A spectrometer

Abstract

The utility model discloses a kind of spectrometer, including spectrometer main module and detection component, the spectrometer also includes handheld part and is arranged in the insertion part of the handheld part one end, the insertion part is tubular, for being close to or inserting measured object;The spectrometer main module is arranged in the handheld part, the detection component is arranged in the insertion part;The spectrometer main module with the detection component optical connection, the detection component is used to receive the light signal that the spectrometer main module issues, and the light signal is output to the measured object, reflected light signal is transmitted to the spectrometer main module, the spectrometer main module processes the reflected light signal and obtains optical spectrum detection information.The utility model significantly improves measurement efficiency, especially suitable for being susceptible to air humidity, easily oxidized by air substance measurement.

Description

Technical Field

[0001] This utility model relates to the field of spectroscopy technology, specifically to a spectrometer. Background Technology

[0002] As a green detection technology, spectral analysis technology has the advantages of high efficiency, speed, low cost, non-destructive and environmentally friendly, and is widely used in remote sensing measurement, crop monitoring, forest research, oceanographic research and other fields.

[0003] In existing techniques for measuring the spectral reflectance of granular, powdery, and semi-fluid substances (such as flour and grains), pretreatment steps such as sampling and sample preparation are typically required. These steps include evenly spreading, compacting, or placing the sample in a specific sample cell. This method is not only cumbersome and time-consuming, leading to reduced detection efficiency, but also causes changes in the physicochemical properties of the sample after sampling due to exposure to air. This is especially true for materials susceptible to environmental humidity or oxidation; short-term hygroscopic and oxidative reactions can significantly alter their surface state, compositional distribution, and optical properties, introducing measurement errors and affecting the accuracy and repeatability of the reflectance spectral data. Utility Model Content

[0004] This invention aims to address one of the technical problems in related technologies to a certain extent. Therefore, this invention provides a spectrometer.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a spectrometer, comprising a spectrometer main module and a detection component, the spectrometer further comprising a handheld part and an insertion part disposed at one end of the handheld part, the insertion part being tubular and used to approach or insert into the analyte; the spectrometer main module being disposed within the handheld part, and the detection component being disposed within the insertion part; the spectrometer main module being optically connected to the detection component, the detection component being used to receive the light signal emitted by the spectrometer main module and output the light signal to the analyte, and to transmit the reflected light signal to the spectrometer main module, the spectrometer main module processing the reflected light signal to obtain spectral detection information.

[0006] The present invention offers the following advantages: by directly inserting the analyte into the insertion part for in-situ measurement, it eliminates the sampling and sample preparation steps in the traditional measurement process, significantly improving measurement efficiency and fundamentally avoiding changes in the physicochemical properties of the sample due to contact with air during sampling. It is particularly suitable for measuring substances that are easily affected by air humidity or oxidized by air. At the same time, its core unit adopts a chip-type spectrometer, which greatly simplifies the hardware structure compared to conventional spectrometers, effectively reducing the overall cost and power consumption of the device, making it better suited for applications requiring large-scale deployment and long-term monitoring.

[0007] Optionally, the handheld part is provided with a mounting cavity, and one end of the handheld part is provided with a plug interface communicating with the mounting cavity. One end of the insertion part is plugged into the plug interface. The main module of the spectrometer includes a chip spectrometer module, a photodetector, and a lens disposed in the mounting cavity. The chip spectrometer module is used to provide a modulated light signal to the detection component, and the detection component illuminates the object under test with the modulated light signal. The detection component transmits the reflected light from the object under test to the mounting cavity, which is then focused by the lens and illuminates the photodetector, converted into an electrical signal, and transmitted back to the chip spectrometer module.

[0008] Optionally, the chip spectrometer module includes a broadband light source, a spectrometer chip, a driving circuit, a sampling circuit, and a control and computing unit. The control and computing unit is used to send driving signals to the driving circuit and process the electrical signals provided by the sampling circuit. The driving circuit is used to drive the broadband light source to provide an optical signal to the spectral chip according to the driving signal, and to drive the spectral chip to perform phase modulation on the optical signal to obtain a modulated optical signal, and to provide the modulated optical signal to the detection component via an optical fiber; The sampling circuit is used to convert the electrical signal sent by the photodetector into a digital signal.

[0009] Optionally, the spectral chip includes a plurality of cascaded active tunable spectral units and a phase modulator disposed on each of the active tunable spectral units. The phase modulator of each active tunable spectral unit is electrically connected to the control and computing unit. The phase modulator modulates the phase of the optical signal passing through the corresponding active tunable spectral unit according to the control signal issued by the control and computing unit.

[0010] Optionally, the active tunable spectral unit includes one or both of a microring resonator and a Mach-Zehnder interferometer.

[0011] Optionally, a multi-core optical fiber is provided, wherein the multi-core optical fiber is encapsulated within the insertion part along the length direction of the insertion part, one end of the multi-core optical fiber extends into the mounting cavity and connects to the main module of the spectrometer, and the other end of the multi-core optical fiber extends to the opening end of the insertion part.

[0012] Optionally, the detection component includes N+1 optical fibers, which are encapsulated within the insertion part along its length. One optical fiber is located at the center as the central fiber, and the remaining N optical fibers are arranged around the central fiber, where N is an integer greater than 2. One end of the central fiber extends into the mounting cavity and connects to the chip spectrometer module, while the other end extends to the opening of the insertion part for outputting a light signal to the object under test. One end of the remaining N optical fibers extends into the mounting cavity and is located in front of the light-incident side of the lens, while the other end extends to the opening of the insertion part for receiving the reflected light signal from the object under test.

[0013] Optionally, the spectrometer further includes a display device disposed on the handheld part; the display device is electrically connected to the main module of the spectrometer and is used to display the spectral detection information output by the main module of the spectrometer.

[0014] Optionally, the spectrometer further includes buttons, which are disposed on the handheld part; the buttons are electrically connected to the main module of the spectrometer and are used to set the operating parameters of the main module of the spectrometer.

[0015] Optionally, the handheld part is provided with a groove, and the display device and the button (40) are both disposed in the groove.

[0016] These features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. The preferred embodiments or means of this utility model will be shown in detail in conjunction with the accompanying drawings, but are not intended to limit the technical solutions of this utility model. In addition, each of these features, elements and components appearing in the following text and drawings is multiple and is labeled with different symbols or numbers for convenience, but all represent parts with the same or similar structure or function. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the chip spectrometer module of this utility model.

[0020] Figure 4 This is a schematic diagram of the structure of the spectral chip of this utility model.

[0021] Figure 5This is a schematic diagram of the structure of the active tunable spectral unit of this utility model, wherein the active tunable spectral unit is a cascade of multiple Mach-Zehnder interferometers.

[0022] Figure 6 This is a schematic diagram of the structure of the active tunable spectral unit of this utility model, wherein the active tunable spectral unit is a Mach-Zehnder interferometer and a plurality of the microring resonators cascaded together.

[0023] Figure 7 This is a schematic diagram of the structure of the active tunable spectral unit of this utility model, wherein the active tunable spectral unit is a cascade of multiple microring resonators.

[0024] Among them, 10 is the handheld part; 20 is the main module of the spectrometer; 21 is the chip spectrometer module; 22 is the photodetector; 23 is the lens; 30 is the insertion part; 31 is the multi-core optical fiber; 311 is the central optical fiber; 312 is the remaining N optical fibers; 32 is the sleeve; 40 is the button; and 50 is the display device. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this utility model and should not be construed as limiting it.

[0026] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this patent. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0027] In related technologies, the measurement process involves cumbersome steps such as sampling and sample preparation, which not only leads to low measurement efficiency but also makes it easy for the sample to come into contact with air during the operation, causing changes in physicochemical properties such as humidity and oxidation. This is especially true for easily deteriorated substances, which significantly interferes with the measurement accuracy. Conventional spectrometers are usually expensive and consume a lot of power. In scenarios that require the detection of a large number of target substances or long-term dynamic monitoring, they face the dual pressure of cost and energy consumption, resulting in poor applicability.

[0028] In view of this, such as Figure 1-7As shown, a spectrometer includes a main spectrometer module 20 and a detection component. The spectrometer also includes a handheld part 10 and an insertion part 30 disposed at one end of the handheld part 10. The insertion part 30 is tubular and used to approach or insert into the analyte. The main spectrometer module 20 is disposed within the handheld part 10, and the detection component is disposed within the insertion part 30. The main spectrometer module 20 is optically connected to the detection component. The detection component is used to receive light signals emitted by the main spectrometer module 20 and output the light signals to the analyte, and transmit the reflected light signals to the main spectrometer module 20. The main spectrometer module 20 processes the reflected light signals to obtain spectral detection information.

[0029] This invention allows for in-situ measurement by directly inserting the sample into the analyte, eliminating the sampling and sample preparation steps in traditional measurement processes. This significantly improves measurement efficiency and fundamentally avoids changes in the physicochemical properties of the sample due to contact with air during sampling. It is particularly suitable for measuring substances that are easily affected by air humidity or oxidized by air. At the same time, its core unit adopts a chip-based spectrometer, which greatly simplifies the hardware structure compared to conventional spectrometers, effectively reducing the overall cost and power consumption of the equipment, making it better suited for applications requiring large-scale deployment and long-term monitoring.

[0030] In some embodiments, the handheld part 10 is provided with a mounting cavity, and one end of the handheld part 10 is provided with a plug interface communicating with the mounting cavity. One end of the insertion part 30 is plugged into the plug interface. The spectrometer main module 20 includes a chip spectrometer module 21, a photodetector 22, and a lens 23 disposed in the mounting cavity. The chip spectrometer module 21 is used to provide a modulated light signal to the detection component and to irradiate the object under test with the modulated light signal through the detection component. The detection component transmits the reflected light from the object under test to the mounting cavity, which is then focused by the lens 23 and irradiated onto the photodetector 22, converted into an electrical signal, and transmitted back to the chip spectrometer module 21.

[0031] In some embodiments, the chip spectrometer module 21 includes a broadband light source, a spectrometer chip, a driving circuit, a sampling circuit, and a control and computing unit. The control and computing unit is used to send driving signals to the driving circuit and process the electrical signals provided by the sampling circuit. The driving circuit is used to drive the broadband light source to provide an optical signal to the spectral chip according to the driving signal, and to drive the spectral chip to perform phase modulation on the optical signal to obtain a modulated optical signal, and to provide the modulated optical signal to the detection component; The sampling circuit is used to convert the electrical signal sent by the photodetector 22 into a digital signal.

[0032] In some embodiments, the spectral chip includes a plurality of cascaded active tunable spectral units and a phase modulator disposed on each of the active tunable spectral units. The phase modulator of each active tunable spectral unit is electrically connected to the control and computing unit. The phase modulator modulates the phase of the optical signal passing through the corresponding active tunable spectral unit according to the control signal issued by the control and computing unit.

[0033] In some embodiments, the active tunable spectral unit includes one or both of a microring resonator and a Mach-Zehnder interferometer.

[0034] In some embodiments, such as Figure 7 As shown, the active tunable spectral unit is the microring resonator, which includes a microring resonant cavity structure and an optical waveguide coupled to the microring resonant cavity structure. The phase modulator is disposed on the microring resonant cavity structure. Multiple microring resonator structures are cascaded, and each of the multiple microring resonator structures has a different ring length.

[0035] In some embodiments, such as Figure 5 As shown, the active tunable spectral unit is the Mach-Zehnder interferometer, which has two tuning arms of unequal lengths. The phase modulator is disposed on at least one of the tuning arms, and multiple Mach-Zehnder interferometers are cascaded.

[0036] In some embodiments, such as Figure 6 As shown, the active tunable spectral unit includes the Mach-Zehnder interferometer and the microring resonator. The Mach-Zehnder interferometer has two tuning arms of unequal length, and the phase modulator is disposed on at least one of the tuning arms. The microring resonator includes a microring resonant cavity structure and an optical waveguide coupled to the microring resonant cavity structure, and the phase modulator is disposed on the microring resonant cavity. The Mach-Zehnder interferometer and multiple microring resonators are cascaded in sequence.

[0037] In some embodiments, the detection component includes a multi-core optical fiber 31, which is encapsulated within the insertion portion 30 along its length. One end of the multi-core optical fiber 31 extends into the mounting cavity and is connected to the spectrometer main body module 20, while the other end of the multi-core optical fiber 31 extends to the opening end of the insertion portion 30.

[0038] In some embodiments, such as Figure 2As shown, the detection component includes N+1 optical fibers, which are encapsulated within the insertion portion 30 along its length. One optical fiber is located at the center as a central optical fiber 311, and the remaining N optical fibers 312 are arranged around the central optical fiber 311, where N is an integer greater than 2. One end of the central optical fiber 311 extends into the mounting cavity and connects to the chip spectrometer module 21, while the other end extends to the opening end of the insertion portion 30 for outputting a light signal to the object under test. One end of the remaining N optical fibers 312 extends into the mounting cavity and is located in front of the light-incident side of the lens 23, while the other end extends to the opening end of the insertion portion 30 for receiving the reflected light signal from the object under test.

[0039] In some embodiments, the spectrometer further includes a display device 50, which is disposed on the handheld part 10; the display device 50 is electrically connected to the main body module 20 of the spectrometer and is used to display the spectral detection information output by the main body module 20 of the spectrometer.

[0040] In some embodiments, the spectrometer further includes a button 40, which is disposed on the handheld part 10; the button 40 is electrically connected to the main body module 20 of the spectrometer and is used to set the operating parameters of the main body module 20 of the spectrometer.

[0041] In some embodiments, the handheld part 10 is provided with a groove, and the display device 50 and the button 40 are both disposed in the groove. The display device 50 is a liquid crystal display screen, which is embedded in the bottom of the groove. The button 40 may include a power button, a measurement button, and a parameter adjustment button, etc., and the parameter adjustment button is used to adjust the wavelength range, sampling frequency, etc. of the spectral detection.

[0042] The spectrometer provided by this invention achieves in-situ, rapid, and efficient measurement. Through insertion-type measurement, the probe of the detection component can be directly inserted into the sample, eliminating the need for cumbersome pretreatment steps such as traditional sampling and sample preparation (e.g., uniform spreading, compaction, or filling of the sample cell). This significantly shortens measurement time and greatly improves detection efficiency, making it ideal for industrial online monitoring or on-site screening scenarios requiring rapid feedback. It effectively preserves the original properties of the sample, resulting in more accurate and reliable measurement results: avoiding potential changes in the physicochemical properties of the sample when exposed to air, such as moisture absorption, oxidation, or volatilization. This is particularly important for measuring materials susceptible to environmental humidity, easily oxidized by air, or with unstable properties, reducing errors introduced by sample processing at the source and improving the accuracy and representativeness of the measurement results. The system is compact and portable, suitable for both on-site and online applications: the chip-type spectrometer is characterized by its small size, light weight, and low power consumption. Combined with the insertion probe, the entire measurement system is easily integrated, miniaturized, and portable, eliminating reliance on large laboratory instruments. It is easy to carry to different sites for testing and has low cost and power consumption.

[0043] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A spectrometer, comprising a main spectrometer module (20) and a detection component, characterized in that, The spectrometer also includes a handheld part (10) and an insertion part (30) disposed at one end of the handheld part (10). The insertion part (30) is tubular and is used to approach or insert the analyte. The main body module (20) of the spectrometer is disposed in the handheld part (10), and the detection component is disposed in the insertion part (30). The main body module (20) of the spectrometer is optically connected to the detection component. The detection component is used to receive the light signal emitted by the main body module (20) of the spectrometer and output the light signal to the analyte. It transmits the reflected light signal to the main body module (20), and the main body module (20) of the spectrometer processes the reflected light signal to obtain spectral detection information.

2. The spectrometer according to claim 1, characterized in that, The handheld part (10) is provided with a mounting cavity. One end of the handheld part (10) is provided with a plug interface that communicates with the mounting cavity. One end of the insertion part (30) is plugged into the plug interface. The main body module (20) of the spectrometer includes a chip spectrometer module (21), a photodetector (22) and a lens (23) disposed in the mounting cavity. The chip spectrometer module (21) is used to provide a modulated light signal to the detection component and to irradiate the object under test through the detection component. The detection component transmits the reflected light of the object under test to the mounting cavity, which is then focused by the lens (23) and irradiated onto the photodetector (22), converted into an electrical signal and transmitted back to the chip spectrometer module (21).

3. The spectrometer according to claim 2, characterized in that, The chip spectrometer module (21) includes a broadband light source, a spectrometer chip, a driving circuit, a sampling circuit, and a control and calculation unit. The control and calculation unit is used to send driving signals to the driving circuit and process the electrical signals provided by the sampling circuit. The driving circuit is used to drive the broadband light source to provide an optical signal to the spectral chip according to the driving signal, and to drive the spectral chip to perform phase modulation on the optical signal to obtain a modulated optical signal, and to provide the modulated optical signal to the detection component; The sampling circuit is used to convert the electrical signal sent by the photodetector (22) into a digital signal.

4. The spectrometer according to claim 3, characterized in that, The spectral chip includes multiple cascaded active tunable spectral units and a phase modulator disposed on each of the active tunable spectral units. The phase modulator of each active tunable spectral unit is electrically connected to the control and computing unit. The phase modulator modulates the phase of the optical signal passing through the corresponding active tunable spectral unit according to the control signal issued by the control and computing unit.

5. The spectrometer according to claim 4, characterized in that, The active tunable spectral unit includes one or both of the following: a microring resonator and a Mach-Zehnder interferometer.

6. The spectrometer according to claim 2, characterized in that, The detection component includes a multi-core optical fiber (31), which is encapsulated in the insertion part (30) along the length direction of the insertion part (30). One end of the multi-core optical fiber (31) extends into the mounting cavity and is connected to the main module (20) of the spectrometer, and the other end of the multi-core optical fiber (31) extends to the opening end of the insertion part (30).

7. The spectrometer according to claim 6, characterized in that, The multi-core optical fiber (31) includes N+1 optical fibers, one of which is located in the center as the central optical fiber (311), and the remaining N optical fibers (312) are arranged around the central optical fiber (311), where N is an integer greater than 2; one end of the central optical fiber (311) extends into the mounting cavity and is connected to the chip spectrometer module (21), and the other end of the central optical fiber (311) extends to the opening end of the insertion part (30) for outputting light signals to the test object; one end of the remaining N optical fibers (312) extends into the mounting cavity and is located in front of the light-incident side of the lens (23), and the other end of the remaining N optical fibers (312) extends to the opening end of the insertion part (30) for receiving the reflected light signals of the test object.

8. The spectrometer according to any one of claims 1-7, characterized in that, The spectrometer also includes a display device (50), which is disposed on the handheld part (10); the display device (50) is electrically connected to the main module (20) of the spectrometer and is used to display the spectral detection information output by the main module (20) of the spectrometer.

9. The spectrometer according to claim 8, characterized in that, The spectrometer also includes a button (40), which is located on the handheld part (10); the button (40) is electrically connected to the main body module (20) of the spectrometer and is used to set the working parameters of the main body module (20).

10. The spectrometer according to claim 9, characterized in that, The handheld part (10) is provided with a groove, and the display device (50) and the button (40) are both disposed in the groove.

Images