21results about How to "Shield interference" patented technology

The invention relates to the technical field of metal pressure processing control, and discloses a rolling system for titanium alloy rod and wire composite production, which comprises a basic rolling unit, a rolling unit and a control unit, the signal synchronous acquisition module is used for acquiring the pressure and displacement of the hydraulic cylinder; the feature extraction and state arbitration module is used for judging a steady-state interval or an unsteady-state interval; the rheological impedance analysis module is used for resolving an instantaneous plastic rheological modulus in an unsteady state interval; high-frequency excitation is actively injected into a steady-state blind area through the micro-disturbance active detection unit, the steady-state rheological modulus is inversed through phase-locked demodulation logic, a sensing blind area caused by natural fluctuation deficiency of a traditional control system in an extremely steady state is avoided, the stability of the system is improved, the stability of the system is improved, and the stability of the system is improved. Full-time-domain accurate matching of rheological properties of the titanium alloy material is achieved, and under the condition that a heat compensation device is not needed in the whole line, the rolling problem of 5.0 mm extremely-small-specification wires and large-coil heavy coiled materials is solved.

The invention discloses a method for detecting lactoferrin in milk based on a competition method test strip, which comprises the following steps: coupling heparin molecules with bovine serum albumin to obtain a heparin molecule-bovine serum albumin artificial antigen; modifying gold nanoparticles by using an artificial antigen to form a gold label I, and constructing a competition method test strip by matching with a gold label II modified by mouse IgG (Immunoglobulin G); a milk sample is subjected to centrifugal fat removal, pH adjustment and casein precipitation pretreatment and then dropwise added to the test strip, and the LF concentration is calculated through a T line gray value and a working curve. Detection can be completed within about 10-15 min, specificity is high (interference of impure protein is avoided), on-site rapid quantitative / semi-quantitative detection of LF in milk can be achieved, the antiviral activity of LF can be indirectly reflected through the binding strength of heparin and LF, the method is suitable for production quality inspection, dealer sampling inspection and consumer self-inspection, and the detection sensitivity reaches 1 microgram / mL.

This invention discloses an automatic road surface smoothness detection system for road construction, belonging to the field of road construction quality inspection technology. The system includes: an image acquisition unit for real-time acquisition of original road surface images during asphalt paving and synchronous acquisition of paver vibration characteristic information corresponding to the original road surface images; a data processing module, communicatively connected to the image acquisition unit, for receiving the original road surface images and the paver vibration characteristic information, achieving smoothness detection through vibration adaptive image analysis technology, and outputting structured detection results; and a data output unit, communicatively connected to the data processing module, for receiving the structured detection results and realizing real-time display and anomaly warning during the asphalt paving process. It has the effects of adapting to the vibration state of asphalt paving construction, shielding against dust and high-temperature reflective interference, and improving the accuracy and real-time performance of smoothness detection.

The invention relates to the technical field of robots, and discloses soot blowing equipment of a robot, a soot blowing control method, equipment and a medium, and the equipment comprises a room body which is made of an electromagnetic shielding material and is used for providing magnetic field shielding for internal equipment and providing a staying position for the robot; the distribution box is arranged in the room body, and a controller and a communication module are arranged in a box body of the distribution box; the intelligent soot blowing device is fixed in the room body through an angle-adjustable mounting bracket, an air outlet of the intelligent soot blowing device faces the staying position of the robot, and the intelligent soot blowing device is electrically connected with a controller in the distribution box; wherein the controller is in communication connection with the robot through the communication module and is used for controlling the intelligent soot blowing device to be started to execute soot blowing operation on the robot when receiving a soot blowing instruction sent by the robot, and the application aims at improving the reliability of stable operation of the robot in a high-intensity magnetic field.

The application belongs to the field of display module residual image quantitative test, and relates to a display module residual image quantitative test device, which comprises a lower jig, an upper jig b provided above the lower jig, and an upper jig a fixedly connected to one side of the upper jig b; a shielding assembly provided between the lower jig and the upper jig b, the shielding assembly comprising a through hole b, a partition grid a and an optical test probe; and a switching assembly provided on the top of the lower jig. Through the arrangement of the shielding assembly, the upper jig a or the upper jig b can cover the entire display module main screen area, and only the through hole a or the through hole b position is reserved for brightness measurement, external light interference is effectively shielded, and it is ensured that the measurement data reflects the true brightness value of the display module main body itself. Through the arrangement of the switching assembly, the switching of the upper jig a and the upper jig b can facilitate the test of the black-white junction center position and improve the detection comprehensiveness.

The application provides a virtual picture display method and device, electronic equipment and storage medium, a graphical user interface is provided through a head-mounted device, the graphical user interface displays a virtual picture and a real world picture, the method comprises the following steps: acquiring the posture information and the line of sight of the user in real time through the head-mounted device; determining the motion state of the user according to the posture information; in response to the motion state switching from a first state to a second state and the line of sight leaving the virtual picture, switching the display mode of the virtual picture from a first display mode to a second display mode; wherein the coverage ratio of the virtual picture to the real world picture in the first display mode is different from the coverage ratio of the virtual picture to the real world picture in the second display mode. The application adjusts the display mode of the virtual picture according to the motion state of the user, and shields the interference of the virtual picture in time when the user needs to focus on the real environment.

The application provides a method for testing and evaluating hydrophobicity and hydrophobicity migration of anti-pollution flashover silicone rubber insulation coating, and a testing method, which comprises the following steps: obtaining pollution of silicone rubber insulation coating; pretreating the pollution, loading the pollution into a sample tube to form a sample column; connecting the sample tube with an upper container and a lower air pressure tube after sealing the sample tube; injecting water into the container, and recording the penetration depth of the water into the sample column l or air pressure difference p , and calculating the slope k ; using a reference solvent to obtain the slope k 0; and obtaining the contact angle. By using the method, the hydrophobicity of actual pollution generated during operation of the silicone rubber insulation coating is verified, and good results are obtained. The method can be applied to testing of hydrophobicity and hydrophobicity migration of the insulation coating, thereby providing a universal and accurate testing method.

The utility model discloses a power plant electrical anti-accidental-touch device which comprises a mounting base, mounting holes are formed in the four corners of the mounting base, fixing bolts are in threaded connection with the interiors of the mounting holes, a protective frame is fixedly connected to the surface of the mounting base, and a protective cover is hinged to the outer side of the protective frame through hinges. According to the utility model, through the cooperation of the mounting seat, the mounting hole and the fixing bolt, the device can be mounted on a switch key or a control panel of electrical equipment of a power plant, and then through the cooperation of the protection frame, the protection cover, the hinge piece, the rotating strip, the handle, the fixing block, the clamping groove, the fastening hole, the fastening groove, the fastening spring and the fastening column, the device can be mounted on the switch key or the control panel. The device can effectively prevent personnel from accidentally touching a switch key or a control panel of the electrical equipment, reduces the risk of abnormal start and stop of the equipment, guarantees the stable operation of the electrical equipment of a power plant, and reduces safety accidents caused by misoperation.

The application relates to the technical field of computer-aided diagnosis, and discloses an intelligent evaluation method and system for implant bone integration state, wherein discrete physical measurement data and cone-beam computed tomography images are cross-modally fused, the problems of metal artifact interference and sparse clinical observation data in the prior art are effectively solved, a calibration mechanism based on material mechanics constitutive consistency is established by using a physical stability distribution tensor as a true value benchmark, non-physiological artifact noise caused by high-density metal can be distinguished and removed from the physical nature, misjudgment caused by image visual fraud is avoided, and meanwhile, an anisotropic spatial distance weight matrix is constructed, the model is forced to focus on an effective bone combination interface, and the interference of far-field background noise is shielded.

The utility model relates to a kind of three coaxial output switching device, it includes closed shell, PCB board, phoenix terminal and three coaxial socket;PCB board is fixedly arranged in closed shell;The side of phoenix terminal is fixed on PCB board and is electrically connected with PCB board, the other side of phoenix terminal is plug-in end and passes out to the outside of closed shell, and phoenix terminal is spaced apart with the inner wall of closed shell;The side of three coaxial socket is fixed on PCB board and is electrically connected with PCB board, the other side of phoenix terminal is connecting end and passes out to the outside of closed shell;Phoenix terminal, PCB board and three coaxial socket form switching part, by the closed shell being set, and the connecting part of phoenix terminal, PCB board and three coaxial socket three is located in the inside of closed shell, closed shell can effectively shield the interference of external signal;And the part of phoenix terminal in closed shell is spaced apart with the inner wall of closed shell, can avoid the leakage between the pin of phoenix terminal, and test precision is high.

The utility model discloses an electric vehicle controller which comprises a shell, a base is installed at the bottom of the shell, connecting plates are fixedly installed on the two sides of the base, a control circuit board is arranged in the shell, a shielding layer is arranged in the shell, and the shielding layer wraps the outer side of the control circuit board. A heat conduction plate is fixedly installed in the shell, the heat conduction plate penetrates through the shielding layer to be attached to the control circuit board, cooling fins are fixedly installed on the shell and the base and connected with the heat conduction plate, a wire harness hole is formed in one side of the shell, a wire harness is arranged in the wire harness hole, and the heat conduction plate is connected with the heat conduction plate. And the wire harness passes through the wire harness hole and is connected with the control circuit board. The electric vehicle controller provided by the utility model has the advantages of good heat dissipation effect, strong anti-interference capability, convenience in installation and disassembly and the like, and can effectively solve the problems in the prior art.

The utility model discloses an integrated unmanned vehicle ground reference station, including shell and front cover, the front cover sets up at the front of shell, the front of front cover and the back of shell all is provided with the fin, the front of fin is provided with the cooling fan, the back of shell inner chamber is provided with power module, picture transmits module, flight control module, conversion module, data exchange module and satellite time service module in proper order. The utility model discloses through fin is a kind of passive heat dissipation equipment, usually made of metal material, its working principle is through increasing radiating area to improve heat conduction efficiency, and fin is in close contact with heating element, and the heat generated by element is rapidly conducted to the surface of fin, and the heat is dissipated to air through natural convection, and through cooling fan is a kind of active heat dissipation equipment, and the rotation of fan blade is driven by motor, and forced convection air is used to accelerate the dissipation of heat, to further improve the heat dissipation efficiency.

This invention discloses a small-sized printed circuit board radio frequency identification (RFID) tag antenna with anti-metal interference, comprising three metal layers from top to bottom. The top layer is a radiating layer with a "U"-shaped antenna of zigzag structure on its surface. The middle layer is an impedance matching layer with a non-resonant loop structure on its surface. The bottom layer is a grounding shielding layer. An FR-4 dielectric substrate is placed between the top radiating layer and the impedance matching layer, and similarly, an FR-4 dielectric substrate of the same thickness is placed between the impedance matching layer and the grounding shielding layer. Furthermore, short-circuit walls connecting the three metal layers are provided on both sides of the edges. This invention utilizes mature printed circuit board (PCB) processing technology, enabling efficient and low-cost manufacturing of the tag antenna. The stability and consistency of PCB processing technology ensure product quality while supporting large-scale mass production, suitable for industrial applications. Combined with the multi-layer antenna design of this invention, the precise processing of complex electromagnetic structures is achieved through standardized processes, simplifying the production process and significantly reducing manufacturing costs. Compared with traditional ceramic antenna designs that require precise material preparation, molding and sintering steps, this invention is not only easier to process, but also more cost-effective and easier to promote and apply.

A method and device for managing link state in an MRP ring network, the method comprising: in an open loop state, in response to receiving a first MRP link state packet from any one of two ring ports of an MRM, starting a time window with the time of the receiving as the starting point; within the time window, in response to receiving a first MRP link state packet from the other of the two ring ports, and the link states indicated by the first MRP link state packets received by each of the two ring ports being different, determining the ring port receiving the first MRP link state packet first as a priority port, and determining the ring port receiving the first MRP link state packet later as a sub-priority port; before determining that the forwarding path is in a stable state, processing each MRP link state packet received from the priority port in turn, and not processing each MRP link state packet received from the sub-priority port, effectively suppressing the occurrence of ring network oscillation.

The application discloses a fluorescent composite material, a preparation method thereof and application thereof in detecting formaldehyde, and belongs to the technical field of formaldehyde detection. The fluorescent composite material is of a NaYF4@CDs@SiO2@MIP structure and is in a multilayer core-shell configuration, and its components are sequentially arranged from inside to outside as follows: an up-conversion energy core layer: NaYF4:Yb 3+ / Er 3+ nanoparticles; a fluorescent response intermediate layer: carbon quantum dots loaded on the surface of the core layer; a protection and function interval layer: a mesoporous SiO2 shell layer coated on the outer layer of the CDs; and a specific recognition outer layer: a formaldehyde molecular imprinting polymer shell layer with imprinting cavities complementary to the spatial structure and functional groups of formaldehyde molecules. The material can realize accurate quantitative detection of formaldehyde in the range of 0.003-12.1 mg / L, has a response time of less than 5 min under a 980 nm excitation light source, has excellent fluorescence stability and strong anti-interference capability, and can be directly applied to on-site detection of complex substrates.

This invention relates to a method and system for counting wheat ears based on heatmap guidance and grid mapping, belonging to the fields of computer vision and smart agriculture technology. The method includes acquiring a heatmap reflecting the spatial location response intensity of the ears, dividing it into grids, binarizing the heatmap values ​​within each grid to filter and extract highlighted connected components containing valid ear responses; constructing a spatial mapping relationship from the heatmap grid coordinate system to the original image pixel coordinate system, mapping the position coordinates of the selected highlighted connected components back to the original image; generating a local adaptive window on the original image based on the mapped coordinates, performing secondary contour detection and morphological segmentation within the window, accurately counting the number of individual ears, and summarizing and outputting the final counting results. The advantages are: significantly enhanced resistance to background interference; effectively solving the problem of missed detection caused by dense clustering; improved counting robustness in extremely high-density scenes; and good process interpretability.

The present application relates to a kind of drug production detection devices, to the bottled drug carries out airtightness detection, the device includes base, arc rod, positioning seat, electric telescopic rod and isolator cover, its core is in isolator cover inside and is provided with a set of air curtain generation mechanism, the mechanism is formed by multiple arc-shaped plates, organ plate connected adjacent arc-shaped plate and a top sealing cover, form a adjustable diameter annular cavity, by adjusting motor drive screw and connecting rod mechanism, the position of all arc-shaped plates can be changed simultaneously, to adapt to different size medicine bottle.External gas supply is supplied to the cavity by the air inlet pipe on the sealing cover, when detecting, the back pressure change of air curtain area is monitored by pressure sensor installed in positioning seat, when bottle mouth is sealed well, pressure is stable, when there is leakage, pressure drops, according to this to judge airtightness;The device effectively isolates external interference, realizes non-contact detection, and has the advantage of fast adjustment.

The utility model discloses a detector low-noise cable, which comprises a conductor, and an insulating layer and a sheath layer which are coaxially arranged on the outer side of the conductor in sequence, a shielding layer and an isolating layer are arranged between the insulating layer and the sheath layer, a semi-conductive adhesive layer is coated on the outer side surface of the conductor, and the semi-conductive adhesive layer is coated on the outer side surface of the conductor. The insulating layer is tightly coated on the outer side of the conductor through the semi-conductive adhesive layer, a semi-conductive wrapping layer is tightly arranged on the outer side of the insulating layer, and the semi-conductive tape of the semi-conductive wrapping layer obtained through covering and wrapping further comprises a base material layer and a nano conductive particle coating sprayed on the surface of at least one side of the base material layer. According to the utility model, the interference of an external complex environment on signal transmission can be shielded, bad interference caused by changes of an internal electric field and a magnetic field can be reduced, and the uniformity and stability of weak signal transmission and the reliability under long-term complex working conditions can be improved.

This invention belongs to the field of food analysis, specifically disclosing a fluorescent carbon dot molecularly imprinted polymer for detecting zearalenone, its preparation method, and its application. First, a pseudo-template molecule of zearalenone is pre-assembled with a functional monomer. Then, a red-emitting carbon dot ethanol solution is added as a fluorescent indicator. Finally, a crosslinking agent is added to carry out a polymerization reaction. After polymerization, the pseudo-template is eluted to obtain a fluorescent molecularly imprinted polymer capable of specifically recognizing zearalenone. When detecting zearalenone, quantitative identification can be achieved based on the fluorescence quenching rate of the red-emitting carbon dots. This method features simple operation, high specificity, strong stability, and low cost, enabling rapid detection of zearalenone in grains and providing a new fluorescent molecular recognition material for the development of rapid detection products for food safety.

This invention relates to a UAV target recognition method based on ISAC signal decomposition and background contrast attention fusion, belonging to the field of radar signal processing. The method includes: configuring the transmitted signal of an ISAC base station based on a 5G NR frame structure; receiving and establishing a CSI mixed signal model; constructing a parameterized operator; using the rmD-NSP algorithm to iteratively decompose the mixed signal, separating the rotor micro-Doppler component, and converting the separated signal into a micro-Doppler time-frequency spectrum; using the RMBL module to model multi-scale background features of the time-frequency spectrum; using the BCA module to calculate the difference weights between target features and background features, generating a background-suppressed micro-motion feature vector; generating an HRRP sequence using the CSI mixed signal; using an LSTM network to extract the target's geometric structure feature vector; and weighted concatenating and fusing the micro-motion feature vector and the geometric structure feature vector and inputting them into a classifier to output the UAV target's category probability.

This invention discloses a probe module for crystal oscillator frequency testing, comprising a test circuit board, a non-metallic block, and several probe assemblies. Each probe assembly includes a probe, a probe sleeve, an insulating sleeve, a metal sleeve, and a shielding wire. The non-metallic block has several holes that match the metal sleeves. The probe is inserted into one end of the probe sleeve, and the inner core of one end of the shielding wire is inserted into the other end of the probe sleeve. The probe sleeve is correspondingly positioned within the insulating sleeve, the insulating sleeve within the metal sleeve, and the metal sleeve within the holes of the non-metallic block. The other end of the shielding wire is electrically connected to the test circuit board. This invention uses a metal sleeve, such as stainless steel, on each probe to create a Faraday cage effect, shielding against external electromagnetic interference. This invention can simultaneously test multiple crystal oscillators, improving testing efficiency.