Device for time-sharing direct detection of transmission light characteristics of multiple liquid samples

Abstract

The utility model discloses a device for time-sharing direct detection of transmission light characteristics of a plurality of liquid samples, which comprises a light source, a photoelectric detector, a converter light guide device, a sample light guide device, a sample station, a sample upper platform and a sample lower platform, and the sample light guide device is arranged on the upper side and the lower side of the sample upper platform and the sample lower platform. The sample station is installed between the sample upper platform and the sample lower platform, the converter light guide device is installed on the outer side of the sample light guide device, and the photoelectric detector and the light source are arranged on the outer side of the converter light guide device. And meanwhile, the problem of inconsistent measurement conditions caused by changing the bending degree of the optical fiber is avoided, so that efficient, stable and accurate time-sharing detection of multiple samples is realized, the application range of multi-sample transmission characteristic measurement is greatly widened, and the measurement efficiency and stability are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of sample optical property measurement devices, and in particular to a device for time-division direct detection of the transmitted light properties of multiple liquid samples. Background Technology

[0002] In the field of time-division direct detection of the transmitted light characteristics of multiple liquid samples, since the liquid is being detected directly without a container for fixation, it is inconvenient to move the liquid. Therefore, there are currently two technical solutions: moving the light source and detector, and bending the optical fiber.

[0003] Option one involves fixing the sample and using a sophisticated mechanical system to move the light source or detector to align and measure each sample individually. This method involves frequent movement of precision optical components, which not only increases the risk of mechanical wear but may also cause components to loosen or measurement accuracy to decrease due to factors such as vibration and positional errors. Under long-term operation, the stability and reliability of the measurement results are difficult to guarantee.

[0004] Option two utilizes flexible optical fiber as the optical transmission medium. By fixing one end of the fiber and dynamically changing the position of the other end, different degrees of bending are used to guide the optical signal to different samples for time-division measurement. Theoretically, this method avoids direct movement of the sample and optical components, but its key lies in ensuring the stability of the optical transmission characteristics during fiber bending. However, in practice, even small changes in the degree of fiber bending and the bending radius can significantly affect the optical path, making it difficult to maintain consistent measurement conditions between different samples, thus affecting the accuracy and consistency of the measurement results.

[0005] In summary, the two existing technical solutions cannot meet the application scenarios with high requirements for measurement stability and consistency. There is an urgent need for a new device that can directly detect the light transmission characteristics of multiple liquid samples in a time-division manner to solve the above technical problems. Utility Model Content

[0006] The purpose of this invention is to solve the above-mentioned technical problems and provide a device for direct time-division detection of the light transmission characteristics of multiple liquid samples. This invention can achieve efficient, stable and accurate time-division detection of multiple samples without moving the sample, light source or detector, and avoids the problem of inconsistent measurement conditions caused by changing the degree of fiber bending. This will greatly broaden the application range of multi-sample light transmission characteristic measurement and improve measurement efficiency and stability.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a device for direct time-division detection of the light transmission characteristics of multiple liquid samples, including a light source, a photodetector, a converter light guide device, a sample light guide device, a sample station, an upper sample platform and a lower sample platform. The sample light guide device is installed on the upper and lower sides of the upper and lower sample platforms, the sample station is installed between the upper and lower sample platforms, the converter light guide device is installed on the outside of the sample light guide device, and the photodetector and the light source are located on the outside of the converter light guide device.

[0008] Preferably, the sample light guiding device further includes sample light guiding fiber A, sample light guiding fiber B and sample light guiding fiber C, sample light guiding fiber A is installed above the upper platform of the sample, sample light guiding fiber C is installed below the lower platform of the sample, and sample light guiding fiber B is installed between the upper platform of the sample and the lower platform of the sample.

[0009] Preferably, the converter light guiding device is installed in a strip or ring shape on the outside of the sample light guiding fiber A, sample light guiding fiber B and sample light guiding fiber C.

[0010] Preferably, the converter light guide device includes an output converter and an input converter, with the output converter arranged between the sample light guide device and the light source, and the input converter arranged between the sample light guide device and the photodetector.

[0011] Preferably, the output converter includes an output light guide fiber, an output light guide fiber head A, and an output light guide fiber head B. The output light guide fiber head A and the output light guide fiber head B are installed at both ends of the output light guide fiber. The output light guide fiber head A is located at the end closer to the light source, and the output light guide fiber head B is located at the end closer to the sample light guiding device.

[0012] Preferably, the input converter includes an input light guide fiber, an input light guide fiber head A, and an input light guide fiber head B. The input light guide fiber head A and the input light guide fiber head B are installed at both ends of the input light guide fiber. The input light guide fiber head A is located at the end closer to the photodetector, and the input light guide fiber head B is located at the end closer to the sample light guiding device.

[0013] Preferably, the number of sample light guide fibers A, B, and C, the number of sample stations, the number of input light guide fiber heads A, B, and C, and the number of output light guide fiber heads A, B, and C are all the same and greater than 1. The spacing between adjacent input light guide fiber heads A is equal to the spacing between the fiber heads of sample light guide fibers A, and the spacing between adjacent input light guide fiber heads B is twice the spacing between adjacent input light guide fiber heads A. The spacing between adjacent output light guide fiber heads A is equal to the spacing between the fiber heads of sample light guide fibers C, and the spacing between adjacent output light guide fiber heads B is twice the spacing between adjacent output light guide fiber heads A.

[0014] Preferably, the system also includes a slide rail, a slider, and a motor. The output converter and the input converter are mounted on the slider, which moves along the slide rail. The motor is mounted on the sample lower platform to control the height of the sample station.

[0015] The beneficial effects of this utility model are:

[0016] 1. All samples of this utility model are tested using the same light source and photodetector, avoiding measurement errors caused by differences in the light source and photodetector. The design of the converter light guide device ensures the stability and consistency of the optical path and improves the measurement accuracy.

[0017] 2. The converter light guide device of this utility model is not fixedly connected to the sample, light source, and photodetector, and can move freely. It can realize rapid time-division detection between different samples without being limited by the movement speed of the sample, light source, and photodetector, which can improve the detection speed.

[0018] 3. This utility model can achieve time-sharing detection of the sample by sharing a light source or sensor under the condition that the sample, light source and detector are fixed at the same time, by moving or rotating the optical path conversion device. It does not require moving the sample or light source and detector, which expands the applicable range of time-sharing scanning detection, simplifies the scanning structure, and can reduce the instrument manufacturing cost and the power consumption of the instrument.

[0019] 4. The number of light guide elements in the output converter and input converter can be configured according to actual needs to adapt to different sample detection requirements. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall elongated structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the other side of the long strip-shaped integral structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the elongated arrangement structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the overall ring-shaped structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the ring-shaped arrangement structure of this utility model.

[0025] In the diagram: 1. Light source; 2. Photodetector; 3. Converter light guide device; 31. Output converter; 311. Output light guide fiber head A; 312. Output light guide fiber head B; 313. Output light guide fiber; 32. Input converter; 321. Input light guide fiber head A; 322. Input light guide fiber head B; 323. Input light guide fiber; 4. Sample light guide device; 41. Sample light guide fiber A; 42. Sample light guide fiber B; 43. Sample light guide fiber C; 5. Sample station; 6. Sample upper platform; 7. Sample lower platform; 8. Slide rail; 9. Slider; 10. Motor. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] like Figure 1-5 As shown, this utility model discloses a device for direct time-division detection of the light transmission characteristics of multiple liquid samples, including a light source 1, a photodetector 2, a converter light guide device 3, a sample light guide device 4, a sample station 5, an upper sample platform 6, and a lower sample platform 7. The sample light guide device 4 is installed on the upper and lower sides of the upper sample platform 6 and the lower sample platform 7, the sample station 5 is installed between the upper sample platform 6 and the lower sample platform 7, the converter light guide device 3 is installed on the outside of the sample light guide device 4, and the photodetector 2 and the light source 1 are located on the outside of the converter light guide device 3.

[0028] The sample light guiding device 4 also includes sample light guiding fiber A41, sample light guiding fiber B42 and sample light guiding fiber C43. Sample light guiding fiber A41 is installed above the sample upper platform 6, sample light guiding fiber C43 is installed below the sample lower platform 7, and sample light guiding fiber B42 is installed between the sample upper platform 6 and the sample lower platform 7.

[0029] The converter light guide device 3 is installed in a strip or ring shape on the outside of the sample light guide fiber A41, sample light guide fiber B42 and sample light guide fiber C43.

[0030] The converter light guide device 3 includes an output converter 31 and an input converter 32. The output converter 31 is arranged between the sample light guide device 4 and the light source 1, and the input converter 32 is arranged between the sample light guide device 4 and the photodetector 2.

[0031] The output converter 31 includes an output light guide fiber 313, an output light guide fiber head A311, and an output light guide fiber head B312. The output light guide fiber head A311 and the output light guide fiber head B312 are installed at both ends of the output light guide fiber 313. The output light guide fiber head A311 is located at the end closer to the light source 1, and the output light guide fiber head B312 is located at the end closer to the sample light guide device 4.

[0032] The input converter 32 includes an input light guide fiber 323, an input light guide fiber head A321, and an input light guide fiber head B322. The input light guide fiber head A321 and the input light guide fiber head B322 are installed at both ends of the input light guide fiber 323. The input light guide fiber head A321 is located at the end closer to the photodetector 2, and the input light guide fiber head B322 is located at the end closer to the sample light guide device 4.

[0033] The number of sample light guide fibers A41, B42, and C43 is the same as the number of sample stations, the number of input light guide fiber heads A321, B322, and 323, and the number of output light guide fiber heads A311, B312, and 313, and is greater than 1. The spacing between adjacent input light guide fiber heads A321 is equal to the spacing between the fiber heads of sample light guide fibers A41, and the spacing between adjacent input light guide fiber heads B322 is twice the spacing between adjacent input light guide fiber heads A321. The spacing between adjacent output light guide fiber heads A311 is equal to the spacing between the fiber heads of sample light guide fibers C43, and the spacing between adjacent output light guide fiber heads B312 is twice the spacing between adjacent output light guide fiber heads A311.

[0034] It also includes a slide rail 8, a slider 9 and a motor 10. An output converter 31 and an input converter 32 are mounted on the slider 9, which moves on the slide rail 8. The motor 10 is mounted on the sample lower platform 7 to control the height of the sample station 5.

[0035] Each output light guide fiber and input light guide fiber in output converter 31 and input converter 32 has a different tilt angle (the specific angle is not shown in the figure). Through this tilt angle, the light emitted by the light source is transmitted to each sample.

[0036] Example 1

[0037] like Figure 1 and Figure 2 As shown, this embodiment uses a long strip arrangement of the converter light guide device 3.

[0038] First, start light source 1 and photodetector 2 to ensure the system is in normal working condition and perform necessary calibrations, such as optical property testing of blank solution, to establish a blank calibration signal;

[0039] Place the sample to be tested on the sample station 5 and ensure that the light source 1, photodetector 2, converter light guide device 3 (including output converter 31 and input converter 32) and sample light guide device 4 are all correctly installed and connected;

[0040] The output converter 32 and the input converter 31 are moved synchronously and in constant relative position by the driving device. As the converters move, the light emitted by the light source 1 passes through the output light guide fiber 313 in the output converter 31 and is sequentially transmitted to the fiber head of the sample light guide fiber B42, illuminating the corresponding sample to be tested. The light transmitted through the sample (or the light excited by the sample or the light emitted by the sample itself) enters the input converter 32 through the fiber head of the sample light guide fiber C43, and is then transmitted to the photodetector 2 by the input light guide fiber 323. The photodetector 2 sequentially receives and analyzes the optical signals of each sample, thereby realizing the qualitative and quantitative analysis of each sample.

[0041] Example 2

[0042] like Figure 3 and Figure 4 As shown, this embodiment uses a ring-shaped arrangement of the converter light guide device 3.

[0043] First, start light source 1 and photodetector 2 to ensure the system is in normal working condition and perform necessary calibrations, such as optical property testing of blank solution, to establish a blank calibration signal;

[0044] Place the sample to be tested on the sample station 5 and ensure that the light source 1, photodetector 2, converter light guide device 3 (including input converter 31 and output converter 32) and sample light guide fiber 4 are correctly installed and connected to form a ring structure.

[0045] By driving the output converter 31, the input converter 32 and the output converter 31 are rotated. Since the relative positions of the input converter 32 and the output converter 31 are fixed, they rotate synchronously. As the output converter 31 rotates, the light emitted by the light source 1 passes through the output converter 31, through the output light guide fiber 313 of the output converter 31, and then is transmitted to the fiber head of the sample light guide fiber B42, and sequentially illuminates each sample to be tested. The light transmitted through the sample (or the light excited by the sample, or the light emitted by the sample itself) passes back through the input converter 32, and then through the input light guide fiber 323 of the input converter 32, and is transmitted to the photodetector 2. The photodetector 2 sequentially receives and analyzes the optical signals of each sample, thereby realizing the qualitative and quantitative analysis of each sample.

[0046] The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0047] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for time-division direct detection of the transmitted light properties of multiple liquid samples, characterized in that: It includes a light source (1), a photodetector (2), a converter light guide device (3), a sample light guide device (4), a sample station (5), an upper sample platform (6), and a lower sample platform (7). The sample light guide device (4) is installed on the upper and lower sides of the upper sample platform (6) and the lower sample platform (7). The sample station (5) is installed between the upper sample platform (6) and the lower sample platform (7). The converter light guide device (3) is installed on the outside of the sample light guide device (4). The photodetector (2) and the light source (1) are located on the outside of the converter light guide device (3).

2. The apparatus for time-division direct detection of the transmitted light properties of multiple liquid samples according to claim 1, characterized in that: The sample light guiding device (4) further includes sample light guiding fiber A (41), sample light guiding fiber B (42) and sample light guiding fiber C (43). Sample light guiding fiber A (41) is installed above the sample upper platform (6), sample light guiding fiber C (43) is installed below the sample lower platform (7), and sample light guiding fiber B (42) is installed between the sample upper platform (6) and the sample lower platform (7).

3. The device for time-division direct detection of the transmitted light properties of multiple liquid samples according to claim 2, characterized in that: The converter light guide device (3) is installed in a strip or ring shape on the outside of the sample light guide fiber A (41), sample light guide fiber B (42) and sample light guide fiber C (43).

4. The device for time-division direct detection of the transmitted light properties of multiple liquid samples according to claim 2, characterized in that: The converter light guide device (3) includes an output converter (31) and an input converter (32). The output converter (31) is arranged between the sample light guide device (4) and the light source (1), and the input converter (32) is arranged between the sample light guide device (4) and the photodetector (2).

5. The apparatus for time-division direct detection of the transmitted light properties of multiple liquid samples according to claim 4, characterized in that: The output converter (31) includes an output light guide fiber (313), an output light guide fiber head A (311), and an output light guide fiber head B (312). The output light guide fiber head A (311) and the output light guide fiber head B (312) are installed at both ends of the output light guide fiber (313). The output light guide fiber head A (311) is located at the end closer to the light source (1), and the output light guide fiber head B (312) is located at the end closer to the sample light guide device (4).

6. The apparatus for time-division direct detection of the transmitted light properties of multiple liquid samples according to claim 4, characterized in that: The input converter (32) includes an input light guide fiber (323), an input light guide fiber head A (321), and an input light guide fiber head B (322). The input light guide fiber head A (321) and the input light guide fiber head B (322) are installed at both ends of the input light guide fiber (323). The input light guide fiber head A (321) is located at the end closer to the photodetector (2), and the input light guide fiber head B (322) is located at the end closer to the sample light guide device (4).

7. The apparatus for time-division direct detection of the transmitted light properties of multiple liquid samples according to claim 5 or 6, characterized in that: The number of sample light guide fibers A (41), B (42), and C (43) is the same as the number of sample stations, the number of input light guide fiber heads A (321), B (322), and C (323), and the number of output light guide fiber heads A (311), B (312), and C (313), and is greater than 1. The spacing between adjacent input light guide fiber heads A (321) is equal to the spacing between the fiber heads of sample light guide fibers A (41), and the spacing between adjacent input light guide fiber heads B (322) is twice the spacing between adjacent input light guide fiber heads A (321). The spacing between adjacent output light guide fiber heads A (311) is equal to the spacing between the fiber heads of sample light guide fibers C (43), and the spacing between adjacent output light guide fiber heads B (312) is twice the spacing between adjacent output light guide fiber heads A (311).

8. The apparatus for time-division direct detection of the transmitted light properties of multiple liquid samples according to claim 1 or 4, characterized in that: It also includes a slide rail (8), a slider (9) and a motor (10). An output converter (31) and an input converter (32) are mounted on the slider (9), which moves on the slide rail (8). The motor (10) is mounted on the sample lower platform (7) to control the height of the sample station (5).

Images