12results about How to "Solve the shielding effect" patented technology

The invention discloses a shielding steel plate embedded part and S-shaped sleeve group structure and an installation construction method. The shielding steel plate embedded part and S-shaped sleeve group structure comprises a lower concrete pouring body, a fixed embedded part, a supporting stand column, a transverse supporting assembly, an embedded part supporting steel plate, a shielding steel plate embedded part and an S-shaped sleeve. The fixed embedded part is embedded in a lower concrete pouring body in advance, the supporting stand column is installed on the fixed embedded part, the transverse supporting assembly is installed on the supporting stand column, the embedded part supporting steel plate is installed on the top of the supporting stand column, and the shielding steel plate embedded part is installed on the embedded part supporting steel plate. The shielding steel plate embedded parts comprise the first shielding steel plate embedded part and the second shielding steel plate embedded part, the first shielding steel plate embedded part is located on the front face of the wall to be poured, and the second shielding steel plate embedded part is located on the back face of the wall to be poured. And an S-shaped sleeve is arranged between the first shielding steel plate embedded part and the second shielding steel plate embedded part. The overall stability of the large overweight wall shielding steel plate embedded part and the S-shaped sleeve group structure is improved, and the installation precision requirement is guaranteed.

The utility model provides a pulse generating device which comprises a shell assembly, a control assembly, a pulse emitting assembly and a battery assembly, the battery assembly comprises a battery and a receiving coil, the shell assembly comprises a first shell, a second shell and a third shell, a first space for electromagnetic shielding is formed between the first shell and the second shell, and a second space for electromagnetic shielding is formed between the second shell and the third shell. A first space is formed between the third shell and the first shell, the first space is used for containing the control assembly, the pulse emitting assembly and the battery, a second space is formed between the third shell and the first shell, electromagnetic waves can penetrate through the second space, and the second space is used for containing the receiving coil. The problem that electromagnetic waves are severely attenuated due to shielding of the metal shell during charging is solved, heating is reduced in the charging process, the second space can have the size larger than that of the head of the pulse generating device and can contain a receiving coil with the larger size, and the charging efficiency is improved on the premise that the size of the pulse generating device is not increased.

The utility model provides a mobile phone storage box capable of charging in a wired and wireless mode and shielding signals, and relates to a device capable of charging a mobile phone and shielding signals while storing and controlling the mobile phone. According to the utility model, the problems of safe charging of the mobile phone and signal shielding are effectively solved while the mobile phone is stored, managed and controlled. According to the mobile phone storage box, the vertically-arranged baffles on the mobile phone storage box block two fifths of the width of the horizontally-arranged mobile phone storage cells to limit taking-out of mobile phones, after the cover plate is put down to cover the vertically-arranged baffles to be locked, all the mobile phones are locked and cannot be taken out, and after unlocking, the cover plate is turned upwards, the vertically-arranged baffles are opened, and the mobile phones can be taken out; a charger and a mobile phone signal shielding device are arranged on the lower portion of the mobile phone storage box, the charger is connected with a wireless charging coil and USB charging sockets, the number of the USB charging sockets corresponds to that of the mobile phone storage grids, and when a mobile phone is stored, the mobile phone can be charged wirelessly and charged in a wired mode by inserting a data line. And the mobile phone signal shielding can be started and stopped by turning on and off the mobile phone signal shielding instrument switch. The utility model has simple structure, is safe and convenient, and can be widely used in schools, factories, conference rooms and other places with concentrated mobile phone users.

The utility model discloses a sleeve expanding and tension adjusting tool for a cable wave-proof sleeve. The sleeve expanding and tension adjusting tool comprises an adjusting column with a conical top and a clamping mechanism used for clamping and loosening the adjusting column. The clamping mechanism comprises a connecting block, a connecting ring arranged on the outer edge of the top of the connecting block, three arc-shaped clamping plates which slide in the radial direction of the top of the connecting block and are distributed in the circumferential direction, and push rods which are in threaded connection with the connecting ring and correspond to the three arc-shaped clamping plates one to one, and the ends of the push rods are rotationally matched with the arc-shaped clamping plates. The connecting block is in threaded connection with the central position of the knitting disc of the knitting machine, the arc-shaped clamping plates can clamp and loosen the adjusting column by rotating the push rod, and the device is suitable for knitting of wave-proof sleeves of different specifications; when the adjusting column expands the weaved wave-proof sleeve, each weaved monofilament is uniformly stressed, so that the problem that the shielding effect of the wave-proof sleeve is affected due to the fact that each wire spindle and each monofilament are easily stressed unevenly and monofilament throwing is easily formed when the weaving machine is used for weaving the wave-proof sleeve is solved.

The application discloses a kind of auxiliary drive all-in-one integrated power supply controller assembly, including upper cover plate, big contactor and fuse component, wiring terminal seat component, tray component, first DCDC, first DCAC, shell, water cooling component, second DCDC, second DCAC, lower cover plate, the upper cover plate and lower cover plate are respectively connected in the upper and lower ends of shell, big contactor and fuse component, tray component, first DCDC and first DCAC, water cooling component, second DCDC and second DCAC are sequentially arranged in shell from top to bottom, wiring terminal seat component is arranged in shell respectively with first DCDC, first DCAC, second DCDC, second DCAC electrically connected, big contactor and fuse component are electrically connected with wiring terminal seat component;The water cooling component is used for the cooling of power supply controller assembly;The application is higher, can cover compatible multiple DCDC and DCAC use scene, can satisfy two-way fast charging and the demand of multiple MCU and PDU power distribution.

The invention discloses a high-power microwave ferrite device beneficial to magnetic shielding. The high-power microwave ferrite device comprises an upper aluminum cavity, a lower aluminum cavity, a heat-conducting top cover, a heat-conducting bottom cover, side plates, an upper cooling plate and a lower cooling plate, the upper aluminum cavity is provided with a first opening, the lower aluminum cavity is provided with a second opening, and the first opening and the second opening form an accommodating cavity for accommodating the functional core body. The heat-conducting top cover is arranged at the top of the upper aluminum cavity and covers the first opening, and the heat-conducting bottom cover is arranged at the bottom of the lower aluminum cavity and covers the second opening. The side plates are arranged on the side walls of the upper aluminum cavity and the lower aluminum cavity and cover gaps between the upper aluminum cavity and the lower aluminum cavity. The upper cooling plate is arranged on the heat conduction top cover and provided with a first liquid cooling pipeline, the lower cooling plate is arranged on the heat conduction bottom cover and provided with a second liquid cooling pipeline communicated with the first liquid cooling pipeline, and the first liquid cooling pipeline and the second liquid cooling pipeline are filled with cooling liquid. High magnetic shielding effectiveness is achieved through a totally-closed aluminum cavity structure, efficient heat dissipation under the high-power condition is achieved through liquid cooling heat dissipation, and the technical problem that magnetic shielding and heat dissipation restrict each other is solved.

The invention discloses a PCB liquid crystal phased array antenna, comprising: an antenna cover layer and a spacing layer, wherein the antenna cover layer and the spacing layer are spaced apart, and an air dielectric layer is formed between the antenna cover layer and the spacing layer; a first transmission line layer is arranged on the spacing layer and is located in the air dielectric layer; the air dielectric layer is provided with an active device, and the active device is connected to the first transmission line layer; a phase shifter layer is connected to the spacing layer, and the phase shifter layer is electrically connected to the active device through a first metallized via hole; a third dielectric layer is connected to the phase shifter layer; a second transmission line layer is connected to the third dielectric layer, and the second transmission line layer is electrically connected to the phase shifter layer through a second metallized via hole; the invention solves the problem that a liquid crystal phase shifter as an independent device is difficult to be centrally packaged in the same chip with a power device like a traditional phase shifter, so that the loss of the phase shifter is difficult to be compensated by the power device.

The application relates to a communication chain-free motor control system based on physical layer self-adaption and reflection impedance mapping, which comprises a space magnetic flux self-adaption mechanism; a transmitting end coil of the space magnetic flux self-adaption mechanism is fixed on a primary side fixed base; a receiving end coil is arranged at one end of a secondary side sliding block, and the other end of the secondary side sliding block is connected with a secondary side mounting base through an SMA spiral driver and a balance spring respectively; the secondary side sliding block is slidingly mounted on a linear guide rail support and moves along the axial direction of the linear guide rail support; a metamaterial lens flat plate is coaxially arranged between the transmitting end coil and the receiving end coil; the transmitting end coil is connected with a primary side circuit for energy supply; and the receiving end coil is connected with a secondary side circuit for receiving wireless electric energy and driving a motor. The application cancels a secondary side communication module and a position sensor, converts complex algorithm optimization into self-regulation matching of a physical structure, and significantly improves the dynamic response speed, operation robustness and environmental tolerance of the system under severe working conditions such as strong radiation, deep water and high vacuum.

This invention provides a magnesium-lithium-based composite material and its preparation method, belonging to the technical field of magnesium-based composite materials. The magnesium-lithium-based composite material provided by this invention comprises alternating layers of a first magnesium-lithium alloy layer, a second magnesium-lithium alloy layer, and a third magnesium-lithium alloy layer. The first magnesium-lithium alloy layer comprises, by mass percentage, 2-5.7% Li and the balance Mg; the second magnesium-lithium alloy layer comprises, by mass percentage, 10.3-16% Li and the balance Mg. In this invention, the matrix structure of the first magnesium-lithium alloy layer is an α-Mg single phase, and the matrix structure of the second magnesium-lithium alloy layer is a β-Li single phase, arranged in a sandwich structure of α-Mg / β-Li / α-Mg. This integrates the high-strength α-Mg phase with the high-plasticity β-Li phase, utilizing the impedance mismatch effect of the two different matrix phases to improve the electromagnetic shielding performance of the magnesium-lithium-based composite material.

A zirconium hydride-based moderation shielding material containing gadolinium oxide / samarium oxide / europium oxide, its preparation method, and its application belong to the field of radiation shielding technology. It solves the problems of hydrogen loss, cracking, and poor thermal stability inherent in existing zirconium hydride materials. The material of this invention has a density of 5.58–5.71 g / cm³. 3 The hydrogen content is 1.6wt%~1.83wt%. The mass proportions of each substance in the total amount of ZrH2, Gd2O3, Sm2O3 and Eu2O3 are: 99%≤ZrH2<100%, 0%≤Gd2O3≤1%, 0%≤Sm2O3≤1%, 0%≤Eu2O3≤1%, 0%<Gd2O3+Sm2O3+Eu2O3≤1%. The hydrogen release initiation temperature is ≥557℃. Utilizing multi-element synergistic absorption, the shielding efficiency for 1MeV fast neutrons is ≥97.5%, and the thermal neutron proportion is reduced by ≥80%. It is suitable for small nuclear power reactors below 600℃.

The application provides a stope mine pressure embedded intelligent sensing device, which comprises a pressure sensor, a sensor edge end, an embedded computing unit, a data bus and a communication engine, the pressure sensor is used for monitoring a mine pressure electric signal and is electrically connected with the sensor edge end, the sensor edge end performs analog-digital conversion on the mine pressure electric signal and is electrically connected with the embedded computing unit, the embedded computing unit performs real-time analysis and monitoring and early warning on the mine pressure digital signal after analog-digital conversion and is electrically connected with the communication engine through the data bus, and the communication engine feeds back monitoring data and early warning information to relevant personnel in real time. Through the embedded electronic technology, the device solves the problems of signal shielding and surrounding environment interference in the cable transmission process of monitoring data in the underground, improves the adaptability of the existing stope mine pressure monitoring system to the complex environment of underground mines, realizes real-time synchronization of monitoring data acquisition and prediction and early warning, and maximally improves the real-time performance of early warning.

This invention discloses a modular radiation-hardened power supply based on reconfigurable technology, relating to the field of switching power supply circuit technology. The power supply is composed of physically independent power supply module units, signal module units, primary power module units, secondary power module units, and magnetic component units, which are then deconstructed and interconnected. The power supply module units are responsible for supplying power to the control and drive circuits; the signal module units act as the control center, outputting drive signals and performing synchronous rectification control; the primary and secondary power module units are respectively connected to the primary and secondary sides of the magnetic component units to form a power conversion circuit. This invention, through standardized modular design and differentiated packaging processes, solves the problems of long development cycles, poor flexibility, and difficult heat dissipation under high current in traditional radiation-hardened power supplies, aiming to provide a highly reliable and easily reconfigurable power supply solution.