CN201194000Y - Porosity detecting system for product with same pore direction - Google Patents

Porosity detecting system for product with same pore direction Download PDF

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Publication number
CN201194000Y
CN201194000Y CNU2008200933899U CN200820093389U CN201194000Y CN 201194000 Y CN201194000 Y CN 201194000Y CN U2008200933899 U CNU2008200933899 U CN U2008200933899U CN 200820093389 U CN200820093389 U CN 200820093389U CN 201194000 Y CN201194000 Y CN 201194000Y
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China
Prior art keywords
detection system
porosity
detection
electric signal
parallel light
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Expired - Fee Related
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CNU2008200933899U
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Chinese (zh)
Inventor
郭增艳
万文治
张法亮
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BYD Co Ltd
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BYD Co Ltd
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Priority to CNU2008200933899U priority Critical patent/CN201194000Y/en
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Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides a porosity detection system for products having pores or gaps in consistent direction, which belongs to the optics detection field. The detection system comprise a parallel light emission apparatus for providing parallel rays to tested object; a photovoltaic conversion apparatus for sensing parallel light intensity from the parallel light emission apparatus transmit through the tested object and generating electrical signals according to the sensed light intensity; and a detection result output apparatus for judging whether the porosity of the tested object is qualified according to the value of the electric signals generated by the photovoltaic conversion apparatus and the reference electric signal of the standard sample and outputs the judging result. The detection system in the utility model achieves the advantages of simple detection principle, simple and rapid operation, accurate and reliable detection result and can be applied in detection in industrial mass production.

Description

A kind of porosity detection system of hole direction homegeneous production
Technical field
The utility model belongs to the optical detection field, relates in particular to a kind of porosity detection system of hole direction homegeneous production.
Background technology
Detect ceramic honey comb at present, the honeycomb metal, the method of the porosity of hole direction homegeneous productions such as cellularpiston is the light source ocular estimate, ceramic honey comb with the carrier that can be used as the motor vehicle vent gas purification catalysis agent is an example, for preventing to apply appendix to honeycomb ceramic carrier when the slurries of bigger serface of catalyzer are arranged, the phenomenon that slurry plugs honeycomb hole occurs, applying the back uses high pressure air rifle along ceramic honey comb hole direction air blowing 1-3 minute earlier, face toward light source then by eye-observation hole stopping state, and then judge whether the product through applying is qualified, this porosity detection mode is too dependent on manpower, and the subjective factor influence so that the influence that are subjected to the testing staff when producing detection in batches easily detect degree of accuracy.
The utility model content
The purpose of this utility model is to provide a kind of porosity detection system of hole direction homegeneous production, is intended to solve present detection mode and is subjected to testing staff's subjective factor influence so that the problem that influence detects degree of accuracy easily.
The utility model is achieved in that a kind of porosity detection system of hole direction homegeneous production, comprising:
The parallel light emitting device of parallel rays is provided to object under test;
The directional light light intensity that sensing sends through the described parallel light emitting device of object under test transmission, and produce the photoelectric conversion device of electric signal according to the light intensity that senses; And
Whether qualified the electric signal that produces according to described photoelectric conversion device and the magnitude relationship of the reference electrical signal of standard model judge the porosity of object under test testing result output unit and that judged result is exported.
In the utility model, sending directional light with parallel light emitting device, to shine porosity respectively be 100% standard model and examined object, and will carry out opto-electronic conversion respectively through the light of standard model and examined object transmission and obtain each self-corresponding electric signal, as current signal, magnitude relationship by the electric signal of testing result output unit standard of comparison sample and examined object correspondence, thereby whether the porosity of judging examined object is qualified, the detection principle is simple, easy to operate quick, testing result is accurately reliable, detects applicable to industrial batch production.
Description of drawings
Fig. 1 is the structure principle chart of the porosity detection system of the hole direction homegeneous production that provides of the utility model embodiment;
Fig. 2 is the structure principle chart of the parallel light emitting device that provides of the utility model embodiment;
Fig. 3 is the structure principle chart of the photoelectric conversion device that provides of the utility model embodiment;
Fig. 4 is the structure principle chart of the testing result output unit that provides of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Among the utility model embodiment, shining porosity respectively with directional light is 100% standard model and examined object, and will carry out opto-electronic conversion respectively through the light of standard model and examined object transmission and obtain each self-corresponding electric signal, as current signal, the magnitude relationship of the electric signal of standard of comparison sample and examined object correspondence, thus whether the porosity of judging examined object is qualified.
Fig. 1 shows the structural principle of the hole direction homegeneous production porosity detection system that the utility model embodiment provides, and for convenience of description, only shows the part relevant with the utility model embodiment.Please refer to Fig. 1, this detection system comprises parallel light emitting device 11, photoelectric conversion device 12 and testing result output unit 13, examined object A places between parallel light emitting device 11 and the photoelectric conversion device 12 during detection, and the hole direction of examined object A is consistent with the parallel direction of light that parallel light emitting device 11 is sent, shine on the photoelectric conversion device 12 after the directional light process examined object A transmission, photoelectric conversion device 12 produces an electric signal according to the light intensity of experiencing, to exporting testing result output unit 13 to after this electric signal amplification, the electric signal corresponding that testing result output unit 13 will receive with examined object A, with be that the corresponding reference electrical signal of 100% standard model is compared with the porosity that detects in advance, judge that according to the magnitude relationship of the two porosity of examined object A is whether within allowed band, if in allowed band, the porosity of then judging object under test A is qualified, otherwise be defective, at last judged result exported.
Among the utility model embodiment, directional light produces through convex lens by pointolite (as light emitting diode) is luminous, Fig. 2 shows the structural principle of parallel light emitting device 11, pointolite 111 places the focus place of convex lens 113, graticule 112 is used for the optical axis correction direction, the light that pointolite 111 sends becomes parallel rays after by convex lens 113 transmissions, among the utility model embodiment, LED in the pointolite 111 adopts monochromatic LED, so that the light ray energy unanimity in the parallel beam that 113 transmissions obtain through convex lens, finally make parallel rays pass through the cellular photoelectric conversion device 12 sensing light intensity more easily that waits behind the hole product, avoid in light, existing the light time of multiple frequency, because the Different Effects of photon energy is to the sensitization of photoelectric conversion device 12.Consider that simultaneously the Lights section is the key of determining measuring accuracy, for satisfying the reliability of batch detection, need be at parallel light emitting device 11 inner large tracts of land and the high parallel rayss of uniformity coefficient of producing, therefore adopt the polylith high-performance to integrate light emitting diode (Light Emitting Diode, LED) the module spliced cooperation is an array of source, and after convex lens 113, install multilayer frosted glass group 114 additional with further weakening illuminance and improve the homogeneity of illuminance, it is good that this high-performance integration led array plays light characteristic, but must strict screening be consistent during amalgamation, could further guarantee the homogeneity of illuminance to guarantee the led array photoelectric parameter after the amalgamation.
Fig. 3 shows the structural principle of the photoelectric conversion device 12 that the utility model embodiment provides, for convenience of description, equally only show the part relevant with the utility model embodiment, wherein photosensitive device adopts photodiode to carry out opto-electronic conversion, also can adopt other devices to realize during concrete enforcement, for example phototriode with photoelectric converting function.
Please refer to Fig. 3, photodiode D is used for sensing through examined object A transmission directional light intensity later, when irradiate light arrives photodiode D, photodiode D produces photocurrent, the capacitor C in the loop of formation in parallel with it charges, signal amplification circuit AM gathers the charging current signal of capacitor C and carries out processing and amplifying, among the utility model embodiment, for the appearance of avoiding interference problems such as self-excitation and reach weakening, the purpose of filtering, signal amplification circuit AM adopts two-stage to amplify, wherein first order amplifying circuit adopts the transreactance amplifier structure, be used to finish the conversion and the one-level amplification of current/voltage, require imbalance little, it is low to drift about, and second level amplifying circuit is the instrument amplifier structure, be used to finish secondary and amplify, require to have high open-loop gain, the characteristics of good linearity.
Fig. 4 shows the structural principle of testing result output unit 13 among Fig. 1, master controller 131 receives after the electric signal corresponding with examined object A of photoelectric conversion device 12 outputs, the porosity that reads storage from storage unit 132 is the reference electrical signal value of 100% standard model correspondence, relatively whether the magnitude relationship of two electric signal and the porosity of judging examined object A be within allowed band, if in allowed band, the porosity of then judging object under test A is qualified, otherwise be defective, master controller 131 exports judged result to display unit 133 and shows, the testing staff can learn that intuitively whether qualified the product that is detecting is by display unit 133, and wherein storage unit 132 is used for the reference electrical signal value of storage standards sample and the testing result of object under test A.In order when detecting the underproof product of porosity, to remind the testing staff to take relevant action to flow into next procedure to prevent unacceptable product, master controller 131 triggers alarm unit 134 and reports to the police when detecting unacceptable product, for example in the mode of buzzing or warning lamp.
Among the utility model embodiment, extraneous high light disturbs and influences the accuracy of detection of detection system in order to prevent to detect, parallel light emitting device 11 and photoelectric conversion device 12 place in the protective cover of anti glare anti static coatings interference, as dark glass, examined object A can enter with the form of streamline or manually be positioned in this protective cover during detection.
In sum, among the utility model embodiment, sending directional light with parallel light emitting device, to shine porosity respectively be 100% standard model and examined object, and will carry out opto-electronic conversion respectively through the light of standard model and examined object transmission and obtain each self-corresponding electric signal, as current signal, magnitude relationship by the electric signal of testing result output unit standard of comparison sample and examined object correspondence, thereby whether the porosity of judging examined object is qualified, the detection principle is simple, easy to operate quick, testing result is accurately reliable, detects applicable to industrial batch production.Parallel light emitting device is made of pointolite and convex lens, and pointolite adopts the monochromatic LED module array of photoelectric parameter unanimity, so that the light ray energy unanimity in the parallel beam that transmission obtains through convex lens is avoided because the Different Effects of photon energy arrives the sensitization of photoelectric conversion device; The photocurrent that photoelectric conversion device senses carries out processing and amplifying by a two-stage amplifying circuit, and the first order adopts the transreactance amplifier structure, and the requirement imbalance is little, drift is low, and the instrument amplifier structure is adopted in the second level, requires to have the characteristics of high open-loop gain, good linearity; The testing result output unit adopts the way of output that shows and report to the police, and reminds the testing staff to take relevant action to flow into next procedure to prevent unacceptable product; Parallel light emitting device and photoelectric conversion device place in the protective cover that an anti glare anti static coatings disturbs, and avoid extraneous high light to disturb and influence the accuracy of detection of detection system.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.

Claims (10)

1. the porosity detection system of a hole direction homegeneous production is characterized in that, described detection system comprises:
The parallel light emitting device of parallel rays is provided to object under test;
The light intensity of the directional light that sensing sends through the described parallel light emitting device of object under test transmission, and produce the photoelectric conversion device of electric signal according to the light intensity that senses; And
Whether qualified the electric signal that produces according to described photoelectric conversion device and the magnitude relationship of the reference electrical signal of standard model judge the porosity of object under test testing result output unit and that judged result is exported.
2. detection system as claimed in claim 1 is characterized in that, described parallel light emitting device and described photoelectric conversion device place in the protective cover of anti glare anti static coatings interference.
3. detection system as claimed in claim 1 is characterized in that, described parallel light emitting device comprises convex lens and places the pointolite at described concave lens focus place.
4. detection system as claimed in claim 3 is characterized in that, described pointolite is the array of source of being made up of the led module of photoelectric parameter unanimity.
5. detection system as claimed in claim 4, it is characterized in that, described parallel light emitting device comprises that also one weakens the illuminance of the directional light that the light sent by the described pointolite of described convex lens transmission obtains, and improves the inhomogeneity frosted glass group of directional light illuminance.
6. as claim 4 or 5 described detection systems, it is characterized in that described led module is the monochromatic LED module.
7. detection system as claimed in claim 1 is characterized in that, described photoelectric conversion device comprises:
Light signal is converted to the photosensitive device of electric signal; And
The electric signal that described photosensitive device is converted to carries out the signal amplification circuit of processing and amplifying.
8. detection system as claimed in claim 7 is characterized in that, described signal amplification circuit comprises:
The electric signal that adopts the transreactance amplifier structure that described photosensitive device is converted to carries out the first order amplifying circuit of processing and amplifying; And
The second level amplifying circuit of the further processing and amplifying of signal after adopting the instrument amplifier structure to described first order amplifying circuit processing and amplifying.
9. detection system as claimed in claim 1 is characterized in that, described testing result output unit comprises:
The storage unit of the reference electrical signal value of storage standards sample;
According to the magnitude relationship of the reference electrical signal of the standard model of storing in the electric signal of described photoelectric conversion device output and the described storage unit, judge the porosity of object under test master controller whether qualified and that judged result is exported; And
Show the display unit of object under test porosity testing result, be connected with described master controller.
10. detection system as claimed in claim 9 is characterized in that, described testing result output unit also comprises one by the alarm unit of described master controller according to the warning of object under test porosity detection triggers.
CNU2008200933899U 2008-04-18 2008-04-18 Porosity detecting system for product with same pore direction Expired - Fee Related CN201194000Y (en)

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Application Number Priority Date Filing Date Title
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102359928A (en) * 2011-06-22 2012-02-22 安徽艾可蓝节能环保科技有限公司 Device for detecting through hole rate of ceramic carrier by high-energy parallel light source
CN102639990A (en) * 2009-11-13 2012-08-15 康宁股份有限公司 High-resolution large-field scanning inspection system for extruded ceramic honeycomb structures
CN102879312A (en) * 2012-09-24 2013-01-16 先进储能材料国家工程研究中心有限责任公司 Method capable of continuously monitoring change of porosity of porous material and detecting porosity value
CN105675618A (en) * 2016-01-19 2016-06-15 浙江工业大学义乌科学技术研究院有限公司 Double-light-source yarn flaw detection method
CN106248552A (en) * 2016-08-19 2016-12-21 江苏龙净科杰催化剂再生有限公司 The apparatus for inspecting through hole of cellular catalyst
CN107290347A (en) * 2017-07-12 2017-10-24 江苏阿瑞斯智能设备有限公司 Honeycomb substrate defect automated detection method
GB2560299A (en) * 2017-02-01 2018-09-12 Nicoventures Holdings Ltd Heating element and method of analysing
CN110231265A (en) * 2018-03-05 2019-09-13 深圳光峰科技股份有限公司 Porous fluorescence ceramics porosity detection device and its detection method

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102639990A (en) * 2009-11-13 2012-08-15 康宁股份有限公司 High-resolution large-field scanning inspection system for extruded ceramic honeycomb structures
CN102639990B (en) * 2009-11-13 2015-04-15 康宁股份有限公司 High-resolution large-field scanning inspection system for extruded ceramic honeycomb structures
CN102359928A (en) * 2011-06-22 2012-02-22 安徽艾可蓝节能环保科技有限公司 Device for detecting through hole rate of ceramic carrier by high-energy parallel light source
CN102879312A (en) * 2012-09-24 2013-01-16 先进储能材料国家工程研究中心有限责任公司 Method capable of continuously monitoring change of porosity of porous material and detecting porosity value
CN102879312B (en) * 2012-09-24 2015-06-17 先进储能材料国家工程研究中心有限责任公司 Method capable of continuously monitoring change of porosity of porous material and detecting porosity value
CN105675618A (en) * 2016-01-19 2016-06-15 浙江工业大学义乌科学技术研究院有限公司 Double-light-source yarn flaw detection method
CN106248552A (en) * 2016-08-19 2016-12-21 江苏龙净科杰催化剂再生有限公司 The apparatus for inspecting through hole of cellular catalyst
GB2560299A (en) * 2017-02-01 2018-09-12 Nicoventures Holdings Ltd Heating element and method of analysing
GB2560299B (en) * 2017-02-01 2021-07-07 Nicoventures Trading Ltd Heating element and method of analysing
CN107290347A (en) * 2017-07-12 2017-10-24 江苏阿瑞斯智能设备有限公司 Honeycomb substrate defect automated detection method
CN110231265A (en) * 2018-03-05 2019-09-13 深圳光峰科技股份有限公司 Porous fluorescence ceramics porosity detection device and its detection method
CN110231265B (en) * 2018-03-05 2022-02-11 深圳光峰科技股份有限公司 Porous fluorescent ceramic porosity detection device and detection method thereof

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090211

Termination date: 20160418

CF01 Termination of patent right due to non-payment of annual fee