25results about How to "Undisturbed" patented technology

The invention discloses a sulfydryl-functionalized high-performance chitosan homogeneous membrane which is prepared by taking chitosan and polyvinyl alcohol as substrates, L-cysteine as a modifier and tris (2-carboxyethyl) phosphine hydrochloride as a reducing agent through a non-solvent induced phase inversion method. Therefore, the inventor also establishes a preparation method of the chitosan homogeneous membrane as a binding phase of a thin film diffusion gradient technology. Finally, the thin film material with high adsorption capacity and rapid adsorption on mercury is innovatively prepared, and the DGT device taking the thin film material as a binding phase can rapidly, highly selectively and stably enrich mercury in a water body and is not interfered by other heavy metal ions; the technical problem that a biological membrane grows on the surface of a traditional DGT device due to long-time enrichment to interfere with accurate determination of mercury is successfully solved, the DGT technology is expanded to the field of complex determination of the concentration of trace Hg (II) in water, and the purpose of efficient, rapid and accurate determination is achieved.

The strawberry grading cleaning device comprises a cleaning machine and a buffering belt, the buffering belt is arranged at the bottom end of a discharging port of the cleaning machine, supporting plates are fixed to the two sides of the bottom end of the buffering belt, cleaning pieces are arranged on the inner sides of the supporting plates, vertical rods are fixed to the two sides of the bottom end of the buffering belt, and the vertical rods are arranged on the bottom end of the buffering belt. The outer wall of the vertical rod is sleeved with a spring, the top end of the spring is connected with the bottom end of the buffer strip, the bottom end of the outer wall of the vertical rod is sleeved with a sleeve, the top end of the sleeve is connected with the bottom end of the spring, an auxiliary part is arranged on the inner side of the sleeve, and a supporting seat is fixed to the inner side of the auxiliary part. A clamping groove is formed in the top end of the supporting base. The cleaning pieces are arranged on the inner sides of the supporting plates on the two sides of the bottom end of the buffer strip, the cleaning ends of the scraping plates are always attached to the surface of the buffer strip through the scraping plates and the torsion springs on the rotating blocks, and juice and impurities adhering to the buffer strip due to strawberry damage can be effectively cleaned in time.

The application discloses a FBG type wearable fingertip three-dimensional force sensor for traditional Chinese medicine and a three-dimensional force measuring method, and the sensor comprises a fingertip, an elastic body, a fixed finger sleeve and a plurality of optical fibers; the fingertip is a force collector of the FBG type wearable fingertip three-dimensional force sensor for traditional Chinese medicine; the first end of the elastic body is connected with the fingertip, receives the force transmitted by the fingertip and generates deformation; the second end of the elastic body is connected with the fixed finger sleeve and is used for wearing on a finger; the plurality of optical fibers are uniformly arranged on the elastic body and generate deformation in X, Y and Z directions under the deformation of the elastic body, so that the three-dimensional force of the fingertip is obtained. The sensor adopts the FBG, no current passes through the optical fiber, and no electrical connection is needed; the force sensing system is not disturbed by electric noise and electromagnetic interference; the sensing element has small size and light weight, high precision, zero drift, wide frequency response and good high-temperature performance.

This utility model discloses a multilayer chip common-mode inductor, relating to the field of electronic devices. It includes a protective housing with electrode terminals inserted into its left and right sides. Multiple first ceramic plates are installed between a pair of upper and lower protective housings, and second ceramic plates are positioned between the first ceramic plates. After the multiple first ceramic plates are stacked, protrusions are inserted into corresponding positioning slots. Arc protrusions at corresponding heights engage with anti-detachment slots on the positioning ceramic plates, preventing the multiple first ceramic plates from detaching. Multiple C-shaped coil traces are installed in mounting slots, and connecting posts are installed in clearance holes, maintaining the multiple C-shaped coil traces in a staggered, symmetrical stack, saving space and preventing interference between them. After sintering, the multiple first and second ceramic plates form a single unit, jointly protecting the internal C-shaped coil traces. This design prevents misalignment during pre-sintering movement, which could affect the quality of the common-mode inductor.

Disclosed is a method for processing the splash product of femtosecond laser ablation of metal, which comprises the following steps: spraying a metal on a glass sheet to form a metal spraying surface i The test is carried out under different conditions of the distance between the sample surface, and the splashes are collected; the morphology and distribution of the collected splashes on the three glass sheets are observed under a high-resolution SEM, and the number and distribution of Si elements and Mi metal main elements are analyzed by using an EDS element area scanning method; the number and distribution information of the laser ablation splashes of the Mi sample collected on the glass sheet are obtained; the divergence angle β of the laser ablation spray beam is determined; the number SUM of the collected metal splashes is determined; and the particle size distribution N(μ,σ) of the collected metal splashes is determined. The method can effectively collect the splashes generated in the process of femtosecond laser ablation of refractory metal, analyze the distribution characteristics, is simple to collect, can obtain much information, and has high analysis precision.

The present application relates to the field of hollow detection, in particular to a kind of outer wall hollow ceramic tile detection device, the present application includes unmanned aerial vehicle body, unmanned aerial vehicle body bottom is fixedly connected with infrared imaging component;Unmanned aerial vehicle body bottom is fixedly connected with blow gun assembly, blow gun assembly is used to output normal temperature airflow and hot airflow, the airflow output port of blow gun assembly is equipped with blow nozzle assembly, blow nozzle assembly includes concentration nozzle, diffusion nozzle and driver, driver is used to drive concentration nozzle, diffusion nozzle and blow gun assembly airflow output port pairing, concentration nozzle is used to converge fluid, diffusion nozzle is used to uniformly diffuse fluid;Blow gun assembly is used to utilize concentration nozzle to output normal temperature airflow and locally lower the temperature of ceramic tile surface, blow gun assembly is also used to utilize diffusion nozzle to output hot airflow and uniformly heat ceramic tile.Using the technical scheme of the present application, the interference of uneven environmental warming on the detection result under natural conditions can be reduced.

The application discloses a laser scanning projection synchronous signal correction device and method, which comprises a controller, a first synchronous signal line and a second synchronous signal line; a laser scanning projection device, which comprises a scanning galvanometer and a light outlet; the scanning galvanometer is connected with the second synchronous signal line and changes different angle light beams under the control of the controller and projects out from the light outlet; and an optical sensing device, which comprises a beam splitter, a lens group and a linear sensor; the beam splitter is arranged corresponding to the light outlet of the laser scanning projection device; the beam splitter reflects the light beam of the light outlet and reflects it to the lens group; the lens group focuses the light beam and focuses it to the linear sensor; when the linear sensor detects the focused light beam, it outputs a signal Opt-Sync to the controller through the first synchronous signal line; and the controller outputs a synchronous signal to the scanning galvanometer.

The utility model provides a kind of automatic wire coiling mechanism with variable winding diameter, including carousel assembly, wire feeding mechanism and wire coiling variable diameter assembly;The carousel assembly includes carousel structure, and wire coiling groove assembly is equipped in carousel structure, and its upper is provided with the connecting fixture for fixed connector;The wire feeding mechanism is arranged in the side of carousel assembly, for carrying and guiding wire rod;The wire coiling variable diameter assembly includes displacement execution mechanism and drive mechanism, the drive mechanism is connected with displacement execution mechanism, and displacement execution mechanism is connected with wire coiling groove assembly, and the displacement execution mechanism can drive wire coiling groove assembly reciprocating movement along the radial direction of carousel structure;The carousel assembly is integrally installed on hollow rotating platform, and realizes winding operation by rotating drive. The utility model realizes the automatic adjustment of winding diameter in cable coiling process, improves production automation level, production efficiency and dimensional accuracy.

The utility model provides a kind of respirator with air pressure warning effect, comprising: respirator body, warning assembly is fixedly installed in respirator body surface one side, and respirator body surface other side is threadedly connected with breathing nozzle.This kind of respirator with air pressure warning effect, by being provided with output interface, warning assembly, breathing nozzle and the like structure, output interface is as gas source connection pivot, ensure that external gas is stably accessed and shunts transmission, provide basis for overall operation;Warning assembly cooperates through each component, real-time monitoring air pressure and with intuitive way feedback state, both through barometer to show specific value, and with the flicker and extinguishing of LED lamp to transfer safety signal;Breathing nozzle then guarantees breathing smooth and stable use, each structure division of labor is clear and linkage cooperation, both satisfy the air supply and breathing demand when diving, can also monitor air pressure and timely warning, greatly improve use safety and operation convenience, adapt to the use demand of complex environment under water.

This invention discloses a novel fluorescent probe for the detection of hydrazine hydrate, its preparation method, and its application, belonging to the field of fluorescent probe technology. The novel fluorescent probe provided by this invention uses a hemicyanine dye derivative as the fluorophore; simultaneously, the thiophene ester in the novel fluorescent probe serves as a specific recognition group for N2H4. On the one hand, its electron-withdrawing effect can efficiently quench the fluorescence of the hemicyanine dye derivative, making the probe "fluorescently silent" when not in contact with the target analyte; on the other hand, its unique structure endows the probe with excellent selectivity and sensitivity, ensuring specific recognition of N2H4. Furthermore, this novel fluorescent probe exhibits advantages such as high accuracy, high sensitivity, immunity to interference from various amino acids, common cations and anions, and good specificity when used for the quantitative detection of N2H4. It also has good pH adaptability and water solubility, thus showing promising application prospects in the detection of hydrazine hydrate.

The application belongs to the field of detection, and specifically discloses a fluorescent probe, a preparation method and application thereof; the fluorescent probe comprises a compound shown in formula (I). 2+ The fluorescent probe has high sensitivity and selectivity, is not interfered by other metal ions, has a short detection time, can be detected within 30 min, can be detected completely within 30 s at most, can realize visual detection when applied to a test strip, and can be applied to the detection of Hg 2+ in environmental samples, such as actual water samples and soil samples.

The utility model relates to the field of fixed distance distribution, especially a test paper fixed distance distribution device, including work table, conveying module, conveying module fixed mounting is at the top left end of work table, lifting module, lifting module sets up multiple, lifting module symmetry fixed mounting is at the top right end of work table before and after, and distribution module, distribution module rotation installs in the one end of lifting module mutual close, distribution module is used for cutting test paper, lifting module is used for moving distribution module up and down, when carrying out test paper fixed distance distribution, test paper is conveyed to the bottom of distribution module through conveying module, then makes distribution module move down through lifting module, carries out cutting to test paper, and adjusts width through distribution module, to realize the cutting under different width.

The application provides a filter screen life detection method and device, a medium and an air purification equipment. The method comprises the following steps: acquiring a first dust concentration, a first formaldehyde concentration, a first temperature and a first humidity of an air inlet, and a second dust concentration, a second formaldehyde concentration, a second temperature and a second humidity of an air outlet; calculating a dust purification efficiency of the filter screen by using the first dust concentration and the second dust concentration, and calculating a formaldehyde purification efficiency of the filter screen by using the first formaldehyde concentration and the second formaldehyde concentration; determining a life detection result of the filter screen based on the dust purification efficiency, the formaldehyde purification efficiency, a temperature change amount of the first temperature and the second temperature, and a humidity change amount of the first humidity and the second humidity. The dust concentration, the formaldehyde concentration, the temperature and the humidity of the air inlet and the air outlet are detected, so that the filter screen state can be accurately reflected, the accuracy of detection can be ensured, the user can be accurately and effectively reminded to replace the filter screen, and the user experience is improved.

This invention belongs to the field of cellulose acetate tow preparation technology, and discloses a method and system for preparing multifunctional cellulose diacetate tow. The method includes steps such as dissolving cellulose diacetate, mixing functional additives, and spinning. By controlling the opening and closing of control valves on the first and second conveying pipelines, the method selectively guides the filtered cellulose diacetate solution to a first spinning device for conventional spinning, and / or to a mixing device for mixing with functional additives, and then to a second spinning device for functional spinning. This preparation method and system not only meet the requirements of multi-path production of multifunctional cellulose diacetate tow, enabling the addition of different types and proportions of functional substances, but also accommodates conventional product production lines without affecting existing production lines and processes. The production line has the advantages of flexible production with elastic switching and rapid recovery.

The utility model discloses a portable unmanned aerial vehicle control terminal, which belongs to the field of unmanned aerial vehicle control terminals and comprises an unmanned aerial vehicle control terminal body, a touch display screen is arranged on the top surface of the unmanned aerial vehicle control terminal body, and an arranged protection mechanism is matched with the unmanned aerial vehicle control terminal body for use, so that the unmanned aerial vehicle control terminal body can be effectively prevented from being damaged in the carrying process. The problems that the touch display screen is cracked, broken and damaged due to collision and extrusion and is scratched due to friction with other articles, and normal use is affected are solved, meanwhile, when an operator needs to use the unmanned aerial vehicle control terminal, the protection plate can be rapidly moved away, information such as flight parameters and images on the touch display screen can be clearly checked, and the operation efficiency is improved. The unmanned aerial vehicle control terminal has the advantages that the unmanned aerial vehicle control terminal is not interfered by the display definition problem, the protection can be quickly closed when the unmanned aerial vehicle control terminal is carried, the touch display screen is protected, the safety of the touch display screen is improved, the normal use process of the unmanned aerial vehicle control terminal body is not affected, and the normal display function of the subsequent touch display screen is guaranteed.

This invention discloses a landslide extraction method based on an improved U-Net network using asymmetric convolution. The method includes: multi-source data construction comprising acquiring six-channel data containing DEM data, slope information, and variation characteristics of the target area from high-resolution remote sensing images; and model construction employing a U-Net network structure overall, with the encoder using asymmetric convolution instead of the original standard convolutional layers, and the decoder using dense upsampling. This application first extracts variation characteristics and then inputs them into the model for training. In the prediction stage of the deep learning model training, DEM + slope + variation characteristics are used as constraints for landslides, enabling deep learning to extract deep data connections such as complex relationships between landslides and slope surfaces. It creatively utilizes asymmetric convolution to more accurately extract features in different directions without being affected by rotating targets, improving the network's robustness to rotational distortion.

The application discloses a kind of self-adapting micro-doppler corner point feature extraction method and device, comprising: it is proposed to use micro-doppler corner point feature to realize through-wall radar human behavior recognition, and gives a kind of self-adapting corner point feature extraction method based on Gauss difference convolution filter and deformable convolution network;Micro-doppler corner point feature is defined as the point that gray scale sharply changes in different directions in radar square distance-time image and square doppler-time image, reflects the inflection point of human body limb node's motion trajectory curve, stationary point, curve intersection and boundary;The corner point feature extraction method proposed uses Gauss difference convolution filter to extract micro-doppler corner point supervision label on simulation data, then trains μD-CornerDet model using these labels;Inference stage, only μD-CornerDet model is used to obtain corner point feature map for measured data;The application verifies the effectiveness and robustness of the proposed method through numerical simulation and measurement.

This invention provides a method, apparatus, and electronic device for improving the fluidity of porous media using pulsating flow. The method includes: determining a critical threshold and a subcritical baseline; applying a steady-state displacement with a displacement intensity equal to the subcritical baseline, and superimposing a pulsating drive; using a solution framework to advance the interfacial motion of droplets under pulsating drive over time, adaptively controlling the time step during the advancement process, the time step being jointly limited by multiple physical constraints; determining the truncated axial net displacement of the droplet within the pore throat contraction structure within a fixed observation time window; obtaining the fluidity index corresponding to the pulsating drive based on the truncated axial net displacement; keeping the amplitude of the pulsating drive constant, changing the frequency of the pulsating drive to obtain a first curve of the fluidity index changing with frequency, and determining a cutoff frequency based on the first curve; changing the amplitude of the pulsating drive to obtain a second curve of the cutoff frequency changing with amplitude. This method is suitable for engineering parameter design and selection and is reproducible.

The utility model provides a kind of wafer motion system.The wafer motion system includes mounting seat;Wafer carrier plate (3), wafer carrier plate (3) is set above mounting seat;Clamping assembly, wafer carrier plate (3) is clamped and fixed on mounting seat by clamping assembly;At least 3 Z direction drive assembly, be set below mounting seat, and with mounting seat movably connected.The wafer motion system provided by the utility model can solve the problem that the existing wafer alignment equipment causes wafer carrier plate instability and wafer deviation during the process of wafer rising to the bonding position, resulting in wafer early alignment failure, bonding error and reduced wafer quality after bonding.

This invention discloses a broadband absorption structure with independently adjustable polarization frequency, belonging to the field of frequency-selective absorber technology. The structure comprises six alternating layers of ideal conductor PEC frequency-selective surfaces and three layers of F4B dielectric substrate. The frequency-selective surfaces are divided into lossy and lossless arrays. Both types of arrays consist of two orthogonal sublayers arranged in the same manner. All sublayers are printed on the dielectric substrate and isolated from each other by air layers. Both the lossy and lossless arrays integrate varactor diodes for independently controlling the transmission windows of TE-polarized and TM-polarized incident waves. This invention achieves true independent polarization frequency modulation, overcoming the shortcomings of traditional structures that cannot achieve independent polarization characteristics. It allows independent adjustment of the transmission frequencies of TE and TM polarizations without affecting the transmission and control response of cross-polarized waves.

The present invention relates to a liquid operated drilling device (1) for drilling a hole (100), where the drilling device (1) comprises: a hammer (9) for forming a hole by a rotational and percussive movement; a rotating device (50) for rotating the hammer (9); and a hollow drill rod (46) for connecting the rotating device (50) with the hammer (9) and for delivering pressurized liquid to the hammer (9) in order to generate an impact movement of a drill bit (24) of the hammer (9) wherein the hammer (9) comprises: a tubular body (10) having a hollow interior (12), an upper portion of which receives working pressure (PT) liquid and a lower portion of which is open to a back pressure (P0); an actuator cylinder X having a piston rod (15) extending therethrough inside the body (10), where the piston rod (15) acts as an impact piston (52) that uses a drill bit (24) in its lower portion (60); an oscillating valve mechanism (Y) based on a mechanical slide (76), comprising a valve channel leading into a working pressure space and a back pressure space, which alternately leads a working pressure PT and a back pressure P0 into a second space portion (42) of the piston; and a channel (23, 34) formed in the piston rod (15) for continuously conducting the working pressure PT through the piston rod (22) into a space portion (40) below the piston (32). According to the invention, there is at least one yielding part (26) between the upper part (22) and the lower part (60) of the piston rod (15) and a movement limiter (28) which limits the movement path of the upper part (22) and the lower part (60) relative to each other.

This invention discloses a signal intelligent control method and system for a multi-interface microcontroller, relating to the field of intelligent interface scheduling technology. It includes: S1: Setting a corresponding interface resource configuration template according to the operational requirements of each test mode, and obtaining the conversion probability corresponding to each candidate module through a mode prediction model, generating a corresponding switching request; S2: Managing the switching data stream corresponding to the switching request through a dual-active data buffer, and simultaneously performing multiple verifications on the first frame data in the switching data stream through set real-time data verification points; S3: Setting a corresponding digital twin model according to the interface resource configuration template corresponding to the target mode, obtaining the expected KPI value, and performing adaptive parameter adjustment based on the comparison result between the expected KPI value and the actual KPI data. This invention can predict upcoming test mode transitions in advance and generate pre-scheduling instructions, pre-allocating and preparing interface resources for the target mode.

The utility model relates to material processing technical field discloses dustproof sealed feeding device of double -step granulator unit, including main part assembly, including double -step granulator, the double -step granulator top is fixed with hopper, the double -step granulator bottom is fixed with base, feeding assembly, set up in double -step granulator, including feeding piece. The utility model has the beneficial effects that: adopt double feeding box from side alternation feeding in the feeding link, when one of feeding box carries out feeding operation, another is in the standby state, orderly switching of two, ensure the continuity of feeding process, and, after waiting for the feeding work all to complete, closed hopper can close immediately to form a relatively independent and sealed space, avoid all kinds of impurities mix into the hopper, guarantee the follow -up processing procedure not to be interfered with by impurity, effectively promote the quality of final product.

This invention belongs to the technical field of natural gas refueling equipment and discloses a mobile natural gas refueling device, including a fixed frame and a mobile natural gas pipeline. A cover plate located outside the mobile natural gas pipeline is bolted to one side of the fixed frame. Six connecting modules are arranged in a ring at equal angles inside the outer wall of the fixed frame. A movable module connected to the fixed frame is fixedly connected to the outside of the connecting modules. An active module fixedly connected to the fixed frame is connected to the outer end of the movable module. This invention achieves the purpose of quickly and stably sealing the pipeline connection area by setting up rotating modules and connecting modules in cooperation. Its lower end will abut against the abutment block, and the abutment block will move away from the connecting module, causing the second gear to rotate. The second gear causes the sealing plate to move in the opposite direction to the abutment block and gradually move towards the middle area of ​​the two mobile natural gas pipelines until it is completely sealed.

This utility model relates to the field of wireless target ranging technology, and discloses a non-contact wireless target ranging device, including a power supply box. A support plate is fixedly connected to the bottom left side of the power supply box. A groove is formed on the top right side of the support plate. A second protective box is fixedly connected to the top of the support plate. A movable baffle is slidably connected to the left side inside the second protective box. An energy block is fixedly connected to the top left side of the power supply box. A guide tube is fixedly connected to the left side of the energy block. The bottom of the energy block is fixedly connected inside the groove. A laser port is fixedly connected to the left side of the guide tube. In this utility model, the protective structure formed by the second protective box and the movable baffle can effectively block the intrusion of harmful gases, protect internal components, and, combined with a sealed design, resist the influence of extreme environments on the device, ensuring that signal transmission is not interfered with, and achieving high-precision measurement requirements in complex environments.