CN102359813B - Calibrating method of weighing sensor of belt scale - Google Patents
Calibrating method of weighing sensor of belt scale Download PDFInfo
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- CN102359813B CN102359813B CN201110242156.7A CN201110242156A CN102359813B CN 102359813 B CN102359813 B CN 102359813B CN 201110242156 A CN201110242156 A CN 201110242156A CN 102359813 B CN102359813 B CN 102359813B
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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 weighing sensor of belt scale cumulative amount calibration.
Background technology
Belted electronic balance is widely used as the weighing equipment of belt conveyor convey materials at present, and in actual application, the factor that affects weighing precision is a lot, often there is the inaccurate phenomenon of metering, while causing economic loss especially as batching metering, directly affect product quality.Owing to causing the factor of weighing precision error to be subject to 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, current calibration steps mainly relies on commissioning staff's experience and skill level, debugging total accumulation, especially for multiple LOAD CELLS systems, the not only low inhomogeneous situation of LOAD CELLS cumulative amount that also easily causes of efficiency.In service in weighing, owing to lacking, the real-time status of LOAD CELLS is detected, conventionally take the method for periodic check, in causing maintenance superfluous, cannot carry out preventive maintenance, can only take passive correction maintenance.Exploitation one can detect in real time to LOAD CELLS cumulative amount, improves debugging efficiency, has error following function, realizes the technology of trouble-saving, is that those skilled in the art are badly in need of the technical matters solving.
Summary of the invention
The object of the invention is to provide a kind of weighing sensor of belt scale cumulative amount calibration steps, solve current belt conveyer scale owing to cannot LOAD CELLS cumulative amount error being detected in real time, cause that debugging efficiency is low, maintenance is large and carries out the problem of trouble-saving.
The object of the present invention is achieved like this: this weighing sensor of belt scale cumulative amount calibration steps, and its process is:
A, calculating calibrates the standard regions for the calibration of weighing sensor cumulative amount, and record standard regions and the total accumulation of various operating modes: cumulative amount and the total accumulation of the single LOAD CELLS of the different operating modes while calculating Weighing system serviceable condition by integrating instrument, calculate respectively the cumulative amount of single LOAD CELLS and total accumulation business's logarithm value, within a predetermined period of time, obtain one group of logarithmic curve take zero point as basic point, getting maximal value and the minimum value of curve revises, the revised interval using zero point as basic point is as the standard regions of comparison use, and record standard regions and the total accumulation of various operating modes,
B, calculating the value at real-time zero point of LOAD CELLS cumulative amount compares with the standard regions of recording, zero point, value was qualified in standard regions in real time, zero point, value was defective outside standard regions in real time: the corresponding operating mode total accumulation business logarithm value of calculating each LOAD CELLS cumulative amount and record when debugging calibration, obtain value at real-time zero point, by real-time zero point value compare with corresponding standard regions, calibration debugging working condition LOAD CELLS cumulative amount, in like manner, when operation calibration, calculate each LOAD CELLS cumulative amount and weigh operating mode total accumulation business logarithm value, obtain value at real-time zero point, by real-time zero point value compare with corresponding standard regions, correcting travel operating mode LOAD CELLS cumulative amount.
The related algorithm that described logarithm value 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;
Lg=natural logarithm.
Described predetermined amount of time is at least to move one week based on belt, the needed time.
Described standard regions is the modification method based on adopting automatic or manual, calibration areas, error district and the faulty section of acquisition, and interval value increases successively;
The related algorithm that the modification method of standard regions establishes an equation at least as follows:
Z1＝(IDmax1+1Dminl)/2
Z1＜Z2＜Z1+a
Z2＜Z3＜Z2+b
Wherein:
The absolute value of the max log value of 1Dmax1=weighing sensor cumulative amount;
The absolute value of the minimum logarithm value of 1Dmin1=weighing sensor cumulative amount;
The correction factor in a=error district;
The correction factor of b=faulty section;
Z1=calibration areas is the interval of the positive negative value composition based on take zero point as basic point;
Z2=error district is based on the revised positive and negative interval being positioned at outside calibration areas of calibration areas;
Z3=faulty section is based on the revised positive and negative interval being positioned at outside error district, error district.
Described debugging calibration comprises unloaded and chain code or link code load calibration, and step comprises:
Step 1, complete after installation, under idle condition, successively calculate the value at real-time zero point of each LOAD CELLS cumulative amount and compare with corresponding calibration areas, the value at real-time zero point that automatically obtains each LOAD CELLS cumulative amount exceeds the error amount of calibration areas, and sorts by size;
Step 2, when defective, adjust weighing mechanism, wherein, described weighing mechanism is for claiming frame, LOAD CELLS, belt; Until be worth each real-time zero point in corresponding standard regions;
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 with corresponding standard regions, qualified calibration completes, defective repetition above-mentioned steps.
Described operation calibration is the calibration based in weighing process, value at real-time zero point by the each LOAD CELLS cumulative amount of Real-Time Monitoring is compared with corresponding standard regions, record simultaneously and be worth curve real-time zero point, when real-time zero point value enter faulty section or in error district, think need to calibrate time, carry out by the following method:
(1) when unloaded, extract and be worth operation curve all real-time zero points, analyzing failure cause, is undertaken by debugging calibration steps;
(2) adjust less LOAD CELLS and the mechanism of real-time value at zero point;
(3) less load cell signal or the cumulative amount of automatism isolation value at real-time zero point, recalculates total accumulation, as the defective feed that stops still, transfers to analyze and is worth operation curve real-time zero point, carries out debugging calibration steps.
Beneficial effect: by each LOAD CELLS cumulative amount is set up to different standard regions, convert the cumulative amount constantly changing to quantitative values, realize quantitative values comparison, the technical barrier that has solved prior art cumulative amount and be all variable and cannot detect, thereby debugging efficiency and precision are improved, meet fault trend monitoring, change fault after-sales service into trouble-saving, for the development of novel control instrument provides new thinking and direction, solve those skilled in the art and be badly in need of the technical matters solving.
Advantage:
1, carry out single LOAD CELLS cumulative amount judgement, accurately screening out is which LOAD CELLS and place system exist error, and calibration has more purpose, has overcome the Dependence Problem to commissioning staff's experience, makes verification more accurate, convenient.
2, correction maintenance is changed into maintenance in advance, reduce failure rate, be also conducive to the robotization of equipment control.
3, judge combination with trend, judging fault type is precognition fault or catastrophic failure, reduces servicing time, increases work efficiency, and be easy to realize isolated fault source, recalculates cumulative amount, maintains weighing and carries out continuously.
Accompanying drawing explanation
Fig. 1: standard regions of the present invention schematic diagram.
Fig. 2: the process flow diagram that draw standard regions of the present invention.
Fig. 3: the present invention debugs calibration process flow diagram.
Fig. 4: the present invention moves calibration process flow diagram.
Specific implementation method
This implementation method is for a better understanding of the present invention, is not used in restriction condition of the present invention.
Embodiment 1: calibrating method of weighing sensor of belt scale, comprising:
1, calculating calibrates the standard regions for the calibration of weighing sensor cumulative amount, and record standard regions and the total accumulation of various operating modes: cumulative amount and the total accumulation of the single LOAD CELLS of the different operating modes while calculating Weighing system serviceable condition by integrating instrument, calculate respectively the cumulative amount of single LOAD CELLS and total accumulation business's logarithm value, within a predetermined period of time, obtain one group of logarithmic curve take zero point as basic point, getting maximal value and the minimum value of curve revises, the revised interval using zero point as basic point is as the standard regions of comparison use, and record standard regions and the total accumulation of various operating modes, wherein: cumulative amount when cumulative amount comprises zero load, chain code and weighs operating mode, total accumulation when total accumulation comprises zero load, chain code or link code operating mode.
Preferably, logarithm value is calculated the related algorithm establishing 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 to be greater than zero integer;
Lg=natural logarithm.
Predetermined amount of time is at least to move one week based on belt, the needed time.
Standard regions is the modification method based on adopting automatic or manual, calibration areas, error district and the faulty section of acquisition, and interval value increases successively;
Preferably, the related algorithm that the modification method of standard regions establishes an equation at least as follows:
Z1＝(IDmax1+1Dminl)/2
Z1＜Z2＜Z1+a
Z2＜Z3＜Z2+b
Wherein:
The absolute value of the max log value of 1Dmax1=weighing sensor cumulative amount;
The absolute value of the minimum logarithm value of 1Dmin1=weighing sensor cumulative amount;
The correction factor in a=error district;
The correction factor of b=faulty section;
Z1=calibration areas is the interval of the positive negative value composition based on take zero point as basic point;
Z2=error district is based on the revised positive and negative interval being positioned at outside calibration areas of calibration areas;
Z3=faulty section is based on the revised positive and negative interval being positioned at outside error district, error district.
2, calculating the value at real-time zero point of LOAD CELLS cumulative amount compares with the standard regions of recording, zero point, value was qualified in standard regions in real time, zero point, value was defective outside standard regions in real time: the corresponding operating mode total accumulation business logarithm value of calculating each LOAD CELLS cumulative amount and record when debugging calibration, obtain value at real-time zero point, by real-time zero point value compare with corresponding standard regions, calibration debugging working condition LOAD CELLS cumulative amount, in like manner, when operation calibration, calculate each LOAD CELLS cumulative amount and weigh operating mode total accumulation business logarithm value, obtain value at real-time zero point, by real-time zero point value compare with corresponding standard regions, correcting travel operating mode LOAD CELLS cumulative amount, wherein:
Preferably, as accompanying drawing 3, debugging calibration comprises unloaded calibration and chain code or link code load calibration, and step comprises:
Step 1, complete after installation, under idle condition, the value at real-time zero point of successively calculating each LOAD CELLS cumulative amount is that unloaded calibration areas is compared 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, adjust weighing mechanism, wherein, described weighing mechanism is for claiming frame, LOAD CELLS, belt; Re-execute above-mentioned steps, until be worth each real-time zero point in corresponding standard regions;
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 with corresponding standard regions, qualified calibration completes, defective repetition above-mentioned steps.
Preferably, as accompanying drawing 4, operation calibration is the calibration based in weighing process, value at real-time zero point by the each LOAD CELLS cumulative amount of Real-Time Monitoring is compared with corresponding standard regions, record simultaneously and be worth curve real-time zero point, when real-time zero point value enter faulty section or in error district, think need to calibrate time, carry out by the following method:
● when unloaded, extract and be worth operation curve all real-time zero points, analyzing failure cause, is undertaken by debugging calibration steps;
● adjust less LOAD CELLS and the mechanism of real-time value at zero point;
● less load cell signal or the cumulative amount of automatism isolation value at real-time zero point, recalculate total accumulation, as the defective feed that stops still, transfer to analyze and be worth operation curve real-time zero point, carry out debugging calibration steps.
LOAD CELLS cumulative amount when described correspondence refers to zero load is corresponding to unloaded total accumulation, and LOAD CELLS cumulative amount when link code is corresponding to link code total accumulation, and LOAD CELLS cumulative amount when weighing weighs cumulative amount corresponding to reality; Corresponding standard regions refers to zero load, link code, weighing operating mode, for the standard regions of debugging, error is followed the tracks of, fault judges.
Claims (5)
1. a weighing sensor of belt scale cumulative amount calibration steps, is characterized in that, calibration steps comprises:
A, calculating calibrates the standard regions for the calibration of weighing sensor cumulative amount, and record standard regions and the total accumulation of various operating modes: cumulative amount and the total accumulation of the single LOAD CELLS of the different operating modes while calculating Weighing system serviceable condition by integrating instrument, calculate respectively the cumulative amount of single LOAD CELLS and total accumulation business's logarithm value, within a predetermined period of time, obtain one group of logarithmic curve take zero point as basic point, getting maximal value and the minimum value of curve revises, the revised interval using zero point as basic point is as the standard regions of comparison use, and record standard regions and the total accumulation of various operating modes,
Described standard regions is the modification method based on adopting automatic or manual, calibration areas, error district and the faulty section of acquisition, and interval value increases successively;
B, calculating the value at real-time zero point of LOAD CELLS cumulative amount compares with the standard regions of recording, zero point, value was qualified in standard regions in real time, zero point, value was defective outside standard regions in real time: the corresponding operating mode total accumulation business logarithm value of calculating each LOAD CELLS cumulative amount and record when debugging calibration, obtain value at real-time zero point, by real-time zero point value compare with corresponding standard regions, calibration debugging working condition LOAD CELLS cumulative amount, in like manner, when operation calibration, calculate each LOAD CELLS cumulative amount and weigh operating mode total accumulation business logarithm value, obtain value at real-time zero point, by real-time zero point value compare with corresponding standard regions, correcting travel operating mode LOAD CELLS cumulative amount.
2. weighing sensor of belt scale cumulative amount calibration steps as claimed in claim 1, is characterized in that: the related algorithm that logarithm value 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;
Lg=natural logarithm.
3. weighing sensor of belt scale cumulative amount calibration steps as claimed in claim 1, is characterized in that: predetermined amount of time is at least to move one week based on belt the needed time.
4. weighing sensor of belt scale cumulative amount calibration steps as claimed in claim 1, is characterized in that: debugging calibration comprises unloaded and chain code or link code load calibration, and step comprises:
Step 1, complete after installation, under idle condition, successively calculate the value at real-time zero point of each LOAD CELLS cumulative amount and compare with corresponding calibration areas, the value at real-time zero point that automatically obtains each LOAD CELLS cumulative amount exceeds the error amount of calibration areas, and sorts by size;
Step 2, when defective, adjust weighing mechanism, wherein, described weighing mechanism is for claiming frame, LOAD CELLS, belt; Re-execute above-mentioned steps, until be worth each real-time zero point in corresponding standard regions;
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 with corresponding standard regions, qualified calibration completes, defective repetition above-mentioned steps.
5. weighing sensor of belt scale cumulative amount calibration steps as claimed in claim 1, it is characterized in that, operation calibration is the calibration based in weighing process, value at real-time zero point by the each LOAD CELLS cumulative amount of Real-Time Monitoring is compared with corresponding standard regions, record simultaneously and be worth curve real-time zero point, when real-time zero point value enter faulty section or in error district, think need to calibrate time, carry out by the following method:
(1) when unloaded, extract and be worth operation curve all real-time zero points, analyzing failure cause, is undertaken by debugging calibration steps;
(2) adjust less LOAD CELLS and the mechanism of real-time value at zero point;
(3) less load cell signal or the cumulative amount of automatism isolation value at real-time zero point, recalculates total accumulation, as the defective feed that stops still, transfers to analyze and is worth operation curve real-time zero point, carries out debugging calibration steps.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN104006868B (en) * | 2013-02-26 | 2016-04-13 | 梅特勒-托利多(常州)精密仪器有限公司 | Artificial intelligence formula LOAD CELLS and self-diagnosing method thereof |
| CN109145398B (en) * | 2018-07-30 | 2024-01-05 | 白杨 | Goods quantity calculating method based on weighing |
| CN109060101B (en) * | 2018-09-17 | 2020-08-28 | 广州市贺氏办公设备有限公司 | Electronic scale environment self-adaptive adjusting method and system |
| CN111829639B (en) * | 2019-04-15 | 2022-04-12 | 北京万集科技股份有限公司 | Calibration method of combined truck scale |
| CN113483876B (en) * | 2021-07-01 | 2023-05-16 | 南方电网电力科技股份有限公司 | Automatic control method and related device for calibrating belt scale of coal feeder |
| 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 |
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| EP1417467A4 (en) * | 2001-07-05 | 2007-06-27 | Schenck Rotec Corp | Self-calibrating machines for balancing work pieces and methods of machine calibration |
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| CN1896698A (en) * | 2005-07-12 | 2007-01-17 | 铜陵市三爱思电子有限公司 | Method for checking electronic belt scale and its checker |
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