36results about "Time pulses" 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 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 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.

The invention relates to a device for controlling a continuous rotation electric machine. A control device (2) for controlling the supply of a continuous rotation electric machine, in particular a direct current type electric machine of a timepiece, is arranged to generate electric pulses with a lower supply voltage to drive the rotor, the number of these electric pulses within each defined time interval being variable, in particular as a function of the load applied to the electric machine. The control device comprises a voltage divider (22A, 22B, 24) arranged to supply said lower supply voltage with a plurality of different values and thus said electric pulses with a variable voltage. A logic circuit (20) is arranged to count the number of electric pulses in successive time periods; to periodically select one voltage value from said plurality of different values as a function of the counted number of electric pulses or of a sequence of counted numbers of electric pulses; and to control the voltage divider so that the voltage divider supplies said lower supply voltage with the selected voltage value after the voltage value has been selected.

Disclosed is a quartz oscillator system comprising: a quartz oscillator comprising a quartz crystal and an oscillator circuit whose frequency is based on a resonant frequency of the quartz crystal; a monitoring module for monitoring an output frequency of the quartz oscillator; a control system external to the quartz oscillator, and configured to compare the output frequency with a setpoint frequency, and apply an adjustment signal to an electronic circuit of the quartz oscillator to adjust a frequency of the quartz oscillator based on the comparison with the reference frequency.

The invention provides an electronic clock travel time precision regulation and control system, and relates to the technical field of data processing, and the system is used for collecting a temperature value, a voltage value and accumulated operation time, counting the number of pulses output by a crystal oscillator in unit time, obtaining state data and basic frequency data, calculating frequency deviation values in different periods, and adjusting the travel time precision of the electronic clock. Performing window sliding, calculating drift trend quantity values in different windows, calculating a difference value of different states between adjacent periods to obtain a state variable quantity, combining the state variable quantity with a frequency drift trend sequence for analysis to obtain a state response coefficient set, and identifying effective disturbance components in state change vectors of different periods; and calculating pulse compensation amounts in different periods to obtain pulse compensation data, correcting the timing pulse to obtain a pulse output sequence, and updating the time of the electronic clock according to the pulse output sequence. According to the invention, the pulse signal of the electronic clock can be regulated and controlled, and accurate travel time is ensured.

The method for estimating the drift over time of a physical operating parameter of a clock for dating seismic data samples associated with a seismic data collection node involves measuring (10) at least one quantity associated with the clock, at predetermined instants or during predetermined time periods, and applying (12), to this quantity, a predetermined non-linear law of variation of this quantity that depends on the values collected during the measurement step (10), so as to obtain an estimation of the drift over time of the physical operating parameter.

The invention relates to an resonator a resonator (1) for generating an electrical signal, in particular for timekeeping in electronic devices, comprising at least two masses (2), a ground (3), and at least one actuator (5, 6) and / or sensor (7) to exchange power and / or information between at least one of the masses (2) and the ground (3) or between the masses (2), wherein at least two of the masses (2) are each individually connected to the ground (3) by one or more flexures (10) to enable the masses (2) to oscillate rotationally relative to the ground (3) and wherein at least two of the masses (2) are interlinked by one or more further flexures (11).

The present invention discloses a time reference processing method, comprising: generating an oscillation signal through a constant temperature crystal oscillator; multiplying the oscillation signal to obtain a first frequency signal, and receiving a second frequency signal from an antenna; constructing a free counter using the first frequency signal to obtain a free count value; obtaining a time error between adjacent pulses of the second frequency signal based on the first frequency signal and the second frequency signal; calculating a time compensation value based on the time error; and accumulating the free count value and the time compensation value to obtain real-time time. The present invention constructs a free counter using the first frequency signal to obtain a free count value, i.e., local time, and calculates a time compensation value based on the time error. The free count value and the time compensation value are then accumulated to achieve full digital time compensation to correct the local time.

The invention discloses a method and system for suppressing non-pulse noise to accurately measure pulse arrival time, and the method comprises the steps: S1, generating pulsar simulation parameters which comprise a rotation period P, a flow density S1250 and a pulse arrival phase delay standard deviation sigma delta p; s2, constructing a pulsar standard contour Q (x), and generating based on a pulse contour type Ptype, a sub-pulse number and a sub-pulse contour shape; s3, simulating multi-epoch observation data, injecting noise, adding phase delay delta p, and generating an average contour q (x); s4, judging a pulse region: positioning a candidate pulse region through baseline identification, and screening a final pulse region according to a contour type; s5, calculating a phase difference delta x between the standard contour and the average contour by using a phase gradient method; and S6, comparing a difference value between the phase difference delta x and the analog phase delay delta p, and verifying whether higher timing accuracy is obtained by removing the noise in the non-pulse region or not. The pulsar timing precision is remarkably improved by reducing noise interference in a non-pulse area, and the pulsar timing method is suitable for a high-precision scientific target.

The present invention discloses a low-power temperature sensor for MEMS clocks, which uses bipolar transistors and MOS tubes as temperature sensing elements and converts the temperature-related analog voltage output by the temperature front-end circuit into a digital output through a Sigma-Delta ADC. D OUT The temperature front-end circuit is designed based on the subthreshold temperature characteristics of MOSFET, avoiding the use of resistor components and effectively reducing the static power consumption of the circuit. In addition, the TDC uses a dynamic bias comparator and a complementary structure T-type switch to further improve energy efficiency. This sensor is used in the MEMS clock temperature compensation module, providing it with high-precision and high-resolution temperature information. The structure is optimized for the power consumption of the temperature sensor, and its small size and low power consumption make it suitable for MEMS clock applications.

A system for adjusting a clock signal may include a timing system that receives a reference timing signal having a reference frequency, a plurality of sensors to generate sensor data, an oscillator to generate a clock signal, and one or more processors. The one or more processors may execute instructions stored in memory to train a machine learning model to predict frequency drift of the clock signal based on the sensor data and frequency drifts between an output frequency of the clock signal and the reference frequency. The sensor data may be utilized as training data, and the frequency drifts may be utilized as target data. The one or more processors may further execute to adjust the clock signal to compensate for frequency drift based on a prediction from the model. Other aspects are also described and claimed.

Disclosed is an aerosol generating device including a real-time clock (RTC) configured to output time information measured from a reference time; a non-volatile memory; and a processor configured to: store the time information in the non-volatile memory when a preset operation is performed, when the RTC is initialized, restore the time information by correcting the reference time based on an initial reference time and an accumulated elapsed time from the initial reference time, and when the preset operation is performed again, store updated time information reflecting an elapsed time from the corrected reference time in the non-volatile memory.

A radio-controlled timepiece includes a first oscillating unit configured to oscillate at a first frequency and output a clock signal, a receiving unit including a second oscillating unit and configured to receive radio waves including time information, frequency of the second oscillating unit being less temperature-dependent than that of the first oscillating unit and the second oscillating unit being configured to oscillate at a second frequency and output a clock signal, a control unit configured to calculate temperature compensation data for the first oscillating unit based on an oscillation frequency of the first oscillating unit obtained using, as a reference, the clock signal output from the second oscillating unit and on the temperature data acquired by a temperature acquiring unit, and a storage unit configured to store the temperature compensation data. The control unit performs temperature compensation for the first oscillating unit based on the temperature compensation data and the temperature data.

To generate a real-time clock (RTC) signal with low power consumption, small size, and low cost while maintaining accuracy.SOLUTION: A ring oscillator 80 outputs a reference clock signal. A table acquisition unit 206 acquires a control value table indicating a correspondence between a time period in which the ring oscillator 80 operates and a frequency division ratio of the reference clock signal. A frequency division unit 103 generates a real-time clock (RTC) signal by varying the frequency division ratio of the reference clock signal for each time period in which the ring oscillator 80 operates according to the control value table. A ring oscillator 90 outputs a measurement clock signal oscillating with higher accuracy than the reference clock signal at the time of executing calibration of the control value table. A frequency measurement unit 102 measures the frequency of the RTC signal on the basis of the measurement clock signal. An update determination unit 207 updates at least part of the frequency division ratios in the control value table when the frequency of the RTC signal exceeds an allowable error.SELECTED DRAWING: Figure 2

The real-time clock device can provide high-precision moments. A real-time clock device (20) includes: an input terminal (TPRF) to which a reference pulse signal (PRF) at a time is input; an oscillation circuit (60) that outputs an oscillation clock signal (CK); a clocking / counting circuit (70) that generates information on an internal time on the basis of the oscillation clock signal (CK); and a processing circuit (40) that performs frequency correction of the oscillation clock signal (CK) and time correction of the internal time on the basis of the time deviation amount and the time interval of the time deviation when it is determined that a time deviation has occurred in the internal time when the reference pulse signal (PRF) is input.

The invention discloses a pulsar time measurement method using a multi-component template and a least square method, and the method comprises the following steps: S1, specifying a pulsar P, obtaining the average pulse contour of N times of radio observation of the pulsar P, each average pulse contour containing K data points; s2, assuming that M linearly independent pulse components exist in the pulse profile, each pulse component contains S peaks, and each peak has three parameters of position, intensity and width, and fitting to obtain a standard pulse profile of each pulse component; s3, fitting an average pulse profile obtained by observation of the pulsar by using the standard pulse profile of each pulse component to obtain a linear coefficient and a phase difference of the pulse components; and S4, calculating the pulse arrival time corresponding to the specific average pulse contour by using the phase difference. According to the invention, the effect of the least square method on the aspect of multi-parameter fitting is utilized, and the calculated amount and error of measuring the pulse arrival time by using the multi-component standard pulse profile are reduced.

The invention relates to the technical field of intelligent sensing, and provides a watch movement accurate operation system based on intelligent sensing and self-adaptive control, which comprises a multi-mode sensor module used for collecting environmental parameters, movement states and geographic position data; the data processing module is connected with the sensor module and generates a regulation and control instruction through multi-source data fusion; the self-adaptive regulation and control module is connected with the data processing module and is used for dynamically adjusting movement operation parameters and time zone offset; the power management unit is used for switching power supply modes according to load requirements; and the wireless communication module supports data interaction with a time service server and external equipment. Through fusion of temperature, vibration and magnetic field data, nonlinear errors caused by superposition of high temperature and vibration are solved, mechanical wear is reduced in combination with a progressive adjustment algorithm, daily errors caused by magnetic field interference are compressed from + / -8 seconds to + / -0.3 seconds, and the time precision can still be maintained to be smaller than or equal to + / -0.1 seconds per day in a ground-network-free area (such as an ocean vessel).

To provide an electronic watch that can improve the accuracy of time.SOLUTION: An electronic watch 100 comprises: an oscillator 200; a clock output unit 20 that generates a clock signal; a temperature measurement unit 30a that intermittently measures the peripheral temperature of the oscillator, and performs output according to the measured temperature for every measurement; a storage unit 40 that stores a first storage value corresponding to the measured temperature as time-series data; and a control unit 50 having a clocking unit 51 that clocks time on the basis of the clock signal, an estimation unit 52 that estimates the oscillatory frequency of the oscillator in a section SC of the time-series data of the first storage value stored in the storage unit or a change in the peripheral temperature on the basis of the time-series data of the first storage value, and a first correction unit 53a that, on the basis of either one of the oscillatory frequency of the oscillator or the change in the peripheral temperature estimated in the section, calculates a first time correction amount that is a correction amount for correcting a time error occurring in the section, and performs time correction on the basis of the first time correction amount.SELECTED DRAWING: Figure 2

The vehicle light detection and ranging (LIDAR) system includes a transmitter, a receiver, one or more scanning optics, and an optical module. The transmitter is configured to output a transmit beam. The receiver includes a first receive grating coupler and a second receive grating coupler. The optical module is configured to receive the transmit beam and provide the transmit beam to the one or more scanning optics, receive a return beam from reflection of the transmit beam by an object, split the return beam into at least a first component and a second component, and direct the first component to the first receive grating coupler and the second component to the second receive grating coupler.

To realize time synchronization with a simple system configuration.SOLUTION: A real-time clock device 20 having a first mode and a second mode includes: an input terminal TPRF to which a reference pulse signal PRF of a time is input; an output terminal TPSY that outputs a synchronization pulse signal PSY of the time; an oscillation circuit 60 that outputs an oscillation clock signal CK; a clock count circuit 70 that generates information on an internal time on the basis of the oscillation clock signal CK; and a processing circuit 40 that performs time correction of the internal time on the basis of the reference pulse signal PRF input from the input terminal TPRF and causes the output terminal TPSY to output the synchronization pulse signal PSY generated based on the information on the internal time in the first mode, and performs the time correction of the internal time on the basis of the reference pulse signal PRF input from the input terminal TPRF in the second mode.SELECTED DRAWING: Figure 1

The present invention provides a timing method based on a FLASH chip. The method utilizes the principle that the logic level of the storage unit in the FLASH chip is irreversible, that is, the logic "0" in the chip can only be converted to a logic "1" by erasing. The storage unit of the FLASH chip is erased once when the power is turned on. Subsequently, each bit in the FLASH storage unit is used as a counting scale for the minimum time interval during timing, and logic "0" is written in sequence. By counting the number of logic "0"s in the storage chip, the total timing time can be obtained, and the erasing operation is avoided, effectively extending the service life of the chip. The timing method is simple and effective, does not require the configuration of a dedicated display, and effectively reduces project costs. The present invention also provides a timing device based on a FLASH chip and a computer-readable storage medium.

Provided are a glass composition and a sealing material that can be sealed at low temperature while having good weather resistance. The glass composition of the present invention is characterized by containing, in mol%, TeO2 15-80%, MoO3+Ag2O 0.1-30%, V2O5 5-40%, CuO 0.1-35%, Pb0 0-10%.

To provide a time maintaining device that can accurately maintain system time at low cost.SOLUTION: System time generation means generates the time in synchronization with period information generated by an atomic clock as system time. Time information processing means outputs time difference information indicating the difference between the system time and reference time that is the time to be a reference value. Time change function calculation means calculates an approximate function indicating a change in the difference with respect to time on the basis of the time difference information in a predetermined period. Drift adjustment parameter calculation means calculates the value of a drift adjustment parameter by using the approximate function and the drift adjustment parameter before the update of the atomic clock.SELECTED DRAWING: Figure 4

Clock frequency monitoring circuit (200) which features: at least one temperature-related data source configured to provide temperature-related data associated with an electronic arrangement (202), which data includes a measured temperature; a clock generator (210) which has an operating frequency; a frequency monitoring system (414) configured to: to store a large number of clock frequency limits corresponding to a large number of different temperatures; at least on the basis of the measured temperature, to select one of the stored clock frequency limits that is assigned to the electronic arrangement (202); to determine the operating frequency of the clock generator (210); to compare the specified operating frequency of the clock generator (210) with the selected clock frequency limit; and if the operating frequency of the clock generator (210) exceeds the selected clock frequency limit, to generate a digital correction signal, wherein the corrective action signal serves to trigger a corrective action associated with the electronic arrangement (202) or a related arrangement, wherein generating the corrective action signal includes generating an interrupt signal for controlling a program application.

The invention relates to a timepiece (100), in particular a wristwatch, comprising an electro-optical converter device (1) with at least one electro-optical converter (10; 11, 12), an opto-electrical converter device (2), a first signal path (3) leading into the opto-electrical converter device (2) via a first waveguide (61), a second signal path (4) leading into the opto-electrical converter device (2) either directly or via a second waveguide (62), a control device (5) and a useful signal generating device (103). The first signal path (3) and the second signal path (4) are designed such that the propagation time of the first optical clock signal in the first signal path (3) and the propagation time of the second optical clock signal in the second signal path (4) are different from each other.

The present application relates to the technical field of electronic timer calibration, and particularly relates to a kind of electric meter clock intelligent calibration method and system based on multi-modal fusion, method includes: the present application obtains electric meter clock voltage and environmental data first, pre-processing generates transient disturbance sequence and steady voltage time sequence, then according to this respectively calculate voltage chronic influence factor, voltage acute influence factor and environmental acceleration factor;By the regression of the same kind electric meter historical data to determine the influence coefficient of each factor, the total life loss is fused and calculated, and the dynamic correction period of adaptive individual damage is iteratively generated;Finally, a reference group of the same batch and the same environment electric meter is constructed, similar clusters are screened by clustering, and the time consistency after correction is compared to determine the unconventional anomaly and output the targeted calibration strategy.The present application quantifies multi-dimensional error factors by multi-modal fusion, constructs a differentiated model and iteratively generates a dynamic correction period, solves the defects of traditional fixed cycle calibration, and improves the long-term timing accuracy and stability of electric meter.

The invention discloses a data acquisition time synchronization method and system for a single-photon laser radar. The method comprises the following steps: constructing a high-order counter and a low-order interpolator in a field programmable gate array based on a high-stability constant-temperature crystal oscillator to jointly generate a system timestamp; a reference timestamp is generated when the laser dominant wave and echo signal input passes through the time-to-digital conversion module; recording a system timestamp in the whole process of requesting and returning peripheral data, and synchronously acquiring communication delay and an environment state; a delay compensation and edge prediction mechanism is introduced into time synchronization logic, and peripheral time is mapped to a laser reference time system to be fused with ranging data; when a second pulse signal generated by a GNSS is received, a drift model is established for periodic calibration, and when the signal fails, a historical drift model is automatically called for compensation. According to the invention, the acquisition time of the multi-source heterogeneous data in the single-photon laser radar can be synchronously aligned to a unified time axis, and a unified time reference is provided for subsequent processing.

To provide a real-time clock module capable of reducing power consumption of a memory device that writes time data.SOLUTION: A real-time clock module connected to a memory device is provided with: a clock circuit that performs time measurement and generates time data; a first interface circuit that functions as a master interface for the memory device; a power supply circuit that supplies a power supply voltage to the memory device; and a control circuit that writes target time data corresponding to at least some time digits of the time data in the memory device through the first interface after starting the supply of the power supply voltage to the memory device, and stops supplying the power supply voltage after writing the target time data.SELECTED DRAWING: Figure 2