45 results about "Beat Number" patented technology

The invention relates to a dynamic tracking method of the direction of arrival of coherent signals under an impulsive noise environment. The dynamic tracking method comprises the steps that signal sampling data are acquired; classifying unification preprocessing is conducted on a received signal data vector; a uniform linear array is divided into a plurality of subarrays; a received data vector undergoing spatial forward backward smoothing is substituted into a PASTA algorithm to obtain signal subspace; a MUSIC algorithm is used for processing the data of the signal subspace, and the direction of arrival of object signals is acquired through spectral peak searching; a t is made to be equal to t+1, the angle of the direction of arrival of the signals with corresponding the beat number is obtained until the maximum beat number is reached, and DOA dynamic tracking of coherent signal sources under the impulsive noise environment is achieved. According to the method, a projection subspace approaching tracking algorithm is used, the signal subspace of incident signals can be tracked in real time, then a MUSIC method is used for conducting precise detection on the direction of arrival of the signals, the robustness of the method is high, and the tracking effect is good.

The invention discloses an estimation method for a plurality of Doppler frequency offsets of an OFDM (orthogonal frequency division multiplexing) system in a high-speed mobile environment. The estimation method comprises the following steps that: a mobile relay terminal is set on a high-speed mobile vehicle and used for forwarding communication data between a base station and a mobile station, at the time, transmission routes with a limited number exist between the base station and the mobile relay terminal, and each route corresponds to different Doppler frequency offsets; and a plurality of Doppler frequency offsets between the base station and the mobile station on the vehicle are obtained by analysing the plurality of Doppler frequency offsets between the base station and the mobile relay terminal. With the adoption of the method disclosed by the invention, estimation for the plurality of Doppler frequency offsets in the high-speed mobile environment is realized. Moreover, the greater a sub-carrier number Nc is, the smaller a mean square error under the same signal-to-noise ratio is, namely, the more accurate the estimation for the frequency offsets is. Because in the case that Nb is given, increase for the Nc is increase for Na essentially, and the Na is equal to the fast beat number of a signal, the accuracy of estimation for a covariance matrix Rd can be improved via the increase for the Nc, thus the estimation for the frequency offsets is more accurate.

The invention discloses a page background setting method and device, a live broadcast page background setting method and device and a storage medium, and belongs to the technical field of computers. The method comprises: when an audio is played in a target page, determining the beat number and rhythm points of the audio; dividing the playing time of the audio according to the beat number of the audio to obtain at least one time division point as the beat point of the audio; when the audio is played to the beat point, playing a first animation in a background area of the target page; and when the audio is played to the rhythm point, playing a second animation in the background area of the target page. In the audio playing process, the dynamic effect that the background of the user visual area changes along with the audio can be presented in the target page, the visual experience of the audio is improved, and therefore the visual effect of the target page is improved.

The invention, which belongs to the field of radar technology, discloses an actual-value ESPRIT non-circular signal angle estimation method for a single-base MIMO radar. Matched filtering is carried out on array element receiving data and a transmitted signal to obtain an observation data vector; dimensionality reduction preprocessing is carried out on the observation data to obtain a low-dimensional space receiving data vector; on the basis of a non-circular characteristic of the signal and an Euler formula, an actual-value receiving data vector with array aperture doubling is constructed; arotation invariance relationship of a virtual array with aperture extending is constructed; a covariance matrix of the extended receiving data is calculated and feature value decomposition is carriedout on the matrix, an actual-value signal sub space is estimated; new actual-value signal sub space is defined and a rotation invariance equation of the new actual-value signal sub space is calculated; and a DOA estimation value of the target is calculated. Therefore, the DOA estimation accuracy is improved obviously and the computational complexity of the ESPRIT algorithm is reduced substantially. The estimation method is suitable for the low-signal-to-noise-ratio and low-fast-beat-number occasions.

The invention provides a moving coil gas-magnetism combined air-suspension double-workpiece-stage vector circular-arc exchange method and device based on staggered magnetic steel arrangement and belongs to a semiconductor manufacturing equipment technology. The device comprises a supporting frame, a balance mass block, gas-magnetism combined air-suspension workpiece stages, workpiece stage measurement devices and workpiece stage driving devices, wherein the two workpiece stages work between a measurement position and an exposure position, the positions of the workpiece stages are measured by adopting a plane grating, the workpiece stages are driven by adopting air suspension and planar motors, staggered magnetic steel arrangement is adopted for macro-moving planar motor stators, and the planar motors are adopted to drive the two workpiece stages to achieve quick single-beat arc stage exchange in the double-workpiece-stage exchange process. The problems of large beat number, long trajectories, multiple start-stop links, long stabilization time and the like of an existing stage exchange scheme are solved, stage exchange links are decreased, the stage exchange time is shortened, and the productive rate of a photo-etching machine is improved.

The invention discloses a variable spraying method for a plane polygon. According to the variable spraying method for the plane polygon, geometric analysis is carried out on an irregular polygon, theirregular polygon is divided into the combination of a triangle and n trapezoids or the combination of n trapezoids, a quantitative spraying area and a variable spraying area are planned, and an optimal spraying track is generated; a quantitative spraying method is adopted for most of the trapezoid regions, a trapezoid scroll number required by variable spraying is obtained according to the widthof the triangle, and the triangular part is digested by adopting the variable spraying method; and the diameter of the spraying pattern is calculated in real time in the variable spraying process, andthe electrostatic voltage of a spinning cup, the rotating speed of the spinning cup, the distance between the spinning cup and the workpiece, the moving speed of the spinning cup and other variable spraying parameters are reversely pushed out through the diameter of the spraying pattern and the expected beat number. According to the variable spraying method for the plane polygon, the trajectory planning time of early-stage spraying can be shortened, the trajectory planning problem of the complex polygon can be simplified, thus the waste of the coating can be reduced, and the economic benefitis improved; and meanwhile, the discharge amount of the paint to the spraying room can be reduced, and the pollution degree of the workshop can be reduced.

The invention provides a moving magnetic steel gas-magnetism combined air-suspension double-workpiece-stage vector circular-arc exchange method and device based on planar grating measurement and belongs to a semiconductor manufacturing equipment technology. The device comprises a supporting frame, a balance mass block, gas-magnetism combined air-suspension workpiece stages, workpiece stage measurement devices, workpiece stage driving devices and sensor signal transmission devices, wherein the two workpiece stages work between a measurement position and an exposure position, the positions of the workpiece stages are measured by adopting a plane grating, motion compensation is conducted on the balance mass block by adopting a passive compensation structure consisting of plane leaf springs and electromagnetic dampers, the workpiece stages are driven by adopting air suspension and planar motors, and the planar motors are adopted to drive the two workpiece stages to achieve quick single-beat arc stage exchange in the double-workpiece-stage exchange process. The problems of large beat number, long trajectories, multiple start-stop links, long stabilization time and the like of an existing stage exchange scheme are solved, stage exchange links are decreased, the stage exchange time is shortened, and the productive rate of a photo-etching machine is improved.

The present invention discloses a scheduling control method and device in the TD-SCDMA base-band processing According to the method, related operation procedure is divided into a plurality of streamline beats and a starting time point is determined, 'information elements' are scheduled and controlled by using the starting time point as the core code, the operation time count values and the starting time points in the scheduling control information elements are compared in order, if the comparing result is equal, corresponding scheduling control signals are generated according to the carrier wave number, the time slot time and the beat number in the information element, and then an execution of a corresponding arithmetic operation module is started. The device comprises a ROM storage, a ROM controller, a time point counter, a time point comparator and a scheduling control signal decoder. Based on the scheduling control method with a fixed time point, accurate scheduling can be achievedand software and hardware are easy to realize. The device can complete complicated scheduling tasks which need high-performance CPU and DSP by only utilizing a few of hardware circuits.

The invention provides a moving magnetic steel gas-magnetism combined air-suspension double-workpiece-stage vector circular-arc exchange method and device based on double-layer water cooling and belongs to a semiconductor manufacturing equipment technology. The device comprises a supporting frame, a balance mass block, gas-magnetism combined air-suspension workpiece stages, workpiece stage measurement devices, workpiece stage driving devices and sensor signal transmission devices, wherein the two workpiece stages work between a measurement position and an exposure position, the positions of the workpiece stages are measured by adopting a plane grating, coil arrays are cooled by adopting a double-layer water cooling structure, the workpiece stages are driven by adopting air suspension and planar motors, and the planar motors are adopted to drive the two workpiece stages to achieve quick single-beat arc stage exchange in the double-workpiece-stage exchange process. The problems of large beat number, long trajectories, multiple start-stop links, long stabilization time and the like of an existing stage exchange scheme are solved, stage exchange links are decreased, the stage exchange time is shortened, and the productive rate of a photo-etching machine is improved.

The invention belongs to testing technologies of flight control system software, and relates to a test method of a latch in the flight control system software. The method comprises the following steps that a modeled test method is used, conceptual design test cases of scenes are taken, according to concepts of the latch, input signals and executed beat numbers are mapped into matrixes, wherein each matrix is corresponding to a scene, vectors of each column in each of the matrixes are input to a tested program according to the order of time beats sequentially to validate multiple successive beats, and test results are determined by using a mode of PASS / FAIL (pass / fail) criteria, conditions which need to be met by the test results are given through scripts and related information of a test coverage ratio is obtained. The method greatly improves the flexibility of the test and improves the test efficiency.

The invention discloses a trigonometric function operation circuit based on a fixed point number. According to the trigonometric function operation circuit, a preprocessing module (101) is connected with a DDR module (100); an iterative operation module (103) is connected with the preprocessing module (101); under the driving of a counting beat number of an iterative counting module (102), according to an operation result symbol bit determined in advance by preprocessing results of an operand I and an operand II output by the pre-processing module (101), an input operand serves as the next input of a current stage at current output of the current stage to form a feedback structure for iteration in the same stage; and after 16-time iterative operation is completed, a trigonometric functionresult of complement processing is output. Compared with the prior art, the operation circuit disclosed by the invention saves software instruction resources of a processor, and ensures the operationprecision not to be changed on the premise that the circuit scale is unchanged.

The invention discloses a method, device and system for preventing driving fatigue and relates to the technical field of information processing. The method, device and system for preventing the driving fatigue aim at improving convenience of driving fatigue preventing processing. The method comprises the steps that first music data are obtained, wherein the BPM value of the beat number of the first music data in each minute meets a preset requirement; the first music data are used for being combined with brain wave data with the brain refreshing function to generate second music data; the second music data are sent to a terminal, and thus the terminal conducts driving fatigue preventing processing through the second music data. The method, device and system for preventing the driving fatigue are mainly used in the travel monitoring technology.

The invention discloses a clock domain crossing data transmission method and device.The method comprises the steps that a clock management module detects the clock frequency of an output circuit and an input circuit; when the clock frequency of the output circuit is higher than that of the input circuit, the clock management module controls the input circuit to sample communication data of the output end of the input circuit according to a first sampling beat number; when the clock frequency of the output circuit is lower than that of the input circuit, the clock management module controls the input circuit to sample communication data of the output end of the input circuit according to a second sampling beat number; the second sampling beat number is smaller than the first sampling beat number.The technical problem that inaccurate data transmission is caused by difference in clock frequency of the output circuit and the input circuit during clock domain crossing data transmission of data is solved.

The invention discloses a method for controlling double channel synchronization. A double channel comprises two channel bodies; and double channel synchronization comprises power-on synchronization and cycle synchronization. The method for controlling double channel synchronization comprises the steps: controlling power-on synchronization, specifically, timer interrupt is controlled by judging theorder of the time that the two channel bodies complete the initialization; and controlling cycle synchronization, specifically, a timer interrupt timer is reset by judging whether last small frame beat numbers of the two channel bodies are consistent or not. The invention also discloses a system for controlling double channel synchronization. The method for controlling double channel synchronization reduces the timing difference of the timer interrupt of the double channel.

The invention discloses an accompaniment music generation method and device and a computer readable storage medium, and belongs to the technical field of computers. The method comprises the steps of determining a target beat number of initial music, wherein the target beat number is a beat number per minute of the initial music, in the virtual musical instruments corresponding to the at least twobeat number ranges, determining a target virtual musical instrument corresponding to the beat number range where the target beat number is located, in the playing process of the initial music, receiving at least two trigger instructions for the target virtual musical instrument, and according to the receiving time of the at least two trigger instructions, combining the sound of the target virtualmusical instrument indicated by each trigger instruction in the at least two trigger instructions to obtain accompaniment music. The problem that computer software related to music creation is singlein function is solved. The method is used for generating accompaniment music.

The invention belongs to the technical field of embedded systems, and discloses a software timer implementation method for an embedded system. The embedded system maintains a global linked list and the minimum expiration time; the global linked list is arranged in an ascending order according to the expiration time of software to a timer, and the software timer is driven by periodic hardware interrupt; the system beat number is updated in an interrupt processing program, and the minimum expiration time of the system is inquired; if the minimum expiration time is consistent with the current beat number, a software timer task is awakened; after the software timer task is awakened, an activation linked list is inquired, and a message is sent to a task corresponding to an expiration timer; andafter the task receives a timer expiration message, the corresponding service is processed. The technical scheme of the invention has simple implementation, high precision and small system overhead.

The invention discloses a model-free tracking control method for piezoelectric ceramic actuators and a medium, relates to a robust regression prediction, PI control and self-adaptive inverse-based combined tracking control method, and belongs to the technical field of follow-up control. According to the method, the sine and cosine functions of main orders in micro vibration are taken as primary functions, robust regression is utilized to regress a reference control signal, and a regression value is utilized to predict a practical control signal so as to realize advanced control; the inner ringadopts PI control so as to realize preliminary smooth tracking, for the advanced control signal, of a piezoelectric ceramic; through calculating cross-correlation functions of the response of the piezoelectric ceramic and the reference control signal, an advanced quantity, for the reference control signal, of the response is estimated to adjust the delayed beat number of the pure lag links in a controller, thereby realizing the synchronization of the response of the piezoelectric ceramic and the reference control signal; and through calculating a linear relationship, for the reference controlsignal, of the response, the gain and zero offset of the controller are corrected by utilizing a correction coefficient, so that the amplitude tracking, for the reference control signal, of the response is realized.

The invention is suitable for the technical field of medical treatment, and provides a method, system and device for displaying arterial stiffness. The device for displaying arterial stiffness comprises an arm belt, a pressure sensor and man-machine interaction equipment, through the device, a pressure value, exerted on the pressure sensor, of the artery is obtained when the pressure of the arm belt is increased or decreased, a pressure feature curve of the pressure value changing with time is obtained, according to the feature of a curve segment, corresponding to a preset pressure value, in the pressure feature curve, an arterial stiffness index is obtained, and through easy operation, the accurate arterial stiffness index can be obtained. In this way, the accuracy of arterial stiffness detection can be effectively improved, according to the pressure value, a blood pressure value and a pulse beat number are obtained, one or two of the blood pressure value and the pulse beat number andthe arterial stiffness index are displayed through the man-machine interaction equipment, several parameters can be measured and displayed at the same time, and the method, system and device are suitable for application and popularization.

The invention discloses a fractional order delay realization method based on a sampling control separation principle, which belongs to the technical field of control theories and signal processing. According to the sampling control separation principle, a high-speed timer of a microprocessor is used to generate fixed delay to trigger sampling to realize fractional order delay sampling, a fractional order delay link is further realized, the timer is adopted to count the fixed delay after each control period begins and triggers a sampling module to carry out fractional order delay sampling on input at the expiration of the fixed delay, the fixed delay can be determined according to a product between the fractional order delay beat number and the control period, the fractional order signals sampled in a former period are used for calculation in a next controller calculation period, the following other realization is similar to realization of the traditional control system, the design is simple, too many parameters do not need to be calculated, and an approximate fitting condition does not exist.

The invention relates to a simulation method and a simulator in a multi-processor structure. A multi-processor host machine is used for simulating the behavior of a plurality of processors of a target machine in a multi-processor structure. The method comprises the following steps that: a plurality of host processes are created, wherein each host process adopts a turning mode for executing the behavior simulation on the distributed target machine processor, a plurality of host processes are executed in parallel, and the beat number of each host process is added with 1 after the behavior simulation on one target machine processor beat of the distributed target machine processor by each host process; and the loose synchronization among a plurality of processes is realized according to the beat number and the current overall clock number of each host process, and the current overall clock value is the target machine processor beat number. The simulation method and the simulator in the multi-processor structure have the advantages that the parallel simulation speed is accelerated, the simulation progress differences among all processors of the target machine are effectively controlled, and the authenticity of the behavior simulation of the target machine multi-processor structure can be maintained.

A T-wave alternans (TWA) measuring apparatus is configured to group electrocardiogram (ECG) waveforms in increments of a first beat, to test a statistical intergroup difference for the correponding first groups, and to determine that a heartbeat condition is unstable, when a significant statistical difference exists between the first groups. The apparatus is further configured to determine the magnitude of TWA when it is determined that the heartbeat condition is unstable. The ECG waveforms may further be grouped in increments of a second beat number to generate second groups, and to determine that the heartbeat condition is unstable when a significant statistical difference exists between the first groups but not between the second groups.

The invention provides a same-phase flickering method, a same-phase flickering device, a server and a storage medium. The same-phase flickering method comprises the steps of: acquiring current systemtime of a terminal in response to notification information sent by means of a timer of a receiving terminal at every preset first time interval, and calculating a second time interval between the current system time and preset starting time; calculating a current beat number according to the second time interval and preset beat duration, wherein the beat duration is greater than the first time interval; and determining target lamplight of the current terminal for promoting alarm information based on the current beat number and a third time interval used for prompting lamplight of the alarm information in the terminal flicker and switch with one another, wherein the third time interval is a positive integer multiple of the beat duration. The same-phase flickering method, the same-phase flickering device, the server and the storage medium provided by the invention can realize that the alarm information flicker in the same phase, thereby avoiding the problem that the flickering is disordered becaused the alarm information flickers at different frequencies in the prior art and is inconvenient for monitoring personnel to identify the alarm information.

The invention discloses a music score analysis method and device based on feature rules. Firstly, a camera is used for carrying out image collection on a paper music score, the area where the music score is located is detected in the collected image, and rotation correction is carried out on the music score image in the area. In the corrected music score image, the score lines and the symbols are separated according to the score line characteristics of the music score, and the pixel coordinates of the score lines and the symbols on the image are obtained at the same time. The separated symbols are classified according to symbol features and are divided into two types of symbols, namely symbols and descriptors, and correlation among the symbols, the descriptors and the symbols can be obtained according to pixel coordinates. The symbols can acquire tone and beat number information of the notes, and the descriptors can acquire music score information such as tone numbers, music score numbers, continuous tones, rising and falling tones and the like. The music information contained in the music score can be intelligently analyzed by integrating the symbols, the descriptors and the incidence relation between the symbols and the descriptors. The music score analysis method disclosed by the invention has the characteristic of high note recognition accuracy.

The invention discloses a music score generation method and device and a computer readable storage medium. The method comprises the steps of obtaining a target audio; generating a chromaticity map of the target audio corresponding to each sound level, and using the chromaticity map to identify a chord of the target audio to obtain chord information; performing tone detection on the target audio to obtain original tone information; performing rhythm detection on the target audio to obtain the number of beats; identifying the beat type of each audio frame of the target audio, and determining an audio beat number based on the corresponding relationship between the beat type and the beat number; performing music score drawing by using the chord information, the original tone information, the beat number and the audio beat number to obtain a target music score; according to the method, the target audio is processed to obtain the data and the information necessary for drawing the music score, and the target music score is drawn by using the data and the information, so that compared with a manual score drawing mode, the accurate music score can be efficiently generated, and the music score generation efficiency and accuracy are relatively high.

The invention provides a moving coil magnetic-levitation wireless micro-motion-stage vector circular-arc exchange method and device based on herringbone coil arrangement and belongs to a semiconductor manufacturing equipment technology. The device comprises a supporting frame, a balance mass block, magnetic-levitation workpiece stages, workpiece stage measurement devices and workpiece stage driving devices, wherein the two workpiece stages work between a measurement position and an exposure position, the positions of the workpiece stages are measured by adopting a plane grating, the workpiece stages are driven by magnetic-levitation planar motors, the herringbone coil arrangement is adopted for planar motor active cells, the planar motors are adopted to drive the two workpiece stages to achieve quick single-beat arc stage exchange in the double-workpiece-stage exchange process, and the workpiece stages are powered by wireless signal transmission and charging modules and get rid of constraint of cable stages. The problems of large beat number, long trajectories, multiple start-stop links, long stabilization time and the like of an existing stage exchange scheme are solved, stage exchange links are decreased, the stage exchange time is shortened, and the productive rate of a photo-etching machine is improved.

The invention discloses an accurate synchronization method of a transient recording type fault indicator, which comprises the following steps of: receiving time synchronization of a fault indicator collection unit through a fault indicator acquisition unit, calculating the rhythm of a local clock and a time synchronization clock in a time synchronization period, comparing, carrying out lead or lag compensation, and if the rhythm numbers are consistent, carrying out time synchronization. If yes, the beat matching error is reduced to the minimum. And if the condition that the beat number of the local clock and the beat number of the time synchronization clock in the time synchronization period are inconsistent occurs again, the crystal oscillator offset error is calculated and compensated, and the synchronization error is reduced to be within one clock period by calibrating the beat matching error and the crystal oscillator offset error. The method is simple and reliable, occupies few resources, is high in adaptive capacity, realizes accurate synchronization of the transient wave recording type fault indicator, increases the fault waveform research and judgment accuracy, improves the power supply stability of a power grid, and is of great significance in maintaining a reliable power utilization environment.

The invention discloses a delay fast beat-based uniform linear array high-resolution direction-of-arrival estimation method, which comprises the following steps: acquiring and storing an array fast beat, constructing a delay fast beat, calculating a signal covariance matrix, performing characteristic decomposition on the signal covariance matrix, constructing a noise subspace, calculating a spatial power spectrum, searching spectral peaks, determining a mapping direction-of-arrival, and calculating an estimated direction-of-arrival of a signal. Under the condition of the same signal-to-noise ratio and the same fast beat number, compared with the existing direction-of-arrival estimation method, the delay fast beat-based uniform linear array high-resolution direction-of-arrival estimation method has higher space resolution and can obtain higher direction-of-arrival estimation precision. Meanwhile, the calculation complexity is equivalent to that of the multi-signal classification method,so that the method is convenient to implement.

The invention belongs to the technical field of electrical control, and relates to a method for automatically controlling a household appliance to be switched off. Firstly, a pulse type pressure-sensitive sensor is arranged at a pulse beating conventional testing position of a household appliance user before the user sleeps, then pulse beating number M per minute of the household appliance user in a sleeping state is set through a control button keyboard and the value M is stored, the pulse beating number N of the household appliance user is automatically measured and judged according to a preset measuring time sequence, when N is not larger than M, a control circuit in the pulse type pressure-sensitive sensor generates trigger signals, amplifies the trigger signals and then forms switch-off driving electric signals capable of driving a relay, and a pulse type switch-off control device controls the relay arranged at the input port of the household appliance to automatically cut off the power supply of the household appliance under the driving action of the switch-off driving electric signals. The method for automatically controlling the household appliance to be switched off is simple in design principle, mature in technology, reliable in control principle, flexible and convenient to use, accurate in counting, and high in control automation degree, saves energy, enhances benefits, and is beneficial to the environment.

The invention relates to the technical field of music auxiliary teaching, and discloses a rhythm vision singing visualization method, a system and a device, and the method comprises the following steps: S1, inputting beat numbers and a plurality of notes in sequence, and presetting a beat time value and reference loudness; S2, sequentially obtaining a beat number and a plurality of notes according to the sequence; S3, determining the beatstrength according to the beat number, determining the rhythm strength according to the note sequence, and synthesizing or calling a corresponding audio according to the beat strength, the rhythm strength and the reference loudness; S4, determining information such as the position of an indication module according to the beat number and the note information; and S5, controlling the indication module to move according to a trajectory, and controlling a sound production module to synchronize the audio sound production. The beneficial effects of the invention are that a music note unit module and a beat number unit module which can be freely combined are arranged, and the acoustic model synthesis technology is combined, so that the rhythm content of autonomous sighting and singing practice is enriched, and the individual demands of users are met; and by arranging a visualization module, the difficulty of video singing rhythm practice is reduced.