CN105823411A - Curved surface profile measurement method - Google Patents
Curved surface profile measurement method Download PDFInfo
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- CN105823411A CN105823411A CN201610154361.0A CN201610154361A CN105823411A CN 105823411 A CN105823411 A CN 105823411A CN 201610154361 A CN201610154361 A CN 201610154361A CN 105823411 A CN105823411 A CN 105823411A
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- 238000000691 measurement method Methods 0.000 title claims abstract description 10
- 230000005684 electric field Effects 0.000 claims abstract description 116
- 239000011159 matrix material Substances 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims description 9
- 230000004913 activation Effects 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 7
- 239000004020 conductor Substances 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 241001269238 Data Species 0.000 claims description 3
- 238000009954 braiding Methods 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000004441 surface measurement Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 7
- 238000011161 development Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/28—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring contours or curvatures
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention discloses a curved surface profile measurement method. A matrix circuit is attached to a to-be-measured curved surface, and through detecting a distance value between two adjacent electric field channels in the matrix circuit, position data of each electric field channel are restored; the driving position of the matrix circuit is changed at least once along a direction vertical with the surface of the to-be-measured curved surface, and position data of multiple groups of electric field channels are acquired; and according to the position data of multiple groups of electric field channels, the position state of each electric field channel is judged, and the shape of the to-be-measured curved surface is restored. Compared with the traditional curved surface measurement method, the method of the invention has the advantages of fast measurement speed, high measurement precision, low production cost and the like.
Description
Technical field
The present invention relates to a kind of curved surface profile measurement technology, especially relate to one curved surface profile measurement method fast, accurately.
Background technology
Over half a century is gone through in the development of three coordinate measuring machine, and its appearance is the historical inevitability of industrialization development.On the one hand it is that to need the measurement equipment of fast and reliable matched due to the development of the high efficiency such as automatic machine tool, Digit Control Machine Tool processing and the processing of more and more complicated shape part；On the other hand it is owing to the development of electronic technology, computer technology, Numeric Control Technology and precision processing technology is provided for technical foundation.The appearance of three coordinate measuring machine makes measuring instrument be transformed into possibility from manual mode to what modernization was measured automatically.
Being to compare unlike measurement by measured and mechanical references from traditional measurement instrument, the measurement of coordinate measuring machine is actually based on collection and the calculating of spatial point coordinate.Although the measuring machine in modern times is more senior much than function in early days, but ultimate principle is identical, i.e. builds the structure of a rigidity, and this structure has three mutually perpendicular axles, each axially mounted grating scale, and is respectively defined as X, Y, Z axis.In order to each axle can be moved, each axially equipped with air bearing or mechanical bearing.The position of some any instant measured in detection system record on the vertical axis.Detection system is usually and is made up of gauge head and contact type probe, probe and the surface gentle touchdown of measured workpiece, it is thus achieved that measure the coordinate of point.During measuring, the measurement of the various geometric elements of workpiece is converted on these geometric elements coordinate position a little by coordinate measuring machine, then is calculated the parameters such as the size of these geometric elements, shape, relative position according to the mathematical model of corresponding geometry by software.
From above-mentioned introduction, the existing measurement to curved surface size, shape etc. depends on three coordinate measuring machine and completes, it is understood that the complicated structure of existing three coordinate measuring machine, production cost is higher, and realize owing to its calculating process depends on software tool, therefore, measuring speed and efficiency also have the biggest room for promotion.It is therefore desirable to study a kind of novel curved surface profile dimensional measurement mode, improve the problems such as the structure that prior art exists is complicated, cost high, measuring speed is slow.
Summary of the invention
It is an object of the invention to overcome the defect of prior art, a kind of curved surface profile measurement method is provided, based on flexible matrix circuit, and by changing the activation point of matrix circuit on curved surface, gather the position data of electric field channel on abundant circuit, to measure curved surface profile size quickly and accurately.
For achieving the above object, the present invention proposes following technical scheme: a kind of curved surface profile measurement method, comprises the following steps:
Matrix circuit is attached on curved surface to be measured, by distance value between adjacent two electric field channel on detecting matrix circuit, reduces the position data of each electric field channel；
Change the activation point of described matrix circuit at least one times along the surface direction being perpendicular to described curved surface to be measured, collect the position data organizing electric field channel more；
According to the described position datas organizing electric field channel, it is judged that the location status of each electric field channel, and reduce the shape of curved surface to be measured more.
Preferably, when being attached on curved surface to be measured by matrix circuit, keep electric field channel parallel with curved surface to be measured.
Preferably, according to the position data of the many groups electric field channel obtained, describe curved surface radian Changing Pattern to be measured with function y=f (x) form, and by Fourier transformation, reduce the track of described function, the shape of the most reducible curved surface to be measured.
Preferably, often change and drive the position of electric field channel in the most described matrix circuit, obtain the position data of one group of electric field channel, often organize the position data of electric field channel again by distance value reduction between adjacent two electric field channel on detecting matrix circuit.
Preferably, on described matrix circuit, between adjacent two electric field channel, the calculating process of distance value includes:
According to the coordinate of initial electric field channel, in conjunction with capacity based distance measuring principle, it is calculated the distance value between adjacent two electric field channel successively.
Preferably, the computing formula that described capacity based distance measuring principle is used is: C=ε S/d, and wherein, C represents electric field channel electric capacity, and ε is dielectric constant, and S is the field area formed between adjacent two electric field channel, and d is the distance between adjacent two electric field channel.
Preferably, the described location status judging each electric field channel includes: judge each electric field channel the most at grade.
Preferably, if △ is d1=△ d2=0, then judge that adjacent three electric field channel are in approximately the same plane；If △ d1 ≠ 0 and/or △ d2 ≠ 0, then judge that adjacent three electric field channel are not in approximately the same plane, wherein △ d1=D1-D, △ d2=D2-D, △ d1, △ d2 are the distance changing value between the most adjacent two piece passage of adjacent three passages, D1, D2 represent the air line distance between adjacent two electric field channel, and D represents the base material distance between adjacent two electric field channel.
Preferably, the location status of each electric field channel of described judgement also includes: according to the air line distance between multiple electric field channel, it is judged that the arrangement trend direction of electric field channel.
Preferably, described matrix circuit includes flexible parent metal and the many electric field channel being evenly distributed in flexible parent metal.
Preferably, every electric field channel is by complex root flexible protective body and at least conductor composition, and described conductor is evenly spaced in flexible protective body in the way of braiding.
The invention has the beneficial effects as follows:
1, the present invention is based on sensing circuit, by the way of electric field induction, the position data of electric field channel in Acquisition Circuit, and by changing the activation point of sensing circuit on curved surface, collect abundant data, it is thus possible to be more accurately obtained the real contours profiles of curved surface.
2, the present invention compares traditional measurement of curved surface mode, has the advantages such as measuring speed is fast, certainty of measurement is high, production cost is low.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of curved surface profile measurement method of the present invention；
Fig. 2 is the structural representation of matrix circuit of the present invention；
Fig. 3 is the structural representation of embodiment of the present invention arch object；
Fig. 4 is embodiment of the present invention electric field circuit principle schematic on arch object；
Fig. 5 is that the present invention judges each electric field channel principle schematic the most at grade；
Fig. 6 is the principle schematic that the present invention judges the arrangement trend direction of electric field channel.
Reference:
1, flexible parent metal, 2, electric field channel.
Detailed description of the invention
Below in conjunction with the accompanying drawing of the present invention, the technical scheme of the embodiment of the present invention is carried out clear, complete description.
A kind of disclosed curved surface profile measurement method, based on flexible matrix circuit, the circuit path on drive circuit successively, and obtain the position data of circuit path by the way of electric field induction, truly reduces curve form according to these data.
Describing the principle of curved surface profile measurement of the present invention below as a example by measuring arch Irregular Boundary Surface in detail, certainly, the invention is not restricted to measure arched surface, other erose curved surface present invention are equally applicable.
As it is shown in figure 1, a kind of curved surface profile measurement method disclosed in the embodiment of the present invention, comprise the following steps:
Step 1, is attached to matrix circuit on curved surface to be measured, by distance value between adjacent two electric field channel on detecting matrix circuit, reduces the position data of each electric field channel.
As shown in Figure 2; matrix circuit in the present embodiment includes flexible parent metal 1 and the many electric field channel 2 being distributed in flexible parent metal; and the electric field channel in base material be evenly distributed, spacing is equal, material is unified, size is the same; wherein; every electric field channel is by complex root flexible protective body and at least conductor composition; conductor is evenly spaced in flexible protective body in the way of braiding, it is preferable that every electric field channel in the present embodiment is all in compression shape.Therefore the matrix circuit entirety in the present embodiment is flexible, stretchable, can be attached on erose curved surface.
Specifically, before matrix circuit is attached on curved surface to be measured, electric field channel (C1 on drive circuit successively, C2 ... Cn), distance D1 between adjacent two electric field channel (C12, C23 ... Cn-1Cn), D2 is obtained ... Dn-1, now by the way of electromagnetic induction, distance between adjacent two electric field channel should be equal, i.e. D1=D2 ...=Dn-1=D.Wherein, n is the integer more than 2.Certainly, when being embodied as, the most not necessarily limit the distance taking adjacent two electric field channel, it is also possible to take adjacent three (i.e. channel C 1 and C3, channel C 4 and C6 ... the distance between channel C n-2 and Cn) or the distance between other number root passages that is connected.
By seamless applying for the flexible parent metal of matrix circuit in arc surface, the shape of arch object as indicated at 3, keeps electric field channel parallel with parallel arched surface, and now, flexible parent metal only has deformation, not stretching.Now, according to the coordinate of initial electric field channel, in conjunction with capacity based distance measuring principle, it is calculated distance value D1, the D2 between adjacent two electric field channel successively ... Dn-1, further according to these distance values, reduces the position data of each electric field channel.Specifically, the computing formula that capacity based distance measuring principle uses is: C=ε S/d, and wherein, C represents electric field channel electric capacity, and ε is dielectric constant, and S is the field area formed between adjacent two electric field channel, and d is the distance between adjacent two electric field channel.I.e. according to the coordinate (X1, Y1) of electric field channel C1, available distance D12 between channel C 1 and channel C 2, according to this distance value, can get the coordinate of electric field channel C2, the like, finally can obtain the position data of all electric field channel.As electric field channel C1, C2 ... Cn is in unified plane, object under test surfacing, i.e. C2 coordinate is (X1+D, Y1), C3 coordinate is (X1+2D, Y1), object under test length surface is N*D, individually C1C3 passage is carried out electric field sensing, show that D13 distance is for 2D distance.
It addition, by the distance value between electric field channel, can determine whether the situation of electric field channel place body surface.As a example by electric field channel C1 in Fig. 4, C2, C3, when these three passage is at the position one of body surface, there is D1=D2=D, illustrate that electric field channel C1, C2, C3 are in same plane, and object under test surfacing；And these three passage at the position two of body surface time, now have D1 ＜ D, D2 ＜ D, now illustrate at channel C 1 to C2, at channel C 2 to C3, there occurs bending.
Step 2, changes the activation point of matrix circuit at least one times along the surface direction being perpendicular to curved surface to be measured, collects the position data organizing electric field channel more.
The data gathered in view of step 1 are limited, can't infinitely press close to the exact shape data of object under test, therefore, the present invention by change along the surface direction being perpendicular to curved surface to be measured the activation point of matrix circuit at least one times by the way of, gather abundant data.Often change the activation point of a matrix circuit, on circuit, the position data of corresponding electric field channel i.e. can change, now need also exist for the coordinate by initial electric field channel, in conjunction with capacity based distance measuring principle, it is calculated the distance value between adjacent two electric field channel successively, restores the position data obtaining each electric field channel.Concrete calculating process repeats no more here, can refer to the specific descriptions in step 1.
Step 3, according to the position datas organizing electric field channel, it is judged that the location status of each electric field channel, and reduces the shape of curved surface to be measured more.
Specifically, by in the matrix circuit position of electric field channel is varied multiple times, can be obtained by organizing the position data of electric field channel more, according to these data, the present invention describes curved surface radian Changing Pattern to be measured with function y=f (x) form, and with Fourier transformation, the most antiderivative track, thus obtain the true profile of arcuate surface to be measured.
Further, by the activation point of matrix circuit is varied multiple times, it is also possible to judge the location status of each electric field channel, such as each electric field channel the most at grade.Because each electric field channel C1, C2 ... the relative position of Cn typically have two kinds may, one is to rise along longitudinally (can be understood as Y direction), and another kind be exactly along longitudinal decline.
Specifically, it is judged that each electric field channel condition the most at grade is: if △ is d1=△ d2=0, then judge that adjacent three electric field channel are in approximately the same plane；If △ d1 ≠ 0 and/or △ d2 ≠ 0, then judge that adjacent three electric field channel are not in approximately the same plane, wherein △ d1=D1-D, △ d2=D2-D, △ d1, △ d2 are the distance changing value between the most adjacent two piece passage of adjacent three passages, D1, D2 represent the air line distance between adjacent two electric field channel, and D represents the base material distance between adjacent two electric field channel.Shown in Fig. 5, between channel C 1 in figure, channel C 2 and C3, △ d1=D1-D ＜ 0 and △ d2=D2-D ＜ 0, then judge channel C 1, channel C 2 and C3 the most at grade, between channel C n-2, channel C n-1, channel C n, △ dn-2=Dn-2-D=0, △ dn-1=Dn-1-D=0, then judge channel C n-2, channel C n-1, channel C n at grade.
Further, by the matrix circuit position of electric field channel is varied multiple times, and according to the air line distance between multiple electric field channel, also can determine whether the arrangement trend direction of electric field channel, be upwards or downtrend along Y direction in this way.Specifically, as shown in Figure 6, as a example by four electric field channel C0, C1, C2 and C3 adjacent in scheming, trend direction such as channel C 2 to be judged to channel C 3, with initial channel C 0 as judgement basis, assume that channel C 2 is uptrend to channel C 3, then measure that to obtain channel C 3 to the air line distance of channel C 0 be L；Assume that channel C 2 is downtrend to channel C 3, then measure that to obtain channel C 3 ' to the air line distance of channel C 0 be L ', because there being distance value L ' certainly more than distance value L, so the size of the air line distance obtained by measurement judges the channel C 2 trend direction to channel C 3: if it is relatively big to measure the air line distance value obtained, be then downtrend；Otherwise, then it is uptrending.
The technology contents of the present invention and technical characteristic have revealed that as above; but those of ordinary skill in the art are still potentially based on teachings of the present invention and announcement and make all replacements without departing substantially from spirit of the present invention and modification; therefore; scope should be not limited to the content disclosed in embodiment; and the various replacement without departing substantially from the present invention and modification should be included, and contained by present patent application claim.
Claims (10)
1. a curved surface profile measurement method, it is characterised in that comprise the following steps:
Matrix circuit is attached on curved surface to be measured, by distance value between adjacent two electric field channel on detecting matrix circuit, reduces the position data of each electric field channel；
Change the activation point of described matrix circuit at least one times along the surface direction being perpendicular to described curved surface to be measured, collect the position data organizing electric field channel more；
According to the described position datas organizing electric field channel, it is judged that the location status of each electric field channel, and reduce the shape of curved surface to be measured more.
Measuring method the most according to claim 1, it is characterised in that when being attached on curved surface to be measured by matrix circuit, keeps electric field channel parallel with curved surface to be measured.
Measuring method the most according to claim 1, it is characterized in that, position data according to the many groups electric field channel obtained, with function y=f (x) form, curved surface radian Changing Pattern to be measured is described, and by Fourier transformation, reduce the track of described function, the shape of the most reducible curved surface to be measured.
Measuring method the most according to claim 1, it is characterized in that, often change and drive the position of electric field channel in the most described matrix circuit, obtain the position data of one group of electric field channel, often organize the position data of electric field channel again by distance value reduction between adjacent two electric field channel on detecting matrix circuit.
5. according to the measuring method described in claim 1 or 4, it is characterised in that on described matrix circuit, between adjacent two electric field channel, the calculating process of distance value includes:
According to the coordinate of initial electric field channel, in conjunction with capacity based distance measuring principle, it is calculated the distance value between adjacent two electric field channel successively.
Measuring method the most according to claim 5, it is characterized in that, the computing formula that described capacity based distance measuring principle is used is: C=ε S/d, wherein, C represents electric field channel electric capacity, ε is dielectric constant, and S is the field area formed between adjacent two electric field channel, and d is the distance between adjacent two electric field channel.
Measuring method the most according to claim 1, it is characterised in that the described location status judging each electric field channel includes: judge each electric field channel the most at grade.
Measuring method the most according to claim 7, it is characterised in that if Δ d1=Δ d2=0, then judge that adjacent three electric field channel are in approximately the same plane；If Δ d1 ≠ 0 and/or Δ d2 ≠ 0, then judge that adjacent three electric field channel are not in approximately the same plane, wherein Δ d1=D1-D, Δ d2=D2-D, Δ d1, Δ d2 are the distance changing value between the most adjacent two piece passage of adjacent three passages, D1, D2 represent the air line distance between adjacent two electric field channel, and D represents the base material distance between adjacent two electric field channel.
Measuring method the most according to claim 7, it is characterised in that the location status of each electric field channel of described judgement also includes: according to the air line distance between multiple electric field channel, it is judged that the arrangement trend direction of electric field channel.
Measuring method the most according to claim 1; it is characterized in that; described matrix circuit includes flexible parent metal and the many electric field channel being evenly distributed in flexible parent metal; every electric field channel is by complex root flexible protective body and at least conductor composition, and described conductor is evenly spaced in flexible protective body in the way of braiding.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610154361.0A CN105823411B (en) | 2016-03-18 | 2016-03-18 | A kind of curved surface profile measurement method |
| US15/458,076 US10408599B2 (en) | 2016-03-18 | 2017-03-14 | Sensing circuit, processing method of sensing circuit and curved surface profile measuring method thereof |
| JP2017052837A JP2017201507A (en) | 2016-03-18 | 2017-03-17 | Sensing circuit, method for processing sensing circuit, and method for measuring curved surface profile |
| JP2018005043U JP3221212U (en) | 2016-03-18 | 2018-12-26 | Sensing circuit, processing method of sensing circuit and curved surface contour measuring method |
| US16/257,072 US10948280B2 (en) | 2016-03-18 | 2019-01-25 | Sensing circuit, processing method of sensing circuit and curved surface profile measuring method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610154361.0A CN105823411B (en) | 2016-03-18 | 2016-03-18 | A kind of curved surface profile measurement method |
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| CN105823411A true CN105823411A (en) | 2016-08-03 |
| CN105823411B CN105823411B (en) | 2019-02-22 |
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| CN201610154361.0A Active CN105823411B (en) | 2016-03-18 | 2016-03-18 | A kind of curved surface profile measurement method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108195336A (en) * | 2017-12-26 | 2018-06-22 | 深圳市宇恒互动科技开发有限公司 | Method for sensing, the apparatus and system of object dimensional shape |
| CN109690237A (en) * | 2016-09-08 | 2019-04-26 | 赛峰飞机发动机公司 | Method for controlling the consistency of the profile of the curved surface of turbine element |
| CN116038142A (en) * | 2022-06-30 | 2023-05-02 | 北京中科镭特电子有限公司 | Laser scribing height measurement method |
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| US6402195B1 (en) * | 1999-04-14 | 2002-06-11 | Bayerische Motoren Werke Aktiengesellschaft | Device for adjusting a vehicle head support and a method using such a device |
| CN1882280A (en) * | 2003-05-19 | 2006-12-20 | 智能生活技术有限公司 | Knitted transducer devices |
| CN102203547A (en) * | 2008-10-31 | 2011-09-28 | 株式会社藤仓 | Capacitance-type sensor |
| CN105283122A (en) * | 2012-03-30 | 2016-01-27 | 伊利诺伊大学评议会 | Appendage-mountable electronics that conform to surfaces |
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- 2016-03-18 CN CN201610154361.0A patent/CN105823411B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6402195B1 (en) * | 1999-04-14 | 2002-06-11 | Bayerische Motoren Werke Aktiengesellschaft | Device for adjusting a vehicle head support and a method using such a device |
| CN1321243A (en) * | 1999-07-09 | 2001-11-07 | 株式会社东金 | Capacitive deformation sensor and method of using the same |
| CN1882280A (en) * | 2003-05-19 | 2006-12-20 | 智能生活技术有限公司 | Knitted transducer devices |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109690237A (en) * | 2016-09-08 | 2019-04-26 | 赛峰飞机发动机公司 | Method for controlling the consistency of the profile of the curved surface of turbine element |
| CN109690237B (en) * | 2016-09-08 | 2023-12-12 | 赛峰飞机发动机公司 | Method for controlling the contour consistency of curved surfaces of turbine components |
| CN108195336A (en) * | 2017-12-26 | 2018-06-22 | 深圳市宇恒互动科技开发有限公司 | Method for sensing, the apparatus and system of object dimensional shape |
| CN116038142A (en) * | 2022-06-30 | 2023-05-02 | 北京中科镭特电子有限公司 | Laser scribing height measurement method |
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