CN206131991U - Planar positioning device based on laser light curtain - Google Patents
Planar positioning device based on laser light curtain Download PDFInfo
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- CN206131991U CN206131991U CN201621125701.9U CN201621125701U CN206131991U CN 206131991 U CN206131991 U CN 206131991U CN 201621125701 U CN201621125701 U CN 201621125701U CN 206131991 U CN206131991 U CN 206131991U
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Abstract
The utility model discloses a planar positioning device based on laser light curtain comprises two sets of mutually independent optic system, and optic system includes parallel laser sending end, light curtain positioning area and parallel laser receiving end, and a light curtain positioning area lies in between parallel laser sending end and the parallel laser receiving end, parallel laser sending end is including focusing laser emitter, fresnel lens and a plurality of speculum that is used for changing the light path orientation, fresnel lens sets up in laser emitter's the light path of can focusing, parallel laser receiving hand ladle is drawn together light and is cut apart reflector component, fresnel lens subassembly and CCD photoreceptor subassembly, and light is cut apart reflector component and is divide into two bundle at least laser with parallel laser, in the light path of fresnel lens subassembly setting after being cut apart reflector component by light and cut apart, is provided with CCD photoreceptor subassembly in the light path behind the fresnel lens subassembly. The utility model discloses can detect low object to the 0.15mm diameter in specific plane region.
Description
Technical field
This utility model is related to measurement and positioning field, and using orthogonal directional light laser light curtain, positioning one is specific
The position of small items in plane.
Background technology
At present, laser light curtain technology is all applied in multiple technical fields, to each specific application, due to it
The difference of technical requirements so that the concrete methods of realizing of laser light curtain is also different.
In security protection or automatic control in the production line field, it is typically with multiple generating lasers and forms a line, if
It is placed in one side of search coverage；In the relative another side of search coverage, the multiple photoelectric sensors for forming a line are set, laser is made
Emitter and photoelectric sensor are corresponded, and constitute a raster pattern laser light curtain, when there is object to enter search coverage, object
Shut out the light, photoelectric sensor will detect light change, be then converted into the signal of telecommunication, then deliver to signal processing part being allocated as subsequently
Process.This raster pattern laser light curtain, strong antijamming capability is stable, reliable, it is adaptable to the complicated field of the environment such as industry spot
Close, but due to due to physical arrangement, one-dimensional parameter can only be detected（Or length or width or height）, it is impossible to object is positioned one
Concrete coordinate position in individual plane, and its minimum light distance between axles is more than 10mm, is not suitable for detecting small items.
Position when laser light curtain another application is the noncontact detection bullet hits target surface in ball firing
And speed, a typical scenario is Application No. 201220007776 in this respect application " a kind of laser of simple structure essence
The manufacture method of degree target ", its technical characterstic is that a wordline shape laser instrument is arranged in into one jiao of target frame, " L " shape light
Sensing device array is arranged on target frame with respect on two sides at the angle, when bullet passes through target surface, it will in photosensor array
Relevant position forms shadow section, and to photosensor array output signal calculation process is carried out, you can when obtaining bullet through target surface
Corresponding target coordinate, program simple structure, measurement sensitivity is high compared with raster pattern laser light curtain, detectable minimum several millimeters
Object, but structural principle determines that its sensitivity of various location in search coverage differs greatly, and maximum sensitivity is only
It is present in a wordline shape laser instrument near zone, more far away, sensitivity is lower.Also one typical scenario is application number
200420007418 " manufacture method of combined parallel laser light curtain target ", its technical characterstic is the X along target surface, Y both directions
Laser generator and photoreceiver group are respectively provided with, composition combination parallel laser light curtain target, laser generator includes a light
Source capsule, light source tube front end is provided with a lens group, and rear end is provided with semiconductor laser instrument, and light-sensitive device component is by the light for being provided with session
Sensing device fixed strip and light-sensitive device are constituted, and a laser generator can correspond to one or more light-sensitive devices, certainty of measurement by
The installation interval size of light-sensitive device determines, in its embodiment for being given, measurable object minimum diameter is 5.45mm.
Program certainty of measurement is higher, has identical sensitivity in whole measured zone.
In biological experiment or physical and chemical experiment, commonly use to culture plates such as 4 holes, 12 holes, 24 holes, 96 holes, 384 holes, often
It is secondary when being tested, generally will with sample needle or liquid-transfering gun toward each sample well by several times（Repeatedly）Order adds sample, respectively
Kind of reagent or reactant, due to reagent or reactant value it is expensive, such as accidentally admixture plus indegree or order get wrong, no
But correct experimental result can not be obtained, and the reagent or reactant due to adding can not possibly be reused, and can only be abandoned, from
And cause larger economic loss.Therefore when being tested, sample needle needle point or the shifting of well is probeed into during to sample-adding every time
Particular location of the liquid rifle rifle nose part on culture plate carries out accurately detecting, and to position sample needle or liquid-transfering gun culture plate is sitting at
On which sample well at, by follow-up process circuit and corresponding operation program positioning result is shown and is made into one
The relevant treatment such as the counting of step, storage, experimental procedure prompting, to improving conventional efficient, reduce experimental expensess, there is greatly reality meaning
Justice.
Sample needle or liquid-transfering gun used in actual experiment, it probes into the needle point of culture plate sample well（Or rifle point）Part is straight
Generally in below 1mm, with the development of trace detection and ultramicron detection technique level, test the sample size and reagent for needing in footpath
Amount is fewer and feweri, is to meet this requirement, needle point（Or rifle point）Section diameter is in the sample needle of 0.5mm or so or the use of liquid-transfering gun
Frequency also more and more higher, in order to accurately and reliably detect sample needle needle point or liquid-transfering gun rifle nose part at culture plate sample well,
So as to position the particular location of sample needle or liquid-transfering gun on culture plate, its detectivity at least should be in below 0.25mm.
And, in the sample bore region of whole culture plate, it is desirable to which detectivity is evenly distributed.
In sum, the raster pattern laser light curtain scheme of security control and production line detection field is whether applied to, also
It is the laser light curtain target scheme for being applied to ball firing field, its detectivity, version is not all suitable for detection sample-adding
Pin needle point or small items as liquid-transfering gun rifle nose part, so as to position sample needle or liquid-transfering gun in culture plate sample well plane
Particular location.
The content of the invention
In consideration of it, the purpose of this utility model is to provide a kind of high plane positioning based on laser light curtain of sensitivity filling
Put.
To achieve these goals this utility model is adopted the following technical scheme that：A kind of plane positioning based on laser light curtain
Device, is made up of two groups of separate light path systems, the light path system include parallel laser transmitting terminal, light curtain positioning area and
Parallel laser receiving terminal, light curtain positioning area is located between parallel laser transmitting terminal and parallel laser pick-off end, the parallel laser
Transmitting terminal includes Focusable laser emitter, Fresnel Lenses and some reflecting mirrors for changing optical path direction, the luxuriant and rich with fragrance alunite
You are arranged in the light path of Focusable laser emitter lens, and a wordline laser is converted to into parallel line laser；It is described parallel sharp
Optical receiving end includes light segmentation mirror assembly, Fresnel Lenses component and the photosensitive device assemblies of CCD, through light curtain positioning area
Parallel laser is divided at least two beam laser by light segmentation mirror assembly, and Fresnel Lenses component is arranged on anti-by light segmentation
In the light path penetrated after mirror assembly segmentation, the photosensitive device assemblies of CCD are provided with the light path after Fresnel Lenses component.
Two groups of light path systems of the present utility model are separate when detecting, and can simultaneously obtain the X of object, and Y coordinate data is real
When property is good, and certainty of measurement is high, has identical sensitivity in specific plane region.Because light segmentation mirror assembly will be flat
Row laser has been divided into some beam parallel lasers, then by corresponding Fresnel Lenses in Fresnel Lenses component respectively to segmentation after
Parallel laser carries out beam constriction, and compare directly carries out the mode of beam constriction with Fresnel Lenses to whole beam parallel laser, drop
Low distortion degree of parallel laser when Fresnel Lenses carries out beam constriction, such that it is able to greatly improve certainty of measurement.
When this utility model is used in biological experiment or physical and chemical experiment, not only detectable positioning single channel sample needle or liquid-transfering gun
Position, also can simultaneously position 8 passages, 12 passages, the position of every rifle in 96 passage liquid-transfering guns.Jing computers are simulated and actual survey
Amount, the method provided using this utility model, can be in the object of specific plane regionally detecting to as little as 0.15mm diameters.
Description of the drawings
The nonlimiting examples that device of the present utility model can be given by accompanying drawing are further illustrated.
Fig. 1 is principle schematic of the present utility model；
Fig. 2 is dimensional structure diagram of the present utility model；
Fig. 3 is positive structure diagram of the present utility model；
Fig. 4 is left view structural representation of the present utility model；
Fig. 5 is right side structural representation of the present utility model；
Fig. 6 is vertical axial decomposing schematic representation of the present utility model；
In figure：The laterally adjustable burnt generating lasers of 1-, 2- bottoms mirror unit, the horizontal Fresnel Lenses of 3-, 4- top lights line point
Cut the horizontal Fresnel Lenses component of reflecting mirror lid, 5-, 6- Fresnel Lenses mounting brackets, the photosensitive device assemblies of the horizontal CCD of 7-, 8- to indulge
To Focusable laser emitter, 9- longitudinal directions Fresnel Lenses component, 10- longitudinal directions Fresnel Lenses, 11- longitudinal directions CCD photoreceptorss groups
Part, 12- generating laser mounting brackets, 13- pillars, 14- culture plates, 15- culture board mounts, the photosensitive device assemblies of 16-CCD are installed
Support, 17- reflecting mirrors, 18- light segmentation mirror assembly, 19- sample needles needle point or liquid-transfering gun rifle point.
Specific embodiment
This utility model is described further below in conjunction with the accompanying drawings.
This utility model is shown by the separate light path system of two groups of structure identicals and signal processing circuit and computing
Show that part is constituted.Only carry out principle explanation by taking one group of light path system as an example below.
One group of complete light path system includes a Focusable laser emitter（By a semiconductor laser, aperture plate,
One Bao Weier lens or cylindrical lens or ripple type microscope group are into a Fresnel Lenses, a Fresnel Lenses component is plural
Individual reflecting mirror and the photosensitive device assembly of CCD, as shown in Figure 1.
Focusable laser emitter sends a branch of word line laser beam, and Jing focusing component adjustment suitable distances are reflected
Mirror 17 is projected on Fresnel Lenses, and word line laser beam is transformed to parallel line laser, reflected mirror by Fresnel Lenses
Specific plane region is skimmed in 17 reflections（That is light curtain positioning area）, mirror assembly 18 is split by a light and is divided into plural Shu Ping
Row light, in projecting corresponding Fresnel Lenses component, by Fresnel Lenses component by directional light beam constriction to correspondence CCD senses
The photosensitive window effective width of light device assembly, the photosensitive device assemblies of Jing CCD are detected to laser beam.When having in specific plane region
In the presence of object（Sample needle needle point or liquid-transfering gun rifle point 19）, parallel line laser will be blocked, in the photosensitive window of the photosensitive device assemblies of CCD
Upper formation shade so that CCD photoreceptorss component output signals occur respective change, and this output signal is sent at process circuit
Reason, is calculated by arithmetic unit, and the one-dimensional coordinate parameter of object present position in specific plane is obtained.Another group of light path system
Its structure composition of uniting is essentially identical with aforementioned light path system, and directional light skims over same specific plane region, but parallel line laser
Light transmission direction is vertical with the transmission direction of previous group parallel lines laser beam, and object is obtained in the same manner in the specific plane
Another dimension coordinate parameter in region.For concrete application, when sample needle needle point or liquid-transfering gun rifle point probe into culture plate sample-adding
When hole carries out sample-adding operation, needle point or rifle nose part have blocked two groups of directional light light simultaneously, and its shade will be by two groups of light paths
The photosensitive device assemblies of related CCD detect simultaneously, the respective processing circuit processes of Jing, the two dimension that needle point or rifle point place is just obtained is sat
Mark data, so as to position the position of sample needle or liquid-transfering gun in specific plane region, Jing arithmetic units are calculated, and just be may know that and are worked as
The front moment carries out sample-adding operation to which sample well on culture plate.
In structure as shown in Fig. 2 to Fig. 6, a kind of two-dimensional positioning system based on laser light curtain, including laterally adjustable Jiao
Generating laser 1, bottom mirror unit 2, horizontal Fresnel Lenses 3, top light line segmentation reflecting mirror lid 4, horizontal Fresnel Lenses group
The photosensitive device assembly 7 of part 5, Fresnel Lenses mounting bracket 6, horizontal CCD, longitudinally adjustable burnt generating laser 8, longitudinal Fresnel are saturating
Mirror assembly 9, longitudinal Fresnel Lenses 10, the photosensitive device assemblies 11 of longitudinal direction CCD, generating laser mounting bracket 12, pillar 13, culture
Board mount 15, CCD photoreceptorss module mounting bracket 16, wherein, pillar 13 is fixedly installed on the bottom mirror unit 2, bottom is anti-
Penetrate the medial wall of microscope base 2 and be provided with reflecting mirror, laterally adjustable burnt generating laser 1 and longitudinally adjustable is provided with bottom mirror unit 2
The Laser emission direction of burnt generating laser 8, laterally adjustable burnt generating laser 1 and longitudinally adjustable burnt generating laser 8 is mutual
Vertically, laterally adjustable burnt generating laser 1 and longitudinally adjustable burnt generating laser 8 are fixed by generating laser mounting bracket 12
On bottom mirror unit 2；Pillar 13 is fixed with successively with lower component from the bottom up：The photosensitive device assemblies 7 of horizontal CCD are installed and are indulged
To the CCD photoreceptorss module mounting bracket 16 of the photosensitive device assemblies 11 of CCD, horizontal Fresnel Lenses component 5, longitudinal direction phenanthrene alunite are installed
The Fresnel Lenses mounting bracket 6 of your lens subassembly 9, horizontal Fresnel Lenses 3 and longitudinal Fresnel Lenses 10, inwall is provided with
Transverse light rays split the top light line segmentation reflecting mirror lid 4 of mirror surface group and longitudinal light segmentation mirror surface group；Horizontal phenanthrene alunite
Your lens subassembly 5 is arranged at the top of the photosensitive device assemblies 7 of horizontal CCD, and longitudinal Fresnel Lenses component 9 is arranged at longitudinal CCD senses
The top of light device assembly 11.The culture board mount 15 is arranged at Fresnel Lenses mounting bracket 6 and top light line segmentation reflecting mirror
Between lid 4.Culture plate 14 is placed on culture board mount 15.
In above structure, the bottom mirror unit 2 is rectangle, and pillar 13 is arranged on four angles of bottom mirror unit 2
On.Fresnel Lenses mounting bracket 6 connects the junction of Fresnel Lenses and Fresnel Lenses component, is then attached to pillar 13
On.Top light line segmentation reflecting mirror lid 4 is the non-close lid of rectangular ring.
It is of the present utility model to have particular application as with reference to above structure and principle：Laterally adjustable burnt Laser emission device assembly 1
（By a quasiconductor point-like laser instrument and a Bao Weier lens or cylindrical lens or corrugated mirror and aperture plate and focus adjusting mechanism
Composition, laser instrument launches laser Jing after aperture plate, then by point source after Bao Weier lens or cylindrical lens or ripple type mirror
It is changed into line source）Word line laser beam is sent, light path is changed by the mirror surface being integrated in bottom mirror unit 2, by one
Wordline type laser beam projects are transformed to parallel lines laser beam on horizontal Fresnel Lenses 3 by it, Jing be integrated in top reflecting mirror and
Reflecting mirror reflection in light segmentation speculum group 4, in the form of parallel lines laser light curtain, skims over specific plane region（Culture
Plate adding mouth aperture place plane）, it is irradiated to the transverse light rays segmentation speculum group being integrated in top light line segmentation reflecting mirror lid 4
On, parallel lines laser beam is divided into the parallel line laser of 2 beams and reflexes on horizontal Fresnel Lenses component 5, by laterally luxuriant and rich with fragrance
The parallel lines laser beam after segmentation is retracted to the photosensitive device assemblies 7 of horizontal CCD by corresponding Fresnel Lenses on Nie Er lens subassemblies 5
The effective width of photosensitive window on upper correspondence CCD sensor devices, the detection of Jing sensor devices is outputed signal at process circuit
Reason, arithmetic unit is calculated, and obtains the one-dimensional coordinate data of sample needle needle point or liquid-transfering gun rifle point；Another beam of laser is by longitudinally adjustable
Burnt Laser emission device assembly 8 sends, and Jing is integrated in the mirror surface in the mirror unit of bottom and changes light path, by word line laser beam
It is parallel lines laser beam to project the up conversion of longitudinal Fresnel Lenses 10, and Jing is integrated in anti-in top light line segmentation reflecting mirror lid 4
Mirror reflection is penetrated, in the form of parallel lines laser light curtain, specific plane region is skimmed over（Culture plate adding mouth aperture place plane）, shine
It is mapped in the longitudinal light segmentation speculum group being integrated in top light line segmentation reflecting mirror lid 4, collimated laser beam is by longitudinal light
Segmentation speculum group is divided into the parallel line laser of 3 beams, then the longitudinal Fresnel lens components 9 of Jing to shrink light beam, projects longitudinal CCD
Corresponding photosensitive window on the sensor devices of photosensitive device assembly 11, the process of Jing signal processing circuits and the calculating of arithmetic unit, obtain
To sample needle needle point or another dimension coordinate data of liquid-transfering gun rifle point position, synthesize finally by process circuit, computing is added
The concrete coordinate parameters of sample pin needle point or liquid-transfering gun rifle point in specific plane region, and positioning result conversion is corresponded to culture
Plate certain concrete well, shows on a display screen, can also make the phases such as further counting, storage, experimental procedure prompting
Pass is processed.
Those skilled in the art can otherwise realize with being adopted according to the index path of Fig. 1, such as Focusable laser
The a wordline laser of emitter transmitting, is directly over Fresnel Lenses, or is changed after light path into phenanthrene using multiple reflecting mirrors
Nie Er lens, and other modes.Creation is paid in this light path with reference to the those skilled in the art that do not need that prior art is done
Property work little improvement belong to protection domain of the present utility model.
Claims (7)
1. a kind of two-dimensional positioning system based on laser light curtain, is made up of two groups of separate light path systems, the light path system
System includes parallel laser transmitting terminal, light curtain positioning area and parallel laser pick-off end, and light curtain positioning area is located at parallel laser transmitting terminal
And parallel laser pick-off end between, it is characterised in that：The parallel laser transmitting terminal includes Focusable laser emitter, Fresnel
Lens and some reflecting mirrors for changing optical path direction, the Fresnel Lenses is arranged on the light path of Focusable laser emitter
On；The parallel laser receiving terminal includes light segmentation mirror assembly, Fresnel Lenses component and the photosensitive device assemblies of CCD, Jing
The parallel laser for crossing light curtain positioning area is divided at least two beam laser by light segmentation mirror assembly, and Fresnel Lenses component is arranged
In light path after mirror assembly segmentation is split by light, CCD senses are provided with the light path after Fresnel Lenses component
Light device assembly.
2. a kind of two-dimensional positioning system based on laser light curtain according to claim 1, it is characterised in that：The adjustable focus swash
Optical transmitting set includes：Laser instrument launches laser Jing after aperture plate, then through Bao Weier lens or cylindrical lens or ripple type mirror, will
Point source is changed into line source.
3. a kind of two-dimensional positioning system based on laser light curtain according to claim 1 or claim 2, it is characterised in that：The light path
System concrete structure is as follows：Including laterally adjustable burnt generating laser（1）, bottom mirror unit（2）, horizontal Fresnel Lenses（3）、
Top light line splits reflecting mirror lid（4）, horizontal Fresnel Lenses component（5）, Fresnel Lenses mounting bracket（6）, horizontal CCD it is photosensitive
Device assembly（7）, longitudinally adjustable burnt generating laser（8）, longitudinal Fresnel Lenses component（9）, longitudinal Fresnel Lenses（10）, it is vertical
To the photosensitive device assemblies of CCD（11）, generating laser mounting bracket（12）, pillar（13）, CCD photoreceptorss module mounting brackets
（16）, wherein, the bottom mirror unit（2）On be fixedly installed pillar（13）, bottom mirror unit（2）Medial wall is provided with reflection
Mirror, bottom mirror unit（2）On be provided with laterally adjustable burnt generating laser（1）With longitudinally adjustable burnt generating laser（8）, laterally
Focusable laser emitter（1）With longitudinally adjustable burnt generating laser（8）Laser emission direction be mutually perpendicular to；Pillar（13）From
Under be up fixed with successively with lower component：The photosensitive device assemblies of horizontal CCD are installed（7）With the photosensitive device assemblies of longitudinal CCD（11）'s
CCD photoreceptorss module mounting brackets（16）, horizontal Fresnel Lenses component is installed（5）, longitudinal Fresnel Lenses component（9）、
Horizontal Fresnel Lenses（3）With longitudinal Fresnel Lenses（10）Fresnel Lenses mounting bracket（6）, inwall is provided with lateral light
Line splits the top light line segmentation reflecting mirror lid of mirror assembly and longitudinal light segmentation mirror assembly（4）；Laterally Fresnel is saturating
Mirror assembly（5）It is arranged at the photosensitive device assemblies of horizontal CCD（7）Top, longitudinal Fresnel Lenses component（9）It is arranged at longitudinal CCD
Photosensitive device assembly（11）Top.
4. a kind of two-dimensional positioning system based on laser light curtain according to claim 3, it is characterised in that：Also include culture plate
Support（15）, the culture board mount（15）It is arranged at Fresnel Lenses mounting bracket（6）Split reflecting mirror lid with top light line（4）
Between.
5. a kind of two-dimensional positioning system based on laser light curtain according to claim 4, it is characterised in that：In the culture plate
Support（15）Upper placement culture plate（14）.
6. a kind of two-dimensional positioning system based on laser light curtain according to claim 3, it is characterised in that：It is described laterally adjustable
Burnt generating laser（1）With longitudinally adjustable burnt generating laser（8）By generating laser mounting bracket（12）It is fixed on bottom anti-
Penetrate microscope base（2）On.
7. a kind of two-dimensional positioning system based on laser light curtain according to claim 6, it is characterised in that：The bottom reflecting mirror
Seat（2）For rectangle, pillar（13）It is arranged on bottom mirror unit（2）Four angles on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621125701.9U CN206131991U (en) | 2016-10-14 | 2016-10-14 | Planar positioning device based on laser light curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621125701.9U CN206131991U (en) | 2016-10-14 | 2016-10-14 | Planar positioning device based on laser light curtain |
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| Publication Number | Publication Date |
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| CN206131991U true CN206131991U (en) | 2017-04-26 |
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| CN201621125701.9U Active CN206131991U (en) | 2016-10-14 | 2016-10-14 | Planar positioning device based on laser light curtain |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108326369A (en) * | 2018-02-07 | 2018-07-27 | 湖南宇晶机器股份有限公司 | A kind of laser alignment device |
| CN112985752A (en) * | 2021-02-22 | 2021-06-18 | 中国空气动力研究与发展中心空天技术研究所 | Auxiliary adjusting device for planar laser |
| CN114236167A (en) * | 2021-12-27 | 2022-03-25 | 西安工业大学 | Splicing type collimation light curtain light source device and splicing method thereof |
-
2016
- 2016-10-14 CN CN201621125701.9U patent/CN206131991U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108326369A (en) * | 2018-02-07 | 2018-07-27 | 湖南宇晶机器股份有限公司 | A kind of laser alignment device |
| CN108326369B (en) * | 2018-02-07 | 2019-11-29 | 湖南宇晶机器股份有限公司 | A kind of laser alignment device |
| CN112985752A (en) * | 2021-02-22 | 2021-06-18 | 中国空气动力研究与发展中心空天技术研究所 | Auxiliary adjusting device for planar laser |
| CN112985752B (en) * | 2021-02-22 | 2023-02-07 | 中国空气动力研究与发展中心空天技术研究所 | Auxiliary adjusting device for planar laser |
| CN114236167A (en) * | 2021-12-27 | 2022-03-25 | 西安工业大学 | Splicing type collimation light curtain light source device and splicing method thereof |
| CN114236167B (en) * | 2021-12-27 | 2023-10-03 | 西安工业大学 | Spliced quasi-collimation light curtain light source device and splicing method thereof |
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