CN108489589A - A kind of drift correction method based on weighing sensor - Google Patents
A kind of drift correction method based on weighing sensor Download PDFInfo
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- CN108489589A CN108489589A CN201810211680.XA CN201810211680A CN108489589A CN 108489589 A CN108489589 A CN 108489589A CN 201810211680 A CN201810211680 A CN 201810211680A CN 108489589 A CN108489589 A CN 108489589A
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- China
- Prior art keywords
- weighing sensor
- method based
- correction method
- weight
- drift correction
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/01—Testing or calibrating of weighing apparatus
Abstract
A kind of drift correction method based on weighing sensor, is optimized by the flow to software in equipment, and the software is made to have the function of judgement and suppressed zero drift.The advantageous effect of the application is：Counting equipment null offset is solved the problems, such as by software flow, on the one hand can be reduced the cost of subsequent artefacts' maintenance, on the other hand can be reduced the difficulty of hardware design.
Description
Technical field
The application belongs to weight sensing technology field, specifically, being related to a kind of zero drift based on weighing sensor
Shift correction method.
Background technology
Weighing sensor has many applications, such as scale, kitchen scale etc. on the market at present.With technology of Internet of things
Development, it is exactly to count also to have used weighing sensor, one of which intelligent equipment in many intelligentized equipment at present
Equipment.Counting equipment (pays attention to this according to the weight of weight on a sensor and single weight weight, the quantity for calculating weight is put
A little weights weight having the same).And these counting equipments usually have the characteristics of weight needs to be placed on it for a long time.
In strain gauge load cell, most common problem is exactly null offset, in counting equipment, since weight is long
Time is placed on above, prolonged deformation, causes weighing sensor zero that irreversible drift occurs.It is thus obtained heavy
Object weight is drifted about, and then causes to count and mistake occurs.
There are mainly two types of the methods for solving the problems, such as this at present, one is by the way that weight is taken down, carries out zero correction；In addition
One is compensate bridge arm by hardware approach.Since the counting equipment quantity of mass production is very more, successively by weight take down into
Row zero compensation not only wastes a large amount of manpower and materials, but also poor user experience, therefore first method is not applicable.And second
Method realizes that difficulty is larger, and the weighing sensor of also unsuitable mass production carries out zero correction.
Invention content
In view of this, there is provided a kind of null offsets based on weighing sensor for technical problems to be solved in this application
Bearing calibration can effectively correct weight and be pressed in Zero drift in main amplifier caused by weighing sensor for a long time.
In order to solve the above-mentioned technical problem, this application discloses a kind of drift correction sides based on weighing sensor
Method, and realized using following technical scheme.
A kind of drift correction method based on weighing sensor, by the software in equipment to the weighing sensor
Carry out the judgement and correction of null offset.
Drift correction method based on weighing sensor according to claim 1, it is characterised in that：The software
Flow comprise the step of：
S1：Judge whether that null offset occurs, if then carrying out in next step；If otherwise not correcting；
S2：Zero correction is carried out by Zr_new=W-Wr1, the Zr_new represents new zero；
The W represents measured value；The Wr1 represents the gravimetric value after last correction.
Further, the S1 is specially：Judge whether Wr-Wr1 is less than or equal to default decision content, if so, judgement
Null offset occurs；If not, then it represents that null offset does not occur；The Wr represents the gravimetric value after this correction.
Further, if null offset does not occur, and current weight value with change before, then judgement weight is put
Operation that is upper or taking down.
Further, when weight has the operation put or taken down, the gravimetric value Wr is updated.
Further, the drift correction method based on weighing sensor, further includes debounce.
Further,：The debounce is before judging whether that null offset occurs.
Further, the mode of the debounce is：It is not sampled in preceding n seconds of weight change.
Further, the mode of the debounce is：N sampled value of continuous acquisition, if the difference of the n sampled value
It is estimating in range, is then using；If the difference estimates range beyond described, abandon.
Compared with prior art, the application can be obtained including following technique effect：It solves to count by software flow and set
On the one hand the problem of standby null offset, can reduce the cost of subsequent artefacts' maintenance, on the other hand can reduce hardware design
Difficulty.
Certainly, implementing any product of the application must be not necessarily required to reach all the above technique effect simultaneously.
Description of the drawings
Attached drawing described herein is used for providing further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please do not constitute the improper restriction to the application for explaining the application.In the accompanying drawings：
Fig. 1 is the flow chart of the drift correction method of the application one embodiment.
Specific implementation mode
Presently filed embodiment is described in detail below in conjunction with accompanying drawings and embodiments, thereby how the application is applied
Technological means solves technical problem and reaches the realization process of technical effect to fully understand and implement.
A kind of drift correction method based on weighing sensor carries out process optimization to the software in equipment, makes soft
Part has the function of judging null offset and correction.The drift correction method, as shown in Figure 1, specific steps packet
It includes：
S1：Acquire gravimetric value；
S2：Judge whether weight changes, if so, carrying out in next step；If it is not, returning to S001；
Here it refers to the operation put or taken down for having weight that weight, which changes,.Judge whether weight is changed
Standard is to judge whether W-Zr==Wr1 is true, if so, then weight does not change；If not, then weight becomes
Change.
Wherein, Zr refers to zero, and the measured value of weight is indicated with W, the weight Wr after this correcting process is corrected
It indicates, meets between them：Wr=W-Zr.Weight is indicated with Wr1 after last correcting process correction.
S3：Debounce；
During actual test, during taking and placing weight, the characteristics of sensor sample value will appear shake, Er Qietong
Jitter value is bigger in the case of often.Therefore before really changing weight weight or zero correction, it is necessary first to debounce.Debounce
The preceding n seconds methods not sampled of weight change can be taken, consecutive sample values n and this n sampled value difference can also be used
Method etc. in a certain range.
S4：Judge whether weight change value is more than preset thresholding, if then carrying out in next step；If otherwise entering S7；
When Wr-Wr1 is more than default decision content, judgement weight is put (when namely W-Zr-Wr1 is more than default decision content)
Operation that is upper or taking down.When W-Zr-Wr1 is less than or equal to default decision content, then judge that zero has occurred in the weighing sensor
Drift, is corrected zero.The default decision content that the present embodiment is selected is δmin* the weight of Ws, wherein δ between identical weight
Amount is poor, chooses minimum value here；Ws is that (single weight weight refers to single weight weight：This method is used in experimental stage
N identical weight weight single weight), according to the needs of available accuracy, which can be arbitrary value.
S5：Update correcting weight value；
When judgement weight has the operation put or taken down, records and show weight Wr after newest correction.
S6：More new count value returns to S1 and restarts next round correcting process；
The setting of the conditions such as delay can be also set before starting next round correcting process so that the operation of flow is more in line with reality
It needs.
S7：Suppressed zero；Suppressed zero is according to formula Zr_new=W-Wr1；Return S1 restarts next after having corrected
Take turns correcting process；
The computational methods of newest zero are Zr_new=W-Wr1.After zero correction, the weight after correction is Wr=W-
Zr_new。
S4 and S7 has sequencing, and judgements that need to first carry out S4 is determined with could carry out S7's after null offset phenomenon
Zero correction；The not stringent sequence requirement of other steps can theoretically realize the present invention by software and flow and algorithm
It realizes the judgement and correction of Zero drift in main amplifier, can be regarded as present invention thought.
Application aspect is not limited solely to technical equipment, is related to the weighing sensor pressed for a long time and condition meets this
The equipment of condition described in scheme, the method that can use the present invention carry out zero correction.
The advantageous effect of the application is：Counting equipment null offset is solved the problems, such as by software flow, it on the one hand can be with
The cost that subsequent artefacts safeguard is reduced, the difficulty of hardware design on the other hand can be reduced.
A kind of drift correction method based on weighing sensor provided above the embodiment of the present application carries out
It is discussed in detail.The description of the example is only used to help understand the method for the present application and its core ideas；Meanwhile for this
The those skilled in the art in field, according to the thought of the application, there will be changes in the specific implementation manner and application range,
In conclusion the contents of this specification should not be construed as limiting the present application.
Some vocabulary has such as been used to censure specific components in specification and claim.Those skilled in the art answer
It is understood that hardware manufacturer may call the same component with different nouns.This specification and claims are not with name
The difference of title is used as the mode for distinguishing component, but is used as the criterion of differentiation with the difference of component functionally.Such as logical
"comprising", the " comprising " of piece specification and claim mentioned in are an open language, therefore should be construed to " comprising/packet
It includes but is not limited to "." substantially " refer in receivable error range, those skilled in the art can be in certain error range
Interior solution the technical problem, basically reaches the technique effect.Specification subsequent descriptions are to implement the preferable implementation of the application
Mode, so the description is being not limited to scope of the present application for the purpose of the rule for illustrating the application.The application
Protection domain when regard appended claims institute defender subject to.
It should also be noted that, the terms "include", "comprise" or its any other variant are intended to nonexcludability
Including so that commodity or system including a series of elements include not only those elements, but also include not clear
The other element listed, or further include for this commodity or the intrinsic element of system.In the feelings not limited more
Under condition, the element that is limited by sentence "including a ...", it is not excluded that including the element commodity or system in also
There are other identical elements.
Several preferred embodiments of the application have shown and described in above description, but as previously described, it should be understood that the application
Be not limited to form disclosed herein, be not to be taken as excluding other embodiments, and can be used for various other combinations,
Modification and environment, and the above teachings or related fields of technology or knowledge can be passed through in application contemplated scope described herein
It is modified.And changes and modifications made by those skilled in the art do not depart from spirit and scope, then it all should be in this Shen
It please be in the protection domain of appended claims.
Claims (9)
1. a kind of drift correction method based on weighing sensor, it is characterised in that：By the software in equipment to described
Weighing sensor carries out the judgement and correction of null offset.
2. the drift correction method based on weighing sensor according to claim 1, it is characterised in that：The software
Flow comprises the step of：
S1：Judge whether that null offset occurs, if then carrying out in next step；If otherwise not correcting；
S2：Zero correction is carried out by Zr_new=W-Wr1, the Zr_new represents new zero；The W represents measured value；Institute
It states Wr1 and represents the gravimetric value after last correction.
3. the drift correction method based on weighing sensor according to claim 2, it is characterised in that：The S1 is specific
For：Judge whether Wr-Wr1 is less than or equal to default decision content, if so, null offset occurs for judgement；If not, then it represents that do not send out
Raw null offset；The Wr represents the gravimetric value after this correction.
4. the drift correction method based on weighing sensor according to claim 3, it is characterised in that：If zero does not occur
Point drift, and current weight value with change before, then judgement have the operation put or taken down to weight.
5. the drift correction method based on weighing sensor according to claim 4, it is characterised in that：When weight is put
When the operation gone up or taken down, the gravimetric value Wr is updated.
6. according to any drift correction methods based on weighing sensor of claim 1-5, it is characterised in that：Also wrap
Include debounce.
7. the drift correction method based on weighing sensor according to claim 6, it is characterised in that：The debounce exists
Judge whether occur null offset before.
8. the drift correction method based on weighing sensor according to claim 7, it is characterised in that：The debounce
Mode is：It is not sampled in preceding n seconds of weight change.
9. the drift correction method based on weighing sensor according to claim 7, it is characterised in that：The debounce
Mode is：N sampled value of continuous acquisition uses if the difference of the n sampled value is being estimated in range；If the difference
Value estimates range beyond described, then abandons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810211680.XA CN108489589A (en) | 2018-03-15 | 2018-03-15 | A kind of drift correction method based on weighing sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810211680.XA CN108489589A (en) | 2018-03-15 | 2018-03-15 | A kind of drift correction method based on weighing sensor |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282888A (en) * | 2018-11-22 | 2019-01-29 | 天津光电通信技术有限公司 | A kind of temperature drift antidote based on ARM of gravity sensor |
| CN109556687A (en) * | 2018-12-20 | 2019-04-02 | 帷幄匠心科技（杭州）有限公司 | Weight measurements, device, equipment and computer readable storage medium |
| CN109631975A (en) * | 2018-12-30 | 2019-04-16 | 郑州衡量科技股份有限公司 | A kind of automatic zero point track algorithm for inhibiting sensor zero to float |
| CN110702199A (en) * | 2019-09-25 | 2020-01-17 | 联想(北京)有限公司 | Information processing method and first electronic equipment |
| CN111109947A (en) * | 2019-11-28 | 2020-05-08 | 上海追月科技有限公司 | Goods shelf, goods identification method and electronic equipment |
| CN112504412A (en) * | 2020-10-19 | 2021-03-16 | 唐山钢铁集团有限责任公司 | Intelligent weighing sensor system |
| CN113701859A (en) * | 2021-08-26 | 2021-11-26 | 深圳诺博医疗科技有限公司 | Weighing counting method, device, system, computer equipment and readable storage medium |
| CN114397003A (en) * | 2021-12-27 | 2022-04-26 | 深圳市晨北科技有限公司 | Weighing calibration method, device, equipment and medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109282888A (en) * | 2018-11-22 | 2019-01-29 | 天津光电通信技术有限公司 | A kind of temperature drift antidote based on ARM of gravity sensor |
| CN109556687A (en) * | 2018-12-20 | 2019-04-02 | 帷幄匠心科技（杭州）有限公司 | Weight measurements, device, equipment and computer readable storage medium |
| CN109631975A (en) * | 2018-12-30 | 2019-04-16 | 郑州衡量科技股份有限公司 | A kind of automatic zero point track algorithm for inhibiting sensor zero to float |
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| CN111109947A (en) * | 2019-11-28 | 2020-05-08 | 上海追月科技有限公司 | Goods shelf, goods identification method and electronic equipment |
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| CN113701859A (en) * | 2021-08-26 | 2021-11-26 | 深圳诺博医疗科技有限公司 | Weighing counting method, device, system, computer equipment and readable storage medium |
| CN113701859B (en) * | 2021-08-26 | 2023-12-12 | 深圳诺博医疗科技有限公司 | Weighing counting method, device, system, computer equipment and readable storage medium |
| CN114397003A (en) * | 2021-12-27 | 2022-04-26 | 深圳市晨北科技有限公司 | Weighing calibration method, device, equipment and medium |
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Application publication date: 20180904 |