CN109781196A - A kind of contactless method for measuring mass flow on belt conveyor - Google Patents
A kind of contactless method for measuring mass flow on belt conveyor Download PDFInfo
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- CN109781196A CN109781196A CN201910113692.3A CN201910113692A CN109781196A CN 109781196 A CN109781196 A CN 109781196A CN 201910113692 A CN201910113692 A CN 201910113692A CN 109781196 A CN109781196 A CN 109781196A
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- belt conveyor
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Abstract
The invention discloses a kind of methods of mass flow on contactless measurement belt conveyor, comprising the following steps: a laser radar is arranged above the conveyer belt of belt conveyor, and makes the plane of scanning motion of laser radar perpendicular to the center line of conveyer belt；The speed of service of real-time detection conveyer belt；Using the profile of material on laser radar real time scan conveyer belt, and profile information input controller, the material sectional area of material is calculated using algorithm for controller, and material sectional area is recycled to obtain the instantaneous flow of material multiplied by the speed of service of conveyer belt.Through the above way, the method of mass flow on contactless measurement belt conveyor of the present invention, equipment installation and debugging are easier, what is manufactured and used is low in cost, precision can satisfy the demand of normal use, and performance is stablized, and measurement accuracy will not be reduced with the growth for using the time.
Description
Technical field
The present invention relates to the mass flow monitoring technology fields on conveyer, more particularly to a kind of contactless measurement
The method of mass flow on belt conveyor.
Background technique
Belt conveyor is also known as rubber conveyer or belt conveyor, the conveyer belt root of one fixed width on belt conveyor
It is moved according to frictional drive principle, is easy to draw the powdery taken, granular, small block-like low mill chiseling property material and packed suitable for conveying
Material, such as coal, rubble, sand, cement, chemical fertilizer and grain.
Currently, being by installing weighing belt under conveyer belt come real mostly to the measurement of mass flow on belt conveyor
It is existing, it has the disadvantage that
1. the intricate operation of weighing belt installation and debugging, high to the technical requirements of operator；
2. weighing belt involves great expense, the high cost of production of heap；
3. drift can be generated when weighing belt use, so that measurement accuracy is reduced with the increase for using the time, it is also necessary to often
Calibration.
In addition, application No. is 201711206888.4 applications for a patent for invention to disclose a kind of belt conveyor flow detection
Device and detection method, use video camera and laser range finder carries out flow detection, it is also necessary to which light compensating lamp back work relies on
The image of video camera obtains and processing, and the requirement to working environment is high, it is also necessary to manually carry out checking the determination of COEFFICIENT K, flow
Detection accuracy is difficult to ensure, needs to improve.
Summary of the invention
The invention mainly solves the technical problem of providing mass flows on a kind of contactless measurement belt conveyor
Method, promote flow detection precision and operation ease.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: a kind of contactless measurement is provided
The method of mass flow on belt conveyor, comprising the following steps:
One laser radar is set above the conveyer belt of belt conveyor, the conveyer belt of lower section is scanned；
The speed of service of real-time detection conveyer belt；
Using the profile of material on laser radar real time scan conveyer belt, and profile information input controller, controller is used
The material sectional area of material is calculated in algorithm, and material sectional area is recycled to obtain the wink of material multiplied by the speed of service of conveyer belt
Shi Liuliang.
In a preferred embodiment of the present invention, the algorithm includes following 4 parts:
A, conveyer belt profile is initialized, unloaded cross section product is calculated；
B, material profile, computational load sectional area are measured；
C, material sectional area is calculated；
D, mass flow is calculated.
In a preferred embodiment of the present invention, in the part A of the algorithm, point is projected as original with the laser of laser radar
The front of point, laser radar is y-axis, establishes rectangular coordinate system, is swept with the first line segment of 2 parallel y-axis handle by laser radar
The conveyer belt profile both ends and projection both ends of the conveyer belt profile in x-axis for retouching acquisition connect, and form the first closed area,
The area of first closed area is denoted as unloaded cross section product S0, calculation method is as follows:
Lidar measurement the result is that several from the same laser project point project light to barrier distance, every two
It projects and is spaced identical angle between light, the light projected according to laser radar is divided into the first closed area of monolith several
A continuous and adjacent subregion calculates separately the area of each subregion, then is added to obtain by the area of all subregions
The area of whole region, calculation formula are as follows:
。
In a preferred embodiment of the present invention, the scanning range of radar is set according to the width of conveyer belt, so that scanning
Range only covers conveyer belt.
In a preferred embodiment of the present invention, flat with 2 when there is material on conveyer belt in the part B of the algorithm
The second line segment of row y-axis connects projection of the compound-contoured and conveyer belt obtained by laser radar scanning in x-axis, group
At second closed area, the area S of the second closed area is calculatedi, SiS in the method and part A of calculating0Calculation method
Identical, the compound-contoured is that material profile adds uncovered conveyer belt profile.
In a preferred embodiment of the present invention, in the C portion of the algorithm, material sectional area is denoted as S, S=S0 - Si。
In a preferred embodiment of the present invention, in the part D of the algorithm, mass flow L, L=S*v, v are conveyings
The speed of service of band.
In a preferred embodiment of the present invention, the L is the volume flow of material, obtains the quality of material if necessary
Flow, need only be by volume flow multiplied by the density of material.
In a preferred embodiment of the present invention, the controller is industrial computer or single-chip microcontroller.
In a preferred embodiment of the present invention, the laser radar be two-dimensional laser radar or three-dimensional laser radar,
When laser radar is two-dimensional laser radar, the plane of scanning motion of laser radar works as laser radar perpendicular to the center line of conveyer belt
When for three-dimensional laser radar, the fixed plane of scanning motion perpendicular to belt centerline is selected.
The beneficial effects of the present invention are: mass flow on a kind of contactless measurement belt conveyor that the present invention points out
Method, equipment installation and debugging are easier, manufacture and use it is low in cost, precision can satisfy the need of normal use
It asks, and performance is stablized, measurement accuracy will not be reduced with the growth for using the time, the mode measured with tradition using weighing belt
It compares, the cost of equipment can be greatly lowered, reduce the complexity of rigging up and debugging, and improving measurement accuracy stability.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, in which:
Fig. 1 is conveyer belt and laser radar in the method for mass flow on contactless measurement belt conveyor of the invention a kind of
The structural schematic diagram of one preferred embodiment of relative position；
Fig. 2 is the structural schematic diagram for initializing conveyer belt profile；
Fig. 3 is the structural schematic diagram that unloaded cross section product calculates；
Fig. 4 is the structural schematic diagram for loading sectional area and calculating.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Fig. 1 ~ Fig. 4 is please referred to, the embodiment of the present invention includes:
A kind of contactless method for measuring mass flow on belt conveyor, comprising the following steps:
As shown in Figure 1, a two-dimensional laser radar is arranged above the conveyer belt of belt conveyor, and make laser radar
Perpendicular to the center line of conveyer belt, laser radar can be fixedly mounted, also may be mounted in mobile equipment the plane of scanning motion, adjust
Perfect square just, the scanning range of radar is set according to the width of conveyer belt, so that scanning range only covers conveyer belt, to reduce meter
The complexity of calculation and the scan efficiency for improving laser radar, laser radar and controller are wired or be wirelessly connected to transmit wheel
Wide information；
By the speed of service of the encoder real-time detection conveyer belt on belt conveyor, obtains real-time speed of service v and pass
Controller is given, controller selects single-chip microcontroller, at low cost；
Conveyer belt profile is initialized, unloaded cross section product is calculated, as shown in Fig. 2, projecting point with the laser of laser radar as origin, is swashed
The front of optical radar is y-axis, establishes rectangular coordinate system, is obtained with the first line segment of 2 parallel y-axis handle by laser radar scanning
Conveyer belt profile both ends connected with projection both ends of the conveyer belt profile in x-axis, form the first closed area, such as Fig. 2
In dash area, by the area of the first closed area be denoted as unloaded cross section product S0, calculation method is as follows:
As shown in figure 3, lidar measurement is the result is that several are projected the light projected to barrier from the same laser
Distance is spaced identical angle between every two injections light, and the light projected according to laser radar is the first enclosed area of monolith
Regional partition is several continuous and adjacent subregions, the area of each subregion is calculated separately, then by all subregions
Area is added to obtain the area of whole region, and calculation formula is as follows:
；
Measure material profile, computational load sectional area, as shown in figure 4, when there is material on conveyer belt, with the of 2 articles of parallel y-axis
Two line segments connect projection of the compound-contoured and conveyer belt obtained by laser radar scanning in x-axis, composition one the
Two closed areas calculate the area S of the second closed area such as the dash area in Fig. 4i, SiS in the method and part A of calculating0
Calculation method it is identical, the compound-contoured be material profile add uncovered conveyer belt profile；
Material sectional area is calculated, material sectional area is denoted as S, S=S0 - Si；
Mass flow is calculated, mass flow L, L=S*v can be shown in real time by the included or external display of controller
Showing mass flow, be conducive to the speed regulation of belt conveyor, realizes the control of feed flow, L at this time is the volume flow of material,
The mass flow of material is obtained if necessary, it need only be by volume flow multiplied by the density of material.
In conclusion a kind of contactless method for measuring mass flow on belt conveyor that the present invention points out, behaviour
Make simplicity, it is applied widely, it can apply and largely be equipped with belt conveyor, and have the ground of mass flow measurement demand
Side.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain is included within the scope of the present invention.
Claims (10)
1. a kind of method of mass flow on contactless measurement belt conveyor, which comprises the following steps:
One laser radar is set above the conveyer belt of belt conveyor, the conveyer belt of lower section is scanned；
The speed of service of real-time detection conveyer belt；
Using the profile of material on laser radar real time scan conveyer belt, and profile information input controller, controller is used
The material sectional area of material is calculated in algorithm, and material sectional area is recycled to obtain the wink of material multiplied by the speed of service of conveyer belt
Shi Liuliang.
2. the method for mass flow on contactless measurement belt conveyor according to claim 1, which is characterized in that
The algorithm includes following 4 parts:
A, conveyer belt profile is initialized, unloaded cross section product is calculated；
B, material profile, computational load sectional area are measured；
C, material sectional area is calculated；
D, mass flow is calculated.
3. the method for mass flow on contactless measurement belt conveyor according to claim 2, which is characterized in that
In the part A of the algorithm, point is projected as origin with the laser of laser radar, the front of laser radar is y-axis, establishes right angle
Coordinate system, with the first line segment of 2 parallel y-axis the conveyer belt profile both ends and conveyer belt profile obtained by laser radar scanning
Projection both ends in x-axis connect, and form the first closed area, and the area of the first closed area is denoted as unloaded cross section product
S0, calculation method is as follows:
Lidar measurement the result is that several from the same laser project point project light to barrier distance, every two
It projects and is spaced identical angle between light, the light projected according to laser radar is divided into the first closed area of monolith several
A continuous and adjacent subregion calculates separately the area of each subregion, then is added to obtain by the area of all subregions
The area of whole region, calculation formula are as follows:
。
4. the method for mass flow on contactless measurement belt conveyor according to claim 3, which is characterized in that
The scanning range that radar is set according to the width of conveyer belt, so that scanning range only covers conveyer belt.
5. the method for mass flow on contactless measurement belt conveyor according to claim 3, which is characterized in that
In the part B of the algorithm, when there is material on conveyer belt, obtained with the second line segment of 2 parallel y-axis handle by laser radar scanning
To the projection in x-axis of compound-contoured and conveyer belt connect, form second closed area, calculate the second enclosed area
The area S in domaini, SiS in the method and part A of calculating0Calculation method it is identical, the compound-contoured is material profile plus not
Capped conveyer belt profile.
6. the method for mass flow on contactless measurement belt conveyor according to claim 5, which is characterized in that
In the C portion of the algorithm, material sectional area is denoted as S, S=S0 - Si。
7. the method for mass flow on contactless measurement belt conveyor according to claim 6, which is characterized in that
In the part D of the algorithm, mass flow L, L=S*v, v are the speeds of service of conveyer belt.
8. the method for mass flow on contactless measurement belt conveyor according to claim 7, which is characterized in that
The L is the volume flow of material, obtains the mass flow of material if necessary, need only be by volume flow multiplied by the density of material
?.
9. the method for mass flow on contactless measurement belt conveyor according to claim 1, which is characterized in that
The controller is industrial computer or single-chip microcontroller.
10. the method for mass flow, feature exist on contactless measurement belt conveyor according to claim 1
In, the laser radar is two-dimensional laser radar or three-dimensional laser radar, when laser radar is two-dimensional laser radar, laser
The plane of scanning motion of radar perpendicular to conveyer belt center line, when laser radar is three-dimensional laser radar, select one it is fixed
Perpendicular to the plane of scanning motion of belt centerline.
Priority Applications (1)
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| CN201910113692.3A CN109781196A (en) | 2019-02-14 | 2019-02-14 | A kind of contactless method for measuring mass flow on belt conveyor |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110161518A (en) * | 2019-05-29 | 2019-08-23 | 北京华电力拓能源科技有限公司 | A kind of volume measuring system and method for drag conveyor |
| CN110282386A (en) * | 2019-07-15 | 2019-09-27 | 武汉摩林翰机电设备有限公司 | Belt conveyor bulk material detection device and its control method |
| CN111285052A (en) * | 2020-03-16 | 2020-06-16 | 河北金波嘉源测控技术有限公司 | Belt material flow control system |
| CN112896990A (en) * | 2021-03-17 | 2021-06-04 | 中信重工开诚智能装备有限公司 | Mining explosion-proof coal quantity detection system and method |
| CN112945323A (en) * | 2019-11-26 | 2021-06-11 | 大唐环境产业集团股份有限公司 | Coaling flow detection method |
| CN112964318A (en) * | 2021-02-08 | 2021-06-15 | 中国铁建重工集团股份有限公司 | Real-time detection method and detection system for belt conveyor muck volume flow |
| CN113008317A (en) * | 2021-02-26 | 2021-06-22 | 中冶南方工程技术有限公司 | Method for measuring real-time material piling and taking volume flow of cantilever type bucket-wheel stacker-reclaimer |
| CN113295219A (en) * | 2020-08-05 | 2021-08-24 | 湖南长天自控工程有限公司 | Material flow monitoring system and method for stock yard |
| CN113759387A (en) * | 2021-09-01 | 2021-12-07 | 河海大学 | Three-dimensional laser radar-based method for measuring wave-crossing amount of coastal wave-resistant building |
| CN114370728A (en) * | 2021-12-14 | 2022-04-19 | 合肥通用机械研究院有限公司 | Real-time monitoring method and device for snow making density of snow making machine and readable storage medium |
| EP4361577A1 (en) * | 2022-10-27 | 2024-05-01 | EBAWE Anlagentechnik GmbH | Method for determining the discharge of a distribution container |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110161518A (en) * | 2019-05-29 | 2019-08-23 | 北京华电力拓能源科技有限公司 | A kind of volume measuring system and method for drag conveyor |
| CN110282386A (en) * | 2019-07-15 | 2019-09-27 | 武汉摩林翰机电设备有限公司 | Belt conveyor bulk material detection device and its control method |
| CN112945323A (en) * | 2019-11-26 | 2021-06-11 | 大唐环境产业集团股份有限公司 | Coaling flow detection method |
| CN111285052A (en) * | 2020-03-16 | 2020-06-16 | 河北金波嘉源测控技术有限公司 | Belt material flow control system |
| CN113295219A (en) * | 2020-08-05 | 2021-08-24 | 湖南长天自控工程有限公司 | Material flow monitoring system and method for stock yard |
| CN112964318A (en) * | 2021-02-08 | 2021-06-15 | 中国铁建重工集团股份有限公司 | Real-time detection method and detection system for belt conveyor muck volume flow |
| CN113008317A (en) * | 2021-02-26 | 2021-06-22 | 中冶南方工程技术有限公司 | Method for measuring real-time material piling and taking volume flow of cantilever type bucket-wheel stacker-reclaimer |
| CN112896990A (en) * | 2021-03-17 | 2021-06-04 | 中信重工开诚智能装备有限公司 | Mining explosion-proof coal quantity detection system and method |
| CN113759387A (en) * | 2021-09-01 | 2021-12-07 | 河海大学 | Three-dimensional laser radar-based method for measuring wave-crossing amount of coastal wave-resistant building |
| CN113759387B (en) * | 2021-09-01 | 2023-12-22 | 河海大学 | Coast wave-proof building surmounting quantity measuring method based on three-dimensional laser radar |
| CN114370728A (en) * | 2021-12-14 | 2022-04-19 | 合肥通用机械研究院有限公司 | Real-time monitoring method and device for snow making density of snow making machine and readable storage medium |
| CN114370728B (en) * | 2021-12-14 | 2024-02-02 | 合肥通用机械研究院有限公司 | Real-time monitoring method and device for snow making density of snow making machine and readable storage medium |
| EP4361577A1 (en) * | 2022-10-27 | 2024-05-01 | EBAWE Anlagentechnik GmbH | Method for determining the discharge of a distribution container |
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