52results about How to "High accuracy requirements" patented technology

The present invention relates to a method for karaoke scoring, the method comprises the following steps of: acquiring voices of a singer; performing a length comparison, a volume comparison and a tone comparison between the voices of the singer and voices of an original singer to obtain a comparison result; and scoring the sing of the singer according to the comparison result, then providing the score. The method in the present invention acquires the voices of the singer to perform the length comparison, the volume comparison and the tone comparison with the voices of the original singer, then obtains the comparison result and performs the scoring according to the comparison result, thereby greatly improving accuracy of the scoring, accurately and comprehensively scoring the sing of the singer, enhancing experience effects of the singer, and perfectly satisfying high accuracy requirement of the singer.

The invention provides an automatic detection method for a brake shoe borer loss fault of a railway wagon. Firstly, an area classifier, a positioning classifier and a fault judgment classifier are trained firstly; a brake shoe borer image to be tested is segmented through the area classifier, in the areas obtained after segmentation, a multi-level multiple-cascade-connection detection concept is adopted, a brake shoe borer is positioned through the positioning classifier, whether the brake shoe borer is lost or not is judged through the fault judgment classifier, and fully automatic detection on the brake shoe borer loss fault of the railway wagon is realized. By means of the automatic detection method for the brake shoe borer loss fault of the railway wagon, the fault detection rate reaches 99 percent, the detection speed reaches five frames/ second, and the actual application requirement is met.

The invention discloses a waveguide coupler with an echelon grating mirror which comprises a substrate, a buffer layer, a waveguide, a tapered waveguide, the echelon grating mirror and an optical fiber. A reflecting face of the echelon grating mirror is provided with echelon grating. The buffer layer is fixedly connected with the top face of the substrate. The waveguide, the tapered waveguide and the echelon grating mirror are fixedly connected with the top face of the buffer layer. The height of the tapered waveguide is equal to that of the waveguide. One end of the tapered waveguide is a narrow end, and the other end of the tapered waveguide is a wide end. The narrow end of the tapered waveguide is fixedly connected with an input end of the waveguide, and the wide end of the tapered waveguide is opposite to the reflecting face of the echelon grating mirror. The optical fiber is arranged vertically and arranged above the echelon grating mirror, and an output end of the optical fiber is opposite to the reflecting face of the echelon grating mirror. The waveguide coupler is capable of enabling the optic fiber and the waveguide to achieve high-efficiency coupling and provided with high alignment tolerance. Meanwhile, the invention further discloses a preparation method of the waveguide coupler. The preparation method is simple and compatible with a metal oxide semiconductor (MOS) technology.

The present invention adopts single-order plus dead-time model; said upper computer controlling output panel control board key to make systems operation on ' identifying stage ', at this point, the relay identifying link switched into closed loop system; under action of relay link, after beginning systems operation, at short notice establishing limit loop; according to real-time measurement to relay output each parameter and biasing relay feed-back identifying formulae to calculate out system identifying three parameters: K, Theta and Pi, and storing in RAM. According to identified model parameter, system calculates each parameter of novel internal mold controller, computational result stored in RAM memory unit, the obtained model and internal mold controller parameter loading in each link in real production process. The present invention realizes the self calibration of digit internal mold controller, reducing hardware cost and raising systematical mobility, reliability and accuracy.

The invention discloses a method and a system for searching relational complex management information system data in a natural language. The system comprises a natural language analysis module which carries out semantic analysis on search conditions input by a user according to a semantic analysis table, recognizes table names, attribute names and attribute values in the input conditions respectively, matches the attribute names and the attribute values according to rules, and completes logic recognition and combination of multiple conditions according to a matching result and set rules; a data query module which is used for processing the data analysis result according to the single-table association search logic and the hierarchical search logic, converting the processed query conditioninto an SQL query statement to execute query, and submitting the query result to the data security control module; a data security control module which realizes two levels of authority control; And asearch result display module which is used for submitting the data information to a user in the form of service information rather than pure form data. According to the system, the data availabilityis improved, and meanwhile, the data utilization rate is also increased.

The invention provides a method for positioning nodes of a wireless sensor network for maritime search and rescue. The method comprises the steps of calculating the initial positioning position information of a selected beacon node which is closest to the position of a target node and has the same movement state through maximum likelihood estimation positioning algorithm; correcting the initial positioning position information of the selected beacon node for the first time to obtain the position information of the selected beacon node after first correcting; correcting the coordinate error of the position information of the selected beacon node after first correction to obtain the final position of the selected bean node; correcting the initial positioning position information of the target node, calculated by the maximum likelihood estimation positioning algorithm according to the final position of the selected beacon node and the first correction and coordinate error correction results, so as to obtain the final position of the target node. The method is adapted to marine wireless sensor network with relatively high dynamics, and can provide real-time and accurate node position information.

The invention relates to the technical field of spacecraft autonomous navigation, in particular to a ground test signal control system for X-ray pulsar navigation. The control system comprises a database module, a time delay module, a pulsar numbering module, a period control module, a stable time module, a communication module, a static random access memory (SRAM) data temporary storage module, a FLASH data storage module, a digital-to-analogue conversion module, an address coding module, a low-pass filtering module, a power amplification module, a phase increment storage module, an addition module, a phase accumulation module and a peripheral equipment X-ray source. The control system is suitable for an X-ray pulsar navigation ground test verification system, and is used for ground semi-physical closed loop verification of relative key techniques of the X-ray pulsar navigation, such as calibration of a space X-ray probe, extraction of a pulse profile, measurement of pulse phases, confirmation of pulse arrival time, large-scale space-time basic standards and verification for navigation algorithm.

The invention relates to a network end signal emitting device of a time division-long term evolution (TD-LTE) system. The network end signal emitting device comprises a modulation carrier wave unit used for generating TD-LTE modulation carrier wave signals, wherein the output end of the modulation carrier wave unit is connected with the input end of a frequency mixing filtering unit used for generating radio frequency (RF) signals, the output end of the frequency mixing filtering unit is connected with the input end of a switch filtering amplification unit, the output end of the switch filtering amplification unit is connected with the input end of a program control attenuator unit through a fixed amplitude amplifying unit, and the output end of the program control attenuator unit is connected with the input end of a multi-path output matching unit used for outputting multiple paths of LTE signals. The multi-time frequency conversion can meet the output frequency range requirement of the signal output, the switch filter and the frequency fixing filtering are utilized, the low stray requirements of output signals are met, high-accuracy requirements of the signal output power can be met through a fixed amplitude loop, the signal output maximum power requirement is met through multi-stage amplification, and the low-power step and large-dynamic-range requirements are realized through the combination of the fixed amplitude amplification unit and the program control attenuator.

The invention discloses an intelligent detection method of sensing data exception under physical attacks of large-scale industrial sensing network information, and belongs to the field of sensor dataexception detection. The method comprises the the steps of standardizing sensor data; introducing an imaginary sensor, and carrying out data expansion on the standardized data; converting the one-dimensional sensor data into a two-dimensional data format; directly generating a grey-scale map from the two-dimensional data; classifying the converted pictures by using a convolutional neural network (CNN) classification algorithm; and expanding the number of sensors to the thousand-level or ten-thousand-level, and checking the expandability of an exception detection model and the application of the exception detection model in a large-scale industrial sensor network. Multiple simulation tests are carried out, and multiple evaluation indexes are adopted to compare the exception detection modelsbased on different algorithms. The method provided by the invention can solve the problem that the sensing data of the industrial sensor network has a complex relationship, meets the requirements ofreal-time performance and accuracy of the industrial network, and has good expansibility.

The invention provides an arc welding power source current double-closed-loop control method and belongs to the technical field related to arc welding power sources and current control. The control method includes that when an arc welding power source works, a current inner loop samples original side peak current of a transformer in each switch period and adjusts current of a main circuit in real time; a current outer loop with current feed-forward control controls output current of the arc welding power source, and when the arc welding power source works stably, a feed-forward compensation link does not work and only a PI adjuster participates in adjusting; when arc load changes, the feed-forward compensation link works to increase response speed of the output current. By using the control method, damage to the transformer and power devices caused by overcurrent of the main circuit is avoided, and current outer loop control with a current feed-forward link can adapt to changes of the arc load quicker. The arc welding power source current double-closed-loop control method is suitable for arc welding power sources with high requirements on current speed and accuracy.

The invention belongs to the field of frequency modulated continuous wave (FMCW) radar signal processing, and discloses a self-adaptive elimination method of an FMCW foreign matter detection radar leakage signal. The method comprises the following steps: (1) segmenting a continuous radar intermediate frequency digital signal into signal segments in a plurality of complete modulation periods; (2) performing phase-coherent accumulation on the signal segments in multiple periods; (3) performing digital filtering on the coherent signals; (4) performing FFT operation on the filtered signal, and calculating the length of a sliding window according to the spectrum peak frequency; (5) solving a sliding average value of the filtered signal to obtain a leakage signal, and temporarily storing the leakage signal; (6) resolving a beat signal according to the temporarily stored leakage signal to complete leakage elimination; (7) judging whether the mean value of the beat signals exceeds a thresholdvalue or not so as to determine whether to restart the process of resolving the leakage signals or not; and (8) using the beat signal for FOD detection through a window function. According to the invention, no additional hardware is needed, leakage signals can be adaptively eliminated in real time, and the radar can be supported to realize all-weather accurate foreign matter detection work.

The invention discloses a special pH measurement device for an electric generator inner cooling water system and a working method thereof. The device comprises a flowmeter, a conductivity flow cell, ahydrogen conductivity flow cell, a degassed hydrogen conductivity flow cell, a flow regulation valve, a multi-channel conductivity table, a PLC control panel, a color-changing cation exchange column,a carbon dioxide remover and an electric regeneration cation exchanger, wherein the flow regulation valve and the flowmeter are mounted on a sampling pipeline which is led out from a water outlet pipeline of the electric generator inner cooling water cooler, moreover, the flow regulation valve and the flowmeter, the conductivity flow cell, the electric regeneration cation exchanger, the color-changing cation exchange column, the hydrogen conductivity flow cell, the carbon dioxide remover and the degassed hydrogen conductivity flow cell are connected orderly according to a water flowing direction; the conductivity flow cell, the hydrogen conductivity flow cell and the degassed hydrogen conductivity flow cell are respectively connected with the multi-channel conductivity table, and the multi-channel conductivity table is connected with the PLC control panel. The device and the method provided by the invention have wide range of application, and can be used for both a stator cooling water system and a double-water inner cooling system.

The invention provides a satellite remote test system, which is characterized in that a remote test service platform tests a satellite according to a test instruction and a test flow sent by remote test terminal equipment, collects test parameters and sends the test parameters to the remote test terminal equipment; the remote test terminal equipment sends a test instruction to the remote test service platform, controls the test flow of the remote test service platform, interprets the test parameters of the remote test service platform, and positions and analyzes faults of the remote test service platform; front-end audio and video scheduling equipment is placed at the location of the satellite, back-end audio and video scheduling equipment is placed at the location of a tester, and the front-end audio and video scheduling equipment and the back-end audio and video scheduling equipment communicate with each other and are used for jointly completing cooperative control of the remote testservice platform and the remote test terminal equipment; a remote test network system provides a communication link between the remote test service platform and the remote test terminal equipment.

The invention discloses a metal plate surface detector, comprising a PC terminal which is also in connection with an image acquisition card; the image acquisition card is also in connection with a workpiece detection positioner, a CCD camera and a laser. A main conveyor belt is also arranged under the workpiece detection positioned, the CCD camera and the laser. The inlet of the main conveyor belt is also provided with a laser sensor; the side surface of the main conveyor belt is also provided with an auxiliary conveyor belt; the main conveyor belt and the auxiliary conveyor belt are in movable connection through a connecting piece. The bottom of the laser is provided with a pin hole filter, the bottom of which is successively provided with a beam expanding lens and a collimating lens. The metal plate surface detector can be adjusted according to the width of a metal plate, allowing the metal plate to move on an optimal path and to perform visual detection; in addition, the detection process can not damage the metal plate, prevent external stray light from influencing detection results, and guarantee final detection result accuracy.

The invention discloses a sludge treatment system and a sludge treatment method, belongs to the technical field of sewage treatment, and solves the problems that in the prior art, an operator needs tomonitor the sludge feeding and discharging processes of a conditioning tank and a plate frame machine in the whole process, and human resources are occupied. The sludge treatment method comprises thefollowing steps: acquiring the liquid level or stirring time parameter of sludge in a regulating tank; determining state information of each regulating tank according to the parameters; determining an identifier of the regulating tank entering the sludge feeding or discharging queuing sequence according to the state information; determining the identifier of the regulating tank with the highest priority in the sludge feeding or discharging queuing sequence; according to the determined identifier of the regulating tank with the highest priority, controlling the corresponding regulating tank tofeed sludge or discharge sludge; determining the identifier of a plate frame machine entering the dehydration queuing sequence; determining the identifier of a plate frame machine with the highest priority in the dehydration queuing sequence; and controlling sludge in the corresponding regulating tank to be pumped into the corresponding plate frame machines for dehydration. The sludge treatment system and method are suitable for treating sludge.

The invention relates to a firemen indoor evacuation path planning method based on an improved A* algorithm and belongs to the indoor path planning technology field. The method comprises the followingsteps of according to a distance between a firemen and an emergency exit, setting a maximum passable radius of the firemen, and establishing an actual cost function and an estimated cost function; establishing a heuristic search function according to the actual cost function and the estimated cost function; adding a weight to the heuristic search function according to an air breathing device usage time; normalizing the air breathing device usage time; taking normalized data as the weight and adding the data to the heuristic search function, dynamically adjusting and balancing selection of analgorithm on aspects of accuracy and directionality, and acquiring an A* algorithm formula under dynamic balancing. By using a dynamic balancing method taking air breathing device time as the weight,an evacuation planning route is dynamically updated in a planned route according to an actual usage condition, effectiveness of the route is ensured and simultaneously balancing and dynamic adjustmenton the aspects of the accuracy and the directionality of the route are performed.

The invention relates to a multi-view multi-scale lymph node false positive inhibition modeling method. The invention discloses a radiotherapy automatic plan design system and a construction method thereof, and relates to the field of radiotherapy plan systems, and the system comprises a plan design auxiliary contour generation module, a prescription setting module, a radiation field adding module, a deep neural network dose prediction module, and an optimization objective function generation and plan design module. The deep neural network dose prediction module is used for providing a reasonable dose design target for a reverse optimization process according to data obtained by the same disease type; after the deep neural network model is trained, the dose distribution condition of a radiotherapy patient can be quickly predicted within several minutes, and radiotherapy plan design is automatically carried out, so the working efficiency of a radiotherapy doctor is effectively improved, and the formulation of a radiotherapy scheme of the patient is accelerated.

The invention relates to a target gene enrichment library building method, which comprises: a phosphorylation step: modifying a phosphate group at the 5' end of a template molecule; an extension step: adding a first primer, modifying the 5' end of the first primer with a labeled molecule, annealing and extending in the target region of the template molecule to obtain a double-stranded target nucleotide, the double-stranded target nucleotide containing an extension chain obtained by extending the first primer of which the 5' end is modified with the labeled molecule; a first sequencing linker ligation step comprising ligation of a first sequencing linker to the double stranded target nucleotide sequence; an unlinking step: carrying out unlinking treatment on a product obtained in the previous step, and removing a first primer extension chain of which the 5' end is modified with a labeled molecule to obtain a template molecule connected with a first sequencing linker, namely a single-stranded target nucleotide molecule; a second sequencing joint connection step; and an amplification step: adding a second primer and a third primer, and carrying out PCR reaction to obtain a complete library. Library building and target gene enrichment are integrated into a whole, and the process is remarkably shortened.

The invention relates to the technical field of data burning. and provides a data burning method for camera equipment, burning equipment and a storage medium. The method comprises the following stepsof first, configuring a first data burning rule of an erasable programmable memory and generating a first mapping table of an erasable programmable memory according to the first data burning rule, obtaining a preset second mapping table for proofreading, comparing the first mapping table with the second mapping table, and if a comparison result is consistent, performing data burning on the erasable programmable memory by using data to be burnt. According to the invention, the high-accuracy requirement of the camera equipment on burning data can be ensured; accurate burning of various kinds ofdata such as automatic white balance is achieved, research and development personnel with uneven knowledge levels do not need to input too much manpower, financial resources and material resources forerror correction any more, burning errors are automatically recognized, the customer complaint problem caused by the burning errors is avoided, and the product yield is increased.

The invention discloses a machine vision inspection terminal for articles. The machine vision inspection terminal comprises a PC terminal, wherein an image collecting card is also connected to the PC terminal, and is also connected with a workpiece detection positioner, a CCD camera and an LED light source; a main conveyor belt is also arranged under the workpiece detection positioner, the CCD camera and the LED light source; a laser sensor is also arranged at an inlet of the main conveyor belt, an assistant conveyor belt is also arranged on the side surface of the main conveyor belt, and the main conveyor belt and the assistant conveyor belt are movably connected through connecting fittings. According to the machine vision inspection terminal disclosed by the invention, through the structure, the machine vision inspection terminal can be adjusted according to the width of each article, so that parts can move on the best path, and vision inspection can be performed. Therefore, requirements for improving the accuracy of automatically recognizing the articles of different sizes are met.

The invention provides an operation control method, an operation control system, a computer readable storage medium, a compression system and an air conditioner system, wherein the operation control method comprises the steps that operation parameters of a compressor are obtained, and the variable quantity of the operation parameters in the first duration is calculated; and according to the variable quantity of the operation parameters in the first duration, the compressed air quantity of the compressor is adjusted. According to the operation control method provided by the invention, the compressed air quantity of the compressor is adjusted based on the variation trend of the compressor with-liquid condition. Under the condition that the compressor with-liquid condition has a worsening trend, the compressor with-liquid condition is relieved in a compressed air quantity reduction mode, a higher precision requirement can be achieved, a misoperation condition is avoided, and stable operation of the compressor and the compression system is ensured.

The invention discloses a rolling bearing residual service life prediction method based on time-varying Kalman filtering, and the method can automatically match the characteristics of different degradation stages of a rolling bearing, and respectively builds time-varying Kalman filter models based on a linear function and a quadratic nonlinear function. The degeneration state of the bearing is adaptively judged according to the time-shifting window filtering relative error index factor, a Kalman filter is automatically switched to process monitoring data in different stages, and effective prediction of the remaining service life of the bearing is achieved.

The invention discloses a high precision lofting method for directive reference. The method comprises the following steps: arranging a reference control net; determining the center O of the equipment;and lofting the directive reference. The method can meet the demand on high precision and accuracy, and is short in consumed time and high in work efficiency. In the lofting process, reference can belofted precisely by means of a total station and relatively little auxiliary equipment. A lofting point is precisely projected to the ground by means of a self-dependent innovated forced centering point method, the precision can reach within 0.1 mm, and the method has huge promotional value.

The invention provides a general ledger-based supervision index configuration implementation method and device, a medium and equipment. The method comprises the steps of inputting general ledger basic index data; calculating to obtain an R index according to the general ledger basic index data and a calculation engine; according to the demand of the off-site supervision report and the R index, calculating to obtain a derived index of which the hierarchy is higher than the R index; obtaining different off-site supervision reports according to derived indexes of which the levels are higher than the R index; and performing consistent data submission on different off-site supervision reports. On the basis of the basic indexes, a set of R indexes is configured and generated according to 1104 off-site supervision requirements, and report filling is performed on the basis of the R indexes to meet the requirements of consistent submission calibers and high accuracy requirements. And when the index caliber changes, the effect can be taken in all related reports only by modifying the configuration, so that the submission pressure is greatly reduced.

The invention discloses a heat preservation heating system which comprises a transduction device and a container. The transduction device is provided with a main control system, a wireless electric energy transmitting module and a power supply. The container is provided with a terminal control system, a wireless electric energy receiving module and a heating module. The main control system is in communication connection with the terminal control system. According to the invention, wireless transmission and conversion of electric energy are realized through the wireless electric energy transmitting module and the wireless electric energy receiving module; compared with an existing wireless heating mode based on the eddy current effect, the provided mode is more stable, safer and more reliable; and in order to solve the problems that a heating device is poor in controllability, has no recognition system, can generate adverse effects on a heating body and the like through the eddy currenteffect, the system adopts wireless power transmission to provide electric energy, and then, utilizes a traditional electric heating mode for heating to realize functions of heat preservation and thelike.