WO2021075309A1 - 粒子群特性測定装置、粒子群特性測定方法、粒子群特性測定装置用プログラム、粒子径分布測定装置及び粒子径分布測定方法 - Google Patents
粒子群特性測定装置、粒子群特性測定方法、粒子群特性測定装置用プログラム、粒子径分布測定装置及び粒子径分布測定方法 Download PDFInfo
- Publication number
- WO2021075309A1 WO2021075309A1 PCT/JP2020/037815 JP2020037815W WO2021075309A1 WO 2021075309 A1 WO2021075309 A1 WO 2021075309A1 JP 2020037815 W JP2020037815 W JP 2020037815W WO 2021075309 A1 WO2021075309 A1 WO 2021075309A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- particle
- particle group
- time
- swarm
- group
- Prior art date
Links
- 239000002245 particle Substances 0.000 title claims abstract description 589
- 238000005259 measurement Methods 0.000 title claims abstract description 28
- 238000009826 distribution Methods 0.000 title claims description 48
- 238000000691 measurement method Methods 0.000 title claims description 4
- 238000000605 extraction Methods 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 24
- 230000008569 process Effects 0.000 claims abstract description 11
- 239000000725 suspension Substances 0.000 claims description 41
- 238000003384 imaging method Methods 0.000 claims description 37
- 239000002612 dispersion medium Substances 0.000 claims description 23
- 239000000284 extract Substances 0.000 claims description 12
- 230000001678 irradiating effect Effects 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000005457 optimization Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 abstract description 4
- 230000002123 temporal effect Effects 0.000 abstract 1
- 238000003860 storage Methods 0.000 description 16
- 230000010365 information processing Effects 0.000 description 12
- 230000006870 function Effects 0.000 description 9
- 239000000843 powder Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000010191 image analysis Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000003708 edge detection Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000003703 image analysis method Methods 0.000 description 1
- 238000007561 laser diffraction method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000790 scattering method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means
- G01N15/0227—Investigating particle size or size distribution by optical means using imaging; using holography
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means
- G01N15/0211—Investigating a scatter or diffraction pattern
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0205—Investigating particle size or size distribution by optical means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/10—Investigating individual particles
- G01N15/14—Optical investigation techniques, e.g. flow cytometry
- G01N15/1429—Signal processing
- G01N15/1433—Signal processing using image recognition
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/10—Investigating individual particles
- G01N15/14—Optical investigation techniques, e.g. flow cytometry
- G01N15/1456—Optical investigation techniques, e.g. flow cytometry without spatial resolution of the texture or inner structure of the particle, e.g. processing of pulse signals
- G01N15/1459—Optical investigation techniques, e.g. flow cytometry without spatial resolution of the texture or inner structure of the particle, e.g. processing of pulse signals the analysis being performed on a sample stream
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N2015/0042—Investigating dispersion of solids
- G01N2015/0053—Investigating dispersion of solids in liquids, e.g. trouble
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N2015/0294—Particle shape
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/10—Investigating individual particles
- G01N15/14—Optical investigation techniques, e.g. flow cytometry
- G01N2015/1493—Particle size
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/10—Investigating individual particles
- G01N15/14—Optical investigation techniques, e.g. flow cytometry
- G01N2015/1497—Particle shape
Definitions
- the present invention is for a particle group characteristic measuring device, a particle group characteristic measuring method, and a particle group characteristic measuring device for measuring time fluctuations in the characteristics (also referred to as particle group characteristics) of a particle group composed of a plurality of particles dispersed in a dispersion medium. It relates to a program, a particle size distribution measuring device, and a particle size distribution measuring method.
- the state of the particle group dispersed in the dispersion medium changes with time due to the dispersion and aggregation of the particles. Therefore, for example, when measuring the particle size distribution of a particle group, the state of the particle group is monitored by measuring the time variation of the particle group characteristics such as the representative particle size of the particle group in advance. There is a desire to measure the particle size distribution after the particle size is in the desired state.
- a laser diffraction / scattering type measuring device that detects the light intensity of diffracted light or scattered light generated by irradiating a particle group with laser light may be used to measure the time variation of such particle group characteristics.
- Patent Document 1 a laser diffraction / scattering type measuring device that detects the light intensity of diffracted light or scattered light generated by irradiating a particle group with laser light may be used to measure the time variation of such particle group characteristics.
- this laser diffraction / scattering method has a problem that it is difficult to measure the time variation of the particle group characteristics over a long period of time because it is necessary to perform blank measurement before measurement due to the problem of laser stability.
- the captured image obtained by imaging the particle group irradiated with light is processed, and the particle information (also referred to as particle information) reflected in the captured image is extracted to obtain the particle group characteristics such as the representative particle size. It is considered to measure the time variation of the particle group characteristics by using a so-called image analysis type device for calculation. Since this image analysis type device does not require blank measurement, it is possible to measure the time variation of particle swarm characteristics over a long period of time.
- the present invention has been made in view of the above problems, measures the time variation of the particle swarm characteristics based on the captured image, and can reduce the statistical error included in the calculated particle swarm characteristics. Moreover, it is a main object to provide a particle swarm property measuring device which can easily grasp the time fluctuation.
- the particle group characteristic measuring apparatus measures the time variation of the particle group characteristics, which is the characteristic of the particle group composed of a plurality of particles dispersed in the dispersion medium, and images the particle group.
- a particle information extraction unit that processes a captured image captured by the imaging unit and extracts particle information that is information on particles reflected in the captured image, and the particle group at a plurality of time points in chronological order.
- the particle group characteristic calculation unit includes a particle group characteristic calculation unit that calculates the characteristics based on the particle information extracted from the plurality of captured images captured before each time point, and the particle group characteristic calculation unit is the particle at each time point.
- the group characteristics are based on the plurality of captured images used for calculating the particle group characteristics at a time point earlier than that and the particle information extracted from the plurality of captured images in which the imaging time zones partially overlap. It is characterized by calculating.
- the particle group characteristics at each time point are calculated based on the particle information extracted from a plurality of captured images, the particle group characteristics are calculated based on the particle information extracted from one captured image.
- the statistic of particle information can be increased as compared with the case of calculation, and the statistical error included in the calculated particle group characteristics can be reduced.
- the time required to secure the number of particle information required to reduce the statistical error to the permissible range can be shortened, and the particle swarm characteristics at each time point can be calculated in a short time. As a result, it is possible to easily grasp the time fluctuation while reducing the statistical error included in the calculated particle swarm characteristics.
- the particle group characteristic calculation unit uses the particle group characteristics at each time point to calculate the particle group characteristics at the time immediately before the plurality of captured images and a part thereof. It is preferable to calculate based on the particle information extracted from the plurality of captured images in which the above are duplicated. In this way, the particles extracted from the plurality of captured images in which the particle swarm characteristics at each time point partially overlap with the plurality of captured images used for calculating the particle group characteristics at the previous time point. It is calculated based on the information, that is, the particle swarm characteristics at each time point are calculated by adding a part of the particle information used for calculating the particle group characteristics at the previous time point, so that the adjacent time points are calculated. The amount of change in particle swarm characteristics between them can be reduced. As a result, by reducing the amount of change in the particle group characteristics between adjacent time points, the particle group characteristics at each time point can be smoothed and its time variation can be dramatically grasped.
- the particle group characteristic calculation unit calculates the particle group characteristic based on a plurality of the particle information including the particle information extracted most recently at each time point. In this way, the particle swarm characteristics calculated at each time point can reflect the latest state of the particle group at each time point.
- the particle swarm property calculation unit there may be one that calculates the particle swarm characteristics at each time point based on the particle information extracted from a certain number of captured images in which the order of imaging is continuous. ..
- the particle group characteristic measuring device further includes a calculation command unit that outputs a calculation command signal for commanding the calculation of the particle group characteristics to the particle group characteristic calculation unit, and the calculation command unit calculates the calculation at predetermined time intervals. It is preferable to output a command signal. By doing so, it is possible to grasp the fluctuation of the particle swarm characteristics at regular time intervals, so that the user convenience can be improved.
- the particle group characteristic measuring device further includes a calculation command unit that outputs a calculation command signal for commanding the calculation of the particle group characteristics to the particle group characteristic calculation unit, and the calculation command unit is predetermined by the particle information extraction unit. It is preferable to output the calculation command signal every time the particle information is extracted from the number of captured images. By doing so, it is possible to grasp the fluctuation of the particle swarm with respect to the time when the particle swarm is imaged, so that the user convenience can be improved.
- the particle swarm property measuring device further includes a display control unit that displays the calculation result at each time point calculated by the particle swarm optimization unit in real time. In this way, the user can confirm the time variation of the particle swarm characteristics in real time.
- the particle group characteristic measuring device calculates a plurality of the particle group characteristics having different particle group characteristic calculation units, and it is preferable that the display control unit displays the plurality of the particle group characteristics on the same screen. In this way, it is possible to grasp the time variation of the state of the particle group by displaying a plurality of different types of particle group characteristics on the same screen. For example, when displaying the representative particle diameter D 50 and the representative aspect ratio as the characteristics of a plurality of particle groups, if the value of the representative particle diameter D 50 decreases with time and the aspect ratio increases with time, the particles are dispersed. It is possible to understand that the particles that are being used may be broken or deformed.
- a representative particle size of a plurality of particles constituting the particle group can be mentioned.
- the particle group characteristic measuring method of the present invention is a method of measuring the time variation of the particle group characteristic, which is the characteristic of the particle group composed of a plurality of particles dispersed in the dispersion medium, and is an imaging step of imaging the particle group.
- the particle information extraction step of processing the captured image captured in the imaging step and extracting the particle information which is the information of the particles reflected in the captured image, and the particle group characteristics at a plurality of time points along the time series.
- a particle group characteristic calculation step calculated based on the particle information extracted from a plurality of captured images captured before each time point is provided, and in the particle group characteristic calculation step, the particle group at each time point is provided.
- the characteristics are based on the plurality of captured images used for calculating the particle group characteristics at a time point earlier than that and the particle information extracted from the plurality of captured images in which the imaging time zones partially overlap. It is characterized by calculating. With such a particle swarm property measuring method, it is possible to obtain the same effects as those of the particle swarm property measuring device of the present invention described above.
- the program for the particle group characteristic measuring device of the present invention is for a particle group characteristic measuring device that measures the time variation of the particle group characteristic, which is the characteristic of the particle group composed of a plurality of particles dispersed in the dispersion medium.
- a particle group characteristic measuring device measures the time variation of the particle group characteristic, which is the characteristic of the particle group composed of a plurality of particles dispersed in the dispersion medium.
- an imaging unit that captures the particle group
- a particle information extracting unit that processes the captured image captured by the imaging unit and extracts particle information that is information on the particles reflected in the captured image.
- the particle group characteristics at a plurality of time points along the time series are calculated based on the particle information extracted from the plurality of captured images captured before each time point.
- the particle group characteristics are combined with the plurality of captured images used for calculating the particle group characteristics at a time point earlier than that and the particle information extracted from the plurality of captured images in which the captured time zones partially overlap. It is characterized by having a computer exert a function as a particle group characteristic calculation unit that is calculated based on the above. With such a program for a particle swarm property measuring device, the same effect as that of the particle swarm property measuring device of the present invention can be obtained.
- the particle size distribution measuring device of the present invention measures the particle size distribution of a group of particles composed of a plurality of particles dispersed in a dispersion medium, and the dispersion medium and the particles are mixed to form a suspension.
- the present invention includes the above-mentioned particle group characteristic measuring device of the present invention, which measures the time variation of the characteristics of the particle group in the suspension flowing through the circulation system, and an optical measuring system for measuring the particle size distribution. It is characterized by.
- the particle group characteristics in the suspension flowing through the circulatory system are monitored by the particle group characteristic device of the present invention described above, so that the time variation of the particle group characteristics in the circulatory system can be measured. Easy to grasp. Therefore, it is possible to start the measurement of the particle size distribution using the optical measurement system at a more appropriate timing as compared with the conventional case.
- the particle size distribution measuring method of the present invention is a method of measuring the particle size distribution of a group of particles composed of a plurality of particles dispersed in a dispersion medium, and the dispersion medium and the particles are mixed to form a suspension. Time for the characteristics of the particle group in the suspension to be circulated by the circulation step of circulating the suspension between the mixing tank and the measurement cell and the particle group characteristic measurement method of the present invention described above.
- the time variation of the particle swarm characteristics is measured based on the captured image of the particle swarm, and the statistical error included in the calculated particle swarm characteristics can be reduced. Moreover, it is possible to provide a particle swarm property measuring device that makes it easy to grasp the time fluctuation.
- the particle group characteristic measuring device 200 of the present embodiment constitutes a part of the particle size distribution measuring device 100 for measuring the particle size distribution of a particle group composed of a plurality of particles dispersed in a dispersion medium.
- the overall configuration of the particle size distribution measuring device 100 will be described first, and then the configuration of the particle group characteristic measuring device 200 will be described.
- the particle size distribution measuring device 100 measures the particle size distribution of the particle group by detecting the light intensity of the scattered light generated when the particle group is irradiated with the laser light. Specifically, as shown in FIG. 1, the particle size distribution measuring device 100 connects the sample charging tank 111 and the laser diffraction cell 112 via the circulation flow path 113, and disperses the powder sample in the dispersion medium. Optical to measure the particle size distribution of the particle group based on the circulating system 11 that circulates the suspended suspension and the scattered light generated by irradiating the suspension flowing in the laser diffraction cell 112 with laser light.
- the sample charging tank 111 is a suspension made by mixing a powder sample containing a plurality of charged particles and a dispersion medium (for example, pure water or alcohol) for dispersing the powder sample. By mixing the powder sample and the dispersion medium, the particles contained in the powder sample are dispersed in the dispersion medium to form a particle group.
- a dispersion medium for example, pure water or alcohol
- the circulation system 11 is provided with a centrifugal circulation pump 114 for forcibly circulating the suspension so that the suspension mixed in the sample charging tank 111 can be sent out to the laser diffraction cell 112. It has become.
- the laser diffraction cell 112 is of a so-called flow type, and is configured so that a suspension introduced from the outside can be liquid-tightly circulated between a pair of light-transmitting plates facing each other and led out to the outside. ..
- the laser beam is irradiated so as to go from the one light-transmitting plate side to the other light-transmitting plate side.
- the optical measurement system 12 includes a laser light source 121 that irradiates the suspension in the laser diffraction cell 112 with laser light, and a plurality of photodetectors that detect the intensity of scattered light generated by the irradiation of the laser light according to the scattering angle.
- a device 122 and a first information processing device 123 that calculates a particle size distribution of a particle group based on light intensity signals output by a plurality of photodetectors 122 are provided.
- the first information processing apparatus 123 is a general-purpose or dedicated computer provided with a CPU, a memory, an input / output interface, and the like, and cooperates with the CPU and peripheral devices according to a predetermined program stored in a predetermined area of the memory. By working, at least the function as the particle size distribution calculation unit 123a is exhibited.
- the particle size distribution calculation unit 123a calculates the particle size distribution of the particle group in the suspension based on the light intensity signals output from the plurality of photodetectors 122. Specifically, the scattering pattern consisting of the scattering angle and the intensity of the scattered light at the scattering angle indicated by the light intensity signals output from the plurality of light detectors 122, the Mie scattering theory, the Rayleigh scattering theory, the Fraunhofer diffraction theory, etc. The particle size distribution corresponding to the scattering pattern is calculated based on a predetermined theoretical calculation formula derived from.
- the particle swarm property measuring device 200 measures the time variation of particle swarm characteristics by processing an captured image obtained by continuously imaging a particle swarm in a suspension. Specifically, the particle group characteristic measuring device 200 irradiates the image acquisition cell 21 connected to the circulation flow path 113 and the suspension flowing inside the circulation flow path 113 and the suspension in the image acquisition cell 21 with light.
- a second information processing apparatus that processes an image acquisition light source 22 to be imaged, an image pickup unit 23 that images a suspension in an image acquisition cell 21, and an image captured by the image pickup unit 23 to calculate particle group characteristics. 24 and a display 25 for displaying the calculation result of the second information processing apparatus 24.
- the image acquisition cell 21 is a so-called flow type, and allows a suspension introduced from the outside to be circulated between a pair of translucent plates facing each other so that the suspension can be led out to the outside. Light is emitted from one light-transmitting plate toward the other light-transmitting plate.
- the image acquisition light source 22 irradiates the suspension in the image acquisition cell 21 with parallel light, and condenses an LED device such as a white LED and the light emitted from the LED device. It is equipped with a condensing mechanism such as a lens that produces parallel light.
- the imaging unit 23 continuously images a group of particles in the suspension flowing in the image acquisition cell 21, and sequentially outputs captured image data showing the captured image (see FIG. 2) to the second information processing apparatus 24. Is what you do.
- the image pickup unit 23 includes an image pickup element such as a color or monochrome CCD or CMOS image sensor.
- the imaging unit 23 of the present embodiment is configured to receive an imaging command signal commanding imaging from the second information processing device 24 and to use this as a trigger to image a group of particles in the suspension.
- the imaging unit 23 is configured to image the particle group in the suspension once each time it receives an imaging command signal and output the image.
- the second information processing device 24 is a general-purpose or dedicated computer equipped with a CPU, a memory, an input / output interface, and the like. As shown in FIG. 3, this information processing device cooperates with a CPU and peripheral devices according to a predetermined program stored in a predetermined area of a memory, thereby forming a particle information extraction unit 241 and a storage unit 242, and particle group characteristics. At least the functions of the calculation unit 243, the calculation command unit 244, and the display control unit 245 are exhibited.
- the particle information extraction unit 241 receives the captured image data output from the imaging unit 23, sequentially processes the captured image indicated by the captured image data, and extracts the particle information which is the information of the particles reflected in the captured image. .. Specifically, the particle information extraction unit 241 refers to an image such as smoothing, noise removal, separation, circular separation, thinning, binarization, enhancement and / or edge detection with respect to the captured image indicated by the captured image data. The processing is performed, and the particle information of each of the particles (specifically, the so-called in-focus particles within a predetermined depth of field) reflected in the captured image is extracted.
- particle information is a physical property value of each particle constituting the particle group, for example, particle diameter (diameter equivalent to an area circle), aspect ratio, major axis length, minor axis length, maximum distance, and perimeter. , Area (actual measurement ⁇ m 2 ), area (pixel: number of pixels in the particle), roundness, convex flatness, strength of imaged pixel, etc., but are not limited to this.
- the particle information extraction unit 241 When the particle information extraction unit 241 receives the captured image data, it immediately processes the captured image and extracts individual particle information. Then, particle data indicating particle information of individual particles extracted from one captured image is stored in a storage unit 242 set in a predetermined area of a memory as one particle data group. The particle information extraction unit 241 stores the new particle data group extracted by processing the captured image data each time it is received in the storage unit 242 separately from the particle data group stored so far.
- the particle information extraction unit 241 determines the particle size of each of the three particles from the captured image. Extract as particle information. Then, the particle data relating to the three extracted particle diameters is stored in the storage unit 242 as the nth particle data group.
- the particle information extraction unit 241 is configured to immediately output an imaging command signal to the imaging unit 23 when the particle information has been extracted from one received captured image.
- the particle information extraction unit 241 of the present embodiment is configured to erase the captured image data indicating the captured image without storing it in the storage unit 242 when the particle information has been extracted from the captured image. As a result, the amount of data stored in the storage unit 242 can be reduced.
- the storage unit 242 is configured to store a predetermined upper limit number of particle data groups. When the number of stored particle data groups reaches the upper limit, the storage unit 242 deletes one particle data group having the oldest stored order when it receives a new particle data group. It is configured.
- the particle swarm property calculation unit 243 calculates the particle swarm characteristics at a plurality of time points along the time series based on the particle information extracted from the plurality of captured images captured before each time point.
- the particle group characteristic calculation unit 243 refers to the particle data group stored in the storage unit 242, and based on the particle information included in the plurality of particle data groups extracted before each time point, each time point. It is configured to calculate the particle group characteristics in.
- This "particle group characteristic” means a representative value of particle information of individual particles constituting the particle group. For example, when the particle information is "particle size", the particle group characteristic is "representative particle size (D 10 , D 50, D 90, etc.)".
- the particle swarm property calculation unit 243 of the present embodiment partially overlaps the particle swarm characteristics at each time point with the plurality of particle data groups used for calculating the particle swarm property at least one time point before the time point. It is calculated based on the particle information contained in a plurality of particle data groups. That is, it can be said that the particle group characteristic calculation unit 243 is configured to calculate the particle group characteristics at the next time point by adding the particle information used for calculating the particle group characteristics at the previous time point.
- the particle group characteristic calculation unit 243 includes a plurality of particle group characteristics at each time point, including a particle data group extracted most recently at the time immediately before the time point and a particle data group having a newer extraction order. Calculated based on the particle data group. More specifically, the particle group characteristic calculation unit 243 calculates the particle group characteristics based on the particle information included in the plurality of particle data groups including the particle data group extracted most recently at each time point. Furthermore, the particle swarm characteristics at each time point are calculated based on the particle information contained in a certain number of particle data groups whose extraction order is continuous. Here, the number of particle data groups to be referred to at each time point can be arbitrarily set by the user.
- the particle group characteristic calculation unit 243 extracts the particle group characteristics at a certain time point P most recently. It is calculated based on 20 consecutive particle data groups that trace back to the n-19th particle data group from the nth particle group information data group. Then, the particle group characteristic calculation unit 243 traces the particle group characteristics at the next Q time point from the most recently extracted n + 6 particle group information data group to the n-13 particle data group of 20 consecutive particles. Calculate based on the data group.
- the particle swarm property calculation unit 243 calculates the particle swarm characteristics at each time point in a histogram (horizontal axis: class) based on a plurality of particle information included in the plurality of particle data groups. , Vertical axis: frequency), and the particle swarm characteristics are calculated based on the histogram.
- the particle swarm property calculation unit 243 may be configured to calculate a plurality of different particle swarm characteristics at each time point.
- the particle group characteristic calculation unit 243 may calculate a plurality of particles of the same type such as representative particle diameters D 10 , D 50, and D 90 at each time point, and may calculate representative particle diameter, aspect ratio, and roundness. You may calculate the characteristics of different kinds of particle swarms such as.
- the particle swarm property calculation unit 243 calculates the particle swarm property at each time point, it immediately outputs the particle swarm property data indicating this. At the same time, the histogram data showing the histogram calculated for the particle swarm characteristics may be output.
- the calculation command unit 244 outputs a calculation command signal for commanding the calculation of the particle group characteristics to the particle group calculation unit 243.
- the calculation command unit 244 of the present embodiment is configured to measure the time based on the signal from the clock built in the second information processing device 24 and output the calculation command signal at a predetermined timing.
- the timing at which the calculation command unit 244 outputs the calculation command signal may be a fixed time interval (for example, a 1-second interval) or a predetermined time. Then, when the particle group characteristic calculation unit 243 receives the calculation command signal, it reads the particle data from the storage unit 242 and calculates the particle group characteristics.
- the display control unit 245 receives the particle swarm property data and displays it on the display 25 as a calculation result. Specifically, the display control unit 245 displays a graph on the display 25 in which the horizontal axis is the time and the vertical axis is the value of the particle group characteristics, and the particle group characteristics at each time point calculated by the particle group characteristic calculation unit 243 are displayed. Plot sequentially on the graph.
- the position on the horizontal axis of each plot indicates the time when the particle swarm characteristics are calculated, and is based on the clock built in the second information processing apparatus 24. Specifically, this time is the time when the clock outputs the calculation command signal.
- the display control unit 245 may plot the plurality of types of particle group characteristics on the same graph. Further, the display control unit 245 determines that the particles are displayed when the value indicated by the particle group characteristics at the latest time point is within a predetermined range (for example, when the representative particle diameter D 50 exceeds a predetermined threshold value D th). A message indicating that the diameter distribution measurement may be started is displayed on the display 25.
- the display unit control unit may receive the histogram data and display it on the display 25 as a calculation result.
- the display 25 displays a particle group characteristic variation graph showing time variation of particle group characteristics (here, representative particle diameters D 10 , D 50, and D 90).
- the latest values are plotted at regular time intervals (here, every second).
- D 50 the value of the predetermined particle swarm property
- D th the set threshold value
- the display 25 has a histogram (horizontal axis: particle diameter, vertical axis: frequency) calculated from particle information extracted from a plurality of consecutive latest captured images at each time point. Diameter distribution) is displayed in real time. This histogram is updated to the latest state at regular time intervals (here, every second).
- the screens shown in FIGS. 5 and 6 may be displayed on separate screens or on the same screen.
- Particle information extraction operation The operation of extracting particle information from the suspension will be described. This operation is started after the powder sample is charged into the sample charging tank 111, the dispersion medium is mixed, and the obtained suspension is started to be circulated in the circulation system 11 in the particle size distribution measuring device 100. ..
- the suspension flowing in the image acquisition cell 21 is irradiated with light from the image acquisition light source 22.
- the particle group in the suspension flowing in the image acquisition cell 21 is imaged by the image pickup unit 23 (step S11), and the image pickup data is immediately output to the second information processing apparatus 24.
- the output captured image is processed by the particle information extraction unit 241 to extract information (particle information) of individual particles reflected in the captured image (step S12).
- the extracted one or more particle information is stored in the storage unit 242 as a particle data group (step S14).
- the operations of steps S11 to S14 are repeated until a predetermined time elapses from the start of the operation (step S15).
- Particle swarm property calculation operation The operation of calculating the particle group characteristics of the particle group based on the particle information extracted by the particle information extraction operation will be described. The operation is started after the particle information extraction operation is started, and is performed in parallel with the operation. In the particle swarm characteristic calculation operation, the particle swarm characteristics are calculated at predetermined fixed time intervals.
- the storage unit 242 is referred to at a predetermined timing, a plurality of predetermined particle data groups having a continuous order of the most recently extracted particles are acquired (step S21), and a histogram is obtained based on the particle information included in the plurality of particle data groups. Is calculated (step S22). The particle swarm characteristics are calculated based on the calculated histogram (step S23). The calculated particle swarm property values are plotted on a graph on the display 25 (step S24). When the calculated particle group characteristic value is within a predetermined range (for example, equal to or higher than a predetermined threshold value) (step S27), a message indicating that laser diffraction may be performed in the particle size distribution measuring device 100 is displayed on the display 25 (step). S26).
- a predetermined range for example, equal to or higher than a predetermined threshold value
- step S27 When a predetermined time has not elapsed from the start of the operation (step S27), a plurality of predetermined particle data groups having a continuous order of the most recently extracted particles at the next predetermined timing are acquired (step S21).
- the particle group characteristic calculation unit 243 acquires the particle data group so as to partially overlap the particle data group acquired at the previous timing. Then, the operations of steps S21 to S26 are repeated until a predetermined time elapses from the start of the operation (step S27).
- the particle group characteristics at each time point are calculated based on the particle information extracted from a plurality of consecutive captured images including the latest captured image. Therefore, the statistic of the particle information can be increased and the statistical error included in the calculated particle group characteristics can be reduced as compared with the case of calculating based on the particle information extracted from one captured image. .. Moreover, since the captured images already obtained up to the previous time point are used as a part of the plurality of captured images used for calculating the particle swarm characteristics at each time point, the statistical error is reduced to an allowable range. The time required to secure the required number of particle information can be shortened, and the particle swarm characteristics at each time point can be calculated in a short time. As a result, it is possible to easily grasp the time fluctuation while reducing the statistical error included in the calculated particle swarm characteristics.
- the particle size distribution measuring device 100 of the present embodiment can monitor the time variation of the characteristics of the particle group in the suspension flowing through the circulation system 11 by using such a particle group characteristic measuring device 200. Therefore, for example, the particle size is measured.
- the measurement of the particle size distribution using the optical measuring system 12 can be started at an appropriate timing while observing the degree of dispersion and the like.
- the calculation command unit 244 is configured to measure the time based on the signal from the clock and output the calculation command signal at a predetermined timing, but the present invention is not limited to this. As shown in FIG. 9, the calculation command unit 244 of another embodiment is configured to count the number of captured images processed by the particle information extraction unit 241, and the particle information extraction unit 241 captures a predetermined number of images. Each time the particle information is extracted from the image, the calculation command signal may be output to the particle group characteristic calculation unit 243.
- the particle information extraction unit 241 processes the captured image, extracts the imaging time of the captured image, associates it with the particle data group extracted from the captured image, and stores it in the storage unit 242. Then, when the particle group characteristic calculation unit 243 receives the calculation command signal, it calculates the particle group characteristics with reference to a predetermined number of particle data groups, and calculates a plurality of imaging times associated with the predetermined number of particle groups. With reference to this, one time associated with the calculated particle swarm characteristics is determined, and this is output to the display control unit 245 as imaging time data.
- the time indicated by the imaging time data may be any one of the plurality of referenced imaging times, or the elapsed time from a predetermined reference time calculated based on the plurality of referenced imaging times. It may be shown.
- the particle information extraction unit 241 of the embodiment has a plurality of particle data groups in which the particle group characteristics at each time point partially overlap with the plurality of particle data groups used for calculating the particle group characteristics at the time immediately before. It was calculated based on the particle information contained in, but it is not limited to this.
- the particle information extraction unit 241 extracts the particle swarm characteristics at each time point from a plurality of captured images used for calculating the particle group characteristics at a time point earlier than that, and from a plurality of captured images in which the captured time zones partially overlap. It may be calculated based on the extracted particle information.
- the image acquisition cell 21 of the above embodiment was of the flow type, but it is not limited to this and may be of the batch type.
- the batch type image acquisition cell 21 it is possible to grasp the time variation of the particle swarm characteristics due to the temperature change of the dispersion medium.
- the particle group characteristic calculation unit 243 of the above embodiment has calculated the particle group characteristics at each time point based on the particle information included in the recently extracted particle data group, but the present invention is not limited to this. In another embodiment, the particle group characteristics may be calculated based on the particle information contained in a plurality of particle data groups excluding the most recently extracted particle data group.
- the particle group characteristic calculation unit 243 of the above-described embodiment has calculated the particle group characteristics at each time point based on the particle information included in the plurality of particle data groups in which the extraction order is continuous, but the present invention is not limited to this. In another embodiment, the particle swarm characteristics may be calculated based on the particle information included in the plurality of particle data groups whose extraction order is discontinuous.
- the particle group characteristic measuring device 200 of the above embodiment constitutes a part of the particle size distribution measuring device 100, but is not limited to this. As a matter of course, the particle swarm optimization device 200 may be used alone.
- the functions as the particle size distribution calculation unit 123a and the functions as the particle information extraction unit 241 and the storage unit 242, the particle group characteristic calculation unit 243 and the display control unit 245 are exhibited by separate computers. However, it doesn't work. In other embodiments, these functions may be exerted by a common computer.
- the functions as the particle information extraction unit 241 and the storage unit 242, the particle group characteristic calculation unit 243, and the display control unit 245 are exhibited by one computer, but the present invention is not limited to this. In other embodiments, these functions may be exerted by multiple computers.
- the particle information extraction operation and the particle group characteristic calculation operation are completed after a lapse of a predetermined time from the start of the operation, but the operation is not limited to this.
- the particle information extraction operation may be terminated by extracting particle information from a predetermined number of captured images.
- the particle swarm property calculation operation may be terminated when the calculated particle swarm property value exceeds or falls below a predetermined value, or may be terminated when the particle swarm property value is calculated a predetermined number of times.
- both the particle information extraction operation and the particle group characteristic calculation operation may be terminated by the user pressing the end button.
- the time variation of the particle group characteristics is measured based on the captured image of the particle group, the statistical error included in the calculated particle group characteristics can be reduced, and the time variation can be reduced. It is possible to provide a particle swarm property measuring device that is easy to grasp.
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
このようにすれば、各時点における前記粒子群特性を、その1つ前の時点における粒子群特性の算出に用いられた複数の撮像画像と一部が重複する複数の撮像画像から抽出された粒子情報に基づいて算出するようにしており、すなわち各時点における粒子群特性をその1つ前の時点における粒子群特性の算出に用いられる粒子情報の一部を加味して算出するので、隣り合う時点間における粒子群特性の変化量を小さくできる。これにより、隣り合う時点間における粒子群特性の変化量を小さくすることで、各時点における粒子群特性を平滑化し、その時間変動を劇的に把握しやすくできる。
このようにすれば、各時点において算出される粒子群特性を、各時点における粒子群の最新状態を反映したものにできる。
このようにすれば、一定の時間毎の粒子群特性の変動を把握できるので、ユーザ利便性を高められる。
このようにすれば、粒子群を撮像した時刻に対する粒子群の変動を把握できるので、ユーザ利便性を高められる。
このようにすれば、ユーザは、粒子群特性の時間変動をリアルタイムで確認することができる。
このようにすれば、複数の粒子群特性として互いに異なる種類のものを同一画面に表示することにより、粒子群の状態の時間変動を把握することができる。例えば、複数の粒子群特性として代表粒子径D50と代表アスペクト比とを表示する場合、代表粒子径D50の値が経時的に小さくなり、アスペクト比が経時的に大きくなっていると、分散している粒子が壊れたり変形したりしている可能性があることを把握できる。
このような粒子群特性測定方法であれば、前記した本発明の粒子群特性測定装置と同様の作用効果を奏することができる。
このような粒子群特性測定装置用プログラムであれば、本発明の粒子群特性測定装置と同様の作用効果を奏することができる。
このような粒子径分布測定装置であれば、前記した本発明の粒子群特性装置により循環系を流れる懸濁液中の粒子群特性をモニタリングするので、循環系内における粒子群特性の時間変動を把握しやすい。このため、従来に比べてより適切なタイミングで光学式測定系を用いた粒子径分布の測定を開始することができる。
このような粒子径分布測定方法によれば、本発明の粒子径分布測定装置と同様の作用効果を奏することができる。
21・・・画像取得用セル
22・・・画像取得用光源
23・・・撮像部
24・・・第2情報処理装置
241・・・粒子情報抽出部
242・・・記憶部
243・・・粒子群特性算出部
245・・・表示制御部
25・・・ディスプレイ
懸濁液から粒子情報を抽出する動作について説明する。当該動作は、粒子径分布測定装置100において、試料投入槽111内に粉体試料を投入して分散媒を混合し、得られた懸濁液を循環系11で循環させ始めた後に開始される。
粒子情報抽出動作により抽出された粒子情報に基づき、粒子群の粒子群特性を算出する動作について説明する。当該動作は、粒子情報抽出動作が開始した後に開始し、当該動作と並列して行われる。粒子群特性算出動作では、所定の一定の時間間隔で粒子群特性が算出される。
なお、本発明は前記実施形態に限られるものではない。
Claims (13)
- 分散媒中に分散した複数の粒子から成る粒子群の特性である粒子群特性の時間変動を測定するものであって、
前記粒子群を撮像する撮像部と、
前記撮像部により撮像された撮像画像を処理し、当該撮像画像に映り込んだ粒子の情報である粒子情報を抽出する粒子情報抽出部と、
時系列に沿った複数時点における前記粒子群特性を、それぞれの時点以前に撮像された複数の前記撮像画像から抽出される前記粒子情報に基づいて算出する粒子群特性算出部と、を備え、
前記粒子群特性算出部が、各時点における前記粒子群特性を、それよりも前の時点における前記粒子群特性の算出に用いた複数の前記撮像画像と、撮像した時間帯が一部重複する複数の前記撮像画像から抽出された前記粒子情報に基づいて算出する粒子群特性測定装置。 - 前記粒子群特性算出部が、各時点における前記粒子群特性を、その1つ前の時点における前記粒子群特性の算出に用いられた複数の前記撮像画像と一部が重複する複数の前記撮像画像から抽出された前記粒子情報に基づいて算出する、請求項1に記載の粒子群特性測定装置。
- 前記粒子群特性算出部が、各時点において、その直近に前記撮像画像から抽出された前記粒子情報を含む複数の前記粒子情報に基づいて前記粒子群特性を算出する請求項1又は2に記載の粒子群特性測定装置。
- 前記粒子群特性算出部が、撮像された順番が連続する一定数の前記撮像画像から抽出された前記粒子情報に基づいて、各時点における前記粒子群特性を算出する請求項1~3のいずれか一項に記載の粒子群特性測定装置。
- 前記粒子群特性の算出を指令する算出指令信号を前記粒子群特性算出部に出力する算出指令部をさらに備え、
前記算出指令部が所定の時間間隔毎に前記算出指令信号を出力する請求項1~4のいずれか一項に記載の粒子群特性測定装置。 - 前記粒子群特性の算出を指令する算出指令信号を前記粒子群特性算出部に出力する算出指令部をさらに備え、
前記算出指令部は、前記粒子情報抽出部が所定数の前記撮像画像から前記粒子情報を抽出する毎に前記算出指令信号を出力する請求項1~4のいずれか一項に記載の粒子群特性測定装置。 - 前記粒子群特性算出部により算出された前記各時点における算出結果をリアルタイムで表示させる表示制御部をさらに備える請求項1~6のいずれか一項に記載の粒子群特性測定装置。
- 前記粒子群特性算出部が異なる複数の前記粒子群特性を算出するものであり、
前記表示制御部が、当該複数の前記粒子群特性を同一画面に表示する請求項7に記載の粒子群特性測定装置。 - 前記粒子群特性が、前記粒子群を構成する複数の粒子の代表粒子径である請求項1~8のいずれか一項に記載の粒子群特性測定装置。
- 分散媒中に分散した複数の粒子から成る粒子群の特性である粒子群特性の時間変動を測定する方法であって、
前記粒子群を撮像する撮像ステップと、
前記撮像ステップにおいて撮像した撮像画像を処理し、当該撮像画像に映り込んだ粒子の情報である粒子情報を抽出する粒子情報抽出ステップと、
時系列に沿った複数時点における前記粒子群特性を、それぞれの時点以前に撮像された複数の前記撮像画像から抽出される前記粒子情報に基づいて算出する粒子群特性算出ステップと、を備え、
前記粒子群特性算出ステップにおいて、各時点における前記粒子群特性を、それよりも前の時点における前記粒子群特性の算出に用いた複数の前記撮像画像と、撮像した時間帯が一部重複する複数の前記撮像画像から抽出された前記粒子情報に基づいて算出する、粒子群特性測定方法。 - 分散媒中に分散した複数の粒子から成る粒子群の特性である粒子群特性の時間変動を測定する粒子群特性測定装置用のプログラムであって、
前記粒子群を撮像する撮像部としての機能と、
前記撮像部により撮像された撮像画像を処理し、当該撮像画像に映り込んだ粒子の情報である粒子情報を抽出する粒子情報抽出部としての機能と、
時系列に沿った複数時点における前記粒子群特性をそれぞれの時点以前に撮像された複数の前記撮像画像から抽出される前記粒子情報に基づいて算出するものであり、各時点における前記粒子群特性を、それよりも前の時点における前記粒子群特性の算出に用いた複数の前記撮像画像と、撮像した時間帯が一部重複する複数の前記撮像画像から抽出された前記粒子情報に基づいて算出する粒子群特性算出部としての機能と、
をコンピュータに発揮させることを特徴とする粒子群特性測定装置用のプログラム。 - 分散媒中に分散した複数の粒子から成る粒子群の粒子径分布を測定するものであって、
前記分散媒と前記粒子を混合して懸濁液とする混合槽と、測定セルとの間で、前記懸濁液を循環させる循環系と、
前記測定セル内を流れる前記懸濁液にレーザ光を照射して生じる散乱光に基づいて前記粒子群の粒子径分布を測定する光学式測定系と、
前記循環系を流れる前記懸濁液中の前記粒子群の特性の時間変動を測定する請求項1に記載の粒子群特性測定装置と、
を備える粒子径分布測定装置。 - 分散媒中に分散した複数の粒子から成る粒子群の粒子径分布を測定する方法であって、
前記分散媒と前記粒子を混合して懸濁液とする混合槽と、測定セルとの間で、前記懸濁液を循環させる循環ステップと、
請求項10に記載の方法により、循環する前記懸濁液中の前記粒子群の特性の時間変動を測定する粒子群特性測定ステップと、
測定セル内を流れる前記懸濁液にレーザ光を照射して生じる散乱光に基づいて前記粒子群の粒子径分布を測定する粒子径分布測定ステップと、
を含む粒子径分布測定方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021552335A JPWO2021075309A1 (ja) | 2019-10-15 | 2020-10-06 | |
EP20877474.5A EP4033221A4 (en) | 2019-10-15 | 2020-10-06 | Particle group characteristic measurement device, particle group characteristic measurement measurement process, program for particle group characteristic measurement measuring device, particle diameter distribution measuring device and distribution process of diameter diameters PARTICLES |
CN202080071290.2A CN114556080A (zh) | 2019-10-15 | 2020-10-06 | 粒子群特性测定装置、粒子群特性测定方法、粒子群特性测定装置用程序、粒径分布测定装置和粒径分布测定方法 |
US17/754,831 US20240102907A1 (en) | 2019-10-15 | 2020-10-06 | Particle group characteristic measurement device, particle group characteristic measurement method, storage medium recording program for particle group characteristic measurement device, particle diameter distribution measurement device, and particle diameter distribution measurement method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019-188443 | 2019-10-15 | ||
JP2019188443 | 2019-10-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021075309A1 true WO2021075309A1 (ja) | 2021-04-22 |
Family
ID=75537483
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2020/037815 WO2021075309A1 (ja) | 2019-10-15 | 2020-10-06 | 粒子群特性測定装置、粒子群特性測定方法、粒子群特性測定装置用プログラム、粒子径分布測定装置及び粒子径分布測定方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20240102907A1 (ja) |
EP (1) | EP4033221A4 (ja) |
JP (1) | JPWO2021075309A1 (ja) |
CN (1) | CN114556080A (ja) |
WO (1) | WO2021075309A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7255770B1 (ja) * | 2021-11-30 | 2023-04-14 | Jfeスチール株式会社 | 粒状物体の計測装置及び計測方法、異常検知方法並びに粒状鉄の製造方法 |
WO2023100696A1 (ja) * | 2021-11-30 | 2023-06-08 | Jfeスチール株式会社 | 粒状物体の計測装置及び計測方法、異常検知方法並びに粒状鉄の製造方法 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0436637A (ja) * | 1990-05-31 | 1992-02-06 | Canon Inc | 検体測定方法及び検体測定装置 |
JPH06277687A (ja) * | 1993-03-24 | 1994-10-04 | Toshiba Corp | Mlss計 |
JP2000146817A (ja) * | 1998-11-12 | 2000-05-26 | Nikkiso Co Ltd | 粒度分布測定装置 |
JP2002207001A (ja) | 2001-01-11 | 2002-07-26 | Nikkiso Co Ltd | 多点粒度分布測定システム |
JP2013015357A (ja) * | 2011-07-01 | 2013-01-24 | Shimadzu Corp | フローサイトメータ |
JP2015105898A (ja) * | 2013-11-30 | 2015-06-08 | 鹿島建設株式会社 | 地盤材料の表面水量管理方法及びシステム |
JP2015520397A (ja) * | 2012-06-22 | 2015-07-16 | マルバーン インストゥルメンツ リミテッド | 不均質流体試料の特性評価 |
JP2017116260A (ja) * | 2015-12-21 | 2017-06-29 | 花王株式会社 | 粉粒体質量検査装置及び検査方法、並びに粉粒体含有物品の製造装置及び製造方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10943692B1 (en) * | 2008-05-07 | 2021-03-09 | Lawrence A. Lynn | System and method for generating quaternary images of biologic force propagation and recovery |
CN102365543A (zh) * | 2009-01-16 | 2012-02-29 | 纽约大学 | 用全息视频显微术的自动实时粒子表征和三维速度计量 |
WO2013141923A2 (en) * | 2011-12-20 | 2013-09-26 | Sadar 3D, Inc. | Scanners, targets, and methods for surveying |
JP6174915B2 (ja) * | 2012-06-07 | 2017-08-02 | 花王株式会社 | 電子写真用トナー |
JP6412824B2 (ja) * | 2015-05-01 | 2018-10-24 | 富士フイルム株式会社 | レンチキュラー印刷物の製造方法 |
JP6530509B2 (ja) * | 2015-12-07 | 2019-06-12 | 富士フイルム株式会社 | 透明樹脂基材印画物の製造方法 |
-
2020
- 2020-10-06 US US17/754,831 patent/US20240102907A1/en active Pending
- 2020-10-06 WO PCT/JP2020/037815 patent/WO2021075309A1/ja active Application Filing
- 2020-10-06 EP EP20877474.5A patent/EP4033221A4/en active Pending
- 2020-10-06 CN CN202080071290.2A patent/CN114556080A/zh active Pending
- 2020-10-06 JP JP2021552335A patent/JPWO2021075309A1/ja active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0436637A (ja) * | 1990-05-31 | 1992-02-06 | Canon Inc | 検体測定方法及び検体測定装置 |
JPH06277687A (ja) * | 1993-03-24 | 1994-10-04 | Toshiba Corp | Mlss計 |
JP2000146817A (ja) * | 1998-11-12 | 2000-05-26 | Nikkiso Co Ltd | 粒度分布測定装置 |
JP2002207001A (ja) | 2001-01-11 | 2002-07-26 | Nikkiso Co Ltd | 多点粒度分布測定システム |
JP2013015357A (ja) * | 2011-07-01 | 2013-01-24 | Shimadzu Corp | フローサイトメータ |
JP2015520397A (ja) * | 2012-06-22 | 2015-07-16 | マルバーン インストゥルメンツ リミテッド | 不均質流体試料の特性評価 |
JP2015105898A (ja) * | 2013-11-30 | 2015-06-08 | 鹿島建設株式会社 | 地盤材料の表面水量管理方法及びシステム |
JP2017116260A (ja) * | 2015-12-21 | 2017-06-29 | 花王株式会社 | 粉粒体質量検査装置及び検査方法、並びに粉粒体含有物品の製造装置及び製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP4033221A4 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7255770B1 (ja) * | 2021-11-30 | 2023-04-14 | Jfeスチール株式会社 | 粒状物体の計測装置及び計測方法、異常検知方法並びに粒状鉄の製造方法 |
WO2023100696A1 (ja) * | 2021-11-30 | 2023-06-08 | Jfeスチール株式会社 | 粒状物体の計測装置及び計測方法、異常検知方法並びに粒状鉄の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2021075309A1 (ja) | 2021-04-22 |
EP4033221A1 (en) | 2022-07-27 |
US20240102907A1 (en) | 2024-03-28 |
CN114556080A (zh) | 2022-05-27 |
EP4033221A4 (en) | 2023-10-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2021075309A1 (ja) | 粒子群特性測定装置、粒子群特性測定方法、粒子群特性測定装置用プログラム、粒子径分布測定装置及び粒子径分布測定方法 | |
US8772738B2 (en) | Particle analyzing apparatus and particle imaging method | |
CN101933065B (zh) | 车辆周围监测装置、车辆及车辆周围监测方法 | |
CN101849834B (zh) | 放射线成像设备及其暗电流校正方法 | |
US8675196B2 (en) | Analyzer and particle imaging method | |
CN108801601B (zh) | 菲涅尔透镜杂散光噪声的测试方法、设备及存储介质 | |
CN108027362B (zh) | 用于流式细胞仪的阈值选择器 | |
US20230314782A1 (en) | Sample observation device and sample observation method | |
US10691956B2 (en) | Information processing apparatus, information processing system, information processing method, and storage medium having determination areas corresponding to waiting line | |
JP2005069725A (ja) | 粒子径計測装置 | |
JP2018004450A (ja) | 気泡径分布測定装置及び気泡径分布測定方法 | |
US20190051005A1 (en) | Image depth sensing method and image depth sensing apparatus | |
JP6284024B2 (ja) | 細胞生死判定システム、細胞生死判定方法 | |
US20190273845A1 (en) | Vibration monitoring of an object using a video camera | |
JP2014082957A (ja) | 細胞計数装置及び細胞計数プログラム | |
JPWO2017195785A1 (ja) | 粒子分析装置、及び、粒子分析システム | |
WO2018211982A1 (ja) | 画像処理装置および方法、並びに画像処理システム | |
JP2018196426A (ja) | 毛穴検出方法及び毛穴検出装置 | |
JP2018051244A5 (ja) | ||
JP4490061B2 (ja) | 粒子画像分析装置 | |
EP4361596A1 (en) | Particle image analysis apparatus, particle image analysis system, particle image analysis method, and program for particle image analysis apparatus | |
JPH11337470A (ja) | フロー式粒子画像分析装置 | |
JP2020094925A (ja) | 品質評価方法 | |
WO2023095414A1 (ja) | 微小粒子の計測方法、微小粒子計測装置及び微小粒子計測システム | |
US11238566B2 (en) | Image processing device, system, and method for improving signal-to-noise of microscopy images |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 20877474 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2021552335 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 17754831 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2020877474 Country of ref document: EP Effective date: 20220420 |