121results about How to "Energy concentration" patented technology

The invention discloses an infrared light source assembly. The infrared light source assembly comprises an infrared light source, a lens and a driving assembly, wherein the infrared light source is used for emitting infrared light, the lens covers the infrared light source and is used for leading the infrared light transmitted onto the lens outside the infrared light source assembly, and the driving assembly is used for driving the infrared light source and/or the lens to move to make the lens lead the infrared light to the target direction. For the infrared light source assembly, the infrared light source or/and the lens is driven through the driving assembly to move to make the infrared light emitted by the infrared light source to change through the emission direction after projection of the lens, the purpose that the infrared light is led by the lens to the target direction is realized, so the strong-enough infrared light can be projected to an eye portion of a to-be-identified object even when emission power of the infrared light source is relatively small, energy of infrared light beams of the infrared light source is made to be more concentrated, illumination intensity is relatively large, and the light supplement effect is relatively good. The invention discloses an electronic device.

The invention discloses a multicast system radio resource optimal distribution method based on an active antenna array model. The method comprises the steps as follows: performing cluster processing to a user based on position information of the user and video request information estimated in current time period; calculating a horizontal azimuth angle and a vertical elevation angle of the central position of each user group according to the user cluster result and position information of each user group; accurately aligning the user group with a base station antenna beam; using an antenna model of an active antenna array and determining a channel gain model from the base station to the user; providing a carrier resource distribution model based on the target of maximizing throughput capacity; providing a user group clustering algorithm, and performing clustering processing to the user group according to the position information of the user group. On the basis of carrier distribution algorithm of maximizing the throughput capacity, the method of the invention improves spectrum effectiveness, resource utilization rate, system capacity and user performance.

The invention discloses an image fusion method based on an imaging mechanism and non-sampled Contourlet transform. The method comprises the following steps of: first, carrying out the multi-scale and multi-direction decomposition to a source image and obtaining sub-band coefficients of different frequency domains via the non-sampled Contourlet transform; next, building a fusion rule based on the direction vector norm to the low frequency sub-band coefficients and building a fusion rule based on the union of the local directional contrast and the direction vector standard deviation to the band-pass direction sub-band coefficients; then, respectively combining the low frequency sub-band coefficients of the source image and each band-pass direction sub-band coefficients according to the built fusion rules and obtaining the non-sampled Contourlet transform coefficients of the fusion images; finally, rebuilding the fusion images via the non-sampled Contourlet inverse transform. The invention has the advantages of good fusion effect, little infection of the registration error on the fusion capability and being capable of effectively avoiding transferring the noise to the fusion images, and is applicable to the subsequent treatments and the image displays of the imaging systems.

The present invention is directed to ablation devices and methods utilizing pressure sensitive conductive composites, such as quantum tunneling composites, or other contact-sensitive, conductive polymers. The materials provide for electrodes and methods capable of differentiating between a soft and a hard push. The present invention thus provides an electrode for delivering selective electrical energy for ablation that may be varied based upon the pressure exerted on the surface area of the targeted tissue.

The invention discloses a high-performance large-scale MIMO downlink transmission channel estimation method, which mainly comprises the following steps: a base station generates a large-scale beam setto cover the whole cell through beam shaping, and all antennas of the base station synchronously send pilot sequences to a target user; the base station generates a large-scale beam set to cover thewhole cell. After acquiring the pilot information, the user constructs the compressed sensing channel estimation problem according to the designed pilot matrix and dictionary. According to the block sparsity of the channel gain function after over-complete dictionary sampling, the compressed sensing recovery algorithm based on block sparsity is used to estimate the channel vector, and the estimation result is the required channel vector. The invention improves the sparsity of the channel vector under the overcomplete dictionary by using the multi-band modulation DPSS matrix, improves the performance of the channel recovery, reduces the operation complexity of the algorithm, and reduces the pilot overhead through the use of the non-orthogonal pilot matrix.

The invention relates to a sulfur hexafluoride gas insulation totally-enclosed combined electric partial discharge detection and positioning system in order to conveniently detect and position the insulation defects of a gas insulation switch device from the outside. A central control unit is connected with an ultrahigh frequency signal receiver and an ultrasonic receiver; if a measured ultrahighfrequency signal and ultrasonic have continuous correlation, the position of the ultrasonic receiver on the external wall of the gas insulation switch device is changed for a plurality of times, and the time difference of maximum amplitude appearing in the amplitude characteristic map of ultrahigh frequency signals and maximum amplitude appearing in the amplitude characteristic map of ultrasonic on each detection position is recorded so as to calculate the distance between a discharge point and each detection position; and the position of the insulation defect in the gas insulation switch device is calculated according to the external dimension of the insulation switch device.

The invention provides an electron beam welding method for a pipe and a pipe sheet in a titanium alloy heat exchanger, which comprises the following steps: under the conditions that the coordinates of the center of a circle of the pipe to be welded are (x1, y1) and the coordinates of the center of a circle of a rotating table are (x0, y0), firstly, moving an XY worktable so as to enable the center of an electron gun to be positioned at (x1+R+L, y1); then, adjusting the electron gun so as to enable the beam spot of the electron gun to move to the position (x1+R, y1); adjusting the XY worktable while the rotating table rotates at a uniform speed so as to enable the rotating table to move along an X track and an Y track, so that the center of the circle of the pipe to be welded is kept in the position (x1, y1) and the pipe to be welded rotates at a uniform speed; and welding the joint of the pipe to be welded, which rotates to the position (x1+R, y1), and the pipe sheet by the electron gun with a fixed emission position and a fixed direction, wherein welding of one pipe is finished after the pipe to be welded rotates for a circle. The method provided by the invention can realize reliable welding of large-batch small-interval pipes and pipe sheets.

The invention relates to an instantaneous frequency stability based SWT logistics equipment vibration signal noise reduction method in allusion to problems that the material transmission accuracy is reduced and the operation risk is increased because of failure problems such as deviation and abrasion of the traditional transmission equipment due to long-term frequency use. The method comprises thesteps of (1) collecting vibration signals by using a vibration acceleration sensor; (2) performing segmentation processing at intervals on the obtained vibration signals according to a time sequenceto obtain a sampling point set; (3) performing time-frequency decomposition on the vibration segment signals obtained in the step (2) by using synchronous extrusion wavelet transform to obtain a synchronous extrusion wavelet variable and time-frequency diagram information; (4) performing selective extraction and reduction on the variable obtained in the step (3); and (5) calculating an instantaneous frequency curve of an IMT component obtained in the step (4) by using Hilbert transform. The scheme of the invention is applied to the instantaneous frequency stability based SWT logistics equipment vibration signal noise reduction method.

The invention provides a method for precisely machining a deep groove and a deep hole by varifocal lasers. The method comprises the steps that a plurality of focusing lenses with different focal lengths and workpieces are clamped; if deep groove machining is carried out, a laser beam is continuously output; laser etching machining is completed once; if deep hole machining is carried out, N laser pulses are output; the lasers are closed, and a working table moves to the original position; whether machining meets the requirements or not is detected; if machining meets the requirements, machining is finished; if machining does not meet the requirements, a focusing lens base is rotated, the next focusing lens is moved to the position of the current focusing lens, and laser machining is carried out again until machining meets the requirements. The pulse laser beam sequentially penetrates through the focusing lenses with the different focal lengths by rotating the focusing lens base, the focal lengths are progressively changed, the lasers are focused on the new exposed surface in the laser etching or punching process all the time, energy is more concentrated, the punching deep is larger, and the efficiency is higher. The invention provides a device for precisely machining the deep groove and the deep hole by the varifocal lasers at the same time.

The invention provides a sparse planar formation optimization method based on spatial gain. The method comprises the following steps that an array is initialized, a coordinate matrix formed by coordinate vectors of array elements is obtained, and spatial gain corresponding to the coordinate matrix is calculated; iteration parameters are set; iterative optimization is carried out on the initialized array, 5-N array elements in the array are sequentially disturbed in each iterative optimization, new coordinates of the array elements generated after each disturbance is finished are judged, the new coordinates meeting the judge conditions replace old coordinates of the array elements, the coordinate matrix is renewed, the interactive process is repeated until a set interactive total number is reached, an array manifold is received, and a coordinate matrix (x0,y0) which is renewed after iterative optimization is used as an array position of a sparse planar matrix. When an angle-directed face array is needed, a cost function can comprehensively evaluate side-lobe level and main-lobe beam width, and by means of the method, the sparse planar array with narrow main-lobe beam width and low side-lobe level can be generated.

Disclosed in the invention is a cascaded optical fiber respiratory sensing system comprising a voltage-stabilized power source, a broadband light source and a driving circuit thereof, an optical fibercoupler, a cascaded optical fiber sensor, a spectrum demodulator, a data acquisition card, a microprocessor and a display output unit. The cascaded optical fiber sensor being a single mode-less mode-multi-core-less mode-single mode cascaded fiber sensor comprises a multi-core fiber clamped and fused between a first less-mode fiber and a second less-mode fiber; the other end of the first less-modefiber is fused with an input single-mode fiber; and the other end of the second less-mode fiber is fused with an output single-mode fiber. Light from the broadband light source is coupled by the optical fiber coupler; the coupled light passes through the cascaded optical fiber sensor; a wavelength drift signal is received by the spectrum demodulator; the data acquisition card transmits the signalto the microprocessor; and the microprocessor carries out amplification, filtering, and separation on a series of wavelength drift signals to obtain respiratory signals. The system has advantages ofsmall size, light weight, simple structure, great easiness in preparation, high sensitivity and good performance of electromagnetic interference prevention and the like.

A sound frequency special effect editor based on acoustic parametric array acoustic beam reflection is composed of a sound source, an acoustic parametric array speaker array, an acoustic beam reflection body, an acoustic beam reflection body moving component and an acoustic beam reflection body motion control component. According to the sound frequency special effect editor based on the acoustic parametric array acoustic beam reflection, local transmission and reflection characteristics of high directivity acoustic beams generated by an acoustic parametric array are utilized, three dimensional multibeam dynamic mixed audio effects are achieved, and completely novel sound frequency special effect experience can be brought for the audience.

The invention discloses a deburring system and method for a paper carrier band. The deburring system and method are used in cooperation with a paper carrier band punching device at the same time. The deburring system is characterized by comprising a slicer pulling mechanism, a constant speed feeding mechanism, two discharging supporting wheels of the same height, an anode electrode and a cathode electrode, wherein the slicer pulling mechanism and the constant speed feeding mechanism are sequentially arranged on the rear side of a punching die, and the anode electrode and the cathode electrode are arranged between the two discharging supporting wheels. Meanwhile, the anode electrode and the cathode electrode are symmetrically fixed above the below a paper carrier band conducting constant speed discharging respectively. The anode electrode and the cathode electrode are connected through a high voltage pack, and an electric arc is formed in a hole punched in the paper carrier band. The deburring system and method have the advantages that the technology method is simple, power consumption is lowered, the environment is improved, the product quality is improved, and the deburring efficiency is improved.

The invention discloses a laser radar and a vehicle. The laser radar comprises a control unit, a first receiving circuit, a second receiving circuit, a first laser generator, a light splitter, and atleast one second laser generator. The first laser generator is used for transmitting a first laser beam. The light splitter is sued for splitting the first laser beam into a reference beam and a firstranging beam, sending the reference beam to the first receiving circuit, and transmitting the first ranging beam to a measured object. The at least one second laser generator is used for transmittinga second ranging beam to the measured object. The first receiving circuit is configured to convert the reference beam into a first electric signal; the second receiving circuit is configured to convert the first ranging beam or the second ranging beam that is reflected by the measured object into a second electric signal; and the control unit calculates a distance between the laser radar and themeasured object based on a time difference between the received first electric signal and second electric signal. Therefore, a technical problem of short detection distance of the related multi-azimuth ranging radar is solved.

The invention discloses a beam forming method and device, and belongs to the field of wireless communication. The method comprises the following steps: determining a channel matrix of a first reference signal; using a product of a preset directional beam weight vector matrix and a directional beam weighted coefficient matrix as a model matrix of a beam forming weight; using a product of the model matrix of the beam forming weight and a detection reference signal coefficient matrix H<SRS> as a channel matrix of a data signal; determining the model matrix of the beam forming weight satisfying a constraint relationship as a beam forming weight matrix according to the channel matrix of the first reference signal, the channel matrix of the data signal and a preset constraint relationship between the channel matrix of the first reference signal and the channel matrix of the data signal; and performing beam forming processing on the data signal according to the beam forming weight matrix. Through adoption of the beam forming method and device, the problem of relatively small antenna gain of a transmitting end is solved, and the effects of obtaining narrower beams, concentrating energy and increasing the antenna gain of the transmitting end are achieved. The beam forming method and device are applied to an MIMO (Multiple-Input Multiple-Output) system.

The invention relates to a Z-tangent LNOI electro-optical modulator capable of improving modulation efficiency and an application thereof. The Z-tangent LNOI electro-optical modulator comprises a substrate, an insulating layer, a waveguide core layer, an upper cladding layer, a signal electrode and a ground electrode, wherein a bottom of the substrate is provided with a groove; the insulating layer is disposed on the substrate; the waveguide core layer is arranged on the insulating layer, and a tangential direction of the waveguide core layer is Z-tangent; the upper cladding layer is arrangedon the waveguide core layer, is used for forming a refractive index difference with the waveguide core layer so as to limit transmission of an optical field, and is used as a support structure of an upper-layer electrode; the signal electrode is arranged at the position, corresponding to an optical waveguide, of the cladding layer and used for applying an electric signal to form an electric fieldto perform electro-optical modulation on light in the waveguide core layer; and the ground electrode is arranged in the groove, and an electric field between the ground electrode and the signal electrode is along an optical axis direction of the Z-tangent LN. In the invention, ultra-efficient electro-optical modulation of near 100% of the electric field to an optical field is realized so that a half-wave voltage of the modulator is greatly reduced, and power consumption of the modulator is reduced.

The invention belongs to the technical field of metal welding, and particularly relates to a laser induced variable polarity square wave tungsten argon arc welding method for a small-hole-diameter thin-walled tube. The method comprises the following steps that (1) a laser beam emitting gun and a variable polarity square wave tungsten argon arc welding torch are fixed, wherein the laser beam emitting gun is arranged on the front portion, the variable polarity square wave tungsten argon arc welding torch is arranged on the rear portion, and the part needing to be subjected to butting of the to-be-welded thin-walled tube is formed and butted, wherein the variable polarity square wave tungsten argon arc welding torch is located over a to-be-welded part, and the focus of laser beams is aimed atthe middle of the welded part of the to-be-welded workpiece; (2) the to-be-welded thin-walled tube is continuously formed and moved, the laser beams are emitted at first, then variable polarity square wave tungsten argon arc welding torch is ignited, and the to-be-welded part of the to-be-welded thin-walled tube is subjected to cathode cleaning and initial melting through arc spots, so that the surface of the welded part is in a high temperature molten state; and (3) then the laser beams are continuously irradiated to the welded part, and arcs of variable polarity square wave tungsten argon arc welding are continuously induced for completing continuous welding of the thin-walled tube.

The embodiment of the invention discloses a fast direction wavelet transforming method for image compression. The method comprises the following steps of: setting directions of an edge or a texture in the image; parting and dividing the image into sub blocks; determining the direction of the pixel of the edge or the texture corresponding to each sub block; executing wavelet lifting transformationalong the edge or the texture direction according to the direction of the pixel point in the image so as to centralize the energy of wavelet coefficients on the edge or the texture into a few coefficients having rather large absolute values and obviously decrease the absolute value of the wavelet-transforming high frequency coefficient. The quantized larger coefficient is easy to be reserved so as to obtain the reconstructed image with clearer edge or texture.

The invention provides a graphene far-infrared warm acupuncture device and an application device thereof. The warm acupuncture device comprises a plastic upper cover, a plastic tablet, a graphene far-infrared heating sheet, a plastic lower cover and a moxa medicine package. The plastic upper cover is a hollow cylindrical cavity, and the bottom thereof is annular. One side of the plastic upper cover is provided with a power supply line hole. One side of the plastic upper cover is connected with a power supply line through the power supply line hole. The top of the plastic lower cover is in matched connection with the bottom of the plastic upper cover. The plastic tablet and the graphene far-infrared heating sheet are positioned between the plastic upper cover and the plastic lower cover. The moxa medicine package is arranged at the bottom of the plastic lower cover. The warm acupuncture device is applied to a specific device, so that the device integrates graphene far infrared rays, acupuncture, the moxa medicine package and smoke therapy into a whole body. The use requirement of a user is greatly satisfied. According to the invention, through the structure improvements, the graphene far-infrared warm acupuncture device and the application device thereof have the characteristics of safety, stability, wide application range, controllable temperature, energy concentration, simpleand reasonable structure, low manufacturing cost, easy production, easy operation and high practicability.