45results about How to "Increase randomness" patented technology

The invention discloses an interference communication integrated waveform generation method based on spectrum dispersion-multi-system phase shift keying. The problems of difficult communication information demodulation and high hardware implementation complexity in interference communication integration research are mainly solved. According to the scheme of the invention, the SMSP interference signal is formed by periodically expanding the chirp signal on the time domain, the communication information is modulated on the phase of the chirp signal, and the plurality of chirp signals carrying the communication information can cause dense false target interference at random positions on the radar, so that the interference and communication integrated signal is generated. At a communication receiving end, a first linear frequency modulation signal is adopted to perform carrier synchronization, so that the synchronization effect can be improved by using the high time width-bandwidth product characteristic of the linear frequency modulation signal, and communication information can be demodulated directly by using a coherent demodulation mode; at a radar receiving end, the signal can generate a radar interference effect with dense false target characteristics.

The invention relates to the technical field of coin pushing machines, and discloses a novel pushing disc for a coin pushing machine, which comprises a coin pushing assembly, the coin pushing assembly comprises a fixing frame, wherein the rear surface of the fixing frame is slidably connected with a pushing disc; the baffle is fixedly connected to the side face of the push disc; a sliding assembly is arranged on the front surface of the fixing frame. The sliding assembly comprises a motor which is fixedly connected to the front surface of the fixing frame; the motor gear is meshed with the rack to drive the push disc to reciprocate by a fixed distance. When the coin pushing machine has a big award, the pushing disc moves through the first photoelectric sensor to the third photoelectric sensor, the first photoelectric sensor and the third photoelectric sensor send signals to the coin pushing machine control system, the rack drives the pushing disc to reciprocate by the maximum distance, the pushing disc is reset after reciprocating sliding once, and the motor is driven by the positive and negative rotation driving circuit for control. Working is conducted by combining gear and rack meshing transmission, movement of different distances can be generated, and the interestingness and randomness of games are improved.

The invention discloses a secure transmission method and device, equipment, a medium and a product, and the method comprises the steps: obtaining an access request of a client and a current randomized tag pre-distributed to a web application in a server, and triggering the updating of the current randomized tag through a network attack association feature; scheduling a pre-trained target detection model based on the access request, and determining a security detection result of the access request; if the security detection result is secure, sending the access request to a server, and receiving a response result fed back by the server; and performing behavior analysis on the response result according to the current randomized tag, determining security feedback content and feeding back the security feedback content to the client. By dynamically updating the current randomized tag, the randomness of the defense form is enhanced, the method does not depend on the attack mode of an attacker, novel attacks or attack variants can be dealt with in real time, double attack detection of security detection and behavior analysis is carried out on the access request, and the detection capability and defense capability of the attacks are improved.

The application discloses a kind of beam bridge girder static load deflection prediction methods based on improved AVOA-GRNN network, comprising:1, establish vehicle bridge finite element model and add vehicle bridge uncertainty simulation bridge dynamic static load test, collect dynamic static load test data;2, the above data is selected using the characteristic of pearson linear correlation coefficient;3, using dynamic static load experimental data training GRNN neural network model, and construct the parameter of improved African vulture algorithm optimization GRNN, obtain the corresponding smooth factor when average absolute error is minimum;4, the dynamic load test data of prediction set is substituted into improved AVOA-GRNN network model and carries out static load deflection prediction.The application can use beam bridge girder dynamic load test data to predict corresponding static load deflection, so as to effectively solve the problems, such as high cost of predicting beam bridge static load test, great influence on traffic and easily causing damage to bridge structure.

The present application relates to the technical field of food raw material sampling detection, and in particular to a food raw material primary processing sampling detection device, which comprises a conveying bottom plate, the top of the conveying bottom plate is fixed with a horizontal sliding rail, the horizontal sliding rail is connected with a moving plate through an electric sliding block, the top of the moving plate is connected with a containing box for containing raw materials through a T-shaped plate, the T-shaped plate is set upside down, the horizontal section of the T-shaped plate is symmetrically provided with sampling parts in front and back, and the top of the moving plate is commonly provided with reciprocating pushing parts on the left and right sides. The sampling pipe is used to sample from the bottom to the top through the sampling hole preset at the bottom of the containing box, compared with the direct sampling mode of the container from the top of the containing box, the damage to the peas can be reduced, so that the appearance of the processed peas is ensured, and through the pushing arc surface arranged on the side of the sealing plate, the damage to the peas caused by the sealing plate in the process of sealing the through hole can be avoided, and the appearance of the processed peas is further ensured.

The application discloses a rumor detection framework based on adaptive data enhancement and adversarial training, and aims to overcome the problems that the prior art only considers structure and ignores features when facing data noise problems, and does not consider the influence of adversarial attacks on rumor detection problems. The steps of the method are as follows: 1. processing the data set; 2. using an adaptive data enhancement method to weaken the influence of noise; 3. using a graph convolutional neural network to generate a graph representation; 4. using an adversarial generation module to generate an adversarial representation to improve the robustness of the model; and 5. constructing a joint loss function to optimize the rumor detection task.

The application discloses a kind of resident load data generation methods based on dynamic harmonic admittance parameter, state division and standardization pretreatment are carried out to original load current data according to sampling rule, then carry out fast Fourier transform calculation, obtain harmonic current vector data and define voltage vector data;According to harmonic current, voltage vector data, obtain admittance vector, utilize admittance transfer method to constrain admittance vector to one, four quadrant, obtain each period discrete harmonic admittance parameter, then obtain dynamic harmonic admittance parameter after polynomial fitting and introducing the random variable of simulation error;According to dynamic harmonic admittance parameter and load state switching time information, build complete load simulation model by power supply simulation model, load admittance equivalent simulation model under single operating state and load state switcher combination on Simulink platform, finally simulate and generate load current simulation waveform data.The application improves the randomness and richness of the generated data.

The application discloses a file fragment classification model training method and a file fragment classification method, relates to the file fragment classification field, and comprises the following steps: collecting original file data of different types, and randomly sampling data blocks of the original file data of different types in a fixed byte length; converting each data block into a corresponding initial token sequence; converting each initial token sequence into a target token sequence; pre-training a Transformer model based on each target token sequence after dynamic masking, wherein the dynamic masking comprises the following steps: randomly selecting a preset proportion of byte tokens in the target token sequence as target byte tokens, and performing different masking operations on each target byte token based on a probability distribution, wherein the different masking operations comprise replacing the target byte token with a fourth function token, randomly replacing the target byte token with another byte token, and keeping the target byte token unchanged, and the application can improve the generalization capability of the Transformer model.

The application provides a kind of motion optimization method and system of mechanical arm based on improved sparrow algorithm, based on the kinematic model of mechanical arm, the trajectory of mechanical arm is planned using polynomial interpolation method, and the joint motion trajectory is obtained;Based on the joint trajectory, the objective function and the constraint condition of the mechanical arm are constructed;The sine-cosine mapping, improved elite reverse learning strategy and Cauchy Gaussian variation principle are integrated into the sparrow algorithm to obtain the improved sparrow algorithm;Based on the objective function and the constraint condition, the improved sparrow algorithm is applied to the trajectory planning of the mechanical arm, and the motion of the mechanical arm is optimized.The application integrates the sine-cosine mapping, improved elite reverse learning strategy and Cauchy Gaussian variation strategy into the sparrow algorithm to form the improved sparrow algorithm, improves the diversity of population, avoids falling into local optimum, and can effectively find the global optimal solution.The improved sparrow algorithm is applied to the mechanical arm, which improves the running efficiency and running accuracy of the mechanical arm.

The invention belongs to the technical field of organic synthesis, and discloses a preparation method of alkane diol random polyether. The preparation method comprises the following steps: adding an initiator alkane diol, a main catalyst and a cocatalyst into a reaction kettle, adding ethylene oxide and epoxypropane, controlling the feeding time to be 4-8 hours, controlling the feeding rate of the ethylene oxide to be linearly increased to 40-65 g / 10 min from 10-30 g / 10 min, and controlling the feeding rate of the epoxypropane to be linearly reduced to 10-30 g / 10 min from 40-65 g / 10 min. According to the preparation method provided by the invention, ethylene oxide and propylene oxide are taken as comonomers, and the random copolyether with uniformly distributed molecular chain sequences is prepared in a compound base catalysis system through a special feeding mode. The random copolyether is high in random degree, low in surface tension, high in emulsion stability and narrow in molecular weight distribution; and the preparation method can follow the post-treatment method of the traditional alkali catalysis process, and has the advantages of simple process and low cost.

The utility model discloses an electronic candle, include: casing is equipped with liquid medium cavity, and liquid medium cavity is filled with liquid medium in, flexible flame simulation spare, install in liquid medium cavity, drive component, install in casing, and drive part is connected with flame simulation spare directly or indirectly. Since the flexible flame simulation spare is installed in the liquid medium cavity, the flexible flame simulation spare will be flexible and twisted in the liquid medium cavity after the drive component drives the flame simulation spare to move, and the flexible and twisted flame simulation spare in the liquid medium has higher randomness, which can effectively improve the simulation of the movement of the flame simulation spare. The liquid medium will also move after being shaken and swung by the flame simulation spare, and the dynamic liquid medium can produce a light spot, further improving the simulation of the flame simulation spare. Combined with the principles of fluid mechanics and optics, the utility model simulates the jumping form and light and shadow effect of the real flame, and brings the user an immersive visual enjoyment.

This utility model provides a ball bearing plate device for an amusement machine, including a bracket, a panel, a base plate, a turntable, a first motor, a first gear, a second gear, and a transparent cover. The panel is fixedly mounted on the bracket; the base plate is fixedly mounted on the bracket; a ring-shaped turntable is provided around the base plate, and a second gear is fixedly connected to the outer periphery of the turntable; a first motor is mounted on the bracket, and the first gear is connected to the first motor, meshing with the second gear; the top of the base plate has an inlet groove for the ball bearings to enter; several protruding obstacle pins are fixedly provided in the middle of the base plate; several horizontally arranged outlet grooves for scoring are provided at the bottom of the base plate; a scoring recognition switch for scoring is provided inside the outlet grooves; and a limiting plate for limiting the ball bearings is provided at the edge of the base plate; the turntable has evenly distributed inward-facing gripping grooves; and the transparent cover is fixedly mounted on the panel, covering the front of the base plate. This utility model can conveniently circulate and transport the ball bearings to the top.

The utility model discloses high-yield chip burning equipment, which comprises a burning mechanism with a burning substrate, a three-axis driving component, a burning unit and a pickup unit, the three-axis driving component and the burning unit are respectively mounted on the upper surface of the burning substrate, and the pickup unit is mounted on the three-axis driving component and used for carrying chips into the burning unit. A substrate is arranged on the outer side of the burning substrate, a testing unit and a three-axis driving unit are installed on the substrate, at least two vacuum suction nozzles arranged at intervals are installed on a Z-axis movable block of the three-axis driving unit, and a horizontal carrying module is further installed on the upper surface of the substrate. One end of the horizontal carrying module is connected with the upper surface of the substrate, the other end of the horizontal carrying module extends to the position above the burning substrate and is connected with the burning substrate, and a material conveying carrying table is installed on a movable part of the horizontal carrying module. According to the high-yield chip burning equipment, the production efficiency can be improved, the yield in the whole burning process can be ensured, and the effectiveness of sampling inspection can be improved.

This invention relates to the field of video generation technology, specifically disclosing a method and system for self-generating sales text videos. The method includes receiving sales text uploaded by a user; performing semantic analysis on the sales text to segment it into sentences and words in each sentence; creating a sales video based on the words; recognizing the sales video using AI to obtain recognized text; comparing the recognized text with the sales text to calculate text similarity; and reading audio from a preset audio library based on the text similarity and inserting it into the sales video. This invention performs semantic analysis on the sales text, segments it into words, creates a sales video based on the words, recognizes the sales video, compares the recognition results with the sales text, and adjusts the audio insertion part according to the comparison results, thereby optimizing the originality and randomness of the sales video.

The utility model discloses a ball disc and game machine for game equipment technical field. The ball disc is provided with a ball inlet groove and a ball falling groove. The ball inlet groove extends along its length direction. One end of the ball inlet groove penetrates the disc wall of the ball disc to form a ball inlet on the disc wall of the ball disc for the ball to enter. The other end of the ball inlet groove penetrates the groove wall of the ball falling groove. The inner bottom surface height of the ball inlet groove is greater than or equal to the inner bottom surface height of the ball falling groove. The ball falling groove is provided with a ball falling through hole for the ball to fall. The inner circumferential surface of the ball falling groove is an annular inclined surface around the ball falling through hole. The width of the ball inlet groove matches the outer diameter of the ball. The width and length of the ball falling groove are greater than the width of the ball inlet groove. The length direction axis of the ball inlet groove is different from the axis of the ball falling through hole. The ball that leaves the ball inlet groove rolls in the circumferential direction in the ball falling groove. After the ball falls into the ball falling groove, it cannot directly fall into the ball falling through hole and needs to roll in the circumferential direction on the annular inclined surface of the ball falling groove. The ball stays on the ball disc for a long time.

The application provides a high-speed random number generator based on a conservative chaotic system and a generation method thereof. The generated random number is subjected to two commonly used random number test standards, namely, a test suite NIST SP800-22 of The National Institute of Standards and Technology and another test suite TestU01, and experimental test results can prove that the generated random bit sequence passes the randomness test. The throughput of the high-speed random number generator can reach 19 Gbps.

The application discloses an antenna cover random triangle partitioning method and device, first, an antenna cover surface model is established by using CATIA software, and the antenna cover surface model is saved as an IGS format surface model; then, the IGS format surface model is subjected to random triangle meshing to generate triangle mesh node coordinates by using ANSYS software; then, point cloud coordinate data is obtained by performing coordinate conversion on the triangle mesh node coordinates by using EXCEL; finally, the point cloud coordinate data is recorded by using CATIA software to complete random triangle partitioning of the antenna cover. The triangle partitioning formed by the method can couple boundary changes of the antenna cover surface, reduce the difficulty of manual operation of engineering and technical personnel, improve the randomness of the triangle partitioning, and effectively measure and ensure the quality of the triangle partitioning.

This invention provides a communication method, apparatus, electronic device, and storage medium. The method applied to a transmitting device includes: injecting artificial noise signals into one or more signals to be transmitted to obtain one or more encrypted sequences, and storing the injection positions of the artificial noise signals; randomly clustering a codebook composed of the one or more encrypted sequences to obtain multiple non-empty clusters, and randomly dividing each non-empty cluster into multiple sub-clusters; randomly encoding the sequence number of the non-empty cluster to which each encrypted sequence belongs to obtain a first sequence number corresponding to each encrypted sequence; sending the first sequence number and the encrypted sequence to a receiving device for authentication based on the first sequence number; and generating a private key corresponding to the encrypted sequence based on the injection positions of the artificial noise signals, so that the receiving device can decode the encrypted sequence using the private key after successful authentication. The key generation method employed in this invention improves key randomness and transmission security.

This disclosure provides a virtual object control method, comprising: displaying a game scene of a game match on a graphical user interface of a terminal device, the game scene including a first virtual object corresponding to the terminal device and a second virtual object belonging to a different faction from the first virtual character; determining a second buff effect in response to the first virtual object performing a first defeat operation on the second virtual object, wherein the second buff effect belongs to a second type of buff effect; applying the second buff effect to the first virtual object; updating the continuous defeat state of the first virtual object; determining a first buff effect corresponding to the updated continuous defeat state based on the updated continuous defeat state, wherein the first buff effect belongs to a first type of buff effect; and applying the first buff effect to the first virtual object. This allows players to obtain dynamic buff effects through defeat operations during game matches, achieving a "fight and grow" gaming experience.

This invention relates to the field of tea processing technology and discloses an automatic spreading fermentation device for tea processing, including a base. A fermentation box is fixedly connected to the top of the base. A fermentation frame is set inside the fermentation box, and several round holes are opened inside the fermentation frame. By driving a sliding sleeve to move laterally back and forth along the sliding rod through an electric push rod, a turning rod is driven to move a long distance within the fermentation frame, improving the uniformity of tea turning. During the translation process, the gears at both ends of the rotating rod mesh with the rack. When it moves to the rack sections at the left and right ends of the box, the gears drive the rotating rod and the turning rod to rotate automatically, changing the material-pushing angle of the turning rod from translational pushing to rotational turning and throwing. This forces the bottom layer of tea leaves to rise and the surface layer of tea leaves to sink, achieving deep three-dimensional replacement, significantly improving the uniformity of fermentation, and completely solving the problems of dead material accumulation at the end, local over-fermentation, or mold growth that exist in traditional scraper-type turning. This ensures that every piece of tea leaves participates in the cyclic turning process.

The invention discloses a microwave correlated imaging method and device based on frequency and phase joint modulation, and relates to the technical field of radars. The method comprises the following steps: acquiring radar parameters; performing grid division on the target imaging scene; constructing a random radiation field of frequency and phase joint modulation based on radar parameters, a grid division result and a frequency and phase modulation function; receiving an echo signal of the target by using the random radiation field, and obtaining a distance pulse pressure envelope based on the received echo signal; and on the basis of the sub-optimization problems of the random radiation field, the distance pulse pressure envelope and the noise variance, the sub-optimization problem of the target sparse characteristic parameter and the sub-optimization problem of the super-resolution image reconstruction, the super-resolution image of the target is determined by alternately estimating the noise variance, the target sparse characteristic parameter and the super-resolution image. The method can effectively solve the problems that a random radiation field is single in construction mode and insufficient in flexibility, the image super-resolution capability is remarkably reduced under the condition of a low signal-to-noise ratio, and the imaging quality is limited.

The invention relates to a true random number generation method based on polarization entangled photon pairs, and belongs to the technical field of quantum random number generation. The invention provides a high-safety and high-reliability quantum random number source based on polarization entangled photon pairs, aiming at the limitation of an existing quantum random number generator in the aspects of safety and reliability. According to the technical scheme, a semiconductor laser is used for generating linear polarization pump light; light passes through a dual-wavelength polarization beam splitter DPBS to bidirectionally pump a periodically poled titanyl potassium phosphate crystal PPKTP in a Sagnac loop, and degenerate polarization entangled photon pairs are generated; after entangled photon pairs are separated by a polarization beam splitter (PBS), coincidence judgment on the detectors B and C is triggered by using a signal of the detector A, and original quantum random number seeds are generated; finally, the sequence is post-processed using the von-Noiemann method. The quantum random number source provided by the invention has high safety and high reliability.

This invention discloses a method and system for encrypted storage of power data, applied in the field of power system information security technology. The method includes: acquiring power data to be encrypted from a target power system; determining a dynamic time-series characteristic sequence based on historical operating status data of the target power system; grouping the power data to be encrypted into individual data groups; determining a session key for each data group based on the analysis results of the historical operating status data; encrypting each corresponding data group using each session key to obtain ciphertext data; encrypting all session keys using the master key in an asymmetric encryption algorithm to obtain encrypted session keys; associating and encapsulating all ciphertext data and encrypted session keys, and storing the association and encapsulation result in a secure database. This invention achieves secure and stable encrypted storage of power data.

The invention discloses an unmanned aerial vehicle authentication and key negotiation system and method based on PUF and chaotic mapping, and relates to the field of information security and cryptographic protocol security. The system generates a unique challenge-response pair through an unmanned aerial vehicle terminal PUF module to complete registration, a four-way handshake mechanism is adopted in the authentication stage, a session key is dynamically generated in combination with Henon chaotic mapping, the number of chaotic iterations is hidden through XOR operation, and identity legality is guaranteed through multi-layer MAC verification. According to the method, secret keys do not need to be pre-stored, the PUF physical unclonability and the chaotic mapping sensitivity are utilized, anonymous authentication and forward security are achieved, lightweight computing adapts to unmanned aerial vehicle resource constraints, various attacks are effectively resisted, and communication security is guaranteed.

The invention discloses a low-frequency time code system and method based on a two-dimensional composite chaotic sequence, and relates to the technical field of wireless communication, and the low-frequency time code system based on the two-dimensional composite chaotic sequence mainly comprises a transmitting end and a receiving end. The transmitting end comprises a time coding module, a direct sequence spread spectrum module, an amplitude shift keying modulation module and a frequency hopping spread spectrum module; and the receiving end comprises a de-hopping module, an amplitude shift keying module, a de-spreading module, a filtering module, a judgment module and a decoding module. According to the low-frequency time code system and method based on the two-dimensional composite chaos sequence, the complexity, randomness and statistical property of the chaos spread spectrum sequence can be improved, and the anti-jamming capability, safety and environmental adaptability of the low-frequency time code system are improved.

The application discloses a dynamic target tire ejection toy, which comprises a launching assembly, a tire part, a rotary driving mechanism and a fire ring part. The launching assembly comprises a launching track and an ejection mechanism arranged at one end of the launching track. The tire part comprises a first tire shell and a second tire shell, which are detachably connected. The rotary driving mechanism has an output shaft. The fire ring part is connected to the output shaft, and the rotary driving mechanism can drive the fire ring part to rotate. The application provides a dynamic target for the launched toy body by arranging the rotatable fire ring part, breaks the limitation of no target or fixed target of the existing products, increases the challenge and randomness of playing, effectively exercises the reaction ability and timing control ability of children, and improves the interactive interest. Meanwhile, the detachable connection of the first tire shell and the second tire shell not only facilitates disassembly, storage and carrying and transportation, but also avoids scattered loss of parts, and optimizes the use experience and application scene of the toy.

The application provides an anti-fraud identification method and device based on an identified position, equipment and a storage medium. The method comprises the following steps: obtaining a first image after a concrete sample is placed in a two-dimensional code label; obtaining a second image after the two-dimensional code label is pressed according to a randomly determined pressing area; selecting a target feature point from a plurality of first texture feature points and constructing a target coordinate system; and determining a first offset angle of each positioning mark. When a third image sent by an inspection terminal is obtained, the target coordinate system is constructed based on the target feature point, the second offset angle of each positioning mark is determined, and an anti-fraud identification result is determined based on the corresponding plurality of first offset angles and second offset angles. According to the technical scheme of the embodiment of the application, the two-dimensional code label can be longitudinally offset by the randomly determined pressing area, the coordinate system is constructed based on the randomly selected target feature point to obtain the offset angle as the identification information, and the reliability of the anti-fraud identification is improved.

The present application relates to the technical field of data processing, and especially relates to a patient medical data security storage method and system. The method comprises the following steps: obtaining medical data to be encrypted, splitting the medical data into multiple data blocks and determining index information of each data block; in a plurality of rounds of encryption operations on any data block, each round of encryption dynamically determines a current round key, and a permutation index is calculated according to the index information of the data block and the current round key; based on the permutation index, a current encryption step sequence is determined from a preset encryption step mapping table; and the encryption operation on the data block is performed using the current round key according to the determined encryption step sequence. The present application dynamically adjusts the round key use sequence and the encryption step execution sequence, and associates the encryption transformation with the position of the data block itself, thereby increasing the complexity and cracking difficulty of the encryption process and improving the security of medical data storage.

The present disclosure provides a pseudo-random number generator and a pseudo-random number generation method. The pseudo-random number generator comprises: a signal mapping circuit configured to map a plurality of input signals using a chaotic model to obtain a plurality of chaotic signals having a four-wing chaotic state; a signal sampling circuit electrically connected to the signal mapping circuit and configured to sample the plurality of chaotic signals to obtain a plurality of state variables corresponding to each chaotic signal in the plurality of chaotic signals; and a signal operation circuit electrically connected to the signal sampling circuit and configured to perform an integer operation on the plurality of state variables corresponding to each chaotic signal to obtain a plurality of groups of random numbers corresponding to the plurality of chaotic signals respectively, each group of random numbers in the plurality of groups of random numbers comprising a plurality of random numbers.