CN105258779A - Automatic calibration method of electronic scale - Google Patents
Automatic calibration method of electronic scale Download PDFInfo
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- CN105258779A CN105258779A CN201510736700.1A CN201510736700A CN105258779A CN 105258779 A CN105258779 A CN 105258779A CN 201510736700 A CN201510736700 A CN 201510736700A CN 105258779 A CN105258779 A CN 105258779A
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Abstract
The invention discloses an automatic calibration method of an electronic scale. The automatic calibration method comprises steps of dividing the maximum measurement scale into multiple sections; acquiring the AD value of a sensor during the zero load of the electronic scale; acquiring the AD value of the sensor when the electronic scale carries an object; judging whether the section where the object is arranged have been calibrated or not; acquiring the sensor AD value when the electronic scale carries the object and a fixed weight; calculating the linear coefficient of the section and marking that the section has been calibrated; and calculating the actual weight of the object so as to finish the automatic calibration of the electronic scale. According to the invention, the sensor is divided into multiple sections with smaller linearity according to the linear characteristics of the sensor, the fixed weight with known weight is used as the reference substance, and the AD value of the sensor, which is acquired in real time, is used for calibrating the linear coefficient of each of the sections, thereby achieving the automatic calibration of the actual weight of the object.
Description
Technical field
The invention belongs to electronic scales field of measuring technique, particularly relate to a kind of electronic scales automatic calibrating method.
Background technology
Electronic scales, due to features such as its measurement range are wide, measuring accuracy is high, easy to operate, is applied more and more extensive in our daily life.In the market of farm produce, market, the place such as supermarket can see its figure.In order to ensure accuracy and the authority of electronic scales weighing, all need when dispatching from the factory to carry out proving operation, but due to the physical characteristics of electronic scales itself and the opering characteristic of electric apparatus of sensor, when after use certain hour, the inaccuracy of weighing will be caused.In order to ensure its accuracy in use, mainly process in the following ways at present: (1) is when finding that electronic scales weighs inaccurate, send electronic scales back to producer or calibration is demarcated again by authoritative institution, its extra cost will be produced in this way, delay user time; (2) user's self-calibration, some electronic scales is when dispatching from the factory, and producer is in order to later stage demarcation convenience, generally all leave background process, user just can oneself demarcate according to handbook, and this mode is undesirable, user can carry out random amendment calibration value, practises fraud; (3) software process, some electronic scales is optimized on software, such as adopts multiple averaging value when measuring, or carries out metering skew tracking, adopt in this way, to make the inaccurate time retardation of metering, but along with service time more of a specified duration, due to its device self character, still metering can be caused inaccurate, can not tackle the problem at its root, and when offseting greatly to a certain extent, software also cannot be calibrated.
Summary of the invention
Goal of the invention of the present invention is: in order to solve the above problem that in prior art, electronic scales calibration exists, the present invention proposes a kind of electronic scales automatic calibrating method.
Technical scheme of the present invention is: a kind of electronic scales automatic calibrating method, comprises the following steps:
A, the maximum range of electronic scales is divided into multiple section;
The AD value of sensor when B, collection electronic scales are unloaded;
C, article are placed on electronic scales, gather the AD value of sensor during electronic scales load article;
D, judge whether article place section is calibrate; If article place section is calibrated, then carry out step G; If article place section is not calibrated, then carry out step e;
E, the fixing counterweight of loading, on sensor, gather the AD value of sensor when electronic scales load article and fixing counterweight;
The linear coefficient of F, calculating article place section, and mark this section for calibrate;
The actual weight of G, calculating article, completes electronic scales automatic calibration.
Further, the counterweight value of described fixing counterweight is greater than the accuracy value of 10 times of electronic scaless.
Further, the linear coefficient computing formula of described article place section is specially:
Wherein, K
kfor linear coefficient, W
cfor the counterweight value of fixing counterweight, A
cfor the AD value of sensor when electronic scales load article and fixing counterweight, A
0for the AD value of sensor during electronic scales zero load.
Further, the computing formula of the actual weight of described article is specially:
W
x＝K
k(A
x-A
0)
Wherein, W
xfor the actual weight of article, A
xfor the AD value of sensor during electronic scales load article.
The invention has the beneficial effects as follows: the present invention is according to the linear characteristic of sensor, sensor is divided into the less section of multiple linearity, utilize the fixing counterweight of known weight as object of reference, calibrated by the linear coefficient of AD value to each section of Real-time Collection sensor, thus the automatic calibration realized article actual weight, substantially reduce the weighing error of electronic scales, improve the fairness of electronic scales, save human cost.
Accompanying drawing explanation
Fig. 1 is electronic scales automatic calibrating method schematic flow sheet of the present invention.
Fig. 2 is the relation curve schematic diagram of Item Weight and sensors A D value in the embodiment of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 1, be electronic scales automatic calibrating method schematic flow sheet of the present invention.A kind of electronic scales automatic calibrating method, comprises the following steps:
A, the maximum range of electronic scales is divided into multiple section;
The AD value of sensor when B, collection electronic scales are unloaded;
C, article are placed on electronic scales, gather the AD value of sensor during electronic scales load article;
D, judge whether article place section is calibrate; If article place section is calibrated, then carry out step G; If article place section is not calibrated, then carry out step e;
E, the fixing counterweight of loading, on sensor, gather the AD value of sensor when electronic scales load article and fixing counterweight;
The linear coefficient of F, calculating article place section, and mark this section for calibrate;
The actual weight of G, calculating article, completes electronic scales automatic calibration.
In step, according to the maximum range of electronic scales, be divided into multiple section; The section quantity divided can require to set according to the different accuracy of the linearity of sensor and different electronic scales; For the sensor that the linearity is larger, need the section maximum range of electronic scales being divided into a greater number, to ensure that each section has the less linearity; For the sensor that the linearity is less, the maximum range of electronic scales can be divided into the section of lesser amt, as long as meet each section there is the less linearity.By dividing the maximum range of electronic scales, can ensure that sensor has the less linearity in each section, thus reduce the weighing error of electronic scales.
In stepb, after electronic scales start is stable, not placing articles, makes electronic scales be in light condition, gathers the AD value of now sensor, is designated as A
0; Here the AD value of sensor refers to and converts analog quantity to value after digital quantity.
In step C, article to be measured are placed on electronic scales, make electronic scales load article to be measured, gather the AD value of now sensor, be designated as A
x.
In step D, in order to reduce time delay when article weigh, improve electronic scales work efficiency, the present invention judges whether the weight place section waiting to weigh article carried out calibration; If the weight place section of article is calibrated, then carry out step G, directly calculate the actual weight of article, avoid and recalibration is carried out to this section, save article and weigh required time; If the weight place section of article is calibrated, then need to calibrate this section, carry out step e.Preferably, due to the change along with the time, the linearity of sensor can change, cause the linear coefficient of each section also can send change, therefore can according to different demands, by setting calibration cycle, calibration is re-started to each section calibrated, thus ensure the weighing error reducing electronic scales, improve the fairness of electronic scales.
In step e, calibrate to realize automatically treating the weight place section weighing article, the fixing counterweight of known weight is loaded on the sensor of the electronic scales being loaded with article to be measured by driving mechanism by the present invention, namely electronic scales load article and fixing counterweight is simultaneously made, thus improve the work efficiency of electronic scales weighing, the counterweight value of fixing counterweight is designated as W
c; Gather the AD value of sensor when electronic scales load article and fixing counterweight again, be designated as A
c.Here driving mechanism is the common technology means of those skilled in the art, and the present invention does not repeat.
The selection rule of the counterweight value of fixing counterweight of the present invention is: the volume according to electronic scales is chosen, if the volume ratio of electronic scales is comparatively large, space is more sufficient, can select the counterweight that counterweight value is larger; Choose according to electronic scales range, for the electronic scales of wide range, need the counterweight selecting counterweight value larger; Accuracy value according to electronic scales is chosen, and the counterweight value of fixing counterweight is greater than the accuracy value of 10 times of electronic scaless.
In step F, the AD value A of sensor when the present invention is unloaded according to electronic scales
0, electronic scales load article time sensor AD value A
x, fixing counterweight counterweight value W
c, electronic scales load article and fixing counterweight time sensor AD value A
ccalculate the linear coefficient of article place section.Because sensor has the less linearity, therefore can formula be obtained:
Wherein, W
xfor the actual weight of article.
Distortion is carried out to above-mentioned formula and can obtain article actual weight W
xcomputing formula:
Thus obtain linear coefficient computing formula:
Wherein, K
kfor linear coefficient.
Because electronic scales is in Long-Time Service process, electronic scales may be caused to weigh bigger than normal or less than normal, the AD value being embodied in sensor is bigger than normal or less than normal than actual value, therefore can obtain the relation curve of Item Weight and sensors A D value according to the computing formula of article actual weight, linear coefficient is rate of curve.As shown in Figure 2, be the relation curve schematic diagram of Item Weight in the embodiment of the present invention and sensors A D value, wherein, x-axis is sensors A D value, and y-axis is Item Weight; The linear coefficient of curve b is standard value, and its respective sensor AD value is actual value, and weighing the Item Weight obtained is the actual weight of article; The linear coefficient of curve a is larger than standard, and its respective sensor AD value is less than actual value, weighs the Item Weight obtained also less than normal than the actual weight of article; The linear coefficient of curve c is less than standard value, and its respective sensor AD value is larger than actual value, weighs the Item Weight obtained also bigger than normal than the actual weight of article.
The linear coefficient of article place section can be calculated according to linear coefficient computing formula, and by this segment mark for calibrate.
In step G, according to article actual weight W
xcomputing formula and the linear coefficient K of article place section
kcomputing formula can by actual weight W
xcomputing formula be deformed into:
W
x＝K
k(A
x-A
0)
The actual weight of article can be calculated according to above-mentioned formula, thus complete electronic scales automatic calibration.
Sensor, according to the linear characteristic of sensor, is divided into the less section of multiple linearity by the present invention; And utilize the fixing counterweight of known weight as object of reference, the AD value of sensor when the AD value of sensor and electronic scales load article and fixing counterweight during AD value, the electronic scales load article of sensor time unloaded by Real-time Collection electronic scales, treat the linear coefficient weighing article location section to calibrate, thus realize the automatic calibration to article actual weight; In calibration cycle, to be in calibrate section article without the need to again calibrating, substantially increase electronic scales weigh accuracy and work efficiency.
In order to further less weighing article required time, when electronic scales first time uses, the present invention, after electronic scales start is stable, makes electronic scales be in light condition; When the fixing counterweight of known weight being loaded into zero load by driving mechanism again electronic scales sensor on, and gather the AD value of now sensor; Judge that whether the AD value of now sensor is the counterweight value of fixing counterweight; If the AD value of sensor is the counterweight value of fixing counterweight, then illustrates that the error of electronic scales is less, do not need to calibrate, can directly measure article; If the AD value of sensor is not the counterweight value of fixing counterweight, then illustrate that the error of electronic scales is larger, need to calibrate it, namely electronic scales automatic calibrating method of the present invention is adopted to calibrate electronic scales, thus the automatic calibration realized article actual weight, substantially reduce the weighing error of electronic scales, save and weigh article required time, improve the fairness of electronic scales, save human cost.
Those of ordinary skill in the art will appreciate that, embodiment described here is to help reader understanding's principle of the present invention, should be understood to that protection scope of the present invention is not limited to so special statement and embodiment.Those of ordinary skill in the art can make various other various concrete distortion and combination of not departing from essence of the present invention according to these technology enlightenment disclosed by the invention, and these distortion and combination are still in protection scope of the present invention.
Claims (4)
1. an electronic scales automatic calibrating method, is characterized in that, comprises the following steps:
A, the maximum range of electronic scales is divided into multiple section;
The AD value of sensor when B, collection electronic scales are unloaded;
C, article are placed on electronic scales, gather the AD value of sensor during electronic scales load article;
D, judge whether article place section is calibrate; If article place section is calibrated, then carry out step G; If article place section is not calibrated, then carry out step e;
E, the fixing counterweight of loading, on sensor, gather the AD value of sensor when electronic scales load article and fixing counterweight;
The linear coefficient of F, calculating article place section, and mark this section for calibrate;
The actual weight of G, calculating article, completes electronic scales automatic calibration.
2. electronic scales automatic calibrating method as claimed in claim 1, it is characterized in that, the counterweight value of described fixing counterweight is greater than the accuracy value of 10 times of electronic scaless.
3. electronic scales automatic calibrating method as claimed in claim 2, it is characterized in that, the linear coefficient computing formula of described article place section is specially:
Wherein, K
kfor linear coefficient, W
cfor the counterweight value of fixing counterweight, A
cfor the AD value of sensor when electronic scales load article and fixing counterweight, A
0for the AD value of sensor during electronic scales zero load.
4. electronic scales automatic calibrating method as claimed in claim 3, it is characterized in that, the computing formula of the actual weight of described article is specially:
W
x＝K
k(A
x-A
0)
Wherein, W
xfor the actual weight of article, A
xfor the AD value of sensor during electronic scales load article.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510736700.1A CN105258779B (en) | 2015-11-03 | 2015-11-03 | Electronic scale automatic calibrating method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510736700.1A CN105258779B (en) | 2015-11-03 | 2015-11-03 | Electronic scale automatic calibrating method |
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| CN105258779A true CN105258779A (en) | 2016-01-20 |
| CN105258779B CN105258779B (en) | 2018-05-01 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907201A (en) * | 2017-10-30 | 2018-04-13 | 北京航天计量测试技术研究所 | A kind of electronic scale automatic Proofreading device |
| CN109341836A (en) * | 2018-10-31 | 2019-02-15 | 上海掌门科技有限公司 | The method and device that a kind of pair of weighing platform is calibrated |
| CN109579963A (en) * | 2019-01-18 | 2019-04-05 | 深圳市计量质量检测研究院（国家高新技术计量站、国家数字电子产品质量监督检验中心） | Autonomous type weighing anti-cheating method and system |
| CN110411550A (en) * | 2018-12-21 | 2019-11-05 | 西安新汇泽测控技术有限公司 | A kind of scaling method that lysimeter weighing system is new |
| CN110879097A (en) * | 2019-10-18 | 2020-03-13 | 南京信息工程大学滨江学院 | Portable scale and calibration method and measurement method thereof |
| WO2020206853A1 (en) * | 2019-04-11 | 2020-10-15 | 深圳市深信信息技术有限公司 | Electronic scale monitoring method and system |
| CN112082634A (en) * | 2020-09-02 | 2020-12-15 | 谢凤兰 | Remote auxiliary calibration method for electronic scale |
| CN112763046A (en) * | 2020-12-31 | 2021-05-07 | 深圳市晨北科技有限公司 | Precision calibration method for electronic scale, related equipment and storage medium |
| CN113790791A (en) * | 2021-10-28 | 2021-12-14 | 深圳市道中创新科技有限公司 | Gravity sensor calibration method for gravity vending cabinet |
| CN114344806A (en) * | 2022-01-17 | 2022-04-15 | 上海电气智能康复医疗科技有限公司 | Weight calibration system and method and balance training equipment |
| CN113790791B (en) * | 2021-10-28 | 2024-05-31 | 深圳市道中创新科技有限公司 | Gravity sensor calibration method for gravity sales counter |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107907201A (en) * | 2017-10-30 | 2018-04-13 | 北京航天计量测试技术研究所 | A kind of electronic scale automatic Proofreading device |
| CN109341836A (en) * | 2018-10-31 | 2019-02-15 | 上海掌门科技有限公司 | The method and device that a kind of pair of weighing platform is calibrated |
| CN110411550A (en) * | 2018-12-21 | 2019-11-05 | 西安新汇泽测控技术有限公司 | A kind of scaling method that lysimeter weighing system is new |
| CN109579963A (en) * | 2019-01-18 | 2019-04-05 | 深圳市计量质量检测研究院（国家高新技术计量站、国家数字电子产品质量监督检验中心） | Autonomous type weighing anti-cheating method and system |
| WO2020206853A1 (en) * | 2019-04-11 | 2020-10-15 | 深圳市深信信息技术有限公司 | Electronic scale monitoring method and system |
| CN110879097A (en) * | 2019-10-18 | 2020-03-13 | 南京信息工程大学滨江学院 | Portable scale and calibration method and measurement method thereof |
| CN112082634A (en) * | 2020-09-02 | 2020-12-15 | 谢凤兰 | Remote auxiliary calibration method for electronic scale |
| CN112763046A (en) * | 2020-12-31 | 2021-05-07 | 深圳市晨北科技有限公司 | Precision calibration method for electronic scale, related equipment and storage medium |
| CN113790791A (en) * | 2021-10-28 | 2021-12-14 | 深圳市道中创新科技有限公司 | Gravity sensor calibration method for gravity vending cabinet |
| CN113790791B (en) * | 2021-10-28 | 2024-05-31 | 深圳市道中创新科技有限公司 | Gravity sensor calibration method for gravity sales counter |
| CN114344806A (en) * | 2022-01-17 | 2022-04-15 | 上海电气智能康复医疗科技有限公司 | Weight calibration system and method and balance training equipment |
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| CN105258779B (en) | 2018-05-01 |
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