64results about How to "Improve interference" patented technology

The utility model relates to the field of air conditioner air outlet devices, in particular to a central air conditioner air outlet noise reduction device which comprises an air receiving barrel, a bucket-shaped air expanding cover, an air outlet cover, a noise reduction frame, an air direction guiding frame and a protection frame. A hopper-shaped air expanding cover is arranged at the lower end of the air receiving barrel, an air outlet cover is arranged at the lower end of the hopper-shaped air expanding cover, an embedded groove is formed in the end, away from the hopper-shaped air expanding cover, of the air outlet cover, and a noise reduction frame, an air direction guiding frame and a protection frame are sequentially arranged in the embedded groove. According to the air conditioner air outlet device, noise generated by airflow resonance is effectively reduced through the air expansion flow guide design of the hopper-shaped air expansion cover and the sound absorption cotton plate filling of the sound attenuation and noise reduction frame, airflow can be evenly and softly blown to a room through the design of the air direction guide frame, and the problems that airflow in a traditional air conditioner air outlet device is too strong and uneven in distribution are solved.

The invention provides a multi-component thin film evaporation film thickness monitoring and adjusting device and method and application, the multi-component thin film evaporation film thickness monitoring and adjusting device comprises a conveying module used for conveying a substrate so as to deposit a film layer on the moving substrate through a first evaporation source and a second evaporation source, the conveying module is provided with a position sensing module, and the position sensing module is used for sensing the position of the film layer on the moving substrate through the first evaporation source and the second evaporation source; a trigger signal is generated when the substrate enters the set area; the first film thickness monitoring module is used for acquiring the deposition speed of the first evaporation source and the thickness of a film layer deposited on the substrate; the second film thickness monitoring module is used for acquiring a reflection spectrum of the second evaporation source in a set area; and the control module is used for obtaining the film thickness according to the reflection spectrum of the second evaporation source through an inversion algorithm, and independently feeding back and controlling the real-time evaporation working condition. The thickness of materials with different evaporation rates is subjected to differential parallel monitoring, a closed-loop feedback system is formed, the film thickness monitoring accuracy is improved, and long-time operation of monitoring work is guaranteed.

The invention discloses an insulator for a direct current converter transformer and an online monitoring method thereof, and relates to the technical field of insulators. According to the insulator for the direct current converter transformer, the insulator body and the connection structure are internally integrated with a multi-stage state monitoring system comprising a first-stage sensing unit, a second-stage sensing unit and a third-stage sensing unit; according to the invention, three types of key state data of internal mechanical stress of the insulator, the connection state of the first metal accessory and the second metal accessory and the overall temperature distribution can be synchronously acquired in real time, real-time monitoring of the insulator and multi-dimensional comprehensive information acquisition are realized, early warning is realized based on the multi-dimensional comprehensive information, and the reliability of the insulator is improved. According to the method, preliminary early warning can be carried out according to single data, meanwhile, time-space alignment and comprehensive judgment can be carried out on multi-dimensional data, high-level fault early warning is carried out, the stability and reliability of the insulator are improved, and sudden faults are reduced.

The utility model provides a wire harness with a flame-retardant structure, which relates to the field of wire harnesses, and comprises an inner core assembly, the main body of the inner core assembly is a cable, and the outer side of the inner core assembly is wrapped with an inner insulating layer. In order to solve the problem that a corresponding flame-retardant structure needs to be arranged due to the fact that the cable is fractured when being worn and is easily subjected to detonation and other potential safety hazards when being connected with an external conductor at a high temperature, multiple insulation and shielding structures, namely an inner insulation layer, an outer insulation layer and a shielding layer, are arranged, so that the insulation performance and the anti-electromagnetic interference capability of the wire harness are greatly improved, and the service life of the wire harness is prolonged. The electric leakage risk caused by poor insulation is effectively reduced, the potential safety hazard of detonation caused by connection between high temperature and an external conductor is avoided, the safety performance of a traditional wire harness is innovatively improved, and the design of the spiral tensile assembly enhances the tensile capacity of the wire harness.

The application discloses a polyethylene pipe surface micro-defect real-time detection system based on machine vision, and relates to the technical field of monitoring and analysis, which comprises the following steps: constructing a dynamic deformation matrix by associating timestamp, three-dimensional height difference data and temperature drop gradient data; calculating the relative deformation rate corresponding to the unit temperature drop gradient data according to the dynamic deformation matrix; generating a bubble determination result when the three-dimensional height difference data represents inward collapse displacement, the relative deformation rate nonlinearly decreases with the increase of the temperature drop gradient data, and the difference value of the last section is lower than a preset stop threshold; generating an impurity determination result when the three-dimensional height difference data represents outward protrusion displacement, and the fluctuation variance of the relative deformation rate falls within a preset rigidity interval; establishing a corresponding relationship between the bubble determination result, the impurity determination result and the initial coordinates of the suspected target, and outputting detection result data. The application has the effect of improving the real-time detection efficiency of polyethylene pipe surface micro-defects.

The utility model provides a kind of multifunctional flip type mobile phone shielding box, including box and soundproofing module, box includes outer storehouse body and the flip of rotation connection in outer storehouse body, soundproofing module is composed of outer soundproofing layer and inner soundproofing layer, and inner soundproofing layer is equipped with the mobile phone accommodating cavity of accommodating, mobile phone accommodating cavity bottom is equipped with the sound interference collection recording interference module of interference sound and wireless charging module;Outer storehouse body inside is equipped with storage chamber, and soundproofing module is arranged in storage chamber, the inner wall of the chamber box is equipped with shielding component, when the flip is covered on outer storehouse body, the shielding component and soundproofing module hinder mobile phone accommodating cavity and the sound and signal transmission of outside. The utility model reduces the sound pickup effect of mobile phone to outside sound by recording interference, electromagnetic shielding and independent soundproofing module cooperation, improves the recording interference and electromagnetic shielding effect of shielding box.

The invention relates to the technical field of oil and gas fracturing flow-back fluid treatment, and particularly discloses a boron-doped diamond electrode electrooxidation system and method for treating fracturing flow-back fluid. According to the method for treating the fracturing flow-back fluid, before the fracturing flow-back fluid enters an electrooxidation unit, sulfide is efficiently removed, poison and competitive oxidation of the fracturing flow-back fluid to an electrode are eliminated, a BDD electrode is protected, a foaming agent is synchronously removed through aeration enrichment, the problem of foam interference in the flow-back fluid treatment process is fundamentally solved, and continuous and stable operation of a system is guaranteed; after the electro-oxidation unit, active chlorine (pypocholoride / chlorine) is effectively removed and recycled, so that waste is treated by waste, the oxidation efficiency is improved, and the dosage of chemicals is reduced. Through the collaborative design, the interference and foam problems of sulfide with high chloride ion content and strong reducibility are collaboratively optimized, and the treatment efficiency, economical efficiency and stability of the system are integrally improved.

The present application relates to the technical field of machine learning, and more particularly to a classroom student behavior detection optimization method based on deep learning, which extracts features from each frame of image of student video in the classroom, obtains corresponding high-dimensional semantic feature vectors, reduces the dimension of the high-dimensional semantic feature vectors of each frame of image, maps the three-dimensional feature vectors of each frame of image to a three-dimensional clustering space, obtains corresponding data points, filters the data points in the three-dimensional clustering space to obtain a target clustering space, and according to the multi-frame continuity similar features and the similar light environment features of any two data points, the distance measurement of any two data points in the target clustering space is enhanced and clustered, and a plurality of image categories are obtained, the deep learning model is trained using the plurality of image categories, and a trained deep learning model is obtained, which is used for classroom student behavior detection, and improves the interference ability and detection recognition accuracy of the deep learning model.

The utility model relates to fluid control technical field especially relates to a flow path control valve and fluid control device, including the support plate, the flow guide plate, the frame board and the bottom plate that form the overall structure in turn layering together along the thickness direction, the frame board has the opening part, still include the valve plate, the valve plate has the deformation part and the junction part that connect, the valve plate is fixed in the bottom plate through the junction part, and the outer peripheral edge of deformation part exists a part as the free area, and the deformation part can produce the elastic deformation under the pressure effect, the utility model discloses flow path control valve is advantageous to further promote the thin degree of the air leakage valve on one hand, the other hand makes the overflow passage formed after the deformation of deformation part not depending on the hole structure of deformation part can realize the communication of inlet hole and flow guide hole, and therefore deformation part can realize maintaining the overall structure, can better inhibit the risk that deformation part appears the deformation even the cracking because of setting the hole structure, ensure the stability and reliability of control valve work, improve the service life.

This disclosure relates to a camera module and an electronic device. The camera module includes: a first decorative member having an accommodating space for accommodating a first lens group of the camera module; wherein the first decorative member has a grounded conductive portion; a second decorative member disposed on the first decorative member and having a light-transmitting area aligned with the opening of the accommodating space; the second lens group of the camera module covering the light-transmitting area; and conductive adhesive disposed between the first decorative member and the second decorative member, and electrically connected to the conductive portion and the second decorative member respectively. By providing conductive adhesive and grounding it, embodiments of this disclosure can reduce electrostatic interference generated by the electrical portion of the second decorative member on the camera module, and also achieve connection stability between the first and second decorative members.

This application discloses a composite fixing structure for fixing a PCB, comprising: a carrier plate with multiple adsorption holes; a first abutment edge and a second abutment edge fixedly disposed on the periphery of the carrier plate; multiple pressure blocks disposed on the first abutment edge; a venting plate fixedly disposed below the carrier plate, the venting plate including a normally venting area and a first venting area; a first through hole in the first venting area selectively connected to or disconnected from a vacuum pump, and the first through hole in the first venting area opens or closes progressively from the side closer to the normally venting area to the side farther away from the normally venting area; and a pressure plate movably disposed above the carrier plate; the projection of the pressure plate on the carrier plate in a first direction is longer than the length of the carrier plate in the first direction, and the projection at least covers a portion of the first venting area. This composite fixing structure organically integrates vacuum adsorption and mechanical pressing, and can adaptively adjust the adsorption area and pressing position according to the PCB size, ensuring fixing reliability.

The application provides a method and device for planning drone swarm interference, electronic equipment and storage medium. The method comprises the following steps: constructing an interference planning objective function based on the path length and interference benefit of the drone swarm, and constructing an interference constraint condition based on a preset drone interference rule; determining an interference planning population of the drone swarm including at least one interference planning result based on the interference constraint condition and a target to be interfered; the interference planning result includes an interference path and an interference duration of at least one drone; determining a target interference planning result based on the interference planning population, a population expansion rule and a population selection rule; the population selection rule includes a rule for selecting based on an interference function value of each interference planning result calculated by using the interference planning objective function. According to the scheme, the interference path and the interference duration of the drone swarm are planned at the same time, the optimization of the drone path and the interference duration is realized, and the interference cost of the drone is reduced.

The utility model relates to the field of unmanned aerial vehicles, in particular to fixed unmanned aerial vehicle interference equipment, and aims to overcome the defects that in the prior art, the angle cannot be automatically adjusted, the direction cannot be automatically adjusted, and the interference range is small. The base is fixedly connected to the top of the fixing plate, and the top of the base is rotationally connected with a supporting column; the supporting plate is fixedly connected to the top of the base, and one side of the supporting plate is fixedly connected with a first motor; the first transmission shaft is fixedly connected to an output shaft of the first motor, and one end of the first transmission shaft is fixedly connected with a worm; and the transmission assembly is meshed on the worm. Furthermore, the transmission assembly comprises a worm gear meshed with the worm, a second transmission shaft is fixedly connected to the worm gear, the angle can be automatically adjusted, the direction can be automatically adjusted, and the interference range is expanded.

This invention discloses a hardware device and control method for automatic charging of robots, aiming to solve the technical problems of poor charging contact reliability, disconnect between software and hardware protection, and lack of authentication in existing technologies. The device includes a control unit (CMU), a contact quality detection sensor, and an independent hardware gate circuit. Furthermore, the device has a low-voltage wake-up function, actively outputting a small voltage supply when the robot's battery is depleted. The CMU is configured to perform a digital handshake for authentication and a contact quality check before main charging; main charging only starts after both are successful. The independent hardware gate circuit forcibly disconnects the main power switch when the CMU fails (e.g., fails to send a heartbeat signal). This invention significantly reduces the risk of charging-related safety accidents, improves charging connection stability, and avoids accidental charging of incompatible batteries through a dual-layer software and hardware protection closed loop.

The invention provides an optical microcavity dispersion measurement method based on dispersion linetype real-time calibration, which is applied to the technical field of microcavity dispersion measurement, and comprises the following steps: converting the position extraction of an optical sideband into the position extraction of a dispersion linetype, and demodulating the optical sideband through a frequency mixer to obtain a sideband harmonic peak of a specific dispersion linetype; adjusting the phase difference between a modulation signal and a demodulation signal of the high-stability radio frequency source, identifying the position of a dispersion line type sideband harmonic peak, and extracting the frequency interval of the sideband harmonic peaks on the two sides of each resonance mode; dynamically calibrating the optical fiber Mach-Zehnder interferometer based on the number of sinusoidal signal cycles in the frequency interval of the dispersion line type sideband resonance peaks on the two sides of each resonance mode to obtain a calibrated Mach-Zehnder interferometer; and generating a dispersion measurement result of the optical microcavity according to the calibrated Mach-Zehnder interferometer interference signal. According to the invention, the dispersion measurement precision and the automation level can be improved.

This utility model discloses an automatic loading and unloading device for metal quenching, including a lifting frame, a clamping frame below the lifting frame, a locking rod on the outside of the clamping frame, a locking sleeve on the outside of the locking rod, a releasing sleeve rotatably located on the outside of the locking sleeve, a top block on the outside of the releasing sleeve, a rotating sleeve slidingly located on the outside of the locking sleeve, an inclined block on the outside of the rotating sleeve, a push spring movably located on the outside of the locking sleeve, multiple moving blocks movably located on one side of the releasing sleeve, a moving sleeve located on the outside of the locking sleeve, an interactive plate on one side of the moving sleeve, a transverse plate on one side of the interactive plate, a configuration plate rotatably located on the outside of the locking sleeve, a configuration slot on the configuration plate, moving springs between the moving blocks, multiple locking blocks on the outside of the locking sleeve, a flexible groove on the inside of the rotating sleeve, a flexible block movably located in the flexible groove, and a locking frame on one side of the flexible block. This utility model realizes tool-free and convenient adjustment of the position of the clamping frame, while ensuring the structural stability of the clamping frame after the position is adjusted.

This invention discloses a method for preparing a spatially confined copper-based catalyst for activating persulfate degradation of organic pollutants in water: (1) Dissolve nano-oxide materials and carbon sources in a solvent, stir thoroughly, centrifuge, dry, and then calcine the resulting powder at high temperature. After cooling, etch with an etching solution, centrifuge, and dry to obtain spatially confined carbon spheres; (2) Disperse the spatially confined carbon spheres obtained in step (1) with copper salt and precipitant in water, centrifuge, dry, and then calcine the resulting powder at high temperature. After cooling, the spatially confined copper-based catalyst is obtained. This invention also includes the spatially confined copper-based catalyst prepared by the above method and its application in activating persulfate degradation of organic pollutants in water. By constructing a carbon sphere-CuO heterostructure catalytic structure with spatial confinement effect, the synergistic effect of spatial confinement, interfacial electronic coupling, and active sites is fully utilized, achieving multiple synergistic regulation of pollutant enrichment, rapid electron transport, and selective activation of persulfate. Compared with traditional copper-based catalytic systems, this invention can effectively regulate the generation pathway of reactive oxygen species, significantly improve the utilization efficiency of persulfate and the selectivity of pollutant degradation, and significantly enhance the stability, anti-interference ability and recycling performance of the catalyst. It can be widely used in the deep purification of recalcitrant organic pollutants such as pesticides, antibiotics, and phenols, as well as in the treatment of complex wastewater.

The application discloses a kind of automatic adjustment methods of adhesive film baking machine roller temperature, to solve the problem of existing roller temperature regulation exists lag and deviation.The method comprises: real-time acquisition of the working condition data of roller group;Based on the working condition data, call material flow property online identification model iterative calculation melt viscosity and solidification conversion rate, generate boundary constraint condition;Synchronous simulation heat conduction, heat convection and roller surface deformation process is constructed to digital twin multi-physics field coupling simulation model, pre-computes the temperature disturbance value of future control period;Temperature disturbance value and boundary constraint condition are input into composite control model, and the temperature set value is optimized using model predictive control algorithm rolling, and the control output is generated by adaptive disturbance observer to compensate for unmodeled disturbance;According to the priority of control output, dynamically allocate bus bandwidth, and issue temperature adjustment command to heating execution unit.The application realizes the advance compensation of roller temperature field distribution deviation, reduces the adjustment lag and deviation.

The utility model relates to the technical field of cell culture, and specifically discloses an online sterile filtering device for cell culture medium, which comprises: a liquid preparation mechanism; a filtering mechanism, which comprises a first filter and a second filter, the first filter is connected to the liquid preparation mechanism through a first pipeline, the first filter is connected to the second filter through a second pipeline, the second filter is externally connected to a third pipeline, and the first filter and the second filter are provided with filter cores; the third pipeline is connected to a first reactor; a functional mechanism, which comprises a steam pipeline connected to the first pipeline; and a control mechanism connected to the liquid preparation mechanism, the first filter, the second filter and the steam pipeline. The utility model realizes complete sterility of the second filter, and overcomes the defects of pollution hazards and incomplete cleaning in the online filtering of the cell culture medium in the prior art.

The application relates to the technical field of power electronics, and discloses a multi-mode redundant power supply system based on a bidirectional inverter power board, which comprises a topological structure acquisition module, which is used for acquiring a reconfigurable circuit topological structure; an optimal structure generation module, which is used for generating an optimal topological structure according to the reconfigurable circuit topological structure and a multi-parameter real-time monitoring system; a parameter acquisition module, which is used for dynamically adjusting control parameters under different temperature conditions according to a temperature characteristic model library; a predicted state acquisition module, which is used for obtaining a predicted state of the multi-mode redundant power supply system in a future time period according to a preset digital twin model; and a predicted control module, which is used for controlling the multi-mode redundant power supply system according to the predicted state. Through the fusion of multi-stage topological structures, wide-bandgap device characteristic optimization and digital twin technology, the application realizes efficient operation in a wide load range, strong adaptability under extreme environmental conditions and high reliability in long-term operation.

The invention belongs to the technical field of pressure measurement. The dynamic pressure sensor resistant to the temperature of 850 DEG C and excellent in temperature stability comprises a closed inner cavity defined by an upper shell, a middle shell, a lower shell and a diaphragm, and a piezoelectric sensitive assembly arranged on the inner side of the diaphragm. The piezoelectric sensitive assembly comprises an upper crystal group and a lower crystal group which are composed of high-temperature piezoelectric crystals, a mass block in the middle and thermal expansion matching ceramic chips at the two ends, and is axially pre-tightened through a bolt and nut assembly. The upper and lower crystal groups are output in parallel with opposite polarities to realize active acceleration compensation; the thermal expansion matching ceramic chip is made of YBP series ceramic, so that high-temperature thermal stress is effectively relieved; all metal pieces are made of 316L stainless steel and are sealed through laser welding, internal signals penetrate through the aluminum oxide ceramic tube through the electrode plates and the nickel wires to be led to the signal output contact pin, the sensor is provided with an active acceleration compensation and thermal expansion matching structure, and high-stability and high-sensitivity dynamic pressure measurement under the high-temperature severe environment is achieved.

This application provides a reference signal transmission method and transmission apparatus. The transmission method includes: obtaining, by a network device, reference information of a terminal device, where the reference information includes at least one of an identifier of the terminal device and scheduling information of the terminal device; determining, by the network device, a transmission parameter of a phase tracking reference signal PTRS of the terminal device based on the reference information, where the transmission parameter includes at least one of a sequence of the PTRS and a frequency domain position of the PTRS; and transmitting, by the network device, the PTRS with the terminal device based on the transmission parameter. According to the reference signal transmission method and transmission apparatus provided in embodiments of this application, interference to the PTRS can be randomized.

The utility model discloses a computer case easy to assemble, which belongs to the technical field of computer cases, and comprises a case frame and a plurality of case panels, the plurality of case panels are laid on the surface of the cuboid case frame, the case frame comprises a plurality of frame rods and a plurality of triangular joints, and the triangular joints are arranged on the frame rods. Each triangular connector is arranged at the vertex angle of the case frame and connected with three frame rods, panel connecting grooves capable of being connected with a case panel are formed in the frame rods, and a fan with the position capable of being adjusted is installed on the back of the case control panel through an adjusting assembly. The computer case has the advantages that the case body portion of the computer case is composed of the frame rods, the triangular connectors and the case panel, after the panel is laid on the case frame composed of the frame rods, the panel can be connected and fixed to the top corners of the case body through the triangular connectors and is tightly connected with the frame rods, and therefore the computer case is easy to assemble and splice, and the computer case is convenient to use. And convenience is provided for convenient assembly and use of the case.

This utility model discloses a quick-release mounting bracket for a vehicle infotainment system with a camera, relating to the technical field of quick-release camera mounting brackets. It includes a mounting bracket and a vehicle infotainment system body. The mounting bracket has a rotating assembly with a detachable clamping cavity inside. The camera assembly includes a connector and a camera body, with the connector clamped and fixed within the clamping cavity. The rotating assembly has a second conductive contact inside, and the connector has second conductive contact areas on both its front and rear sides. When the connector is inserted into the clamping cavity in either the forward or reverse direction, the second conductive contact elastically contacts and conducts electricity with the corresponding second conductive contact area, ensuring electrical connection of the camera assembly in any installation orientation. Users can directly pull the connector out of or insert it into the clamping cavity, enabling rapid replacement of the camera assembly. This utility model, through its double-sided contact structure, achieves plug-and-play quick replacement and bidirectional compatible installation of the camera assembly, offering convenient operation and reliable connection.

This invention relates to the fields of deep learning and medical imaging. More specifically, it relates to a method for fundus vessel segmentation based on multi-band wavelet decomposition and the Mamba architecture. In response to the acquisition of a fundus image, the fundus image is preprocessed to obtain an input image; the first feature map of the input image is decomposed into low-frequency approximation components and high-frequency detail components; the low-frequency approximation components are input into a low-frequency connectivity enhancement path, and a global topological scan is performed using a selective state-space model to extract long-distance connectivity features of the main vessels; the high-frequency detail components are input into a high-frequency detail refinement path, and a lightweight Mamba module is selectively activated through a sparse gating mechanism to scan and extract edge features of peripheral vessels; unlike existing technologies, this invention effectively solves the problems of existing technologies being unable to differentiate between main vessels and small vessels and struggling to maintain the connectivity of the vascular topology.

This invention discloses a dual-piezoelectric tube driven inertial motor and its control method, along with a scanning probe microscope, relating to the field of piezoelectric tube technology. The invention includes a base, a first piezoelectric tube, a second piezoelectric tube, and a U-shaped sliding body. The first and second piezoelectric tubes are parallel to each other along their axes, with one end fixed to the base and the other end free. The two parallel arms of the U-shaped sliding body, referred to as the left and right sliding rods, are elastically connected via a junction at the bottom of the U-shaped sliding body. The left and right sliding rods are coaxially inserted into the inner walls of the first and second piezoelectric tubes, respectively. This invention not only ensures that the two sliding rods consistently and stably abut against the inner cavities of their respective piezoelectric tubes, guaranteeing effective transmission of driving force, but also improves the overall mechanism's motion accuracy, load-bearing capacity, and anti-interference capability through the coordinated and alternating operation of the dual-drive piezoelectric tubes, laying a structural foundation for achieving high-precision and high-stability stepping motion.

The utility model discloses a DPIM half-bridge power module, the module is configured with a ceramic substrate, and a power chip, power pins and a control pin which are arranged on the ceramic substrate, the power pins comprise a direct current power pin P1, a direct current power pin P2 and an alternating current power pin P3; the power chip is used for building a half-bridge circuit, the direct-current power pin P1 and the direct-current power pin P2 are connected with a power supply end of the half-bridge circuit, the alternating-current power pin P3 is connected with an output end of the half-bridge circuit, and the control pin is connected with a control end of the half-bridge circuit; and the current power pin P1, the current power pin P2 and the alternating current power pin P3 are oppositely arranged. According to the half-bridge power module, the power pins are oppositely arranged, so that the mutual interference of electric fields among the power pins is reduced, and the anti-electromagnetic interference capability and reliability of the power module are improved.

This invention relates to a method for preparing high-performance, low-temperature-coefficient Sm-Co permanent magnet materials, belonging to the technical field of samarium-cobalt permanent magnet materials. It solves the problem in the prior art where the magnetic properties and temperature coefficient are difficult to balance due to the addition of heavy rare earth elements in 2:17 type samarium-cobalt magnets. The method includes: S1, preparing the alloy composition Sm according to a mass percentage... a Ho b Co c Fe d Cu e Zr f Where a, b, c, d, e, and f are the mass percentages of Sm, Ho, Co, Fe, Cu, and Zr, respectively, and satisfy the following conditions: 18≤a≤25, 1≤b≤5, 40≤c≤50, 19≤d≤24, 5≤e≤6, 2.5≤f≤3.5, and a+b+c+d+e+f=100; S2, induction melting and casting; S3, medium crushing; S4, sequentially pulverizing and sieving by fluidized bed jet milling, followed by ball milling under nitrogen protection; S5, magnetic field orientation and delayed pressure molding; S6, sintering, solution treatment, and aging treatment under micro-negative pressure. The magnet prepared by this invention has a room temperature remanence Br≥11kGs, and the absolute value of the remanence temperature coefficient |α|≤0.03% / ℃ in the range of 25~150℃, achieving a good balance between high remanence and low temperature coefficient, which can meet the long-term service requirements of precision instruments in a wide temperature range environment.

The application discloses a wideband communication signal anti-interference reconstruction method based on dictionary evolution and time-frequency block constraint, relates to the fields of communication signal processing and wireless anti-interference technology, and comprises the following steps: firstly, time-frequency block division is performed on a received wideband communication signal, and local structure features are extracted; then, a time-frequency block sparse representation model of the local structure features is constructed through a target signal dictionary and an interference signal dictionary; the time-frequency block sparse representation model is iteratively optimized, and a dictionary atom is updated according to a reconstruction residual corresponding to an optimization result; the iteration is repeated until a convergence condition is met; then, signal reconstruction is performed according to an obtained target signal dictionary and corresponding target signal sparse coefficients, and a time-domain wideband signal after anti-interference reconstruction is determined; the local continuity and structure stability of the wideband signal in the time-frequency domain are effectively utilized, the influence of dictionary mismatch on reconstruction performance in a complex interference environment is reduced, and the accuracy and stability of target signal recovery in a low signal-to-noise ratio, strong interference and non-stationary scene are improved.

The application relates to the field of communication energy saving, in particular to a repeater energy saving method, which comprises the following steps: obtaining a total received power according to the sum of the powers of multiple signals received by a repeater; judging whether the total received power is less than a preset first intensity threshold; if the total received power is less than the preset first intensity threshold, the repeater amplifies signals with a first gain; if the total received power is greater than or equal to the first intensity threshold, the repeater sends a test signal to a base station; obtaining an intensity average of the test signal; judging whether the total received power intensity average is greater than a test intensity threshold; if the total received power intensity average is greater than the test intensity threshold, the repeater amplifies signals with a second gain; if the total received power intensity average is less than or equal to the test intensity threshold, the repeater amplifies signals with the first gain; and the total received power first gain is greater than the second gain. The application has the effect of reducing the call drop rate.