20results about "Preselected time interval producing apparatus" patented technology

The invention discloses a comprehensive pulsar time determination method and device based on time-frequency combination and dynamic weighted fusion, and relates to the field of comprehensive pulsar time calculation. The method comprises the following steps: acquiring a timing residual sequence of each pulsar; the timing residual sequence is determined based on timing residuals collected at set sampling intervals; the timing residual error is the difference value between the actual arrival time and the preset arrival time of the pulsar pulse; carrying out adaptive wavelet packet decomposition and empirical mode decomposition on the timing residual sequence of each pulsar, and carrying out time-frequency combined filtering processing to obtain a processing signal; and performing fusion processing according to the processed signal by adopting a dynamic weighted fusion algorithm to obtain comprehensive pulsar time. According to the invention, dynamic fusion is realized, the noise suppression precision is improved, and the anti-interference capability is improved.

The invention discloses a blind separation and time-frequency noise reduction combined comprehensive pulsar time establishing method. The method comprises the following steps: selecting a pulsar meeting a preset requirement; processing the timing residual error of the selected pulsar; establishing a mixed signal model, iteratively solving an anti-mixing matrix through an approximate negentropy contrast function, and separating independent components from the multi-dimensional features; carrying out Pearson correlation analysis on each separated independent component and reference time; and performing multi-scale decomposition on the selected common-mode clock difference signal by adopting a plurality of wavelet bases, and performing Bayesian soft threshold processing to obtain the final comprehensive pulsar time. According to the method, the long-term stability of the comprehensive pulsar is improved, the common problems of aliasing and modal mixing in a high-noise environment in the prior art are solved, and the extracted signal is more stable.

An in-ear monitor system has earpieces with haptic metronome actuators. Synchronized metronome vibration pulses, which pose no audible interference to audio monitoring, stimulate the user's ear and or ear canal. A sound engineer or technician from a control console selects or programs the synchronized metronome timing sequence and the sequence is multicast to one or more receiver body packs worn by the performer in the group. The timing sequence can alternatively be selected in response to audio commands spoken by a user wearing the in-ear monitor, or can be based on a beat sensor.

An atomic object confined in a particular region of an atomic object confinement device is cooled using an EIT cooling operation from S to P to D. A controller associated with the atomic object confinement device controls a first steering source and a second steering source to provide a first steering signal and a second steering signal, respectively, to the particular region. The first steering signal is characterized by a first wavelength corresponding to a transition between an S manifold and a P manifold of a first component of the atomic object, and the S to P transition is detuned by a first detuning amount. The second steering signal is characterized by a second wavelength corresponding to a transition between the P manifold and a D manifold of the first component, and the P to D transition is detuned by a second detuning amount. The first detuning amount and the second detuning amount are selected to establish a dark state associated with a two-photon transition between the S manifold and the D manifold.

To provide a piezoelectric resonator which can resist high electromagnetic fields while keeping the energy consumption and volume reduced.SOLUTION: A piezoelectric resonator, in particular for a rotary piezoelectric motor, includes a stationary base 3 and an oscillating mass 2 extending about a longitudinal axis. The oscillating mass is provided with at least one inertia-block 4, preferably two opposing inertia-blocks. The piezoelectric resonator includes a flexible blade guide connecting the oscillating mass to the base, so that the oscillating mass can be oscillated about a center of rotation in a pendulum movement. The flexible blade guide includes: a first flexible blade 6 connected to the base and / or to the oscillating mass to allow the displacement of the oscillating mass relative to the base; and a spiral spring 5 connected to the base and / or to the oscillating mass. The spiral spring includes at least partially an electrically actuatable piezoelectric material to thereby deform the spiral spring and oscillate the oscillating mass.SELECTED DRAWING: Figure 1

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 invention discloses an all-solid-state timestamp marking device. The all-solid-state timestamp marking device comprises a pulse laser generating module, a multi-stage coupling delay module and an output shaping module. According to the device, a pulse laser signal is transmitted through an all-solid-state medium, and high-precision time sequence delay output is realized while the transmission loss is reduced by utilizing a gradient splitting ratio design and a solid-state waveguide coupling structure. The end face micro-lens group focuses and shapes the output signal, so that glare interference can be effectively inhibited, and the spot size can be controlled. The invention has the characteristics of high safety, strong environmental adaptability, high utilization rate of consumables, excellent signal output quality and the like, and solves the problems in the aspects of laser transmission safety, system stability and manufacturing cost in the prior art.

This invention relates to the field of pulsar timing technology, and more particularly to a comprehensive pulsar timing analysis method and system based on iterative filtering. The method includes combining the timing residuals of pulsars in pairs according to combination rules to form multiple master-slave groups of pulsar timing residuals, and iteratively filtering them using the Vondrak-Cepek filtering algorithm to obtain the corresponding filtered timing residuals. After each round of iterative filtering, the filtered timing residuals output from the previous round of iterative filtering are combined in pairs according to combination rules to obtain updated master-slave groups of pulsar timing residuals, which are then used as input for the next round of iterative filtering, until the total number of filtering iterations is reached, thereby obtaining the comprehensive pulsar timing stability. Compared to a single pulsar, this invention, through multiple rounds of iterative Vondrak-Cepek filtering, establishes a comprehensive pulsar timing for selected millisecond pulsars, which can simultaneously improve both short-term and long-term stability.

To provide a piezoelectric resonator capable of withstanding a high electromagnetic field while maintaining low power consumption and volume.SOLUTION: The present invention relates to a piezoelectric resonator 1 for a rotary piezoelectric motor. The resonator comprises a fixed base 3, and an oscillating weight 2 extending around a longitudinal axis. The oscillating weight has an inertial block 4, preferably two opposite inertial blocks. The piezoelectric resonator comprises a flexible blade guide connecting the oscillating weight to the base, and can oscillate the oscillating weight around a rotation center in a pendulum motion manner. The flexible blade guide comprises: a first flexible blade 6 connected to the base and / or the oscillating weight, and allows the oscillating weight to be displaced relative to the base; and a helical spring 5 connected to the base and / or the oscillating weight. The helical spring comprises, at least in part, an electrically actuatable piezoelectric material, which deforms the helical spring and causes the oscillating weight to oscillate.SELECTED DRAWING: Figure 1

To solve the problem in impossibility of further improving the stability of an oscillation frequency.SOLUTION: An atomic oscillator includes: a gas cell in which an alkali metal atom is sealed; a light generator that irradiates the gas cell with irradiation light having at least two different frequency components; a light detector that detects transmitted light transmitted through the gas cell; and a controller that determines a resonance frequency based on a light amount of the transmitted light of the gas cell, and controls an oscillation frequency by the oscillator based on the determined resonance frequency. The atomic oscillator includes an agent that performs reinforcement learning to output an action for controlling a state of an environment according to the acquired state of the environment of the atomic oscillator using a reward corresponding to a difference between a preset reference frequency and an oscillation frequency.SELECTED DRAWING: Figure 6

A timepiece movement comprising, on the one hand, an analog time display, a gear train, a barrel and an electromechanical oscillator (10), the electromechanical oscillator being formed by a resonator (12) comprising a balance wheel and a piezoelectric hairspring and a mechanical escapement (18), and, on the other hand, an electronic control circuit (20) connected to an electrical energy source (30) and arranged to control the application of a voltage to at least one electrode of the piezoelectric hairspring in order to generate driving electric pulses for the oscillator. The timepiece movement is configured such that, in a first main state, the barrel alone can maintain the oscillator in functional oscillation at a first amplitude, while in a second main state, the electronic control circuit supplies power to the piezoelectric hairspring in order to partially or completely maintain the resonator in oscillation at a second amplitude greater than the first amplitude, the second amplitude being preferably constant, for any spatial orientation.

The present invention provides devices with faster and more efficient methods and interfaces for managing time-related user interfaces. In one embodiment, the device displays a user interface including a time indication and a graphical representation of a first character displayed on a background, the user interface simultaneously displaying the time indication and the graphical representation of the first character on the background, and complications providing date and weather information, respectively. In response to being in a second active state, the device displays the graphical representation of the first character in a second visual state corresponding to the second active state and different from the first visual state, the second visual state showing the first character with its eyes open.

To provide a quantum interference device that can realize a quantum interference effect having high frequency stability for magnetic field variation.SOLUTION: A quantum interference device 100 comprises: a space 2; and an alkali metal atom cell 3. A static magnetic field having a specific direction and intensity is applied to the space 2. The alkali metal atom cell 3 is provided within the space 2. Alkali metal atoms are filled in the alkali metal atom cell 3. A quantum interference state of the alkali metal atoms is generated by applying the static magnetic field to the alkali metal atom cell 3 and injecting excitation light having at least two different frequency components. A frequency component associated with formation of the quantum interference state, of frequency components of the excitation light is light including linear polarization being the same polarization direction to each other. The static magnetic field applied to the space 2 is adjusted to suppress variation for a magnetic field for a transition frequency between ground levels forming the quantum interference state.SELECTED DRAWING: Figure 21

To solve the problem that an oscillatory frequency does not become stable when the state of irradiation light fluctuates.SOLUTION: An atomic oscillator 100 of the present disclosure, comprises: a gas cell 101 filled with an alkali metal atom; a light generation portion 102 which irradiates the gas cell with irradiation light; a light detection portion 103 which detects a transmitted light which has transmitted the gas cell; and a control device 104 which determines a resonance frequency of the irradiation light on the basis of a detected light quantity of the transmitted light. The control device 104 stores correspondence information in which a feature quantity of a transmitted light spectrum and the state of the irradiation light are corresponded, the control device 104 extracts the feature quantity of the transmitted light spectrum from the detected transmitted light, performs an estimation processing which estimates the state of the irradiation light corresponding to the feature quantity of the extracted transmitted light spectrum on the basis of the correspondence information, and controls an irradiation state of the irradiation light on the basis of the estimated state of the irradiation light.SELECTED DRAWING: Figure 14

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 invention provides a signal transmission structure and a molecular clock, and relates to the technical field of electromagnetic wave conduction. The signal transmission structure comprises a filtering structure, a waveguide and an airtight cavity; the filtering structure comprises a plurality of filtering layers, and a connecting window corresponding to a waveguide interface of the waveguide is arranged in the filtering structure; target gas corresponding to the molecular clock is arranged in the airtight cavity, the waveguide is arranged in the airtight cavity, and a waveguide interface extends out of the airtight cavity; and the waveguide interface is connected with the connection window in parallel to the layer number overlapping direction of the filtering structure in the layer number overlapping direction. The molecular clock comprises a transmitting chip, a receiving chip and a signal transmission structure, the transmitting chip is used for transmitting an electromagnetic wave signal to the signal transmission structure; the signal transmission structure is used for transmitting the electromagnetic wave signal; the receiving chip is used for receiving the electromagnetic wave signal transmitted by the signal transmission structure. Through vertical connection of the waveguide and the filtering structure, the area required by connection is reduced, so that the size and difficulty of connection are reduced, and the overall airtightness is optimized.

A signal generator provides a periodic optical signal as output. The signal generator can be optically coupled to a splitter or other distribution network that transits the optical signal along multiple paths to terminate at different locations and / or for use by multiple electronic circuits. Each path can include a reflector element that reflects a portion of the signal back along the optical signal path. Reflections can be separated by operation of a circulator and photodiode. Output of the photodiode can be used to adjust phase and / or amplitude of optical signals traversing each optical signal path such that each electronic circuit receives an in-phase reference signal as input.

The invention relates to an analog diving watch with two concentric rotary bezels (12, 13) that allow immersion time and ascent time to be controlled independently and simultaneously. The first bezel (13) includes a mark (13') for setting the time from the start of immersion up to the expected moment of the start of the ascent; the second bezel (12) has a mark (12') to indicate the minimum time needed to complete the ascent safely. Both bezels are preferably regressive (move anticlockwise), allowing the remaining time to be seen at each stage. Optionally, the watch includes a chronograph with an additional minute hand (8). The invention improves safety by keeping the diver informed, without needing underwater manipulation or mental calculations.

To provide a time-related user interface for displaying and validating adjustment of a displayed time zone.SOLUTION: According to an embodiment, a user interface for initiating measurement of time is described. According to an embodiment, a user interface for validating and displaying a user interface using a character is described. According to an embodiment, a user interface for validating and displaying a user interface including an indication of current time is described. According to an embodiment, a user interface for validating a configuration of a background relative to the user interface is described. According to an embodiment, a user interface for validating a configuration of an application displayed on the user interface is described.SELECTED DRAWING: Figure 10B

To provide a piezoelectric resonator which can resist high electromagnetic fields while keeping the energy consumption and volume reduced.SOLUTION: A piezoelectric resonator, in particular for a rotary piezoelectric motor, includes a stationary base 3 and an oscillating mass 2 extending about a longitudinal axis. The oscillating mass is provided with at least one inertia-block 4, preferably two opposing inertia-blocks. The piezoelectric resonator includes a flexible blade guide connecting the oscillating mass to the base, so that the oscillating mass can be oscillated about a center of rotation in a pendulum movement. The flexible blade guide includes: a first flexible blade 6 connected to the base and / or to the oscillating mass to allow the displacement of the oscillating mass relative to the base; and a spiral spring 5 connected to the base and / or to the oscillating mass. The spiral spring includes at least partially an electrically actuatable piezoelectric material to thereby deform the spiral spring and oscillate the oscillating mass.SELECTED DRAWING: Figure 1