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301 results about "Material volume" patented technology

Large-scale piled material volume two-side parallel measuring device and method

The invention relates to a large-scale piled material volume two-side parallel measuring device and method. In the method, a laser scanner and a laser distance measuring sensor are adopted to cooperate with each other to synchronously collect material pile contour information. The laser scanner is installed on a trolley capable of conducting stable and uniform motion. In the moving process, the laser scanner constantly scans the material pile contour information, the laser distance measuring sensor collects motion displacement of the laser scanner, and two groups of synchronous information forms three-dimensional contour information of a material pile. The trolley moves on a specific track, so that stable motion is achieved. The measuring device is specifically arranged in the mode that two sets of measuring equipment are installed on the two sides of the material pile in parallel respectively so that the material pile contour information can be completely scanned. The collected material pile contour information is transmitted to a PC, the appearance and the volume of the material pile are reconstructed in an integral reconstruction mode, and consequently the volume measurement of large-scale piled materials are achieved. In addition, data obtained through measurement are received by an administrator so that the administrator can make corresponding decisions timely; therefore, the large-scale piled material volume two-side parallel measuring device and method provide a technical support for an enterprise to manage the large-scale piled materials.
Owner:SHANGHAI UNIV

Automation storage yard laser measurement device and application method thereof

ActiveCN102425991ASolving Dynamic Interconnection ProblemsSolve the problem of three-dimensional coordinate settlementUsing optical meansData switching networksWireless controlMeasurement device
The invention relates to an automation storage yard laser measurement device and an application method thereof. In the invention, data acquisition can be realized by using a synchronous control collector which controls a plurality of sensors, a high speed laser scanner, a horizontal displacement sensor, a horizontal rotation sensor, a vertical displacement sensor and a video sensor. The collected data is preliminarily processed by a controller. The completely ineffective data is filtered. And after GPS module time service marking is used, the data is transmitted to a background server through an integrated 3G wireless communication module. Through upper computer software, a three dimensional coordinate calculation algorithm is used to calculate a three dimensional coordinate. A three dimensional modeling algorithm is used to carry out modeling. And then a material volume to be measured can be calculated. For a problem that working time sequences of the sensors are inconsistent, an annular buffer area technology is used to realize asynchronous data acquisition and storage. A dynamic interconnection problem of the 3G router equipment can be solved. A feasible scheme is provided for remote wireless control and implementation costs can be saved.
Owner:WUHAN WUDA ZOYON SCI & TECH

Three-dimensional printer and printing method and three-dimensional printing head

The invention relates to a three-dimensional printer, a three-dimensional printing head and a printing method. The three-dimensional printing head comprises a material volume cavity, wherein a screw rod is arranged in the material volume cavity, a motor is connected with the screw rod, a material supply device is communicated with the material volume cavity, a printing nozzle is arranged on the end part of the material volume cavity, a heater is arranged on the material volume cavity and positioned between the material supply device and the printing nozzle, and a supercritical fluid supply system is communicated with the material volume cavity. A molten printing material is mixed with supercritical fluid to generate a single-phase molten mixture under the mixing and stirring effect of the screw rod, and a uniform microporous bubble formation effect is formed, so that the density value of a printing object can be reduced, the size deviation of the three-dimensional printing object can be alleviated, the flatness and straightness of the three-dimensional printing object can be improved by more than 50 percent, the temperature for printing the molten printing material is effectively lowered, the energy is saved, and the operation personnel is prevented from being scalded.
Owner:PRINT RITE UNICORN IMAGE PROD CO LTD

Civil engineering material volume change test instrument and test method

The invention relates to a civil engineering material volume change test instrument and a test method, in particular to a material volume change test device and test method in civil engineering. According to the test instrument, a sealing rubber ring is arranged in an annular groove, a base is covered with an upper cover, an air intake and exhaust hole is formed in the top end of the upper cover, one end of a probe thermometer is arranged in the upper cover, the other end of the probe thermometer is arranged outside the upper cover, a plastic pipe is arranged on the upper end face of the upper cover and communicated with a cavity, and a graduated glass pipe is communicated with the plastic pipe. The test method comprises the steps that first, a civil engineering material test piece is prepared; second, the volume of the civil engineering test piece before a test is calculated; third, the civil engineering test piece is installed; fourth, liquid is injected into the cavity; fifth, the temperature of the civil engineering test piece is measured in an initial temperature environment; sixth, the temperature of the civil engineering test piece is measured in a measuring temperature environment; seventh, the initial temperature and the measuring temperature of the test piece are measured, and the number of division of the test piece is calibrated; eighth, the volume variation theta Vt of the civil engineering test piece is calculated; ninth, the volume expansion coefficient lambda of the civil engineering test piece is calculated. The civil engineering material volume change test instrument and the test method are used for measuring the volume change situation of the civil engineering material.
Owner:HARBIN INST OF TECH

Device and method for measuring deep dielectric charging characteristic parameter of spacecraft dielectric material

The invention provides a device and a method for measuring deep dielectric charging characteristic parameter of a spacecraft dielectric material. The device comprises a radiation source, a vacuum unit, a sample target table, a control unit, an electrostatic potentiometer, an electrometer, a total conductivity acquisition unit, a potential attenuation measurement unit, a first processing unit and a second processing unit, wherein the electrostatic potentiometer is used for measuring the surface potential of a sample medium under certain flux; the electrometer is used for measuring the leakage current of the sample under certain flux; the total conductivity acquisition unit is used for acquiring the total conductivity based on the measured surface potential and the leakage current; the first processing unit is used for obtaining dark conductivity values under all fluxes based on the obtained potential attenuation curve along with the passage of time and a charge storage attenuation method, and taking an average to obtain the dark conductivity Sigma O; the second processing unit is used for obtaining radiation induction conductivity corresponding to the dosage rate generated in material volume under two different kinds of beam intensity based on the obtained dark conductivity and the total conductivity, so as to obtain the related parameters Kp and the dimensionless exponent delta value of the sample material.
Owner:NAT SPACE SCI CENT CAS

Cucumber seedling-raising substrate and preparation method thereof

The invention discloses a cucumber seedling-raising substrate and a preparation method thereof. The cucumber seedling-raising substrate comprises a substrate main ingredient and substrate auxiliaries; the volume ratio of the substrate main ingredient to the substrate auxiliaries is (60-70): (30-40). The substrate main ingredient is a thoroughly decomposed material prepared through mixed fermentation of saw dust such as cottonseed mud and word flour such as fruit tree branches, and the auxiliaries include vermiculite and pearlite. The preparation method comprises the following steps: firstly, mixing the cottonseed mud with the saw dust; next, adding zymocyte for fermentation; and after fermentation, adding the auxiliaries and mixing, screening and packaging. The cucumber seedling-raising substrate has the fermented material volume-weight of 0.40-4.5/cm3, the total porosity of 80-90%, the EC of 3.5-4.0ms/cm, the pH of 6.5-7.0, the total available nitrogen phosphorus and potassium content of 4.5-5.0% and the organic matter content of 40-45%. The cucumber seedling-raising substrate does not need to be added with grass carbon, and is loose and air-permeable, capable of retaining water and fertilizer, harmonious in water, fertilizer and air, and capable of promoting seedlings to grow robustly.
Owner:INST OF GARDENING ANHUI ACADEMY OF AGRI SCI

Robot stacking system and stacking method thereof

The invention provides a robot stacking system which comprises a conveying mechanism, a first blocking mechanism, a first detecting device, a first 3D camera, a second detecting device, a second 3D camera, a control device and a stacking robot. The conveying mechanism is provided with a main conveying area and a temporary storing conveying area. The first blocking mechanism comprises a first blocking part and a first blocking part drive mechanism. The first blocking part is arranged between the main conveying area and the temporary storing conveying area. The first detecting device is used fordetecting whether materials reach the edge position of the main conveying area. The first 3D camera is used for shooting material images of the main conveying area and obtaining material size information. The second detecting device is used for detecting whether the materials reach the preset position of the temporary storing conveying area. The second 3D camera is used for shooting material images of the temporary storing conveying area to determine the material grabbing point position. The control device is used for determining the tray placing point position of the materials according to the size information of the materials. The stacking robot is used for stacking the materials on trays according to the grabbing point of the materials and the tray placing point position. The inventionfurther discloses a stacking method of the robot stacking system. The robot stacking system can stack the materials of different sizes.
Owner:上海新时达机器人有限公司

Preparation method for synthesizing graphite particle negative electrode material

The invention belongs to the fields of material synthesis and energy utilization and in particular relates to a preparation method for synthesizing a graphite particle negative electrode material of a lithium ion battery. The method comprises the following steps: crushing, grading and screening an anisotropic graphite raw material to obtain superfine graphite powder with the average particle size of 2-10 microns, and performing secondary granulation technology treatment, namely kneading, molding, carbonizing, graphitizing, crushing, grading, spheroidizing and screening, so that the isotropy of the graphite particles and the end face/base surface ratio of the graphite particles are improved, and the volume expansion and shrinkage effect of the material in the lithium embedding and removal process and the high-current charge and charge performance of the material are improved. The preparation process is safe and controllable, the prepared material is high in isotropy degree, the material volume change in the lithium embedding and removal process is small, the cycle performance can be obviously improved, the end-face ratio of the graphite particles is improved due to secondary granulation treatment, and the material has good high-current charge and charge performance.
Owner:XINXIANG SAIRI NEW ENERGY SCI & TECH

Method for generating random structure of continuous fiber composite material and predicting elastic performance of continuous fiber composite material

The invention provides a method for generating a random structure of a continuous fiber composite material and predicting the elastic performance of the continuous fiber composite material. The method comprises the following steps: generating a fiber model by a particle swarm algorithm, and optimizing the fiber model according to fiber jumping treatment to obtain particle space random distribution information for generating a three-phase RVE finite element model; and performing finite element simulation operation on the three-phase RVE finite element model to obtain a prediction result. Based on a representative volume element generation strategy of the particle swarm algorithm, the distance among fibers is controlled by the particle swarm algorithm in the process of generating the representative volume element, the requirement for the material volume percentage is fulfilled while fiber random distribution is ensured; and based on efficient generation of the representative volume unit and a homogenization theory, an elasticity prediction finite element model is established, a periodic boundary condition is applied, and the elasticity performance prediction result of the material can be obtained by microscomic finite element simulation, so that the efficiency of elasticity performance prediction is improved.
Owner:SHANGHAI JIAO TONG UNIV
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