CN100449278C - Individual metering algorithm for belt conveyer - Google Patents
Individual metering algorithm for belt conveyer Download PDFInfo
- Publication number
- CN100449278C CN100449278C CNB2006101479860A CN200610147986A CN100449278C CN 100449278 C CN100449278 C CN 100449278C CN B2006101479860 A CNB2006101479860 A CN B2006101479860A CN 200610147986 A CN200610147986 A CN 200610147986A CN 100449278 C CN100449278 C CN 100449278C
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- feed bin
- unit
- time
- plough
- glassware
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Abstract
A strap conveyer separate pocket measuring utilizes the timely reading of the leather strap lever of the strap conveyer and the location and status parameters of each pocket, dividing the material flow of the leather strap lever into several subsections in terms of time unit, granting material unit to leather strap accumulated increase within unit time, and marking the leaving time of the material unit away from the leather strap lever on the material unit, deciding the pocket entry material unit through the status of the material leaver, to determine the weight of the material unit to realize the precise separate pocket metering for transmitted material. It enjoys high calculation precision, with small equipment investment, and highly worthwhile.
Description
Technical field
The present invention relates to a kind of belt conveyor individual metering algorithm, belong to the Measuring and testing technical field.
Background technology
Belt conveyor is a kind of high efficient and convenient means of transportation, be mainly used in bulk material distribution places such as harbour, mine, thermal power plant and cement mill, at present, the function of measuring of its convey materials is to realize by the electronic scales that is installed in above the main belt, can obtain cumulative amount and the instantaneous delivery that belt flows through material from the electronic scales instrument.Usually the every increase certain value of belt conveyer scale instrument cumulative amount (as 10 tons) sends a pulse to the PLC of defeated material stored program controlled, PLC just can obtain defeated material total amount by step-by-step counting, this metering method only is fit to single storehouse batching, for the individual metering of many storehouses feed proportioning system, also need the stored program controlled of defeated material is transformed.
Summary of the invention
Technical matters to be solved by this invention is: utilize the real-time reading of the belt conveyer scale of belt conveyor, and the position of each feed bin plough glassware and state, by the method for differential and integration, reach convey materials carried out accurate individual metering purpose.
In order to achieve the above object, the calculation step of belt conveyor individual metering algorithm of the present invention is as follows:
A. by between belt conveyer scale and n feed bin plough glassware apart from S
i(i=1,2 ..., n), the belt speed v of belt conveyor, calculate material flows to each feed bin from belt conveyer scale time T
i, with T
iGive each feed bin plough glassware; Described n feed bin plough glassware apart from belt conveyer scale farthest;
B. the inventory of belt conveyer scale of unit time t being flowed through is designated as the dU of differential material unit
k, dU
kK=0 during through belt conveyer scale, every through a unit interval t, dU
kValue give dU
K+1, then k is dU
kLeave the time of belt conveyer scale, the maximal value of k is T
n/ t;
C. getting each feed bin weight of material is W
i
D. read plough glassware state in real time every a unit time t;
E. if the plough glassware lifts, then the pairing feed bin weight of material of this plough glassware is constant;
F. if the plough glassware falls, then should plough the pairing T of glassware
i/ t gives k, and corresponding feed bin weight of material is:
W
i＝W
i+dU
k；
Wherein, n feed bin plough glassware is in full state all the time, and then this feed bin weight of material is:
W
n＝W
n+dU
Tn/t；
G. make dU
k=0.
Therefore, adopt algorithm of the present invention after, belt conveyor each feed bin feeding quantity along the line can be calculated dynamically in passing in time, finishes and just can come out the method for feeding quantity compared with adding the storehouse, and is more practical and convenient.And this algorithm can take into full account and change the storehouse when reinforced, and the differential material unit between each feed bin adds the storehouse problem, and measuring accuracy is higher, can reflect the actual situation that adds the storehouse accurately.
Use algorithm of the present invention in addition, only need the cumulative amount of collection belt conveyer scale, the status number amount signal of plough glassware just can realize individual metering, equipment investment is little, the cost performance height.
Description of drawings
Fig. 1 is the mathematical model figure of belt conveyor individual metering algorithm of the present invention;
Fig. 2 is the process flow diagram of belt conveyor individual metering algorithm of the present invention.
Embodiment
In mathematical model shown in Figure 1, V is the belt speed direction, and the corresponding n of belt conveyor n along the line feed bin only ploughs glassware, material from belt conveyer scale flow to plough glassware i (i=1,2 ..., n) time be T
i, because the belt speed substantially constant, the time approximately constant from belt conveyer scale to each coal plough can be divided into this time some unit time period t, then is designated as the dU of differential material unit in t flows through belt conveyer scale in the time material amount unit
kTherefore, the differential material unit number plough glassware can be similar to and thinks to fix from belt conveyer scale to each feed bin.Every through the t time diffusion material dU of unit
kThe coding carry once, i.e. dU
kValue give dU
K+1, each differential material unit self-timing upgrades, and then k is dU
kLeave the time of belt conveyer scale, the maximal value of k is T
n/ t.And dU
kFor the unit time t whole story twice belt conveyer scale cumulative amount poor, be the cumulative amount increment:
dU
k＝U
t-U
0
Each differential material unit has 2 attributes: expect first time of leaving belt conveyer scale of first weight and material.
The individual metering algorithm flow process is at first imported each coal plough location parameter T as shown in Figure 2
i, next imports the real-time weight W of each feed bin
iEnter the circulation of unit time then, read the belt conveyer scale instrumented data and obtain cumulative amount increment Delta U, owing to newly read a differential material unit, expect that first number must add 1, this algorithm adopts the method that dynamically redefines array that the first array number of material is increased, and promptly each unit time t composes the value of k material unit to k+1 material unit, material unit can be left the time value sign of belt conveyer scale like this in material unit.
Next step has judged whether that by the state that reads the plough glassware material unit enters feed bin, and the plough glassware falls then necessarily the first warehouse entry of material, the parameter T of this feed bin
i/ t is exactly the dU of material unit that falls into feed bin
kThe k value, just the k value is T
iThe material unit of/t falls into the i feed bin.After defining material unit entering the i feed bin, at first carry out the calculating that feed bin material amount increases, promptly on the basis of original coal bunker coal amount, add the gravimetric value W of this material unit
i=W
i+ dU
kThen to the dU on the belt
kCompose zero definition: make dU
k=0, show this material unit owing to fallen into feed bin, so weight is zero, this material unit section of reflection be unloaded on belt, perhaps it also can be ploughed glassware by other and shovel into corresponding feed bin in subsequent processes, but because material unit is zero, the material amount of feed bin can not change.
In the circulation of this element time-program(me), the feed bin that the plough glassware does not fall is not owing to expect that unit falls, and feed bin material amount does not change.
Last feed bin is not established the plough glassware usually, and the material unit that front feed bin plough glassware fails to shovel all enters this feed bin, and therefore illusory this feed bin has a plough glassware that falls all the time usually, and its feed bin material amount is:
W
n＝W
n+dU
Tn/t。
Through the cycle of a unit time t, the material amount of each feed bin has had new assignment, and when entering next unit during the time cycle, the metering of each feed bin will be that carry out on the basis with this new assignment.
Claims (2)
1. belt conveyor individual metering algorithm, it is characterized in that: algorithm steps is as follows:
A. by between belt conveyer scale and n feed bin plough glassware apart from S
iI=1,2 ..., n, belt conveyor belt speed v, calculate material flows to each feed bin from belt conveyer scale time T
i, with T
iGive each feed bin plough glassware; Described n feed bin plough glassware apart from belt conveyer scale farthest;
B. the inventory of belt conveyer scale of unit time t being flowed through is designated as the dU of differential material unit
k, dU
kK=0 during through belt conveyer scale, every through a unit interval t, dU
kValue give dU
K+1, then k is dU
kLeave the time of belt conveyer scale, the maximal value of k is T
n/ t;
C. getting each feed bin weight of material is W
i
D. read plough glassware state in real time every a unit time t;
E. if the plough glassware lifts, then the pairing feed bin weight of material of this plough glassware is constant;
F. if the plough glassware falls, then should plough the pairing T of glassware
i/ t gives k, and corresponding feed bin weight of material is:
W
i＝W
i+dU
k；
G. make dU
k=0.
2. individual metering algorithm as claimed in claim 1 is characterized in that: n feed bin plough glassware is in full state all the time, and then this feed bin weight of material is:
W
n＝W
n+dU
Tn/t。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101479860A CN100449278C (en) | 2006-12-26 | 2006-12-26 | Individual metering algorithm for belt conveyer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101479860A CN100449278C (en) | 2006-12-26 | 2006-12-26 | Individual metering algorithm for belt conveyer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1995929A CN1995929A (en) | 2007-07-11 |
| CN100449278C true CN100449278C (en) | 2009-01-07 |
Family
ID=38251077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101479860A Expired - Fee Related CN100449278C (en) | 2006-12-26 | 2006-12-26 | Individual metering algorithm for belt conveyer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100449278C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101941602B (en) * | 2010-08-09 | 2012-11-28 | 中国神华能源股份有限公司 | Automatic feed control method |
| CN101941600B (en) * | 2010-08-09 | 2013-01-30 | 中国神华能源股份有限公司 | Material type determination method for automatic feeding system |
| CN102494732A (en) * | 2011-12-06 | 2012-06-13 | 中冶长天国际工程有限责任公司 | Silo material level balance deviation detection method and system |
| CN103528646A (en) * | 2013-01-17 | 2014-01-22 | 上海发电设备成套设计研究院 | Calculating method of coal-conveying programmed control system individual warehouse metering |
| CN106779246A (en) * | 2017-01-09 | 2017-05-31 | 湖南华润电力鲤鱼江有限公司 | A kind of useful load of coal is calculated and distribution method and device |
| CN112050916B (en) * | 2020-06-22 | 2021-11-30 | 华东理工大学 | Method for measuring total mass of material based on vibration frequency of weighing carrier roller |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5380957A (en) * | 1990-11-14 | 1995-01-10 | Giles; Alan F. | Particle weighing apparatus and method |
| JPH10185662A (en) * | 1996-12-20 | 1998-07-14 | Ishida Co Ltd | Weighing and carrying device, and weighing and carrying method |
| EP1225429A1 (en) * | 2001-01-17 | 2002-07-24 | PAVAN S.p.A. | Metering method for substances and relative metering device |
| CN1584515A (en) * | 2004-05-27 | 2005-02-23 | 兰州理工大学 | Weight measuring system and method for belt conveyor |
-
2006
- 2006-12-26 CN CNB2006101479860A patent/CN100449278C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5380957A (en) * | 1990-11-14 | 1995-01-10 | Giles; Alan F. | Particle weighing apparatus and method |
| JPH10185662A (en) * | 1996-12-20 | 1998-07-14 | Ishida Co Ltd | Weighing and carrying device, and weighing and carrying method |
| EP1225429A1 (en) * | 2001-01-17 | 2002-07-24 | PAVAN S.p.A. | Metering method for substances and relative metering device |
| CN1584515A (en) * | 2004-05-27 | 2005-02-23 | 兰州理工大学 | Weight measuring system and method for belt conveyor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1995929A (en) | 2007-07-11 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090107 Termination date: 20111226 |