CN102853893B - Electronic balance and correction method and device of weight sensor of electronic balance - Google Patents
Electronic balance and correction method and device of weight sensor of electronic balance Download PDFInfo
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- CN102853893B CN102853893B CN201110178105.2A CN201110178105A CN102853893B CN 102853893 B CN102853893 B CN 102853893B CN 201110178105 A CN201110178105 A CN 201110178105A CN 102853893 B CN102853893 B CN 102853893B
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- weight sensor
- output valve
- electronic scales
- linearity
- electronic balance
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Abstract
The invention discloses an electronic balance and a correction method and a device of a weight sensor of the electronic balance. The method comprises the following steps of: acquiring current output values of the weight sensor; matching corresponding functional relationships with the output values according to the output values, wherein the functional relationships are used for identifying gradients of curves of electronic balance linearity, and under the curves used for identifying the electronic balance linearity, different output values correspond to different linearities; acquiring corresponding correction values according to the matched functional relationships; and performing correction on the current output values of the weight sensor according to acquired correction values. By means of the electronic balance and correction method and the device of the weight sensor of the electronic balance, line segments used for identifying electronic balance linearity in the prior art is changed into the curves, and by means of the curves, different output values correspond to different linearities. By means of the electronic balance and correction method and the device of the weight sensor of the electronic balance, output values can be more close to actual weights, elimination rate of weight sensors with low linearity is reduced, and output accuracy of weight sensors is further improved.
Description
Technical field
The invention belongs to metering field, particularly relate to bearing calibration and the device of a kind of electronic scales and weight sensor thereof.
Background technology
The electronic scales of present technology is all be that linear hypothesis carries out producing based on weight sensor, therefore, weight sensor be linearly a very crucial index, whether the metering directly affecting electronic scales qualified.And linear substandard weight sensor can only demote use or scrap, this causes the huge waste of the cost of electronic scales.
How reducing the mortality of linear lower weight sensor, improve the output accuracy of weight sensor, is one of direction of metering field research.
Summary of the invention
The object of the present invention is to provide bearing calibration and the device of a kind of electronic scales and weight sensor thereof, be intended to the mortality reducing linear lower weight sensor, improve the output accuracy of weight sensor.
The present invention is achieved in that a kind of bearing calibration of weight sensor of electronic scales, said method comprising the steps of:
Obtain the output valve that weight sensor is current;
The linearity corresponding with this output valve according to described output valve coupling, wherein, the described linearity is for identifying the linear slope of a curve of described electronic scales, under identifying the linear curve of described electronic scales, the linearity that different output valve correspondences is different;
Corresponding corrected value is obtained according to the linearity matched;
The output valve current to described weight sensor according to the corrected value obtained corrects;
The linear curve of the described electronic scales of described mark is a camber line, or the linear curve of the described electronic scales of described mark is made up of many line segments;
Described corrected value determined by the current output valve of described weight sensor and described funtcional relationship.
The present invention is achieved in that a kind of means for correcting of weight sensor of electronic scales, and described device comprises:
Output valve acquisition module, for obtaining the current output valve of weight sensor;
Linearity matching module, for the linearity corresponding with this output valve according to described output valve coupling, wherein, the described linearity is for identifying the linear slope of a curve of described electronic scales, for under identifying the linear curve of described electronic scales, the linearity that different output valves is corresponding different;
Corrected value acquisition module, for obtaining corresponding corrected value according to the linearity matched;
Correction module, corrects for the output valve current to described weight sensor according to the corrected value obtained;
The linear curve of the described electronic scales of described mark is a camber line, or the linear curve of the described electronic scales of described mark is made up of many line segments;
Described corrected value determined by the current output valve of described weight sensor and described funtcional relationship.
The present invention is achieved in that a kind of electronic scales, and described electronic scales comprises the means for correcting of the weight sensor of electronic scales provided by the invention.
In the present invention, change the line segment being used in prior art identifying described electronic scales linear into curve, under this curve, the Linearity that different output valves is corresponding different, after the output valve obtaining weight sensor, mate the linearity that this output valve is corresponding, and then obtain should the corrected value of the linearity, and output valve is corrected, the present invention makes output valve can more the weighing of approaching to reality, decrease the mortality of linear lower weight sensor, but also improve the output accuracy of weight sensor.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the bearing calibration of the weight sensor of electronic scales provided by the invention;
Fig. 2 is the schematic diagram of the funtcional relationship funtcional relationship between the current output valve of weight sensor provided by the invention and corrected value;
Fig. 3 is the structural drawing of the means for correcting of the weight sensor of electronic scales provided by the 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.
Fig. 1 is the process flow diagram of the bearing calibration of weight sensor according to electronic scales of the present invention.
In step S101, prestore the linearity of weight sensor.
Wherein, the described linearity is for identifying the linear slope of a curve of described electronic scales, under identifying the linear curve of described electronic scales, and the Linearity that different output valves is corresponding different.
Preferably, the curve that the described electronic scales of described mark is linear is a camber line.
Preferably, the linear curve of the described electronic scales of described mark is made up of many line segments, refers to Fig. 2.
In step s 102, the current output valve of weight sensor is obtained.
In step s 103, corresponding with this output valve according to the described output valve coupling linearity.
Wherein, described corrected value determined by the current output valve of described weight sensor and described funtcional relationship.
In step S104, obtain corresponding corrected value according to the linearity matched.
In step S105, the output valve current to described weight sensor according to the corrected value obtained corrects.
In step s 106, the output valve after output calibration.
Fig. 2 is the schematic diagram of the funtcional relationship between the output valve of weight sensor provided by the invention and corrected value.As shown in Figure 2, X direction represents the output valve of weight sensor, and y direction represents the corrected value corresponding with output valve, and this corrected value and output valve are the linear ratio relation of segmenting.In the ideal situation, the output valve of weight sensor should and the actual weight of object between linear ratio relation in 1:1, the namely slope straight line that equals 1, but in real work, weight sensor is stressed, weighing structure and various factors impact, deviation can be there is along with the increase of weight of object between its output valve and actual weight of object, through theoretical analysis and the actual verification of invention, it is roughly the linear functional relation in segmentation between the output valve of weight sensor and the actual weight of object, namely corresponding relation therebetween can be represented with segmented linear, its schematic diagram as shown in Figure 2, function corresponding relation between the output valve of weight sensor and corrected value represent for by true origin to A point, A point is to B point, B point is to C point, C point is to four sections of piecewise linear functions of D point.Certainly, those skilled in the art should know, Fig. 2 is a kind of function schematic diagram between the output valve of weight sensor and corrected value, be not intended to limit the corresponding relation between the output valve of weight sensor of the present invention and corrected value, in some cases, being such as the environmental factor such as temperature, humidity when changing, also can be nonlinear corresponding relation between the output valve of weight sensor and corrected value.
When the output valve that known weight sensor is current, by the funtcional relationship between the output valve of weight sensor as shown in Figure 2 and corrected value, corresponding corrected value can be obtained.In the preferred embodiment of the present invention, corrected value is the final output valve of electronic scales.In another embodiment of the invention, corrected value can be a positive negative justification value, and the current output valve of weight sensor is added to obtain the final output valve of electronic scales with this adjusted value.
Fig. 3 shows the structure of the means for correcting of the weight sensor of electronic scales provided by the invention.
Wherein, funtcional relationship memory module 31 prestores the funtcional relationship of weight sensor, and wherein, the funtcional relationship of described weight sensor is made up of many end to end line segments, and the corresponding corrected value of every bar line segment, specifically refers to Fig. 2.
Output valve acquisition module 32 obtains the current output valve of weight sensor;
The line segment that funtcional relationship matching module 33 is corresponding with this output valve according to described output valve coupling, wherein, the funtcional relationship of the corresponding described weight sensor of described line segment, the funtcional relationship of described weight sensor is made up of many above-mentioned line segments, the corresponding corrected value of every bar line segment;
Wherein, described corrected value determined by the current output valve of described weight sensor and described funtcional relationship.Corrected value acquisition module 34 obtains corresponding corrected value according to the linearity matched.
Correction module 35 corrects according to the corrected value output valve current to described weight sensor obtained.
Output valve after output module 36 output calibration.
The present invention also provides a kind of electronic scales, and described electronic scales comprises the means for correcting of the weight sensor of electronic scales provided by the invention, in view of this device is described later in detail above, repeats no more herein.
In the present invention, change the line segment being used in prior art identifying described electronic scales linear into curve, under this curve, the Linearity that different output valves is corresponding different, after the output valve obtaining weight sensor, mate the linearity that this output valve is corresponding, and then obtain should the corrected value of the linearity, and output valve is corrected, the present invention makes output valve can more the weighing of approaching to reality, decrease the mortality of linear lower weight sensor, but also improve the output accuracy of weight sensor.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. a bearing calibration for the weight sensor of electronic scales, is characterized in that, said method comprising the steps of:
Obtain the output valve that weight sensor is current;
The linearity corresponding with this output valve according to described output valve coupling, wherein, the described linearity is for identifying the linear slope of a curve of described electronic scales, under identifying the linear curve of described electronic scales, the linearity that different output valve correspondences is different;
Corresponding corrected value is obtained according to the linearity matched;
The output valve current to described weight sensor according to the corrected value obtained corrects;
The linear curve of the described electronic scales of described mark is a camber line, or the linear curve of the described electronic scales of described mark is made up of many line segments;
Described corrected value determined by the output valve sum functions relation that described weight sensor is current.
2. a means for correcting for the weight sensor of electronic scales, is characterized in that, described device comprises:
Output valve acquisition module, for obtaining the current output valve of weight sensor;
Linearity matching module, for the linearity corresponding with this output valve according to described output valve coupling, wherein, the described linearity is for identifying the linear slope of a curve of described electronic scales, for under identifying the linear curve of described electronic scales, the linearity that different output valves is corresponding different;
Corrected value acquisition module, for obtaining corresponding corrected value according to the linearity matched;
Correction module, corrects for the output valve current to described weight sensor according to the corrected value obtained;
The linear curve of the described electronic scales of described mark is a camber line, or the linear curve of the described electronic scales of described mark is made up of many line segments;
Described corrected value determined by the output valve sum functions relation that described weight sensor is current.
3. an electronic scales, is characterized in that, described electronic scales comprises the means for correcting of the weight sensor of electronic scales according to claim 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110178105.2A CN102853893B (en) | 2011-06-28 | 2011-06-28 | Electronic balance and correction method and device of weight sensor of electronic balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110178105.2A CN102853893B (en) | 2011-06-28 | 2011-06-28 | Electronic balance and correction method and device of weight sensor of electronic balance |
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| CN102853893A CN102853893A (en) | 2013-01-02 |
| CN102853893B true CN102853893B (en) | 2015-04-08 |
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| CN201110178105.2A Expired - Fee Related CN102853893B (en) | 2011-06-28 | 2011-06-28 | Electronic balance and correction method and device of weight sensor of electronic balance |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840247A (en) * | 2017-04-13 | 2017-06-13 | 深圳怡化电脑股份有限公司 | A kind of linear sensor bearing calibration and device |
| CN108801430B (en) * | 2017-05-05 | 2020-03-10 | 广东美的生活电器制造有限公司 | Method and device for correcting weighing zero point and liquid heating container |
| CN107389176A (en) * | 2017-07-13 | 2017-11-24 | 铜陵凯特尔科技有限责任公司 | It is a kind of based on the intelligent weighing method repeatedly calibrated |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2212622A (en) * | 1987-11-21 | 1989-07-26 | Sartorius Gmbh | Electronic weighing machine |
| CN2932310Y (en) * | 2006-07-07 | 2007-08-08 | 富享微电子(深圳)有限公司 | Integrated circuit, measuring device convenient for self-calibration |
| CN101303253A (en) * | 2007-05-10 | 2008-11-12 | 深圳市宽恒科技有限公司 | Electronic scale circuit for preventing corrected data being rewritten and method for correcting and testing electronic scale by the same circuit |
-
2011
- 2011-06-28 CN CN201110178105.2A patent/CN102853893B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2212622A (en) * | 1987-11-21 | 1989-07-26 | Sartorius Gmbh | Electronic weighing machine |
| CN2932310Y (en) * | 2006-07-07 | 2007-08-08 | 富享微电子(深圳)有限公司 | Integrated circuit, measuring device convenient for self-calibration |
| CN101303253A (en) * | 2007-05-10 | 2008-11-12 | 深圳市宽恒科技有限公司 | Electronic scale circuit for preventing corrected data being rewritten and method for correcting and testing electronic scale by the same circuit |
Non-Patent Citations (2)
| Title |
|---|
| 传感器软件非线性校正方法综述;范铠;《上海计量测试》;20040425(第2期);全文 * |
| 蔡兵.几种简单的传感器非线性校正技术.《长江大学学报(自然科学版)》.2004,第1卷(第1期), * |
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