CN117571656B - High-precision switching spectrum acquisition system - Google Patents
High-precision switching spectrum acquisition system Download PDFInfo
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- CN117571656B CN117571656B CN202311561993.5A CN202311561993A CN117571656B CN 117571656 B CN117571656 B CN 117571656B CN 202311561993 A CN202311561993 A CN 202311561993A CN 117571656 B CN117571656 B CN 117571656B
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- 238000001228 spectrum Methods 0.000 title claims abstract description 18
- 230000000670 limiting effect Effects 0.000 claims abstract description 55
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 230000033001 locomotion Effects 0.000 claims description 30
- 238000006243 chemical reaction Methods 0.000 claims description 20
- 238000005299 abrasion Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 4
- 239000000523 sample Substances 0.000 description 23
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012468 concentrated sample Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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- 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/359—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using near infrared light
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- 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
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The application provides a high-precision switching spectrum acquisition system which comprises a light source, a spectrometer and a bracket positioned between the light source and the spectrometer, wherein the bracket is arranged on the light source; the sample rack is fixedly provided with a collection hole and a reference hole through which a sample can be communicated; the movable light switching device comprises a movable light switching mechanism, a first limiting unit and a second limiting unit, wherein the movable light switching mechanism can move relative to the support, and the movable light switching mechanism is provided with a first limiting position and a second limiting position under the limiting action of the first limiting unit and the second limiting unit respectively. The first limiting unit and the second limiting unit can limit the moving light switching mechanism, so that errors of transmission gaps among moving parts are avoided, and the position repetition precision is improved; the spring piece is pre-pressed, so that the influence of precision caused by vibration of the machine is avoided; the reference component in the collection hole (the sample in the sample cell) and the reference hole are fixed, so that the precision problem caused by the pulling of the liquid path and the abrasion problem of the liquid path are avoided.
Description
Technical Field
The application relates to the field of near infrared analysis instruments, in particular to a high-precision switching spectrum acquisition system.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
The existing near infrared spectrum analyzer adopts the following modes: the spectrometer is arranged opposite to the light source, and light emitted by the light source is transmitted into the spectrometer after passing through the sample or the standard sheet; a movable part is arranged between the light source and the spectrometer, the movable part is provided with four positions of a concentrated sample grade, a reference position, a standard sheet position and a dark current position, and the spectrometer is used for collecting sample spectrum, collecting reference, collecting dark current and collecting standard by transversely moving the assembly.
In the existing method, the reference position and the sample position are switched, and the reference position and the sample position need to be moved (a gear rack, a screw rod, a crank sliding block mechanism and the like) and are influenced by the precision of a moving part, so that the measurement precision is not high, the abrasion problem of an optical path is involved in the movement of the sample, and the use risk of the whole machine is improved.
It should be noted that the foregoing description of the background art is only for the purpose of providing a clear and complete description of the technical solution of the present application and is presented for the convenience of understanding by those skilled in the art. The above-described solutions are not considered to be known to the person skilled in the art simply because they are set forth in the background of the application section.
Disclosure of Invention
Based on the defects in the prior art, the high-precision switching spectrum acquisition system is used for solving the detection precision problem in the prior art.
In order to achieve the above object, the present application provides the following technical solutions: a high-precision switching spectrum acquisition system comprises a light source, a spectrometer and a bracket positioned between the light source and the spectrometer; the sample rack is fixedly provided with a collection hole and a reference hole through which a sample can be communicated; the support is also fixedly provided with a first fixed light conversion mechanism and a second fixed light conversion mechanism, the support is also provided with a switching device, the switching device comprises a moving light switching mechanism which can move relative to the support, a first limiting unit and a second limiting unit, the moving light switching mechanism is respectively provided with a first limit position and a second limit position under the limiting action of the first limiting unit and the second limiting unit, when the moving light switching mechanism is positioned at a first limit position, the moving light switching mechanism is opposite to the first fixed light switching mechanism, and light rays emitted from the light source can enter the spectrometer after passing through the collecting hole through the moving light switching mechanism and the first fixed light switching mechanism; when the moving light switching mechanism is positioned at a second limiting position, the moving light switching mechanism is opposite to the second fixed light switching mechanism, and light rays emitted from the light source can enter the spectrometer after passing through the reference hole through the moving light switching mechanism and the second fixed light switching mechanism.
Preferably, the moving light switching mechanism further has a third operating position in which the moving light switching mechanism is not in a state of being opposed to either of the second fixed light switching mechanism and the second fixed light switching mechanism.
Preferably, the moving light switching mechanism includes a first moving mirror and a second moving mirror, and a moving unit for driving the first moving mirror and the second moving mirror to move synchronously.
Preferably, the light inlet of the spectrometer and the light outlet of the light source are located on a first axis, and the collection hole, the reference hole, the first fixed light conversion mechanism and the second fixed light conversion mechanism are symmetrical with respect to the first axis.
Preferably, the first moving mirror and the second moving mirror are symmetrical with respect to a second axis, and the first fixed light conversion mechanism comprises two first fixed mirrors which are respectively positioned at two sides of the moving light switching mechanism along the first axis direction and symmetrical with respect to the second axis; the second fixed light conversion mechanism comprises two second fixed reflectors which are respectively positioned at two sides of the moving light switching mechanism along the first axis direction and are symmetrical relative to the second axis.
Preferably, the motion unit comprises a motor, a motion frame, a motion block which can move relative to the motion frame under the drive of the motor, and two connecting rods which are respectively arranged at two sides of the motion block, wherein each connecting rod is provided with a rotating shaft which can rotate relative to the connecting rod, each rotating shaft is rotatably arranged on the motion frame, and the first motion reflecting mirror and the second motion reflecting mirror are respectively arranged on the two rotating shafts;
the first limiting unit and the second limiting unit are used for limiting the rotation angles of the two rotating shafts, so that any one rotating shaft has two limiting positions.
Preferably, the first limiting unit and the second limiting unit are jackscrews.
Preferably, a spring piece is arranged on the moving block, and the two connecting rods are respectively connected with two ends of the spring piece.
Preferably, the motor comprises a motor shaft, and the moving block is provided with a moving groove for one end of the motor shaft to pass through.
Preferably, the motor further comprises a transmission rod arranged on the motor shaft, the motion unit further comprises at least two sensors positioned on two sides of the transmission rod, and the two sensors respectively collide with the transmission rod when in a first limit position or a second limit position.
By the technical scheme, the application has the beneficial effects that:
1. The first limiting unit and the second limiting unit can limit the moving light switching mechanism, so that errors of transmission gaps between moving parts are avoided, and the position repetition precision is improved;
2. the spring piece is pre-pressed, so that the influence of precision caused by vibration of the machine is avoided;
3. The reference component in the collection hole (the sample in the sample cell) and the reference hole are fixed, so that the precision problem caused by the pulling of the liquid path and the abrasion problem of the liquid path are avoided.
Specific embodiments of the application are disclosed in detail below with reference to the following description and the accompanying drawings, indicating the manner in which the principles of the application may be employed. It should be understood that the embodiments of the application are not limited in scope thereby. The embodiments of the application include many variations, modifications and equivalents within the spirit and scope of the appended claims.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments in combination with or instead of the features of the other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.
Drawings
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, proportional sizes, and the like of the respective components in the drawings are merely illustrative for aiding in understanding the present application, and are not particularly limited. Those skilled in the art with access to the teachings of the present application can select a variety of possible shapes and scale sizes to practice the present application as the case may be. In the drawings:
fig. 1 shows a schematic structural diagram of a high-precision switching spectrum acquisition system according to an embodiment of the present application, where the moving light switching mechanism is in a first working position.
Fig. 2 is a schematic structural diagram of a high-precision switching spectrum acquisition system in a second working position according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of a high-precision switching spectrum acquisition system in a third working position according to an embodiment of the present application.
Fig. 4 shows a schematic structural view of a sample holder in an embodiment of the present application.
Fig. 5 shows a schematic structural diagram of a switching device in an embodiment of the application.
The reference numerals of the above figures are: 1. a light source; 2. a spectrometer; 3. a bracket; 4. a sample holder; 41. a collection hole; 42. a reference hole; 5. a first fixed light conversion mechanism; 51. a first fixed mirror; 6. a second fixed light conversion mechanism; 61. a second fixed mirror; 7. a switching device; 71. a moving light switching mechanism; 711. a first moving mirror; 712. a second moving mirror; 713. a movement unit; 7131. a motor; 7132. a motion frame; 7133. a moving block; 7134. a connecting rod; 7135. a rotation shaft; 7136. a spring piece; 72. a first limit unit; 73. a second limit unit; 8. a sensor; 9. a collimator.
Detailed Description
In order to make the technical solution of the present application better understood by those skilled in the art, the technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, shall fall within the scope of the application.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.
It should be noted that, in the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and to distinguish between similar objects, and there is no order of preference between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of the application, unless otherwise indicated, the inclusion of "a plurality" is defined as two or more.
Referring to fig. 1 and 2, the embodiment of the application discloses a high-precision switching spectrum acquisition system, which comprises a light source 1, a spectrometer 2 and a bracket 3 positioned between the light source 1 and the spectrometer 2; a sample rack 4 is fixedly arranged on the bracket 3, and the sample rack 4 is provided with a collection hole 41 and a reference hole 42 which can be communicated with a sample; the bracket 3 is also fixedly provided with a first fixed light conversion mechanism and a second fixed light conversion mechanism 6, the bracket 3 is also provided with a switching device 7, the switching device 7 comprises a motor 7131, a moving light switching mechanism 71 which can move under the driving action of the motor 7131, a first limiting unit 72 and a second limiting unit 73, the moving light switching mechanism 71 respectively has a corresponding first limit position and a corresponding second limit position under the limiting action of the first limiting unit 72 and the second limiting unit 73, when the moving light switching mechanism 71 is in the first limit position, the moving light switching mechanism 71 is opposite to the first fixed light switching mechanism, and light emitted from the light source 1 can enter the spectrometer 2 after passing through the collecting hole 41 through the moving light switching mechanism 71 and the first fixed light conversion mechanism; when the moving light switching mechanism 71 is at the second limit position, the moving light switching mechanism 71 is opposite to the second fixed light switching mechanism, and the light emitted from the light source 1 can enter the spectrometer 2 after passing through the reference hole 42 by the moving light switching mechanism 71 and the second fixed light switching mechanism 6.
With the above structure, the collected sample and the collected reference are set at the two extreme positions of the moving light switching mechanism 71 by the first limiting unit 72 and the second limiting unit 73 due to high precision requirements of the reference and the sample position. In the first extreme position, the light source 1, the moving light switching mechanism 71, the first fixed light switching mechanism, the collection hole 41, and the spectrometer 2 form a complete light path. In the second extreme position, the light source 1, the moving light switching mechanism 71, the second fixed light switching mechanism, the reference hole 42, and the spectrometer 2 form a complete light path.
Referring to fig. 1 and 2, in the present embodiment, a spectrometer 2, a holder 3, and a light source 1 are arranged in order from left to right. Correspondingly, the light source 1 emits light from right to left up to the input end of the spectrometer 2.
Referring to fig. 4, a sample holder 4 is fixedly provided on the holder 3. The sample holder 4 is provided with a collection well 41 and a reference well 42. The collection holes 41 and the reference holes 42 are arranged at intervals in the vertical direction. Wherein the collection well 41 may be in communication with a sample cell in which the sample is disposed. The reference well 42 may be under vacuum to facilitate reference sampling. In this embodiment, the collection well 41 is located above the reference well 42. Accordingly, the first fixed light conversion mechanism is located above the second fixed light conversion mechanism 6. Of course, in other alternative embodiments, the collection well 41 may be located below the reference well 42. Or the collection hole 41 and the reference hole 42 may be located at corresponding positions according to actual needs. Accordingly, the first fixed light conversion mechanism and the second fixed light conversion mechanism 6 can also be adjusted according to the positions of the collection hole 41 and the reference hole 42.
As shown in connection with fig. 5, the switching device 7 may include a moving light switching mechanism 71 movable with respect to the bracket 3, a first limiting unit 72, and a second limiting unit 73. The moving light switching mechanism 71 can move relative to the bracket 3 and is in a first limit position under the limit action of the first limit unit 72. The moving light switching mechanism 71 can move relative to the bracket 3 and is in a second limit position under the limit action of the second limit unit 73.
In the present embodiment, the output end of the light source 1 and the input end of the spectrometer 2 are positioned on the same straight line (first axis). The moving light switching mechanism 71 includes a first moving mirror 711 and a second moving mirror 712. The first moving mirror 711 and the second moving mirror 712 are mirror symmetric with respect to the second axis. Wherein the first axis and the second axis are perpendicular to each other.
The first moving mirror 711 and the second moving mirror 712 can be rotated in synchronization with the moving unit 713. The motion unit 713 includes a motor 7131, a motion frame 7132, a motion block 7133 that can move relative to the motion frame 7132 under the drive of the motor 7131, and two connecting rods 7134 that are respectively disposed at two sides of the motion block 7133, each connecting rod 7134 is provided with a rotation shaft 7135 that can rotate relative to the connecting rod 7134, each rotation shaft 7135 is rotatably disposed on the motion frame 7132, and the first motion mirror 711 and the second motion mirror 712 are respectively disposed on the two rotation shafts 7135. In fig. 1 and 2, the first moving mirror 711 and the second moving mirror 712 are provided at front ends of the two rotation shafts 7135, respectively. In fig. 5, the motor 7131, the moving frame 7132, and the link 7134 are all located at the rear end of the rotation shaft 7135.
The first limiting unit 72 and the second limiting unit 73 are used to limit the rotation angle of the two rotation shafts 7135, so that any one of the rotation shafts 7135 has two limit positions. In this embodiment, the two links 7134, the two rotation shafts 7135, the moving block 7133, and the like may be mirror-symmetrical along the second axis. The number of the first limiting units 72 and the second limiting units 73 is two. The two first limiting units 72 are provided at the moving frames 7132 corresponding to the two rotation shafts 7135 or the two links 7134, respectively. The two second limiting units 73 are provided at the moving frames 7132 corresponding to the two rotation shafts 7135 or the two links 7134, respectively. When the first moving mirror 711 and the second moving mirror 712 are rotated to the limit positions of fig. 1, the first limiting unit 72 limits the first moving mirror 711 and the second moving mirror 712 to the limit positions. When the first moving mirror 711 and the second moving mirror 712 are rotated to the limit positions of fig. 2, the second limiting unit 73 limits the first moving mirror 711 and the second moving mirror 712 to the limit positions.
Preferably, the motor 7131 includes a motor 7131 shaft, and the output shaft of the motor 7131 is formed by an eccentric mechanism. The moving block 7133 is provided with a moving groove through which one end of the shaft of the motor 7131 passes. The moving block 7133 can move along the vertical direction under the driving action of the motor 7131 shaft of the motor 7131, thereby driving the connecting rod 7134 to move upwards, and the rotating shaft 7135 can rotate relative to the moving frame 7132 under the driving action of the connecting rod 7134.
The first and second stopper units 72 and 73 may include a top thread having an adjusting function. The first limiting unit 72 may abut against the rotation shaft 7135 or the link 7134 through the adjusted jack, thereby realizing that the rotation shaft 7135 (the moving light switching mechanism 71) is in the first working position. The second limiting unit 73 may abut against the rotation shaft 7135 or the link 7134 through the adjusted jack, thereby realizing that the rotation shaft 7135 (the moving light switching mechanism 71) is in the second working position.
Preferably, the moving block 7133 is provided with a spring piece 7136, and two connecting rods 7134 are respectively connected to two ends of the spring piece 7136. The midpoint of the spring plate 7136 may be connected to the moving block 7133. In either the first or second operating position, the first or second stopper 72, 73 is in close contact with the rotary shaft 7135. At this time, the margin of rotation of the motor 7131 may be partially or entirely offset by the spring piece 7136.
The motor 7131 further includes a transmission rod disposed on the shaft of the motor 7131, and the motion unit 713 further includes at least two sensors 8, where the two sensors 8 respectively collide with the transmission rod when in the first limit position or the second limit position.
When the rotation shaft 7135 swings to reach two limit positions and the spring piece 7136 is preloaded for a certain distance, one of the two sensors 8 is triggered, so that the moving light switching mechanism 71 can be tightly attached to the first limit unit 72 or the second limit unit 73 even under the vibration condition due to the action of the preload force when the two limit positions swing.
The first fixed light switching mechanism includes two first fixed mirrors 51 symmetrical with respect to the second axis, which are located on both sides of the moving light switching mechanism 71 in the first axis direction, respectively. When the moving light switching mechanism 71 (the first moving mirror 711 and the second moving mirror 712) is at the first limit position, the light emitted by the light source 1 is received by the spectrometer 2 after passing through the second moving mirror 712, one first fixed mirror 51, the collection hole 41, the other first fixed mirror 51, and the first moving mirror 711 in this order. At this point, it can be used to collect the spectrum of the sample. When the moving light switching mechanism 71 (the first moving mirror 711 and the second moving mirror 712) is in the second limit position, the light emitted from the light source 1 is received by the spectrometer 2 after passing through, in order, the second moving mirror 712, one first fixed mirror 51, the reference hole 42, the other first fixed mirror 51, and the first moving mirror 711. At this time, reference sampling may be performed.
In the present embodiment, the first moving mirror 711, the second moving mirror 712, the first fixed mirror 51, and the second fixed mirror 61 are all plane mirrors. Of course, in other alternative embodiments, the first moving mirror 711, the second moving mirror 712, the first fixed mirror 51, and the second fixed mirror 61 may be other optical devices having an optical path switching function as needed.
In another alternative embodiment, as shown in fig. 3, the moving light switching mechanism 71 further has a third operating position, in which the moving light switching mechanism 71 is not in a state of being opposed to either of the second fixed light switching mechanism and the second fixed light switching mechanism. At this time, dark current collection may be performed. In view of the low accuracy requirement in this state, the number of steps of the motor 7131 may be fixed by the motor 7131 to perform the control operation.
In particular, in order to improve the accuracy, collimators 9 may be provided at both the output of the light source 1 and the input of the spectrometer 2.
The application has the following advantages:
1. The first limiting unit 72 and the second limiting unit 73 can limit the moving light switching mechanism 71, so that errors of transmission gaps between moving parts are avoided, and the position repetition precision is improved;
2. The spring piece 7136 is pre-pressed, so that the influence of precision caused by machine vibration is avoided;
3. The reference assembly in the collection well 41 (sample in the sample cell) and the reference well 42 is stationary, avoiding the problems of accuracy due to the pulling of the fluid path and the abrasion of the fluid path.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but instead should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are incorporated herein by reference for the purpose of completeness. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to forego such subject matter, nor should the applicant be deemed to have such subject matter not considered to be part of the subject matter of the disclosed application.
Claims (6)
1. The high-precision switching spectrum acquisition system is characterized by comprising a light source, a spectrometer and a bracket positioned between the light source and the spectrometer; the sample rack is fixedly provided with a collection hole and a reference hole through which a sample can be communicated; the support is also fixedly provided with a first fixed light conversion mechanism and a second fixed light conversion mechanism, the support is also provided with a switching device, the switching device comprises a moving light switching mechanism which can move relative to the support, a first limiting unit and a second limiting unit, the moving light switching mechanism is respectively provided with a first limit position and a second limit position under the limiting action of the first limiting unit and the second limiting unit, when the moving light switching mechanism is positioned at a first limit position, the moving light switching mechanism is opposite to the first fixed light conversion mechanism, and light rays emitted from the light source can enter the spectrometer after passing through the collecting hole through the moving light switching mechanism and the first fixed light conversion mechanism; when the moving light switching mechanism is in a second limit position, the moving light switching mechanism is opposite to the second fixed light switching mechanism, light emitted from the light source can enter the spectrometer after passing through the reference hole through the moving light switching mechanism and the second fixed light switching mechanism, the moving light switching mechanism also has a third working position, when the moving light switching mechanism is in the third working position, any one of the moving light switching mechanism and the second fixed light switching mechanism is not in a relative state, the moving light switching mechanism comprises a first moving reflector and a second moving reflector and a moving unit for driving the first moving reflector and the second moving reflector to synchronously move, a light inlet of the spectrometer and a light outlet of the light source are positioned on a first axis, the acquisition hole and the reference hole, the first fixed light switching mechanism and the second fixed light switching mechanism are symmetrical relative to the first axis, the first moving reflector and the second moving reflector are symmetrical relative to the first axis, and the second moving reflector are symmetrical relative to the second axis, and the first moving reflector and the second fixed reflector are symmetrical relative to the second axis, and the second moving reflector and the first fixed reflector and the second fixed reflector are symmetrical to each other along the second axis; the second fixed light conversion mechanism comprises two second fixed reflectors which are respectively positioned at two sides of the moving light switching mechanism along the first axis direction and are symmetrical relative to the second axis.
2. The high-precision switching spectrum acquisition system according to claim 1, wherein the motion unit comprises a motor, a motion frame, a motion block capable of moving relative to the motion frame under the drive of the motor, and two connecting rods respectively arranged at two sides of the motion block, each connecting rod is provided with a rotating shaft capable of rotating relative to the connecting rod, each rotating shaft is rotatably arranged on the motion frame, and the first motion reflecting mirror and the second motion reflecting mirror are respectively arranged on the two rotating shafts;
the first limiting unit and the second limiting unit are used for limiting the rotation angles of the two rotating shafts, so that any one rotating shaft has two limiting positions.
3. The high precision switching spectrum acquisition system of claim 2, wherein the first and second limiting units are jackscrews.
4. The high-precision switching spectrum acquisition system according to claim 2, wherein a spring piece is arranged on the moving block, and the two connecting rods are respectively connected with two ends of the spring piece.
5. The high-precision switching spectrum acquisition system according to claim 2, wherein the motor comprises a motor shaft, and the moving block is provided with a moving groove for one end of the motor shaft to pass through.
6. The high-precision switching spectrum acquisition system according to claim 2, wherein the motor further comprises a transmission rod arranged on a motor shaft, the motion unit further comprises at least two sensors positioned on two sides of the transmission rod, and the two sensors respectively collide with the transmission rod when in a first limit position or a second limit position.
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| CN202311561993.5A CN117571656B (en) | 2023-11-22 | 2023-11-22 | High-precision switching spectrum acquisition system |
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| CN202311561993.5A CN117571656B (en) | 2023-11-22 | 2023-11-22 | High-precision switching spectrum acquisition system |
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| CN109520987A (en) * | 2018-12-19 | 2019-03-26 | 苏州汶颢微流控技术股份有限公司 | ATP fluorescence detector |
| CN213301472U (en) * | 2020-11-05 | 2021-05-28 | 无锡迅杰光远科技有限公司 | Automatic change spectrum collection system of demarcation |
| CN214794819U (en) * | 2021-03-11 | 2021-11-19 | 郑洪� | A micropore board bracket for improving data acquisition precision of ELIASA |
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