155 results about "Time system" patented technology

The invention relates to the technical field of real-time kernel performance testing of special chips, in particular to a special chip real-time performance evaluation method based on an FPGA (Field Programmable Gate Array), which comprises the following steps: (1) aiming at a real-time system on an ASIC (Application Specific Integrated Circuit) chip, setting an external interrupt source and an interrupt service program through a hardware interrupt controller; (2) two tasks with the same priority are created, scheduling of the tasks is achieved through time slice rotation, and a real dynamic load scene is simulated; (3) configuring an external FPGA (Field Programmable Gate Array) to generate a square wave signal to trigger external interruption of the ASIC chip, receiving a feedback signal, and connecting the FPGA and the GPIO through an external physical connecting line to form a hardware interruption triggering-response closed loop; and (4) realizing nanosecond timestamp capture through a counter built in the FPGA, acquiring time delay data, calculating interrupt response time, and transmitting the time delay data to a PC (Personal Computer) through a UART (Universal Asynchronous Receiver / Transmitter) to calculate a maximum value, a minimum value, an average value and a data jitter range of test data. The method can effectively solve the problem that the traditional internal closed-loop test cannot reflect the real interruption randomness and the dynamic load.

To provide a digital broadcast receiver capable of executing a function with higher added value. 【Solution means】A broadcast receiving apparatus capable of receiving video data of a digital broadcast program transmitted in each of a first media transport method and a second media transport method, which are at least two media transport methods having different time systems, the apparatus comprising: a first receiving unit that receives program video data transmitted in the first media transport method; a second receiving unit that receives program video data transmitted in the second media transport method; and a video information generation unit that generates output video information by synthesizing the program video data of the two media transport methods based on different time systems after synchronizing the presentation of the program video data in the two media transport methods based on different time systems by using the correspondence relationship of the notations in each time system regarding the presentation times of the program video data in the two media transport methods based on different time systems; and a display unit that displays the output video information.

The invention discloses a six-degree-of-freedom multi-spacecraft control experiment platform and method based on semi-physics-virtuality, belongs to the technical field of spacecraft system and control system simulation, and constructs a multi-spacecraft system composed of semi-physics spacecrafts and pure virtual spacecrafts. The attitude of the semi-physical spacecraft is simulated by a simulator mounted on a three-dimensional attitude air floating table, is acquired by a sensor and is converted into a rotation matrix form, and a translation part of the semi-physical spacecraft is virtually calculated through a simulation integrator; the pose of the virtual spacecraft is virtually simulated by an SE (3) integrator with high-guarantee geometric characteristics; the system takes the ROS as a communication framework, and realizes state and instruction release by adopting a custom message; and ensuring that the time system of each spacecraft is consistent with the real time through a time synchronization mechanism. The platform supports cooperative operation of a semi-physical spacecraft and a pure virtual spacecraft, and has the characteristics of flexible structure, high simulation precision and good expandability.

Systems and methods for assigning a lane to an object in an environment of an autonomous vehicle are disclosed. The methods include assigning an instantaneous probability to each of a plurality of lanes in the environment based on a current state of the object, generating a transition matrix for each of the plurality of lanes, and identifying the lane in which the object is moving at the current time t based on the instantaneous probability and the transition matrix. The instantaneous probability is a measure of likelihood that the object is in that lane at a current time. The transition matrix encodes one or more probabilities that the object transitioned either into that lane or out of that lane at the current time.

The invention relates to a self-correction hybrid power regulation method based on working condition compensation. The method comprises the following steps: monitoring and collecting a group of system real-time data streams; accessing a three-dimensional mapping model and indexing a group of load segmentation thresholds matched with the real-time system working conditions; generating a power reference value and a real-time power calculation value respectively by using the real-time data and the load segmentation threshold value; judging whether interval offset occurs or not based on the change trend of the real-time system load, and resetting the real-time power calculation value by using the power reference value when the interval offset occurs; monitoring a correction offset generated during resetting, and performing three-dimensional mapping on the model based on the correction offset; and outputting the reset real-time power calculation value as a final power regulation instruction. The method can utilize the high resolution characteristic of real-time parameters, and also can periodically correct accumulative errors through a reference model capable of being adaptively updated, so that high-precision and long-period stability can be realized at the same time under complex and changeable working conditions.

The application discloses a kind of trusted time stamp devices, it is related to trusted time technical field, including: trusted satellite time signal receiving module, for identifying and receiving time signal from satellite navigation system provided, and through signal discrimination mechanism, resist and filter out the satellite signal of forgery or tampering, obtain trusted satellite time signal;Trusted optical fiber time signal receiving module is used to identify and receive the trusted optical fiber time signal originating from ground-based time service system, obtain trusted optical fiber time signal;Trusted NTP time signal receiving module is used to synchronize trusted NTP reference time from trusted time system with NTS protocol two-way identity authentication and encrypted mode, obtain trusted NTP time signal;Trusted time signal selection module is used to select trusted satellite time signal, optical fiber time signal and NTP time signal according to priority;Trusted time stamp verification module is used to realize the stamping and verification of time stamp;The application can ensure that the time used for stamping is trusted.

The invention provides an intelligent operation and maintenance method and device for a rail transit communication system based on a large model, and relates to the technical field of intelligent operation and maintenance, the method is applied to an intelligent computing power medium station, and the intelligent computing power medium station is obtained by training a general large model based on professional data corresponding to the rail transit communication system. Comprising the following steps: acquiring system real-time data corresponding to a rail transit communication system acquired by sensing equipment; determining an intelligent operation and maintenance instruction corresponding to the rail transit communication system based on the system real-time data; sending an intelligent operation and maintenance instruction to execution equipment; the intelligent operation and maintenance instruction is used for indicating the execution equipment to execute an intelligent operation and maintenance scheme corresponding to the intelligent operation and maintenance instruction for the rail transit communication system. According to the technical scheme, the intelligent computing power middle table is obtained according to the general large model training, the rail transit communication system is intelligently operated and maintained through the sensing equipment, the intelligent computing power middle table and the execution equipment, the operation and maintenance efficiency and the operation and maintenance accuracy are improved, and the labor cost is reduced.

The invention provides a real-time redundancy fault-tolerant communication system based on double RS-485 links, and belongs to the technical field of industrial communication and real-time control, the real-time redundancy fault-tolerant communication system comprises two electrically independent and logically cooperative RS-485 physical links, at least one master node and a plurality of slave nodes, the first RS-485 link is used for sending data frames to the slave nodes by the master node, and the second RS-485 link is used for sending data frames to the slave nodes by the slave nodes; the second RS-485 link is used for sending a feedback frame from the slave node to the master node, the slave node and the master node form a parallel or alternate pipelined communication relationship in time, the feedback frame comprises two timestamps, the first timestamp records the moment when the slave node receives the data frame, and the second timestamp records the moment when the slave node sends the feedback frame. The system is simple in structure, low in cost, high in real-time performance and high in reliability, is suitable for real-time systems of industrial control, robots, motion control and the like, and is a low-cost alternative scheme of the real-time Ethernet.

The invention provides a task scheduling method, a scheduling system, a client and a computing device cluster, and the method comprises the steps that the scheduling system obtains information of a first computing task, the information of the first computing task comprises first execution time of the first computing task, and the first execution time is time under a first time system; and the scheduling system determines a first time period corresponding to the first calculation task from the plurality of time periods according to the first execution time, and schedules the first calculation task when the current time is in the first time period. Wherein the multiple time periods are different time periods under the second time system, the second time system and the first time system are different timing systems, the first execution time corresponds to second execution time under the second time system, and the second execution time is located in the first time period. According to the scheme, the management complexity of the calculation task can be reduced.

The present invention comprises a cuff (20), a cuff pressure adjustment unit (32, 33), and a pressure sensing unit (31) that senses cuff pressure. During a pressure release process, the time at which a waveform feature point of a pulse beat was generated for each pulse of a pulse wave indicated by an artery passing through a measurement target site is recorded. During the pressure release process, a memory (51) is caused to sequentially store, as a data pair, the time at which the waveform feature point of the pulse beat was generated and the cuff pressure at that time. The cuff pressure is displayed on an indicator (50).In the pressure release process, an observer listening for a Korotkoff sound with a stethoscope while observing the cuff pressure displayed on indicator (50) operates an operating unit (52B) and inputs a time signal indicating the time at which the observer judged that the generation of the Korotkoff sound had ceased. A data pair corresponding to one pulse beat preceding a data pair corresponding to the time is specified, and a cuff pressure contained within the specified data pair is recorded as a corrected diastolic blood pressure value.

The present invention discloses a multi-laser gun simulation training system based on time marking and its control method, including a scene image device, a main console, a time synchronization controller mechanism, a plurality of laser guns, and an image acquisition device. It is implemented by using a time signal as an identifier. The time synchronization controller mechanism periodically sends a master control time signal for forced synchronization to the plurality of laser guns and the image acquisition device, so that the plurality of laser guns and the image acquisition device are synchronized with their own time timers, enabling the time synchronization controller mechanism, the plurality of laser guns, and the image acquisition device to be in a time system. It overcomes the drawbacks in the prior art, realizes that for multiple laser guns, only one image acquisition device is needed to complete the acquisition and recognition of shooting information, saves the cost of equipment, and can flexibly adjust the number of laser guns, increasing the convenience of use. Moreover, it can accurately and quickly perform information acquisition and recognition, giving users a better shooting experience.

The present application relates to the technical field of power equipment state monitoring and centralized alarm, in particular to a distributed disconnecting switch operation state centralized alarm system. The system receives state events and operation command records uploaded by the distributed disconnecting switch through the centralized alarm processing end, generates aligned state sequences of the same operation process according to the event time, message sequence and the last trusted state; obtains state transition residuals through the software state machine containing stable split position, stable closed position and transition state, and generates topological consistency residuals in combination with the one-time system topological constraint relationship, and forms time consistency residuals according to the command issuing time, the first variable position time and the final stable state time. The system can distinguish the real disconnecting switch operation abnormality from the data abnormality caused by message disorder, delay and jitter, and improve the reliability of centralized alarm judgment and the consistency of alarm object positioning.

The invention provides a multi-sensor time synchronization method, electronic equipment, a storage medium and a program product, which are applied to an intelligent driving system comprising a domain controller and a first-class sensor which does not support a GPTP protocol. The method comprises the following steps: receiving a second pulse signal from a first type of sensor and a data message carrying an internal timestamp by a domain controller; capturing receiving moments of at least two continuous second pulse signals under the domain controller time system, and calculating a second scale ratio between the first type sensor time system and the domain controller time system; based on the second scale ratio and a timestamp in the data message, performing conversion to obtain a mapping time point of a data generation moment of the first type of sensor in a domain controller time system; and determining the mapping time point as a data generation moment of the first type of sensor in the domain controller time system. The high-precision time synchronization between the first-class sensor and the domain controller which do not support the GPTP protocol is realized.

An embodiment of the present disclosure provides a method, device, and storage medium for intrusion detection in a container environment, which invokes an event identification model corresponding to a target container to perform event identification on real-time system events, the event identification model being constructed based on the historical normal system events of the target container, and if it is determined that the real-time system events are not normal system events, invokes pre-configured intrusion detection rules to perform intrusion detection on the real-time system events and determine whether the real-time system events are intrusion events. Utilizing the unity and stability characteristics of the container, an event identification model corresponding to the target container is constructed based on the historical normal system events of the target container, and can accurately identify whether the real-time system events are normal system events based on the event identification model. Furthermore, real-time system events belonging to normal system events are filtered, and full intrusion detection is performed on the unfiltered real-time system events, thereby reducing the amount of intrusion detection data, reducing resource occupation, and improving intrusion detection performance and efficiency.

A time imparting method for imparting a time to two or more pieces of pulse data of a laser apparatus that burst-oscillates a pulse laser beam, includes causing a first processor including a real-time system to receive a first light emission trigger signal from a laser irradiation device and to measure a time interval between a previously received second light emission trigger signal and the first light emission trigger signal in the real-time system, and causing a second processor to receive the time interval from the first processor, and when the time interval is smaller than a set value, to impart a time obtained by adding the time interval to a time imparted to pulse data of a pulse laser beam corresponding to the second light emission trigger signal, to pulse data of a pulse laser beam corresponding to the first light emission trigger signal.

The disclosed techniques provide dynamically controlled notifications that improve inclusiveness in online meetings. The dynamically controlled notifications can be audio or visual indicators that supplement a first notification. A user input causes the display of the first notification, an image of a “virtual hand raise.” The input also invokes a timer for measuring an elapsed time from the time of the user input. The system also analyzes audio streams to detect topic transitions of a discussion of the meeting participants. Then, the system generates dynamically controlled notifications in response to at least one triggering event, either (1) in response to detecting that the timer has reached a time threshold or (2) in response to a detection of that the discussion has transitioned to a new topic. In some embodiments, the dynamically controlled notifications are invoked in response to either of the two triggering events, whichever event is detected first.

The present invention relates to a method of determining contractual compliance of an industrial process comprising acts of colleting sensor data representing event conditions at / or related to the industrial process, inputting the collected data to a data processing apparatus, logging at least a timestamp and a position of the collected data, matching 5 and comparing contractual requirements of the industrial process to at least one event for determining contractual compliance. The events are logged with a time stamp synchronized to an external clock operating a globally unique time system.

The invention discloses an electric heating load control method, device and equipment of a new energy power system. The method comprises the following steps: acquiring a real-time system frequency of the new energy power system; calculating the fluctuation amplitude of the current system disturbance according to the real-time system frequency and a preset reference system frequency; when the fluctuation amplitude is smaller than a preset threshold value, calculating adaptive input power, corresponding to the real-time system frequency, of the electric heating load according to a preset simulation control strategy; the simulation control strategy is generated according to the power and frequency response characteristics of the electric heating load; controlling the input power of the electric heating load through the thyristor power regulator based on the adaptive input power; according to the method, the small-amplitude frequency disturbance is automatically and stably adjusted in real time through an analog control strategy; therefore, the frequency flexible adjustment of the new energy power system by the electric heating load can be realized.

The present invention relates to a method of determining at least one event of an industrial process at an industrial site, comprising acts of collecting sensor data representing conditions at / or related to the industrial site, inputting the collected data to a data processing apparatus, performing data analysis on the one or more of the inputted data using feature extraction for determine at least one event, logging a timestamp and a position of the at least one determined event, and synchronising the at least one event with the data inputted to the data processing apparatus to form a structured dataset, storing said structured dataset in a database. The time stamp is synchronized to an external clock operating a globally unique time system. The present invention also relates to a system configured to perform the method. The present invention further relates to a computer program configured to execute the method and a computer-readable medium configured to store the computer program.

A heterogeneous multi-core system to execute a real-time system of an automobile includes a plurality of system-on-chips in electronic communication with one another. Each system-on-chip includes a plurality of central processing units (CPUs) arranged into a plurality of logical domains. The heterogeneous multi-core system also includes a plurality of dispatched tasks that execute based on an execution pipeline and each perform a particular set of tasks for one of the logical domains. The plurality of dispatched tasks includes at least one offset dispatched task that executes at an offset time and a reference dispatched task that is located upstream of the execution stage of the offset dispatched task on the execution pipeline. The reference dispatched task communicates data to the offset dispatched task and the offset time represents a period of time measured relative to the reference dispatched task.

Systems, methods, and devices provide efficient wake operations and boot times for electronic devices. Methods include initiating, using one or more processing elements, a boot operation associated with a plurality of power domains, and determining, using the one or more processing elements, a type of the boot operation based, at least in part, on current status information identifying a current status of each of the plurality of power domains. Methods further include determining, using the one or more processing elements, one or more authentication operations based, at least in part, on the type of boot operation and a configuration of the plurality of power domains being booted, performing, using the one or more processing elements, the one or more authentication operations prior to booting the power domain.

Systems and methods are described for handling connection rejection on behalf of a source WTRU to a WTRU (U2U) relay via a wireless transmit / receive unit (WTRU) associated with a fallback time. The relay WTRU may retry to establish a connection with the target WTRU on behalf of the source WTRU, e.g., based on receiving a rejection (e.g., with a fallback value) from the target WTRU. The source WTRU may associate the rejection message with the target WTRU, and the relay WTRU may be available to contact other target WTRUs. The relay WTRU may send reject messages to other source WTRUs for the same target WTRU (e.g., if the fallback duration is active, is running).

The application discloses a kind of intelligent wearable equipment with low-power consumption control function of scheduling follow, comprising: shell;Identity recognition interaction unit is set to the surface or inside the shell, for collecting the identity identification information of current taking personnel in taking stage;Multi-dimensional perception positioning unit is set to the shell, for switching to full-function operating state according to activation instruction, and switching to dormancy inhibition state according to dormancy instruction;And controller, for obtaining the taking personnel identity identification information downloads the target scheduling table of unique binding, real-time system time is obtained and the system time is compared with the target scheduling table;When determining that the system time is in the working period, generate activation instruction and send to the multi-dimensional perception positioning unit;When determining that the system time is in the non-working period, generate dormancy instruction and send to the multi-dimensional perception positioning unit.

The embodiment of the invention provides an SLAM (Simultaneous Localization and Mapping) positioning method and device based on timestamp correction, equipment and a storage medium. The method comprises the following steps: acquiring a time compensation value, an image observation result and a system state of each window in a current sliding window; constructing an SLAM model according to the time compensation value of the window in the current sliding window, the image observation result and the system state, wherein the time compensation value is the time deviation between the time system of the camera and the time system of the IMU; and the SLAM model is solved to obtain to-be-estimated parameters, and the to-be-estimated parameters comprise the system state of each window in the current sliding window and a to-be-estimated time compensation value. In the method, the time compensation value and the system state are modeled together, so that continuous iterative optimization can be performed on the time compensation value, the time compensation value is used to compensate the time system of the camera, and the compensated time system of the camera is used to perform SLAM model modeling, so that the estimation result of the SLAM system is more accurate.

A task online update system under the condition of memory limitation in a spacecraft real-time system, including a ground maintenance module for system symbol information, a ground generation module for injection data packets, and an on-board processing module for injection data packets; the ground maintenance module for system symbol information checks whether the injection program conflicts with the spacecraft memory allocation; the ground generation module for injection data packets encapsulates the header information of the program to be injected, program running information, task attribute information, and executable binary files into an injection data packet file; the on-board processing module for injection data packets, after receiving the instruction to parse the injection program, parses the injection data packet file in the idle task according to the protocol format, and after the parsing is completed, adds a new task to the scheduling table or replaces an original task. The present invention also provides an online update method. The present invention enables the spacecraft to have the task-level system expansion ability, realizes the addition or replacement of tasks, upgrades the on-board software of the spacecraft in a timely manner according to the task requirements, and endows the spacecraft with new functions.

A SLAM positioning method and apparatus based on timestamp correction, a device, and a storage medium are provided. The method includes: acquiring a time compensation value, an image observation result, and a system state of each sub-window in a current sliding window; constructing a SLAM model based on time compensation values, the image observation results and the system states of the sub-windows in the current sliding window, where the time compensation value is a time deviation between a time system of a camera and a time system of an IMU; solving the SLAM model to obtain a parameter to be estimated, including the system state and the time compensation value to be estimated of each sub-window in the current sliding window.

The application discloses an energy-saving scheduling method for self-hanging real-time tasks, and belongs to the field of real-time system scheduling and energy efficiency management. The method gives a task division strategy by considering the load difference of tasks and processors on a multi-core CPU platform. On a GPU platform, the real-time performance and energy consumption are balanced by selecting a suitable execution core. Through the combination of the two, energy-saving scheduling and task division for a multi-core CPU and GPU heterogeneous computing platform are realized. The energy consumption of the CPU and the GPU can be optimized synergistically on the premise of guaranteeing the real-time task deadline. A system-level energy efficiency perception scheduling framework is constructed, which is suitable for real-time cyber-physical systems, automatic driving, embedded vision and other scenes with strict requirements for energy efficiency and timing.

The application discloses a time synchronization system and method of a handheld multi-sensor fusion scanning platform, and the system comprises an upper computer and a microcontroller configured as a main clock source of the system; the microcontroller is used for generating at least a message synchronization control pulse signal, a hardware trigger pulse signal and a serial time message defining a main time system; the upper computer comprises a time synchronization device running a raw data receiving module, a time stamp synchronization calibration module and a data storage and visualization module, different time synchronization strategies are adopted for different sensors, including external direct time service, time system offset calibration and trigger acquisition and low-delay near-neighbor matching strategy. The application uses a microcontroller as a synchronization core, and realizes a hardware time synchronization precision of sub-millisecond level without any expensive external synchronization equipment; the time synchronization system and method have high flexibility and robustness, and can guarantee efficient and low-delay data processing.

The application discloses a method for protecting time stamp of embedded system, which is executed based on a time stamp protection time correction module in the embedded system, and comprises the following steps: step S1, optimizing the floating point operation function of the compiling tool used by the time stamp protection time correction module, and eliminating the problem of abnormal zero of the floating point operation result; and step S2, the time stamp protection time correction module creates a time system data receiving communication link based on a preset configuration, and configures the time system data receiving timeout parameter of the communication link; the application solves the technical problems of time stamp abnormality, false time correction and poor stability caused by step-by-step time correction, operation defects of the compiler, and coupling of the time correction module and the service data processing module.

The invention provides an emergency decision-making method and device for a semiconductor laboratory, equipment and a medium. The method comprises the steps of obtaining a risk assessment model; acquiring an accident decision model; under the condition that any system of the semiconductor laboratory triggers an alarm, determining a target risk assessment result of the semiconductor laboratory based on the risk assessment model and the real-time safety data of the semiconductor laboratory; for the single-node decision model corresponding to each system, determining a target system decision suggestion of the system corresponding to the single-node decision model based on the single-node decision model according to the target risk assessment result and real-time system data of the system corresponding to the single-node decision model; and based on the central decision model, determining a target global decision scheme of the semiconductor laboratory according to the target system decision suggestion corresponding to each system and the real-time system data of all the systems. According to the invention, the accuracy of generating the emergency decision scheme can be improved.