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34results about How to "Smoothing" patented technology

Touch-point tracking, positioning and correcting method and system

The invention provides a touch-point tracking, positioning and correcting method and system. The method comprises the steps of: obtaining detection coordinates of five continuous and orderly touch points; obtaining a middle point between the first touch point and the second touch point as a first reference point; calculating a first correction point according to the first reference point and the third touch point; obtaining a middle point between the second touch point and the third touch point as a second reference point; calculating a second correction point according to the second reference point and the fifth touch point; calculating obtained coordinates according to the detection coordinate of the fourth touch point as well as the first correction point and the second correction point, and calculating a correction coordinate of the fourth touch point according to respective predetermined weights of the obtained coordinates; and repositioning the coordinate of the fourth touch point to the correction coordinate. The touch-point tracking, positioning and correcting method and system provided by the invention can be used for correcting obvious errors generated during detecting and positioning of the touch points, and carrying out smoothing treatment on a curve formed by connecting the five points.
Owner:GUANGZHOU SHIRUI ELECTRONICS

Gyro signal acquisition circuit and signal filtering system for three-axis inertially-stabilized platform

The invention relates to a gyro signal acquisition circuit and a signal filtering system for a three-axis inertially-stabilized platform, which are used for realizing the high-precision acquisition of angular rate information of the three-axis inertially-stabilized platform and providing feedback reference for the high-precision control of the platform. The gyro signal acquisition circuit comprises a signal amplification circuit, a signal transmission circuit, a voltage amplitude limit circuit and an analog-to-digital (A / D) conversion circuit of a DSP (Digital Signal Processor); and a signal filtering module comprises a static factor calibration part and an online sliding average filter part. According to the gyro signal acquisition circuit and the signal filtering system for the three-axis inertially-stabilized platform, weak gyro voltage signals are appropriately amplified, filtered and converted into current signals, the current signals are subjected to voltage amplitude limit and then enter an AD channel of the DSP, the original analog signal acquisition is carried out, useful information is extracted by the signal filtering module, and thus, the gyro voltage signals are converted into the true value of the angular rate of a framework of the platform.
Owner:BEIHANG UNIV

Three-dimensional scattered point cloud smoothing denoising method of anisotropic diffusion filtering

InactiveCN108022221AKeep feature informationAvoid too smoothImage enhancementImage analysisPoint cloudEigenvalues and eigenvectors
The invention discloses a three-dimensional scattered point cloud smoothing denoising method of anisotropic diffusion filtering. A tensor matrix structure tensor matrix is obtained by tensor voting ona sampling point and effective neighboring points thereof, eigenvalues and eigenvectors are solved, according to the eigenvalues and eigenvectors of the structure tensor matrix, local characteristicsof the sampling point are analyzed, the eigenvalues of a diffusion tensor matrix are designed according to different geometric feature information of the sampling point, diffusion rates are designedaccording to the different geometric feature information so that the diffusion rates in different principal feature directions are different, a modified diffusion tensor matrix is reconstructed, finally, the reconstructed diffusion tensor is substituted into a three-dimensional diffusion anisotropic filtering equation for differential solution, and after a certain number of iterations, a filteringfactor is obtained for smoothing noise. The method can effectively remove noise of the scattered point cloud and maintain feature information of an original model at the same time, thereby avoiding excessive smoothing and local distortion.
Owner:HEBEI UNIV OF TECH

Method for testing the peel strength of solid electrolyte membrane

The invention discloses a method for testing the peel strength of a solid electrolyte membrane, relates to the technical field of new energy lithium secondary batteries, and solves the problem of pooroverall application effect caused by complex operation and low data accuracy of a method for measuring the peel strength of the solid electrolyte membrane. The method comprises the following steps: step 1, respectively adhering adhesive tapes to a composite pole piece coated with a solid electrolyte membrane according to MD and TD directions; step 2, gently removing bubbles between the adhesive tapes and the composite pole piece by hands, and rolling back and forth by using a rubber roller to ensure that the pressure of each sample preparation is stable so as to obtain a sample; step 3, cutting the sample into sample strips with the same width along the outer edges of the adhesive tapes by using an art knife and a steel ruler; and step 4, lightly stripping one ends of the adhesive tapes to separate the solid electrolyte membrane adhered to the adhesive tapes from the composite pole piece, respectively clamping the adhesive tapes and the composite pole piece by using a clamp, and carrying out a peel strength test. The invention is simple to operate, good in repeatability, high in data accuracy and good in stability.
Owner:ZHEJIANG FUNLITHIUM NEW ENERGY TECH CO LTD +1

Gyro signal acquisition circuit and signal filtering system for three-axis inertially-stabilized platform

The invention relates to a gyro signal acquisition circuit and a signal filtering system for a three-axis inertially-stabilized platform, which are used for realizing the high-precision acquisition of angular rate information of the three-axis inertially-stabilized platform and providing feedback reference for the high-precision control of the platform. The gyro signal acquisition circuit comprises a signal amplification circuit, a signal transmission circuit, a voltage amplitude limit circuit and an analog-to-digital (A / D) conversion circuit of a DSP (Digital Signal Processor); and a signal filtering module comprises a static factor calibration part and an online sliding average filter part. According to the gyro signal acquisition circuit and the signal filtering system for the three-axis inertially-stabilized platform, weak gyro voltage signals are appropriately amplified, filtered and converted into current signals, the current signals are subjected to voltage amplitude limit and then enter an AD channel of the DSP, the original analog signal acquisition is carried out, useful information is extracted by the signal filtering module, and thus, the gyro voltage signals are converted into the true value of the angular rate of a framework of the platform.
Owner:BEIHANG UNIV

Touch-point tracking, positioning and correcting method and system

The invention provides a touch-point tracking, positioning and correcting method and system. The method comprises the steps of: obtaining detection coordinates of five continuous and orderly touch points; obtaining a middle point between the first touch point and the second touch point as a first reference point; calculating a first correction point according to the first reference point and the third touch point; obtaining a middle point between the second touch point and the third touch point as a second reference point; calculating a second correction point according to the second reference point and the fifth touch point; calculating obtained coordinates according to the detection coordinate of the fourth touch point as well as the first correction point and the second correction point, and calculating a correction coordinate of the fourth touch point according to respective predetermined weights of the obtained coordinates; and repositioning the coordinate of the fourth touch point to the correction coordinate. The touch-point tracking, positioning and correcting method and system provided by the invention can be used for correcting obvious errors generated during detecting and positioning of the touch points, and carrying out smoothing treatment on a curve formed by connecting the five points.
Owner:GUANGZHOU SHIRUI ELECTRONICS

Vineyard Stereo Air Sprayer

InactiveCN104604830BReduce shockReduce wind pressure lossInsect catchers and killersDiaphragm pumpSprayer
The invention relates to a three-dimensional air-assisted sprayer for a vineyard. The three-dimensional air-assisted sprayer comprises an air conveying system, a spraying system, an electric control operation system, a drive system, breadth adjusting parts and a rack. Air inlets of a butterfly-type flow guide plate are connected with air outlets of an axial flow fan. The breadth adjusting parts are mounted on the two sides of the butterfly-type flow guide plate. The spraying system comprises a liquid pesticide box, a diaphragm pump, pesticide tubes, high-pressure spray nozzles and a pesticide box total switch. The pesticide tubes are fixed on the outer sides of breadth adjusting plates, and are connected with the high-pressure spray nozzles. The high-pressure spray nozzles and the air outlets of the butterfly-type flow guide plate are correspondingly arranged. According to the three-dimensional air-assisted sprayer for the vineyard, the breadth adjusting plates can be adjusted through a control box according to the actual distance between grape trellises in the vineyard, and the operation breadth of the sprayer is changed to be adapted to different distances of the grape trellises. Air flow conveyed by the axial flow fan is distributed to the air outlets through the flow guide plate, and secondary atomization of the sprayed liquid pesticide is achieved.
Owner:SHANDONG AGRICULTURAL UNIVERSITY
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