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356results about How to "Improve operational accuracy" patented technology

Primary synchronization signal detection method in LTE system

The primary synchronization signal detection method in an LTE system. The method comprises the following steps: converting cross-correlation process to linear convolution, converting the linear convolution into circular convolution in a zero filling mode, and performing Fourier transform FFT operation to obtain a primary synchronization signal PSS sequence dmf(n) in a local frequency domain; performing the Fourier transform FFT operation on a received signal sequence, and performing point-to-point multiplication on the received signal sequence and the local primary synchronization signal PSS sequence to obtain a cross-correlation power sequence, judging whether the primary synchronization signal PSS is successfully retrieved by judging the peak to average ratio of the cross-correlation power sequence, and if so, calculating a PSS signal position according to the peak position, and calculating a call intra-group identifier; and otherwise, indicating that the retrieval is failed. The primary synchronization signal detection method has the beneficial effects of reducing the complexity of the cross-correlation operation while keeping the wide adaptability of the cross-correlation operation in PSS synchronization, improving the operation accuracy while reducing the single-step operation data size and improving the operation efficiency and accuracy.
Owner:重庆华沐网络科技有限公司

Intelligent substation and regulation and control center coordinative modeling method

The invention discloses an intelligent substation and regulation and control center coordinative modeling method, comprising: standardizing the function of a system configuration tool of a substation automatic system; standardizing and expanding device and signal descriptions in an SCD (Substation Configuration Description) file; expanding a measurement model in a CIM / E (Common Information Model / E language) file; making mapping rules of IEC 61850 and IEC 61970 models; by reference to requirements of relay protection information standards and monitor system information standards, performing classified management on the information; automatically exporting the CIM / E file required by a regulation and control center on the side of an intelligent substation by using the system configuration tool, and performing checking; and providing the CIM / E model file for the regulation and control center in an offline or online manner and executing model splicing and storage processing. According to the method, the mapping and conversion from the 61850 model to the 61970 model are finished, the model and information sharing is realized, the model maintenance workload of the regulation and control center is reduced, and the working efficiency is improved.
Owner:STATE GRID TIANJIN ELECTRIC POWER +1

Two dimensional material transverse heterojunction, and preparation and application of the same

The invention discloses a preparation method of a two dimensional material transverse heterojunction. The preparation method of a two dimensional material transverse heterojunction includes the following steps: (a), taking material A powder as the original materials, performing vapour deposition on the surface of a substrate, and forming a nanometer sheet of the material A; and (b), heating the powder of the material B1 to the growth temperature under the reverse carrier gas flow, wherein the powder of the material B1 are horizontally growing along the rim of the nanometer sheet of the material A under the positive carrier gas flow, growing in the horizontal direction, and after completion of growing, the reverse carrying gas flow is imported again to prepare a two dimensional material transverse heterojunction A-B1. The invention also provides the two dimensional material transverse heterojunction prepared by the preparation method, and application of the preparation method in preparation of photoelectric devices. The related heterojunction prepared by the preparation method of a two dimensional material transverse heterojunction has the advantages of being smooth in the atomic layer, being steep and flat in the heterojunction boundary line, almost having no doping, and being excellent in optical and electrical properties of the material. The preparation method of a two dimensional material transverse heterojunction greatly simplifies the preparation method of the two dimensional material transverse heterojunction, and controllability of material preparation and the preparation efficiency are greatly improved.
Owner:HUNAN UNIV

Screen recording, screen-based reproduction method, terminal

The invention discloses a recording screen, a reproduction method based on the recording screen and a terminal. The recording screen method comprises the following steps: when recording the screen, generating the video coding information of the screen; Determining operation information corresponding to the touch operation when a touch operation to the screen is detected; According to the video encoding information and operation information, acquiring a recording screen file, and the recording screen file contains the video encoding information and the operation information. At that time of record the screen, while generating video encoded information, recording the operation information corresponding to the touch operation received during the recording process, obtaining a recording screenfile containing video encoding information and operation information, Thus, when the second terminal acquires the screen recording file and performs scene reproduction, intelligently recognizing theoperation information contained in the screen recording file, and automatically performing the scene reproduction according to the operation information, and the user does not need to repeatedly viewthe screen recording file and perform manual reproduction, so that the user operation can be reduced, and the user experience can be improved.
Owner:VIVO MOBILE COMM CO LTD

Movable mechanical arm control system and method based on MR and motion planning technology

The invention discloses a movable mechanical arm control system and method based on MR and motion planning technology. The movable mechanical arm control system is composed of a movable platform, a mechanical arm assembly, a depth camera, a power management system, an MR display device, a posture capturing device, an MR force feedback device and a background industrial personal computer. The control method comprises the steps that 3D information of a dangerous environment is shown before an operator through the virtual technology, the operator controls a mechanical arm on the site through a simulation arm with the MR force feedback device, the MR display device reconstructs the site disposal situation through the virtual technology, and the operator can have immersive third dimension. According to the movable mechanical arm control system and method based on the MR and motion planning technology, traditional remote control type mechanical arm control is changed into interactive intelligent control, the beneficial effects that using is more flexible, the site environment is truly simulated, the remote control experience is extremely good, and operation precision and accuracy degreeare high are achieved, the movable mechanical arm control system and method based on the MR and motion planning technology are used for detecting and grabbing tasks in the dangerous environment, and the operator is thoroughly liberated from the dangerous environment.
Owner:苏州融萃特种机器人有限公司

Full-automatic production equipment based on stem guide wire shaping and LED light strip welding integration

ActiveCN105345470AFacilitate automated processing operationsEasy to operateOther manufacturing equipments/toolsCircular discReduction drive
The invention discloses full-automatic production equipment based on stem guide wire shaping and LED light strip welding integration. The full-automatic production equipment comprises a main bottom plate, a platen and an upper bracket, wherein the upper end of the main bottom plate supports the platen through four thick bracket legs. A discharging mechanism and a buffering conveying mechanism are arranged on the left and the right of the side surface of the platen respectively, and a feed mechanism is arranged at the end of the buffering conveying mechanism. The platen is provided with a gap divider. An index plate rotates anticlockwise and is provided with a stem clamp. The main bottom plate is provided with a speed reducer, a station main shaft and a cam mechanism. A stem locating mechanism, a long foot arranging mechanism, a short foot poking mechanism, a 45-degree long foot poking assembly mechanism, a 45-degree short foot poking assembly mechanism, a foot straightening mechanism, an LED light strip shearing and conveying mechanism, an automatic LED light strip rotating and conveying mechanism and a welding mechanism are sequentially arranged on the platen from the front end of the feed mechanism and surround the index plate. The full-automatic production equipment is high in automation degree, high in welding and shaping efficiency and high in shaping accuracy.
Owner:南通睿博电器有限公司

Method for detecting migration quantity of nipagin ester substances in plastic food package bag

InactiveCN102879510AFill in technical gaps in testingFill technology gapsComponent separationWater basedDistilled water
The invention provides a method for detecting the migration quantity of nipagin ester substances in a plastic food package bag. The method comprises the following steps of: making the plastic bag of the size of 10*10 cm<2> by a plastic sample to be detected through a plastic sealing machine, washing the plastic bag by using distilled water, and drying; respectively putting water-based food simulation liquid and olive oil into the plastic bags, and sealing to obtain a water-based food simulation liquid immersed solution and an olive oil immersed solution; performing simple treatment on the obtained immersed solutions to obtain solutions to be detected; performing analysis detection on the solutions to be detected by adopting high performance liquid chromatography (HPLC)/mass spectrum (MS)/mass spectrum (MS) to obtain theoretical measured values of the nipagin ester substances in the samples to be detected; and deducing blank values from the theoretical measured values to obtain actual measured values of the nipagin ester substances in the immersed solutions of the samples to be detected. By the method, the technical blank of detection for the nipagin ester substances in the plastic food package bag in China is filled; and the method has the characteristics of simplicity in operation and high detection accuracy.
Owner:INSPECTION & QUARANTINE TECH CENT OF FUJIAN ENTRY EXIT INSPECTION & QUARANTINE BUREAU

Implementation method of province, city and county integrated relay protection setting calculation overall-process management system

The invention provides an implementation method of a province, city and county integrated relay protection setting calculation overall-process management system. The system comprises an engineering management module (1), an electrical equipment parameter management module (2), a drawing list management module (3), a boundary surface equivalent impedance management module (4), a boundary protection fixed-value quota management module (5), a transformer neutral point management module (6), a parameter calculation sheet management module (7), a circuit actual measurement parameter management module (8), a process engine (9), a fixed-value setting management system (10), a setting calculation sheet management module (11), a debugging report form management module (12), a report form amendment management module (13), a report form management module (14), a short message notification management module (15), an electronic seal (16) and a report form generator (17). The invention provides a richer data showing means; the workloads of full-time staff for setting calculation are greatly reduced; the working efficiency and the economic benefit are increased; and paperless, informationized and standardized process closed-loop management on the whole process of relay protection setting calculation is realized.
Owner:YUNNAN POWER GRID CORP TONGFANG TECHCO

Interaction method and interaction device based on lip language

The invention discloses an interaction method and an interaction device based on a lip language. The interaction method comprises the following steps of obtaining the depth image, the infrared image and the color image of a target human body object; obtaining the lip part area images of the target human body object from the depth image, the infrared image and the color image respectively; extracting lip part characteristics from the lip part area images, carrying out fusion treatment on lip part characteristics extracted from the depth image, the infrared image and the color image, and then carrying out lip language recognition; converting the result of the lip language recognition into a corresponding operating command, and carrying out interaction according to the operating command. Through the way, relative to a way of conventionally directly obtaining image information through a color camera, the interaction method and the interaction device are difficultly influenced by an environment such as the intensity of a light ray; the hit rate of image recognition can be effectively improved; the hit rate of the lip language recognition is improved; the hit rate of the lip language recognition is further improved; finally, the execution rate and the operation accuracy of the interaction can be effectively ameliorated.
Owner:SHENZHEN ORBBEC CO LTD

High performance liquid chromatography determination method of tetracycline antibiotic in soil

InactiveCN102401818AEasy to separateReduced vacuum drying stepsComponent separationElutionSolid phase extraction
The invention relates to an environmental analysis detection method, and specifically, relates to a high performance liquid chromatography determination method of tetracycline antibiotic in soil. The high performance liquid chromatography determination method of tetracycline antibiotic in soil comprises the following steps of 1, a sample collecting and preparation process comprising collecting soil in a plough layer having thickness of 0 to 20 centimeters, wherein soil in a composting place and field edges is not adopted, uniformly mixing multiple single-point samples, carrying out quarteringreduction to obtain a mixed soil sample having weight of about 1kg, putting the mixed soil sample into a sealing bag, bringing the sealing bag with the mixed soil sample back with low-temperature preservation in the dark, putting the mixed soil sample into a room, drying in air, crushing, screening by a nylon sieve of 60 meshes, and weighing 2g of the mixed soil sample for next use, 2, an extractpreparation process, 3, an extraction, purification and enrichment process, and 4, an elution, volume metering and detection process. The high performance liquid chromatography determination method of tetracycline antibiotic in soil has normalized processes, reduces a vacuum drying process, produces low jamming, shortens operation time and improves operation accuracy. Through connection between astrong anion solid phase extraction column and a C18 inverted solid phase extraction column in series, purification and enrichment effects are greatly improved.
Owner:SICHUAN AGRI UNIV

Cast-in-place pile overfilling monitoring device and using method thereof

ActiveCN106759537AGuaranteed effective perfusion heightReduce wasteFoundation testingEngineeringWater content
The invention relates to a cast-in-place pile overfilling monitoring device. The device comprises an equipment bracket, a monitoring sensor, an alarm assembly and a center control host; the monitoring sensor is used for achieving conducting real-time monitoring on a concrete spouting height; the alarm assembly is fixedly arranged on the equipment bracket, electrically connected to the monitoring sensor and used for feeding back monitoring results of the monitoring sensor; the monitoring sensor is connected to the equipment bracket with the help of a connecting assembly arranged on the equipment bracket; the center control host is fixedly arranged on the equipment bracket, in signal connection to the monitoring sensor and the alarm assembly and used for achieving signal transfer between the monitoring sensor and the alarm assembly. Through the cast-in-place pile overfilling monitoring device, the water content of different liquids can be detected through the sensor, accordingly whether concrete reaches a set scale height or not is judged, and after the concrete reaches the set scale height, an alarm is given timely. In this way, not only is the valid spouting height of a cast-in-place pile ensured, but also the overfilling amount is reduced to the greatest extent, and the subsequent chiseling and removing difficulty is lowered.
Owner:JIANGSU CSSIOT TECH CO LTD

Position locking mechanism of three-position isolating switch

The invention discloses a position locking mechanism of a three-position isolating switch. The position locking mechanism comprises an isolating switch main shaft and an operation panel fixed on an isolating switch frame, the isolating switch main shaft and a handle drive shaft are mounted in a nested manner and can move axially relative to each other, the handle drive shaft is equipped with a handle that can drive the handle drive shaft to rotate synchronously with the isolating switch main shaft, an inner side of the operation panel is provided with a locating pin, the isolating switch main shaft is fixedly equipped with a position-limiting sleeve located at an inner side of the operation panel, a front end face of the position-limiting sleeve is provided with a position-limiting groove, and a compression spring is mounted between a rear end face of the position-limiting sleeve and a shaft end of the isolating switch main shaft. After adopting the abovementioned structure, when switching-closing operation is needed, the handle is rotated and position limiting can be performed through the locating pin and the locating sleeve, a misoperation phenomenon that occurs due to different operating force in the process of switching-closing operation is completely eradicated, and the position locking mechanism of the three-position isolating switch is simple in structure and very convenient to operate and use, and the operating accuracy and the use reliability are greatly improved.
Owner:ZHENJIANG DAQO SECHERON TRACTION POWER

Method and die for manufacturing glass polarizing lens

The invention discloses a method for manufacturing a glass polarizing light lens, and belongs to the field of lens manufacturing. The method comprises the first step of clamping a polarizing film and heating and humidifying the polarizing film until the polarizing film is softened, the second step of bonding the convex plane of a back glass thin sheet with one face of the polarizing film to enable the curve radian of the polarizing film to be consistent with the radian of the convex plane of the back glass thin sheet and removing dust on the surface of the polarizing film and bubbles between the polarizing film and the back glass thin sheet, the third step of bonding the concave plane of a front glass thin sheet with the other face of the polarizing film and removing the bubbles between the polarizing film and the front glass thin sheet, the fourth step of roasting and solidifying the glass polarizing lens, and the fifth step of cutting the unnecessary polarizing film and carrying out washing and testing. The invention further discloses a die for manufacturing the glass polarizing lens, the forming technology of the glass polarizing light lens is simplified, and the production efficiency and the finished product yield are improved; the special forming die is adopted, and the die is simple in structure, convenient to machine and manufacture and low in cost.
Owner:夏正华

Intelligent file storage system

The embodiment of the invention discloses an intelligent file storage system. The intelligent file storage system comprises an upper computer server, electronic seal table equipment and a storage cabinet array, a bar code and an RFID label are arranged on the surface of the article; the electronic seal table device scans the bar code, obtains the thickness of the article and sends the thickness tothe upper computer server, and the upper computer server determines an intelligent quick-detection storage cabinet used for storing the article and storage position information; the electronic seal table device writes the article information returned by the upper computer server into the RFID tag; the storage cabinet array is composed of a plurality of intelligent speed detection storage cabinets, the upper computer server sends an instruction to the intelligent speed detection storage cabinets, and the intelligent speed detection storage cabinets execute corresponding operation based on theinstruction and send operation result information for executing the operation to the upper computer server. According to the intelligent rapid detection storage cabinet, intelligent storage managementcan be carried out on articles, warehouse stocking, warehouse entering, warehouse exiting and other operations can be accurately executed, the operation accuracy is improved, and the operation time and cost are saved.
Owner:北京融安汇智科技有限公司

Explosive cladding explosive and preparation method and applications thereof

The present invention provides an explosive cladding explosive prepared from expanded ammonium nitrate explosive, calcium nitrate, graphite and magnesium stearate according to a certain ratio. The present invention also provides a method for preparing the explosive, and the method comprises weighing all raw materials and placing the raw materials in an automatic drug mixing machine to mix uniformly to obtain an explosive cladding explosive. Further, the present invention also provides a method for preparing explosive clad plates by using the explosive, and the method comprises: laying a clad plate on the top of a baseplate, and laying support columns between the clad plate and the baseplate; positioning an explosive frame on the clad plate, overlying the explosive inside the explosive frame, and placing a detonating primer on the explosive; and detonating the explosive by using the detonating primer to obtain the explosive clad plate. The explosive cladding explosive of the invention is good in formula design, simple in a blending method, low in cost, excellent in performance and anti-caking performance; and the explosive clad plate prepared by using the explosive cladding explosive of the invention has a high interlaminar bonding rate and high combination strength, and is for large-scale industrial production.
Owner:XIAN TIANLI CLAD METAL MATERIALS
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