30results about How to "Effective precision" patented technology

The invention discloses a high-temperature three-dimensional digital image related measurement system and a high-temperature three-dimensional digital image related measurement method. The system comprises a digital camera, an imaging lens, band-pass optical filter, a monochromatic light source, a calibration board, a support system and a computer, wherein the support system consists of a triangular bracket, a guide rail and a translation stage; and the computer is used for acquiring a digital image and performing analysis processing. The measurement method comprises five steps. In the system, the band-pass optical filter is arranged in front of the imaging lens of the digital camera, so that the influence of the thermal radiation of a high-temperature object on the brightness enhancement of an acquired image of the camera can be reduced effectively. In the measurement, a measured object is lighted by adopting the monochromatic light source of which the lighting wavelength is positioned in a band-pass range of the band-pass optical filter. By using the system and the method, a brilliant image of the surface of the high-temperature object at the surface temperature of over 500 DEG C is acquired, wherein the image can be directly analyzed and processed by a three-dimensional digital image related method to acquire the three-dimensional morphology of the surface of the high-temperature object and a three-dimensional deformation field under the action of a thermal load. The system has a compact structure, is convenient to operate, and has a wide application range and high measurement precision.

An automatic gain control (AGC) apparatus of a wireless mobile terminal, and method, in an orthogonal frequency division multiple access (OFDMA) system. A gain amplifier controls an amplification gain of received analog symbols. An analog-to-digital converter converts the received analog symbols into a digital signal. A fast Fourier transform (FFT) unit converts the digital signal into a frequency-domain signal. A power measurer measures power in the frequency domain in units of sub-carriers. A sub-carrier power accumulator detects a sub-carrier carrying a signal, and accumulates its power value. A sub-carrier average power measurer estimates an average power value transmitted per sub-carrier from the accumulated power value. A control means compares the estimated average power value with a reference power value, and generates a control signal used for controlling a gain of the gain amplifier according to the comparison result.

The invention provides a multi-joint industrial mechanical arm. The multi-joint industrial mechanical arm comprises a base, a first joint and a first driving device are installed at the upper end of the base, two swinging arms and a swinging driving device are installed on the first joint, a second joint and a second driving device are installed on the swinging arms, and the swinging driving device comprises a swinging motor fixed to the upper end of the first joint and located between the two swinging arms. One end of the second joint is connected to the upper ends of the two swinging arms in a rotating mode and located between the two swinging arms, and the second driving device comprises a second motor which is located between the two swinging arms and is close to the swinging motor. Through arranging the two swinging arms, torsion transferred by the joints is distributed to the two swinging arms, meanwhile, the gravity center of the swinging motor and the gravity center of the second motor are low according to the arrangement positions, the torsion borne by the swinging arms is effectively lowered, the structure is simple, the service life is long, and working stability is good.

The invention discloses an INS/DR & GNSS loosely integrated navigation method based on an MEMS inertial component. The INS/DR & GNSS loosely integrated navigation method comprises the following steps:establishing a state differential equation by taking a position error, a misalignment angle and gyro zero offset of an INS/DR system and a scale factor of a speedometer as state vectors; establishingan observation equation according to the position information of the GNSS system and the position information of the INS/DR system; enabling the state differential equation and the observation equation to enter a Kalman filter iteration process to calculate a state vector of the INS/DR system; correcting the position, the speed, the attitude angle and the gyro zero offset error of the INS/DR system by using the state vector to obtain corrected position, speed and attitude information. According to the invention, the performance of a navigation-level device is achieved by adopting a consumption-level IMU, and the gyroscope thermally-induced zero offset estimation method can be used for autonomous learning and adaptive compensation in the system operation process without any offline calibration; the installation error estimation algorithm provided by the invention can be used for autonomous estimation, and strict requirements on assembly are not needed any more.

To provide a slurry for polishing which is excellent in polishing properties, can suppress scratches and is appropriate for accurate polishing in semiconductor production steps, and fine particles of oxide crystal for it.

Fine particles of oxide crystal, characterized in that the ratio of the crystallite size measured by X-ray diffraction method and calculated by Scherrer method to the average primary particle size equivalent to sphere from the specific surface area measured by BET is the crystallite size: the average primary particle size=1:0.8 to 1:2.5. A slurry for polishing, characterized in that the fine particles of oxide crystal are dispersed in a liquid medium, and from 0.1 to 40 mass % of the fine particles of oxide crystal are contained, per the total mass of the slurry for polishing.

An Automated Surgical instrument is disclosed that is computer controlled and provided with a high degree of autonomy for performing automated procedures within humans and other animals. It may be mobile under its own control and may include a plurality of means to disrupt tissue including lasers and water jets. A method of providing barriers to prevent unwanted damage to tissue is also described. The instrument may be used to construct both artificial and biological structures in-vivo by taking advantage of 3D printing techniques made available by the flexible laser system disclosed, a selection of micro tools, and raw material delivery to the worksite for printing to the target area. The use of vibration generated electricity may avoid the need for wires or batteries. A particular embodiment for automated cataract surgery is described.

The present invention provides a compound shown by the formula (1),

wherein R¹ represents a hydrogen atom, a fluorine atom, a methyl group, or a trifluoromethyl group; A represents a single bond or a linear divalent hydrocarbon group having 1 to 30 carbon atoms or a branched or cyclic divalent hydrocarbon group having 3 to 30 carbon atoms, in which the hydrocarbon group may contain a heteroatom, and a part or all of hydrogen atoms in the hydrocarbon group may be substituted with a group containing a heteroatom; “n” represents 0 or 1, provided that “n” is 0 when A is a single bond; and M⁺ represents a cation. This compound is suitable as a raw material of a polymer compound usable for a base resin of a resist composition that has high resolution and high sensitivity and is excellent in balance of lithography properties such as LWR and CDU.

The invention relates to a mixed pixel decomposition method based on local similar pixels. remote sensing image data is used as a data source;screening rules are set, pixels with the same spectrum composition is selected to construct a reasonable and effective mixed spectrum matrix; and the soil spectrum and the vegetation spectrum are separated from the mixed spectrum matrix by adopting a non-negative matrix decomposition method to extract the soil spectrum information, and the influence of external factors such as vegetation coverage on the soil spectrum information is weakened, so that theremote sensing prediction precision of the soil attribute information is improved. The method has important significance for improving the existing remote sensing monitoring precision of soil properties, provides a new method and thought for large-area, rapid and accurate drawing and updating of the soil properties, and further promotes the development of the field of obtaining soil information based on the remote sensing technology.

Methods and apparatus for treating melasma and/or related hyperpigmentation disorders of a patient are disclosed. The treatment includes delivering laser pulses onto a body of the patient, wherein the delivering laser pulses includes two or more of the following steps: i) delivering laser pulses p₁ onto the body, wherein each pulse of the laser pulses p₁ is configured to have a diameter of at least 100 μm and a duration of at most 1 μs; 2) delivering laser pulses p₂ onto the body, wherein each pulse of the laser pulses p₂ is configured to have a diameter of at least 100 μm and a duration of more than 1 μs; 3) delivering laser pulses p₃ onto the body, wherein each pulse of the laser pulses p₃ is configured to comprise a plurality of microbeams, each microbeam having a diameter below 1 mm.

This invention provides an optical disk effective in both precision and productivity, and to a process for the manufacture thereof. The optical disk allows reading of the information recorded on each information-recording surface of the two or more information-recording surfaces by varying the focal position of a playback laser beam incident on and passing through said light transmitting substrate; and the optical disk is provided with a transparent layer that is laminated onto the light transmitting substrate and is constituted of a thermoplastic resin sheet of uniform thickness and the transparent layer has an information-recording surface other than the surface of said light transmitting substrate formed thereon.

The invention provides a three-cone view angle fusion method and system for improving surface defect detection precision and a medium. The method comprises the following steps: step 1, shooting a three-cone view angle graph of a sample; 2, preparing a defect-free graph corresponding to the sample, sending the defect-free graph to a feature matching model, and extracting a first feature graph; 3, sending the three-cone view angle image into a feature matching model in a queuing manner, and extracting a second feature image; 4, sending the first feature map and the second feature map into a homography matrix network to obtain a conversion matrix; 5, performing downsampling on the second feature map; 6, sending the down-sampled picture into a conversion matrix to obtain a conversion graph; 7, carrying out channel level fusion on the transformation graph to form a three-channel fusion graph; and 8, sending the three-channel fusion image into a detection model, and learning to obtain depth information. Based on the three-channel fusion, feature matching and other methods, the problems of background interference and concave-convex defects are solved, and the surface defect detection precision can be effectively improved.

A coating method for liquid crystal alignment film of TFT-LCD including: forming a layer of hydrophobic film on a TFT/CF substrate corresponding to a non-display area, the hydrophobic film separates the TFT/CF substrate into a plurality of rectangular opened areas which are separated from each other, each of the rectangular opened areas corresponds to a display area and its outer frame is formed by the hydrophobic film; and coating of a liquid of a material of an alignment film along a boundary of the rectangular opened area. Accordingly, edge waves caused by spreading of drips of the material of the alignment film can be reduced, so that a precision of printing of the alignment film can be controlled effectively.

The invention discloses a coal washing mechanism with a filtering mechanism and for separating waste water, and belongs to the technical field of coal washing mechanisms. The coal washing mechanism comprises a machine shell, a combined connecting piece, a dewatering mechanism, a vibration shell and a vibration block, a water collecting shell is fixedly installed on the inner wall of the top face of the machine shell, water spray heads are fixedly installed at the bottom of the water collecting shell, and a dewatering mechanism is rotatably mounted in the center of the bottom of the water collecting shell on the two sides of the water spray heads; According to the coal washing mechanism, the dewatering mechanism is arranged in the coal washer and consists of dewatering blades, a mounting shaft and a shaft sleeve, and the inclined water spray heads are arranged on the two sides of the dewatering mechanism correspondingly due to the inclined surface design of the dewatering blades, so that the inclined water spray heads spray water during coal washing, and different pressures can be generated on the inclined surfaces of the dewatering blades; and due to the fact that stress on the dewatering blades is uneven, the dewatering blades can rotate around the mounting shaft, water on the dewatering blades can be dispersed, the spraying range and the spraying width of coal washing liquidare greatly increased during coal washing, and the coal washing effect is effectively improved.

The invention relates to the technical field of photovoltaic fault detection, discloses a photovoltaic fault detection characteristic quantity extraction method, and provides an MPPT (maximum power point tracking) maximum power point and equivalent resistance Rs, open-circuit voltage Voc, maximum power point current Im and maximum power point voltage Vm which are extracted on the basis of a trust region affine algorithm in combination with an optimization observation perturbation algorithm and an optimization conductance increment algorithm. According to the method, the defects of the perturbation algorithm are overcome through an incremental conductance method, and results obtained through two kinds of detection are comprehensively considered to determine the maximum power point, so that the accuracy of the algorithm is improved. The method comprises the following steps: extracting characteristic parameters of an I-V curve by using a trust region affine algorithm, calculating each characteristic quantity, comprehensively judging a photovoltaic array fault, and combining the characteristic quantity with MPPT (Maximum Power Point Tracking) to detect whether data is wrong or not so as to achieve high-precision detection.

The invention belongs to the field of image processing, and discloses a trunk two-way image semantic segmentation method, which specifically comprises the following steps: inputting an image into a semantic segmentation model for feature extraction to obtain an initial feature map; after the initial feature map is processed by a residual network, performing primary semantic fusion on the initial feature map and the initial feature map subjected to down-sampling and residual network processing to obtain a primary fusion high-resolution feature map and a primary fusion low-resolution feature map; performing residual network processing on the primary fusion high-resolution feature map, and performing secondary semantic fusion on the primary fusion high-resolution feature map and a primary fusion low-resolution feature map subjected to down-sampling and residual network processing; and obtaining a third-level fusion high-resolution feature map and a third-level fusion low-resolution feature map; processing the three-level fused high-resolution feature map through a residual network; carrying out third semantic fusion on the three-level fused high-resolution feature map and the three-level fusion low-resolution feature map subjected to down-sampling and residual network processing; and obtaining a five-level fusion feature map; and carrying out up-sampling on the five-level fusion feature map through a decoder to obtain an image semantic segmentation result.

The invention relates to the technical field of special turning, in particular to a complex formed multi-tooth tool. The complex formed multi-tooth tool comprises at least two rough cutting teeth andat least one finish cutting tooth successively arranged in a feeding direction. The rough cutting teeth and the finish cutting teeth form a comb-like structure together. Each rough cutting tooth comprises a first cut-in surface of the rough cutting tooth, a top line of the rough cutting tooth and a later cut-in surface of the rough cutting tooth. Each finish cutting tooth comprises a first cut-insurface of the finish cutting tooth, a top line of the finish cutting tooth and a later cut-in surface of the finish cutting tooth. The later cut-in surface of the rough cutting tooth and the later cut-in surface of the finish cutting tooth are homodromous. The included angles between the first cut-in surfaces of all the rough cutting teeth and a vertical direction are larger than those between the first cut-in surfaces of all the finish cutting teeth and the vertical direction. The invention further relates to a machining method and an application method of the complex formed multi-tooth tool. According to the invention, a vibrating problem in a tool using process can be reduced effectively, so that the tool is stressed in a balanced manner, and therefore, the service life of the tool isprolonged and the machining precision is improved.

The invention belongs to the field of camellia oleifera fruit separation, and particularly relates to a separation elevator for camellia oleifera fruit production. The separation elevator comprises a feeding lifting device, wherein one end of the feeding lifting device is provided with a discharge port, a plurality of conveying belt devices A are arranged below the discharge port from top to bottom, the conveyor belt devices A are obliquely arranged and are distributed in a step shape, the feeding lifting device is used for outputting raw materials to the uppermost conveying belt device A from the discharge port, the conveying direction of the conveying belt device A is from bottom to top, and the conveying belt device A is used for conveying shells in the raw materials upwards and outputting the shells and enabling fruit seeds to roll to the other adjacent conveying belt device A below the conveying belt device A so as to achieve a multi-stage separation function, the bottoms of the conveying belt devices A are rotatably connected with a bracket, and the conveying belt devices A are each provided with an adjusting mechanism for adjusting the inclination angle of the conveying belt device A. According to the invention, the separation elevator has the beneficial effect that seeds and shells can be effectively and finely separated.