CN101769780B - Weighing control device and method for three-accumulation electronic belt scale - Google Patents
Weighing control device and method for three-accumulation electronic belt scale Download PDFInfo
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- CN101769780B CN101769780B CN2010101073158A CN201010107315A CN101769780B CN 101769780 B CN101769780 B CN 101769780B CN 2010101073158 A CN2010101073158 A CN 2010101073158A CN 201010107315 A CN201010107315 A CN 201010107315A CN 101769780 B CN101769780 B CN 101769780B
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Abstract
The invention relates to a weighing control device and a weighing control method for a three-cumulant electronic belt scale. The weighing control device comprises weighing sensors on both sides of a conveyor, a weighing load receptor, a displacement sensor and an accumulator, wherein output signals of the weighing sensors on both sides of the conveyor are divided into left and right paths to enter the accumulator respectively; three groups of cumulants are formed through the accumulating combination of the weighing signals of the left and right paths and a displacement signal of the displacement sensor, namely a group of main cumulants and two groups of auxiliary cumulants; and numerical values of the two groups of auxiliary cumulants are subjected to real-time on-line contrast, and if the numerical values of the two groups of auxiliary cumulants are oversized, null point values acquired by the weighing sensors are compared with respective initial null point values when the conveyor has no materials, and a system takes the auxiliary cumulant with small error of the null point values as the main cumulants and display the value; therefore, even if one or one group of weighing sensors are failed, the other weighing sensor or the other group of weighing sensors can still operate, and the electronic belt scale can still output weighing values without halt. The weighing control device has the advantages of compact structure, high reliability and easy maintenance.
Description
Technical field
The present invention relates to a kind of Weighing control device and method thereof, especially a kind of Weighing control device and method thereof that is applicable to the belted electronic balance of the continuous convey materials on-line monitoring of belt conveyor.
Background technology
At present; The belted electronic balance that is used for the continuous convey materials weighing of belt conveyor; Be employed in two LOAD CELLSs are set on the carrier; With the weighing-up wave of two LOAD CELLSs output and be unified into one road weighing-up wave, accumulate computing with the rate signal of tachogenerator output then, and on integrating instrument, show the Weighing control device of operation result.The Weighing control device of the belted electronic balance of this version; Because the two-way weighing-up wave also is unified into one road weighing-up wave and accumulates computing with rate signal more later on; Like this when wherein having a sensor to break down; It is inaccurate that then whole belt conveyer scale will measure, and in operational process, be difficult for coming to light, therefore in the convey materials process can since metering forbidden cause damage.
Summary of the invention
Technical matters: the purpose of this invention is to provide a kind of three-cumulant electronic belt scale Weighing control device and method thereof; Through changing the array mode of cumulative amount; The operating mode of on-line monitoring LOAD CELLS; When control damaged when certain LOAD CELLS, belted electronic balance still can have the output of weighing value, thereby had improved the reliability of belt conveyer scale.
Technical scheme: three-cumulant electronic belt scale Weighing control device of the present invention; Full suspension type or the lever that comprises the supporting of conveyor left and right sides LOAD CELLS weigh carrier, displacement transducer and integrating instrument; Described conveyor left side LOAD CELLS is respectively the first from left LOAD CELLS, the second from left LOAD CELLS to left N LOAD CELLS; The right side LOAD CELLS is respectively a right LOAD CELLS, right two LOAD CELLSs to right N LOAD CELLS; Its signal output part branch left and right sides two-way connects by computing machine or electronic-weighing and shows the integrating instrument that control instrument constitutes; The road weighing-up wave that the first from left LOAD CELLS, the second from left LOAD CELLS produce to left N LOAD CELLS is respectively the first from left weighing-up wave, the second from left weighing-up wave to left N weighing-up wave, and the road weighing-up wave that a right LOAD CELLS, right two LOAD CELLSs produce to right N LOAD CELLS is respectively a right weighing-up wave, right two weighing-up waves to right N weighing-up wave; Left and right sides two-way weighing-up wave that processor software module through integrating instrument will receive and the accumulation of the displacement signal of displacement transducer are combined to form three groups of cumulative amounts; I.e. first group of main cumulative amount that the weighing-up wave that to be the first from left weighing-up wave, the second from left weighing-up wave merge to right N weighing-up wave two-way to left N weighing-up wave and a right weighing-up wave, right two weighing-up waves obtains; Second group is the auxilliary cumulative amount that the first from left weighing-up wave, the second from left weighing-up wave obtain to left N weighing-up wave one road weighing-up wave, and the 3rd group is the auxilliary cumulative amount that a right weighing-up wave, right two weighing-up waves obtain to right N weighing-up wave one road weighing-up wave.
The quantity of described left and right sides LOAD CELLS has one at least.
The Weighting and Controlling method of three-cumulant electronic belt scale of the present invention:
Measure and write down the values at zero point of main cumulative amount and two groups of auxilliary cumulative amounts after a, conveyor delivery material prior, the processor software module through integrating instrument are combined to form the first from left weighing-up wave, the second from left weighing-up wave to left N weighing-up wave and a right weighing-up wave, right two weighing-up waves to right N weighing-up wave two-way weighing-up wave three groups of cumulative amounts calibrations respectively;
After b, the conveyor delivery material, measure one group of master's cumulative amount and two groups of auxilliary cumulative amounts of material through integrating instrument;
C, real-time online comparison:
If two groups of auxilliary cumulative amounts than the time error in value in preestablishing scope, this moment, display showed main cumulative amount;
If two groups of auxilliary cumulative amounts comparison error in value exceed the scope of preestablishing, when treating on the conveyor no material, through integrating instrument respectively will this moment two groups of auxilliary cumulative amounts compare with two groups of values at zero point of assisting cumulative amounts that the conveyor delivery material prior writes down; Judge that being worth one group of bigger a road corresponding LOAD CELLS of auxilliary cumulative amount of error zero point has fault, integrating instrument is reported to the police to auxilliary cumulative amount of this group and fault LOAD CELLS, selects to be worth zero point one group of less auxilliary cumulative amount of error simultaneously and replaces main cumulative amount to show.
Beneficial effect: the present invention carries out three kinds of different combinations through the output signal to conveyor left and right sides LOAD CELLS and calculates; Obtain the numerical value of one group of master's cumulative amount and two groups of auxilliary cumulative amounts; Through integrating instrument processor software module two groups of auxilliary cumulative amount numerical value are carried out the real-time online comparison; And left and right sides LOAD CELLS obtains when conveyor is not had material zero point value with initial zeros value comparison separately; Judge that whether one of them or one group of LOAD CELLS have fault and warning, show the normal one group of cumulative amount numerical value of output in the LOAD CELLS of both sides simultaneously.Even thereby guarantee that some or one group of LOAD CELLS breaks down; The cumulative amount numerical value that opposite side is exported normal LOAD CELLS still can use as the weighing value of belted electronic balance; Need not to shut down; Check weighing is reliable, thereby has avoided causing whole belted electronic balance not have weighing to be worth spendable loss owing to a certain LOAD CELLS breaks down.Solved in transportation work because sensor takes place unusually, caused metering inaccurate, be not easy again to find to measure an inaccurate difficult problem simultaneously, improved the reliability of belt conveyer scale.Be applicable to the online and reliable weighting measurement of materials of the continuous convey materials of belt conveyor.Its compact conformation is reasonable, and reliability is high, easy care, and long service life has practicality widely.
Description of drawings
Fig. 1 is a theory structure synoptic diagram of the present invention;
Fig. 2 is that the present invention is to the floated carrier Weighing control device structural representation of weighing of single mount roller;
Fig. 3 is a signal fusing program flow diagram of the present invention;
Fig. 4 is the present invention to many carrying rollers lever carrier Weighing control device structural representation of weighing.
Fig. 5 is that the present invention is to the floated carrier Weighing control device structural representation of singly weighing of many carrying rollers;
Fig. 6 is that the present invention is to the floated carrier Weighing control device structural representation of weighing of many groups single mount roller;
Among the figure: the 1-LOAD CELLS, the 2-signal converter, 3-assists integrator, 4-integrating instrument, 5-displacement transducer, the 6-carrier of weighing.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are done further to describe:
Embodiment one, to the floated carrier weighing of weighing of single mount roller; Shown in Figure 2; Three-cumulant electronic belt scale Weighing control device of the present invention is mainly by two LOAD CELLSs 1, be made up of the carrier 6 of weighing of two LOAD CELLSs, 1 supporting, displacement transducer 5 and integrating instrument 4.Two LOAD CELLSs 1 are respectively left road LOAD CELLS La and right wing LOAD CELLS Ra; When two LOAD CELLSs 1 adopt analog signal sensors; The output terminal of left side road LOAD CELLS La and right wing LOAD CELLS Ra divides two-way to be connected by computing machine or electronic-weighing through signal converter 2 and shows the integrating instrument 4 that control instrument constitutes, and is as shown in Figure 1; When if two LOAD CELLSs 1 adopt the sensor of digital signal, but undesired signal converter 2.Integrating instrument 4 mainly comprises processor, reshaper, storer, display and power supply; Wherein signal converter 2 is 24 analog to digital conversion circuit AD7710; Processor is 32 bit CPU integrated circuit S3C44B0X, and storer is integrated circuit 39VF160, and the displacement signal reshaper is an integrated circuit 393; Display is 640 * 320 dot matrix, and power supply is the 220V alternating current.The weighing-up wave that left side road LOAD CELLS La and right wing LOAD CELLS Ra produce is respectively left road weighing-up wave La1, right wing weighing-up wave Ra1; Processor software module through integrating instrument 4 is combined to form three groups of cumulative amounts with the displacement signal accumulation of left road weighing-up wave La1, right wing weighing-up wave Ra1 and displacement transducer 5; I.e. first group of main cumulative amount that the weighing-up wave that is left road weighing-up wave La1 and right wing weighing-up wave Ra1 merge obtains; Second group is the auxilliary cumulative amount that left road weighing-up wave La1 obtains, and the 3rd group is the auxilliary cumulative amount that right wing weighing-up wave Ra1 obtains.
Three-cumulant electronic belt scale Weighting and Controlling method of the present invention: for two carriers 6 of weighing of full suspension type; Two LOAD CELLSs 1 that are provided with on it are divided into left LOAD CELLS La and right LOAD CELLS Ra; And a displacement transducer 5 is set on belted electronic balance; Connection shows the integrating instrument 4 that control instrument constitutes by computing machine or electronic-weighing, the displacement signal of left road weighing-up wave La1, right wing weighing-up wave Ra1 and displacement transducer 5 is accumulated being combined to form three groups of cumulative amounts through the processor software module of integrating instrument 4.In the conveyor delivery material prior, measure the values at zero point of main cumulative amount and two groups of auxilliary cumulative amounts after three groups of cumulative amounts calibrations that the processor software module through integrating instrument 4 is combined to form left road weighing-up wave La1 and right wing weighing-up wave Ra1 respectively; After conveyor begins convey materials, measure the one group of master's cumulative amount of material and the value of two groups of auxilliary cumulative amounts through integrating instrument 4; In material conveying process, control is compared, judged to the auxilliary cumulative amount in two auxilliary integrators 3 in real time through the software module in integrating instrument 4 processors.Under the normal operation; Two groups of auxilliary cumulative amount comparison error in value are in preestablishing scope; Be predefined permissible error value range, for example 1%～5%, this moment, display showed the value of main cumulative amount; Be the main cumulative amount that weighing-up wave that left road weighing-up wave La1 and right wing weighing-up wave Ra1 merge obtains, be the operate as normal value.Under the non-normal working situation; Two groups of auxilliary cumulative amount comparison error in value exceed the scope of preestablishing; Be that LOAD CELLS breaks down; This moment, integrating instrument 4 compared the zero point values of two groups of auxilliary cumulative amounts with two groups of auxilliary cumulative amounts of conveyor delivery material prior respectively, and promptly two auxilliary integrators 3 of the software module in the processor carry out two auxilliary cumulative amounts of integrating processing formation belted electronic balance to the displacement signal of left road weighing-up wave La1 and right wing weighing-up wave Ra1 and displacement transducer 5 respectively and two groups of values at zero point of assisting cumulative amounts of conveyor delivery material prior compare; Judge that being worth one group of bigger corresponding LOAD CELLS of auxilliary cumulative amount of error zero point has fault; 4 pairs of integrating instruments should group be assisted cumulative amount and the warning of fault LOAD CELLS; Selecting to be worth zero point one group of less auxilliary cumulative amount of error simultaneously replaces main cumulative amount to show; Even belted electronic balance still can have the output of weighing value thereby a certain LOAD CELLS 1 of assurance breaks down, improved the reliability of belt conveyer scale greatly.
In like manner; For the lever-type carrier 6 of weighing of many carrying rollers, floated carrier 6 and the floated carrier 6 of weighing of many group single mount rollers of singly weighing of many carrying rollers; Belted electronic balance is not being done under the situation that any structure changes, and the function that only changes LOAD CELLS 1 and the pin joint of the carrier 6 of weighing just can obtain three kinds of corresponding combination forms.First kind of pattern weighed the pin joint of both sides LOAD CELLS 1 and the carrier 6 of weighing in the carrier 6 all as force-detecting position, and this moment, the belted electronic balance combined transformation formed master carrier 6 of weighing; Second kind of pattern weigh the first from left LOAD CELLS La in the carrier 6, the second from left LOAD CELLS Lb to the pin joint of left N LOAD CELLS Ln and the carrier 6 of weighing only as fulcrum; And this moment a right LOAD CELLS Ra, right two LOAD CELLS Rb to the pin joint of the right N LOAD CELLS Rn and the carrier 6 of weighing still as force-detecting position; This moment the belted electronic balance combined transformation form one with the first from left LOAD CELLS La, the second from left LOAD CELLS Lb to the pin joint of left N LOAD CELLS Ln and the carrier 6 of weighing as fulcrum, assist weigh carrier 6 to the pin joint of the right N LOAD CELLS Rn and the carrier 6 of weighing as the lever of force-detecting position with a right LOAD CELLS Ra, right two LOAD CELLS Rb; The third pattern weigh the first from left LOAD CELLS La in the carrier 6, the second from left LOAD CELLS Lb to the pin joint of left N LOAD CELLS Ln and the carrier 6 of weighing as force-detecting position; And this moment a right LOAD CELLS Ra, right two LOAD CELLS Rb to the pin joint of the right N LOAD CELLS Rn and the carrier 6 of weighing as fulcrum; This moment the belted electronic balance combined transformation form one with the first from left LOAD CELLS La, the second from left LOAD CELLS Lb to the pin joint of left N LOAD CELLS Ln and the carrier 6 of weighing as force-detecting position, assist weigh carrier 6 to the pin joint of the right N LOAD CELLS Rn and the carrier 6 of weighing as the lever of fulcrum with a right LOAD CELLS Ra, right two LOAD CELLS Rb.In the system failure, needing only has one normally in two auxilliary integrators 3; Still can continue to keep the operate as normal of belted electronic balance system; The belted electronic balance combined transformation of this moment forms the auxilliary carrier 6 of weighing of lever; Thereby guaranteeing that even a certain LOAD CELLS 1 breaks down, belted electronic balance still can have the output of weighing value.
Shown in Figure 3 is the signal fusing program circuit:
A. whether two groups of auxilliary cumulative amount comparison error in value are preestablishing scope;
B. be to show that the first from left weighing-up wave La1, the second from left weighing-up wave Lb1 merge the main cumulative amount that obtains to left N weighing-up wave Ln1 and a right weighing-up wave Ra1, right two weighing-up wave Rb1 to right N weighing-up wave Rn1;
C. deny, when processor does not have material to conveyor by the first from left weighing-up wave La1, the second from left weighing-up wave Lb1 to left N weighing-up wave Ln1 and a right weighing-up wave Ra1, right two weighing-up wave Rb1 to right N weighing-up wave Rn1 obtains respectively zero point value compare with initial zeros value separately;
D. judge that being worth that bigger road LOAD CELLS 1 of error zero point is the fault LOAD CELLS, and report to the police.
E. will be worth auxilliary cumulative amount that less left road weighing-up wave of error or right wing weighing-up wave obtain zero point sends in the display and shows.
Embodiment two, to the carrier weighing of weighing of many carrying rollers lever; Shown in Figure 4; About carrier 6 one ends of weighing are located on two strong points; Left side LOAD CELLS La and right side LOAD CELLS Ra are located at the opposite side of the carrier 6 of weighing, the formation lever-type structure, and the full suspension type structure that directly is bearing in carrier 6 two ends of weighing with left side LOAD CELLS La among the embodiment one and right side LOAD CELLS Ra is different.All the other are identical with embodiment one, and identical part slightly.
Embodiment three, to the floated carrier weighing of singly weighing of many carrying rollers; Shown in Figure 5; The carrier 6 of weighing is located on two left side LOAD CELLS the first from left LOAD CELLS La, the second from left LOAD CELLS Lb and two right sides LOAD CELLS right side one LOAD CELLS Ra, the right two LOAD CELLS Rb; The carrier 6 of weighing is provided with many carrying rollers; Constitute the floated carrier formula structure of singly weighing of many carrying rollers, with establish on the carrier 6 of singly weighing among the embodiment one independent one group of carrying roller and carrier 6 by about the full suspension type structure that supports of two LOAD CELLSs different.All the other are identical with embodiment one, and identical part slightly.
Embodiment four, to the floated carrier weighing of weighing of many groups single mount roller; Shown in Figure 6; Many groups of carriers 6 of singly weighing be located at respectively separately left side LOAD CELLS the first from left LOAD CELLS La, the second from left LOAD CELLS Lb to left N LOAD CELLS Ln and the right LOAD CELLS Ra of right side LOAD CELLS, right two LOAD CELLS Rb to right N LOAD CELLS Rn; Be equipped with the single mount roller on the every group of carrier 6 of singly weighing; Constitute the floated carrier formula structures of weighing of many group single mount rollers, different with the full suspension type structure of the floated carrier 6 of weighing of independent one group of single mount roller among the embodiment one.All the other are identical with embodiment one, and identical part slightly.
Claims (3)
1. the Weighing control device of a three-cumulant electronic belt scale; Full suspension type or the lever that comprises conveyor left and right sides LOAD CELLS (1) supporting weigh carrier (6), displacement transducer (5) and integrating instrument (4); It is characterized in that: described conveyor left side LOAD CELLS is respectively the first from left LOAD CELLS (La), the second from left LOAD CELLS (Lb) to left N LOAD CELLS (Ln); The right side LOAD CELLS is respectively a right LOAD CELLS (Ra), right two LOAD CELLSs (Rb) to right N LOAD CELLS (Rn); Its signal output part branch left and right sides two-way connects by computing machine or electronic-weighing and shows the integrating instrument (4) that control instrument constitutes; The road weighing-up wave that the first from left LOAD CELLS (La), the second from left LOAD CELLS (Lb) produce to left N LOAD CELLS (Ln) is respectively the first from left weighing-up wave (La1), the second from left weighing-up wave (Lb1) to left N weighing-up wave (Ln1), and the road weighing-up wave that a right LOAD CELLS (Ra), right two LOAD CELLSs (Rb) produce to right N LOAD CELLS (Rn) is respectively a right weighing-up wave (Ra1), right two weighing-up waves (Rb1) to right N weighing-up wave (Rn1); Left and right sides two-way weighing-up wave that processor software module through integrating instrument (4) will receive and the accumulation of the displacement signal of displacement transducer (5) are combined to form three groups of cumulative amounts; I.e. first group of main cumulative amount that the weighing-up wave that to be the first from left weighing-up wave (La1), the second from left weighing-up wave (Lb1) merge to right N weighing-up wave (Rn1) two-way to left N weighing-up wave (Ln1) and a right weighing-up wave (Ra1), right two weighing-up waves (Rb1) obtains; Second group is the auxilliary cumulative amount that the first from left weighing-up wave (La1), the second from left weighing-up wave (Lb1) obtain to left N weighing-up wave (Ln1) one road weighing-up wave; The 3rd group is the auxilliary cumulative amount that a right weighing-up wave (Ra1), right two weighing-up waves (Rb1) obtain to right N weighing-up wave (Rn1) one road weighing-up wave; In material conveying process; Compare, judge control in real time through (4) two groups of auxilliary cumulative amounts of integrating instrument; In preestablishing scope, then display shows the value of main cumulative amount like two groups of auxilliary cumulative amount comparison error in value; Exceed the scope of preestablishing like two groups of auxilliary cumulative amount comparison error in value; Integrating instrument (4) compares two groups of values at zero point of assisting cumulative amounts of two groups of auxilliary cumulative amounts and conveyor delivery material prior respectively; Judge that being worth one group of bigger corresponding LOAD CELLS of auxilliary cumulative amount of error zero point has fault, selects to be worth zero point one group of less auxilliary cumulative amount of error simultaneously and replaces main cumulative amount to show.
2. the Weighing control device of three-cumulant electronic belt scale according to claim 1, its characteristic also is: the quantity of described left and right sides LOAD CELLS (1) has one at least.
3. Weighting and Controlling method of three-cumulant electronic belt scale of device according to claim 1 is characterized in that:
Measure and write down the values at zero point of main cumulative amount and two groups of auxilliary cumulative amounts after a, conveyor delivery material prior, the processor software module through integrating instrument (4) are combined to form the first from left weighing-up wave (La1), the second from left weighing-up wave (Lb1) to left N weighing-up wave (Ln1) and a right weighing-up wave (Ra1), right two weighing-up waves (Rb1) to right N weighing-up wave (Rn1) two-way weighing-up wave three groups of cumulative amounts calibrations respectively;
After b, the conveyor delivery material, measure one group of master's cumulative amount and two groups of auxilliary cumulative amounts of material through integrating instrument (4);
C, real-time online comparison:
If two groups of auxilliary cumulative amount comparison error in value are in preestablishing scope, this moment, display showed main cumulative amount;
If two groups of auxilliary cumulative amount comparison error in value exceed the scope of preestablishing, respectively two groups of values at zero point of assisting two groups of auxilliary cumulative amounts of cumulative amounts and conveyor delivery material prior record are compared through integrating instrument (4); Judge that being worth one group of bigger a road corresponding LOAD CELLS of auxilliary cumulative amount of error zero point has fault, integrating instrument (4) is reported to the police to auxilliary cumulative amount of this group and fault LOAD CELLS, selects to be worth zero point one group of less auxilliary cumulative amount of error simultaneously and replaces main cumulative amount to show.
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| CN2010101073158A CN101769780B (en) | 2010-02-08 | 2010-02-08 | Weighing control device and method for three-accumulation electronic belt scale |
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| CN2010101073158A CN101769780B (en) | 2010-02-08 | 2010-02-08 | Weighing control device and method for three-accumulation electronic belt scale |
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| CN101788328A (en) * | 2010-03-03 | 2010-07-28 | 江苏赛摩集团有限公司 | Weighing control device of platform weighing scale and method thereof |
| DE102011055932A1 (en) * | 2011-12-01 | 2013-06-06 | Vorwerk & Co. Interholding Gmbh | Method for generating a display reading |
| CN114111976A (en) * | 2021-11-29 | 2022-03-01 | 徐州圣能科技有限公司 | Intelligent electronic belt scale with auxiliary material adding function |
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