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269results about How to "No limitations" patented technology

Deep convolutional neural network-based abnormal crowd behavior visual detection and analysis early warning system

The invention discloses a deep convolutional neural network-based abnormal crowd behavior visual detection and analysis early warning system. The system comprises a camera mounted at a monitoring target facility, a security prevention cloud server and an abnormal crowd behavior visual detection and analysis early warning system. In the system, various human body objects in the target facility areextracted through a deep convolutional neural network technology; then motion states of human bodies are calculated, identified and judged by using an optical flow method; different states of the human body objects are subjected to clustering and crowd modeling; further crowd objects are subjected to density calculation and danger index calculation; and finally according to different combinationsof crowd density, motion vector values and duration quantitative index data, various abnormal crowd behaviors are identified and judged, and according to the states of the abnormal crowd behaviors, corresponding crowd gathering management control policies are enabled. The deep convolutional neural network-based abnormal crowd behavior visual detection and analysis early warning system provided bythe invention is unlimited in scale, relatively high in precision and relatively good in robustness, and is based on a deep convolutional neural network.
Owner:ENJOYOR COMPANY LIMITED

Long distance concentrated phase conveying system and method with auxiliary blowing apparatus

The invention relates to a long-distance dense-phase conveying system provided with an assistant blowing device and a method thereof. The conveying system comprises an air control apparatus formed by an air compressor, an air storage tank and a system control apparatus; a material storage bin and an on-line sub-bin which are formed by a material tank, a bin controller and a solid-air separator; a sending tank; a fluidization conveyor formed by a streamline casing, a guiding clapboard and an air inlet; a tube liner provided with air inlets arranged by an outer conveying pipe according to subsections and a dense-phase conveying pipeline formed by the assistant blowing device . The tube liner is fixedly connected with the inner upper wall of the outer conveying pipe; the assistant blowing device is fixedly connected and communicated with the outer pipe and tube liner. The dense-phase conveying method comprising the following steps: materials enters the sending tank from the material storage bin and then enters the dense-phase conveying pipeline through the fluidization conveyor and under the effect of compressed air to form a series of material plugs flowing in the conveying pipeline and finally the material reaches the sub-bin for processing and manufacturing. The invention has the advantages that the energy cost is low; the damage to material during the conveying process is less; the wearing to pipeline can be reduced; and the service life is long.
Owner:XIUYAN SHUNDA PNEUMATIC TRANSMISSION EQUIP MANUFACTORY

Seamless embroidery wall fabric and production method thereof

The invention belongs to the technical field of facing decoration materials and particularly relates to a seamless embroidery wall fabric which has a simple sticking method, strong artistry and low possibility of crinkling after being pasted with a wall surface. The seamless embroidery wall fabric comprises embroidery traycloth with embroidery patterns, wherein a wall paper base paper layer is bonded on the back side of the embroidery traycloth by an EVA (Ethylene Vinyl Acetate Copolymer) adhesive film layer. The invention also discloses a production method of the seamless embroidery wall fabric. According to the production method, the produced seamless embroidery wall fabric is full of exquisite embroidery patterns, width wall fabric products can be obtained and the defects that the wall fabric produced by a traditional method is not high in artistry, easy to crinkle and can be only produced into narrow products are overcome.
Owner:ZHEJIANG LIANXIANG EMBROIDERY CO LTD

Attack defense training method based on generative adversarial network

The invention provides an anti-attack defense training method based on a generative adversarial network, and the method comprises the steps: S1, carrying out the class definition of real sample imagedata xreal, and carrying out the standardization processing; s2, establishing a defense training framework; s3, generating random noise Z and generating a random condition vector Cfake; s4, inputtingthe random noise Z and the random condition vector Cfake into a generator in a defense training framework; s5, inputting the standardized real sample image data and the category creal of the standardized real sample image data into an attack algorithm library; s6, performing defense training on the defense training framework, and storing trained defense training framework parameters; and S7, completing training, abandoning the generator and the attack algorithm library, and reserving the discriminator. According to the method provided by the invention, the defect that the workload is increasedwhen an additional network is used in a traditional method for attack defense training is overcome, and the method provided by the invention has relatively high robustness.
Owner:星汉智能科技股份有限公司

Intelligent digital X ray exposure control device and method

The invention provides an intelligent digital X ray exposure control device and method. The device includes a double-camera automatic calibration module, a double-camera target thickness chart reestablishing module, an input parameter standardizing module, an interest area extraction module based on photographed parts, an image error correcting module based on the photographed parts, a sample settraining module based on the photographed parts and an exposure parameter estimation module based on the photographed parts. According to the intelligent digital X ray exposure control device and method, appropriate exposure parameters can be selected intelligently according to the patient information and the actual thickness of the photographed parts. Not only can the imaging quality be ensured,but unnecessary radiation dosage likely to be performed on patients can be reduced, and moreover, a neural network can constantly learn new illness cases during usage to perfect the exposure control effect. During clinical usage, the intelligent digital X ray exposure control device does not rely on clinical experience of technicians and is convenient to operate without limits, and therefore the device is an ideal automatic exposure control system.
Owner:HEDY MEDICAL DEVICE CO LTD

Multi-channel cocurrent flow microfluidic chip and controllable spinning method for linear multi-phase heterostructure fiber based on same

The invention provides a multi-channel cocurrent flow microfluidic chip. The chip is composed of a plurality of bypass capillary tubes and a confluence capillary tube, different spinning solutions flow through the bypass capillary tubes independently in a hydrogel wet spinning process or static spinning process, and the spinning solutions flowing out of the bypass capillary tubes are converged through the confluence capillary tube. One end of each bypass capillary tube is embedded into the confluence capillary tube to be fixed from one port of the confluence capillary tube by the same depth, and the inserting port of the confluence capillary tube is sealed. The other end of each bypass capillary tube is the inlet of the whole multi-channel cocurrent flow microfluidic chip, and the other end of the confluence capillary tube is the outlet of the whole multi-channel cocurrent flow microfluidic chip. The invention further provides a controllable spinning method for linear multi-phase heterostructure fiber based on the multi-channel cocurrent flow microfluidic chip. The technological difficulty and cost of the microfluidic chip can be lowered, the practicability and durability are improved, and various linear multi-phase heterostructure micro-nano fibers can be continuously, rapidly and conveniently manufactured.
Owner:SICHUAN UNIV

Dynamic key command sequence birthmark-based software plagiarism detecting method

The invention provides a dynamic key command sequence birthmark-based software plagiarism detecting method, which comprises the steps of (1) monitoring a program to be analyzed based on a dynamic instrumentation and identifying and recording a key command by combining with dynamic stain analysis in real time; (2), preprocessing the recorded key command sequence, stripping an operation number and extracting a mnemonic sequence; (3) on the basis, respectively generating a dynamic key command sequence birthmark for two software to be detected; (4) calculating the similarity of the birthmarks; (5) making the design of plagiarism or not by the average value of the similarity of the birthmarks and a given threshold value. The dynamic key command sequence birthmark-based software plagiarism detecting method directly aims at the binary codes without the need of existence of source codes and has more practical significance; the detection means does not depend on a specific platform or programming language, has wider application range and has better resistance to the code obfuscation technology with reversed semantics, so the detection capability of deep plagiarism is improved.
Owner:XI AN JIAOTONG UNIV

Sealing bottle plug

The invention discloses a sealing bottle plug. An expansion mechanism is arranged in an inner cavity of an elastic plunger body of the bottle plug. Four circumferentially-arranged supporting arms are arranged on a drive disc of the expansion mechanism. Jacking parts of the supporting arms surround the inner circumferential wall of the elastic plunger body and abut against the inner circumferential wall. When a rotary handle of a rotating mechanism drives the drive disc to rotate, the supporting arms expand and shrink radially to drive the elastic plunger body to shrink and expand radially at the unequal amount; in order to lock the expansion diameter of the elastic plunger body, a locking disc on the rotary handle is moved downwards to be clamped with a locking hole, and meanwhile, a conic control column pushes two clamping hooks of a clamping component to shrink towards each other, so that a bottle opening is clamped, and the bottle opening is sealed and clamped. By the adoption of the sealing bottle plug, according to bottle bodies of different calibers, the bottle plug is adjusted to be matched with bottle openings, the sealing performance is high, reuse is achieved, and practicality is high.
Owner:刘婷婷

Method for supporting multi-platform multi-terminal multi-language kind translation based on multi-media

InactiveCN101105791AAccurate translationRealize the purpose of multilingual mutual translationSpecial data processing applicationsParaphraseMulti language
The invention relates to a multimedia-based, multi-platform, multi-terminal, and multi-language translation method with high translation accuracy. The invention includes the following steps: (1) information classification and recording; (2) client terminals, after system initialization, can be used to select the language environment suitable for themselves. The language, called Language A, can be clicked to enter the interface; (3) the client terminals select the target language B in the suitable language environment; (4) information searching; (5) the client terminals can continue to select the target language C according to the multimedia information. The server terminals, according to the multimedia information, search the corresponding pronunciation and paraphrase of language C in the multi-language meaning database, and send the result to the client terminal through analysis program, thus completing the multi-language translation from Language A to Language B, and then to Language C based on multimedia. The invention can, with multimedia information as the medium for the multilingual translation, directly reveal the meaning of sentences to achieve the translation accuracy of information interactivity among multiple languages.
Owner:北京唐风汉语教育科技有限公司

Squeeze film damper for transmission shafting

The invention relates to a squeeze film damper for a transmission shafting, which comprises a shaft, wherein the external circumference of the shaft is sleeved by an inner damper ring with a groove in the circumference, an outer damper ring is arranged in the groove in the circumference of the inner damper ring, an oil chamber is formed between the outer damper ring and the inner damper ring, lubricant oil is placed in the oil chamber; both ends of the oil chamber are sealed by seal rings; and a notch of the groove of the inner damper ring is connected with both end faces of the outer damper ring through connecting pieces. The squeeze film damper is simple in structure, an independent mechanism is adopted to realize the damper, the squeeze film damper is convenient in fabrication and installation, can be arranged at any position in the shafting, and has a good damping effect, and the installation and operation of the squeeze film damper are not limited.
Owner:中国船舶重工集团公司第七〇二研究所

Liquid flow non-magnetic detector and detection method thereof

The invention relates to a liquid flow non-magnetic detector and a detection method thereof. The detector comprises a microprocessor unit, a power supply control circuit and an excitation control circuit which are connected with the microprocessor unit, and an LC oscillating circuit, an LC oscillating detection circuit, an envelope detection circuit and a trigger circuit which are connected in sequence, wherein the output ends of the power supply control circuit and the excitation control circuit are respectively connected with two ends of the LC oscillating circuit, and the trigger circuit is connected with a timer capture input end of the microprocessor unit. The LC oscillating circuit is located above an impeller comprising an insulating area and a conducting area. The detection method comprises the steps that an oscillating wave output by the LC oscillating circuit is processed by the LC oscillating detection circuit, the envelope detection circuit and the trigger circuit and then is subjected to timer capture by the microprocessor unit, the position changes of the conducting area and the insulating area of the impeller are judged, and finally liquid flow is calculated. The measuring distance is larger, the application range is wide, the singlechip microcomputer selection limitation is less, the cost is reduced, and the universality is good.
Owner:杭州绿鲸科技有限公司

Magnetic particulate chemiluminescent micro-fluidic chip for quantitatively detecting myohemoglobin

The invention discloses a magnetic particulate chemiluminescent micro-fluidic chip for quantitatively detecting myohemoglobin. The structure of the magnetic particulate chemiluminescent micro-fluidic chip mainly comprises a cover piece (1) and a bottom piece (11), wherein an air pump (3), an airflow micro-channel (5), a sample feeding hole (2), a sample liquid flowing channel (6), a first biological marker storage tank (4), a micro-mixer (7) and a transition region (10) on the cover piece (1) are connected in sequence; a filter (12), a reaction tank (13), a washing tank (14), a detection tank (15) and a solution releasing channel (18) on the bottom piece (11) are connected in sequence; the detection tank (15) on the bottom piece (11) is connected with a washing liquid storage tank (16) and a luminescent liquid storage tank (17) through the solution releasing channel (18).
Owner:SHENZHEN HUAMAIXINGWEI MEDICAL TECH CO LTD

Hydrogen refueling station network facility and hydrogen distribution type energy resource composed of same

A hydrogen refueling station network facility can inject hydrogen for hydrogen cell hydrogen storage cylinders in an area and forms a hydrogen distribution type energy resource together with hydrogen cells. The energy resources around a city are used for producing hydrogen through various hydrogen making methods. Energy resource conversion is realized through the procedures of pressurization, conveying, storage, air-entrapping and the like. A circular process including the procedures of hydrogen production, conveying with a gas storage cylinder set trailer, consumption of hydrogen cells, conveying with the gas storage cylinder set trailer and hydrogen production goes on all the time. The energy resource provided in the scheme does not use circuits of a power grid and is independent from the power grid, and the gas storage cylinder set trailer is used for supplying gas to the hydrogen cells as a movable pipeline. By means of the scheme, the greatest effect is that the city is changed into a hydrogen energy society, and zero emission is realized. If every city in China implements the scheme, China can develop into the hydrogen energy society soon, and great significance is achieved.
Owner:沈军

Web server attack filtering and comprehensive protecting method based on NDIS (Network Driver Interface Standard) drive

The invention provides a Web server attack filtering and comprehensive protecting method based on an NDIS (Network Driver Interface Standard) drive, comprising: the NDIS drive carries out the sieving of a Hyper Text Transport Protocol (HTTP) according to presetting, sieves an HTTP data packet meeting port demands from received data packets, and sends the data packet to a security detection service module operating at a user state; a security detection service module analyzes and detects the HTTP data packet, and sends a command of discarding unsafe HTTP data packets to the NDIS drive; and the NDIS drive discards the unsafe HTTP data packets. The method provided by the invention belongs to a software technology and has the advantages of low cost and high flexibility; and the technology realized by the invention is suitable for all Web server programs and has no limitation.
Owner:BEIJING HITEVISION INTELLIGENT SOLUTIONS CO LTD

Cleaning car

The present invention relates to a cleaning vehicle. The problems which are to be settled and exist as the background technique are as follows: inexhaustive cleaning in the cleaning process, larger pollution to the air by the reason on itself, large working noise, high oil consumption and a certain limitation to the ground being cleaned. The essential point of the technical scheme for settling the technical problem is arranging improved air suction device, storing device, cleaning device, suction into device and a safety device. The invention has the remarkable advantages of thorough cleaning, no air pollution, low oil consumption, small working noise, high automatization degree and no limitation to the ground being cleaned and the like.
Owner:宋春吉

Ice storage box assembly of ice maker and refrigerator

The invention relates to the technical field of refrigerators and discloses an ice storage box assembly of an ice maker. The ice storage box assembly comprises an ice storage box. The the ice storage box is provided with a rotating shaft and a separating mechanism are arranged. The outer end of the rotating shaft is provided with a rotating shaft connector. The rotating shaft connector is used for being connected with a transmission connector of an ice discharging motor. The separation mechanism is used for axially separating the transmission connector from the rotating shaft connector. The invention further discloses a refrigerator. The ice storage box can be conveniently demounted without damaging the connecting part of the ice discharging motor and the ice storage box, and in addition, the limitation of the fixed direction is avoided during demounting of the ice storage box.
Owner:HEFEI HUALING CO LTD +1

Full-automatic welding equipment

The invention discloses full-automatic welding equipment. Left and right connectors of a pipe and a trunk of the pipe are manually placed on a connector feeding mechanism and a feeding and discharging guide rail correspondingly, the left and right connectors of the pipe are grabbed by an industrial robot to a rotation welding mechanism, the trunk of the pipe is conveyed to the welding position through a chain, the rotation welding mechanism is provided with a clamping part and a servo motor, the left and right connectors of the pipe are clamped by the clamping part, and the two sides of the clamping part achieves packing and will achieve automatic positioning, the servo motor rotates to drive the left and right connectors of the pipe and the trunk of the pipe to rotate simultaneously; and a welding mechanism on the six-shaft industrial robot welds the connecting positions of the left and right connectors of the pipe and the trunk of the pipe, after welding is carried out, the welded pipe is conveyed out through discharging mechanisms on the other side of a left sliding table and the other side of a right sliding table to be conveyed to the lower layer of the feeding and discharging guide rail to be guided out, and the pipe automatically flows to an assembly line through an inclined rail. The full-automatic welding equipment is high in welding efficiency, free of limitation, stable in welding effect, good in coincidence and capable of welding truss pipes with multiple specifications, different lengths and multiple models in a full-automatic manner.
Owner:SHENZHEN YINUO JIYE TECH CO LTD

Password guessing method

ActiveCN109829289AGood guessEasy to guessDigital data authenticationData setTest set
The invention discloses a password guessing method and password guessing equipment. The method comprises the steps of preprocessing a data set, extracting password passwords in the data set to obtaina password set, dividing the password set i according to a preset proportion, and acquiring a training set and a test set; Constructing a hidden Markov model by using the training set to obtain a transition probability, an observation probability and an initial state probability; And calculating the use frequency of the password of each length in the training set to obtain user password length probability distribution, and generating a guessing password by using the transition probability, the observation probability, the initial state probability and the password length probability distribution. According to the invention, the password guessing is carried out by using the hidden Markov model; Based on the initial state probability, the conversion probability and the observation probability among the password characters, modes such as password character combination and sequence of a data set are mined and discovered, so that passwords are guessed better, the guessing of the passwordsdoes not need personal information of users, and the guessing method is simple and free of limitation.
Owner:CHINA ACADEMY OF ELECTRONICS & INFORMATION TECH OF CETC

Method and system for carrying out processing on environment prediction factor data of typhoon intensity

The invention, which belongs to the technical field of typhoon intensity processing, especially relates to a method and system for carrying out processing on environment prediction factor data of a typhoon intensity. The method comprises: step a, selecting an environment prediction factor correlated with a typhoon intensity change, and calculating and extracting parameter data correlated with the environment prediction factor; and step b, carrying out standardization processing on the parameter data of the environment prediction factor and carrying out principal component analysis processing on the parameter data after the standardization processing, thereby obtaining new environment prediction factor parameter data. According to the invention, repeatability and inner links of all environment prediction factors are considered fully and are eliminated by using the principal component analysis method, so that the accuracy of the typhoon intensity prediction is improved. The method and system are suitable for sample data processing of various typhoon types.
Owner:SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI +1

Optical element and production device for producing same

A lens (101) produced from a radial rays-curing material comprises a lens proper portion (102) that serves as an optically effective part of the lens (101), and a circular flange portion (103) that surrounds the lens proper portion (102) and serves as an optically non-effective part of the lens (101). The circular flange portion (103) has front and rear surfaces (103a, 103b) that are different in appearance.
Owner:SONY CORP

Printed and embroidered seamless wall fabric and manufacturing method thereof

The invention belongs to the technical field of facing decoration materials and particularly relates to printed and embroidered seamless wall fabric and a manufacturing method thereof. The wall fabric comprises a cloth layer, a glue film layer and a raw paper layer or non-woven layer, wherein the glue film layer is located between the cloth layer and the raw paper layer; the surface, making contact with the glue film layer, of the cloth layer is a smooth surface, and the other surface of the cloth layer is provided with printed patterns; and embroidered patterns are arranged on the cloth layer, and the cloth layer is soaked or coated with a waterproof and mouldproof agent. The wall fabric is formed by conducting printing and embroidering on base cloth and then conducting shaping. The wall fabric manufactured through the manufacturing method has the advantages of being easy to stick, not prone to wrinkles, various in style and long in service life.
Owner:ZHEJIANG LIANXIANG EMBROIDERY CO LTD

Plant type environmental protection wall paper and manufacturing method thereof

The invention discloses plant type environment-friendly wallpaper and a method for manufacturing the wallpaper and the plant type environment-friendly wallpaper comprises a backing layer and a plant layer which is adhered on the surface of the backing layer and is weaved with lathlike plant products. The plant type environment-friendly wallpaper of the invention has very wide material sources, the cost is low, the wallpaper has the advantages of green environmental protection and good product permeability, simultaneously, the wallpaper has good sound absorption effect, and the manufacturing process of the wallpaper of the invention is comparatively simple and only needs slightly reforming a traditional old-style knitting machine to produce.
Owner:CHONGQING HANFEI SCI & TECH DEVCO

Method, device and system for discovering network equipment

The invention provides a method, device and system for discovering network equipment. The method comprises the steps of: enumerating equipment IP addresses to be scanned in a target network; broadcasting one target address as a first ARP request message of the equipment IP addresses to be scanned; when the scanned IP addresses exist in an ARP cache of detection equipment, storing the IP addresses and corresponding MAC addresses; and after scanning on all the IP addresses to be scanned in the target network is completed, reporting the stored IP addresses and the MAC addresses thereof to a server. According to the method, device and system provided by the invention, detection efficiency of equipment detection can be improved.
Owner:ZHEJIANG YUANWANG INFORMATION CO LTD

License plate positioning method

Provided in the invention is a license plate positioning method. The method comprises: a shooting device carries out triggered shooting on a license plate by a trigger; an image shot by the shooting device is transmitted to a license plate positioning system by a network, and the license plate positioning system carries out pretreatment on the image processed by the last step to obtain a license plate area image; the license plate positioning system carries out license plate positioning processing on the license plate area image; and inclination correction processing is carried out on the processed license plate area. According to the invention, the accuracy of license plate positioning and the operation speed of the license plate positioning system are improved.
Owner:江文得

A distribution network operation risk sensing method and device

The invention provides a distribution network operation risk sensing method and device, which firstly carries out ultra-short-term load forecasting and distribution network state estimation. Determinethe evaluation index value of each distribution network in the distribution network evaluation index system; perceiving the risk of distribution network operation, the perceived results can provide the basis for operators to find out the causes and sources of the risk, without limitation and with high accuracy, which can provide a reliable basis for the formulation of risk prevention and controlmeasures; the invention can effectively reduce the influence of the measurement error and the measurement bad data on the real-time operation situation assessment result of the distribution network, give the overall perception result of the operation risk of the distribution network, quantify the real-time operation state of the distribution network, and provide important technical and data support for the operation control of the distribution network. The invention more accords with the characteristics of the dynamic state estimation algorithm of the power system, reduces the calculation timeof the state estimation, and improves the calculation precision of the state estimation.
Owner:CHINA ELECTRIC POWER RES INST +2

Fracturing fluid friction resistance testing device and method

The invention discloses a fracturing fluid friction resistance testing device and method.The device comprises a material supply device and M friction resistance testing channels.The fluid outlet of the material supply device is connected with the first port of each friction resistance testing channel through an input pipeline.The second port of each friction resistance testing channel is connected into the material supply device through an output pipeline.The first port of each friction resistance testing channel is provided with a front pressure transmitter, a front adjustable flow valve and a flow meter.The second port of each friction resistance testing channel is provided with a rear pressure transmitter and a rear adjustable flow valve.The M friction resistance testing channels include at least one horizontal circular channel, at least one spiral circular channel, at least one horizontal fracture channel, at least one S-shaped fracture channel and at least one square wave type fracture channel which are connected in parallel.Therefore, the technical problem that in the prior art, the underground space internal fracturing fluid friction resistance theory is lack of reliable indoor data is solved, and fracturing efficiency can be easily improved.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)

Chicken egg-yolk antibody capable of resisting influenza virus and preparation method thereof

The invention discloses a chicken egg-yolk antibody capable of resisting influenza virus. The chicken egg-yolk antibody is used for specifically resisting tetravalence influenza virus. The influenza virus includes influenza A virus subtype H1N1, influenza A virus subtype H3N2, influenza B virus subtype Victoria series and influenza A virus subtype Yamagata series. The preparation method of the chicken egg-yolk antibody comprises the following steps of 1, preparing a tetravalence influenza virus antigen; 2, performing immunity on hens; 3, collecting immunized eggs laid by the immunized hens; 4, preparing a mixed antibody stock solution from the immunized eggs; 5, detecting titer of the antibody stock solution, and a stabilizer is added cooperatively, so that the chicken egg-yolk antibody capable of resisting tetravalence influenza virus is obtained. The chicken egg-yolk antibody can be combined with the tetravalence influenza virus specificity pathogen for a short period of time, the tetravalence influenza virus can be effectively killed for a long period of time, the safety performance is good, no toxic or side effect is generated, and the chicken egg-yolk antibody can be effectively used for preventing pathogen corresponding to human pharyngeal and nasopharynx mucosas.
Owner:CHENGDU ANTIK BIOTECH CO LTD

Absolute position miniature grating encoder readhead using fiber optic receiver channels

An absolute position fiber optic encoder readhead having multiple readhead portions for sensing the displacement of respective scale grating tracks of a scale is disclosed. The detector channels of the readhead portions are fiber optic detector channels having respective phase grating masks. The fiber optic encoder readhead portions are configured to detect the displacement of a self-image of a respective scale grating track of the scale. In various exemplary embodiments, the fiber optic readhead portions are constructed according to various design relationships that provide a relatively high signal-to-noise ratio. Accordingly, high levels of displacement signal interpolation may be achieved, allowing submicrometer displacement measurements. The fiber optic encoder readhead portions may be assembled in a particularly accurate and economical manner and may be provided in a package with dimensions on the order of 1-2 millimeters, resulting in a very small overall absolute readhead dimension that is dependent on the number of readhead portions that are incorporated. Optical fiber receiver channels carrying binary optical signals derived from a scale code track may be provided in the readhead, to provide an extended absolute measurement range.
Owner:MITUTOYO CORP

Method and device for acquiring movement speed of user equipment

The invention discloses a method and device for acquiring movement speed of user equipment, and relates to the field of wireless communication. By the adoption of the method and device, the movement speed of the user equipment can be acquired in different channel scenes. The method for acquiring the movement speed of the user equipment includes the steps that a first distance and a second distance respectively between the user equipment and a first measuring base station and between the user equipment and a second measuring base station are acquired; after a first time interval, a third distance and a fourth distance respectively between the user equipment and the first measuring base station and between the user equipment and the second measuring base station are acquired; plane geometric calculation is conduced according to the distance between the first measuring base station and the second measuring base station, the first distance, the second distance, the third distance and the fourth distance to obtain a movement distance of the user equipment; calculation is conducted according the first time interval and the movement distance to obtain the movement speed of the user equipment. The method and device for acquiring the movement speed of the user equipment is mainly applied to the process of acquiring the movement speed of the user equipment.
Owner:HUAWEI TECH CO LTD
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