70results about How to "Increased level of precision" patented technology

The invention discloses a GNSS / INS integrated positioning and directioning algorithm based on a three-way Kalman filtering smoother.A GNSS obtains the position quantity by means of a carrier phase difference measured value, independent calculation of a strap-down inertial navigation system is adopted, a system noise covariance matrix and a state vector covariance matrix are given according to the precision level of an inertial navigation device, forward filtering is conducted, the estimation result at the moment of ending of the first time of forward filtering is taken as the initial information of inverse filtering, the estimation result at the moment of ending of inverse filtering is taken as the initial information of the second time of forward filtering, and smoothing is conducted on the estimation result of inverse filtering and the estimation result of the second time of forward filtering to obtain final position, speed and attitude angle information.Aftertreatment precision of GNSS / INS integrated navigation is improved, and precision during GNSS satellite malfunction and in the initial stage of data observation is improved especially.

The invention discloses a human motion energy consumption instrument, which mainly comprises a temperature acquisition unit for monitoring the temperature of an ambient environment, a tri-axis accelerometer data acquisition unit for monitoring human motion energy consumption and fat consumption, a measurement unit for monitoring a human heart rate, a central processing unit, a data storage unit, a display and key unit, a universal serial bus (USB) interface and power unit and a near field communication (NFC) unit. Human physiological parameter input and data processing and analysis software is loaded in the central processing unit, and a stride frequency-energy consumption and fat consumption prediction model is configured in the analysis software. The human motion energy consumption instrument can be used for monitoring the temperature of the ambient environment, estimating the motion energy consumption and the fat consumption and monitoring the heart rate in a motion process, and communicates with a personal computer (PC) terminal through a USB, or is connected with a mobile phone through an NFC function to realize scientific motions and the health management of balancing energy intake and energy consumption through a mobile phone transmission network.

The present invention consists of an x-ray goniometer which is positioned directly adjacent to processing machines used in the cutting, milling, drilling and shaping of crystal boules and crystal ingots, used in conjunction with an adjustable tilt platform capable of pitch, yaw and roll movement, to allow in-situ measurement and automatic adjustment of crystal orientation with respect to the processing machine. The goniometer may be secured to either the tool itself or a portion of the machine which is adjacent the piece to be worked. Various embodiments include an x-ray goniometer and adjustable tilt platform incorporated into a core drilling machine, wire saw, surface grinder, polishing apparatus, or orientation flat or notch grinder. Incorporating an x-ray goniometer and adjustable tilt platform directly into a crystal processing machine results in a significant decrease in overall processing time and labor, and a significant increase in precision when processing crystal ingots into a final product, such as a notched wafer.

The invention provides an anti-crosswind flight control method for a fixed wing unmanned plane. The anti-crosswind flight control method comprises during the flight process of an unmanned plane, the unmanned plane utilizes GPS navigation information to composite the current ground speed direction of the unmanned plane so as to control the ground speed direction of the unmanned plane to align to a target route point; according to the real-time lateral track deviation of the unmanned plane, utilizing gain negative feedback to correct the lateral track deviation; and according to the real-time lateral track deviation of the unmanned plane, utilizing a variable gain coefficient to generate a correction command so as to greatly improve the capability for anti-crosswind disturbance of the unmanned plane and effectively improve the track tracking speed and precision for the unmanned plane. The anti-crosswind flight control method for a fixed wing unmanned plane solves the problem that during the air cruise process for a current fixed wing unmanned plane, the track tracking precision is low because of crosswind disturbance so that oscillation at the horizontal and lateral direction of the unmanned plane easily occurs and stability and safety for flight are influenced.

The invention discloses an infrared detector absolute responsivity calibration device and method based on laser scanning. The device comprises an absolute spectral power responsivity device and an absolute spectral irradiance (radiance) responsivity device. The absolute spectral power responsivity device can calibrate the standard transmission detector absolute power responsivity. By designing theaperture geometry and radiation calibration method of an irradiance standard detector and a radiance standard detector, an absolute measurement of irradiance (radiance) function is achieved. An absolute spectral irradiance (radiance) responsivity calibration device is created to transmit the absolute magnitude of the standard transfer detector traceable to a cryogenic absolute radiometer to ausersensor, and performs ultra-fine spectral scanning of the user sensor in medium and long-wave infrared, obtains absolute spectral irradiance (radiance) responsivity, makes the calibration accuracy ofthe user sensor better than 2%, and plays a key role in improving the quantitative inversion level of the infrared optical remote sensor.

The invention discloses a manufacturing method of a dome deck panel of an LNG (liquefied natural gas) ship. The method specifically comprises the following steps: manufacturing a ribbed plate small assembly and a longitudinal small assembly; manufacturing a trunk deck middle assembly; manufacturing an external inclined top plate middle assembly; manufacturing a main deck middle assembly; manufacturing an internal inclined top plate middle assembly; combining the trunk deck middle assembly, the external inclined top plate middle assembly, the main deck middle assembly and the internal inclinedtop plate middle assembly to assemble the dome deck panel. According to the method, the dome deck panel is split into the multiple assemblies, the working face is comprehensively and effectively unfolded, so that the construction efficiency is effectively increased, the construction cycle is shortened, and the building efficiency of the ships is increased.

The invention discloses a portable pipe four-shaft hole cutter. The portable pipe four-shaft hole cutter comprises a portal frame mechanism, a rotating mechanism, an extending mechanism, a lifting mechanism and a gun swing mechanism, and is characterized in that the lower end of the portal frame mechanism is axially fixed on a pipe to be cut a hole; the rotating mechanism is fixed at the middle part of the portal frame mechanism; the extending mechanism is slidingly connected to the lower part of the rotating mechanism; the lifting mechanism is mounted at the tail end of one side of a horizontal moving mechanism; and the gun swing mechanism is fixedly connected to the lower end of the lifting mechanism. The portable pipe hole cutter has four joint degrees of freedom through simple structural design, includes a rotating motion of a rotating main shaft, an extension motion of the extending mechanism, a lifting adjustment of the lifting mechanism and angle adjustment of a cutting gun by the gun swing mechanism, satisfies such parameters as cut hole shape requirements and groove angles through change adjustment of four degrees of freedom, and has such advantages as light structure, low manufacturing cost, convenience for operation and easiness in field construction.

A plate double-side pressing mould-less incremental forming device comprises an external support, a moving mechanism and a forming mechanism. The moving mechanism is arranged on the external support. The forming mechanism is placed in the external support and is placed on a sliding table. The forming mechanism carries out mould-less incremental forming on plates through the moving mechanism which comprises a sliding table moving mechanism and a plate clamping frame moving mechanism. A first forming tool head and a second forming tool head are symmetrically arranged on two moving units of the sliding table moving mechanism, so that the two forming tool heads act on the two sides of each plate respectively, by feeding matching of the two forming tool heads, the plates carry out plastic deformation ceaselessly point by point, and accordingly various metal plate parts provided with convex curved faces and concave curved faces at the same time can be manufactured without concave-convex moulds, and compared with a traditional forming mould, the plate double-side pressing mould-less incremental forming device has higher machining flexibility. Meanwhile, the plate double-side pressing mould-less incremental forming device has the advantages of being high in locating and moving precision, stable in track, convenient to operate and low in cost.

The invention discloses a subdivision spectral scanning calibration device based on a supercontinuum laser and a monochromator. The device uses the supercontinuum laser as a lighting source of the monochromator and couples the supercontinuum laser into the monochromator. The monochromator is tuned to output monochromatic light, a part of light energy is reflected by the surface of a beam splitterand then enters a laser wavelength meter after the alignment, focusing and beam splitting, and so real-time monitoring of output wavelength and bandwidth can be realized. The remaining part enters a decoherence integrating sphere through the beam splitter to produce uniform a monochromatic surface light source. The absolute spectral radiance of the integrating sphere is obtained by a standard radiance detector traceable to a cryogenic absolute radiometer, Alternate measurement of the standard radiance detector and to-be-calibrated equipment can be realized through a linear displacement platform, the monochromator is sequentially tuned to output monochromatic light of different wavelengths, and so the spectral subdivision scanning calibration of the to-be-calibrated equipment can be realized. The device has wide application prospects in optical radiation measurement and high precision calibration of remote sensors.

The present invention belongs to the field of precise instrument and measurement technology, and is especially combined reference error separating method for cylindricity instrument with self reference and self calibration characteristic. Single sensor is used for measurement, and the workpiece is twice measured first being set forwards and then being set backwards. Through simple data processing, the shape error of the measured workpiece and the inclination of the track relative to the rotating axis of the main shaft may be separated, and this makes it possible to eliminate the influence of the inclination on the precise cylinder measurement completely and to raise the precision of space motion reference for cylinder measurement by over one order of magnitude.

The invention discloses a seawater pollution area identification method and device based on a high-resolution remote sensing image, and belongs to the field of digital image processing. The method comprises: firstly, performing sea-land automatic classification on remote sensing images through a supervised learning algorithm, a classification result can reach a high precision level through processiterative clustering, and meanwhile, compared with an existing sea-land boundary analysis and classification method, the operand being small; then, using the chlorophyll concentration difference andthe brightness difference of pollutant shadows existing between the marine pollution area and surrounding seawater; combining a normalized vegetation index related to chlorophyll, a normalized water body shadow index related to brightness, a segmentation-based image interpretation thought and a human eye vision-based saliency mechanism in remote sensing interpretation; through threshold segmentation, realizing extraction of a marine pollution area, respectively extracting an area with excellent water quality and a severely polluted area, and further obtaining a pollution transition area. The method provided by the invention provides convenient and accurate reference for marine pollution prevention and treatment.

A photoelectric sensor includes a light-emitting element and a light-receiving element and detects a mark on an object. Prior to the detection of the mark, a reference received light quantity level is sampled for the surface of an object not including the mark, for every color of light. A mark received light quantity level is then sampled for every color of light. The difference is obtained between the reference received light quantity level and the corresponding mark received light quantity level for each color of light. A ratio of the obtained difference to the reference received light quantity level is obtained. For the colors of light where the difference equals or exceeds a predetermined value, the color of light having the largest ratio is selected for emission from the light-emitting element in the detection of the mark.

The invention discloses a state of charge of battery planning method for global energy management of hybrid electric vehicles. The method comprises a discrete method of an SOC feasible domain of a vehicle power battery and the planning method of an SOC value, specifically includes a calculation of a corresponding moment of a boundary transition point of the SOC feasible domain, a calculation of aSOC maximum value at each time in the SOC feasible domain, a calculation of the number of discrete points and discrete intervals at each time in the SOC feasible domain, a calculation of the SOC valueunder a corresponding label at each time in the SOC feasible domain and the like. The discrete method achieves reasonable discretization within the feasible domain of a battery SOC based on the limitation of a maximum discrete interval of the SOC and the number of the discrete points of the SOC. The planning method finds an optimal control sequence by planning the SOC value, and achieves global optimality of energy management control. The method both ensures accuracy requirements of battery energy management calculations, and significantly reduces calculation loads and costs, and has high comprehensive performance.

A charging / discharging control method of a wind farm energy storage device is characterized by controlling the charging / discharging power of the energy storage device in a wind storage integrated system based on the prediction error of a wind farm power, monitoring the change of a wind farm actual output Pmk and a wind farm prediction output Ppk in a real-time on-line manner to obtain an actual relative error epk, taking a relative error value beta=25% as the demarcation point of the energy storage huff and puff power Psk and the standby control, using an energy storage device comparator to send a control signal to an energy storage device controller according to the comparison result of the actual relative error epk and the relative error value beta, and using the energy storage device controller to control the energy storage device to charge and discharge.

The invention provides an image dense matching method comprising the steps of extracting feature point images and establishing rotation and translation-invariant feature vectors; performing same-name primary matching to obtain a maximum same-name point pair subset with a stable relative relation; building a first Delaunay triangular network of two adjacent image planes and checking whether the topological relation of each pair of same-name triangles in the two adjacent images is correct; removing all same-name points with inaccurate topological relations, building a second Delaunay triangular network and calculating affine transformation parameters; calculating each non-feature image point position of dense matching in the first image, judging the topological containment relations between each non-feature image point and triangles in the second Delaunay triangular network, and calculating multiple initial same-name image point positions of the multiple affine transformation parameters in the second image; establishing a local correlation matrix of the two adjacent images; calculating and obtaining a dense matching result; and performing three-dimensional topography reconstruction on a stereoscopic observation area.

The present invention provides a selection of soybean planting seeds, including the material storage box, the selected box, the primary removal device, the sieve box, the selected device and the selected sorting device; the bottom of the inlet mouth mouthThere is a primary and miscellaneous device inside the selected box; the primary deepening device includes a shaft and filter rod; the filter rod is distributed on the axis of the middle line as the axis of the axis;The bottom of the sieve plate and a third -level sieve plate has a enhanced vibration motor; the right end of the first -class sieve plate is provided with a first -class storage box;The present invention can filter out impurities such as stems and leaves in the seed material through the setting of the primary deepening device, reduce the blocking of stems and leaves in the seeds, and facilitate subsequent fine screening of seeds.The present invention finely screens according to the weight, size and shape of the seeds in the seeds, which improves the precision level of the seeds, thereby increasing the germination rate and vitality of the seeds.

The invention relates to a high-precision combined photoelectric mast set system, belongs to the field of photoelectric resistance and especially relates to a high-precision photoelectric mast system. The high-precision combined photoelectric mast set system is used for solving the technical problem of the influences of a torsion clearance along an azimuth direction and the vibration along a pitching direction of a single-rod mast on a high-precision photoelectric resistance device on an operating platform. According to the technical scheme for solving the technical problem, the high-precision combined photoelectric mast set system comprises single-rod masts, a base, a mast fixing component, a torque motor, a fixing and hanging assembly for the middle part of a mast set and a mounting platform for a photoelectric resistance system. According to the structure design of the mast set composed of multiple single-rod masts, the inevitable axial torsion clearance of the single-rod masts during the working process is smartly eliminated, the capabilities of resisting wind load and resisting swinging are enhanced and the precision level along the pitching direction is increased.

The invention discloses an ecological protection red line-oriented human activity identification fusion method and system, and the method comprises the steps: obtaining an early-stage remote sensing image and a later-stage remote sensing image of a target ecological protection red line region, and carrying out the data preprocessing; inputting the pre-processed early-stage remote sensing image and the pre-processed later-stage remote sensing image into a pre-trained human activity identification model; recognizing a human activity pattern spot of the target ecological protection red line area as a first detection result; carrying out segmentation, calculation and analysis on the latest image data corresponding to the target ecological protection red line region based on geographic national condition data to obtain an identification change pattern spot as a second detection result; and fusing the first detection result and the second detection result to obtain a change detection pattern spot of the target ecological protection red line area. Compared with a traditional single identification method and a single data source, the method has the advantages that the extraction precision is improved, the later manual operation amount is effectively reduced, and the production efficiency is greatly improved.

The embodiment of the invention discloses a power consumption test method for a network service application of a terminal device. The method includes: identifying a signaling message in a process in which the network service application at a server side interacts with the terminal device; starting a power consumption parameter measurement process when the terminal device receives the signaling message so as to measure power consumption parameters in a process in which the signaling message is executed on the terminal device; and according to the power consumption parameters measured in the power consumption parameter measurement process, obtaining a power consumption corresponding to the signaling message. The embodiment of the application also discloses a power consumption test device and system for the network service application of the terminal device. The power consumption test method, device and system for the network service application of the terminal device are capable of testing power consumption on a signaling message level.

The invention discloses a digital control dieless former which is directly applied to forming of sheet metals. The digital control dieless former comprises a pedestal and two pairs of upright posts which are arranged on the left and the right of a pedestal respectively, wherein each upright post consists of two post brackets and a top beam; X axial guide rails are arranged on the pedestal; X axial platforms which can move on the X axial guide rails are arranged on the X axial guide rails; Y axial platforms are arranged on the top beams of the two pairs of upright posts; Y axial guide rails are arranged on the Y axial platforms; Z axial main shafts are arranged on the Y axial guide rails; the number of the X axial guide rails is two, and the two X axial guide rails are fixed on the pedestal through H-shaped steel; X axial lead screws are arranged on both insides of the X axial guide rails; the number of the Y axial guide rails is two, and the two Y axial guide rails are fixedly connected to both sides of the Y axial platforms through bolts; and Y axial lead screws are arranged on both insides of the Y axial guide rails. Because the digital control dieless former has a motion mechanism in the X direction, the Y direction and the Z direction and has the function of forming different sheet metals, and the X direction, the Y direction and the Z direction realize triaxial linkage when controlled by a computer, so the digital control dieless former adopts the means of single-point progressive dieless forming, thereby the forming process is highly automatic, the forming flexibility is greatly improved, and the precision level is obviously higher than that of manual forming.

The invention discloses a method for manufacturing a skull defect repair prosthesis. The manufacturing method comprises the following steps of 1) acquiring CT scan data of a skull; 2) performing three-dimensional reconstruction based on the CT scan data to obtain a three-dimensional skull model; 3) delineating a bone window of a skull with defects based on the three-dimensional model of the skull,and selecting at least 2 positions at the edge of the bone window; 4) at the positions selected in step 3), extending a reference arc from the edge of the bone window; 5) generating an inner surfaceprosthesis template and an outer surface prosthesis template through the reference arc; 6) performing intersection on the inner surface prosthesis template and the outer surface prosthesis template, taking a superposition part as a three-dimensional model of a skull repair prosthesis; 7) obtaining the skull repair prosthesis three-dimensional model, and processing to obtain the skull repair prosthesis according to step 6). The curvature and thickness of the skull repair prosthesis made by the method are closer to an original skull, the accuracy level of the skull repair prosthesis is improved,and original shape and appearance of skull defect portions are well restored.

The invention discloses a method of carrying out differential positioning by using a GLONASS single frequency signal. Single positioning can be carried out when only observation data of a GLONASS single frequency L1 are needed, and positioning does not rely on a combined mode with Beidou or GPS. Through difference and ambiguity calculation, a high-precision carrier phase positioning result can be achieved, the precision in a single epoch centimeter level can be achieved after the current ambiguity is fixed, the precision level is improved through short time smoothing, and the GLONASS positioning precision level is greatly improved. The method of the invention also supports combined positioning with Beidou or GPS, and the precision, the reliability and the stability are further improved.

A photoelectric sensor includes a light-emitting element and a light-receiving element and detects a mark on an object. Prior to the detection of the mark, a reference received light quantity level is sampled for the surface of an object not including the mark, for every color of light. A mark received light quantity level is then sampled for every color of light. The difference is obtained between the reference received light quantity level and the corresponding mark received light quantity level for each color of light. A ratio of the obtained difference to the reference received light quantity level is obtained. For the colors of light where the difference equals or exceeds a predetermined value, the color of light having the largest ratio is selected for emission from the light-emitting element in the detection of the mark.

A supporting roller unit with dual regulations is composed of supporting roller installing base, supporting rollers, the oblique iron regulator divided into upper and lower oblique irons, and single supporting roller holders on said upper oblique iron for local trimming of each supporting roller.

The invention provides an off-line phase compensation method for high-speed drift under a CVQKD system and a storage medium. The off-line phase compensation method comprises the following steps: stepA, setting and transmitting training data and effective data; step B, constructing an error function and solving an optimal value of the error function; and step C, solving an optimal compensation angle and implementing compensation. According to the method, the phase compensation precision of the CVQKD system based on the Gaussian modulation coherence state can be improved to 0.0001 rad when thephase drift speed is high.

The invention discloses a high-precision excircle grinding tool for shaft parts, belongs to the field of precision machining, and aims to provide a tool for processing high-precision excircles. The tool is made of a common cast iron material, and comprises a grinding sleeve body (1), an adjustable bolt (2) and an adjustable nut (3). According to the grinding tool, a grinding sleeve inner hole is shrunk through the adjustable nut and the adjustable bolt, the roundness change before and after the inner hole is shrunk does not exceed 1 micrometer, and a sextic harmonic wave is a main harmonic wave component in harmonic wave components of roundness. The roundness of the excircle ground by adopting the grinding tool is smaller than 0.2 micrometer.

The invention provides a multi-source remote sensing data product production workflow self-organizing method which comprises the following steps: S1, analyzing a remote sensing data product productionorder to obtain a pre-produced remote sensing data product name, and judging the feasibility of producing a remote sensing data product according to the remote sensing data product name; S2, acquiring an upper-lower hierarchical relationship of the remote sensing data product from a remote sensing data product upper-lower hierarchical relationship knowledge base; S3, obtaining a lower-level product and production data required for producing the remote sensing data product from a remote sensing data product dependency relationship knowledge base; S4, screening out optimal production data according to difference analysis of the satellite sensor characteristic parameters and the remote sensing data product; And S5, using a Kepler scientific workflow engine to organize the optimal productiondata of each lower-level product to form a physical workflow. The method has the advantages that the optimal data source is selected to improve the precision level of remote sensing data product production, and the automation level and the intelligence level of remote sensing data product production are improved.