37 results about "Rate measurement" patented technology

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 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 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.

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.

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

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 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.

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 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.

To provide a flow rate measuring method and a flow rate measuring device capable of accurately measuring the flow rate of a fluid to be measured with a simple device configuration and with little risk of breakdown. [Solution] An acoustic matching layer 3 is provided between a pipe 1 through which the fluid to be measured flows and a piezoelectric vibrator 2, and as the flow rate of the fluid flowing in the pipe 1 changes, the thickness of the boundary layer on the inner wall of the pipe changes, and this change causes a change in the mechanical load on the piezoelectric vibrator 2, and the admittance A of the piezoelectric vibrator 2 is calculated as a result.The flow rate of the fluid flowing in the pipe 1 is calculated from the admittance A of the piezoelectric vibrator 2 based on the correlation between the admittance of the piezoelectric vibrator 2 and the flow rate of the fluid flowing in the pipe 1, which has been calculated in advance.

This abnormality detection system comprises: a water meter having a flow rate measurement unit that is provided in a flow path through which water circulates and measures the flow rate of water circulating through the flow path, and a communication unit that performs communication with a center server; and the center server having a general communication unit that performs communication with the communication unit, a judgment unit that identifies whether a time in which the flow rate measured by the flow rate measurement unit is a prescribed value or lower continues in detection target time bands, which include a time band in which past usage results are maximum and which are consecutive time bands, and judges that there is an abnormality when said time continues, and a notification unit that performs notification when the judgment unit judges that there is an abnormality.

A method for providing motion information of a UE in a wireless communication system. The method comprises initiating, in a first network node, of a first Doppler shift measurement concerning the UE. In the first network node, a transfer of requests for second Doppler shift measurement concerning the UE is initiated to second network nodes. Data representing the first Doppler shift measurement is obtained in the first network node. Data representing the second Doppler shift measurements is obtained in the first network node. An estimated motion, in more than one dimension, of the UE is determined in dependence of at least the obtained data representing the first Doppler shift measurement and the obtained data representing the second Doppler shift measurements. A method for assisting by the second network node, as well as network nodes performing the methods are also disclosed.

The present application relates to gas flow rate measurement, and particularly provides a method for obtaining working parameters of an ultrasonic flowmeter, comprising the following steps: A1. adjusting the working temperature and the working frequency of a first transducer at zero flow rate, corresponding multiple frequencies to the same temperature, and a second transducer outputting multiple parameters corresponding to the working temperature and the frequency; A2. obtaining an evaluation value according to the multiple parameters, the evaluation value corresponding to the working temperature and the frequency; A3. finding the maximum value in the multiple evaluation values corresponding to the same temperature, and the frequency corresponding to the maximum value being taken as the preferred frequency corresponding to the working temperature; and A4. establishing a data point and saving the same, the data point comprising the working temperature, the preferred frequency and the evaluation value. The present application has the advantages of accurate measurement and the like.

The application provides a body fat rate testing method and system, which comprises the following steps: after starting the test, placing a human body to be tested in a body fat tester, generating an excitation signal through electrodes and collecting a human body surface response signal in two postures of standing and lying, respectively, processing the response signal to obtain impedance amplitude and phase, judging whether the impedance amplitude and phase reach preset values, if yes, calculating body fat rate impedance Z1 and Z2 in the two postures, respectively, further calculating the final body fat rate according to Z1 and Z2, displaying the result through a display, and sending the result to a terminal device. The application can improve the accuracy and reliability of body fat rate measurement, has the characteristics of convenient operation and strong applicability, and can provide more accurate body fat rate evaluation for health management and medical monitoring.

1. The name of the design product: feed conversion rate measuring device. 2. The use of the design product: feed conversion rate measurement for livestock feeding. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

A flow rate measurement method for a spiral throttling component is provided, where a spiral flow channel is formed inside the spiral throttling component, and the method includes: introducing a calibration medium into the spiral throttling component, obtaining a plurality of flow rates Qv, diameter of the spiral flow channel d, effective length L of the spiral flow channel, pressure drop DP of a fluid flowing through the spiral flow channel, and density of fluid density ρ, figuring out a relationship of k=f(Qv, d, L, DP and ρ) to obtain a calculation formula of the flow rate Qv. Through the technical solution, a calculation formula for the spiral flow channels with different sizes can be obtained by using a small amount of calibrations, thereby avoiding mismatch of flow formulae when a size of the spiral flow channel changes.

The invention provides a body index measuring system based on multi-modal feature integrated expression, and belongs to the technical field of body index test.The body index measuring system comprises a controller, a display module, a body fat rate measuring unit, a blood pressure measuring unit, a heart rate measuring unit and a height measuring unit; a tester wears four wrist guard sensors on the wrists of the two hands and the ankles of the two feet respectively, and the wrist guard sensors detect the systolic pressure SBP and the diastolic pressure DBP of the tester all the time in the movement process of the tester; after the test is completed, a wireless data transmission module in the wrist guard sensor sends all data detected in the movement process to the controller; the defects that analysis data cannot be analyzed in real time and training guidance opinions cannot be given to testers in real time are overcome, meanwhile, the collected data are combined with a cloud database, and cloud computing and analysis of physical quality index evaluation are achieved.

This safety device (10A) for a flow rate measurement device comprises: internal communication units (12a, 12b) (the number of internal communication units may be one) that communicate with a flow rate measurement device for measuring the flow rate of a fluid; a safety assessment processing unit (11) that assesses the execution of a safety function by the flow rate measurement device by using output information from the flow rate measurement device, said output information being obtained through communication performed by the internal communication units (12a, 12b); and an authentication unit (13) that generates, as at least authentication information, an indicator value included in the output information from the flow rate measurement device, and, on the basis of the authentication information, assesses authentication with the flow rate measurement device with which communication is to be performed. This makes it possible, even with, e.g., a flow rate measurement device that does not have a safety function, to implement a safety function that is suitably reliable for the flow rate measurement device.

A fluid transit-based flow rate measurement tool for polymer injection wells. A sealing and refilling system for said tool. A flow rate measurement method that utilizes said tool. A signal processing method for the fluid transit-based flow rate measurement for polymer injection wells

A device (1) configured for determining the air permeability of a building and comprising an air moving device, AMD, (2), a pressure measuring device, PMD, (3), an air flow rate measuring device, AFRMD, (4), a temperature measuring device, TMD; (5) and a data processing device (6; 8), the device being configured to: conducting (401-403), using the AMD (2), PMD (3), AFRMD (4) and TMD (5), a series of flow rate measurements comprising m measurement points, each measurement point comprising a plurality of n measurements, and generating, using the data processing device (6; 8), an air leakage curve comprising a correlation coefficient, r2. A check of whether the correlation coefficient, r2, is larger than or equal to 0.98 is performed. If the correlation coefficient, r2, is not larger than or equal to 0.98 the series of flow rate measurements are repeated and a new check of the correlation coefficient, r2, is performed for all 2m measurement points. If the correlation coefficient, r2, is still not larger than or equal to 0.98, the measurement point comprising the largest deviation from an air leakage curve formed by the 2m measurement points is removed, and a new check of the correlation coefficient, r2, is performed for all remaining 2m-1 measurement points. If the correlation coefficient, r2, is larger than or equal to 0.98 the check is considered completed.