CN103047929A - Apparatus for measuring volume of powder layer - Google Patents
Apparatus for measuring volume of powder layer Download PDFInfo
- Publication number
- CN103047929A CN103047929A CN2012100243574A CN201210024357A CN103047929A CN 103047929 A CN103047929 A CN 103047929A CN 2012100243574 A CN2012100243574 A CN 2012100243574A CN 201210024357 A CN201210024357 A CN 201210024357A CN 103047929 A CN103047929 A CN 103047929A
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- Prior art keywords
- camera
- powder layer
- powder
- control device
- volume
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F22/00—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
- G06T1/0007—Image acquisition
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/60—Analysis of geometric attributes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
Abstract
The invention provides an apparatus for measuring volume of a powder layer. The apparatus for measuring volume of the powder layer is provided with a camera (21), a lifting device (23) making the camera moving upward in a vertical direction, a backlight component (30) arranged in a position of the same direction of the camera, a transparent or translucent cylindrical container (104) and a control device (40) for controlling actions. The lifting device is provided with a displacement measuring device (42). The displacement measuring device (42) detects the displacement of the camera in the vertical direction from the determined position from the control device. images shot by the camera is analyzed by the image analyzing device (41) and powder face position of the powder layer in the cylindrical container is measured, and the size of the powder layer is calculated according to the initial determined position and the powder face position.
Description
Technical field
The present invention relates to a kind of powder layer volume measuring device.
Background technology
The physics value of powder is measured with various parameters such as angle of repose, collapse angle, angle of spatula, bulk density/tap density, intensity of compression, condensation degree, dispersion degree, declinates.About the device that these physics values are measured, can in patent documentation 1, recognize its example.
Technical literature formerly
Patent documentation
Patent documentation 1: No. 4368738 communique of Jap.P.
Summary of the invention
Invent problem to be solved
Using graduated cylinder when measuring with cup, as with put into graduated cylinder in the relevant evaluation method of the compressibility of sample powder, have tap density (be also referred to as and knock density) and volume degree of reducing carried out method for measuring.Assay method as tap density, has following method, namely, the sample powder of scheduled volume is put into after the graduated cylinder, implement knocking of pre-determined number or the schedule time with predetermined stroke amount and predetermined vibration frequency (number of taps in the time per unit), thereby ask for the method for tap density.When for example adopting American Pharmacopeia (USP) hammering method and American Society Testing and Materials (ASTM) hammering method, ask for tap density with the quality of putting into the sample powder in the graduated cylinder divided by the volume of the sample powder after knocking.In addition, in the journey powder compression evaluation assessment of the north, river, also utilize same procedure to knock, the volume of the sample powder before knocking is V
0, when the volume of the sample powder after knocking is V, utilize (V
0-V)/V
0Ask for volume degree of reducing.
So, no matter in any assay method, all by to knock front and/or knock after graduated cylinder in the volume of powder layer measure, thereby ask for tap density and volume degree of reducing.The stereometry of this moment is preferably, and implements with the cordless of not oppressing powder layer.Certainly, although use the such non-contact sensor of device of patent documentation 1 record, but according to the kind of sample powder and the concavo-convex situation of particle diameter or powder face, there is sometimes the situation that adopts this non-contact sensor of ultrasonic sensor to be difficult to carry out the high precision stereometry.
The present invention finishes in view of above-mentioned point, and its purpose is, a kind of powder layer volume measuring device that can carry out to the volume of the powder layer in the transparent or semitransparent cylindrical vessel high-precision measuring is provided.
For the method for dealing with problems
Powder layer volume measuring device of the present invention possesses: camera; Backlight assembly, it is configured in and described camera position in opposite directions; Cylindrical vessel, it is transparent or semitransparent, and is configured between described camera and the described backlight assembly; Jacking gear, it makes described camera mobile in vertical direction; Control device, it implements the action control to described camera and described jacking gear; The displacement determinator, it detects the vertical direction displacement of described camera from the initial, set position that described control device sets, and exports described control device to; The image of the powder layer in the image analysis apparatus, that it is taken described camera, described container is analyzed, and exports analysis result to described control device; Arithmetic element, it calculates the volume of powder layer according to the vertical direction displacement of described camera from described initial, set position.
In powder layer volume measuring device of the present invention, described cylindrical vessel is installed in knocking on the platform of the knocking device of having set stroke amount and vibration number.
In powder layer volume measuring device of the present invention, described cylindrical vessel is made of graduated cylinder.
The invention effect
According to the present invention, because the image of the powder layer in the cylindrical vessel is analyzed by image analysis apparatus, and the vertical direction displacement of camera from initial, set position detected, thereby calculate the volume of powder layer according to this vertical direction displacement, so can carry out high-precision stereometry.
Description of drawings
Fig. 1 is the summary front view of Powder Physical determinator.
Fig. 2 is the summary side view of Powder Physical determinator.
Fig. 3 is the summary cut-open view of Powder Physical determinator.
Fig. 4 is the summary cut-open view of backlight assembly, and the figure when observing from the side.
The key diagram that Fig. 5 describes for the concept that image is processed.
Fig. 6 is the structured flowchart of powder layer volume measuring device.
Fig. 7 measures the summary cut-open view that describes for being used for to tap density or volume degree of reducing.
Symbol description
1 Powder Physical determinator
2 bodies
3 lids
10 measuring cells
20 camera heads
21 cameras
23 jacking gears
30 backlight assemblies
41 image analysis apparatus
42 displacement determinators
50 knocking devices
51 knock platform
52 knock axle
104 cylindrical vessels
Embodiment
Powder layer volume measuring device involved in the present invention is as the Powder Physical determinator 1 that can measure the tap density that is fed into the sample powder in the transparent or semitransparent cylindrical vessel and volume degree of reducing and realize.
The two large key elements that consist of the outward appearance of Powder Physical determinator 1 are the lid 3 of body 2 and its front portion of covering.Body 2 is, the member that uses the outside encirclement of the pallet structure that the basket 4 of sheet metal system will scheme not show to form, and it is bearing on the carrying plane by adjustable for height a plurality of support foots 5.Lid 3 major part is formed by transparent synthetic resin, and by pair of right and left arm 6 be installed in body 2 about on two sides.The front end of arm 6 becomes the fulcrum 7 that links with body 2, and lid 3 is centered by fulcrum 7 and rotate in vertical plane.
When putting down the state that will become the solid line among Fig. 2 when covering 3.At this moment, the space of tegmentum 3 encirclements becomes measuring cell shown in Figure 3 10.As mentioned above, because lid 3 main position is transparent, therefore, even putting down the inside that also can see through measuring cell 10 under 3 the state of covering.The operator can in visual situation of confirming sample etc., measure operation under the condition that not affected by dust.
Front at lid 3 is formed with handle portion 3a, catches handle portion 3a with hand, thereby can be with lid 3 dotted line positions of mentioning to Fig. 2.When the dot-and-dash line position of mentioning to Fig. 2, even hand is decontroled, lid 3 will rest on this position.Measuring cell 10 is on the basis of open state, and the operator implements the sample that measure to finish again or the setting of the arrangement of the apparatus that is used for measuring, new mensuration operation, mainteinance repair operation etc.When not needing to make in advance measuring cell 10 be in open state, then put down and cover 3.In the axle combination that comes support cap 3 by fulcrum 7 damper is arranged, thus put down hand is decontroled midway the time, lid 3 will descend lentamente, will undisturbedly close under the condition that can not impact thus.
In leftward position body 2 outsides, when watching from the front, dispose camera head 20.Internal configurations at measuring cell 10 has backlight assembly 30.Backlight assembly 30 is installed in from the outstanding carriage 31 of the inwall of the depth side of measuring cell 10.Transparent or semitransparent cylindrical vessel 104 is configured between camera head 20 and the backlight assembly 30, will be elaborated later to this.
Be accompanied with the jacking gear 23 that camera 21 is moved in vertical direction along column 22 on the camera head 20.Jacking gear 23 by the vertical line slideway 24 on the side that is fixed on column 22, can along the slide block 25 of line slideway 24 liftings, be attached on the slide block 25 and by self rotation make slide block 25 liftings vertical ball screw 26, the stepper motor 27 of the subsidiary reduction gear of ball screw 26 rotations is consisted of.Camera 21 carries out lifting in the mode that is maintained on the slide block 25.
As the light source of backlight assembly 30 are light emitting diode (below be called " LED ").LED is constituted as LED lamp 32 (with reference to Fig. 4).LED lamp 32 possesses: elongated container 33, and it possesses transparent or semitransparent cover plate 33a; A plurality of LED34, its inside at container 33 is configured to row.LED34 is the diode of normally used type, preferably uses White LED.
The image that camera 21 is taken becomes image as shown in Figure 5.Image is made of the set of a plurality of pixels.The inside that illustrates transparent cylindrical vessel in Fig. 5 has the situation of the powder layer of tubular.
Powder Physical determinator 1 possesses the function of the determinator of tap density and volume degree of reducing.Necessary equipment is knocking device in the mensuration of tap density and volume degree of reducing.As shown in Figure 3, being used for of knocking device 50 being configured in Powder Physical determinator 1 possesses the local space implementing to measure, be the floor portion of measuring cell 10.Knocking device 50 possesses and knocks platform 51, knocks axle 52 to what knock that platform 51 supports.The motor 53 that knocks shown in Figure 6, the push rod that utilization figure does not show make and knock axle 52 and rise, and implement hammer action.
Knocking motor 53 is stepper motors, and is driven by motor driver 54.When control device 40 during to motor driver 54 pipage control signal, the driving pulse corresponding with control signal is from motor driver 54 outputs.Knocking motor 53 only is rotated with the angle corresponding with number of drive pulses.
Because knocking motor 53 is stepping motors, therefore can more freely set rotational angle and the velocity of rotation that puts on push rod.Therefore, be easy to set stroke amount and the vibration frequency of knocking according to physical property and the mensuration purpose of sample, thereby improved the use degree of freedom of knocking device 50.
In Powder Physical determinator 1, be provided with, make the sample powder through the sieve vibrating device of vibratory screening apparatus.The body part of sieve vibrating device is positioned at basket 4, only has the part of the vibrating arm 60 (with reference to Fig. 7) that this body branch possesses outstanding to measuring cell 10.The sieve installing frame 61 of ring-type is fixed on the vibrating arm 60.Vibrating arm 60 has been applied in the vibration of above-below direction by electromagnet shown in Figure 6 62.
As shown in Figure 6, camera head 20, jacking gear 23, backlight assembly 30, the displacement determinator 42 of putting down in writing except preamble, knock motor 53, motor driver 54, electromagnet 62 these inscapes, on control device 40, also be connected with display device 70.Display device 70 is made of external monitor apparatus etc., and is used for implementing the demonstration of determination data or result of calculation etc.
Next, according to Fig. 3 and Fig. 7, to how using Powder Physical determinator 1 describe.
Setting when utilizing USP hammering method or ASTM hammering method to measure tap density or when utilizing the north, river journey powder compression evaluation assessment to measure volume degree of reducing shown in Figure 7.Skewed slot 102, sieve 100, sieve pressing piece 101 are overlapped on the sieve installing frame 61 in turn, and by securing member 103 above-mentioned parts are fixed on the sieve installing frame 61.Transparent or semitransparent cylindrical vessel 104 is installed in knocks on the platform 51, at this, cylindrical vessel 104 is graduated cylinder.
When the volume of the powder layer in the graduated cylinder is measured, at first, utilize camera 21 and control device 40 to measure from initial, set position height (mm) till the 1st scale mark of graduated cylinder, and be stored in the storage unit that control device 40 possesses.Umber of pulse (umber of pulses of the outputs such as previously described linear encoder, rotary encoder, resolver) when camera 21 is moved to the height of scale mark from initial, set position is counted, and utilize control device 40 that it is changed, thereby ask for height (mm).Control device 40 possesses arithmetic element, below the volume of illustrated powder layer calculate and also implement by this arithmetic element." storage " in the later explanation, " calculating " etc. refer to, implement its action by storage unit and the arithmetic element of control device 40.
Then, the height (mm) till the 2nd scale mark of graduated cylinder from initial, set position is stored.Poor according to the difference in volume between the 1st scale mark and the 2nd scale mark and height (mm), decide the volume of the graduated cylinder of every 1mm.According to the volume of the graduated cylinder of every 1mm and the position of the 1st scale mark that has stored or the 2nd scale mark, can calculate the height of reference point (position of 0ml).
For example, the height from initial, set position till the 1st scale mark of 50ml is 30.00mm, and next the height till the 2nd scale mark of 250ml is 130.00mm from initial, set position.At this moment, because difference in volume is 200ml, and the difference in height between the 1st scale mark and the 2nd scale mark is 100.00mm, therefore the graduated cylinder volume of every 1mm is 2 (ml/mm), thus, the height that can calculate reference point is, apart from the position of initial, set position 5.00mm.And, when the height till the powder face of powder layer is 80.00mm from initial, set position, by multiply by 75.00mm (height of the powder face height-reference point of powder layer) with 2 (ml/mm), thereby the volume that obtains the powder layer in the graduated cylinder is 150ml.
In the sample powder being put into sieve pressing piece 101 and sieve 100, and when making 61 vibration of sieve installing frame by vibrating arm 60, passed sieve 100 sample powder from skewed slot 102 by and fall, and enter into cylindrical vessel 104.When having put into the sample powder of scheduled volume in the cylindrical vessel 104, the vibration of vibrating arm 60 is stopped.Then utilize method described later to come the powder face of powder layer is detected, and the capacity (ml) of asking for according to the height of this moment is stored.Then implement to knock.When having implemented the knocking of pre-determined number, powder layer is compressed, the powder face of powder layer with knock before the powder face of powder layer compare and descend.
Next, the detection method of the powder face of powder layer described.After knocking, camera 21 from the foot of graduated cylinder along powder layer and rising.Powder layer part in the graduated cylinder is not because have light transmission from backlight assembly 30, thus dimmed, there is not the part of powder layer in the graduated cylinder because light transmission from backlight assembly 30 is arranged, so be identified as bright color.By bright color is pre-recorded in control device 40, thereby other colors in addition are identified as dead color.
In the way that camera 21 rises, when the look area of the bright color that detects in the look area surveyed area in the camera picture of camera 21 has surpassed the threshold value of look area of the bright color that sets in advance in control device 40, camera 21 is stopped automatically.And, to storing according to light the volume (ml) that the height till the powder face of powder layer asks for from benchmark.
And, except the look area, by bright color and dead color are carried out binary conversion treatment, also can detect the powder face of powder layer.In addition, owing to shortened minute, therefore can realize the shortening of the rise time of camera 21.That is to say, can be in the following way, namely, temporarily make camera 21 to rise at a high speed after the position above the powder face of powder layer, make camera 21 drop to the position of the below of this powder face, and then make camera 21 risings, and this powder face is detected.Perhaps can be in the following way, that is, make camera 21 to rise at a high speed the powder face that do not surpass powder layer but after the position near this powder face, make camera 21 risings, and this powder face is detected.
Shown in above-mentioned illustration, according to light height till the powder face of powder layer and the graduated cylinder volume of every 1mm from benchmark, can ask for the volume of the powder layer in the graduated cylinder.
In the detection of the powder face of powder layer, use camera to have following advantage.For example, when using laser sensor, when the wall at graduated cylinder is attached with the sample powder, or to adhere at this only be that locality is adhered to and had under the state in hole, and laser can not see through, even or see through, but the intensity of the laser that this sees through also a little less than, thereby can't detect the powder face of powder layer.Yet when the stronger sensor of the intensity of using laser, detecting error can increase.In addition, when using ultrasonic sensor, there are the following problems, that is, precision is low, and for porous sample powder, can not detect the powder face of powder layer.
To this, if implementing image with camera 21 judges, judge that then scope is wider, even when the wall of graduated cylinder is attached with the sample powder, as long as the position that exists some sample powders not adhere on the wall, just can pass this position and identify the powder face of powder layer, therefore can measure accurately.
The assay method of tap density has USP hammering method, ASTM hammering method etc., and the assay method of volume degree of reducing has the methods such as the north, river journey hammering method.Be which kind of method according to implement measuring what adopt, thereby use the cylindrical vessel (graduated cylinder) 104 that conforms to it and knock platform 51 and skewed slot 102.For example when adopting the USP hammering method, use volume to be the glass cylinder of 250ml or 100ml.In addition, when adopting the ASTM hammering method, use volume to be the glass cylinder of 100ml or 250ml.
Although in the above-described embodiment, camera 21 possesses image analysis apparatus 41, and can adopt not is that camera 21 possesses image analysis apparatus 41 yet, but control device 40 possesses the structure of image analysis apparatus 41.
More than, although embodiments of the present invention are illustrated, scope of the present invention is not defined to this, can be in the scope of the purport that does not break away from invention in addition various changes implement.
Utilizability on the industry
The present invention can be widely used in the powder layer volume measuring device.
Claims (3)
1. powder layer volume measuring device possesses following structure:
Camera;
Backlight assembly, it is configured in and described camera position in opposite directions;
Cylindrical vessel, it is transparent or semitransparent container, and is configured between described camera and the described backlight assembly;
Jacking gear, it makes described camera mobile in vertical direction;
Control device, it implements the action control to described camera and described jacking gear;
The displacement determinator, it detects the vertical direction displacement of described camera from the initial, set position that described control device sets, and exports described control device to;
The image of the powder layer in the image analysis apparatus, that it is taken described camera, described container is analyzed, and exports analysis result to described control device;
Arithmetic element, it calculates the volume of powder layer according to the vertical direction displacement of described camera from described initial, set position.
2. powder layer volume measuring device as claimed in claim 1, it possesses following structure:
Described cylindrical vessel is installed in knocking on the platform of knocking device.
3. powder layer volume measuring device as claimed in claim 1, it possesses following structure:
Described cylindrical vessel is made of graduated cylinder.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-227850 | 2011-10-17 | ||
| JP2011227850A JP2013088231A (en) | 2011-10-17 | 2011-10-17 | Powder layer volume measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103047929A true CN103047929A (en) | 2013-04-17 |
Family
ID=48060663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100243574A Pending CN103047929A (en) | 2011-10-17 | 2012-01-31 | Apparatus for measuring volume of powder layer |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2013088231A (en) |
| KR (1) | KR20130041716A (en) |
| CN (1) | CN103047929A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308001A (en) * | 2013-05-17 | 2013-09-18 | 河海大学 | Device and method for measuring underwater AoR (Angle of Repose) of sediment based on optical imaging |
| CN109883883A (en) * | 2019-04-19 | 2019-06-14 | 华南农业大学 | A kind of tap density apparatus for automatically measuring |
| CN110567404A (en) * | 2019-09-02 | 2019-12-13 | 苏州久越金属科技有限公司 | Automatic detection equipment for CCD of 5G communication product |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016196504A1 (en) | 2015-06-01 | 2016-12-08 | Digital Hospital, Inc. | Dosage confirmation apparatus |
| CN110274847B (en) * | 2019-07-29 | 2024-03-08 | 山东农业大学 | Vibration capacity cylinder and method for detecting MgO activity based on vibration capacity cylinder |
| CN111189505B (en) * | 2020-01-13 | 2020-10-30 | 江南大学 | Multipurpose integrated liquid small-dose weighing device and weighing method thereof |
| CN113375750B (en) * | 2021-06-10 | 2024-04-16 | 陕西延长石油（集团）有限责任公司 | Non-contact type oil quantity detection device and method for oil tank |
| CN114062195A (en) * | 2021-11-16 | 2022-02-18 | 攀钢集团攀枝花钢铁研究院有限公司 | Preparation method and device of powder wettability test sample |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57198843A (en) * | 1981-06-01 | 1982-12-06 | Toshiba Corp | Filling device for powder sample |
| JPH01141320A (en) * | 1987-11-27 | 1989-06-02 | Hitachi Ltd | Detecting device for sludge interface of sedimentation basin in purification plant |
| JPH08178729A (en) * | 1994-12-22 | 1996-07-12 | Nishiyama Seisakusho:Kk | Measuring apparatus of particle sedimentation volume |
| EP0770859A1 (en) * | 1995-10-27 | 1997-05-02 | Endress + Hauser Gmbh + Co. | Calibration method for filling level measurement |
| JP3427801B2 (en) * | 1999-11-19 | 2003-07-22 | 日本電気株式会社 | Liquid level measuring device and liquid level measuring method |
| ITBO20000257A1 (en) * | 2000-05-05 | 2001-11-05 | Steroglass S R L | DEVICE AND METHOD FOR FILLING CONTAINERS. |
| JP4368738B2 (en) * | 2004-05-19 | 2009-11-18 | ホソカワミクロン株式会社 | Device for measuring apparent specific gravity of powder |
| JP5247624B2 (en) * | 2009-08-11 | 2013-07-24 | 株式会社トーショー | Liquid medicine dispenser |
-
2011
- 2011-10-17 JP JP2011227850A patent/JP2013088231A/en active Pending
-
2012
- 2012-01-30 KR KR1020120009167A patent/KR20130041716A/en not_active Application Discontinuation
- 2012-01-31 CN CN2012100243574A patent/CN103047929A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308001A (en) * | 2013-05-17 | 2013-09-18 | 河海大学 | Device and method for measuring underwater AoR (Angle of Repose) of sediment based on optical imaging |
| CN103308001B (en) * | 2013-05-17 | 2016-01-06 | 河海大学 | Based on the measuring method of the silt underwater information warfare measurement mechanism of optical imagery |
| CN109883883A (en) * | 2019-04-19 | 2019-06-14 | 华南农业大学 | A kind of tap density apparatus for automatically measuring |
| CN110567404A (en) * | 2019-09-02 | 2019-12-13 | 苏州久越金属科技有限公司 | Automatic detection equipment for CCD of 5G communication product |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2013088231A (en) | 2013-05-13 |
| KR20130041716A (en) | 2013-04-25 |
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Application publication date: 20130417 |