42 results about "Pulse intensity" patented technology

The invention relates to the technical field of health monitoring of an electric energy supply system, and discloses a product appearance defect detection method based on machine vision, which comprises the following steps: acquiring original image data from a controlled loop entity, and calculating a local structure tensor matrix of a sampling point; determining a dominant texture direction through intrinsic decomposition operation, extracting a tensor trace sequence along the direction, and calculating a space axis change rate so as to identify a non-stationary pulse; adjusting the gain weight of a projection operator according to the pulse intensity, completing the orthogonal projection transformation under the constraint of the texture direction, generating a deviation response diagram, and outputting an alarm signal, and achieving the physical separation of the background texture and the same-direction deviation signal through the tensor energy flow evolution analysis. The problem of feature coupling masking in appearance detection of the current-carrying loop entity is solved, and the physical damage detection sensitivity of the electric energy supply loop entity is enhanced.

The invention provides a heterojunction-based multi-mode photoelectric synapse device and a preparation method thereof. The heterojunction-based multi-mode photoelectric synapse device comprises a bottom electrode, a memristive functional layer, a photosensitive layer and a top electrode which are stacked in sequence, the memristive functional layer comprises metal oxide rich in oxygen vacancies and is provided with a micro-nano structure surface; the photosensitive layer covers the surface of the micro-nano structure of the memristive function layer, and forms a heterojunction interface with the memristive function layer; the oxygen vacancies and the heterojunction interface act synergistically, so that the device can respond to changes of optical signals, ambient temperature and ambient oxygen partial pressure at the same time, and the optical pulse intensity and the optical response current generated by the device have a non-linear relationship. Through cooperative regulation and control of an oxygen vacancy and a heterojunction interface, the device can respond to changes of an optical signal, environment temperature and environment oxygen partial pressure at the same time, a non-linear relation exists between optical pulse intensity and optical response current generated by the device, and then the function of integrating multi-mode sensing and sensing storage calculation is achieved.

The invention discloses a satellite switching method and device, equipment, a storage medium and a program product. The method comprises the following steps: performing communication quality prediction based on historical communication index data, reflected pulse intensity data and spatial position data, and determining predicted communication quality data; and performing communication demand analysis based on the communication service parameters of the user satellite communication equipment, and determining communication demand data. And matching at least one target satellite from the plurality of satellites to be selected based on the communication demand data and the predicted communication quality data. According to the technical scheme provided by the invention, the continuity and stability of communication connection of a user in a satellite communication process are fully guaranteed, and the problem of lagging or interruption in real-time communication services such as satellite communication is effectively avoided. According to the technical scheme provided by the invention, satellite switching can be flexibly adjusted and formulated according to the current service demand of the user, smooth and stable execution of the service is ensured, and the user experience is effectively improved.

An illustrative transmitter can achieve improvement in SN ratio and stability of the signal output under control at the transmission side, even in the case of an optical transmission line having the propagation characteristics susceptible to environmental changes. The transmitter includes: an optical transmission section configured to generate weak signal light and reference light from a transmission light pulse, and transmit the signal light and the reference light to the optical transmission line; and a controller configured to modulate pulse intensity and pulse width of the transmission light pulse according to a transmission line state of probe light having propagated through the optical transmission line.

A driving device includes a pulse intensity modulation module, a pulse width modulation module, a pulse density modulation module, and a driving module. The pulse intensity modulation module receives an image processing signal related to a pixel and generates a pulse intensity according to the image processing signal. The pulse width modulation module receives the image processing signal and generates a pulse width according to the image processing signal. The pulse density modulation module receives the image processing signal and generates a pulse density according to the image processing signal. The driving module receives the pulse intensity, the pulse width, and the pulse density and generates a driving signal to the pixel according to the pulse intensity, the pulse width, and the pulse density.

The invention provides a non-Gaussian ultrashort pulse-oriented multi-channel feature inversion method and device, and the method comprises the steps: obtaining a first FROG trace graph, carrying out the multi-channel feature extraction of the first FROG trace graph, and generating a three-channel input feature graph; inputting the three-channel input feature map into an intensity prediction network, outputting a predicted pulse intensity envelope, inputting the first FROG trace map into a phase prediction network, outputting predicted pulse phase distribution, and filtering the predicted pulse intensity envelope and pulse phase distribution to smooth noise; and reconstructing a complex electric field based on the filtered intensity and phase, regenerating to obtain a second FROG trace graph, and calculating an error index between the first FROG trace graph and the second FROG trace graph, the error index comprising an FROG error and an intensity correlation coefficient. According to the invention, the requirement of an advanced ultrafast laser system for high-precision online diagnosis of non-ideal pulses is met, and key technical support is provided for online diagnosis and closed-loop control of the advanced ultrafast laser system.

The application discloses a continuous variable quantum key distribution method based on an inner modulation pulse light source, which comprises the following steps: a sending end provides signal light and local light to a receiving end, or the sending end provides signal light to the receiving end, and the receiving end provides local light; the receiving end interferes the signal light and the local light, and extracts a component with channel noise and initial data from the interference result; and the receiving end processes the component with channel noise and the initial data to obtain amplitude modulation information related to the channel noise, namely, an initial key. The application makes full use of the random phase difference between the front and rear pulses generated by the inner modulation pulse light source, and makes the detection result independent of the phase difference, without any phase feedback and compensation, and the modulation mode is simpler; higher light pulse extinction ratio and light pulse intensity can be obtained, so that the transmission distance is farther, and the detection efficiency is higher; the high complexity double light source frequency locking technology can be avoided, and the system complexity is reduced.

This invention provides a method, system, and storage medium for rapid oscillation start-up of an overtone crystal. The method involves acquiring an oscillation signal as excitation parameter information and comparing it with a preset first threshold group. If any parameter fails to meet the requirements, a pre-adjustment of the oscillation signal is performed until all parameters meet the requirements, triggering a first conversion command. In response to this command, based on the comparison result of the slope deviation of the rising slope within adjacent detection cycles with a second threshold, the pulse intensity is increased or the pulse interval is shortened to strengthen the excitation when the deviation exceeds the standard. When the deviation meets the standard, a second conversion command is output and phase noise is extracted. The phase noise is compared with a third threshold. If the phase noise does not meet the standard, the excitation voltage is slightly increased to suppress the noise. When the phase noise meets the standard, the excitation voltage is gradually decreased until the phase noise recovers, at which point an oscillation start-up completion command is output. This achieves rapid oscillation start-up of the overtone crystal while ensuring the frequency stability and steady-state power consumption of the oscillation signal.

The invention discloses a partial discharge light pulse intensity measurement system and method, and the system is characterized in that a light detection module is used for capturing a light signal generated in a partial discharge process, and converting the light signal into an electric signal; the optical signal synchronization module is used for receiving and recording the electric pulse signals transmitted by the two optical detectors and judging whether the two electric pulse signals belong to the same discharge event or not; the data processing module is used for substituting the data characteristics, recorded in the optical signal synchronization module, of the two electric pulse signals in the same discharge event into a photon number calculation model to calculate the number of photons; according to the invention, the accuracy of light intensity measurement is high, the influence of overexposure is avoided, and the resolution of the optical detector is not limited.

The invention belongs to the technical field of rotating speed measurement, aims to solve the problems that a tachometer in a traditional electromagnetic pulse principle form is easily interfered by strong electromagnetic interference and metal burrs, and a pulse intensity threshold value is interfered by empirical human factors, and discloses a tachometer based on optics and a measurement method thereof. The tachometer comprises a laser transmitter, an optical signal receiving device and a photoelectric signal conversion assembly, the optical signal receiving device and the photoelectric signal conversion assembly are connected through an optical fiber, the laser transmitter is arranged below the optical signal receiving device, and the laser transmitter is arranged towards a gear and continuously emits laser to the surface of the gear; according to the method, the tachometer is used for rotating speed measurement. The number of the concave and convex parts of the gear is judged through the optical signal assembly, the optical signal receiving device adopts black to shield stray light interference in other directions, off-field interference can be effectively restrained, and the uniqueness of an optical path can also solve interference hindered by irregular objects in an optical field.

The invention relates to the technical field of high-frequency pressure pulse test devices, in particular to a knocking-based adjustable high-frequency pressure pulse output device and a control method. The detonation device is characterized by comprising a fuel gas mixing device, a detonation pipe and a detonation pipe collecting device, the fuel gas mixing device is arranged at the front end of the detonation pipe, the detonation pipe collecting device is arranged at the rear end of the detonation pipe, and a pressure relief device is further arranged at an outlet of the detonation pipe collecting device. The fuel gas mixing device is connected with the gas filling control system and the time sequence control module, and an electric spark generator is arranged on the fuel gas mixing device; a fuel gas mixing device is adopted for filling gas into a plurality of detonation pipes at the same time, each detonation pipe is provided with an independent ignition source, and the ignition time sequence is controlled by a time sequence control module in a unified mode. A detonation gathering device is adopted, and the structure can achieve pressure pulse output through a single tube. A delay control module and an electromagnetic valve group are adopted to control the gas filling time, and the pulse intensity is adjustable under the assistance of a pressure relief device.

This invention discloses a muscle stimulation modulation system and method based on real-time dynamic optimization, comprising: a real-time signal acquisition module for continuously acquiring multimodal physiological signals of the target limb, including at least electromyography (EMG) signals, joint kinematic angle signals, and neural electrical signals; a state assessment and prediction module for calculating real-time human state indicators based on the multimodal physiological signals, fusing historical state data, and generating future state trend prediction information through a time series prediction model; and a dynamic parameter optimization module for solving the optimal combination of stimulation parameters for the neuromuscular stimulator in real-time using an embedded optimization algorithm, based on the real-time human state indicators and state trend prediction information, with minimizing the objective function as the core. The stimulation parameter combination includes stimulation pulse intensity, frequency sequence, and waveform duty cycle. This invention enables better muscle stimulation modulation.

The invention relates to quantum key distribution, in particular to a space-based quantum key distribution system and a QKD transmitter, the space-based quantum key distribution system takes an FPGA as a control core and comprises an electronic module and an optical module, and the electronic module is responsible for converting key information provided by a QKD processor into a modulation signal and realizing dynamic coding of a quantum state; the optical module encodes a quantum state under the action of the modulation signal, regulates and controls the quantum pulse intensity to a single photon level, and finally outputs the quantum pulse intensity to a laser communication terminal of a satellite platform to be transmitted to an optical ground station; the optical ground station comprises an uplink system and a downlink system, the uplink system provides a stable and reliable beacon for the satellite platform, and the downlink system dynamically detects and compensates wavefront distortion based on a high-frequency closed-loop wavefront correction mechanism, counteracts the influence of atmospheric disturbance on light beam quality in real time and performs single-mode optical fiber coupling; according to the technical scheme provided by the invention, the defect that space-based quantum key distribution is difficult to accurately and efficiently carry out can be effectively overcome.

The invention discloses a refraction type pulse radiation detector based on multi-wavelength compensation and a dynamic range expansion method thereof, and solves the problems that when ray pulse intensity input by an existing refraction type pulse radiation detector is high, a large phase difference is generated between signal light and reference light, an output signal of an interferometer is reduced when reaching a certain value, and the dynamic range of the refraction type pulse radiation detector is influenced. The problem that the measurement dynamic range of the refraction type pulse radiation detector is limited due to the fact that the external output is not increased continuously is solved. The number of paths of probe light is reasonably designed, a plurality of interferometers with complementary linear intervals can be obtained, the dynamic range limitation of a single-path interferometer is broken through, the dynamic range of the refraction type pulse radiation detector is effectively expanded, meanwhile, the advantages of the single-path refraction interferometer are reserved, namely, the picosecond-order intrinsic time resolution is achieved, and the detection precision is improved. Meanwhile, pulse signals can be transmitted remotely, the front end is full-optical, and the anti-electromagnetic interference capability is high.

The application discloses a one-stop extraction column parameter calculation and visualization method, relates to the technical field of extraction columns, and comprises the following steps: acquiring extraction column working condition parameters, calculating core parameters through an embedded hydraulic model; presetting a pulse intensity range and generating discrete simulation points, fitting two trend curves; positioning a current working condition point and superimposing and drawing curves and the working condition point on the same interface, and synchronously marking an efficient area and a flooding critical line; the efficient area is an optimal interval with a liquid drop average diameter of 0.1-0.5 mm and a residence rate of 0.2-0.4, and the flooding critical line is a pulse intensity safety boundary; the working condition and the trend are synchronously visualized, engineers can quickly judge the pros and cons of the working condition and the safety state, an intuitive basis is provided for experiment debugging and engineering design, and the efficiency is improved.

The invention provides an optical fiber laser pulse string generation and amplification integrated module. The module sequentially comprises a pulse seed unit, a pulse frequency-selecting shaping unit and a pulse string amplification unit from an input end to an output end along a signal transmission light path, wherein the pulse seed unit is used for generating a MHz-magnitude high-repetition-frequency original pulse and pre-amplifying the MHz-magnitude high-repetition-frequency original pulse to obtain a first pulse string; the pulse frequency selection shaping unit is used for performing pulse frequency pickup and stepped intensity modulation processing on the first pulse string to obtain a second pulse string; the pulse string amplification unit is used for performing main amplification processing on the second pulse string so as to output a third pulse string with consistent sub-pulse intensity; the stable pulse source is provided through the pulse seed unit, meanwhile, by means of step-shaped modulation of the frequency selection shaping unit, reverse compensation of'front-strong and rear-weak 'of sub-pulses and flexible regulation and control of pulse parameters during main amplification are achieved at a stroke, then efficient power increasing of the pulse string amplification unit is guaranteed, and finally stable output of the uniform-strength high-repetition-frequency pulse string is achieved.

This invention provides a non-invasive stimulation device based on acoustic field modulation using a concave fiber bundle. The device comprises a pulsed laser module, a laser modulation control module, a multi-channel concave fiber bundle, and a photoacoustic transducer coating. The pulsed laser, after processing by the modulation module, is input into the fiber bundle. Its output end is concave, and the photoacoustic transducer coating on the surface converts the laser into ultrasonic waves. The concave structure achieves initial geometric focusing of the ultrasonic waves, forming the geometric focus of the acoustic field. The modulation module has control channels corresponding one-to-one with the fiber transmission channels, allowing for dual-dimensional control of the emission time delay and pulse intensity of each channel's pulsed laser. This enables hardware-free axial and lateral scanning of the focus; intensity control maximizes the focus sound pressure and minimizes the sidelobe sound pressure. This invention significantly improves sound pressure gain and spatial resolution through the combination of concave fiber bundle geometric focusing and a high-efficiency photoacoustic transducer coating.

The invention relates to the technical field of lasers, and discloses a laser pulse intensity monitoring circuit and method.The circuit comprises an optical signal monitoring circuit, a signal generation circuit, a sampling hold circuit and a control module, the optical signal monitoring circuit generates a to-be-monitored voltage signal based on a to-be-monitored pulse emitted by a pulse laser, and the signal generation circuit generates a to-be-monitored voltage signal based on the to-be-monitored voltage signal; the signal generation circuit generates multiple paths of holding signals according to light emitting signals controlling the pulse laser to generate pulses, the trigger edges of the multiple paths of holding signals sequentially lagging behind the light emitting signals, and the sampling holding circuit is connected with the light signal monitoring circuit and the signal generation circuit. The sampling and holding circuit is used for outputting multiple paths of to-be-sampled voltage signals corresponding to the holding signals according to the to-be-monitored voltage signals and the multiple paths of holding signals, and the control module is connected with the sampling and holding circuit and is used for sequentially sampling the to-be-sampled voltage signals corresponding to the holding signals after the trigger edge of the preset holding signals is monitored; according to the invention, the problem that short pulse signals cannot be sampled due to slow response speed and low sampling rate of the control module can be solved.

A substrate alignment measurement system comprising: an illumination source configured to provide a pulsed radiation beam comprising alternating s and p polarized radiation pulses; a first optical module configured to direct the pulsed radiation beam towards an alignment mark on a substrate; a second optical module configured to receive diffracted radiation from the alignment mark, the second optical module comprising a delay loop configured to provide temporally separated s and p polarized sub-pulses from each received pulse of the diffracted radiation; and a detection system configured to receive the s and p polarized sub-pulses from the second optical module and provide an output indicative of the intensity of each sub-pulse.

Systems and methods are provided that facilitate laser-based spatially-resolved ablation and ionization of a material, with low sample volume and little or no fragmentation. Sub-nanosecond pulses are directed onto a sample with a delay of less than 1 ns. Within an initial 50 fs after the onset of sample irradiation, one of the pulses generates an initial free electron density, and after the initial 50 fs, the other pulse increases the free electron density such that ablation occurs, resulting in an ablation volume having a sub-diffraction-limited lateral area that is smaller than a diffraction-limited 1 / e2 spot size of at least one of the first laser pulse and the second laser pulse, and a depth of less than 1 micron. The pulse intensities are provided such that ablation occurs without substantial analyte fragmentation, facilitating, for example, analysis and identification via mass spectrometry.

The application relates to the technical field of health monitoring of electric energy supply systems, and discloses a product appearance defect detection method based on machine vision, which comprises the following steps: acquiring original image data from a controlled loop entity, and calculating a local structure tensor matrix of a sampling point; determining a dominant texture direction through an eigenvalue decomposition operation, extracting a tensor trace sequence along the direction, and calculating a spatial axis change rate to identify a non-stationary pulse; adjusting a projection operator gain weight according to the pulse intensity, completing an orthogonal projection transformation under the constraint of the texture direction, generating a deviation response graph, and outputting an alarm signal; through tensor energy flow evolution analysis, the application realizes physical separation of background texture and homodirectional deviation signals, solves the feature coupling masking dilemma in appearance detection of a current-carrying loop entity, and enhances the physical damage detection sensitivity of the electric energy supply loop entity.

The invention relates to the field of pulse condition signal recognition. The invention relates to a firm pulse wave identification processing method, which comprises the following steps of: continuously acquiring pulse waves by utilizing a pulse diagnosis device to obtain original pulse condition data at rated time, and the data is pulse intensity change data under different pulse taking forces of floating, middle and sinking; the original pulse condition data at the rated time are periodically extracted, the original pulse condition data at the rated time are divided into n continuous original pulse condition data according to the periodic characteristics of the pulse waves, and n is an integer larger than or equal to 2; performing filtering processing on each continuous original pulse condition data by using a Butterworth band-pass filter, eliminating high-frequency noise interference, and obtaining n pieces of denoised pulse condition data; and performing data identification on each piece of de-noised pulse condition data to obtain effective features of the firm pulse, and performing feature matching to obtain the pulse duration of the firm pulse wave.

The embodiment of the invention relates to a platelet counting method and a blood cell analyzer. The method comprises the following steps: adding a diluent and a fluorescent dye into a to-be-tested blood sample to obtain the to-be-tested blood sample; light measurement is conducted on the to-be-measured sample to obtain forward scattering light signals of all particles in the to-be-measured sample, and each forward scattering light signal comprises forward scattering light pulse intensity and forward scattering light pulse width; and obtaining a platelet count value of the to-be-tested blood sample at least based on the forward scattering light pulse intensity and the forward scattering light pulse width in the forward scattering light signal of each particle in the to-be-tested sample. Therefore, accurate platelet counting can be obtained through one-time platelet optical detection.

The invention relates to the technical field of online state monitoring and fault diagnosis of metal plastic processing equipment, and discloses a deformation detection method for a top forging of a high-strength pipe penetrating machine under a dynamic load. A multi-channel acceleration sensor is arranged in the circumferential direction of a shell of the top forge piece to collect vibration data, and the data are averaged according to a dimensionless time sequence number and standardized to construct a non-stationary index; establishing a transformation view angle according to angle division based on fractional Fourier transform, calculating an energy concentration ratio of each angle, and selecting an optimal angle to obtain an amplitude spectrum and a pulse intensity index; reference intensity and threshold values are generated by utilizing multiple groups of normal working condition historical data and are compared with current indexes, and standardized signals are divided into continuous time subintervals for local analysis and continuous judgment, so that the tiny transient and stable structural deformation of the top forging can be sensitively and reliably identified; the defects that traditional single-point measurement and a fixed threshold are difficult to reflect the state and adapt to multiple working conditions are overcome.

The present application relates to the technical field of on-line condition monitoring and fault diagnosis of metal plastic processing equipment, and discloses a deformation detection method of a high-strength pipe penetrating machine top head forging under dynamic load. A plurality of channel acceleration sensors are arranged circumferentially on the top head forging shell to collect vibration data, and a non-dimensional time sequence is used to average and standardize the data to construct a non-stationary index. Based on the fractional Fourier transform, a transform perspective is established according to the angle, the energy concentration degree of each angle is calculated, and the optimal angle is selected to obtain the amplitude spectrum and pulse intensity index. A plurality of groups of normal working condition historical data are used to generate a reference intensity and a threshold value, which are compared with the current index, and the standardized signal is divided into continuous time subintervals for local analysis and continuous determination, so that the top head forging micro-transient and stable structural deformation can be sensitively and reliably identified, and the shortcomings that the traditional single-point measurement and fixed threshold value are difficult to reflect the state and adapt to multiple working conditions are overcome.

The application discloses a kind of X-ray pulsar period estimation methods based on fast folding algorithm, belong to pulsar navigation technical field, including: the PTOA sequence received by detector is divided according to time interval isochronous, and is converted into pulse intensity sequence, pulse intensity sequence is divided into group, each group contains sub-pulse intensity sequence;The half area division of each sub-pulse intensity sequence in each group is carried out, and the half area data in FFA is operated by the cyclic shift of butterfly-shaped summation algorithm, until the iteration of all layers is completed;The phase difference between the two parts of folding profile of interlayer output layer in butterfly-shaped summation process is utilized, combined with the quantization relationship of initial observation time difference and phase difference, the one-time fast estimation of optimal period is realized by period calculation formula.The application provides more efficient, more accurate time delay estimation information for X-ray pulsar navigation, and can improve X-ray pulsar navigation performance.

This invention relates to the field of laser technology and discloses a laser pulse intensity monitoring circuit and method. The circuit includes an optical signal monitoring circuit, a signal generation circuit, a sample-and-hold circuit, and a control module. The optical signal monitoring circuit generates a voltage signal to be monitored based on the pulse emitted by the pulsed laser. The signal generation circuit generates multiple hold signals whose trigger edges are sequentially delayed by the emitted light signal according to the control pulsed laser pulse generation signal. The sample-and-hold circuit is connected to both the optical signal monitoring circuit and the signal generation circuit, and is used to output multiple sampled voltage signals corresponding to the hold signals according to the voltage signal to be monitored and the multiple hold signals. The control module is connected to the sample-and-hold circuit and is used to sequentially sample the sampled voltage signals corresponding to each hold signal after detecting the trigger edge of a preset hold signal. This invention can solve the problem that short pulse signals cannot be sampled due to the slow response speed of the control module and the low sampling rate.

The invention relates to an inventory difference checking method and system based on an inventory dynamic propagation network, and belongs to the field of inventory management. The method comprises the following steps: acquiring a pulse conduction coefficient, and constructing an inventory dynamic propagation network based on the pulse conduction coefficient; acquiring an operation pulse, and injecting the operation pulse into the inventory dynamic propagation network; performing pulse propagation simulation based on the inventory dynamic propagation network, and outputting coherent pulse intensity and dissipated energy of each node; establishing an early warning mechanism based on the dissipated energy hot spots based on the dissipated energy; and after an early warning mechanism is triggered, tracing of a dissipation source is carried out. According to the invention, by constructing the inventory dynamic propagation network and introducing the pulse conduction and energy dissipation model, the interference effect between operations can be effectively captured, the conversion from passive response to active prediction is realized, and the accuracy and robustness of inventory management are significantly improved.

A retina-shaped photodetector capable of dynamic target detection belongs to the field of photodetectors. The photodetector comprises, from top to bottom, an upper electrode (1), an insulating layer (2), a light absorption layer (3), and a lower electrode (4). The upper electrode is made of titanium and gold, the insulating layer is made of silicon dioxide, the light absorption layer is made of intrinsic silicon, and the lower electrode is made of copper. The upper electrode (1) is arranged in multiple independent closed loops, and the number of closed loops corresponds to the number of pixels of the image sensor. The more the number is, the clearer the image detection result can be achieved. Lead wires are drawn on one side of each closed loop. Each closed loop structure comprises a 10 nm thick titanium lower layer and a 70 nm thick gold upper layer. The photodetector does not output a signal for an unchanged light intensity signal, but outputs a pulse electrical signal when the light intensity changes. The pulse intensity is directly proportional to the ratio of the light intensity before and after the change.

The invention discloses a three-mode fusion rainfall tendency identification method and system based on a humidity adaptive optical storage device, a terminal and a medium, and the method comprises the steps: collecting an illumination signal, a humidity signal and a wind speed signal, converting the illumination signal into ultraviolet light pulse intensity, converting the wind speed signal into ultraviolet light pulse frequency and pulse width, and carrying out the recognition of the rainfall tendency according to the ultraviolet light pulse frequency and pulse width; a wind speed signal is combined and converted into a standardized ultraviolet light pulse sequence; projecting the standardized ultraviolet light pulse sequence to a reservoir array, obtaining a current response curve output by the reservoir array, and obtaining a high-dimensional feature vector; converting the high-dimensional feature vector into a digital feature vector based on the FPGA; and inputting the digital feature vector into a readout layer of the FPGA to carry out rainfall and no-rainfall binary classification identification, and outputting a rainfall tendency identification result. According to the invention, the architecture and performance bottlenecks of a traditional rainfall prediction system are broken through, and real-time acquisition of optical, humidity and wind speed three-mode signals, adaptive feature fusion and rainfall tendency accurate identification are realized.