CN114371131B - Automatic focusing mechanism of Raman spectrometer - Google Patents
Automatic focusing mechanism of Raman spectrometer Download PDFInfo
- Publication number
- CN114371131B CN114371131B CN202210152729.5A CN202210152729A CN114371131B CN 114371131 B CN114371131 B CN 114371131B CN 202210152729 A CN202210152729 A CN 202210152729A CN 114371131 B CN114371131 B CN 114371131B
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- gear
- code wheel
- positioning
- probe
- photoelectric switch
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- 238000001069 Raman spectroscopy Methods 0.000 title claims abstract description 35
- 239000000523 sample Substances 0.000 claims abstract description 32
- 238000001514 detection method Methods 0.000 claims description 31
- 230000005540 biological transmission Effects 0.000 claims description 26
- 238000012790 confirmation Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 4
- 235000013305 food Nutrition 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000447 pesticide residue Substances 0.000 description 1
- 239000000273 veterinary drug Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/65—Raman scattering
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- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention relates to the technical field of Raman spectrometers, and discloses an automatic focusing mechanism of a Raman spectrometer. According to the invention, the gear is driven by the direct-current gear motor to realize quick automatic focusing of the probe; the photoelectric switch realizes accurate multistage positioning of the probe through detecting the positioning holes on the code wheel gear; the probe position is effectively limited by the rotation selecting feeding groove on the motor support, so that the positioning is stable, and the problem that in the prior art, the focus of the Raman spectrometer cannot be adjusted according to different conditions, and the proper positions of a sample and the laser focus of the Raman spectrometer cannot be ensured is effectively solved.
Description
Technical Field
The invention relates to the technical field of Raman spectrometers, in particular to an automatic focusing mechanism of a Raman spectrometer.
Background
In recent years, with the maturation of surface enhanced raman techniques, raman detection techniques are applied to more and more fields, especially in the fields of food detection, explosive detection, raw and auxiliary material detection of medicines, etc., and by some simple pretreatment, the raman detection instrument can rapidly detect illegal components such as illegal additives, pesticide residues, veterinary drug residues, etc. in foods. The Raman spectrometer is used as a rapid detection instrument, is more portable, and can be more conveniently applied to various use scenes. The existing Raman spectrometer needs to be aligned with a sample when in use, and the proper position of the sample and the laser focus of the Raman spectrometer is ensured, and if the sample cannot be well aligned with the Raman laser, the detection effect can be affected. According to practical application conditions, different samples are different in using containers, and the focus of the Raman spectrometer needs to be adjusted according to different conditions so as to achieve a good detection effect, so that the problems which are needed to be solved by the technicians in the field now include:
1. the Raman spectrometer probe can be automatically adjusted;
2. the positioning of the Raman spectrometer probe is accurate;
3. the raman spectrometer probe is positioned stably.
Disclosure of Invention
The invention aims to provide an automatic focusing mechanism of a Raman spectrometer, which solves the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: an automatic focusing mechanism of a Raman spectrometer comprises a motor bracket, a direct-current gear motor, a transmission gear rotating shaft bracket, a transmission gear, a coded disc gear, a probe, a reset detection photoelectric switch and a hole site detection photoelectric switch;
the direct-current speed reduction motor is fixed on the motor support, a driving gear is arranged at the output end of the direct-current speed reduction motor, the transmission gear rotating shaft support is fixed on the motor support, and the transmission gear is arranged on the transmission gear rotating shaft support and forms gear transmission with the driving gear; the utility model discloses a coded disc gear, including the coded disc gear, the hole site detection photoelectric switch, the coded disc gear rotates to be set up one side of motor support, the coded disc gear with drive gear forms gear drive, the one end of probe passes through rotatory feed mechanism activity setting at the inner periphery of coded disc gear, reset detection photoelectric switch and hole site detection photoelectric switch set up respectively in the both sides of probe, and reset detection photoelectric switch fixes on the motor support, the hole site detection photoelectric switch is fixed on the drive gear pivot support, be provided with position confirmation structure on the coded disc gear.
As a preferred embodiment of the invention, the rotary feeding mechanism comprises two positioning convex shafts, two rotary feeding grooves, two positioning grooves and a supporting ring, wherein the two positioning convex shafts are respectively and fixedly arranged on two sides of the probe at the inner part of the code wheel gear, the supporting ring is arranged between the probe and the code wheel gear, one side of the supporting ring is fixedly arranged on the motor bracket, the two rotary feeding grooves are respectively arranged on two sides of the supporting ring, the two positioning grooves are respectively arranged on two sides of the inner periphery of the code wheel gear, the two positioning convex shafts are respectively and movably inserted into the corresponding positioning grooves through the corresponding rotary feeding grooves, and the rotary feeding grooves are of multi-stage boss structures.
As a preferred embodiment of the invention, the position confirmation structure comprises a plurality of positioning holes and reset holes, wherein the positioning holes and the reset holes are formed in the surface of the code wheel gear in an annular array, and the reset holes are arranged on one side of the positioning holes.
As a preferred embodiment of the present invention, the code wheel gear is rotatably disposed outside the support ring by a bearing.
Compared with the prior art, the invention provides an automatic focusing mechanism of a Raman spectrometer, which has the following beneficial effects:
according to the automatic focusing mechanism of the Raman spectrometer, the gear is driven by the direct-current gear motor to realize quick automatic focusing of the probe; the photoelectric switch realizes accurate multistage positioning of the probe through detecting the positioning holes on the code wheel gear; the probe position is effectively limited by the rotation selecting feeding groove on the motor support, so that the positioning is stable, and the problem that in the prior art, the focus of the Raman spectrometer cannot be adjusted according to different conditions, and the proper positions of a sample and the laser focus of the Raman spectrometer cannot be ensured is effectively solved.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic perspective view of an automatic focusing mechanism of a Raman spectrometer according to the present invention;
FIG. 2 is a front elevation schematic side cross-sectional view of a Raman spectrometer autofocus mechanism according to the present invention;
FIG. 3 is a top perspective view of a front view motor mount of a Raman spectrometer autofocus mechanism of the present invention;
FIG. 4 is a schematic perspective view of a probe of an automatic focusing mechanism of a Raman spectrometer according to the present invention;
FIG. 5 is a schematic diagram of a code wheel gear of an automatic focusing mechanism of a Raman spectrometer in perspective;
FIG. 6 is a right side view of a Raman spectrometer autofocus mechanism according to the present invention; .
In the figure: 1. the device comprises a motor bracket, a direct current gear motor, a transmission gear rotating shaft bracket, a transmission gear, a code wheel gear, a probe, a reset detection photoelectric switch, a hole position detection photoelectric switch, a positioning hole, a reset hole, a rotary feeding groove, a positioning groove, a gear feature, a positioning protruding shaft, a driving gear and a supporting ring.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, or detachably connected, disposed, or integrally connected, disposed, for example; the model of the electric appliance provided by the invention is only used as a reference. It is possible for those skilled in the art to replace different types of electrical appliances having the same function according to actual use conditions, and it is possible for those skilled in the art to understand the specific meaning of the above terms in the present invention in a specific case.
Referring to fig. 1-6, the present invention provides a technical solution: an automatic focusing mechanism of a Raman spectrometer comprises a motor bracket 1, a direct-current gear motor 2, a transmission gear rotating shaft bracket 3, a transmission gear 4, a code wheel gear 5, a probe 6, a reset detection photoelectric switch 7 and a hole position detection photoelectric switch 8;
the direct-current gear motor 2 is fixed on the motor bracket 1 through a screw, a driving gear 15 is arranged at the output end of the direct-current gear motor 2, the transmission gear rotating shaft bracket 3 is fixed on the motor bracket 1, and the transmission gear 4 is arranged on the transmission gear rotating shaft bracket 3 and forms gear transmission with the driving gear 15; the code wheel gear 5 is rotatably arranged on one side of the motor bracket 1, the code wheel gear 5 and the transmission gear 4 form gear transmission through a gear feature 13 on the code wheel gear 5, one end of the probe 6 is movably arranged on the inner periphery of the code wheel gear 5 through a rotary feeding mechanism, the reset detection photoelectric switch 7 and the hole position detection photoelectric switch 8 are respectively arranged on two sides of the probe 6, the reset detection photoelectric switch 7 is fixed on the motor support 1, the hole position detection photoelectric switch 9 is fixed on the transmission gear rotating shaft support 3, and the code wheel gear 5 is provided with a position confirmation structure.
In this embodiment, the rotary feeding mechanism includes two positioning protruding shafts 14, two rotary feeding grooves 11, two positioning grooves 12 and a supporting ring 16, two positioning protruding shafts 14 are respectively and fixedly installed at two sides of the probe 6 located at the inner portion of the code wheel gear 5, the supporting ring 16 is arranged between the probe 6 and the code wheel gear 5, one side of the supporting ring 16 is fixedly installed on the motor bracket 1, two rotary feeding grooves 11 are respectively formed at two sides of the supporting ring 16, two positioning grooves 12 are respectively formed at two sides of the inner periphery of the code wheel gear 5, two positioning protruding shafts 14 are respectively and movably inserted into corresponding positioning grooves 12 through corresponding rotary feeding grooves 11, and the rotary feeding grooves 11 are of multi-stage boss structures.
In this embodiment, the position confirmation structure includes a plurality of positioning holes 9 and a plurality of reset holes 10, the plurality of positioning holes 9 and the plurality of reset holes 10 are formed on the surface of the code wheel gear 5 in a ring array, and the plurality of reset holes 10 are disposed on one side of the plurality of positioning holes 9.
In this embodiment, the code wheel gear 5 is rotatably disposed outside the support ring 16 by a bearing.
When the direct current gear motor 2 rotates positively, the code wheel gear 5 is driven to rotate anticlockwise until the reset detection photoelectric switch 7 detects a reset hole 10 on the code wheel gear, the direct current gear motor 2 stops rotating, the probe 6 retracts to reach a reset position at the moment, then the direct current gear motor 2 rotates reversely, the code wheel gear 5 is driven to rotate clockwise, the hole position detection photoelectric switch 8 can detect a positioning hole 9 arranged on the code wheel gear 5, and the probe 6 sequentially corresponds to different positions from retracting to extending along with the rotation of the code wheel gear.
While the fundamental and principal features of the invention and advantages of the invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (3)
1. An automatic focusing mechanism of a Raman spectrometer, which is characterized in that: the device comprises a motor bracket, a direct-current gear motor, a transmission gear rotating shaft bracket, a transmission gear, a coded disc gear, a probe, a reset detection photoelectric switch and a hole site detection photoelectric switch;
the direct-current speed reduction motor is fixed on the motor support, a driving gear is arranged at the output end of the direct-current speed reduction motor, the transmission gear rotating shaft support is fixed on the motor support, and the transmission gear is arranged on the transmission gear rotating shaft support and forms gear transmission with the driving gear; the code wheel gear is rotatably arranged on one side of the motor support, the code wheel gear and the transmission gear form gear transmission, one end of the probe is movably arranged on the inner periphery of the code wheel gear through the rotary feeding mechanism, the reset detection photoelectric switch and the hole position detection photoelectric switch are respectively arranged on two sides of the probe, the reset detection photoelectric switch is fixed on the motor support, the hole position detection photoelectric switch is fixed on the transmission gear rotating shaft support, and the code wheel gear is provided with a position confirmation structure;
the rotary feeding mechanism comprises two positioning convex shafts, two rotary feeding grooves, two positioning grooves and a supporting ring, wherein the two positioning convex shafts are respectively and fixedly installed on two sides of the inner part of the code wheel gear, the supporting ring is arranged between the probe and the code wheel gear, one side of the supporting ring is fixedly installed on the motor support, the two rotary feeding grooves are respectively formed in two sides of the supporting ring, the two positioning grooves are respectively formed in two sides of the inner periphery of the code wheel gear, the two positioning convex shafts are respectively and movably inserted into the corresponding positioning grooves through the corresponding rotary feeding grooves, and the rotary feeding grooves are of multi-stage boss structures.
2. A raman spectrometer autofocus mechanism according to claim 1, wherein: the position confirmation structure comprises a plurality of positioning holes and reset holes, wherein the positioning holes and the reset holes are formed in the surface of the code wheel gear in an annular array mode, and the reset holes are formed in one sides of the positioning holes.
3. A raman spectrometer autofocus mechanism according to claim 1 or 2, characterized in that: the code wheel gear is rotatably arranged on the outer side of the supporting ring through a bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210152729.5A CN114371131B (en) | 2022-02-18 | 2022-02-18 | Automatic focusing mechanism of Raman spectrometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210152729.5A CN114371131B (en) | 2022-02-18 | 2022-02-18 | Automatic focusing mechanism of Raman spectrometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114371131A CN114371131A (en) | 2022-04-19 |
| CN114371131B true CN114371131B (en) | 2024-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210152729.5A Active CN114371131B (en) | 2022-02-18 | 2022-02-18 | Automatic focusing mechanism of Raman spectrometer |
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| Country | Link |
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| CN (1) | CN114371131B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5715101A (en) * | 1995-04-26 | 1998-02-03 | Asahi Kogaku Kogyo K.K. | Focusing apparatus for a surveying instrument |
| JPH10170801A (en) * | 1996-12-12 | 1998-06-26 | Asahi Optical Co Ltd | Driving device for zoom lens barrel |
| US7595875B1 (en) * | 2005-11-09 | 2009-09-29 | Wavefront Research, Inc. | Alignment systems for spectrometers |
| CN102621123A (en) * | 2012-03-23 | 2012-08-01 | 哈尔滨工业大学（威海） | Focusing device of handheld Raman spectrometer |
| CN104089943A (en) * | 2014-07-17 | 2014-10-08 | 厦门大学 | Multi-channel focusable sample tank implementing raman spectrum detection |
| CN105259358A (en) * | 2015-11-10 | 2016-01-20 | 中国科学院重庆绿色智能技术研究院 | Multi-channel rotary type Raman spectroscopy detection sample pool device and detecting method thereof |
| CN106383105A (en) * | 2016-08-29 | 2017-02-08 | 上海交通大学 | Raman spectrum measuring device and method capable of automatically adjusting distance between device and measured sample |
| CN206906249U (en) * | 2017-11-14 | 2018-01-19 | 吉林大学 | A kind of automatic focusing device applied in industrial online LIBS detections |
| CN111879751A (en) * | 2020-07-30 | 2020-11-03 | 上海化工院检测有限公司 | Trace sample detection device for enhancing Raman spectrum signals |
| WO2021127903A1 (en) * | 2019-12-23 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera system and mobile terminal |
-
2022
- 2022-02-18 CN CN202210152729.5A patent/CN114371131B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5715101A (en) * | 1995-04-26 | 1998-02-03 | Asahi Kogaku Kogyo K.K. | Focusing apparatus for a surveying instrument |
| JPH10170801A (en) * | 1996-12-12 | 1998-06-26 | Asahi Optical Co Ltd | Driving device for zoom lens barrel |
| US7595875B1 (en) * | 2005-11-09 | 2009-09-29 | Wavefront Research, Inc. | Alignment systems for spectrometers |
| CN102621123A (en) * | 2012-03-23 | 2012-08-01 | 哈尔滨工业大学（威海） | Focusing device of handheld Raman spectrometer |
| CN104089943A (en) * | 2014-07-17 | 2014-10-08 | 厦门大学 | Multi-channel focusable sample tank implementing raman spectrum detection |
| CN105259358A (en) * | 2015-11-10 | 2016-01-20 | 中国科学院重庆绿色智能技术研究院 | Multi-channel rotary type Raman spectroscopy detection sample pool device and detecting method thereof |
| CN106383105A (en) * | 2016-08-29 | 2017-02-08 | 上海交通大学 | Raman spectrum measuring device and method capable of automatically adjusting distance between device and measured sample |
| CN206906249U (en) * | 2017-11-14 | 2018-01-19 | 吉林大学 | A kind of automatic focusing device applied in industrial online LIBS detections |
| WO2021127903A1 (en) * | 2019-12-23 | 2021-07-01 | 诚瑞光学(常州)股份有限公司 | Camera system and mobile terminal |
| CN111879751A (en) * | 2020-07-30 | 2020-11-03 | 上海化工院检测有限公司 | Trace sample detection device for enhancing Raman spectrum signals |
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|---|---|
| CN114371131A (en) | 2022-04-19 |
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