8 results about "Wave group" patented technology

The invention belongs to the field of electrocardiosignal QRS wave group detection, and discloses an electrocardiosignal QRS wave group detection method based on a coding and decoding U-shaped framework, which comprises the following steps: (1) carrying out electrocardiosignal preprocessing by adopting wavelet transform and Kalman filtering, and improving the recognition accuracy of QRS waves through label amplification; (2) establishing a coding and decoding U-shaped architecture fusing a residual module and multi-scale convolution attention, and realizing feature extraction and QRS wave detection; and (3) the accuracy of R peak positioning is improved through threshold detection post-processing. According to the method, the electrocardiosignals are analyzed and processed, so that the accuracy of QRS wave detection and the model generalization ability are improved.

The invention discloses a method for modulating a traveling wave group through physiotherapy light, and relates to the technical field of light physiotherapy, the method is applied to modulated traveling wave group equipment, and the modulated traveling wave group equipment comprises a physiotherapy light source device, a modulated traveling wave group device for modulating physiotherapy light to generate a traveling wave group and a controller. The controller executes the following steps: adjusting the position and / or angle of the physiotherapy light source device; or the physical therapy light on the path from the physical therapy light source device to the irradiated object is adjusted, so that the physical therapy light on the irradiated object generates a traveling wave group. According to the design, when the physical therapy light irradiates the specific area of the body surface, the physical therapy light modulation traveling wave group is generated, the body reaction is generated, the driving effect on body fluid is effectively improved, the effects on reflection and activation of channels and collaterals can also be generated, and therefore the physical therapy effect can be effectively improved.

The invention discloses a sensor chip, sensing equipment, an echo detection method and electronic equipment. The sensor chip includes: a detection module configured to detect an echo signal and including a first detection circuit and a second detection circuit configured to provide a first detection channel for a wave group in a first mode and a second detection channel for a wave group in a second mode, respectively; a processing module configured to determine a first signal source emitting a first wave group and a second wave group in response to the first detection circuit detecting the first wave group of the first mode from the echo signal at a first time and the second detection circuit detecting the second wave group of the second mode from the echo signal at a second time, the first time and the second time are spaced by a first time period. According to the detection chip, time dimension information is introduced in echo signal detection, reliable positioning of an information source is facilitated, and simultaneous emission of wave groups in multiple modes is facilitated, so that the positioning efficiency is improved.

A graphics pipeline includes a first shader that generates first wave groups, a shader processor input (SPI) that launches the first wave groups for execution by shaders, and a scan converter that generates second waves for execution on the shaders based on results of processing the first wave groups by the one or more shaders. The first wave groups are selectively throttled based on a comparison of in-flight first wave groups and second waves pending execution on the at least one second shader. A cache holds information that is written to the cache in response to the first wave groups finishing execution on the shaders. Information is read from the cache in response to read requests issued by the second waves. In some cases, the first wave groups are selectively throttled by comparing how many first wave groups are in-flight and how many read requests to the cache are pending.

The application discloses a seismic time-depth dual-domain calibration method and device based on VSP logging, and uses a VSP corridor stack profile with layer velocity accuracy, high resolution and accurate time-depth relationship as a bridge; an accurate wave group corresponding relationship is established by using a VSP corridor stack time domain profile and a pre-stack depth migration time domain seismic profile; and an accurate calibration relationship is established by using a VSP corridor stack depth domain profile and a pre-stack depth migration depth domain seismic profile. Meanwhile, the VSP corridor stack profile itself has depth information, and has good comparability with logging curves, logging interpretation results and lithology information of a real drilling well. Therefore, accurate matching among geology, logging and seismic can be realized, accurate well-seismic calibration of different depths, different lithologies and different thickness reservoirs can be completed, and the accuracy in the process of geology, seismic interpretation and drilling geosteering is improved, which has important significance for well-seismic calibration of blocks with large burial depth, complex structure and fast vertical and horizontal velocity changes.

The invention discloses a wave absorption method and device for dynamically adjusting a relaxation area based on wave characteristics and a computer storage medium, and relates to the technical field of numerical hydrodynamic simulation, and the method comprises the steps: setting a numerical wave water tank, arranging at least two monitoring points in a working area, and obtaining a wave surface time sequence; performing incident / reflected wave decomposition and short-time spectrum analysis on the wave surface time sequence to obtain reflection coefficients of all frequency bands; dynamically adjusting the length of the relaxation area, the relaxation function shape parameter and the relaxation intensity according to the obtained reflection coefficient; acquiring a wave energy envelope, predicting a wave group propagation position, and enhancing relaxation intensity in advance at the position; in numerical calculation, flow field variables are mixed and corrected through a dynamic relaxation function, gradual dissipation of wave energy is realized, and parameters of a relaxation area are dynamically optimized by monitoring a wave surface time sequence, extracting reflection information and energy envelope and combining a prediction mechanism, so that reflection is effectively reduced, and the stability and precision of a numerical water tank are improved.

The invention provides an automatic detection method and device for waveform characteristics of a dynamic electrocardiogram and a server, and relates to the technical field of automatic detection.The automatic detection method comprises the steps that original electrocardiogram data are obtained, data preprocessing is conducted on the original electrocardiogram data, and target input electrocardiogram data are determined; performing dynamic window query processing on the target input electrocardiogram data based on a preset window range set by using a preset adaptive threshold algorithm and a preset feature point detection algorithm, determining an R-wave group, and extracting a real position of an R point from the R-wave group; performing waveform feature extraction processing on the target input electrocardio data by taking the real position of the R point as a reference through a preset local transformation algorithm, determining a Q wave and an S wave, and determining waveform features of the QRS wave group according to the real positions of the Q wave, the S wave and the R point; and based on the position of the QRS wave group, extracting waveform characteristics of a P wave and a T wave from the target input electrocardiogram data. The accuracy and the detection efficiency of dynamic electrocardiogram waveform feature detection can be remarkably improved.

The application discloses a method for identifying abandoned river channels and deterioration zones in sand bodies in a river channel, and comprises the following steps: selecting original seismic data, and establishing a fine isochronous stratigraphic framework of well-seismic combination in a typical block; on the basis of the fine isochronous stratigraphic framework, geological parameters of different types of sand bodies are extracted, a forward modeling model based on distribution characteristics of different types of sand bodies in a target layer is established, and forward modeling is completed; according to the forward modeling result, seismic response characteristics of a point bar, an abandoned river channel and a deterioration zone in the point bar are analyzed; the spectrum of a seismic attribute volume in the original seismic data is converted from a time domain to a frequency domain; according to the seismic response characteristics, a plurality of single-frequency volumes are selected from the converted seismic attribute volume; RGB attribute fusion is performed on the plurality of single-frequency volumes; and according to an obtained RGB attribute fusion image, the point bar, the abandoned river channel and the deterioration zone are identified. The application is based on forward modeling, and the wave group characteristics of the abandoned river channel and the deterioration zone are clear, so that longitudinal profile identification of the abandoned river channel and the deterioration zone is realized.