771 results about "Ultrasonic device" patented technology

The invention provides a bolt monitoring method and device based on electromagnetic ultrasound and a 3D phased array, and relates to the technical field of bolt monitoring. A two-stage detection process is adopted, firstly, preliminary screening is conducted through electromagnetic ultrasound, an electromagnetic ultrasound device excites ultrasonic waves and receives echo signals, and according to the relation between the intensity of the echo signals and the passing time, a 3D phased array is obtained; constructing a time-intensity curve of each detection section, and rapidly screening candidate sections with abnormal echo signals; the method comprises the following steps: performing comprehensive three-dimensional space scanning on a candidate section through a 3D phased array technology, performing accurate scanning in a three-dimensional space through focused ultrasonic waves to obtain an ultrasonic echo signal of each space point, extracting the ultrasonic echo signal intensity of each space point and calculating a standardized deviation to mark an abnormal point exceeding a set threshold value, and finally marking the abnormal point. And through spatial aggregation analysis, a plurality of abnormal points are aggregated into an abnormal region, so that the defect positioning precision is further improved.

The utility model discloses a wafer processing device, and belongs to the technical field of semiconductors. The wafer processing device comprises a carrying table, a shock insulation pad and an ultrasonic device, wherein the carrying table is used for carrying a crystal ingot with a modified layer; the ultrasonic device is arranged above the carrying table, the ultrasonic device can generate transverse vibration waves, and the transverse vibration waves are used for vibrating along the crystal ingot and enabling cracks of the modified layer to extend in the transverse direction; and the bottom of the carrying table is fixedly arranged on the shock insulation pad. According to the utility model, the cracks of the modified layer formed on the crystal ingot by the laser pulse grow and are connected along the transverse direction, the longitudinal growth of the cracks is avoided, the production efficiency of the modified layer is improved, the laser pulse does not need to be intensively emitted, and the wafer processing period is shortened.

According to the anti-blocking adsorption laser operation endoscope and the method, the anti-blocking adsorption laser operation endoscope is installed at the position far away from an endoscope body and an adsorption opening through an adsorption switch, or the adsorption opening is a plane or a curved surface and comprises a structure of at least two open holes and matched size design. Or an ultrasonic device and an installation mode of the ultrasonic device are adopted, so that the probability that the broken stones block the suction channel is greatly reduced, and blockage is prevented, and meanwhile, the stones are continuously reset at the position of the suction port through a method that the suction switch repeatedly and continuously connects and disconnects the suction port and the suction source; therefore, the continuous laser lithotripsy performance during the operation is kept; through the program control of the suction switch of the anti-blocking adsorption laser operation endoscope, the working intensity of an operation doctor during the operation for controlling an instrument is reduced, so that the operation is more convenient and simpler; through the design of the quick-connection type connector of the anti-blocking broken stone adsorption laser operation endoscope component, instrument sterilization is more convenient, function expansion is more flexible, or independent production is arranged; the invention relates to a method for treating human and animal focuses, especially calculi, by using an anti-clogging laser surgery endoscope catheter.

The invention relates to the field of PCB (printed circuit board) printing, in particular to a high-precision multi-layer lamination and alignment PCB printing process which comprises a substrate pretreatment stage, a substrate preassembly stage, a dynamic lamination stage and a finished product output stage, the dynamic lamination stage comprises preheating treatment and resonance impurity removal treatment, and the lamination stage is divided into multi-stage lamination. And air bubbles and resin between the laminated bodies are optimized in the second pressing stage. According to the method, the inner-layer core plate and the copper foil are pretreated, so that positioning of the multi-layer core plate is more accurate and detection is facilitated, meanwhile, nanoscale micropores are formed in the copper foil through a laser technology to improve the flowing property of subsequent resin, and in the pressing process, pre-pressing and multi-stage pressing are set to improve the pressing accuracy; and in the second-stage pressing process, the dispersion direction of internal bubbles and the flowing direction of resin are improved through an ultrasonic device, a radiation heating device, a magnetic field assisting device and the like, the alignment accuracy and the pressing precision of the plate are further improved, and the machining efficiency is guaranteed.

The invention relates to the technical field of pipeline decontamination, in particular to an online pipeline ultrasonic decontamination device and method suitable for various pipe diameters, and the online pipeline ultrasonic decontamination device comprises a numerical control generator, a transducer, an amplitude-change pole, an adaptive clamp, an online monitoring device and other key components. And through the designed adaptive clamp, the device can act on pipelines with various pipe diameters and can move along the pipelines, and the decontamination requirements in different scenes are met. The online ultrasonic decontamination device is suitable for maintenance and cleaning work of pipelines with different pipe diameters in nuclear power facilities, and has important significance in improving the safety of the nuclear facilities and guaranteeing radiation protection for operators. The problem that an ultrasonic device is poor in applicability is effectively solved, meanwhile, the flexibility of the device is guaranteed, effective online decontamination of pipelines with various pipe diameters can be achieved through a single set of device, the decontamination cost of radioactive contamination of nuclear facility pipelines is effectively reduced, online efficient decontamination of radioactive contamination deposited in the pipelines is achieved, and the service life of the pipelines is prolonged. The safe and stable operation of the reactor is ensured, and the radiation risk of operators is reduced.

The invention relates to an injection device and method for particles, and the device comprises a liquid environment which is used for placing a carrier, and the particles are attached to the carrier; the special ultrasonic device is located in a liquid environment so as to generate a sound beam current in the liquid environment; the liquid supply flow channel is used for conveying an injection substance into a sound beam of the special ultrasonic device; the special ultrasonic device and the particles can be in a relatively fixed state, and the particles are located in an operable range of a sound beam of the special ultrasonic device, so that the injection substance is injected into the particles through the sound beam. According to the invention, injection aiming at single cells is realized, and particularly quantitative injection can be realized based on pulse type sound beam current.

The invention provides a liquid drop continuous generation device which comprises a first flow channel and a second flow channel, the first flow channel and the second flow channel comprise first positions which are tightly attached to each other, and each first position comprises a through hole communicating with the first flow channel and the second flow channel; the first flow channel and the second flow channel are used for introducing a first liquid and a second liquid respectively; the special ultrasonic device can act on the first liquid in the first flow channel, when the special ultrasonic device is driven in a first power period, an acoustic beam current facing the through hole is generated in the first liquid, the acoustic beam current enters the second liquid through the through hole, and liquid drops formed by the first liquid are formed in the second liquid. The invention also correspondingly provides a method for continuously generating liquid drops. The liquid drop generation mode is more flexible, the controllability is higher, and the cost is lower.

The invention discloses a wafer cleaning device based on ultrasonic cleaning, and relates to the technical field of wafer cleaning devices. Comprising a cleaning machine outer tank body, a wafer cleaning glass tank, an ultrasonic cleaning tank, an ultrasonic device, a bottom plate, a housing, a cleaning tank rail, a flow dividing water supply device and a bubble removing uniform vibration device, ultrapure water serves as a medium, ultrasonic vibration is effectively conducted to the wafer cleaning glass tank, a strong acid solution in the tank is driven to uniformly vibrate, and efficient cleaning of wafers is achieved. High turbulence pulsation and local shearing stress are formed at the junction of oblique water replenishing and the stock solution, large bubbles are sheared into small bubbles, bubble gathering is prevented, and the liquid purity and the ultrasonic cleaning efficiency are improved. Under the centrifugal separation action of the rotational flow connecting base and the annular rotational flow piece, bubbles in water flow are concentrated in the center position, ultrapure water on the outer side is rapidly discharged, the bubbles are efficiently absorbed after making contact with the hydrophobic porous membrane, and the bubble removing effect is remarkably improved.

The invention discloses a process for preparing a single-walled carbon nanotube and graphene by stripping a multi-walled carbon nanotube, which is characterized in that a supercritical CO2 fluid circulating system, ultrasonic equipment, a stirrer, an external heating jacket and a slit shearing circulating system are arranged on a coupling reaction kettle in a matched manner; the method comprises the following steps: filling a mixed solution formed by a multi-walled carbon nanotube and an organic solvent into a coupling reaction kettle, closing a feeding valve, starting a stirrer and ultrasonic equipment, and heating; the supercritical CO2 fluid is input until the pressure reaches 30-35 MPa; starting a slit shearing circulating system to perform circulating shearing; recovering CO2 after more than 80% of the multi-walled carbon nanotubes are stripped; and respectively unloading to finish the stripping process. According to the method, mature and low-cost multi-walled carbon nanotubes are used as raw materials, the single-walled carbon nanotubes and graphene are prepared by stripping the multi-walled carbon nanotubes through ultrasonic waves and slit shearing coupled supercritical CO2 fluid, the technological process is short, the production efficiency is high, the product increment is large, and the economic benefit is remarkable.

Some disclosed blood pressure estimation methods involve controlling, by a control system, an ultrasonic sensor system to transmit ultrasonic waves to a target object on an outer surface of an apparatus, the ultrasonic sensor system having M ultrasonic receiver elements in a single array. Some such methods involve receiving, by the control system from the ultrasonic sensor system, ultrasonic receiver signals from each of a plurality of the M ultrasonic receiver elements in the single array, the ultrasonic receiver signals corresponding to ultrasonic waves reflected from the target object. Some such methods involve detecting, by the control system, an artery within the target object based on the ultrasonic receiver signals. Some such methods involve estimating, by the control system, a blood pressure within the artery based on the ultrasonic receiver signals.

The invention belongs to the technical field of efficient heat management, and relates to a nanofluid enhanced heat exchange system based on a built-in ultrasonic device, which comprises an integrated micro-channel cooling plate 2, an embedded ultrasonic device 3, a nanofluid circulating system and an intelligent control system 5, the integrated micro-channel cooling plate 2 is attached to the surface of a heating device 1 (such as a solar cell panel), and the embedded ultrasonic device 3 is attached to the surface of the heating device 1. A groove is formed in the side, away from the heating device 1, of the integrated micro-channel cooling plate 2, the embedded ultrasonic device 3 is installed in the groove, and the nano-fluid circulating system and the embedded ultrasonic device 3 are in electric signal connection with the intelligent control system. The invention can effectively solve the industrial problems of high-temperature efficiency reduction, nanofluid agglomeration instability and the like of the solar cell panel, improve the heat dissipation efficiency and improve the conversion efficiency of the cell panel.

The invention provides an ultrasonic positioning method and electronic equipment, and relates to the technical field of ultrasonic localization, and the method comprises the steps: installing an ultrasonic device on a to-be-positioned object, and arranging a plurality of radio devices in a working space of the to-be-positioned object; obtaining an ultrasonic time difference corresponding to each radio device; and determining the position of the to-be-positioned object based on each ultrasonic time difference and the sound velocity of the ultrasonic signal. According to the invention, the plurality of sound receiving devices are arranged in the working space, and the ultrasonic time difference corresponding to each sound receiving device is obtained according to the fact that the time when the ultrasonic device sends the ultrasonic signal to each sound receiving device is different; therefore, by comprehensively analyzing the sound velocity of the ultrasonic signal and the ultrasonic time difference corresponding to each radio device, the influence of a multipath effect during positioning is avoided, and the positioning precision is improved.

The invention discloses a transuterine ultrasonic guided puncture biopsy device, which belongs to the technical field of medical instruments and comprises an ultrasonic probe and a power component, two ends of the power component are respectively connected with a puncture channel and a handle, and the other end of the puncture channel is rotatably connected with one end of a rotary cutting head. One end of the rotary cutting head is connected with a handle, the other end of the rotary cutting head is connected with a telescopic puncture needle, the handle is provided with a puncture needle reset button, a puncture needle exit button and a rotary cutting button, and the puncture needle reset button and the puncture needle exit button are connected with the puncture needle. The puncture needle can be accurately guided to target tissue, puncture accuracy is improved, puncture failure and mistaken puncture risks are reduced, various functional buttons are arranged on the handle, medical staff can easily perform various operations, operation difficulty is reduced, working efficiency is improved, and the puncture needle can be matched with various ultrasonic devices and is convenient to use. And the method has good compatibility.

The invention provides a flow-type detection chip, comprising: a flow channel in which a fluid injected contains particles; the special ultrasonic device is arranged at the bottom of the flow channel and is used for generating an acoustic fluid effect transmitted to fluid in the flow channel in the flow channel, so that particles in the fluid are captured to an acoustic fluid tunnel corresponding to the outline of the special ultrasonic device and move to a position corresponding to the tail end of the outline of the special ultrasonic device along the acoustic fluid tunnel to be released; the height of the captured particles in the flow channel when the particles are released is closer to the bottom of the flow channel where the special ultrasonic device is located than the height of the particles in the flow channel before the particles are captured; and the detection device comprises a detection part, and the detection part is arranged at the position of the flow channel at the downstream of the tail end of the special ultrasonic device and is used for detecting the detected parameter change when the released particles pass through the detection area corresponding to the detection part. The invention further provides a corresponding special ultrasonic device and a flow type detection method. The invention provides a microfluidic scheme which is low in cost and high in precision and can be used for flow detection.

The application discloses a wafer cleaning device based on ultrasonic cleaning and relates to the technical field of wafer cleaning devices. The wafer cleaning device comprises a cleaning machine outer tank body, a wafer cleaning glass tank, an ultrasonic cleaning tank, an ultrasonic device, a bottom plate, a cover, a cleaning tank track, a shunt water supply device and a bubble removing uniform vibration device. The application effectively conducts ultrasonic vibration to the wafer cleaning glass tank by taking ultrapure water as a medium, drives the strong acid solution in the tank to uniformly vibrate and realizes efficient cleaning of the wafer. The oblique water replenishment forms high turbulent pulsation and local shear stress at the junction with the original liquid, shears large bubbles into tiny bubbles, prevents bubble aggregation, improves liquid purity and ultrasonic cleaning efficiency. The centrifugal separation effect of the cyclone connecting seat and the annular cyclone sheet makes the bubbles in the water flow concentrate at the center position, the outer ultrapure water is quickly discharged, the bubbles are efficiently absorbed after contacting the hydrophobic porous membrane, and the bubble removing effect is significantly improved.

The invention relates to a cleaning method and device for a quartz furnace tube in the CVD deposition process and the like. The method comprises the steps that the quartz furnace tube is placed into a cleaning tank and driven to roll through a roller assembly; sequentially spraying low-concentration acid liquor and high-concentration acid liquor to form deposited acid liquor which at least immerses part of the furnace tube, and starting the ultrasonic device to conduct pulse type ultrasonic waves after the deposited acid liquor reaches the standard; spraying low-concentration acid liquor; after operation is stopped, deposited acid liquor is filtered and recycled to a low-concentration area of the acid storage tank; and finally cleaning and air-drying. Through cooperation of gradient pickling and pulse type ultrasonic waves, surface layer loose sediments are efficiently dissolved through low-concentration acid liquor, deep layer stubborn sediments are subjected to ultrasonic activation and then fully react with high-concentration acid liquor, and finally a matrix is neutralized through the low-concentration acid liquor, so that the high sediment removal rate is guaranteed, furnace tube corrosion is avoided, the service life of the furnace tube is prolonged, and the service life of the furnace tube is prolonged. And meanwhile, resource waste and environmental protection pressure are reduced through acid liquor recycling.

Examples of apparatus, methods, and compositions for endodontic treatments are described. The apparatus can include a fluid platform configured to substantially retain fluid in a tooth chamber during treatment. The fluid platform can help maintain fluid circulation in the tooth chamber as fluid flows into and out of the tooth chamber. The apparatus can also include a pressure wave generator configured to generate acoustic waves that can be used for cleaning root canals and tooth surfaces in the tooth chamber. Examples of pressure wave generators include a liquid jet, an electromagnetic energy delivery device, and an ultrasonic device. The fluid can include antiseptic or antibacterial solutions to assist in tooth cleaning. The fluid may be degassed to have a reduced dissolved gas content (compared to non-degassed fluids used in endodontic treatments), which may improve the effectiveness of the pressure wave generation or the cleaning.

The present invention relates to the technical field of active ingredient extraction, and specifically discloses a yellow green tea polysaccharide and its extraction method and application, comprising the following steps: S1. defatting and decolorizing yellow green tea powder and drying for standby use; S2. mixing tea powder with an extracting solution in an ultrasonic device to obtain an extraction mixture, and then adding a complex enzyme to the extraction mixture for extraction to obtain a first mixture; S3. filtering the first mixture, taking the supernatant, and concentrating it by rotary evaporation to obtain a second mixture; S4. precipitating the second mixture with alcohol, centrifuging, and re-dissolving the precipitate to obtain a third mixture; S5. adding sevage reagent to the third mixture to obtain a deproteinized mixture, and then rotary evaporating to obtain a concentrated solution; S6, dialyzing and drying the concentrated solution to obtain yellow green tea polysaccharide. In the present invention, the enzymatic extraction step and the ultrasonic extraction step are carried out simultaneously. By adjusting the relevant processing parameters, the two extraction methods can be coordinated with each other, so that the extraction efficiency of the yellow green tea polysaccharide is greatly improved.

A wastewater treatment device based on a persulfate advanced oxidation process comprises a persulfate advanced oxidation reactor, a persulfate adding device and a catalyst adding device, and is characterized in that the persulfate advanced oxidation reactor adopts a structural design of a cylinder at the upper part and a cone at the lower part; an anchor-paddle composite water impeller, a filler layer, a persulfate distributor and a catalyst distributor are arranged in the reactor, an overflow weir, an ultrasonic device, a chemical oxygen demand (COD) on-line analyzer and an oxidation-reduction potential (ORP) on-line analyzer are arranged on the outer wall of the reactor, an anchor stirrer is matched with the conical bottom of the reactor, and through the synergistic effect of mechanical stirring and the ultrasonic device, the persulphate on-line analyzer and the persulphate on-line analyzer are analyzed. A strong shear flow field and an ultrasonic cavitation field are constructed, efficient activation of persulfate and a catalyst is achieved, and the effluent quality is improved. The method has the advantages of high solid-liquid mass transfer efficiency, high catalyst utilization rate, low operation energy consumption, remarkable sludge reduction effect and the like, and is particularly suitable for treating refractory organic wastewater generated in the industries of pharmacy, pesticide and the like.

The invention discloses a synthesis method of an M-N-C zinc metal catalyst, which belongs to the field of catalyst synthesis, and comprises the following specific steps: adding a certain amount of zinc nitrate hexahydrate into a mixed solution of ethanol and water, dissolving the zinc nitrate hexahydrate in methanol, adding an addition polymer of polypropylene glycol and ethylene oxide, and carrying out ultrasonic dissolution on the mixture based on ultrasonic equipment, so as to obtain the M-N-C zinc metal catalyst. The preparation method comprises the following steps: dissolving 2-methylimidazole in methanol to obtain a solution A, dissolving 2-methylimidazole in methanol, and stirring to clarify the solution to obtain a solution B; through cooperative use of the devices, the M-N-C zinc metal catalyst with constructed mesopores is obtained, pore channels are graded on the basis of etching and regulation and control of mesoporous pore channels, the half-wave potential of the M-N-C zinc metal catalyst is improved on the basis of pore channel grading, mass transfer of reactants and products is accelerated, pore channel blockage is avoided, and the service life of the M-N-C zinc metal catalyst is prolonged. And through the porous synergistic effect, the transmission path of protons and electrons is shortened, the polarization loss is reduced, and thus the current density is improved.

The invention relates to a method for preparing dendrobium officinale full-liquid yoghurt by an ultrasonic synergistic composite enzymolysis method. The method comprises the following steps: selecting and treating raw materials; putting the dendrobium officinale stem slurry into an ultrasonic device, and then starting the ultrasonic device to carry out ultrasonic treatment on the dendrobium officinale stem slurry for a certain time; adding a compound enzyme mixture into the dendrobium officinale stem slurry subjected to ultrasonic pretreatment, and carrying out enzymolysis reaction to obtain enzymolysis slurry; terminating the enzymolysis reaction; filtering, centrifuging and collecting supernate to obtain dendrobium officinale whole liquid; performing freeze-drying treatment; adding the dendrobium officinale whole liquid freeze-dried powder into milk to form a mixed solution, and then adding streptococcus thermophilus and lactobacillus bulgaricus into the uniformly stirred mixed solution for fermentation to form the yoghourt. The method has the advantages that the physical wall breaking effect of ultrasonic waves and the biological catalysis effect of the compound enzyme are combined, so that the extraction efficiency of active ingredients such as polysaccharide, anthocyanin and amino acid in the dendrobium officinale stems is improved, and the biological activity of the ingredients is reserved to the maximum extent.

The invention relates to the technical field of ultrasonic imaging, in particular to three-dimensional ultrasonic equipment integrating a photoelectric sensor and a motion sensor and a reconstruction method, and the equipment comprises an ultrasonic probe module which is used for obtaining a two-dimensional ultrasonic image sequence; the photoelectric sensing module is used for detecting the translational motion of the probe and generating planar motion information; the motion sensing module is used for detecting the rotary motion of the probe and generating space attitude information; the image processing module is used for performing feature extraction and segmentation on the image sequence through a pre-training image segmentation model to obtain a segmentation result; and the three-dimensional reconstruction module is used for performing space fusion and volume data reconstruction on the image and the segmentation result based on the motion and attitude information to generate a three-dimensional image. According to the invention, real-time high-precision tracking of the spatial pose of the probe is realized, the recognition capability of tissue boundaries and lesions is improved in combination with image segmentation, an accurate three-dimensional reconstruction image is generated through multi-source data fusion, and the visualization and diagnosis reliability of a complex structure is remarkably enhanced.

Embodiments of the present application relate to the technical field of medical instruments, and disclose an ultrasonic device and system, a beamforming method, an electronic device and a storage medium. The ultrasonic device comprises a probe, the probe comprising an ultrasonic transducer array assembly, configured to emit ultrasonic waves and collect echo signals of human tissue; and a processing assembly, configured to: when the probe is stationary for more than one collection cycle, the processing assembly acquires echo collection information of a current window in a current collection cycle, and performs beamforming on the echo signals of the current window according to weight matrix parameters of a window corresponding to the current window in a previous collection cycle, and meanwhile, obtains the weight matrix parameters of the current window according to the echo collection information of the current window, so as to perform beamforming on echo signals of a window corresponding to a next collection cycle according to the weight matrix parameters of the current window in the next collection cycle, the collection cycle comprising at least one window. This is favorable to improving the accuracy and real-time performance of ultrasonic imaging of human tissue.

The invention discloses a low-stress bleeding processing method for channel catfish. The method comprises the following steps: an acid-base control step, in which the channel catfish is placed in water containing sodium citrate to control the acid-base in the body, thereby increasing the alkali reserve in the body of the fish; a combined light anesthesia step, in which the channel catfish is lightly anesthetized through the combined action of low temperature and a chemical anesthetic, so that the fish exhibits a state in which the gill cover of the fish opens and closes weakly and slowly, and the fish body rolls over and loses balance; a fish body puncture step, in which the blood circulation of the channel catfish is destroyed by a manual or mechanical method, thereby creating a bleeding wound on the fish body; a metabolic bleeding step, in which the fish body is placed in a bleeding tank that has been aerated and oxygenated in advance to saturated dissolved oxygen, for bleeding, while maintaining a certain dissolved oxygen concentration; and an ultrasonic blood purification step, in which the fish body is placed in a bleeding tank equipped with an ultrasonic device for bleeding, thereby accelerating the discharge of residual blood in the body.

The invention provides a correlation distance ultrasonic imaging method, and belongs to the technical field of ultrasonic imaging, and the method specifically comprises the steps: collecting N standard ultrasonic signals through an ultrasonic device based on a standard sample according to the equipment parameters of the matched ultrasonic device, and generating a standard self-correlation signal based on the standard ultrasonic signals; equipment parameters are kept unchanged, the to-be-tested workpiece is scanned to acquire a test ultrasonic signal, and a test self-correlation signal is generated based on the test ultrasonic signal; according to the method, the cross-correlation signal between the test self-correlation signal and the standard self-correlation signal is calculated, and the workpiece image is generated based on the slope of matching of the cross-correlation signal and the mapping function of the grayscale image, so that the imaging processing accuracy is improved.

The invention provides an ultrasonic image processing method, ultrasonic equipment and a storage medium. The processing method comprises the following steps: acquiring a target ultrasonic image of a target object; and inputting the target ultrasonic image into the trained target detection model to obtain and display at least one target area in the target ultrasonic image. The trained target detection model is obtained by training based on a plurality of training ultrasonic images, an ultrasonic gain level corresponding to each training ultrasonic image in the plurality of training ultrasonic images, and at least one calibration area corresponding to each training ultrasonic image. The trained target detection model not only can pay attention to the information such as the organization structure form in the ultrasonic image, but also can adaptively correct the ultrasonic image performance difference caused by different ultrasonic gain levels, and is beneficial to improving the accuracy and robustness of the ultrasonic image processing method.

A piezoelectric actuator includes a substrate, and a first piezoelectric device and a second piezoelectric device formed at the substrate. The first piezoelectric device includes a first lower electrode, a first piezoelectric body, and a first upper electrode. The second piezoelectric device includes a second lower electrode, a second piezoelectric body, and a second upper electrode. A side surface of the first lower electrode is not covered with the first piezoelectric body, and a side surface of the second lower electrode is not covered with the second piezoelectric body. The piezoelectric actuator further includes a common electrode formed at the substrate and coupled to the first upper electrode and the second upper electrode, and an insulating layer located between the common electrode and the first lower electrode and between the common electrode and the second lower electrode.

The present application provides a sample analyzer comprising an ultrasonic device for generating ultrasonic vibration in a target liquid to perform an ultrasonic operation; the ultrasonic device comprises a moving part, an ultrasonic driving part, an ultrasonic transducer and an energy transmission part, and the moving part is used for driving the energy transmission part to move; the ultrasonic driving part is used for driving the ultrasonic transducer to form ultrasonic vibration; the energy transmission part is used for transmitting ultrasonic vibration to target liquid to execute ultrasonic operation; the controller is used for acquiring and storing preset calibration parameter information before, during or after the ultrasonic device is mounted; the step of executing the ultrasonic operation according to the stored preset calibration parameter information comprises the substeps of obtaining a target driving parameter of the ultrasonic driving part according to the preset calibration parameter information; and controlling the ultrasonic driving part to drive the ultrasonic transducer to form ultrasonic vibration by adopting the target driving parameter, so that the output amplitude of the energy transmission part is the target amplitude required by the ultrasonic operation.

The utility model provides an ultrasonic non-destructive detector based on wireless communication, which comprises a detector body, the detector body comprises an ultrasonic device, the bottom of the ultrasonic device is movably provided with a supporting seat, the bottom of the supporting seat is movably provided with a movable seat, the movable seat is provided with a sliding chute, and the sliding chute is provided with a wireless communication module. A sliding groove is formed in the base, a sliding block is movably installed in the sliding groove, the sliding block is installed in the sliding groove through a supporting mechanism, a clamping base is fixedly installed on the sliding block, and a fixing bolt is rotatably installed on the supporting base. According to the ultrasonic non-destructive detector based on wireless communication, when the ultrasonic non-destructive detector is used, clamping and fixing of a small pipeline are completed through the clamping seats, the clamping seats move after clamping the pipeline, three-point monitoring is completed through cooperation of the probes, clamping and limiting of a large pipeline are achieved through the probes between the clamping seats, and the ultrasonic non-destructive detector is simple in structure and convenient to use. And the influence caused by easy sliding of the detection point during use is avoided.

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.