CN86108566A - The bearing calibration of measured value - Google Patents
The bearing calibration of measured value Download PDFInfo
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- CN86108566A CN86108566A CN 86108566 CN86108566A CN86108566A CN 86108566 A CN86108566 A CN 86108566A CN 86108566 CN86108566 CN 86108566 CN 86108566 A CN86108566 A CN 86108566A CN 86108566 A CN86108566 A CN 86108566A
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- pick
- unit
- range
- measured value
- microcomputer
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- 238000012937 correction Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000012360 testing method Methods 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 230000001915 proofreading effect Effects 0.000 description 4
- 238000004154 testing of material Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Abstract
In material test, the detection signal that draws from the pick-up unit of detection variable is amplified with amplifier, after the A/D conversion, by the bearing calibration of the calculation process of microcomputer in the hope of measured value, for this reason, in advance the range of the kind of pick-up unit and each pick-up unit is deposited in the microcomputer, simultaneously, the correction coefficient of each range of corresponding each pick-up unit is stored, when measuring, by microcomputer the kind of pick-up unit and the range of use are differentiated,, carried out the correction calculation of measured value again the correction coefficient of the signal times of pick-up unit output with storage.
Description
The present invention relates to utilize the pick-up unit of test load and displacement to carry out material test, and the data that obtain are carried out the employed measured value bearing calibration of timing.
For example, the load signal of exporting from the detectors of load (force cell) of Material Testing Machine is amplified with the load amplifier, carry out conversion, carry out calculation process, obtain load value with data processing equipment with the A/D transducer.And in general, above-mentioned load amplifier will be divided into several grades to load measurement multiplying power range to carry out suitable load measurement.
On such material is had a try machine, real load is added to force cell and carries out the load timing with the load amplifier, the such use shown in the 2nd figure proofreaied and correct with variable resistor 1 usually, only 1 once correction of proofreading and correct before doing on the range to measure.Then, be transformed on the range 2, even if be set on other the range, the magnification that also remains same is proofreaied and correct.Yet, in fact,, shown in the 3rd figure, variable resistor 1 all must be set so that adjust respectively to each range in order to compensate the intrinsic rectilinearity characteristic of force cell.This be because, on the family curve of the force cell shown in the 4th figure.For example,, use * 2 range, add * during 2 full-scale load gravity, output promptly becomes 49 * 2=98, in order to keep the rectilinearity of force cell, need to do+2 compensation with * 1 span calibration.
But the problem that exists during with above-mentioned bearing calibration is: the needs dress is proofreaied and correct the variable resistor of usefulness etc., makes circuit complicated, also causes correction accuracy to reduce simultaneously.And must change to for a load amplifier when using on a plurality of force cells, because the linear characteristic difference of each force cell, as mentioned above, proofread and correct with variable resistor, can't make all suitably being proofreaied and correct of each force cell with proofreading and correct.
The purpose of this invention is to provide a kind of like this measured value bearing calibration, that is to say, need not proofread and correct and carry out old-fashioned adjustment operation with variable resistor etc. correction accuracy is improved, even the while also can be to proofreading and correct with each measured measured value of pick-up unit when use has the pick-up unit of a plurality of force cells.
The present invention has adopted following formation in order to address the above problem.
Promptly, the feature of relevant measured value bearing calibration of the present invention is: detect variable quantity by pick-up unit and export a detection signal when material test, amplify with amplifier, after the A/D conversion, carry out calculation process, thereby obtain the bearing calibration of measured value with microcomputer.In advance the range of the kind of pick-up unit and each pick-up unit is deposited in the microcomputer, simultaneously, again the correction coefficient of each range of corresponding each pick-up unit is deposited in the microcomputer, when measuring, differentiate the kind of pick-up unit and the range of use by microcomputer, the correction coefficient that the output signal of pick-up unit be multiply by storage is carried out the calculating that measured value is proofreaied and correct then.
Even under the situation of using a plurality of pick-up units, also to store its correction coefficient respectively to each range of each pick-up unit, the correction coefficient that the detection signal that is recorded by pick-up unit be multiply by regulation is carried out calculation process again, therefore, need only the range of pointing out equipment therefor to microcomputer, can suitably proofread and correct each measured value.
Below, the situation when illustrating the present invention and being used for material test load and measuring.
The 1st figure is the correcting circuit block scheme of the Material Testing Machine of expression the present invention actual uses, divides from NO.1 to NO.n from force cell 5(and rotates use n time) load signal amplify by load amplifier 6, then import A/D transducer 7.Here, the load signal X of process A/D conversion is imported in the CPU8, carries out calculation process.The load value Xout that calculates in CPU8 is output to register 13, carries out record by register 13.
In the storer 10 of CPU8, store kind, the range of each force cell and the correction coefficient of corresponding range of the force cell of the NO.1～NO.n that uses, when asking load value Xout, correspondingly reading necessary correction coefficient.
Handling computing, is Jx if the A/D transformed value X of load signal is got correction coefficient, then calculates Xout by formula Xout=JxX.
The correction coefficient Jx here sets like this, and at the maximum sensitivity range of load amplifier 7, for example, on the X100, when adding to full-scale real load, make Xout is ull-scale value f.Beyond this range, if when the full-scale load of setting is added to force cell, then because the linear influence of force cell makes Xout represent f+ α.Promptly full scale has been produced error alpha.Therefore, the correction coefficient of this range is Jxf/(f+ α if make), then Xout just becomes ull-scale value f.
As the coefficient corresponding with this range, the range of each force cell deposits in respectively in the storer 10 the correction coefficient of trying to achieve like this.Table 1, the store status of the storer 10 among the expression embodiment.
Table 1
The coefficient memory that＜sensor NO.1 uses 〉
The coefficient memory that＜sensor NO.n uses 〉
In the storer 10 of CPU8, storing correction coefficient as mentioned above corresponding to each force cell, required correction coefficient will be read according to the instruction of indicating mechanism 11 and indicating mechanism 12.Indicating mechanism 11 is used to indicate the kind of force cell 5; Indicating mechanism 12 is used for indicating the range of detectors of load 6.Above-mentioned indicating mechanism 11 and 12 can adopt switch etc.
Like this, when carrying out material test, differentiate the kind and the range thereof of employed force cell, read necessary correction coefficient, each measuring load value is proofreaied and correct respectively with CPU8.
Above-mentioned embodiment has illustrated the output calibration method of load amplifier of the force cell of Material Testing Machine.Output calibration for relevant extensometer and elongation amplifier thereof also can carry out by the same manner.In addition, not only can proofread and correct in this way, and also can proofread and correct in this way various surveying instruments such as analytic engines to Material Testing Machine.
[effect of the present invention]
Can find out from above-mentioned explanation: the present invention must not carry out adjusting operation with the variable resistor of proofreading and correct usefulness etc. can carry out the correction of measured value, therefore can improve precision, even and passing through Conversion is used respectively in the situation of a plurality of checkout gears, also can carry out suitable accurate correction by the range of each amplifier respectively to each checkout gear.
The simple declaration of accompanying drawing
The 1st figure is a block diagram of representing device used in the embodiment of the present invention; The the 2nd to the 4th figure is the key diagram of existing bearing calibration.
5 ... force cell; 6 ... the load amplifier;
7 ... the A/D transducer; 8 ... processing unit among the CPU();
10 ... storer; 11 ... force cell kind indicating device;
12 ... range indicating mechanism
Claims (1)
- The present invention is the bearing calibration of measured value, it is characterized in that:In material test, the detection signal that draws from the pick-up unit of detection variable is amplified with amplifier, after the A/D conversion, by the bearing calibration of the calculation process of microcomputer in the hope of measured value, for this reason, in advance the range of the kind of pick-up unit and each pick-up unit is deposited in the microcomputer, simultaneously, the correction coefficient of each range of corresponding each pick-up unit is stored, when measuring, by microcomputer the kind of pick-up unit and the range of use are differentiated,, carried out the correction calculation of measured value again the correction coefficient of the signal times of pick-up unit output with storage.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP297922/85 | 1985-12-28 | ||
| JP60297922A JPH0795022B2 (en) | 1985-12-28 | 1985-12-28 | Material testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86108566A true CN86108566A (en) | 1988-05-18 |
Family
ID=17852825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86108566 Pending CN86108566A (en) | 1985-12-28 | 1986-12-27 | The bearing calibration of measured value |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0795022B2 (en) |
| CN (1) | CN86108566A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100125A (en) * | 2018-06-28 | 2018-12-28 | 中国直升机设计研究所 | A kind of rotating amplifier output signal modification method |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01137440U (en) * | 1988-03-16 | 1989-09-20 | ||
| JP3526767B2 (en) * | 1998-12-11 | 2004-05-17 | 日本たばこ産業株式会社 | Material testing machine |
| JP2008267936A (en) * | 2007-04-19 | 2008-11-06 | Shimadzu Corp | Material testing machine and data correction method |
| JP2008267935A (en) * | 2007-04-19 | 2008-11-06 | Shimadzu Corp | Material testing machine and calibration method |
| JP5098995B2 (en) * | 2008-12-19 | 2012-12-12 | 株式会社島津製作所 | Sensor characteristic correction device and material testing machine |
| CN102062668A (en) * | 2010-12-06 | 2011-05-18 | 中颖电子股份有限公司 | Pressure sensor system calibrating circuit and method |
| JP6202224B2 (en) * | 2014-12-05 | 2017-09-27 | 株式会社村田製作所 | Sensor module |
| CN110657833B (en) * | 2019-10-12 | 2023-02-10 | 湖南银河电气有限公司 | Novel calibration method for high-precision source meter integrated measuring equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5454661A (en) * | 1977-10-11 | 1979-05-01 | Shimadzu Corp | Method and apparatus for calibration of detection circuits |
-
1985
- 1985-12-28 JP JP60297922A patent/JPH0795022B2/en not_active Expired - Lifetime
-
1986
- 1986-12-27 CN CN 86108566 patent/CN86108566A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100125A (en) * | 2018-06-28 | 2018-12-28 | 中国直升机设计研究所 | A kind of rotating amplifier output signal modification method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62167432A (en) | 1987-07-23 |
| JPH0795022B2 (en) | 1995-10-11 |
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |