217results about How to "Convenient and accurate fixation" patented technology

The invention relates to a mixed measurement analysis method for a satellite antenna. The method effectively solves the problems that various measurement devices are used for co-measurement to reduce detection difficulty and improve detection efficiency during a measurement process of the satellite antenna. The method comprises the steps: cubic mirror collimating measurement is carried out by electronic theodolites during antenna installation and detection processes, scanning measurement of an antenna shaped surface is carried out by a laser radar, a space point position is measured by a laser tracker, and thus the measurement of the satellite antenna is jointly completed by the various measurement devices; union calibration algorithm of 'six freedom degree measurement station three-dimensional network' is employed, a conversion relationship between measurement station coordinates and measurement coordinates is utilized, various observed value error equations are directly listed, so as to overcome shortcomings of a traditional algorithm and improve adaptability of the algorithm. The method provided by the invention is simple, is easy to operate, enables an initial value to be fast acquired, has low requirements for precise degree of the initial value, has a few iteration times, is quick in convergence speed, theoretically is an optimal solution, and has strong algorithm adaptability, high measuring efficiency, fast speed and high precision.

The invention discloses a building cooling load prediction method and a device of an air conditioning refrigerator. The method comprises the steps of: acquiring meteorological parameters in multiple positions out of a building, and calculating heat out of the building; counting heat parameters in the building, and calculating heat in the building; building a building physical model according to the heat out of the building and the heat in the building; and acquiring operation data of an air conditioning refrigerator system in a preset time, training the building physical model according to a genetic algorithm, building an ash bin model, and predicting a building cooling load. The method has the beneficial effects of fastness, high accuracy, organic integration of prediction and feedback optimal control, capability of realizing precise and accurate control of a central air conditioning system and realization of effective energy saving effect.

The technical scheme of the invention provides a method for measuring temperature-controllable four-probe square resistance and resistivity. The method comprises the steps of completing circuit connection of a temperature-controllable four-probe square resistance measurement system, connecting power to a master unit and preheating for 5 to 10 minutes; selecting a proper current range on the panel of the master unit according to requirement, and selecting resistivity or square resistance of a to-be-measured sample; placing the to-be-measured sample in the base of a four-probe test platform; connecting a thermocouple with a temperature test instrument to make the thermocouple keep contact with the surface of the to-be-measured sample, and pressing down four probes; starting an electric furnace wire heating device, adjusting the heating rate, and measuring temperature of the sample by the thermocouple and the temperature test instrument; querying a parameter C and inputting the value of parameter C; continuously observing the temperature test instrument after completing the adjustment; and recording data, which is the resistivity or square resistance of the sample at the temperature, in a display when temperature meets the requirement.

The invention provides a method for tracking and solving a Thevenin equivalent parameter in a transient process of a power system. The method solves the system Thevenin equivalent parameter on an arbitrary load bus by a compensation method by using a network algebraic equation generated in each calculation step of a transient stability operation program. The method has good operability and applicability without any assumption premise, and has high precision of the Thevenin equivalent parameter which is obtained by calculation. The result of the method can be applied to any analysis and calculation of the power system which is required to form a Thevenin equivalent system.

A light source color calculation and image correction method is provided, which relates to a calculation and correction method of a light source during the identification and analysis of color images. The method comprises the following steps: normalizing the colority of each pixel in a color image; rapidly extracting a highlight area by a voting method based on the change gradient of pixels by using pure diffuse reflection or less mirror reflection with respect to the surrounding pixels, that is, the property of large similarity degree of the pixels; deducing the linear relationship between inverse intensity and colority and the representation and correction method of the light source color based on a simplified bidirectional reflectance function illumination model, so as to respectively project the colority values of the three channels of the pixels in the highlight area to spaces defined by the inverse intensity and the colority and thus to transform a three-dimensional space into a two-dimensional space; linearly matching the points in the inverse intensity space by means of parameter approximation to obtain a colority axis intercept (that is light source color value); and performing the color correction on the normalized image based on the light source color value and then reverting to an image under standard white light conditions.

The invention discloses an aircraft model ice shape contour extraction method based on machine vision, The method can recognize the ice contour collected from the icing test of the aircraft model in the icing wind tunnel. The experiment proves that the method has high robustness. The ice contour recognition and curve extraction are realized on 1000 ice contour images, and the digital result of icecontour curve is obtained. The digitized results of ice shape curves are not only helpful to analyze the geometric characteristics of ice shapes produced under different cloud and fog conditions in two-dimensional wind tunnels, but also of great significance to the further study of aircraft icing flight, ice protection and ice airworthiness evidence.

The invention discloses a method for estimating an equivalent quality factor and a method for estimating a stratum quality factor by using the method for estimating the equivalent quality factor. A binary algorithm-based center-of-mass frequency shift quality factor value Q estimating method is provided on the basis of an attenuation formula of a quality factor value Q and the definition of a center-of-mass frequency and on the basis of determining the changing monotonicity of the center-of-mass frequency along with the quality factor value Q. According to the method for estimating the equivalent quality factor and the method for estimating the stratum quality factor according to the method for estimating the equivalent quality factor, the assumption that the seismic source frequency spectrum in the calculation of the quality factor value Q is a Gaussian spectrum in the conventional center-of-mass frequency shift method can be eliminated; the application range of the center-of-mass frequency shift method is expanded; the calculation precision of the quality factor value Q is improved.

The invention discloses a device and a method for collecting storage tank discharged gas. The device comprises more than one storage tanks A for storing a medium A, and more than one storage tanks B for storing a medium B; breather valves, emergent release valves, pressure transducers and cutting valves are respectively arranged at the tops of the storage tanks; the cutting valves of the storage tanks A are communicated with storage tank A gas phase pipes through storage tank A pipe fire stoppers; the other ends of the storage tank A gas phase pipes are respectively connected with one end of a storage tank A gas phase gathering pipe; the cutting valves of the storage tanks B are communicated with storage tank B gas phase pipes through storage tank B pipe fire stoppers; the other ends of all the storage tank B gas phase pipes are respectively connected with one end of a storage tank B gas phase gathering pipe; the other end of the storage tank A gas phase gathering pipe and the other end of the storage tank B gas phase gathering pipe are respectively connected with one end of a storage tank gas phase gathering pipe main pipe; and the other end of the storage tank gas phase gathering pipe main pipe is connected with a dirty oil collecting system. The device can reduce the loss caused by direct discharge of oil into the atmosphere, and reduces the probability of generating potential safety hazards by feeding a lot of air into the tanks.

The invention discloses a non-linear amplitude phase detection method suitable for a single-phase distortion power grid, and the method comprises the steps: extracting a fundamental wave signal of a single-phase signal through employing a stationary coordinate system phase locking ring method according to a mode of the single-phase distortion power grid, and building an orthogonal signal; building a liapunov function according to the fundamental wave signal of the single-phase signal and the orthogonal signal, and obtaining an adaptive orthogonal generator and a frequency locking ring because the differential coefficient of the liapunov function is less than zero, i.e., system global stability and convergence; and the fundamental wave amplitude and phase of the single-phase signal are obtained according to the adaptive orthogonal generator and the frequency locking ring. The method is designed according to the mode of the single-phase distortion power grid, achieves the estimation of a diagonal frequency signal through employing a liapunov method, does not depend on a conventional linearization method, and guarantees the signal integrity through employing a non-linear method.

The invention belongs to the field of rapid screening method for methamidophos in vegetables. The method comprises steps of: crushing a vegetable sample, mixing and oscillating with a polar solvent, and carrying out pumping filtration to obtain a filtrate; concentrating to dry, carrying out a constant volume with ultrapure water, and filtering with a 0.045 mum membrane; preparing a nano silver solution by a citrate reduction method; mixing the vegetable extract and the nano silver solution, adjusting a pH to 1.0-5.0, and detecting methamidophos in the sample by a Raman spectrometer; selecting a Raman spectrometer with 785 nm laser wavelength, setting a laser power to 50-300 mw, a scan time of 2-20s, mixing the methamidophos ultrapure water solution and the prepared nano silver solution in a certain ration, and carrying out a laser scan detection; and drafting a standard curve with a methamidophos concentration as an abscissa and a characteristic peak height as an ordinate, so as to analyze methamidophos content in the sample. The invention provides a low detection limit and simply operated Raman detection method, which can rapidly and accurately carry out qualitative and quantitative detection of methamidophos in the vegetable sample and can be used for on-site large scale sample rapid screening.

The embodiment of the invention provides a natural language information data processing method and device. The natural language information data processing method includes: acquiring a first corpus and a second corpus; generating natural language information according to the second corpus; determining a second characteristic word in the natural language information; extracting a first characteristic word from the first corpus; and using the first characteristic word to replace the second characteristic word meeting a preset rule. According to the embodiment of the invention, more reasonable and effective first characteristic words can be provided through determination of the rationality of the replaced natural language information, and the second characteristic word is replaced; the natural language information can achieve reasonable matching and fluent statements; overfitting phenomenon can be accurately and reasonably eliminated in a generation process of a natural language; high quality natural language information can be generated; the matching rationality and the statement fluency of the generated natural language information can be ensured; and the statement creativity of the natural language information can be improved.

The invention discloses an automatic positioning method for a tunneling drill wagon and is suitable for positioning of a drill rod when the mine tunneling drill wagon drills. The automatic positioning method includes: arranging six degrees of freedom and eight key points on a drill arm according to the drill wagon, and building a three-dimensional-space global coordinate system of a roadway and a three-dimensional-space local coordinate system taking a hinging point of the drill arm and a shaft sleeve of a machine body as a local coordinate original point; enabling the drill wagon to be in a Z-axis direction of the global coordinate system, determining a drilling position on a roadway tunneling work face, using an iterative search method and a gradual return method to solve parameter values of the six degrees of freedom of the drill arm, calculating spatial coordinate values of the eight key points, determining final posture of the drill arm, and aligning the drill rod to the drilling position for drilling. The automatic positioning method is quick and accurate in calculation and completely suitable for automatic positioning of the drill wagon for drilling.

The invention discloses an attached type self-lifting derrick, relates to the technical field of special equipment for power transmission line construction and is used for reducing the safety risk when a power transmission line tower is assembled and constructed in a mountainous area. The attached type self-lifting derrick comprises a derrick body, wherein a self-lifting device for lifting the derrick body is arranged at the bottom of the derrick body, and a hoisting device for hoisting tower material components of the power transmission line tower is arranged at the top of the derrick body; the attached type self-lifting derrick further comprises at least one guide device for guiding lifting of the derrick body, the guide device comprises a mounting part and a positioning guide part fixedly connected with the mounting part, and the mounting part can be fixedly connected with the power transmission line tower; the positioning guide part comprises a positioning frame fixedly connected with the mounting part, and multiple groups of guide pulleys for guiding lifting of the derrick body are arranged on the positioning frame. The attached type self-lifting derrick is used for assembling and constructing the power transmission line tower.

The invention discloses a directional guiding and branching mechanism for end-closed pipe fittings, and belongs to the field of mechanical equipment for processing and transmission of workpieces. A pushing plate sleeve is arranged on and vertically communicates with the lower side of a pipe storing hopper, a lifting pushing plate slides in the vertical direction and is arranged on the pushing plate sleeve, a feeding guiding pipe is fixedly arranged on a guiding pipe bracket besides the pipe storing hopper, branch guiding pipes are arranged on the two sides of the lower end of the feeding guiding pipe in a symmetrical and communicating mode, a rotating guiding plate is rotatably arranged at the end of the lower side of the feeding guiding pipe, a fixed bearing plate is horizontally and fixedly arranged on the guiding pipe bracket on the lower sides of the two branch guiding pipes, pipe transmitting brackets are horizontally and fixedly arranged on the two sides of the upper part of thefixed bearing plate, and pipe transmitting belts are horizontally arranged on the upper sides of the pipe transmitting brackets. The directional guiding and branching mechanism is reasonable in structural design, the pipe fittings can be conveniently and efficiently arrayed and guided one-by-one in a directional mode, the pipe fittings can be stably, smoothly and evenly branched, fed and transferred in a division mode, the automation degree of pipe fitting transferring and processing are improved, and the needs of processing and using are met.

The invention provides a medium conveyer which can rapidly and accurately detect the length of a medium in a conveying direction so as to avoid the situation of inability to conveying the medium. After a medium (P) is absorbed into a convey channel (2), the inclined angle (alpha) of the medium (P) can be obtained by avertence detection sensors (18, 19), and the length in the convey direction (LB) can be calculated based on the detection signals of the avertence detection sensors (18 or 19) and the detection signals of a medium detection sensor (30). The length in the convey direction (LB) is compared with the distance (Lp) between feeding rollers (7a, 7b) and feeding rollers (11a, 11b), so as to determine whether the medium (P) can be absorbed in or not under the condition when the feeding rollers (7a, 7b) tightly clamp the medium (P), thereby preventing the situation that the medium (P) absorbed in can not be conveyed due to the length of the medium is shorter than the distance (Lp) between rollers.

The invention provides a real-time audio calibration method. A real-time audio calibration program is performed on a third-generation (3G) handheld mobile device by utilizing an electronic device and a testing instrument. In the whole process of the audio calibration program, audio parameters are written into a memory by utilizing a central microprocessor, and are directly read by an audio processor to perform an audio test, so that the testing instrument and the 3G handheld mobile device are connected without being restarted and re-executing communication to further increase the speed of the audio calibration program.

The invention discloses a PCR (polymerase chain reaction) product melting point analysis method for quantitatively detecting species composition of a mixed-type sample. The method comprises the following steps: carrying out primer design by using genes with moderate evolutionary rate of each species in the mixed sample; optimizing multiplex PCR conditions according to single PCR of the corresponding template and primers; carrying out amplification on different sample DNAs (deoxyribonucleic acids) with known component content under the optimized conditions; determining the melting curve of the multiplex PCR product to obtain the melting peak-to-peak height value of the corresponding component, and drawing a standard curve according to the peak height ratio and corresponding sample component content ratio; and for the sample with unknown component content ratio, carrying out amplification and melting curve determination under the same conditions to obtain the peak height ratio, and calculating the corresponding component content ratio according to the standard curve. The method is simple and quick, is low in cost, does not need to detect all the templates to be detected on the basis of the high-quality standard curve, and implements quantitative analysis on the species or components in the mixed-type sample.

The invention relates to a method for identifying polyamide 6 or polyamide 66 in blended textiles. The method comprises the following steps: (1) a polyamide 6 or polyamide 66 pure product is taken and a formic acid solution is added for dissolving, filtering is carried out, a solution is taken and placed in a sample cup, or a polyamide 6 or polyamide 66 pure product is directly taken and placed in a sample cup, a pyrolysis gas chromatography-mass spectrometry method is used for carrying out analysis, and a program and a mass spectrogram of a standard sample are obtained; (2) a blended textile sample to be measured is taken, a formic acid solution is added for carrying out immersion treatment, a polyamide component in the sample to be measured is dissolved, filtering is carried out, filtrate of the sample to be measured is placed in a sample cup, the pyrolysis gas chromatography-mass spectrometry method is used for carrying out analysis, and a program and a mass spectrogram of the sample to be measured are obtained; (3) compared with the standard sample, and according to characteristic pyrolysis substances and retention time of the sample to be measured as well as peak area and relative content thereof, identification and analysis of components are carried out. The method has the advantages of simple, sensitive and reliable operation, few reagent and sample amounts, and little influences on body health of test personnel and surrounding environment.

The invention discloses a measurement method of amount of fill and amount of excavation of engineering of an unmanned aerial vehicle. The measurement method comprises the following steps: laying photo-control points in a to-be-measured region at the beginning of each month, mapping and recording the existing landform, establishing an initial three-dimensional model of a real scene according to themapped landform and geological exploration document, classifying various monomers in the to-be-measured region according to located slopes, and acquiring aerial image data by using an unmanned aerialvehicle at the end of the month according to the laid photo-control points; performing data measurement and collection on pit sidewall points at different elevations by using the unmanned aerial vehicle; firstly selecting one elevation plane in the collection, and then accomplishing plane coordinate collection work of pit sidewall points on the elevation plane; gradually accomplishing the plane coordinate collection of the pit sidewall points on various elevation planes by using same method, processing the acquired image data and the photo-control data to obtain a new three-dimensional model;performing superposition on the initial three-dimensional model and the finished three-dimensional model, and performing space difference computation at a corresponding location.

The invention belongs to the power attachment facility field and relates to an installation tool of a pole bird-preventing device. The installation tool is characterized in that the installation tool includes a clamping device, an adjusting device and a fixing device; the clamping device includes a clamping rod and an adjusting rod; one side of the upper end of the adjusting rod is provided with a flange; a spring stopping block, a gear and a flange bearing are arranged in the clamping rod; the gear is provided with a zipper; a spring and a pull bar are arranged in a telescopic rod; the exterior of the telescopic rod is provided with a driving arm; the clamping rod is provided with a driven arm; the adjusting rod is provided with a pulley and a screw connected with the pull bar; the adjusting device comprises an adjusting plate; the adjusting plate is provided with a floating frame, a upper fixed pulley and a lower fixed pulley; one side of the floating frame is provided with a pressure spring and a cam; the floating frame is provided with a driving wheel; the fixing device comprises an adjusting shaft, a gear box and a mounting frame; a gear and a rack which are engaged with each other are arranged in the gear box; and the mounting frame is provided with a binding belt. The installation tool of the invention enables live-line working and can be operated by just one construction person. The installation tool can be suitable for the installation of a variety of line towers and can be conveniently popularized.

The invention discloses a mechanical arm sample injection module. The mechanical arm sample injection module comprises a first sampling device provided with a sampling needle assembly and a second sampling device provided with a pipette tip assembly, the first sampling device is used for sucking a reaction reagent into the reaction cup; the second sampling device is used for sucking a sample intothe reaction cup; the mechanical arm sample injection module further comprises a transverse movement assembly, a longitudinal movement assembly and an up-down movement assembly. The transverse movement assembly drives the first sampling device and the second sampling device to move transversely, the longitudinal movement assembly drives the first sampling device and the second sampling device to move longitudinally, and the up-down movement assembly drives the first sampling device and the second sampling device to move up and down. The mechanical arm sample injection module can enable the first sampling device and the second sampling device to transversely move, vertically move and longitudinally move, namely move in three directions to flexibly control sampling, so a reaction reagent anda sample are added into a specified reaction cup, and accurate and rapid sampling is realized.

The invention relates to a device for automobile H point auxiliary measurement. The device comprises a positioning member and a first pointer. The positioning member comprises a body and at least a supporting portion which is disposed on the body and is matched with a saucer shape on an automobile auxiliary dashboard so that the supporting portion can be inserted into the saucer. The first pointer is disposed detachably on a side of the body, and through a position of a pointer head, the first pointer can mark the design position of an X coordinate and a Z coordinate of the H point of an automobile front row seat in a reference space rectangular coordinate system, a design reference point on the automobile being an origin of the coordinate system, and a direction of longitudinal automobile body, horizontal automobile body and a direction that is perpendicular to a direction of a automobile bottom height are respectively the directions of an X axis, a Y axis, and a Z axis. The invention also relates to a method for marking the design position of the automobile H point. The device and the method are advantaged by reasonable design, accurate positioning, flexible disassembly and assembly, convenient use, etc. With the device and the method, the H point design positions of the front row and a rear row of the automobile can be easily, rapidly and accurately marked, and the device and the method can effectively overcome shortcomings in respect of determining the automobile H point design position in prior art.

The invention discloses a rapid hand-eye calibration device based on a standard ball binocular robot. The device comprises a base and a binocular camera. The base is provided with a robot body througha mechanical arm, the robot body is connected with a flange through a transmission device, the flange is connected with a clamp, and a standard ball is clamped at the tail end of the clamp. The binocular camera, the mechanical arm and the robot body are all connected with a demonstrator of the robot. The invention also discloses a corresponding calibration method, which comprises the following steps of: 1, positioning the standard ball; 2, obtaining a closed solution of a rotation matrix and a translation matrix of hand-eye calibration; and 3, according to an Adam optimization algorithm, calculating a relative position relationship between a robot coordinate system and a camera coordinate system through optimization iterative operation to serve as a hand-eye calibration result. The deviceis low in cost and convenient to install, three non-coplanar standard ball straight line tracks are obtained through straight line fitting, the calibration equation AX = XB is converted into AX = b,the Adam iterative optimization is used to rapidly and accurately obtain the hand-eye calibration result, and the result is more stable and more accurate.