CN1755320A - Instrument for detecting wall thickness of glass tube - Google Patents
Instrument for detecting wall thickness of glass tube Download PDFInfo
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- CN1755320A CN1755320A CN 200410081016 CN200410081016A CN1755320A CN 1755320 A CN1755320 A CN 1755320A CN 200410081016 CN200410081016 CN 200410081016 CN 200410081016 A CN200410081016 A CN 200410081016A CN 1755320 A CN1755320 A CN 1755320A
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- glass tube
- wall thickness
- instrument
- signal
- detecting wall
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Abstract
The invention discloses a glass pipe thickness detector which comprises a probe, a host machine, an output device and an interface, wherein the probe comprises a catalytic combustion detector and a semiconductor laser. It uses double light beam measurement; the driving circuit of the catalytic combustion detector includes a oscillation circuit, a frequency divider and a converter.
Description
Technical field
The present invention relates to a kind of detecting instrument, particularly a kind of instrument for detecting wall thickness of glass tube.
Background technology
Glass tube is mainly used in the making of medicinal glass bottle, and the external diameter of glass tube and wall thickness promptly are the external diameter and the wall thickness of medicinal glass bottle body, and there is standard-required in country to medicinal glass bottle.Therefore external diameter and wall thickness are the glass tube important parameters.Production of Glass producer has done better control and sorting by laser diameter measuring instrument etc. to the glass tube external diameter, but because of the online detection instrument of no wall thickness, and producer still rests on manually on (cutting off) glass tube end measurement state, and neither science wastes time and energy again.
Summary of the invention
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, a kind of instrument for detecting wall thickness of glass tube is provided.
The technical solution used in the present invention is: a kind of instrument for detecting wall thickness of glass tube, include detector, main frame, output device and interface, and main frame is connected with detector, output device and interface respectively.
Further, described detector includes charge-coupled device (line array CCD), semiconductor laser, catoptron, charge-coupled device driving and signal processing circuit.
Further, described detector is to adopt twin-beam to measure.
Further, the driving circuit of described charge-coupled device and signal processing circuit have oscillatory circuit, frequency divider and phase inverter.
According to technical scheme provided by the invention with respect to prior art, have following advantage: the present invention can make the important parameter wall thickness of fiberglass participate in sorting together as the external diameter value, raising is to the separation velocity of glass tube, and the quality of standard glass tube product reduces labor strength.
Description of drawings
Fig. 1 is an optical schematic diagram of the present invention;
Fig. 2 is a composition synoptic diagram of the present invention;
Fig. 3 is a detection junction composition of the present invention;
Fig. 4 is circuit theory diagrams of the present invention;
Fig. 5 is that CCD of the present invention drives and signal processing circuit figure;
Fig. 6 is pulse-scaling circuit figure of the present invention;
Fig. 7 is the circuit diagram of central processing unit of the present invention.
Illustrate:
1...... semiconductor laser 2...... semiconductor laser 3...... catoptron
4...... catoptron 5...... charge-coupled image sensor 6...... charge-coupled image sensor
7...... glass tube 8......CCD drives and signal processing circuit
9...... with the main frame connecting line
Embodiment
Below in conjunction with description of drawings the specific embodiment of the present invention.
Optical principle of the present invention:
As shown in Figure 1, the present invention utilizes the characteristics of the good directionality of laser, adopt semiconductor laser with the online glass tube of angle directive determined and with its bus quadrature, the displacement of bus reflection ray comes calculated wall thickness inside and outside the glass tube by measuring, and has realized noncontact, has measured at a high speed.Measure equation is as follows:
H＝D*(n
2-sin
2α)
1/2/sin2α
In the formula: H is a wall thickness of glass tube; D is the displacement of reflection ray;
α is the laser incident angle; N is a glass refraction.
After instrument was installed, the α angle was a fixed numbers, the inside and outside proportional relation of bus reflected light displacement H of visible wall thickness H and glass tube.Therefore, can calculate wall thickness of glass tube H by measuring D.
As shown in Figure 2, the present invention is shown by detector, main frame, large-size screen monitors and interface is formed, and main frame is connected with detector, output device and interface respectively.
As shown in Figure 4, circuit theory of the present invention:
The abbreviation of charge-coupled image sensor is CCD, and its effect is to change light signal into electric signal, is used for taking a picture and measuring.Be divided into two kinds of area array CCD and line array CCDs, mainly use line array CCD when being used to measure.
At first, form a stable signal, give counting circuit, and when each frame end, produce an interruption the signal process amplifying circuit and the shaping circuit of line array CCD output.Single-chip microcomputer is finished signals sampling and is carried out real-time operation, processing in interrupt routine, try to achieve this measuring point glass-tube wall thickness value, has deviation record, LCD demonstration and sorting control output simultaneously, thereby realizes the online non-contact detecting and the control of wall thickness of glass tube.
This instrument uses line array CCD, total pixel 2048,14 microns of pel spacings; The light-sensitive surface of two irradiate light to CCD arranged, then in the output signal of CCD, just export two electric impulse signals, the spacing between corresponding two light of the spacing between its peak A, the B.The spacing of measuring A, B by processing of circuit just can draw two number of picture elements between the light, and it is exactly two spacings between the light that this number of picture elements multiply by 14 microns.Through drawing the wall thickness value of glass tube after the formula conversion.
As shown in Figure 3, detector adopts two identical " 1 " font ray intersections that are close to symmetry in tested glass tube, and the glass tube same point is surveyed two values, is to design for overcoming the small not parallel influence to measurement of glass-tube surfaces externally and internally.
Equally, semiconductor laser 2 emission laser beams are to glass tube 7 surfaces, respectively reflect a light to catoptron 3 from the inside and outside wall of glass tube 7, reflex to CCD5 then, to represent these two light of glass tube 7 wall thickness to change electric impulse signal into through CCD5, send CCD to and drive and signal processing circuit 8, send main frame to through connecting line 9 again through handling later signal.
CCD as shown in Figure 5 drives and signal processing circuit:
The oscillatory circuit of forming by 4M crystal JZ and phase inverter U6D, U6E, the pulse signal of generation 4MHZ is sent into frequency divider U8B and is carried out frequency division, among the pulse signal U9 (programmable logic array PLD) with 4MHZ, 2MHZ, 1MHZ, 0.25MHZ, produce required drive signal RS, F1, the F2 of CCD, after the phase inverter amplification, give CCD.0.25MHZ pulse signal give frequency divider U7A simultaneously, through producing the synchronizing signal SH of the pulse signal of 1ms behind the frequency division once more as CCD.
The output signal of CCD (is example with one tunnel) CCD2 at first drives through triode Q2, enters the differentiating circuit of being made up of C5, R6, R5, and the signal behind the differential amplifies through operational amplifier U15A, enters comparer U16A and compares shaping.Benchmark voltage is provided with by R9, R10 dividing potential drop.The output of comparer is exactly the pulse signal of representing wall thickness of glass tube, and is last, sends this signal C1 to main frame and measure.
Another road ccd signal is handled with top identical.
What FC transmitted is synchronizing signal.
Pulse-scaling circuit as shown in Figure 6:
Comprise synchronizing signal FC and wall thickness pulse signal C1, C2 from CCD driving and the signal that signal processing circuit is sent to main frame.C1 and C2 carry out entering programmable logic array J5 behind the two divided-frequency through frequency divider J4A, J4B, and the FC signal is directly sent into J5.JZ is the crystal oscillator of 20MHZ, and the 20MHZ pulse signal of its output is sent into J5.Through producing 3 signals after the J5 processing, 20MHZ pulse signal, the 20MHZ pulse signal of the corresponding C1 deration of signal and the 20MHZ pulse signal of the corresponding C2 deration of signal of the corresponding FC deration of signal, these 3 pulse signals are sent into respectively among counting circuit J6A, J6B, J7A, J7B, J8A, J8B, J9A, J9B, J10A, J10B, J11A, the J11B, counted.The result of counting gives single-chip microcomputer and handles by J12, J13, J14, J15, J16, J17.
P1.5 counts previous frame according to carrying out zero clearing.
Central processing circuit as shown in Figure 7:
When each frame end, produce an interruption by W2C by the FC signal.Single-chip microcomputer passes through code translator U6 gating counting circuit in interrupt routine, finish signals sampling and carry out real-time operation, processing, try to achieve this measuring point glass-tube wall thickness value and deviation, on LCD, show, and store into simultaneously among the data-carrier store U7, be used for showing the change curve of wall thickness.Thereby realize the online non-contact detecting and the control of wall thickness of glass tube.Giant-screen provides online wall thickness value of remote demonstration or deviation.
The glass tube that pulls out from the glass kiln cuts into the identical glass tube of length with cutter, if will judge that the every glass tube that cuts off is certified products or unacceptable product, will judge the overproof situation of every glass tube, need sample to the number of cutting.By photoelectrical coupler W1 the number of cutting signal CUT is sent into single-chip microcomputer, just can find the starting point and the terminal point of every glass tube.To unacceptable product,, reject by V2 control GZH1 adhesive.
B1 is small-sized alarm, reminds when unacceptable product occurring.
Claims (4)
1, a kind of instrument for detecting wall thickness of glass tube is characterized in that: this instrument for detecting wall thickness of glass tube includes detector, main frame, output device and interface, and described detector, output device and interface are connected with main frame respectively.
2, instrument for detecting wall thickness of glass tube as claimed in claim 1 is characterized in that: described detector includes charge-coupled device, semiconductor laser, catoptron, charge-coupled device driving and signal processing circuit.
3, instrument for detecting wall thickness of glass tube as claimed in claim 1 or 2 is characterized in that: described detector is to adopt twin-beam to measure.
4, instrument for detecting wall thickness of glass tube as claimed in claim 2 is characterized in that: the driving of described charge-coupled device and signal processing circuit have oscillatory circuit, frequency divider and phase inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410081016 CN1755320A (en) | 2004-09-30 | 2004-09-30 | Instrument for detecting wall thickness of glass tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410081016 CN1755320A (en) | 2004-09-30 | 2004-09-30 | Instrument for detecting wall thickness of glass tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1755320A true CN1755320A (en) | 2006-04-05 |
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ID=36688758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410081016 Pending CN1755320A (en) | 2004-09-30 | 2004-09-30 | Instrument for detecting wall thickness of glass tube |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427933C (en) * | 2006-08-22 | 2008-10-22 | 中国科学院上海光学精密机械研究所 | Glass quality detecting instrument |
| CN103217120A (en) * | 2013-03-22 | 2013-07-24 | 浙江理工大学 | Laser thickness-measuring method and device |
| CN105091764A (en) * | 2015-09-06 | 2015-11-25 | 苏州南光电子科技有限公司 | Measurement method of laser and CCD-based glass thickness measurement system |
| CN105258645A (en) * | 2015-09-06 | 2016-01-20 | 苏州南光电子科技有限公司 | Glass thickness measurement system based on laser and CCD |
| CN110207601A (en) * | 2019-06-30 | 2019-09-06 | 连云港华源石英制品有限公司 | A kind of high-precision quartz pipe automatic checkout system and detection method |
| CN111537021A (en) * | 2020-04-26 | 2020-08-14 | 长飞光纤光缆股份有限公司 | Glass wall pipe measuring device |
-
2004
- 2004-09-30 CN CN 200410081016 patent/CN1755320A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427933C (en) * | 2006-08-22 | 2008-10-22 | 中国科学院上海光学精密机械研究所 | Glass quality detecting instrument |
| CN103217120A (en) * | 2013-03-22 | 2013-07-24 | 浙江理工大学 | Laser thickness-measuring method and device |
| CN103217120B (en) * | 2013-03-22 | 2016-03-09 | 浙江理工大学 | A kind of thickness measurement with laser method and device |
| CN105091764A (en) * | 2015-09-06 | 2015-11-25 | 苏州南光电子科技有限公司 | Measurement method of laser and CCD-based glass thickness measurement system |
| CN105258645A (en) * | 2015-09-06 | 2016-01-20 | 苏州南光电子科技有限公司 | Glass thickness measurement system based on laser and CCD |
| CN110207601A (en) * | 2019-06-30 | 2019-09-06 | 连云港华源石英制品有限公司 | A kind of high-precision quartz pipe automatic checkout system and detection method |
| CN111537021A (en) * | 2020-04-26 | 2020-08-14 | 长飞光纤光缆股份有限公司 | Glass wall pipe measuring device |
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