2158 results about "Light wave" patented technology

The invention discloses a thyroid intraoperative real-time navigation method and a thyroid intraoperative real-time navigation system based on multi-mode optical fusion. The thyroid intraoperative real-time navigation method comprises the following steps: outputting visible light through an endoscope and coupling light waves of a narrow-band multispectral light source to irradiate an operative field, exciting parathyroid glands to generate near-infrared fluorescence, and receiving reflected visible light, split light, near-infrared fluorescence and laser speckle signals through an endoscope probe. And separating the composite optical signal into four channels, and respectively generating an anatomical structure color image, a blood vessel spectroscopic image, a parathyroid gland near-infrared fluorescence image and a laser speckle image. Performing decorrelation processing on the laser speckle image to generate a blood flow dynamic pseudo-color decorrelation speckle image; an anatomical structure, a blood vessel center line, a parathyroid gland contour and blood flow dynamic feature points are extracted through a multi-modal registration technology, after affine transformation space alignment is conducted, a comprehensive imaging map containing the anatomical structure, blood vessel distribution and parathyroid gland function marking information is generated through a wavelet fusion algorithm, and intraoperative multi-dimensional real-time tissue navigation is achieved.

The invention provides a super lens and a femtosecond laser manufacturing real-time monitoring system applying the super lens, the super lens comprises a substrate and a nano column array on the substrate, nano columns at different positions in the nano column array independently regulate and control a first wavelength light wave and a second wavelength light wave, so that the first wavelength light wave satisfies first phase distribution, and the second wavelength light wave satisfies second phase distribution. The second wavelength light wave meets the second phase distribution, so that the super lens not only can focus the first wavelength light wave and the second wavelength light wave on the same plane, but also can control the focal depth of the first wavelength light wave to be greater than the focal depth of the second wavelength light wave, so that the requirement of a femtosecond laser manufacturing real-time monitoring system is met; not only can the anti-interference capability in the machining process be improved, but also the axial position monitoring precision can be improved.

The invention discloses a trigeminal structure spot size converter for a proton exchange waveguide and a preparation method. The trigeminal structure spot size converter sequentially comprises a substrate, an insulating layer and a lithium niobate film layer, the lithium niobate film layer comprises a first waveguide part which is used as an input end of the converter; the second waveguide part is connected with one end of the first waveguide part and is positioned on the same plane as the first waveguide part; a third waveguide portion on the second waveguide portion; the proton exchange waveguide is arranged in the third waveguide part, light is transmitted in the first waveguide part, the second waveguide part, the third waveguide part and the proton exchange waveguide in sequence, and the transverse sizes of the second waveguide part, the third waveguide part and the proton exchange waveguide are sequentially increased in the light transmission direction. The silicon oxynitride waveguide guides light waves in the optical fiber to enter the chip, the light waves in the optical fiber are efficiently guided, the light waves are limited in the silicon oxynitride waveguide and enter the lithium niobate waveguide, and loss caused by light wave diffusion is avoided; a conical waveguide structure is adopted, mode mutation is avoided, and coupling loss is reduced.

Some implementations described herein provide techniques and apparatuses provide a semiconductor device including a photonics device having a backside transmissive region and methods of manufacturing. The semiconductor device includes a first semiconductor device stacked over a second semiconductor device, where the first semiconductor device includes a photodiode structure and the second semiconductor device includes the backside transmissive region. The backside transmissive region, which is below the photodiode structure of the first semiconductor device, includes a trench structure having highly reflective structures and / or properties to maintain an optical power of light waves propagating through the backside transmissive region. An absence of structures within the trench structure lessens a likelihood of interferences which may cause a transmission loss (e.g., a reflection loss, an absorption loss, a scattering loss, and / or a mode mismatch loss) relative to another transmissive region that is adjacent to the photodiode structure.

The invention discloses a multi-sideband chirp modulation DAS system and a working method thereof, and relates to the technical field of distributed sound wave sensing. The DAS system comprises a narrow linewidth laser, an optical fiber coupler, a phase modulator, an electro-optical modulator, an erbium-doped optical fiber amplifier, an optical fiber circulator, a dense wavelength division multiplexer, a photoelectric balance detector, a data acquisition card, an arbitrary waveform generator, a direct current source and the like. The phase modulator is used for modulating constant-amplitude multi-frequency continuous light, the frequency number of light waves is related to the harmonic number of a microwave modulation signal, the frequency interval is determined by the fundamental frequency of the microwave modulation signal, the continuous light frequency can be flexibly modulated by adjusting the microwave modulation signal, and the modulation bandwidth is large; detected beat frequency signals are compressed into single-frequency signals through pulses, phase information of the single-frequency signals is demodulated, vibration signals along the sensing optical fiber can be detected, the spatial resolution of the system depends on the chirp frequency sweeping range, and the spatial resolution is high.

The invention relates to the technical field of meteorological cloud detection, and discloses a satellite-borne hyperspectral cloud layer identification method based on a dual-band fusion technology, and the method comprises the steps: firstly obtaining a hyperspectral image, carrying out the preprocessing of the hyperspectral image, and obtaining a spectrum calibration image; respectively calculating the visible light wave band transmittance and the near-infrared wave band transmittance of each pixel in the spectrum calibration image; identifying a semitransparent weather phenomenon area and a non-semitransparent weather phenomenon area according to the visible light wave band transmittance and the near-infrared wave band transmittance of each pixel; and finally, constructing a real cloud layer spectral feature model, performing real cloud layer identification on the non-translucent weather phenomenon area by using the model, and fusing the identified real cloud layer area and the translucent weather phenomenon area to generate a final cloud detection result graph. According to the method, spectral information of visible light and near-infrared wavebands is fused, a real cloud layer spectral feature model is constructed for cloud detection, and the cloud detection precision under complex atmospheric conditions is improved.

The invention relates to the technical field of video monitoring, in particular to an intelligent video monitoring system based on holographic images, which comprises a multispectral imaging module, an abnormal energy correction module, a multispectral dynamic monitoring module and a behavior track analysis module. In the invention, through capturing light wave amplitude, frequency and phase information and deeply analyzing light wave energy and spatial distribution, the perception capability of spectral characteristics and energy change in a monitoring area is improved, abnormal high-value energy distribution is identified and parameters are adjusted to realize accurate correction, and detection and correction of abnormal light wave distribution are enhanced. Based on light wave frequency change and dynamic target characteristic matching, the recognition capability of a dynamic target in a complex scene is improved, a target trajectory is comprehensively tracked, the behavior dynamic state is accurately judged, multispectral information analysis and multidimensional dynamic analysis are combined, the precise recognition, abnormal analysis and dynamic behavior interpretation capabilities of monitoring in a complex environment are remarkably enhanced, and the monitoring accuracy is improved. And efficient support is provided for intelligent video monitoring.

A hybrid laser is provided having a tuning structure that alters a wavelength range of an amplified lightwave in a micro-ring resonator (MRR). The tuning structure alters an index of refraction of a tuned ring resonator to alter the index of refraction.

The invention provides an anti-falling detection unit, a photovoltaic panel cleaning robot and an anti-falling detection method.The anti-falling detection unit comprises a substrate, an ultrasonic sensor and at least one laser sensor, the ultrasonic sensor is arranged on the substrate, and each laser sensor is arranged on the substrate; the at least one laser sensor and the ultrasonic sensor are arranged at intervals in the first direction. According to the anti-falling detection unit, the ultrasonic sensor and the laser sensor are used at the same time, the ultrasonic detection mode and the light wave detection mode are combined, comprehensive detection of the edge and the gap of the photovoltaic panel is achieved, the accuracy and the reliability of signals are improved, the problem of false alarm possibly caused by a single sensor is effectively avoided, and the detection efficiency is improved. The photovoltaic panel cleaning robot is simple in structure and convenient to operate, work interruption caused by signal abnormity can be reduced, the photovoltaic panel cleaning robot can be prevented from falling off and can cross gaps between different photovoltaic panels to complete cleaning work of the multiple photovoltaic panels, and the work efficiency of the photovoltaic panel cleaning robot is improved.

The invention discloses an intelligent light wave adjusting system and method based on human body physiological indexes, and relates to the related field of light wave adjustment, and the system comprises an index monitoring assembly which is used for obtaining the physiological indexes; the environment monitoring assembly is used for obtaining environment information; the data input assembly is used for inputting the physiological indexes and the environment information into the light wave adjusting module; the physiological activeness evaluation component is used for outputting a physiological activeness index; the scene recognition component is used for outputting a scene activeness index; and the index analysis component is used for outputting light wave adjustment parameters for adjusting the illumination device. The technical problem that an existing phototherapy product cannot carry out dynamic light wave adjustment according to real-time physiological indexes of a human body is solved, light wave parameters are intelligently adjusted according to the real-time physiological indexes of the human body and environment information, and personalized light wave adjustment experience is provided for a user. And the health is promoted while the user is ensured to keep the light comfort in different environments.

The invention discloses a scanning method and system based on pre-scanning and dynamic optimization, a medium and equipment, and the method comprises the specific steps: a pre-scanning step: carrying out the preliminary scanning of a file through light sources with different wavelengths through a multispectral scanning technology, and obtaining image information containing visible light and invisible light wave bands; a pre-scanning analysis step: based on a deep learning image analysis algorithm, analyzing a preliminary scanning image in real time, and identifying a file type, a non-uniform illumination region and a potential scanning problem; a light supplement adjustment step: dynamically adjusting the brightness, angle and spectral range of a light supplement lamp according to the pre-scanning analysis result; a high-precision scanning step: performing high-precision formal scanning to obtain a scanning image; and a post-processing step: based on AI denoising, sharpening, color correction and semantic analysis, generating an optimized scanning file. According to the method, dynamic adaptation to different document features can be realized through setting of the pre-scanning analysis step and the light supplementing adjustment step, and the scanning quality and efficiency are remarkably improved.

The invention discloses a multicolor photoelectric response synaptic device and a preparation method thereof. The multicolor photoelectric response synaptic device is of a multi-layer structure. The multilayer structure comprises a transparent conductive electrode layer, a hole transport material layer, a lead-free perovskite layer, an electron transport material layer, an organic semiconductor charge transfer compound layer and a metal electrode layer in sequence along the light incidence direction. The preparation method comprises the steps of preparing the transparent conductive electrode layer; sequentially preparing a hole transport material layer, a lead-free perovskite layer, an electron transport material layer and an organic semiconductor charge transfer compound layer on the transparent conductive electrode layer through a spin coating method; and preparing the metal electrode layer on the organic semiconductor charge transfer compound layer through vacuum evaporation. The multicolor photoelectric response synaptic device is reasonable in structural design, can realize ultraviolet-visible-near infrared multicolor photoelectric synaptic function simulation, can realize a color identification function on red light, green light and blue light in a visible light wave band, and has a good application prospect.

The invention discloses an inhaul cable based on an optical fiber technology and a cable force measuring method thereof, and the method comprises the steps: obtaining the monitoring data and state data of the inhaul cable, carrying out the temperature compensation of the monitoring data, obtaining a temperature compensation wavelength, correcting the temperature compensation wavelength, obtaining a first correction wavelength, correcting the first correction wavelength, obtaining a second correction wavelength, and obtaining the cable force of the inhaul cable. Determining a first inhaul cable force according to the second correction wavelength, constructing an inhaul cable force measurement model, optimizing the inhaul cable force measurement model according to the cable force error, and inputting monitoring data and state data of a to-be-measured inhaul cable into the optimized inhaul cable force measurement model to obtain a cable force measurement result. The inhaul cable based on the optical fiber technology is installed on a structure to obtain light wave signals, the light signals are processed, the cable force of the inhaul cable is calculated, and the cable force of the inhaul cable is measured in the using process of the inhaul cable based on the optical fiber technology.

The invention relates to the technical field of image processing, and discloses an image correction method and system for binocular diffraction AR intelligent glasses. The method comprises the following steps: calculating a dispersion response parameter of a diffractive optical element in the AR glasses in a visible light wave band; respectively carrying out dispersion distortion detection on the left eye image and the right eye image in the AR glasses to obtain a left eye dispersion distortion feature and a right eye dispersion distortion feature; interpupillary distance change data of a user is obtained, effective aperture offset calculation is carried out on the diffractive optical element, and interpupillary distance compensation parameters are obtained; performing coupling calculation on the left eye dispersion distortion feature, the right eye dispersion distortion feature and the interpupillary distance compensation parameter to obtain a binocular dispersion correction matrix; and performing dispersion compensation on the left eye image and the right eye image to obtain a dispersion correction image, and outputting the dispersion correction image to a display module of the AR glasses. The method can respond to the pupil distance change of the user in real time, automatically adjust dispersion correction parameters, realize accurate and comprehensive dispersion correction, and ensure the stability of dispersion correction performance.

The invention discloses a transmission-type ultra-wideband multi-focal-plane optical system which comprises a first positive lens, a first negative lens, a second positive lens, a second negative lens and a third negative lens which are sequentially arranged along the same optical axis. Incident light of different wave bands sequentially passes through the first positive lens, the first negative lens, the second positive lens, the second negative lens and the third negative lens, differential focusing is formed by setting different back intercept, and a visible light wave band, a near-infrared wave band, a medium-wave infrared wave band and a long-wave infrared wave band respectively form independent focal planes which are axially separated. The transmission wave band of the optical system is 0.5-12 microns, visible light, near-infrared light, medium-wave infrared light and long-wave infrared light are covered, the common optical element and axial separation multi-focal plane design is adopted, different wave bands share the same set of optical elements, and the target can be detected only by placing the target on the corresponding focal plane. And optical collimation of different wavebands can be realized by changing the position of the focal plane.

The invention discloses a digital twinborn intelligent travel management system and method, and relates to the technical field of travel interaction, and the method comprises the following steps: building a multi-projection unified phase baseline and energy distribution auditing model, carrying out the nanosecond-level synchronous sampling of the phase difference and brightness change curve of a plurality of projection light waves in a virtual-real superposition region, and carrying out the nanosecond-level synchronous sampling of the phase difference and brightness change curve of the multi-path projection light waves in the virtual-real superposition region; generating a corresponding initial light field energy coupling matrix; and constructing an interference trajectory inversion network based on the initial light field energy coupling matrix, and replaying the light wave superposition sequence by using a time inversion algorithm. According to the invention, accurate monitoring and active regulation and control of light field energy are realized through unifying a phase baseline and energy auditing, interference focusing and brightness mutation are effectively eliminated, and visual stability and immersion experience are improved; and energy self-adaptive balance and dynamic closed-loop control are realized through phase conjugate driving and spectrum inverse diffusion gating, so that safe operation of a light field and soft and stable brightness are ensured, and a comfortable and healthy digital twinborn travel light environment is created.

The invention provides an optical computing system, a computing compensation method and a photonic integrated circuit chip. The optical computing system includes: a beam splitter which divides an optical wave input to the optical computing system into a first branch and a second branch according to a preset proportion; the calculation module is configured to receive the light wave of the second branch, load an electric signal to the light wave of the second branch to form a light signal, and calculate information represented by the light signal; the monitoring module is configured to receive a first branch of the light wave and monitor the light wave of the first branch in real time; and the post-processing module is configured to perform compensation operation on the calculation result output by the calculation module according to the monitoring result obtained by the monitoring module through monitoring. According to the invention, the extra monitoring module is arranged to monitor the change of the incident light power of the chip in real time, and the calculation precision is compensated in real time based on the change.

The invention relates to the technical field of chip preparation, and provides a chip based on an annular photonic crystal and a preparation method thereof. The preparation method comprises the following steps: growing a nucleating layer on a substrate; growing a superlattice structure on one side, away from the substrate, of the nucleating layer; sequentially growing an n-type coating layer, an n-type waveguide layer, a quantum well and a p-type electron blocking layer on one side, deviating from the nucleating layer, of the superlattice structure; etching a plurality of annular cavities on the p-type electron barrier layer to form an annular photonic crystal; growing a p-type extension contact layer on one side, deviating from the quantum well, of the p-type electron blocking layer; and carrying out in-situ annealing treatment. According to the preparation method, the directivity of the photonic band gap can be effectively adjusted, uniform light waves in all directions on the side face can be formed, so that leakage of laser from a non-light-emitting area on the side face is restrained, the light emitting efficiency is improved, the annular photonic crystals are periodically distributed, and the light beam quality is effectively guaranteed.

A tunable laser assembly housed in a single enclosure and a method of control is described wherein the tunable laser, pump and semiconductor optical amplifier do not share a common optical axis but are all aligned to optical waveguides on an intervening planar lightwave circuit (PLC). Wavelength monitoring circuitry is included on the PLC to enable monitoring and control of the tunable laser center wavelength and optical bandwidth. The design of the PLC does not introduce perturbations into the swept-source laser output spectrum that would cause artifacts in imaging applications such as optical coherence tomography (OCT).

The invention relates to a black coating with adjustable infrared emissivity and a preparation method and application thereof, and belongs to the technical field of optical and infrared coatings, the black coating comprises a black filler, resin and flaky aluminum powder in a mass ratio of 1: (0.3-1.5): (0-2.2). The black coating provided by the invention is black in the visible light wave band and has high visible light absorptivity and low infrared emissivity, and the infrared wave emissivity of the coating and the temperature under infrared thermal imaging can be regulated and controlled by regulating the dosage ratio of the flaky aluminum powder to the black filler in the black coating; and the use requirements of three-dimensional visualization effects of the planar model in the visible light band and the infrared band in different regions, different seasons and different moments can be met.

The invention discloses a visible light wave band spectral response function inversion method which comprises the following steps: acquiring a satellite on-orbit spectral response function and atmospheric top hyperspectral reflectivity simulation data through data simulation, and calculating satellite on-orbit reflection data through a forward model; determining a target function of the inversion model according to the satellite in-orbit reflection data; determining constraint conditions of the inversion model; training the inversion model through a linear programming solver to obtain a trained inversion model; and inputting the atmospheric top hyperspectral reflectance data and the satellite reflectance value into the trained inversion model to obtain a corresponding spectral response function. According to the satellite visible light wave band and the satellite characteristics, an inversion algorithm based on linear programming is used, and sufficient prior information of a target satellite is fully utilized to formulate reasonable constraints; and a visible light wave band spectral response function inversion method with universality and robustness is obtained.

The invention discloses an intelligent seabed energy detection system and method based on visible light communication, and belongs to the technical field of deep sea detection, the detection system comprises a data acquisition system (1) and a visible light communication system (2), the data acquisition system (1) structurally comprises a high-definition camera (11), an underwater sensor (12) and a first analog-to-digital converter ADC (13), the visible light communication system (2) structurally comprises a transmitting end and a receiving end; the detection method comprises the steps of front-end acquisition, signal conversion, signal processing, optical signal transmission and signal restoration. The characteristics of high frequency and large bandwidth of light waves are utilized, the intensity of light is modulated, binary code element signals are converted into optical signals, the optical signals are received through the photoelectric detector for underwater information transmission, efficient and real-time submarine energy monitoring and analysis are achieved, and comprehensive technical support is provided for development and utilization of submarine energy.

The invention discloses a vernier sensitization vacuum pressure sensor based on optical fiber end face interference, and relates to the technical field of film sensors. The problem of low measurement precision caused by electromagnetic interference of a traditional capacitive film pressure sensor is solved. An interference cavity formed between the lower end face of the center optical fiber of the separated vernier assembly and the pressure sensing diaphragm serves as a sensing cavity for pressure detection, the sensing cavity (an optical fiber Fabry-Perot structure) formed by the pressure sensing diaphragm and the center optical fiber is adopted to replace a capacitor structure, optical waves are used for measurement, electric signals are not transmitted in the optical fiber, and the measurement precision is high. Therefore, the cable has excellent anti-electromagnetic interference and long-distance transmission capabilities. The pressure sensor is mainly used for pressure measurement.

An optical modulator with which electrical connection between a signal electrode and signal wiring of a wiring substrate can be reliably made even in a case where a width of the signal electrode in an action portion of an optical control substrate is narrow is provided. An optical modulator includes an optical control substrate (1) that includes an optical waveguide (OW) including at least a branched waveguide which branches one light wave into two light waves, and that includes a control electrode for applying an electrical field to the branched waveguide, and a wiring substrate provided with a wiring which relays an electrical signal to be applied to the control electrode or with a wiring which terminates the electrical signal, in which the control electrode is provided with a signal electrode(S), the wiring is provided with signal wiring, and in a part (Sc) in which electrical connection is made between the signal electrode(S) and the signal wiring, a clearance (W1) in which the branched waveguide (OW) sandwiches the signal electrode is wider than a clearance (W2) in which the branched waveguide sandwiches the signal electrode in an action portion in which the control electrode applies the electrical field to the branched waveguide.

The invention discloses a heart rate self-calibration monitoring system and method based on a deep learning model, in the system, a data acquisition module acquires an ECG signal, a multiband PPG signal and an acceleration signal; the data processing module filters and amplifies the signals acquired by the data acquisition module; the analog-to-digital conversion module performs analog-to-digital conversion on an output signal of the data processing module; the state detection module classifies user states based on the acceleration signals; the signal calibration module is used for dynamically adjusting the wave band weight of a light-emitting wave acquired by the PPG signal according to a user state to obtain a weighted and optimized multiband PPG signal, and adjusting the wave crest position of the PPG signal according to the R wave position in the ECG signal to complete calibration of the PPG signal; the heart rate calculation module performs heart rate prediction based on a deep learning model and outputs a heart rate prediction result; and the interaction module transmits the heart rate prediction result. According to the invention, stable and accurate heart rate monitoring can be provided.

A method for processing a radar signal based on a photonic fractional Fourier transformer comprises: transmitting a linear frequency modulation signal to targets to be detected, receiving echo signals of the targets to be measured, and loading the linear frequency modulation signal and the echo signals onto a single-frequency optical wave by an electro-optical modulator (S1); respectively biasing a sub-modulator and a parent modulator of the electro-optical modulator at different bias points, modulating the single-frequency optical wave by the electro-optical modulator based on the linear frequency modulation signal and the echo signals, and outputting a modulated optical signal (S2); converting the modulated optical signal by a photoelectric detector to a photocurrent (S3); and performing Fourier transform on the photocurrent to obtain a fractional Fourier spectrum, and obtaining distance information of the targets to be measured according to peak positions of each pulse signal in the fractional Fourier spectrum (S4).

In combined methods for treating a patient using time-varying magnetic field, treatment methods combine various approaches for aesthetic treatment. A magnetic field generating device is placed proximate to a body region of the patient. The magnetic field generating device generates a time-varying magnetic field with a magnetic flux density in a range of 0.5 to 7 Tesla. The time-varying magnetic field is applied to the body region of the patient in order to cause a contraction of a muscle within the body region. A second therapy may be used by applying one or more of optical waves, radio frequency waves, mechanical waves, negative or positive pressure or heat to the body region of the patient.

The utility model discloses a left-handed and right-handed light wave beam chiral deflection device based on a plasma metasurface, and relates to a nanometer optical technology. Comprising a metasurface which is formed by periodically arranging a plurality of super-cells, each super-cell is composed of eight super-atoms, the latter super-atom in each super-cell rotates by 11.25 degrees anticlockwise compared with the former super-atom, and the size of the latter super-atom in each super-cell is changed compared with the size of the former super-atom. The metasurface device can work in an optical wave band and has a chiral function of left-handed and right-handed optical decoupling. The chiral function is realized by utilizing the cooperative regulation and control of the superatoms on the transmission phase and the geometric phase, so that the metasurface does not form the phase gradient for right-handed rotation light and forms the phase gradient for left-handed rotation light in the horizontal direction. When right-handed light enters the metasurface, normal specular reflection of a reflection wave beam occurs according to a conventional Snell law; and when the left-rotation light enters, the reflected wave beam is subjected to abnormal non-specular reflection at a certain angle according to the generalized Snell law.

Method and apparatus for directing pulsed light beams at an in vivo treatment site to create thermoelastic expansion of tissue which generates ultrasonic pulse waves in the mega hertz range. One or more photosensitizers are applied to the treatment site. Further, the ultrasonic pulse waves either singly, or in combination with the pulsed light waves cause the activation of the photosensitizers to generate singlet oxygen at the treatment site.

The invention discloses an auditory disorder patient rehabilitation training system based on virtual reality. The system comprises a perception fusion module, a basic perception reconstruction module, a language content integration module, a rehabilitation training module and a virtual reality auxiliary module. The invention belongs to the technical field of auditory rehabilitation training, and particularly relates to an auditory disorder patient rehabilitation training system based on virtual reality, which adopts a multi-stage cross-modal attention-enhanced voice audiovisual characterization method, converts sound signals into visual light waves and tactile vibration data through a deep learning model, and displays the visual light waves and tactile vibration data on the basis of the visual light waves and tactile vibration data. High-precision and real-time multi-modal data fusion is realized; basic auditory reconstruction is carried out by adopting an audio frequency generation dynamic adjustment method combined with voiceprint dynamic mapping, personalized sound scene mapping is effectively and dynamically generated, and a patient is helped to reconstruct basic perception ability for sound; a cross-modal contrast learning method is adopted to assist lip language synchronous training, and voice context background prompts are provided in the rehabilitation training process.