CN117740750A - Discrete light-splitting detector - Google Patents

Abstract

A discrete light-splitting detection device comprises a shell, a light source emitter, a spectroscope, a condenser, an optical filter, a collimation unit, a discrete light sensing unit and a processing unit. The shell is provided with an object to be measured accommodating groove for accommodating the object to be measured. The light source emitter generates detection light and emits the detection light to the spectroscope. The spectroscope reflects the detection light and then passes through the condenser, so that the detection light is focused on the object to be detected, and the object to be detected scatters Raman scattering light. The Raman scattered light sequentially passes through the condenser, the spectroscope, the optical filter and the collimation unit, the collimation unit collimates the Raman scattered light into collimated light, and the discrete light sensing unit receives and generates a plurality of light intensity sensing signals according to the collimated light so as to enable the processing unit to generate a detection result according to the plurality of light intensity sensing signals. The invention can rapidly confirm the detection result of the object to be detected, does not need to go to a laboratory to analyze the object to be detected, avoids the user from taking toxic substances, and reduces the risk of the toxic substances accumulating in the body.

Description

Discrete spectroscopic detection device

Technical field

The present invention relates to a detection device, in particular to a discrete spectroscopic detection device.

current technology

Malachite green was first used in the dyeing of clothing, wool, and paper. Later, it was discovered that malachite green aqueous solution can reduce fungal infections, kill parasites, and prevent fish wound infections, and it began to be widely used in the aquatic industry. , such as for breeding or transportation disinfection.

Although malachite green can eliminate bacteria in the aquatic environment, long-term use has found that malachite green is a toxic substance, which will not only affect the health of fish and shrimps, but if humans ingest excessive amounts of fish and shrimp containing malachite green, It can also have a significant impact on health. For example, the toxins in malachite green can cause cancer, genetic damage and other health risks.

The current way to detect toxic substances, such as malachite green, is through a liquid chromatograph/mass spectrometer (Liquid Chromatograph/Mass Spectrometer), and detection through a liquid chromatograph/mass spectrometer requires the sample to be sent into a liquid. The phase chromatograph separates and purifies the complex components in the sample and sends the purified sample one by one to the mass spectrometer for further detection according to time. However, since liquid chromatography/mass spectrometers are expensive experimental equipment, detection can only be carried out in professional laboratories. And liquid chromatography/mass spectrometers require specially trained personnel to operate. In addition, detection by liquid chromatography/mass spectrometer takes a long time and the results cannot be known immediately.

Another way to test for toxic substances is through rapid test strips. However, before testing, the sample solution needs to be extracted with an extraction solution for 40 minutes, and then the extracted sample solution is dropped on the rapid test strip to react for 15 minutes before the test result can be known, which is still quite time-consuming. In addition, the extraction solution and rapid test strips are consumables, which are not friendly to the environment, and they use biochemical methods, resulting in low consumer willingness to use them.

Therefore, current methods of detecting toxic substances continue to be further improved.

Contents of the invention

In view of the above problems, the present invention provides a discrete spectroscopic detection device that uses a simple Raman spectrum analysis method to detect whether the sample contains spectral signals of toxic substances, so there is no need to go to the laboratory to analyze the sample. , and can quickly confirm the test results, thus avoiding the ingestion of toxic substances that harm the body and reducing the risk of toxic substances accumulating in the body.

The discrete spectroscopic detection device of the present invention includes a housing, a light source emitter, a beam splitter, a condenser lens, a filter, a collimation unit, a discrete light sensing unit and a processing unit.

The housing has an object receiving slot for accommodating an object to be tested. The light source emitter is arranged in the housing and generates a detection light. The frequency of the detected light is a first frequency. The spectroscope is disposed in the housing, and the light source emitter emits the detection light toward the spectroscope. The condenser lens is arranged on a side wall of the object receiving groove of the housing. After the detection light is reflected by the spectroscope, it is directed to the condenser lens, and is focused on the object to be measured accommodated in the object to be measured through the condenser lens, so that a Raman scattering is scattered by the object to be measured. light. The Raman scattered light includes light of multiple frequencies, and the multiple frequencies of the Raman scattered light are different from the first frequency.

The optical filter is arranged in the housing. The Raman scattered light is reflected back to the spectroscope through the condenser mirror, refracted by the spectroscope, and then directed to the filter. The optical filter filters out light with the frequency of the first frequency. The collimation unit is arranged in the housing. After the Raman scattered light passes through the filter, it is emitted to the collimating unit, and forms a collimated light through the collimating unit. The discrete light sensing unit is disposed in the housing. The collimated light rays are emitted from the collimating unit to the discrete light sensing unit, and the discrete light sensing unit generates a plurality of light intensity sensing signals according to the collimated light rays. The processing unit is electrically connected to the discrete light sensing unit, receives the plurality of light intensity sensing signals, and generates a detection result according to the plurality of light intensity sensing signals.

Generally speaking, when an incident light hits a sample to be measured, scattering occurs. If the energy of the scattered light changes, that is, the frequency of the scattered light changes, this situation is called inelastic collision, also called Raman scattering.

Specifically, Raman scattering uses the scattering phenomenon of the sample to be measured to measure the vibration and rotation modes of the crystal lattice and molecules. When incident light irradiates the molecules of the sample to be measured, the incident light will interact with the molecular bonds of the molecules, and each molecular bond has its own unique vibration mode. Therefore, Raman scattering can be used to measure the vibration of the molecules. Energy difference to identify the type of content.

When the present invention is used, the object to be measured only needs to be placed in the object to be measured, and the Raman scattered light scattered by the object to be measured can be received through the discrete light sensing unit, and The corresponding plurality of light intensity signals are generated according to the Raman scattering, and then the processing unit generates the detection result according to the plurality of light intensity signals. That is to say, the present invention allows users to confirm the test results without going to the laboratory to analyze the object to be tested, and the present invention detects through optical means, which can quickly determine the test results of the object to be tested, thereby avoiding the user from ingesting Remove toxic substances that harm the body and reduce the risk of toxic substances accumulating in the body. At the same time, the present invention can be operated by ordinary users without special training and is not prone to producing consumables, so it can improve users' willingness to use it.

Description of drawings

Figure 1 is a schematic diagram of the discrete spectroscopic detection device of the present invention;

Figure 2 is a block diagram of the discrete spectroscopic detection device of the present invention;

Figure 3 is a schematic diagram of the detection method of the discrete spectroscopic detection device of the present invention;

Figure 4 is a schematic diagram of the discrete light sensing unit of the discrete spectroscopic detection device of the present invention;

Figure 5 is an exploded schematic diagram of the discrete light sensing unit of the discrete spectroscopic detection device of the present invention;

Figure 6 is a schematic diagram of the Raman shift spectrum of malachite green;

Figure 7 is a schematic diagram of the Raman spectrum for detecting malachite green according to the present invention.

Detailed ways

Please refer to Figures 1, 2 and 3. The discrete spectroscopic detection device of the present invention includes a housing 10, a processing unit 20, a light source emitter 30, a beam splitter 40, a condenser 50, and a light filter. 60, a collimating unit 70 and a discrete light sensing unit 80.

The housing 10 has an object receiving slot 11 for accommodating an object 111 . The light source emitter 30 is disposed in the housing 10 and generates a detection light. The frequency of the detected light is a first frequency. The spectroscope 40 is disposed in the housing 10 , and the light source emitter 30 emits the detection light toward the spectroscope 40 . The condenser lens 50 is disposed on a side wall of the object receiving groove 11 of the housing 10 . After the detection light is reflected by the spectroscope 40 , it is directed to the condenser lens 50 , and is focused on the object to be measured 111 accommodated in the object to be measured accommodating groove 11 through the condenser lens 50 , so as to pass through the object to be measured 111 Scatter a Raman scattered light. The Raman scattered light includes light of multiple frequencies, and the multiple frequencies of the Raman scattered light are different from the first frequency.

The optical filter 60 is disposed in the housing. The Raman scattered light passes through the condenser 50 and returns to the beam splitter 40 , and is refracted by the beam splitter 40 before being directed to the filter 60 . The optical filter 60 filters out the light with the frequency of the first frequency. The collimation unit 70 is disposed in the housing. After the Raman scattered light passes through the filter 60 , it is directed to the collimating unit 70 , and forms a collimated light through the collimating unit 70 . The discrete light sensing unit 80 is disposed in the housing. The collimated light rays are emitted from the collimating unit 70 to the discrete light sensing unit 80, and the discrete light sensing unit 80 generates a plurality of light intensity sensing signals according to the collimated light rays. The processing unit 20 is electrically connected to the discrete light sensing unit 80, receives the plurality of light intensity sensing signals, and generates a detection result according to the plurality of light intensity sensing signals.

Please refer to FIG. 1 and FIG. 2 . The discrete spectroscopic detection device also includes a start button 101 , a display unit 102 and a power button 103 .

The start button 101, the display unit 102 and the power button 103 are electrically connected to the processing unit 20 respectively. The power button 103 is used to start or turn off the power of the discrete spectroscopic detection device. The display unit 102 is used to receive and display the detection result. The start button 101 is operated by the user to trigger the detection process of the discrete spectroscopic detection device. For example, when the start button 101 is triggered, the start button 101 generates and transmits a start detection signal to the processing unit 20 . When the processing unit 20 receives the start detection signal, the processing unit 20 starts the light source emitter 30 and receives the plurality of light intensity sensing signals generated by the discrete light sensing unit 80 . And the processing unit 20 generates the detection result according to the plurality of light intensity sensing signals, and displays the detection result through the display unit 102 .

When the discrete spectroscopic detection device is used, the user places the object 111 in the object receiving groove 11 . Then, the user can trigger by pressing the start button 103 to generate the start detection signal. When the processing unit 20 receives the detection start signal, the processing unit 20 can activate the light source emitter 30 to emit the detection light. And the processing unit 20 can also receive the Raman scattered light scattered by the object 111 through the discrete light sensing unit 80, and generate corresponding light intensity signals based on the Raman scattering. Finally, the processing unit 20 generates the detection result according to the plurality of light intensity signals.

In this way, users do not need to go to the laboratory to analyze the analyte, and can confirm the test results through the discrete spectroscopic detection device. Moreover, the discrete spectroscopic detection device detects through optical means, which can quickly determine the detection results of the object to be tested, thereby preventing the user from ingesting toxic substances that are harmful to the body and reducing the risk of toxic substances accumulating in the body. At the same time, the discrete spectroscopic detection device can be operated by ordinary users without special training, and it is not easy to produce consumables, so it can increase users' willingness to use it.

Please refer to Figure 3. In this embodiment, the light source emitter 30 is a laser emitter, and the wavelength of the detection beam emitted by the plurality of laser emitters is between 532 nanometers (nm) and 1064 nanometers. . The filter 60 is a band-blocking filter or a low-pass filter. An incident angle θ of the detection light incident on the spectroscope 40 is 45 degrees.

The light source emitter 30 emits the detection light toward the beam splitter 40 along a first direction X. After the detection light is reflected by the beam splitter 40 , the detection light is emitted toward the condenser mirror 50 in a direction away from a second direction Y. The Raman scattered light scattered by the object 111 sequentially passes through the condenser 50 , the beam splitter 40 , the filter 60 and the collimating unit 70 along the second direction Y, and then enters the discrete The light sensing unit 80 receives the collimated light generated by the collimating unit 70 after the Raman scattered light is collimated by the discrete light sensing unit 80 . In this embodiment, the first direction X is perpendicular to the second direction Y.

Furthermore, the collimation unit 70 includes a first convex lens 71 and a second convex lens 72 . The first convex lens 71 has a first focal length f1, the second convex lens 72 has a second focal length f2, and the second focal length f2 is greater than the first focal length f1. In addition, a first focus position of the first convex lens 71 is the same as a second focal length position of the second convex lens 72 , that is, the first convex lens 71 and the second convex lens have the same focus position f. After the Raman scattered light passes through the filter 60, the Raman scattered light is directed to the first convex lens 71 of the collimating unit 70, and is focused by the first convex lens 71 before being directed to the collimating unit. The second convex lens 72 of 70 is collimated into the collimated light by the second convex lens 72 .

When the Raman scattered light enters the collimating unit 70, the Raman scattered light is first focused at the focus position f through the first convex lens 71, and the focused Raman scattered light is further emitted to the second Convex lens 72. Since the first convex lens 71 and the second convex lens 72 have the same focus position f, the focused Raman scattered light is emitted from the focus position f of the second convex lens 72 to the second convex lens 72, so it can be The second convex lens 72 collimates the focused Raman scattered light into the collimated light. In addition, since the second focal length f2 of the second convex lens 72 is greater than the first focal length f1 of the first convex lens 71 , the cross-sectional area of the collimated light will be larger than the Raman scattered light before incident on the collimating unit 70 cross-sectional area. Thereby, the discrete light sensing unit 80 can receive the collimated light with a larger cross-sectional area, thereby improving the accuracy of sensing.

Please refer to FIG. 4 and FIG. 5 . The discrete light sensing unit 80 includes a plurality of light intensity sensors 81 and a plurality of discrete optical filters 82 . The plurality of light intensity sensors 81 are disposed on a circuit board 83 and are electrically connected to the processing unit 20 through lines on the circuit board 83 . In this embodiment, the plurality of light intensity sensors 81 are arranged in a matrix. The number of the plurality of light intensity sensors 81 is 2 to 25.

The arrangement positions of the plurality of discrete optical filters 82 respectively correspond to the arrangement positions of the plurality of light intensity sensors 81 . That is, the placement positions of the plurality of discrete optical filters 82 correspond to the placement positions of the plurality of light intensity sensors 81 in a one-to-one correspondence. For example, the discrete light sensing unit 80 further includes a housing 84 and an upper cover 85 . The circuit board 83 is provided with the plurality of light intensity sensors 81 . Above the plurality of light intensity sensors 81 The plurality of discrete filters 81 are respectively provided, and the circuit board 83, the plurality of light intensity sensors 81 and the plurality of discrete filters 81 are jointly arranged in the housing 84 and covered above. The upper cover is 85. The collimated light enters the housing 84 from the upper cover 85 and is filtered by the plurality of discrete filters 81. The plurality of light intensity sensors 81 respectively receive the different filtered light. Filtered light in the frequency band.

In addition, each of the discrete filters 82 has a filter frequency band, and the filter frequency bands of the discrete filters 82 are different from each other. The collimated light rays are directed toward the plurality of discrete filters 82 , and are respectively filtered by the plurality of discrete filters 82 before being directed toward the plurality of light intensity sensors 81 . That is to say, each light intensity sensor 81 receives the collimated light filtered by one of the discrete filters 82 respectively. Specifically, the filtered collimated light received by each light intensity sensor 81 is in different frequency bands.

In this embodiment, the plurality of discrete filters 82 of the discrete light sensing unit 80 are each a band-pass filter used to allow light in a specific frequency band to pass.

Furthermore, the plurality of light intensity sensors 81 of the discrete light sensing unit 80 include at least one peak light intensity sensor and at least one valley light intensity sensor. The at least one peak light intensity sensor is used to sense whether the light in the characteristic frequency band is a peak value, and the at least one valley light intensity sensor is used to sense whether the light in the characteristic frequency band is a valley value. The plurality of discrete filters of the discrete light sensing unit 81 include at least one peak filter and at least one valley filter. The setting position of the at least one peak filter corresponds to the setting position of the at least one peak light intensity sensor, and the setting position of the at least one valley filter corresponds to the setting position of the at least one valley light intensity sensor. .

That is to say, the at least one peak light intensity sensor receives the collimated light filtered by the at least one peak filter, and the at least one valley light intensity sensor receives the collimated light that passes through the at least one This collimated light is filtered by the valley filter.

In addition, the plurality of light intensity sensing signals generated by the discrete light sensing unit 80 include at least one peak light intensity sensing signal or at least one valley light intensity sensing signal. The at least one peak light intensity sensor generates the at least one peak light intensity sensing signal according to the collimated light filtered by the at least one peak filter. The at least one valley light intensity sensor generates the at least one valley light intensity sensing signal according to the collimated light filtered by the at least one valley filter.

When the processing unit 20 receives the at least one peak light intensity sensing signal and the at least one valley light intensity sensing signal, the processing unit 20 determines whether the at least one peak light intensity sensing signal is greater than or equal to a peak threshold. and determining whether the at least one valley light intensity sensing signal is less than or equal to a valley threshold.

When the at least one peak light intensity sensing signal is greater than or equal to the peak threshold and the at least one valley light intensity sensing signal is less than or equal to the valley threshold, the detection result generated by the processing unit 20 is a warning signal, On the contrary, the detection result generated by the processing unit is a safety signal.

In another embodiment, when the processing unit 20 receives the at least one peak light intensity sensing signal and the at least one valley light intensity sensing signal, the processing unit 20 determines the at least one peak light intensity sensing signal. Whether a difference obtained by subtracting the at least one valley light intensity sensing signal from the signal is greater than or equal to a set threshold. When the difference is greater than or equal to the set threshold, the detection result generated by the processing unit 20 is a warning signal; otherwise, the detection result generated by the processing unit 20 is a safety signal.

In addition, in other embodiments, the discrete light sensing unit 80 may also include only one of the at least one peak light intensity sensor or the at least one valley light intensity sensor. The plurality of discrete filters of the discrete light sensing unit 81 may also include only one of at least one peak filter or at least one valley filter. The processing unit 20 only needs to determine whether the at least one peak light intensity sensing signal is greater than or equal to the peak threshold or whether the at least one valley light intensity sensing signal is less than or equal to the valley threshold, either of which is true. , the processing unit 20 generates the warning signal as the detection result, and conversely, the processing unit 20 generates the safety signal as the detection result.

Since the light received by the plurality of light intensity sensors 81 is filtered by the plurality of discrete filters 81 and only retains light in a specific frequency band, the light received by the plurality of light intensity sensors 81 generates The light intensity signals respectively correspond to the light intensity of light in a specific frequency band. And by judging the light intensity of the light in a specific frequency band, it can be judged whether the Raman scattering light scattered by the object 111 conforms to the Raman scattering spectrum of the specific content, thereby determining whether the object 111 contains the specific content.

For example, when the discrete spectroscopic detection device is used to detect malachite green, the detection light generated by the laser emitter is set to a laser light with a wavelength of 785 nanometers (nm), the band-stop filter or the low The filter frequency band of the pass filter is set to 785 (nm). The number of the light intensity sensors 81 is nine, and they are used to sense the light intensity signals of nine characteristic points.

In other words, this band-rejection filter is used to filter out light with a wavelength of 785 (nm) and allow light with wavelengths other than 785 (nm) to pass through. This low-pass filter is used to filter out light with wavelengths less than 785 (nm) and pass light with wavelengths exceeding 785 (nm).

Please refer to Figures 6 and 7. Figure 6 is a schematic diagram of the Raman shift spectrum of malachite green. The Raman shift refers to the reciprocal difference between the wavelength of the detection light incident on the object 111 and the wavelength of the Raman scattered light scattered by the object 111 .

For example, the wavelength of the detection light is λ ₀ , and the wavelength of the Raman scattering light scattered by the object 111 is λ. Therefore, the Raman shift is:

And according to Figure 6, it can be seen that the light of malachite green at Raman shifts of 315 (cm ^-1 ), 530 (cm ^-1 ), 900 (cm ^-1 ), 1010 (cm ^-1 ) and 1260 (cm ^-1 ) The intensity is strong and is the peak value of the Raman shift spectrum, and the peak value of the Raman shift spectrum is set as the characteristic point.

As shown in Figure 7, since the wavelength of the detection light is set to 785 (nm), 785 (nm) is substituted as the wavelength of the detection light as λ ₀ , and the Raman shift is calculated as 315 (cm ^-1 ) , 530 (cm ^-1 ), 900 (cm ^-1 ), 1010 (cm ^-1 ) and 1260 (cm ^-1 ), the corresponding Raman scattering wavelengths are 805 (nm), 819 (nm), 845 (nm) ), 853(nm) and 871(nm).

Therefore, as shown in FIG. 4 , the filter frequency bands of the peak filters of the discrete filters 82 are respectively set to 805 (nm), 819 (nm), 845 (nm), and 853 (nm). and 871(nm).

In addition, according to Figure 6, it can be seen that the light intensity of malachite green at the Raman shifts of 240 (cm ^-1 ), 440 (cm ^-1 ), 760 (cm ^-1 ) and 1140 (cm ^-1 ) is weak. The trough value of the Man shift spectrum is set, and the trough value of the Raman shift spectrum is set as a characteristic point.

As shown in Figure 7, since the wavelength of the detection light is set to 785 (nm), 785 (nm) is substituted as the wavelength of the detection light as λ ₀ , and the Raman shift is calculated as 240 (cm ^-1 ) , 440 (cm ^-1 ), 760 (cm ^-1 ) and 1140 (cm ^-1 ), the corresponding Raman scattering wavelengths are 800 (nm), 813 (nm), 835 (nm) and 862 (nm).

Therefore, as shown in FIG. 4 , the filter frequency bands of the plurality of valley filters of the plurality of discrete filters 82 are respectively set to 800 (nm), 813 (nm), 835 (nm) and 862 (nm). ).

The positions of the plurality of discrete filters 82 are set according to the filter frequency bands of the plurality of discrete filters 82 , and the plurality of peak filters and the plurality of valley filters are arranged staggered, that is, with The adjacent filter to any peak filter is a valley filter. For example, the filter frequency bands of the plurality of discrete filters 82 are set to 805 (nm), 800 (nm) and 871 (nm) in the first column from left to right, and in the second column from left to right. The right order is set to 813 (nm), 819 (nm) and 862 (nm), and the third column is set to 845 (nm), 835 (nm) and 853 (nm) from left to right. .

To sum up, since various contents have their own specific Raman scattering spectra, and based on the Raman scattering spectrum, the Raman shift of the characteristic point can be known, and the discrete light sensing can be set based on the Raman shift. The combination of the plurality of discrete filters 82 of the unit 80 can be used to determine whether the Raman scattered light scattered by the object 111 conforms to a specific Raman spectrum, thereby determining whether it contains specific content. Therefore, the present invention can be used to detect whether the object 111 contains specific content.

That is to say, although the above embodiment takes the detection of malachite green as an example, when other compounds need to be detected, the present invention can replace the discrete light sensing unit 80. The replaced discrete light sensing unit The plurality of discrete filters 82 of 80 have different filter frequency band combinations, which can be used to detect different specific contents.

Therefore, the advantages of the present invention are that it is low in cost, small in size, modular, and can meet the requirement of detecting different specific contents by replacing the filter frequency band combinations of the plurality of discrete filters 82 of the discrete light sensing unit 80 needs. Therefore, the present invention is a discrete spectroscopic device used in Raman spectroscopy that has a simple structure and can be miniaturized.

The above descriptions are only preferred embodiments of the present invention, and do not limit the present invention in any form. Although the present invention has been disclosed above in preferred embodiments, it is not intended to limit the present invention. Anyone familiar with the art Personnel, without departing from the scope of the technical solution of the present invention, may use the technical content disclosed above to make some changes or modifications to equivalent embodiments with equivalent changes. However, any content that does not depart from the technical solution of the present invention shall be based on Technical Essence of the Invention Any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solution of the invention.

Claims (10)

1. A discrete spectroscopic inspection apparatus comprising:

a shell provided with an object to be measured accommodating groove for accommodating the object to be measured;

the light source emitter is arranged in the shell and generates a detection light; wherein the frequency of the detected light is a first frequency;

a spectroscope, which is arranged in the shell; wherein the light source emitter emits the detection light toward the spectroscope;

the condensing lens is arranged on one side wall of the to-be-detected object accommodating groove of the shell; the detection light is reflected by the spectroscope, then irradiates to the condenser, and is condensed on the object to be detected accommodated in the object to be detected accommodating groove through the condenser, so that a Raman scattered light is scattered by the object to be detected; wherein the raman scattered light comprises light having a plurality of frequencies, and the plurality of frequencies of the raman scattered light are different from the first frequency;

the optical filter is arranged in the shell; the Raman scattered light is reflected back to the spectroscope through the collecting mirror, refracted by the spectroscope and then emitted to the optical filter; the optical filter filters out light rays with the frequency being the first frequency;

a collimation unit arranged in the shell; the Raman scattered light passes through the optical filter and then irradiates the collimating unit, and a collimated light is formed through the collimating unit;

a discrete light sensing unit arranged in the shell; the collimation light rays are emitted to the discrete light sensing unit from the collimation unit, and the discrete light sensing unit generates a plurality of light intensity sensing signals according to the collimation light rays;

the processing unit is electrically connected with the discrete light sensing unit, receives the light intensity sensing signals and generates a detection result according to the light intensity sensing signals.

2. The discrete spectroscopic device as claimed in claim 1, wherein the discrete light sensing unit comprises:

a plurality of light intensity sensors respectively electrically connected with the processing unit; wherein the plurality of light intensity sensors are arranged in a matrix;

the setting positions of the plurality of discrete filters correspond to the setting positions of the light intensity sensor respectively; the plurality of discrete optical filters are respectively provided with a filtering frequency band, and the plurality of filtering frequency bands are mutually different;

the collimated light is emitted to the plurality of discrete filters, filtered by the plurality of discrete filters, and emitted to the plurality of light intensity sensors.

3. The apparatus of claim 2, wherein the plurality of discrete filters of the discrete light sensing unit are band pass filters, respectively.

4. The discrete spectroscopic detection device of claim 2, wherein said plurality of light intensity sensors of said discrete light sensing unit comprises at least one peak light intensity sensor;

wherein the plurality of discrete filters of the discrete light sensing unit comprise at least one peak filter;

wherein the setting position of the at least one peak light filter corresponds to the setting position of the at least one peak light intensity sensor;

wherein the plurality of light intensity sensing signals generated by the discrete light sensing unit comprise at least one peak light intensity sensing signal;

wherein the at least one peak light intensity sensor generates the at least one peak light intensity sensing signal according to the collimated light filtered by the at least one peak filter;

when the processing unit receives the at least one peak light intensity sensing signal, the processing unit judges whether the at least one peak light intensity sensing signal is larger than or equal to a peak threshold value;

when the at least one peak light intensity sensing signal is greater than or equal to the peak threshold value, the detection result generated by the processing unit is a warning signal, otherwise, the detection result generated by the processing unit is a safety signal.

5. The discrete spectroscopic detection device of claim 2, wherein said plurality of light intensity sensors of said discrete light sensing unit comprises at least one valley light intensity sensor;

wherein the plurality of discrete filters of the discrete light sensing unit comprise at least one valley filter;

wherein the setting position of the at least one valley filter corresponds to the setting position of the at least one valley light intensity sensor;

wherein the plurality of light intensity sensing signals generated by the discrete light sensing unit comprise at least one valley light intensity sensing signal;

the at least one valley light intensity sensor generates at least one valley light intensity sensing signal according to the collimated light filtered by the at least one valley filter;

when the processing unit receives the at least one valley light intensity sensing signal, the processing unit judges whether the at least one valley light intensity sensing signal is smaller than or equal to a valley threshold value;

when the at least one valley light intensity sensing signal is smaller than or equal to the valley threshold, the detection result generated by the processing unit is a warning signal, otherwise, the detection result generated by the processing unit is a safety signal.

6. The discrete spectroscopic detection device as claimed in claim 2, wherein said plurality of light intensity sensors of said discrete light sensing unit comprises at least one peak light intensity sensor and at least one valley light intensity sensor;

the plurality of discrete optical filters of the discrete optical sensing unit comprise at least one peak optical filter and at least one valley optical filter;

the setting position of the at least one peak value optical filter corresponds to the setting position of the at least one peak light intensity sensor, and the setting position of the at least one valley value optical filter corresponds to the setting position of the at least one valley light intensity sensor;

wherein the plurality of light intensity sensing signals generated by the discrete light sensing unit comprise at least one peak light intensity sensing signal and at least one valley light intensity sensing signal;

wherein the at least one peak light intensity sensor generates the at least one peak light intensity sensing signal according to the collimated light filtered by the at least one peak filter;

the at least one valley light intensity sensor generates at least one valley light intensity sensing signal according to the collimated light filtered by the at least one valley filter;

when the processing unit receives the at least one peak light intensity sensing signal and the at least one valley light intensity sensing signal, the processing unit judges whether the at least one peak light intensity sensing signal is larger than or equal to a peak threshold value and judges whether the at least one valley light intensity sensing signal is smaller than or equal to a valley threshold value;

when the at least one peak light intensity sensing signal is greater than or equal to the peak threshold value and the at least one valley light intensity sensing signal is less than or equal to the valley threshold value, the detection result generated by the processing unit is a warning signal, otherwise, the detection result generated by the processing unit is a safety signal.

7. The discrete spectroscopic detection device as claimed in claim 2, wherein said plurality of light intensity sensors of said discrete light sensing unit comprises at least one peak light intensity sensor and at least one valley light intensity sensor;

the plurality of discrete optical filters of the discrete optical sensing unit comprise at least one peak optical filter and at least one valley optical filter;

the setting position of the at least one peak value optical filter corresponds to the setting position of the at least one peak light intensity sensor, and the setting position of the at least one valley value optical filter corresponds to the setting position of the at least one valley light intensity sensor;

wherein the plurality of light intensity sensing signals generated by the discrete light sensing unit comprise at least one peak light intensity sensing signal and at least one valley light intensity sensing signal;

wherein the at least one peak light intensity sensor generates the at least one peak light intensity sensing signal according to the collimated light filtered by the at least one peak filter;

the at least one valley light intensity sensor generates at least one valley light intensity sensing signal according to the collimated light filtered by the at least one valley filter;

when the processing unit receives the at least one peak light intensity sensing signal and the at least one valley light intensity sensing signal, the processing unit judges whether a difference value obtained by subtracting the at least one valley light intensity sensing signal from the at least one peak light intensity sensing signal is larger than or equal to a set threshold value;

when the difference is greater than or equal to the set threshold, the detection result generated by the processing unit is a warning signal, otherwise, the detection result generated by the processing unit is a safety signal.

8. The discrete spectroscopic device of claim 1, wherein the collimating unit comprises:

a first convex lens having a first focal length;

the second convex lens is provided with a second focal length, and the second focal length is larger than the first focal length of the first convex lens;

wherein the position of a first focus of the first convex lens is the same as the position of a second focus of the second convex lens;

the Raman scattered light passes through the optical filter, then irradiates the first convex lens of the collimation unit, focuses through the first convex lens, irradiates the second convex lens of the collimation unit, and is collimated into the collimated light through the second convex lens.

9. The discrete spectroscopic device of claim 1, wherein the filter is a band reject filter or a low pass filter;

wherein an incident angle of the detection light incident on the spectroscope is 45 degrees;

wherein the light source emitter is a laser emitter.

10. The discrete spectroscopic device of claim 1, further comprising an actuation button electrically connected to the processing unit;

when the starting key is triggered, the starting key generates and transmits a starting detection signal to the processing unit;

when the processing unit receives the start detection signal, the processing unit starts the light source emitter to generate the detection light, receives the light intensity sensing signals generated by the discrete light sensing unit, and generates the detection result according to the light intensity sensing signals.