CN104515572B - Belt conveyer scale based on laser ranging - Google Patents
Belt conveyer scale based on laser ranging Download PDFInfo
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- CN104515572B CN104515572B CN201510014054.8A CN201510014054A CN104515572B CN 104515572 B CN104515572 B CN 104515572B CN 201510014054 A CN201510014054 A CN 201510014054A CN 104515572 B CN104515572 B CN 104515572B
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Abstract
The invention discloses a kind of belt conveyer scale based on laser ranging, belong to non-contact strap scale.The belt conveyer scale passes through laser scanning and ranging device scan surface of material, laser head is obtained to the distance value of surface of material, the cross sectional shape and area of material are obtained by distance value again, with reference to the belt real time execution speed obtained by belt speed measuring equipment, obtain the instantaneous volume and quality for the material that belt is transported, all instantaneous mass quality in random time section are summed, you can obtain the quality of material of transmission in this time.This belt conveyer scale device therefor and original paper are few, simple in construction, and measurement accuracy is high, safe and reliable to operation, implementation cost is low, are easy to the popularization and application in each travelling belt uses industry.
Description
Technical field
The present invention relates to a kind of belt conveyer scale based on laser ranging, the system is related to the field such as laser ranging and communication.
Background technology
Travelling belt is the visual plant of material short-distance transport, is widely used in the production such as mine, agricultural, food, tobacco
Industry.The quality of accurate measurement Belt Conveying material for production automatically control, output statistics, control production cost have actively
Important meaning.The belt measurement in actual production mainly uses belted electronic balance and controlled nucleon operated belt conveyor scale at present.Belted electronic balance
It is the pressure using belt caused by pressure sensor measurement weight of material to sensor, so as to realize the survey to weight of material
Amount.Belted electronic balance uses contact type measurement, complicated in mechanical structure, including carrying roller, lever and various bindiny mechanisms, mechanical device
Numerous, the failure of any device can all influence the precision of measurement.So existing, measurement accuracy is low, and fault rate is high, safeguards complexity etc.
Problem.Controlled nucleon operated belt conveyor scale is that gamma-rays is passed through caused by different-thickness material by projecting gamma-rays to the material on belt
Decay is different, gamma intensity after detecting through material, and it is i.e. available to bring intensity into the formula related to material component, density
Material thickness in directions of rays, controlled nucleon operated belt conveyor scale are exactly that the measurement to material is realized by this general principle.Nucleon belt
Scale uses non-contact measurement, overcomes some drawbacks existing for belted electronic balance, but still suffers from that precision is low, radioactive sources safety pipe
Manage, demarcate the problems such as complicated.The method that also principle of some image procossings passed through carries out belt material measurement at present, but by
In the reason in terms of precision and exploitativeness, more in theory stage, product is not formed.
Therefore, need that a kind of measurement accuracy is high, simple and reliable, cost is low at present, travelling belt material convenient to carry out is surveyed
The new method and device of amount.
The content of the invention
Present invention aims at a kind of measurement accuracy of offer is high, simple and reliable, cost is low, contactless belt conveyer scale, sheet
The belt conveyer scale of invention mainly form including：Laser scanning and ranging unit, belt speed measuring unit, man-machine interaction unit, data processing
Unit and communication unit；Laser scanning and ranging unit is arranged on above travelling belt, and scanning plane should be symmetrical perpendicular to belt
Axis and belt bottom section, scanning range should be greater than belt width, and each scan period can obtain one group of data, each data
Laser head is represented to the distance value of surface of material, by this group of data it is reducible go out belt and material section shaped upper part；Skin
Band tests the speed unit on belt roller, for obtaining belt movement speed；Man-machine interaction unit includes button and shown
Display screen, button are used to be configured operation to measurement relevant parameter, and display screen is shown for data；Communication unit is responsible for collection and swashed
The scan data of optical scanning range cells equipment and the signal of belt speed measuring unit, and by data processing unit result
Miscellaneous equipment is sent to by COM1；Scan data and belt of the data processing unit to laser scanning and ranging unit
The signal of unit of testing the speed is handled, and obtains the volume and quality of the material of belt-conveying.
Material measurement comprises the following steps that：
1. before measurements, being first scanned to unloaded belt using laser scanning and ranging equipment, unloaded belt is obtained
Section shaped upper part data, be recorded in data processing unit.
2. communication unit receives the skin that the range data sent by laser scanning and ranging equipment and belt speed measuring equipment are sent
Belt speed degrees of data, and data are reached into data processing unit.
3. scan data and pre-recorded belt zero load scan data are carried out additive operation by data processing unit, obtain
Material cross section profile data.
4. the interval time of cross section profile data, belt speed and gathered data is carried out into multiplying, this interval is obtained
The instantaneous mass volume that travelling belt transmits in time.
5. volume of material and material density are carried out into multiplying obtains instantaneous mass quality.
6. all instantaneous mass quality in random time section are summed, you can obtain the material matter of transmission in this time
Amount.
7. quality of material data are sent to miscellaneous equipment by the COM1 of communication unit；And pass through man-machine interaction list
The display screen of member shows related data.
Brief description of the drawings
Belt conveyer scale structural representations of the Fig. 1 based on laser ranging.
Fig. 2 equipment scheme of installations.
Fig. 3 material measurement process schematic diagrames.
Fig. 4 laser scanning and rangings demarcate gathered cross-section data schematic diagram.
The instantaneous cross-section data schematic diagram that the measurement of Fig. 5 laser scanning and rangings is gathered.
Fig. 6 additive operations obtain the instantaneous cross-section data schematic diagram of material.
The instantaneous cross-section data schematic diagram of Fig. 7 materials.
Embodiment
Implement as shown in Figure 1 in example, the belt conveyer scale composition includes：
1. laser scanning and ranging unit (101), 5 meters of laser scanning and ranging instrument (102) is more than using ranging distance.
2. belt speed measuring unit (103), using photoelectric coding tachogenerator (104), with belt roller axle directly or
Connected, the rotating speed of real-time measurement cylinder is connect, produces the pulse signal directly proportional to drum rotation speed；Also digital skin can directly be selected
Band tachogenerator can directly export belt speed data.
3. communication unit (105), including input port (106) and input port (107), input port part receives laser
The scan data that scanning rangefinder (102) is sent, and receive tachogenerator (104) signal or data.Output port part will
Data are sent to miscellaneous equipment by data network, the network port or live port can be used, in addition to cable port, it is possible to use
Communication.
4. man-machine interaction unit (108), including display screen (109) and button (110), display screen uses two row dot matrix types
LCD LCD MODULEs, ken size：60.5 × 18.0mm, 54.8 × 18.3m.Design uses 4 buttons, using independently pressing
Keyed keyboard, with reference to the display interface of display screen, realize the function that operation is configured to measurement relevant parameter.
5. data processing unit (108), including storage chip (109) and processor (110), storage chip uses 1
24C512,24C512 use I2C bus communications, real using two standard I/O interfaces plus pull-up resistor connection SCL and SDA pins
Existing processor and storage chip Control on Communication.The parameter relevant with measurement in storage chip primary storage, and demarcation space-time
Carry the cross-section data of belt.The MSP430F147 single-chip microcomputers of TI companies can be selected in processor (113).16 RISC knots of the model
Structure, there is 32k Flash, 1kRAM；And there is abundant piece inner peripheral module to be easy to provide hardware supported for communication unit, it is built-in
Multiplier is easy to data operation to handle.
6. auxiliary circuit (114), in addition to above-mentioned each unit equipment, device auxiliary circuit also including power circuit etc.
(114) and related elements, support is provided for each unit equipment component.
The installation site of laser scanning and ranging unit and belt speed measuring unit is with reference to figure 2：
The surface of the axis of symmetry of laser scanning and ranging instrument 1. (12) every travelling belt, setting height(from bottom) should be higher than that material
Highly；The scanning plane of laser scanning and ranging equipment should be perpendicular to belt Runtime Infrastructure (201) and belt bottom section simultaneously
(202), and it need to ensure that scanning finding range is more than belt width；.
2. the axle of the part of data acquisition connection roller (203) of belt speed measuring equipment (104).
The specific works step of the belt conveyer scale is as follows：
1. whether judgment means have demarcated (301), do not demarcate such as, then carry out unloaded demarcation (302), such as having demarcated can be straight
Connect measurement.
2. zero load demarcation (302), need to be scanned to unloaded belt using laser scanning and ranging instrument during demarcation, obtain unloaded
The section shaped upper part data A of beltb, as shown in figure 4, being recorded in storage chip, every time automatically by stored data during start
Call in register.
3. the input port of communication unit receives laser scanning and ranging device scan and obtains material on belt when (303) measuring
Section shaped upper part data Ai, as shown in figure 5, receiving belt speed measuring unit up-delivering signal or data simultaneously, obtain real
When belt translational speed vi, the v if tachogenerator output signal is pulse signali=spL π, s is between pulse in formula
Every the time, p is that sensor resolution is the pulse sum to circle, and L is diameter of cylinder.
4. scan data and the belt zero load scan data of mark time recording (304) are subjected to additive operation Si=Ab-Ai,
As shown in Figure 6；Computing obtains instantaneous mass cross-section data Si, as shown in Figure 7.
5. (305) instantaneous cross section profile data are multiplied multiplied by with the interval time Δ of gathered data with the belt speed obtained
ti, obtain the instantaneous mass measurement volume V that travelling belt transmits in this interval timei, Vi=Si·vi·Δti；Instantaneous mass body
Product is multiplied by material density q, that is, obtains instantaneous mass mass Mi, Mi=Vi·q。
6. (306) by the instantaneous mass mass M in the belt section timeiIt is cumulative, you can to obtain this time of the belt
The quality of material Z of interior transmissionT,N is that statistical server is swept to laser scanning and ranging equipment in period T in formula
Retouch the gathered data number of data, Δ tiThe smaller bigger measurement accuracy of then N is higher.
7. quality of material data (307) are sent to miscellaneous equipment by the COM1 of communication unit；And shown by LCD
Display screen shows belt speed and the quality of material of accumulation transmission.
Claims (6)
- A kind of 1. belt conveyer scale based on laser ranging, it is characterised in that：The belt conveyer scale mainly include laser scanning and ranging unit, Belt speed measuring unit, man-machine interaction unit, data processing unit and communication unit；Laser scanning and ranging unit is arranged on fortune Above defeated belt, for obtaining material cross-section data；Belt speed measuring unit connects belt roller axle, for obtaining belt fortune Dynamic speed；Man-machine interaction unit includes button and display screen, and button is used to be configured operation, display screen to measurement relevant parameter Shown for data；Communication unit is responsible for gathering the scan data and belt speed measuring unit of laser scanning and ranging unit Signal or data, and data processing unit result is sent to miscellaneous equipment by COM1；Data processing unit The signal or data of scan data and belt speed measuring unit to laser scanning and ranging unit are handled, and obtain skin The volume and quality of material with transport；The specific works step of the belt conveyer scale is as follows：(1) judge whether belt conveyer scale has been demarcated, do not demarcate such as, then unloaded demarcation is carried out to belt conveyer scale into step (2), such as Demarcation, then measure into step (3)；(2) unloaded belt is scanned using laser scanning and ranging instrument, obtains the section shaped upper part data of unloaded belt, remembered Record is in data processing unit；(3) input port of communication unit receives the section shaped upper part that laser scanning and ranging device scan obtains material on belt Data, while belt speed measuring unit up-delivering signal or data are received, obtain real-time belt translational speed；(4) the belt zero load scan data of scan data and mark time recording is subjected to additive operation and obtains instantaneous mass number of cross-sections According to；(5) instantaneous cross-section data is multiplied with the belt speed of acquisition multiplied by with the interval time of gathered data, when obtaining this interval The instantaneous mass measurement volume of interior travelling belt transmission；Instantaneous mass volume is multiplied by material density, that is, obtains instantaneous mass matter Amount；(6) the instantaneous mass quality in the belt section time is added up, you can obtain the thing of transmission in this time of the belt Expect quality；(7) quality of material data are sent to miscellaneous equipment by the COM1 of communication unit, and pass through man-machine interaction unit Show belt speed and the quality of material of accumulation transmission.
- 2. belt conveyer scale as claimed in claim 1, it is characterised in that：Laser scanning and ranging equipment is arranged on every travelling belt The surface of the axis of symmetry, setting height(from bottom) should be higher than that height of materials；The scanning plane of laser scanning and ranging equipment should be perpendicular to simultaneously The belt axis of symmetry and belt bottom section, and need to ensure that scanning finding range is more than belt width.
- 3. belt conveyer scale as claimed in claim 1, it is characterised in that：Gathered in advance before measurement and store laser scanning and ranging unit Scan data of the equipment in belt zero load.
- 4. belt conveyer scale as claimed in claim 1, it is characterised in that：Data processing unit processing laser scanning and ranging instrument output Data, scan data and pre-recorded belt zero load scan data are subjected to additive operation, obtain material number of cross-sections on belt According to.
- 5. belt conveyer scale as claimed in claim 1, it is characterised in that：What it is such as the transmission of belt speed measuring unit is pulse signal, Data processing unit obtains belt speed according to signal frequency and diameter of cylinder.
- 6. belt conveyer scale as claimed in claim 4, it is characterised in that：Data processing unit is by cross-section data, belt speed and adopts Collect the instantaneous mass volume that the product of the interval time of data transmits as travelling belt in this interval time；By volume of material and thing Expect the product of density as instantaneous mass quality；All instantaneous mass quality in random time section are summed, you can obtain the section The quality of material of transmission in time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510014054.8A CN104515572B (en) | 2015-01-13 | 2015-01-13 | Belt conveyer scale based on laser ranging |
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| CN201510014054.8A CN104515572B (en) | 2015-01-13 | 2015-01-13 | Belt conveyer scale based on laser ranging |
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| CN104515572B true CN104515572B (en) | 2017-11-28 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107179108A (en) * | 2016-03-10 | 2017-09-19 | 内蒙古大学 | Loading machine meter side and weight calculation method and device based on laser scanning and ranging technology |
| CN107128661B (en) * | 2017-05-17 | 2020-01-14 | 安徽理工大学 | Non-contact belt conveying weighing and deviation warning device |
| CN106989803B (en) * | 2017-05-17 | 2019-12-24 | 安徽理工大学 | Belt feeder non-contact type weighing and deviation warning equipment |
| CN107727207A (en) * | 2017-09-19 | 2018-02-23 | 安凯 | A kind of optics belt conveyer scale and its measuring method |
| CN108414064B (en) * | 2018-06-01 | 2023-06-09 | 成都睿畜电子科技有限公司 | Remote sensing type material tower weighing equipment and weighing method |
| CN110031069A (en) * | 2019-04-12 | 2019-07-19 | 东北大学 | A kind of movable weighing belt and application method based on laser ranging |
| CN110902313A (en) * | 2019-12-05 | 2020-03-24 | 天津成科传动机电技术股份有限公司 | Belt pulley contour detection method, device, equipment and storage medium, and conveyor belt flow detection method, device and equipment |
| CN114111921A (en) * | 2021-11-19 | 2022-03-01 | 中国铁建重工集团股份有限公司 | Method and system for monitoring belt slag discharge volume flow of heading machine |
| CN116022524A (en) * | 2022-12-12 | 2023-04-28 | 秦皇岛燕大滨沅科技发展有限公司 | Method for detecting blocking of transfer funnel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2795136Y (en) * | 2005-01-31 | 2006-07-12 | 武汉钢铁(集团)公司 | Laser monitor of bulk material for belt conveyer |
| DE102005018395A1 (en) * | 2005-04-20 | 2006-10-26 | Uhlmann Pac-Systeme Gmbh & Co Kg | Conveyor |
| CN103738698A (en) * | 2013-12-20 | 2014-04-23 | 淮南万泰电子股份有限公司 | Alignment speed measurement device of mining belt conveyor |
| CN104019873A (en) * | 2014-05-22 | 2014-09-03 | 南京络联测控技术有限公司 | Movable material stack automatic metering system |
| CN104006869A (en) * | 2014-06-04 | 2014-08-27 | 上海诺尚信息技术有限公司 | Laser weighing system for belt conveying and weighing method thereof |
| CN204535825U (en) * | 2015-01-13 | 2015-08-05 | 中国矿业大学(北京) | Based on the belt conveyer scale of laser ranging |
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