Signal screening device, screening method and testing system for spectrometer detection system

Abstract

The present invention discloses a signal screening device, screening method and testing system of a spectrometer detection system. The spectrometer detection system includes a plurality of spectrometers and a detection mechanism sequentially arranged along the traveling direction of the light to be detected, the signal screening device includes a spectrum shielding mechanism, at least one of the plurality of spectrometers has a spectroscopic function, the spectrum shielding mechanism is at least arranged between a spectrometer with a spectroscopic function and another spectrometer located behind the spectrometer, and is used to filter out designated strong spectral lines in the spectrum of the light to be detected. The present invention effectively filters out all or part of the strong interference peaks by splitting the signal to be detected and selectively shielding the signal peaks after the splitting, thereby obtaining the information of the weak peak signal by extending the integration time.

Description

Technical Field

[0001] The present invention relates to the field of spectrometer detection, and in particular to a signal screening device, a screening method and a testing system of a spectrometer detection system. Background Art

[0002] Raman spectroscopy is a non-destructive, non-contact method for detecting material composition. It reflects the internal structure of molecules by irradiating samples with laser light to stimulate Stokes signals. Raman spectroscopy is widely used in many fields such as material testing, material identification, and in-situ analysis.

[0003] When actually measuring the Raman spectrum of a sample, sometimes strong but unnecessary interference peaks (strong spectral lines) appear, covering up the situation of weak signals nearby. One traditional method is to enhance weak signals by extending the integration time, but the intensity of the strong spectral line interference peak may exceed the threshold that the detector can withstand, resulting in invalid measurement or even damage to the detector; there is also a method of using filters to filter out strong peaks. Since filters can only filter out signals of specific wavelengths, the actual sample conditions are ever-changing, and strong spectral lines (strong peaks) will change with different samples, so a large number of filters are required. If it is not a common model of filter, it needs to be specially customized, which is extremely expensive; the third method is to rotate the spectrometer grating, move the strong peak spectral line out of the measurement area, and select a band without strong interference peaks, which will lead to incomplete peaks and inaccurate detection. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a signal screening device, screening method and test system for a spectrometer detection system. The signal screening method effectively solves the problem that a strong interference peak in a signal to be detected masks a weak signal nearby.

[0005] To achieve the aforementioned object of the invention, one aspect of the present invention provides a signal screening device for a spectrometer detection system, wherein the spectrometer detection system comprises a plurality of spectrometers and a detection mechanism sequentially arranged along the direction of travel of the light to be detected; the signal screening device comprises a spectral shielding mechanism, wherein at least one spectrometer among the plurality of the spectrometers has a spectroscopic function, and the spectral shielding mechanism is at least arranged between a spectrometer with a spectroscopic function and another spectrometer located behind the spectrometer, and is used to filter out specified strong spectral lines in the spectrum of the light to be detected.

[0006] Furthermore, the spectral shielding mechanism includes a shielding member and a moving mechanism, the shielding member is at least used to filter out specified strong spectral lines in the light spectrum to be detected, the shielding member is connected to the moving mechanism, and the moving mechanism is at least used to drive the shielding member to move along a first direction and a second direction, and the first direction and the second direction are arranged to intersect.

[0007] Furthermore, the first direction and the second direction are perpendicular to each other.

[0008] Furthermore, the moving mechanism includes a moving platform and a driving mechanism, the shielding member is connected to the moving platform, and the driving mechanism is connected to the moving platform and drives the moving platform to move.

[0009] Furthermore, the shielding member is detachably connected to the mobile platform.

[0010] Furthermore, the spectrum shielding mechanism includes a plurality of shielding members of different specifications, and the plurality of shielding members are all connected to the moving mechanism.

[0011] Furthermore, the shielding member is a light-proof structure; or, the shielding member is a partially light-transmitting structure, and the light transmittance is 1%.

[0012] Furthermore, the shielding member is a blade structure or a vertical rod structure.

[0013] Further, the plurality of spectrometers all have a light splitting function; or, at least one of the spectrometers has a light combining function; preferably, a spectrometer close to the detection mechanism in the direction of travel of the light to be detected has a light combining function.

[0014] Furthermore, the light to be detected is stimulated light generated by irradiation of the sample to be detected with stimulated light; preferably, the light to be detected is a Raman signal.

[0015] The present invention also provides a signal screening method for a spectrometer detection system, which includes: allowing the light to be detected to pass through multiple spectrometers in sequence and then enter a detection mechanism, and when the light to be detected passes between a spectrometer with a spectroscopic function and another spectrometer located behind the spectrometer, using a spectrum shielding mechanism to filter out specified strong spectral lines in the spectrum of the light to be detected.

[0016] Furthermore, the spectral shielding mechanism includes a shielding member and a moving mechanism, the shielding member is at least used to filter out specified strong spectral lines in the light spectrum to be detected, the shielding member is connected to the moving mechanism, and the moving mechanism is at least used to drive the shielding member to move along a first direction and a second direction, and the first direction and the second direction are arranged to intersect.

[0017] Furthermore, the first direction and the second direction are perpendicular to each other.

[0018] Furthermore, the moving mechanism includes a moving platform and a driving mechanism, the shielding member is connected to the moving platform, and the driving mechanism is connected to the moving platform and drives the moving platform to move.

[0019] Furthermore, the shielding member is detachably connected to the mobile platform.

[0020] Furthermore, the shielding member is a light-proof structure; or, the shielding member is a partially light-transmitting structure, and the light transmittance is 1%.

[0021] Furthermore, the shielding member is a blade structure or a vertical rod structure.

[0022] Furthermore, the spectrum shielding mechanism includes a plurality of shielding members of different specifications, and the plurality of shielding members are all connected to the moving mechanism.

[0023] Further, the plurality of spectrometers all have a light splitting function; or, at least one of the spectrometers has a light combining function; preferably, a spectrometer close to the detection mechanism in the direction of travel of the light to be detected has a light combining function.

[0024] Furthermore, the light to be detected is stimulated light generated by irradiation of the sample to be detected with stimulated light; preferably, the light to be detected is a Raman signal.

[0025] The present invention also provides a Raman spectroscopy-based testing system, which comprises the above-mentioned signal screening device.

[0026] Compared with the prior art, the signal screening method of the spectrometer detection system of the present invention effectively filters out all or part of the strong interference peaks by splitting the signal to be detected and selectively blocking the signal peaks after splitting, thereby obtaining the information of the weak peak signal by extending the integration time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a schematic diagram of the principle of the Raman spectroscopy testing system of the present invention;

[0029] Figure 2 It is a structural schematic diagram of a spectrometer detection system in a low-frequency mode detection in one embodiment of the present invention;

[0030] Figure 3 It is a structural schematic diagram of a spectrum shielding mechanism in one embodiment of the present invention;

[0031] Figure 4 It is a schematic diagram of the principle of the spectrometer of the present invention for high-resolution mode detection;

[0032] Figure 5It is a schematic diagram of the principle of the spectrometer of the present invention for low wave number mode detection;

[0033] Figure 6 is a schematic diagram of a signal screening method of a spectrometer detection system of the present invention;

[0034] Figure 7 It is a structural schematic diagram of a spectrometer detection system in a high-resolution mode detection in one embodiment of the present invention;

[0035] Figure 8 is a schematic diagram of spectrum lines after being split by a spectrometer with a spectrometer function in one embodiment of the present invention;

[0036] Fig. 9 It is a schematic structural diagram of a shielding member in an embodiment of the present invention. DETAILED DESCRIPTION

[0037] In view of the deficiencies in the prior art, the inventor of this case has proposed the technical solution of the present invention after long-term research and extensive practice. The technical solution, its implementation process and principle, etc. will be further explained as follows. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0038] In addition, in the description of the present invention, it should be understood that the terms "upper", "lower", "inside", "outside", "horizontal", "vertical", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] In the description of this specification, the description with reference to the terms "one embodiment", "an embodiment", "the embodiment", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] See also Figure 1-Figure 3, a signal screening device of a spectrometer detection system, the spectrometer detection system includes a plurality of spectrometers and a detection mechanism arranged in sequence along the direction of travel of the light to be detected; the signal screening device includes a spectrum shielding mechanism, at least one spectrometer among the plurality of spectrometers has a spectroscopic function, the spectrum shielding mechanism is at least arranged between a spectrometer with a spectroscopic function and another spectrometer located behind the spectrometer, and is used to filter out specified strong spectral lines in the spectrum of the light to be detected.

[0041] In one embodiment, if Figure 1 , 2 As shown, after the multi-wavelength laser is combined by the laser beam combining system, it enters the microscopic Raman excitation collection system and is focused on the sample, thereby exciting the Raman signal. The excited Raman signal is then transmitted to the spectrometer detection system through reflection. The spectrometer detection system is provided with a plurality of spectrometers and a detection mechanism 6. In the present embodiment, three spectrometers can be provided, namely, the first spectrometer 3, the second spectrometer 4, and the first spectrometer 5. The three spectrometers are sequentially arranged in the direction in which the Raman signal travels. After entering the spectral detection system, the reflected Raman signal passes through the three spectrometers in sequence. However, when the spectrometer detection system detects the transmitted Raman signal, it is easily interfered by the strong spectral line, thereby masking the weaker Raman signal, thereby reducing the accuracy of the Raman signal detection. Therefore, among the three spectrometers, at least one spectrometer with a spectroscopic function is provided, so that the light to be detected is dispersed into spectral lines when passing through the spectrometer, and a spectrum shielding mechanism is provided between the spectrometer with a spectroscopic function and the next spectrometer along the traveling direction of the light to be detected. When the light to be detected is dispersed into spectral lines by the spectrometer with a spectroscopic function, the spectrum shielding mechanism can effectively shield the designated strong spectral lines, and the spectral lines after shielding enter the next spectrometer, and then enter the detection mechanism 6 for detection. By providing a spectrometer with a spectroscopic function and a spectrum shielding mechanism, strong spectral lines can be effectively shielded, thereby satisfying the detection of weaker Raman signals and further improving the detection accuracy.

[0042] Specifically, Figure 3 As shown, the spectrum shielding mechanism includes a shielding member 7 and a moving mechanism 8, the shielding member 7 is at least used to filter out the designated strong spectral line in the light spectrum to be detected, the shielding member 7 is connected to the moving mechanism 8, and the moving mechanism 8 is at least used to drive the shielding member 7 to move along the first direction and the second direction, and the first direction and the second direction are arranged to intersect. The first direction and the second direction are perpendicular. The moving mechanism 8 includes a moving platform and a driving mechanism, the shielding member 7 is connected to the moving platform, and the driving mechanism is connected to the moving platform and drives the moving platform to move.

[0043] In one embodiment, the shielding member 7 is installed and connected to a mobile platform, and a driving mechanism is connected to the mobile platform and drives the mobile platform to move. The shielding member 7 can be driven to move along a first direction and a second direction as needed, wherein the first direction and the second direction can be arranged perpendicular to each other. On the plane where the light to be detected travels, the first direction can be an X direction which is the same as the direction of travel of the light to be detected, and the second direction can be a Y direction which is perpendicular to the direction of travel of the light to be detected. The shielding member 7 is driven to move along the XY directions, and its position can be freely adjusted, so that the shielding member 7 can be adjusted to block different spectral lines, which is suitable for filtering spectral lines of any wavelength.

[0044] The shielding member 7 is detachably connected to the mobile platform. The shielding member 7 can be connected to the mobile platform by means of a snap connection or a thread, etc., so as to facilitate installation and removal. Preferably, the shielding member 7 is connected to the mobile platform by a clamping method. It is possible to conveniently replace the shielding member 7 or replace other structures that can achieve selective shading.

[0045] In addition, the spectrum shielding mechanism includes a plurality of shielding members 7 of different specifications, and the plurality of shielding members 7 are connected to the moving mechanism 8. In one embodiment, a plurality of shielding members 7 of different specifications are arranged on the mobile platform, and the mobile platform is moved by the driving mechanism to move the shielding members 7, so that the shielding members 7 of different specifications shield the specified spectral lines at the corresponding positions, thereby achieving a better filtering effect.

[0046] In the specific structure of the shielding member 7, the shielding member 7 is a blade structure or a vertical rod structure, and the shielding member 7 is a light-proof structure; or, the shielding member 7 is a partially light-transmitting structure, and the light transmittance of the vertical strip-shaped light-shielding area is 1%.

[0047] In one embodiment, the shielding member 7 is a vertical rod-shaped structure, and its extension direction is perpendicular to the direction of travel of the light to be detected, wherein the shielding member 7 is made of black opaque material, which can effectively block the spectral lines. In addition, the shielding member 7 can also be made of partially translucent material. For example, the transmittance of the vertical strip shading area is 1%. Under this structure, the position of the blocked strong spectral line can be partially retained as a reference, and the weaker signal can also be enhanced.

[0048] In another embodiment, the shielding member 7 may also be a light-transmitting thin sheet for partial light shielding. Fig. 9 As shown, the shielding member 7 is a quartz glass sheet, on which there is a vertical stripe area with low light transmittance, the light transmittance of which is 1%, and the designated strong spectral line can be shielded, and the rest of the area on the quartz glass sheet is an area with high light transmittance. The light transmittance of the vertical stripe area can be controlled by surface coating.

[0049] In addition, if Figure 4As described above, when detecting the light to be detected, a high-resolution mode can be achieved, that is, multiple spectrometers have a spectroscopic function. In this embodiment, three spectrometers with a spectroscopic function form a cascade amplification effect, so that after the light to be detected enters the spectrometer, it is amplified by the spectroscopic amplification of multiple spectrometers to obtain a high-resolution spectral line.

[0050] Or, if Figure 5 As shown, when detecting the light to be detected, a low wave number mode can be realized, that is, at least one of the spectrometers has a light combining function; preferably, a spectrometer close to the detection mechanism 6 in the direction of travel of the light to be detected has a light combining function.

[0051] In this embodiment, the light to be detected is split by multiple spectrometers before entering the detection mechanism 6. When it is about to enter the detection mechanism 6, the scattered light is recombined into a beam by a spectrometer with a light combining function, and then enters the detection mechanism 6, thereby realizing the detection of low wavenumber modes.

[0052] The light to be detected is stimulated light generated by the sample to be detected when irradiated with stimulated light; preferably, the light to be detected is a Raman signal.

[0053] The present invention also provides a signal screening method for a spectrometer detection system, which includes: allowing the light to be detected to pass through multiple spectrometers in sequence and then enter a detection mechanism 6, and when the light to be detected passes between one of the spectrometers with a spectroscopic function and another spectrometer located behind the spectrometer, using a spectrum shielding mechanism to filter out specified strong spectral lines in the spectrum of the light to be detected.

[0054] The spectrum shielding mechanism includes a shielding member 7 and a moving mechanism 8, wherein the shielding member 7 is at least used to filter out a designated strong spectral line in the light spectrum to be detected, the shielding member 7 is connected to the moving mechanism 8, and the moving mechanism 8 is at least used to drive the shielding member 7 to move along a first direction and a second direction, and the first direction and the second direction are arranged to intersect. The first direction and the second direction are perpendicular to each other. The moving mechanism 8 includes a moving platform and a driving mechanism, the shielding member 7 is connected to the moving platform, and the driving mechanism is connected to the moving platform and drives the moving platform to move. The shielding member 7 is detachably connected to the moving platform.

[0055] Further, the shielding member 7 is a light-proof structure; or, the shielding member 7 is a partially light-transmitting structure, and the light transmittance is 1%. The shielding member 7 is a blade structure or a vertical rod structure. The spectrum shielding mechanism includes a plurality of shielding members 7 of different specifications, and the plurality of shielding members 7 are all connected to the moving mechanism 8.

[0056] Among them, multiple spectrometers all have a light splitting function; or at least one of the spectrometers has a light combining function; preferably, a spectrometer close to the detection mechanism 6 in the direction of the light to be detected has a light combining function. The light to be detected is the stimulated light generated by the sample to be detected being irradiated with stimulated light; preferably, the light to be detected is a Raman signal.

[0057] The present invention also provides a Raman spectrum-based testing system, which comprises a signal screening device.

[0058] The technical scheme of the present invention is further described in detail below in conjunction with several preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following embodiments are usually based on conventional conditions.

[0059] Example 1

[0060] A signal screening method for a spectrometer detection system, such as Figure 6 As shown, the light to be detected is the Raman signal excited by the excitation wavelength focusing on the sample. The detection system is a Raman spectroscopy system based on a cascade spectrometer. The number of spectrometers is three, 3, 4, and 5. Through the step-by-step light splitting / combining of the spectrometers, a high-resolution, low-wavenumber Raman system can be built to improve the overall performance of the Raman spectroscopy system.

[0061] Includes steps:

[0062] (1) The excitation wavelength is focused on the sample 1 and the excited Raman signal enters the first spectrometer 3 for spectrometry; the excitation wavelength is focused on the sample 1 to excite the Raman signal. The Raman signal is separated from the laser by the spectroscopic element in the sample excitation device and illuminates the off-axis parabolic mirror 2. The off-axis parabolic mirror 2 focuses the Raman signal on the entrance slit of the spectrometer 3. After passing through the spectrometer 3, the Raman signal is separated according to the spectrum and emitted from the outlet of the spectrometer 3 to form a spectral line distribution.

[0063] (2) The split Raman signal passes through a spectrum shielding mechanism and selectively shields at least one signal peak;

[0064] (3) The Raman signal filtered by the shielding method enters the second spectrometer 4 for light combination and the third spectrometer 5 for light separation, and the Raman signal is detected by the detection mechanism 6.

[0065] The spectrum shielding mechanism includes at least one shielding member 7 for shielding a certain signal peak and a moving mechanism 8, and can realize shielding and screening of one or more signal peaks.

[0066] The shielding member 7 can at least partially block at least part of the intensity of a certain signal peak; the light-transmitting portion and the signal peak intensity can be flexibly selected, for example, the transmittance is 1%, so that the position of the strong interference peak can be retained as a reference while enhancing the weak signal peak.

[0067] The shielding member 7 is a blade structure or a vertical rod structure, and the shielding member 7 with matching shape and size can be selected according to the spectrum. Preferably, the shielding member 7 is black to reduce light reflection and achieve a better filtering effect.

[0068] The moving mechanism 8 can drive the shielding member 7 to move along the XY direction so as to selectively shield / avoid a certain signal peak; the moving mechanism 8 includes a moving platform and a driving mechanism for driving the moving platform; the driving mechanism is a motor or a cylinder. Through the moving mechanism 8, the position of the shielding member 7 can be freely adjusted to filter out peaks of any wavelength. It is continuously adjustable, flexible and convenient, and is suitable for filtering out spectral lines (signal peaks) of any wavelength.

[0069] The shielding member 7 is detachably connected to the mobile platform; preferably, the shielding member 7 is connected to the mobile platform by clamping, so that the shielding member 7 can be easily replaced, or replaced with other structures that can achieve selective shading.

[0070] The cascade spectrometer detection system has three signal detection modes: single-unit mode, high-resolution mode, and low-wavenumber mode.

[0071] Low wavenumber mode spectroscopy measurements, such as Figure 2 As shown, this is achieved by using the first spectrometer to split light 3, the second spectrometer 4 to combine light, and the third spectrometer 5 to split light. In this mode, the entrance slit of the second spectrometer 4 is used to block the excitation laser, while allowing the Raman signal to pass, thereby achieving Raman spectroscopy measurement without filters, overcoming the limitations of the difficulty in manufacturing filters and achieving low wavenumber measurement in the ultraviolet and deep ultraviolet bands.

[0072] like Figure 8 As shown, in the low wave number mode detection, the spectral distribution of the Raman signal after passing through the first spectrometer 3, in which the spectrum line A is very strong and the similar spectrum line B is very weak. At this time, the signal of B is easily annihilated in the background noise and difficult to distinguish. If you want to enhance B by extending the integration time, the intensity of the strong spectrum line A will exceed the threshold that the detector can withstand, resulting in invalid measurement and even damage to the detector. Due to the ever-changing conditions of actual samples, the wavelength of the strong spectrum line will change, making it difficult to filter out with a filter. The spectrum shielding mechanism is placed between the first spectrometer 3 and the second spectrometer 4, and the position is adjusted so that the strong spectrum line A is just blocked by the vertical rod to filter out the spectrum line. The filtered spectral signal enters the second spectrometer 4, and is recombined into a beam after the second spectrometer 4 combines the light, focuses on the entrance slit of the third spectrometer 5, splits the light through the third spectrometer 5, and irradiates the detection mechanism 6 to achieve spectral detection.

[0073] The spectrum shielding mechanism can be replaced with sheets of different sizes to achieve a better filtering effect. Since the spectrum shielding mechanism can be driven to move by the moving mechanism 8, the position can be freely adjusted, and it is suitable for filtering spectral lines of any wavelength.

[0074] In high-resolution mode, Figure 7 As shown, the three spectrometers all play a role in splitting light, and the signal spectrum is cascaded and amplified by the three spectrometers to obtain a high-resolution spectral line.

[0075] When operating in the high-resolution mode, the spectrum shielding mechanism may also be placed between the second spectrometer 4 and the third spectrometer 5 to filter out a certain strong interfering peak.

[0076] The present application proposes a signal screening method, which achieves the purpose of extending the integration time and obtaining weak peak signals by selectively screening out signal peaks.

[0077] The various aspects, embodiments, features and examples of the present invention should be considered as illustrative in all aspects and are not intended to limit the present invention, the scope of the present invention is defined only by the claims. Other embodiments, modifications and uses will be apparent to those skilled in the art without departing from the spirit and scope of the claimed invention.

[0078] In addition, the inventors of this case also referred to the aforementioned embodiments and conducted experiments with other raw materials, process operations, and process conditions described in this specification, and obtained relatively ideal results.

[0079] Although the present invention has been described with reference to illustrative embodiments, it will be appreciated by those skilled in the art that various other changes, omissions and / or additions may be made without departing from the spirit and scope of the present invention and that the elements of the embodiments may be replaced by substantial equivalents. In addition, many modifications may be made without departing from the scope of the present invention to adapt specific circumstances or materials to the teachings of the present invention. Therefore, it is not intended herein to limit the present invention to the disclosed specific embodiments for performing the present invention, but it is intended that the present invention will include all embodiments within the scope of the appended claims. In addition, unless specifically stated, any use of the terms first, second, etc. does not indicate any order or importance, but rather uses the terms first, second, etc. to distinguish one element from another.

Claims

1. A signal screening device for a spectrometer detection system, the spectrometer detection system comprising a plurality of spectrometers and detection mechanisms arranged in sequence along the traveling direction of the light to be detected; characterized in that: The signal screening device includes a spectral shielding mechanism, at least one spectrometer among the multiple spectrometers has a spectroscopic function, the spectral shielding mechanism is at least arranged between a spectrometer with a spectroscopic function and another spectrometer located behind the spectrometer, and is used to filter out specified strong spectral lines in the light spectrum to be detected; the spectral shielding mechanism includes a shielding member and a moving mechanism, the shielding member is at least used to filter out specified strong spectral lines in the light spectrum to be detected, the shielding member is connected to the moving mechanism, and the moving mechanism is at least used to drive the shielding member to move along a first direction and a second direction, and the first direction and the second direction are arranged to intersect.

2. The signal screening device according to claim 1, characterized in that: The first direction is perpendicular to the second direction; And / or, the moving mechanism comprises a moving platform and a driving mechanism, the shielding member is connected to the moving platform, and the driving mechanism is connected to the moving platform and drives the moving platform to move; And / or, the shielding member is detachably connected to the mobile platform; And / or, the spectrum shielding mechanism comprises a plurality of shielding members of different specifications, and the plurality of shielding members are all connected to the moving mechanism; And / or, the shielding member is a light-proof structure; Alternatively, the shielding member is a partially light-transmitting structure, and the light transmittance is 1%; And / or, the shielding member is a blade structure or a vertical rod structure.

3. The signal screening device according to claim 1, characterized in that: The plurality of spectrometers all have a spectroscopic function; Alternatively, at least one of the spectrometers has a light combining function; a spectrometer close to the detection mechanism in the direction of travel of the light to be detected has a light combining function.

4. The signal screening device according to claim 1, characterized in that: The light to be detected is stimulated light generated by the sample to be detected being irradiated with stimulated light; and the light to be detected is a Raman signal.

5. A signal screening method for a spectrometer detection system, using the signal screening device according to any one of claims 1 to 4, characterized in that: include: The light to be detected is made to pass through multiple spectrometers in sequence before entering the detection mechanism. When the light to be detected passes between one spectrometer with a spectroscopic function and another spectrometer located behind the spectrometer, a spectrum shielding mechanism is used to filter out designated strong spectral lines in the spectrum of the light to be detected.

6. The signal screening method according to claim 5, characterized in that: The spectral shielding mechanism includes a shielding member and a moving mechanism, wherein the shielding member is at least used to filter out designated strong spectral lines in the light spectrum to be detected, the shielding member is connected to the moving mechanism, and the moving mechanism is at least used to drive the shielding member to move along a first direction and a second direction, and the first direction and the second direction are arranged to intersect.

7. The signal screening method according to claim 5, characterized in that: The first direction is perpendicular to the second direction; And / or, the moving mechanism comprises a moving platform and a driving mechanism, the shielding member is connected to the moving platform, and the driving mechanism is connected to the moving platform and drives the moving platform to move; And / or, the shielding member is detachably connected to the mobile platform; And / or, the shielding member is a light-proof structure; Alternatively, the shielding member is a partially light-transmitting structure, and the light transmittance is 1%; And / or, the shielding member is a blade structure or a vertical rod structure.

8. The signal screening method according to claim 6, characterized in that: The spectrum shielding mechanism comprises a plurality of shielding members with different specifications, and the plurality of shielding members are all connected to the moving mechanism.

9. The signal screening method according to claim 5, characterized in that: The plurality of spectrometers all have a spectroscopic function; Alternatively, at least one of the spectrometers has a light combining function; A spectrometer close to the detection mechanism in the direction of travel of the light to be detected has a light combining function.

10. The signal screening method according to claim 5, characterized in that: The light to be detected is stimulated light generated by the sample to be detected being irradiated with stimulated light; and the light to be detected is a Raman signal.

11. A Raman spectroscopy testing system, characterized in that: A signal screening device comprising any one of claims 1-4.

Images