67results about How to "High energy concentration" patented technology

Single-core and multi-core microcapsules are provided, having multiple shells, at least one of which is formed of a complex a coacervate of two components of shell materials. The complex coacervate may be the same or different for each shell. Also provided are methods for making the microcapsules.

The invention discloses a laser link communication-measurement composite system. Through adoption of the laser link communication-measurement composite system, the payload weight, size and power consumption can be lowered. The laser link communication-measurement composite system is implemented by the following technical scheme: an optical antenna transmits a comprehensive optical signal to a rapid reflecting mirror through an eye lens at a transmitting end; reflected light splits a light beam of the comprehensive optical signal into two paths through a beam splitter; one path is transmitted into another beam splitter through the beam splitter to transmit the light beam into a coarse tracking module in order to extract a target position coarse miss distance, and a control voltage is applied to a two-dimensional turntable according to an embedded control algorithm; the other path of comprehensive optical signal is introduced into the field range of a fine tracking module through the beam splitter, and transmitted into the fine tracking module to extract a target position fine miss distance, the overall offset of fine field light spots is controlled, the light spots are introduced into the center of a fine tracking field to obtain target angle information, and the extracted target position fine miss distance is transmitted into a ground / satellite platform comprehensive electronic management and processing module to finish target capture and an aiming function and establish a communication link.

High-strength microwave antenna assemblies and methods of use are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. Proximal and distal radiating portions of the antenna assembly are separated by a junction member. A reinforcing member is disposed within the junction member to increase structural rigidity.

The invention relates to a device of self-adapting correcting laser aberration based on genetic algorithm. It is made up of primary oscillation laser, optical isolator, power amplifier, P direction Polaroid, 1 / 4 wave plate, parallel light pipe, distortion mirror, variable density attenuation disc, spectroscope, photo detector, high pressure amplifier, data acquisition card, focusing lens, eyelet diaphragm, main control computer and control software based on genetic algorithm. The invention could be used to self-adapting correct the dynamic and static aberration of laser system. It could effectively improve the output light beam quality that needs not lower laser output power, and improve the far field facular energy concentration ratio, and expand the application field of solid laser of the MOPA.

A method is provided for the production of pellets or briquettes from lignin containing material in the form of processable particles wherein the method includes the steps of: passing the material having a relative moisture content of more than about 20%, by weight, to a drying step and drying it to a relative moisture content of about 0-30% by weight; passing the material to a heat treatment step and heating the material to about 180-235° C. by injecting steam into a reactor; maintaining the material in the reactor at the temperature reached for a sufficient time to soften the material and release lignin; reducing the pressure in the reactor in at least one step; and pelletizing or briquetting the treated material. The invention also concerns pellets or briquettes produced by the method.

A distance-of-flight mass spectrometer (DOF-MS) imparts constant momentum acceleration to ions in an ion source and uses an ion mirror to enhance energy focusing. Embodiments of DOF-MS with ion mirror are shown. Further, a method of compensating for the dispersion of initial ion position and velocity in the ion source is discussed.

A method of blasting rock, in mining for recoverable material, comprising drilling blastholes in a blast zone loading the blastholes with explosives and then firing the explosives in the blastholes in a single cycle of drilling, loading and blasting. The blast zone comprises a high energy blast zone in which blastholes are partially loaded with a first explosive to provide a high energy layer of the high energy blast zone having a powder factor of at least 1.75 kg of explosive per cubic metre of unblasted rock in the high energy layer and in which at least some of those blastholes are also loaded with a second explosive to provide a low energy layer of the high energy blast zone between the high energy layer and the adjacent end of those blastholes, said low energy layer having a powder factor that is at least a factor of two lower than the powder factor of said high energy layer. The high energy blasting method provides improved rock fragmentation through increased explosive energy concentration while simultaneously alleviating deleterious environment blast effects.

The invention relates to an image-tampering detection and recovery method based on an energy-domain semi-fragile watermarking. The method comprises the following steps: on the basis of image partitioning, a brightness difference value is extracted as an initial watermarking, on the basis of carrying convolutional encoding and scrambling on the initial watermarking, watermarking information is embedded into an image block after Walsh-Hadamard transform, and at last, Walsh-Hadamard reverse transform is carried out on the image to finish the embedment of the image watermarking to obtain a picture containing the watermarking; the image watermarking is extracted at a watermarking extraction and detection end through partitioning the image embedded with the watermarking and carrying out the Walsh-Hadamard transform, bit reverse scrambling, the convolutional encoding and other operations, and the preliminary detection and accurate detection of tampering are preformed through comparing the image brightness and other information with the watermarking information to locate a tampered region; and the tampered region is recovered by Viterbi decoders. The invention can resist attack of JPEG, JPEG2000 and other lossy compression and high-proportion lossy compression, and the blind detection of the watermarking and the recovery of the tampered image are achieved without additional information in the detection process.

The invention discloses 3D printing equipment. The 3D printing equipment comprises a storage device, a peristaltic pump, an extrusion head, an ultraviolet light curing device, a printing tray, an X-axis motion mechanism, a Y-axis motion mechanism, a Z-axis motion mechanism and a controller. A liquid photosensitive material is contained in the storage device. One end of the peristaltic pump is connected with the storage device through a pipeline, the other end of the peristaltic pump is connected with the extrusion head through a pipeline, the ultraviolet light curing device is connected with the extrusion head, the printing tray is located below the extrusion head, and the controller controls the peristaltic pump, the ultraviolet light curing device, the X-axis motion mechanism, the Y-axis motion mechanism and the Z-axis motion mechanism. Through the cooperation of the peristaltic pump and the extrusion head, liquid printing materials are conveyed and printed, and printing accuracy is high. The ultraviolet light curing device and the extrusion head are fixed together and kept synchronous in the operating process, and rapid curing is achieved while printing is conducted.

The invention discloses an optical probability shaping method based on diamond modulation and symbol level partial marking mode. Under the condition of satisfying minimum Euclidean distance, the spatial advantage of the constellation map is achieved, and the diamond QAM constellation map is proposed. At the same time, by combining with the proposed symbol-level probability shaping method, the distribution probability of low energy points of the input signal is improved and the transmission performance of the system is improved by increasing redundancy. The combination of symbol level probability shaping and diamond constellation mapping makes up for the shortcomings of single shaping or mapping, and has a significant contribution to the reduction of BER. Although the use of probability shaping increases the redundancy of information, but compared with the reduction of bit error rate, it has certain advantages and application prospects.

The proposed multifunctional hydrodynamic vortex type reactor includes—a housing having curvilinear inner sidewalls,—a base attached to the housing, an inverse taper narrowing downward and attached to the top of housing,—a supporting tube passing at least through the housing and base,—a set of washers tapered downward and mounted on an outer surface of the supporting tube such that outer upper edges of the set of washers and the inner sidewalls form predetermined gaps therebetween, and—a number of inlets tangentially attached to the base for introducing, under external pressure, a solid substance and a liquid (or a suspension of their mixture) thereinto, forming a circulating flow therein. The flow forms a high speed bypassing cavitation zone and, changing its direction at the inverse taper, forms a vortex cavitation zone, providing for mixing and grinding the substance up to nanoscale sizes. Methods for intensifying cavitation are also provided.

The invention discloses a multi-beam combiner. The multi-beam combiner comprises an incident beam array and at least two-level synthesis devices; the incident beam array comprises several parallel incident beams; the incident beams are arrayed layer by layer from the centre to the edge on a plane vertical to the incident beams; each layer of beams can be arranged in a closed shape on the verticalplane; the at least two-level synthesis devices polymerize beam collimators around the centre beam layer by layer; each synthesis device comprises outer reflecting mirror surfaces and inner reflectingmirror surfaces; the number of the outer reflecting mirror surfaces is the same as the number of collimator layers; the outer reflecting mirror surfaces are fixed on a support plate, and arranged around the centre hole of the support plate; furthermore, the centre hole is superposed with the centre of a centre beam collimator; the number of the inner reflecting mirror surfaces is the same as thenumber of outer reflecting surfaces; the inner reflecting mirror surfaces are fixed on the support plate; and the centre hole around the support plate is arranged in the radial direction, and positioned among the outer reflecting mirror surfaces and the centre hole. The problems of the limited number, complex structures and the like of beams participating in synthesis in the prior art are solved;large number of beam synthesis can be realized; furthermore, the multi-beam combiner is compact in structure and easy to implement; and the synthetic light power is increased.

The invention belongs to the technical field of satellite navigation system signals, and particularly relates to a binary offset carrier modulation method based on time domain raised cosine pulses. The method includes the following steps that the frequency or cycle of a spreading code and the sub carrier frequency or cycle and sine or cosine subcarrier modulation mode are determined; spectrum spreading is conducted on a navigation signal through a pseudorandom sequence, time domain multiplying is conducted on an obtained spectrum spreading signal and the determined sine or cosine subcarrier signal, and a sine or cosine base band modulating signal is obtained; carrier modulating of an quadrature branch is conducted on the obtained sine or cosine base band module signal, and a binary sine or cosine offset carrier modulating signal based on the time domain raised cosine pulses is obtained. By means of the binary offset carrier modulation method, the power spectrum sidelobe decay rate of the modulation signal is higher, the amplitude is lower, and the energy concentration degree is higher.

The invention relates to an off-axis reflective optics system with an ellipsoidal mirror as a main mirror and belongs to the field of intensive laser close range damage. The off-axis reflective optics system with the ellipsoidal mirror as the main mirror is composed of an ellipsoidal reflective mirror (1) and a parabolic reflective mirror (2), super laser emitted by a laser first enters the parabolic reflective mirror (2) in an incident mode, then reflects to the ellipsoidal reflective mirror (1) through the parabolic reflective mirror (2), the super laser is gathered to a focus through the ellipsoidal reflective mirror (1) to damage and hit a target. A long-axis focus F2 of the ellipsoidal reflective mirror (1) coincides with a focus F1 of the parabolic reflective mirror (2), and a long axis of the ellipsoidal reflective mirror (1) coincides with the long axis of the parabolic reflective mirror (2). The off-axis reflective optics system with the ellipsoidal mirror as the main mirror optimizes an optics system based on a traditional off-axis reflective optics system with a parabolic mirror as a main mirror, improves close range converging capacity of emergent laser and system fighting efficiency on the premise of no change of an original system volume, weight and processing cost.

The present invention belongs to the field of satellite navigation system signal, and especially relates to a binary coded symbol modulation method based on a time domain raised cosine pulse. The binary coded symbol modulation method comprises the steps of: first determining the frequency and period of a spreading code and the length of a coded symbol sequence, and selecting the optimal coded symbol sequence through a signal auto-correlation characteristic; performing spread spectrum for a navigation signal by using a pseudo random sequence according to the determined frequency or period of the spreading code and the optimal coded symbol sequence, so as to obtain a spread spectrum signal; performing carrier modulation of an orthogonal branch for an obtained binary coded symbol base-band modulation signal based on a time domain raised cosine pulse, so as to obtain a binary coded symbol modulation signal based on the time domain raised cosine pulse; and re-determining the frequency or period of the spreading code and the length of the coded symbol sequence, and selecting the optimal coded symbol sequence. Compared with a traditional BCS modulation, the modulation signal obtained by the binary coded symbol modulation method of the present invention is faster in power spectrum sidelobe attenuation speed and lower in amplitude, and is higher in energy concentration degree.

The invention belongs to the technical field of optics, and relates to a fingerprint and vein double biological feature extraction optical imaging system which is capable of operating at a visible light waveband and a near-infrared waveband at the same time and adopts an active optical imaging mode, wherein a white light LED (Light-Emitting Diode) light source and a near-infrared LED light sourceare adopted to respectively perform surface-type lighting and lateral-transmission-type lighting on a to-be-detected object, then a fingerprint image and a vein image are acquired by the optical imaging system at the same time, and the fingerprint image and the vein image are received by a follow-up sensor after an infrared filter. The fingerprint and vein double biological feature extraction optical imaging system is based on a double gaussian structure, and adopts a coaxial transmission type structure, so that small-volume optical imaging is achieved through few optical lenses, in comparisonwith a conventional system, the volume is greatly reduced, thus the optical imaging system has the characteristic of simple and compact structure; in addition, focusing performances of the optical imaging system at various field positions of double wavebands are all close to a diffraction limit, thus the optical imaging system has the advantages of small distortion, high energy concentration rate, uniform image surface illumination distribution and so on; and extraction of double biological features consisting of fingerprint and vein can be completed at the same time, thus the optical imagingsystem also has the advantage of high security.

The invention discloses an optical probability forming method based on dense constellation reduced-order index. The method comprises the steps of performing serial-parallel conversion on a single-pathbinary bit, and outputting five paths of parallel binary stream signals; enabling a reduced-order index probability distribution matcher to identify the data, add reduced-order index symbols to the data, add subset information identification bits to reduced-order indexes for rearrangement, and then output mapping points and index information in a mixed arrangement mode; in the QAM constellation mapping, in combination with a honeycomb-like constellation diagram construction mode, realizing reduced-order index probability forming and honeycomb-like constellation diagram coding modulation ; ata receiving end, subjecting signals to power adjustment through an amplifier, converting optical signals into electric signals through a demodulator; and demodulating irregular polygonal QAM signals through a QAM modulator, and subjecting centralized signals to inverse matching through a dedistribution matcher to obtain original input signals. According to the method, the peak-to-average power ratio and the average power of the signal are better reduced, and the noise influence of a transmission system is reduced under the condition of the same Euclidean distance.

The invention discloses a laser generation and emission device of wireless energy transmission of a space solar power station, and aims to solve the space solar energy transmission problem. The laser generation and emission device is composed of a power supply module, an main oscillator module, a beam splitting module, a phase position control module, a beam isolation module, an optical fiber laser gain module, a semiconductor pumping module, a phase position detection and control circuit module, a collimator array module, a beam sampling module and a beam detection module. The main oscillator module, the beam splitting module, the phase position control module, the beam isolation module and the optical fiber laser gain module are sequentially connected; the power supply module transforms an inputted primary power supply and provides the power supply to each sub module; and the collimator array module, the beam sampling module and the beam detection module are sequentially connected. The laser generation and emission device of the invention is suitable for the laser wireless energy transmission of the space solar power station, and is especially easy to realize the long-distance transmission and reception of the laser.

The invention relates to an optical lens applying ultraviolet laser, which comprises a first lens, a second lens and a third lens sequentially lined in the incidence direction of a light beam; the first lens is a double-concave lens; the second lens is a meniscus-shaped lens, and the curved surface thereof bends towards the incidence direction of the light; the third lens is a double-convex lens; and wherein the optical lens is used for the ultraviolet laser with the focal length of 160mm and the wavelength of 355nm, and a processing area with the processing scope of 100*100*90mm<3> and the processing depth of 157 to 67mm. The optical lens can carry out plane or three-dimensional imaging marking on the surface of or inside a medium, so that carved points are finer, clearer, more uniform and do not deform, thereby not only improving the quality of internally carved products but also improving the working efficiency.

The invention discloses an improving method based on the Huffman lossless compression algorithm. By the method, the redundancy of original data is reduced, the data energy concentration ratio is improved, and the compression ratio is improved. The method comprises the following steps of (1) performing block-based DPCM (Differential Pulse Code Modulation) algorithm; (2) performing integer wavelet transformation; (3) classifying, sequencing and finishing data; (4) adopting Huffman compression coding; (5) adopting the Huffman decompression algorithm; (6) restoring each level of wavelet coefficient sub-band; (7) performing integer wavelet inverse transformation; and (8) performing decompression algorithm of DPCM.

The invention discloses a laser communication system distortion wavefront prediction method based on an LSTM network, and the prediction process comprises the steps: simulating and generating a dynamic phase screen which accords with the statistical distribution of atmospheric turbulence in a laser communication system in MATLAB through a phase covariance function, and simulating distortion wavefront; dividing the dynamic phase screen into two groups as a training set and a test set of the LSTM network prediction model, inputting historical continuous distorted wavefront in the training process, outputting the next frame of wavefront to be corrected, generating a plurality of groups of prediction models after iteration, performing effect verification by using the test set, taking a residual average RMS value of a truth value and a prediction value as an evaluation index of the prediction model, selecting a model with the minimum residual average RMS value as a final prediction model, and deploying the model to an actual laser communication system to realize forward prediction of the distorted wavefront. According to the invention, the nonlinear fitting capability of the neural network is exerted, the long and short term memory capability of the LSTM network is fully utilized to carry out distortion wavefront prediction, and the energy concentration and communication capability of transmission laser are improved.

A method of blasting rock, in mining for recoverable material, comprising drilling blastholes in a blast zone loading the blastholes with explosives and then firing the explosives in the blastholes in a single cycle of drilling, loading and blasting. The blast zone comprises a high energy blast zone in which blastholes are partially loaded with a first explosive to provide a high energy layer of the high energy blast zone having a powder factor of at least 1.75 kg of explosive per cubic meter of unblasted rock in the high energy layer and in which at least some of those blastholes are also loaded with a second explosive to provide a low energy layer of the high energy blast zone between the high energy layer and the adjacent end of those blastholes, said low energy layer having a powder factor that is at least a factor of two lower than the powder factor of said high energy layer. The high energy blasting method provides improved rock fragmentation through increased explosive energy concentration while simultaneously alleviating deleterious environment blast effects.

The invention relates to a high-frequency welding induction gun head and a welding gun with the gun head applied. The welding gun comprises a gun body, a drive mechanism and the gun head; the gun head comprises a connection cover and a casing pipe; the gun body comprises a gun head base, a welding assembly and a control assembly; the welding assembly is installed on the front end portion of the gun head base and comprises a magnetic conductive bar and an electromagnetic induction coil surrounding the magnetic conductive bar; the control assembly is arranged on the rear side of the welding assembly and comprises a control unit and a pressure sensor arranged on the rear side of the control unit; the front end of the control unit is in abutting connection with the magnetic conductive bar; and the rear end of the control unit is in non-contact connection with the pressure sensor. Shaping and fusion welding on a post terminal are completed synchronously in the welding process of a storage battery connecting terminal through cooperation of a high-frequency electromagnetic induction heating mode and lifting movement of the gun head, the traditional welding procedure is simplified, and full-automatic and mechanical welding production of the storage battery connecting terminal is easily achieved by being matched with a mechanical arm.

The invention discloses an anastigmatic spectrometer, which comprises an entrance slit, a collimating element, a dispersing element, a focusing element, a detecting device and an anastigmatic element, wherein the collimating element is arranged behind the entrance slit, and is used for converting light rays emitted from the entrance slit into parallel light; the dispersing element receives the parallel light emitted by the collimating element, and is used for dispersing the parallel light into a plurality of light beams spatially according to wavelengths; the focusing element receives the plurality of light beams emitted by the dispersing element, and is used for focusing the light beams after dispersing; the detecting device is placed on a focal plane of the light rays emitted by the focusing element, and is used for measuring intensity of a focusing spot at each wavelength; and the anastigmatic element is arranged in front of the detecting device, and is used for correcting astigmatism of the wavelengths to obtain an energy-concentrated focusing spot on the focal plane. Therefore, by implementing the anastigmatic spectrometer, astigmatism can be corrected, and collection efficiency and flexibility can be improved.

A full sphere annular large visual field moon edge optical imaging object lens belongs to the technical field of optical design and solves the defects of high manufacture and detection cost of parts and the whole machine of an optical system in the prior art, and the uncertain work stability in the space environment. A first planar mirror combination, a second planar mirror combination, an imaging lens combination, a diaphragm, a piece of detector protection glass, and a detector are coaxially arranged according to a light incident sequence. The second planar mirror combination is arranged in front of the first planar mirror combination and arranged in parallel. The first planar mirror combination includes eight planar mirrors which are circumferentially uniformly distributed around a Z axis. The second planar mirror combination includes eight planar mirrors which are circumferentially uniformly distributed around the Z axis. The planar mirrors in the two planar mirror combinations are corresponding to each other. The optical system is insensitive to a circumlunar satellite orbital altitude. The full sphere annular large visual field moon edge optical imaging object lens has high resolution imaging, high imaging quality, and high pointing accuracy, can suit the high precision attitude location of an airship in a moon reflection spectrum region, and reduces the circumlunar flight satellite attitude location time.

The invention provides a non-stationary signal frequency detection method and a storage medium, and the detection method comprises the steps: selecting a window function of short-time Fourier transform according to the kurtosis of a non-stationary signal, and introducing a mode of multi-synchronous compression transform and data fusion to improve the energy concentration and frequency resolution of a time-frequency transform result. Accurate frequency detection of non-stationary signals can be achieved through a ridge line extraction algorithm.

The invention discloses a high-resolution ratio moon edge optical imaging objective lens belonging to the optical system technology field. In order to solve the problems of the prior art, the objective lens is provided with an isosceles Dove reflecting prism group, a plane reflecting mirror, an imaging lens group, a diaphragm, a piece of detector protection glass, and a detector, which are coaxially arranged according to the light incoming sequence. The plane reflecting mirror is disposed on the front end of the isosceles Dove reflecting prism group. The isosceles Dove reflecting prism group comprises eight isosceles Dove reflecting prisms, which are uniformly arranged around a Z axis in a peripheral direction. The incoming light can transmit through the lower surface of each isosceles Dove reflecting prism of the isosceles Dove reflecting prism group. For each of the isosceles Dove reflecting prisms, the incoming light can be reflected by one isosceles surface, and can transmit through the other isosceles surface, and then can be reflected by the plane reflecting mirror, and then the reflected light can transmit through the imaging lens group and the detector protection glass sequentially, and then can be received by the detector. The high-resolution ratio moon edge optical imaging objective lens can be used to satisfy the high precision attitude determination requirement of the circumlunar satellite.

The invention relates to the field of laser coherent synthesis, in particular to a pore diameter filling device and method for realizing synthesis of multiple paths of light beams by using a stacked spectral interference light path. Specific to the problems existing in the prior art, the invention provides a pore diameter filling device and method for coherent synthesis of multiple paths of laser light beams. By controlling a phase voltage error through a plurality of coherent light beams by using a reflecting mirror, a spectroscope, a feedback circuit and the like, multiple paths of coherent light beams are synthesized into a single far field main lobe main beam. The pore diameter filling device comprises a first synthesis interference light path, a second synthesis interference light path, a synthesizer, a first spectroscope and a feedback circuit, wherein the first synthesis interference light path and the second synthesis interference light path are used for performing power synthesis on two paths of input light signals; the synthesizer is used for performing power synthesis on output signals of the first synthesis interference light path and the second synthesis interference light path; the first spectroscope is used for reflecting and transmitting a light signal output by the synthesizer; and the feedback circuit is used for performing feedback light signal adjustment on a light signal reflected by the spectroscope. The pore diameter filling device and the pore diameter filling method are mainly applied in the field of laser coherent synthesis.

The embodiment of the invention provides a beam forming method, network equipment, a terminal and a storage medium. The beam forming method comprises the following steps: obtaining a first beam forming weight in a first polarized antenna direction according to direction of arrival information; obtaining a phase difference between two polarized antenna directions according to the precoding matrix indication information; obtaining a second beam forming weight in the second polarized antenna direction according to the first beam forming weight and the phase difference; and generating a shaped beam according to the first beam forming weight and the second beam forming weight. According to the embodiment of the invention, beam forming in the first polarization direction is carried out through the direction of arrival algorithm, so that the shaped beam of the network equipment is narrower, the energy concentration degree is higher, and the signal-to-noise ratio is effectively improved; the precoding matrix indication information is utilized to construct beam forming in the second polarization direction, so that one polarized antenna sends two layers of data, the antenna gain of each layer of data is increased, and the anti-interference capability and the transmission traffic of a transmission channel are effectively improved.

The invention relates to a device and a method for desulfurization and denitration of flue gas from a boiler. The device comprises an electrostatic dust remover, a direct cooler, a reactor, a light wave generator and a collector. The method comprises the following steps: allowing the flue gas from the boiler to enter the electrostatic dust remover, carrying out dust-removing treatment, then allowing dust-removed flue gas to enter the direct cooler, carrying out cooling to a set temperature in the direct cooler, then allowing obtained flue gas to enter the reactor, carrying out a reaction on the surface of an adsorption sensitizer reaction layer arranged in the reactor under irradiation of light waves generated by the light wave generator so as to generate a reaction product, and collectingthe reaction product into the collector. According to the invention, the electrostatic dust remover can remove a majority of solid particles in the flue gas from the boiler; the direct cooler can increase the reaction rates of SO2 and NOx in the flue gas in the reactor; the light wave generator has high degree of energy concentration; thus, after the flue gas passes through the reactor, few temperatures of the flue gas is increased, and the utilization rate of energy is improved; a final reaction product can also be used as an industrial raw material; in general, the device provided by the invention has low operation cost and can operate in a dry or semi-dry manner, so corrosivity is reduced, and the maintenance cost of the device is decreased.