A portable two-dimensional fluorescence spectrometer

Abstract

The utility model discloses a portable two -dimensional fluorescence spectrometer, including integrated box, the integrated box includes box upper cover and lower box, the box upper cover can cover on the lower box, the lower box is fixed with circuit board, human -computer interaction module of electric connection with circuit board and optical detection module of electric connection with circuit board are provided in, the box upper cover still constructs with human -computer interaction module accommodating hole of human -computer interaction module adaptation. Through with the excitation light source, sample measurement, spectrum collection, circuit control and data display module integration in a portable box, make user not to carry additional notebook computer, power or connecting cable, can complete the detection work independently on the spot, greatly improved the portability and on -the -spot applicability of equipment.

Description

Technical Field

[0001] This utility model relates to the field of fluorescence spectroscopy detection technology, and more specifically to a portable two-dimensional fluorescence spectrometer. Background Technology

[0002] Fluorescence spectroscopy, due to its extremely high sensitivity and good selectivity, has been widely used in environmental monitoring, biochemistry, food safety, and other fields. By collecting the fluorescence emission spectra of substances excited by light of a specific wavelength, rapid qualitative and quantitative analysis can be performed.

[0003] Currently, fluorescence spectrometers on the market are mainly divided into two categories: large benchtop fluorescence spectrometers and portable fluorescence spectrometers. Large benchtop instruments are powerful, usually equipped with high-performance excitation sources and monochromators, providing comprehensive and accurate data. However, these devices are complex in structure, bulky, and expensive, and require a stable external power supply and experimental environment. Their operation also requires professional personnel, making them completely unsuitable for on-site testing scenarios requiring rapid and immediate response, such as outdoors or on production lines.

[0004] To meet the need for rapid on-site testing, some portable fluorescence spectrometers have emerged on the market. The inventors discovered some shortcomings in the design and application of existing portable devices.

[0005] First, regarding the choice of light source, many portable devices still use traditional short-arc xenon lamps or mercury lamps as excitation sources. These light sources have inherent drawbacks such as high power consumption, high heat generation, long preheating time, and short lifespan. This poses a significant challenge to portable devices that rely on battery power and require immediate on-demand and long-term stable operation, severely limiting their effective outdoor working time and reliability.

[0006] Secondly, regarding system integration, existing solutions are mostly separate or modular combinations, requiring users to temporarily connect multiple components such as light sources, optical fibers, sample holders, spectrometers, and laptops on-site. This design is cumbersome to operate, increases the risk of system failure, and the connection points are easily affected by vibration or environmental pollution, which can affect the optical path alignment, leading to unstable measurement results and making it difficult to adapt to complex on-site environments.

[0007] Therefore, there is an urgent need to design a highly integrated, easy-to-operate, and readily available two-dimensional fluorescence spectrometer for rapid on-site detection. Utility Model Content

[0008] Technical problem to be solved by the utility model In view of this, the present invention provides a portable two-dimensional fluorescence spectrometer, which solves at least one of the above problems by adopting the technical means of fixing a circuit board, a human-computer interaction module and an optical detection module in an integrated box.

[0009] Technical solution of this utility model The present invention discloses a portable two-dimensional fluorescence spectrometer, comprising an integrated housing, the integrated housing comprising an upper cover and a lower housing, the upper cover being able to cover the lower housing, and a circuit board, a human-machine interaction module electrically connected to the circuit board, and an optical detection module electrically connected to the circuit board being fixedly disposed in the lower housing. The top cover of the housing is also provided with a human-computer interaction module receiving hole adapted to the human-computer interaction module.

[0010] Furthermore, the optical detection module includes a cuvette holder, an excitation light source, and a spectral detection device, wherein the light emission center of the excitation light source forms a 90° angle with the incident light receiving end of the spectral detection device.

[0011] Furthermore, the circuit board integrates a main control unit, a light source driving circuit, a spectrometer data acquisition circuit, and a power management module. The main control unit is electrically connected to the human-machine interaction module via wires, the light source driving circuit is electrically connected to the excitation light source via wires, the spectrometer data acquisition circuit is electrically connected to the spectral detection device via wires, and the power management module is used to manage the power supply.

[0012] Furthermore, the human-computer interaction module is a color serial port screen.

[0013] Furthermore, the excitation light source is a deep ultraviolet LED light source.

[0014] Furthermore, the top cover of the box is also provided with a cuvette mounting hole, through which the cuvette can be placed and removed.

[0015] Furthermore, a power display screen is fixedly installed inside the lower housing, and a power display screen receiving hole is provided on the upper cover of the housing. The power display screen is adapted to the power display screen receiving hole, and the power display screen is electrically connected to the power management module through a wire.

[0016] Furthermore, a main switch button is fixedly installed inside the lower housing, and a main switch button hole is provided on the upper cover of the housing. The main switch button hole is adapted to the main switch button, and the main switch button is electrically connected to the power management module.

[0017] Furthermore, the circuit board also integrates a data storage module.

[0018] Furthermore, the circuit board also integrates a data communication module, and the lower housing is provided with a physical interface corresponding to the data communication module.

[0019] Beneficial effects (1) The portable two-dimensional fluorescence spectrometer of this invention integrates the excitation light source, sample measurement, spectral acquisition, circuit control, and data display modules into a single portable housing. Its compact and durable structure allows users to independently complete on-site testing without needing to carry an additional laptop, power supply, or connecting cables, greatly improving the portability and on-site applicability of the equipment. Simultaneously, this integrated design effectively protects the internal optical components, reduces environmental interference with the measurement results, and ensures the accuracy and reliability of the detection.

[0020] (2) The portable two-dimensional fluorescence spectrometer of this utility model adopts a color serial port screen as the human-computer interaction interface. Users can directly set parameters, start measurement, and view the spectrum in real time on the screen. The operation process is intuitive and simplified, reducing the professional requirements for operators.

[0021] (3) The portable two-dimensional fluorescence spectrometer of this utility model uses deep ultraviolet LED as the excitation light source. Compared with traditional xenon lamps or mercury lamps, it has the advantages of low power consumption, long life, no need for preheating, and high luminous stability, and is more suitable for portable devices that rely on battery power.

[0022] In addition to the purposes, features, and effects described above, this utility model has other purposes, features, and effects. The present utility model will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the housing of a portable fluorescence spectrometer according to this utility model; Figure 2 This is an exploded view of a portable fluorescence spectrometer according to this utility model; Figure 3 This is a schematic diagram of the internal structure of a portable fluorescence spectrometer according to the present invention.

[0024] The following are the labels in the diagram: 1. Top cover of the enclosure; 2. Human-machine interface module; 3. Circuit board; 4. Power display screen; 5. Main switch button; 6. Cuvette holder; 7. Spectroscopic detection device; 8. Fixing plate; 9. Excitation light source; 10. Power supply; 11. Lower enclosure; 12. Human-machine interface module receiving hole; 13. Power display screen receiving hole; 14. Cuvette mounting hole; 15. Main switch button hole. Detailed Implementation

[0025] To enable those skilled in the art to better understand this technical solution, the technical solution of this utility model will be clearly and completely described below in conjunction with the accompanying drawings and embodiments.

[0026] The structures, proportions, and sizes illustrated in the accompanying drawings are merely for illustrative purposes and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the disclosed technical content. Similarly, terms such as "front," "back," "upper," "lower," "top," "bottom," "inner," and "outer" used in this specification are merely for clarity and not intended to limit the scope of implementation. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0027] refer to Figures 1 to 3 As shown, a portable two-dimensional fluorescence spectrometer includes an integrated housing, which includes an upper cover 1 and a lower housing 11. The upper cover 1 can cover the lower housing 11, preferably the upper cover 1 is fastened to the lower housing 11, and the structure is compact and sturdy. A circuit board 3, a human-computer interaction module 2 and an optical detection module are fixedly installed inside the lower housing 11. The top cover 1 of the box is also provided with a human-computer interaction module receiving hole 12 that is adapted to the human-computer interaction module 2; The human-computer interaction module 2 is electrically connected to the circuit board 3 and is used to realize human-computer interaction. The optical detection module is electrically connected to the circuit board 3 and is used to collect fluorescence spectra.

[0028] Existing spectral analysis equipment is typically large in size, with separate structures, and relies on external computers for control and data display, resulting in inconvenience in portability and cumbersome on-site deployment and operation. The basic idea of ​​this utility model is to integrate the laser light source, sample measurement, spectral acquisition, circuit control, and data display modules into a single portable housing by fixing the circuit board, human-machine interface module, and optical detection module inside the housing. This compact structure eliminates the need for users to carry additional laptops, power supplies, or connecting cables, allowing them to independently complete all testing work on-site, greatly improving the portability and on-site applicability of the equipment.

[0029] The optical detection module includes a cuvette holder 6, an excitation light source 9, and a spectral detection device 7. The light emission center of the excitation light source 9 is at a 90° angle to the incident light receiving end of the spectral detection device 7. The cuvette holder 6 can support a cuvette, and the sample is placed inside the cuvette. The light emission center of the excitation light source 9 is aligned with the central region of the sample, and the incident light receiving end of the spectral detection device 7 is also aligned with the central region of the cuvette.

[0030] The excitation light source 9 and the spectral detection device 7 are orthogonally distributed at a 90° angle and are respectively installed on both sides of the cuvette holder, so that the excitation light emitted by the excitation light source is perpendicularly incident on the center of the sample, while the spectral detection device 7 receives the fluorescence emitted by the sample in a direction perpendicular to the excitation light. This arrangement can effectively prevent the excitation light from directly entering the spectral detection device, reduce stray light interference, and improve the signal-to-noise ratio.

[0031] The circuit board 3 is electrically connected to the excitation light source 9, the optical detection device 7 and the human-machine interaction module 2 respectively, and is used to drive and control the switching of the excitation light source 9, receive and process the spectral data collected by the optical detection device 7, and display the processed data on the human-machine interaction module 2.

[0032] The circuit board 3 integrates a main control unit, a light source driving circuit, a spectrometer data acquisition circuit, and a power management module. The main control unit is electrically connected to the human-machine interaction module 2 via a wire; The light source driving circuit is electrically connected to the excitation light source 9 through a wire. Preferably, the light source driving circuit adopts an LED constant current driving circuit, which can effectively avoid the driving current from exceeding the limit, avoid lightning strikes and power grid surges, and provide overcurrent and overvoltage protection, thus extending the life of the LED. The spectrometer data acquisition circuit is electrically connected to the spectral detection device 7 via wires to acquire complete fluorescence emission spectrometer data. The power management module manages the power supply and supports either a built-in lithium battery or an adapter connected via an external interface. To improve portability for outdoor field operations, a built-in lithium battery is preferred.

[0033] In some embodiments, a fixing plate 8 can be provided inside the lower housing 11 to fix the spectral detection device 7 and the power supply 10 to the fixing plate, which facilitates installation, fixing and replacement.

[0034] Specifically, the human-computer interaction module 2 uses a color serial port screen, which can intuitively present the operation interface and spectral results.

[0035] The excitation light source 9 is a deep ultraviolet LED light source with a center wavelength of 275±5nm.

[0036] The spectral detection device is a miniature fiber optic spectrometer, but other detection devices may also be used as needed.

[0037] In some embodiments, the top cover 1 of the housing is further provided with a cuvette mounting hole 14, through which the cuvette can be placed and removed. The top cover 1 is provided with a cuvette mounting hole 14 that is vertically corresponding to the cuvette holder 6. This design makes it convenient for users to place and remove standard-sized cuvettes directly from outside the device.

[0038] In addition, a power display screen 4 is fixedly installed inside the lower housing 11, and a power display screen receiving hole 13 is provided on the upper cover 1 of the housing. The power display screen 4 is adapted to the power display screen receiving hole 13. The power display screen 4 is electrically connected to the power management module through wires, and the power display screen 4 can display the working status of the power supply. In fact, the battery display screen 4 can also be integrated with the color serial port screen 2, using only one color serial port 2.

[0039] Of course, a main switch button 5 can also be fixedly installed inside the lower housing 11, and a main switch button hole 15 is correspondingly provided on the upper housing 1. The main switch button hole 15 is adapted to the main switch button 5, and the main switch button 5 is electrically connected to the power management module.

[0040] In some embodiments, the circuit board 3 also integrates a data storage module. This allows for real-time viewing of measurement results and the storage of measurement data and corresponding spectra in the device's internal storage module.

[0041] Based on this, a data communication module can also be integrated on the circuit board 3, and a physical interface corresponding to the data communication module is provided on the lower housing 11. After the measurement task is completed, the stored data can be exported in batches to an external computer or mobile terminal via the USB interface, facilitating further in-depth data analysis and processing.

[0042] Its basic working process is as follows: After pressing the main switch button, the power is turned on. After the user issues a measurement command through the human-machine interaction module 2, such as a color serial port screen, the main control unit on the circuit board 3 controls the deep ultraviolet LED to light up instantly, emitting 275nm excitation light. This excitation light shines through the cuvette to irradiate the sample. After the sample is excited, it produces fluorescence. The spectral detection device 7 collects the complete fluorescence emission spectrum in the 90° direction. The collected spectral signal is processed and calculated by the circuit board 3. Finally, the obtained spectral curve is plotted in real time and displayed on the human-machine interaction module. The whole process does not require connection to an external power supply. The operation is intuitive and convenient, realizing rapid on-site detection of fluorescence spectra.

[0043] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. If anyone skilled in the art, inspired by this description, designs a similar structure to the present invention without departing from its inventive spirit, such design shall fall within the protection scope of the present invention.

Claims

1. A portable two-dimensional fluorescence spectrometer, comprising an integrated housing, the integrated housing including an upper cover (1) and a lower housing (11), the upper cover (1) being capable of covering the lower housing (11), characterized in that, The lower housing (11) is fixedly provided with a circuit board (3), a human-machine interaction module (2) electrically connected to the circuit board (3), and an optical detection module electrically connected to the circuit board (3); The top cover (1) of the box is also provided with a human-computer interaction module receiving hole (12) that is compatible with the human-computer interaction module (2).

2. The portable two-dimensional fluorescence spectrometer according to claim 1, characterized in that, The optical detection module includes a cuvette holder (6), an excitation light source (9), and a spectral detection device (7). The light emission center of the excitation light source (9) is at a 90° angle to the incident light receiving end of the spectral detection device (7).

3. The portable two-dimensional fluorescence spectrometer according to claim 2, characterized in that, The circuit board (3) integrates a main control unit, a light source driving circuit, a spectrometer data acquisition circuit and a power management module. The main control unit is electrically connected to the human-machine interaction module (2) through a wire. The light source driving circuit is electrically connected to the excitation light source (9) through a wire. The spectrometer data acquisition circuit is electrically connected to the spectral detection device (7) through a wire. The power management module is used to manage the power supply.

4. The portable two-dimensional fluorescence spectrometer according to claim 3, characterized in that, The human-computer interaction module (2) is a color serial port screen.

5. The portable two-dimensional fluorescence spectrometer according to claim 3, characterized in that, The excitation light source (9) is a deep ultraviolet LED light source.

6. The portable two-dimensional fluorescence spectrometer according to claim 2, characterized in that, The top cover (1) of the box is also provided with a cuvette mounting hole (14), through which the cuvette can be placed and removed.

7. The portable two-dimensional fluorescence spectrometer according to claim 3, characterized in that, The lower housing (11) is also fixedly equipped with a power display screen (4), and the upper cover (1) of the housing is also provided with a power display screen receiving hole (13). The power display screen (4) is adapted to the power display screen receiving hole (13), and the power display screen (4) is electrically connected to the power management module through a wire.

8. The portable two-dimensional fluorescence spectrometer according to claim 7, characterized in that, The lower housing (11) is also fixedly provided with a main switch button (5), and the upper cover (1) of the housing is also provided with a main switch button hole (15). The main switch button hole (15) is adapted to the main switch button (5), and the main switch button (5) is electrically connected to the power management module.

9. The portable two-dimensional fluorescence spectrometer according to claim 1, characterized in that, The circuit board (3) also integrates a data storage module.

10. The portable two-dimensional fluorescence spectrometer according to claim 9, characterized in that, The circuit board (3) also integrates a data communication module, and the lower housing (11) is provided with a physical interface corresponding to the data communication module.

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