8 results about "Standard time" patented technology

The utility model discloses a novel sundial which comprises a sundial disc and a sundial needle, the sundial needle vertically penetrates through the sundial disc, the sundial disc comprises a central disc, a longitude circle and a standard time circle which are sequentially arranged from inside to outside, the central disc is a fixed disc, the disc surface of the central disc is provided with original scales, and the original scales are consistent with scale patterns of a traditional sundial; the longitude circle is rotationally or fixedly arranged relative to the center disc, a plurality of longitude scale values are evenly arranged on the inner side, close to the center disc, of the longitude circle along the circumference, and a plurality of first date scales are unequally arranged on the outer side, close to the standard time circle, of the longitude circle along the circumference. According to the design of the sundial, the traditional true solar hour and the modern standard time are combined, so that the sundial not only can accurately display the true solar hour, but also can synchronously display the standard time, the practicability of the sundial is greatly enhanced, the requirement of modern people on the standard time is met, and the sundial is worthy of popularization and application. And meanwhile, the value of the traditional sundial as a cultural heritage is reserved.

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.

The invention relates to the technical field of satellite time service, in particular to an electric power communication clock verification method, system and device based on Beidou B2b and a medium. A main clock obtains local time according to time zone setting, receives Beidou signals and obtains observation data, broadcast ephemeris and Beidou signal correction information based on the received Beidou signals; extracting a satellite orbit and a clock error correction number based on the Beidou signal correction information, correcting a broadcast ephemeris based on the extracted clock error correction number, obtaining a precise satellite orbit and a clock error, and performing data preprocessing on observation data; constructing an observation equation based on the preprocessed observation data, the precise satellite orbit and the clock error, and obtaining the deviation between the local time of the master clock and the standard time through a parameter estimation method; and based on the obtained deviation between the local time of the master clock and the standard time, the master clock sends the time code to the power system equipment, and the power equipment performs time verification according to the time code, so that the time consistency and the operation stability of the power communication system are improved.

The plurality of edge devices are distributed in a plurality of time zones. The network server includes a storage unit to store operation data, and a data collection control unit connected to a plurality of edge devices via a public communication line and configured to collect the operation data and store the collected operation data in the storage unit. The data collection control unit determines a time to collect the operation data from each of the plurality of edge devices based on a standard time of a time zone where each of the plurality of edge devices is disposed.

The invention provides a high-precision clock synchronization method, and relates to the technical field of clock synchronization, and the method comprises the steps: S1, collecting the historical data of a constant-temperature crystal oscillator; s2, using the constant temperature crystal oscillator data to train a BP neural network to obtain a BP neural network frequency prediction model; s3, the BDS receiver and the GPS receiver are used for receiving the corresponding satellite clock information and resolving the satellite clock information, timestamps of the BDS and the GPS are obtained, and a source clock is determined; s4, determining standard time; s5, when communication interruption occurs in the BDS and the GPS and the constant-temperature crystal oscillator enters a punctuality state, performing frequency adjustment according to the obtained prediction frequency, then converting the virtual prediction timestamp into prediction time, and taking the prediction time as standard time; s6, sending the standard time information to the base station in a message form; and S7, the base station sends the standard clock information to a local device, and the local device performs clock correction synchronization according to the standard time. The method has the beneficial effects that the stability can be improved while the synchronization accuracy is improved.

The application discloses a method for time service by using Beidou II satellite, and time reference is obtained by using the clock of Beidou II navigation satellite, and standard time is kept, so that the time service function is realized. Since the relative frequency stability of the clock loaded on each Beidou II navigation satellite of the Beidou II satellite navigation system is very high, the clock is used to generate high-precision frequency standard, and the time service is performed by using the Beidou II navigation satellite in the sky, and an atomic clock is not needed to generate and keep the standard time. However, the atomic clock is needed to be used as the time reference to generate and keep the standard time in other traditional time service modes. Therefore, the time service mode realized by using the Beidou II navigation satellite is lower in cost and saves hardware resources compared with other traditional time service modes.

To provide a standard time sundial with a sunlight auxiliary function, which does not require correction of time difference due to differences in latitude and longitude or change of shape, can display standard time, and enables time to be confirmed by using auxiliary lighting even when sunlight is reduced or absent. [Solution] The sundial 10a is made from a transparent material and has a translucent time display section 13a. By making it cylindrical or polygonal, the time can be checked from the front of the main body or from the reverse side, which is 180° opposite. Because it can be made hollow, it can also be used as a storage box, pen holder, etc. By tilting the main body of the sundial and making the position of the time display section, which incorporates the curves of the gnomon and analemma, adjustable, it is possible to check standard time regardless of changes in the latitude and longitude of the installation location. By providing a lighting mechanism to illuminate or display the shadow and light point of the gnomon in a way that supplements sunlight, it can be used in areas with shade, cloudy days, at night, or polar night.

This invention discloses an internationalized time-aware recall method based on text time semantic parsing, comprising the following steps: S1. Receiving user input; S2. Complexity classification; S3. Adaptive time semantic extraction: an adaptive time semantic extraction strategy extracts time expressions from natural language text; S4. Time normalization: converting the time expressions into standardized time interval representations; S5. Time zone processing: converting the time interval representation into a timestamp of a standard time zone according to the user's time zone parameters; S6. Time-constrained memory retrieval: performing time-constrained memory retrieval in a vector database based on the time interval representation; S7. Outputting memory results: returning the memory results to the user. This invention supports multiple expression forms such as absolute time, relative time, fuzzy time, and time range, supports multilingual extensions including Chinese, English, and Japanese, supports global time zone conversion, and achieves end-to-end time-aware memory recall, significantly improving user query efficiency and user experience.