910 results about "Sideband" patented technology

The invention relates to the technical field of defect detection, in particular to a heat-conducting adhesive tape defect detection method and system based on machine vision, and the method comprises the following steps: obtaining a surface image of a heat-conducting adhesive tape, extracting a texture trend and marking an aggregation block, adjusting the trend and offset of a connecting line segment, and analyzing the angle change of a sideband node. And recognizing a skeleton trend reverse section and closing a boundary, and extracting a continuous direction changing region to obtain a defect structure image annotation layer. According to the method, the turning position in the sideband region is extracted by constructing the direction aggregation graph of the texture aggregation block, enhancing the direction identification of the direction of the regional texture, combining the grouping organization and coordinate offset processing of the line segment path, enhancing the continuous association of the image structure, and by means of the repeated distribution characteristic of the angle mutation node; and through a skeleton trend reverse paragraph and boundary closing mode, an identification range of a structure disturbance block is expanded, and coherent tracking and multi-level labeling of a structure abnormal region are completed by combining a spatial relationship between a contour trend difference and a turning point.

The invention discloses a traditional Chinese medicine internal medicine deficiency syndrome conditioning effect evaluation method and system based on a wearable device, and relates to the technical field of traditional Chinese medicine clinical informationization, and the method comprises the following steps: S1, building an electrode skin complex impedance time-frequency fingerprint, executing full-band sweep frequency perturbation, collecting complex impedance data in a continuous monitoring period, and carrying out the detection of the complex impedance time-frequency fingerprint; extracting resonance peak group and sideband coupling path information, and generating a self-excitation risk spectrum as a response reconstruction reference; and S2, performing anti-fact playback based on the self-excitation risk spectrum, replaying the conductance response in a non-resonance interval, comparing a stripping environment drift signal with contact pressure noise through the risk spectrum, and extracting purified anchor point data as an interface feature calibration reference. Abnormal signal recognition and positioning are achieved through complex impedance time-frequency fingerprints, self-excitation risk spectrums, anti-fact playback and micro-capacitance imaging, interference field regulation and control and self-adaptive impedance control are combined, the accuracy and stability of traditional Chinese medicine deficiency syndrome conditioning evaluation are improved, and the method has the high anti-interference capacity and the intelligent characteristic.

The invention relates to the technical field of frequency conversion, in particular to a radio frequency microwave signal modulation method and system, and the method comprises the following steps: detecting the ratio of the time domain peak interval to the frequency domain main sideband energy of a radio frequency signal, inputting the time domain peak interval and the frequency domain main sideband energy into a cross-correlation algorithm for synchronism analysis, extracting the periodic characteristics of a time domain peak sequence, and obtaining a frequency domain peak sequence; and generating an energy coupling factor based on a difference operation result of the frequency domain energy density gradient value and the time domain peak interval. According to the method, periodic characteristics are analyzed and extracted through the ratio of peak spacing to main sideband energy to generate an energy coupling factor, a main frequency point offset and an energy tilt vector are fused to generate a harmonic tendency parameter, an interference source path is positioned by combining a frequency trajectory vector, and disturbance levels are divided by clustering energy and harmonic parameters. And a conflict direction is pre-judged and stop band parameters are pre-loaded by grey prediction of a main sideband frequency difference value trend, and a closed-loop regulation and control system is constructed to improve the anti-drift capability and reduce the spectrum conflict risk.

This disclosure describes an auto-calibration of mixers in a quantum orchestration platform. Predistortion is computed according to an RF signal that is downconverted with a local oscillator tone that is offset from an upconverter tone. Three tones present in the original RF signal are distinguished and used to construct a cost function. The minimization of the cost function is used to cancel an unwanted LO leakage and an image tone. Because the quantum orchestration platform generates both the unconverted IQ signals and the cost function for their optimization, the optimization can be performed in real time inside a single device without the need to communicate with external devices. This allows for the optimization of single sideband upconverted signals in a fraction of the time it typically takes using distributed systems employing separate waveform generators and spectrum analyzers.

The invention discloses a steam turbine regulating valve state evaluation method, and belongs to the technical field of thermal power plant steam turbine valve state monitoring, and the method comprises the steps: collecting the video stream data and operation data of a to-be-evaluated steam turbine regulating valve rod, recognizing the contour of the valve rod based on a YOLOv5 model according to the video stream data, and outputting the feature points of the valve rod; tracking the two-dimensional coordinates of the feature points of the valve rod to calculate the vibration parameters of the valve rod; the method comprises the following steps: calculating a Pearson correlation coefficient of operation data, screening vibration parameters related to a jam fault to generate a time domain displacement sequence, performing time alignment with the operation data, performing fast Fourier transform to obtain a frequency spectrum, and identifying a dominant frequency component, a frequency multiplication component and a sideband frequency; calculating a frequency deviation and an energy distribution difference based on a preset reference spectrum library; and judging the jam grade according to the frequency deviation and the energy distribution difference. The technical problem that the jamming fault level cannot be accurately quantified by an existing turbine regulating valve state monitoring method is solved.

The invention relates to the technical field of network communication, in particular to a tourist group non-inductive cross-AP roaming method based on multi-stream graph neural network optimization hierarchical reinforcement learning. Comprising the steps of group identification and Bluetooth sideband control establishment, multi-stream scene graph modeling and foresight anchor point labeling, opportunity window inference and group-level constraint projection, HRL high-level sub-target planning, HRL low-level sideband collaborative execution, steady-state shaping, congestion suppression, rollback bundling and the like. Group movement and session states are sensed and represented in a unified manner at a network side, a cross-AP switching plan with a controllable time sequence is generated for groups rather than individuals, and resources and time slots of Bluetooth and Wi-Fi are coordinated, so that low-interruption, low-delay and consistent non-inductive roaming experience is realized in a process that the groups pass through boundaries of adjacent cells.

A riser card includes a circuit board and first, second, and third connectors. The first and second connectors are positioned at bottom and top edges of the circuit board, respectively. The third connector is mounted to a face of the circuit board. Such riser card may be mounted on a primary system board such that the first connector is detachably connected to a first complementary connector of the primary system board with the circuit board perpendicular to the primary system board, and the first connector receives power, data, and sideband signals from the first complementary connector. The second and third connectors may mate with second and third complementary connectors of an expansion card oriented parallel to the circuit board and a stackable secondary riser card oriented perpendicular to the circuit board, respectively. The riser card communicates power and sideband signals to the stackable secondary riser card via the third connector.

The invention discloses an independent double-single-side-band direct detection system based on geometric shaping and digital chaotic encryption, and belongs to the field of terahertz communication. According to the detection system, an external cavity laser ECL of a sending end generates continuous optical carriers, the continuous optical carriers are input into an I / Q modulator, a TX-DSP module generates two independent vector radio frequency signals of GS-QPSK and GS-NQAM through geometric shaping and a three-dimensional multi-vortex chaos system technology, the I / Q modulator is driven to modulate the input optical carriers, and the optical carriers are transmitted to a receiver. After being amplified, the terahertz signals are input into a one-way carrier photoelectric detector for frequency beating to obtain independent double-sideband terahertz signals, the independent double-sideband terahertz signals are input into a frequency mixer of a receiving end for frequency mixing with generated local oscillation signals, down-conversion of the signals is achieved, and fundamental frequency signals are obtained; and then the data are input to an RX-DSP module, normalization, down-sampling, signal separation, de-mapping, symbol-level and bit-level decryption and other operations are carried out, and finally two paths of original data are obtained to solve the bit error rate. According to the invention, the system communication capacity is improved, and the security of independent double-sideband signal transmission is improved.

The invention provides a wind turbine generator routing inspection method, a medium and equipment, and relates to the technical field of wind turbine generator routing inspection, a distributed communication architecture comprising a global layer, a local layer and an individual layer is constructed, and after a routing inspection task is received, a routing inspection line is determined and synchronized to a control terminal of an unmanned aerial vehicle cluster for routing inspection path planning; the method comprises the following steps: extracting modulation sideband characteristics of a gear box vibration signal, setting a fault mode identification matrix in combination with a bearing temperature gradient, collecting tower inclination angle dynamic change and foundation settlement micro-displacement, taking an edge calculation node corresponding to a wind turbine generator component as a participant, and drawing up an inspection node sequence under multi-round game iteration; and carrying out routing inspection navigation constraint in the wind turbine generator map. According to the method, the technical problems of poor inspection path adaptability and low coverage efficiency caused by lack of a multi-source data fusion and dynamic optimization mechanism in inspection task planning in the prior art are solved, and the inspection adaptability and coverage rate of the wind turbine generator are remarkably improved.

A method for a clock monitoring subsystem of a system-on-chip (SoC) supporting dynamic clock scaling and voltage gating is described. The method includes generating a set of clocks. The method also includes routing a selected one of the set of clocks for frequency measurement through one or more clock routing subsystems. The method further includes adjusting a frequency of the selected clock after the selected clock is routed through the clock routing subsystems. The method also includes communicating a sideband signal to indicate the adjusted frequency of the selected clock.

The invention relates to the field of gear fault diagnosis, in particular to a rack rail train driving gear fault diagnosis method, system and device, and solves the problem that fault features cannot be effectively extracted from rack rail section vibration signals in the prior art. The method comprises the following steps: identifying a transition section vibration signal of a transition device; identifying a toothed rail section vibration signal; the rack rail section vibration signals are processed; and fault diagnosis is realized according to the meshing frequency and the sideband information. According to the time domain characteristics of the vibration signals, the vibration signals generated when the driving gear passes through the rack rail section can be accurately recognized from the vibration signals, and self-adaptive recognition of the vibration signals of the rack rail section is achieved. According to the method, noise interference in time-frequency distribution of toothed rail section vibration signals is removed, time-frequency aggregation of the time-frequency distribution is improved, fault features of the driving gear are extracted from the time-frequency distribution, fault diagnosis of the driving gear is achieved, health state monitoring of the toothed rail train driving gear is achieved, and train operation safety is guaranteed.

Disclosed herein is an optical frequency comb generator for a distributed acoustic anomaly detection system. The system can include a continuous wave frequency modulated laser source configured to generate a laser signal. The system can include an acousto-optical modulator configured to modulate the laser signal by altering an amplitude and / or frequency of the laser signal based on an RF drive signal applied to the AOM, and to output an optical pulse with multiple frequency sidebands based on the modulation. The output can form an optical frequency comb usable detecting and locating acoustic anomalies within a structure under observation.

The invention discloses a millimeter wave signal phase noise testing method based on ultra-stable laser, and the method comprises the steps: generating the ultra-stable laser through employing a common-cavity Brillouin laser frequency stabilization technology, taking the ultra-stable laser as a carrier wave, and carrying out the double-sideband modulation of a to-be-tested millimeter wave signal; frequency shifts of the two sidebands are different, the sideband with high frequency has more downward frequency shifts, the sideband with low frequency has less downward frequency shifts, the generated common-cavity Brillouin laser and the double-optical-sideband pumping laser are coupled and separated to obtain upper and lower double-sideband optical signals with different frequency intervals, and then beat frequency and mixing frequency are performed to generate an intermediate frequency signal with MHz magnitude; the noise characteristic of the intermediate frequency signal directly carries the phase noise of the to-be-tested signal, and the phase noise analyzer carries out noise spectrum density analysis and quantitative evaluation on the intermediate frequency signal to complete the phase noise test of the to-be-tested millimeter wave signal. The collaborative optimization problem that the reference source stability, the system noise and the to-be-tested signal noise are difficult to separate in the ultrahigh frequency signal noise test is solved.

The invention relates to the technical field of belt conveyor auscultation, and discloses a belt conveyor auscultation abnormity management method based on comparative learning and time sequence modeling, comprising the following steps: step 1, acquiring operation sound and equipment parameters, extracting frame features and acquiring a voiceprint baseline; 2, the carrier roller synchronization frequency is calculated, and period and sideband fingerprint prototype vectors are constructed; step 3, inputting the frame feature and the fingerprint prototype vector into a contrast learning network to obtain a contrast embedded vector and a time sequence feature vector; 4, the time sequence modeling network outputs three types of probabilities and classification original output values; step 5, calculating an abnormal score, generating an abnormal event and determining a grade; step 6, calculating a priority score and distributing a work order; and 7, backfilling the disposal information, calculating the total cost and storing the total cost. According to the invention, accurate detection, hierarchical management and operation and maintenance closed-loop processing of abnormal operation of the belt conveyor are realized.

The invention relates to the technical field of permanent magnet synchronous motor state monitoring, and discloses a permanent magnet synchronous motor bearing state monitoring method and system based on stator current characteristics and a storage medium, and the method comprises the steps: building a stator current model under bearing degradation, and recognizing a fundamental frequency sideband component caused by air gap eccentricity and load vibration; extracting a characteristic frequency amplitude, and defining characteristic quantities K1 and K2 with working condition robustness; and a comprehensive state monitoring index W is constructed through weighted fusion, and quantitative evaluation of the bearing degradation degree is realized. The method does not need additional sensors, adapts to variable working condition operation, has early degradation identification capability, is high in monitoring precision and robustness, can realize online continuous monitoring and early warning, and is suitable for intelligent maintenance and safe operation guarantee of various PMSM systems.

A method for managing an interconnection between chiplets includes initiating sideband link training that includes transmitting a training pattern over each of a plurality of link configurations, where each link configuration includes a sideband data line and a sideband clock line. The method further includes suspending the sideband link training before completion of the sideband link training when the training pattern is transmitted over a first sideband link configuration without error, designating a sideband data line and a sideband clock line in the first sideband link configuration as a functional pair, and initiating mainband link training using the functional pair to communicate link state and status information.

The invention discloses a photon device and method for simultaneously measuring Doppler frequency shift and an angle of arrival, and belongs to the technical field of microwave photon-assisted radars. The device is configured to enable a transmitting signal and a reference signal to enter a first dual-parallel Mach-Zehnder modulator working in a carrier suppression single sideband modulation mode after being combined so as to generate two positive first-order sideband signals, and then the two positive first-order sideband signals enter a second dual-parallel Mach-Zehnder modulator and are modulated by an echo signal; and a modulation signal output from the second dual-parallel Mach-Zehnder modulator enters a photoelectric detector for photoelectric conversion to generate a down-conversion signal. Comparing the frequency of the down-conversion signal with the frequency of the reference signal by using an electric spectrum analyzer to obtain the magnitude and direction of Doppler frequency shift; the arrival angle of the target can be obtained by monitoring the power of the frequency conversion signal. Measurement of Doppler frequency shift and the angle of arrival can be completed only by using the photoelectric detector with the bandwidth lower than the frequency of the transmitted signal, and the requirement for the bandwidth of the photoelectric detector is lowered.

This invention relates to the field of radio frequency (RF) power supplies, specifically to an RF power supply frequency tuning dynamic tracking method and system. The method includes the following steps executed sequentially: S1: Generating a frequency-modulated signal based on an initial carrier frequency and the frequency of a preset modulation signal; S2: Coupled sampling of the RF signal output from the RF power supply after power amplification, filtering the sampled signal, extracting the corresponding signal components, and calculating the corresponding reflection coefficient amplitudes; S3: Comparing the corresponding reflection coefficient amplitudes and selecting the minimum reflection coefficient amplitude; S4: Using the frequency corresponding to the minimum reflection coefficient amplitude as the new carrier frequency, and obtaining a new first sideband frequency and a second sideband frequency based on the new carrier frequency; S5: Repeating steps S1 to S4 based on the updated frequencies. This solution, through iterative updates of the carrier frequency and sideband frequency, possesses the ability to detect and track the reflection coefficient amplitude in real time, and significantly shortens the tuning time.

The invention relates to a register access signal conversion and transmission method, a chip and a system on chip. The method comprises the following steps: receiving a register access request time sequence signal from an APB interface of a local chip; generating a UCIe sideband register access request data packet according to the register access request time sequence signal; and sending the UCIe sideband register access request data packet to a target layer. The chip comprises a conversion module which is located in a protocol layer of the chip and used for receiving a register access request time sequence signal from an APB interface; generating a UCIe sideband register access request data packet according to the register access request time sequence signal; and sending the UCIe sideband register access request data packet. According to the invention, the integration of the system-on-chip is facilitated, the compatibility of the system-on-chip composed of small chips is improved, so that the system-on-chip can conveniently access the local small chips and cross-chip registers, and the function specified by a UCIe protocol sideband is realized.

The invention relates to the field of radar detection methods, and discloses a microwave photon multiband radar detection method, which comprises the following steps: generating detection signals of multiple bands based on a microwave photon method, transmitting the detection signals to a target, and then carrying out dechirp processing and digital signal processing on target reflection signals to obtain a target detection result. The method specifically comprises the following steps: generating a fundamental frequency signal through a user-defined bit sequence generator, a pulse generator and an electric frequency modulator, adjusting the central wavelength and bandwidth of a signal waveform by the electric frequency modulator, amplifying the power of the fundamental frequency signal by a certain multiple through an electric power amplifier, and modulating by a distributed feedback semiconductor laser, a plurality of sidebands with equivalent power are generated by the spectrum of the optical fiber, a modulated fundamental frequency signal is input into the photoelectric detector through the optical fiber, and then the modulated fundamental frequency signal is amplified by the electric low noise amplifier to generate a multi-band frequency modulation signal. And the multifunctional detection capability of the radar system can be realized.

A smart cable for backplane storage management is provided. The cable may include a microcontroller, a power conditioning circuitry to regulate an input voltage from a power supply and provide an output voltage to the microcontroller, a storage device coupled to the microcontroller, a first end to be coupled to one or more storage devices, and a second end to be coupled to a storage controller. The microcontroller may receive sideband signals from the one or more storage drives, and may transmit connection topology information to the storage controller based at least in part on the sideband signals.

A port is to couple to another die over a die-to-die (D2D) link and includes physical layer (PHY) circuitry including a first number of sideband lanes to carry data for use in training and management of the D2D link, and a second number of mainband lanes to implement a main data path of the D2D link. The mainband lanes include a forwarded clock lane, a valid lane, and a plurality of data lanes. A logical PHY coordinates functions of the sideband lanes and the mainband lanes.

The invention relates to the field of radio frequency power supplies, in particular to a radio frequency power supply frequency tuning dynamic tracking method and system, and the method comprises the following steps: S1, generating a frequency modulation signal based on the initial carrier frequency and the frequency of a preset modulation signal; s2, carrying out coupling sampling on the radio frequency signal which is output by the radio frequency power supply and is subjected to power amplification, carrying out filtering processing on the sampled signal, extracting corresponding signal components, and respectively calculating corresponding reflection coefficient amplitudes; s3, the corresponding reflection coefficient amplitudes are compared, and the minimum reflection coefficient amplitude is selected; s4, taking the frequency corresponding to the minimum reflection coefficient amplitude as a new carrier frequency, and obtaining a new first sideband frequency and a second sideband frequency based on the new carrier frequency; and S5, repeatedly executing the steps S1 to S4 according to the updated frequency. According to the scheme, through loop iteration updating of the carrier frequency and the sideband frequency, the real-time detection and tracking capability of the reflection coefficient amplitude is achieved, and the tuning time is remarkably shortened.

The invention relates to the technical field of ultrasonic sensors, and discloses an optical fiber end face integrated micro-cavity sonic sensor which comprises a seven-core optical fiber, two light propagation waveguides, a coupling waveguide, a supporting assembly, a micro disc, a light emitter and a photoelectric detector, the two light propagation waveguides are arranged on the end face of the seven-core optical fiber, the coupling waveguide is arranged between the two light propagation waveguides, and the supporting assembly is arranged on the end face of the seven-core optical fiber. A supporting assembly is arranged on the end face of the seven-core optical fiber, a micro disc is arranged on the top of the supporting assembly, and the first fiber core and the second fiber core are connected with an external light emitter and an external photoelectric detector respectively. The wavelength of the laser output by the light emitter is locked at the linear slope of the micro-disk harmonic peak, the radius and the effective refractive index of the micro-disk are changed through the action of ultrasonic waves on the micro-disk and vibration, the harmonic peak drifts and the intensity of the output laser is changed, and then the ultrasonic waves are detected; compared with the prior art, ultrasonic waves are detected through a micro-disk resonance and laser sideband locking method, and the problem of electromagnetic interference can be effectively avoided by utilizing the optical principle.

The invention provides a BOTDR (Brillouin optical time domain reflectometry) system fusing Stokes-anti-Stokes light and a demodulation method, and belongs to the technical field of Brillouin distributed optical fiber sensing. The narrow linewidth laser is used for generating continuous optical signals; the input end of the coupler is connected with the laser, and the output end is connected with the pulse light branch and the local oscillator light branch. The pulsed light branch comprises a semiconductor optical amplifier, a random scrambler, a first erbium-doped optical fiber amplifier and a circulator which are connected in sequence; the local oscillator light branch comprises an electro-optical modulator, and the electro-optical modulator regulates and controls sideband frequency through a microwave module; the second erbium-doped optical fiber amplifier is used for extracting the Stokes light and the anti-Stokes light; the single-mode coupler mixes the double-sideband local oscillator light with the anti-Stokes light and the Stokes light; and the electrical beat frequency signals are acquired, filtered and enveloped and demodulated through an acquisition card. The detection capability of the Brillouin scattering signal is enhanced, the system structure is simplified, and the hardware cost and the maintenance difficulty are reduced.

This application is directed to controlling data timing in a memory system. The memory system includes a controller, a memory module, and an input data bus coupled between the memory controller and the memory module. The memory system transmits a data signal and a strobe signal via the input data bus from the memory controller to the memory module, and the data signal includes a train of serial input data. The memory system determines a skew time of the data signal with respect to the strobe signal, and generates a skew signal including a train of serial skew data based on the skew time of the data signal. The skew signal is transmitted from the memory module to the memory controller via a dedicated sideband bus that is distinct from the input data bus.

An abnormality diagnosis device performs determination for at least one of abnormality of an electric motor driven by an inverter driven at a predetermined operation frequency and abnormality of a motive power transmission mechanism which transmits motive power from the electric motor to a load, wherein spectrum peaks extracted through FFT analysis of detected current of the electric motor are analyzed, and frequencies of spectrum peaks due to noise of the inverter are acquired in advance using the operation frequency and the frequencies of sideband waves with respect to the operation frequency. In abnormality diagnosis, abnormality determination is performed after spectrum peaks due to noise of the inverter are extracted from spectrum peaks extracted through FFT analysis of detected current of the electric motor.

The invention relates to the technical field of frequency converter correction, in particular to a frequency converter direct-current bus correction method and system based on dynamic voltage feedback, and the method specifically comprises the steps: dynamically controlling the activation mode of a voltage sensor array according to a fluctuation state; constructing a direct-current bus voltage deviation model containing dead-zone compensation voltage and a voltage ripple frequency spectrum model containing PWM carrier sideband harmonic waves; respectively obtaining a first adjustment parameter and a second adjustment parameter; and generating a zero-sequence voltage injection instruction according to the second adjustment parameter, and implementing direct-current bus correction control by dynamically adjusting a zero-sequence voltage injection ratio. The problem that in the prior art, the system stability and the device service life are seriously restricted due to the risks of correction mismatch, harmonic amplification and even capacitor overheating of the direct current bus voltage under the dynamic working condition is solved.

In one embodiment, an apparatus comprises a first die that includes: a die-to-die adapter comprising a plurality of first registers, the die-to-die adapter to communicate with protocol layer circuitry via a flit-aware die-to-die interface (FDI) and physical layer circuitry via a raw die-to-die interface (RDI), wherein the die-to-die adapter is to receive message information of a first interconnect protocol; and the physical layer circuitry coupled to the die-to-die adapter, the physical layer circuity comprising a plurality of second registers, where the physical layer circuitry is to receive and output the message information to a second die via an interconnect having a mainband and a sideband. During a test of the apparatus, the sideband is to enable access to information in at least one of the plurality of first registers or at least one of the plurality of second registers. Other embodiments are described and claimed.

The invention discloses a UVM-based end-to-end random verification method for a complex bus interconnection bridge, and relates to the field of communication verification, and the method comprises the steps: building a verification environment based on a UVM, connecting a corresponding bus protocol master VIP containing a driver and a monitor to each slave interface of the bus interconnection bridge, connecting a corresponding bus protocol slave VIP containing a driver and a monitor to each master interface, and connecting the corresponding slave VIP containing a driver and a monitor to each slave interface of the bus interconnection bridge; a master VIP driver is used for sending read-write request excitation which carries the slave interface identity information and is carried by a sideband signal; a verification environment based on a UVM is established, excitation carrying slave identity information is sent through a VIP driver, data are packaged through a monitor and are distributed to a reference model and a scoreboard, meanwhile, the reference model is subjected to decoding routing according to a preset array, the scoreboard is matched with queue elements in sequence, and the functions of reserved queue grading processing, outsourcing characteristic directional coverage and timestamp calibration are further arranged. And multi-scene high-load simulation and error positioning are supported.