198results about "Electric unknown time interval measurement" patented technology

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.

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 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.

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.

This utility model discloses a comprehensive monitoring sensor for the braking time of a start-stop mechanism brake, relating to the field of brake monitoring technology. The sensor includes an acceleration sensor, a high-voltage detection device, a brake wheel accessory, and a fixing device. The brake wheel accessory includes a mounting frame and a permanent magnet. The fixing device includes a mounting base, with a base fixedly connected to its upper surface. A top cover is positioned directly above the base, and a connecting buckle is provided at the connection between the base and the top cover. Both the base and the top cover contain PCB boards. The outer surface of the PCB boards contains a microcontroller, parallel-input / serial-output IC chips, a Hall effect ring array sensor, and electrical connection pads. This utility model achieves integrated monitoring of brake action time, braking time, running time, brake wheel speed, number of braking cycles, and brake anomalies.

The application discloses a cathode partition-based image intensifier local exposure time and delay calibration system and method, solves the problem that the shortest exposure time calibration of the cathode whole surface of the gated image intensifier cannot distinguish the influence of the gate pulse width and the propagation time, causes the exposure time to be unable to be accurately measured and further introduces the timing error, and the application comprises a femtosecond pulse laser, a half-transmission half-reflection mirror, a gate power module, a CMOS camera, a high-voltage power supply, a signal source, a high-bandwidth oscilloscope, a photoelectric detector and an upper computer; the influence of the gate electric pulse propagation time and the gate electric pulse half-height width on the optical exposure time is decoupled and separated, and is respectively attributed to the sub-area relative delay and the sub-area local exposure time, the time resolution capability of the gated image intensifier can be improved, and the time measurement precision can be improved when the same half-height width of the gate electric pulse is selected for the same gated image intensifier.

The invention discloses a device and a method for measuring the beam outgoing time of an X-ray machine, and relates to the field of equipment testing, and the device comprises a signal sampling part, a signal processing part and a timer, the signal sampling part is used for detecting a main loop signal of the X-ray machine in real time; and the signal processing part is used for judging whether the main loop signal is greater than a set threshold value in real time, if so, controlling the timer to start timing, and if not, controlling the timer to stop timing so as to obtain the beam emitting time of the X-ray machine. By automatically controlling the timer to start and stop timing, the action of manually pinching a stopwatch is replaced, it is guaranteed that the timing part and the beam outgoing moment are electrically and synchronously conducted, the starting mode of the to-be-tested X-ray machine and the pressing reaction synchronization problem of an operator do not need to be concerned, synchronous beam outgoing measurement of the to-be-tested X-ray machine can be automatically achieved, and the measurement accuracy is improved. And the measurement efficiency and precision of the beam-out time are improved.

The application relates to a TDC system, in particular to a high-resolution TDC system based on a complementary blind mechanism and a time interval measurement method; a first processing chip, as a main processing channel, is responsible for high-speed coarse-grained sampling of a to-be-measured analog signal, determination of a blind area position of a time interval, provision of a coarse delay measurement value, and calculation of a fine time measurement value sent by a second processing chip to obtain a high-precision time interval measurement result; the second processing chip, as an auxiliary processing channel, is responsible for fine complementary blind of the blind area determined by the first processing chip, fine-grained sampling of the to-be-measured analog signal, accurate measurement of a high-resolution fine time measurement value in the blind area, and sending to the first processing chip; the technical scheme provided by the application can effectively overcome the defects of the prior art, i.e., the high-performance TDC solution does not simultaneously consider high resolution, high data bandwidth, high integration and reasonable cost.

A method and system for proactively monitoring the health of a robot end effector based on the timing of its response to gripping commands. A part presence sensor or other sensor provides a signal when a robot tool successfully grips or releases a workpiece. The time between each grip or release command and its execution is recorded by the robot controller. Timing data for all robots in a facility is collected by a data collection device and forwarded to an analytical data center, where the timing data for each end effector is analyzed. Alerts are sent to inform of problems detected with grippers when gripping times exceed a threshold or a deterioration trend in gripping timing is detected, and all analytical data is made available to a web portal for customer viewing and editing.The response timing of other types of end effectors besides grippers can be analyzed in a similar way for the purpose of proactive repair or replacement of the tools.

Systems and methods for timing the discharge of a firearm using a shot timer are described herein. The shot timer uses multiple levels of verification. A first level includes analyzing the audio signal to determine if a sound received is associated with the discharging of a firearm. A second level includes analyzing the posture of individuals to eliminate individuals that likely are not the individuals that discharged the firearm. A third level includes analyzing the movement of one or more firearms to determine which firearm was the source of the audio signal.

The utility model provides a pigeon clock pedal debugging system, and relates to the technical field of debugging systems. A to-be-debugged pigeon clock pedal is arranged at the top of the pedal positioning tool; a receiving coil matched with an induction coil in the pigeon clock pedal to be debugged is mounted in the pedal positioning tool; positioning abutting blocks are arranged on the front side, the left side and the right side of the top of the pedal positioning tool correspondingly. A capacitance adjusting hole of a to-be-debugged pigeon clock pedal faces upwards, and when the front end, the left end and the right end of the to-be-debugged pigeon clock pedal abut against the three positioning abutting blocks, the induction coil and the receiving coil are connected with a power source and the to-be-debugged pigeon clock pedal relative to the pigeon clock host. The receiving coil is connected with the oscilloscope; the technical scheme of the utility model solves the problem that a pigeon clock pedal debugging system capable of quickly and accurately adjusting parameters is urgently needed because the frequency, the phase and the amplitude cannot be quickly and accurately adjusted to factory required parameters in the conventional device.

The application discloses a motion timing method and device, electronic equipment and storage medium, and relates to the technical field of detection. The method comprises the following steps: acquiring instantaneous state information of a target object at each moment in a motion process, wherein the motion process comprises a static state of the target object; for any moment, determining a state difference value of the moment according to the instantaneous state information of the moment and the instantaneous state information of the previous moment; determining a motion starting moment and a motion ending moment of the target object according to the state difference values of the moments and a critical value, wherein the critical value is determined according to the state difference value of the static state of the target object; and determining a motion time of the target object according to the motion starting moment and the motion ending moment. Therefore, the accuracy of detecting the motion time of the moving object is improved.