CN106768217A - A kind of strain gauge transducer temperature compensation - Google Patents
A kind of strain gauge transducer temperature compensation Download PDFInfo
- Publication number
- CN106768217A CN106768217A CN201611112316.5A CN201611112316A CN106768217A CN 106768217 A CN106768217 A CN 106768217A CN 201611112316 A CN201611112316 A CN 201611112316A CN 106768217 A CN106768217 A CN 106768217A
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- Prior art keywords
- compensation
- silk
- strain gauge
- temperature
- gauge transducer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
- G01G3/18—Temperature-compensating arrangements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a kind of strain gauge transducer temperature compensation, it is related to strain gauge transducer to manufacture field, comprises the following steps：S1, establishment or capture setting record label in the label on strain gauge transducer；S2, respectively collection four temperature-coefficient of electrical resistances of bridge arm of strain gauge transducer, determine bridge arm to be compensated, solve compensation filament length degree L, and will compensation filament length degree L and label corresponding record；S3, compensation silk automatic cutting apparatus gather the label of strain gauge transducer, cut out the compensation silk that length is L；S4, the bridge arm to be compensated shown according to compensation silk automatic cutting apparatus, compensation silk is series in bridge arm to be compensated.The present invention by with computer-reader form gather strain gauge transducer on label, and record it is corresponding compensation silk parameter, without manually being recorded, it is to avoid malfunction.The designated length of compensation silk is cut out by automatic cutting apparatus, is improved and is cut efficiency, and improve cutting precision.
Description
Technical field
The present invention relates to weighing sensor manufacture field, more particularly to a kind of strain gauge transducer temperature compensation.
Background technology
In weighing sensor field, due to foil gauge and elastomer temperature influence, and strain sheet resistance values are caused
Change, cause that weighing measurement is inaccurate, i.e., zero temperature drift is, it is necessary to carry out temperature-compensating.In general, temperature is mended
Repaying is measured and compensates when weighing sensor is without external load function, so weighing sensor temperature-compensating is also referred to as zero point
Temperature-compensating.Zero temperature compensation typically selects copper, nickel resistance and the larger material of cobalt-nickel alloy equitemperature coefficient, to ensure to mend
Repay precision
The compensation silk of prior art temperature-compensating is general to be measured and is cut using ruler, and cumbersome, intelligence degree is low,
And cutting accuracy is relatively low.
The content of the invention
In view of the drawbacks described above of prior art, the technical problems to be solved by the invention are to provide a kind of strain-type sensing
Device temperature compensation, it is intended to strain gauge transducer temperature-compensating efficiency.
To achieve the above object, the invention provides a kind of strain gauge transducer temperature compensation, comprise the following steps：
S1, establishment or capture setting record the mark in the label on strain gauge transducer with computer-reader form
Sign；
S2, four temperature-coefficient of electrical resistances of bridge arm of the strain gauge transducer are gathered respectively, determine bridge arm to be compensated, solve
Compensation filament length degree L, and by the compensation filament length degree L and the label corresponding record；
S3, compensation silk automatic cutting apparatus gather the label of the strain gauge transducer, cut out the benefit that length is L
Repay silk；
S4, the bridge arm described to be compensated shown according to the compensation silk automatic cutting apparatus, the compensation silk is series at
In the bridge arm to be compensated.
In the technical scheme, by with computer-reader form gather strain gauge transducer on label, and record with
Corresponding compensation silk parameter, without manually being recorded, it is to avoid malfunction.Compensation silk is cut out by automatic cutting apparatus
Designated length, improves and cuts efficiency, and improve cutting precision.Automatic cutting apparatus also show bridge arm to be compensated, instruct operation
Personnel are connected in series to specified bridge arm by silk is compensated, it is to avoid error.
Furthermore, in the step S1, the form of the label includes bar code, Quick Response Code, RFID.
In the technical scheme, row label storage or matching label are entered in temperature-compensating detection operation, and it is right cutting
When answering the compensation silk of strain gauge transducer, label is also detected, and cuts out suitable length and used for operating personnel.In the technology
In scheme, bar code, Quick Response Code, RFID can be used, improve tag identification speed.
Furthermore, the step S2 includes：
S21, respectively by four bridge arms connect resistance measuring module, the strain gauge transducer is positioned over baking oven
In；
Temperature and four arm resistance values in baking oven described in S22, Real-time Collection；
S23, the temperature coefficient k for solving four bridge armsiIf the temperature coefficient undulating value E >=α performs step
S24；Otherwise described compensation filament length degree L=0, the strain gauge transducer need not carry out temperature-compensating；Wherein, the i is just whole
Number, the i meets 1≤i≤4；It is describedThe α meets 0 ＜ α≤0.1；
The minimum bridge arm of S24, selection temperature coefficient is used as treating temperature-compensating bridge arm, the compensation filament length degree
S25, by the compensation filament length degree L and the label corresponding record；
The r0It is compensation silk resistance per unit length；kjIt is the temperature coefficient of the bridge arm to be compensated, RjFor described to be compensated
The normal temperature resistance value of bridge arm, kbcIt is the temperature coefficient of the compensation silk, RbcIt is the normal temperature resistance value of the compensation silk, kj' it is benefit
Repay the temperature coefficient of the rear bridge arm to be compensated；Temperature coefficient after compensation meets：
In the technical scheme, the flow that temperature-compensating detects operation is disclosed, in the flow, by varying temperature environment
Four temperatures coefficient of bridge arm of middle detection, judge degree of fluctuation, and generate compensation filament length degree.Compensation filament length degree passes through formulaThe calculating speed of effective L.
Furthermore, the compensation silk automatic cutting apparatus include：Frame, be installed in the frame and longitudinal direction arrangement
Clamping device and Scissoring device, be installed on above the clamping device and Scissoring device straight line module, be installed on it is described straight
Stretching clamp, tag scanner, memory and controller below the plummer of line module, the stretching clamp are used to grip
With stretch compensation silk；
The first input end of the controller is connected with the output end of the tag scanner, and the second of the controller is defeated
Go out end to be connected with the input of the clamping device, the 3rd output end of the controller connects with the input of the Scissoring device
Connect, the 4th output end of the controller is connected with the input of the stretching clamp, the output end of the controller the 5th and institute
The input connection of straight line module is stated, the memory is bi-directionally connected with the controller；
The step S3 includes：
S31, controller obtain the workpiece label of the tag scanner collection, and extract the corresponding compensation of the label
Filament length degree L；
The stretching clamp on S32, the control straight line module is moved to compensation silk gripping area, and grips the compensation
Silk；
S33, the clamping device and Scissoring device discharge the compensation silk, control the straight line module to enter row distance for L
Movement；
Silk is compensated described in S34, the gripping means grips, the Scissoring device cuts the compensation silk；
S35, the stretching clamp discharge the compensation silk.
In the technical scheme, the automatic cutting method of compensation silk is given, the method effectively improves cutting efficiency, it is to avoid
Error is cut, cost of labor is reduced.In the technical scheme, when cutting, clamping device is also clamped, and keeps compensation silk steady
It is fixed, improve and cut precision.In the technical scheme, using straight line module, it is ensured that compensation silk is in linear stretch state, by straight
The displacement of line module ensures the cutting length of compensation silk, improves and cuts precision.
Furthermore, the compensation silk automatic cutting apparatus include several described tag scanners, the step S3,
Also include extracting the ID of the tag scanner, after the compensation silk is cropped, be transported to correspondence ID's by the stretching clamp
The opposite position of the tag scanner.
In the technical scheme, a compensation silk automatic cutting apparatus correspondence multiple operating personnel, as some operator
The new strain gauge transducer of member's scanning, compensation silk automatic cutting apparatus just extract the cutting length of corresponding label, and are cut,
It is last that silk gripping to the workbench of the operating personnel will be compensated by straight line module again.The technical scheme, effectively increases compensation
The utilization ratio of silk automatic cutting apparatus, it is to avoid equipment is idle；Meanwhile, compensation silk is produced with a roll, improves compensation silk profit
With rate；Additionally, also saving cost of labor.
The beneficial effects of the invention are as follows：The present invention is by with the mark on computer-reader form collection strain gauge transducer
Sign, and record corresponding compensation silk parameter, without manually being recorded, it is to avoid error.Cut out by automatic cutting apparatus
The designated length of compensation silk is cut, is improved and is cut efficiency, and improve cutting precision.Automatic cutting apparatus also show bridge to be compensated
Arm, instructs operating personnel to be connected in series to specified bridge arm by silk is compensated, it is to avoid error.
Brief description of the drawings
Fig. 1 is a kind of schematic flow sheet of the strain gauge transducer temperature compensation in an embodiment；
Fig. 2 is the temperature-compensation circuit schematic diagram in an embodiment；
Fig. 3 is the structural representation of the temperature compensation operation platform in an embodiment；
Fig. 4 is the structural representation of the compensation silk automatic cutting apparatus in an embodiment；
Fig. 5 is the detailed structure schematic diagram of the compensation silk automatic cutting apparatus in an embodiment；
Fig. 6 is the partial top view of the compensation silk automatic cutting apparatus in an embodiment；
Fig. 7 is the circuit controller chassis of the compensation silk automatic cutting apparatus in an embodiment；
Fig. 8 is the structural representation of the temperature compensation operation platform in another embodiment.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples：
As shown in figs. 1-7, in the first embodiment of the invention, there is provided a kind of strain gauge transducer temperature compensation, wrap
Include following steps：
S1, establishment or capture setting record the mark in the label on strain gauge transducer with computer-reader form
Sign；
S2, four temperature-coefficient of electrical resistances of bridge arm of the strain gauge transducer are gathered respectively, determine bridge arm to be compensated, solve
The compensation length L of silk 100, and by the compensation length L of silk 100 and the label corresponding record；
S3, compensation silk automatic cutting apparatus 200 gather the label of the strain gauge transducer, and it is the institute of L to cut out length
State compensation silk 100；
S4, the bridge arm described to be compensated according to the compensation silk automatic cutting apparatus 200 display, by the compensation silk 100
It is series in the bridge arm to be compensated.
In the present embodiment, be by weld will compensation silk 100 be connected in bridge arm to be compensated.
In the present invention, the form of the label of step S1 includes bar code, Quick Response Code, RFID.In the present embodiment, preferably
Using bar code.
In the present embodiment, the step S2 includes：
S21, respectively by four bridge arms connect resistance measuring module, the strain gauge transducer is positioned over baking oven
In；
Temperature and four arm resistance values in baking oven described in S22, Real-time Collection；
S23, the temperature coefficient k for solving four bridge armsiIf the temperature coefficient undulating value E >=α performs step
S24；The otherwise described compensation length L=0 of silk 100, the strain gauge transducer need not carry out temperature-compensating；Wherein, the i is for just
Integer, the i meets 1≤i≤4；It is describedThe α meets 0 ＜ α≤0.1；
The minimum bridge arm of S24, selection temperature coefficient is used as treating temperature-compensating bridge arm, 100 length of the compensation silk
S25, by the compensation length L of silk 100 and the label corresponding record；
The r0It is the compensation resistance per unit length of silk 100；kjIt is the temperature coefficient of the bridge arm to be compensated, RjTreated for described
Compensate the normal temperature resistance value of bridge arm, kbcIt is the temperature coefficient of the compensation silk 100, RbcIt is the normal temperature resistance of the compensation silk 100
Value, kj' it is the temperature coefficient of the bridge arm to be compensated after compensation；Temperature coefficient after compensation meets：
Here the derivation of equation is briefly described.
Can be obtained by R '=Rk Δs T：kjRj+kbcRbc=kj'(Rj+Rbc)；
Wherein, R is the resistance value of material under normal temperature, and R ' is the material resistance value under high temperature, and k is the temperature coefficient of material,
Δ T is the temperature difference.
Further deriving to obtain：
It is noted thatkj' it is the average of removing remaining three bridge arms of bridge arm to be compensated
Temperature coefficient.
In the present embodiment, the compensation silk automatic cutting apparatus 200 include：Frame 201, it is installed on the frame 201
The clamping device 202 and Scissoring device 203 of upper and longitudinal direction arrangement, it is installed on the clamping device 202 and the top of Scissoring device 203
Straight line module 204, be installed on below the plummer of the straight line module 204 stretching clamp 205, tag scanner 206, deposit
Reservoir 301 and controller 300, the stretching clamp 205 are used to grip and stretch compensation silk 100；
The first input end of the controller 300 is connected with the output end of the tag scanner 206, the controller
300 the second output end is connected with the input of the clamping device 202, the 3rd output end of the controller 300 with it is described
The input connection of Scissoring device 203, the 4th output end of the controller 300 connects with the input of the stretching clamp 205
Connect, the output end of the controller 300 the 5th is connected with the input of the straight line module 204, the memory 301 and the control
Device processed 300 is bi-directionally connected；
The step S3 includes：
S31, controller 300 obtain the workpiece label of the collection of the tag scanner 206, and extract the label correspondence
Compensation silk 100 length L；
The stretching clamp 205 on S32, the control straight line module 204 is moved to the compensation gripping of silk 100 area, and presss from both sides
Take the compensation silk 100；
S33, the clamping device 202 and Scissoring device 203 discharge the compensation silk 100, control the straight line module 204
Enter the movement that row distance is L；
S34, the clamping device 202 clamp the compensation silk 100, and the Scissoring device 203 cuts the compensation silk
100；
S35, the stretching clamp 205 discharge the compensation silk 100.
Compensation silk automatic cutting apparatus 200 of the invention can be one cutting equipment of a people, or many people one
Cutting equipment, is one cutting equipment of a people in the first embodiment of the invention.As shown in Figure 8, it is preferable that in the present invention the
In two embodiments, one cutting equipment of many people, the compensation silk automatic cutting apparatus 200 include several described tag scanners
206, the step S3, also including the ID of the extraction tag scanner 206, after the compensation silk 100 is cropped, by the drawing
Stretch the opposite position that fixture 205 is transported to the tag scanner 206 of correspondence ID.
It is noted that causing the combined influence of the various factors of zero temperature drift, electric bridge four can be regarded as
The temperature-coefficient of electrical resistance of individual arm resistance strain gauge is inconsistent to be caused.If the temperature-coefficient of electrical resistance of four electric bridge bridge arms is consistent
Or it is close, it is possible to eliminate or reduce zero temperature drift to greatest extent.According to this principle, in first having to find out electric bridge
The small bridge arm of temperature-coefficient of electrical resistance, and the big zero temperature compensation resistance R of a temperature-coefficient of electrical resistance that connects thereonbc, to carry
The total temperature-coefficient of electrical resistance of this bridge arm high；Its secondary suitable zero temperature compensation resistance R of selection resistance valuebc, make four bridges
The temperature-coefficient of electrical resistance of arm is consistent or close, it is possible to offset the influence of null offset, reaches the purpose of zero temperature compensation.
Drift compensating circuit theory diagrams are as shown in Figure 2.
Additionally, in the present invention, clamping device 202, Scissoring device 203, stretching clamp 205 are by air cylinder driven.
Additionally, in the first embodiment, compensation silk conveying limited post 207 and compensation silk conveying spacing hole 208 are additionally provided with,
For avoiding compensation silk 100 from being bent in course of conveying, influence cuts precision.
Preferred embodiment of the invention described in detail above.It should be appreciated that one of ordinary skill in the art without
Need creative work just can make many modifications and variations with design of the invention.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (5)
1. a kind of strain gauge transducer temperature compensation, it is characterised in that comprise the following steps：
S1, establishment or capture setting record the label in the label on strain gauge transducer with computer-reader form；
S2, four temperature-coefficient of electrical resistances of bridge arm of the strain gauge transducer are gathered respectively, determine bridge arm to be compensated, solve compensation
Filament length degree L, and by the compensation filament length degree L and the label corresponding record；
S3, compensation silk automatic cutting apparatus gather the label of the strain gauge transducer, cut out the compensation that length is L
Silk；
S4, the bridge arm described to be compensated shown according to the compensation silk automatic cutting apparatus, the compensation silk are series at described
In bridge arm to be compensated.
2. a kind of strain gauge transducer temperature compensation as claimed in claim 1, it is characterised in that：In the step S1
In, the form of the label includes bar code, Quick Response Code, RFID.
3. a kind of strain gauge transducer temperature compensation as claimed in claim 1, it is characterised in that the step S2 bags
Include：
S21, respectively by four bridge arms connect resistance measuring module, the strain gauge transducer is positioned in baking oven；
Temperature and four arm resistance values in baking oven described in S22, Real-time Collection；
S23, the temperature coefficient k for solving four bridge armsiIf the temperature coefficient undulating value E >=α performs step S24；It is no
The then compensation filament length degree L=0, the strain gauge transducer need not carry out temperature-compensating；Wherein, the i is positive integer, described
I meets 1≤i≤4；It is describedThe α meets 0 ＜ α≤0.1；
The minimum bridge arm of S24, selection temperature coefficient is used as treating temperature-compensating bridge arm, the compensation filament length degree
S25, by the compensation filament length degree L and the label corresponding record；
The r0It is compensation silk resistance per unit length；kjIt is the temperature coefficient of the bridge arm to be compensated, RjIt is the bridge arm to be compensated
Normal temperature resistance value, kbcIt is the temperature coefficient of the compensation silk, RbcIt is the normal temperature resistance value of the compensation silk, kj' it is after compensating
The temperature coefficient of the bridge arm to be compensated；Temperature coefficient after compensation meets：
4. a kind of strain gauge transducer temperature compensation as claimed in claim 1, it is characterised in that the compensation silk is automatic
Cutting equipment includes：Frame, it is installed in the frame and the clamping device of longitudinal direction arrangement and Scissoring device, is installed on the folder
Straight line module above tight device and Scissoring device, stretching clamp, the label being installed on below the plummer of the straight line module
Scanner, memory and controller, the stretching clamp are used to grip and stretch compensation silk；
The first input end of the controller is connected with the output end of the tag scanner, the second output end of the controller
Input with the clamping device is connected, and the 3rd output end of the controller is connected with the input of the Scissoring device,
4th output end of the controller is connected with the input of the stretching clamp, and the output end of the controller the 5th is straight with described
The input connection of line module, the memory is bi-directionally connected with the controller；
The step S3 includes：
S31, controller obtain the workpiece label of the tag scanner collection, and extract the corresponding compensation filament length of the label
Degree L；
The stretching clamp on S32, the control straight line module is moved to compensation silk gripping area, and grips the compensation silk；
S33, the clamping device and Scissoring device discharge the compensation silk, control the straight line module to enter the shifting that row distance is L
It is dynamic；
Silk is compensated described in S34, the gripping means grips, the Scissoring device cuts the compensation silk；
S35, the stretching clamp discharge the compensation silk.
5. a kind of strain gauge transducer temperature compensation as claimed in claim 4, it is characterised in that：The compensation silk is automatic
Cutting equipment includes several described tag scanners, and the step S3 is described also including the ID of the extraction tag scanner
After compensation silk is cropped, the opposite position of the tag scanner of correspondence ID is transported to by the stretching clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611112316.5A CN106768217B (en) | 2016-12-07 | 2016-12-07 | A kind of strain gauge transducer temperature-compensation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611112316.5A CN106768217B (en) | 2016-12-07 | 2016-12-07 | A kind of strain gauge transducer temperature-compensation method |
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|---|---|
| CN106768217A true CN106768217A (en) | 2017-05-31 |
| CN106768217B CN106768217B (en) | 2019-02-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108051049A (en) * | 2017-12-12 | 2018-05-18 | 广东天际电器股份有限公司 | Weight acquisition methods and device, heating means and equipment |
| CN111811709A (en) * | 2020-07-16 | 2020-10-23 | 内蒙古第一机械集团股份有限公司 | Four-column torque sensor |
| CN112556900A (en) * | 2019-09-26 | 2021-03-26 | 浙江国检检测技术股份有限公司 | Digital intelligent bolt and pretightening force detection method thereof |
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| CN108051049B (en) * | 2017-12-12 | 2020-12-01 | 广东天际电器股份有限公司 | Weight acquisition method and device, heating method and equipment |
| CN112556900A (en) * | 2019-09-26 | 2021-03-26 | 浙江国检检测技术股份有限公司 | Digital intelligent bolt and pretightening force detection method thereof |
| CN111811709A (en) * | 2020-07-16 | 2020-10-23 | 内蒙古第一机械集团股份有限公司 | Four-column torque sensor |
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| CN106768217B (en) | 2019-02-19 |
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