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733results about How to "Expand the scope of use" patented technology

Substance content detection method, system and device based oncolordata analysis

The invention belongs to the field of content detection of color-changed substances, and specifically relates to a substance content detection method, system and devicebased on color data analysis. According to the technical scheme, the method mainly comprises the following steps: S1, creating a standard sample color database; S2, selecting color data corresponding to a certain amount of standard samples according to a detection result accuracy demand, and printing a plurality of color blocks; S3, shooting and frame the to-be-detected samples and the plurality of color blocks in onesame horizontal plane; S4, recognizing the color blocks inthe color the most close to the color data of the to-be-detected samples; and S5, finding out the substance content corresponding to the color blocks from the standard sample color database, and then defining to be the substance content in theto-be-detected sample. With the adoption of the method, the problems that a colourimetric card is used for visually comparing the color in case of little color difference, subjective factors highly influence the result, and the visual color difference comparing capability is limited, can be solved; the detection process is objective; the detecting accuracy is high; the field detection is convenient; the detection cost is low; and the result is accurate and clear.
Owner:UCHEER PURIFICATION & POLLUTION CONTROL TECH ZHEJIANG CO LTD

Underwater stand pipe vortex induced vibration inhibiter adopting rotatable cowling

InactiveCN102071883ASuppression of vortex induced vibrationExpand the scope of useDrilling rodsFluid dynamicsStructural deformationGravitation
The invention discloses an underwater stand pipe vortex induced vibration inhibiter adopting a rotatable cowling, belonging to the technical field of ocean stand pipe facility laying. In the invention, the rotatable cowling capable of changing own direction along with the current flow direction is installed on an underwater stand pipe and comprises a pair of rotating modules, a cowling fixing pad and a cowling. The inhibiter is characterized in that the front part of the cowling is round, the rear part of the cowling is pointed, the surface of the cowling is smooth, and the shape of the cowling is similar to a water drop. The circular arc part of the cowling is coaxial to the stand pipe and is connected with a main pipe by the rotating module which is convenient to install and disassemble to cause the circular arc part to freely rotate around the stand pipe. A small-density buoyant material is added in the hollow part of the cowling, and the structural deformation and pivoting friction resistance brought by the asymmetric gravity of the cowling can be eliminated. Because of effectively inhibiting vortex induced vibration, the underwater stand pipe vortex induced vibration inhibiter can improve the fatigue resistance of the underwater stand pipe, thus greatly lowering the engineering cost. Meanwhile, the inhibiter overcomes limitation on incoming flow directions by various vortex induced vibration inhibiters, and has high application value in the environments with frequently changed flow directions of oceans, rivers and the like.
Owner:SHANGHAI JIAO TONG UNIV

Automatic cleaning device for evaporating pot heat exchange tube

The invention discloses an automatic cleaning device for an evaporating pot heat exchange tube. The automatic cleaning device comprises a center column, a sliding fame driving mechanism, a machine frame portion, a machine frame wheel portion, a machine frame driving portion, a water pipe clamping wheel mechanism and a water pipe conveying mechanism; one end of the machine frame portion is hinged to the center column, the other end of the machine frame portion is connected with the machine frame wheel portion in a positioned mode, and the length of the machine frame portion can be changed by adding a connection machine frame portion; the machine frame driving mechanism is arranged a front machine frame of the machine frame portion and drives the machine frame portion to rotate around the center column, the sliding frame driving mechanism drives the water pipe clamping mechanism to slide on the side face of the machine frame portion, and the heat exchange tube is positioned in a polar coordinate mode; the water pipe conveying mechanism and the water pipe clamping mechanism are combined to achieving conveying and retracting of a water pipe. The automatic cleaning device for the evaporating pot heat exchange tube can achieve automatic cleaning, the length of the machine frame portion can be enlarged according to the size of an evaporating pot, no cleaning dead space exist in a cleaning range, and the phenomenon that machine frame wheels are blocked because of walking on the surface of an irregular evaporating pot can be avoided.
Owner:GUANGXI UNIV

Detection method for identifying material static mechanical property parameters in different areas of solder joints

InactiveCN102313676AStrong engineering use valueExpand the scope of useInvestigating material hardnessJoint sampleNumerical models
A detection method for identifying material static mechanical property parameters in different areas of solder joints comprises the following steps of: (1) preparing a solder joint sample used for a hardness test; (2) selecting a plurality of points in the whole solder joint area along the direction of the solder joint diameter to carry out the hardness test, and regionalizing according to hardness number; (3) carrying out an indentation test in the regionalized areas to obtain a load-depth curve of different test points; (4) establishing a finite element model of the indentation test and verifying; (5) forming optimization mathematical models in different areas of the solder joints according to a simulation result of the finite element method numerical model in the indentation test and acorresponding experimental result; (6) calculating the static mechanical property parameters in different areas of the solder joints by the combination of genetic algorithm. The detection method provided by the invention has a simple principle, is convenient to operate, and can be used to determine local mechanical property parameters of a material with millimeter even micrometer dimensions and expand the application range of the indentation test.
Owner:HUNAN UNIV

Staggered spoke type stretchable tool for friction stir welding and adjusting method of tool

The invention discloses a staggered spoke type stretchable tool for friction stir welding. The staggered spoke type stretchable tool comprises a bearing, a bearing sleeve, a first supporting ring, a second supporting ring, a third supporting ring and a plurality of supporting plates, the bearing is used for connecting the spoke type tool with a cross-shaped operation machine type dislodgement machine, the bearing sleeve is rotationally arranged on the bearing in a sleeving manner, the first supporting ring is annular, an inner ring fixing sleeve is arranged on the bearing sleeve and can rotatealong with the bearing sleeve, the multiple first air cylinder assemblies are arranged on the outer ring of the first supporting ring and distributed on the outer side of the first supporting ring ina circumferential array equal-interval manner, the second supporting ring is annular, is concentric with the first supporting ring and is arranged on the outer side of the first supporting ring, a plurality of round holes are formed in the second supporting ring, air cylinders can penetrate the round holes, the supporting plates are arc-shaped plates, and the first air cylinder assemblies can bedetached to be far away from one end of the third supporting ring. The invention further discloses an adjusting method of the staggered spoke type stretchable tool for friction stir welding.
Owner:LIAONING UNIVERSITY OF TECHNOLOGY

Material picking mechanism of injection molding product feeder

The invention relates to a material picking mechanism of an injection molding product feeder, and particularly relates to a material picking mechanism of an injection molding product feeder. The material picking mechanism of the injection molding product feeder comprises a translation device, a lifting device and material picking devices, wherein the translation device has a horizontal moving function; the lifting device has an up-down lifting function; the material picking devices have a material picking function; the material picking devices are connected by a plurality of material picking tongs through an adjusting connecting plate to form a group and is installed on a linear guide rail; one ends of the material picking tongs which are combined into a group are positioned, and the other ends of the material picking tongs are dragged by a translation air cylinder to perform contraction and stretching motions; the material picking devices can transfer materials automatically under the drive of the translation device and the lifting device. According to the invention, the problem that injection molding products can not be well linked with a follow-up material dividing mechanism after being completely taken out of a mold and temporally stored on a receiving platform is solved, and the products orderly arranged on the feeder can be automatically and efficiently transferred.
Owner:昕迪精密机械(东莞)有限公司

Fabric defect detection method based on optical threshold segmentation

InactiveCN103778624AAccurate thresholdExpand the scope of useImage analysisImage segmentationGradation
The invention discloses a fabric defect detection method based on optical threshold segmentation. The method comprises two parts, i.e., an optimal threshold selection part and an image segmentation part. The optimal threshold selection part specifically comprises the following steps: step 1, randomly selecting a gray value as a segmentation threshold, step 2, according to the threshold, dividing an image into two types, step 3, solving the gray scale total mean value of the gray scale mean value of each type of image and the image, step 4, solving a between-class variance and an inter-class variance of the two types, step 5, calculating a weight, and step 6, calculating an optimal segmentation threshold according to a discrimination formula. The image segmentation part is carried out on the basis of the optimal threshold selection part. The gray value of each pixel point in the image is compared to the optimal threshold, 225 is taken as a gray value which is greater than the threshold, and 0 is taken as a gray value which is smaller than the threshold, such that the image can be divided into a background part and an object part. According to the invention, during segmentation threshold selection, the between-class variance of pixels is considered, an inter-class distance is also introduced, and the weight is employed for reinforcement, so that the calculated threshold is more accurate, the defects of a fabric image can be accurately detected, and the segmentation effect of a complex texture image is improved.
Owner:ZHONGYUAN ENGINEERING COLLEGE

Laser marking method based on CCD navigation positioning

ActiveCN107225882APrecise positioning markingExpand the scope of useAblative recordingCcd cameraMarine navigation
The invention discloses a laser marking method based on CCD navigation positioning. The laser marking method comprises the steps that (1) a CCD camera and an object carrying platform are corrected, and therefore a pixel coordinate of the CCD camera is related to a coordinate system of the object carrying platform; (2) the CCD camera and an oscillating mirror are corrected, and therefore the position of the CCD camera is related to the position of the oscillating mirror; and (3) navigation of a marking sample positioning point and a marking position point is carried out, and a positioning marking information pattern of a marking sample is generated. The CCD camera, the object carrying platform and the oscillating mirror are corrected, and therefore the pixel coordinate of the CCD camera and the coordinate system of the object carrying platform are related, and the CCD camera and the position of the oscillating mirror are related; then navigation of the marking sample positioning point and the marking position point is carried out, the positioning marking information pattern of the marking sample is generated, and therefore the positioning marking information pattern achieves accurate positioning marking under the condition that no sample CAD pattern positioning marking information exist due to the similar sample positioning marking information CAD patterns, and the using scope of an existing CAD pattern machine is improved.
Owner:GUANGDONG ZHENGYE TECH

Grinding method combining mechanical reciprocation and supersonic vibration

InactiveCN101362303AGuaranteed flatness and finishExpand the scope of useSuperfinishing machinesEngineeringMotion direction
The invention relates to a composite grinding method of mechanical reciprocation and ultrasonic vibration. The superposition method of the mechanical reciprocation vibration and the ultrasonic vibration is adopted in the grinding procedure to drive the identical grinding head to grind the surface of a processed work piece, wherein, the mechanical reciprocation vibration and the ultrasonic vibration are superposed according the following motion parameters: the mechanical reciprocation vibration direction and the ultrasonic vibration direction are coaxially superposed, or the mechanical reciprocation vibration direction and the ultrasonic vibration direction are superposed inside the plane parallel to the surface of the processed work piece with an included angle; the frequency of the mechanical reciprocation vibration is 30 Hz to 300 Hz, and the frequency of the ultrasonic vibration is 20 KHz to 50 KHz; the amplitude of the mechanical reciprocation vibration is 0.1 to 10 mm, and the amplitude of the ultrasonic vibration is 0.02 to 0.05 times of the mechanical reciprocation vibration. The grinding method solves the problem that only the polishing of the work piece with a large area can be realized by the existing mechanical reciprocation grinding polishing, and only the polishing of the surface with a small area such as a corner, a slit, a narrow side, a quirk, and a die cavity with complex shape can be realized by the ultrasonic grinding polishing, and the grinding efficiency is low.
Owner:HYPIC SUZHOU

Bidirectional ACDC circuit compatible with three-phase and single-phase alternating current power supply and control method thereof

The invention discloses a bidirectional ACDC circuit compatible with three-phase and single-phase alternating current power supply and a control method thereof. The bidirectional ACDC circuit comprises four wiring terminals, wherein the first wiring terminal, the second wiring terminal and the third wiring terminal are respectively connected to a corresponding power converter first bridge arm middle point, a corresponding power converter second bridge arm middle point and a corresponding power converter third bridge arm middle point through a corresponding first inductor L1, a corresponding second inductor L2 and a corresponding third inductor L3; the fourth wiring terminal is connected to a power converter fourth bridge arm middle point; the four power converter bridge arms are in parallel connection and further are in parallel connection with a bus capacitor C4. The bidirectional ACDC circuit further comprises a first main switch device connected between the first wiring terminal andthe first inductor L1, a second main switch device connected between the second wiring terminal and the second inductor L2 and a third main switch device connected between the third wiring terminal and the third inductor L3. The bidirectional ACDC circuit disclosed by the invention can achieve a single-phase and three-phase alternating current power supply compatibility effect, can effectively expand a circuit use range, has convenience for a user to use and reduces cost.
Owner:XIAN TELD LINCHR NEW ENERGY TECH CO LTD

Totally-closed rigidity adjustable type vibration isolator

ActiveCN102518727AExpand the scope of useGood energy consumptionShock absorbersEngineeringRubber ring
The invention relates to a vibration isolation and buffer device for machine-born equipment, in particular to a totally-closed rigidity adjustable type vibration isolator, which comprises a casing, an installation core shaft, a protective rubber cover, an upper rubber ring, a spherical vibration isolation part and a lower rubber ring. The casing is of a sealed structure, the top of the casing is provided with an installation hole where the installation core shaft is arranged, and the spherical vibration isolation part is arranged in the sealed casing and is connected with the bottom of the installation core shaft together. The upper rubber ring is sleeved at the upper portion of a damp rubber ball, and the lower rubber ring is sleeved at the lower portion of the damp rubber ball which is sealed in the casing. The totally-closed rigidity adjustable type vibration isolator adopts a totally-closed structure to have small environment influence, utilizes a combination structure combining the spherical surface and the cylindrical surface to improve vibration isolation and retarding effects, utilizes the structures of the upper rubber ring and the lower rubber ring to limit the swinging of the head of the installation core shaft and improve using safety, and can be suitable for different frequency ranges by rotating the upper cover to adjust the rigidity of the vibration isolator.
Owner:CHINA AIRPLANT STRENGTH RES INST

Power-assisted manipulator

The invention discloses a power-assisted manipulator and belongs to the field of mechanical engineering. The problems that the carrying speed and strength of manipulators cannot be controlled manually, and workpieces with high mass and different sizes are difficult to dismount and mount are solved. The power-assisted manipulator comprises an arm provided with a first locking part, an adapter partwhich is hinged to the arm through an X-direction hinge shaft so that the arm can rotate around the X-direction hinge shaft, a locking mechanism detachably fixed to the adapter part, a connecting partwhich is hinged to the adapter part through a Z-direction hinge shaft so that the adapter and the arm which are connected fixedly can rotate around the Z-direction hinge shaft simultaneously, and a lifting driving mechanism which is connected with the connecting part and used for driving the connecting part, the adapter part and the arm to move in the Z direction, wherein the arm rotate around the X-direction hinge shaft to attach to the adapter part, the locking mechanism is locked with the first locking part so that the arm and the adapter part can be fixedly connected. The manipulator is simple in structure, convenient to operate and powerful in function, and the effect of carrying weights like light objects is achieved.
Owner:JILIN UNIV
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