15results about "Setting time indication" patented technology

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.

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.

This enables the detection of unauthorized time manipulation or unintended time changes to the system time that may occur between periodic time synchronization and health check intervals. [Solution] The system includes a system time acquisition unit 11 that repeatedly acquires the system time, which is the current time managed by the OS, and records it in the main memory 102, and an anomaly determination unit 12 that determines an anomaly in the current system time by utilizing the relationship between the most recently acquired current system time and past system times acquired in the past and recorded in the main memory 102. By determining an anomaly in the current system time by utilizing the relationship between system times that are sequentially updated at time intervals shorter than the time intervals for periodic time synchronization and health checks by the timestamp server 1, it is possible to detect unauthorized time manipulation or unintended time changes to the system time that may occur between time synchronization and health check time intervals.

This invention provides an intelligent sensor-driven clock timing accuracy calibration system, relating to the field of data processing technology. It acquires raw temperature sequence data with time stamps and location information by deploying temperature sensing units at different heating locations on the clock timing device; identifies the dominant heating region based on the temperature change rate and duration and generates corresponding weights; analyzes the heat transfer time difference in conjunction with the crystal oscillator installation position to construct a local thermal effect response sequence with time lag; derives the crystal oscillator frequency evolution process based on this response sequence and generates a predicted frequency offset; pre-adjusts the timing pulse before errors occur to form a timing reference signal; and simultaneously corrects the dominant heat source weights and heat transfer delay relationship by comparing with an external standard time source, achieving dynamic calibration of timing accuracy.

To provide a wireless clock system and a method for implementing the wireless clock system that can reduce the effort required for registration between a wireless terminal and a wireless clock. [Solution] The wireless clock comprises a creation unit that creates a first signal including device address registration request identification information that requests the registration of a device address, and a communication control unit that transmits the first signal created by the creation unit. The terminal device comprises a registration unit that registers a device address if it is not already registered, based on the device address registration request identification information included in the first signal transmitted by the wireless clock.

To provide a wireless clock system and a method for the wireless clock system that makes it easy to identify which wireless clock corresponds to a given wireless clock from among multiple wireless clocks. [Solution] The wireless clock comprises a creation unit that creates a first signal containing identification information that instructs the display of individual identification information or a second signal that does not request the registration of wireless clock identification information, and a communication control unit that causes the creation unit to transmit the first signal or the second signal. The terminal device comprises a display control unit that, based on the first signal or the second signal transmitted by each of the multiple wireless clocks, displays the individual identification information of each of the multiple wireless clocks in a way that distinguishes between those that include identification information instructing the display of individual identification information and those that do not.

The application discloses a power grid time frequency real-time correction method and system based on dynamic monitoring, comprising: capturing a continuous timestamp sequence from a power grid node, obtaining a time deviation signal; using an adaptive dispersion compensation algorithm to process the time deviation signal, obtaining a restored time frequency characteristic; through feature comparison, obtaining a parasitic interference index from the restored time frequency characteristic; if the parasitic interference index exceeds a preset interference threshold, processing the restored time frequency characteristic through a parasitic component suppression filter to obtain pure main frequency data; according to the comparison between the pure main frequency data and the time deviation signal, obtaining an adjustment instruction sequence; and according to the adjustment instruction sequence, performing real-time correction on the power grid time frequency. Through the fusion of multi-stage sampling, dispersion compensation and closed-loop control, the application significantly improves the power grid time synchronization accuracy and stability, effectively suppresses parasitic interference, and realizes real-time correction.

An analog electronic timepiece (1), including: a hand (61 to 65) which is provided to be rotatable; and a processor (41) which makes the hand perform at least one of an acceleration operation and a deceleration operation as a speed change operation when the hand is made to perform a fast forward movement, the acceleration operation being an operation of gradually increasing a fast forward speed of the hand from a stopped state when the fast forward movement is started, and the deceleration operation being an operation of gradually decreasing the fast forward speed until the hand comes into the stopped state when the fast forward movement is ended.

This application discloses a bell-ringing system and time synchronization method based on multi-source redundant time synchronization, specifically relating to the field of bell-ringing control technology. The bell-ringing system includes a multi-source access module, an intelligent arbitration switching module, a local high-stability timekeeping module, and a bell-ringing control module. Through a multi-source redundant time synchronization fusion design, it solves the vulnerability of traditional bell-ringing systems relying on a single signal source, achieving the core goal of "service continuity." The intelligent arbitration switching logic and configurable priority strategy enable the system to adapt to different scenario requirements. The local high-stability timekeeping module further improves reliability under extreme conditions. The product layering design can meet the cost and performance needs of different users, significantly enhancing market competitiveness. Simultaneously, the bell-ringing system is integrated with the time and frequency domain to achieve automatic time synchronization without manual calibration, improving the accuracy and intelligence of the bell-ringing process.

The application discloses a clock correction method based on asynchronous communication and an electric energy meter. The correction method is used for correcting the clock error of an internal RC of an MCU. After the internal RC is enabled as a clock source of the MCU, the MCU receives data sent by an external module in an asynchronous communication mode. The external module is internally provided with an independent clock source. The MCU calculates the deviation value of the internal RC according to the time length between the high and low level change characteristics of the received data, and then corrects the internal RC based on the deviation value. The application not only solves the problem that the internal RC cannot be corrected, but also has the advantages of less occupied resources, high correction efficiency, no need of additional energy consumption and the like.

To provide a system that is superior to the conventional system such as the system and the like capable of identifying a time without requiring a manual input of information by users, under a situation where information cannot be directly acquired from any of a time server and a reception unit of a satellite positioning system in the system using a time.SOLUTION: A system 901 comprises: a drive recorder 1 that is mounted to each of a plurality of vehicles; a time recorder 2 that transmits time information to the drive recorder 1; a time server 3 that transmits the time information to the time recorder 2; and a data server 4 that stores variety of information such as attendance information and the like the drive recorder 2 generates. The drive recorder 1 is configured to receive time information indicative of a current time from the time recorder 2 by wireless communication, for example, every time a prescribed tim goes by. The drive recorder 1 includes an internal time piece, and is configured to calibrate a time the internal time piece counts, using the time information received from the time recorder 2.SELECTED DRAWING: Figure 1

This invention discloses a method and system for optimizing offline time calibration accuracy in smartwatches, relating to the field of offline clock calibration technology. The method includes: deploying an offline calibration mode in the smartwatch, employing a combined setup of first-order dual-crystal differential common-mode compensation and second-order temperature gradient feedforward transient compensation. The first-order calibration mode eliminates common-mode temperature drift through differential mixing of the main and auxiliary crystal oscillators, generating a reference signal; the second-order calibration mode utilizes an analog differential architecture to obtain a temperature-voltage gradient signal, which is superimposed on the varactor diode bias terminal to achieve transient compensation. The two modes are combined to complete offline time calibration management. This invention solves the technical problem of timing deviations caused by changes in ambient temperature and actual operating conditions in smartwatches during offline operation, achieving the technical effect of improving the time calibration accuracy of smartwatches in offline mode while ensuring their long-term timing stability.

The application discloses a kind of satellite on-board clock autonomous correction method using lunar occultation observation, utilize observation record and handle the time sequence of stellar occultation phenomenon of moon, correct on-board clock deviation.First, on-board imaging measurement equipment such as star sensor is used to observe the occultation and recurrence phenomenon of moon to specific star, record the time of phenomenon occurrence, form measurement time sequence, then utilize satellite accurate orbit information to combine lunar ephemeris calculation theoretical occultation and recurrence phenomenon time sequence, compare two groups of time sequence, iteratively correct star clock reference, so that actual observation time sequence and theoretical time sequence accurately coincide, to achieve the purpose of star clock reference correction.This method does not need to increase additional new equipment for satellite, only needs to utilize existing common sensitive equipment to complete observation, low in cost, high in system reliability, less on-board resource occupation.

The application discloses a method and system for extracting time-frequency characteristics of interference signals by using clock synchronization of electric energy meters, and relates to the field of data processing. The method comprises the following steps: obtaining a plurality of sampling signal groups of a plurality of electric energy meters in a power distribution area; detecting abnormal triggering under time sequence correlation according to a clock synchronization mechanism to determine a suspected interference event; intercepting a multi-measurement-point signal segment corresponding to the interference event, performing cross-measurement-point event matching and time deviation correction, and obtaining a signal set of the interference event; performing joint time-frequency analysis on the signal set to construct a joint time-frequency feature set; extracting cross-measurement-point propagation characteristics of the interference signal to perform reverse tracing compensation mining to obtain an interference tracing compensation vector; and performing anti-interference reconstruction on the signal set. The application solves the technical problems of low interference recognition accuracy and insufficient traceability in existing electric energy meter interference signal analysis and processing, and achieves the technical effects of improving interference signal recognition accuracy and realizing accurate tracing of interference sources and propagation paths.

The application discloses a calibration system and method for real-time clock calibration of power utilization management equipment, wherein the power utilization management equipment comprises concentrators and electric energy meters in a power utilization information system; a controller in the system is connected with a high-low temperature box, a plurality of first temperature sensors, at least one daily time calibration instrument, an ambient temperature adjusting device, at least one second temperature sensor and a first multi-way selection device; and the controller can provide stable calibration ambient temperature and ambient temperature for the power utilization management equipment and the daily time calibration instrument, effectively ensures the reliability of the calibration process, and provides environmental protection for high-precision calibration of the real-time clock of the power utilization management equipment; by ensuring the stability of the calibration ambient temperature, reliable real-time data can be provided for a compensation curve for time domain segmentation interpolation compensation of the power utilization management equipment, and then the accuracy of the compensation curve for time domain segmentation interpolation compensation can be greatly improved while effectively improving the calibration efficiency of the power utilization management equipment.