528results about How to "Guaranteed precision" patented technology

Provided is a measuring device and a calibration method for optical lens distortion. The measuring device comprises a single star light simulator, an adjusting rack, a to-be-tested lens, a CCD (charge coupled device) camera, a one-dimensional air flotation turntable, an angle encoder, a computer and an optical platform. The calibration method includes the steps of using a centroid localization algorithm to determine centroid position coordinates of a star point image when the to-be-tested lens is under different fields of view, establishing a calibration model for the to-be-tested lens distortion based on the distribution of the centroid position coordinates of the star point image under the entire field of view, and realizing the calibration of the distorted to-be-tested lens. The measuring device and the calibration method for the optical lens distortion has the advantages that the device is simple; the method is convenient; measurement accuracy is high; and the optical lens distortion can be easily measured and calibrated.

The invention discloses an SIMD (single instruction multiple data) optimization-based webpage duplication elimination and concurrency method, which comprises the following steps of: 1, extracting text information of webpages, namely extracting effective information of webpages; 2, extracting Shingle, namely extracting webpage characteristics and generating a Shingles set; 3, clustering to reduce comparison times and reduce time and space complexity; and 4, comparing fingerprints to find similar webpages and delete the similar webpages. The SIMD optimization-based webpage duplication elimination and concurrency method can ensure the precision rate and the recall ratio, and effectively improves the rate of detecting webpage similarity.

The invention discloses an image retrieval system integrating classification with hash partitioning, which comprises a downloading module, a classification module training module, an image classification module, a characteristic extraction module, a recording table building module, a partitioning module, a request processing module, a retrieval module, a similarity acquiring module and a result returning module. The downloading module is used for downloading images so as to build an image library, the classification model training module classifies the images in the image library according tothe shapes and selects representative sample images from the image library to form a sample library firstly, then extracts characteristic descriptors of the classification bottom layer of all images in the sample library and performs trainings on the characteristic descriptors of the classification bottom layer by a support vector machine so as to obtain discriminant of each classification. Classification models are formed according to the discriminants of all the classifications. Precision ratio of the image retrieval system is increased, the problem of low recall ratio during classificationmistakes is overcome, and the retrieval speed of the image retrieval system is increased integrally.

The invention discloses a digital copyright protection method and a system. The method comprises the following steps: performing pretreatment on the original digital content provided by a content supplier before distribution and operation; conducting management of copyright constraints on the pretreated digital content through a mode of an authorized license; accessing and using the digital content containing the copyright constraints via a terminal in accordance with corresponding right constraints, and sending supervision records formed by the usage and the access to a credible third-party supervision server; and managing the supervision records which are formed by accessing and using the digital content containing the copyright constraints via the terminal with the credible third-party supervision server. The invention realizes balance constraints of all roles in a value chain of the digital content, which are required by the digital copyright protection system, so as to truly protect legitimate rights of a digital content copyright holder.

The present invention discloses a certification image inclination correction method and device, belonging to the image processing technology field. The method comprises: obtaining a certification image; employing a plurality of detectors to preliminarily determine the direction of the certification image, and regulating the direction of the certification image according to the preliminarily determined direction; determining the regulated character position on the certification image to obtain a character distribution map; determining a final rotation angle according to the character distribution map; and rotating the certification image according to the final rotation angle. In the embodiment, a plurality of detectors are used for performing rough direction detection and perform preliminary correction of the certification image, and precision detection is performed based on the character distribution map to perform fine tuning of the certification image so as to ensure the corrected whole direction through the preliminary correction; and after the preliminary correction, it is needed to detect the angle of inclination in a small range and then perform corresponding fine tuning, and compared to one-time regulation, the two-step correction mode is high in regulation precision and good in correction effect.

The invention discloses an enquiry word automatically debugging method in a scanning generator which comprises: building an enquiry word stock, statistic the enquiry words of a enquiry log, putting the enquiry words whose average of everyday enquiry exceed the threshed into the enquiry words stock. Toward the new enquiry words which users input, matching it with the words in the enquiry words stock first, if match completely, the do nothing; if not match completely, then enquiry a most approximate words, if enquiry successful, returning the approximate words in the enquiry stock to the user to audit; if enquiry faulting, then do nothing.

The invention provides an integrated system of test detection, management and monitoring and method, which is applicable to the fields of test detection mechanisms and quality monitoring departments. The system is divided into three layers according to the structure, wherein, the first layer is a test data acquisition layer, the second layer is a test business management layer, the third layer is a superior monitoring management layer, and the layers are connected through the network. The system is composes of a video device, a sampling detection instrument, a business management computer, a business database server, a central database server, a monitoring management computer, a printer, data acquisition software, transmission instrument software, business management software and monitoring management software. The invention comprises the following steps: acquiring test data and images; uploading data and image information, receiving, storing and managing test information, generating detection record and report; uploading detection record and report; receiving uploaded information from the laboratory and monitoring and managing. The invention is safe and reliable, simple in installation, easy in operation, and has strong practicability and good development future.

The invention relates to a laser detection and control system for barriers between a shield door of a metro platform and a train door, comprising a monitoring unit, a control unit and an alarm unit, wherein, the controller comprises a CPU module, a liquid crystal terminal, a signal isolator, buttons and a safety relay; generating lasers are respectively installed on a front bracket, and a laser receiver or a laser reflection plate is installed on a rear bracket corresponding to the front bracket; the control ends of the generating lasers are connected with the output end of the controller, and the output end of the laser receiver is connected with the input end of the controller; the corresponding output end of the controller is correspondingly connected with the control input end of the shield door; and the corresponding output end of the controller is connected with a buzzer and a caution light of the platform. The laser detection and control system realizes the intelligent operation of judging the existence of barriers between the shield door of the metro platform and the train door, has the advantages of compact integral structure, reasonable cost, easy and convenient installation, simple and intelligent operation, stable and reliable performance, higher practicability and favorable development prospect, and is applicable to metro platform.

The invention discloses a method and a kit for rapidly constructing a target nucleic acidsequencing library on the basis of probe capture and enrichment. The method comprises following steps and adopts reagents required for the steps: genome DNA is subjected to fragmentation; DNA end repair is performed; a probe and a single-stranded DNA fragment formed through thermal denaturation are subjected to molecular hybridization; biotin-avidinmagnetic bead separation is executed; the probe is taken as a primer for primer extension, and a complementary strand is synthesized; one end of a double-stranded DNA fragment is connected with an linker, and the other end is not connected with the linker; PCR amplification is performed; DNA fragment lengthselection is executed; the reagents are used for completing the reactions of all the steps. Compared withconventionaltarget nucleic acid enrichment technologies, the method has the advantages of good fidelity, good reproducibility, high speed and high universality.

The invention discloses a credibility verification method based on DNSSEC and DANE protocols. The method includes the steps that first, a key pair is generated for each object to be verified, a public key is submitted to an authoritative server, a private key is stored on a set encryption card and cannot be copied; second, a sub-domain name is allocated to the object to be verified in the DNS domain by the authoritative server, a DANE resource record for storing the public key of the object to be verified is added for the objected to be verified, and signature is performed through the public key; third, the identification of the object to be verified is acquired by a user through a credibility verification client and converted into a domain name, and then a query request is initiated to the DNS domain of the authoritative server; fourth, the corresponding DANE resource record is returned through the authoritative server; fifth, the user acquires the identification of the object to be verified and sends the identification of the object to be verified to the encryption card so that the identification of the object to be verified can be encrypted; sixth, the ciphertext is decrypted by the credibility verification client through the public key in the returned resource record, and then the object to be verified is verified. Through the credibility verification method based on the DNSSEC and DANE protocols, the anti-fake capacity is greatly improved.

The invention discloses an automatic perforating device for an automobile hub and mainly relates to the field of automobile refitting and maintaining devices. A base assembly, a drilling machine assembly and a clamp tool assembly are included, wherein the drilling machine assembly and the clamp tool assembly are installed on the base assembly; the drilling machine assembly comprises a drilling machine head, and the bottom of the drilling machine head is provided with a connection piece used for installing an accessory; the drilling machine head and the base assembly are fixed on the plane; theclamp tool assembly comprises an adjusting disk rotationally connected with the base assembly, and the center of the adjusting disk corresponds to the connection piece; the base assembly is providedwith an angle locking device capable of achieving peripheral limiting on the adjusting disk; the top of the adjusting disk is provided with a sliding base which is a long-strip-shaped rod piece extending along the axis of the adjusting disk; a sliding sleeve is matched on the sliding base in a sliding manner; the two ends of the sliding base penetrate through the sliding sleeve and are provided with scales; and a three-jaw chuck used for clamping the hub is arranged in the middle of the top face of the sliding sleeve. The automatic perforating device for the automobile hub has the beneficial effect that the hole drilling precision of a center hole in one side of a spoke of the hub and peripheral holes can be remarkably improved.

The invention discloses a heavy-load precision redundant three-arm mechanical hand based on a traveling crane. The three-arm mechanical hand comprises a base, a clamp assembly and an automatic control system, wherein the clamp assembly comprises a mounting seat used for mounting mechanical arms, a gripping mechanical hand used for gripping a workpiece, and a carrying mechanical hand used for carrying the gripped workpiece; the gripping mechanical hand comprises a heavy-load mechanical hand used for gripping a heavy workpiece, and a light-load mechanical hand used for gripping a light precision workpiece. According to the three-arm mechanical hand, the gripping mechanical hand adopts a redundant mechanical arm structure, the heavy-load mechanical hand is used for loading a heavy object, the light-load mechanical hand is used for carrying a precision device, and the two gripping mechanical hands can cooperatively carry and mount the workpiece in space, so that the problem of conflict between heavy load and precision in the field of mechanical hands is solved; in addition, due to the carrying mechanical hand, the disadvantage that a traveling crane needs to run a round trip for carrying a part at present is overcome, the labor intensity of workers is greatly reduced, the production efficiency of workshops is improved, and the energy consumption is greatly reduced.

The invention discloses high-strength and high-tenacity polypropylene composite materials. The high-strength and high-tenacity polypropylene composite materials solve the problems that existing polypropylene is poor in tenacity and poor in strength. The high-strength and high-tenacity polypropylene composite materials are formed by the following components, by weight, 35-75% of polypropylene, 10-40% of calcium carbonate, 8-25% of calcium sulfate whisker masterbatch, 0.1-2% of coupling agents, 2-8% of compatilizer, 0.3-4% of lubricating agents and 0.2-0.8% of antioxygen. The invention further provides a preparation method of the high-strength and high-tenacity polypropylene composite materials. According to the preparation method of the high-strength and high-tenacity polypropylene composite materials, through the mode that calcium sulfate whiskers are made into masterbatch, the calcium sulfate whisker masterbatch is added to plastics to carry out co-extrusion mixing with the plastics and the like, thus, compared with powdery whiskers, material preparation can be evener and controllable, the problem that material preparation of the calcium sulfate whiskers is difficult is solved, meanwhile, the calcium sulfate whiskers are made to have better dispersity in plastic substrate, and the surfaces of products are smoother.

A method and apparatus for training a model are disclosed in embodiment of that present application. The method comprises the following steps: determining M computing nodes of the first data subset from the block chain system, wherein the client device can select K computing nodes from the M computing nodes for model training and obtain the training results of P computing nodes from the K computing nodes; Further, the client device may obtain the model parameters according to the training results of each data subset in the Y data subsets. In the embodiment of the present application, by adopting the training model of the computing node in the block chain system, it is unnecessary to construct a dedicated machine learning algorithm group, thereby saving the cost and reducing the waste of the social resources; Furthermore, the training efficiency of the model can be improved by selecting the computing nodes with strong storage and processing ability in the block chain system, and then the better training effect can be obtained.

The invention relates to a method for detecting content of soil alkali-hydrolyzable nitrogen, which aims at solving the problems of the incapability of batch quantity analysis, the increase of workload, great error and insufficiently accurate detection data of the existing alkali hydrolysis diffusion method for analyzing the content of soil alkali-hydrolyzable nitrogen. The method comprises the following steps: 1. preparing a plastic diffusion vessel filled with samples to be subjected to soil alkali hydrolysis; 2. carrying out alkali hydrolysis; 3, preparing a blank control sample; 4. calculating the contents W1, W2, W3, W4 and W5 of soil alkali-hydrolyzable nitrogen of five samples by using a formula which is shown in the specification; and 5. averaging to obtain the content of soil alkali-hydrolyzable nitrogen. By virtue of the method, the content of the soil alkali-hydrolyzable nitrogen can be detected.

The invention provides an anti-Mullerhormone latex enhanced turbidimetry detection kit. The kit includes a reagent R1 and a reagent R2; the reagent R1 includes HEPES, KH2PO4, PEG6000, BSA, etc.; and the reagent R2 includes HEPES, KH2PO4, PEG6000, latex microspheres crosslinked with goat anti-human AMH polyclonal antibodies, etc. A preparation and application method for the kit is also provided. The kit firstly utilizes a latex enhanced immunity transmission turbidity method to determine anti-Mullerhormone, and can be used on a fully automatic biochemical analyzer, so that the kit is low in cost and high in automation, and therefore, detection time can be greatly saved; and in the case of high stability and precision, the kit has higher sensitivity than ELISA products and has better specificity than chemiluminescent products, so that the clinical application values of anti-Mullerhormone detection can be greatly enhanced.

The invention discloses a knitting mechanical device. The knitting mechanical device comprises a machine case and a knitting machine; the bottom of the knitting machine penetrates through machine caseand extends into an inner cavity of the machine case; sliding ways are disposed on the two sides of the inner cavity of the machine case correspondingly; a first supporting plate is fixedly connectedto the bottom of the knitting machine; and supporting rods are fixedly connected to the two sides of the first supporting plate correspondingly. By arranging the first supporting plate, the effect ofsupporting the knitting machine is achieved; by arranging dampers, the buffering and damping effects on the knitting machine are achieved, and meanwhile the effect of stably supporting the knitting machine is achieved; by arranging an arc-shaped plate, a first spring and second springs, the damping effect on the knitting machine is achieved, meanwhile the effect of stably supporting the knittingmachine is achieved, the precision of knitted products is guaranteed, the service life of the knitting machine is prolonged, and the problems that the precision of the knitted products is affected dueto large vibration when the knitting machine works, and the service life of the knitting machine is shortened are solved.

The invention discloses an adjustable glass column side face grooving device which comprises a machine frame.A rotating assembly is arranged on the machine frame.The two sides of the rotating assembly are provided with a fixing assembly and a grinding assembly respectively.The fixing assembly comprises a fixing base arranged on the machine frame.A strip-shaped groove is formed in the fixing base.The two side faces corresponding to the strip-shaped groove are provided with an upper sliding rail and a lower sliding rail respectively, wherein the two sliding rails are parallel to each other.A supporting rod is perpendicularly arranged inside the strip-shaped groove.Sliding grooves corresponding to the sliding rails are formed in the supporting rod.The supporting rod is connected to the sliding rails through the sliding grooves.One side of each sliding rail is provided with an air pump for driving a spiral vertical rod to move left and right.One side of the supporting rod is horizontally provided with a transverse plate.The lower portion of the transverse plate is perpendicularly provided with a stretchable column.A second bearing is arranged at the bottom of the stretchable column.A rotating rod is arranged at the bottom of the second bearing.A first connecting disc is arranged on the rotating rod coaxially.A first concave hole is formed in the center of the bottom of the first connecting disc.The adjustable glass column side face grooving device has the advantages that the structure is simple, and the requirement for grinding grooves of different types can be met.

The invention provides a method and a system for predicting resources based on edge computation. In the process of prediction object conversion and pretreatment, noise and other interference factors are effectively avoided, which improves the accuracy and robustness of the prediction. The middle layer design of the model incorporates as much a priori information as possible to ensure that the correction of prediction value and the update of the weight of the resource prediction model are carried out according to the facts. The forward propagation and backward propagation of the loop make the error of the predicted value decrease and converge gradually. At the same time, the corresponding judgment conditions are set up to ensure the effective process of the loop propagation and transmission.

Disclosed is a harmonic wave speed reducing mechanism of an inertance stabilizing tracking platform. The harmonic wave speed reducing mechanism of the inertance stabilizing tracking platform comprises a driving structure part, a harmonic wave transmission part and a transmission output structure part, wherein the driving structure part comprises a motor rotor assembly, a motor stator assembly, a motor shaft assembly and a motor installation assembly, the harmonic wave transmission part comprises a harmonic wave generator, a harmonic wave steel wheel and a harmonic wave flexible wheel, and the transmission output structure part comprises a transmission shaft assembly, a transmission shaft sleeve assembly and a lead wire slip ring assembly. Control of the degree of freedom of rotation is achieved through a driving structure, and power support is provided to movement of the platform. A harmonic wave transmission structure is a belt of the driving structure and a transmission structure, and driving of loads of different levels can be achieved through different gear ratios. Speed reduction and twist increase of an output shaft are achieved through a transmission output structure, and servo control of an angle movement of a transmission shaft is achieved according to a programming instruction. The harmonic wave speed reducing mechanism of the inertance stabilizing tracking platform is suitable for control of the inertance stabilizing platform and has the advantages of being large in transmission ratio, good in transmission rigidity, small in size of the driving unit, light in weight, simple in structure and the like. The harmonic wave speed reducing mechanism of the inertance stabilizing tracking platform is capable of improving carrying capacity and stabilization precision of the platform and is suitable for framework driving of aerial remote sensing and target tracking.