CN1707220A - Screw-thread steel three-parameter on-line measuring system - Google Patents
Screw-thread steel three-parameter on-line measuring system Download PDFInfo
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- CN1707220A CN1707220A CN 200410009187 CN200410009187A CN1707220A CN 1707220 A CN1707220 A CN 1707220A CN 200410009187 CN200410009187 CN 200410009187 CN 200410009187 A CN200410009187 A CN 200410009187A CN 1707220 A CN1707220 A CN 1707220A
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Abstract
The on-line three screw thread steel parameter measuring system features that the measuring system consists of linear CCD array measuring instrument for measuring longitudinal rib height, photoelectronic collimating optical projecting instrument for measuring inner diameter and transverse rib height, and computerized control system. The linear CCD array measuring instrument and the photoelectronic collimating optical projecting instrument are two independent measuring systems to measure screw thread steel in two perpendicular directions through sharing one common measuring head. The measuring signals of two directions are fed to the computerized control system simultaneously, and the computerized control system completes data treatment before outputting measurement results.
Description
Affiliated technical field
The present invention relates to screw-thread steel three Parameter Measuring systems.
Technical background
The screw-thread steel parameter measurement instrument of introducing in present various document or the data all is to adopt linear array or area array CCD to measure basically.As Chen Lincai, Jiang Chengzhi, Fu Jiyou, " the online Image Detection Study on Technology of hot rolling ribbed steel bar " of Feng Zhengming, Chinese journal of scientific instrument, 1998,19 (6): 586-591; Liu Zhiying, Chen Wenyi, " experimental simulation of screw-thread steel external form parameter on-line measurement " of Yue Zuzhou, photoelectron laser, 1994,5 (4), 220-223; " design of CCD vision detection system " of Shen Aihong, Wuxi Light Industry Univ.'s journal, 1999,18 (3), 98-102; " the single-shaft calliper gauge expansion is helped the device of end surface measurement ", patent No. ZL 99 2 44501.9, the patentee: ChenBing Sheng; " the face size measurement mechanism of high-speed moving object ", patent No. ZL 00 2 38166.2, the patentee: ChenBing Sheng etc.
Above-mentioned instrument or device, some of them are static measurement instrument, (as Chen Lincai, Jiang Chengzhi, Fu Jiyou, " the online Image Detection Study on Technology of hot rolling ribbed steel bar " of Feng Zhengming, Chinese journal of scientific instrument, 1998,19 (6): 586-591; Liu Zhiying, Chen Wenyi, " experimental simulation of screw-thread steel external form parameter on-line measurement " of Yue Zuzhou, photoelectron laser, 1994,5 (4), 220-223; " design of CCD vision detection system " of Shen Aihong, Wuxi Light Industry Univ.'s journal, 1999,18 (3), 98-102 etc.); For dynamic screw-thread steel measured piece, be may not obtain the cross rib size.And " the single-shaft calliper gauge expansion being helped the device of end surface measurement ", patent No. ZL 99 2 44501.9, the patentee: ChenBing Sheng; " the face size measurement mechanism of high-speed moving object ", patent No. ZL 00 2 38166.2, the patentee: ChenBing Sheng etc. also are online survey (interior) footpath instrument, or can measure the vertical rib of screw-thread steel after transforming.
Find in the practical application,, can not measure real screw-thread steel cross rib size because the response time of CCD is limit.Owing to adopted line array CCD serial scan mode, per second is the highest adopts 666 cross sections, calculates with the mill speed of 20 meter per seconds, and its cross section spacing is: 666/ second=30 millimeters of 20 meter per second ÷, and the high sampling interval requirement≤0.5mm of screw-thread steel cross rib does not far reach measurement requirement obviously.These effects limit can not measure the cross rib height based on the online caliper of existing principle.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, a kind of high problems of measurement of cross rib that solved is provided, realized the screw-thread steel three Parameter Measuring systems of three Parameter Measuring.
The technical solution adopted for the present invention to solve the technical problems is: screw-thread steel three Parameter Measuring systems, its characteristics are: by measuring the vertical high line array CCD measuring instrument of rib, measure internal diameter, the photoelectronic collimating formula optical projector that cross rib is high and form with computer control system, photoelectronic collimating formula optical projector and line array CCD caliper are two independently measuring systems, on two orthogonal directions of screw-thread steel, measure respectively, both shared measuring heads, the measuring-signal of both direction is imported computer control system simultaneously, and computer control system is exported measurement result after data processing.
Described photoelectronic collimating formula optical projector is made up of light source, measuring head, imaging system, photoelectronic collimating device, produce directional light by light source and illuminate measured piece in measuring head inside, its projection is amplified through imaging system, with the clear video imaging of surveying on projection screen, measure after the photoelectronic collimating device aims at, and measurement data is imported Computer Processing.
Described line array CCD measuring instrument part is made up of light source, measuring head, line array CCD gamma camera, the directional light that light source sends through optical system illuminates measured piece, the line array CCD gamma camera aims at imaging measurement to measured piece, and picture signal is imported computing machine after converting digital signal to.
Described computer control system is made up of PC host computer, industrial computer and some single-chip microcomputers, respectively executed in parallel data base administration, parameter acquisition, calculating and Presentation Function.
Principle of work of the present invention is: because measurand is among the high temperature and high speed motion, therefore can only adopt non-cpntact measurement.Measuring principle adopts the optical projection method in the traditional measurement instrument, and it is optical projector that its typical case uses, and effect is that the outer table skeleton with measured piece is imaged on the shadow screen and measures; Because the optical projection imaging is than the response time much shorter of CCD imaging, thereby can obtain the cross rib contour images of screw-thread steel.This measuring system adopts advanced photoelectronic collimating formula projector to measure the cross rib and the internal diameter of screw-thread steel, and adopts the CCD gamma camera to measure the vertical rib of screw-thread steel.
The present invention's beneficial effect compared with prior art is:
1, reduces labor intensity, enhance productivity.Screw-thread steel factory at present adopts under the situation of shutting down; use kind of calliper by the workman down hot; labour intensity is very big; and can not detect in real time, in time adjust milling train, become substandard products or waste product in case find overproof existing large quantities of steel; also having a strong impact on the raising of production efficiency stop time; therefore the present invention has realized on-line measurement, has alleviated labour intensity, has improved production efficiency.
2, in fact domestic literature data introduction at present and the online caliper of the employed rod of screw-thread steel manufacturing enterprise (line) material can only measure internal diameter or two parameters of vertical rib, can not really measure cross rib height h.And the design adopts photoelectronic collimating formula projector and computing machine parallel sampling technology, has realized three Parameter Measuring, meets national standard, has satisfied the high-quality requirement of enterprise.
Description of drawings
Fig. 1 is a theory of constitution block diagram of the present invention;
Fig. 2 is the structured flowchart of photoelectronic collimating formula projector of the present invention;
Fig. 3 is a computer control system composition frame chart of the present invention;
Fig. 4 is the raster count signal conditioning circuit composition diagram of photoelectronic collimating formula optical projector of the present invention.
Embodiment
As depicted in figs. 1 and 2, the present invention is by measuring the vertical high line array CCD measuring instrument of rib, measurement internal diameter, photoelectronic collimating formula optical projector, computer control system that cross rib is high, support and targeting part 9 compositions.Wherein photoelectronic collimating formula optical projector is made up of light source 1, measuring head 7, imaging system 2, photoelectronic collimating device 3, produce directional light by light source and illuminate measured piece in measuring head inside, its projection is amplified through imaging system, with the clear video imaging of surveying on projection screen, measure after the photoelectronic collimating device aims at, and measurement data is imported Computer Processing.Line array CCD measuring instrument part is made up of CCD light source 5, measuring head 7 (8 for measuring endoporus), line array CCD gamma camera 6, the directional light that CCD light source 5 sends through optical system illuminates measured piece, the line array CCD gamma camera aims at imaging measurement to measured piece, and picture signal is imported computing machine after converting digital signal to.Computer control system is made up of 1 PC host computer, 1 industrial computer and 4 single-chip microcomputers, respectively executed in parallel data base administration, parameter acquisition, calculating and Presentation Function.Each part mentioned above is installed on support and the targeting part, when measuring head 7 needs transposition, can carry out transposition by the indexing mechanism on it.
Photoelectronic collimating formula optical projector and line array CCD caliper are two independently measuring systems, on two orthogonal directions of screw-thread steel, measure respectively, both shared measuring heads 7, the measuring-signal of both direction is imported computer control system 4 simultaneously, and computer control system 4 is exported measurement result after data processing.
The light source of photoelectronic collimating formula optical projector adopts the cola lighting system among the present invention, can produce source of parallel light.Optical projection object lens magnification β
1=10 times, fiber amplifier enlargement factor β
2=2 times, total magnification β=β
1* β
2=20 times.Enlarging objective should meet the object space telecentric beam path, and lens can be selected finished product, such as: photographic lens or imaging lens etc., but should be protected optical system.
The photoelectronic collimating tracker can adopt automatic track aiming or non-automatic slide calliper rule to survey long photoelectronic collimating (by the horizontal class decision of subscriber equipment).Sighting device is exported 32 signals and is given STD3 under the situation of gating
#And STD4
#, because signal processing circuit is huger, inconvenience is placed in the STD slot, therefore is placed on outside the machine, draws nearly STD by the bus switching edge connector.
The displacement of photoelectronic collimating measuring table, promptly grating chi displacement behind raster count signal conditioning circuit 10, is exported the digital quantity of representing displacement, exports to STD bus with the binary-coded decimal form.Raster count signal conditioning circuit 10 is made up of opto-electronic conversion 11, shaping circuit 12, quadruple and sensing circuit 13, opto-electronic conversion 14, as shown in Figure 4.
The internal diameter of screw-thread steel, cross rib contour images are after the imaging of optical projector imaging system, image light signals becomes electric signal through opto-electronic conversion, be input to signal conditioning circuit, amplify and binary conversion treatment, the two-value signal of exporting 16 group 32 tunnel is given STD bus, with internal diameter and the cross rib height that calculates the screw-thread steel upper and lower half respectively.
As shown in Figure 3, computer control system of the present invention adopts the bus-type distributed structure, connects by RS485 and STD bus, mainly by host computer, STD0
#Industrial computer, and STD1
#～STD4
#Form in computing machine, also comprise some signal conditions and driving circuit simultaneously.
System's host computer mainly carries out data base administration.Host computer does not need long-term work, is to use once in each class's handing-over, and is placed on use in the control cabin, therefore can select the IBM-PC personal microcomputer.
STD0
#Be computing machine on duty, carry out data acquisition, calculating and demonstration inner diameter d, the high h of cross rib, the vertical high h of rib
1Requirement has certain data processing capability and enough internal memories, so that the data of work can remain optional 8088 industrial computer series in each teams and groups.
STD1
#Be automatic control single chip computer, the displacement that the torsion angle of major control measuring head device and measurement are beated; The memory space of this machine is little, lays particular emphasis on process control, can select low-cost MCS-51 series monolithic.STDl
#The binary-coded decimal signal that provides for the measuring table grating of input signal and the switching value signal that provides after putting in place of measuring head torsion angle; Be output as the gating signal and the step motor drive signal of grating circuit.
STD2
#For surveying vertical rib height h
1The vertical high mean value h of rib is gathered and calculated to single-chip microcomputer
1, the memory space of this machine and calculated amount are all little, can select low-cost MCS-51 series monolithic equally.The line array CCD measuring-signal becomes pulse signal through processing of circuit, sends into STD2
#It is wide to carry out the pulse survey afterwards, according to STD0
#The mean value of the inner diameter d of output is scaled the data h that the rib height is indulged in representative
1Export to STD0 by STD bus then
#
STD3
#For measuring screw-thread steel first half curve (d/2+h)
OnSingle-chip microcomputer is gathered radius (d/2) on the screw-thread steel
OnWith the high h of last cross rib
On(d/2+h) of sum
OnCurve, and calculating mean value (d/2)
OnAnd h
OnThis is confidential asks that data processing function is strong, speed is fast, and bigger memory capacity is arranged, so select 8088 family machines for use.
STD4
#For measuring screw-thread steel Lower Half curve (d/2+h)
DownSingle-chip microcomputer is gathered radius (d/2) under the screw-thread steel
DownWith the high h of following cross rib
Down(d/2+h) of sum
DownCurve, and calculating mean value (d/2)
DownAnd h
DownThis is confidential asks that data processing function is strong, speed is fast, and bigger memory capacity is arranged, so select 8088 family machines for use.
The photoelectronic collimating device is exported 32 signals and is given STD3 under the situation of gating
#And STD4
#, because signal processing circuit is huger, inconvenience is placed in the STD slot, therefore is placed on outside the machine, draws nearly STD by the bus switching edge connector.
In the each part mentioned above, except that PC, all be installed in scene, wherein STD0
#～STD4
#Be installed in the on-the-spot rack, LED display is installed in the rack top.
Claims (4)
1, screw-thread steel three Parameter Measuring systems, it is characterized in that: by measuring the vertical high line array CCD measuring instrument of rib, measure the high photoelectronic collimating formula optical projector of internal diameter, cross rib and form with computer control system, photoelectronic collimating formula optical projector and line array CCD caliper are two independently measuring systems, on two orthogonal directions of screw-thread steel, measure respectively, both shared measuring heads, the measuring-signal of both direction is imported computer control system simultaneously, and computer control system is exported measurement result after data processing.
2, screw-thread steel according to claim 1 three Parameter Measuring systems, it is characterized in that: described photoelectronic collimating formula optical projector is made up of light source, measuring head, imaging system, photoelectronic collimating device, produce directional light by light source and illuminate measured piece in measuring head inside, its projection is amplified through imaging system, with the clear video imaging of surveying on projection screen, measure after the photoelectronic collimating device aims at, and measurement data is imported Computer Processing.
3, screw-thread steel according to claim 1 three Parameter Measuring systems, it is characterized in that: described line array CCD measuring instrument part is made up of light source, measuring head, line array CCD gamma camera, the directional light that light source sends through optical system illuminates measured piece, the line array CCD gamma camera aims at imaging measurement to measured piece, and picture signal is imported computing machine after converting digital signal to.
4, screw-thread steel according to claim 1 three Parameter Measuring systems, it is characterized in that: described computer control system is made up of PC host computer, industrial computer and some single-chip microcomputers, respectively executed in parallel data base administration, parameter acquisition, calculating and Presentation Function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100091878A CN100520283C (en) | 2004-06-09 | 2004-06-09 | Screw-thread steel three-parameter on-line measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100091878A CN100520283C (en) | 2004-06-09 | 2004-06-09 | Screw-thread steel three-parameter on-line measuring system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1707220A true CN1707220A (en) | 2005-12-14 |
| CN100520283C CN100520283C (en) | 2009-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100091878A Expired - Fee Related CN100520283C (en) | 2004-06-09 | 2004-06-09 | Screw-thread steel three-parameter on-line measuring system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033137A (en) * | 2012-12-19 | 2013-04-10 | 浙江宇光照明科技有限公司 | Device for measuring three-point stretching length of high pressure sodium lamp electrode assembly |
| CN104596432A (en) * | 2014-12-10 | 2015-05-06 | 安东检测有限公司 | Petroleum drill pipe joint detection device and method |
| CN107202544A (en) * | 2017-07-31 | 2017-09-26 | 深圳市欧视达自动化设备有限公司 | The detection means and detection method of a kind of screw rod |
| CN111103018A (en) * | 2020-01-09 | 2020-05-05 | 苏州市建设工程质量检测中心有限公司 | Reinforcing steel bar parameter measuring device and method based on vision |
| CN112629407A (en) * | 2020-11-24 | 2021-04-09 | 西安理工大学 | Deformed steel bar size measuring method based on image analysis |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2693267B1 (en) * | 1992-07-03 | 1994-10-07 | France Telecom | Very precise device for measuring the internal diameter of a tube over a long length. |
| US6289600B1 (en) * | 1999-11-02 | 2001-09-18 | United States Pipe & Foundry Company | Non-contact measuring device |
| CN2434638Y (en) * | 2000-07-05 | 2001-06-13 | 陈炳生 | Section size measurer for high speed moving object |
| CN2589935Y (en) * | 2002-12-27 | 2003-12-03 | 西安交通大学 | Portable grating projection three-dimensional profile measuring instrument |
-
2004
- 2004-06-09 CN CNB2004100091878A patent/CN100520283C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033137A (en) * | 2012-12-19 | 2013-04-10 | 浙江宇光照明科技有限公司 | Device for measuring three-point stretching length of high pressure sodium lamp electrode assembly |
| CN103033137B (en) * | 2012-12-19 | 2015-07-29 | 浙江宇光照明科技有限公司 | A kind of high-pressure mercury lamp electrode assemblie 3 stretching measurement apparatus |
| CN104596432A (en) * | 2014-12-10 | 2015-05-06 | 安东检测有限公司 | Petroleum drill pipe joint detection device and method |
| CN104596432B (en) * | 2014-12-10 | 2018-05-04 | 安东检测有限公司 | Joint of petroleum drill rod detection device and method |
| CN107202544A (en) * | 2017-07-31 | 2017-09-26 | 深圳市欧视达自动化设备有限公司 | The detection means and detection method of a kind of screw rod |
| CN111103018A (en) * | 2020-01-09 | 2020-05-05 | 苏州市建设工程质量检测中心有限公司 | Reinforcing steel bar parameter measuring device and method based on vision |
| CN112629407A (en) * | 2020-11-24 | 2021-04-09 | 西安理工大学 | Deformed steel bar size measuring method based on image analysis |
| CN112629407B (en) * | 2020-11-24 | 2024-03-22 | 西安理工大学 | Deformed steel bar dimension measuring method based on image analysis |
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| Publication number | Publication date |
|---|---|
| CN100520283C (en) | 2009-07-29 |
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