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34results about How to "Mark fast" patented technology

Process for positioning spatial position of pipe mouth based on vision

The invention proposes a pipe orifice spatial position positioning method based on vision; the positioning method mainly includes the steps: 1) the robot hand-eye relation is calibrated; the calibration and conversion of a plurality of coordinate systems determine the geometrical mapping relation of the 2D pixel coordinates and the three-dimensional spatial scene; 2) the image of the condenser is obtained; the pipe orifice image point set is segmented and the pipe orifice curve is fitted to extract the center image point of each pipe orifice; 3) the depth information is computed and the actual position of the pipe orifice space is further determined according to the image point of the pipe orifice center and the parameters of K, R and t. when the underwater cleaning robot starts the high-pressure water-spraying gun to wash the pipe orifice, the method is adopted to assist the robot in searching and positioning the position of the pipe orifice, so as to enable the robot to realize the automatic positioning of the pipe orifice and finish the washing operation. The method can greatly improve the accuracy in the pipe orifice positioning for the robot, the automation degree of the robot which replaces humans to work, the operational performance and the environmental adaptability of the robot.
Owner:HUNAN UNIV

Preparation method of DNA functionalized quantum dot based on click chemistry, and application of the DNA functionalized quantum dot in biomarker and detection

The invention discloses a preparation method of DNA functionalized quantum dots based on click chemistry and application of the DNA functionalized quantum dots in biomarker and detection, and relates to the fields of nano materials and biomedical analytical chemistry. According to the preparation method, in the synthesis process of quantum dots, DNA, of which one end is modified by azide or diphenyl cyclooctyne and the other end is modified by thiophosphate, is added to serve as a co-stabilizer of the quantum dots, and therefore, the DNA functionalized quantum dot marking reagent modified by azide or diphenyl cyclooctyne is obtained. The quantum dot marking reagent can be used for efficiently marking protease and cancer cells and can be used for biological detection and imaging analysis. On the basis of a DNA hybridization principle, the marking reagent also has important application values in the aspects of nano material self-assembly and the like. Meanwhile, compared with other fluorescence labeling reagents based on click chemistry, the preparation method of the marking reagent is simple, no chemical modification is needed, purification is easy, and the fluorescence performance of the labeling reagent is excellent.
Owner:WUHAN UNIV

Control system and method for robot for laser marking of vehicle identification numbers

The invention discloses a control system for a robot for laser marking of vehicle identification numbers in the technical field of industrial automation. The control system comprises a coding unit, a series communication module, a data verification module, a file operation module, a data processing module, a database module, a parameter setting module, a driving module, a laser marking machine and a laser lag compensation module. The invention further provides a control method for the robot for laser marking of the vehicle identification numbers. The control method includes the following specific steps that firstly, a graphic file is treated and verified; secondly, file information is stored after verification is correct; thirdly, data treatment is conducted; fourthly, the driving module is used for controlling the laser marking machine; and fifthly, the lag compensation is conducted on the laser marking machine. According to the control method and system for the robot for laser marking of the vehicle identification numbers, the numerical control technology is adopted, the marking speed is high, marking content altering is simple, laser serves as the machining means, the application range is wide, in addition, the action of mechanical force does not exists between workpieces, the original precision of the workpieces is ensured, and the machining manner is flexible.
Owner:WEIFANG UNIV OF SCI & TECH

Mung bean seeding device

The invention discloses a mung bean seeding device. The mung bean seeding device comprises a hopper, a vehicle body, a measuring mechanism and a position metering rod. The hopper is installed at the upper end of the vehicle body, and a wheel groove which communicates with the hopper is arranged in the vehicle body; a seed dropping hole is formed in the bottom of the wheel groove, and a seeding wheel is arranged in the wheel groove; a groove is formed in the side wall of the seeding wheel, and connecting shafts are arranged at two ends of the seeding wheel; the connecting shafts are rotatably connected with the side walls of the wheel groove, and the outer side wall of the vehicle body is connected with a push rod; an end of the push rod is provided with a holding rod, and one side of the holding rod is provided with a seeding rod; the seeding rod is connected with a pull rod, and one end of the pull rod is connected with the seeding rod; a rack plate is arranged at the other end of thepull rod, and a gear meshed with the rack plate is arranged on each connecting shaft; wheels are arranged on two sides of the vehicle body and connected with the vehicle body through wheel axles; andthe measuring mechanism is arranged at the front end of the vehicle body, and the position metering rod is arranged on the measuring mechanism.
Owner:SHANDONG CROP GERMPLASM CENT

Process for positioning spatial position of pipe mouth based on vision

The invention proposes a pipe orifice spatial position positioning method based on vision; the positioning method mainly includes the steps: 1) the robot hand-eye relation is calibrated; the calibration and conversion of a plurality of coordinate systems determine the geometrical mapping relation of the 2D pixel coordinates and the three-dimensional spatial scene; 2) the image of the condenser isobtained; the pipe orifice image point set is segmented and the pipe orifice curve is fitted to extract the center image point of each pipe orifice; 3) the depth information is computed and the actual position of the pipe orifice space is further determined according to the image point of the pipe orifice center and the parameters of K, R and t. when the underwater cleaning robot starts the high-pressure water-spraying gun to wash the pipe orifice, the method is adopted to assist the robot in searching and positioning the position of the pipe orifice, so as to enable the robot to realize the automatic positioning of the pipe orifice and finish the washing operation. The method can greatly improve the accuracy in the pipe orifice positioning for the robot, the automation degree of the robot which replaces humans to work, the operational performance and the environmental adaptability of the robot.
Owner:HUNAN UNIV

A preparation method of DNA functionalized quantum dots based on click chemistry and its application in biomarkers and detection

The invention discloses a preparation method of DNA functionalized quantum dots based on click chemistry and application of the DNA functionalized quantum dots in biomarker and detection, and relates to the fields of nano materials and biomedical analytical chemistry. According to the preparation method, in the synthesis process of quantum dots, DNA, of which one end is modified by azide or diphenyl cyclooctyne and the other end is modified by thiophosphate, is added to serve as a co-stabilizer of the quantum dots, and therefore, the DNA functionalized quantum dot marking reagent modified by azide or diphenyl cyclooctyne is obtained. The quantum dot marking reagent can be used for efficiently marking protease and cancer cells and can be used for biological detection and imaging analysis. On the basis of a DNA hybridization principle, the marking reagent also has important application values in the aspects of nano material self-assembly and the like. Meanwhile, compared with other fluorescence labeling reagents based on click chemistry, the preparation method of the marking reagent is simple, no chemical modification is needed, purification is easy, and the fluorescence performance of the labeling reagent is excellent.
Owner:WUHAN UNIV
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