CN102359813A - Calibrating method of weighing sensor of belt scale - Google Patents
Calibrating method of weighing sensor of belt scale Download PDFInfo
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- CN102359813A CN102359813A CN2011102421567A CN201110242156A CN102359813A CN 102359813 A CN102359813 A CN 102359813A CN 2011102421567 A CN2011102421567 A CN 2011102421567A CN 201110242156 A CN201110242156 A CN 201110242156A CN 102359813 A CN102359813 A CN 102359813A
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Abstract
The invention discloses a calibrating method of a weighing sensor of a belt scale, belonging to the technical field of dynamic weighing. The calibrating method is characterized by comprising the following steps of: obtaining a comparative standard value range by collecting actual weighing values, obtaining a real-time zero value by using logarithm values of different combinations of accumulative amounts to be compared with the standard value, automatically tracking and judging an error tendency of the accumulative amounts of the weighing sensor, further diagnosing the position and system where the error is; and calibrating the weighing sensor according to the error curve. The calibrating method has the advantages: structurally, a mature general technology is adopted, the calibrating method can be used for timely, accurately and reliably judging errors, is not only convenient to check and but also has the function of fault prevention so that traditional breakdown maintenance turns into beforehand maintenance, thereby substantially reducing the failure rate.
Description
Technical field
The present invention relates to a kind of Dynamic Weighting technology, particularly a kind of method of belt balance weighing pick up calibration.
Background technology
Belted electronic balance is widely used as the weighing equipment of belt conveyor convey materials at present; And in the actual application, the factor that influences weighing precision is a lot, and the inaccurate phenomenon of metering often takes place; When causing economic loss, directly influence product quality especially as batching metering.Owing to cause the factor of weighing precision error to receive sensor performance, belt tension variation, load carrier and environmental impact; And LOAD CELLS is most important weighing parts; Therefore at belt conveyer scale installation and operation week after date; Must calibrate the cumulative amount of LOAD CELLS, present calibration steps mainly relies on commissioning staff's experience and skill level, the debugging total accumulation; Especially for a plurality of LOAD CELLS system, the low uneven situation of LOAD CELLS cumulative amount that also causes easily of efficient not only.In service in weighing, because the real-time status that lacks LOAD CELLS detects, take the method for periodic check usually, when causing maintenance superfluous, can't carry out preventive maintenance, can only take passive correction maintenance.Developing a kind of can the detection in real time the LOAD CELLS cumulative amount, improve debugging efficiency, have the error following function, realize the technology of trouble-saving, is the technical matters that those skilled in the art are badly in need of solving.
Summary of the invention
Technical matters to be solved by this invention; Provide a kind of belt balance weighing sensor calibrating method; Solve present belt conveyer scale owing to can't detect in real time, cause the problem that debugging efficiency is low, maintenance big and carry out trouble-saving LOAD CELLS cumulative amount error.
Technical matters to be solved by this invention is that a kind of belt balance weighing sensor calibrating method will be provided, and it is characterized in that the belt balance weighing sensor calibrating method comprises:
The cumulative amount and the total accumulation of the single LOAD CELLS of the different operating modes when 1, calculating the Weighing system serviceable condition by integrating instrument; Calculate the cumulative amount of single LOAD CELLS and total accumulation merchant's logarithm value respectively; In the section, obtaining one group is the logarithmic curve of basic point with the zero point, gets the maximal value and the minimum value of curve and revises at the fixed time; The revised standard regions that with the zero point is the interval of basic point as comparison usefulness; And write down the standard regions and the total accumulation of various operating modes, wherein: the total accumulation the when cumulative amount when cumulative amount comprises zero load, chain code and weighing state, total accumulation comprise zero load, chain code or link code state.
Preferably, logarithm value is calculated the related algorithm that establishes an equation at least as follows:
D＝Lg(N*t/T)
Wherein:
D=moment logarithm value;
The single LOAD CELLS of t=moment cumulative amount;
T=moment total accumulation;
N=LOAD CELLS quantity;
The Lg=natural logarithm.
Preferably, predetermined amount of time is based on belt and moves a week at least, the needed time.
Preferably, standard regions is based on and adopts different modification methods, the calibration areas of acquisition, error district and faulty section.
Preferably, modification method comprises automatic correction or manual correction, and the interval value of calibration areas, error district, faulty section is increased successively.
Preferably, the modification method of calibration areas is at least like the related algorithm of equation:
Z1＝(1Dmax1+1Dmin1)/2
Z1＜Z2＜Z1+a
Z2＜Z3＜Z2+b
Wherein:
The absolute value that be worth the maximum zero point of 1Dmax1=weighing sensor cumulative amount;
The absolute value that be worth the minimum zero point of 1Dmin1=weighing sensor cumulative amount;
The correction factor in a=error district;
The correction factor of b=faulty section;
The Z1=calibration areas is based on the zero point interval of the positive negative value composition that is basic point;
Z2=error district is based on the revised outer positive and negative interval of calibration areas that is positioned at of calibration areas;
The Z3=faulty section is based on the revised positive and negative interval that is positioned at outside the error district, error district.
2, calculate the corresponding states total accumulation merchant logarithm value of each LOAD CELLS cumulative amount and record, obtain value at real-time zero point, through real-time zero point value compare with corresponding standard regions; Calibration debugging mode LOAD CELLS cumulative amount in like manner, calculates each LOAD CELLS cumulative amount and weighing state total accumulation merchant logarithm value during operation; Obtain value at real-time zero point; Through real-time zero point value compare with corresponding standard regions, correcting travel state LOAD CELLS cumulative amount, wherein:
The debugging calibration comprises unloaded calibration and chain code or link code load calibration, and step comprises:
After step 1, completion are installed; Under light condition; Calculate one by one each LOAD CELLS cumulative amount real-time zero point value with corresponding calibration areas comparison, the value at real-time zero point that obtains each LOAD CELLS cumulative amount automatically exceeds the error amount of calibration areas, and sorts by size;
Step 2, when defective, the adjustment weighing mechanism is carried out above-mentioned steps again as claiming frame, LOAD CELLS, belt etc., until value all in the standard regions in correspondence at each at real-time zero point;
Step 3, repeat above step after applying link code or chain code, after meeting the demands, calculate total accumulation value at real-time zero point and compare qualified calibration completion, defective repetition above-mentioned steps with corresponding standard regions.
The operation calibration is based on the calibration in the weighing process; Be worth and the comparison of corresponding standard regions the real-time zero point through each LOAD CELLS cumulative amount of real-time monitoring; Write down simultaneously and be worth curve real-time zero point; When value got into faulty section or in the error district, thought the needs calibration real-time zero point, undertaken by following method for optimizing:
● when unloaded, extract and be worth operation curve all real-time zero points, analyzing failure cause is undertaken by the debugging calibration steps;
● adjust less LOAD CELLS and the mechanism of real-time value at zero point;
● isolate less load cell signal or the cumulative amount of real-time value at zero point automatically, recomputate total accumulation,, transfer to analyze and be worth operation curve real-time zero point, carry out the debugging calibration steps like the defective feed that then stops still.
Beneficial effect: through each LOAD CELLS cumulative amount is set up different standard regions; Convert the cumulative amount that constantly changes to quantitative values; Realized the quantitative values comparison, solved the prior art cumulative amount and all be variable and the technical barrier that can't detect, thereby improved debugging efficiency and precision; Satisfied the fault trend monitoring; Changed the fault after-sales service into trouble-saving,, solved the technical matters that those skilled in the art are badly in need of solving for the development of new control instrument provides new thinking and direction.
Advantage:
1, carry out single LOAD CELLS cumulative amount and judge that accurately screening out is that which LOAD CELLS and place system exist error, calibration has more purpose, has overcome the dependence problem to commissioning staff's experience, makes verification more accurate, convenient.
2, change correction maintenance into maintenance in advance, reduce failure rate, also help the robotization of equipment control.
3, combine with the trend judgement, judging fault type is prevision fault or catastrophic failure, reduces servicing time, increases work efficiency, and be easy to realize the isolated fault source, recomputates cumulative amount, keeps weighing and carries out continuously.
Description of drawings
Fig. 1: standard regions synoptic diagram of the present invention.
Fig. 2: the process flow diagram that standard regions of the present invention is drawn.
Fig. 3: the present invention debugs the calibration process flow diagram.
Fig. 4: the present invention moves the calibration process flow diagram.
The practical implementation method
This implementation method is for a better understanding of the present invention, is not used in restriction condition of the present invention.
The belt balance weighing sensor calibrating method comprises:
The cumulative amount and the total accumulation of the single LOAD CELLS of the different operating modes when 1, calculating the Weighing system serviceable condition by integrating instrument; Calculate the cumulative amount of single LOAD CELLS and total accumulation merchant's logarithm value respectively; In the section, obtaining one group is the logarithmic curve of basic point with the zero point, gets the maximal value and the minimum value of curve and revises at the fixed time; The revised standard regions that with the zero point is the interval of basic point as comparison usefulness; And write down the standard regions and the total accumulation of various operating modes, wherein: the total accumulation the when cumulative amount when cumulative amount comprises zero load, chain code and weighing state, total accumulation comprise zero load, chain code or link code state.
Logarithm value is calculated the related algorithm that establishes an equation at least as follows:
D＝Lg(N*t/T)
Wherein:
D=moment logarithm value;
The single LOAD CELLS of t=moment cumulative amount;
T=moment total accumulation;
N=LOAD CELLS quantity is the integer greater than zero;
The Lg=natural logarithm.
Predetermined amount of time is based on belt and moves a week at least, the needed time.
Standard regions is based on and adopts different modification methods, the calibration areas of acquisition, error district and faulty section.
Modification method comprises automatic correction or manual correction, and the interval value of calibration areas, error district, faulty section is increased like Fig. 1, Fig. 2 successively.
The modification method of calibration areas is at least like the related algorithm of equation:
Z1＝(1Dmax1+1Dmin1)/2
Z1＜Z2＜Z1+a
Z2＜Z3＜Z2+b
Wherein:
The absolute value that be worth the maximum zero point of 1Dmax1=weighing sensor cumulative amount;
The absolute value that be worth the minimum zero point of 1Dmin1=weighing sensor cumulative amount;
The correction factor in a=error district;
The correction factor of b=faulty section;
The Z1=calibration areas is based on the zero point interval of the positive negative value composition that is basic point;
Z2=error district is based on the revised outer positive and negative interval of calibration areas that is positioned at of calibration areas;
The Z3=faulty section is based on the revised positive and negative interval that is positioned at outside the error district, error district.
2, calculate the corresponding states total accumulation merchant logarithm value of each LOAD CELLS cumulative amount and record, obtain value at real-time zero point, through real-time zero point value compare with corresponding standard regions; Calibration debugging mode LOAD CELLS cumulative amount in like manner, calculates each LOAD CELLS cumulative amount and weighing state total accumulation merchant logarithm value during operation; Obtain value at real-time zero point; Through real-time zero point value compare with corresponding standard regions, correcting travel state LOAD CELLS cumulative amount, wherein:
The debugging calibration comprises unloaded calibration and chain code or link code load calibration, and step comprises:
After step 1, completion are installed; Under light condition; The value at real-time zero point of calculating each LOAD CELLS cumulative amount one by one is unloaded calibration areas comparison with corresponding calibration areas, and the value at real-time zero point of calculating each LOAD CELLS cumulative amount exceeds the error amount of calibration areas, and sorts by size;
Step 2, when defective, the adjustment weighing mechanism is carried out above-mentioned steps again as claiming frame, LOAD CELLS, belt etc., until value all in the standard regions in correspondence at each at real-time zero point;
Step 3, repeat above step after applying link code or chain code, after meeting the demands, calculate total accumulation value at real-time zero point and compare qualified calibration completion, defective repetition above-mentioned steps with corresponding standard regions.
The operation calibration is based on the calibration in the weighing process; Be worth and the comparison of corresponding standard regions the real-time zero point through each LOAD CELLS cumulative amount of real-time monitoring; Write down simultaneously and be worth curve real-time zero point; When value got into faulty section or in the error district, thought the needs calibration real-time zero point, undertaken by following method:
● when unloaded, extract and be worth operation curve all real-time zero points, analyzing failure cause is undertaken by the debugging calibration steps;
● adjust less LOAD CELLS and the mechanism of real-time value at zero point;
● isolate less load cell signal or the cumulative amount of real-time value at zero point automatically, recomputate total accumulation,, transfer to analyze and be worth operation curve real-time zero point, carry out the debugging calibration steps like the defective feed that then stops still.
LOAD CELLS cumulative amount when described correspondence is meant zero load is corresponding to unloaded total accumulation, and the LOAD CELLS cumulative amount during link code is corresponding to the link code total accumulation, and the LOAD CELLS cumulative amount during weighing is corresponding to actual weighing cumulative amount; Corresponding standard regions is meant zero load, link code, weighing state, is used to debug, error is followed the tracks of, the standard regions of fault judgement.
Claims (7)
1. belt balance weighing sensor calibrating method is characterized in that calibration steps comprises:
The cumulative amount and the total accumulation of the single LOAD CELLS of a, the different operating modes when calculating the Weighing system serviceable condition by integrating instrument; Calculate the cumulative amount of single LOAD CELLS and total accumulation merchant's logarithm value respectively; In the section, obtaining one group is the logarithmic curve of basic point with the zero point, gets the maximal value and the minimum value of curve and revises at the fixed time; The revised standard regions that with the zero point is the interval of basic point as comparison usefulness, and write down the standard regions and the total accumulation of various operating modes;
B, calculate the corresponding states total accumulation merchant logarithm value of each LOAD CELLS cumulative amount and record, obtain value at real-time zero point, through real-time zero point value compare with corresponding standard regions; Calibration debugging mode LOAD CELLS cumulative amount; In like manner, calculate each LOAD CELLS cumulative amount and weighing state total accumulation merchant logarithm value during operation, obtain value at real-time zero point; Through being worth real-time zero point and the comparison of corresponding standard regions, correcting travel state LOAD CELLS cumulative amount.
2. the method for claim 1 is characterized in that, logarithm value is at least like the related algorithm of equation:
D＝Lg(N*t/T)
Wherein:
D=moment logarithm value;
The single LOAD CELLS of t=moment cumulative amount;
T=moment total accumulation;
N=LOAD CELLS quantity;
The Lg=natural logarithm.
3. the method for claim 1 is characterized in that, predetermined amount of time is based on belt and moves a week at least, the needed time.
4. the method for claim 1 is characterized in that, standard regions is based on the modification method that adopts automatic or manual, the calibration areas of acquisition, error district and faulty section, and interval value increases successively.
5. method as claimed in claim 4 is characterized in that, the modification method of standard regions is at least like the related algorithm of equation:
Z1＝(1Dmax1+1Dmin1)/2
Z1＜Z2＜Z1+a
Z2＜Z3＜Z2+b
Wherein:
The absolute value that be worth the maximum zero point of 1Dmax1=weighing sensor cumulative amount;
The absolute value that be worth the minimum zero point of 1Dmin1=weighing sensor cumulative amount;
The correction factor in a=error district;
The correction factor of b=faulty section;
The Z1=calibration areas is based on the zero point interval of the positive negative value composition that is basic point;
Z2=error district is based on the revised outer positive and negative interval of calibration areas that is positioned at of calibration areas;
The Z3=faulty section is based on the revised positive and negative interval that is positioned at outside the error district, error district.
6. the method for claim 1 is characterized in that, the debugging calibration comprises unloaded and chain code or link code load calibration, and step comprises:
After step 1, completion are installed; Under light condition; Calculate one by one each LOAD CELLS cumulative amount real-time zero point value with corresponding calibration areas comparison, the value at real-time zero point that obtains each LOAD CELLS cumulative amount automatically exceeds the error amount of calibration areas, and sorts by size;
Step 2, when defective, the adjustment weighing mechanism is carried out above-mentioned steps again as claiming frame, LOAD CELLS, belt etc., until value all in the standard regions in correspondence at each at real-time zero point;
Step 3, repeat above step after applying link code or chain code, after meeting the demands, calculate total accumulation value at real-time zero point and compare qualified calibration completion, defective repetition above-mentioned steps with corresponding standard regions.
7. the method for claim 1; It is characterized in that; Operation calibration is based on the calibration in the weighing process, compares with corresponding standard regions through the value at real-time zero point of each LOAD CELLS cumulative amount of real-time monitoring, writes down simultaneously to be worth curve real-time zero point; When value got into faulty section or in the error district, thought the needs calibration real-time zero point, undertaken by following method:
● when unloaded, extract and be worth operation curve all real-time zero points, analyzing failure cause is undertaken by the debugging calibration steps;
● adjust less LOAD CELLS and the mechanism of real-time value at zero point;
● isolate less load cell signal or the cumulative amount of real-time value at zero point automatically, recomputate total accumulation,, transfer to analyze and be worth operation curve real-time zero point, carry out the debugging calibration steps like the defective feed that then stops still.
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| CN102818620A (en) * | 2012-09-14 | 2012-12-12 | 莱芜钢铁集团有限公司 | Checking method of subsidiary electronic belt scale |
| WO2014131318A1 (en) * | 2013-02-26 | 2014-09-04 | 梅特勒-托利多(常州)精密仪器有限公司 | Intelligent analogue weighing sensor and self-diagnosing method thereof |
| CN109060101A (en) * | 2018-09-17 | 2018-12-21 | 广州市贺氏办公设备有限公司 | A kind of electronic scale environment self-adaption method of adjustment and system |
| CN109145398A (en) * | 2018-07-30 | 2019-01-04 | 白杨 | A kind of item quantity calculation method based on weighing |
| CN111829639A (en) * | 2019-04-15 | 2020-10-27 | 北京万集科技股份有限公司 | Calibration method of combined truck scale |
| CN113483876A (en) * | 2021-07-01 | 2021-10-08 | 南方电网电力科技股份有限公司 | Automatic control method for calibration of belt scale of coal feeder and related device |
| CN113504005A (en) * | 2021-07-13 | 2021-10-15 | 武汉飞恩微电子有限公司 | Calibration method, device and equipment of pressure sensor and storage medium |
| CN114910153A (en) * | 2022-06-14 | 2022-08-16 | 上海佑久健康科技有限公司 | Method, device, server, system and computer-readable storage medium for online detection of weight deviation |
| CN114923549A (en) * | 2022-06-06 | 2022-08-19 | 浙江中烟工业有限责任公司 | Method for adjusting conveyer belt of belt scale |
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Cited By (13)
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| CN102818620B (en) * | 2012-09-14 | 2015-04-15 | 莱芜钢铁集团有限公司 | Checking method of subsidiary electronic belt scale |
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| CN109145398A (en) * | 2018-07-30 | 2019-01-04 | 白杨 | A kind of item quantity calculation method based on weighing |
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| CN109060101A (en) * | 2018-09-17 | 2018-12-21 | 广州市贺氏办公设备有限公司 | A kind of electronic scale environment self-adaption method of adjustment and system |
| CN111829639A (en) * | 2019-04-15 | 2020-10-27 | 北京万集科技股份有限公司 | Calibration method of combined truck scale |
| CN113483876A (en) * | 2021-07-01 | 2021-10-08 | 南方电网电力科技股份有限公司 | Automatic control method for calibration of belt scale of coal feeder and related device |
| CN113504005A (en) * | 2021-07-13 | 2021-10-15 | 武汉飞恩微电子有限公司 | Calibration method, device and equipment of pressure sensor and storage medium |
| CN114923549A (en) * | 2022-06-06 | 2022-08-19 | 浙江中烟工业有限责任公司 | Method for adjusting conveyer belt of belt scale |
| CN114910153A (en) * | 2022-06-14 | 2022-08-16 | 上海佑久健康科技有限公司 | Method, device, server, system and computer-readable storage medium for online detection of weight deviation |
| CN114910153B (en) * | 2022-06-14 | 2024-05-14 | 上海佑久健康科技有限公司 | Method, device, server, system and computer readable storage medium for on-line detecting weight deviation |
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