72 results about "Phase drift" patented technology

The invention discloses a data processing method and system of a chromatographic instrument, and relates to the technical field of data processing, and the method comprises the following steps: collecting whole-course original detection signals and external interference signs generated in a chromatographic analysis process, carrying out time alignment under a unified time scale, generating an interference rhythm index, and calculating the interference rhythm index; the reference is used as a unified reference for subsequent signal comparison; and based on the interference rhythm index, performing phase drift comparison on the acquired signal, calculating the phase difference between the detection signal and the interference signal, drawing a beat frequency wandering graph, extracting candidate signal segments of pseudo-period interference according to beat frequency change, and generating a pseudo-period candidate segment list. According to the invention, by establishing the interference rhythm index and comparing the interference rhythm index with the phase drift, the time decoupling of the detection signal and the interference signal is realized, and the sampling anti-interference capability is improved; and through dynamic control of a false peak characteristic fingerprint draft and a misjudgment reason table, signal rhythm correction and peak identification optimization are completed, so that the detection accuracy and the data stability are improved.

The invention relates to the technical field of X-ray imaging, and discloses an X-ray grating comprehensive imaging information extraction method and system. The method comprises the steps of obtaining and preprocessing original data; acquiring multi-dimensional interference parameters formed by grating phase drift distance, photon statistical noise density and imaging object deformation rate; dynamically calculating a phase correction coefficient, a noise suppression weight and information extraction confidence; phase compensation and noise filtering are executed based on the confidence coefficient, and structure and density information is extracted; parameter changes are monitored in real time, and the extraction process is updated; the system correspondingly realizes the method. The problem of low dynamic scene information precision caused by multi-interference coupling is solved, and the imaging information extraction stability and quality are improved.

The invention discloses a photoetching machine multi-light-source cooperative high-precision exposure control system, and relates to the technical field of photoetching machine control. Initial energy parameters of all light sources are obtained, a coupling feature set of energy change and light spot morphology change is constructed, and light intensity errors, phase errors and light spot distortion errors are used as input, so that a multi-light-source cooperative high-precision exposure control system is constructed; respectively generating an inter-light-source time sequence offset matrix and a light source energy compensation matrix, constructing a light source collaborative error model through matrix superposition and eigenvalue decomposition, inputting exposure disturbance obtained by real-time monitoring of a photoetching machine into the error model, and obtaining a primary compensation amount; a final target exposure compensation parameter is obtained by adopting a quadratic optimization algorithm under a constraint condition, and light source energy output, a light path phase and a pulse trigger time sequence are cooperatively adjusted according to the target exposure compensation parameter, so that energy deviation, phase drift and time sequence mismatch can be reduced at the same time, the exposure stability and the pattern forming precision are remarkably improved, and the image forming precision is improved. The method is suitable for high-resolution and multi-light-source photoetching equipment.

The invention relates to the technical field of fruit quality detection, and discloses a fruit quality detection method and system based on multispectral structured light, and the method comprises the steps: firstly collecting a structured light image sequence and a spectral intensity image of a to-be-detected fruit, and solving an initial truncation phase field; performing subsurface scattering phase reverse compensation on the initial truncation phase field by using a spectral intensity image, and reconstructing a unit normal vector field of the surface of the fruit to be measured through unwrapping; carrying out physical reverse compensation on the spectral intensity image by utilizing a unit normal vector field and an illumination direction vector, and decoupling to obtain real spectral reflectivity distribution; and finally, outputting a comprehensive grading result of the to-be-detected fruit by fusing the geometrical morphology characteristics and the spectrum biochemical characteristics. According to the method, the phase is corrected by calculating the gray absorption item and the gradient scattering item of the image, so that the problem of phase drift caused by light permeation due to the semitransparent fruit skin is effectively solved, the depth measurement error caused by light diffusion in a medium is eliminated, and the fruit detection precision is further improved.

The utility model discloses a system for measuring the half-wave voltage of a phase modulator. The system comprises a laser generation module, an optical coupler, a first phase modulator, a second phase modulator, a first Faraday mirror, a second Faraday mirror, a signal generator, a photoelectric detector and an oscilloscope. The utility model discloses a system for measuring the half-wave voltage of a phase modulator, which is characterized in that a high-frequency periodic square wave electric signal is loaded to a second phase modulator through a signal generator, and the phase drift amount caused by unstable factors such as a light source, an optical device and an external environment can be regarded as perturbation in a small time period; the half-wave voltage of the second phase modulator is obtained by accurately calculating the variable quantity of the number of the peak (valley) values of the sine (cosine) waveform, so that the judgment on the light intensity extreme point of an interference pattern is avoided, the measurement precision is improved, and the key core application in the fields of quantum communication and quantum calculation is realized.

This invention discloses a method, electronic device, and storage medium for ultra-large-scale MIMO synchronization, relating to the fields of wireless communication and channel measurement technology. The method includes: first, estimating the delay and direction parameters of at least one strong path as an anchor path based on reference subarray channel data; then, for each pair of adjacent subarrays, extracting the phase of the same path on the boundary elements based on the anchor path parameters, calculating the observed phase difference, and thus obtaining the observed value of the common phase drift between subarrays; next, fusing multiple observations to obtain a robust estimate of the common phase difference between adjacent subarrays; finally, accumulating the estimated values ​​of each segment with the first subarray as a reference to obtain the common phase drift of each subarray, performing phase compensation, and then stitching the data of each subarray according to coordinates into an equivalent ultra-large-scale array to achieve ultra-large-scale MIMO synchronization. Therefore, this invention can estimate and compensate for the common phase drift of subarrays without additional hardware time synchronization.

This application relates to a satellite-to-ground frequency synchronization system and method. The system includes: a communication satellite transponder for receiving uplink signals transmitted by a ground synchronization system, generating a beacon signal and a first downlink signal, combining the first downlink signal and the beacon signal to obtain a combined signal, and then transmitting the combined signal back to the ground synchronization system; and a ground synchronization system for receiving the combined signal, separating the combined signal to obtain the first downlink signal and the beacon signal, eliminating phase drift of the first downlink signal based on the beacon signal to obtain a second downlink signal, and determining uplink phase compensation, downlink phase compensation, and beacon phase compensation based on the second downlink signal and the uplink signal. These uplink phase compensation, downlink phase compensation, and beacon phase compensation are then used for signal phase compensation during subsequent signal transmission and reception. This method can eliminate phase drift of onboard crystal oscillators and improve satellite-to-ground frequency synchronization accuracy.

A method for synchronous excitation of multiple exciters relates to the field of dynamic testing and vibration control technology for large civil structures. The method includes the following steps: after constructing a unified time reference based on satellite navigation signals and a rubidium atomic clock, excitation amplitude and phase parameters are obtained based on the target modal requirements, and these parameters are sent to all exciter slave stations; the exciter slave stations generate a reference trajectory based on the excitation amplitude and phase parameters, enabling the exciter motor shaft angle to follow the reference trajectory in real time and output the target excitation; the phase error is obtained based on the measured excitation phase value and the reference trajectory, and then the motor angular velocity of the exciter is corrected based on the phase error. This invention solves the problems of startup phase error and long-term frequency drift in master-slave triggering schemes, ensuring synchronous start-up of all exciters. Combined with dynamic correction of the exciter motor angular velocity, it suppresses phase drift during long-term operation, significantly improving the excitation efficiency of higher-order modes and the clarity of the response signal.

The invention provides a frequency distribution system and method based on a fractional frequency division phase-locked loop, and the method comprises the steps: embedding a clock signal in a data link through a serial transceiver, precisely extracting an upstream reference clock from a data stream at a receiving end through a clock data recovery unit, and then obtaining a phase difference through a high-precision phase discriminator based on the fractional frequency division phase-locked loop, and the reconfigurable digital loop filter performs proportional-integral operation and noise filtering to generate a control signal to drive the phase-locked loop to output a local clock synchronous with the reference clock. The system realizes accurate regeneration and transmission of frequency information and phase information among multiple stages of nodes, effectively inhibits accumulated phase drift, reduces transmission jitter, avoids high-cost deployment of special optical fibers, remarkably improves the frequency distribution accuracy and stability, and has a wide application prospect. And a low-cost and high-flexibility synchronization solution is provided for large-scale networking.

The application discloses a photolithography machine multi-light-source cooperative high-precision exposure control system and relates to the technical field of photolithography machine control. The initial energy parameters of each light source are acquired, a coupling characteristic set of energy variation and light spot appearance variation is constructed, light intensity error, phase error and light spot distortion error are taken as inputs, a time sequence offset matrix between the light sources and a light source energy compensation matrix are respectively generated, a light source cooperative error model is constructed through matrix superposition and eigenvalue decomposition, exposure disturbance obtained by real-time monitoring of the photolithography machine is input into the error model, the final target exposure compensation parameters are obtained by using a quadratic optimization algorithm under a constraint condition after the preliminary compensation amount is obtained, the light source energy output, the light path phase and the pulse trigger time sequence are cooperatively adjusted according to the target exposure compensation parameters, the energy deviation, the phase drift and the time sequence mismatch can be simultaneously reduced, the exposure stability and the pattern shaping precision are significantly improved, and the application is suitable for high-resolution and multi-light-source photolithography equipment.

A method for eliminating phase drift in distributed acoustic sensing, comprising: acquiring each signal component in a distributed acoustic sensing system and performing phase demodulation to obtain the phase value of each signal component at the current moment (S1); initializing a Kalman filter and, for each signal component, by means of a Kalman filter time update equation, updating the priori estimate covariance at the current moment on the basis of the posteriori estimate covariance at the previous moment (S2); for each signal component, substituting the priori estimate covariance at the current moment into a Kalman gain equation to calculate a Kalman gain coefficient (S3); on the basis of the phase value and the Kalman gain coefficient of each signal component at the current moment, calculating a phase drift estimated value of each signal component at the current moment and updating the posteriori estimate covariance of each signal component at the current moment (S4); and using the phase value and the phase drift estimated value of each signal component at the current moment to calculate drift-free phase values at the current moment and outputting same, thus eliminating the phase drift of each signal component at the current moment (S5). The method is applicable to various distributed acoustic sensing systems, and can eliminate the phase drift of each signal component to keep the phase consistency of each signal component in real time.

The present application relates to the field of data storage, in particular to a kind of dynamic interlayer crosstalk suppression multilayer optical storage data reading method and system.The present application includes the following steps: through low-coherence interferometer, the layer analysis interference signal of target data layer in multilayer optical storage medium is collected, and the spatial frequency characteristic of adjacent data layer is synchronously obtained, the spatial frequency characteristic includes power spectral density, frequency bandwidth and phase distribution parameter.The present application is first realized to the dynamic analysis of transient coherent crosstalk intensity through the frequency domain convolution quantization of coherent coupling coefficient and the generation of depth network weight.The real-time aperture control (0.45-0.85 NA continuously changes) of variable aperture diaphragm is used to match the priority of frequency band suppression, break through the band-limited constraint of traditional fixed filter;combined with multichannel interference reference light path and second-order differential compensation algorithm, the interlayer spacing error is compressed to submicron level, and the phase drift caused by medium refractive index gradient is effectively suppressed.

This application provides a fault identification method based on UHF phase characteristic changes, belonging to the field of fault identification technology. The method includes: acquiring the original electromagnetic signal of the target power equipment, performing preprocessing and phase demodulation to generate initial phase time series data; extracting the phase consistency coefficient, phase mutation index, and phase drift gradient within a preset time window to construct an initial three-dimensional phase feature vector; dynamically correcting the initial three-dimensional phase feature vector based on preset performance parameters of the phase-locked loop and historical data processing errors to generate an optimized three-dimensional phase feature vector; inputting the vector into a pre-trained fault classification model to calculate the matching probability between the output and each typical fault mode; performing multi-dimensional decision analysis based on the matching probability and the correlation weight matrix to identify and output the fault type identification result. This method solves the technical problems of insufficient identification accuracy and low precision in existing fault identification methods based on UHF phase characteristics.

The invention relates to the field of optical fiber sensing, in particular to a phase compensation method and device, electronic equipment and a storage medium. The phase compensation method comprises the following steps: acquiring a first temperature measurement value and a first phase measurement value; determining a first temperature effect value based on a preset temperature effect calculation model and the first temperature measurement value, wherein the first temperature effect value is used for representing the influence of the first temperature measurement value on the phase drift; calculating a posterior drift estimation value at the first moment based on the first temperature effect value to obtain a first posterior drift estimation value; phase compensation is performed on the first phase measurement value based on the first posteriori drift estimation value. According to the invention, the phase drift of the DAS signal caused by temperature can be compensated, and the detection precision of the DAS system is improved.

The application discloses a weak value amplification light beam deflection measurement system and method based on phase control, and belongs to the technical field of precise optical measurement. The system comprises a laser light source, a polarization state preparation module, a Sagnac interferometer and a detection module. The phase control unit built in the interferometer adopts a specific wave plate combination scheme to introduce a geometric phase, and has the advantages of simple structure, convenient debugging, no need for complex matching control equipment, utilization of the linear relationship between the wave plate rotation angle and the system phase difference, realization of accurate phase control. Meanwhile, by utilizing the common mode rejection characteristic of the Sagnac interferometer, the phase drift problem caused by path separation of the traditional double optical path interferometer is solved from the physical structure. The application can realize high-sensitivity and high-signal-to-noise-ratio precise measurement of micro-radian level light beam deflection, and is suitable for the precise detection demand of the light beam deflection quantity in the precise optical field.

The invention provides an observation constellation configuration control method and device based on a maximum allowable drift domain, and belongs to the technical field of universe navigation. According to the method, based on the observation performance of a target constellation on the surface of a central celestial body, a critical equivalent view field is obtained through geometric equivalence, and a maximum allowable drift domain is obtained through analysis and derivation. And determining a first maximum permissible drift distance (namely, a phase maximum permissible drift distance) and a second maximum permissible drift distance (namely, an ascending node right ascension maximum permissible drift distance) from the maximum permissible drift domain in an inscribed interception mode, and taking the first maximum permissible drift distance and the second maximum permissible drift distance as target constellation configuration control threshold values, so as to realize configuration control on the target constellation. According to the method, the calculation amount required for determining the maximum allowable drift distance is reduced, so that the precision of the maximum allowable drift distance is improved under the same calculation power, and the configuration control effect of the target constellation is improved.

The invention discloses a confocal optical path system and method for suppressing stray light, and belongs to the technical field of optical precision measurement. According to the invention, the beam expander is moved forwards by 2-5 mm relative to the flat beam splitter prism, so that the light beam incident to the core beam splitter is actively converted into the Gaussian beam with the specific divergence angle from the parallel light, and is coupled with the symmetrically arranged confocal light paths, thereby solving the problem that in the existing heterodyne laser vibration measurement technology, the parallel light generates multi-path reflection on the surface of a planar optical element, so that the measurement precision is greatly improved. In the prior art, a stable parasitic interference cavity is formed, high-order and dynamic nonlinear errors and phase drift are introduced, and the technical problems of system complexity, high cost and difficult installation and adjustment caused by traditional suppression means (such as off-axis design and an ultrahigh antireflection film) are solved, the spatial coherence of stray light and main signal light is destroyed, the stray light intensity in the system is suppressed by about two orders of magnitude, and the system stability is improved. The non-linear distortion of a measurement signal is significantly reduced, and the adjustment tolerance and long-term stability of an optical path are improved at the same time.

The present application relates to a kind of wide frequency power grid harmonic fast extraction method based on multiscale collaborative measurement, belong to the field of power system harmonic analysis, including: construct multi-window parallel data buffer, utilize smooth transition function dynamically calculate the confidence weight of each window;Adopt adaptive window function strategy to load rectangular window and Blackman window respectively, and preliminary obtain full-band spectrum parameter in combination with zero padding FFT, introduce phase alignment algorithm based on time zero point to eliminate the phase drift caused by non-synchronous sampling;For random interference, use stability filtering mechanism to carry out effectiveness check.The present application realizes the unity of wide frequency harmonic transient fast locking and steady-state high-precision measurement by organically combining multi-window parallel processing with S-shaped smooth transition mechanism, significantly improves the dynamic adaptability and anti-noise reliability of measurement, and provides reliable technical foundation for new type power system wide frequency oscillation monitoring and control.

The application discloses a frequency diversity array time domain beam control method based on dynamic frequency offset and belongs to the field of microwave and radio frequency electronic technologies. The method comprises the following steps: obtaining a transmission time window and a target angle corresponding to a target beam pointing direction in the transmission time window; in the duration of the transmission time window, based on the target angle, dynamically determining a frequency offset increment between each array element in the frequency diversity array, wherein the frequency offset increment is in inverse proportional relationship with the value of an equivalent time parameter; based on the frequency offset increment, controlling each array element of the frequency diversity array to transmit a signal of a corresponding frequency, so that the synthesized beam continuously points to the target beam pointing direction in the transmission time window. Through dynamic phase compensation, the application offsets the phase drift caused by time accumulation; meanwhile, while reducing the bandwidth requirement, the application physically eliminates beam distortion by using frequency symmetric distribution.

The invention relates to the technical field of camera shooting, and discloses a hundred-million-pixel high-definition video acquisition module, which performs delay measurement on trigger signals of output channels connected with nodes, executes path reconfiguration operation through a crossbar switch array when obvious delay deviation between the channels is detected, and performs path reconfiguration operation through the crossbar switch array after a topological structure is stable. The phase difference of trigger signals of all output channels is continuously monitored, when it is detected that the phase drift between adjacent channels exceeds a threshold value, a phase compensation signal is generated, time compensation is applied to the corresponding channel, and therefore time compensation is achieved through cooperative work of delay self-balancing and phase fine adjustment. The delay equalization of a trigger path level and the phase synchronization of a clock level can be realized at the same time, so that synchronous exposure and time sequence consistent acquisition of a multi-channel video acquisition unit in a high-resolution state are ensured, and stable frame-level alignment and image fusion quality can still be kept under the conditions of high resolution and ultra-wide field of view; therefore, the definition and the space continuity of panoramic video output are improved.

This invention discloses a wide-temperature-range phase drift adaptive compensation system for a liquid crystal phased array antenna, relating to the field of antenna technology. It includes a distributed temperature sensing network unit for real-time acquisition of two-dimensional temperature field distribution data of the antenna array surface; an online identification unit for online identification of real-time temperature change parameters of the liquid crystal material based on the temperature field distribution data; a multi-physics coupling prediction unit for calculating the expected phase drift of each array element, including the dielectric temperature change phase error, thermal expansion phase error, and driving drift phase error of the liquid crystal layer, based on the temperature field distribution data and real-time temperature change parameters; a pre-compensation unit for pre-calculating the expected phase drift based on the current temperature field distribution and temperature change rate, and pre-adding the compensation amount to the beam control codeword; and an update unit for iteratively updating the model parameters by measuring the residual through the near-field coupling calibration network and feeding it back to the multi-physics coupling prediction unit.

A board card, a case, a clock distribution circuit and system applied to quantum computing belong to the technical field of quantum computing; wherein the clock distribution adopts a homologous double-channel architecture: a high-precision clock source synchronously outputs a high-speed clock and a low-speed clock; the high-speed channel converts the high-speed clock electrical signal into a high-speed clock optical signal through microwave modulation of a light source, is amplified in optical power, is split by an optical splitter, is distributed to each case control board card through an optical fiber, is converted into a high-speed clock electrical signal by a PD detector, and is supplied to a DAC for use as a high-speed sampling clock; the low-speed channel accesses each case control board card through a radio frequency cable, is distributed after Buffer and PLL, is multiplied or divided, and is supplied to an FPGA and a DAC for use as a synchronous communication clock; the problem of multiple PLL clock asynchronization is solved, and the problems of phase drift, impedance mismatch, and temperature-sensitive jitter of existing radio frequency cable transmission are solved, and the phase stability of quantum bit control is significantly improved.

The present application relates to the technical field of industrial detection, and especially relates to a large-window transmission wavefront high-precision detection system and method, which is suitable for large-diameter window optical components with a diameter of no less than 1200 mm. A standard spherical mirror is self-detected and calibrated to obtain surface reference data, and a stable transmission detection light path is constructed in combination with a laser tracker to establish a spatial coordinate relationship. In the detection process, a thermal stability determination and low-order drift compensation strategy based on transmission wavefront timing is introduced, low-order aberration decomposition, change rate determination and drift modeling are performed, low-order phase drift caused by thermal gradient and environmental disturbance under large-diameter conditions is effectively inhibited, and the accuracy and consistency of the transmission wavefront detection result are improved.

This invention discloses a clock synchronization control method and system for an optical communication sub-control board, relating to the field of clock synchronization technology. The method includes: acquiring and recovering a clock signal and detecting the current locking mode; determining the processing delay mode corresponding to the transmission path within the sub-control board based on the current locking mode, and calculating the corresponding path delay factor based on the processing delay mode; constructing a mapping model between the processing delay mode and the phase drift amplitude of the recovered clock based on the path delay factor and the phase measurement value of the recovered clock signal; determining the link transmission delay of the sub-control board in the current locking mode based on the mapping model, and outputting a synchronized clock after delay compensation of the phase drift amplitude of the recovered clock based on the link transmission delay. This invention achieves clock synchronization control based on the evolution of the board's internal processing state, which helps reduce timing deviations caused by state switching.

The application discloses a kind of inhibiting device and method of superconducting accelerator low level detection channel phase drift, comprising: electric length detection system, reference following system, low level system with slow drift inhibition control function, electric control timing distribution system;The application is arranged with the same length, texture and position layout coaxial cable same as cavity pickup signal acquisition cable, and input radio frequency signal same as reference signal homologous phase.The full reflection signal of electric length detection cable is compared with reference signal in phase, and low level detection signal is compensated according to its phase difference.Finally, the effect of inhibiting superconducting accelerator low level detection channel phase drift is achieved.The structure is simple, the feedback speed is fast, the practical effect is good, and the phase detection accuracy of low level system and the long-term stability of free electron laser device can be effectively improved.

The invention provides a metal detector single-path signal feature extraction method and system. The metal detector single-path signal feature extraction method comprises the steps of S1, generating a homologous reference signal based on a transmitting signal; s2, performing frequency mixing digital phase locking amplification processing by using the homologous reference signal and the received signal so as to realize extraction and enhancement of effective components in the received signal; and S3, performing feature extraction based on the processed signal for subsequent target identification and classification. According to the method, by constructing the homologous reference signal, the phase drift problem caused by a traditional local oscillator structure is avoided, the consistency and stability of signal processing are improved, and the method is suitable for a metal target detection task in a complex environment.

This invention discloses a method and system for identifying abnormal tuning fork limit signals, relating to the field of data processing for industrial sensor signals. The method includes: applying an active excitation cutoff operation to the piezoelectric drive chip of the tuning fork sensor at a preset trigger frequency and cutting off the electrical excitation signal input within the excitation cutoff time window; acquiring the free decay waveform of the piezoelectric receiving chip; extracting the energy decay asymmetry, the absolute total energy integral value across the window, and the phase drift variation coefficient to construct a multi-dimensional feature vector; inputting this vector into a machine learning-based media state classification model for prediction, obtaining classification results for empty state, normal full state, and vortex street self-excited full abnormal state; outputting the corresponding limit signal based on the classification results and triggering an alarm when an abnormality occurs. This invention solves the problem of missed full-material alarms caused by Karman vortex street resonance lock-up that may be caused by high-velocity media scouring the tuning fork.

The application discloses a high-sensitivity Raman detection method and device based on a MOEMS scanning grating, and belongs to the technical field of optical detection, and the technical solution points of the application are as follows: a continuous laser light source is used for emitting continuous laser light; a light chopper is used for pulse-modulating the continuous laser light, and the pulse-modulated laser beam is incident to a light splitting sheet or a silicon photodiode; a spectrometer is used for splitting the pulse Raman scattering light signal, obtaining a measured signal, and inputting the measured signal into a phase-locked amplifier, and the spectrometer comprises a MOEMS scanning grating structure; and the phase-locked amplifier is used for obtaining the amplitude of the pulse Raman scattering light signal according to the measured signal, wherein the application modulates the continuous laser light through a double-ring light chopper, two reference signals with a 90-degree phase difference are obtained by using the physical structure of the light chopper, the MOEMS scanning grating splitting technology is adopted, the vector operation is combined with the double-path phase-locked amplification technology, the real signal amplitude is extracted, and the influence of phase drift is eliminated.

The utility model discloses a measuring device for half-wave voltage of a phase modulator. The measuring device comprises a laser, a signal generator, an interferometer, photoelectric detection equipment and measuring equipment, one arm of the interferometer is provided with a phase modulator to be measured; the signal generator is a pulse signal generator. The utility model discloses a device for measuring the half-wave voltage of a phase modulator, which is characterized in that a pulse modulation electric signal is output by a pulse signal generator to drive a phase modulator to be measured, so that the adverse effect of interference optical signal phase drift on the half-wave voltage measurement can be effectively eliminated, and the accurate measurement of the half-wave voltage is realized. And the optical path is simple in structure and easy to construct, and is widely applied to a QKD system and a quantum measurement and metering system.

This invention discloses a 3D visualization and intelligent control platform, relating to the field of 3D visualization technology. It constructs a continuous temporal buffer zone for the 3D flow field, rearranging the time indices of adjacent frames to form a sliding interval before transient switching. Based on this interval, a flow direction matching window is embedded, and streamlines are corrected using inter-frame velocity vector differences, introducing a directional channel. Accordingly, a local anti-phase shielding layer is set to suppress anti-phase rendering. An energy consistency path is established between the rendering layer and the control logic layer to achieve visual and logical flow direction unification. Control commands are issued with a delay according to the actual flow direction rhythm through a rhythmic ventilation mapping chain. This invention, by constructing a continuous temporal buffer zone, a flow direction matching window, and an energy consistency path, achieves time and direction synchronization of the 3D flow field, eliminates phase drift and anti-phase rendering, and dynamically unifies the rendering layer and the control logic layer, improving the visual stability, control accuracy, and operational safety of the ventilation system under complex operating conditions.