7results about How to "Solve the shielding effect" patented technology

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 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.