21 results about "Polarization phenomenon" patented technology

The invention provides a flexible electromagnetic shielding material and a preparation method thereof. The electromagnetic shielding material sequentially comprises a first conductive layer, a composite wave absorbing layer and a second conductive layer. The first conductive layer and the second conductive layer each include a thermoplastic resin and a conductive material. The composite wave absorbing layer is formed by mixing at least 80-110 parts by weight of epoxy resin, 20-30 parts by weight of filler and 5-10 parts by weight of a rare earth-based metal organic framework, the electromagnetic shielding material is arranged to be of a layered structure, when electromagnetic waves make contact with the first conductive layer, induction current can be generated on the surface of the first conductive layer, the electromagnetic waves are reflected through the high conductivity of the induction current, and therefore the electromagnetic shielding material can be used for shielding the electromagnetic waves. Meanwhile, unreflected electromagnetic waves can enter the composite wave absorbing layer in a transmission manner, the rare earth-based metal organic framework can generate a polarization phenomenon under the action of the electromagnetic waves and further absorb the electromagnetic waves, and when the electromagnetic waves are not completely absorbed in the composite wave absorbing layer, the second conductive layer can further reflect the electromagnetic waves and the electromagnetic waves are absorbed by the composite wave absorbing layer.

The utility model discloses special equipment for finishing screw heads, which relates to the technical field of screw head finishing and comprises a base, an electroplating tank is fixedly mounted on the top surface of the base, electric telescopic rods are fixedly mounted on two outer sides of the electroplating tank, and an assembly plate is fixedly mounted at the top end of each electric telescopic rod. The rotating shaft rotates to drive the cam to rotate, and the spring telescopic rod is matched to drive the electroplating basket to vibrate up and down in a reciprocating manner, so that the contact area between the screw head and electrolyte is increased, the electroplating uniformity of the screw head is improved, self-circulation of the electrolyte in an electroplating tank is realized, the flowing of the electrolyte is increased, and the concentration polarization phenomenon of the electrolyte can be effectively avoided.

The application discloses a new energy automobile electronic vacuum pump, an automobile and an energy recovery method, and belongs to the field of new energy automobiles. The electronic vacuum pump generates variable vibrations during work. The variable vibrations generated by the main body of the electronic vacuum pump are converted into variable forces acting on the surface of a piezoelectric energy feedback device through the transmission of a vacuum pump rubber pad. The piezoelectric energy feedback device generates an electric polarization phenomenon under the action of the variable forces, and then generates an induced current. The induced current is transmitted to an external energy recovery unit. On the one hand, the vibration of the electronic vacuum pump is relieved through the elastic deformation of the vacuum pump rubber pad. On the other hand, a second layer of damping effect is achieved through a magneto-rheological damper, so that the vibration sensation is effectively reduced. The application is novel and reasonable in design, and is convenient to use. The application reduces the working vibration and noise of the electronic vacuum pump, improves the riding comfort, recovers part of the vibration energy of the vacuum pump during the working process, is green and energy-saving, and is convenient to use and popularize.

The invention discloses a polarization image reconstruction method based on an adaptive sparse attention mechanism and a cross-scale fusion network, and belongs to the technical field of image processing. The method comprises the following steps: acquiring a to-be-reconstructed color polarization filter array image R, and carrying out preprocessing operation on the R to generate a half-resolution panchromatic polarization image; inputting the trained double recursion pipeline model to obtain a reconstructed polarization image; wherein the double-recursion pipeline model comprises a first residual module and a second residual module of a backbone network sub-module fused with a sparse attention mechanism. According to the method, accurate modeling of a complex polarization phenomenon is achieved, and meanwhile calculation redundancy is remarkably reduced.

The utility model discloses a cathode frame for eliminating concentration polarization and an electrolysis system, which are particularly suitable for metal electrolytic refining in the electrochemical industry. The cathode frame comprises a frame main body and a cathode chamber, a cathode liquid distribution device is arranged on the frame main body, and cathode liquid is injected into the cathode chamber from the lower part of the cathode plate through a liquid outlet, so that the concentration polarization phenomenon is effectively eliminated. The liquid outlet can be provided with a long gap or a plurality of holes which are flexibly arranged on the liquid outlet component so as to adapt to different electrolysis processes. The liquid inlet pipe extends to the bottom cross beam along the lateral stand columns, so that stable supply of cathode liquid is ensured. The electrolysis system comprises an electrolytic bath and a detachable cathode frame, efficient and uniform electrolyte circulation is achieved, and the electrolysis efficiency and the cathode product quality are improved. The device is simple in structure and easy to install and maintain, the production cost and the energy consumption are remarkably reduced, the purity and the crystallization quality of electrolyzed products are improved, and the high-standard production requirement is met.

The invention provides a water level detection circuit with an anti-polarization function. The water level detection circuit with the anti-polarization function comprises a control circuit, a charging and discharging circuit, a voltage comparison circuit and an output signal isolation circuit, the charging and discharging circuit is used for being connected with a probe, one end of the charging and discharging circuit is connected with the control circuit, the charging and discharging circuit is used for receiving an excitation source output by the control circuit, and the excitation source is alternating-current square waves; one end of the voltage comparison circuit is connected with the other end of the charging and discharging circuit, and the voltage comparison circuit is used for receiving an analog signal of the charging and discharging circuit and converting the analog signal into a square signal; one end of the output signal isolation circuit is connected with the other end of the voltage comparison circuit, the other end of the output signal isolation circuit is connected with the control circuit, and the output signal isolation circuit is used for outputting the isolated square wave signal to the control circuit; wherein the control circuit detects the water level according to the square wave signal. The electrolytic polarization phenomenon of the probe can be avoided, and the accuracy of water level detection is improved.

The invention relates to the technical field of projectors, in particular to a projector polarization phenomenon detection method, device and equipment and a medium, and the method comprises the steps: obtaining a projection picture image projected to an LCD panel by a projector, preprocessing the projection picture image, obtaining a target projection picture image, and obtaining the polarization phenomenon of the projector based on a preset image algorithm; and performing feature analysis on the target projection picture image, determining the LCD polarization degree of the projector, and determining whether the projector has a polarization phenomenon according to the LCD polarization degree. It can be seen that according to the method, the preset image algorithm is used for conducting feature analysis on the target projection picture image, the LCD polarization degree of the projector is determined, whether the polarization phenomenon occurs on the projector or not is rapidly and accurately determined according to the LCD polarization degree, and therefore the detection success rate is guaranteed, the projection picture quality is improved, and the user experience feeling is enhanced.

The utility model discloses an anti-polarization liquid level detection circuit, and relates to the technical field of liquid level detection, the liquid level detection circuit comprises a control module, an interface module and an anti-polarization liquid level detection module, the control module is respectively connected with the interface module and the anti-polarization liquid level detection module, and the interface module is connected with the anti-polarization liquid level detection module. The control module achieves liquid level detection and prevents electrode polarization by controlling the potential direction and the power supply time of the electrode in the anti-polarization liquid level detection module, the polarization phenomenon caused by the fact that the electrode is in a single potential for a long time is effectively avoided, and the performance of the liquid level detection system is improved.

This invention provides a system and method for online health status monitoring of iron-chromium redox flow batteries by decoupling asymmetric polarization data. Belonging to the fields of electrochemical energy storage technology and battery state monitoring technology, the system includes a main operation module, a polarization decoupling module, and a data analysis module. Through innovative system configuration and data analysis methods, this invention achieves multi-level, quantitative decoupling of complex polarization phenomena within the battery, thereby accurately linking macroscopic state-of-the-art (SOH) degradation to microscopic electrode reactions and transport processes, providing precise and in-depth data support for battery health management.

The utility model relates to the technical field of pole piece coating, especially to a kind of coating drying equipment based on the principle of ultrasonic transduction to improve coating uniformity, it includes: coating back roll, it is used to contact with pole piece substrate;Coating unit, it is used to apply coating slurry to pole piece substrate located on the roll surface of coating back roll;Drying mechanism, it is used to dry and solidify after coating pole piece substrate;Ultrasonic vibration mechanism, it is set between coating unit and drying mechanism and is used to drive coating slurry on pole piece substrate to vibrate.The application has the effect of improving the consistency of pole piece active substance load, improving the balance of battery charge-discharge reaction rate, reducing polarization phenomenon, prolonging battery cycle life.

The application relates to the cable technical field and discloses an anti-corrosion fireproof cable which comprises an outer protective layer and a bottom shell, the inner part of the outer protective layer is provided with three insulation shielding layers, the sections of the three insulation shielding layers are in contact, the inner part of each insulation shielding layer is fixedly connected with an XLPE insulation layer, the inner part of the XLPE insulation layer is sleeved with a conductor shielding layer, the inner part of the conductor shielding layer is provided with a conductor, and the bottom of the outer protective layer is fixedly pasted with the bottom shell; during cable laying on the ground, the bottom shell is in contact with the ground, when the cable is extruded by external objects, the bottom shell is deformed, the supporting block, the round rod and the disc move downwards, the spring is compressed, the bottom end of the disc is extruded on the piezoelectric ceramic, the piezoelectric ceramic is deformed under the action of force, polarization phenomenon is generated in the piezoelectric ceramic, the medium surface is electrified, the indicating lamp can be lighted, thus, whether the cable is extruded can be judged by observing whether the indicating lamp is lighted by the staff.

The invention discloses an HPV-E6 protein three-signal output immunoassay method based on near infrared laser induction. According to the immunization method, an integrated paper base is used as a magnetoelastic chip, and Cu NCs (at) MnO2 is used as a multifunctional probe. The efficient photo-thermal conversion efficiency of the Cu NCs (at) MnO2 is utilized to convert light energy into heat energy, and output of temperature signals is achieved. And secondly, the Cu NCs (at) MnO2 has good laccase catalytic activity and can catalytically oxidize 2, 4-dichlorophenol (2, 4-DP), so that an oxidation product of 2, 4-DP and 4-aminoantipyridine (4-AP) react to generate a red substance, and color visual output is realized. Besides, the Cu NCs (at) MnO2 has excellent microwave absorption performance, and dielectric loss and interface polarization phenomena exist between the Cu NCs (at) MnO2 and the Cu NCs (at) MnO2, so that the change of a frequency signal can be caused. Under the irradiation of 808 nm near-infrared laser, the colorimetric amplification and the amplification of temperature and frequency signals are realized. The multi-signal output immunoassay method based on near-infrared laser induction based on the series of phenomena is successfully constructed. The immunoassay has a relatively wide application prospect in early diagnosis of diseases.

The invention relates to the technical field of antireflection films, in particular to a vehicle-mounted laser radar window depolarization antireflection film and a preparation method thereof.The vehicle-mounted laser radar window depolarization antireflection film comprises a first SIO2 film layer used for being plated on a vehicle-mounted laser radar window, and the first SIO2 film layer is sequentially plated with a first TIO2 film layer, a second SIO2 film layer, an Al2O3 film layer, a second TIO2 film layer, a third SIO2 film layer and an antifouling AS film layer. The device is simple in structure, can achieve a good effect of eliminating polarization (reducing the difference between P-polarized light and P-polarized light) in an incidence angle range of AOI = 0-60 degrees, also can achieve an anti-reflection effect, solves the interference of a 0-60-degree incident light polarization phenomenon of a laser radar window on a laser radar, and improves the performance of the laser radar. And the optical signal stability and the real environment sensing capability of the laser radar system are improved.

The present invention relates to a multi-device ad-hoc network communication method, device, and storage medium. By collecting the magnetic field intensity vector of the device in real time and calculating the magnetic field gradient tensor, a medium polarization intensity distribution map is generated, which can accurately monitor and analyze the polarization phenomenon. When the detected polarization angle deviation exceeds the threshold, the system can respond quickly and automatically send a polarization compensation instruction to the relevant device. By extracting the multipath components and the historical polarization residual components, the failure of traditional channel estimation methods is avoided, and the prediction and compensation capabilities of the channel are optimized. The combination of the establishment of a dynamic compensation codebook and the phase pre-compensation technology uses the symbol error feedback from the receiving end to optimize the phase adjustment process and improve the compensation accuracy. By constructing a polarization memory attenuation prediction model, the channel state change can be learned and predicted in real time, providing an efficient compensation strategy for the system, adapting to the communication needs of each device, ensuring the stable transmission of signals, and improving the communication performance and reliability of the system.

The invention discloses a chiral hybrid perovskite piezoelectric crystal material and a preparation method and application thereof, and belongs to the technical field of functional hybrid materials, and chiral organic amine (R)-(+)-3-amino quinuclidine dihydrochloride is used as a ligand to prepare a non-centrosymmetric chiral hybrid perovskite piezoelectric crystal. When a vibration exciter and ultrasonic waves are adopted to act on the surface of the prepared non-centrosymmetric chiral hybrid perovskite piezoelectric crystal material, a polarization phenomenon occurs in the crystal, positive and negative charges appear on two opposite surfaces of the crystal at the same time, and the magnitude of a voltage signal generated by the crystal can be observed by connecting an oscilloscope. And when the external force is removed, the crystal recovers to an uncharged state, and the reading of the oscilloscope is zero, thereby proving that the prepared chiral hybrid perovskite piezoelectric crystal material has a piezoelectric property. In addition, the chiral hybrid perovskite piezoelectric crystal material prepared by the invention has relatively high thermal stability.

The invention discloses a power transmission line wire icing water drop capture rate calculation method, system and device and a medium, and belongs to the technical field of power system power transmission line icing prediction.The method comprises the steps that data are collected, and a stress model of water drops near a live wire under the multi-source mechanical effect is established; establishing a water drop motion equation according to the influence of force on water drop motion in combination with the stress model; setting a water drop initial position and initial speed boundary condition, and solving the water drop motion equation by adopting a numerical method to obtain a water drop motion track; and performing statistical analysis according to the motion trail of the water drops, and calculating the capture rate of the ice-coated surface of the wire to the water drops. According to the method, six kinds of acting force such as electric field polarization force, viscous force, gravity, buoyancy, wind power and corona wind power are comprehensively considered, a complete water drop stress model is established, the polarization phenomenon of water drops in a non-uniform electric field is deeply analyzed, the influence of the polarization force on the motion trail of the water drops is accurately calculated, and the calculation precision and stability are remarkably improved.

The invention discloses a physical layer security policy design method based on multistage polarization and sub-channel mapping. The method comprises the following steps: S1, constructing a system model; s2, designing a multi-stage polarization assisted physical layer security policy; s3, designing a physical layer security policy assisted by sub-channel mapping; and S4, verifying the validity of the strategy through data simulation. According to the method, the channel characteristics of the equivalent sub-channels are described more accurately by jointly considering the multi-stage polarization phenomenon, the sub-channel characteristics are used for subsequent polar code construction, the polar code construction result is used as a physical layer security key, and the system reliability is improved while the system security is improved. Besides, a sub-channel mapping step is added before polar code construction, so that the arrangement sequence of the sub-channels is more matched with the polar code construction process of a legal link, and the security and reliability of the system are improved.

The utility model discloses a polarized kaleidoscope, which comprises a lens cone, a kaleidoscope core, a polarized component, a convex lens component, a hole tube and a polarization component. By means of the polarization phenomenon of light, different color changes can be observed by rotating the hole pipe, and the texture and color changes of an observed object can be seen more clearly by further magnifying the image through the convex lens assembly. The kaleidoscope ingeniously combines the polarized light principle and the microscopic observation technology, not only enriches the visual effect of the traditional kaleidoscope, but also endows the kaleidoscope with education and teaching values, and is low in cost and convenient to popularize.

The invention belongs to the technical field of graphene desalination, particularly relates to an integrated desalination device and method based on a graphene flat sheet membrane, and aims at solving the problems that an existing supporting frame is not firm in fixation, poor in membrane pollution prevention and control effect and serious in concentration polarization phenomenon. A clamping mechanism is arranged in the shell and used for fixing the porous supporting frame, the device is provided with a vibrating mechanism, the vibrating mechanism drives the porous supporting frame to do micro-amplitude reciprocating motion through magnetic repulsive force and assists pollutant stripping during backwashing, a water storage tank is arranged on one side of the device, and a pulse mechanism is arranged on a water inlet path of the water storage tank. Pulse water flow is formed through intermittent closed water inflow and injected into the shell, raw water flowing through the graphene separation layer generates turbulent flow, the device can effectively slow down accumulation of salt and pollutants on the surface of the membrane, and the stability of the desalination process and the cleaning efficiency of the membrane are improved.

The invention relates to the field of preparation of photoelectric functional crystal materials, and particularly discloses a high-stability transparent ferroelectric phase potassium tantalate niobate linear electro-optical crystal and a preparation method thereof. According to the method, a thermal control treatment process combining rapid cooling and slow cooling is adopted, and the size and orientation of nano polar microcells (PNRs) in the crystal are accurately regulated and controlled, so that the PNRs are spontaneously reconstructed to form a single domain state with consistent orientation, and the traditional multi-domain opaque ferroelectric phase KTN crystal is converted into a transparent state. Compared with a traditional high-voltage polarization method, the thermal control treatment process disclosed by the invention can realize single domain of the crystal without an external electric field, so that the crystal is kept transparent for a long time, and the depolarization phenomenon is effectively inhibited. The prepared KTN crystal has excellent thermal stability, high response frequency and ultrahigh linear electro-optical coefficient, the performance of the KTN crystal is remarkably superior to that of a commercial lithium niobate crystal, and the KTN crystal can be widely applied to the fields of electro-optical modulation, electro-optical deflection and the like.

The utility model discloses a polarized light interactive display device, which comprises a support frame assembly, a polarization display assembly and a touch interactive assembly, wherein the support frame assembly is detachably provided with the polarization display assembly and the touch interactive assembly; the polarization display assembly comprises a rhombic polaroid, a backboard polaroid, a diffusion plate, a steering engine and a lamp strip. The polarization display assembly is used for demonstrating the polarization phenomenon. The touch interaction assembly comprises a guardrail and a touch screen assembly, and the touch interaction assembly is used for watching instructions and touch interaction. According to the utility model, the polaroids are spliced into the large integral backboard polaroid, so that the use and maintenance cost is reduced, demonstration videos are watched and interactive scenes are selected through the touch screen, then the steering engine drives the rhombic polaroid to rotate under the control of a program, a polarization art graph is automatically demonstrated, and the whole device is convenient to operate and the demonstration effect is visually watched. And long-term stable operation can be realized.