75 results about "Continuation method" patented technology

Methods and systems are provided for forwarding a media streaming session from one node to another node while the session is in progress. A streaming server may store data sent between nodes in the session. When one node is forwarded to a new node, the stored data may be used to transition to the new node with little or no interruption in data sent between nodes in the session. A user interface may allow a user to set preferences and control other aspects of the session forwarding features.

The invention relates to a self-adapting method for filtering vehicle dynamic shaft load signal, aiming to effectively eliminate weighing error due to vehicle dynamic load and remarkably improve the vehicle weighing accuracy. The invention processes the original shaft load signal by zero phase offset and low-pass filtering, so as to eliminate white noise interference and inhibit phase distortion of the shaft load signal during low-pass filtering process. The invention also adopts optimized cut-off to the original weighing signal by searching average value of extreme points of shaft load signal, so as to better inhibit gravitation impulse interference in the weighing signal. Further, the invention decomposes the weighing signal by empirical mode decomposition method, meanwhile, adopts end point continuation method in empirical mode decomposition, so as to eliminate end effect, effectively inhibit the generation of false mode and make the decomposed result relatively true. The invention eliminates low-frequency interference through empirical mode decomposition, so as to obtain true shaft load signal.

The invention relates to an environmental friendly method for synthesizing ambient temperature ionic liquid, wherein corresponding destination product is utilized as reaction agent, and pyridine or N-alkyl glyoxaline or 1,2-dialkyl glyoxaline, alkylogen and fluorine containing salt are used as raw material to synthesizing ambient temperature ionic liquid at normal atmosphere by continuation method or one step method, which comprises alkyl pyridine positive ions or 1,3-dialkyl glyoxaline positive ions, or 1,2,3-trialkyl glyoxaline positive ions and negative ions containing fluorine.

The invention relates to an unconditionally stable finite difference seismic wave field continuation method based on a staggered grid Lowrank operator. The method comprises the steps that a first-order speed-stress equation Fourier integral solution is utilized for constructing the Lowrank operator on a staggered grid; an attenuation function is utilized for carrying out attenuation constraint on the staggered grid Lowrank operator; the weighted least square method is utilized for calculating a finite difference coefficient; the obtained finite difference coefficient is utilized for achieving unconditionally stable finite difference seismic wave field continuation. On the basis of the Lowrank decomposition approximate wave number-spatial domain operator, the computationally-stable and high-precision optimized finite difference coefficient is obtained through the attenuation constraint and the weighted least square method, and unconditionally stable finite difference seismic wave field continuation can be achieved through the constructed finite difference computational format.

The present invention includes 1, searching waveform in signal most similar with signal end point waveform and used as end point waveform estimation; 2, using outboard waveform in said most similar waveform as outer end point signal data estimation and continuing said waveform to outer signal end point. Said invention has advantages of high continuation data precision, eliminating end effect to both of circulation smoothness signal periodic signal and non-circulation smoothness signal.

The invention discloses a gravity and magnetic potential field analytic continuation method based on the spatial domain. The gravity and magnetic potential field refers to a gravity field or a magnetic field. The analytic continuation refers to a method of calculating the gravity field or magnetic field on other curved surfaces (including flat surfaces) by the gravity field or magnetic field on anobservation surface. The solution to the analytic continuation has two ideas including the spatial domain and the frequency domain. The analytic continuation method is a novel method for the spatialdomain, can directly continue the magnetic anomaly data of aeromagnetic measurement down to a ground enhanced magnetic anomaly signal, and can also continue the ground observation data up to a highersurface to highlight a deep field feature. The method can continue the abnormal data observed by any curved surface to another arbitrary curved surface, breaks through the limitation that the continuation surface in the frequency domain method must be a flat surface, and solves the singular point problem in the spatial domain analytical continuation method.

The invention discloses an airborne gravity downward continuation method based on integral iteration algorithm. The method comprises the following steps of when the airborne gravity measurement data of a measured area is subjected to downwards continuation, taking the airborne gravity measurement data as the original value of integral iteration and performing upwards continuation on the airborne gravity measurement data; calculating the difference between an upward continuation result obtained by upward continuation and the airborne gravity measurement data, and taking the difference as the feedback quantity of a downward continuation result; and superposing the feedback quantity and the original value to obtain a new iterative original value, and performing next iteration on the new iterative original value. The method has the advantages of simple principle, simple and convenient operation, easiness in popularization, capability of improving data precision and confidence degree, and the like.

The invention provides a vibration type flow meter characteristic signal extraction method based on improved assemble average empirical mode decomposition. The method includes the steps of conducting end continuation processing on a collected vibration type flow meter flow vibration signal through a waveform-matched self-adaption end continuation method, conducting envelope line fitting on the collected vibration signal through a cubic B-spline method, conducting MEEMD decomposition to obtain a plurality of IMF components, conducting relevance analysis on the IMF components and the original signal, selecting the useful IMF components, conducting HHT conversion on the IMF components, and obtaining the Hilbert time-frequency spectrum and the marginal spectrum of the flow signal, wherein the Hilbert time-frequency spectrum and the marginal spectrum are the signal characteristics of the vibration type flow meter flow vibration signal. The method is suitable for accurately and rapidly metering the pipe network fluid flow in the industrial field.

The invention provides a needling machine transmission mechanism vibration signal processing method based on combination of MEEMD and an exponential wavelet threshold. The needling machine transmission mechanism vibration signal feature extraction method comprises the steps of: carrying out endpoint continuation processing on an acquired needling machine transmission mechanism vibration signal byadopting a waveform matched self-adaptive endpoint continuation method; performing wavelet decomposition, and denoising and reconstructing the acquired signal by utilizing an exponential wavelet threshold function to obtain the denoised signal; performing envelope line fitting on the denoised vibration signal by adopting a cubic B-spline method, and then carrying out MEEMD decomposition on the signal to obtain cross correlation coefficients and kurtosis values of a plurality of IMF components and the denoised signal; performing correlation analysis on the IMFs and the original signal to selectthe useful IMF; and finally performing Hilbert transform on the IMF components to obtain a Hilbert spectrum of the signal, and regarding the Hilbert spectrum as a signal feature of the needling machine transmission mechanism vibration signal. The needling machine transmission mechanism vibration signal feature extraction method is suitable for fault diagnosis of a needling machine transmission mechanism in the industrial field.

A multi-scale seismic data joint imaging method based on fluctuation theory comprises the steps of: respectively measuring ground seismic data, cross-well seismic data and/or vertical seismic profile data within a block, namely at least two types of seismic data in a VSP method by adopting wave field direct downward continuation method so as to obtain pre-stack depth migration data; respectively conducting normalization treatment on the obtained pre-stack depth migration data of at least two types of seismic data, namely the ground seismic data, the crow-well seismic data and/or the vertical seismic profile data; and superposing the pre-stack depth migration data after normalization treatment to obtain a multi-scale data joint imaging result in the block. The method can combines the advantages of the ground seismic data, the cross-well seismic data and the vertical seismic profile data, is adapt to horizontal change of a velocity field better and maintains a certain degree of dynamic characteristics.

The invention provides a composite beam type bridge floor continuation device applied in hollow slab girder bridges. The device comprises a prefabricated steel plate standard segment with T-shaped ribs and F4 plates; the bottom of the steel plate standard segment is provided with longitudinal straight ribs welded at a construction site; the steel plate standard segment and the longitudinal straight ribs are supported on a cement mortar screed coat cast in situ on a hollow slab girder through the F4 plates; two sides of the steel plate standard segment are provided with stainless steel U-shaped drainage chutes; oil immersed cork strips and stainless steel plates are embedded in the U-shaped drainage chutes. The invention also provides a composite beam type bridge floor continuation method applied in hollow slab girder bridges. By means of the device and method, concrete cracking can be effectively prevented, and seepage water is discharged along two sides of the bridge to prevent erosion.

The invention discloses a ferromagnetic resonance fault detection method for an isolated neutral system. Three-phase voltage and a zero-sequence voltage signal of a bus are analyzed to detect the ferromagnetic resonance fault of the system. According to the method, with Hilbert Huang transform (HHT) based on empirical mode decomposition (EMD) as the core, in combination with FFT, FFT analysis is firstly performed on the three-phase voltage and the zero-sequence voltage signal, then HHT analysis is performed, and finally the moment of ferromagnetic resonance and the amplitude value of ferromagnetic resonance over-voltage are obtained through a three-dimensional Hilbert spectrum, so that the ferromagnetic resonance type, the amplitude value and the inducing moment are accurately analyzed in a quantified mode. The HHT signal analysis method is adopted for completely getting rid of linearity and stability constraints, namely, frequency-domain analysis can be performed on the voltage signal, and meanwhile time-domain analysis can be performed; in the process of HHT analysis, an RBF-point symmetry continuation method is adopted, in combination with a mirror image continuation method, the end effect of HHT is improved, and mode superposition is avoided.

A communication apparatus connected to a network to be able to communicate with another device includes a first control portion to communicate with another device connected to the network, and a second control portion to be driven in response to input of a reset signal from the first control portion and to communicate with another device through the first communication portion. The first control portion includes a detection portion to detect data transmitted from another device to the communication apparatus, a data storage portion to store the data to the communication apparatus, and a reset portion to output the reset signal to the second control portion in response to detection of the data to the communication apparatus. The second control portion includes a stop portion to stop driving of the second control portion when a predetermined condition is met, and a network communication portion to communicate with another device based on the detected data to the communication apparatus. One of the first control portion and the second control portion further includes a communication continuation portion to transmit data including a reply for continuing communication with another device, based on the detected data to the communication apparatus, until the network communication portion becomes able to communicate with another device. After becoming able to communicate with another device, if data is stored in the data storage portion, the network communication portion further communicates with another device based on the stored data.

The invention discloses a real-time depth-of-field continuation method based on a Laplace pyramid for a microscope, and a system according to the method comprises the components: a screening module which screens an input image according to a depth-of-field change criterion; a registration module which is used for balancing the brightness, estimating the deformation between the images and correcting; and a fusion module which is used for respectively establishing Laplace pyramids for the real-time input image and the previous fused image, fusing all layers of the pyramids by adopting a maximumcontrast principle, and finally restoring the fused pyramids into a final fused image. Aiming at the real-time processing requirement, the invention provides a set of perfect depth-of-field continuation scheme which can be used for processing a microscopic observation image in real time and obtaining a depth-of-field continuation image with large depth of field and high quality. By means of the method, a user only needs to manually rotate the fine focusing knob without concerning the rotating speed, and an ultra-depth-of-field microscopic image can be automatically obtained. The method has high robustness for depth-of-field change, and the final fusion quality is not easily influenced by the depth-of-field change degree or direction change.

The invention provides a wavelet transform-based high frequency continuation method, and belongs to the field of digital signal processing of seismic exploration data processing. The method includes the steps of: (1) inputting seismic data channel by channel, and performing continuous wavelet transform on the seismic data, thereby decomposing the seismic data on different wavelet scales, and obtaining principal axis frequency; (2) performing continuation frequency band by frequency band according to octave: on each wavelet scale, performing frequency spectrum continuation on the principal axis frequency in a wavelet domain according to octave, thereby obtaining primary harmonic waves and a series of continuation harmonic waves; and (3) reconstructing seismic data: utilizing wavelet transform and inverse transform to reconstruct the primary harmonic waves and continuation harmonic waves, thereby obtaining seismic data after high frequency continuation.

The invention relates to a compound production method, particularly to a synthesis method and apparatus of hexahydric cyclocompounds by using a continuation method. Dienophile and diene mixtures are added in a multi-segment tubular reactor according to a mol ratio of 1-2:1 to perfrom reaction, the reaction temperature of a first segment is controlled in 50-200 DEG C, the cycle ratio is circulation:discharge=15:1, the discharged portion enters into a second segment of reactor, the temperature is controlled in 100-300 DEG C to perform reaction, the cycle ratio is 5:1, the discharged portion enters into a third segment of reactor, the temperature is controlled in 150-350 DEG C to perform reaction, the discharged material of the end reactor is separated, cooled and then materials are educed to be rectified so as to obtain products, the non-reacted materials is cycled to continue reaction. The invention improves the reaction conversion rate and safty performance, largely reduces energy consumption, enhaces product quality and yield, ensures subsequent product quality.

The invention relates to a high-precision downward continuation method of a geospatial time domain electromagnetic system based on an improved iterative method, and aims to improve the downward continuation precision of geospatial electromagnetic data and further improve the interpretation precision of the electromagnetic data. The method mainly comprises the following steps: calculating a surface, air theoretical induction electromotive force; determining a surface initial induction electromotive force; determining and correcting parameters in an iteration formula by a fish swarm algorithm; correcting a surface field step by step by a corrected iterative formula; determining a value of the surface induction electromotive force by a preset precision; ; verifying with a theoretical surfacevalue to prove the correctness of the improved iterative method; measuring the air induction electromotive force by a receiving coil sensor; performing baseline correcting, superposition and samplingon the measured data; continuing the surface induction electromotive force based on the improved iterative method; performing apparent resistivity and depth calculation; and finally improving the interpretation precision of the geospatial electromagnetic data.

The invention provides an icebreaker for breaking ice by using a continuation method. The icebreaker comprises a hull, wherein ice breaking devices are separately arranged on two broadsides of the hull; the ice breaking devices comprise first section mechanical brackets, coupling rotators, second section mechanical brackets, hydraulic starting devices and tapered-tip-type structures; the first section mechanical brackets are arranged at the broadsides of the hull; the second section mechanical brackets and the first section mechanical brackets are connected by the coupling rotators; and the tapered-tip-type structures are connected to the second section mechanical brackets. The icebreaker, provided by the invention, for breaking ice by using the continuation method uses the tapered-tip-type structures to give an instantaneous impact force on the vertical section of an ice layer under the action of the hydraulic devices before the icebreaker contacts the ice layer; and the icebreaker can repeatedly hit the ice layer to destroy the internal structure of the ice layer and increase the breakability of the ice layer, thereby reducing the resistance during continuous ice breaking. The icebreaker can also be used for destroying ice floes on two sides of the icebreaker during navigation, thereby reducing the lateral pressure of the ice floes on the broadsides of the hull and reducing the wear-out failure.

Theinvention relates to a supported catalyst for synthesizing 2,2-dimethyl-3-hydroxypropanal. The supported catalyst is characterized by comprising active components and a carrier, wherein the activecomponents comprise one or more of alkali metal hydroxide, carbonate and fluoride, the carrier is Gamma-Al2O3, and with carrier mass as a reference, the load amount of the active components accounts for 0.5-20% of the weight of the carrier. A certain molar ratio of formaldehyde and isobutyraldehyde are used as the raw material, the supported catalyst for synthesizing 2,2-dimethyl-3-hydroxypropanalis adopted, the reaction is conducted through a continuation method, the operations are simple, the reaction conditions are mild, the reaction temperature is low, less energy is consumed, the conversion rate and selectivity are adjustable, and industrial requirements on preparation and synthesis of 2,2-dimethyl-3-hydroxypropanal with formaldehyde and isobutyraldehyde are met.

The invention provides an improved sea clutter suppression algorithm based on EMD decomposition, and belongs to the technical field of frequency domain signal processing. The sea clutter suppression algorithm comprises the following steps: firstly, solving a frequency spectrum of clutter area data to be processed, and detecting an estimated clutter value to be set as a threshold value to obtain original data with clutter interference filtered out; Iteratively decomposing the original data to obtain an appropriate IMF (Inertial Measurement Function), and screening and judging by adopting a Rilling algorithm; Adopting a polynomial fitting continuation method to solve the endpoint effect; Mode aliasing in EMD decomposition is suppressed using a mask signal. Strong clutters and interference contained in the data are removed, and the operation efficiency of the EMD algorithm is improved; The influence of modal aliasing is effectively inhibited; The suppression of sea clutters and part of interferences is realized, and the suppression capability of the constant false alarm algorithm on the sea clutters is improved. By effectively combining multiple EMD improvement measures, the effectiveness and applicability of the algorithm are improved.

The invention provides an automatic backlighting continuation method, system and terminal based on face recognition. The automatic continuation backlighting method includes the following steps that when the terminal detects that the distance between a face and a terminal screen is smaller than the preset value, the terminal screen backlight is lighted up, and the backlight closing cycle is set; when the backlight closing cycle is reached, the terminal compares the obtained face image information and the stored face feature information, and if matching is successful, the next backlight closing cycle is entered; the terminal conducts statistics on the face detection times and the face matching success times in a preset time frame and obtains the face matching success rate according to the obtained face detection times and the face matching success times and a preset strategy; the terminal obtains the adjusted backlight closing cycle according to the obtained face matching success rate, a face matching success rate range and a backlight closing cycle adjustment strategy table. By means of the automatic backlighting continuation method, system and terminal based on face recognition, a flexible automatic backlight screen off delay scheme is provided, and the user experience is greatly improved.

The invention provides a mobile terminal and a call priority continuation method thereof. The method includes the steps: when the mobile terminal is in a free state or a listening state and a push signal of a PTT (push to talk) key is detected, acquiring the call priority; when a numeric key operating signal is detected, operating a number corresponding to the numeric key according to the operating signal and a preset rule to obtain call priority duration time T, and keeping the call priority; timing the call priority duration time T; and when a PPT key release signal is detected and timing is end or a PPT key click signal is detected, releasing the call priority. Using the mobile terminal and the call priority continuation method thereof enables users to be free of constantly pushing the PPT key during calling, and the call priority can be maintained according to requirements of the users, so that utilization is facilitated for the users.

The invention relates to a triangular looped network ranging distance continuation method and belongs to the technical field of power system relay protection. The method includes the steps that according to a triangular looped network composed of power transmission lines among three transformer substations, a travelling wave ranging device is arranged only in the transformer substation connected with a busbar M, and the lines l1 and l3 which are adjacent to each other are monitored. After a fault happens in the power transmission line l2, which is not monitored by the travelling wave ranging device, in the looped network, initial fault travelling waves reach busbars N and P at the two ends of the fault line and are transmitted to the perfect lines in the looped network through the busbars, current travelling waves of a measuring end TA1 of the perfect line l1 are acquired through the travelling wave ranging device, the time for the initial fault travelling waves to reach the TA1 through the perfect line l1 and the time for the initial fault travelling waves to reach the TA1 through the perfect line l3 are respectively recorded, then, the time difference delta t is calculated, and finally, the fault distance x is calculated according to the overall length of all the lines of the triangular looped network and experimental wave speed. Theoretical analysis and a simulation result show that the method is not affected by fault instantaneity, fault transition resistance changes and other factors, and a ranging result is accurate and reliable.

The invention discloses a simulation method of interbed multiples with controllable position grading in oil and gas reservoirs, and belongs to the field of forward simulation of a seismic wavefield. The method includes adaptive continuation step distance calculation, two-dimensional counter-cycle continuation boundary reflection processing and dual position restraint in wavefield simulation. The method realizes simulation of grading interbed multiples in a recursive cycle manner based on adaptive variable step distance wavefield continuation and comprises an input data preparation process, a recursive cycle wavefield simulation process and a boundary reflection suppression process. Dual position restraint is added to a model so that the interbed multiples between the grades generated by aspecific stratum can be simulated; artificial boundary reflection generated in a wavefield continuation process is suppressed by employing the two-dimensional counter-cycle continuation method so thata boundary reflection suppression effect better than the conventional boundary attenuation is obtained; and an adaptive variable step distance wavefield continuation technology is proposed so that the efficiency of wavefield simulation is greatly improved.