106 results about "Ultrasonic technology" patented technology

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 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.

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 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 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.

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.

The invention discloses an unmanned aerial vehicle positioning and charging system and method based on an ultrasonic technology. The system comprises an unmanned aerial vehicle and a charging pile. An airborne GPS positioning module, an airborne wireless radio frequency module, an airborne charging module, a flight controller and n airborne ultrasonic sensors are arranged on the unmanned aerial vehicle, wherein n is greater than or equal to 1; the charging pile is provided with a pile-mounted wireless radio frequency module, a pile-mounted charging module and m pile-mounted ultrasonic sensors, m is greater than or equal to 1, and n + m is greater than or equal to 3; the airborne wireless radio frequency module is matched with the pile-mounted wireless radio frequency module and is used for realizing time synchronization of the unmanned aerial vehicle and the charging pile; and the flight controller generates a horizontal position adjustment instruction according to the dynamic change of the real-time distance value between each airborne ultrasonic sensor and each pile-mounted ultrasonic sensor, and controls the unmanned aerial vehicle to dynamically adjust the horizontal position until the airborne charging electrode module is in contact with the pile-mounted charging module to complete butt joint. The active positioning charging of the unmanned aerial vehicle is realized by adopting the ultrasonic sensor and the wireless radio frequency module, the cost is low, the precision is high, and the environmental robustness is strong.

The present application relates to the technical field of synthesis of nitrogen-containing heterocyclic compounds, and particularly relates to a continuous flow synthesis method of nitrogen-containing heterocyclic acetic acid; specifically, nitrogen-containing heterocyclic compounds, halogenated acetic acid ester and inorganic acid binding agent are mixed in an aprotic solvent, and then are introduced into a microchannel of an ultrasonic microchannel continuous flow reactor to perform a substitution reaction under ultrasonic cavitation; after the reaction, the reaction liquid is collected and post-treated to obtain a nitrogen-containing heterocyclic acetic acid ester intermediate; the nitrogen-containing heterocyclic acetic acid ester intermediate is introduced into a second microreactor using an inorganic lye to perform a hydrolysis reaction, and after the reaction, the reaction liquid is collected and post-treated to obtain the nitrogen-containing heterocyclic acetic acid; the present application realizes continuous flow reaction of a heterogeneous system by using emulsification and ultrasonic technology, and can be used for the next step of continuous flow hydrolysis reaction after simple filtration and separation; the present application has high yield of two-step reaction, simple separation, short reaction time, and is suitable for large-scale industrial production.

The invention relates to an intelligent depth adjusting system based on an ultrasonic technology. The intelligent depth adjusting system comprises a handheld control host and an intelligent girdling function head. The handheld control host comprises a rotary driving unit, a linear feeding unit, a middle rod, a composite sensing module and a main control processing unit, the rotary driving unit is provided with a hollow output shaft, and the middle rod is coaxially arranged in the hollow output shaft in a penetrating mode and is configured to be of a non-rotary structure which is static in the circumferential direction; the composite sensing module comprises a high-frequency ultrasonic probe arranged at the front end of the middle rod; the intelligent girdling function head comprises a negative pressure adsorption cavity and a girdling cutter assembly located in the negative pressure adsorption cavity, and the girdling cutter assembly is in transmission connection with the hollow output shaft to obtain rotating power; the main control processing unit is configured to control the linear feeding unit to drive the middle rod to extend forwards for detection in a scanning stage; and in the cutting stage, the linear feeding unit is controlled to drive the middle rod to retract backwards so as to form a cutting avoiding space.

The application discloses a preparation method of an antioxidant lead-free tin-based solder alloy for high temperature, and belongs to the technical field of solder alloy production processes. When the solder alloy is prepared by the method, elements in raw materials include the following in percentage by mass: 88-95% of Sn, 1-4% of Ag, 0.5-3% of Bi, 0.1-1% of Y, 0.05-0.2% of Hf, and the balance is inevitable impurities. The preparation method of the solder alloy is as follows: after metal raw materials are pickled and dried, Sn is first smelted and kept warm under inert gas protection, then Ag and Bi are added, stirring and heating, Y and Hf are further added and ultrasonic smelting is conducted; after a deoxidizing agent is added and reacts, the solder alloy is placed and slag is removed; three-stage refining is conducted through plasma atomization, high-low frequency ultrasonic treatment and a pulse ultrasonic conversion system; finally, the solder alloy is cooled, sieved and annealed to obtain the solder alloy. The application combines plasma technology, gas atomization and ultrasonic technology, realizes preparation of a tin-based solder alloy with uniform composition, high oxidation resistance and excellent mechanical properties, and meets the needs of the electronic welding field under high temperature environment.

A targeted therapeutic drug for lung cancer cells and a preparation method therefor, relating to the technical field of drugs for treating cancer. The targeted therapeutic drug has a benzimidazole core structure, at least one fluoropyridine group linked to the benzimidazole core by means of an amide bond, and at least one trifluoromethylsulfonyl-substituted long-chain alkane group linked to the benzimidazole core. The preparation method comprises the following steps: preparing an intermediate A, the intermediate A being an N-chloroacetyl derivative of benzimidazole; preparing a raw material B, the raw material B comprising a fluoropyridine group and a trifluoromethylsulfonyl-substituted long-chain alkane group; performing an amidation reaction on the intermediate A and the key raw material B to obtain a crude product of EG20-XIN; and purifying the crude product to obtain high-purity EG20-XIN. In the present invention, EG20-XIN is efficiently prepared, microwave and ultrasonic technology is used to improve yield and purity, and costs are reduced. Isotope labeling is used to study metabolic kinetics and biodistribution. The pharmaceutical composition is diverse and has enhanced solubility and stability and an improved therapeutic effect.

The application discloses a camel hair fiber degreasing and separating method based on biological enzyme-ultrasonic wave cooperation and belongs to the field of textile processing technology. The method is aimed at the problem of high density and smoothness of camel hair fiber scales and special grease components, and combines specific biological enzymes (lipase / esterase) with ultrasonic wave technology. The camel hair fiber is placed in an enzyme-containing treatment liquid, and is treated under ultrasonic wave field with specific frequency (25-60 kHz) and power (0.3-1.0 W / cm2) and suitable temperature (40-50 DEG C). The cavitation effect of ultrasonic wave promotes enzyme liquid penetration and assists in physically separating dense scales, and biological enzymes efficiently and specifically hydrolyze grease, and the two cooperate to realize deep degreasing, gently open the scale structure, and significantly improve the fiber separation degree and cohesion. The method has high degreasing rate (>85%), and can maximize the protection of fiber length, strength and natural luster, solves the technical bottleneck of poor spinnability of camel hair, and is green and environmentally-friendly.

The sterilization container cover of the present application adopts double-color precision mold technology, adhesive technology and ultrasonic technology to set a plane or three-dimensional elastic component on the metal, glass, ceramic or other non-metal container cover, realizes the sterilization of the container after loading, greatly reduces the investment of the factory on the giant filling and sterilization equipment and the workshop large site, reduces the production threshold and quickly realizes the profit.

The utility model discloses a sewage treatment device for linen washing, which comprises a box body, the box body is of a multi-layer structure consisting of a filter tank I, a filter tank II and a filter tank III, and a filter bin I, a filter bin II and a filter bin III are uniformly arranged in the filter tank I; the filter box assembly is fixed to one end of the box body through a support, and a filter element formed by combining a supporting frame and multiple layers of fiber filter cloth is arranged in the filter box assembly; ultrasonic generators are uniformly mounted on the outer walls of the box body on two sides of the filter tank II. According to the sewage treatment device for linen washing, the sewage treatment efficiency and the water quality purification effect are remarkably improved, the treatment cost is reduced, the maintenance process is optimized, and the service life of the device is prolonged through technical innovation of a multi-layer filter tank structure, a double-interception mechanism, an ultrasonic technology, a microorganism funnel, an activated carbon filter element, modular design and the like. And the method has remarkable economic benefits and social benefits.

The application is suitable for the field of ultrasonic technology, and provides an ultrasonic equipment configuration synchronization method and system, ultrasonic equipment and a cloud platform. The method comprises the following steps: when being a source equipment, in response to an uploading instruction, generating a source configuration data packet containing equipment characteristic information and user personalized configuration data and sending the source configuration data packet to the cloud platform; when being a target equipment, in response to a synchronization instruction, sending a configuration list request containing equipment characteristic information to the cloud platform; receiving a configuration list returned by the cloud platform, the configuration list containing compatibility states between each source configuration data packet and the target equipment under a user account; in response to an operation of a user selecting a selected configuration item from the configuration list, sending a download request for the selected configuration item to the cloud platform; and receiving and applying a target configuration data packet corresponding to the selected configuration item issued by the cloud platform to update a local configuration. The application solves the problem of deficiencies in synchronization of personalized configuration across equipment in existing ultrasonic equipment.

Disclosed in the present invention are an electronic circuit for improving electromagnetic ultrasonic transmission power and reception efficiency, and a control method. An electromagnetic ultrasonic transducer uses N sub-coils as an integral main coil; during high voltage transmission, by means of an electronic circuit, the N sub-coils is connected in parallel into a high voltage power output network; and during signal reception, the electronic circuit connects the N sub-coils in series into a large coil for receiving an electromagnetic ultrasonic echo signal, so as to enhance an electromotive force signal received in the coil. The present invention is a control circuit that reduces the impedance of a transducer during high voltage transmission, improves the power supply power obtained by the transducer, increases ultrasonic echo signals output by the transducer during reception, achieves differential symmetrical output of transducer signals, suppresses common-mode noise of the transducer, and improves the signal-to-noise ratio of received signals. The present invention solves the problem of low signal-to-noise ratio of electromagnetic ultrasonic echo signals caused by difficulty in further improving the conversion efficiency of the same transducer on the basis of existing electromagnetic ultrasonic technology.

The invention discloses an intelligent visual midwifery system for gynaecology and obstetrics based on an ultrasonic technology, and relates to the technical field of intelligent evaluation of a delivery process. Key features such as a fetal structure, cervical dilatation and a pelvic form are extracted by collecting two-dimensional and three-dimensional ultrasonic images of a pelvic cavity area of a puerpera in real time; a high-dimensional parameter model is constructed in combination with the uterine contraction period, the body position change trend and the fetal head rotation angle and is used for predicting the delivery stage; meanwhile, an individualized digital twinborn three-dimensional maternal pelvis model is established based on recognition and prediction results, a fetal head descending path and birth canal dynamic deformation are simulated, and three-dimensional visual display is provided; furthermore, cross validation is carried out through a preset rule base and a neural network output result, and abnormal trend recognition and intervention suggestion pushing are realized; the intelligent level and the precision level of birth process monitoring are improved, and the scientificity and the safety of clinical midwifery decision making are enhanced.

The utility model discloses a microcapsule lock fragrance bacteriostatic hand liquid's foamer, including the casing, be equipped with the placement cylinder on the casing, be equipped with the containing mechanism for containing hand liquid in the placement cylinder, the containing mechanism includes the foaming cup of setting in the placement cylinder, the bottom of placement cylinder is equipped with a plurality of ultrasonic generator, and the placement cylinder side wall is equipped with the cup cover. The utility model sets up the containing mechanism, can produce a large number of bubbles in a short time through ultrasonic technology ultrasonic, compared with traditional hand rubbing, mechanical stirring and so on foaming method, ultrasonic can make liquid foam more rapidly, because it can act on each part of liquid simultaneously, make bubble generation more uniform and fast, and fine foam can better clean the tiny pore of skin, can be more effective bacteriostatic, and palm flow more long.

The application discloses a method for separating and purifying phenolic substances by embedding ultrasonic coupling celery cell wall fixed bed adsorption and desorption. The method combines ultrasonic technology with fixed bed equipment and applies to the adsorption and desorption process of fruit and vegetable polyphenols on celery cell wall materials. Under the combined action of ultrasonic cavitation effect and mechanical effect, the texture of the celery cell wall material is changed in the adsorption / desorption process, and then the adsorption / desorption mass transfer parameters are changed, so that the adsorption and desorption of the celery cell wall on the polyphenols are strengthened, the breakthrough adsorption and desorption amounts are significantly improved, the desorption time is shortened, the purity of the polyphenols is improved, the breakthrough adsorption amount is increased by 15-23%, the desorption amount is increased by 17-26%, the desorption time is saved by 20-30%, and the purity of the polyphenols is increased by about 65%.

The invention discloses an ultrasonic electrodeposition coupling system and method for improving zinc electrodeposition quality, and belongs to the technical field of hydrometallurgy, the system comprises an ultrasonic electrodeposition cell, an ultrasonic generation system, a solution circulation system and a heating temperature control system; a plurality of cathode plates and anode plates are alternately arranged in the ultrasonic electrodeposition cell at intervals; the ultrasonic generation system comprises an ultrasonic generator, and the ultrasonic generator is electrically connected with the ultrasonic probe and the ultrasonic vibrator through cables; the solution circulating system comprises a solution circulating tank, a peristaltic pump, a liquid inlet pipe and a liquid discharge pipe, and the peristaltic pump conveys an electrodeposition liquid in the solution circulating tank into the ultrasonic electrodeposition tank through the liquid inlet pipe for an electrodeposition reaction; the heating temperature control system comprises a heating resistor, a thermocouple, a heating resistor power supply electrically connected with the heating resistor, and a rectification power supply electrically connected with the electrode system. Through the synergistic effect of the composite additive and the ultrasonic technology, the negative influence of impurities on zinc deposition is effectively inhibited, and the current efficiency and the zinc product quality are remarkably improved.

The application relates to the technical field of ultrasonic waves, in particular to an ultrasonic sound intensity meter calibration device and method based on an ellipsoid focusing principle. The device comprises a signal generator, a power amplifier, a spherical transmitting transducer, a standard hydrophone, an oscilloscope, an ellipsoid cavity and a liquid medium. The principle of the calibration method is as follows: the ultrasonic waves emitted by the spherical transmitting transducer as a sound source form a stable converging sound field near the focal point of the upper end of the ellipsoid cavity, the sound pressure of the upper end focal point position is measured by using the standard hydrophone, the sound intensity is converted to obtain the reference value of the sound intensity at the position, the USIM probe to be calibrated is placed at the position, the sound intensity indication value of the USIM is recorded under the same excitation condition, and the calibration of the USIM is realized by comparing the reference value of the sound intensity with the sound intensity indication value of the USIM. The application improves the accuracy, stability and repeatability of ultrasonic sound intensity measurement, and has extremely important significance for promoting the application and development of ultrasonic sound intensity technology in various fields.

The invention discloses a concrete micro pile body integrity detection method based on an ultrasonic technology, and relates to the technical field of defect detection.The method comprises the steps that original waveform data of multiple depths in a concrete micro pile are obtained; according to smooth continuity of reflection extreme points of different depths in the original waveform data, a reflection extreme chain is constructed, and the reflection extreme points are waveform maximum values in the original waveform data; determining a suspected head wave extreme point in the reflection extreme points of different depths based on the matching optimization degree and the matching mutability of different reflection extreme points on the reflection extreme chain; based on the matching optimization degree of the suspected head wave extreme points of different depths, defect existence probabilities of different depths are calculated; and when the defect existence probability meets the preset condition, the depth position of the defect of the concrete micro pile is determined. The technical effect of improving the accuracy of defect identification is achieved.

The application provides a crude oil demetallization method and relates to the technical field of petroleum refining processing. The method avoids the disadvantages of the traditional demetallization method of an electric desalting device, selects the ultrasonic technology to strengthen the crude oil demetallization process before the crude oil enters the electric desalting device, removes the chelate precipitate by using the cross-flow filtration technology and the phase separation technology, improves the utilization rate of the demetallization agent, controls the residence time of the demetallization reaction by using a permeation side control valve, makes the oil agent mixture circulate in the system, realizes the efficient removal of the metal in the crude oil, and constructs a continuous online recyclable demetallization process technology.

The invention relates to the technical field of calcium carbide method polyvinyl chloride production, and discloses a carbide slag treatment device and method based on an ultrasonic technology. The device comprises a carbide slag bin, a processor, an ultrasonic transducer, a stirrer, a cooler, an acetylene gas cabinet, a water collecting tank, a spiral conveyor, a PLC (Programmable Logic Controller) and a meter. The ultrasonic transducer is arranged in the processor and accelerates release of residual acetylene gas and water evaporation in the carbide slag by generating ultrasonic energy; the cooler is used for condensing and recycling the released acetylene gas; the PLC dynamically adjusts the ultrasonic power and starts auxiliary heating according to the feeding amount fed back by the meter and the temperature parameter in the processor, and the appropriate processing temperature is maintained. According to the invention, the automatic control of carbide slag treatment is realized, the treatment efficiency is obviously improved, the energy consumption is greatly reduced, the production safety is effectively guaranteed, and meanwhile, the recycling of acetylene gas is realized.

This invention relates to a method for monitoring wind turbine bolts based on ultrasonic and acoustic emission technologies, belonging to the field of bolt monitoring technology. The method involves acquiring the raw acoustic emission signal from the monitoring point of the wind turbine bolt; comparing the signal amplitude with a dynamic threshold customized for that monitoring point to determine whether an abnormal impact event has occurred; if so, extracting the signal characteristic parameters of the event; analyzing the characteristic parameters according to preset defect characteristic rules to determine the defect type as macroscopic damage, friction or fretting, or unknown type; and executing differentiated response strategies based on the defect type, including direct early warning for macroscopic damage, triggering ultrasonic measurement for friction or fretting events to accurately quantify the current preload and determine whether it is abnormal, and generating verification instructions for unknown types. This application, through the synergy of acoustic emission and ultrasonic technologies, integrates early dynamic damage event capture with accurate static preload measurement, achieving real-time, comprehensive, and accurate monitoring and early warning of the health status of wind turbine bolts.

This invention discloses an ultrasonic-based device and method for testing the permeability of prefabricated concrete test blocks, belonging to the field of concrete quality testing technology. It includes a control mechanism, an experimental platform, a sleeve, a cover plate, and an ultrasonic testing device. A specimen fixing seat is located on the top of the experimental platform inside the sleeve. The cover plate is connected to the top of the concrete test block via an elastic permeable mechanism. Several ultrasonic probes are located on the top of the cover plate, each connected to the ultrasonic testing device and positioned relative to a predetermined location on the concrete test block. The sleeve is equipped with a water supply mechanism and a pressurization mechanism. A permeable water recovery mechanism is connected to the experimental platform inside the fixing seat. This invention, by introducing ultrasonic technology and combining it with concrete permeability testing, achieves a more accurate assessment of the permeability performance of concrete test blocks, providing data reference for front-line engineering and significantly improving the practicality of the concrete test block permeability testing device.