53 results about "Rate measurement" patented technology

The present invention relates to the technical field of cold spraying. Disclosed are a tracking temperature and rate measurement monitoring device suitable for a cold spraying process. The device comprises a box body; a collection mechanism for collecting a coating is installed in an inner cavity of the box body; a clamping mechanism used for clamping and fixing a base plate is installed at the top of the box body; a lifting / lowering mechanism used for height adjustment is installed at the top of the box body; a spraying mechanism used for coating the base plate is installed at the top of the lifting / lowering mechanism; a supporting plate is fixedly connected at the top of the box body; and an infrared monitor used for monitoring the surface temperature of the base plate is fixedly connected on one side of the supporting plate. In the present invention, the infrared monitor can monitor the surface temperature of the base plate and display the temperature on a display screen for a worker to observe and understand. A rate measurement instrument can monitor the spraying rate during a spraying process and reflect the rate on a display screen electrically connected to the rate measurement instrument, also for the worker to observe and understand, thereby avoiding the use cost caused by additionally providing a device and also improving the practicability of the device.

The application provides a differential interferometric SAR satellite deformation rate measurement precision analysis calculation method and system. The implementation steps of the application are as follows: (1) establishing a differential interferometric SAR satellite long-time sequence deformation rate measurement equation, and determining various error sources affecting the system deformation rate measurement precision; (2) deducing an error transfer function of each error source of the differential interferometric SAR long-time sequence deformation rate measurement on the target long-time sequence deformation rate measurement precision; (3) designing satellite system parameters; (4) calculating the influence degree of each error source on the differential interferometric SAR long-time sequence deformation rate measurement precision of the satellite system; and (5) solidifying the calculation process, and quickly responding when the satellite system design parameters change. The application can be used for the overall design of a differential interferometric SAR long-time sequence deformation rate measurement satellite system.

A method, computer-readable media, and system associated with psychiatric and physiologic monitoring of a patient having PTSD or anxiety-related mental health conditions are provided. For example, data associated with a survey or questionnaire that was provided to a patient is received. A score may be determined from the data associated with the survey or questionnaire. A time-series is formed using heart-rate measurements detected by a sensor. Fractal properties, such as a Hurst exponent, may be calculated for the time-series. The score may be contextually matched to a set of reference scores. Further, the contextual matching may be used to determine a range of normative HRV values for determining whether a value associated with the patient is within the range. If the value associated with the patient is not within the range, a notification may be provided.

The present invention relates to the technical field of plastering gypsum spreading rate measurement, and specifically relates to a plastering gypsum spreading rate measurement device, which includes a bracket, a spreading rate testing mechanism, a weighing mechanism and a supporting mechanism installed on the bracket. A limiting mechanism for limiting the spreading rate testing mechanism is installed on the weighing mechanism; when adding slurry to the template, the weighing mechanism is not activated, that is, in an unweighed state. At this time, the connecting frames on both sides of the driving frame are in the initial position, and the hook seats on the two cross bars insert the clamping columns into the clamping holes on the two groups of ear plates, realizing the horizontal direction limitation of the template, avoiding the horizontal movement of the template during the scraping of the scraping mechanism and affecting the scraping. When the driving frame rises, it will drive the two connecting frames to rise at the same time. Since the length of the clamping column is less than the distance between the pushing frame and the bottom of the template, the two groups of clamping columns are separated from the clamping holes on the ear plates first, and then the pushing frame on the weighing assembly pushes the template to complete the weighing, without affecting the rising of the template.

The invention provides a flow velocity measurement method and system based on dynamically updated KCF, and the method comprises the steps: collecting video data, carrying out the preprocessing, and obtaining a difference image; performing target detection on the difference image by using a target detector, obtaining position information of a target in all frames in the difference image, and initializing a KCF tracker through the position information of the frame; obtaining the predicted position information of the frame of the target through a KCF tracker, and carrying out the calculation through the position information of the frame and the predicted position information of the frame, and obtaining a response value; performing overlap ratio calculation on the frame prediction position information of which the response value is greater than the response value threshold and the frame position information, and recording the prediction position information of which the overlap ratio is greater than the overlap ratio threshold; and calculating the river surface flow velocity according to all the recorded predicted position information, and outputting a result. The objective of the invention is to improve the accuracy and stability of floating object tracking in a complex hydrological environment, thereby improving the precision of flow velocity measurement.

A data processing device 1 includes: a temperature identification unit 181 that identifies the seabed temperature at a position on a seabed where a measurement device is to be installed, the measurement device creating measurement data of seismic waves associated with an internal time at which the seismic waves were detected in response to vibration waves being emitted from a hypocenter; a temperature lowering unit 182 that sets the temperature of an oscillator 41 installed inside the measurement device present at a location other than in seawater to the seabed temperature; a rate measurement unit 183 that measures an aging rate, which is a rate of change over time in the frequency of the oscillator 41, in a state where the temperature of the oscillator 41 installed inside the measurement device present at the location other than in seawater has reached the identified seabed temperature; and a correction unit 188 that corrects the internal time associated with the measurement data on the basis of the aging rate after the measurement device installed on the seabed creates the measurement data.

The present application provides a method and apparatus for determining fluid flow rate and an ultrasonic flowmeter. Based on the obtained flight time difference of the target signal, the reference sound speed at the current temperature is determined. Based on the reference sound speed and the flight time differences of the upstream and downstream signals at the current temperature, the reference signal flight time difference is determined. Further, according to the reference signal flight time difference and the target signal flight time difference, temperature compensation is performed on the reference sound speed to obtain the true sound speed at the current temperature. Then, based on the true sound speed, the fluid flow rate at the current temperature is determined; by adjusting the reference sound speed based on the reference signal flight time difference determined by the calibrated target signal flight time difference and the reference sound speed, the reference temperature is made to approach the true sound speed at the current temperature. Thus, the fluid flow rate at the current temperature is determined through the true sound speed with higher accuracy, reducing the influence of temperature changes on measurement accuracy and improving the accuracy of fluid flow rate measurement.

The application discloses a kind of halftone mask through rate measurement methods, on halftone mask, in one field of view, with adjacent full transparent area, non-transparent area and semi-transparent area, measurement method is: first, in the both sides of halftone mask respectively no contact setting laser transmitter and laser receiver;Then only open laser transmitter, so that the laser that laser transmitter emits passes through semi-transparent area;Then open laser receiver, laser receiver respectively obtains the laser signal that full transparent area, non-transparent area and semi-transparent area are penetrated, and respectively recorded as A, B, C;Finally, the transmittance T of semi-transparent area is calculated, and the calculation formula is: T=[(C-B) / (A-B)]×100%;The halftone mask through rate measurement method of the application is simple and fast in measurement operation, contactless measurement throughout, can satisfy the high-precision processing requirement of halftone mask.Simultaneously, measurement is carried out using photoelectric signal, and measurement precision is high, and the requirement of measurement tool and environment is lower.

The invention relates to a body fat rate measurement method, wearable equipment, electronic equipment and a medium, and the body fat rate measurement method comprises the steps: inputting a preset current to a target object based on an electrode, obtaining an impedance parameter of the target object based on the preset current, obtaining an electrocardiogram characteristic of the target object, and obtaining a body fat rate of the target object based on the impedance parameter and the electrocardiogram characteristic; and determining a target feature set, and determining the body fat rate of the target object based on the relationship between the target feature set and the body fat rate. The body fat rate of the target object can be jointly determined in combination with the impedance parameter of the target object and the electrocardiogram characteristics, the accuracy and stability of the measured body fat rate can be improved on the basis of the characteristic that the electrocardiogram characteristics are slightly influenced by external factors and internal factors of the target object, and therefore the more accurate body fat rate is obtained, and the user experience is improved. The user can conveniently manage the health, and the user experience is improved.

The present invention discloses a detection method for a Coriolis mass flowmeter. The method includes: collecting vibration signals at the inlet end and the outlet end of the measuring tubes, where the number of measuring tubes is at least two, and at least one vibration detection unit is respectively arranged at the inlet end and the outlet end of each measuring tube; determining at least two mass flow rate data according to the collected vibration signals at the inlet end and the outlet end of the measuring tubes, and determining whether the difference between the at least two mass flow rate data is within a set error range; if the difference between the at least two mass flow rate data is not within the set error range, it is determined that the Coriolis mass flowmeter has a fault. In the present invention, the number of measuring tubes is set to be at least two, and the corresponding mass flow rate is determined by collecting and processing the vibration signals of these at least two measuring tubes, overcoming the drawbacks of relying on the same measuring tube in the prior art and improving the accuracy of the mass flow rate measurement result.

A method, computer-readable media, and system associated with psychiatric and physiologic monitoring of a patient having PTSD or anxiety-related mental health conditions are provided. For example, data associated with a survey or questionnaire that was provided to a patient is received. A score may be determined from the data associated with the survey or questionnaire. A time-series is formed using heart-rate measurements detected by a sensor. Fractal properties, such as a Hurst exponent, may be calculated for the time-series. The score may be contextually matched to a set of reference scores. Further, the contextual matching may be used to determine a range of normative HRV values for determining whether a value associated with the patient is within the range. If the value associated with the patient is not within the range, a notification may be provided.

The present invention relates to the technical field of power system frequency change rate measurement, and discloses a method, device and storage medium for determining a power grid frequency change rate measurement window. The present invention determines the total system kinetic energy and typical N-2 faults under the target operation mode, determines the unbalanced power of the system after each typical N-2 fault occurs, and further calculates the theoretical value of the system frequency change rate corresponding to the corresponding target fault; determines the target frequency change rate measurement point; constructs a target constraint condition for the measurement parameter values of different target frequency change rate measurement points corresponding to each target fault under different frequency change rate measurement window values, uses minimizing the frequency change rate measurement window as the objective function, and establishes a frequency change rate measurement window optimization model; optimizes and solves the model to obtain the optimal frequency change rate measurement window and outputs it. The present invention can solve the optimal value of the power grid frequency change rate measurement window under high-proportion new energy penetration, and has the advantages of wide applicability and high flexibility.

This flow rate measurement device comprises: a reception detection means for detecting an ultrasonic signal transmitted from one ultrasonic transducer and received by another ultrasonic transducer; a first timer that measures a first time that is the time from when the ultrasonic signal is transmitted from the one ultrasonic transducer to a change timing at which a value of a clock pulse changes; a second timer that measures a second time that is the time from when the ultrasonic signal received by the other ultrasonic transducer is detected by the reception detection means to the change timing; and a calculation means for calculating a flow rate of fluid on the basis of the first time and the second time. A driving means varies, by only a predetermined time, a transmission timing of a drive signal in a case in which the flow rate calculated by the calculation means is equal to or less than a threshold, and a transmission timing in a case in which the flow rate exceeds the threshold.

To reduce a flow rate error.SOLUTION: The time measurement unit 16 measures the zero-cross time of the ultrasound reception signal in the forward direction in which the ultrasound is transmitted from the transducer 11 and received by the transducer 12 and the zero-cross time in the reverse direction in which the ultrasound is transmitted from the transducer 12 and received by the transducer 11, and stores the zero-cross times in the time array of the storage unit 17. When an absolute value of a difference between a reference coherent zero cross time stored in a predetermined coherent storage position of the time array and a zero cross time to be compared derived from the same type of peak as the peak of the ultrasonic reception signal corresponding to the coherent zero cross time among the zero cross times stored in the time array of the measurement time different from the coherent zero cross time is equal to or greater than a threshold value, the determination unit 18 determines that the time array including the zero cross time to be compared is abnormal.SELECTED DRAWING: Figure 1

A precision gyroscope which provides mode matching which is insensitive to rate input in response to continuously monitoring the split between the resonances of the drive and sense modes. A calibration signal, having at least one modulated term whose carrier is synchronous with the excitation in the drive resonator is utilized to modify the feedback signal in the sense resonator. The gyroscope thus does not suffer from corruption of, or from, the rate measurement; whereas the frequency of the calibration signal can be chosen independently of the bandwidth of the rate input.

The application provides a kind of millimeter wave radar human heart rate measurement method and system based on respiratory harmonic analysis.The method uses the I / Q signal collected by millimeter wave radar, uses the extended DACM algorithm to obtain phase change information;Then analyze the time domain waveform of vital sign information, calculate the non-symmetry parameter of respiration and the pause parameter of respiratory gap, to analyze the bandwidth of dynamic adjustment notch filter, while suppressing the influence of respiratory harmonic on the heartbeat spectrum;Finally, through the time domain number peak way, the heart rate estimation range is reduced, and the Chirp-Z transform is applied to obtain higher accuracy heartbeat frequency.The heart rate measurement method of the application is simple, and compared with the previous respiratory harmonic elimination method, the strength of respiratory harmonic is more effectively analyzed and targetedly suppressed, and the measurement accuracy when the heart rate and the respiratory harmonic frequency coincide can be effectively improved.

The application discloses a kind of wellhead three-phase content rate measurement methods based on multi-parameter fusion, temperature and pressure electric multi-parameter fusion network includes: temperature and pressure NN-LSTM module, microwave Transform module, attention multi-parameter aggregation module and prediction output module, the input sample of temperature and pressure electric multi-parameter fusion network is temperature related signal, pressure related signal, microwave difference frequency phase related signal and microwave difference frequency amplitude related signal, and output is the water content rate prediction value of sample.The wellhead three-phase content rate measurement method of the application: obtain the sample to be predicted;Using the temperature and pressure electric multi-parameter fusion network trained, the water content rate prediction value of the sample to be predicted is obtained by predicting the sample to be predicted.The wellhead three-phase content rate measurement method of the application accurately predicts the water content rate of oil wellhead produced liquid.

A system for measuring drip rate may include a drip chamber device comprising an elongated body including an inner surface defining a chamber, and a drip rate measurement device. The drip chamber may be fluidly coupled to a container containing an IV fluid configured to drip droplets of the IV fluid into the chamber. The drip rate measurement device may include a housing configured to be mounted to the elongated body of the drip chamber, and a load cell transducer mounted in the elongated body and extending into the chamber. The load cell transducer may be configured to measure a weight of the droplets of the IV fluid and convert the weight into an electrical signal. The drip rate measurement device may further include a controller electrically coupled to the load cell transducer to process the electrical signal and output at least one parameter associated with the IV fluid.

A system for measuring a drip rate may include a drip chamber device including an elongated body having an inner surface defining a chamber, and a drip rate measurement device. The drip chamber may be fluidly coupled to a container containing an IV fluid configured to drip droplets of the IV fluid into the chamber. The drip rate measurement device may include a housing configured to be attached to the elongated body of the drip chamber, and a load cell transducer attached to the elongated body and extending into the chamber. The load cell transducer may be configured to measure a weight of the droplet of IV fluid and convert the weight into an electrical signal. The drip rate measurement device may further include a controller electrically coupled to the load cell transducer to process the electrical signal and output at least one parameter related to the IV fluid.

One or more embodiments of the present disclosure relate to obtaining a first state estimate corresponding to an object, the first state estimate including a first velocity vector estimate corresponding to the object. The disclosure may further relate to receiving first sensor data corresponding to a first portion of the object. The embodiments may further include determining a first expected measurement corresponding to the first portion, the first expected measurement including a first expected range rate determined based at least on the first angle measurement and the first velocity vector estimate of the first state estimate. And, determining a second state estimate corresponding to the object, the second state estimate including a second velocity vector estimate corresponding to the object and determined based at least on the first range rate measurement and the first expected range rate.

Method for controlling a flow rate measurement for filling a tank (10) connected to a pressurized fluid distribution station (100), the station (100) comprising a fluid source (2), a distributor (4) connected to the source (2) and a supply hose (6) connected to the distributor (4) and intended to be coupled to the tank (10) to be filled, the distributor (4) being equipped with a pressure sensor, a temperature sensor, and a flow meter, the method comprising the following operations: - measurement (S1) of a flow rate value (t) at a given time (t) using the flow meter installed at the distributor (4), - estimation (S2) of a flow rate value (t) at the distributor (4) at time (t), the estimation being based on the following parameters: a first value of the fluid pressure (t) at time (t) measured by the pressure sensor installed at the distributor,a second data point of the fluid temperature () at time (t) measured by the temperature sensor installed at the distributor (4), a third data point of the fluid pressure () at time (t) in the tank (10) to be filled, the third data point being measured using a pressure sensor located in the tank (10) or calculated from a physical model, a fourth predetermined data point of the hydraulic pressure loss coefficient () due to the supply hose (6), - comparison (S3) between the measured data () and the estimated data () of the flow rate at time (t), - generation (S4) of a signal representative of the reliability of the estimated data () of the flow rate. Figure of the abstract: Figure 2,

The invention relates to the technical field of plastering gypsum coating rate measurement, in particular to a plastering gypsum coating rate measuring device which comprises a support, a coating rate testing mechanism, a weighing mechanism and a supporting mechanism, the coating rate testing mechanism, the weighing mechanism and the supporting mechanism are mounted on the support, and a limiting mechanism for limiting the coating rate testing mechanism is mounted on the weighing mechanism; when the template is placed and added with slurry, the weighing mechanism is not started, namely the weighing state is not carried out, at the moment, the connecting frames on the two sides of the driving frame are located at the initial positions, clamping columns are inserted into clamping holes in two sets of lug plates through hook bases on two transverse rods, the template is limited in the horizontal direction, and it is avoided that when the scraping mechanism carries out scraping, the template moves horizontally to affect scraping; when the driving frame ascends, the two connecting frames are driven to ascend at the same time, and due to the fact that the length of the clamping columns is smaller than the distance between the pushing frame and the bottom of the formwork, the two sets of clamping columns are separated from the clamping holes in the lug plates firstly, then the pushing frame on the weighing assembly pushes the formwork, weighing is completed, and ascending of the formwork is not affected.

The invention provides a plant liquid flow velocity measurement method and system, computer equipment and a medium, and belongs to the field of liquid flow velocity detection in phytophysiology, the method comprises the following steps: collecting upstream and downstream discrete sequences of a target plant branch liquid flow to construct a cross-correlation function; calculating a sampling point interval by using an initial window, substituting all sampling points into a cross-correlation function to calculate a cross-correlation value, and counting a maximum value and a mean value; determining the transit time based on the sampling point corresponding to the maximum value, and adaptively adjusting the window size according to the standard deviation of the transit time and the maximum peak value and mean value of the cross-correlation value until the stability and correlation constraint conditions are met; according to the method, self-adaptive adjustment of the window length is achieved, the measurement problem caused by long signal delay time at the plant liquid flow velocity is effectively solved, the reliability and efficiency of plant liquid flow velocity measurement are remarkably improved, and an effective technical means is provided for plant physiology and ecology research.

The present invention provides a pipeline efficiency measurement and evaluation device and its operation method, belonging to big data. The device includes: a unit test efficiency measurement module, which is used to measure the number of unit tests and the unit test success rate data during the execution of the pipeline in the unit test stage, and adjust the configuration of the build machine and the parallelism of the pipeline; a code scanning efficiency measurement module, which is used to measure the code scanning efficiency of the pipeline in the code scanning stage, determine the overall server performance, and adjust the execution concurrency; a build duration and success rate measurement module, which is used to measure the build duration and success rate of the pipeline in the build stage, and adjust the concurrency number and waiting duration; a deployment duration and success rate measurement module, which is used to measure the duration and success rate of the pipeline in the deployment stage, and determine the usage status of the pipeline server. The present invention can improve the execution efficiency of the overall pipeline and make the entire pipeline run in a stable and efficient state.

To enable accurate correction of internal time. [Solution] The data processing device 1 has a temperature determination unit 181 that determines the seabed temperature at a position on the seabed where a measuring device is installed that creates measurement data for seismic waves associated with the internal time at which the seismic waves were detected in response to the emission of seismic waves from an epicenter; a low-temperature reduction unit 182 that changes the temperature of an oscillator 41 built into the measuring device located in a location other than seawater to the seabed temperature; a rate measurement unit 183 that measures the aging rate, which is the rate of change over time in the frequency of the oscillator 41, when the temperature of the oscillator 41 built into the measuring device located in a location other than seawater has reached the determined seabed temperature; and a correction unit 188 that corrects the internal time associated with the measurement data based on the aging rate after the measuring device installed on the seabed creates the measurement data.

A flow rate measurement system being a flow rate measurement system that measures a flow rate of molten metal flowing through a hollow portion of a pipe includes an excitation coil that generates a magnetic field so as to intersect with the molten metal flowing through the hollow portion of the pipe; current supply processor circuitry that supplies an alternating exciting current to the excitation coil; a detector that detects a signal based on a magnetic field generated from the excitation coil by an alternating exciting current flowing through the excitation coil or a time variation in the magnetic field; and flow rate deriving processor circuitry that derives the flow rate of the molten metal based on the signal detected by the detector, wherein the pipe is arranged between the excitation coil and the detector, and a magnetic field that reaches the detector across the pipe is generated from the excitation coil.

The invention relates to the technical field of fluid mechanics measurement, and discloses Pitot tube measuring equipment facilitating angle adjustment in a pipeline and a flow velocity measuring method thereof.The Pitot tube measuring equipment comprises an angle adjusting mechanism, a depth adjusting mechanism is fixedly arranged on one side of the angle adjusting mechanism, and a measurement positioning mechanism is fixedly arranged on the other side of the angle adjusting mechanism; through the synergistic effect of the angle adjusting mechanism and the depth adjusting mechanism, aiming at the working conditions that the diameter is large, the length of a straight pipe section is smaller than 5D and fluid is not fully developed, accurate positioning of a Pitot tube in a pipeline can be ensured, and angle and depth adjustment of a probe can be realized, so that section flow velocity distribution is completely sampled and measured, multi-point measurement is performed, and the working efficiency is improved. The angle and depth of the Pitot tube are automatically adjusted, it is guaranteed that a proper distance is kept between the probe and the liquid level all the time, and even under the condition that the liquid level fluctuates, the continuity and reliability of measurement can be guaranteed, data breakpoints are avoided, and the device adapts to complex and changeable measurement environments.

The application discloses a kind of phase difference change rate measurement estimation method and device guided by time difference measurement, comprising: obtaining the two-way IQ signal of the same pulse signal of radiation source;Calculate the TDOA rough value of two-way IQ signal;Two-way IQ signal is cross-correlated operation, according to the cross-correlation operation result, curve fitting is carried out in the coordinate point near the TDOA rough value, to calculate TDOA accurate value;Calculate the ambiguous phase difference of two-way IQ signal, and use TDOA accurate value to the ambiguous phase difference is deambiguated, obtain accurate phase difference;Linear fitting is carried out to the accurate phase difference of multiple pulse signals in predetermined time period, and the slope of phase difference curve obtained by fitting is calculated, and the phase difference change rate is obtained.The phase difference change rate obtained by the application has high precision, can obtain unambiguous phase difference under certain conditions, and has small operation amount, is easy to engineering implementation, is especially suitable for real-time requirement high airborne electronic countermeasure reconnaissance equipment and warning equipment.

An error rate measurement apparatus includes: a symbol count unit that counts decision results as PAM symbols, and calculates a ratio of a determination frequency of a symbol level of 3 to a determination frequency of a symbol level of 2, and a ratio of a determination frequency of a symbol level of 1 to a determination frequency of a symbol level of 0; and a control unit that adjusts and controls Vth_Middle such that Vth_Middle has the voltage value of the average DC value voltage of the PAM4 signal measured, adjusts and controls Vth_Upper such that the determination frequency of the symbol level of 3 and the determination frequency of the symbol level of 2 have a desired ratio, and adjusts and controls Vth_Lower such that the determination frequency of the symbol level of 1 and the determination frequency of the symbol level of 0 have a desired ratio.