Spectrum detection probe and spectrometer

Abstract

The utility model discloses a spectrum detection probe and a spectrograph, which comprise a shell, an opening cavity is formed in the shell, a plurality of spectrum detection modules are arranged in the cavity, a plurality of light-transmitting windows for light rays to pass through are arranged on the shell, and the light-transmitting windows and the spectrum detection modules are correspondingly arranged. The light transmitting window covers the detection surface of the spectrum detection module so that the spectrum detection module can emit and receive light through the light transmitting window, the spectrum detection module comprises an optical fiber and a photoelectric detector, an optical fiber end face is formed at one end of the optical fiber, and the optical fiber end face and the inner side wall of the light transmitting window are arranged in an attached mode or arranged at intervals. According to the utility model, the shell is provided with the plurality of light-transmitting windows and the spectrum detection modules corresponding to the light-transmitting windows, so that the spectrum detection probe can be embedded into a material pile for multi-point detection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spectral detection devices, in particular to a spectral detection probe and a spectrometer. BACKGROUND

[0002] Spectral detection analysis technology is an analysis method based on optical principles, which obtains information about the chemical composition and material properties of a substance by measuring the absorption or emission of light of different wavelengths by the substance. It is widely used in chemical analysis, biomedical science, material science, environmental detection, food safety and other fields. The spectral detection probe is a front-end device for collecting and measuring spectral data.

[0003] In related technologies, spectrometers are generally divided into benchtop spectrometers and portable spectrometers according to the use environment. The benchtop spectrometer is mainly fixedly arranged in a production line or a laboratory for use, and the portable spectrometer is mainly used for on-site rapid detection. The benchtop spectrometer can usually only perform single-point detection and cannot realize multi-point detection, which limits its application in some scenarios requiring multi-point detection. The portable spectrometer of the prior art also needs to perform multiple single-point detections when performing a multi-point detection task, which is cumbersome to operate. Moreover, when detecting solid accumulations, the spectrometer needs to be buried in the accumulation for detection, which has high requirements for the overall air tightness, heat dissipation, communication and other aspects of the spectrometer, and is not convenient to maintain. Practical new type content

[0004] The present application aims to solve one of the technical problems in the related art to some extent. To this end, the present application provides a spectral detection probe and a spectrometer, which are convenient to carry and can simultaneously perform multi-point detection.

[0005] In a first aspect, to achieve the above object, the present application adopts the following technical solution: a spectral detection probe, comprising a shell, an open-ended cavity is formed in the shell, a plurality of spectral detection modules are arranged inside the cavity, a plurality of light-transmitting windows through which light passes are arranged on the shell, the light-transmitting windows and the spectral detection modules are arranged correspondingly, the light-transmitting windows cover the detection surfaces of the spectral detection modules, so that the spectral detection modules can emit and receive light through the light-transmitting windows, the spectral detection module comprises an optical fiber and a photodetector, one end of the optical fiber forms an optical fiber end face, and the optical fiber end face is arranged in abutment with or spaced apart from the inner side wall of the light-transmitting window.

[0006] In the technical solution, the plurality of light transmission windows are arranged on the shell, and the spectrum detection modules corresponding to the light transmission windows are arranged inside the shell, the spectrum detection modules emit light to the light transmission windows through the optical fibers and receive the reflected light entering the light transmission windows through the photodetectors to realize spectrum detection, the light transmission windows and the shell are matched to improve the protection level of the spectrum detection probe, and the spectrum detection probe is convenient to maintain and replace; the plurality of light transmission windows are arranged on the shell, and the spectrum detection modules corresponding to the light transmission windows are arranged to enable the spectrum detection probe to simultaneously perform multi-point detection.

[0007] Preferably, the shell is cylindrical, and the two side end faces are respectively open ends and closed ends, the closed end is provided with a light transmission window, and the side face of the shell is provided with a plurality of light transmission windows, and the light transmission windows are correspondingly provided with spectrum detection modules on the side of the shell interior.

[0008] Preferably, a lens group is further arranged between the optical fiber end face and the light transmission window, and the lens group at least includes one lens.

[0009] Preferably, the shell is a cylinder or a prism, and the light transmission windows on the side face of the shell are arranged in discrete linear arrangement on the side face of the shell.

[0010] Preferably, the optical fiber end face is arranged at the center of the light transmission window, the photodetector is a plurality of, and the plurality of photodetectors are uniformly distributed around the optical fiber end face.

[0011] Preferably, the light transmission window is embedded in the shell, and the outer surface of the light transmission window is flush with the outer surface of the shell.

[0012] Preferably, the light transmission window is a glass window, and the shell is a stainless steel shell.

[0013] In the second aspect, to achieve the above object, the application further provides a spectrometer, which comprises a spectrum detection probe and a detection device, the spectrum detection probe is as any one of the above technical solutions, the detection device is fixedly connected to the opening of the cavity, and the cavity in the shell is closed. The beneficial effects of the spectrometer provided by the application are similar to those of the spectrum detection probe, and will not be described here.

[0014] Preferably, the detection device is sealingly connected to the shell of the spectrum detection probe, the cavity is a sealed cavity, and the sealed cavity is further filled with an antioxidant gas.

[0015] Preferably, the optical fiber is connected to the detection device, and the photodetector is electrically connected to the detection device through a signal line.

[0016] The features and advantages of the present application will be more apparent from the following detailed description along with the accompanying drawings. The best mode for carrying out the present application or the best method for practicing the present application will be shown in the detailed description along with the accompanying drawings. However, the detailed description and the accompanying drawings are not intended to limit the technical solutions of the present application. In addition, the features, elements and components appearing in the following detailed description and the accompanying drawings are multiple, and are marked with different symbols or numbers for the convenience of representation, but all represent the same or similar structures or components. BRIEF DESCRIPTION OF DRAWINGS

[0017] The present application will be further described below in conjunction with the accompanying drawings:

[0018] Figure 1 A structural schematic diagram of a spectrum detection probe according to an embodiment of the present application;

[0019] Figure 2 A structural schematic diagram of a spectrum detection module according to an embodiment of the present application;

[0020] Figure 3 A structural schematic diagram of a lens group connecting structure according to an embodiment of the present application;

[0021] Figure 4 A structural schematic diagram of a spectrometer according to an embodiment of the present application.

[0022] In the drawings: 100, housing; 110, light-transmitting window; 200, spectrum detection module; 210, optical fiber; 211, optical fiber end face; 212, lens group; 213, lens support; 220, photodetector; 230, signal line; 300, detection device. DETAILED DESCRIPTION

[0023] The embodiments of the present application will be described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. Based on the embodiments in the embodiments, it is intended to explain the present application, and cannot be understood as limiting the present application.

[0024] In the present specification, "one embodiment" or "an example" or "an example" means that a specific feature, structure or property described in connection with the embodiment itself can be included in at least one embodiment of the present disclosure. The appearance of the phrase "in one embodiment" at various places in the specification does not necessarily mean the same embodiment.

[0025] A spectrometer is a device that obtains information such as the chemical composition and physical properties of a substance by measuring the absorption and reflection of light of different wavelengths. Although desktop spectrometers have high detection accuracy, when measuring deposits, the detection module needs to be buried inside the deposit for measurement. In some measurement scenarios, multi-point measurements are also required at different positions of the deposit. The desktop spectrometer is large in size, and it is difficult to require the entire machine to have a high level of protection. In addition, the detection module is fixedly connected to the entire machine, and it is inconvenient to replace the detection point. Therefore, the desktop spectrometer cannot complete the detection tasks in the above scenarios.

[0026] Based on the fact that the spectrometer used in the above-mentioned scenarios needs to be portable and have a high level of protection, the technical personnel of this application have proposed a spectrum detection probe. By setting the detection module inside the probe, and then burying the probe in the deposit for measurement, since the detection probe is small in size and is set inside the shell, the spectrum detection probe has the advantages of being easy to carry and having a high level of protection. However, when multi-point detection is required at multiple locations in the deposit, the measurement point needs to be changed multiple times, which is inconvenient. In some scenarios, when multiple locations of the deposit need to be monitored in real time at the same time, multiple detection probes need to be used for measurement, which is inconvenient. Therefore, this application proposes a spectrum detection probe and a spectrometer capable of multi-point measurement.

[0027] like Figure 1 、 2 As shown, a spectral detection probe includes a shell 100, a cavity with an open end is formed in the shell 100, and a plurality of spectral detection modules 200 are arranged inside the cavity. The shell 100 is provided with a plurality of light-transmitting windows 110 for light to pass through, and the light-transmitting windows 110 and the spectral detection modules 200 are arranged correspondingly. The light-transmitting windows 110 cover the detection surface of the spectral detection module 200 so that the spectral detection module 200 can emit and receive light through the light-transmitting window 110. The spectral detection module 200 includes an optical fiber 210 and a photodetector 220. A fiber end face 211 is formed at one end of the optical fiber 210, and the fiber end face 211 is arranged in contact with the inner wall of the light-transmitting window 110 or at a certain interval.

[0028] In use, the spectral detection probe is inserted into the accumulated matter, one end of the optical fiber 210 is provided with an optical fiber end face 211 to emit light outward, and the other end is connected to a light source. The light is emitted to the surface of the accumulated matter through the light transmission window 110, and then reflected. The reflected light is detected by the photoelectric detector 220 after passing through the light transmission window 110, and the information of the reflected light is obtained, so that it is determined what elements are contained in the accumulated matter. In this embodiment, a plurality of light transmission windows 110 and corresponding spectral detection modules 200 are distributed at different positions of the shell 100 to realize spectral detection of different positions in the accumulated matter. It should be noted that the specific positions of the light transmission window 110 and the spectral detection module 200 and the relative position relationship therebetween are not limited in this embodiment, as long as the spectral detection module 200 can emit and receive light through the light transmission window 110.

[0029] In this embodiment, as shown in Figure 1 , a plurality of light transmission windows 110 are arranged on the shell 100, and corresponding spectral detection modules 200 are arranged inside the shell 100. The spectral detection module 200 emits light to the light transmission window 110 through the optical fiber 210 and receives the reflected light entering the light transmission window 110 through the photoelectric detector 220 to realize spectral detection. The light transmission window 110 cooperates with the shell 100 to improve the protection level of the spectral detection probe and facilitate maintenance and replacement. The plurality of light transmission windows 110 arranged on the shell 100 and the corresponding spectral detection modules 200 enable the spectral detection probe to perform multi-point detection simultaneously.

[0030] In some embodiments, as shown in Figure 1 , the shell 100 is cylindrical, and the two side end faces are respectively open end and closed end. The closed end is provided with a light transmission window 110, and the side surface of the shell 100 is provided with a plurality of light transmission windows 110, and the light transmission window 110 is provided with a corresponding spectral detection module 200 on the side of the shell 100. The shell 100 is cylindrical, which facilitates the insertion of the spectral detection probe into the accumulated matter. The closed end of the shell 100 is provided with a detection unit composed of a light transmission window 110 and a spectral detection module 200, which can more conveniently detect the specified position of the accumulated matter.

[0031] In some embodiments, as shown in Figure 3As shown, the fiber end face 211 of the optical fiber 210 and the light-transmitting window 110 are further provided with a lens group (212), the lens group 212 at least includes one lens, and the lens group 212 is fixedly connected between the optical fiber 210 and the light-transmitting window 110 through a lens support 213. The lens group 212 is used to control and adjust the light beam in the optical fiber 210, and the spot size can be controlled by setting the focal length of the lens group 212, wherein the type of the lens group 212 can be a collimating lens or a beam expander.

[0032] In some embodiments, as shown in Figure 1 As shown, the shell 100 is provided as a cylinder or a prism, and the light-transmitting windows 110 located on the side surface of the shell 100 are arranged in discrete linear arrangement on the side surface of the shell 100, and the specific arrangement can be provided as discrete linear arrangement with equal intervals or discrete linear arrangement with unequal intervals. It should be noted that the light-transmitting windows 110 can also be provided in other arbitrary arrangement on the shell 100.

[0033] In some embodiments, as shown in Figure 2 As shown, the fiber end face 211 is arranged at the center position of the light-transmitting window 110, and the photodetector 220 is provided as a plurality of photodetectors, and the plurality of photodetectors 220 are uniformly distributed around the fiber end face 211. In this embodiment, the number and specific arrangement of the photodetectors 220 are not limited, and can be one or more, which can be determined according to the use requirement.

[0034] In some embodiments, the light-transmitting window 110 is embedded in the shell 100, and the outer surface of the light-transmitting window 110 is flush with the outer surface of the shell 100. The light-transmitting window 110 covers the spectral detection module 200 and is embedded in the shell 100 to be flush with the shell 100, which can not only transmit light but also protect the spectral detection module 200.

[0035] In some embodiments, the light-transmitting window 110 is provided as a glass window, and the shell 100 is provided as a stainless steel shell. In this embodiment, the specific material of the light-transmitting window 110 and the shell 100 is not limited, and only serves as a preferred implementation manner. In other embodiments, the light-transmitting window 110 and the shell 100 can also be made of other materials, for example, the light-transmitting window 110 can also be made of acrylic, synthetic resin or other light-transmitting materials, and the shell 100 can be made of other materials that are firm and wear-resistant.

[0036] As shown in Figure 4As shown, the embodiment also provides a spectrometer, comprising a spectral detection probe and a detection device 300, the spectral detection probe is the spectral detection probe according to any one of the above technical solutions, the detection device 300 is fixedly connected to the opening of the cavity and can close the cavity in the shell 100. By arranging the detection device 300 at the opening end of the spectral detection probe, a closed cavity is formed inside the shell 100 of the spectral detection probe, so that external substances are prevented from entering the spectral detection probe.

[0037] In some embodiments, the detection device 300 is sealingly connected to the shell 100 of the spectral detection probe, the cavity is a sealed cavity, and the sealed cavity is also filled with an antioxidant gas. The protection level of the spectral detection probe is improved, and the spectral detection module 200 is prevented from being oxidized and corroded. For example, the antioxidant gas can be nitrogen.

[0038] In some embodiments, the optical fiber 210 is connected to the detection device 300, and the photodetector 220 is electrically connected to the detection device 300 through the signal line 230. The detection device 300 is the combination of the remaining components of the spectrometer except the detection probe, including, for example, a light source assembly, a controller assembly, or a processor assembly, etc. The optical fiber 210 is connected to the light source assembly in the detection device 300, and the photodetector 220 is electrically connected to the controller assembly of the detection device 300 through the signal line 230.

[0039] In summary, the spectral detection probe and the spectrometer of the embodiment have the beneficial effects of small size, easy to carry, good sealing performance, high protection level, external substances are not easy to enter the spectral detection probe when buried in the accumulation for detection, and can simultaneously perform multi-point detection or multi-point real-time monitoring, and is easy to use.

[0040] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Those skilled in the art should understand that the present application includes but is not limited to the contents described in the above specific embodiments and the accompanying drawings. Any modification that does not deviate from the functional and structural principles of the present application will be included in the scope of the claims.

Claims

1. A spectrum detection probe, comprising a housing (100), characterized in that: A cavity with an open end is formed in the shell (100), and a plurality of spectrum detection modules (200) are arranged inside the cavity. A plurality of light-transmitting windows (110) for light to pass through are provided on the shell (100), and the light-transmitting windows (110) and the spectrum detection modules (200) are arranged correspondingly. The light-transmitting windows (110) cover the detection surface of the spectrum detection module (200), so that the spectrum detection module (200) can emit and receive light through the light-transmitting windows (110). The spectrum detection module (200) includes an optical fiber (210) and a photodetector (220), and an optical fiber end face (211) is formed at one end of the optical fiber (210), and the optical fiber end face (211) is arranged in contact with or spaced from the inner side wall of the light-transmitting window (110).

2. The spectrum detection probe according to claim 1, characterized in that: The shell (100) is configured to be cylindrical, and the end faces on both sides are respectively configured to be an open end and a closed end, a light-transmitting window (110) is provided on the end face of the closed end, and a plurality of the light-transmitting windows (110) are distributed on the side of the shell (100), and spectrum detection modules (200) are provided one by one on the side of the light-transmitting windows (110) facing the interior of the shell (100).

3. The spectrum detection probe according to claim 1, characterized in that: A lens group (212) is further provided between the optical fiber end face (211) of the optical fiber (210) and the light-transmitting window (110), and the lens group (212) includes at least one lens.

4. The spectrum detection probe according to claim 2, characterized in that: The housing (100) is configured as a cylinder or a prism, and the light-transmitting windows (110) located on the side of the housing (100) are arranged in discrete linear patterns on the side of the housing (100).

5. The spectrum detection probe according to claim 1, characterized in that: The optical fiber end face (211) is arranged in close contact with the center of the light-transmitting window (110), and the photoelectric detectors (220) are provided in a plurality, and the plurality of photoelectric detectors (220) are evenly distributed around the optical fiber end face (211).

6. The spectrum detection probe according to any one of claims 1 to 5, characterized in that: The light-transmitting window (110) is embedded in the housing (100), and the outer surface of the light-transmitting window (110) is flush with the outer surface of the housing (100).

7. The spectrum detection probe according to any one of claims 1 to 5, characterized in that: The light-transmitting window (110) is configured as a glass window, and the housing (100) is configured as a stainless steel housing.

8. A spectrometer comprising a spectrum detection probe and a detection device (300), characterized in that: The spectrum detection probe is configured as a spectrum detection probe as claimed in any one of claims 1 to 7, and the detection device (300) is fixedly connected to the opening of the cavity and is capable of closing the cavity in the housing (100).

9. The spectrometer according to claim 8, characterized in that The detection device (300) is sealedly connected to the housing (100) of the spectrum detection probe, and the cavity is configured as a sealed cavity, which is also filled with an antioxidant gas.

10. The spectrometer according to claim 9, characterized in that The optical fiber (210) is connected to the detection device (300), and the photodetector (220) is electrically connected to the detection device (300) via a signal line.

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