224 results about "Timing system" patented technology

The invention discloses a multi-mode fusion time service method and system based on dynamic calibration of DCP equipment. The method comprises the following steps: completing initial time reference data acquisition based on a multi-mode satellite signal; meanwhile, time data of a ground time service network are collected, and motion parameters of DCP equipment are monitored in real time through an inertial navigation unit; establishing a correlation model of the motion parameter and the time service error; quantitative analysis of error sources is completed based on the correlation model; fusing the multi-source time data; dynamically adjusting the fusion weight of each data source according to the real-time motion state of the DCP equipment; redundant time slots are automatically distributed to high-error equipment; outputting the calibrated time signal to DCP equipment through an interface to complete clock synchronization; and continuously monitoring the time deviation of the DCP equipment, and dynamically updating the calibration parameters to form closed-loop optimization. And the environmental adaptability and the precision stability of the timing system are improved.

The invention discloses a satellite loop simulation test system and method, electronic equipment and a program product. The satellite loop simulation test system comprises a darkroom system used for simulating an electromagnetic propagation environment between a satellite and a terminal; the turntable system is deployed in the darkroom system and is used for controlling the terminal to move in the darkroom system according to the input terminal movement track; the communication system is used for sending a downlink test signal to the terminal and receiving an uplink test signal fed back by the terminal according to the input channel simulation file, and the uplink test signal and the downlink test signal are used for determining a test result of the satellite loop simulation test; and the timing system is used for generating a unified time reference for the turntable system and the communication system, and the turntable system and the communication system operate based on the time reference. The technical problem of how to construct a darkroom test environment in a low-orbit broadband satellite high-speed motion scene so as to verify the end-to-end communication performance of a terminal under a real-time tracking satellite is solved.

A rodeo event timing system having a neck collar adapted to extend around a neck of a calf, a first cable having one end affixed adjacent one end of the neck collar, a second cable having one end affixed adjacent another end of the neck collar, and a switch assembly secured to opposite ends of the first cable and the second cable. The switch assembly is adapted to separate when the ends of the neck collar separate so as to produce a start timing signal. The switch is a magnetic switch having a ball-and-socket configuration.

Systems, apparatus, and methods for performing client-server display timing. A client device may synchronize frame rendering frequency on a server with a client device display frame rate. The server may render frames at the rendering frequency and send the frames to the client device. The client device may determine whether frames were received at a nonoptimal time window and send a pacing message to the server to offset frame rendering. The server may offset the timing of rendering / sending the frame to the client device based on timing data of previous frames at the client device. Frames generated at the server may arrive during an optimal timing window for reduced latency.

The invention relates to the technical field of electronic digital data processing, in particular to an operation fault detection method and system for an HIAF synchronous timing system. The method comprises the following steps: segmenting waveform data to obtain periodic signals, and calculating an initial Euclidean distance between any two periodic signals; calculating a correction coefficient between any two periodic signals; and multiplying the correction coefficient by the initial Euclidean distance to obtain an optimal Euclidean distance, and carrying out LOF anomaly detection by taking the optimal Euclidean distance as a measure. The method and the device have the effect of improving the operation detection precision of the synchronous timing system.

The invention discloses an inter-system synchronization method and device of a navigation positioning time service system, relates to the technical field, and aims to solve the problem that an existing large-scale ground-based PNT system does not consider time synchronization deviation between multiple subsystems, so that PNT service errors are caused by synchronization deviation in an overlapping coverage area of two subsystems. According to the invention, the inter-system synchronization receiver is arranged in the overlapping coverage area of the two subsystems, the synchronization deviation value between the two subsystems is measured through the inter-system synchronization receiver, and the synchronization deviation value is played to the navigation receiver in the overlapping area through the navigation message broadcasting system of the navigation base station; and the navigation receiver receives the synchronization deviation of the navigation base station, corrects the synchronization deviation by adopting a correction algorithm, and then carries out high-precision navigation positioning service.

The invention discloses a timing system with an anti-disassembly function, and relates to the field of coach car data collection, and the system comprises an anti-disassembly label which is installed in a coach car; the anti-tamper detection module is installed in close contact with the anti-tamper tag, and the anti-tamper detection module internally comprises an anti-tamper tag read-write circuit so as to obtain state data of the anti-tamper tag; and the timing equipment host is connected with the anti-disassembly module and is used for periodically reading the label state data so as to automatically trigger an anti-disassembly response when the state of the label state data is lost or the communication is interrupted. The tamper detection module is physically attached to the label, label information is continuously read and written, the host polls and verifies the state regularly, once the label leaves, is disconnected or is shielded, abnormity can be detected, response is timely and accurate, and the problem of misinformation caused by physical false triggering is avoided.

The invention discloses a high-precision clock taming and signal shaping method and device for a satellite timing system. The method comprises the following steps of: counting and measuring a reference pulse per second received in real time by using a local high-frequency clock signal output by a local voltage-controlled crystal oscillator to obtain a phase counting deviation sequence of the local high-frequency clock signal relative to the reference pulse per second; inputting the phase counting deviation sequence into the frequency control closed-loop model, analyzing the historical state characteristics of the phase counting deviation sequence, and calculating a frequency adjustment instruction for the local voltage-controlled crystal oscillator; the frequency adjusting instruction is converted into an analog voltage signal, a local voltage-controlled crystal oscillator is driven to adjust the output frequency, and a tamed local high-frequency clock signal is obtained; the tamed local high frequency clock signal is utilized to drive phase warping logic to generate a local pulse per second synchronized with the reference pulse per second. According to the invention, through adaptive closed-loop control and phase regulation, precise taming of crystal oscillator frequency and high-precision shaping of output signals are realized.

The invention provides an LVDS (Low Voltage Differential Signaling)-based cross-type constant ratio timing system and method, and the system comprises a signal source module which is used for transmitting two paths of same initial signals; the input end of the signal amplification module is electrically connected with the output end of the signal source module, and the signal amplification module is used for amplifying one path of initial signal to obtain an amplified signal; the input end of the signal delay module is electrically connected with the output end of the signal amplification module, and the signal delay module is used for delaying the amplified signal to obtain a delay signal; the input P end of the LVDS comparator is electrically connected with the output end of the signal delay module, the input N end of the LVDS comparator is electrically connected with the output end of the signal source module, and the LVDS comparator is used for comparing the voltage amplitude of the other path of initial signal and the voltage amplitude of the delay signal and outputting a digital signal; and the input end of the time-to-digital conversion module is electrically connected with the output end of the LVDS comparator, and the time-to-digital conversion module is used for recording time information of constant ratio timing triggering of the digital signal. According to the invention, the phenomenon of multiple times of triggering timing can be effectively avoided, so that the reliability and accuracy of constant ratio triggering timing are improved.

The invention discloses a local time pulse signal holding method and system under reference lock loss. The method comprises the following steps: establishing a holding algorithm model of a relationship between frequency control words and drift distances of two digital-to-analog converters; when it is monitored that the second pulse signal of the reference source is in a lock losing state, frequency control words Fw1 and Fw0 of the current round of the two digital-to-analog converters are collected; and inputting the frequency control words Fw1 and Fw0 into the maintenance algorithm model to obtain a new round of frequency control words Fw1 (i) and Fw0 (i) of the two digital-to-analog converters. By compensating the output frequency of the local clock source, the frequency drift of the local clock source caused by factors such as temperature and aging is improved, so that the timing system can still maintain higher frequency output precision within a certain time.

The invention belongs to the technical field of distributed control and intelligent operation and maintenance, particularly relates to a synchronous timing system fault diagnosis method based on unsupervised learning, and aims to solve the technical problems that fault early warning is lagged, hidden coupling faults are difficult to recognize and fault samples are scarce in the prior art. Constructing a time sequence of the multi-dimensional state space; s2, calculating a dynamic control entropy feature representing the disorder degree of the control loop; s3, obtaining a reconstruction sequence of the input sequence, and calculating a reconstruction error vector; and S4, calculating a real-time abnormal score of the synchronous timing system, and judging whether the synchronous timing system enters a metastable fault state or not according to the real-time abnormal score. According to the invention, the early warning of the fault is realized, and the early warning can be given out when the SoftPLL enters the metastable state and does not lose the lock yet.

The invention relates to the technical field of automobile power control, in particular to a self-learning method and device of an engine, a vehicle, a medium and a program product.The method comprises the steps that under the condition that it is detected that the engine is started, if the rotating speed of the engine is within a certain rotating speed interval, the engine is started; and if a rotor of the variable inlet cam timing system of the engine is located at the initial position and the rotor of the variable inlet cam timing system of the engine is located at the initial position, entering a continuous self-learning mode, and collecting camshaft and crankshaft position signals of the variable inlet cam timing system so as to perform phase correction according to the camshaft and crankshaft position signals. Therefore, the problem that the valve timing control effect and the engine performance are affected due to signal deviation or response lag caused by the fact that engine control is conducted depending on fixed parameters or only based on an open-loop adjusting mode in the prior art, long-term operation of the engine and frequent working condition changes in a hybrid power mode are difficult to adapt is solved.

The invention provides a bistatic radar system based on a superheterodyne Rydberg atom receiver. The transmitting end and the receiving end of the system are different in position and are synchronized by a timing system device. A system transmitting end transmits a linear frequency modulation signal, and a system receiving end uses a Rydberg atom receiver to receive an echo of a detection signal reflected by a target. The Rydberg atom receiver is of a superheterodyne structure, that is, a receiving end firstly generates a linear frequency modulation signal consistent with a transmitting end based on a timing system device, then inputs the linear frequency modulation signal and a received echo signal into an atom gas chamber together, then measures the spectral change of probe light penetrating through the atom gas chamber, and realizes target detection mainly according to the measured spectral change. And distance measurement and positioning. The system can utilize the advantages of high sensitivity, small size and the like of the Rydberg atom receiver, and overcomes the defect of insufficient instantaneous bandwidth of the atom receiver through special design.

The invention relates to a multi-time-source PTP time service circuit based on a Loongson SOC, and belongs to the technical field of timing systems. The time service circuit comprises a Loongson SOC, an FPGA, a high-stability crystal oscillator, an RS422 transceiver, a network card, a switch, computing blades 1-6 and an external clock source. According to the design scheme, the performance is stable and reliable, the mode is novel, the problem that interfaces between devices are incompatible in the equipment development process is solved, meanwhile, a design thought is provided for the time service scheme of the reinforced server, and a new solution is provided for transition of a new time service scheme and an old time service scheme. The scheme has been successfully applied to a certain reinforced server.

The invention discloses a high-precision navigation clock frequency module, which relates to the technical field of time service positioning and comprises a receiver module, a multi-source time difference measurement unit, an operation processing unit, a frequency scale signal generation unit and a time code generation unit. Through the highly integrated modular design, the area and the cost of the frequency module are reduced; considering that a synchronization error between a second signal output by a timing system device and an external synchronization second is an important index of the timing system device, the time interval automatic measurement function can continuously measure and monitor the synchronization error between the external synchronization second and the second signal output by the timing system device. And high-precision synchronization among the devices in the system can be better realized. According to the invention, the clock precision in the system can be improved by effectively switching the reference source mode.

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 invention provides a modularized positioning navigation time service system and a positioning navigation time service method, the modularized positioning navigation time service system comprises a plurality of PNT assembly modules and an information fusion module, and the modules realize efficient data interaction through a standardized interaction protocol. The PNT component module is composed of a sensing element, an edge calculation chip and an information transmission interface, the standardized information extraction sub-module is deployed in the edge calculation chip, comprises a parameter setting unit, a parameter characteristic extraction unit, a constraint construction unit and a statistical characteristic extraction unit, and converts output information of a PNT component into a standard form; and the information is transmitted to the information fusion module. The information fusion module comprises an information transmission interface and an intelligent computing platform, intelligent optimization and fusion processing of multi-source PNT information is achieved through an information monitoring sub-module, a parameter adjustment sub-module, a space-time unification sub-module and an intelligent fusion sub-module which are deployed in the intelligent computing platform, and state estimation information is output.

The invention belongs to the field of sports equipment, and relates to campus sports detection equipment, in particular to an early warning accurate timing system for a long-distance running scene in smart sports, which comprises a data intelligent body box, and a wearable heart rate device and a Bluetooth working module are arranged in the data intelligent body box; a six-axis acceleration sensor and a heart rate sensor are arranged in the wearable heart rate equipment; the system further comprises an intelligent Bluetooth base station. The sports safety is detected in real time, the sports risk is greatly reduced, and sports casualties are avoided. And safe dead-angle-free real-time detection is realized. The whole playground is covered through two intelligent Bluetooth base stations with 90-degree teaching signal coverage, heart rate movement data of each student is detected in real time, the heart rate and heart rate abnormity early warning can be displayed in real time in a test, an individual is prompted through bracelet vibration when an abnormity occurs, a physical education teacher is prompted through a tablet computer, and a person on the playground is prompted through Bluetooth sound equipment. And human intervention physical education is carried out.

The present invention provides a short-wave BPM timing receiving device capable of automatically adjusting the second pulse locking cycle, comprising an FPGA unit, a main control unit, a storage unit, an A / D conversion unit and a constant temperature crystal oscillator. The present invention adopts FPGA to realize digital BPM short-wave timing time processing and reception, adopts automatic adjustment of the locking cycle technology to continuously judge and lock the output of the received extracted BPM pulse signal, reduces the situation in which the pulse cannot be judged or there is a judgment error due to the unstable reception quality of the timing signal during the BPM short-wave timing reception process, can be used as an effective supplementary means for satellite timing, and has the function of providing user time information and second pulse signals in real time within the coverage area of ​​the short-wave timing system.

Rodeo and / or equestrian event competition timing systems and associated devices and methods are disclosed. The competition may be an equestrian or rodeo event, including livestock riding and roping including break-away roping. Methods, devices and systems for timing such events are provided. Methods replacing manual and human-eye based event timing for at least one of event starting, event stopping, or both, with automated methods are explained.

This application relates to a high-precision timing system and method based on dual-channel time measurement. The system includes: a filtering module for receiving analog signals output from a particle detector, filtering and denoising the analog signals, and converting the processed signals into two co-source valid signals for output; a time measurement module for receiving the two co-source valid signals, and by configuring a first discrimination threshold and a second discrimination threshold, performing discrimination processing on the two co-source valid signals respectively, capturing the characteristic time when each signal reaches the corresponding discrimination threshold, and outputting the first characteristic time and the second characteristic time; and a data processing module for calculating and storing the high-precision arrival time based on the approximately linear characteristics of the rising edge of the signal pulse, according to the first discrimination threshold, the second discrimination threshold, the first characteristic time, and the second characteristic time. Using this system, particle arrival time measurement can be achieved with both stability and high precision, meeting the application requirements of high-precision timing scenarios.

The invention discloses an NVMe data recording method and system based on an FPGA and a medium. Relates to the technical field of data management. The system is improved on the basis of a traditional NVMe system architecture, a CPU is realized by a programmable logic device FPGA, the system complexity is reduced, and an application is separated from an operating system; meanwhile, based on the characteristics of high flexibility and high-precision timing of the FPGA, the application efficiency of the PCIE interface and the NVMe protocol message is improved, the bandwidth waste is reduced, and the timing system can quickly complete receiving and transmitting of the NVMe protocol message with high precision; according to the NVMe data recording system, method and equipment, synchronization and parallel storage of data of multiple NVMe channels are completed based on the multi-channel synchronization function, the data recording bandwidth is improved, and lightweight high-performance, high-throughput and low-delay SSD read-write is achieved in applications needing high-bandwidth data storage and recording.

This invention relates to the field of navigation and timing technology, specifically to a GNSS timing data prediction method and related equipment. The method involves acquiring Roland timing data when GNSS timing data is invalid and preprocessing it. The preprocessed data is then input into a trained single-hidden-layer extreme learning machine model. This model calculates the hidden-layer output matrix by randomly initializing the input layer weight matrix and bias vector, and solves for the output weights using regularized least squares. The model outputs a normalized GNSS timing data prediction value, which is then denormalized to obtain the final GNSS timing prediction result. This method combines the high stability of the Roland system with the efficient computational power of the extreme learning machine to achieve accurate GNSS timing data prediction. It is suitable for enhancing the resilience of positioning, navigation, and timing systems in critical infrastructure scenarios, ensuring the continuous operation of the system even when GNSS signals are interfered with or fail.

A method includes a mobile device receiving a plurality of first signals from one or more first transmitters in a network. Each first signal has first data including an associated time that is non-synchronized to the time of another first signal of the plurality of first signals. One or more processors synchronizes the associated time of each first signal to a common time scale. One or more processors determines a position of the mobile device using a common time scale of the plurality of first signals.

The invention relates to an electricity-hydrogen-chemical-storage-heat multi-energy coupling system intelligent regulation and control simulation verification platform and method based on a distributed architecture, and the platform comprises an energy management and control platform which employs a cross-time-scale layered regulation and control architecture and comprises an optimization scheduling layer and a cooperative control layer; the optimization scheduling layer generates a multi-time scale scheduling instruction from a second level to a day level based on a multi-target dynamic optimization function; the cooperative control layer receives an instruction of the optimization scheduling layer, and executes real-time electricity-hydrogen-storage-heat cooperative frequency and voltage regulation control through a power balance controller, a heat supply network balance controller and a hydrogen transmission balance controller; the distributed simulation system is used for truly simulating dynamic behaviors of the physical system; and the timing system is used for providing a global clock synchronization signal for the energy management and control platform and the distributed simulation system. According to the method, a high-precision, high-real-time and high-reliability simulation verification means is provided for coal-based chemical green low-carbon transformation, the engineering risk can be remarkably reduced, and the flexibility and economical efficiency of the system are improved.

The present disclosure provides a method, apparatus, transportation vehicle, and storage medium for restoring a system clock. The specific solution includes: when a microcontroller unit (MCU) switches from a sleep state to a wake state, reading the time of a real-time clock (RTC); in response to successful reading of the RTC time, restoring the system clock of the MCU based on the read RTC time; or, in response to failure to read the RTC time, obtaining a status switching compensation time and a system time of the MCU, and restoring the system clock of the MCU according to the status switching compensation time and the system time, so that the system clock of the MCU can be restored quickly and accurately, improving the time restoration efficiency of the system clock of the MCU and improving the efficiency of the timing system.

The present invention provides a mobile atomic clock timekeeping method and device, which adds a timekeeping method strategy when the timekeeping system switches from a static state to a mobile state or from a mobile state to a static state. When the timekeeping system is in a mobile state, a cesium atomic clock is selected as the main clock. When the timekeeping system switches from a mobile state to a static state, the main clock is determined according to the performance of a hydrogen atomic clock, thereby reducing the possibility of the performance of the timekeeping system being deteriorated due to the deterioration of the stability of the hydrogen atomic clock during the movement. Compared with the prior art, the timekeeping method proposed by the present invention is applicable to a mobile timekeeping system, which solves the problem that the existing atomic clock timekeeping method is not applicable to a mobile timekeeping system. An initial operation atomic time scale calculation method using a cesium atomic clock as the main clock is added when the timekeeping system is initially operated. The cesium atomic clock is selected as the main clock, and then the 5-7 hours atomic clock time difference comparison data is used to predict the main clock rate and drive it, thereby outputting a stable time frequency signal.

The utility model provides a novel chain guide plate, and belongs to the technical field of timing systems. The problems that an existing chain guide plate is prone to heating due to friction with a chain, and the heat dissipation effect of the guide plate is poor are solved. The novel chain guide plate comprises a guide plate body and a connecting plate installed on the guide plate body, a plurality of heat dissipation grooves are formed in the guide plate body, the heat dissipation grooves are of a long-strip-shaped structure, folding lugs for limiting the connecting plate are arranged at the two ends of the guide plate body, and a plurality of reinforcing structures are arranged in the heat dissipation grooves. The reinforcing structures are sequentially distributed in the longitudinal forming direction of the heat dissipation groove, and each reinforcing structure is composed of a reinforcing disc with a center hole and a supporting rod which is of a cross-shaped structure and enables the reinforcing disc to be connected to the groove wall of the heat dissipation groove. The LED lamp has the advantages of being good in heat dissipation effect and high in overall supporting performance.

A method for performing in a positioning, navigation, tracking, frequency-measuring, or timing system is provided. The method comprises: providing first and second estimates of at least one system parameter during a first time period, wherein the at least one system parameter has a true value and / or true evolution over time during the first time period; providing a local signal; receiving, at a receiver, a signal from a remote source; providing a correlation signal by correlating the local signal with the received signal; providing amplitude and / or phase compensation of at least one of the local signal, the received signal and the correlation signal based on each of the first and second estimates so as to provide first and second amplitude-compensated and / or phase-compensated correlation signals corresponding to the first and second estimates of the at least one system parameter during the first time period, and; determining which of the first and second estimates is nearer the true value and / or true evolution over time of the at least one system parameter during the first time period, based on a comparison between the first and second amplitude-compensated and / or phase-compensated correlation signals. A computer readable medium and system are also disclosed.

1. The name of the design product: timing guide rail (1). 2. The use of the design product: the design product is used for engine timing system. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.