247results about How to "Get fast" patented technology

The invention provides a visual 3D taking and placing method and system based on a cooperative robot. The method comprises the steps that internal and external parameters of a camera of a binocular structured light three-dimensional scanner are calibrated; the hands and eyes of the cooperative robot are calibrated, and a calibration result matrix is obtained; a three-dimensional digital model of to-be-taken-and-placed target objects is collected; the calibrated binocular structured light three-dimensional scanner is adopted to obtain point cloud data of the to-be-taken-and-placed target objects which are stacked in a scattered mode, and the point cloud is segmented to obtain scene point clouds of the multiple to-be-taken-and-placed target objects; the to-be-taken-and-placed target object with the highest grabbing success rate is selected as a grabbing target according to the scene point clouds of the multiple to-be-taken-and-placed target objects; the three-dimensional digital model ofthe grabbing target and scene point pair features are registered, pre-defined taking and placing pose points are registered into a scene, and a registered pose estimation result is obtained and serves as a grabbing pose of the grabbing target; and a preliminary grabbing path track of the cooperative robot is planned. The target object can be accurately recognized, and the grabbing positioning precision is high.

Disclosed is a method for super-male fish to mate physiological spawner to build super-male yellow catfish breeding groups, belonging to the fish physiological genetics; the method belongs to the technical field of controlling the sex of fish through artificial sex reversal, screening, test cross and group expanding. The technical problem to be solved is that issues are the super-male fish mates the sex-reversed physiological spawner; the gynogenesis process is eliminated; through the mating between the sex-reversed physiological spawner and the super-male fish or male fish, and the combination of the sex ratio analysis and the test cross technology, the breeding time is shortened. The invention adopts the following technical proposal: artificial spawning inducement and fertilization; sex reversal, namely, the male fish is sex-reversed into physiological spawner; test cross sex reversal, namely, the physiological spawner and the super-male or ordinary male fish are test-crossed, and the physiological spawner and the super-male fish are selected, and the test cross sex reversal comprises the artificial spawning inducement and fertilization; sex ratio analysis, namely, the sex of the candidate fish is confirmed; offspring determination, screening and identification; group expanding, that is, the breeding groups of the super-male fish and the super-female physiological spawner are expanded; and the breeding production of all-male fish, namely, ordinary spawner mates the super-male fish to produce the all-male fish. The method is used for the breeding and mass production of super-male yellow catfish breeding groups.

The invention relates to a gain adjustment processing-based fingerprint imaging method and overcomes the deficiencies in the prior art. According to the technical scheme, the method comprises the following steps of 1: performing initialization operation when a fingerprint identification apparatus is re-started each time, and performing original vacant image acquisition by the fingerprint identification apparatus under the vacant condition; 2: performing background noise calculation according to the original vacant image; 3: acquiring an original fingerprint image; 4: performing preliminary judgment according to the original fingerprint image, and if the original fingerprint image meets the requirement of a set threshold, judging whether gain adjustment is performed or not, or otherwise, performing the step 3 again; 5: removing background noises in the original fingerprint image according to a background noise calculation result; 6: performing overall gain adjustment on the denoised image; and 7: obtaining the adjusted image, ending the process, and skipping to and performing the step 3 during next fingerprint identification.

The invention relates to a fisheye lens image distortion correction method based on an orthogonal projection, which comprises the following steps: 1) using a fisheye camera to take a picture, that is,a fisheye image; 2) performing distortion correction on the fisheye image: obtaining the radius and center point of the fisheye image according to the geometrical characteristics of the fisheye image; using an orthogonal projection to transfer the fisheye image into a hemispherical surface; using lateral and longitude curves to carry out mesh division on the hemispherical surface, thereby transferring into lateral and longitude coordinate values of the hemispherical surface; finally, projecting the lateral and longitude coordinate values to a target image coordinate to realize coarse correction conversion of the fisheye image; after using the orthogonal projection to carry out coarse correction on the fisheye image, using a plurality of angular points of the distorted checker image and the target image to carry out affine transformation; then, using a look-up table to save a coordinate mapping relation table from the fisheye image to the correction image; and using the look-up table to achieve accurate correction of the fisheye image in the checkerboard region. The method in the invention is stable in performance, safe and reliable.

The invention discloses a metal type rare earth microalloyed D-type graphite cast iron glass mould and a preparation method thereof. The glass mould comprises the following components in percentage by weight: 3.35-3.7% of C, 2.-2.2% of Si, 0.4-0.6% of Mn, 0.3-0.4% of Cr, 0.4-0.5% of Mo, 0.9-1.1% of Ni, less than 0.02% of V, less than 0.02% of Al, less than 0.02% of Cu, 0.05-0.1% of Ti, 0.02-0.05% of RE and the balance of Fe and inevitable impurities. By adopting the metal type rare earth microalloyed D-type graphite cast iron glass mould and the preparation method thereof, white tendency caused by too fast metal type cooling can be avoided; completely graphitized high temperature annealing is adopted, so that a ferrite matrix structure is obtained finally; and all the comprehensive performance indexes of D-type graphite cast iron are greatly improved, so that prerequisite requirements of the glass mould are met and the service life of the glass mould is prolonged.

The invention discloses an electro-arc heater airflow enthalpy value spectral measurement system. Based on the emission spectrum diagnosis technology, the electro-arc heater airflow enthalpy value spectral measurement system is used for acquiring the enthalpy value characteristic of high enthalpy air flow in ground heat prevention test of an electro-arc heater, the emission spectrum intensity of atom oxygen or atom nitrogen can be measured through experiments, and the enthalpy value of the airflow can be directly obtained by utilizing the quantitative relation between the emission spectrum intensity ratio of target component and the enthalpy value of high-temperature airflow. Based on the method, the quantitative measurement on the enthalpy value within the range of low enthalpy (5MJ/kg) to high enthalpy (25MJ/kg) can be realized, and the electro-arc heater airflow enthalpy value spectral measurement system is applicable to the diagnosis of total enthalpy value of airflow of various stacked, segmented, tubular electro-arc heaters.

The invention provides a system for automatically detecting electronic products through two-dimension codes and a method thereof. the system contains an information acquisition unit for acquiring detection information to be processed, a detection information processor which is connected with the information acquisition unit and is used for carrying out analytic processing on the received detection information to be processed and generating a corresponding two-dimension code of the processed detection information, a detection information display which is connected with the detection information processor and is used for displaying the two-dimension code of the processed detection information to a measured product to execute a corresponding action according to the processed detection information after acquisition of the measured product so as to determine a detection result of a corresponding detecting station where the measured product resides. According to the system and the method provided by the invention, repeated manual operations are not required. There is a fixed wired network connection between the detection information processor and an onsite monitoring and management system. Manual subjective judgment of a measured product is not depended. The detection result has reliability. Acquisition of information content is more and faster. Detection efficiency is raised, and labor cost is saved.

The invention relates to a low enthalpy arc heater airflow enthalpy diagnosis system and diagnosis method. The method is characterized in that the near-infrared laser absorption spectrum diagnosis technology is utilized to directly measure flow field parameters of the free flow of an arc heater nozzle outlet, based on H2O double-wire temperature measurement, the airflow temperature and the velocity of the free flow of the arc heater nozzle outlet are obtained, in combination with the quantitative relationship among the heat balance airflow enthalpy, the temperature and the pressure, the totallocal airflow enthalpy at the nozzle outlet is obtained. The method is advantaged in that enthalpy measurement precision is improved, the method is applicable to measurement of the airflow enthalpy ofvarious types of low enthalpy arc heaters such as tubular, AC and long section heaters within the enthalpy range of 1500-7500kJ/kg; the method is a non-contact measuring method, interference on the flow field is avoided, the method does not depend on other measurement parameters and machining precision, accurate measurement of the flow field parameters can be realized, and the method can be usedas a powerful complement to enthalpy measurement methods in the prior art.

The invention discloses a full-automatic correction system for an acceleration sensor. The system comprises an accurate temperature-control device, an angle signal measurement module, a temperature measurement module, an acceleration measurement module, a drive module and a central processing unit (CPU), wherein the CPU is connected with the accurate temperature-control device, the angle signal measurement module, the temperature measurement module, the acceleration measurement module and the drive module; and the CPU calculates the offset value of a g value to be corrected corresponding to the acceleration sensor and the standard g value under each standard g value at different temperatures, and calculates a corresponding curve of the offset value and temperature, performs polynomial fitting on the curve, resolves the coefficients of quaternion linear equation, and writes the coefficient values into the memory of the acceleration sensor for correction. The system can automatically correct the acceleration sensor, removes the problems of null drift and temperature drift, and improves the measurement accuracy of the acceleration sensor.

The invention relates to a multi-state gas-liquid optical fiber sensor for detecting pressure, temperature and component concentration simultaneously. The sensor consists of a broadband light source, a spectrum analytical instrument, a return light guide optical fiber, a first light guide optical fiber, an optical fiber coupler, a second light guide optical fiber and a sensing optical fiber probe, wherein a temperature cavity for detecting the temperature of liquid or gas to be detected, a pressure cavity for detecting the pressure of the liquid or gas to be detected, and a component concentration cavity for detecting the component concentration of the liquid or gas to be detected are formed on the sensing optical fiber probe; fiber Bragg gratings with different reflection wavelengths arearranged in the temperature cavity and the pressure cavity; the temperature and pressure information of the liquid or gas to be detected is detected by detecting the change of the reflection wavelength of each fiber Bragg grating; an evanescent field sensing area is formed on an optical fiber section in the component concentration cavity; and the component concentration of the liquid or gas to bedetected is obtained by monitoring the attenuation degree of light intensity of a corresponding wavelength section in an optical fiber through the interaction of an evanescent field and the liquid orgas to be detected.

The invention discloses an eccentric spring spatial position detection device. The eccentric spring spatial position detection device comprises an eccentric spring positioning mechanism and a coordinate measurement mechanism used for measuring a two-dimensional coordinate of a spring ring of an eccentric spring. The eccentric spring positioning mechanism comprises a pair of supports, a rotating shaft, a rotating shaft driving mechanism and a pair of positioning plates, wherein the rotating shaft driving mechanism is capable of controlling rotation angles of the rotating shaft, and the positioning plates are used for positioning two ends of the eccentric spring respectively. The rotating shaft is rotatably supported on the pair of supports, and the positioning plates both sleeve the rotating shaft and are capable of rotating along with the rotating shaft. The invention further discloses a method of using the eccentric spring spatial position detection device for determining the pitch tolerance and the outer diameter tolerance of the eccentric spring, an eccentric spring detection system and an eccentric spring detection method. By the aid of the eccentric spring positioning mechanism and the coordinate measurement mechanism, the space coordinate position of the spring ring of the eccentric spring can be acquired conveniently and quickly so as to determine the pitch tolerance and the outer diameter tolerance.

The invention relates to a navigation reminding method for short-term traffic flow prediction based on SVD-PSO-LSTM. Firstly, an LSTM model is trained and optimized; collecting historical traffic flowdata; preprocessing the LSTM model, and inputting the preprocessed LSTM model into the trained and optimized LSTM model; the method comprises the following steps: outputting a prediction result of ashort-time traffic flow by a traffic flow sensor, publishing the prediction result of the short-time traffic flow on navigation software, displaying the prediction result of the short-time traffic flow on a road section in different colors according to the traffic flow, providing displayed information for a driver to refer to congestion, and reasonably planning travel and selecting a navigation route according to the displayed information. When the LSTM model is trained and optimized, historical traffic flow data is collected, preprocessed and then divided into a training set and a test set, and then the LSTM model is trained and optimized by adopting a PSO algorithm and the training set; wherein the preprocessing comprises the step of performing noise reduction operation on the data by adopting an SVD algorithm. The method provided by the invention is more accurate in prediction effect, and can reasonably plan a navigation route.

The invention discloses a method and device for obtaining application program information on the basis of a mobile operating system. The method includes the steps of receiving an application program information acquisition request, triggering and calling an application programming interface, querying the application program information recorded in default directory files set in the mobile operating system in advance through the application programming interface, obtaining the application program information matched with the application program information acquisition request, and obtaining an application program icon through application program installation path information contained in the application program information and obtained through pre-edited code introduction. By the application of the method and device, the acquisition speed can be high, the application program icon can be obtained, and user service experience is promoted.

A farming management system comprises a communication terminal (10) carried by each farming worker, and a farming management unit (20) installed in a farming management center. The farming managementunit (20) specifies the working site of a worker based on a notice that the work is started which is transmitted when an operation button (12A) of the communication terminal (10) is depressed and positional information of the communication terminal (10), and then transmits the content of a work to be carried out at the specified working site and the work schedule to the communication terminal (10). Upon receiving information from the farming management unit (20), the communication terminal (10) displays that information at a display section (13).

The invention is a GIS-based method for establishing community management and service information, firstly binding attribute data to a map, and then based on these data, establishing and collecting all the data in a centralized managing mode into a SQ server for management and backup, where the intermediate layer adopts encrypted link, user attestation, safety channel and other technical means to ensure safety and reliability in database connection. As the centralized management for the database is needed, the database is completely isolated from the extranet and intranet; once a user needs to connect to network to access the community information system, it will use the encrypted link technique of VPN and connect to the intranet database through router. Its character is using module type GIS technique: (1) small and flexible; (2) directly embedding MIS development tool; (3) having strong GIS function.

The invention provides a chilli cytoplasm male sterile line protoplast separation purification and callus forming method, which relates to the protoplast source, separation, purification and protoplast culture and callus forming and belongs to the field of biotechnology science. The method comprises the following steps that: 1, chilli cytoplasm male sterile line aseptic seedling main leaves are used as materials for separating the protoplast; 2, young tender blades are cut and are placed into a CPW9 enzymolysis solution containing cellulase, pectinase and macerozyme, and the solution is placed onto a 27 DEG C shaking bed for dark treatment; 3, the enzymolysis liquid is filtered by a 300-mesh nylon sieve, and the protoplast is collected after centrifugation washing; and 4, the obtained protoplast is cultured into a liquid culture medium containing hormone in different concentrations, and fresh culture media are regularly added in the period until the callus is formed. In the method, the chilli male sterile materials are used for carrying out protoplast separation and culture, and important significance is realized on further studying the protoplast fusion and using the fusion technology for realizing the development of the novel chilli cytoplasm male sterile line materials.

The present invention discloses one kind of mobile communication terminal capable of providing movable image clips calculated based on the system analysis fancy and its brief movable image providing method. The mobile communication terminal includes: a characteristic extracting unit for extracting the video characteristic of the movable images and partitioning the movable images based on significant characteristics; a movable image partitioning unit for partitioning or merging the frames based on the significant characteristics to form movable image clips; and a movable image clip storing unit for saving the formed movable image clips. The present invention makes it possible for the user to obtain required image information fast.

The embodiment of the invention provides a method, device, a server and a system for displaying chat messages in live streaming. The invention discloses a method for displaying chat messages in live streaming. The method is applied to a management server of a live streaming system, and comprises the steps of requesting a bounded queue of a live streaming room from a specified server when it is detected that audiences enter the live streaming room which starts live streaming, thereby enabling the specified server to search for the bounded queue from a memory of the specified server and return the bounded queue to the management server; wherein the bounded queue is a queue obtained by storing a specified number of chat messages in the live streaming room according to a first-in first-out rule; and sending the received chat message in the bounded queue as a target chat message to a client of the audience, so that the client displays the target chat message. According to the scheme, the display efficiency of the target chat message in live streaming can be improved.

The invention discloses a planning method of an automatic driving system. The invention discloses a planning method of an automatic driving system. The method comprises the steps that S1, acquiring acurrent road environment image g by the system, using a filter in the convolutional neural network to extract the structure and road condition information Phi of the road image; and obtaining reward information R of the current road environment image through the mapping function fR, obtaining initialization of a kernel function Kwp for irregular graph convolution operation through the mapping function fP, and using an adjacent matrix of the image as an activation parameter of the Kwp to obtain an initial convolution operation sub-P. The deep reinforcement learning method based on the generalized asynchronous value iterative network model has the beneficial effects that the problem that an existing automatic driving system cannot carry out high-success-rate and high-accuracy road planning in a road environment with a complex structure and unknown road condition information can be well solved.

The invention discloses a culture method of a virus-free test-tube corm of Fanhong No.1 crocus sativus l. The culture method comprises the following steps: soaking a crocus sativus l. corm with warm water, then carrying out water culture germination acceleration, taking a lateral bud of the corm, culturing, stripping to take a shoot tip meristem on the obtained aseptic seedling, culturing, taking the seedling as a plant I when the seedling grows to the height of 1.5 cm-2.0 cm, carrying out bean yellow mosaic virus particle detection on the plant I, if virus particles are detected, stripping to take a shoot tip meristem from the plant I to replace the shoot tip meristem stripped from the aseptic seedling in the former step, and repeating the steps until the plant I containing no bean yellow mosaic virus particles is obtained; culturing the plant I containing no bean yellow mosaic virus particles; and inoculating a corm induced expansion culture medium with induced cluster buds, and culturing until the buds grow to required size. The method can produce a large amount of high-quality virus-free healthy seedlings with the same genetic background in a short time.

The invention discloses a method for producing gynoecial loaches. The method comprises the following steps: (1) artificial propagation and artificial insemination; (2) sex reversal: reversing most XX male fishes in fries into XX physiological male fishes by taking artemia larvae soaked into a male hormone solution as a bait, remaining XY male fishes unchanged, and removing XX female fishes till male fishes and female fishes can be distinguished; (3) test mating: feeding the XX physiological male fishes and the XY male fishes to a sexually mature state, mating with the XX female fishes respectively, and remaining a parent of which all offspring are XX female fishes, namely, the XX physiological male fishes; (4) reproduction: mating the XX physiological male fishes and the XY male fishes to produce 100 percent XX female fries, and carrying out sex-reversing on a part of the female fries into XX physiological male fishes according to the step (2); (5) establishment of a population: mating the XX female fishes and the XX physiological male fishes to produce 100 percent XX female fishes, and repeating the steps (4) and (5) to continuously produce gynoecial loaches on a large scale.

In a vehicle drive device comprising a differential mechanism and a motor provided therein, size of the drive device can be reduced, fuel consumption is improved, or occurrence of speed change shock is suppressed. Since an exchange clutch C0 or an exchange brake B0 is provided, a speed change mechanism (10) is switched between a variable speed state and a stepped speed state so as to obtain a drive device having both advantages of fuel consumption improvement of a transmission having a speed change ratio electrically altered and high transmission efficiency of a gear type transmission for mechanically transmitting power. During speed change of an automatic speed change section (20), learning method of engaging pressure is altered by an engaging control amount control means (84) according to the fact whether a differential section (11) is in variable speed change state or not, and the rotational speed N18 of a transmission member is varied to satisfy both enhancement of feeling and suppression of speed change shock depending on the stepless speed change state and non-stepless speed change state having different inertia at the time of speed change, thus suppressing occurrence of speed change shock.

A single image self ¿C calibration method of relative parameter for structural light 3D system confirms all solutions of normalized relative translation positions [ TxTyTz]T as well as obtains unique correct solution and its rotary matrix R by obtaining a scene image to pick up calibration data ( Xc.Yc ) and ( Xp.Yp ) , to set up calibration data matrix A and to obtain three unknown coefficients of form solution e through reprojection method of structural light visual system with known internal parameters of video camera or projector and with five unset parameters to describe component relative relation .