CN105136008A - Strip steel offset detection apparatus - Google Patents
Strip steel offset detection apparatus Download PDFInfo
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- CN105136008A CN105136008A CN201510442289.7A CN201510442289A CN105136008A CN 105136008 A CN105136008 A CN 105136008A CN 201510442289 A CN201510442289 A CN 201510442289A CN 105136008 A CN105136008 A CN 105136008A
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- electric capacity
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 57
- 239000010959 steel Substances 0.000 title claims abstract description 57
- 238000001514 detection method Methods 0.000 title abstract description 11
- 230000003321 amplification Effects 0.000 claims abstract description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 32
- 229910052782 aluminium Inorganic materials 0.000 claims description 32
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 239000004020 conductor Substances 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 11
- 238000013500 data storage Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 4
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 101100015484 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) GPA1 gene Proteins 0.000 claims description 3
- 239000012212 insulator Substances 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 3
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000012545 processing Methods 0.000 abstract description 2
- 238000010924 continuous production Methods 0.000 abstract 2
- 230000008054 signal transmission Effects 0.000 abstract 1
- 230000003068 static effect Effects 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000003278 mimic effect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
A strip steel offset detection apparatus belongs to the measuring technical field. The invention concretely relates to an apparatus for on-line detection of the operating offset of strip steel on a continuous production line by using a capacitive sensor, and is aimed at solving the disadvantages of a conventional capacitive strip steel offset detection apparatus. A coaxial shield cable is adopted to serve as a signal transmission line of the capacitive sensor. The strip steel offset detection apparatus is characterized by conducting digital on-line detection on the running offset of strip steel on a continuous production line by utilizing a differential capacitive sensor, and by providing standard signals to a strip steel error-correcting control system through processing such as zeroing, differential operation, bias and amplification, the signals including current signals, voltage signals and RS485 signals. The apparatus is suitable for various important occasions that need strict requirements in terms of offset detection of strip steel, and has the advantages of digitlization, high reliability, output interface standardization, etc.
Description
Technical field
The present invention's one band steel offset detecting device, belongs to field of measuring technique, is specifically related to a kind of capacitive transducer that utilizes and runs with steel the device that side-play amount carries out on-line checkingi on tinuous production.
Background technology
On the tinuous production of band steel, due to the machine error in unit, the reasons such as vibration and strip tension fluctuation cause band steel to occur deviation phenomenon, make band steel peripheral collision easily occur in the process, scratch equipment and cause broken belt stopping production accident, have a strong impact on economic benefit.Band steel offset detecting device is requisite vitals in strip steel deviation control system.Traditional band steel offset detecting device kind is a lot, mainly contains photo-electric, inductance type and capacitance type detector.It is high that photo-electric band steel offset detecting device has precision, responds fast feature, but the stability of site environment, light source and life-span affect very large on band steel offset detection; Inductance type band steel offset detecting device has non-maintaining, that precision is high advantage, but its complex structure, cost is high; Condenser type band steel offset detecting device has the advantage that structure is simple, non-maintaining, precision is high, and simultaneously cost is also low, but there is the problem that circuit is easily disturbed.Wherein the current onsite application of condenser type band steel offset detecting device of mimic channel formation is more, at number of patent application be disclose in the patent documentation of CN200510128487 a kind of highly sensitive, cost is low, installs simple capacitance sensing type band steel and runs offset detector.This invention achieves the detection of capacitance signal and conditioning mainly through mimic channel and provides band steel shifted signal for strip steel deviation system.
Existing condenser type band steel offset detecting device Problems existing:
1. adopt mimic channel, poor anti jamming capability.
2. adopt amplitude modulation principle design, need to adopt and separate voltage regulator/transformer processing signals, there is mechanical zero in the adjustment of magnetic core of transformer position, easily produces zero migration at the scene in vibration & noise environment, causes to measure and lost efficacy.
3. offset displacement output signal is non-standard signal, is only suitable for the dedicated control device supporting with it.
Summary of the invention
The present invention's one band steel offset detecting device, its object is to the drawback solving the existence of existing condenser type band steel offset detecting device, adopt coaxial shielded cable as the signal transmssion line of capacitive transducer, disclose a kind of differential capacitance sensor that utilizes and the device of digital on-line checkingi is carried out to the side-play amount run on tinuous production of band steel, and provide alternative multiclass standard signal for strip steel deviation control system.Be applicable to various important events band steel offset detection being had to strict demand, there is the advantages such as digitizing, reliability are high, output interface standardization.
The present invention's one band steel offset detecting device, package unit is made up of capacitive transducer and digital electric capacitance measuring circuits two parts, described capacitive transducer is made up of C type aluminum frame the 1, the 2nd C type aluminum frame 2, first concentric cable 3, second concentric cable 4, metallic shield net connecting line 9 and band steel 10, described first concentric cable 3 is the same with the structure of the second concentric cable 4, form by pvc sheath 5, metallic shield net 6, polyethylene insulator 7, copper conductor 8, band steel 10 is between a C type aluminum frame 1 and the 2nd C type aluminum frame 2, it is characterized in that copper conductor one end and a C type aluminum frame 1 of the first concentric cable 3 weld together, copper conductor one end and the 2nd C type aluminum frame 2 of the second concentric cable 4 weld together, the metallic shield net of the first concentric cable 3 is unsettled near one end of a C type aluminum frame 1, the metallic shield net of the second concentric cable 4 is unsettled near one end of the 2nd C type aluminum frame 2, the other end of the other end of the metallic shield net of the first concentric cable 3 and the metallic shield net of the second concentric cable 4 is linked together by metallic shield net connecting line 9, three lines are drawn on the first concentric cable 3 and the second concentric cable 4, wherein A line is the other end of the first concentric cable 3 copper conductor, B line is the other end of the second concentric cable 4 copper conductor, O line is metallic shield net connecting line 9, electric capacity C1 is formed between A and O, electric capacity C2 is formed between B and O, material and the length of the first concentric cable 3 and the second concentric cable 4 should be completely the same, can select in 10 to 20 meters of length ranges, described digital electric capacitance measuring circuits
Digital signal circuit 11 is turned by capacitance, single-chip microcomputer 12, subtraction circuit 13, biasing circuit 14, signal amplification circuit 15, SPI communication interface 16, single-chip microcomputer D/A converting circuit 17, voltage turns normalized current output circuit 18, singlechip serial communication circuit 19, RS485 serial output circuit 20, data storage circuitry 21, hardware watchdog circuit 22 and zero point store button 23 to form, the first measurement port that A line and capacitance turn digital signal circuit 11 is connected, the second measurement port that B line and capacitance turn digital signal circuit 11 is connected, the common port that O line and capacitance turn digital signal circuit 11 is connected, the value of electric capacity C1 and the value of electric capacity C2 turn digital signal circuit 11 by capacitance and gather and convert digital signal to, the digital signal of electric capacity C1 value and electric capacity C2 value is input to single-chip microcomputer 12 by the SPI communication interface 16 of single-chip microcomputer 12, simulating signal is converted to by the single-chip microcomputer D/A converting circuit 17 of single-chip microcomputer 12, respectively from DAC0 mouth and the output of DAC1 mouth of single-chip microcomputer D/A converting circuit 17, two paths of signals realizes differential wave through subtraction circuit 13 and exports, the zero-error of biasing circuit 14 pairs of differential output signals corrects, realize on-line tuning at zero point, signal amplification circuit adjusts later differential wave and amplify 15 pairs of zero point, and signal output voltage scope is limited within 0 ~ 5V, by VOUT mouth outputting standard voltage signal, simultaneously voltage turns normalized current output circuit 18 VOUT mouth outputting standard voltage signal is converted to 4 ~ 20mA signal, by IOUT mouth outputting standard current signal, electric capacity C1 value after single-chip microcomputer 12 process is simultaneously communicated with RS485 serial output circuit 20 by the singlechip serial communication circuit 19 of single-chip microcomputer 12 with the digital signal of electric capacity C2 value, by the digital signal of SOUT output capacitance C1 value and electric capacity C2 value, data storage circuitry the 21 pairs of zero points to store button 23 press after static zero point information and the digital signal of output capacitance C1 value and electric capacity C2 value store, the deadlock situation of hardware watchdog circuit 22 pairs of single-chip microcomputers 12 automatically resets.
The present invention's one band steel offsets digital pick-up unit and has the following advantages:
I. adopt digital capacitive detection circuit, improve the antijamming capability of system;
II. achieve with static number zeroing and store zero point and adjustment, in vibration & noise environment, stability is better.
III. offset displacement output signal type can select standard voltage signal, standard current signal and RS485 signal of communication.
Accompanying drawing explanation
Accompanying drawing 1 capacitor sensor structure figure
1. C type aluminum frame 2. a 2nd C type aluminum frame 3. first concentric cable 4. second concentric cable 5. pvc sheath 6. metallic shield net 7. polyethylene insulator 8. copper conductor 9. metallic shield net connecting line 10. is with steel
Accompanying drawing 2 digital electric capacitance measuring circuits figure
11. capacitances turn digital signal circuit 12. single-chip microcomputer 13. subtraction circuit 14. biasing circuit 15. signal amplification circuit 16.SPI communication interface 17. single-chip microcomputer D/A converting circuit 18. voltage and turn normalized current output circuit 19. singlechip serial communication circuit 20.RS485 serial output circuit 21. data storage circuitry 22. hardware watchdog circuit 23. and store button zero point.
Embodiment
embodiment 1:
The present invention is further illustrated a kind of with the application of steel offset detecting device on band steel tinuous production below in conjunction with accompanying drawing 1 and accompanying drawing 2, and the principle of work that the present invention detects.
According to accompanying drawing 1 a C type aluminum frame 1 and the 2nd C type aluminum frame 2 be arranged on and be with steel tinuous production both sides, band steel 10 passes in the middle of C type aluminum frame, one C type aluminum frame 1 and the 2nd C type aluminum frame 2 need when installing to insulate with other metallic magnetism, ensure that two C type aluminum frame insulate with the earth, first concentric cable 3 welds with middle part, two C type aluminum frame sides with the copper conductor 8 of the second concentric cable 4, draw signal wire from A, O, B tri-terminals as shown in Figure 1, be connected with tri-terminals of A, O, the B shown in accompanying drawing 2 respectively.
1. zero point static adjust
After having assembled, first static adjust at zero point is carried out, make band steel on right position, be placed in C type aluminum frame 1 and the 2nd C type aluminum frame 2 middle, in respective C type aluminum frame middle on upper-lower position, at this moment steel is with to remain static, make the first concentric cable 3 and the second concentric cable 4 parameter completely the same, one C type aluminum frame 1 and the 2nd C type aluminum frame 2 parameter completely the same, and band steel position meets static adjust condition at zero point, electric capacity C1 value and electric capacity C2 value should be equal in theory, namely electric capacity C1 value is identical with the digital signal of electric capacity C2 value, but in reality due to C type aluminum frame and concentric cable in the fabrication process with the slight error that produces unavoidably on putting position, electric capacity C1 value and electric capacity C2 value be there are differences, now should think that band steel is just in middle, namely original null position is in, button 23 is stored zero point so press, single-chip microcomputer 12 will now electric capacity C1 value and electric capacity C2 value correct again, with electric capacity C1 value for benchmark, electric capacity C2 value is made to equal electric capacity C1 value, and this information is stored in data storage circuitry 21, revise by electric capacity C2 value, complete static adjust at zero point.After having carried out static adjust at zero point, unless concentric cable wiring is reinstalled or changed to C type aluminum frame, zero point, static adjust did not generally need again to carry out.
2. Gain tuning
After zero point, static adjust completed, the digital signal of electric capacity C1 value and electric capacity C2 value exports from DAC0 mouth and DAC1 mouth respectively, completes differential output by subtraction circuit 13.Then allow band steel 10 on band steel tinuous production, produce peak excursion and to the right respectively left, the now gain of signalization amplifying circuit 15, makes the corresponding 0V of peak excursion left, and the corresponding 5V of peak excursion to the right, realizes Gain tuning.
3. online adjustment at zero point
After zero point static adjust, band steel can enter normal operating condition, find that if be in operation band steel is not at zero point, now can be adjusted by biasing circuit 14, biasing circuit 14 is the adding circuits be made up of operational amplifier, by horizontally slipping of slide rheostat R, positive or negative voltage signal can be applied in totalizer, thus the zero point that on-line tuning band steel is in operation.
4. signal exports
As shown in Figure 1, when being with steel 10 left avertence, electric capacity C1 increases, and electric capacity C2 reduces; Otherwise when being with steel right avertence, electric capacity C1 reduces, and electric capacity C2 increases.The differential output capacitance signal that C1 deducts C2 can reflect the shift state being with steel 10 more delicately.VOUT end exports the 0 ~ 5V signal corresponding with band steel 10 side-play amount, and 2.5V represents zero point, and IOUT end exports the 4 ~ 20mA corresponding with band steel 10 side-play amount, and 12mA represents zero point, and SOUT end is with the digital signal of RS485 protocol format output capacitance C1 and electric capacity C2.
Claims (1)
1. the present invention's one band steel offset detecting device, package unit is made up of capacitive transducer and digital electric capacitance measuring circuits two parts, described capacitive transducer is by a C type aluminum frame (1), 2nd C type aluminum frame (2), first concentric cable (3), second concentric cable (4), metallic shield net connecting line (9) and band steel (10) composition, described first concentric cable (3) is the same with the structure of the second concentric cable (4), by pvc sheath (5), metallic shield net (6), polyethylene insulator (7) and copper conductor (8) composition, band steel (10) is between a C type aluminum frame (1) and the 2nd C type aluminum frame (2), it is characterized in that copper conductor one end and a C type aluminum frame (1) of the first concentric cable (3) weld together, copper conductor one end and the 2nd C type aluminum frame (2) of the second concentric cable (4) weld together, the metallic shield net of the first concentric cable (3) is unsettled near one end of a C type aluminum frame (1), the metallic shield net of the second concentric cable (4) is unsettled near one end of the 2nd C type aluminum frame (2), the other end of the other end of the metallic shield net of the first concentric cable (3) and the metallic shield net of the second concentric cable (4) is linked together by metallic shield net connecting line (9), three lines are drawn on the first concentric cable (3) with the second concentric cable (4), wherein A line is the other end of the first concentric cable (3) copper conductor, B line is the other end of the second concentric cable (4) copper conductor, O line is metallic shield net connecting line (9), electric capacity C1 is formed between A and O, electric capacity C2 is formed between B and O, material and the length of the first concentric cable 3 and the second concentric cable 4 should be completely the same, can select in 10 to 20 meters of length ranges, described digital electric capacitance measuring circuits turns digital signal circuit (11) by capacitance, single-chip microcomputer (12), subtraction circuit (13), biasing circuit (14), signal amplification circuit (15), SPI communication interface (16), single-chip microcomputer D/A converting circuit (17), voltage turns normalized current output circuit (18), singlechip serial communication circuit (19), RS485 serial output circuit (20), data storage circuitry (21), hardware watchdog circuit (22) and store zero point button (23) composition, the first measurement port that A line and capacitance turn digital signal circuit (11) is connected, the second measurement port that B line and capacitance turn digital signal circuit (11) is connected, the common port that O line and capacitance turn digital signal circuit (11) is connected, the value of electric capacity C1 and the value of electric capacity C2 turn digital signal circuit (11) by capacitance and gather and convert digital signal to, the digital signal of electric capacity C1 value and electric capacity C2 value is input to single-chip microcomputer (12) by the SPI communication interface 16 of single-chip microcomputer (12), simulating signal is converted to by the single-chip microcomputer D/A converting circuit (17) of single-chip microcomputer (12), respectively from DAC0 mouth and the output of DAC1 mouth of single-chip microcomputer D/A converting circuit (17), two paths of signals realizes differential wave through subtraction circuit (13) and exports, biasing circuit (14) zero-error to differential output signal corrects, realize on-line tuning at zero point, signal amplification circuit (15) amplifies adjusting later differential wave zero point, and signal output voltage scope is limited within 0 ~ 5V, by VOUT mouth outputting standard voltage signal, simultaneously voltage turns normalized current output circuit (18) standard voltage signal that VOUT mouth exports is converted to 4 ~ 20mA signal, by IOUT mouth outputting standard current signal, electric capacity C1 value after single-chip microcomputer (12) process is simultaneously communicated with RS485 serial output circuit (20) by the singlechip serial communication circuit (19) of single-chip microcomputer (12) with the digital signal of electric capacity C2 value, by the digital signal of SOUT mouth output capacitance C1 value and electric capacity C2 value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510442289.7A CN105136008B (en) | 2015-07-24 | 2015-07-24 | A kind of strip offset detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510442289.7A CN105136008B (en) | 2015-07-24 | 2015-07-24 | A kind of strip offset detecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105136008A true CN105136008A (en) | 2015-12-09 |
| CN105136008B CN105136008B (en) | 2018-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510442289.7A Expired - Fee Related CN105136008B (en) | 2015-07-24 | 2015-07-24 | A kind of strip offset detecting device |
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| Country | Link |
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| CN (1) | CN105136008B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612379A (en) * | 2018-12-29 | 2019-04-12 | 江苏长电科技股份有限公司 | Detection module, detection method and the transmitting device with the detection module |
| CN110207583A (en) * | 2019-07-02 | 2019-09-06 | 唐山迪安自动化设备有限公司 | Steel band position measurement sensor in acid tank |
| CN111721245A (en) * | 2020-06-30 | 2020-09-29 | 上海创功通讯技术有限公司 | Hot-pressing deviation detection equipment and detection method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998017966A1 (en) * | 1996-10-17 | 1998-04-30 | Philips Electronics N.V. | Device for indicating a position |
| CN1810400A (en) * | 2005-12-20 | 2006-08-02 | 太原理工大学 | Capacitance sensor type on-line steel band deviation detecting system |
| CN1920488A (en) * | 2006-09-14 | 2007-02-28 | 王牛 | Sensor with steel transfer deflection detection |
| CN101113934A (en) * | 2007-07-24 | 2008-01-30 | 天津天仪集团仪表有限公司 | Intelligent capacitance differential pressure cell and method |
| CN101210905A (en) * | 2007-12-21 | 2008-07-02 | 浙江大学 | Giant magnetoresistance eddy current probe with self-zero adjustment function |
| CN103604359A (en) * | 2013-11-26 | 2014-02-26 | 北京金自能源科技发展有限公司 | Relative-position detection method of band-like material |
-
2015
- 2015-07-24 CN CN201510442289.7A patent/CN105136008B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998017966A1 (en) * | 1996-10-17 | 1998-04-30 | Philips Electronics N.V. | Device for indicating a position |
| CN1810400A (en) * | 2005-12-20 | 2006-08-02 | 太原理工大学 | Capacitance sensor type on-line steel band deviation detecting system |
| CN1920488A (en) * | 2006-09-14 | 2007-02-28 | 王牛 | Sensor with steel transfer deflection detection |
| CN101113934A (en) * | 2007-07-24 | 2008-01-30 | 天津天仪集团仪表有限公司 | Intelligent capacitance differential pressure cell and method |
| CN101210905A (en) * | 2007-12-21 | 2008-07-02 | 浙江大学 | Giant magnetoresistance eddy current probe with self-zero adjustment function |
| CN103604359A (en) * | 2013-11-26 | 2014-02-26 | 北京金自能源科技发展有限公司 | Relative-position detection method of band-like material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109612379A (en) * | 2018-12-29 | 2019-04-12 | 江苏长电科技股份有限公司 | Detection module, detection method and the transmitting device with the detection module |
| CN110207583A (en) * | 2019-07-02 | 2019-09-06 | 唐山迪安自动化设备有限公司 | Steel band position measurement sensor in acid tank |
| CN111721245A (en) * | 2020-06-30 | 2020-09-29 | 上海创功通讯技术有限公司 | Hot-pressing deviation detection equipment and detection method |
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| CN105136008B (en) | 2018-01-09 |
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