57 results about "Random delay" patented technology

The invention relates to the technical field of power system control, solves the problems of network attack, limited bandwidth and transmission delay of a power system in a signal transmission process and conservative DET parameter selection and controller design, and particularly relates to a power system dynamic event triggered load frequency control method under Dos attack and random delay. Comprising obtaining a continuous time system parameter matrix; setting an event triggering threshold function; state parameters facing Dos attack and random time delay conditions are set; constructing a state feedback controller; and collaborative design optimization is carried out by applying a GA optimization algorithm. Compared with a traditional control method, the method has the advantages that on the premise of ensuring the stability of the system, by optimizing event triggering conditions, the communication requirement and bandwidth occupation are remarkably reduced, the utilization efficiency of communication resources is improved, network congestion and delay possibly caused by frequent communication are reduced, and the service life of the system is prolonged. And the operation efficiency of the whole power system is improved.

The invention relates to a master-slave communication technology, and discloses an automatic slave address allocation method of a master-slave communication system and the master-slave communication system, and the method comprises the following steps: when all slave addresses need to be reallocated, a host sends a first broadcast frame containing a first instruction identifier and a random seed; and after receiving and analyzing, each slave generates random delay and a slave address in combination with the unique identifier of the slave and the random seed, and sends a response frame containing the slave address and equipment information to the host according to the random delay. And the host receives the response frame, updates the slave equipment information table and establishes a special communication link for the slave. And when a new slave is accessed, the host sends a second broadcast frame containing a second instruction identifier, a random seed and an allocated address list. And the slave with the allocated address does not respond, the new slave generates an address sending response frame according to a rule, and the host establishes a link for the new slave. The invention further discloses a computer readable storage medium. The invention aims to improve the efficiency of allocating addresses to the slave by the master-slave communication system and facilitate the expansion and access of the new slave.

The invention provides an underwater multi-robot distributed elastic positioning method and system, and relates to the field of underwater robots. Establishing a kinematic model of the target robot and a measurement model of monitoring node fusion distance, depth and attitude information; when the state variation of the target robot exceeds a preset threshold value, communication is triggered; identifying a random delay state of a measurement signal by adopting a binary indicative function, dividing a scene according to a relationship between the current moment and the total time length of a task, and converting random delay information into a non-delay equivalent sequence; on the basis of the kinematic model, the measurement model and the non-delay equivalent sequence, delay channels are selected in different scenes to execute state prediction and elastic gain correction, and a state estimation value of the target robot is obtained; wherein the tight upper bound of the positioning error covariance matrix is constructed, and the optimal positioning gain is solved to iteratively optimize the elastic gain. By adapting time-varying delay and optimizing gain control errors, efficient cooperative positioning in a complex environment is ensured, and reliable pose information is provided for underwater tasks.

The invention relates to the technical field of data lines, and particularly discloses a data line system and a data line for intelligently switching data transmission and charging, and the system comprises a dual-core synchronization management module which is used for enabling dual cores to enter an initial detection state through encryption synchronization signaling when equipment is connected; the asynchronous signal processing module is used for generating state judgment parameters through multi-scale sliding window processing and time-frequency domain feature fusion; the consensus decision arbitration module outputs a backtracking trigger signal through dynamic projection transformation and self-adaptive threshold comparison; the state backtracking recovery module is used for generating a retry instruction with a random delay period based on the historical backtracking success rate and the signal quality evaluation; the safety mode control module is used for identifying dominant features by analyzing historical failure records and switching to a safety operation mode; through distributed dual-core cooperative processing and an intelligent fault recovery mechanism, the technical problems of confusion of protocol stacks and deadlock of a state machine in a complex electromagnetic environment are solved, and the anti-interference capability and reliability of the system are improved.

The invention discloses a federated learning time series data analysis method based on shuffling differential privacy, which comprises the following steps that: a central server initializes global model parameters and distributes an initial model to all federated learning clients; each client uses a local time sequence data training model, calculates a gradient, then cuts the gradient, and adds Laplacian noise; the client uploads the disturbed gradients to a shuffling device, and the shuffling device allocates random delay time to each gradient and disrupts an uploading sequence to realize privacy amplification; the central server aggregates the gradients processed by the shuffling device to generate a global gradient, and broadcasts the updated model parameters to the client; repeating the above steps to perform iterative training, and tracking privacy budget consumption in real time through a privacy accounting method until a preset privacy budget threshold value or model convergence is reached; according to the invention, privacy amplification is realized, and noise injection is reduced.

The application discloses a kind of based on time random number identification sequence's internet of things node adaptive access method, comprising the following steps: S1, node initialization resource;S2, node generates identification sequence X and is packaged with initial number and sends;S3, gateway verifies node message after extracting identification sequence X and searches idle number;S4, gateway generates identification sequence Y after random delay and is packaged with identification sequence X and number and sends;S5, node verifies identification sequence X in message and extracts identification sequence Y and number;S6, node will new number and identification sequence Y package and send;S7, gateway verifies number and identification sequence Y in node message and sends response package back;S8, gateway waits for node to resend to judge registration completion.The method does not need floating-point operation unit and other additional hardware and software cost requirements, deployment is simple, stability is good, can greatly reduce the operation cost of artificial operation and maintenance and avoid the waste or conflict situation of node number resource caused by misoperation.

The present invention relates to a collision-free connection method and system for large-scale low-power Bluetooth devices, and relates to the field of connection control of large-scale low-power Bluetooth devices. For all low-power Bluetooth slave devices, when the predetermined fixed broadcast time interval arrives, the random delay time generation algorithm calculates the target random delay time for itself by using the parameters generated by the offline dynamic parameter generation library; each low-power Bluetooth slave device starts broadcasting to attempt to establish a connection with the Bluetooth gateway after the target random delay time, and disconnects the connection after successfully interacting with data and enters the low-power mode; the low-power Bluetooth slave device repeats the next round of broadcasting and data transmission according to the preset time period. The randomization of the broadcast start time in this application greatly reduces the communication collision risk generated when multiple low-power Bluetooth slave devices attempt to connect to the Bluetooth gateway at the same time, ensuring that even in a high-density device network environment, an efficient connection process can be maintained.

This application discloses a verification method, system, device, and storage medium for a device under test (DUT), applied in the field of testing technology. The method includes: configuring N verification tasks for N operating modes of the DUT, with each verification task configured with a random delay; placing the N verification tasks into a first queue; selecting one verification task from the first queue; determining the cumulative number i of times the currently selected verification task has been selected from the first queue, and sending its i-th step to the DUT; after the DUT completes the execution of this step, after the random delay of the verification task, returning the verification task to the first queue, and repeating the operation of selecting one verification task from the first queue until all steps of each verification task have been executed by the DUT; and determining the verification result of the DUT. Applying the scheme of this application can effectively realize the verification of the DUT, improve the verification efficiency, and avoid errors.

The application is suitable for the technical field of rodent control, and provides a mouse driving method based on a dynamic composite sound field and an intelligent mouse driving device. The method comprises: when detecting rodent activity, outputting an ultrasonic electric signal and a simulated audio electric signal; performing random delay processing and random gain processing on the ultrasonic electric signal; performing random delay processing, random gain processing, three-dimensional sound field rendering processing and dynamic volume adjustment processing on the simulated audio electric signal; driving a plurality of surround-arranged ultrasonic transducers and synchronously driving a plurality of surround-arranged loudspeakers to generate a dynamic composite sound field. The application can form a dynamic composite sound field with physiological interference and psychological deterrence by performing random delay, gain processing, spatialization processing and dynamic processing operations on the ultrasonic signal and the simulated audio signal respectively, and cooperatively outputting by the surround-arranged sound generating units, avoid the mouse driving blind area, and is not easy to be adapted by rodents, thereby improving the instant effect and durability of mouse driving.

The invention discloses a multi-access point competition response method based on random time delay. The invention relates to the technical field of wireless communication, and solves the problems of wireless node retransmission, delay increase and even connection interruption caused by high conflict probability when a plurality of wireless access points receive signals at the same time. The method comprises the following steps: a wireless node terminal sends an access point competition inquiry instruction after being online, and all wireless access points in a channel receive the instruction; the wireless access point replies response information carrying the signal strength information to the wireless node terminal by adopting random time delay response; and the wireless node terminal selects the wireless access point with the highest received signal strength as the main access point. The communication reliability of the equipment can be improved, the problems of data loss, time delay and the like are avoided, and the transmission efficiency is improved. And for a low-power-consumption wireless node, the radio frequency retransmission power consumption of wireless node equipment can be further reduced, and the effective use time is prolonged.

The invention belongs to the technical field of charging piles, and particularly relates to a power-frequency small-current leakage protection low-frequency conducted interference resistance detection system and method. The system comprises a random phase-shift frequency-conversion oscillation module for converting low-frequency conducted interference of 10kHz-150kHz into an unstable equivalent low-frequency signal by introducing random delay to control the charging overturning time of a magnetic core; the dot frequency comb filtering module is used for filtering the current signals of a plurality of preset power frequency harmonic frequency points and outputting a maximum effective value; and the power frequency current judgment module is used for judging whether the effective value continuously exceeds a threshold value (such as 5mA) and reaches stable time (such as 50ms) so as to distinguish real electric leakage and interference. The method is realized based on the system. The core advantages of the invention lie in that misoperation caused by low-frequency conducted interference can be effectively avoided, the reliability of high-sensitivity (5mA) electric leakage protection in a complex electromagnetic environment (such as electric vehicle charging) is significantly improved, and the strict safety standard requirements such as UL2231 and the like are met.

An embodiment of the present invention provides a code generation method, apparatus, device, and readable storage medium. Based on a target syntax tree corresponding to the code to be verified, a target module node corresponding to a module to be verified in the code to be verified is determined; a delay queue node corresponding to a target delay queue is inserted into the target module node, and nodes related to a specified signal group in the target syntax tree are modified; the target delay queue is used to randomly delay the output of the specified signal group; the modified target syntax tree is converted into target code including the target delay queue; the target code is used to verify the interface timing function of the module to be verified. Through the method of syntax tree instrumentation, it is convenient to inject errors into the module to be verified, reducing the complexity of error injection and the requirement threshold for the professional skills of verification personnel. At the same time, there is no need for verification personnel to write test cases corresponding to different transmission delays one by one, saving verification time and improving verification efficiency to a certain extent.

The application discloses a communication method based on a 485 bus and a smart home system, and relates to the technical field of communication, and aims at solving the problem of low communication efficiency of the 485 bus caused by the random delay method for solving the 485 bus conflict in the traditional 485 bus multi-master communication process. The method comprises the following steps: when a plurality of master devices receive data error indication sent by a slave device, at least two master devices determine delay time for delaying data transmission according to the device address of the self device, and the remaining master devices except the at least two master devices enter a waiting transmission state. A first master device with the shortest delay time among the at least two master devices sends data to the slave device again when the first delay time of the self device arrives, and if the plurality of master devices all receive data correct indication, the master devices except the first master device among the at least two master devices send data again.

The invention discloses an optical communication device configuration and authentication method and device, an optical communication device and an optical communication system, and belongs to the technical field of optical communication. The configuration method comprises the following steps: a first optical communication device determines a random time delay parameter, wherein the random time delay parameter is less than 48 [mu] s; and sending a broadcast message to a plurality of second optical communication devices, the broadcast message carrying configuration information, and the configuration information being used for configuring a random time delay parameter. The first optical communication device can flexibly configure the random time delay parameter of the second optical communication device through the broadcast message.

The application discloses a method for multi-access point contention response based on random time delay. The application relates to the technical field of wireless communication, and solves the problems of wireless node retransmission, increased delay, and even connection interruption caused by high conflict probability due to the fact that multiple wireless access points simultaneously receive signals. The method comprises the following steps: after a wireless node terminal is online, an access point contention inquiry instruction is sent, and all wireless access points in a channel receive the instruction; the wireless access points reply response information carrying signal strength information to the wireless node terminal by using random time delay response; and the wireless node terminal selects a wireless access point with the highest received signal strength as a main access point. The application can improve the communication reliability of equipment, avoid problems such as data loss and time delay, and improve transmission efficiency. For low-power wireless nodes, the radio frequency retransmission power consumption of the wireless node equipment can be further reduced, and the effective use time is prolonged.

Method, modules and a system formed by connecting the modules for controlling payloads are disclosed. An activation signal is propagated in the system from a module to the modules connected to it. Upon receiving an activation signal, the module (after a pre-set or random delay) activates a payload associated with it, and transmits the activation signal (after another pre-set or random delay) to one or more modules connected to it. The system is initiated by a master module including a user activated switch producing the activation signal. The activation signal can be propagated in the system in one direction from the master to the last module, or carried bi-directionally allowing two way propagation, using a module which revert the direction of the activation signal propagation direction. A module may be individually powered by an internal power source such as a battery, or connected to external power source such as AC power.

This invention provides a method, system, and storage medium for vector signal analysis and processing at the uplink signal receiver of a wideband code division multiple access (WCDMA) wireless communication system. It is used to perform frequency domain and modulation domain index measurements, channel decoding, and other processing on the uplink signal of a WCDMA wireless communication system. The beneficial effects of this invention are: by using an R&S cellular test instrument to sample WCDMA uplink signals, the various processes of this invention were debugged. Under conditions of AWGN, DC bias of -39dB, random delay, and random frequency offset, the uplink signal waveform of WCDMA FDD was generated. Simulation processing of various processes, including synchronization, carrier frequency offset estimation and compensation, descrambling, equalization, and despreading, was performed. The DC bias and error vector amplitude (EVM) of the uplink signal were measured, and the downlink physical control channel (DPCCH) and downlink physical dedicated channel (DPDCH) were demodulated and decoded. The CRC check of the DPDCH channel passed, verifying the correctness of each process.

Embodiments of the present application provide a ranging method, an electronic device and a storage medium, wherein the method comprises: sending a ranging instruction to a second node, wherein the ranging instruction at least comprises a ranging time slot indication, and the ranging time slot indication is used to indicate a time region in a corresponding logical frame structure in which the second node sends data in response to the ranging instruction; receiving ranging response content sent by the second node, wherein the ranging response content at least comprises random delay information of the second node and response duration information of the second node; determining equivalent delay information of the second node according to a sending time of the ranging instruction, a receiving time of the ranging response content, the ranging time slot, and the ranging response content; and sending the equivalent delay information to the second node. The embodiments of the present application can implement device ranging in a low-delay scenario, without interrupting normal service transmission, and can guarantee the stability of service transmission.

The invention relates to the field of encryption processing, and provides a PCIe-based hardware acceleration AES remote dynamic encryption method and system. The method comprises the following steps: generating an initial encryption key, and transmitting the initial encryption key to a local host to obtain local key data; sending the to-be-encrypted data to the FPGA hardware module, and performing encryption processing on the to-be-encrypted data through a pipeline to obtain encrypted output data; during encryption processing, receiving updated key information through the double-buffer key storage structure, and switching keys through the updated key information to obtain dynamically updated encryption configuration; performing randomized adjustment on the time sequence characteristics and the power consumption characteristics in the pipeline encryption processing process to generate an encryption execution environment; and performing encryption processing on the encrypted output data based on the encryption execution environment and the dynamic update encryption configuration to obtain final output data. On-line dynamic updating of the secret key is achieved through a double-buffering secret key storage structure, the PCIe bus bandwidth is fully utilized in combination with a full-assembly-line encryption architecture, and side channel attacks are effectively resisted through random delay insertion and a power consumption balancing mechanism.

The present application relates to the technical field of sensor connection control, and particularly relates to a wireless connection method of a power sensor, which comprises the following steps: each sensor is activated and parameter configured respectively after arriving at a scene, each sensor takes the time of completing parameter configuration as an initial start time T1; all the sensors are grouped, and each sensor in each group is respectively set with a time offset T2=T g +G i ×T s , wherein T g is a group wake-up period of a corresponding sensor in a group, G i is a group number of the corresponding sensor in the group, and T s is an inter-group step length of the corresponding sensor in the group; each sensor is respectively increased with a random delay T3, and the random delays of each sensor in the same group are not repeated; a wake-up period T of each sensor is T1+T2+T3, each sensor is started after being woken up according to the wake-up period, a main device is wirelessly connected with a corresponding sensor after receiving, and the sensor is restored to a sleep state after sending state data.

The invention relates to the technical field of train control, and provides a rail transit application-oriented inquiry-response type distance measurement method and device and a medium, and an inquiry machine and a response machine are respectively arranged at a vehicle-mounted radar terminal and a trackside radar terminal; the method comprises the following steps: an interrogator and a responder calculate respective signal processing fixed time delays; the interrogator transmits an interrogation signal to the responder; the responder receives the inquiry signal and generates and transmits a response signal after the first correlation peak is detected; a responder signal processing fixed time delay and a random delay time delay are added into the response signal; and the interrogator receives the response signal, and after a second correlation peak is detected, the measurement distance is calculated based on the moment corresponding to the correlation peak of the response signal, the interrogator signal processing fixed time delay, the responder signal processing fixed time delay and the random response time delay. According to the invention, continuous, real-time and high-precision distance measurement can be realized, the distance measurement is not influenced by the environment, the driving safety capability of the train is improved, and the accident occurrence probability is reduced.

The embodiment of the invention provides a motor modulation period data processing method and device, electronic equipment and a storage medium, and the method comprises the steps: firstly, obtaining the current random delay time corresponding to a current modulation period of a motor, and the preorder random delay time corresponding to a preorder modulation period; then, on the basis of the current random delay time, the preorder random delay time, the smoothing coefficient and the fixed sampling period of the motor, smoothing weighting calculation is carried out, a target switching period corresponding to the current modulation period is obtained, and the target switching period is located in the switching period range; and finally, a control signal is generated based on the target switching period to drive the motor, so that the reliability of modulation control is effectively improved while the electromagnetic radiation index of the motor driving control system is ensured to be improved.

This invention relates to the field of parallel system technology, and in particular to a control method, control device, and storage medium for a parallel system. The method includes: after entering a parallel state, acquiring its own random code and random delay, and entering a waiting state based on the random delay; if no first control command is received from other controllers during the waiting state, then acting as the master and sending the first control command to all other controllers; receiving a slave command including the slave's random code sent by a slave device; in response to the slave command, allocating a virtual parallel address to the slave device from an address list, and sending a response command including the virtual parallel address to the slave device; acquiring the total number of currently connected slave devices, setting a transmission period based on the total number, and sending a second control command to all slave devices according to the transmission period; and receiving a slave data command sent by each slave device in response to the second control command based on its own random delay. This invention eliminates the need for manual address adjustment, improving convenience and reducing costs.

The invention discloses a terminal equipment access method, device and system based on a Modbus and a storage medium, and the method comprises the steps: sending a preset number of detection messages to terminal equipment on each port bus; if a preset number of detection response messages fed back by the terminal equipment according to a random delay response mechanism are obtained and the detection response messages fed back by the same terminal equipment each time are the same, extracting identity identification information corresponding to the terminal equipment, matching the identity identification information with pre-configured identity identification information, and if the matching is consistent, sending the terminal equipment to the terminal equipment; performing identity authentication on the terminal equipment; after the authentication is passed, a Modbus address is allocated to the terminal equipment; and sending an association message to the terminal equipment according to the configured Modbus address, and when verifying that the Modbus address is successfully configured based on a response message sent by the terminal equipment, indicating that the access of the terminal equipment is completed. According to the method, the equipment access compatibility, debugging efficiency and safety are improved, the access standardization and automation are promoted, and the operation and maintenance cost is reduced.

The invention discloses a virtual digital outbound intelligent customer service system based on generative AI, relates to the technical field of virtual customer service management, and solves the technical problems that the system lacks an effective monitoring mechanism for self service quality and has a single encryption processing mode for interactive data. According to the method, the overall state of the intelligent customer service is monitored in real time by calculating multi-dimensional indexes such as the knowledge anchor-free answer rate, the semantic ambiguity answer proportion and the high-frequency complaint question association rate, management personnel can conveniently optimize a knowledge base, an answer template or a service process in a targeted mode, the user service experience and the system reliability are improved, and the user experience is improved. A random modification feature is generated according to the byte size of a data packet, the data packet is dynamically bundled and sent out of order, and a random delay transmission strategy is introduced, so that analysis of an attacker on traffic features is effectively interfered, data eavesdropping and content tampering are prevented, and the security and privacy of user interaction information in the transmission process are guaranteed.

This invention relates to the field of online speaker logging technology. To address the problem that full-scale memory attention mechanisms often introduce interference from numerous irrelevant speakers or background noise, which not only increases computational burden but may also reduce the model's discrimination accuracy, this invention provides an online speaker logging method and system based on a memory bank and weighted random delay. The online speaker logging method based on a memory bank and weighted random delay includes obtaining an input acoustic feature sequence of a given length; converting the input acoustic feature sequence into a sequence of speaker activity probabilities using an online speaker logging model; wherein the online speaker logging model includes a causal embedding encoder, a convolutional lookahead layer, and a memory-aware online attractor decoder connected in series, which can fully utilize long-term future information and memory bank information, improving the ability to identify unseen speakers.

The invention relates to the technical field of network testing, in particular to a system for remotely and centrally managing a notebook computer to carry out WLAN testing. The method comprises the following steps: uniformly issuing a WLAN test task containing a target network, test duration and delay parameters through a remote centralized management end; each notebook terminal generates a random delay value according to a system load and executes a test in sequence; when the user activity is detected, automatically interrupting and recording the position; and then continuous testing is recovered according to the interruption position, and finally a complete testing result and interruption information are uploaded to a management end. Unified management and peak shifting execution of multi-terminal WLAN testing are achieved through a remote centralized issuing and intelligent delay scheduling mechanism, and the stability and continuity of the testing process and the integrity and reliability of the result are guaranteed by combining the user state monitoring and interrupted testing technology.

The embodiment of the invention provides a conflict optimization method and device, and communication equipment, and is used for first communication equipment, and the method comprises the steps: transmitting a tuning instruction and a Diseqc protocol instruction; in response to the conflict of the sent Diseqc protocol instruction, determining a random delay processing duration; after the random delay processing duration is delayed, processing is carried out according to a conflict type, and the conflict type includes that the opposite terminal equipment cannot lock the frequency indicated by the tuning instruction, and the frequency locked by the opposite terminal equipment is not the frequency indicated by the tuning instruction; wherein the random time delay processing duration comprises basic time delay and back-off time, the basic time delay is determined according to a user frequency band of the first communication equipment, and the back-off time is determined according to a random number. By adopting the scheme, the probability of conflicts can be reduced.

Method, modules and a system formed by connecting the modules for controlling payloads are disclosed. An activation signal is propagated in the system from a module to the modules connected to it. Upon receiving an activation signal, the module (after a pre-set or random delay) activates a payload associated with it, and transmits the activation signal (after another pre-set or random delay) to one or more modules connected to it. The system is initiated by a master module including a user activated switch producing the activation signal. The activation signal can be propagated in the system in one direction from the master to the last module, or carried bi-directionally allowing two way propagation, using a module which revert the direction of the activation signal propagation direction. A module may be individually powered by an internal power source such as a battery, or connected to external power source such as AC power.

The embodiment of the invention provides a simulation control method, device and system for a smart home and a medium, and the method comprises the steps: entering a simulation control mode in response to a control starting instruction, obtaining the starting time and ending time of simulation of the smart home, and enabling each target device of the smart home to have a corresponding starting state; when the current time reaches the starting time, starting timing after a first random delay time period is randomly generated, and after timing of the first random delay time period is finished, controlling at least one target device to execute a state overturning action for the starting state once; entering a cycle control stage, starting timing after a second random delay time period is randomly generated in each cycle control period, and controlling at least one target device to execute a state overturning action once after timing of the second random delay time period is finished, and entering a next cycle control period; and when the current time reaches the end time, the cycle control stage is terminated, and the analog control mode is quitted, so that the intelligence of the smart home is enhanced.