989results about How to "Improve capture ability" patented technology

The invention relates to leadless cardiac pacemakers (LBS), and elements and methods by which they affix to the heart. The invention relates particularly to a secondary fixation of leadless pacemakers which also include a primary fixation. Secondary fixation elements for LBS's may passively engage structures within the heart. Some passive secondary fixation elements entangle or engage within intraventricular structure such as trabeculae carneae. Other passive secondary fixation elements may engage or snag heart structures at sites upstream from the chamber where the LBS is primarily affixed. Still other embodiments of passive secondary fixation elements may include expandable structures.

An integrated imaging apparatus for displaying images while capturing images of a scene, including an electronic display having an array of display pixels which are used to display image content; a plurality of apertures are integrated within the display, wherein each of the apertures includes at least one partially transparent pixel; and a plurality of capture devices each of which captures an image, and includes at least a lens and an image sensor array; wherein each capture device is operatively associated with at least part of a particular aperture of the display; and wherein the partially transparent pixels also provide light for image content display.

A new geometry ion trap and its use as a mass spectrometer is described. The ion traps can be combined linearly and in parallel to form systems for mass storage, analysis, fragmentation, separation, etc. of ions. The ion trap has a simple rectilinear geometry with a high trapping capacity. It can be operated to provide mass analysis in the mass-selective instability mode as well as the mass-selective stability mode. Arrays of multiple ion traps allow combinations of multiple gas-phase processes to be applied to the trapped ions to achieve high sensitivity, high selectivity and / or higher throughput in the analysis of ions.

An integrated imaging apparatus for displaying images while capturing images of a scene, including an electronic display having an array of display pixels which are used to display image content; at least one image capture device which captures an image, wherein the image capture device having at least an imaging lens and an image sensor array; and wherein the image capture device looks through an aperture in the display, the aperture having at least one partially transparent pixel; and wherein the partially transparent pixels also provide light to display image content.

The invention discloses a melt-blown polypropylene material as well as a preparation method and application thereof. The melt-blown polypropylene material comprises the following components: 80-99 parts of polypropylene resin; 0.5 to 10 parts of antibacterial and antiviral electret masterbatch; 0.1 to 1 part of a free radical initiator; 0.1 to 0.5 part of a nucleating agent; 0.01 to 3 parts of anantioxidant; 0-3 parts of a lubricant. According to the invention, inorganic antibacterial and antiviral particles are introduced into melt-blown polypropylene; the material is endowed with intrinsicantibacterial and antiviral characteristics; after the melt-blown non-woven fabric is prepared, when viruses and bacteria are filtered, the viruses and bacteria remain on the melt-blown layer, the nano material on the composite material can rapidly wrap the viruses and bacteria, attack the bacteria and viruses, synergistically destroy the structure of the bacteria and viruses and block electron transfer of the bacteria and viruses, so that the effects of killing the viruses and bacteria and the like are achieved, and the material has excellent antibacterial performance and antiviral performance and high filtering efficiency.

The invention relates to a double-camera automatic coordination multi-target eagle eye observation system and an observation method thereof. The system comprises a hardware platform, a wide angle camera, a pan / tilt / zoom (PTZ) camera, a processor and a multi-channel video acquisition card. The observation method comprises the following steps of: calibrating two cameras to obtain an angle that a moving camera rotates and aligns with any position of the wide angle camera; detecting moving targets from the wide angel camera, and tracking and marking; selecting a target; controlling the PTZ camerato zoom and track if the target moves fast; amplifying the target if the target moves slowly; positioning interested characteristics; and secondarily amplifying and observing an interested region. The system has the advantages of low cost, simple implementation and the like, and can be widely applied to multi-target video tracking fields such as robots, intelligent transportation, video monitoring and the like.

A three section linear or two-dimensional (2D) quadrupole ion trap as a high performance mass spectrometer is described. Mass analysis is performed by ejecting ions radically out a slot formed in one of the rods using the mass selective instability mode of operation. The slot geometry is optimized to yield high ejection efficiencies. Resolution can be controlled by using appropriate end section potentials to control the axial spread of the ion cloud. Multiple detectors can be used for enhancing sensitivity and for enabling enhanced ion analysis techniques in the ion trap.

The present invention discloses a solar cell sheet, comprising a back sheet, a plastic front sheet and a solar cell circuit between the back sheet and the plastic front sheet, wherein the plastic front sheet possesses a first light receiving surface and a second surface adjacent to the solar cell circuit, wherein the second surface possesses a surface texture capable of improving light trapping property. It also discloses a method for the preparation of the same.

A two-way communication system for viewers at first and second sites, including an integrated imaging apparatus at the first site for displaying second site images from the second site while capturing first site images from the first site and sending them over a channel to a second site; a structure at the second site coupled to the channel and responsive to images from the integrated imaging apparatus to display such first site images and capturing second site images sending them over the channel to the integrated imaging apparatus; wherein the integrated imaging apparatus, includes, an electronic display having an array of display pixels in which at least one display pixel is partially transparent; and at least one image capture device which is operably associated with the partially transparent pixel.

The present invention discloses an interactive IR electronic white board, around which is an infrared emitting and receiving array. An output port of a column driver of emitting array is connected to high frequency modulating signal generator, and an output port of a column driver of the receiving array is connected to a microprocessor through a signal receiving circuit and an analog-digital converter A / D. The emitting array and the receiving array are connected to emitting and the receiving driver through emitting and receiving driver lines, and the emitting driver and the receiving driver are connected with the microprocessor through address bus. The present invention utilizes the Inverse Square Law of optical theory and the linear direct ratio relation between the quantity change of light particles received by an infrared receiving diode and the output voltage of the receiving diode to associate the output voltage of the receiving diode with the interrupted width of the infrared light path, so that it can calculate the coordinate of interrupter accurately and improve the resolution of infrared scanning. The present invention can not only distribute pens or erase, but can be used by plurality of users at the same time as well.

The invention discloses a preparation method of a lignin-based dithiocarbamate heavy metal ion capture agent. The method comprises the steps of: (1) adding water into lignin and stirring them, adding an alkaline conditioning agent to adjust the pH to 9-11, then adding an oxidizing agent, conducting heating to raise the temperature to 80-90DEG C for reacting for 1-2 hours; (2) adding an amination reagent, maintaining the reaction temperature at 80-90DEG C, then adding formaldehyde to react for 5-6 hours; (3) cooling the solution to room temperature, adjusting the pH value to 10-11, then adding carbon disulfide to perform an esterification reaction for 4-5 hours at 40-45DEG C; and (4) adding a modifier for reacting for 1-2 hours, then carrying out pumping filtration, and then conducting washing 2-3 times with water and absolute ethyl alcohol, thus obtaining a solid product, i.e. the lignin-based dithiocarbamate. The lignin-based dithiocarbamate heavy metal ion capture agent provided in the invention has the advantages of simple preparation process, low production cost, excellent performance, adaptability to treatment of various heavy metal ion polluted wastewater, good stability, and wide applicable range.

The invention discloses a visual target tracking method based on self-adaptive subject sensitivity, and belongs to the technical field of computer vision. The visual target tracking method comprises an overall process, an offline part and an online part. The whole process includes: designing a target tracking process, and designing a network structure; adjusting the feature map of each stage of the network into an adaptive size to complete the end-to-end tracking process of the twin network; the offline part comprises six steps: generating a training sample library; carrying out forward tracking training; calculating a back propagation gradient; calculating a gradient loss item; generating a target template image mask; and training a network model and obtaining the model. The online part comprises three steps: carrying out model updating; carrying out online tracking; and positioning a target area. The model updating comprises forward tracking, back propagation gradient calculation, gradient loss item calculation and target template image mask generation; the online tracking comprises the steps of performing forward tracking to obtain a similarity matrix, calculating the confidencecoefficient of a current tracking result and returning to a target area. The method can better adapt to target robust tracking of appearance changes.

The embodiment of the invention provides a medical image detection method and device based on deep learning, a computer readable medium and an electronic device. The method comprises the steps of obtaining a to-be-detected medical image, wherein the to-be-detected medical image comprises a plurality of adjacent slice images; extracting to obtain N basic feature maps of each slice map through a deep neural network; performing feature fusion on the N basic feature maps of each slice map to obtain M enhanced feature maps of each slice map; performing a hierarchical void convolution operation on each enhanced feature map to generate a superposition feature map of each enhanced feature map; predicting focus position information and confidence coefficient thereof in the to-be-detected medical image according to the superposition feature map; wherein N and M are both positive integers greater than 1. According to the technical scheme provided by the embodiment of the invention, the target detection accuracy of the medical image can be improved.

The invention discloses a GPS signal large-scale parallel quick capturing method, which comprises the following steps: configuring a large-scale parallel quick capturing module firmware comprising submodules of multiplier, data block cache, parallel part correlative processing, frequency domain transformation, postprocessing and digital controlled oscillator, code generator and the like in a system CPU; through the calling computation, converting low-medium frequency digital signals into baseband signals in a processing procedure to combine a data block; performing zeroing extension of the length and the data block on each equational data section in the data block; then based on FFT transformation computation, performing parallel part correlative PPC processing on each extended data section and local spreading codes, and performing FFT transformation on each line of a formed PPC matrix to obtain a result matrix; and performing coherent or incoherent integration on a plurality of result matrixes formed by processing a plurality of data blocks to increase the processing gain, improve the capturing sensitivity, roughly determine the code phase and the Doppler frequency of GPS signals, and achieve two-dimensional parallel quick capturing of the GPS signals. The method has high processing efficiency and high capturing speed, and can be applied to various GPS positioning navigation aids.

The invention relates to a high dynamic satellite navigation signal rapid capture and tracking system and method. The method comprises the following implementation steps that S1, related parameters are set according to the capture requirements, and intermediate frequency signals are read to be mixed with local carrier; S2, windowing is performed on PMF and FFT modules based on the conventional PMF+FFT to implement capturing; S3, an adaptive threshold adjustment method is adopted on signal peak judgment after FFT operation so as to obtain the capture result; S4, the process enters the tracking stage, frequency mixing and pseudo code correlation are performed on the intermediate frequency data and the result after correlation is integrally cleared so as to obtain a coherent integral value; S5, dimension enlarged unscented Kalman filter is adopted for carrier tracking, and the state vector optimal estimation value is obtained according to the dynamic model and the measurement model of the system; and S6, the conventional code ring under carrier aiding is adopted in code tracking. According to the method, the problems of rapid capture and tracking of the high dynamic satellite navigation signals can be solved, and the dynamic performance can be 100g.

The invention discloses a spherical cavity type solar heat absorber with an inwardly concave glass cover. The heat absorber is mainly used for collecting sunlight and converting the sunlight into heat energy in a butterfly type solar high-temperature heat utilization system. The heat absorber mainly comprises a heat exchange coil pipe, the inwardly concave glass cover, an outer shell, an inner shell, a vacuum layer, a reflective wind shield and a heat conductive fluid. Different from the traditional opening type heat absorber and the cavity type heat absorber with the glass window at the cavity opening, the cavity type heat absorber disclosed by the invention is the opening type spherical heat absorber with the inwardly concave glass cover, therefore, the cavity type heat absorber not only has the light capturing capacity of the opening cavity type heat absorber but also has low heat loss of the cavity type heat absorber with the glass window at the cavity opening; meanwhile, the cavity type heat absorber is provided with the reflective wind shield, therefore, the capturing on deviated light can be strengthened, and the heat radiation on the inner wall and the convection heat transfer loss resulted from external natural wind can be reduced; and the cavity type heat absorber comprises the vacuum layer between the inner shell and the outer shell, therefore, the lost heat throughthe shells can be effectively reduced.

The invention provides a multiple optical tweezers integrated with a single fiber, comprising a multi-core fiber 1 having a plurality of fiber cores 2 in a public cladding, wherein, a multi-angular wedge with a symmetric shape or an asymmetric shape is formed on one end of the multi-core fiber through a grinding process, a large gradient optical field switch region is formed by a side 3 of the multi-angular wedge and a head face 6 of the fiber. Compared with other optical tweezers, improvements of the invention is mainly reflected in: (1) inventing the optical tweezers using the multi-core fiber to trap a plurality of small particles at the same time, and implementing a modification of an optical potential well and an amount of captured particles through adjusting the number of fiber cores; (2) inventing an implementation of simultaneous trapping of a plurality of small particles with different space geometrical arrangements through adjusting the structure of geometrical arrangement of the fiber cores; (3) greatly improving the trapping force of the optical potential well based on a light beam total reflection-refraction focusing principle. Based on the improvements, the invention implements a combination and an integration of multiple fiber optical tweezers, and makes the trapper character of the optical tweezers greatly improved.

The invention relates to the technical field of radars and the field of human motion, and provides a human motion open-set identification method based on a radar image and a generation countermeasuremodel. The method includes directly distinguishing the input image into a known or unknown motion category and outputting the category information of the input image so as to realize the end-to-end open-set identification of the human motion. Therefore, according to the human motion open-set identification method based on the radar image and the generation countermeasure model, the characteristicof the human micro-motion can be reflected by means of the micro-doppler image of the radar, and meanwhile, a discriminator in the generation countermeasure model is used as an open-set identifier, the input image can be directly distinguished into a known or unknown motion category and the category information of the input image can be output, so that the end-to-end open-set identification of thehuman motion can be realized. The method is mainly applied to the technical field of radars and the human motion identification occasions.

The invention discloses an ultrasonic image automatic understanding and generation method, and relates to the technical field of computer information processing. The method comprises the steps of extracting an ultrasonic image eigenvector by a CNN model, performing word segmentation on a descriptive sentence corresponding to an ultrasonic image by a word segmentation tool, and obtaining a word sequence eigenvector; training an LSTM model by utilizing the ultrasonic image eigenvector and the corresponding word sequence eigenvector; and generating a plurality of proper sentences at a time step by the LSTM language model through utilizing a beam search method, and generating the sentence for describing the ultrasonic image according to probability estimation. The method can well solve the problem that adjustment cannot be carried out in time when a new combination situation occurs in conventional image topic description and automatic generation. The method can be widely used for understanding and statement description of the ultrasonic image.

Reversible acid-gas binding organic liquid systems that permit separation and capture of one or more of several acid gases from a mixed gas stream, transport of the liquid, release of the acid gases from the ionic liquid and reuse of the liquid to bind more acid gas with significant energy savings compared to current aqueous systems. These systems utilize acid gas capture compounds made up of strong bases and weak acids that form salts when reacted with a selected acid gas, and which release these gases when a preselected triggering event occurs. The various new materials that make up this system can also be included in various other applications such as chemical sensors, chemical reactants, scrubbers, and separators that allow for the specific and separate removal of desired materials from a gas stream such as flue gas.

The invention discloses a thrombus extraction support device. The thrombus extraction support device comprises a thrombus extraction support, a conveying guide wire, a guiding guide wire and marking rings, and is characterized in that the thrombus extraction support is composed of a front thrombus extraction support body and a back thrombus extraction support body; the marking rings include the middle-section marking ring and the near-end marking ring, the back end of the front thrombus extraction support body is fixedly connected with the back thrombus extraction support body through the middle-section marking ring, and the front end of the front thrombus extraction support body is fixedly connected with the guiding guide wire so that vascular irritation of the front thrombus extraction support body can be effectively reduced, and vasospasm in the thrombus extraction process can be prevented; the back end of the back thrombus extraction support body is fixedly connected with the near-end marking ring, the front end of the conveying guide wire is connected with the near-end marking ring, and the back end of the conveying guide wire is connected with a microtubule so that the front thrombus extraction support body and the back thrombus extraction support body can successively carry out thrombus extraction, and thrombus can be effectively prevented from falling in blood vessels. Due to the structure, the thrombus extraction support device has the advantages that the structure is simple, the capturing performance is high, thrombus extraction is complete, vasospasm is prevented, and the blood flow recovering velocity is high.