75results about "Liquid dispersion analysis" patented technology

A high-temperature and high-pressure core displacement test system includes a CT scanner configured to perform CT scanning, a gripper system configured to grip a core, a machine tool configured to move the gripper system to the CT scanner for CT scanning, a gripper load control system configured to heat and input a fluid into or / and receive a fluid output from the gripper system, and an acquisition and data analysis system configured to acquire a temperature and a pressure within a core gripping cavity, and detection data of the CT scanner and strain rosettes for analysis. According to the high-temperature and high-pressure core displacement test system and method, the strength of the gripper system in a high-temperature and high-pressure environment is improved, the projection performance of CT rays is ensured, and the optical fiber positioning precision and the core deformation measurement precision in a CT rapid scanning state are improved.

A light illumination and collection device (100; 200) for a micro-fluidic system comprises: a flow channel (110; 210) configured to extend in a first plane and allow flow of a sample through the flow channel (110; 210), a light source (120; 220) configured to transmit illumination light along an optical axis extending through a cross-sectional plane of the flow channel (110; 210) for causing light interaction between the illumination light and the sample to form sample information carrying light; a light collecting waveguide (130; 230) configured to extend in a second plane parallel to the first plane, wherein the light collecting waveguide comprises a light inlet (132; 232) configured to receive the sample information carrying light, wherein the light inlet (132; 232) and the light collecting waveguide (130; 232) are rotated in relation to a projection of a normal of the cross-sectional plane onto the second plane.

Method and apparatus to enable detection, count, and recordation of properties of particles of ultrafine particle sizes (<0.1 micron) as well as particle of larger sizes with the use of a condensation nuclei counter configured to enable multiple stages of volume expansion with the use of an array of fluidly connectable chambers.

The invention aims to provide a circulating high and low temperature liquid nitrogen and pulse water injection combined fracturing anti-reflection experimental device and a use method thereof, and belongs to the technical field of dust prevention and control. The experimental device comprises an active water preparation system, a pulse hydraulic system, a true triaxial loading system and a circulating liquid nitrogen stamping system; the active water preparation system comprises a liquid storage tank and a water tank, the pulse hydraulic system comprises a valve module, an information collection module and a water pump, the valve module comprises a ball valve, a one-way valve, a pressure release valve, a needle valve and a high-pressure electric ball valve, and the true triaxial loading system comprises a fracturing platform, an integrated operation table and a sound conversion module. The circulating liquid nitrogen stamping system comprises a gas storage module, a pressurization module and a liquid nitrogen stamping module. The problem that the effect of a coal seam single-phase fracturing method is poor is solved, the coal seam fracturing wetting period is shortened by simulating the fracturing process of pulse active water and circulating high and low temperature liquid nitrogen under different ground stresses, and dust and risk factors in the construction process are reduced.

The invention relates to a device (1) for measuring clouds and fog, comprising a first optical particle sensor (2) for the time-resolved measurement of at least one parameter of particles (3) in a first sample volume (4) of air from an environment (5), with a first volume flow measuring device (6) for determining a flow rate of the air through the first sample volume (4), wherein a computing device (7) is provided, by means of which a presence of a cloud and / or fog in the air can be determined from the at least one parameter.

A particulate matter detection device takes holographic images of flowing particulate matter concentrated by a virtual impactor, which selectively slows down and guides larger particles to fly through an imaging window. The flowing particles are illuminated by a pulsed laser diode, casting their inline holograms on a CMOS image sensor in a lens-free mobile imaging device. The illumination contains three short pulses with a negligible shift of the flowing particle within one pulse and triplicate holograms of the same particle are recorded at a single frame revealing different perspectives of each particle. A deep neural network classifies the particles based on the acquired holographic images. The device was tested using different types of pollen and achieved a blind classification accuracy of 92.91%. This mobile and cost-effective device weighs ˜700 g and can be used for label-free sensing and quantification of various bio-aerosols over extended periods.

Aerosol jet printing is a popular digital fabrication method for flexible and hybrid electronics, but it lacks sophisticated process control architectures that would enable more widespread adoption in manufacturing environments. An optical measurement system can be used to track the aerosol density upstream of the printhead. For example, the measured optical extinction combined with the aerosol flow rate, is directly related to deposition rate and accurately predicts functional properties, for example electrical resistance. This real-time system offers a compelling solution for process drift and batch-to-batch variability, a valuable tool for more fundamental studies of the process science, and a viable technology to support real-time control of aerosol jet printing.

Methods, apparatus, systems, and articles of manufacture are disclosed to measure fallout from a liquid flare burner. An example apparatus includes a device configurator to invoke a first control valve to isolate the liquid flare burner from a test fluid source, and invoke a second control valve to fluidly couple the liquid flare burner to a hydrocarbon source to generate unburned fallout droplets to be captured by first and second measurement surfaces in first and second measurement regions, a parameter calculator to calculate first and second fallout volumes associated with the unburned fallout droplets captured by the first and second measurement surfaces, and determine a fallout efficiency of the liquid flare burner based on the first and second fallout volumes, and a burner configurator to, in response to the fallout efficiency not satisfying a fallout efficiency threshold, adjust a configuration of the liquid flare burner based on the fallout efficiency.

In one aspect, a detection device is described, comprising: at least one sensor configured to detect a signal of a fluid sample comprising at least one analyte at a plurality of time points within a time period to generate a plurality of readouts of the signal each measured at one of the plurality of the time points within the time period; a first processor configured to generate a temporal profile of the readouts; a memory storing a database comprising a plurality of temporal profiles, each generated from a plurality of readouts of the signal of a known analyte measured by the sensor at the plurality of time points within the time period; a second processor configured to compare the generated temporal profile of the fluid sample with the database to determine the identity and / or concentration of the analyte in the fluid sample; wherein the first and second processors can be the same or different processors. Methods of using detection device for analyzing a fluid sample are also described.

The invention relates to a system (1) for producing bubbles (2) and / or drops (32), wherein the system (1) comprises a production device (3) for the bubbles (2) and / or drops (32) which has a nozzle (4) and a monitoring device (5) for monitoring a production operation of the production device (3).In order to produce bubbles (2) and / or drops (32) with a desired defined buoyancy neutrality and consistency, and to be able to selectively adjust the properties of the bubbles (2) and / or drops (32) during production, it is proposed that the monitoring device (5) includes a sound transducer (6) which is configured to generate signals depending on sound waves (7) produced by the production of the bubbles (2) and / or drops (32), wherein the monitoring device (5) includes an evaluation device (8) which is configured to evaluate the signals generated by the sound transducer (6) to determine a characteristic property of the bubbles (2) and / or drops (32) produced by the production device (3) and / or to determine a characteristic parameter of the production.

Systems and methods for improved fluid dispensing process control using a machine learning tool are disclosed. In an example method, successive portions of viscous fluid are dispensed by a dispensing device according to operating parameters to train a machine learning tool to associate defect classifications with images of dispensed portions and / or operating parameters associated with dispensing the dispensed portions. The trained machine learning tool is then used in a closed loop fashion in production to detect and correct for defects associated with the dispensed portions to improve quality and production efficiency.

The present invention relates to a system (1) and a method for coating a surface (3a) of an object (3) with a spray coating tool (2) spraying atomised coating particles (10) onto. A conditioning hood (20) is applied defining a spray chamber. In operation the spray coating tool (2) is mounted at a coating tool mounting end (21), and an output end (22) is positioned in proximity of the surface (3a) of the object (3) to be coated. The spray coating tool (2) is operated to spray atomised coating particles (10) which travel from the coating tool (2), through the spray chamber and the output end (22) to the surface (3a) of the object (3). A carrier gas is injected that in operation carries the atomised coating particles (10) to the surface (3a) of the object (3).

An aerosol generating device includes an aerosol generator configured to generate aerosols, and a potentiometric sensor configured to generate a signal based on an electric potential difference that changes according e to changes in components of aerosols generated by the aerosol generator.

A system comprises a particle sensor for a vehicle comprising a light source that directs a beam to an interrogation region outside the vehicle; and an optical detector that receives scattered or reflected light from an aerosol particle in the interrogation region. A processor performs a method for particle classification comprising measuring an optical response from a single particle in the interrogation region by identifying an optical response peak for scattered or reflected light from the interrogation region; measuring an amplitude and duration of the optical response peak; correcting the duration of the optical response peak based on a vehicle airspeed; based on the measured amplitude of the optical response peak, generating an expected optical response duration for water droplet using a calibration table; analyzing the measured optical response duration and the expected optical response duration to determine particle classification; and generating classification probabilities for one or more particle types.

A device for particle sensing (1) is disclosed. The device includes a sensor (2) including a bulk acoustic wave resonator (4) having a resonant frequency, an acoustic mirror (5) 5 arranged to support the resonator, and a heater (9) in thermal communication with the resonator such that a resonator temperature is based on a heater temperature. The device also includes circuitry (3) connected to the sensor. The circuitry comprises a driver (17) configured to drive the heater with a driver signal having a constant periodic cycle, and an oscillator (18) configured to generate an output signal indicative of the 10 resonant frequency. The resonant frequency is modulated by the resonator temperature.

A computer-assisted method to monitor soil porosity at a field study site using a portable apparatus, the method including: acquiring a soil sample using a first container; recording a first measurement of a mass and a volume of the soil sample; adding the soil sample to a second container until the soil sample is added in entirety, wherein the second container is pre-filled with a fluid medium, wherein the soil sample is added to the second container without causing soil clustering, and wherein a second measurement of a mass of the second container with the fluid medium is recorded; recording a third measurement of a mass of the second container with the soil sample fully immersed in the fluid medium; calculating a porosity of the soil sample based on the first, second, and third measurements; and providing, at the field study site, the calculated porosity of the soil sample.

The present invention relates to the technical field of coal mine gangue slurry filling, and provides a device and method for monitoring the diffusion range of slurry inside a goaf during the slurry filling process. Inside the goaf, the slurry seeps into the liquid collection cylinder body, and the change in the liquid density inside the cylinder body is monitored in real time through a liquid density monitoring device, and the monitoring data is transmitted to the ground data monitoring system in real time through an armored cable. The permeable slurry plate is installed on the top of the liquid collection cylinder body, effectively isolating the caving gangue in the goaf, and at the same time ensuring that the slurry enters the liquid collection cylinder body. The structure of the present invention is simple, easy to install, has a small engineering quantity, and high data information accuracy, avoiding the cumbersome work of drilling construction and sampling, and being able to master the diffusion range of the slurry in the goaf in real time while the slurry is being filled. The device is pre-buried behind the support in advance according to a certain row and column spacing along with the mining of the working face, and the armored cable for transmitting data is connected to the ground data monitoring system in advance by using the roadway of the working face, forming a slurry diffusion monitoring system.

A system and method for monitoring a flow of a fluid on an external surface of a structure in motion. The structure defines an external side comprising the external surface and an internal side opposed from the external side. The system comprises a fluid dispensing device located on the internal side of the structure. The fluid dispensing device comprises the fluid and a conduit that directs the fluid onto the external surface of the structure. An observation device is located on the external side of the structure. The observation device is positioned to observe the flow of fluid on the external surface of the structure.

The invention provides a correction device for a particle number measurement device, a correction program, a method for determining a particle size for correction, and a correction method for a particle number measurement device, which can reduce the influence of particle size change after classification and perform more accurate correction. A correction device (1) is provided with: a particle generation unit (10); an input unit (51); a particle classification unit (20); a particle detection unit (30); and a calculation unit (52) that, on the basis of a physical quantity factor that causes a change in the particle diameter in the particle detection unit (30) or the particle diameter distribution of the particles in the particle detection unit (30), determines the degree of change in the particle diameter of the particles reaching the particle detection unit (30) from the target particle diameter, and calculates the correction amount for the particle diameter extracted by the particle classification unit (20) on the basis of the degree of change. The particle diameter reaching the particle detection unit (30) becomes a target particle diameter. And a correction instruction unit (53) that instructs the particle classification unit (20) on the basis of the correction amount calculated by the calculation unit (52) so as to change the particle size of the particles extracted by the particle classification unit (20) to the particle size for correction.

This aerosol-generating device comprises: an aerosol generator for generating an aerosol; and a potential-difference sensor for generating a signal on the basis of potential difference that changes in response to variations in the components of the aerosol generated by the aerosol generator.

A system comprises a particle sensor for a vehicle comprising a light source that directs a beam to an interrogation region outside the vehicle; and an optical detector that receives scattered or reflected light from an aerosol particle in the interrogation region. A processor performs a method for particle classification comprising measuring an optical response from a single particle in the interrogation region by identifying an optical response peak for scattered or reflected light from the interrogation region; measuring an amplitude and duration of the optical response peak; correcting the duration of the optical response peak based on a vehicle airspeed; based on the measured amplitude of the optical response peak, generating an expected optical response duration for water droplet using a calibration table; analyzing the measured optical response duration and the expected optical response duration to determine particle classification; and generating classification probabilities for one or more particle types.

A system monitors properties of an aerosolized-ink stream that includes detectors and light sources configured to emit light of different wavelengths. The system includes a cell that includes flow axis that allows the aerosolized-ink stream to pass through the inner cavity formed in continuity with optical channels extending radially from the inner cavity along polar angles. The cell has an input positioned on a forward-scattering axis that coincides with an axis of one of the input light channels, with some forming azimuthal angles relative to a forward-scattering axis. A data acquisition module acquire scattering and / or absorption signals that are processed to identify relationships and / or against a model of multiple plurality of properties of the aerosolized-ink stream by a controller. The controller initiates corrective measures in response to the detected relationships and / or processed properties.

An example system is configured to estimate a concentration of an airborne glycol in an environment. The system includes a processor, a display device, a first sensor configured to generate first sensor data representing a concentration of particles in the environment having a diameter less than a threshold diameter, a second sensor configured to generate second sensor data representing a temperature of the environment, and a third sensor configured to generate third sensor data representing a humidity of the environment. The processor is configured to receive the first sensor data, the second sensor data, and the third sensor data: estimate, based on the first sensor data, second sensor data, and the third sensor data, the concentration of the airborne glycol in the environment; and present, using the display device, a visual indication representing the concentration of the airborne glycol in the environment.

The diagnostic device and method for detecting a respiratory infection in a subject include a particle detection unit that acquires data regarding particles contained in the exhaled breath from the subject's airway, and a processing unit that determines a respiratory infection based on the data acquired from the particle detection unit and subject-related characteristics.

To provide an optical air data system for measuring aerosol and molecular scattering of light.SOLUTION: An optical air data system 110 performs one or more signal analysis and data fusion methods comprising: (a) determining aerosol and / or molecular concentration from received data, modifying a data analysis algorithm to optimize any remaining unknown parameters, and outputting enhanced air data parameters; (b) determining aerosol concentration from the received data, dynamically optimizing hardware settings in the air data system to enhance a signal level and avoid system saturation, and outputting enhanced air data parameters; or (c) determining aerosol and / or molecular concentration from the received data, estimating a confidence level of an air data algorithm, verifying optical health of the air data system, and reporting the optical health to a user.SELECTED DRAWING: Figure 1A

The invention relates to a method and a device for enlarging aerosol particles, to use of an operating medium for producing an oversaturated vapour, and to a cartridge. In a method of enlarging particles (1) of an aerosol (2), the particles (1) come into contact with an oversaturated vapour (3). In order to produce the oversaturated vapour (3), a carrier gas is heated and then brought into contact with an operating medium (35). In this way, the particles can be activated very quickly.

The invention relates to a method and a device adapted for the selective counting of individual respiratory droplets and particles comprising water within ambient air. The method is based on a planar capacitive sensor to which droplets and particles are led with a nozzle, which increases their velocity. Entering the electric field of the capacitive sensor, the respiratory droplets and particles change the sensor's capacitance. Because the respiratory droplets and particles containing water exhibit a notably distinct dielectric constant compared to other airborne particles and the air itself, they are counted in a selective way independently on other particulate matter air pollutants. The alteration in the capacitance is converted into an electrical signal, which is measured by known methods.

A method of analysing a spray of liquid (8) from a nozzle comprises: receiving a fluorescent liquid composition comprising fluorophores of a first type and fluorophores of a second type, wherein the fluorophores of the first type are excitable by absorption of electromagnetic radiation in a first absorption wavelength band and are configured to emit electromagnetic radiation, following excitation, in a first emission wavelength band, and wherein the fluorophores of the second type are excitable by absorption of electromagnetic radiation in a second absorption wavelength band and are configured to emit electromagnetic radiation, following excitation, in a second emission wavelength band, wherein the first emission wavelength band overlaps with the second absorption wavelength band; ejecting the fluorescent liquid composition from the nozzle to generate a spray; projecting, within a sheet plane, a sheet of light (5) through the spray, wherein the light comprises wavelengths within the first absorption wavelength band and within the second absorption wavelength band; capturing, in a side scattering orientation, light scattered by the spray within the sheet plane and determining a first intensity corresponding to an intensity of the captured light within the first emission wavelength band and a second intensity corresponding to an intensity of the captured light within the second emission wavelength band; and determining a characteristic of the spray based on the first intensity and the second intensity.

An optical sensor (10) for an aircraft includes two detectors (14, 16), a light source (12), and a controller (100). The detectors (14, 16) are oriented along detector paths and have tilt angles and fields of view. The detectors (14, 16) are configured to detect light reflected from an illumination volume and to generate detector signals that correspond to intensities of detected light. The tilt angles are equal such that each detector (14, 16) is oriented in an opposite direction within a plane containing a light source path and the detector paths. The light source (12) is oriented along the light source path and is configured to illuminate the illumination volume which overlaps with the fields of view within a predetermined distance range. The controller (100) is configured to receive the detector signals, detect whether a cloud is present based upon the detector signals, determine a cloud phase, and calculate a density of the detected cloud.