259results about "Electric unknown time interval measurement" patented technology

The invention discloses a method for improving long-term stability of atomic time by using pulsar time, which comprises the following steps: acquiring timing observation data of a pulsar in a preset time period, and fitting timing model parameters of the pulsar; forecasting the time of arrival (TOA) data of the pulsar on the basis of the timing model parameters, meanwhile, continuing to carry out pulsar timing observation by using local atomic time, and comparing the observed TOA sequence with the forecasted TOA data to obtain timing residual data; wiener filtering and classical weighting processing are carried out on timing residual data of multiple pulsar to obtain a clock error sequence of local atomic time and comprehensive pulsar time, a result of smoothing processing of the clock error sequence is negated and then added to the local atomic time, and a new fusion time scale is obtained. According to the method, the paper local atomic time with higher long-term stability can be established, and a powerful guarantee is provided for generating national standard time with higher long-term autonomous retention capability by using a local atomic time control main clock system subsequently.

The invention discloses a method and related equipment for collecting accurate time in the molten iron adding process of a converter, and relates to the technical field of control in the steelmaking process in the metallurgical industry, and the method comprises the steps that weight information of an iron ladle in a crown block is obtained; in response to a preset condition, judging whether the weight information is reduced or not; under the condition that the weight information is reduced, the molten iron mixing starting time is obtained according to the current time; and under the condition that the weight information is 0, the molten iron mixing ending time is obtained according to the current time. By automatically collecting the starting time and the ending time of molten iron mixing, errors caused by manual recording are avoided. And the real-time transmission of the position information of the crown block and the weight information of the iron ladle is realized through the communication system, so that the operation efficiency is greatly improved.

The invention relates to a carry chain calibration method and device, a time measurement unit and equipment. The method comprises the following steps: acquiring a bit output sequence of a carry chain; segmenting the bit output sequence to obtain a plurality of segments to be processed; screening a target segment from the segments to be processed, and counting the number of times that each bit carry output is 1 in the target segment; and generating a remapping table of the physical bit position and the logic bit index of the carry chain based on the number of times that each bit carry output in each target segment is 1, and remapping the bit output sequence of the carry chain. By adopting the method, the precision of the multi-stage carry chain can be improved, so that systematic jitter is inhibited.

The invention relates to a two-step time-to-digital converter and a method thereof, a phase-locked loop and an analog-to-digital converter. The method comprises the following steps of: performing N1-stage delay on a reference signal rs in sequence, and performing coarse quantization on the delayed signal of each stage relative to a feedback signal fb; when the two signals are different, after the time t1 is delayed, the first arriving signal is selected as a time starting signal Start and the fb is delayed for the time t1 and then serves as a time stopping signal Stop in the delayed period, and when the two signals are the same, the rs is selected as Start after the time t2 is delayed, and the fb is selected as Stop after the time t2 is delayed; performing fine quantization formation on the Start and the Stop; and decoding the code into n1-bit high-bit binary codes and decoding the code into n2-bit low-bit binary codes. The technical problem that the area and power consumption of an existing two-step TDC are increased due to the fact that the number of logic gates of a selector is greatly increased along with the increase of coarse quantization bits is solved.

A method and system for proactively monitoring the health of a robot end-of-arm tool based on timing of response to gripping commands. A part presence or other sensor provides a signal when a robot tool successfully grips or ungrips a workpiece. The time between each grip or ungrip command and its completion is recorded by the robot controller. Timing data for all robots in a facility are collected by a data collection device and forwarded to an analytic data center, where the timing data is analyzed for each end-of-arm tool. Alerts are sent advising of issues which have been identified on grippers when grip times exceeding a threshold or a deterioration trend in grip time performance is detected, and all analytic data is provided to a web portal for customer viewing and action. Response timing for other types of end-of-arm tools besides grippers may be similarly analyzed for proactive tool repair / replacement.

The invention discloses a scanning type single-photon laser radar imaging system and an imaging method, and solves the technical problems of fuzzy depth estimation and insufficient background noise suppression capability caused by asynchronization of scanning galvanometer motion and pixel acquisition in the prior art. The imaging system comprises a signal acquisition unit, a time-to-digital converter, a signal delay generator, a galvanometer control unit and a main control unit, the signal acquisition unit is of a transceiving integrated structure, and the signal delay generator is respectively connected with the laser, the detector and the time-to-digital converter and is used for sending a synchronous signal to provide time sequence control; the main control unit is connected with the galvanometer control unit and is used for sending a deflection instruction to the galvanometer control unit; the galvanometer control unit is respectively connected with the galvanometer and the time-to-digital converter, and is used for controlling the deflection angle of the galvanometer, acquiring the deflection time information of the galvanometer and transmitting the deflection time information to the main control unit through the time-to-digital converter; and the main control unit processes the received electric signal and time information and realizes imaging.

A resistance-to-frequency, resistance-to-time converter including a first CFOA having an inverting input X1, a non-inverting input Y1 connected to an internal output Z1, an internal output W1 and an external output V0; a second CFOA having an inverting input X2 connected to resistor R3, a non-inverting input Y2 connected to resistor R2 and the Y1, an internal output Z2 connected to a capacitor C, an internal output W2 and an external output Vtr; a third CFOA having an inverting input X3 connected to a variable resistor RT, a non-inverting input Y3 connected to the Vtr, an internal output Z3 connected to a variable resistor RF, an internal output W3 and an external output V1 connected by a resistor R1 to the X1. Each CFOA is voltage saturated. The V0 is a square wave with period T proportional to RT / RF and a frequency of oscillation f proportional to RF / RT.

The utility model discloses a device for measuring the time of a belt scale, and relates to the technical field of belt scales, in particular to a belt frame, a belt, a firing pin, a sensor and a timer, and the belt is used for running on the belt frame; the firing pin is fixedly connected to the belt; the sensor is fixedly connected to the belt frame, and when the belt drives the firing pin to pass through the sensor, the sensor can detect the firing pin and generate an electric signal; the timer is in signal connection with the sensor and can record the time interval of the firing pin passing through the sensor twice, the structure is simple, use is convenient, and measurement is accurate and reliable.

A clock device is in communication with a remote computing device that is configured to adjust the time of a countdown and define an adjusted time value. The remote device communicates the adjusted time to the clock device, which automatically displays the adjusted time on a screen. The adjusted time is further communicated to a cloud server via API. The adjusted time is accessible by authorized third parties for display or broadcast. Accordingly, a user may adjust and track a countdown and may define an official time that is automatically displayed to a variety of end-users in real-time. The clock device may be positioned adjacent a competition area and may include a rigid metal frame and a flexible LED screen extending around the perimeter of the frame. The clock device may include hardware and software for processing and outputting the adjusted time to the cloud server.

The application discloses a time-to-digital converter based on pulse stretching. The time-to-digital converter structure combines frequency multiplication delay locked loop, pulse stretching circuit and calibration circuit, guarantees high resolution, effectively increases the range of the time-to-digital converter, and can reduce the influence of PVT. The calibration circuit has simple structure, low calibration cost, and is suitable for the calibration of the pulse stretching circuit. In addition, the calibration algorithm for the static phase error of the frequency multiplication delay locked loop only needs to increase a 1bit counter, the additional circuit cost is very small, and the influence of the static phase error of the frequency multiplication delay locked loop can be overcome.

This application relates to a high-precision timing system and method based on dual-channel time measurement. The system includes: a filtering module for receiving analog signals output from a particle detector, filtering and denoising the analog signals, and converting the processed signals into two co-source valid signals for output; a time measurement module for receiving the two co-source valid signals, and by configuring a first discrimination threshold and a second discrimination threshold, performing discrimination processing on the two co-source valid signals respectively, capturing the characteristic time when each signal reaches the corresponding discrimination threshold, and outputting the first characteristic time and the second characteristic time; and a data processing module for calculating and storing the high-precision arrival time based on the approximately linear characteristics of the rising edge of the signal pulse, according to the first discrimination threshold, the second discrimination threshold, the first characteristic time, and the second characteristic time. Using this system, particle arrival time measurement can be achieved with both stability and high precision, meeting the application requirements of high-precision timing scenarios.

The utility model discloses an electric railing rising and falling time measuring device which comprises an electric railing machine and a railing arm, the railing arm is rotatably connected with the electric railing machine, a first magnetic proximity switch and a second magnetic proximity switch are arranged on one side of the electric railing machine and located below the railing arm, and the first magnetic proximity switch and the second magnetic proximity switch are arranged in a crossed mode. The handrail arm is in contact with the top of the first magnetic proximity switch when falling, and the handrail arm is in contact with the right end of the second magnetic proximity switch when completely lifted. Precision and accuracy of the rising and falling time test of the electric handrail can be effectively solved, and gross errors caused by personnel response during manual test are avoided at the same time.

To measure a time difference between two clocks under test with high precision using the D-DMTD method even when the frequency of one of the two clocks under test is an integer multiple of the other.SOLUTION: A clock time difference measurement device includes: a first sampling circuit 10 that samples a first clock on the basis of an offset clock to generate a first sampling signal; a second sampling circuit 20 that samples a second clock on the basis of the offset clock to generate a second sampling signal; a phase difference overflow detection circuit 30 that detects a phase difference overflow between the first sampling signal and the offset clock and outputs a third sampling signal; and a signal division / phase difference overflow detection circuit 40 that divides the second sampling signal into z pieces to generate z divided signals, detects a phase difference overflow between the divided signals and the offset clock to generate a fourth sampling signal, and further combines the fourth sampling signals to generate a fifth sampling signal.SELECTED DRAWING: Figure 1

The application relates to a configurable time domain pipeline analog-to-digital converter, comprising: a first configurable analog-to-digital converter and a plurality of cascaded second configurable analog-to-digital converters, wherein the first configurable analog-to-digital converter serves as a first stage of the configurable time domain pipeline analog-to-digital converter, is used for converting an input voltage signal into a time signal, and transmitting the quantized time signal to the plurality of cascaded second configurable analog-to-digital converters; the second configurable analog-to-digital converter is used for amplifying and quantizing the input residual time signal stage by stage to generate corresponding digital codes and residual time signals; wherein the first configurable analog-to-digital converter and the second configurable analog-to-digital converter realize the time gain configurable function through a set of discharge and charge switch capacitor arrays. The application adopts the structure of the configurable TA and SA TDC, avoids the use of a voltage amplifier, has high linearity, meets the precision configuration requirements of the ADC, and does not need a time residual generator.

The present application discloses a device for measuring time of flight, a storage medium, and a device. The present application obtains a plurality of timestamp sets collected by a time-to-digital converter during an integration period, obtains a histogram based on the plurality of timestamp sets, slides a time window between a start time and an end time of the histogram, and counts the number of count values of all timestamps covered by the time window at each sliding position. The position with the largest total number of timestamps is the target position, that is, the time when the echo signal is received is within the range of the time window at the target position, and the time of flight is calculated accordingly. Therefore, the embodiments of the present application can make the timestamps of the echo signal easier to determine, so the signal-to-noise ratio SBNR of the distance detector can be improved, thereby effectively improving the accuracy of the distance detector in measuring the time of flight.

The invention relates to a satellite clock frequency difference and phase difference determination method, system and device, a medium and a product, and the method comprises the steps: carrying out the bidirectional comparison clock difference measurement of adjacent satellites when a time-frequency reference reported by an operation control center is received, and obtaining the initial frequency difference and initial phase difference of a satellite clock; performing volume Kalman filtering prediction on the initial phase difference according to the current time frequency information and a clock phase difference value at a previous moment of the current moment to obtain a phase difference prediction value; according to a preset period, taking a frequency difference average value measured by the neighbor satellites of the adjacent satellites as a target frequency difference of a satellite clock, and taking a phase difference average value measured by the adjacent satellites as an updated initial phase difference; and processing the phase difference predicted value, the target frequency difference and the updated initial phase difference by adopting a volume Kalman filtering strategy to obtain the target phase difference of the satellite clock, so that an accurate adjustment basis is provided for calibration of the satellite clock, and the clock synchronization precision is improved.

The application discloses a kind of based on limited observation data's simulation residual determination method, comprising: pulsar observation data is obtained after processing timing residual, timing residual includes time value and timing residual value;Timing residual value is arranged from big to small, corresponding time value is also arranged;The number of sample timing residual value in different interval range is counted, and the frequency distribution diagram of sample timing residual value in different interval is drawn;Determine the probability statistical distribution model to which frequency distribution belongs;Specific parameters of probability statistical distribution model are solved;The number of simulation residual value is determined;According to probability statistical distribution model, simulation is obtained simulation residual value, set corresponding time value for simulation residual value, simulation residual value is added to sample observation data.The application establishes probability statistical model based on actual data according to the actual residual data obtained, and then simulates to obtain simulation residual value according to the model, which is closer to the original sample value, and improves the accuracy of pulsar time.

A connector assembly may include a cover defining a cavity, a luer portion extending through an open end of the cover, a proximal connector disposed at least partially in the cavity of the cover, a pusher mounted on the proximal connector, a distal connector at least partially disposed in the cover, and a stopwatch mounted on the cover and including at least one contact. The pusher may include a body portion and first and second pusher legs extending from the body portion. When the distal connector is coupled to a mating connector, the stopwatch may abut the first pusher leg such that the at least one contact is recessed within the stopwatch. When a force applied to the proximal connector exceeds a predetermined threshold the stopwatch may be separated from the first pusher leg and the at least one contact may extend proximally to activate a timer of the stopwatch.

The invention discloses a time-to-digital converter based on a vernier double-chain structure, and relates to the technical field of integrated circuits. The converter comprises a signal holding circuit, a vernier double-chain rough measurement module, a data selector, a special time amplifier module and a digital coding unit, the vernier double-chain rough measurement module is composed of a main delay chain and a vernier delay chain, and 10ps-level rough measurement is achieved by adjusting the width-to-length ratio of an MOS tube of a phase inverter to control the delay difference of a unit. The data selector gates a residual time difference signal to the special time amplifier module, and the special time amplifier module is matched with a transmission gate through an RC network to realize 11mV / ps high-linearity time-voltage conversion; the digital coding unit integrates the rough measurement result and the accurate measurement result, and finally the 3.0 ps system resolution is achieved. A'rough measurement-fine measurement 'two-stage measurement architecture is adopted, a single-amplifier time division multiplexing design is adopted, a measurement dead zone is effectively eliminated, the chip area and power consumption are greatly reduced, and the device is particularly suitable for high-precision time measurement application such as laser radar and quantum calculation.

Monitoring track tension of track-enabled work machines using work machine acceleration and transmission speed sensors is provided. When a speed change of a work machine is detected, a timer is started. When an acceleration or deceleration of the work machine is detected, the timer is stopped. Elapsed time between the start of the speed change and the detection of acceleration or deceleration may indicate an amount of time required for taking up slack or sag in a work machine track. If the time required for taking up the slack or sag is excessive, an indication may be received that the track is too loose. If time required for taking up the slack or sag is minimal, an indication may be received that the track is too tight. The determination of the time required for taking up the slack or sag may indicate that tension in the track requires adjustment.

The invention relates to the field of timers, and discloses a double-clock-driven high-precision timer and a timing method thereof, and the method comprises the steps: a slow clock test module tests the frequency ratio of a fast clock to a slow clock; the error statistics module accumulates the decimal part of the frequency ratio when the system is switched to the sleep state, and outputs an error correction mark to the timing module when the accumulated value is greater than or equal to 1; when the system is in a working state, the timing module adds 1 on the rising edge of each fast clock; when the system is in a sleep state, if the timing module does not receive an error correction mark, the timing module carries out timing at each slow clock rising edge to increase an integer part of a fast and slow clock frequency ratio; and if the timing module receives the error correction mark, the timing module adds 1 on the basis of the rising edge of the current slow clock and the integer part of the frequency ratio of the fast and slow clocks increased in timing, so that the error is reduced to the minimum, the influence of the error on the timing precision is greatly reduced, and the timing precision of the timer is improved.

The invention discloses a time measurement precision improving method, device, system and equipment, a medium and a product, and relates to the technical field of time measurement. The method is executed by a data processing device located in the time measurement system, the time measurement system further comprises a multi-period delay chain, an edge position recording module and an edge clock counting module, the multi-period delay chain is used for transmitting a measured signal and is formed by connecting M * N delayers with the same delay duration in series, and the edge position recording module is used for recording the edge position of the measured signal. The edge position recording module is used for recording the edge delayer and each appearance position corresponding to each transmission period one by one based on the sampling clock signal; and the data processing device is used for determining a time label value of the pulse edge according to the delay time length, each appearance position from the edge position recording module and the number of the clock periods from the edge clock counting module, so that the time label value of the pulse edge can be determined on the premise that the delay time length precision of the delayer is not improved. And the time measurement precision is further improved.

The invention discloses a bipolar voltage-time converter based on phase inverter threshold detection. The bipolar voltage-time converter is characterized in that a differential sampling circuit is connected with a sign bit comparator and a bipolar voltage-time conversion circuit; the sign bit comparator is used for receiving the differential sampling voltage output by the differential sampling circuit and judging the polarity of an input differential analog signal, and is connected with the bipolar voltage-time conversion circuit to output a sign bit signal and a polarity control signal; the bipolar voltage-time conversion circuit is used for charging or discharging the differential sampling voltage under the control of the polarity control signal to generate two paths of voltage ramp signals with opposite polarities, and is connected with the common-mode feedback circuit and the inverter threshold detection circuit; the common-mode feedback circuit is used for detecting a common-mode level of the differential sampling voltage or two paths of voltage ramp signals; the threshold voltage of the inverter threshold detection circuit is configured to be a predetermined common-mode level, and is used for detecting a crossover event of the two voltage ramp signals at the predetermined common-mode level and outputting a threshold detection signal.

A processing system includes a peripheral device configured to store security information and having a clock input to receive a gated clock; a watch clock generator configured to generate a watch clock having a reduced duty cycle relative to the system clock; and clock control circuitry configured to select the system clock as a gated clock during normal operation of the peripheral device and select the watch clock as a gated clock during a low power mode of the peripheral device. The watch clock generator may include a counter that counts system clock cycles and a clock pulse selector, such as a mode circuit, configured to select the cycles of the system clock to generate a watch clock. For multiple peripherals, the delay circuitry may skew a watch clock between two or more peripherals. A plurality of watch clocks having different delayed duty cycles may be generated, each for a corresponding group of a plurality of groups of peripherals.

To efficiently record activities using a wrist information apparatus and a portable terminal.SOLUTION: An information terminal which includes an operation section configured to receive an operation by a user and is configured to be used together with a wrist information apparatus having a timer function, includes: a positioning module configured to obtain position information using a satellite positioning system; a communication device configured to perform communication with the wrist information apparatus; a storage device; and a control circuit. The control circuit obtains, when connection of the communication is established, information about the operation of the timer function which is input into the wrist information apparatus, from the wrist information apparatus via the communication device, obtains the position information which is obtained using the satellite positioning system, from the positioning module, and stores, in the storage device, the position information and the information about the operation of the timer function in association with each other.SELECTED DRAWING: Figure 2

The invention relates to a multi-event time-to-digital converter capable of expanding a measuring range, and the converter comprises a T trigger array which is used for coding an end signal according to the time sequence of a collection event, so as to enable the end signal to generate an edge change signal; the TDC delay chain is used for generating a time stamp of the edge change signal in each delay unit according to the edge change signal; the exclusive-OR gate module is used for carrying out logical judgment according to the time stamp of the edge change signal so as to determine the event distribution of the collected events; the D trigger array is used for latching the event distribution of the collected events in each coarse counting clock period and storing the event distribution into the corresponding storage unit; and the histogram statistics module is used for distributing a time difference between an end signal and a start signal of the acquisition event to each time interval range so as to generate a statistical histogram of event distribution of the acquisition events of the M coarse counting clock periods. According to the invention, the range of the multi-event time-to-digital converter can be greatly improved, and high time measurement precision can be maintained.

The invention provides a pulse timing method and system based on mixed supervised learning and electronic equipment, the method comprises a self-supervised learning part and a weak supervised learning part, and the self-supervised learning part comprises the following steps: carrying out random sub-sequence sampling on sampling waveforms of an analog-to-digital converter at the same or lower sampling rate to obtain sampling sub-sequence matching pairs, recording a label of a self-supervised learning loss function by using the relative position of the sampling sub-sequence matching pair, inputting the sampling sub-sequence matching pair into a neural network, and calculating self-supervised loss; the weak supervision learning comprises the steps of obtaining a reference time sequence and a timing label, inputting the reference time sequence into a neural network, and calculating weak supervision loss; and finally, forming a mixed supervision loss function by the sum of the self-supervision loss and the weak supervision loss, and jointly applying the mixed supervision loss function to neural network reverse conduction training. According to the method, the neural network timing model can be trained under the condition that only a small number of labeled samples are provided, and the purpose of high-precision pulse timing is achieved.

The invention discloses a high-precision time difference measurement circuit and measurement method suitable for taming a crystal oscillator, and the circuit comprises an MCU module, a GNSS second pulse signal module, an external high-precision crystal oscillator module, a differential-to-single-ended module, a frequency dividing circuit, a time-to-digital converter, and a power unit, and the GNSS second pulse signal module is connected with the frequency dividing circuit through the differential-to-single-ended module. The external high-precision crystal oscillator module is connected with the frequency dividing circuit, the output end of the frequency dividing circuit is connected with the time-to-digital converter, the time-to-digital converter is in communication connection with the MCU module, and the power supply unit is electrically connected with the MCU module, the GNSS second pulse signal module, the external high-precision crystal oscillator module, the differential-to-single-ended module, the frequency dividing circuit and the time-to-digital converter. According to the application, the single-channel measurement precision is high, the circuit size is small, and the circuit can be widely transplanted and applied to high-precision time keeping and time service systems in various fields.