Fluorescence spectrometer

Abstract

The utility model discloses a fluorescence spectrometer, which relates to the field of spectral measurement and is used for measuring the intensities of different wavelength positions of a spectrum of an object to be measured. The object placing table is transversely arranged in the shell, an observation window is formed in the object placing table, and the object to be detected is placed on the observation window; comprising an X-ray exciter, a light filtering assembly and a motor bidirectional driving assembly. The light filtering assembly comprises a first sliding block, a second sliding block and a light filter; a plurality of light filtering holes are uniformly formed in the first sliding block, and the light filters are mounted in the light filtering holes; a plurality of collimation holes with different diameters are formed in the second sliding block, the X-ray exciter, the first sliding block and the second sliding block are sequentially arranged below the observation window in an overlapped mode, and the motor bidirectional driving assembly drives the first sliding block and the second sliding block to move. The motor bidirectional driving assembly drives the appropriate optical filter to be aligned with the collimation hole, and the accuracy of the measurement result is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of spectral measurement, and in particular to a fluorescence spectrometer. Background Technology

[0002] A fluorescence spectrometer, also known as a fluorescence spectrophotometer, is an instrument for qualitative and quantitative analysis. Through detection using a fluorescence spectrometer, information can be obtained regarding the excitation spectrum, emission spectrum, quantum yield, fluorescence intensity, fluorescence lifetime, Stokes shift, fluorescence polarization and depolarization characteristics, and fluorescence quenching. Different filters are often required for spectral measurements of different analytes, and the required collimation aperture also varies. In current technology, when measuring different items, operators manually change the filters and align the X-ray exciter, the required filter, and the collimation aperture. However, manual operation is time-consuming and labor-intensive, and errors can occur during alignment, leading to inaccurate measurement results. Therefore, there is an urgent need to design a fluorescence spectrometer to solve these problems. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a fluorescence spectrometer that addresses the shortcomings of the prior art, reduces the workload of operators in multiple alignments, and significantly improves the accuracy of measurement results.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A fluorescence spectrometer for measuring the intensity of different wavelengths of a test object's spectrum; comprising a housing and a stage, the stage being horizontally disposed inside the housing, with an observation window on the stage, on which the test object is placed; comprising an X-ray exciter, a filter assembly, and a bidirectional motor drive assembly; the filter assembly comprising a first slider, a second slider, and a filter; the first slider having multiple uniformly distributed filter holes, with the filter installed within each filter hole; the second slider having multiple collimation holes of different diameters; the X-ray exciter, the first slider, and the second slider being sequentially overlapped below the observation window, and the bidirectional motor drive assembly driving the first slider and the second slider to move respectively. It also includes a detector disposed below the observation window; light emitted from the X-ray exciter passes sequentially through the filter, the collimation holes, and the test object, and is then reflected onto the detector. The reflected light is analyzed on the detector's spectrum.

[0006] This utility model's bidirectional motor drive assembly moves the first and second sliders, allowing for the selection of appropriate filters and collimation holes for alignment. This reduces the workload of operators performing multiple alignments and significantly improves the accuracy of measurement results.

[0007] As a further preferred embodiment of this invention, the bidirectional motor drive assembly includes a first stepper motor and a second stepper motor; the first stepper motor is connected to the first slider, and the second stepper motor is connected to the second slider; both the first stepper motor and the second stepper motor are linear stepper motors. The first stepper motor drives the first slider to reciprocate, and the second stepper motor drives the second slider to reciprocate. The first and second sliders overlap each other, and appropriate collimation holes and filter holes are selected to align with the X-ray emitter to adapt to the testing requirements of different analytes.

[0008] As a further preferred embodiment of this invention, the top of the first slider is provided with a groove; the bottom of the second slider is movably engaged within the groove. The groove on the top of the first slider runs along its length, and the second slider is directly installed within the groove, facilitating alignment of the first and second sliders and further reducing measurement errors.

[0009] As a further preferred embodiment of this invention, the apertures of the plurality of filter holes are equal, and the apertures of the collimating holes are all less than or equal to the apertures of the filter holes. The second slider is provided with a plurality of collimating holes of different sizes, adaptable to objects of various materials and shapes. The filter holes are of the same size, facilitating the processing of the second slider and the placement of the filters. The filters are made of various materials, and the filter material within each filter hole is different, adaptable to the detection of various substances.

[0010] As a further preferred embodiment of this invention, a Mylar membrane is also included, which is disposed on the observation window. The Mylar membrane is mainly used to prevent the object to be measured from falling into the interior of the spectrometer and causing damage to the spectrometer.

[0011] It also includes a controller, which is electrically connected to the X-ray exciter, the first stepper motor, the second stepper motor, and the detector. The controller coordinates and controls the X-ray exciter, the first stepper motor, the second stepper motor, and the detector to achieve automation, further increasing testing efficiency and accuracy.

[0012] As a further preferred embodiment of this invention, a cooling fan is also included, which is disposed on the back of the housing. The X-ray exciter generates a large amount of heat during use; the cooling fan, disposed on the back of the housing, dissipates heat from the instruments inside the housing, preventing damage to the instruments at high temperatures.

[0013] As a further preferred embodiment of this invention, the top cover of the housing is provided with a handle. The interior of the housing is an opaque, sealed space, and the top is provided with a top cover. The top cover is located at the top of the housing and is provided with a handle for convenient opening and closing during use.

[0014] This utility model has the following beneficial effects:

[0015] 1. The motor of this utility model uses a bidirectional drive assembly to drive the first and second sliders to move. According to the characteristics of the object to be measured, when the first and second sliders move to the appropriate position, the corresponding filters and collimation holes are aligned. The laser emitted by the X-ray exciter passes through the filters and collimation holes in sequence and irradiates the object to be measured. Then, the laser is reflected by the object to be measured onto the detector for corresponding spectral analysis. This reduces the workload of operators in aligning the components multiple times and greatly improves the accuracy of the measurement results.

[0016] 2. The observation window of this utility model is provided with a Mylar membrane, which is used to seal the sample together with the sample cup. The Mylar membrane is a polyester film that has both light transmission properties and can prevent the substance to be tested from falling into the X-ray hole and causing damage to the measuring instrument.

[0017] 3. The back of the housing of this utility model is equipped with a cooling fan. The X exciter will generate a lot of heat during use. The cooling fan accelerates the air circulation and heat exchange inside and outside the housing, efficiently dissipating heat and cooling the X exciter. It is simple and practical. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0020] Figure 3 This is a top view of the internal structure of this utility model;

[0021] Figure 4 This is a front view of the internal structure of this utility model.

[0022] It includes: 1. Housing; 2. Stage; 3. Observation window; 4. Handle; 5. X-ray exciter; 6. Filter assembly; 61. First slider; 62. Second slider; 63. Filter aperture; 64. Collimation aperture; 7. Bidirectional motor drive assembly; 71. First stepper motor; 72. Second stepper motor; 8. Detector. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific preferred embodiments.

[0024] In the description of this utility model, it should be understood that the terms "left side," "right side," "upper part," "lower part," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. "First," "second," etc., do not indicate the importance of the components, and therefore should not be construed as a limitation of this utility model. The specific dimensions used in this embodiment are only for illustrating the technical solution and do not limit the protection scope of this utility model.

[0025] like Figure 1-4 As shown, a fluorescence spectrometer includes a housing 1 and a stage 2. The stage 2 is horizontally disposed inside the housing 1, and an observation window 3 is provided on the stage 2. The object to be measured is placed on the observation window 3. The spectrometer includes an X-ray exciter 5, a filter assembly 6, and a bidirectional motor drive assembly 7. The filter assembly 6 includes a first slider 61, a second slider 62, and a filter. The first slider 61 has a plurality of filter holes 63 evenly distributed on it, and the filter is installed in the filter holes 63. The second slider 62 has a plurality of collimation holes 64 of different diameters. The X-ray exciter 5, the first slider 61, and the second slider 62 are sequentially overlapped below the observation window 3, and the bidirectional motor drive assembly 7 drives the first slider 61 and the second slider 62 to move respectively.

[0026] The bidirectional motor drive assembly 7 of this utility model drives the first slider 61 and the second slider 62 to move, select a suitable filter and collimation hole 64 for alignment, reduce the workload of multiple alignments by the operator, and greatly improve the accuracy of the measurement results.

[0027] The bidirectional motor drive assembly 7 includes a first stepper motor 71 and a second stepper motor 72. The first stepper motor 71 is connected to the first slider 61, and the second stepper motor 72 is connected to the second slider 62. Both the first stepper motor 71 and the second stepper motor 72 are linear stepper motors. The first stepper motor 71 drives the first slider 61 to reciprocate, and the second stepper motor 72 drives the second slider 62 to reciprocate. The first slider 61 and the second slider 62 overlap each other. Appropriate collimation aperture 64 and filter aperture 63 are selected and aligned with the X-ray emitter to adapt to the testing requirements of different analytes.

[0028] The first slider 61 has a groove at its top; the bottom of the second slider 62 is movably engaged within the groove. The groove at the top of the first slider 61 is along its length, and the second slider 62 is directly installed within the groove, facilitating the alignment of the first slider 61 and the second slider 62 and further reducing measurement errors.

[0029] The plurality of filter holes 63 have equal diameters, and the diameters of the collimating holes 64 are all less than or equal to the diameters of the filter holes 63. The second slider 62 has a plurality of collimating holes 64 of different sizes to accommodate objects of various materials and shapes. The filter holes 63 are of the same size, facilitating the processing of the second slider 62 and the placement of the filters. The filters are made of various materials, and the filter material within each filter hole 63 is different, adapting to the detection of various substances.

[0030] It also includes a Mylar membrane, which is disposed on the observation window 3. The Mylar membrane is mainly used to prevent the object to be measured from falling into the interior of the spectrometer and causing damage to the spectrometer.

[0031] It also includes a detector 8, which is positioned below the observation window 3; the X-ray exciter 5 emits light that passes sequentially through the filter, the collimating aperture 64, and the object under test, and is then reflected onto the detector 8. The light reflected onto the detector 8 is used to analyze its spectrum.

[0032] It also includes a controller, which is electrically connected to the X-ray exciter 5, the first stepper motor 71, the second stepper motor 72, and the detector 8. The controller coordinates and controls the X-ray exciter 5, the first stepper motor 71, the second stepper motor 72, and the detector 8 to achieve automation and further increase testing efficiency and accuracy.

[0033] It also includes a cooling fan, which is located on the back of the housing 1. The X-ray exciter 5 generates a lot of heat during use. The cooling fan located on the back of the housing 1 is used to dissipate heat from the instruments inside the housing 1 and prevent the instruments inside the housing 1 from being damaged at high temperatures.

[0034] The top cover of the housing 1 is provided with a handle 4. The interior of the housing 1 is an opaque, sealed space, and the top is provided with a top cover. The top cover is located on the top of the housing 1 and is provided with a handle 4 for easy opening and closing during use.

[0035] Working principle:

[0036] First, open the top cover of the housing 1 using handle 4. Then, place the object to be tested on the observation window 3. Next, operate the controller according to the characteristics of the object to be tested, causing the first stepper motor 71 and the second stepper motor 72 to move the first slider 61 and the second slider 62 to the corresponding filter and collimation aperture 64. Then, turn on the X-ray exciter 5. The light passes through the corresponding filter and collimation aperture 64, illuminating the object to be tested, and then reflects onto the detector 8 for spectral analysis. This invention's bidirectional motor drive assembly 7 moves the first slider 61 and the second slider 62, selecting the appropriate filter and collimation aperture 64 for alignment, reducing the workload of multiple alignments for the operator and significantly improving the accuracy of the measurement results.

[0037] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solution of the present invention, and all such equivalent transformations fall within the protection scope of the present invention.

Claims

1. A fluorescence spectrometer, comprising a housing (1) and a stage (2), wherein the stage (2) is arranged laterally inside the housing (1), and an observation window (3) for placing an object to be measured is provided on the stage (2); characterized in that: The device includes an X-ray exciter (5), a filter assembly (6), a detector (8), and a bidirectional motor drive assembly (7). The filter assembly (6) includes a first slider (61), a second slider (62), and a filter. The first slider (61) has a plurality of filter holes (63) evenly distributed on it, and the filter is installed in the filter holes (63). The second slider (62) has a plurality of collimation holes (64) of different diameters. The X-ray exciter (5), the first slider (61), and the second slider (62) are arranged in a staggered manner below the observation window (3), and the bidirectional motor drive assembly (7) drives the first slider (61) and the second slider (62) to move respectively. The detector (8) is located below the observation window (3). The X-ray exciter (5) emits light that passes through the filter, the collimation hole (64), and the object to be measured in sequence, and then reflects onto the detector (8).

2. A fluorescence spectrometer according to claim 1, characterized in that: The bidirectional motor drive assembly (7) includes a first stepper motor (71) and a second stepper motor (72); the first stepper motor (71) and the second stepper motor (72) are used to drive the first slider (61) and the second slider (62) respectively; and the first stepper motor (71) and the second stepper motor (72) are both linear stepper motors.

3. A fluorescence spectrometer according to claim 2, characterized in that: The first slider (61) has a groove at its top; the bottom of the second slider (62) is movably engaged in the groove.

4. A fluorescence spectrometer according to claim 1, characterized in that: The apertures of the plurality of filter holes (63) are equal, and the apertures of the collimating holes (64) are all less than or equal to the apertures of the filter holes (63).

5. A fluorescence spectrometer according to claim 1, characterized in that: It also includes a Mylar membrane, which is disposed on the observation window (3).

6. A fluorescence spectrometer according to claim 2, characterized in that: It also includes a controller, which is electrically connected to the X-ray exciter (5), the first stepper motor (71), the second stepper motor (72) and the detector (8).

7. A fluorescence spectrometer according to claim 1, characterized in that: It also includes a cooling fan, which is located on the back of the housing (1).

8. A fluorescence spectrometer according to claim 1, characterized in that: The top cover of the housing (1) is provided with a handle (4).

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