923results about "Volume measurement apparatus/methods" patented technology

The invention provides an underwater ultrasonic Doppler real-time analysis method and device based on a digital transducer, and relates to the technical field of data analys.The method comprises the steps that 1, multiple beams of directional ultrasonic waves are emitted into drilling fluid through a digital transducer array on the outer wall of a marine riser, echo signals reflected by gas-liquid two-phase flow are received, and the digital transducer array is used for receiving the echo signals; performing real-time digital conversion on the echo signal to generate an original digital signal containing phase and amplitude information; 2, Doppler frequency shift feature extraction is conducted on the original digital signals, and the real-time movement speed and direction of bubbles in the drilling fluid are determined by calculating the frequency deviation of reflected ultrasonic waves and transmitted ultrasonic waves. Through the digital transducer array and the ultrasonic Doppler technology, accurate measurement of motion parameters of bubbles in drilling fluid, real-time calculation of local gas content and early warning and grading response of gas cut are achieved, and the safety and the intelligent level of drilling operation are improved.

The invention relates to the technical field of alpine sand soil moisture leakage estimation technologies, and particularly discloses an alpine sand soil moisture leakage estimation method which comprises the following steps: S1, multi-source data acquisition: acquiring 0-110cm layered soil moisture content and temperature data by using a cold-resistant soil hydrothermal sensor array, and calculating the moisture content and temperature data of the layered soil; synchronously acquiring Sentinel-2 remote sensing data to extract vegetation coverage and land surface temperature, and recording regional freezing and thawing cycle times and biological crust coverage types; s2, key parameter inversion: calculating a permeability coefficient correction factor kFTC = alpha * N (1 / 2) through a multi-expression programming model based on the freezing and thawing cycle number N. According to the method for estimating the soil moisture leakage amount of the high and cold sand land, the limitation of a traditional model based on steady-state water flow and empirical parameters is broken through by quantifying the dynamic effect of freezing and thawing cycles on the porosity of a 30-80 mm soil layer and the water blocking effect of 23.41%-30.39% when the biological crust coverage degree exceeds 30%; and the influence of the low-temperature freezing and thawing cycle and the biological crust on the leakage mechanism of the high and cold sand land is accurately depicted.

The invention belongs to the field of atmospheric environment particulate matter monitoring, and particularly relates to an atmospheric environment salt mist concentration real-time monitoring device and method. The monitoring device comprises a computer control module, a container and a buoy, a conductivity electrode, a temperature sensor, a displacement sensor, an air inlet pipe and an air outlet pipe are integrated on the top of the container, and the air outlet pipe is connected with a reciprocating cylinder with a piston and a limit switch. The monitoring method comprises the following steps: calibrating the initial volume V < initial > of liquid and the volume V < initial > of a reciprocating cylinder; circularly collecting the conductivity k0 and k1, the temperature T0 and T1 and the displacement D and Dtotal of the buoy before and after ventilation; correcting the salt mass increment delta M through the dynamic volume, and finally outputting the salt mist concentration C; according to the invention, the defects of inaccurate ventilation volume metering, solution density change and interference of moisture in high-humidity air on concentration monitoring in the prior art are overcome, full-automatic continuous monitoring of the salt mist concentration is realized, the measurement error is effectively reduced, the measurement precision and the monitoring capability are remarkably improved, and the method has relatively good environmental adaptability.

An automated urinary output (“UO”)-measuring system includes a fluid container including a console coupled to one or more ultrasonic sensors and one or more accelerometers. The console includes a processor configured to receive accelerometer values from the one or more accelerometers, to determine an acceleration state of the fluid container, to activate the one or more ultrasonic sensors when the acceleration state of the fluid container is below a threshold, and to measure a volume of fluid in the fluid container when the acceleration state of the fluid container is zero. The system can further include a removable valve coupled to the fluid container and an attachment device including a pocket configured to accommodate the fluid container.

The invention provides a method for measuring the thermal runaway characteristic of a battery, which is used in the technical field of accurate measurement and thermal runaway testing of the volume, components and content of produced gas in the thermal runaway process of the battery, and the measurement method comprises the following steps: step 1, installing a test object in an experiment cabin, and carrying out pre-inflation replacement on the experiment cabin, the gas environment in the experiment module is a pre-inflation environment in a normal pressure state; 2, when the initial temperature value in the cabin is equal to the initial temperature of the surface of the battery, the battery is controlled to be heated or overcharged through an adapter on the experiment cabin, and the current temperature value in the cabin and the temperature value of the surface of the battery are recorded; and 3, recording the pressure value and the temperature value of the battery in the cabin in real time during thermal runaway, and calculating the gas production rate of the battery. According to the method, the gas production volume and components in thermal runaway are accurately measured, and the gas production rate and the total heat release amount in the thermal runaway period are calculated; the multi-dimensional characteristics of the thermal runaway behavior are obtained through one-time testing, and the thermal runaway safety of the battery is comprehensively evaluated.

The invention relates to the technical field of water level monitoring and early warning, in particular to an intelligent reservoir spillway water level monitoring and spillway early warning system, which comprises an anti-interference water level sensing module, an anti-siltation sensing array is arranged on a key section of a spillway, and the key section comprises a curve section and a gate section; the dynamic hydraulic twinning module is used for processing through a lightweight fluid network algorithm on the basis of the water surface transverse slope, the absolute water level and the gate vibration displacement in combination with a hydraulic BIM model; the edge cloud cooperative flow calculation module comprises an edge node and a cloud server; the risk self-adaptive early warning module is used for executing early warning when the calibrated real-time spilling volume breaks through a spilling threshold value; according to the method, the flow calculation error under the high turbulence working condition is remarkably reduced, the accuracy of flood discharge amount calculation is effectively improved, and it is ensured that flood discharge control is more accurate especially under the scene that the curve flow state is complex and the gate opening degree changes remarkably.

The invention relates to the technical field of ecological environment protection, in particular to a mangrove forest carbon sink monitoring and metering method based on an unmanned aerial vehicle, a radar and an AI technology, and the method comprises the steps: 1, obtaining the laser radar data of a mangrove forest through a laser radar carried by the unmanned aerial vehicle; step 2, acquiring elevation data in a mangrove forest vegetation layer area, and obtaining point cloud data after topographic error correction; 3, obtaining a multispectral image of the mangrove forest, and obtaining a multispectral data matrix; 4, identifying forest growth data features, constructing a mangrove forest carbon sink prediction model, and predicting the mangrove forest carbon sink amount; step 5, marking the image region with the NDVI value higher than a preset NDVI threshold value as a blade over-dense region; and according to the area of the overdense leaf region and the multispectral data matrix, calculating a light depression factor by using a photosynthetic depression factor formula, determining the carbon sink deviation of the overdense leaf region by using a regional carbon sink deviation formula, and obtaining a real carbon sink value of the mangrove forest according to a carbon sink calculated value obtained by prediction.

Disclosed are automated urinary output (“UO”)-measuring systems and methods. An automated UO-measuring system can include a container configured to collect a fluid such as urine. The container can include a console, one or more ultrasonic sensors coupled to the console for determining a fluid level within the container, one or more accelerometers coupled to the console for determining a near-zero acceleration state of the container for the determining of the fluid level within the container, and a valve configured to pass fluid therethrough by way of a fluid line coupled to the valve. The automated UO-measuring system can also include a container holder. The container holder can have a pocket for holding the container and a sleeve for securing the container to a user. A method of the automated UO-measuring system can include a method of using the automated UO-measuring system to collect and measure urine output of the user.

The invention discloses an intelligent monitoring method and system for an intelligent breather valve, and relates to the technical field of intelligent valve monitoring. Fitting a circulation volume curve based on the uploaded tank body pressure and circulation volume in combination with data of valves with different calibers; the opening state of the valve is judged according to the logic relation between the state of the proximity switch and the pressure of the tank body; and calculating the discharge amount or the suction amount based on the opening state of the valve and the circulation volume curve. According to the method, on the basis of the relation between the tank pressure and the circulation volume, the circulation volume curve is fitted through the quartic equation, errors of a traditional linear model are avoided, and the applicability to valves with different calibers is guaranteed. The opening state of the valve is judged according to the proximity switch state and pressure relation, and the defect that a traditional system is inaccurate or delayed in judgment of the valve state is overcome. By calculating the emission amount and the suction amount and combining VOCS concentration monitoring, emission of harmful gas is effectively reduced, and the environmental protection requirement is met.

The embodiment of the invention provides a material volume detection method, device and equipment for a quantitative bin and a detection system. The method comprises the following steps: acquiring at least two pieces of first point cloud information acquired by at least two laser radars respectively; carrying out fusion processing on the at least two pieces of first point cloud information to obtain fusion point cloud information of the materials in the quantitative bin; and determining volume information of the materials in the quantitative bin according to the fused point cloud information. According to the scheme, the problem that shielding exists in a single radar or manual inspection accuracy is poor is effectively solved, real-time monitoring of the material volume in the dynamic discharging process is achieved, and reliable data support is provided for quantitative control.

The invention discloses a shield deslagging volume dynamic detection method and a detection system thereof, and relates to the technical field of shield deslagging volume metering, the method comprises the following steps: arranging sound wave and vibration sensors, collecting sound vibration signals in a deslagging process, and calculating to obtain a first volume estimation value; collecting propelling attitude and conveyor rotating speed information, calculating an attitude correction coefficient and correcting the first estimated value to obtain a second estimated value; based on the dynamic image sequence at the deslagging window, extracting section and trajectory features to form a third volume estimation value; detecting the water content of the muck through a microwave sensor, calculating a water content correction coefficient, and compensating and correcting an image estimation result to obtain a fourth volume estimation value; and finally, carrying out weighted fusion on the second and fourth estimated values to obtain the final deslagging volume. According to the method, multi-source information of sound vibration, vision and water content is fused, the precision and robustness of slag discharge volume estimation are effectively improved, the method adapts to complex working condition changes, and the safety and efficiency of shield construction are guaranteed.

A measurable dispenser, comprising a first vessel for containing a substance to be dispensed, a second, measurable, vessel, mounted on the first vessel, a one-way valve whereby fluid from the first vessel can be caused to move into the second vessel and retained therein virtue of the one-way valve, and wherein the second vessel is provided with one or more indicia indicating measured amounts. A child-proof locking mechanism is also disclosed.

The invention provides a multi-sensor fusion ship berthing sensing auxiliary method and system, and the method comprises the steps: obtaining ship-borne laser radar point cloud data and ship-borne IMU odometer data, carrying out the point cloud motion compensation of the ship-borne laser radar point cloud data, and issuing the compensation; feature point clouds of the point cloud data are extracted, and shipborne laser radar point cloud data integrating the feature point clouds are issued; acquiring shipborne IMU data and shipborne laser radar odometer data, integrating the shipborne IMU data in real time, and issuing a shipborne IMU odometer; acquiring shipborne RTK data, detecting and judging a satellite signal state, and issuing shipborne RTK odometer data; acquiring shipborne RTK odometer data and shipborne laser radar point cloud data integrated with feature point cloud, calculating and optimizing the current state pose of a ship, issuing a shipborne laser radar odometer and reconstructing a three-dimensional navigation scene; a hardware external parameter calibration result is obtained, a ship-borne IMU odometer coordinate system, a ship-borne laser radar odometer coordinate system and a ship-borne RTK odometer coordinate system are unified, and a three-dimensional navigation scene and all odometer data are visualized.

The invention provides a pipettor automatic calibration positioning and accuracy evaluation method based on photoelectric sensing, and relates to the technical field of pipettor calibration, and the method comprises the following steps: arranging an annular photoelectric sensor array to collect interference fringe phase difference, liquid level reflection light signals and surface acoustic wave signals, and adopting a five-step phase shift method to obtain a three-dimensional displacement vector; dynamic calibration is achieved through liquid level morphological parameter analysis in combination with adaptive Kalman filtering, numerical simulation is conducted on the liquid drop forming process through time-frequency analysis and a fluid mechanics model, and finally the accuracy is evaluated through adaptive fuzzy reasoning and Bayesian estimation. According to the invention, high-accuracy automatic calibration and evaluation of the pipettor are realized.

The utility model belongs to the technical field of dosing devices, and particularly discloses a grating type high-precision injection pump which comprises a base plate, an injector fixing piece connected to the base plate, an injector installed on the injector fixing piece, a connecting piece, a controller, a grating ruler and an installation table connected to the base plate in parallel, a sliding plate is horizontally and slidably connected to the grating ruler, a sliding table is horizontally and slidably connected to the mounting table, the connecting piece is connected with the sliding plate and the sliding table, and a driving piece for driving the sliding table to slide is arranged on the mounting table; the tail end of a push rod of the injector is fixed on the connecting piece; a photoelectric sensing switch is connected to the base plate, a sensing piece is connected to one side of the connecting piece, the controller is electrically connected with the driving piece and the photoelectric sensing switch, and when the sensing piece moves to the photoelectric sensing switch and triggers the photoelectric sensing switch, the controller controls the sliding table to stop sliding, and at the moment, a push rod of the injector is pushed to the bottom of a needle cylinder of the injector. The sampling accuracy of the injection pump can be improved.

The invention discloses a method and equipment for detecting the stock of tobacco materials in a storage cabinet, a medium and a product. The method comprises the steps of constructing a current three-dimensional model of a material in a cabinet through a millimeter wave radar every time the material is detected to be discharged from the cabinet; in the discharging length direction, the materials in the cabinet are cut into a plurality of units in a simulated mode according to the standard span, and the volume of each unit is obtained through calculation in combination with the current three-dimensional model; and according to the volume of each unit, the total weight of the historical materials in the cabinet before the current material out-of-cabinet operation and the volume of each historical material unit, the weight of the out-of-cabinet materials in the current material out-of-cabinet operation and the weight of the remaining materials in the cabinet are calculated. By simulating and segmenting the materials in the cabinet according to the standard in the discharging direction, the actual distribution condition of the materials in the cabinet can be reflected in detail, the volume calculation precision is improved by combining a three-dimensional model constructed by the millimeter wave radar, the cabinet weight and the residual weight are calculated by utilizing historical data, the tobacco material stock metering precision is improved, and the tobacco stock metering precision is improved. And continuous processing and production of tobacco products are ensured.

An analytical instrument having a syringe size identification functionality includes a syringe pump with syringe having size Vsyri, an electric drive, a valve downstream of the syringe, a pressure sensor between the syringe and the valve, a constant downstream volume Vc and a processor configured to control the electric drive to move the plunger from L0 for detecting pressure P1 to a pressure detection position Ld for detecting P2 using the pressure sensor. The processor is configured to calculate the theoretical pressure P2* using a modified version of Boyle's law: P2*=P1(Vsyri+Vc) / (Vsyri(1−x)+Vc) and compare the theoretical pressure P2* with the detected pressure P2. When the theoretical pressure P2* equals the detected pressure P2, the analytical system is released for use.

A system including a pumping cassette having a first side including number of valve wells and second side having a fluid bus. Each side may be covered by a flexible membrane. A control surface having a number of valve well control stations actuatable with respect to the flexible membrane covering the first side of the cassette to open and close the valve wells when the cassette is mated against the control surface may be included. A pressure distribution assembly having a positive and negative pressure source and a number of pneumatic valves may be included. A controller configured to selectively actuate the number of pneumatic valves to apply pressure against the valve well control stations in a valve pumping sequence until a volume displaced through the fluid bus of the pumping cassette from a source to a destination is within a range of a target volume may be included.

The invention discloses a hematemesis volume intelligent determination method based on image identification and data analysis, and relates to the technical field of artificial intelligence auxiliary diagnosis, and the method comprises the following steps: constructing a spattering phase and spectrum combined observation baseline through a blood spattering imaging sequence, analyzing a light spot transient track through a time-frequency phase-locked calibration mechanism, extracting high-frequency reflection characteristics, and determining the hematemesis volume according to the high-frequency reflection characteristics. Generating a light spot prior set for interference identification; according to the distribution characteristics of the light spot prior set, multi-angle linear polarization image sampling and multi-interval adaptive exposure adjustment are executed, a stable coupling characteristic stack of color characteristics and texture characteristics is constructed, and a unified spectrum reference is provided for track identification processing. By introducing phase-spectrum combined observation, multi-angle polarization sampling and a dynamic regulation and control mechanism, a steady-state feature stack and a track topological graph are constructed, light spot interference stripping and volume fitting stabilization are achieved, the accuracy, real-time performance and robustness of hematemesis volume recognition are improved, and the method has remarkable clinical application value.

A gas leakage rate testing apparatus and method for a nonmetal hydrogen conveying pipeline, and a nonmetal hydrogen conveying pipeline volume expansion amount testing method. The gas leakage rate testing apparatus comprises: a test member (1), in which a test cavity (16) adapted to place a pipeline (31) to be tested is formed, wherein a sealed test cavity (11) is formed after said pipeline (31) is placed in the test cavity (16); a calibration cavity (21) selectively communicated with the test cavity (11); a first gas filling assembly (10) selectively communicated with the calibration cavity (21) so as to be adapted to inject gas of a first set pressure into the calibration chamber (21); a measurement unit (9) configured to measure the pressure and temperature in the calibration cavity (21) and the pressure and temperature in the test cavity (11), and calculate the volume of the test cavity (11); and a leakage rate test unit configured to acquire a pressure change value of the test cavity (11) within a preset time interval, and calculate the gas leakage rate of said pipeline (31). The technical problem that gas leakage rate testing is inaccurate due to the measurement of the volume of the test cavity (11) being difficult or inaccurate is solved. In the nonmetal hydrogen conveying pipeline volume expansion amount testing method, after gas leakage rate testing is ended, a measurement unit (9) calculates a second volume of a test cavity (11) on the basis of a second formula, and on the basis of the difference between a first volume and the second volume, calculates the volume expansion amount of a pipeline (31) to be tested.

A system and method for dispense characterization is disclosed. According to particular embodiments of the dispense characterization system and method, volumes of dispensed liquids can be determined. In more particular embodiments, additional characteristics, and combinations of characteristics of a liquid dispensing event can be determined. Examples of additional characteristics that can be determined include the shape of the dispensing event, the velocity of the dispensing event, and the trajectory of the dispensing event. The dispense characterization system and method can be employed in automated biological sample analysis systems, and are particularly suited for monitoring liquid reagent dispensing events that deliver liquid reagents to a surface of a microscope slide holding a biological sample.

The invention belongs to the technical field of space geodetic survey observation data inversion regional land water reserve change, and provides a method and related equipment for inversion of land water reserves based on a Slepian basis function combined with GNSS three-dimensional deformation, and the method comprises the steps: obtaining vertical and horizontal deformation observation values of GNSS through simulation; determining a Slepian primary function of the target area according to the boundary data and a preset maximum expansion order, and further determining a function relationship between a Slepian coefficient of GNSS three-dimensional deformation and a Slepian coefficient driven by mass load change; determining an observation equation according to the function relationship, and resolving the observation equation by adopting least square joint adjustment; and according to the Slepian coefficient driven by the mass load change, carrying out inversion on the regional land water reserves of the target region to obtain a regional land water reserve change result. The method has the beneficial effect that the precision and efficiency of regional land water reserve inversion are improved.

This present disclosure provides reliable methods and apparatus for delivering microdroplets containing an active pharmaceutical ingredient (API) to underlying substrates. A control system is provided to ensure that the API dosage is both accurate and repeatable.

The invention relates to the technical field of medical equipment, in particular to a reagent remaining amount management system and method and a sample analyser, the system comprises a display module, a remaining amount detection module and a control module, the display module is used for displaying first remaining amount data of a target reagent, and the first remaining amount data is used for representing remaining amount data of the target reagent at the last moment; the remaining amount detection module is used for performing real-time remaining amount detection on the target reagent to obtain second remaining amount data at the current moment; the control module is connected with the display module and the allowance detection module, and the control module is used for determining an allowance difference value according to the first allowance data and the second allowance data and determining the validity of the second allowance data according to the allowance difference value and preset fluctuation redundancy; and under the condition that the validity characterization is valid, the control module is used for updating the first margin data displayed by the display module according to the second margin data. False alarms caused by environmental factors can be reduced, and the accuracy of reagent residue management can be improved.

A system including a pumping cassette having a first side including number of valve wells and second side having a fluid bus. Each side may be covered by a flexible membrane. A control surface having a number of valve well control stations actuatable with respect to the flexible membrane covering the first side of the cassette to open and close the valve wells when the cassette is mated against the control surface may be included. A pressure distribution assembly having a positive and negative pressure source and a number of pneumatic valves may be included. A controller configured to selectively actuate the number of pneumatic valves to apply pressure against the valve well control stations in a valve pumping sequence until a volume displaced through the fluid bus of the pumping cassette from a source to a destination is within a range of a target volume may be included.

A gas permeation and leakage rate testing device and method for a non-metallic hydrogen transmission pipe. The device includes: a testing member formed with a testing cavity adapted to placing a to-be-tested pipe, and the testing cavity being formed with a sealed testing chamber after the to-be-tested pipe is placed therein; a calibration chamber selectively communicated with the testing chamber; a first gas-filling assembly selectively communicated with the calibration chamber to be adapted to filling a gas into the calibration chamber to a first set pressure; a measuring unit configured to measure pressures and temperatures in the calibration chamber and the testing chamber, and to calculate a calculated volume of the testing chamber; and a permeation and leakage rate testing unit configured to obtain a pressure change value of the testing chamber in a preset time interval and calculate a gas permeation and leakage rate of the to-be-tested pipe.

An injection device includes a cartridge configured to hold a volume of fluid, the cartridge having a proximal end and a distal end through which the fluid is dispensed; a stopper disposed in the cartridge and configured to move from the proximal end toward the distal end to cause the fluid to be dispensed through the distal end of the cartridge; and an electronic device disposed at the distal end of the cartridge, the electronic device including an emitter configured to transmit a signal toward the stopper, a receiver configured to receive reflections of the signal from the stopper, and a controller configured to wirelessly transmit data related to a position of the stopper in the cartridge.

The present invention relates to a method for determining a first fluid quantity in a second fluid quantity in a fluid-carrying element of a lithography system, comprising filling the fluid-carrying element with the second fluid quantity, performing a first rinsing process in the fluid-carrying element with the second fluid quantity for a first rinsing time at a first flow velocity along a first rinsing direction, detecting the first fluid quantity in the second fluid quantity, performing a second rinsing process in the fluid-carrying element with the second fluid quantity for the first rinsing time at the first flow velocity along a second rinsing direction which is opposite to the first rinsing direction, detecting the first fluid quantity in the second fluid quantity again, and determining the first fluid quantity based on the detection and the re-detection.

Systems and methods are disclosed for measuring the volume of liquid contained in a vessel. A sensor array comprising a plurality of sensors and a laser apparatus comprising one or more lasers can be positioned relative to each other such that lasers beams emitted from the laser(s) can be received by the sensor array. The vessel can be positioned such that each laser beam intersects the vessel at a certain predetermined height. A liquid level's height may be determined by the volume of liquid in the vessel. A refraction of a laser beam may be influenced by the presence or absence of liquid at that predetermined height, which could be the result of the liquid level's height being above or below that predetermined height. Readings from the sensor array may determine where refraction occurs, allowing ranges or values of the volume of liquid in the vessel to be extrapolated.

The utility model discloses a gas sampling device for environmental monitoring, which particularly relates to the field of environmental monitoring and comprises a sampling box, and an auxiliary sampling mechanism is mounted in the sampling box. By arranging the auxiliary sampling mechanism, the detection accuracy of environmental gas is improved, the whole device is placed in an environment needing to be monitored, gas in the environment needing to be monitored is sucked in through the sampling pipe by starting the pump body, the gas passes through the pump body and then is transmitted to the injection pipe through the corrugated pipe, and therefore the fixed disc is controlled to move downwards through the hydraulic rod; the injection pipe penetrates through the first butyl rubber plug and the second butyl rubber plug, gas is input into the gas storage tank to be stored, the gas is compressed through the hydraulic rod after being input, the injection pipe is arranged in the processing cavity, and meanwhile the gas meter automatically records and displays the volume or concentration of the gas in the gas storage tank. In the sampling and discharging process, multiple safety measures are taken, and the gas collection sealing effect is improved.