CN207742058U - A kind of Machine-made Sand on-line measuring device - Google Patents
A kind of Machine-made Sand on-line measuring device Download PDFInfo
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- CN207742058U CN207742058U CN201721399100.1U CN201721399100U CN207742058U CN 207742058 U CN207742058 U CN 207742058U CN 201721399100 U CN201721399100 U CN 201721399100U CN 207742058 U CN207742058 U CN 207742058U
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Abstract
The utility model discloses a kind of Machine-made Sand on-line measuring devices, specifically include control module, sampling module, Weighing module, irradiation modules, sorting module, dispersed modules, Image Acquisition analysis module and recycling module；Control module is connected separately with the sampling module, Weighing module, irradiation modules and sorting module；Weighing module, irradiation modules, dispersed modules, Image Acquisition analysis module and recycling module, and the information such as particle shape grain size of automatic measurement return mechanisms sand sample product are passed sequentially through after sampling module securing mechanism sand sample product vertically downwards.A kind of Machine-made Sand on-line measuring device of the utility model, it can be achieved that mechanism fineness of sand and particle shape quick online detection, can reactive machanism sand production line in time Machine-made Sand grading situation, economic loss caused by avoidance mechanism sand grains path quality is unqualified.
Description
Technical field
The utility model is related to field of industry detection, more particularly to a kind of Machine-made Sand on-line measuring device.
Background technology
Main materials of the Machine-made Sand (or be aggregate) as asphalt and cement concrete, account for volume of concrete with
75% or more of quality, characteristic have important shadow to the mechanical property and durability of rheological property of concrete, maturing
It rings.Good aggregate grade grading makes concrete accumulation porosity reduce so that concrete workability is preferable, and what is possessed is steady
Qualitative and durability, and the dosage for reducing cement mortar reduces the cost of concrete.Particle shape characteristic also has very aggregate characteristics
It is big to influence, it is considered that the grain shape of coarse aggregate is optimal with ball or cube, with the increase of gill shape coarse aggregate content, mud
The workability for coagulating soil is deteriorated, and is unfavorable for pumping and construction.The Compressive Strength of disturbing of concrete is dropped also with the increase of elongated particles
It is low.For fine aggregate, the shape of particle there are great influence, more it is expected to obtain round to tightly packed in practical application
Grain, it not only contributes to tightly packed, is more advantageous to the performance of working performance of concrete.Therefore, the size distribution of aggregate, particle shape
Distribution is to evaluate the important indicator of aggregate quality.
Grain size and particle shape are the important parameter of Machine-made Sand quality management, the Machine-made Sand grain size of crusher production, particle shape quality
Irregular, being monitored to it is very important：Machine-made Sand grading and particle shape are detected, crusher can be broken
Broken effect is evaluated, and directive significance is played to the structure optimization of crusher；Before concrete stirring to fine aggregate grading and
Particle shape is detected, it can be ensured that the grain composition of fine aggregate meets national standard or professional standard.Rational aggregate grading and grain
Shape decreases the consumption of the cementitious materials such as pitch while reducing voidage, reduces the discharge of carbon dioxide indirectly, more
Add the production requirement for meeting China's sustainable development.
Chinese utility model patent CN104853168A discloses a kind of sandstone aggregate quality intelligent monitoring system, the system
In fine aggregate fineness modulus detection module still use sieve method, by sampling, drying, sieve sieve, screen out different grains
Then diameter aggregate measures weight, and the fineness modulus of sandstone is calculated by image processing module.The judgment method is mainly by thin
Aggregate size distinguishes, and still falls within screening detection mode, can not be detected to the particle shape of fine aggregate, can not adapt to
Current production management demand.
Currently, the granularity particle shape detection mode of Machine-made Sand used by the prior art, is required to first adopt Machine-made Sand
Sample then to sample test and analyze by grain, and mechanism fineness of sand, particle shape cannot detect simultaneously.This detection mode effect
Rate is relatively low, is unfavorable for the automation of Machine-made Sand production.Still lack it is a kind of can be completed at the same time mechanism fineness of sand, particle shape detection
Line automatic detection device.
Utility model content
The purpose of the utility model is to overcome the deficiencies of the prior art, provide a kind of Machine-made Sand on-line measuring device,
The quick online detection of achievable mechanism fineness of sand and particle shape, the Machine-made Sand grading situation of the timely reactive machanism sand production line of energy,
Economic loss caused by avoidance mechanism sand grains path quality is unqualified.
Technical solution adopted by the utility model to solve its technical problems is：
A kind of Machine-made Sand on-line measuring device, including control module, sampling module, Weighing module, irradiation modules, sorting mould
Block, dispersed modules, Image Acquisition analysis module and recycling module；Control module and the Weighing module, irradiation modules and sorting
Module is connected separately；
The sampling module is from securing mechanism sand sample product on Machine-made Sand production line, and by Machine-made Sand sample delivery to the title
Molality block, after the Weighing module obtains the initial weight of Machine-made Sand sample, by the irradiation modules to Machine-made Sand sample into
Row dehydration, and measure dehydrated weight again after the dehydration is completed；Dewatered Machine-made Sand sample is disperseed by the dispersed modules,
And pass through the dust in the sorting module removal mechanisms at work sand sample product；The Machine-made Sand sample being measured passes through the recycling module
Recycling, and weigh gumming weight；
Wherein, described image collection analysis module includes shooting unit, binary conversion treatment unit and line of apsides comparing unit,
The digital picture of the shooting unit shooting mechanism sand sample product, the binary conversion treatment unit detach prospect background, and
Extract several connected regions；The length for the connected region that the line of apsides comparing unit extracts binary conversion treatment unit
Diameter is compared, and obtains granularity particle shape information.
As a preferred embodiment, the sampling module includes a mechanical arm for obtaining sample, the end of the mechanical arm is set
It is useful for obtaining the spoon shape front end of Machine-made Sand sample.
As a preferred embodiment, the sampling module further includes moveable mechanical platform, described in the mechanical platform drive
Mechanical arm moves.The mechanical arm is sampled Machine-made Sand production line with the constant period under the control of mechanical platform.
As a preferred embodiment, the Weighing module includes the scale pan, scale handle and feeder motor, the scale handle and feeder motor point
Set on the both sides of the scale handle, and the feeder motor moves the scale pan by the scale grip strip and overturns, and makes Machine-made Sand sample
It is delivered to dispersed modules.
As a preferred embodiment, the irradiation modules are to be set to the panel heater of the Weighing module scale pan.
As a preferred embodiment, further including loading hopper, the loading hopper is set to the entry position of the dispersed modules,
And Machine-made Sand sample collection is entered into search dispersed modules.
As a preferred embodiment, the loading hopper is equipped with for adjusting and the height adjustment device of the spacing of dispersed modules.
As a preferred embodiment, the dispersed modules include dispersion pipe and several baffle plates, several baffle plates are staggeredly past
Be set to again in the dispersion pipe, and constitute for Machine-made Sand sample by reciprocal passage.
As a preferred embodiment, the sorting module includes wind turbine and dust catcher, the wind turbine and dust catcher are set to described
Two sides of dispersion pipe under shed, wind turbine and dust catcher cooperate the dust absorption in Machine-made Sand sample.
As a preferred embodiment, the air outlet of the wind turbine is equipped with the radome fairing for adjusting air-flow, the suction of the dust catcher
Dirt mouth is equipped with filter screen.
As a preferred embodiment, the mesh filter of the filter screen is less than 0.15mm.
As a preferred embodiment, Image Acquisition analysis module includes backlight, industrial camera, host and image acquisition areas；Institute
It states backlight, industrial camera and image acquisition areas and constitutes the shooting unit, the backlight carries out described image acquisition zone
Illumination, the industrial camera is in Machine-made Sand sample by shooting picture when described image acquisition zone；The binary conversion treatment unit
It is integrally disposed in the host with line of apsides comparing unit.The binary conversion treatment unit and line of apsides comparing unit pass through existing
Computer software module or independent picture processing chip can be realized.
The utility model has the beneficial effects that：
(1) water content of Machine-made Sand, the on-line checking of dust burdening, granularity and particle shape are realized.The utility model uses
The quick online detection of mechanism fineness of sand and particle shape can be achieved in detection in machine vision combination digital image processing techniques, can
The Machine-made Sand grading situation of timely reactive machanism sand production line, economic loss caused by avoidance mechanism sand grains path quality is unqualified,
And do not influence normal Machine-made Sand production, high efficient and reliable.
(2) utility model device has filtered out moisture and dust in measurement process, the moisture content of testing mechanism sand and contains
While powder amount, the precision of image method detection granularity particle shape is also improved；On the other hand, wind turbine sorting unit is used, is rejected
The influence that 0.15mm Machine-made Sands below detect granularity and particle shape.
The utility model is described in further detail with reference to the accompanying drawings and embodiments；But a kind of machine of the utility model
Sand on-line measuring device processed is not limited to embodiment.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model
Fig. 2 is the program flow diagram of the utility model
Fig. 3 is the image procossing and geometrical Characteristics Analysis flow chart of the utility model
Specific implementation mode
Embodiment：
Shown in Fig. 1 to Fig. 3, in order to realize, reflection present scheme sand produces the utility model of the utility model immediately
Line grading of aggregates, granularity, particle shape provide a kind of on-line measuring device of Machine-made Sand quality, specifically include：Mechanical arm 1, conveying electricity
Machine 2, scale handle 3, the scale pan 4, loading hopper 5, dispersion pipe 6, wind turbine 7, radome fairing 8, dust catcher 9, filter screen 10, PC machine 13, industry
Camera 14, retracting device 15, Weighing module 16, backlight 17, PLC controller 18.
The mechanical arm 1, is set to the top of Machine-made Sand conveyer belt, with preset frequency sample, by machine to be detected
Sand processed is put into the scale pan 4.
The scale pan 4, is set to one end of scale handle, the sampling for holding mechanical arm.Heat drying is equipped with above to fill
It sets, for moisture removal to be removed in Machine-made Sand to be detected drying, obtains the moisture content of Machine-made Sand to be detected.
The title handle 3, the quality for accurately measuring sampling.
The feeder motor 2, is set to the other end of scale handle, spoon scale is made to rotate a certain angle, and is fed to charging
Funnel.
The loading hopper 5 is located at the top of dispersed modules, and loading hopper and dispersion is arranged by height adjustment mechanism
The distance of module.For Machine-made Sand to be detected to be uniformly transferred to dispersed modules.
The dispersion pipe 6 can make Machine-made Sand good dispersion, to mechanism when so as to improve image procossing
The accuracy of identification of sand grains diameter.Baffle plate in dispersion pipe 6 accelerates under the effect of gravity by Machine-made Sand, by Machine-made Sand and divides
Hitting between separate tube wall, in the mutual collision between Machine-made Sand and Machine-made Sand and Machine-made Sand and dispersion pipe between baffle plate
Effect realizes that dispersion, the Machine-made Sand finally dropped out fall into image capture module with the state disperseed very much.
The wind turbine 7 is located at the lower section of dispersion pipe, and the wind speed of wind turbine is controlled by velocity regulator, and being used for will
0.15mm powder below and the Machine-made Sand of 0.15mm or more separate.
The radome fairing 8, is set on wind turbine 7, for the wind from wind turbine 7 out to be become at the uniform velocity beam wind.
The dust catcher 9 is located at the lower section of dispersion pipe 6, the left and right sides is respectively distributed to wind turbine 7, for drawing sky
Fine particle in gas.The pore size filter that the present embodiment takes is 0.15mm, specifically can carry out choosing value according to actual demand.
The filter screen 10 is located on dust catcher, for filtering out the Machine-made Sand for being less than 0.15mm, more than 0.15mm's
Machine-made Sand is blocked in except filter screen 10.
The backlight 17 is located at 6 lower section of dispersion pipe, using flat light source, for being irradiated in certain backlight 17
Under, the brightness of light source can be adjusted, convenient for obtaining that the aggregate image on more preferable boundary can be obtained.
The industrial camera 14 is mounted on lower section and the backlight offside of dispersion pipe, for tested Machine-made Sand into
Row Image Acquisition.Installation site will enable the field range of camera to cover the entire width range for disperseing conveyer belt, so that
The each particle that must disperse on conveyer belt is taken.The frame per second of selected industrial camera should meet Image Acquisition rate request, phase
Machine is connected by USB3.0 data lines with host computer, is transmitted data to host and is carried out image procossing.
The PC machine 13, is connected with industrial camera, obtains camera acquisition image information, passes through image procossing and geometry
Analysis module carries out analyzing processing to the image information of acquisition, then again by image real-time display module to mechanism fineness of sand and
Particle shape distribution results are shown.
The recycling module 15 is located at below Image Acquisition analysis module, for recycling Machine-made Sand to be detected.
The Weighing module 16, the lower section for being located at recycling module 15 can be by the mechanism of measurement granularity 0.15mm or more
Then chiltern amount calculates the powder containing quantity of Machine-made Sand.
The PLC controller 18, is connected with feeder motor 2, controls the unlatching, closing, rotating speed of feeder motor；With wind
Machine is connected, and controls the unlatching, closing, wind speed of wind turbine.
Image Acquisition analysis module first pre-processes the single image of acquisition, and pretreatment includes gray processing and image filter
Wave, gray processing can reduce the complexity of image, improve the speed of subsequent image processing procedure；Image filtering to granule boundary into
Row smoothing processing avoids burr small in particle outline from influencing the reduction of particle outline.Reuse Threshold segmentation separation of synechia
Particle reuses feature extraction, obtains the connected region of each fine aggregate in single image, extracts the shortest diameter of connected region,
And the ratio of longest and shortest diameter, the grain size and particle shape of each fine aggregate are obtained, the feature of the fine aggregate in single image is counted
Parameter, this statistical method can reduce accidental error.M statistics is carried out to n images, forms a measurement period, statistics
The percentage composition of the Machine-made Sand in each fineness modulus section in each period.
The size of aggregate is demarcated using the small ball of standard to the image after image characteristics extraction, specially：
Under identical image capture environment, image is acquired to standard bead known to several diameters；
Bead image calculates the pixel faces product value for obtaining each bead in image after image procossing is handled；
The true area value of each bead is compared with the pixel faces product value in image, the average value of ratio is as system
The calibration coefficient of system.
Since fine aggregate Machine-made Sand grain size is less than 4.75mm, therefore selected 3mm is as fine aggregate accuracy selection basis.Precision is set
Determine 0.01mm, by 0.01mm as pixel value, therefore CCD resolution ratio=3/0.01=300, i.e. CCD of imaging device 53 is extremely
There is the resolution ratio of 300 × 300 pixels less.It is thus determined that the CCD of the resolution ratio of 720 × 480 pixels, needs to improve times magnification
Number reduces the visual field so that the physical length in tested range only has 3mm, then each pixel represents 3/480=0.006mm, meets
Required precision conditions.
Based on the fine aggregate on-line measuring device, the utility model also provides a kind of fine aggregate online test method,
The step of detection method includes：
A sampling module) is used, a certain amount of Machine-made Sand sample is taken out from Machine-made Sand conveyer belt, by Weighing module, scale
Sample quality m0；Sample quality m1 is weighed again after having been dried by irradiation modules, obtains the moisture content of sample.
B) Machine-made Sand sample enters dispersed modules in a manner of whereabouts under the effect of gravity by sample introduction module.
C) enter the Machine-made Sand after dispersed modules, a part enters Image Acquisition analysis module, and another part is directly entered
Then recycling module weighs the quality m2 into recycling module part by Weighing module, obtains the powder containing quantity of Machine-made Sand.
D the Machine-made Sand for) entering Image Acquisition analysis module, the mechanism sand sample of falling motion state is obtained by industrial camera
Product digital picture, and Machine-made Sand sample digital picture is sent to computer.
E) the Machine-made Sand sample digital picture of acquisition is handled, uses mean filter method smoothed image first, secondly
Binary conversion treatment is carried out to image using the maximum variance between clusters in Threshold segmentation, is then used multiple in Morphological scale-space
Corrosion and expansion detach adhesion fine aggregate, finally carry out connected component labeling to multiple target areas, and extraction each connects
The feature in logical region.
F) the Machine-made Sand sample digital picture of acquisition is analyzed, according to step E) the obtained spy of each connected region
Sign, obtains the shortest diameter of connected region and the ratio of longest and shortest diameter, obtains the granularity and particle shape of each fine aggregate, counts
The characteristic parameter of fine aggregate in single image.
In the present embodiment, industrial camera acquisition frame number 30 per second is opened, in LabVIEW software platforms, at 30 images
The fine aggregate number that identifies later is managed to add up, in n images of statistics the particle size interval of fine aggregate in 0.15~0.3mm,
The fine aggregate number of 0.3~0.6mm, 0.6~1.18mm, 1.18~2.36mm, 2.36~4.75mm, count each fineness modulus
The percentage composition of the fine aggregate in section shows its statistic curve, and the statistical result obtained with this method compares such as individual system
Meter, further rejects accidental error.
Above-described embodiment only is used for further illustrating a kind of Machine-made Sand on-line measuring device of the utility model, but this practicality
It is novel to be not limited to embodiment, it is made by the above technical examples according to the technical essence of the present invention any simply to repair
Change, equivalent variations and modification, each falls in the protection domain of technical solutions of the utility model.
Claims (12)
1. a kind of Machine-made Sand on-line measuring device, it is characterised in that：Including control module, sampling module, Weighing module, drying mould
Block, sorting module, dispersed modules, Image Acquisition analysis module and recycling module；Control module and the Weighing module, drying mould
Block and sorting module are connected separately；
The sampling module is from securing mechanism sand sample product on Machine-made Sand production line, and by Machine-made Sand sample delivery to the mould of weighing
Block takes off Machine-made Sand sample by the irradiation modules after the Weighing module obtains the initial weight of Machine-made Sand sample
Water, and measure dehydrated weight again after the dehydration is completed；Dewatered Machine-made Sand sample is disperseed by the dispersed modules, and is led to
Cross the dust in the sorting module removal mechanisms at work sand sample product；The Machine-made Sand sample being measured is returned by the recycling module
It receives, and weighs gumming weight；
Wherein, described image collection analysis module includes shooting unit, binary conversion treatment unit and line of apsides comparing unit, described
Shooting unit shoots the digital picture of mechanism sand sample product, and the binary conversion treatment unit detaches prospect background, and extracts
Go out several connected regions；The line of apsides for the connected region that the line of apsides comparing unit extracts binary conversion treatment unit into
Row compares, and obtains granularity particle shape information.
2. a kind of Machine-made Sand on-line measuring device according to claim 1, it is characterised in that：The sampling module includes one
Mechanical arm for obtaining sample, the end of the mechanical arm are equipped with the spoon shape front end for obtaining Machine-made Sand sample.
3. a kind of Machine-made Sand on-line measuring device according to claim 2, it is characterised in that：The sampling module further includes
Moveable mechanical platform, the mechanical platform drive the mechanical arm movement.
4. a kind of Machine-made Sand on-line measuring device according to claim 1, it is characterised in that：The Weighing module includes scale
Disk, scale handle and feeder motor, the scale handle and feeder motor are divided into the both sides of the scale handle, and the feeder motor passes through institute
It states scale grip strip and moves the scale pan overturning, and make Machine-made Sand sample delivery to dispersed modules.
5. a kind of Machine-made Sand on-line measuring device according to claim 4, it is characterised in that：The irradiation modules are setting
In the panel heater of the Weighing module scale pan.
6. a kind of Machine-made Sand on-line measuring device according to claim 1, it is characterised in that：Further include loading hopper, institute
The entry position that loading hopper is set to the dispersed modules is stated, and Machine-made Sand sample collection is entered into search dispersed modules.
7. a kind of Machine-made Sand on-line measuring device according to claim 6, it is characterised in that：The loading hopper, which is equipped with, to be used
In the height adjustment device of adjusting and the spacing of dispersed modules.
8. a kind of Machine-made Sand on-line measuring device according to claim 1, it is characterised in that：The dispersed modules include point
Separate tube and several baffle plates, several baffle plates are staggeredly back and forth set in the dispersion pipe, and are constituted for Machine-made Sand sample
By reciprocal passage.
9. a kind of Machine-made Sand on-line measuring device according to claim 8, it is characterised in that：The sorting module includes wind
Machine and dust catcher, the wind turbine and dust catcher are set to two sides of the dispersion pipe under shed, and wind turbine and dust catcher cooperate
By the dust absorption in Machine-made Sand sample.
10. a kind of Machine-made Sand on-line measuring device according to claim 9, it is characterised in that：The air outlet of the wind turbine
Equipped with the radome fairing for adjusting air-flow, the suction inlet of the dust catcher is equipped with filter screen.
11. a kind of Machine-made Sand on-line measuring device according to claim 10, it is characterised in that：The mesh of the filter screen
Filter is less than 0.15mm.
12. a kind of Machine-made Sand on-line measuring device according to claim 1, it is characterised in that：Image Acquisition analysis module
Including backlight, industrial camera, host and image acquisition areas；Described in the backlight, industrial camera and image acquisition areas are constituted
Shooting unit, the backlight illuminate described image acquisition zone, and the industrial camera passes through described in Machine-made Sand sample
Picture is shot when image acquisition areas；The binary conversion treatment unit and line of apsides comparing unit are integrally disposed in the host.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727540A (en) * | 2017-10-27 | 2018-02-23 | 华侨大学 | A kind of Machine-made Sand on-line measuring device and online test method |
| CN111257151A (en) * | 2020-03-06 | 2020-06-09 | 厦门捷航工程检测技术有限公司 | Machine-made sand quality detection equipment |
| CN112710817A (en) * | 2020-12-18 | 2021-04-27 | 中山艾尚智同信息科技有限公司 | Test system for indoor building sand circulating batching and sand water content test method |
| CN112763698A (en) * | 2020-12-18 | 2021-05-07 | 中山艾尚智同信息科技有限公司 | Test system and test method for indoor concrete circulating batching |
| CN112791838A (en) * | 2021-01-30 | 2021-05-14 | 重庆三铭重工有限公司 | Automatic adjusting structure and adjusting method for feed inlet of vertical shaft type impact crusher |
-
2017
- 2017-10-27 CN CN201721399100.1U patent/CN207742058U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727540A (en) * | 2017-10-27 | 2018-02-23 | 华侨大学 | A kind of Machine-made Sand on-line measuring device and online test method |
| CN111257151A (en) * | 2020-03-06 | 2020-06-09 | 厦门捷航工程检测技术有限公司 | Machine-made sand quality detection equipment |
| CN112710817A (en) * | 2020-12-18 | 2021-04-27 | 中山艾尚智同信息科技有限公司 | Test system for indoor building sand circulating batching and sand water content test method |
| CN112763698A (en) * | 2020-12-18 | 2021-05-07 | 中山艾尚智同信息科技有限公司 | Test system and test method for indoor concrete circulating batching |
| CN112791838A (en) * | 2021-01-30 | 2021-05-14 | 重庆三铭重工有限公司 | Automatic adjusting structure and adjusting method for feed inlet of vertical shaft type impact crusher |
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