229results about "Setting time indication" patented technology

The invention relates to the technical field of electronic timer calibration, in particular to an ammeter clock intelligent calibration method and system based on multi-modal fusion, and the method comprises the steps: firstly obtaining ammeter clock voltage and environment data, carrying out the preprocessing, and generating an instantaneous disturbance sequence and a steady-state voltage time sequence; respectively calculating a voltage chronic influence factor, a voltage acute influence factor and an environment acceleration factor; determining the influence coefficient of each factor through historical data regression of similar ammeters, carrying out fusion calculation on total life loss, and carrying out iteration to generate a dynamic correction period adaptive to individual damage; and finally, constructing a same-batch and same-environment electric meter reference group, screening similar clusters through clustering, comparing corrected time consistency, judging unconventional abnormity, and outputting a targeted calibration strategy. According to the method, the multi-dimensional error factors are quantified through multi-modal fusion, the differentiation model is constructed, the dynamic correction period is generated through iteration, the traditional fixed period calibration defect is overcome, and the long-term timing precision stability of the electric meter is improved.

The invention provides an electric energy meter clock error calibration system and calibration method. The method comprises the steps of presetting a control time table of a high and low temperature box and at least two automatic trimming schemes; the upper computer adjusts the temperature of the high-low temperature box according to the control time table; switching the connected meter numbers through a clock signal relay, obtaining a daily timing error message of each meter number in each round of test, and analyzing to obtain PPM and S / D data; carrying out mean value calculation on all PPM and all S / D data obtained by each meter number in each round of test, and obtaining a clock error value comprising a PPM mean value and an S / D mean value; after each round of test is finished, according to a clock error value corresponding to the meter number, assembling to obtain an RTC trimming frame according to the selected automatic trimming scheme, and sending the RTC trimming frame; and verifying an RTC trimming result. According to the invention, full-automatic test trimming can be realized, and the efficiency and precision of test and calibration are significantly improved.

The invention relates to the technical field of power systems, in particular to an intelligent substation relay protection secondary circuit verification device. A time synchronization signal in the intelligent substation is received through the time synchronization time synchronization module, after a local clock is calibrated, synchronous connection between the verification device and external time is disconnected, the time of the device is maintained to be stable through the time synchronization high-precision time keeping module, and when a time synchronization signal interface is lacked, the time synchronization signal is provided through the time synchronization time service module; the switching value acquisition and recording module records signal changes of an intelligent terminal device and a primary device mechanism action contact, the detection devices establish data connection with the relay protection tester through the tester communication interaction module and perform communication interaction, and a communication network of the multiple detection devices and the relay protection tester is constructed. By simplifying the verification process and improving the test reliability, a more efficient solution is provided for the power industry, and safe operation and management of the intelligent substation are promoted.

The invention provides a clock adjusting method, a clock and electronic equipment, and the method comprises the steps: monitoring an actual value of spectrum data of a target clock; calculating an expected value of the wave spectrum data according to the transmitting power of a target clock corresponding to the actual value on the basis of a predetermined current relationship between the wave spectrum data and the transmitting power; based on the actual value and the expected value, whether deviation exists in the spectrum data of the target clock is judged; if the deviation exists, updating the relationship between the wave spectrum data and the transmitting power based on the actual value of the wave spectrum data and the transmitting power corresponding to the actual value, and obtaining the current relationship between the updated wave spectrum data and the transmitting power; and adjusting the transmitting power of the target clock based on the current relationship between the updated spectrum data and the transmitting power. Through the method, the stability of the clock can be improved.

The invention discloses a time service module and electronic equipment. The time service module comprises a programmable logic module, a main control module and a crystal oscillator module; the programmable logic module is connected with the crystal oscillator module, the crystal oscillator module outputs a clock frequency signal, and the programmable logic module outputs a first pulse signal according to the clock frequency signal; the programmable logic module comprises a source end logic gate unit, an output end logic gate unit and a counting unit, the source end logic gate unit is connected with a source pulse signal, the output end logic gate unit is connected with a first pulse signal, and the counting unit is connected with the source end logic gate unit and the output end logic gate unit; the counting unit outputs a first data signal according to the number of the switched-on logic gates in the source end logic gate unit and the number of the switched-on logic gates in the output end logic gate unit; the master control module calculates the phase difference between the first pulse signal and the source pulse signal according to the first data signal. The time service module provided by the invention has relatively high locking precision.

The invention discloses a clock calibration system and method, and relates to the technical field of clock calibration. According to the clock calibration method, the clock parameter display time and the real-time display time are obtained in real time for error analysis, if the error exceeds a preset threshold value, historical operation, external environment and interference time sequence data are obtained, correction analysis is carried out to obtain a correction coefficient set, and the display time is calibrated based on the correction coefficient at the next time point. According to the method, the accuracy and comprehensiveness of calibration are greatly improved by comprehensively analyzing the historical operation time sequence data, the external environment time sequence data and the external interference time sequence data; particularly, by calculating an internal circuit correction index, a frequency drift correction index, an environment correction index and an interference correction index, the influence of dynamic factors on the clock time precision in a complex environment can be effectively compensated, and the problems of error accumulation and insufficient correction possibly caused by a single correction model are avoided.

[Problem] To provide a time synchronization mechanism that is not affected by link asymmetry between time synchronization devices.[Solution] A DC 4 used in a time transmission system that transmits and receives a PTP packet between a master node 1 and a slave node 2 via the DC 4 and synchronizes time of the slave node 2 based on time information on the transmission and reception includes a PTP clock unit 12 that synchronizes time information by the arrived PTP packet, a frequency clock unit 21 that synchronizes time information by a frequency signal, a delay setting unit 22 that sets, such that a transmission delay of the PTP packet between the master node 1 and the slave node 2 becomes a setting delay Lmax, a waiting time of the PTP packet based on a time difference between a departure time of the PTP packet and an arrival time of the PTP packet at the DC 4, which is determined from the time information of the frequency clock unit 21, and a time adjustment unit 26 that corrects a time shift from reference time in the time information of the frequency clock unit 21 based on the time information of the PTP clock unit 12.

The invention relates to the technical field of traffic signal lamps, and discloses a mobile traffic signal lamp with an intelligent network connection function, which comprises a traffic signal lamp module and a control system which are mutually connected, and is characterized in that the traffic signal lamp module comprises a traffic signal lamp body, a camera, a solar charging panel and a storage battery; the camera and the solar charging panel are installed on the traffic signal lamp body, and the storage battery is installed in the traffic signal lamp body. The control system comprises a signal control machine, a channel driver, a cloud platform and a charging controller, the signal control machine is connected with the cloud platform and the channel driver, the channel driver is connected with the traffic signal lamp body, the charging controller is connected with the solar charging panel and the storage battery, and the charging controller is used for controlling the solar charging panel to charge the storage battery. According to the invention, through the intelligent network connection technology, remote monitoring and control of the traffic signal lamp module are realized, and the efficiency and flexibility of traffic management are improved.

The invention relates to a local clock calibration method and a time synchronization signal channel expansion system, a timed device receives a PPS signal transmitted by a channel expansion device, and the method comprises the following steps: based on a received PPS output signal, measuring and determining a period deviation y of a local clock of the timed device relative to a standard time; dynamically generating a correction step z and a correction interval b based on the period deviation y according to an allowable error threshold value Q; and in the next time service period, taking the calibration time interval b as a period, and utilizing the calibration step z to carry out multiple times of incremental adjustment on a local calibratable time counter, so that the timing of the local calibratable time counter is close to the standard time. According to the invention, the problem of one-to-many signal distribution can be solved with low cost and high reliability, and a time service algorithm which is low in calculation overhead and easy to transplant and deploy on MCUs with various performance levels can be realized.

The invention relates to the technical field of watch calibration, in particular to a watch accurate timing error calibration method and system. By monitoring a plurality of temperature data in the operation state and calculating the average temperature, the system can dynamically correct the influence of the temperature on the frequency according to the temperature compensation coefficient, the precision error caused by temperature change is avoided, and the accuracy of the system is improved by collecting the acceleration data and calculating the acceleration influence coefficient. The watch can dynamically adjust the influence of motion on timing errors and keep accurate time, and can monitor and correct the time errors in real time through built-in sensors such as the swing fluctuation rate of the balance wheel and the angular velocity of the gyroscope, so that the watch can dynamically adjust time calibration according to environment changes and motion states, and the accuracy of timing is improved. According to the technical scheme, the timing error of the watch can be compensated and calibrated more comprehensively instead of depending on a GPS signal, and the calibration mode enables the watch to be adjusted carefully according to the running state of the watch and the environment change, so that the overall accuracy of the watch is improved.

The invention discloses a dynamic master clock selection method based on Kalman filtering and Bayesian estimation, which is applied to the technical field of master clock selection, and comprises the following steps: constructing a virtual clock by calculating observation equations of a plurality of atomic clocks; performing state estimation on the atomic clocks by using a Kalman filtering method to obtain state estimation values of the atomic clocks; the state estimation value of each atomic clock comprises the phase and frequency estimation value of the atomic clock; the phase of each atomic clock is the phase deviation of the atomic clock relative to the virtual clock, and the frequency estimation value is the frequency estimation value of the atomic clock relative to the virtual clock; calculating the short-term frequency stability and the long-term frequency drift rate of the atomic clock based on the state estimation value of each atomic clock, and defining the comprehensive performance index of the atomic clock based on the short-term frequency stability and the long-term frequency drift rate; and calculating the posterior probability of each atomic clock based on the comprehensive performance index of each atomic clock and the current observation data by using a Bayesian estimation method so as to perform high-flexibility and high-reliability main clock selection.

The invention is suitable for the technical field of intelligent electric energy meters, and relates to an electric energy meter clock calibration system and method, and the system comprises an external clock module which is used for transmitting a second pulse signal to a microcontroller; the built-in clock module is used for providing real-time clock and calendar functions and automatic leap year adjustment, supporting an alarm clock and a periodic terminal, and realizing a built-in hard clock through an external crystal; the internal soft clock module is used for periodically triggering a timer terminal and synchronizing pulse per second of an external clock after accumulating a certain number of times; and the internal and external clock automatic switching module is used for switching to the internal clock module when the external clock module breaks down and synchronizing the internal soft clock module so as to ensure the accuracy of the clock. The electric energy meter clock is simple in structure and convenient to operate, and the accuracy and reliability of operation of the electric energy meter clock are effectively improved.

The invention provides a time calibration method, system and device of a voice controller. According to the embodiment, the trigger signals are continuously sent to the traffic signal lamp for N times through the connecting channel of the traffic signal lamp associated with the signal machine and the voice controller, so that the voice controller can calibrate the time of the local clock after sensing the continuous N times of trigger signals, time calibration of the clock in the voice controller can be automatically realized, and the time calibration efficiency is improved. According to the method, the time error of the clock in the voice controller can be controlled within 1 minute.

A method, device, computer equipment and storage medium for GNSS time synchronization are disclosed. The method includes: receiving data packet of NMEA protocol, reading a valid UTC time from data packet of NMEA protocol, and storing the read valid UTC time in a time synchronization controller; receiving PPS signal, capturing a local time output by local clock when PPS signal is generated, and storing the local time in the time synchronization controller; reading a last local time stored before the current local time and reading the stored latest UTC time as a UTC time corresponding to the last local time when the time synchronization controller receives the current local time; and determining, by the time synchronization controller, a local time correction amount according to the last local time and the UTC time corresponding to the last local time, and correcting the local clock according to the local time correction amount.

The present invention provides a communication method that uses a cryptographic key and that is capable of performing time synchronization with high accuracy and preventing tampering.　In the communication method, a terminal (3) at an exchange, a plurality of relay stations (9a, 9b, 9c), and a terminal (11) of a transactor receive a cryptographic key (7d) from a space-time standard station (5), the plurality of relay stations (9a, 9b, 9c) transmit encrypted relay station information to the terminal (11) of the transactor, the terminal (11) of the transactor transmits, to a selected relay station (9a), transaction information to which the encrypted relay station information has been added, the selected relay station (9a) transmits, to the terminal (3) at the exchange, the transaction information to which reception time has been added, and, when time information at the standard time is within a predetermined delay time, the terminal (3) at the exchange receives the transaction information included in the transaction information to which the relay station information has been added.

In one example, the method includes determining, by a vehicle UE, whether a global navigation system (GNSS) receiver of the vehicle receives a GNSS signal including time information for time synchronization operation for a local clock source of the vehicle, adjusting a local clock time of the local clock source of the vehicle based on the time information included in the GNSS signal or one of one or more wireless signals broadcast from a base station based on whether the GNSS receiver receives the GNSS signal including the time information, and adjusting at least one of a phase or a frequency of a clock signal provided to the C-V2X wireless interface based on the adjusted local clock time.

The model learning unit (401) performs a learning process for estimating the time of the base host based on the time synchronization information of the sub-base host. The inference unit (402) estimates the time of the base host based on the time synchronization information of the sub-base host using the learned model obtained by the learning process. The synchronization control unit (204) performs time synchronization according to the acquired time when the time is obtained from the base host, and performs time synchronization according to the time estimated by the inference unit (402) when the time is not obtained from the base host.

An electronic watch includes memory that stores a reference time and a time difference relative to the reference time, a timekeeper that clocks the reference time, a time display unit that includes an hour hand displaying a display time based on the reference time and the time difference, a calendar display unit that displays a date based on the reference time and the time difference, an operation device that includes a crown or a button, and a controller that, in a set time-difference setting range, corrects the time difference at a regular interval for each of operations of the operation device, and updates the hour hand and the date in accordance with the corrected time difference.

Provided is a wireless time servicing method, device and system. The wireless time servicing method includes: obtaining absolute time information sent by an external clock source; correcting a system time of a master station according to the absolute time information; broadcasting path information to a slave station; receiving feedback from the slave station in response to the path information, calculating a transmission path delay between the master station and the slave station, and storing the transmission path delay in the time information; and sending the time information to the slave station.

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 application provides an electronic watch running time precision regulation system, and relates to the technical field of data processing.The system is used for collecting temperature values, voltage values and cumulative running time, counting the number of pulses output by a crystal oscillator in a unit time, obtaining state data and basic frequency data, calculating frequency offset values in different periods, performing window sliding, calculating drift trend values in different windows, calculating the difference between different states between adjacent periods, obtaining state change values, combining and analyzing the state change values with a frequency drift trend sequence, obtaining a state response coefficient set, identifying effective disturbance components in state change vectors of different periods, calculating pulse compensation values in different periods, obtaining pulse compensation data, correcting timing pulses, obtaining a pulse output sequence, and updating the time of the electronic watch according to the pulse output sequence.The application can regulate the pulse signal of the electronic watch and ensure the precision of running time.

The present invention provides a calibration method for an RTC clock based on a low-speed internal clock source, comprising: determining the calibration position of the RTC clock and obtaining the current temperature; initializing and setting a timer, and starting an electronic timer for counting; performing difference analysis on the current temperature and the historical temperature, judging whether the temperature difference is greater than a first threshold, and setting the time for the initialized timer when the temperature difference is greater than the first threshold, and combining the timer and the electronic counter to update and record RTC interrupt data and LSI frequency division marks; when the RTC interrupt record data is greater than a second threshold, performing frequency division ratio estimation, and correcting the original frequency division of the RTC clock according to the estimated frequency division ratio of the RTC clock combined with the LSI frequency division mark, and performing RTC clock error analysis at the same time. The present invention combines timer counting to calibrate the RTC low-speed clock source, improves the calibration accuracy of the LSI over the full temperature range, and thus improves the accuracy of the RTC clock.

The invention relates to an intelligent wearable device time synchronization processing method, device, equipment, medium and system, and belongs to the technical field of intelligent wearable devices. The intelligent wearable device time synchronization processing method comprises the following steps: acquiring accelerations of a plurality of intelligent wearable devices; after the acceleration of any two intelligent wearable devices exceeds a preset threshold value, recording first data collected by the multiple intelligent wearable devices; the first data comprises acceleration data, angular velocity data and air pressure data; and according to the first data, performing time synchronization processing on clocks of the plurality of intelligent wearable devices. According to the technical scheme, the time synchronization accuracy and reliability can be improved, and hardware does not need to be added.

To provide a radio clock repeater that can be attached in position by a single hand without losing components.SOLUTION: A radio clock repeater comprises: a slave unit body 21 that outputs a pseudo-standard radio wave; a slave unit casing 12 in which the slave unit body 21 is housed; a fastener 13 which is provided at the slave unit casing 12 and fastens the slave unit casing 12 to a wall surface fixture F; and a fixture 16D for fixing a radio clock C to the front of the slave unit casing 12. The fastener 13 includes a plate body 14 formed with a wall-hanging hole 14A into which a tip Ft of the wall surface fixture F is inserted, and a lock member 15 which is located below the wall-handing hole 14A and prevents the tip Ft from coming off. The lock member 15 includes a leaf spring member 15A fixed to the plate body 14, and a non-fixing part 15B attached to the leaf spring member 15A and capable of coming close to or separating from the wall-handling hole 14A. The non-fixing part 15B is biased to be in a state of being close to the wall-hanging hole 14A.SELECTED DRAWING: Figure 7

The embodiment of the invention discloses a time calibration method, a time calibration device, time calibration equipment, a time calibration system and a medium for implantable equipment. The method comprises the steps of determining target change information generated when the implantable device executes a charging operation under the condition of detecting that the implantable device executes the charging operation; wherein the target change information comprises first temperature change information and / or first time change information generated when the implantable device executes the charging operation; the first time change information is determined based on the local offline time of the implantable device; determining a target time deviation value which is generated by the implantable device and corresponds to the target change information based on an association relationship between a preset calibration time deviation value and the calibration change information of the implantable device and the target change information; wherein the calibration change information is change information generated in the calibration charging process of the implantable device; and updating the local time of the implantable device based on the target time deviation value.

One or more embodiments of the invention provide a time service device based on a Beidou satellite time service system. The device comprises a power supply module which is used for providing electric energy for a Beidou time service module, a processor module and an encryption module; the Beidou time service receiving module is used for receiving time service information of a Beidou satellite and sending the time service information to the processor module; the processor module is used for preprocessing the time service information and sending the preprocessed time service information to the encryption module; and the encryption module is used for encrypting the preprocessed time service information to obtain encrypted time service information. The satellite data reliability can be improved, and the risk of data leakage is reduced.

Provided are an electric wave correction timepiece, a system, and a control method for the electric wave correction timepiece, which can immediately correct to a local time even in an airport building and can do so without complicated operations. The electric wave correction timepiece is characterized by including a reception unit that receives satellite electric waves containing first time information, a close-range reception unit that receives electric waves containing second time information transmitted from a portable device, an operation unit that accepts an instruction operation, a reception control unit that selectively executes first reception processing that causes the reception unit to operate to acquire the first time information at a preset time, and second reception processing that causes the close-range reception unit to operate to acquire the second time information based on the instruction operation from the operation unit, and a time correction unit that corrects a displayed time based on the first time information acquired in the first reception processing or the second time information acquired in the second reception processing.

A controller includes: a controller clock management unit configured to receive global time data indicating a global time associated with an external global clock, synchronize an internal controller clock of the controller with the global clock based on the global time, and set a controller time based on the synchronized controller clock; and a notification unit configured to transmit controller time data indicating the controller time to at least one local device through periodic communication.

An electronic timepiece includes: a hand; a wheel corresponding to the hand and having a hole; a detector corresponding to the wheel, the detector being configured to detect light that passes through the hole of the wheel in response to voltage being applied to the detector and configured to output current corresponding to an intensity of the detected light; and a processor. The processor obtains, at a predetermined timing, a current-based value that is based on the current output by the detector. The processor determines whether or not the current-based value is greater than or equal to a predetermined threshold. Based on the determination, the processor performs position detection of the hand. The predetermined timing is earlier than a timing at which the current-based value, which is based on the current output by the detector, becomes a value in a steady state.

The embodiment of the present application discloses a RTC device time correction method and system, and relates to the technical field of real-time clock, which comprises the following steps: in response to a time correction request, calling the production environment temperature stored in the RTC device and the corresponding first frequency tolerance under the production environment temperature; obtaining the actual environment temperature at the time of the time correction request; determining the second frequency tolerance corresponding to the RTC device at present according to the actual environment temperature, the production environment temperature and the first frequency tolerance; and correcting the RTC device according to the second frequency tolerance. The embodiment of the present application corrects the RTC device in real time through the stored production environment temperature, the first frequency tolerance and the obtained current actual environment temperature, so as to improve the clock accuracy of the RTC device.