20results about How to "Reduce radiation" patented technology

A highly efficient 5G mobile phone signal jamming system includes one 5G signal receiving link and multiple jamming transmission links. The receiving link performs polling and time-division multiplexing of downlink signals from various 5G frequency bands and GSCN frequency points. The signal receiving link receives downlink signals from airborne 5G base stations and GSCN frequency points via an antenna. After passing through filters, low-noise amplifiers, mixer downconversion, analog-to-digital conversion, and digital downconversion frequency selection, it performs PSS signal detection and determines whether the jamming transmission link should send signal interference SSB blocks. Compared with existing technologies, this invention detects whether there are PSS synchronization signals on 5G frequency bands and GSCN frequency points, and sends interference signals at the corresponding frequency and time of SSB to disrupt the UE's periodic measurement and reporting of SSB, thereby preventing the mobile phone from camping or accessing the 5G system. It greatly reduces the bandwidth and time of sending interference signals, significantly reducing the power consumption and radiation of the 5G signal jamming system.

The utility model discloses a low emission acoustic magnetic decoder, include: alternating current source, drive circuit and first coil, alternating current source is used to provide alternating voltage, first coil and drive circuit all are connected with alternating current source, and first coil forms series connection with drive circuit, and drive circuit is based on first control signal control first coil and alternating current source form closed loop, and through alternating voltage generates the peak value of alternating current and adjusts alternating current, and first coil is based on alternating current and generates alternating magnetic field to deactivate acoustic magnetic EAS label or mark. The utility model discloses a low emission acoustic magnetic decoder, through forming the series connection of alternating current source, drive circuit and first coil, can use 50Hz to 200Hz's low deactivation frequency's attenuation amplitude alternating magnetic field to deactivate label or mark, in the deactivation process, reduce the exposure of human body to electromagnetic field to the level that conforms to the human body electromagnetic field exposure limit that each regulatory agency makes, increasingly strict, has low emission, low radiation's characteristics.

This utility model provides an automated mineral sample dispensing and retention system, relating to the technical field of mineral sample dispensing and retention processes. It includes a conveying unit for conveying original sample boxes and wide-mouth sample bags respectively; a weighing unit for weighing the dispensed and retained samples; a placement unit for placing the dispensed and retained samples; and a moving unit for picking up the original sample boxes and wide-mouth sample bags from the conveying unit and sequentially moving them to the weighing and placement units. This system boasts a high degree of automation, enabling automated dispensing of mineral samples by number, retention of remaining samples, and traceability of remaining sample quality. It ensures the accuracy of mineral sample dispensing and retention information, and allows for fully automated batch processing, benefiting the occupational health and safety of workers, improving work efficiency and quality. It effectively overcomes the technical shortcomings of existing technologies that require manual operation at each stage, have low automation levels, and suffer from significant human error in sample management.

The embodiment of the invention provides a surface acoustic wave device and an electronic module. The surface acoustic wave device comprises a piezoelectric substrate and an IDT electrode, and the IDT electrode is located on one side of the piezoelectric substrate. The IDT electrode includes: bus bars including a first bus bar and a second bus bar facing each other in a first direction; the first bus bar is provided with a plurality of first electrode fingers and a plurality of first dummy electrode fingers, and the first electrode fingers and the first dummy electrode fingers are alternately arranged and extend from the first bus bar to the second bus bar; the second bus bar is provided with a plurality of second electrode fingers and a plurality of second dummy electrode fingers, and the second electrode fingers and the second dummy electrode fingers are alternately arranged and extend from the second bus bar to the first bus bar; the edge of one end, close to the second bus bar, of at least one first dummy electrode finger is provided with an inward groove; and / or the edge of one end, close to the first bus bar, of at least one second dummy electrode finger is provided with an inward groove.

The utility model relates to the field of fire-resistant windows, in particular to a heat insulation aluminum alloy fire-resistant window which comprises first fire-resistant glass and a window frame. Four groups of window frames for disassembly and assembly are mounted outside the first fireproof glass in a surrounding manner; the first fireproof glass is firstly assembled with the second fireproof glass on one side of the first fireproof glass, the fireproof materials are filled between the two sets of fireproof glass, then one set of window frame is assembled with the first fireproof glass, then the rest of window frames are assembled in sequence, and after the window is used for a period of time, the window can be disassembled through the connecting parts, so that the window is convenient to assemble and disassemble. By means of the detachable window body structure, the heat insulation performance of the window can be maintained, so that heat conducted through the door and window is effectively reduced, the indoor heat preservation performance is improved, the use frequency of an air conditioner and a heater can be reduced, environmental radiation and carbon emission are reduced, and environmental protection is facilitated.

The invention relates to a biomass gasification system and a gasification method. The gasification system comprises a pressurized feeding unit, a fluidized bed gasification unit, a deslagging unit, an entrained-flow bed high-temperature cracking unit, a synthesis gas washing unit, a slag water unit and a gasification agent conveying unit, the fluidized bed gasification unit comprises a fluidized bed gasification furnace and a high-temperature cyclone separator; the fluidized bed gasification furnace is connected with the pressurized feeding unit, the gasifying agent conveying unit, the high-temperature cyclone separator and the deslagging unit; the entrained-flow bed high-temperature cracking unit comprises an entrained-flow bed high-temperature cracking furnace, and the entrained-flow bed high-temperature cracking furnace is connected with a high-temperature cyclone separator, a gasifying agent conveying unit, a synthesis gas washing unit and a slag water unit. Compared with the prior art, the invention couples the advantages of the fluidized bed and the entrained-flow bed, and has the characteristics of wide raw material applicability, high effective gas content, no tar, low energy consumption and the like.

The utility model relates to filter protection circuit and camera of camera head, including image acquisition sensor, connecting port and image processing chip, still including TF common mode filter circuit, electrostatic protection circuit and spread spectrum IC circuit, TF common mode filter circuit is connected with image acquisition sensor, electrostatic protection circuit and TF common mode filter circuit and connecting port are connected, and the CSI the CLK port of image processing chip, the MCLK port of connecting port all are connected with spread spectrum IC circuit, application circuit of this application can reduce the common mode noise of data to the greatest extent, reduce EMI radiation, can reduce electrostatic interference data transmission, can also make the synchronous clock of protocol also have spread spectrum, thereby reducing clock radiation, this application can solve the EMI radiation emission and electrostatic protection problem of MIPI CSI -2 camera head very well, especially applicable to small, data bandwidth is high, clock frequency is high and the camera product of transmission MIPI CSI -2 protocol.

The application relates to the technical field of nursing, in particular to a nursing bed with a light shield for photodynamic postoperation, which comprises a bed body, mounting blocks are symmetrically fixed on the front and rear sidewalls of the bed body, a mounting frame is fixed on the top of the two mounting blocks at the same end of the bed body, a closed space is formed above the bed body through cooperation of a first light shield cloth, a second light shield cloth, a first light shield plate and a second light shield plate, so that a dim space is created, the patient can rest and recover without affecting other patients, a nursing mechanism is arranged, medical staff can nurse the patient under the condition that the first light shield cloth and the second light shield cloth are closed, sunlight is reduced, the patient's recovery is facilitated, the light transmission area for observation of the nursing mechanism can filter ultraviolet rays and infrared rays, and the radiation influence of light on the patient's head is weakened.

The utility model discloses a kind of dual-frequency artificial magnetic conductor, the dual-frequency artificial magnetic conductor includes substrate, ground plane and radiation structure;Radiation structure includes multiple array arrangement sub-radiation unit;Sub-radiation unit includes multiple T-shaped openwork structure, arc T-shaped structure and center structure;Arc T-shaped structure is located in the center structure far from the center of sub-radiation unit side;Center structure includes the arc T-shaped subpart and circular subpart of connection arrangement;Arc T-shaped subpart includes the first edge of the center of sub-radiation unit side far from, arc T-shaped structure includes the second edge of the center of sub-radiation unit side close to;First edge is located in the second edge far from the center of sub-radiation unit side.The dual-frequency artificial magnetic conductor of the utility model has certain different polarization electromagnetic wave vertical incidence insensitivity and incidence electromagnetic wave different incidence angle insensitivity, can reduce the radiation of antenna to human body, improve the security of wearable device.

The application discloses an aero-engine cabin cooling method and belongs to the field of aero-engine cooling. In view of the fact that different kinds of electronic components in the existing engine cabin have different temperature control levels, if a direct ventilation cooling mode is adopted to obtain cabin temperature meeting the temperature control requirement, the cooling air flow needs to be increased or the cooling air temperature needs to be reduced, which not only faces the problem of insufficient ram air heat sink capacity, but also reduces the performance of the aircraft. The application provides the aero-engine cabin cooling method, which can effectively solve the problems of the performance loss of the aircraft caused by the increase of the cooling air flow or the reduction of the cooling air temperature and the insufficient heat sink capacity and the like while ensuring the temperature control of the electronic components.

This application provides a volume control method, device, computer-readable medium, and electronic device based on a ring mouse. The method, executed by the ring mouse, includes: acquiring angular velocity data in each direction collected by a three-axis gyroscope and acceleration data in each direction collected by a three-axis accelerometer. The three-axis gyroscope and accelerometer are located inside the ring mouse. The angular velocity and acceleration data are acquired when the wearer of the ring mouse makes a hand gesture, such as drawing a circle in a first direction or a second direction; constructing sensing waveform data based on the angular velocity and acceleration data in each direction; and controlling the system volume of the controlled device based on the sensing waveform data, with the circling motion in the first direction and the circling motion in the second direction corresponding to different system volume control commands. This application embodiment achieves air-to-air volume control, freeing the user's hands and reducing radiation.

The utility model provides a radio frequency front-end module. The radio frequency front-end module comprises a substrate, a first chip, a second chip, a third chip, a coupler, a Bluetooth signal transmitting end, a radio frequency signal transmitting end, an antenna end, a radio frequency signal receiving end and a coupling power output end, the first chip, the second chip, the third chip and the coupler are all fixed on the substrate; the first chip is integrated with a power amplification circuit and a resistor, the second chip is integrated with a logic control circuit and a first voltage conversion circuit, and the third chip is integrated with a first switching circuit and a second switching circuit. According to the utility model, the mode of controlling the transmitting power of the radio frequency front-end module can be simplified, the radiation is reduced, the energy consumption is reduced, and the service life of the radio frequency front-end module is prolonged.

This application relates to an antenna deployment method, apparatus, computer equipment, and storage medium. The method includes: acquiring operating parameter data of each component in a radio frequency identification (RFID) system; wherein the components include antenna clusters and electronic tags; the antenna clusters include at least two antennas forming a through-beam architecture; determining the target distribution layout of each antenna based on the operating parameter data; wherein the target distribution layout includes the target antenna angle and target antenna spacing between antennas in each antenna cluster; establishing a spatial energy distribution model based on the target distribution layout; and determining the target electric field intensity after the interference superposition of the radiation fields between each antenna in the antenna cluster based on the spatial energy distribution model. Thus, by optimizing the layout of multiple antenna clusters, the directivity of the main beam can be effectively controlled, sidelobe radiation reduced, and the misread rate to adjacent areas lowered; by employing a through-beam architecture or multi-antenna collaborative operation, electronic tags can be covered from different angles.

The utility model provides a kind of radio frequency front end module and time division duplex system, wherein, the radio frequency front end module includes substrate and respectively set on logic control circuit, signal input end, power amplifier circuit, power detection circuit, direct current output end, coupler, coupled power end, first switching circuit, antenna end, second switching circuit, low noise amplifier, single-pole single-throw switch, signal output end and third switching circuit of the substrate.The radio frequency front end module of the utility model can simplify its control transmission power mode, and reduce radiation, reduce energy consumption, to improve the service life of radio frequency front end module.

This invention provides a non-resonant inductance compensation circuit and a non-resonant coil extension line for a wireless charging system. The non-resonant coil extension line consists of two Litz wires wound into a flat, closely spaced conductor as the internal wire, covered with a grounded copper mesh and an insulating layer to effectively increase current and reduce radiation. The non-resonant inductance compensation circuit includes the non-resonant coil extension line, with its two ends connected to the transmitting non-resonant coil and the transmitting control circuit, respectively. This inductance compensation circuit compensates for the inductance of the transmitting non-resonant coil to meet the requirements of magnetic wireless charging, effectively solving the charging instability problem caused by changes in inductance when the extension of the transmitting non-resonant coil changes.

The utility model discloses wireless charging ceramic heating body high -speed hair drier, specifically including cylinder, fan, ceramic body and battery, be provided with air inlet and air outlet on the cylinder, and fan, ceramic body and battery all set up in the cylinder, and fan drives through drive assembly, and air is blown into the cylinder from the air inlet, and drive assembly is electrically connected with battery, ceramic body is conductive ceramic, and ceramic body is electrically connected with battery, and ceramic body is provided with through -hole, and ceramic body is used for heating the air in the cylinder, and the air in the cylinder blows out from the air outlet. Through setting up ceramic body as heating ceramic, make ceramic body itself possess heating function, compare with heating wire, and heating efficiency is higher, and the electric quantity of consumption is less under the same heating effect, and the endurance of wireless hair drier is improved, simultaneously, compared with heating wire, reduce the radiation produced in the use process, and ceramic material itself is high temperature -resistant, need not rely on mica sheet etc. material, reduce the release of harmful microparticle, improve user use security.

The utility model belongs to the technical field of baking tray, concretely relates to a baking tray, including the baking tray main part, the lower fixedly connected with support block of baking tray main part, the lower end of baking tray main part is provided with antiskid mechanism, the outside fixedly connected with connecting sleeve of baking tray main part, the inside rotation is connected with screw rod of connecting sleeve, the fixedly connected with rotating block on screw rod, rotating block is connected with connecting sleeve rotation, the inside of connecting sleeve is connected with bolt through screw thread. The utility model is through design connecting block, connecting rod, draw -in groove, slide, pull block and tension spring etc. component, pull slide and move, slide moves and removes from draw -in groove, then moves antiskid board, connecting rod and draw -in groove etc. component downwards, and antiskid board moves downwards and contacts to specified position, then moves slide to another draw -in groove, and further makes antiskid board etc. component get the location, prevents the device from shifting in specified position.

This invention relates to the field of branch target buffer fault-tolerant design, and proposes a fault-tolerant design system and method based on a fully connected L0 BTB, comprising: XORing the current instruction address to obtain the XOR checksum of the current instruction address; concatenating the current instruction address and the XOR checksum and writing them simultaneously into two L0 BTBs; accessing both L0 BTBs simultaneously with the current instruction address, and comparing the current instruction address with the target instruction address to determine whether an L0 BTB is hit; if one of the L0 BTBs is hit, setting the enable signal value to 1, obtaining the content of the entry and performing an XOR check on the entry; if the XOR checksum of the entry is the same as the checksum stored in the entry, then the entry is taken as a candidate entry; making a decision based on the obtained candidate entries; if the check result shows that no candidate entry appears, then it is considered that the current instruction address has not hit an L0 BTB.

This utility model relates to the technical field of gearbox alloy bracket structures and discloses a gearbox alloy bracket structure with anti-vibration buffer connection. The structure includes an alloy bracket with a honeycomb-shaped buffer layer at its top. The honeycomb cells of the buffer layer are filled with high-damping rubber. First and second mounting holes are respectively provided at both ends of the alloy bracket, and a third mounting hole is provided in the middle. All three mounting holes pass through the honeycomb-shaped buffer layer. A stacked damping plate is provided at the bottom of the alloy bracket. This utility model, by using the honeycomb-shaped buffer layer and high-damping rubber, utilizes the inherent flexibility and damping of the honeycomb structure. The high-damping rubber further absorbs vibration energy and converts it into heat energy, significantly improving the damping characteristics of the bracket itself and reducing the outward radiation and transmission of vibration.