CN101131368B - Automatic foreign body checking machine with double-photo signal receiving sensor array structure - Google Patents
Automatic foreign body checking machine with double-photo signal receiving sensor array structure Download PDFInfo
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- CN101131368B CN101131368B CN200710046163A CN200710046163A CN101131368B CN 101131368 B CN101131368 B CN 101131368B CN 200710046163 A CN200710046163 A CN 200710046163A CN 200710046163 A CN200710046163 A CN 200710046163A CN 101131368 B CN101131368 B CN 101131368B
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- receiving sensor
- sensor array
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- collecting lens
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Abstract
The invention discloses an automatic inspection machine of the array structure of twin-optical signal receiving sensor, it is installed with luminotron components, light emission collecting lens, light receive collecting lens, imaging mirror, the first optical receiving sensor array from left to right, it contains a liquid container set on the intermittent revolving solid between the light emission collecting lens and light receive collecting lens, it is characterized in that a beam splitter was set between the imaging mirror and the first light column; the imaging beam pass through the beam splitter and was divided into two parts: direct and reflection parts, the direct part was received by the first optical receiving sensor array, the reflection part was received by the second optical receiving sensor array, making up the twin-optical signal receiving sensor array structure to detect the foreign material. Adopt the twin-optical signal receiving sensor structure, set light column before the twin-optical receiving sensor array, choose the same twin-optical receiving sensor array device and mismatched installed, ensure that all the optical signal was received without missing, no foreign body missed been detected, improves signal to noise ratio and sensitivity of the system with the installation of slit light column.
Description
Technical field
The present invention relates on a kind of pharmaceutical production line full-automatic on-line measuring device, particularly a kind of automatic foreign body checking machine with double-photo signal receiving sensor array structure to fluid product quality testings such as transparent or semitransparent oral liquid, ampoule and infusion bottles.
Background technology
Automatic foreign body checking machine is to the full-automatic on-line measuring device of fluid product quality testings such as transparent or semitransparent oral liquid, ampoule and infusion bottle on pharmaceutical production line.Adopting the photosensitive tube array is the structural approach of widespread usage as the light signal receiving element.But the photosensitive tube array device is to be combined by tens photosensitive tubes, has dead band (blind area) between photosensitive tube and the photosensitive tube, and the existence of dead band has caused the omission to foreign matter to detect, and detection efficiency reduces.
Summary of the invention
In order to overcome existing automatic foreign body checking machine because the photosensitive tube array has caused the omission to foreign matter to detect as the existence of the dead band of light signal receiving element, and detection efficiency reduction shortcoming, the invention provides a kind of automatic foreign body checking machine with double-photo signal receiving sensor array structure.
Technical scheme of the present invention is, a kind of automatic foreign body checking machine with double-photo signal receiving sensor array structure, it is equipped with luminotron assembly, light emission collecting lens, light-receiving collecting lens, imaging mirror, the first optical receiving sensor array from left to right successively, the airtight container that includes the transparent or semitransparent liquid of tested liquid places intermittence between light emission collecting lens and the light-receiving collecting lens on the rotary body, is characterized in:
A. before the described first optical receiving sensor array, be equipped with the first smooth hurdle;
B. between the described imaging mirror and the first smooth hurdle, have additional 45 degree half reflection and half transmission spectroscope or beam split block prisms;
C. the light beam that is sent by described luminotron assembly forms parallel beam through light emission collecting lens, parallel beam passes the intermittently airtight container of the transparent or semitransparent liquid that includes tested liquid of rotation, enter the light-receiving collecting lens, form the imaging beam in the solution zone in the detected container by the imaging mirror, imaging beam is divided into direct projection and reflection two parts by 45 degree half reflection and half transmission spectroscopes or beam split block prism, on reflected light path, have additional the second optical receiving sensor array, be equipped with the second smooth hurdle in the second optical receiving sensor array front; The light beam that is sent by the luminotron assembly forms parallel beam through light emission collecting lens, the direct projection part that forms the imaging beam in the solution zone in the detected container via the imaging mirror arrives the first optical receiving sensor array through the first smooth hurdle, the reflecting part of imaging beam arrives the second optical receiving sensor array through the second smooth hurdle, has constituted the foreign matter in two optical receiving sensor array structure detection receptacle liquid.
Described first, second optical receiving sensor array device is selected identical device for use, and a dislocation, the distance of dislocation are arranged on the upright position when two optical receiving sensor arrays are installed is half of adjacent two photosensitive tube centre distances in the optical receiving sensor array.
The invention has the beneficial effects as follows, owing to adopted two optical receiving sensor array structures, two optical receiving sensor array fronts slit light hurdle is set, improved signal to noise ratio (S/N ratio), and make two optical receiving sensor array devices select identical device for use, a dislocation is arranged on the upright position during installation, the distance of dislocation is at interval half of adjacent two photosensitive tubes in the optical receiving sensor array, the existence of having eliminated existing single optical receiving sensor array device dead band has caused the omission to foreign matter to detect, and the low shortcoming of detection efficiency.
Description of drawings
Fig. 1 is the automatic foreign body checking machine index path with double-photo signal receiving sensor array structure;
Fig. 2 is the automatic foreign body checking machine structural drawing with double-photo signal receiving sensor array structure;
Fig. 3 is the distribution schematic diagram of optical receiving sensor array photosurface and blind area;
Fig. 4 is the distribution schematic diagram of whole light signals on the imaging surface;
Fig. 5 is the distribution schematic diagram of light signal photosensitive area and blind area on the first optical receiving sensor array;
Fig. 6 is the distribution schematic diagram of light signal photosensitive area and blind area on the second optical receiving sensor array.
Embodiment
By Fig. 1, shown in Figure 2, a kind of automatic foreign body checking machine with double-photo signal receiving sensor array structure, it is equipped with luminotron assembly 1, light emission collecting lens 2, light-receiving collecting lens 4, imaging mirror 5, the first optical receiving sensor array 7 from left to right successively, the airtight container 3 that includes the transparent or semitransparent liquid of tested liquid places intermittence between light emission collecting lens and the light-receiving collecting lens on the rotary body, is characterized in:
A. before the described first optical receiving sensor array 7, be equipped with the first smooth hurdle 9;
B. between the described imaging mirror 5 and the first smooth hurdle 7, be provided with 45 degree half reflection and half transmission spectroscope or beam split block prisms 6;
C. the light beam that is sent by described luminotron assembly 1 forms parallel beam through light emission collecting lens 2, parallel beam passes the intermittently airtight container 3 of the transparent or semitransparent liquid that includes tested liquid of rotation, enter light-receiving collecting lens 4, form the imaging beam in the solution zone in the detected container by imaging mirror 5, imaging beam is divided into direct projection and reflection two parts by 45 degree half reflection and half transmission spectroscopes or beam split block prism 6, on reflected light path, be provided with the second optical receiving sensor array 8, be equipped with the second smooth hurdle 10 in the second optical receiving sensor array, 8 fronts; The light beam that is sent by luminotron assembly 1 forms parallel beam through light emission collecting lens 2, the direct projection part that forms the imaging beam in the solution zone in the detected container 3 via imaging mirror 5 arrives the first optical receiving sensor array 7 through the first smooth hurdle 9, the reflecting part of imaging beam arrives the second optical receiving sensor array 8 through the second smooth hurdle 10, has constituted the foreign matter in two optical receiving sensor array structure detection receptacle liquid.
Described first, second optical receiving sensor array device is selected identical device for use, and a dislocation when being installed, two optical receiving sensor arrays arranged on the upright position, the distance of dislocation is at interval half of adjacent two photosensitive tubes in the optical receiving sensor array, has so just guaranteed whole receptions of light signal.
Principle of work of the present invention is described as follows:
The light beam that luminotron assembly 1 sends forms parallel beam through light emission collecting lens 2, light beam passes the intermittently detected molten device of transparent or semitransparent sealing (ampoule and infusion bottle etc.) 3 of rotation, enter light-receiving collecting lens 4, form the imaging beam in solution zone in the detected container by imaging mirror 5, imaging beam directly arrives the first optical receiving sensor array 7.Imaging beam is accepted by single optical receiving sensor array like this, but optical receiving sensor by tens independently photosensitive tube form, thereby photosurface is not continuous.As shown in Figure 3, the band profile line is a photosurface among the figure, and all the other are the blind area.The imaging beam that projects the optical receiving sensor array does not so all convert electric signal to, and the light signal that only projects the photosurface part is converted into electric signal.And the light signal that projects the blind area can not convert electric signal to.Receive in order to replenish blind area area light signal, the present invention proposes as shown in Figure 1 the light channel structure and the automatic foreign body checking machine with double-photo signal receiving sensor array structure of concrete structure as shown in Figure 2.Characteristics of the present invention are exactly to have set up 45 degree half reflection and half transmission spectroscope or beam split block prisms 6 in the light path that arrives the first optical receiving sensor array 7, the imaging beam of Jie Shouing is divided into two bundle light by 45 degree half reflection and half transmission spectroscope beam split block prisms 6 like this, two identical images have been formed respectively, one of them image is received by optical receiving sensor array 7, and another image is received by optical receiving sensor array 8.The light signal of Jie Shouing has been divided into two parts like this, and as shown in Figure 4, Fig. 4 sets the light image signal halves to be cut apart.Cut apart that width equates on back light receiving area and the dark space vertical direction. left oblique line part as shown in Figure 5, right oblique line part is as shown in Figure 6.If Bu Fen light signal is received by optical receiving sensor array 7 as shown in Figure 5, the light signal of part so shown in Figure 6 is just received by optical receiving sensor array 8.Fig. 4 represents whole light signals, and so two optical receiving sensor array structures just can not omitted the reception of light signal because of the dead band between the photosensitive tube.
If the optical receiving sensor array device that the selection in the light channel structure is identical, two optical receiving sensor arrays are provided with a dislocation on the upright position when installing, the distance of dislocation is half of adjacent two photosensitive tube centre distances in the optical receiving sensor array.Whole receptions of light signal have so just been guaranteed.If the width on the vertical direction of photosensitive tube photosensitive area is greater than the blind area width then the reception of light signal has certain coverage, but the width on the vertical direction of photosensitive tube photosensitive area can not be less than the blind area width, the omission that can cause light signal to receive like this.
Another characteristics of the present invention then are to be provided with the light hurdle before two optical receiving sensor arrays, the light hurdle is slit light hurdle, regulate the width on light hurdle and can regulate the luminous flux that enters the optical receiving sensor array, equally also regulated the signal to noise ratio (S/N ratio) (ratio of tested useful area and foreign matter area) that detects foreign matter, light hurdle slit is more little, and detection signal-to-noise ratio is high more relatively, can fully improve the light detection signal-to-noise ratio, regulating light hurdle slit width is the scalable detection signal-to-noise ratio, improves sensitivity.And the field of receipts is missed in the whole nothing lefts of other light signal, for example: optical fiber, the photosensitive tube arranged in dislocation, but light hurdle slit width can not turn down arbitrarily, can not fully improve signal to noise ratio (S/N ratio).
Claims (1)
1. automatic foreign body checking machine with double-photo signal receiving sensor array structure, it is equipped with luminotron assembly, light emission collecting lens, light-receiving collecting lens, imaging mirror, the first optical receiving sensor array from left to right successively, the airtight container that includes the transparent or semitransparent liquid of tested liquid places intermittence between light emission collecting lens and the light-receiving collecting lens on the rotary body, it is characterized in that:
A. before the described first optical receiving sensor array, be equipped with the first smooth hurdle;
B. between the described imaging mirror and the first smooth hurdle, have additional 45 degree half reflection and half transmission spectroscope or beam split block prisms;
C. the light beam that is sent by described luminotron assembly forms parallel beam through light emission collecting lens, parallel beam passes the intermittently airtight container of the transparent or semitransparent liquid that includes tested liquid of rotation, enter the light-receiving collecting lens, form the imaging beam in the solution zone in the described airtight container by the imaging mirror, imaging beam is divided into direct projection and reflection two parts by 45 degree half reflection and half transmission spectroscopes or beam split block prism, on reflected light path, have additional the second optical receiving sensor array, be equipped with the second smooth hurdle in the second optical receiving sensor array front; The direct projection part of imaging beam arrives the first optical receiving sensor array through the first smooth hurdle, the reflecting part of imaging beam arrives the second optical receiving sensor array through the second smooth hurdle, the described first and second optical receiving sensor arrays are selected identical device for use, and a dislocation when being installed, the described first and second optical receiving sensor arrays arranged on the upright position, the distance of dislocation is half of adjacent two photosensitive tube centre distances in the optical receiving sensor array, and photosensitive tube photosensitive area width in vertical direction is not less than blind area width in vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710046163A CN101131368B (en) | 2007-09-20 | 2007-09-20 | Automatic foreign body checking machine with double-photo signal receiving sensor array structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710046163A CN101131368B (en) | 2007-09-20 | 2007-09-20 | Automatic foreign body checking machine with double-photo signal receiving sensor array structure |
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| Publication Number | Publication Date |
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| CN101131368A CN101131368A (en) | 2008-02-27 |
| CN101131368B true CN101131368B (en) | 2010-05-19 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101482519B (en) * | 2009-02-09 | 2013-05-08 | 蒋惠忠 | Detection apparatus for phase foreign body in fluid |
| DE102016209722A1 (en) * | 2016-06-02 | 2017-12-07 | Robert Bosch Gmbh | Apparatus and method for inspecting containers |
| CN109239001B (en) * | 2018-09-17 | 2020-11-03 | 中国科学院武汉物理与数学研究所 | Remote sensing monitoring device and method for absorption, filtering and imaging of tail gas difference of motor vehicle |
| WO2023050040A1 (en) * | 2021-09-28 | 2023-04-06 | 华为技术有限公司 | Camera module and electronic device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5637864A (en) * | 1994-09-17 | 1997-06-10 | Owens-Brockway Glass Container Inc. | Optical inspection of translucent containers for vertical checks and split seams in the container sidewalls |
| US5699152A (en) * | 1995-04-03 | 1997-12-16 | Alltrista Corporation | Electro-optical inspection system and method |
| CN201083695Y (en) * | 2007-09-20 | 2008-07-09 | 上海市激光技术研究所 | Double light signal received automatic foreign matter inspection machine |
-
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5637864A (en) * | 1994-09-17 | 1997-06-10 | Owens-Brockway Glass Container Inc. | Optical inspection of translucent containers for vertical checks and split seams in the container sidewalls |
| US5699152A (en) * | 1995-04-03 | 1997-12-16 | Alltrista Corporation | Electro-optical inspection system and method |
| CN201083695Y (en) * | 2007-09-20 | 2008-07-09 | 上海市激光技术研究所 | Double light signal received automatic foreign matter inspection machine |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2005-24546A 2005.01.27 |
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