CN101275919A - Automatic optical detector - Google Patents
Automatic optical detector Download PDFInfo
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- CN101275919A CN101275919A CNA2007100207666A CN200710020766A CN101275919A CN 101275919 A CN101275919 A CN 101275919A CN A2007100207666 A CNA2007100207666 A CN A2007100207666A CN 200710020766 A CN200710020766 A CN 200710020766A CN 101275919 A CN101275919 A CN 101275919A
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- reflected light
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- Length Measuring Devices By Optical Means (AREA)
Abstract
An automatic optical detector is used for detecting whether the product component is short of accessory or omits the decorating technique and namely the coating is different from the expectation. The device comprises a light source, a light detection probe which receives the light emitted from the light source and projects to the component, the accessory or the surface of the coating and receives the reflected light; a light amplification unit which amplifies the power of the reflected light; a photoelectric converting unit which converts the reflected light signal after power amplification to an electrical signal reflecting the energy value of the reflected light; a comparison unit which compares the energy value of the reflected light with the energy value of a standard reflected light and outputs an alarm signal when the absolute value of the difference value between the energy value of the reflected light and the energy value of the standard reflected light exceeds a scheduled error; an alarm unit which sends out the alarm information when excited by the alarm signal. The energy difference of the reflected light generated by the reflection surface with different height and light absorption characteristic is used for determine whether the product component is short of accessory or omits the decorating technique. The error determination rate is low and the speed is high.
Description
[technical field]
The relevant a kind of pick-up unit of the present invention, especially a kind of optical detection apparatus that utilizes reflection of light Characteristics Detection product component whether to occur lacking part or omit decoration technology.
[background technology]
Now, related process such as most electronic product casings need spray, printing, gold stamping, radium carving, assembling, if adopt each case member of visual examination whether to pass through the processing of all process steps, be easy to make testing staff's visual fatigue, and then cause part leakage product processed to enter subsequent processing; If adopt image detecting system to detect, be about to the view data input computing machine of standardized product, absorb the image of arbitrary product that has machined then by shooting part, image with this image and above-mentioned standardized product compares again, and then judge whether these parts exist the situation of leaking processing, though this method can detect the cost height with leaking processing component, detection speed is slow, can't satisfy the production needs.
Leak processing and generally comprise two kinds of situations: the one, small part (as screw, decorative panel etc.) assembling is incomplete, then piece surface and case surface tool difference in height, light reflexes to conplane energy difference after being projeced into this piece surface or this case surface again; The 2nd, all or part of surface decoration tech of gaps and omissions (as spraying, printing, gold stamping etc.) step has then been decorated the zone of finishing and has been compared other field color or paint ingredient difference, absorption spectrum difference, then catoptrical energy difference.After all, can judge that whether the part assembling is finished and whether decoration technology is finished by energy of reflection light.
In view of above-mentioned, be necessary to develop a kind of energy of reflection light value and detect the device whether case member occurs lacking part or omit decoration technology.
[summary of the invention]
Therefore, purpose of the present invention promptly provides a kind of automatic optical detection device, utilize energy of reflection light value detection part part or holiday or whole decoration technology whether to occur lacking, in order to solve human eye identification out of true and the slow shortcoming of image comparison recognition speed in the prior art.
For reaching above-mentioned purpose, the invention provides a kind of automatic optical detection device, be used for whether the testing product parts lack part or the omission decoration technology is that coating is different with expectation, this device comprises a standard reflection luminous energy value storer, in order to storage standards energy of reflection light value; One light source; One smooth detection probe receives the light that above-mentioned light source sends and is projected to these parts or part or coating surface and receive reflected light; One Optical Amplifier Unit couples the output terminal of described smooth detection probe, amplifies above-mentioned reflected optical power; One photoelectric conversion unit connects the output terminal of this Optical Amplifier Unit, and the reflected light signal of changing behind the above-mentioned amplifying power is the electric signal of expression energy of reflection light value; One comparing unit, the output terminal of above-mentioned photoelectric conversion unit and above-mentioned standard reflection luminous energy value storer is coupled respectively, in order to the energy of reflection light value of relatively this photoelectric conversion unit output and the standard reflection luminous energy value in this standard reflection luminous energy value storer, and when exceeding a predictive error, the absolute difference of this energy of reflection light value and this standard reflection luminous energy value exports an alarm signal; One warns the unit, couples the output terminal of this comparing unit, is subjected to the excitation of above-mentioned alarm signal to send information warning.
Compared with prior art, the difference that the present invention utilizes incident light to be projeced into the energy of reflection light that reflecting surface produced of differing heights and optical absorption property judges whether to lack part or omits decoration technology, not only False Rate is low, speed is fast, and in actual applications, can or decorate point at each assembling point many circuits are set, and cooperating different localization tools to detect assembling or decoration situation at every, range of application is very extensive.
[description of drawings]
Fig. 1 is the composition frame chart of automatic optical detection device of the present invention.
[embodiment]
Consult Fig. 1, automatic optical detection device of the present invention is used for detection part, especially whether the electronic product shell parts leak processing, promptly lack small part or omit decoration technology (as spraying, printing, gold stamping etc.), this device comprises a light source 1, the light that this light source 1 sends is projected to this parts 8 through the light transmitting terminal 21 of a smooth detection probe 2, part 81 or coating 82 surfaces, reflected light enters one in order to amplify the Optical Amplifier Unit 3 of reflected optical power through the optical receiving end 22 of this light detection probe 2, the output terminal of this Optical Amplifier Unit 3 coupling one is the input end of the photoelectric conversion unit 4 of the electric signal of expression energy of reflection light value in order to the reflected light signal of changing behind the above-mentioned amplifying power, and the output terminal of this photoelectric conversion unit 4 couples an input end of a comparing unit 5, another input end of this comparing unit 5 also couples a standard reflection luminous energy value storer 6, in this standard reflection luminous energy value storer 6 respectively storage decorate when finishing or the part assembling when finishing incident light be projeced into the standard reflection luminous energy value on these coating 82 surfaces or part 81 surfaces, this comparing unit 5 is in order to the energy of reflection light value of relatively these photoelectric conversion unit 4 outputs and the standard reflection luminous energy value in this standard reflection luminous energy value storer 6, and this comparing unit 5 outputs one alarm signal when the absolute difference of this energy of reflection light value and this standard reflection luminous energy value exceeds a predictive error, and the output terminal of this comparing unit 5 connects a caution unit 7, and this caution unit 7 is subjected to the excitation of above-mentioned alarm signal to send the information warning prompting to lack part or omission decoration technology.
Above predictive error can be set up on their own by the user.
Below introduce principle of work of the present invention in detail: when the incident light that light source 1 sends is projeced into parts 8, part 81 or coating 82 surfaces through the light input end 21 of light detection probe 2, angle between incident ray and this parts 8, part 81 or coating 82 surfaces (being reflecting surface) less than but near 90 °, then reflection ray and incident ray also are minimum angle, send cable with this light detection probe 2 in the present embodiment by insulation and non-interfering light as light transmitting terminal 21 and the structure formed as the light-receiving cable of optical receiving end 22 fits like a glove.Because catoptrical luminous power is very little so that be not enough to encourage photoelectric conversion unit 4, therefore this reflected light signal exports photoelectric conversion unit 4 to again after the action of the amplifying optical signals power of Optical Amplifier Unit 3, this photoelectric conversion unit 4 is in order to quantize the reflected light signal behind this amplifying power, then this reflected light signal is converted to the electric signal of expression energy of reflection light value, when receiving this electric signal and transfer the standard reflection luminous energy value that sets in advance in the standard reflection luminous energy value storer 6, comparing unit 5 compares, this standard reflection luminous energy value comprises two kinds of situations: one, for adding after the test energy of reflection light value under two kinds of situations and the reference value of the gained of averaging not decorating or decorate to finish respectively, when comparing unit 5 receives the energy of reflection light value of photoelectric conversion unit 4 output and the absolute difference of standard reflection luminous energy value is no more than a predictive error value, represent that then reflecting surface is the coating of presetting 82, and the difference of getting rid of these coating 82 surface attachments, the energy of reflection light value that receives photoelectric conversion unit 4 output when comparing unit 5 and the absolute difference of standard reflection luminous energy value are above a predictive error value, then represent the non-coating 82 of reflecting surface for presetting, and be parts 8 surface or other coatings, and then this comparing unit 5 outputs one alarm signal gives caution unit 7, and this caution unit 7 is with sound, the mode of one of light or both combinations points out these parts 8 decoration technologys not finish; They are two years old, for respectively at part unassembled or assembling finish under two kinds of situations and to add after the test energy of reflection light value and the reference value of the gained of averaging, when comparing unit 5 receives the energy of reflection light value of photoelectric conversion unit 4 output and the absolute difference of standard reflection luminous energy value is no more than a predictive error value, represent that then reflecting surface is positioned at part 81 near surfaces, and get rid of part 81 differences in height that fastening dynamics difference is brought, be that part 81 assemblings are finished, the energy of reflection light value that receives photoelectric conversion unit 4 output when comparing unit 5 and the absolute difference of standard reflection luminous energy value are above a predictive error value, represent that then reflecting surface is positioned near the parts 8, and then this comparing unit 5 outputs one alarm signal gives caution unit 7, and this caution unit 7 is with sound, one of mode of light or both combinations prompting part 81 is unassembled.
Claims (5)
1. an automatic optical detection device is used for whether detection part lacks part or the omission decoration technology is that coating is different with expectation, it is characterized in that: comprise
One standard reflection luminous energy value storer is in order to storage standards energy of reflection light value;
One light source;
One smooth detection probe receives the light that above-mentioned light source sends and is projected to these parts or part or coating surface and receive reflected light;
One Optical Amplifier Unit couples the output terminal of described smooth detection probe, amplifies above-mentioned reflected optical power;
One photoelectric conversion unit connects the output terminal of this Optical Amplifier Unit, and the reflected light signal of changing behind the above-mentioned amplifying power is the electric signal of expression energy of reflection light value;
One comparing unit, the output terminal of above-mentioned photoelectric conversion unit and above-mentioned standard reflection luminous energy value storer is coupled respectively, in order to the energy of reflection light value of relatively this photoelectric conversion unit output and the standard reflection luminous energy value in this standard reflection luminous energy value storer, and when exceeding a predictive error, the absolute difference of this energy of reflection light value and this standard reflection luminous energy value exports an alarm signal;
One warns the unit, couples the output terminal of this comparing unit, is subjected to the excitation of above-mentioned alarm signal to send information warning.
2. automatic optical detection device as claimed in claim 1 is characterized in that: this standard reflection luminous energy value is finished under two kinds of situations for or assembling unassembled respectively at part and is added after the test energy of reflection light value and the reference value of the gained of averaging.
3. automatic optical detection device as claimed in claim 1 is characterized in that: this standard reflection luminous energy value is for adding after the test energy of reflection light value under two kinds of situations and the reference value of the gained of averaging respectively at not decorating or decorate to finish.
4. automatic optical detection device as claimed in claim 1 is characterized in that: this light detection probe comprises light transmitting terminal and optical receiving end.
5. automatic optical detection device as claimed in claim 4 is characterized in that: this light transmitting terminal is that light sends cable, and this optical receiving end is the light-receiving cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100207666A CN101275919A (en) | 2007-03-27 | 2007-03-27 | Automatic optical detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100207666A CN101275919A (en) | 2007-03-27 | 2007-03-27 | Automatic optical detector |
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| Publication Number | Publication Date |
|---|---|
| CN101275919A true CN101275919A (en) | 2008-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007100207666A Pending CN101275919A (en) | 2007-03-27 | 2007-03-27 | Automatic optical detector |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102650615A (en) * | 2011-02-25 | 2012-08-29 | 名硕电脑(苏州)有限公司 | Magnetic detecting and controlling device and method |
| CN105066914A (en) * | 2015-08-05 | 2015-11-18 | 贵州大学 | Method and device for quickly distinguishing surface smoothness of metal parts |
| CN108027319A (en) * | 2015-08-28 | 2018-05-11 | 于尔根·马克斯 | Method and apparatus for the surface texture and characteristic that detect sample |
| CN109412686A (en) * | 2018-10-30 | 2019-03-01 | 郑州云海信息技术有限公司 | A kind of optical power detection system and method |
| CN111381291A (en) * | 2018-12-28 | 2020-07-07 | 四川省绵阳西南自动化研究所 | Optical fiber type ammunition box ammunition lack detection mechanism |
| CN111745246A (en) * | 2020-07-09 | 2020-10-09 | 湖南鑫铮科技有限公司 | Automatic tin immersion machine |
| CN113396444A (en) * | 2019-02-07 | 2021-09-14 | 腓特烈斯港齿轮工厂股份公司 | Method and device for automatically identifying product defects of products and/or for automatically identifying causes of product defects |
-
2007
- 2007-03-27 CN CNA2007100207666A patent/CN101275919A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102650615A (en) * | 2011-02-25 | 2012-08-29 | 名硕电脑(苏州)有限公司 | Magnetic detecting and controlling device and method |
| CN105066914A (en) * | 2015-08-05 | 2015-11-18 | 贵州大学 | Method and device for quickly distinguishing surface smoothness of metal parts |
| CN108027319A (en) * | 2015-08-28 | 2018-05-11 | 于尔根·马克斯 | Method and apparatus for the surface texture and characteristic that detect sample |
| CN109412686A (en) * | 2018-10-30 | 2019-03-01 | 郑州云海信息技术有限公司 | A kind of optical power detection system and method |
| CN111381291A (en) * | 2018-12-28 | 2020-07-07 | 四川省绵阳西南自动化研究所 | Optical fiber type ammunition box ammunition lack detection mechanism |
| CN113396444A (en) * | 2019-02-07 | 2021-09-14 | 腓特烈斯港齿轮工厂股份公司 | Method and device for automatically identifying product defects of products and/or for automatically identifying causes of product defects |
| CN113396444B (en) * | 2019-02-07 | 2023-08-22 | 腓特烈斯港齿轮工厂股份公司 | Method and device for automatically identifying product defects of a product and/or for automatically identifying product defect causes of product defects |
| CN111745246A (en) * | 2020-07-09 | 2020-10-09 | 湖南鑫铮科技有限公司 | Automatic tin immersion machine |
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Open date: 20081001 |