208 results about "Ultrasonic technology" patented technology

The invention discloses a nondestructive testing device for a steel profile and a testing method of the nondestructive testing device. According to the method disclosed by the invention, the ultrasonic technology is combined with optical imaging, so that synchronous detection of surface and internal defects can be completed at one time. Ultrasonic waves penetrate through the interior of the steel profile, and hidden defects such as cracks and air holes are accurately recognized; the optical camera module captures visible problems such as surface scratches and corrosion in real time. The integrated detection mode avoids the tedious process of step-by-step operation required by a traditional method, for example, magnetic powder detection of surface defects and ultrasonic scanning of an internal structure are not needed, the detection period is greatly shortened, and the method is especially suitable for steel structure buildings, bridge engineering and other scenes with high requirements for detection efficiency and has good application prospects. The full-process automatic design effectively reduces the influence of human intervention, and ensures the scanning continuity of the detection area; the intelligent algorithm automatically analyzes the ultrasonic echo signal and the optical image data, and judges the defect level according to the preset standard, thereby avoiding subjective misjudgment of manual visual inspection.

The invention discloses a fructus psoraleae total flavone extract as well as a preparation method and application thereof in promoting hair growth. According to the preparation method of the fructus psoraleae total flavone extract, the specific eutectic solvent is adopted, the ultrasonic technology is combined for extraction, the content of total flavone in the fructus psoraleae extract can be remarkably increased, and the fructus psoraleae total flavone can be efficiently extracted; and the adopted extraction solvent has the advantages of greenness, environmental protection, efficient process, low cost, high safety and the like, and can solve the problems of the existing extraction process. The malaytea scurfpea fruit total flavone extract obtained by the method has the effect of promoting hair growth and can remarkably promote hair follicle cell proliferation and prolong the hair growth period, the prepared external gel product has the hair growth effect, the preparation method is simple, and external use is convenient. The malaytea scurfpea fruit total flavone extract provided by the invention can be used for developing more cosmetics and medical products for preventing alopecia and promoting hair growth, and a new scheme is provided for green extraction of natural active ingredients and treatment of alopecia.

The invention relates to the field of medical materials and medical instruments, and discloses a dry bioprosthetic valve and a preparation method thereof.The preparation method comprises the following steps that S1, pericardium and a cross-linking agent solution are mixed for a cross-linking reaction; s2, carrying out first dehydration treatment on the crosslinked pericardium by adopting a first dehydration solution with gradually increased concentration gradient under an ultrasonic condition; and S3, carrying out second dehydration treatment on the pericardium subjected to the first dehydration treatment by adopting a second dehydration solvent, so as to obtain the dried bioprosthetic valve. According to the preparation method provided by the invention, ethanol, isopropanol and water in a specific proportion are adopted to prepare a dehydration solution with gradient concentration, and two-step dehydration drying is carried out in combination with the physical effect of an ultrasonic technology and glycerol, so that rapid rehydration of the bioprosthetic valve is realized, and the original shape and mechanical property of the bioprosthetic valve can be better recovered after rehydration; and the immediate hemodynamic stability of the valve is improved.

The invention provides a logarithmic bus bearing roller defect detection method and system based on an ultrasonic technology, and the method comprises the steps: obtaining an ultrasonic detection signal of the surface of a logarithmic bus bearing roller, and carrying out the preprocessing of the ultrasonic detection signal, and obtaining a first echo signal sequence; obtaining an average value sequence, a skewness sequence, a kurtosis sequence and a first high-order cumulant sequence based on the first echo signal sequence; correcting the first high-order cumulant sequence based on the average value sequence to obtain a second high-order cumulant sequence; optimizing the first echo signal sequence based on the dictionary matrix and the signal sparse coefficient vector to obtain a second echo signal sequence; and fusing the sequences to obtain a multi-dimensional feature vector sequence, and comparing the multi-dimensional feature vector sequence with a preset vector threshold to detect whether the logarithmic bus bearing roller has defects or not. According to the method, the problem of beam distortion of traditional ultrasonic waves during detection of the roller defects of the logarithmic bus bearing is solved, and the detection precision is remarkably improved.

The embodiment of the present application provides a kind of humidity control device and refrigerator, humidity control device is connected with the drawer interchamber of refrigerator, including filter, fan, air duct component, ventilation cover, air duct component includes air inlet and air outlet, is connected with the drawer interchamber by air outlet, ventilation cover is set on the shell of refrigerator, and is connected with air inlet, for introducing ambient air;Fan is arranged in air duct component, for adjusting the air flow rate in air duct component;Filter is arranged in air duct component, for filtering ambient air.The embodiment of the present application can when the internal humidity of drawer interchamber is less than preset value range, start fan to intensify the air flow speed in air duct component, more quickly introduce ambient air into drawer interchamber, to increase the internal humidity of drawer interchamber, humidification is carried out by the way of introducing ambient air, can solve the problem that existing active humidity control needs to rely on water box and ultrasonic wave technology.

According to the fault early warning system for the wind power booster station provided by the invention, the limitation of traditional single-point monitoring is broken through by fusing the infrared ultrasonic technology and the ultrahigh frequency technology through the non-contact sensor, so that the early fault detection rate is greatly improved; the composite heat dissipation system suppresses the temperature rise of a transformer hot spot based on a dynamic heat management mechanism of a phase change material and a heat pipe, and the energy-saving efficiency is improved; the edge calculation early warning center converts temperature, partial discharge, strain and other multi-source heterogeneous data into a unified health degree index through a weighted fusion algorithm, and in combination with an equipment topology correlation analysis model, the positioning accuracy of a fault source is greatly improved, and the early warning response time delay is greatly reduced.

The invention belongs to the technical field of lithium ion battery lithium precipitation detection, and particularly relates to a lithium ion battery lithium precipitation diagnosis method based on an ultrasonic sensing technology. According to the method, lithium ion battery lithium precipitation fault diagnosis can be realized, the characteristic relation between the ultrasonic technology and the lithium ion battery lithium precipitation morphology is proposed for the first time, and a theoretical basis is provided for establishing an ultrasonic-based lithium precipitation early warning mechanism. And a theoretical basis is provided for deeply researching lithium precipitation distribution characteristics and a lithium dendrite evolution mechanism. And a key technical support is provided for developing a safer and more reliable next-generation energy storage system.

The invention relates to a bridge crack three-dimensional parameter detection device and method based on UWB and ultrasonic technology, and the method comprises the steps: arranging measurement points in a to-be-detected region of a bridge according to a grid, distributing a unique identifier for each measurement point, and storing the position information of each measurement point; acquiring the position of the detection probe in real time through a UWB positioning network, and controlling the detection probe to move to each detection point according to a preset path; an ultrasonic detection module is started at the measuring point, and the crack depth and the crack trend are calculated; acquiring a crack image through a camera, extracting a crack contour through image processing, and calculating a crack width and a crack distribution density; and performing crack grading evaluation to generate a detection report. The method has the beneficial effects that the moving path of the detection probe can be accurately planned based on the pre-arranged position information of the detection points, so that the detection probe can quickly and accurately reach each detection point, the time and errors of manually searching the detection points are reduced, and the efficiency of detection work is greatly improved.

The invention discloses an optimization method for ultrasonic measurement and drilling of water and soil loss data, belongs to the technical field of water and soil conservation and environmental monitoring, and realizes efficient monitoring and accurate prediction of a water and soil loss process by combining an ultrasonic technology and water and soil loss monitoring data analysis. The method can overcome the limitation of a traditional monitoring technology, provides more accurate water and soil loss data, and improves the accuracy and reliability of water and soil loss prediction by optimizing a data processing model. Experimental results show that the precision of water and soil loss prediction can be effectively improved by using the method, a scientific basis is provided for water and soil conservation and environmental protection, and the method has a wide application prospect.

The invention relates to an ultrasonic technology, and provides an obstacle recognition method and device, electronic equipment and a computer storage medium, the method comprises the steps that a plurality of spatial points are acquired, and the plurality of spatial points comprise corresponding points of a plurality of ultrasonic points collected by at least one ultrasonic sensor at the same moment in the same preset coordinate system; the plurality of spatial points are clustered to obtain at least one clustering cluster, and the clustering distance between any two spatial points in the clustering process is determined according to the ranging distance and the echo intensity of the ultrasonic wave point corresponding to each spatial point in the any two spatial points; and carrying out obstacle identification on each cluster. According to the invention, the accuracy and robustness of obstacle identification can be improved.

The invention relates to the technical field of battery charging control, and particularly provides a power battery multi-stage dynamic charging control method based on ultrasonic monitoring feedback, which comprises the following steps: constructing a safe charging boundary constraint of a power battery, and generating a multi-stage charging strategy under the safe charging boundary constraint; when the SOC value of the power battery is charged to the SOC switching point, the next stage of charging is switched; in the charging process of each stage, the lithium precipitation risk state of the power battery is monitored by adopting an ultrasonic technology, characteristic values are monitored in advance, and the lithium precipitation risk is evaluated; and when the risk of lithium precipitation occurs, entering the next stage of charging in advance and dynamically adjusting the SOC switching point. According to the method, the lithium precipitation risk is detected and fed back in real time in the charging process, charging control is dynamically and adaptively carried out, and collaborative optimization of charging efficiency and safety is achieved.

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 invention relates to the technical field of preparation of environmental functional materials, and discloses a directional synthesis method of magnetic porous iron-doped graphitized biochar, which is realized by the following steps: cooperatively inducing low-temperature graphitization by utilizing a biomass endogenous S < 2 > self-template and nano-diamond; performing double-complexing ultrasonic impregnation on the iron precursor to realize nanoscale dispersion; performing staged pyrolysis, pre-carbonizing in an inert atmosphere to construct a carbon skeleton, and synchronously completing iron reduction and graphitization in a reducing atmosphere; performing mixed pickling to synchronously remove the template and construct a passivation layer; and finally, carrying out magnetic separation to obtain the high-porosity and uniformly iron-doped magnetic graphitized charcoal. A graphitized porous structure is realized through cooperation of a low-temperature self-template and nano-diamond, iron agglomeration is inhibited through a double-complexing ultrasonic technology, a protective layer and active sites are synchronously constructed through mixed pickling and passivation, and three technical barriers of high-temperature collapse, iron particle inactivation and short cycle life of a traditional process are broken through.

This invention relates to an ultrasonic-assisted laser cleaning device for the inner wall of an air intake using negative pressure adsorption, belonging to the field of aircraft maintenance and surface treatment. It includes: a housing with an opening on one side of its working surface, and a flexible sealing member circumferentially disposed around the opening; a laser cleaning head disposed inside the housing; an ultrasonic amplitude transformer arranged in a ring around the laser cleaning area; an ultrasonic transducer connected to the ultrasonic amplitude transformer; a negative pressure suction unit connected to the housing for creating a negative pressure airflow field within the housing; and a high-pressure gas injection unit disposed opposite to the negative pressure suction unit for assisting in the formation of the airflow field. The ultrasonic amplitude transformer has a ring-shaped structure and is arranged in a ring array on the inner wall of the housing, with the ultrasonic transducer mounted thereon, converting electrical signals into ultrasonic vibrations via piezoelectric ceramics. This invention, by combining ultrasonic technology with laser cleaning, can adapt to cleaning areas with different radii of curvature, thereby achieving all-position cleaning.

The invention relates to efficient dust and mercury removal equipment based on the ultrasonic technology, and relates to the technical field of dust and mercury removal equipment, the efficient dust and mercury removal equipment comprises a vertically installed tank body and a supporting frame fixedly arranged on the bottom side of the tank body, an air inlet pipe is fixedly arranged on the upper portion of the tank body, a blow-off pipe is fixedly arranged at the bottom of the tank body, and an exhaust pipe is fixedly arranged on the periphery of the lower portion of the tank body; a dust removal assembly and a mercury removal assembly are arranged on the inner wall of the tank body; a base plate is fixedly arranged on the bottom side of the supporting frame, a plurality of trundles with a locking function are fixedly arranged on the bottom side of the base plate, and a traction handle is installed on the edge of the upper surface of the base plate. According to the device, when the device needs to be moved, a fixing structure of the tank body and the ground does not need to be dismantled, a single person can easily drag the tank body by means of the traction handle and the trundles, the tedious dismantling and the multi-person cooperative carrying process are avoided, time and labor cost are greatly saved, and the efficiency and convenience of device short-distance position adjustment are remarkably improved.

A steel ladle structure and method for applying ultrasonic waves to CAS-OB refining comprises a refining steel ladle and ultrasonic generators, the ultrasonic generators are installed in the center of the bottom of the refining steel ladle, and the multiple ultrasonic generators are installed at the positions, one fourth to one half away from the bottom, of the side wall of the refining steel ladle. A plurality of ultrasonic generators are installed at the positions, 1 / 2-3 / 4 away from the bottom, of the side wall of the refining steel ladle. In order to solve the problems that in the CAS-OB refining process, the removal depth and speed of inclusions are not enough, and molten steel components are not uniform, the invention provides a steel ladle structure and method for applying ultrasonic waves to CAS-OB refining. An ultrasonic technology is adopted in the refining process, ultrasonic waves are spread in molten steel to generate a cavitation effect, bubbles are promoted to be formed in the molten steel, a vibration effect is generated, and the purposes of reducing molten steel inclusions, removing gas and homogenizing components are achieved.

The utility model provides a kind of based on ultrasonic technology's cosmetic bottle high -efficient cleaning device, it is related to cosmetic bottle production technical field, including ultrasonic cleaning machine;The rear end middle lower position of ultrasonic cleaning machine is fixedly connected with the front end lower position of adjusting frame, adjusting screw is rotatably connected in the inside middle position of adjusting frame, lifting block is slidably connected in the inside position of adjusting frame, and screw hole is set in the top middle position of lifting block. Two cover plates are driven by bidirectional screw rod and opposite sliding block to shield the upper end of ultrasonic cleaning machine, in the cleaning process, cover plate can effectively prevent cleaning liquid from splashing to the outside of cleaning machine, avoid the waste of cleaning liquid, keep the neatness of surrounding working environment, reduce additional cleaning workload. Solve the problem that such taking mode is easy to leave mark in the process that cosmetic bottle is washed by ultrasonic, needs to be taken out from the liquid storage pool of ultrasonic cleaning device by artificial the bottle that cleaning is completed.

The invention discloses a method for extracting tetrandrine in stephania tetrandra, which comprises the following steps: (1) mixing stephania tetrandra and ethanol, extracting, collecting filtrate, and removing ethanol to obtain stephania tetrandra extract; (2) mixing organic matters, inorganic salts and water to obtain an aqueous two-phase system; and (3) adding the stephania tetrandra extract into the aqueous two-phase system, and then carrying out ultrasonic treatment, shaking extraction and centrifugation to obtain an upper-phase system and a lower-phase system which contain tetrandrine. According to the method for extracting the tetrandrine in the stephania tetrandra, an aqueous two-phase extraction method and an ultrasonic technology are combined, the extraction rate of the tetrandrine in the stephania tetrandra is taken as a target, and an extraction and separation process of the tetrandrine in the stephania tetrandra extract is optimized by adopting the aqueous two-phase extraction method. The tetrandrine extracted by the ultrasonic-assisted aqueous two-phase method is high in yield and low in solvent residue. The extract obtained by the method has a good inhibition effect on pancreatic lipase.

The present application relates to the technical field of porous materials, and particularly relates to a porous material polishing system, a polishing method and a low-temperature oxygen removal method of metal powder, the porous material polishing system comprising a reactor, a cooling device, an ultrasonic device, a magnetic stirring device, a power supply device and an automatic control module. The system combines anodic oxidation and ultrasonic technology, uses the anodic oxidation principle to form an oxide film on the surface of the internal structure of the porous material, due to the unevenness of the oxide film, the surface of the porous material forms a layer of imperfect and crack-characteristic surface brittle shell after repeated breakdown for a long time, then the ultrasonic device is used to break the shell through specific frequency ultrasonic and make it brittle to fall off under low-frequency vibration, complete the stripping of the residual powder on the surface of the internal channel of the porous material, realize the polishing effect of high uniformity and smoothness in mesoscale, and enhance the biocompatibility without sacrificing the mechanical properties.

The invention discloses oil and gas well carbon dioxide online monitoring and metering equipment and an implementation method thereof, and relates to the technical field of oil field metering. The equipment comprises a gas-liquid separation unit, a liquid production capacity and moisture content analysis and detection unit, a carbon dioxide content detection unit, a gas flow unit, an automatic control unit, a data acquisition and transmission unit and an auxiliary unit, on-line metering and remote data transmission of parameters including liquid production capacity, gas production capacity, water content, carbon dioxide content, pressure and temperature of a wellhead of an oil well can be realized. The gas-liquid separation unit adopts a gravity separation method and is combined with a specific structural design to guarantee the separation effect; each parameter detection unit realizes accurate detection based on an ultrasonic technology, an infrared absorption principle, a thermal measurement principle and the like; data are uploaded to an upper computer through a DTU unvarnished transmission technology, and real-time monitoring and data analysis are supported. The system is adaptive to conventional drive and CCUS drive oil fields, the automation degree is high, the environmental adaptability is high, and data support is provided for accurate management of oil reservoirs.

The application discloses an ultrasonic transduction substrate, a preparation method and an ultrasonic transduction device, relates to the technical field of ultrasonic technology, and can improve the elasticity of a vibrating diaphragm of the ultrasonic transduction device, inhibit the risk of diaphragm rupture, improve the reliability of the ultrasonic transduction device, and prolong the service life of the ultrasonic transduction device. The ultrasonic transduction substrate comprises a substrate, a first electrode arranged on one side of the substrate, a first insulating layer arranged on the side, away from the substrate, of the first electrode, a second insulating layer arranged on the side, away from the substrate, of the first insulating layer, a cavity being formed between the side, close to the substrate, of the second insulating layer and the side, away from the substrate, of the first insulating layer, and a second electrode arranged on the side, away from the substrate, of the second insulating layer. The second insulating layer is used for realizing ultrasonic energy conversion through vibration deformation. The side, away from the substrate, of the second insulating layer has a recessed part and / or a protruding part, and / or the side, close to the substrate, of the second insulating layer has a recessed part and / or a protruding part.

The present application belongs to the field of wastewater treatment technology and energy saving and environmental protection, and particularly relates to a method for preparing aerogel for selectively separating radionuclide cesium in water and application thereof. Graphene oxide is prepared by using hydrothermal technology, and then molybdenum disulfide / GO aerogel is prepared by using hydrothermal synthesis and ultrasonic technology, and then prussian blue (PB) is inlaid and grown on the surface of the aerogel, so as to solve the problems of easy agglomeration and difficult recovery of PB and MoS2, endow the GO aerogel with multifunction, and construct PB / MoS2 / GO aerogel for selectively separating radionuclide cesium in water. The selective separation performance of the aerogel for radionuclide cesium in water under different conditions is investigated, the highly efficient enrichment and recovery of radionuclide cesium are effectively realized by using the super-light and highly porous characteristics of the aerogel, and the application potential of the aerogel in reducing secondary pollution and improving environmental governance effect is verified. The present application provides an efficient and environmentally friendly solution for radionuclide wastewater treatment, and has a wide market application prospect.

The utility model discloses a finely adjustable atomizing nozzle device for preparing superfine powder, which belongs to the technical field of powder preparation devices and is characterized in that a liquid inlet is arranged at the upper part of a nozzle body, a liquid conveying pipeline is arranged at the lower part of the nozzle body, and a liquid flow adjusting valve is arranged at the joint of the liquid inlet and the liquid conveying pipeline; a plurality of clamping grooves are formed in the inner wall of the liquid conveying pipeline, and a baffle is detachably mounted on each clamping groove; a gas channel of a valve structure is arranged on the outer side of the lower end of the liquid conveying pipeline. And at least one ultrasonic device is arranged below the liquid conveying pipeline. According to the gas atomization device, firstly, the diversified baffles are used for primarily crushing molten metal, the gas atomization condition is effectively improved, and the gas atomization process is more sufficient. After gas atomization primary crushing, a non-contact ultrasonic technology is introduced, secondary crushing is conducted on molten metal, particles are further refined, the atomization efficiency is remarkably improved, and therefore superfine powder with the uniform particle size can be better prepared.

The utility model discloses an ultrasonic probe combined patch clamp device which comprises a placing table and a patch clamp bearing base, the patch clamp bearing base is arranged at the top of the placing table, and the patch clamp bearing base is used for placing a culture dish; the ultrasonic probe is arranged above the patch clamp bearing base; the regulation and control mechanism is connected with the ultrasonic probe and the placement table, and the regulation and control mechanism is used for regulating the position and the angle of the ultrasonic probe. An ultrasonic technology and a patch clamp technology can be combined by utilizing the patch clamp bearing base and the ultrasonic probe, so that the ultrasonic technology and the patch clamp technology can be used at the same time, operation steps during an experiment are reduced, the difficulty of experiment operation is greatly reduced, the ultrasonic technology and the patch clamp technology can be used in a combined manner, and the experiment efficiency is improved. More comprehensive cell and molecular biology research is carried out, and the occurrence mechanism of diseases is deeply understood.

A paper cutting device using ultrasonic technology, the device comprising a device outer body (1); a feed slot (101) and a discharge slot are symmetrically provided in the front end face and the rear end face of the device outer body (1) respectively; a partition plate (102) is fixedly installed in the device outer body (1), and the two sides separated by the partition plate (102) inside the device outer body (1) are configured as a cutting cavity and an apparatus cavity respectively; a first paper pressing mechanism (13) and a second paper pressing mechanism (16) are respectively arranged along two sides of the lower portion of the inside of the cutting cavity inside the device outer body (1), and the internal structures of the first paper pressing mechanism (13) and the second paper pressing mechanism (16) are the same; the first paper pressing mechanism (13) comprises a second frame (1301), an upper slot body (1302) and a lower slot body (1303), the upper slot body (1302) and the lower slot body (1303) being symmetrically arranged inside the second frame (1301), and the internal structures of the upper slot body (1302) and the lower slot body (1303) being the same. The present invention solves the problem of poor practicability of existing paper cutting devices due to inconvenient automated input and output of paper sheets during paper sheet cutting operation.

The invention discloses a method and equipment for monitoring lower limb vein deformation and blood flow based on an M-type ultrasonic technology, and the method comprises the steps: carrying out the M-type ultrasonic scanning of the lower limb skin of a user in a motion state in a preset sampling line direction through a flexible patch type ultrasonic probe; based on a preset grayscale signal gradient condition and a region-of-interest extraction condition, converting the scanned M-type ultrasonic image into a grayscale image, extracting a region-of-interest from the grayscale image, marking a low-pixel line segment representing a blood vessel envelope region in the region-of-interest as a'dark line ', d-type ultrasonic waves of a flexible patch type ultrasonic probe are used for measuring an optimal sampling line of a dark line, integration is carried out on deformation of the dark line along with time, the part between two adjacent waveforms in an obtained broken line graph is marked as a dark area, integration is carried out on changes of the edge and the internal pixel value of the dark area along with time, and the optimal sampling line of the dark line is obtained. And outputting a motion waveform image of the depth positions of the vein tube wall and the vein valve along with the time change, and calculating the vein deformation quantity of the lower limb muscles.

The utility model belongs to the field of monitoring devices, and discloses an ultrasonic water quantity monitoring device, which adopts an ultrasonic liquid level meter as a non-contact measuring meter, and can avoid the problem that the traditional contact liquid level meter is easy to corrode, pollute or erode by liquid, thereby prolonging the service life of equipment and improving the measuring accuracy of the equipment. And the ultrasonic technology can realize high-precision liquid level measurement, and is not influenced by factors such as density, temperature and pressure change of a liquid medium, so that the stability and the reliability of measurement are ensured. The liquid level meter is fixed on the upper cover of the water tank through the adapter plate, the installation process is simple and fast, the water tank does not need to be greatly transformed or additionally operated, the installation cost and time are reduced, and due to the non-contact property and the high durability of the liquid level meter, the maintenance frequency and the replacement cost are reduced, and the overall operation and maintenance cost is reduced.

This invention discloses a device and its application method for food quality testing based on air-coupled ultrasound technology, relating to the field of fruit and vegetable quality testing technology. The device includes a base plate with two opposing detection mechanisms slidably mounted on it along the Y-axis, and a placement platform between the mechanisms. The placement platform is mounted on a horizontal moving mechanism and moves up and down along the Z-axis with the vertical moving mechanism, enabling sample adjustment in the X and Z-axis directions. The detection mechanisms hold the ultrasonic transducer using a four-jaw chuck. Utilizing the independent adjustment characteristics of the four jaws of the chuck, combined with the A-scan waveform fed back from the ultrasonic pulse transceiver, precise coaxial alignment of the acoustic centers of the transmitting and receiving probes is achieved. This invention effectively solves the problems of large mechanical vibration, difficulty in aligning the acoustic center of the probe, and difficulty in performing repeatable grid scanning in existing devices, providing a stable and reliable hardware platform for texture evaluation and internal structure imaging of fruits, vegetables, and other foods.

The invention relates to the technical field of ultrasound, in particular to an ultrasonic incident angle correction method, a program product and a self-adaptive transducer. According to the method, an incident wave is emitted to a target object, a reflected wave reflected by the target object is received, and whether the intensity of the reflected wave reaches a preset condition or not is judged; if not, the incident angle is adjusted until the reflected wave reaches the preset condition, the incident angle of the ultrasonic wave can be automatically adjusted in real time, the incident angle is made to be matched with the normal direction of the skull surface, and therefore the problems of sound energy attenuation and efficiency reduction caused by the too large incident angle are avoided; dependence on traditional high-resolution medical imaging equipment is reduced, and a complex and time-consuming individualized customization process is omitted; the skull penetrating efficiency of ultrasonic energy is improved, the output energy and the focusing effect of the whole transcranial focusing ultrasonic system are optimized, and the reliability and effectiveness of a treatment scheme are improved accordingly.