict the impact of defects on optical performance.

The present invention relates to an apparatus and method for aggregating and manipulating nanomaterials using high-frequency ultrasonic single-beam acoustic tweezers (SBATs), which enable aggregation and manipulation control of nano-sized fine materials by using single-beam acoustic tweezers for irradiating single-beam acoustics by using an ultrasonic transducer. The apparatus comprises: an ultrasonic sensor control unit for performing tilt adjustment such that the ultrasonic sensor is parallel to the bottom of a petri dish, performing position adjustment such that the focus of the ultrasonic sensor coincides with the focus of a microscope and the bottom of the petri dish, and providing a signal to the ultrasonic sensor; and a nanomaterial aggregation manipulation unit for controlling and manipulating the nanomaterials by using single-beam acoustic tweezers, by irradiating ultrasonic beams to the nanomaterials of the petri dish.

The invention discloses an ultrasonic self-adaptive scanning method and system for EIT dynamic path planning, and belongs to the technical field of medical imaging. Reconstructing an impedance distribution image in real time based on EIT and detecting an abnormal region; the coordinates of the abnormal area are mapped to an ultrasonic coordinate system, and breathing phase compensation is carried out; planning an ultrasonic beam scanning path according to clinical constraint conditions; controlling the ultrasonic beam to scan along the planned path; performing image analysis on the scanning area; and updating system parameters according to an analysis result. According to the method, abnormal coordinates detected by EIT are accurately converted into an ultrasonic beam deflection angle, clinical constraint path planning of a high-cost area of a rib shielding area and breathing phase dynamic compensation taking end expiratory as a benchmark are combined, so that the system realizes full-closed-loop control from abnormal sensing, path planning to beam execution, and the accuracy of the system is improved. The problems of scanning failure caused by rib shielding and coordinate drifting caused by respiratory movement in clinic are effectively solved, and the reliability of dynamic monitoring of the thoracic cavity is remarkably improved.

The invention relates to the technical field of focused ultrasound treatment, in particular to a real-time feedback phased array focused ultrasound treatment system, which comprises the following steps of: 1, fixing integrated equipment of ultrasonic transducers and EIT electrodes which are alternately and annularly arranged on a head, acquiring a three-dimensional image of the head by using imaging technologies such as CT or MRI and the like, and marking the spatial positions of the electrode, the ultrasonic array and the treatment target spot on the image. According to the invention, brain region real-time three-dimensional electrical impedance imaging is used as feedback, the excitation time sequence, intensity and phase of the ultrasonic array are adaptively adjusted, the influence of skull structure difference on ultrasonic focusing can be effectively overcome, the system calculates the phase shift of the ultrasonic array in real time, it is ensured that an ultrasonic beam is accurately focused at a treatment target, and the treatment accuracy is improved. The device is particularly suitable for a patient with a complex skull structure, the treatment accuracy is improved, it is ensured that ultrasonic energy accurately acts on a lesion area, and damage to surrounding healthy tissue is avoided.

An ICE imaging system is disclosed that includes an intracardiac echocardiography (ICE) catheter having a longitudinal axis, a proximal end, and a distal end. The ICE catheter corresponds to a micro-electro-mechanical (MEMS) or other transducer-based phased array ultrasound catheter with an outer diameter of 6 French or less for delivery through the internal jugular vein, subclavian vein, axillary vein, unknown vein system to the heart chamber for lead placement for pacemaker or other implantable cardioverter defibrillator (ICD) devices. Further, the catheter shaft accommodates an electronic flexible cable in communication with the at least one signal trace and configured to direct the plurality of transducer array elements to transmit and receive an ultrasound beam, receive at least one signal from the plurality of transducer array elements, and transmit the ultrasound beam to the catheter shaft. And constructing at least one image of at least a portion of the heart based on the at least one signal.

The invention relates to the technical field of metal material processing, and discloses a preparation method of a copper-silver alloy for a high-strength and high-conductivity new energy wire harness, which comprises the following steps: inhibiting segregation caused by copper-silver density difference and refining grains by using a rotating traveling wave magnetic field and a high-energy ultrasonic beam through magneto-acoustic double-field coupling rheological continuous casting. And then under a cryogenic environment, special modified polysiloxane-graphene hybrid conductive gel is matched for large-strain drawing, the gel keeps semi-solid lubrication at a low temperature, and a conductive channel is established. And finally, establishing an axial temperature gradient by utilizing the temperature difference between the cryogenic state of the wire rod and the contact electrode area, and applying a unipolar electric pulse to trigger the Thomson effect. According to the process, a Thomson heat flow item is used for correcting a Joule thermal field, and electron wind power is used for driving silver atoms to be directionally separated out along high-density dislocation while overheating softening of a copper matrix is restrained. The method effectively solves the problem that the strength conductivity is inverted due to solidification segregation and traditional heat treatment, and the comprehensive performance of the copper-silver alloy is synchronously improved.

The invention discloses an electromagnetic ultrasonic method, device and system for realizing regional C-type scanning thickness measurement, and relates to the technical field of industrial detection, and the method comprises the steps: obtaining the surface curvature information of a to-be-measured object; dynamically adjusting the incident angle and the signal gain of the ultrasonic beam based on the corresponding surface curvature information, and setting the thickness corrosion value and the thickness reference value of the to-be-measured object; based on the incident angle and the signal gain of the ultrasonic beam, acquiring an echo signal of each cell in a grid sticker in a detection area of the object to be detected; the grid paster is pasted on the surface of an object to be detected; the grid stickers correspond to a plurality of cells; generating a plurality of pieces of thickness data based on the echo signal of each cell; and mapping the plurality of thickness data into a pixel value image, and carrying out thermodynamic diagram fusion projection to obtain a thickness thermodynamic distribution diagram of the detection area of the to-be-detected object. According to the invention, thickness scanning and visual display of the detection area can be realized.

An ultrasound imaging and backscatter system includes an ICE ultrasound catheter having an ultrasound pMUT transducer array disposed within a distal end of the ultrasound catheter and including a plurality of transducer array elements disposed on a substrate. One end of the catheter shaft is connected to the handle assembly and the other end is connected to the ultrasonic transducer array. The catheter shaft accommodates an electronic flexible cable in communication with the signal trace and directs each of the plurality of transducer array elements to transmit and receive an ultrasound beam, receives at least one signal from the plurality of transducer array elements, and constructs at least one image characterizing one or more tissue components of the scanned object. An ultrasound imaging system is used to measure tissue thickness, tissue scar, and lesion assessment for left atrium, right atrium, left ventricle, and right ventricle tissue wall characteristics and other intracardiac tissue anomalies.

The application discloses a kind of grain map neural network's weld ultrasonic beam path correction method, it is related to the field of welding structure nondestructive testing, by obtaining the EBSD data of weld area, extract grain orientation, grain boundary type and spatial distribution characteristics, construct grain map structure, and calculate initial propagation time weight based on anisotropic sound velocity model;Using graph neural network to learn end to end for grain node and grain boundary edge features, output corrected edge propagation time weight;The time of flight from element to imaging pixel is obtained by shortest path search, and the time of flight predicted by neural network surrogate model is fused and corrected;Finally, the corrected time of flight is used to perform full focus imaging, and the weld defect image after optimizing the beam path is obtained.The method combines material microstructure characteristics and machine learning model, solves the problem that the beam path description is not fine enough in existing weld ultrasonic testing, significantly improves the accuracy and reliability of defect detection.

A system (1) for characterizing tissue comprises: a probe for transmitting continuous and periodic mechanical vibrations (PMV) to tissue (51) of a subject; an ultrasonic transmitter for transmitting a sequence of ultrasonic beams (80, 80', 80") and an ultrasonic receiver for receiving corresponding echo signals to track how the tissue moves due to the periodic mechanical vibrations transmitted to the tissue; and a control module programmed to provide homogeneity information (808, 808', 808") to an operator of the system, the homogeneity information being determined based on at least some of the echo signals and representing the ability of the tissue to transmit elastic waves and the homogeneity of the tissue with respect to elastic wave propagation. A method for characterizing tissue is also provided.

The application discloses a kind of steel plate side edge detection devices;Including the transverse movement of movable support, the downside of the movable support is provided with flaw detection mechanism, the flaw detection mechanism includes the flaw detection probe of inclined arrangement, the flaw detection probe is connected with controller, the flaw detection probe is under the control of the controller and synthesis generates the synthesis ultrasonic beam required for flaw detection, and based on the synthesis ultrasonic beam realizes the side edge of the steel plate and carries out automatic flaw detection.The present application is driven by roller to move longitudinally, steel plate is provided with steel plate side edge detection device on both sides, when steel plate moves longitudinally, steel plate side edge detection device on both sides of steel plate detects two side edges of steel plate respectively, so as to greatly improve the efficiency and accuracy of steel plate side edge detection.

An aerosol delivery device (500) comprising: a controller (520); and a noise generator (580) comprising one or more ultrasonic transducers, the noise generator (580) being controllable by the controller (520) and being configured to generate an ultrasonic beam directed towards an intended position of a user of the aerosol supply device (500) such that an audible deterrent noise is generated at the intended position.

An ultrasonic diagnostic apparatus includes an ultrasonic probe, an image generation section which generates an ultrasonic image which photographs a breast of a subject by using transmission and reception of an ultrasonic beam to the subject using the ultrasonic probe, a schematic image generation section which generates a schematic image which draws a region of interest on the basis of a composite two-dimensional image which is generated using a series of radiographic images which are obtained by tomography and which photograph the breast of the subject, information of a tomographic image which is attached to the composite two-dimensional image and which corresponds to the region of interest on the composite two-dimensional image, and information of the region of interest, and a monitor which displays the ultrasonic image, the composite two-dimensional image, and the schematic image.

Embodiments relate to devices, systems, and methods for creating highly localized, remote audible zones or noise control zones by utilizing nonlinear interactions of ultrasonic beams. Ultrasonic sources may produce inaudible, straight or curved trajectories that can bypass obstacles, such as human heads or barriers or follow direct paths in open space. When intersecting at a designated target zone, the nonlinear acoustic interaction generates an audible difference-frequency wave within the human audible range, delivering targeted sound content without disturbing surrounding areas. Alternatively, the ultrasonic sources may produce beams to control and / or cancel audible content in a designated zone. These approaches enable precise, scalable, and obstacle-agnostic spatial audio and noise control with broad bandwidth, compact size, and high robustness even in reverberant environments, expanding possibilities in private communication, immersive audio, sound masking, and environmental noise mitigation.

The application discloses a fine sound beam ultrasonic probe and a design method, and relates to the technical field of nondestructive testing. The probe comprises a probe connector, a probe shell, a cable, a piezoelectric element and a combined acoustic lens. The cable is connected between the probe connector and the piezoelectric element capable of emitting and receiving ultrasonic waves, and is used for conducting high-frequency alternating electric pulses to the piezoelectric element. The combined acoustic lens is installed at the bottom of the piezoelectric element, is used for receiving the ultrasonic beam generated by the piezoelectric element, converging the ultrasonic beam and controlling the ultrasonic propagation direction, so that the ultrasonic beam forms an ultrasonic beam which is focused first and then propagates in parallel. Through implementation of the technical scheme, the technical problems of low detection precision of a conventional ultrasonic probe and low detection efficiency of an existing focused probe can be solved, the defect area or the indication length can be accurately measured, the probe is suitable for detecting internal defects of a thin-walled part and near-surface defects of a medium-thickness part, and the probe has the advantages of high-precision detection and high detection efficiency.