CN1369688A - Automatic in-line leangth measuring method and instrument for shaped steel - Google Patents
Automatic in-line leangth measuring method and instrument for shaped steel Download PDFInfo
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- CN1369688A CN1369688A CN 01106484 CN01106484A CN1369688A CN 1369688 A CN1369688 A CN 1369688A CN 01106484 CN01106484 CN 01106484 CN 01106484 A CN01106484 A CN 01106484A CN 1369688 A CN1369688 A CN 1369688A
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- shaped steel
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- accurate measurement
- chip microcomputer
- bigness scale
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Abstract
The present invention has opened a on line automatic length measuring method for shape steel and its length measuring meter to the public. The method is especially suitable to be used for measuring lengthes of various shaped steel in automatic real time on production line without contaction manner. To improve the back ward state of using manual length measurement, the present invention has been formed by photoelectric detecting device for rough measuring and CCD length measuring device for accurate measuring and they are connected with I/O interface of 89C 51 single chip computer separately.
Description
The present invention relates to a kind of linear measure longimetry, be particularly useful for the length of noncontact mode automatic various shaped steel of The real time measure on production line.
Shaped steel is the major product that heavy steel rolling mill is produced, and comprises joist steel, channel-section steel, U shaped steel, H shaped steel, angle steel etc., is widely used in industry departments such as metallurgy, machinery, chemical industry, building, traffic, shipbuilding.In steel rolling mill finishing workshop, shaped steel also will do last linear measure longimetry work to shaped steel, and these work was always with manually measuring before aligning is put warehouse-in on the shelf.Obviously, this artificial survey is long, and not only labour intensity is big, and efficient is low, can not adapt to the requirement of modern production, and manually surveys length often owing to poor accuracy and measurement mistake, user's objection usually occurs or causes economic loss.
Purpose of the present invention just is to overcome the long backward situation of artificial survey, and provide that a kind of length measurement precision height, speed are fast, good reliability, online, the real-time automatic horizontal metroscope of shaped steel.
The object of the present invention is achieved like this, promptly adopts line array CCD survey length and Photoelectric Detection to carry out simultaneously, and the former is used for accurate measurement, and the latter is used for bigness scale, and accurate measurement and bigness scale are combined, thus the total length of accurate fast measuring shaped steel.Because line array CCD is surveyed the long contradiction that exists range and precision, have enough precision for guaranteeing to measure, the present invention only surveys the CCD device in more among a small circle long, only measures " remainder part " of length.Photoelectric Detection is formed (using 16 here) by some spots light source and same number of photoelectric sensor, and every bit light source and photoelectric sensor are formed a survey line, and each bar survey line is parallel to each other, and the ultimate range between every adjacent survey line is less than the accurate measurement scope.When the front end of shaped steel passed through survey line, photoelectric sensor sent signal, thereby measured steel long " integral part ".Long " integral part " of steel adds that " remainder part " is the total length of shaped steel.
The present invention has the following advantages and good effect:
1. owing to be the automatic horizontal metroscope of a kind of contactless, online, real-time shaped steel, so handling safety, labour intensity is little.
2. because the length measurement precision height has been avoided user's objection and economic loss.
3. because to survey long speed fast, and can be in real time will every shaped steel the length demonstration and print, but also type batch thereby has greatly improved labour productivity.
Describe in detail below in conjunction with drawings and Examples.
Fig. 1 is a fundamental diagram of the present invention.Wherein:
The 1-accurate measurement device, 1.1-CCD device, 1.2-lens, 1.3-line source; 2-bigness scale device, 2.1-pointolite, 2.2-photoelectric sensor; 3-shaped steel, 4-straightener, 5-raceway, 6-single-chip microcomputer, 7-microcomputer; L
1-accurate measurement length, L
2-bigness scale length, L
0Length between first survey line of-accurate measurement zero point and bigness scale, the L-total length.
1, accurate measurement adopts line array CCD to carry out, and is promptly finished by accurate measurement device 1.Accurate measurement device 1 is made up of CCD device 1.1, lens 1.2, line source 1.3, single-chip microcomputer 6.CCD device 1.1, lens 1.2 and light source 1.3 place the both sides of measured piece shaped steel 3 respectively, and lens 1.2 place the front of CCD device 1.1, and CCD device 1.1 and single-chip microcomputer 6 are electrically connected mutually.The TCD142 type video camera that CCD device 1.1 adopts Japanese Sony Corporation to produce has 2048 exposures as quick unit.The focal length of lens 1.2 is 50mm, and field angle is 40 °, optical system enlargement factor β=1/60.Line source 1.3 length are 1200mm.Above-mentioned condition can make the accurate measurement scope greater than 600mm.From the part of the light that line source 1.3 sends directly scioptics 1.2 project on the CCD device 1.1, another part light is then stopped by shaped steel 3, can't arrive on the CCD device 1.1.The end points P of shaped steel 1.3 is imaged on the Q point of CCD device 1.1 target surfaces through lens 1.2.On the left side that Q is ordered, CCD device 1.1 is bright at this regional pixel, the output noble potential; On the right that Q is ordered, the pixel of CCD device 1.1 in this zone is secretly, the output electronegative potential, thus can and calculate the end points P position of shaped steel 3 by the position of CCD device 1.1 and single-chip microcomputer 6 detection Q, thus obtain the accurate measurement length L
1
2, bigness scale is finished by bigness scale device 2.Bigness scale device 2 is made up of 16 surveys line and single-chip microcomputer 6, and every survey line is formed by pointolite 2.1 and photoelectric sensor 2.2, places the both sides of measured piece shaped steel 3 respectively, and photoelectric sensor 2.2 is electrically connected mutually with single-chip microcomputer 6.Pointolite 2.1 is received by photoelectric sensor 2.2, when light beam is stopped by shaped steel 3, and photoelectric sensor 2.2 output noble potentials; The light beam that is not blocked then projects light on the photoelectric sensor 2.2, makes photoelectric sensor 2.2 output electronegative potentials, and the output of each photoelectric sensor 2.2 is received by single-chip microcomputer 6 corresponding I/O mouths.
3, the front end when shaped steel overlaps with a certain light, and the terminal of shaped steel is that bigness scale and accurate measurement are measured simultaneously in this moment in the accurate measurement scope time, detects the shaped steel front ends and which root light meets by single-chip microcomputer 6, just can obtain the length L of bigness scale exactly
2Try to achieve the accurate measurement length L
1With the bigness scale length L
2After, just can be regarded as out the length overall of shaped steel:
L＝L
2+L
1+L
0
In addition, the present invention also takes following technical measures;
1. use phosphorus arsenic fossil laser instrument replacement point light source 2.1, can remove the optical tubes of forming by lens from.Optical tubes in the past often damages by pressure and breaks, and the gallium arsenide phosphide laser instrument projects a branch of line source after adding cylindrical lens, with vertically to, bright elongated light beam projects on the light-sensitive surface of photosensitive device, so above-below direction need not adjusted, just the light-sensitive surface of beam alignment photosensitive device can shortened maintenance and adjustment time greatly as long as on surface level, rotate light source.
2. the light source that becomes with 1920 super brightness light diode combinations substitutes fluorescent light source 1.3, because the serviceable life of daylight lamp is short, and lamplight brightness can reduce after the long period uses, and the long service life of super brightness light diode, can reach more than 10000 hours serviceable life, need not frequent replacing.
3. CCD device 1.1 is installed on the raceway 5, is convenient to the adjustment of accurate measurement device 1.
By the improvement of above-mentioned three aspects, the practicality and the reliability of shaped steel length automatic measuring instrument can be improved greatly.
Technical indicator of the present invention:
1. measurement range can be measured the shaped steel of length between 5 to 12.5 meters.
2. measuring error is not more than 3 centimetres.
3. measure shaped steel speed: the time of finishing a shaped steel linear measure longimetry is not more than 0.002 second.
The present invention can finish the linear measure longimetry of a shaped steel in 2/1000ths seconds time, the length of the every shaped steel that single-chip microcomputer will measure is sent to microcomputer with serial communication mode, microcomputer is stored the length of every shaped steel, print, and count the kind and the quantity of the shaped steel that each teams and groups produces every day and the monthly output of the steel of all size.Because its measuring accuracy height, the efficient height can be widely used in the steel measurement of length.
Claims (4)
1, the rectangular method of the on-line automatic survey of a kind of shaped steel is characterized in that adopting line array CCD to survey long and Photoelectric Detection is carried out simultaneously, and the former is used for accurate measurement, and the latter is used for bigness scale, and accurate measurement and bigness scale are combined, thus the total length of accurate fast measuring shaped steel.
2, implement the on-line automatic horizontal metroscope of shaped steel of the rectangular method of the claim 1 on-line automatic survey of described a kind of shaped steel, it is characterized in that instrument mainly is made up of accurate measurement device (1) and bigness scale device (2):
1. accurate measurement device (1) is made up of CCD device (1.1), lens (1.2), line source (1.3), single-chip microcomputer (6), CCD device (1.1), lens (1.2) and light source (1.3) place the both sides of measured piece shaped steel (3) respectively, lens (1.2) place the front of CCD device (1.1), and CCD device (1.1) and single-chip microcomputer (6) are electrically connected mutually;
2. bigness scale device (2) is made up of 16 surveys line and single-chip microcomputer (6), and every survey line is formed by pointolite (2.1) and photoelectric sensor (2.2), places the both sides of measured piece shaped steel (3) respectively, and photoelectric sensor (2.2) all and single-chip microcomputer (6) is mutual is electrically connected;
3. single-chip microcomputer (6) is electrically connected mutually with microcomputer (7).
3,, it is characterized in that the line source of accurate measurement (1) adopts the light diode combinations to form by the on-line automatic horizontal metroscope of the described a kind of shaped steel of claim 1.
4,, it is characterized in that the pointolite (2.1) of bigness scale device (2) adopts laser instrument by the on-line automatic horizontal metroscope of the described a kind of shaped steel of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01106484 CN1369688A (en) | 2001-02-16 | 2001-02-16 | Automatic in-line leangth measuring method and instrument for shaped steel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01106484 CN1369688A (en) | 2001-02-16 | 2001-02-16 | Automatic in-line leangth measuring method and instrument for shaped steel |
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| Publication Number | Publication Date |
|---|---|
| CN1369688A true CN1369688A (en) | 2002-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01106484 Pending CN1369688A (en) | 2001-02-16 | 2001-02-16 | Automatic in-line leangth measuring method and instrument for shaped steel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438809A (en) * | 2013-09-03 | 2013-12-11 | 天津大学 | Vehicle-width measurement method and device based on area-array / linear-array cameras |
| CN104776805A (en) * | 2015-04-15 | 2015-07-15 | 安徽机电职业技术学院 | Cable metering device |
| CN107949765A (en) * | 2015-09-10 | 2018-04-20 | 株式会社Posco | Dimension measurement device and method |
| CN108151808A (en) * | 2018-01-09 | 2018-06-12 | 湖北汽车工业学院 | A kind of steel pipe measuring device and method based on image procossing |
-
2001
- 2001-02-16 CN CN 01106484 patent/CN1369688A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103438809A (en) * | 2013-09-03 | 2013-12-11 | 天津大学 | Vehicle-width measurement method and device based on area-array / linear-array cameras |
| CN104776805A (en) * | 2015-04-15 | 2015-07-15 | 安徽机电职业技术学院 | Cable metering device |
| CN107949765A (en) * | 2015-09-10 | 2018-04-20 | 株式会社Posco | Dimension measurement device and method |
| CN108151808A (en) * | 2018-01-09 | 2018-06-12 | 湖北汽车工业学院 | A kind of steel pipe measuring device and method based on image procossing |
| CN108151808B (en) * | 2018-01-09 | 2019-10-08 | 湖北汽车工业学院 | A kind of steel pipe measuring device and method based on image procossing |
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