460results about How to "Reduce usage requirements" patented technology

The invention provides a capacitive micromachined tuning fork gyroscope. The gyroscope is the symmetrical dual-mass structural gyroscope, comprising a substrate and a framework arranged in the centre of the substrate, wherein the middle of the framework is provided with a framework beam perpendicular to the framework; two detection mass blocks are symmetrically arranged in the framework with the framework beam as a symmetry axis, and four corners of each detection mass block are connected with the framework and the framework beam through at least four drive beams; decoupling drive comb capacitors are respectively arranged at both ends of each detection mass block in the direction of a vertical axis; detection comb capacitors are symmetrically arranged on both outer sides of the framework in the direction of a horizontal axis; at least four detection beams are arranged on both outer sides of the framework in the direction of the vertical axis; and the detection beams are distributed symmetrically relative to the vertical axis and the horizontal axis and are fixed on the substrate through corresponding anchor points. According to the capacitive horizontal-axis micromachined tuning fork gyroscope provided by the invention, the mechanical coupling between the detection mode and the driving mode of the micromachined tuning fork gyroscope can be solved easily and effectively.

The invention discloses a Hadoop parameter automatic optimization method based on performance pre-evaluation. The method comprises the following steps: statistically analyzing operational characteristics of an application run by a user on the Hadoop cluster to generate an output file; obtaining the output file and extracting from the output file of run time of various stages, processed and transmitted data, resources allocated for running the Hadoop application and a corresponding parameter configuration scheme of the Hadoop application, and according to the run time of various stages, the processed and transmitted data, the resources allocated for running the Hadoop application and the corresponding parameter configuration scheme of the Hadoop application in the output file, computing the total run time of the Hadoop application by utilizing MapReduce simulation technique; and according to the pre-evaluated performance of the Hadoop application under a current parameter configuration scheme and by utilizing the genetic algorithm, adjusting the corresponding parameter configuration scheme of the Hadoop application. The Hadoop parameter automatic optimization method based on performance pre-evaluation solves the problems of high cost, low efficiency, high threshold and capability of adding complexity of Hadoop codes in the existing method.

The invention relates to a small electric unmanned helicopter aerial photography system based on a front-end triaxial-type pan-tilt. The small electric unmanned helicopter aerial photography system is a small unmanned helicopter aerial photography system design mainly comprising a front-end triaxial-type pan-tilt design, a small unmanned helicopter platform design, a ground station design, and a communication system design, and belongs to the technical field of aircraft designs. The aerial photography system is light and flexible, high in integration level, low in noise, small in vibration, good in use maneuverability, low in requirements on the conditions of use environments, site and the like, and capable of realizing the omnibearing photography. The aerial photography system has a high practical value and a wide application prospect in the field of unmanned aircrafts.

The invention discloses an automatic detection and identification apparatus of a concealed object. The apparatus comprises a scanning device, an adjusting module, a segmentation positioning module, a bar and rod combination model generation module, a non-human-body object preliminary detection module, a non-human-body object distribution module and a category recognition module. By using the automatic detection and identification apparatus of the concealed object, the detection and the identification of the concealed object are turned to be automatic from manual, which reduce a usage requirement of personnel, decrease a personal error and shorten detection interpretation time.

The invention discloses an automatic detection and identification method for hidden articles. The method comprises the following steps of: performing millimeter-wave scanning on a detected person to obtain an original image; regulating the original image to obtain a target image; segmenting and locating parts of a human body according to the target image; generating a bar combination model; detecting a non-human body target according to the original image to obtain a non-human body target distribution original image; obtaining position distribution information of the non-human body target distribution original image relative to the human body through the bar combination model; and identifying the type of the non-human body target and displaying the position distribution information of the hidden articles relative to the human body. By the automatic detection and identification method for hidden articles provided by the invention, a manual mode of detection and identification for the hidden articles is changed to an automatic mode, demands on staff is lowered, human error is reduced, and the detection and judging time is shortened.

The invention relates to a capacitance horizontal axis micro-mechanical tuning fork gyroscope which is characterized by including an underlay, anchor points, a detection folding beam, a framework, a drive folding beam, a detection quality block, a drive comb capacitance and a detection comb capacitance; the drive comb capacitance and the detection comb capacitance respectively include a movable electrode and a fixing electrode; the anchor points, the detection folding beam, the framework, the detection quality block, the drive comb capacitance and the detection comb capacitance are symmetrically arranged relative to the X-axis and the Y-axis of the gyroscope; the movable electrode of the drive comb capacitance is fixedly connected with the detection quality block; the detection quality block is connected with the framework by the drive folding beam; the movable electrode of the detection comb capacitance is connected with the framework; the framework is connected with the anchor points by the detection folding beam; the anchor points are fixedly connected with the underlay; the fixing electrode of the drive comb capacitance and the fixing electrode of the detection comb capacitance are fixedly connected with the underlay by the anchor points of each own. The capacitance horizontal axis micro-mechanical tuning fork gyroscope has a simple technical process, can be compatible with a Z-axis tuning fork gyroscope, can be used for realizing a chip triaxial gyroscope and can realize batch production.

The invention relates to a method for preparing a composite electrode material of a super capacitor. The method comprises the following steps of: (1) ultrasonically dispersing graphite, sodium nitrate and concentrated sulfuric acid into an ice bath, adding potassium hypermanganate, magnetically stirring, adding deionized water, magnetically stirring to make a mixture uniform, re-adding the deionized water, stirring at constant temperature, reacting in a water bath, cooling, adding hydrogen peroxide, centrifugally washing, freezing and drying in vacuum, and thus obtaining graphite oxide; (2) dispersing the graphite oxide, nickel salt and cobalt salt into a solvent, and performing solvothermal reaction to synthesize a Ni(OH)2/CoO/rGO composite material; and (3) uniformly mixing a Ni(OH)2/CoO reduction graphene oxide composite material, carbon black and polyvinylidene fluoride, stirring at room temperature, uniformly coating on the surface of nickel foam, drying in vacuum, and thus obtaining the composite electrode material of the super capacitor. The method is easy to operate and low in equipment using requirement. Raw materials are easily obtained, low in toxicity and low in cost. A novel method is provided for preparation of a nanosheet composite electrode material.

The invention discloses a signal reproduction type integrated circuit board failure detection device which is composed of two portions including a hardware portion and a circuit portion. The hardware portion comprises a housing, alternating current connection wires, a power switch, a USB interface, a SD card interface, a circuit board interface to be detected, an integrated board, keys, a display screen, and a power indicator light. The circuit portion comprises a power circuit, a multi-channel signal acquisition and reproduction circuit and a master control circuit. The master control circuit comprises a single chip microcomputer, a display device, a USB interface, a storage device and the like. The multi-channel signal acquisition and reproduction circuit comprises a single chip microcomputer, an A/D conversion and D/A conversion circuit, a signal amplification circuit and the like. The device is used to acquire signals of a standard circuit board, and the acquire input signal is reproduced onto a corresponding input channel of a failure integrated circuit board, and at the same time, the input/output signal conditions of the failure integrated circuit board are acquired, so that from the input/output signal abnormal conditions, the position of a failure can be judged without knowing the internal structure of the integrated circuit board, so the maintenance speed can be greatly quickened, and the maintenance difficulty can be simplified.

The invention relates to a production process of an E-TPU (expanded thermoplastic polyurethane) shoe material. The production process of the E-TPU shoe material comprises the steps implemented in sequence as follows: a, material preparation: 75-92 parts of TPU foamed particles, 5.9-19 parts of glue A, 0.9-4.8 parts of glue B and 0.38-1.5 parts of an accelerator are prepared by weight; b, addition of the glue A: the TPU foamed particles and the glue A are stirred uniformly; c, addition of the glue B: the glue B is added after the materials in the step b are mixed uniformly, and the materials are stirred uniformly; d, addition of the accelerator: the accelerator is added after the materials in the step c are mixed uniformly, the materials are mixed uniformly, and the mixture is injected into a die cavity; e, foaming: the die cavity is moved into an oven, foaming molding is performed at 50-70 DEG C for 2-3 min, and the molded shoe material can be obtained. The TPU particles can account for 90%-92% by weight of the shoe material, the weight reduction limit of the current shoe material is reached, and the E-TPU shoe material has the characteristics of being ultralight, ultrahigh in elasticity, more environment-friendly, low in cost and capable of performing massaging.

The present invention relates to systems and methods for saving results generated from database queries such as raw data, objects. queryable data sets, full or partial web responses, in memory for current and subsequent utilization and invaliding the saved results when they become inconsistent to mitigate employing inconsistent results. The saved results can be employed by one or more components and are typically utilized when a subsequent query would return substantially similar results. Thus, the system and methods mitigate performing substantially redundant queries that can reduce performance and consume resources. When a database change occurs that affect the consistency of the saved results and/or expiration period lapses, an invalidation message can be transmitted, wherein the message is employed to invalidate the saved results. Thus, the systems and methods mitigate employing inconsistent saved results. In addition, automatic requerying techniques can be employed to automatically refresh inconsistent results to obtain consistent results.

A phase principal value extraction method based on a full convolutional neural network comprises the following steps: 1) projecting a fringe pattern which is distributed according to sine and is required by pre-coding and a pre-coded fringe pattern on a computer to a to-be-detected object, and collecting the fringe pattern of the to-be-detected object by using an industrial camera; 2) constructinga full convolutional neural network model, setting a training parameter and a loss function, inputting the picture obtained in the step 1) into the neural network, and operating the neural network toobtain a required phase principal value; and (3) unwrapping the phase main value obtained in the step (2) by using a method based on quality map guidance to obtain an accurate phase value. The invention provides the phase main value extraction method based on the full convolutional neural network, which has the advantages that the image acquisition quantity is small, a training data set and a training process are not needed, and the precision is relatively high.

Provided are a truck loading robot and a truck loading method thereof. The truck loading robot is provided with an elastic stretching device and an elastic conveying line, the fixed end of the stretching device is arranged on a fixed base, a manipulator is mounted at the mobile end of the stretching device and enters into a truck or move to the side face of the truck along with the stretching device, and materials stretching onto the conveying line on the side face of the manipulator are grabbed, put in the truck and stacked by the manipulator; the manipulator is further provided with a vision detector, a control system controls moving of the stretching device and the conveying line and grabbing work of the manipulator according to the measured result of the vision detector. The truck loading robot and the truck loading method can finish stacking work of the materials extremely conveniently and quickly, are very high in automation degree, effectively relieve labor intensity and improve production efficiency; meanwhile, the truck loading robot is simple in structure and easy to manufacture, the work process is stable and fast, and the truck loading robot can be conveniently installed on different sites and is very wide in application range.

The invention discloses a method for allocating bicycles at public bicycle rental stations with urgent demands in a city. The method mainly comprises two parts of determining a bicycle borrowing demand of a rental station and determining the number of returned bicycled. The method comprises the following steps of determining a service radius of the public bicycle rental station with the urgent demand; on the basis of the service radius, considering the influence of individual family influence factors and trip characteristics of residents on trip mode selection, establishing a multi-element Logit model for trip mode selection of the residents, and calculating the bicycle borrowing demand of the rental station; according to historical OD data of a public bicycle system, considering current bicycle return and potential bicycle return, and determining the number of the returned bicycle in peak time at the public bicycle rental station; determining the bicycle allocating number at the public bicycle rental station with the urgent demand according to a difference value between the bicycle borrowing demand and the number of the returned bicycles in the peak time. The method for allocating the bicycles at the public bicycle rental stations with urgent demands in the city provides reference for allocating the bicycles at the public bicycle rental stations with urgent demands in the city in the peak time.

The invention relates to a high-temperature flow field whole-process water-cooling bent frame. The bent frame comprises a main frame body, a windward plate, a plurality of pitot pressure probes, a plurality of total temperature probes, a water pipe, a triangular supporting frame and a connecting strut, wherein the windward plate is fixedly connected to one side of the main frame body, the triangular supporting frame and the connecting strut are fixedly connected to the other side of the main frame body, the plurality of pitot pressure probes and the plurality of total temperature probes are fixedly connected to the windward plate at intervals, the water pipe is erected at the bottom of the main frame body, side water channels are formed in the two sides of the main frame body, a front water channel is formed in the front end face of the windward plate, the water pipe comprises a water inlet pipe part and a water outlet part, the water inlet pipe part communicates with the bottom of theside water channel in one side of the main frame body, the top of the side water channel in one side of the main frame body communicates with the top of the front water channel and the top of the side water channel in the other side of the main frame body, and the bottom of the front water channel and the bottom of the side water channel in the other side of the main frame body communicate with the water outlet pipe part. The bent frame has the advantages that the bent frame can work normally in a 3,100K flow field, ablation of the bent frame is avoided, and meanwhile ideal flow field data isobtained.

The invention discloses a hyper-high purity extracting technology of natural graphite, which comprises the following steps: (1) putting natural graphite in the container to do oxidizing disposal with low-middle carbon content more than 98%; (2) fusing at high temperature; (3) inputting in the metal erosion-proof container; proceeding dealkalization; (4) deacidifying to wash to neutral; (5) proceeding electromagnetic black metal removing disposal in the floating pool; (6) heating in the autoclave from 118 deg, 206 deg and 220 deg separately; (7) using pure water to dispose; (8) dehydrating; (9) drying until the water content is less than 0.1%.

The invention discloses a super-high-rise glass curtain wall installation device, which includes cable-stayed steel wires, cable-stay rods, pre-buried wall parts installed on multi-layer walls, bracket connecting bolts, electric hanging baskets, cantilever brackets and lifting frames. Electric hoist, the two ends of the cantilever bracket are respectively connected to the lowermost pre-embedded wall parts and the bracket connecting bolts, the cable-stayed steel wires are connected between the bracket connecting bolts and the uppermost pre-embedded wall parts, and the diagonal-stay rods are connected to the brackets. Between the bolts and the pre-embedded wall parts of the middle layer; the I-beam rail on the cantilever bracket is connected to the electric hanging basket and the lifting electric hoist. The invention can make the operation of managers safer, more convenient, faster and more humanized, and improve work comfort and work efficiency; the installation and disassembly are simple, and can be recycled multiple times; the hoisting efficiency is high, the installation speed is fast, and the construction speed is greatly improved.