CN105606034A - Glass thickness detection apparatus and glass thickness detection method - Google Patents

Glass thickness detection apparatus and glass thickness detection method Download PDF

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Publication number
CN105606034A
CN105606034A CN201510671857.0A CN201510671857A CN105606034A CN 105606034 A CN105606034 A CN 105606034A CN 201510671857 A CN201510671857 A CN 201510671857A CN 105606034 A CN105606034 A CN 105606034A
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China
Prior art keywords
glass
thickness
tested
photoelectric detection
detection portion
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CN201510671857.0A
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Inventor
黄达泉
常俏
吴筱
张鑫
钟星辉
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Beijing Aoptek Scientific & Technical Co Ltd
Beijing Aoptek Scientific Co Ltd
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Beijing Aoptek Scientific & Technical Co Ltd
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Priority to CN201510671857.0A priority Critical patent/CN105606034A/en
Publication of CN105606034A publication Critical patent/CN105606034A/en
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Abstract

The invention provides a glass thickness detection apparatus. The apparatus comprises a shell, two light sources, a photoelectric detection portion and a glass thickness calculation portion, wherein the shell possesses a bottom surface portion which can be contacted with a detected glass surface, and the bottom surface portion is in a plane shape and light can pass through the bottom surface portion; the two light sources are oppositely arranged in the shell with a prescribed space and can emit light which is used for detection and is shot to the bottom surface portion; the photoelectric detection portion is formed by a plurality of photoelectric detection units which are arranged, is arranged in the shell and can receive reflected light from the detected glass; and the glass thickness calculation portion calculates a thickness parameter of the detected glass according to detection information output by the photoelectric detection portion. According to the structure, precision of glass thickness measurement is increased and thickness measurement precision of glass with a wedge angle is especially improved.

Description

A kind of thickness of glass checkout gear and thickness of glass detection method
Technical field
The present invention relates to field of optical measuring technologies, more specifically, relate to a kind of thickness of glass and detect dressPut and method.
Background technology
At present, mainly adopt the method for optical measurement to measure the thickness of glass, measuring method is essence not onlySpend highly, and can realize non-cpntact measurement. Existing for measuring the measuring method of thickness of glassIn be mainly the principle of utilizing refraction and the reflection of light, slant tested on glass with light beam, through glassLight beam after glass refraction is received by photodiode sensor, carries out computing obtain by computer or single-chip microcomputerThickness of glass value. The patent that for example application number is CN200920201105 discloses a kind of thickness of glass and has surveyedAmount instrument, the patent that application number is CN201010528877 discloses a kind of thickness of hollow glass and aluminium width of frameCheckout gear, the patent that application number is CN201220327620.2 disclose a kind of digital glass thickness gauge,Application number is that the patent of CN201310695005 discloses a kind of incoherent imaging glass thickness measuring method.
In actual production, as shown in Figure 1, float glass usually there will be the angle of wedge, causes same glassGlass in uneven thickness, two of glass air spots are capable. In addition, double glazing or three glass two chambeiesDouble glazing is in manufacturing process, and cavity is also easy to occur the angle of wedge.
Fig. 2 is the light path principle figure while representing to use existing measurer for thickness to measure thickness of glass,This, suppose that the upper and lower surface of tested glass is parallel to each other, and do not have the angle of wedge. As shown in Figure 2, existingSome thickness of glass checkout gears comprise a light source 201 and Photoelectric Detection parts 202, by 201 of light sourcesThe detection going out is used up after the upper surface of detected glass 203 and lower surface reflection, incides Photoelectric DetectionEach optical detecting unit of parts 202. If the refractive index of glass is that the incidence angle that n, detection are used up is i, inspectionSurvey use up through the position of the light outgoing of detected surface reflection on glass with through tested lower glass surface reflectionDistance between the position of light outgoing is Δ, the two flare spacing that Photoelectric Detection parts receive be Δ '.From geometrical relationship in figure, the thickness G of tested glass can represent with following formula 1.
[formula 1]
G = Δ 2 t a n [ arcsin ( sin i n ) ]
From optical principle, in the time that the upper and lower surface of tested glass is parallel to each other, two reflected light paths alsoParallel to each other, Δ '=Δ. Now, the thickness G of tested glass can represent with following formula 2.
[formula 2]
G = Δ ′ 2 t a n [ arcsin ( sin i n ) ]
Fig. 3 represents to use existing measurer for thickness in detect thickness direction, to have the glass of the angle of wedgeThickness time light path schematic diagram. Shown in Fig. 3, between the upper and lower surface due to glass, there is the angle of wedge, leadCause through the light path of surface on glass and lower surface reflection not parallel, two reflections that Photoelectric Detection parts receiveHot spot separation delta ' be less than the position Δ of two-way reverberation from glass outgoing, thus make the thickness of glass value that records inclined to one sideLittle.
In addition the patent that, application number is CN200910054824.6 discloses a kind of detection of thickness of glass and has establishedStandby and detection method. Although although the method adopts two laser instruments to measure, its measuring principleBased on the refraction of light. In the equipment and detection method providing in this patent, laser instrument and ccd detector divideNot in the both sides of glass to be measured, be difficult to accurately control between laser instrument and ccd detector and the two and treatSurvey the relative position between glass, may cause ccd detector and glass surface to be measured not parallel, fromAnd affect accuracy of measurement. And, because this method need to be placed in checkout gear by glass, therefore,Limit the scope of application of this checkout gear.
Summary of the invention
The present invention makes in order to solve the above-mentioned technical problem existing in prior art, and its object isThe precision that provides a kind of thickness of glass checkout gear and thickness of glass detection method to measure to improve glass, andAnd simplified measurement step.
A kind of thickness of glass checkout gear is provided according to an aspect of the present invention, and it comprises: housing,Have the bottom surface sections that can contact with tested glass surface, described bottom surface sections is flat shape and can sees through lightLine; Two light sources are arranged on the inside of described housing oppositely across prescribed distance, can send directiveThe detection of described bottom surface sections is used up; Photoelectric Detection portion, is arranged and is formed by multiple optical detecting units, is arranged onThe inside of described housing, can receive the reverberation from described tested glass; Thickness of glass calculating part, rootAccording to the detection information by the output of described Photoelectric Detection portion, calculate the thickness parameter of described tested glass.
In addition, preferably, be provided with slit in the bottom surface sections of described housing.
In addition, preferably, be provided with optical filter at the light incident side of described Photoelectric Detection portion, for filteringVeiling glare.
Moreover, preferably, described thickness of glass calculating part send respectively according to described two light sources described inThe detection information that described tested glass back reflection obtains to described Photoelectric Detection portion that is irradiated to is used up in detection,Calculate respectively the thickness parameter of tested glass, and using the mean value of these two thickness parameters as final glassThe thickness parameter of glass.
In addition, preferably, the bottom surface sections of described Photoelectric Detection portion and described housing be arranged in parallel.
In addition, preferably, described Photoelectric Detection portion comprises two photoelectricity testing parts, described two photoelectricityThe light entrance face of detection means is towards rightabout, and, described two photoelectricity testing parts and described shellThe bottom surface sections of body vertically arranges.
In addition, preferably, when the catoptrical significant wave peak number detecting when described Photoelectric Detection portion is 2,Being judged as tested glass is monolithic glass, and significant wave peak number is 4 o'clock, and being judged as tested glass is in two glassEmpty glass, significant wave peak number is 6 o'clock, being judged as tested glass is three glass two chamber double glazings.
In addition, the present invention also provides a kind of thickness of glass detection method, and it comprises the following steps: by glassThe bottom surface sections of thickness detection apparatus is placed on the surface of tested glass, makes the first light source and secondary light source respectivelyLaunch to detect and use up; Photoelectric Detection portion receives the reverberation by each surface reflection of described tested glass;Thickness of glass calculating part, according to the Output rusults of described Photoelectric Detection portion, calculates each thickness of this tested glassDetected value; And by the thickness detected value based on the first light source and the thickness detected value based on secondary light sourceMean value, as the final detected value of each thickness parameter of this tested glass.
In addition, preferably, in the step of each thickness detected value of described this tested glass of calculating, work as instituteStating the catoptrical significant wave peak number that Photoelectric Detection portion detects is 2 o'clock, and being judged as tested glass is monolithicGlass, significant wave peak number is 4 o'clock, and being judged as tested glass is two glass double glazings, and significant wave peak number is 6Time, being judged as tested glass is three glass two chamber double glazings.
According to invention as above, can effectively reduce the mistake that the glass angle of wedge causes thickness measure resultPoor, thus the degree of accuracy while measuring thickness of glass improved.
Brief description of the drawings
By reference to the content of following detailed description of the invention and claims and by reference to the accompanying drawings, the present inventionOther object and result will more understand and should be readily appreciated that. In the accompanying drawings:
Fig. 1 is the schematic diagram that has the glass of the angle of wedge;
Fig. 2 is the schematic diagram while representing that existing measurer for thickness is measured the thickness of the parallel glass in surface;
Fig. 3 is the signal while representing that existing measurer for thickness meter is worn the thickness of glass of the angle of wedgeFigure;
Fig. 4 is the structural representation that represents the thickness of glass checkout gear the present invention relates to;
Fig. 5 represents to use the thickness of glass checkout gear measurement the present invention relates to have the thickness of angle of wedge glassTime light path schematic diagram;
Fig. 6 is that explanation is used the measurement of the thickness of glass checkout gear measurement the present invention relates to angle of wedge glassThe schematic diagram of example;
Fig. 7 uses the thickness of glass checkout gear the present invention relates to measure showing of three glass two chamber double glazingsIntention;
Fig. 8 is the light path that detection that the first light source while representing to measure three glass two chamber double glazings penetrates is used upSchematic diagram;
Fig. 9 is the structural representation of another embodiment of the thickness of glass checkout gear that the present invention relates to;
Figure 10 is the flow chart of the thickness of glass detection method that the present invention relates to.
Detailed description of the invention
In the following description, for purposes of illustration, for complete to one or more embodiment is providedFoliation solution, has set forth many details. But, clearly, can there is no these details yetSituation under realize these embodiment. In other example, one or more embodiment for convenience of description,Known structure and equipment illustrate with the form of block diagram.
Come below with reference to accompanying drawings each embodiment according to the present invention to be described in detail.
Fig. 4 is the structural representation that represents the thickness of glass checkout gear the present invention relates to. As shown in Figure 4,The thickness of glass checkout gear the present invention relates to comprises: housing 400, and for accommodating described thickness of glass inspectionEach component parts of device, has the bottom surface sections 405 that can contact with tested glass surface, this bottom surface sections405 is flat shape and can transmitted light; The first light source 401 and secondary light source 402, oppositely acrossPrescribed distance is arranged on the inside of described housing 400, can send the detection of bottom surface sections described in directive and use up;Photoelectric Detection portion 403, is arranged and is formed by multiple optical detecting units, is arranged on the inside of described housing, can connectReceive the reverberation from described tested glass; And not shown thickness of glass calculating part, according to by describedThe detection information of Photoelectric Detection portion output, calculates the thickness parameter of described tested glass. At this, described lightElectro-detection portion 403 for example can be used photodiode line array sensor, also can use area array CCD devicePart.
Described the first light source 401 and secondary light source 402 can be LASER Light Sources, preferably narrow band laser.Due to the directionality of LASER Light Source, monochromaticjty is good, it is hereby ensured the accuracy of measurement. But the present inventionBe not limited to this, also can adopt the incoherent light source that coordinates colimated light system.
In addition, on described shell 400, display unit can also be set, for showing thickness of glass parameterEtc. various information.
In addition, in the bottom surface sections 405 of housing 101, slit can also be set, by described the first light source 401The light sending with secondary light source 402 shines tested glass after by this slit, through tested glass-reflectedReverberation also by inciding Photoelectric Detection portion 403 after this slit.
In addition, this thickness of glass checkout gear can also comprise diaphragm, and this diaphragm is used for covering that this is narrowSeam. Preferably, can plated film on diaphragm, for filtering owing to repeatedly reflecting and reflecting cause assortedAstigmatism and surround lighting, to improve certainty of measurement. In addition, diaphragm can also form together with housing 400The space of sealing, thus can prevent that dust, aqueous vapor etc. from entering thickness of glass checkout gear inside, to protectProtect the first light source 401, secondary light source 402, Photoelectric Detection portion 403 etc.
In addition, this thickness of glass checkout gear can also comprise optical filter, and this optical filter is arranged on to detect and usesPosition, arbitrary place in the light path of light, detects and uses up (comprising reverberation) in addition spuious for crossing filteringLight. For example, optical filter can be bandpass filter, and it allows the light of specific wavelength to pass through, filtering otherThe light of wavelength, can be also gray scale sheet, reduces the reception light intensity of Photoelectric Detection portion, and filtering intensityLow veiling glare.
In this thickness of glass checkout gear, at the bottom of sending directive by the first light source 401 and secondary light source 402The detection of face is used up, and this two-way detects to be used up respectively by the tested glass of slit directive of bottom surface sections 405406. The part that described detection is used up is after the upper surface reflection of detected glass 406, via bottom surface sections405 slit incides described Photoelectric Detection portion 403, remainder the upper surface of tested glass reflect intoEnter tested inside glass, afterwards a part detect use up after the lower surface reflection of tested glass 406 through byThe upper surface of tested glass 406 and bottom surface sections 405 incide described Photoelectric Detection portion 403 again. Like this, byThe detection that the first light source 401 penetrates is used up respectively in the upper surface of tested glass 406 and lower surface reflectionTwo-way reverberation L1、L2, and the detection of being penetrated by secondary light source 402 is used up respectively at tested glass 406Upper surface and the two-way reverberation L of lower surface reflection3、L4, amount to four road reverberation and incide photoelectricity inspectionIn the different optical detecting units of survey portion 403.
Described Photoelectric Detection portion 403, according to the light testing result of its optical detecting unit, is calculated to thickness of glassPortion's output represents reverberation L1With L2Between distance and reverberation L3With L4Between the detection information of distance.Described thickness of glass calculating part, according to the output signal of described Photoelectric Detection portion 403, can calculate described quiltSurvey the thickness parameter of glass.
Fig. 5 represents to use the thickness of glass checkout gear measurement the present invention relates to have the thickness of angle of wedge glassTime light path schematic diagram. In this case, while using respectively the first light source and secondary light source to measure and Fig. 3Shown glass has the measurement in the situation of the angle of wedge the same, there will be the measure error being caused by wedge angle. ToolBody ground, as shown in Figure 5, in the light path in left side, according to geometrical relationship, Δ1'=Δ1-H×(tani1-tani1'),Wherein, i1The incidence angle of the light that on the left of being, light path is sent (from reflection theorem, is passed through the upper of tested glassAngle of reflection after surface reflection is also i1),i1' be the lower surface of the left side light that sends of light source through tested glassRefraction angle after reflection in the time that refraction occurs the upper surface of tested glass, Δ1That left side incident light is at tested glassThe reflection position of the upper surface reflection of glass with after tested lower glass surface reflection from tested glass tableDistance between the outgoing position of face outgoing, Δ1' for left side incident light through the upper surface of tested glass and underAfter surface reflection, arrive the distance of Photoelectric Detection portion. Obviously, Δ1'<Δ1
Utilize above-mentioned formula 1 known, the thickness of glass G that left side light path records1For:
G 1 = &Delta; 1 &prime; 2 t a n &lsqb; arcsin ( sini 1 n ) &rsqb; .
Wherein, the refractive index that n is tested glass. Therefore the thickness G that, left side light path records1Be less than glassActual (real) thickness.
Further, according to right side light path as shown in Figure 5, according to geometrical relationship, can obtainΔ2'=Δ2+H×(tani2'-tani2), wherein, i2The incidence angle of the light that on the left of being, light path is sent is (fixed by reflectionManage knownly, the angle of reflection after the upper surface reflection of tested glass is also i2),i2' be that left side light source sendsLight refraction angle in the time that refraction occurs the upper surface of tested glass after the lower surface reflection of tested glass,Δ2The reflection position and process tested lower glass surface of left side incident light in the upper surface reflection of tested glassAfter reflection from the distance between the outgoing position of the upper surface outgoing of tested glass, Δ2' be left side incident light warpCross upper surface and the rear distance that arrives Photoelectric Detection portion of lower surface reflection of tested glass.
Utilize above-mentioned formula 1 known, the thickness of glass G recording in right side light path2For:
G 2 = &Delta; 2 &prime; 2 t a n &lsqb; arcsin ( sini 2 n ) &rsqb; .
Hence one can see that, the thickness G recording in right side light path2Be greater than the actual (real) thickness of glass.
According to the present invention, the thickness G of tested glass is set as:That is to say the present inventionCalculate the thickness of tested glass according to following formula 2.
[formula 2]
G = 1 2 { &Delta; 1 &prime; 2 t a n &lsqb; arcsin ( sini 1 n ) &rsqb; + &Delta; 2 &prime; 2 t a n &lsqb; arcsin ( sini 2 n ) &rsqb; } .
Because the wedge angle of glass is conventionally very little, the departure (less than normal) of the thickness of glass recording in left side light pathAll very little with the departure (bigger than normal) of the thickness of glass recording in right side light path, and very close. Therefore,By using the mean value of the thickness of glass recording in left side light path and right side light path as measured position placeWhole thickness of glass, has improved the certainty of measurement of thickness of glass effectively. Especially, when the first light source 501The incidence angle i that the detection of sending is used up1The incidence angle i that the detection of sending with secondary light source 502 is used up2When identical,Because wedge angle is very little, can be similar to and think i1'=i2'. In this case, can be held by above mathematical expressionBe easy to get, Δ1'+Δ2'≈Δ12. Therefore,
G = 1 2 { &Delta; 1 &prime; 2 t a n &lsqb; arcsin ( sini 1 n ) &rsqb; + &Delta; 2 &prime; 2 t a n &lsqb; arcsin ( sini 2 n ) &rsqb; } &ap; &Delta; 1 2 t a n &lsqb; arcsin ( sini 1 n ) &rsqb; .
In order to illustrate according to the measurement effect of thickness of glass checkout gear of the present invention, below will provide onePractical measuring examples. Fig. 6 is that explanation is used the thickness of glass checkout gear the present invention relates to measure band angle of wedge glassThe schematic diagram of practical measuring examples. As shown in Figure 6, when using thickness of glass checkout gear of the present invention to measureWhen any thickness of certain of tested glass, use up by two detections the two test point end thickness that record and be respectivelyG1=6.012mm and G2=5.983mm, therefore, the final thickness detected value G of this position is:
G = G 1 + G 2 2 = 5.9975 m m .
Then this place's thickness of glass that, uses the thickness of glass detecting instrument of standard to measure is G0=6mm,G1And G2With G0Difference be respectively:
δ1=G1-G0=6.012mm-6mm=0.012mm
δ2=G2-G0=5.983mm-6mm=0.017mm
And the final thickness measured value that thickness of glass checkout gear according to the present invention obtains is: G = G 1 + G 2 2 = 5.9975 m m .
The final detected value G of thickness and the actual (real) thickness G of tested glass0Difference be:
δ=G-G0=-0.0025mm
Obviously can find out δ and δ from result of calculation above1、δ2Compare an order of magnitude little. Therefore,Thickness of glass checkout gear of the present invention, owing to having used two light paths to measure thickness of glass, can significantly subtractLittle measure error, can significantly improve certainty of measurement.
In like manner, thickness of glass checkout gear of the present invention is measured cavity double glazing or three glass of the angle of wedgeTwo chamber double glazings, also can reduce the impact that angle of wedge centering cavity thickness is measured, and improve certainty of measurement.
Thickness of glass checkout gear of the present invention can be measured the thickness of three glass two chamber double glazings.
Fig. 7 uses the thickness of glass checkout gear the present invention relates to measure showing of three glass two chamber double glazingsIntention. As shown in Figure 7, now, the detection that the first light source 103 and secondary light source 104 send is used up,Produce respectively the 6 road reverberation that incide Photoelectric Detection portion 106. Photoelectric Detection portion 106 and not shownThickness of glass calculating part can, according to described 6 road reverberation, calculate three layers of three glass two chamber double glazingsEach thickness of glass and two-layer cavity. Then, by each thickness detected value and base based on the first light source 103Average respectively as each of three glass two chamber double glazings in each thickness detected value of secondary light source 104The measurement result of thickness.
Fig. 8 is the light path that detection that the first light source while representing to measure three glass two chamber double glazings penetrates is used upSchematic diagram. If the incidence angle with respect to tested surface on glass is used up in the detection that the first light source 801 sendsFor i, the refractive index of tested glass is n, and the optical detecting unit distance of Photoelectric Detection portion 803 is tested on glassThe height on surface is H, and the centre distance between each optical detecting unit of described Photoelectric Detection portion 803 is α.
According to geometric optics knowledge, the one-tenth-value thickness 1/10 G of the ground floor glass 810 in these three glass, two chamber double glazings1、The one-tenth-value thickness 1/10 G of second layer glass 8122, triplex glass 814 one-tenth-value thickness 1/10 G3Be respectively:
G 1 = ( P 2 - P 1 ) &times; &alpha; 2 &times; t a n &lsqb; arcsin ( sin i n ) &rsqb;
G 2 = ( P 4 - P 3 ) &times; &alpha; 2 &times; t a n &lsqb; arcsin ( sin i n ) &rsqb;
G 3 = ( P 6 - P 5 ) &times; &alpha; 2 &times; t a n &lsqb; arcsin ( sin i n ) &rsqb;
Wherein, P1、P2Be respectively the upper surface of ground floor glass and the light arrival photoelectricity inspection of lower surface reflectionThe optical detecting unit sequence number of survey portion 803. P3、P4Be respectively upper surface and the lower surface reflection of second layer glassLight arrive the optical detecting unit sequence number of Photoelectric Detection portion 803. P5、P6Be respectively the upper of triplex glassThe light of surface and lower surface reflection arrives the optical detecting unit sequence number of Photoelectric Detection portion 803. Detected by lightThe product of the poor centre distance α with optical detecting unit of sequence number between unit can calculate two-way light and arriveDistance (for example, (P when optical detection part 8032-P1) × α is that upper surface and the upper surface of ground floor glass is anti-Distance when the two-way light of penetrating arrives Photoelectric Detection portion 803). Similarly, in three glass two chamber double glazingsThe thickness A of the first air layer 8111Thickness A with the second air layer 8132Be respectively:
A 1 = ( P 3 - P 2 ) &times; &alpha; 2 &times; tan i
A 2 = ( P 5 - P 4 ) &times; &alpha; 2 &times; tan i
Utilize reverberation that detection that secondary light source sends is used up to calculate each thickness of three glass two chamber double glazingsThe computational methods of value are also basic identical, omit its detailed description at this.
Fig. 9 is the structural representation of another embodiment of the thickness of glass checkout gear that the present invention relates to.
In this embodiment, this Photoelectric Detection portion is arranged perpendicular to the surface of tested glass 905, and toolStandby two reverberation receiving planes that arrange towards rightabout. Or, two Photoelectric Detection portions can be set903,904, the light receiving surface of these two Photoelectric Detection portions 903,904 is towards the opposite, and receives respectivelyDetection from the first light source 901 and secondary light source 902 is used up. Known according to optical principle, so verticalNogata, to the Photoelectric Detection portion arranging, can, according to catoptrical incoming position, calculate tested glass equallyEach thickness of glass. Concrete thickness of glass computing formula, no longer repeats to discuss at this.
Figure 10 is the flow chart of the thickness of glass detection method that the present invention relates to. Below, detailed with reference to accompanying drawingEach step of this thickness of glass detection method is described.
At step S11, the bottom surface sections of thickness of glass checkout gear is placed on to the surface of tested glass, makeOne light source and secondary light source are launched respectively detection and are used up.
At step S12, Photoelectric Detection portion receives the reverberation by each surface reflection of described tested glass.
At step S13, thickness of glass calculating part, according to the Output rusults of described Photoelectric Detection portion, calculates this quiltSurvey each thickness detected value of glass.
At step S14, by the thickness detected value based on the first light source and the thickness detected value based on secondary light sourceMean value, as the final detected value of each thickness parameter of this tested glass.
In addition can also comprise, the step of the kind of determining tested glass at step S13. , when describedThe catoptrical significant wave peak number that Photoelectric Detection portion detects is 2 o'clock, and being judged as tested glass is monolithic glassGlass, significant wave peak number is 4 o'clock, and being judged as tested glass is two glass double glazings, and significant wave peak number is 6Time, being judged as tested glass is three glass two chamber double glazings. According to the tested glass kind of determining as mentioned aboveClass, can detect each one-tenth-value thickness 1/10 of tested glass more accurately.
In addition, the utilizing emitted light of the first light source and secondary light source can be accomplished in several ways, for example, theOne light source and secondary light source are drawn from same light source by optical fiber. As mentioned above, by this set, canOnly to use a light source to reach same measurement effect. Therefore, can reduce this glass of the present invention thickThe cost of degree checkout gear.
In addition, in the present invention, although by the thickness detected value recording respectively based on first, second light sourceBe averaged and as final thickness, but do not limit therewith, also can use other optimized algorithm and according to thisThe thickness detected value of two-way light source, obtains final thickness parameter.
And although be provided with two light sources in the present invention, the light source that greater number also can be set is usedIn thickness measure.
Although disclosed content shows exemplary embodiment of the present invention above, it should be noted thatDo not deviate under the prerequisite of scope of claim restriction, can carry out multiple change and amendment. According to hereFunction, step and/or the action of the claim to a method of the inventive embodiments of describing need be with any specific not suitableOrder is carried out. In addition, although element of the present invention can, with individual formal description or requirement, also canImagination has multiple elements, unless be clearly restricted to individual element.

Claims (8)

1. a thickness of glass checkout gear, is characterized in that, comprising:
Housing, has the bottom surface sections that can contact with tested glass surface, and described bottom surface sections is flat shapeAnd can transmitted light;
Two light sources are arranged on the inside of described housing oppositely across prescribed distance, can send directiveThe detection of described bottom surface sections is used up;
Photoelectric Detection portion, is arranged and is formed by multiple optical detecting units, is arranged on the inside of described housing, canReceive the reverberation from described tested glass;
Thickness of glass calculating part, according to the detection information by the output of described Photoelectric Detection portion, calculates described quiltSurvey the thickness parameter of glass.
2. thickness of glass checkout gear according to claim 1, is characterized in that,
Bottom surface sections at described housing is provided with slit.
3. thickness of glass checkout gear according to claim 1, is characterized in that,
Light incident side in described Photoelectric Detection portion is provided with optical filter, for filtering veiling glare.
4. thickness of glass checkout gear according to claim 1, is characterized in that,
The described detection that described thickness of glass calculating part sends respectively according to described two light sources is used up and is irradiated toThe detection information that described tested glass back reflection obtains to described Photoelectric Detection portion, calculates respectively tested glassThe thickness parameter of glass, and thickness parameter using the mean value of these two thickness parameters as final glass.
5. thickness of glass checkout gear according to claim 1, is characterized in that,
The bottom surface sections of described Photoelectric Detection portion and described housing be arranged in parallel.
6. thickness of glass checkout gear according to claim 1, is characterized in that,
When the catoptrical significant wave peak number detecting when described Photoelectric Detection portion is 2, be judged as tested glassGlass is monolithic glass, and significant wave peak number is 4 o'clock, and being judged as tested glass is two glass double glazings, effectivelyCrest number is 6 o'clock, and being judged as tested glass is three glass two chamber double glazings.
7. a thickness of glass detection method, is characterized in that, comprises the following steps:
The bottom surface sections of thickness of glass checkout gear is placed on to the surface of tested glass, makes the first light source andTwo light sources are launched respectively detection and are used up;
Photoelectric Detection portion receives the reverberation by each surface reflection of described tested glass;
Thickness of glass calculating part, according to the Output rusults of described Photoelectric Detection portion, calculates the each of this tested glassThickness detected value; And
By the mean value of the thickness detected value based on the first light source and the thickness detected value based on secondary light source,As the final detected value of each thickness parameter of this tested glass.
8. thickness of glass detection method according to claim 7, is characterized in that,
In the step of each thickness detected value of described this tested glass of calculating, when the inspection of described Photoelectric Detection portionThe catoptrical significant wave peak number measuring is 2 o'clock, and being judged as tested glass is monolithic glass, Valid peakNumber is 4 o'clock, is judged as tested glass and is two glass double glazings, and significant wave peak number is 6 o'clock, be judged as bySurveying glass is three glass two chamber double glazings.
CN201510671857.0A 2015-10-16 2015-10-16 Glass thickness detection apparatus and glass thickness detection method Pending CN105606034A (en)

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN107143783A (en) * 2017-06-30 2017-09-08 易视智瞳科技(深圳)有限公司 A kind of light supply apparatus, glue point thickness detecting system and detection method
CN110006350A (en) * 2018-09-19 2019-07-12 永康市巴九灵科技有限公司 Thickness measure platform based on radiating laser beams
CN117213394A (en) * 2023-09-15 2023-12-12 昆山迈致治具科技有限公司 Glass detection device and glass detection method

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CN202676139U (en) * 2012-07-06 2013-01-16 深圳市林上科技有限公司 Digital glass thickness gauge
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CN2349537Y (en) * 1998-12-29 1999-11-17 西安交通大学 Laser on line pachometer
CN1894554A (en) * 2004-03-03 2007-01-10 伊斯拉表面视觉有限公司 Device and method for measuring the thickness of a transparent sample
CN201548206U (en) * 2009-11-26 2010-08-11 周才扬 Glass thickness measuring instrument
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Publication number Priority date Publication date Assignee Title
CN107143783A (en) * 2017-06-30 2017-09-08 易视智瞳科技(深圳)有限公司 A kind of light supply apparatus, glue point thickness detecting system and detection method
CN110006350A (en) * 2018-09-19 2019-07-12 永康市巴九灵科技有限公司 Thickness measure platform based on radiating laser beams
CN117213394A (en) * 2023-09-15 2023-12-12 昆山迈致治具科技有限公司 Glass detection device and glass detection method

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