CN102680066A - Suspension amount compensating control method and system for materials at stirring station - Google Patents
Suspension amount compensating control method and system for materials at stirring station Download PDFInfo
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- CN102680066A CN102680066A CN2012101847904A CN201210184790A CN102680066A CN 102680066 A CN102680066 A CN 102680066A CN 2012101847904 A CN2012101847904 A CN 2012101847904A CN 201210184790 A CN201210184790 A CN 201210184790A CN 102680066 A CN102680066 A CN 102680066A
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Abstract
The invention discloses a suspension amount compensating control method and system for materials at a stirring station. The suspension amount compensating control method comprises the following steps of: firstly, establishing and storing a corresponding relation table of a material flow coefficient K and a suspension amount value in advance; secondly, detecting the important parameters of the materials in a weighing hopper at current time; judging whether material weighting is finished or not according to the important parameters of the materials in a weighing device; and if so, calculating the material flow coefficient K at the current time, and selecting the suspension amount value at the current state in the corresponding relation table according to the material flow coefficient K at the current time, so that the suspension amount value is used as a compensation value for calculating the weight of the materials in the weighing hopper. The suspension amount compensating control method can be used for detecting a material flow condition in real time, and selecting the proper suspension amount value as the compensation value of the suspension amount at the current time from the corresponding relation table according to an actual condition, so that the dynamic precision of the material weighing is greatly improved, the burdening accuracy is improved, and the improvement of the product quality is facilitated.
Description
Technical field
The present invention relates to mixing plant proportioning accuracy control technology field, particularly a kind of suspension amount compensating control method and system of mixing plant material.
Background technology
Bituminous mixing plant is a kind of mixing plant system of typical production asphalt, it with multiple aggregate as requested mixed in the asphaltic products batching that obtains meeting the use standard together.
Prior art medium pitch product batching is generally carried out dynamic weighting with various materials (stone of plurality of specifications, sand, breeze, recovery powder, pitch, adjuvant etc.) according to prescription through the mixing plant automatic control system, sends into stirred pot then and stirs into asphalt.It is made up of subsystems such as bin stock, first grating, oven dry, lifting, screening, batching, stirring, the storages of finished product material.Owing to restricted by a plurality of links, this system has the following characteristics: 1) measurand is in the nonstatic state.2) be a kind of online automatic measurement system.3) measure fast at short notice, require system that good time resolution characteristics are arranged.
That this feed proportioning system belongs to is non-linear, the time become and do not allow the system of overshoot, influence vibrations, suspension amount and overshoot that system's batching speed and proportioning accuracy the most important thing is hopper.The suspension amount is because the raw material in the motion promptly enters into scale bucket stroke from dispenser, does not also arrive the feed stream of the raw material charge level of scale bucket.The starting material ten minutes that asphalt blending station uses is lack of standardization, thereby causes material content of the same race to alter a great deal in the different moment, since the random variation of the unstable so that suspension amount of streams, the adjacent two dish suspension amounts in front and back in the time of mostly.This has brought bigger difficulty for the control of proportioning accuracy.And owing to claim charge level height in the bucket along with how many differences of weigh are also changing, prescription is different, and the height of same weight charge level is also different.
Calculate main suspension amount compensation process for the compensation of suspension amount in the prior art and realize through fixed value, the suspension amount compensation process of fixed value be rule of thumb with the equipment requirements precision, set a value in advance, compensate as the suspension value of each batching.This method suspension value is fixed, and can not satisfy the materials flow that changes constantly, therefore promptly can not satisfy the needs of high precision weighing, can not adapt to the variation of asphalt blending station materials flow.
Therefore, how a kind of suspension amount compensating control method of mixing plant is provided, it can compensate the suspension amount according to real-time materials flow situation, improves the material weighing precision, is the technical matters that those skilled in that art need to be resolved hurrily.
Summary of the invention
The object of the invention is intended to for a kind of suspension amount compensating control method of mixing plant is provided, and it can compensate the suspension amount according to real-time materials flow situation, improves the material weighing precision.The another object of the present invention purport is the suspension amount compensation control system that a kind of mixing plant is provided in addition.
For solving the problems of the technologies described above, the present invention provides a kind of suspension amount compensating control method of mixing plant material, and mixing plant is provided with the meausring apparatus of weighing material, and this method may further comprise the steps:
101, set up and store the mapping table of materials flow COEFFICIENT K and suspension value in advance;
102, detect the weight parameter of material in the current time meausring apparatus;
103, judge according to the weight parameter of material in the said title bucket whether material weighing closes to an end, and is, then execution in step 104; Not, then execution in step 102;
104, calculate current time materials flow COEFFICIENT K according to the current weight parameter that detects; From said mapping table, choose the suspension value of current time then according to said current time materials flow COEFFICIENT K, with the offset of this suspension value as weight of material in the calculating meausring apparatus.
Preferably; In the step 101, set up and store the mapping table of materials flow COEFFICIENT K and suspension value under the different charge level height values in advance, wherein; The charge level height value is when accomplishing material weighing according to intended target, the height in the meausring apparatus between material charge level and the aggregate bin discharging opening;
And comprise the steps: between step 101 and the step 102
When 1011, accomplishing according to this predetermined material weighing in the meausring apparatus charge level of material choose the materials flow COEFFICIENT K of correspondence and the mapping table of suspension value to the height value of the discharging opening of aggregate bin.
Preferably, in step 103, when judged result when being, also carry out following steps:
1031, close the door of aggregate bin.
Preferably; In the step 102; Said weight parameter comprises the general assembly (TW) of the interior material of title bucket of the said meausring apparatus of current time; In the step 104, the increment of material total weight weight of material in claiming to struggle against according to the general assembly (TW) of material in the current time meausring apparatus and previous moment, and this increment carried out Difference Calculation and then obtain the materials flow COEFFICIENT K of current time.
Preferably, in the step 101, the suspension value in the said mapping table obtains through the statistical stacking averaging method.
Preferably, mixing plant is provided with aggregate bin, and title bucket or the LOAD CELLS said aggregate bin on of said current time materials flow COEFFICIENT K through being arranged at said meausring apparatus obtains.
The weight parameter of material in the suspension amount compensating control method of mixing plant material provided by the present invention is claimed to struggle against through the detection current time; Can flow situation by real-time detecting material; And can from mapping table, choose the offset of suitable suspension value according to actual conditions as suspension this moment amount; With select for use fixing suspension amount to be worth by way of compensation in the prior art to compare; Method provided by the present invention has improved the material metage dynamic accuracy to a great extent, thereby improves the degree of accuracy of batching, helps improving the quality of product.
On the basis of said method, the present invention also provides a kind of suspension amount compensation control system of mixing plant material, and this system comprises detecting element, controller;
Said detecting element is used to detect the weight parameter of material in the current time meausring apparatus;
Said controller; Be used to store the materials flow COEFFICIENT K of foundation in advance and the mapping table of suspension value; And judge the material weighing state according to the weight parameter of material in the said meausring apparatus, when material weighing closes to an end, calculate current time materials flow COEFFICIENT K; From said mapping table, choose the suspension value of current time then according to said current time materials flow COEFFICIENT K, this suspension value is claimed the offset of bucket material weight as calculating.
Preferably, said detecting element is the LOAD CELLS that is used to obtain weight of material in the said meausring apparatus.
Preferably, said LOAD CELLS is arranged on the title bucket of said meausring apparatus.
Preferably, also comprise batching topworks, be used to receive the steering order of controller, and carry out the door that aggregate bin was opened or closed to above-mentioned steering order; Controller judges when material weighing closes to an end that the extremely said batching of the steering order topworks of aggregate bin door is closed in output.
Because of the suspension amount compensation control system of this mixing plant material carries out work according to the suspension amount compensating control method of above-mentioned mixing plant material, so this system also has the technique effect of above-mentioned compensating control method.
Description of drawings
Fig. 1 is the process flow diagram of the suspension amount compensating control method of mixing plant among first kind of embodiment of the present invention;
Fig. 2 is the process flow diagram of the suspension amount compensating control method of mixing plant among second kind of embodiment of the present invention.
Fig. 3 is the suspension amount compensation control system block diagram of mixing plant in an embodiment of the present invention.
Embodiment
Core of the present invention is the suspension amount compensating control method that a kind of mixing plant is provided, and it can compensate the suspension amount according to real-time materials flow situation, improves the material weighing precision.In addition, another core of the present invention is the suspension amount compensation control system that a kind of mixing plant is provided.
In order to make those skilled in the art understand technical scheme of the present invention better, the present invention is done further detailed description below in conjunction with the suspension amount compensating control method of mixing plant and control system and accompanying drawing and specific embodiment.
Be without loss of generality, introduce the present technique scheme, it will be understood by those skilled in the art that the technical scheme that this paper provides also goes in the feed proportioning system of unclassified stores with the example that is compensated for as of suspension amount in the bituminous mixing plant batching.
Please refer to Fig. 1, Fig. 3, Fig. 1 is the process flow diagram of the suspension amount compensating control method of mixing plant among first kind of embodiment of the present invention; Fig. 3 is the suspension amount compensation control system block diagram of mixing plant in an embodiment of the present invention.
Bituminous mixing plant can be produced asphalt, modified asphalt mixture, chromatic bitumen mixture, satisfies the needs of building highway, standard highway, town road, airport, harbour etc. fully.Bituminous mixing plant mainly comprises the aggregate bin that is used to store material, the systems such as Weighing system that are used for the weighing material; Material in the aggregate bin is accomplished batching through Weighing system; Wherein the accuracy of batching is related to the service property (quality) of asphaltic products; Wherein, the estimation of blending process suspension amount has great importance.
The invention provides a kind of suspension amount compensating control method of mixing plant material; Mixing plant is provided with the meausring apparatus of weighing material; The weighing of material is mainly accomplished in the title bucket of meausring apparatus; Therefore the material in the meausring apparatus described in this paper is mainly censured the material in the bucket, and this method may further comprise the steps:
S101, set up and store the mapping table of materials flow COEFFICIENT K and suspension value in advance;
The materials flow COEFFICIENT K mainly representes to flow into the speed of claiming the materials flow of material in the bucket; This materials flow coefficient can record through LOAD CELLS; Suspension value in this mapping table; Operating personnel can rule of thumb set fixed value, also can use the average method of statistical stacking to obtain experimental result through repeatedly experiment.
Generally, the materials flow COEFFICIENT K is big more, and the suspension amount is big more.
Materials flow COEFFICIENT K and suspension value can be one to one in this mapping table, that is to say the corresponding suspension value of each concrete K, certainly, also can be the interval corresponding suspension values of a certain materials flow COEFFICIENT K.
Wherein, can store in this mapping table under the different formulations situation of same mixing plant, the pairing suspension value of materials flow COEFFICIENT K also can only be stored under a kind of prescription situation, the suspension value that the materials flow COEFFICIENT K is corresponding.Should be appreciated that the mapping table that forms corresponding materials flow COEFFICIENT K and suspension value based on different mixing plants does not constitute the restriction to the application's protection domain.
The weight parameter of material in S102, the detection current time meausring apparatus;
This weight parameter can be quality, also can be parameters such as gravity, volume, that is to say that the parameter that can characterize weight of material gets final product.
S103, judge according to the weight parameter of material in the said title bucket whether material weighing closes to an end, and is, then execution in step S104; Otherwise execution in step S102;
Can detect current weight parameter through the target reference value of certain weight parameter is set in advance among the present invention, the size of more current weight parameter and target reference value judges whether material metage finishes; For example; With the weight parameter is that weight is example, at first according to batching prescription target setting gravimetric value, equals the target reference value when detecting the weight of material of claiming in the bucket; Or weight of material is in a certain scope of this target weight value the time, and controller judges that material metage closes to an end.
S104, calculating current time materials flow COEFFICIENT K are chosen current state suspension value according to said current time materials flow COEFFICIENT K then from said mapping table, this suspension value is claimed the offset of bucket material weight as calculating.
The suspension amount compensating control method of mixing plant material provided by the present invention can flow situation by real-time detecting material; And can from mapping table, choose the offset of suitable suspension value according to actual conditions as suspension this moment amount; With select for use fixing suspension amount to be worth by way of compensation in the prior art to compare; Suspension value excessively and operating mode that method provided by the present invention is obtained are mated in real time; Improve the material metage dynamic accuracy to a great extent, thereby improved the degree of accuracy of batching, helped improving the quality of product.
Correspondingly, on the basis of the suspension amount compensating control method of above-mentioned mixing plant material, the present invention also provides a kind of suspension amount compensation control system of mixing plant material, and this system comprises detecting element, controller; Detecting element, be used to detect current time claim to struggle against in the weight parameter of material; Controller; Be used to store in advance materials flow COEFFICIENT K and the mapping table of suspension value under certain batching prescription situation of setting up; And judge the material weighing state according to the weight parameter of material in the said title bucket; Current time materials flow COEFFICIENT K when the calculating material weighing closes to an end is chosen current state suspension value according to said current time materials flow COEFFICIENT K then from said mapping table, this suspension value is claimed the offset of bucket material weight as calculating.
The suspension amount compensation control system of this mixing plant material can carry out work according to the suspension amount compensating control method of above-mentioned mixing plant material, so this system also has the technique effect of above-mentioned compensating control method.
Please refer to Fig. 2, Fig. 2 is the process flow diagram of the suspension amount compensating control method of mixing plant among second kind of embodiment of the present invention.
Further, on the compensation method basis of the foregoing description, can also increase following steps, specifically see the description of following examples.
S201, set up and store the mapping table of materials flow COEFFICIENT K and suspension value under the different charge level height values in advance;
S2011, when accomplishing according to this predetermined material weighing in the meausring apparatus charge level of material choose the materials flow COEFFICIENT K of correspondence and the mapping table of suspension value to the height value of the discharging opening of aggregate bin;
Certainly; The breakdown action of opening the aggregate bin door can also be set behind the step S2011; The unlatching of the door of aggregate bin can be controlled through the batching topworks that compensation control system is measured in suspension; Batching topworks receives the steering order of the next unlatching door of controller transmission, and driving batching topworks opens door and carries out the discharging of material.
The weight parameter of material in S202, the detection current time meausring apparatus;
S203, judge according to the weight parameter of material in the said meausring apparatus whether material weighing closes to an end, if judged result is for being, execution in step S204 then; Otherwise execution in step S202;
S204, according to sense weight calculation of parameter current time materials flow COEFFICIENT K, from said mapping table, choose current state suspension value according to said current time materials flow COEFFICIENT K then, with this suspension value as offset that calculate to claim bucket material weight.
In above-mentioned each embodiment, when the judged result whether material weighing is closed to an end when being, in execution in step S104 and step S204, can also carry out simultaneously:
Step S205, close the door of aggregate bin.
That is to say that when judging that material weighing closes to an end, controller is calculating the materials flow values of factor K, when choosing the suspension value, send signal and close the door of aggregate bin for batching topworks (parts such as cylinder, dispenser).
Weight parameter among above-mentioned each embodiment can comprise current time claim to struggle against in the general assembly (TW) of material; The increment of material total weight weight of material in claiming to struggle against according to the general assembly (TW) of material in the current time meausring apparatus and previous moment; And this increment carried out Difference Calculation (differential calculation) and then obtain the materials flow COEFFICIENT K of current time; This account form is fairly simple, and accuracy is than higher.
A kind of preferred embodiment in, the suspension value in the mapping table can obtain through the statistical stacking averaging method, can further increase the accuracy of suspension value.
Certainly, the suspension value in the mapping table also can be provided with fixedly suspension value through practical experience.
Among above-mentioned each embodiment; Current time materials flow COEFFICIENT K is obtained through being arranged at the LOAD CELLS of claiming on bucket or the aggregate bin, and specifically in the installation site of claiming on bucket or the aggregate bin, operating personnel can decide according to actual conditions; Guarantee that the accuracy of measuring numerical value gets final product; LOAD CELLS not only range ability is wider, can satisfy the demand of Different Weight stage material weighing, and induction is relatively sensitiveer, quick.
More than the suspension amount compensation process and the system of a kind of mixing plant provided by the present invention carried out detailed introduction.Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. the suspension amount compensating control method of a mixing plant material, mixing plant is provided with the meausring apparatus of weighing material, it is characterized in that, and this method may further comprise the steps:
101) set up and store the mapping table of materials flow COEFFICIENT K and suspension value in advance;
102) weight parameter of material in the detection current time meausring apparatus;
103) judge according to the weight parameter of material in the said meausring apparatus whether material weighing closes to an end, and is, then execution in step 104); Not, then execution in step 102);
104) calculate current time materials flow COEFFICIENT K according to the current weight parameter that detects; From said mapping table, choose the suspension value of current time then according to said current time materials flow COEFFICIENT K, with the offset of this suspension value as weight of material in the calculating meausring apparatus.
2. the suspension amount compensation process of mixing plant material as claimed in claim 1; It is characterized in that; Step 101) in, sets up and stores the mapping table of materials flow COEFFICIENT K and suspension value under the different charge level height values in advance, wherein; The charge level height value is when accomplishing material weighing according to intended target, the height in the meausring apparatus between material charge level and the aggregate bin discharging opening;
And step 101) and step 102) between comprise the steps:
When 1011) accomplishing according to this predetermined material weighing in the meausring apparatus charge level of material choose the materials flow COEFFICIENT K of correspondence and the mapping table of suspension value to the height value of the discharging opening of aggregate bin.
3. the suspension amount compensation process of mixing plant material as claimed in claim 1 is characterized in that, in step 103, when judged result when being, also carry out following steps:
1031) close the door of aggregate bin.
4. like the suspension amount compensation process of each described mixing plant material of claim 1 to 3; It is characterized in that; Step 102) in, said weight parameter comprises the general assembly (TW) of the interior material of title bucket of the said meausring apparatus of current time, step 104) in; The increment of material total weight weight of material in claiming to struggle against according to the general assembly (TW) of material in the current time meausring apparatus and previous moment, and this increment carried out Difference Calculation and then obtain the materials flow COEFFICIENT K of current time.
5. like the suspension amount compensation process of each described mixing plant material of claim 1 to 3, it is characterized in that step 101) in, the suspension value in the said mapping table obtains through the statistical stacking averaging method; Also can obtain through experience.
6. like the suspension amount compensation process of each described mixing plant material of claim 1 to 3; It is characterized in that; Mixing plant is provided with aggregate bin, and title bucket or the LOAD CELLS said aggregate bin on of said current time materials flow COEFFICIENT K through being arranged at said meausring apparatus obtains.
7. the suspension amount compensation control system of a mixing plant material, mixing plant is provided with the meausring apparatus of weighing material, it is characterized in that, and this system comprises detecting element, controller;
Said detecting element is used to detect the weight parameter of material in the current time meausring apparatus;
Said controller; Be used to store the materials flow COEFFICIENT K of foundation in advance and the mapping table of suspension value; And judge the material weighing state according to the weight parameter of material in the said meausring apparatus, when material weighing closes to an end, calculate current time materials flow COEFFICIENT K; From said mapping table, choose the suspension value of current time then according to said current time materials flow COEFFICIENT K, this suspension value is claimed the offset of bucket material weight as calculating.
8. the suspension amount compensation control system of mixing plant material as claimed in claim 7 is characterized in that, said detecting element is the LOAD CELLS that is used to obtain weight of material in the said meausring apparatus.
9. the suspension amount compensation control system of mixing plant material as claimed in claim 8 is characterized in that said LOAD CELLS is arranged on the title bucket of said meausring apparatus.
10. the suspension amount compensation control system of mixing plant material as claimed in claim 7 is characterized in that, also comprises batching topworks, is used to receive the steering order of controller, and carries out the door that aggregate bin was opened or closed to above-mentioned steering order; Controller judges when material weighing closes to an end that the extremely said batching of the steering order topworks of aggregate bin door is closed in output.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101847904A CN102680066B (en) | 2012-05-11 | 2012-06-06 | Suspension amount compensating control method and system for materials at stirring station |
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| CN201210147070 | 2012-05-11 | ||
| CN201210147070.0 | 2012-05-11 | ||
| CN2012101847904A CN102680066B (en) | 2012-05-11 | 2012-06-06 | Suspension amount compensating control method and system for materials at stirring station |
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| CN102680066A true CN102680066A (en) | 2012-09-19 |
| CN102680066B CN102680066B (en) | 2013-12-04 |
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| CN 201220264926 Expired - Fee Related CN202836721U (en) | 2012-05-11 | 2012-06-06 | Material suspension amount compensation control system of mixing station and mixing station |
| CN2012101847904A Active CN102680066B (en) | 2012-05-11 | 2012-06-06 | Suspension amount compensating control method and system for materials at stirring station |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202836721U (en) * | 2012-05-11 | 2013-03-27 | 徐工集团工程机械股份有限公司科技分公司 | Material suspension amount compensation control system of mixing station and mixing station |
| CN112695589A (en) * | 2020-12-28 | 2021-04-23 | 无锡市万方电子有限公司 | Intelligent fuzzy network algorithm of asphalt mixing station weighing control system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU655905A1 (en) * | 1977-07-25 | 1979-04-05 | Ленинградский Комбинат Синтетических Моющих Средств Им. Карпова | Device for measuring and regulating loose material bulk density in flow |
| SU1425461A1 (en) * | 1987-01-28 | 1988-09-23 | Кременчугское Производственное Объединение "Дормашина" | Powder material weighing apparatus |
| DE4200240A1 (en) * | 1992-01-08 | 1993-07-15 | Leopold Jungbauer | Loose material filling assembly - has a container in a weighing housing with suction to draw in material and weighing in steps to control material volume |
| CN101113924A (en) * | 2006-12-31 | 2008-01-30 | 三一重工股份有限公司 | Fine material weighing measurement method and device thereof |
| CN102700000A (en) * | 2012-05-11 | 2012-10-03 | 徐工集团工程机械股份有限公司科技分公司 | Overshoot compensation control method and overshoot compensation control system for material in mixing plant |
| CN202836721U (en) * | 2012-05-11 | 2013-03-27 | 徐工集团工程机械股份有限公司科技分公司 | Material suspension amount compensation control system of mixing station and mixing station |
-
2012
- 2012-06-06 CN CN 201220264926 patent/CN202836721U/en not_active Expired - Fee Related
- 2012-06-06 CN CN2012101847904A patent/CN102680066B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU655905A1 (en) * | 1977-07-25 | 1979-04-05 | Ленинградский Комбинат Синтетических Моющих Средств Им. Карпова | Device for measuring and regulating loose material bulk density in flow |
| SU1425461A1 (en) * | 1987-01-28 | 1988-09-23 | Кременчугское Производственное Объединение "Дормашина" | Powder material weighing apparatus |
| DE4200240A1 (en) * | 1992-01-08 | 1993-07-15 | Leopold Jungbauer | Loose material filling assembly - has a container in a weighing housing with suction to draw in material and weighing in steps to control material volume |
| CN101113924A (en) * | 2006-12-31 | 2008-01-30 | 三一重工股份有限公司 | Fine material weighing measurement method and device thereof |
| CN102700000A (en) * | 2012-05-11 | 2012-10-03 | 徐工集团工程机械股份有限公司科技分公司 | Overshoot compensation control method and overshoot compensation control system for material in mixing plant |
| CN202836721U (en) * | 2012-05-11 | 2013-03-27 | 徐工集团工程机械股份有限公司科技分公司 | Material suspension amount compensation control system of mixing station and mixing station |
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| CN202836721U (en) | 2013-03-27 |
| CN102680066B (en) | 2013-12-04 |
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