Portable fluorescent test paper reader

Abstract

The utility model relates to the technical field of fluorescent test paper reading equipment, in particular to a portable fluorescent test paper reading instrument, which comprises a linear moving component, a test paper objective table arranged on the linear moving component, test paper placed on the test paper objective table, a linear laser arranged on one side above the test paper objective table, and a laser arranged on the other side above the linear laser. A linear CCD is arranged on the other side above the test paper objective table, a cylindrical mirror is mounted at the bottom of the linear CCD, linear laser emitted by the linear laser irradiates the test paper objective table, and reflected light is received by the linear CCD after passing through the cylindrical mirror. According to the portable fluorescent test paper reading instrument, the linear laser is adopted as a light source, so that the problems of insufficient light source intensity, poor monochromaticity, poor directivity and the like of traditional fluorescent test paper reading equipment are effectively solved. The linear laser has the characteristics of high strength, good monochromaticity and strong directivity, so that the excitation and collection efficiency of fluorescence signals is remarkably improved, and the accuracy and sensitivity of detection are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fluorescent test paper reading equipment, in particular to a portable fluorescent test paper reader. Background Art

[0002] In biomedical research and clinical diagnosis, fluorescent test strips are widely used as a rapid and convenient detection tool for the quantitative analysis of various biomarkers.

[0003] However, traditional fluorescent test strip readers often suffer from several issues, such as insufficient light source intensity, poor monochromaticity, and poor directionality. These issues result in inefficient fluorescence signal excitation and collection, impacting detection accuracy and sensitivity. Furthermore, traditional devices often utilize point-source lasers, resulting in slow scanning speeds and requiring complex mechanical structures to scan the test strip point by point. This not only increases the complexity and cost of the devices, but also limits their portability and application. Utility Model Content

[0004] The purpose of the present utility model is to provide a portable fluorescent test strip reader to solve the problems commonly existing in traditional fluorescent test strip reading devices proposed in the above background technology, such as insufficient light source intensity, poor monochromaticity, and poor directionality, which lead to low efficiency in fluorescence signal excitation and collection, affecting the accuracy and sensitivity of detection.

[0005] To achieve the above-mentioned purpose, the utility model provides a portable fluorescent test paper reader, including a linear moving component, a test paper stage is provided on the linear moving component, a test paper is placed on the test paper stage, a linear laser is provided on one side above the test paper stage, a linear CCD is provided on the other side above the test paper stage, a cylindrical mirror is installed at the bottom of the linear CCD, the linear laser emitted by the linear laser is irradiated on the test paper stage, and the reflected light is received by the linear CCD after passing through the cylindrical mirror.

[0006] Preferably, the linear motion component includes a shell, a screw rod is installed inside the shell, a screw rod slider is installed on the screw rod, one end of the screw rod is driven to rotate by a screw rod motor, and the other end of the screw rod is rotatably connected to the inner wall of the shell through a bearing.

[0007] Preferably, a suction cup is installed on the top of the screw slider, and a strip hole is opened on the top surface of the shell. The suction cup slides in cooperation with the strip hole, and the top of the suction cup adsorbs and fixes the bottom of the test paper stage.

[0008] Preferably, guide blocks are installed on both sides of the screw slider, a guide hole is opened on the surface of the guide block, a guide rod is provided through the guide hole, and both ends of the guide rod are welded and fixed to the inner wall of the shell.

[0009] Preferably, the lower surface of the cylindrical mirror is cylindrical, and the upper surface is flat or spherical.

[0010] Preferably, the cylindrical mirror is used to change the imaging size, converting the light source into linear light, and precisely docking with the linear CCD behind it.

[0011] Preferably, the cylindrical mirror is detachably fixed at the bottom light inlet of the linear CCD.

[0012] Preferably, the angle between the light emitted from the linear laser and the plane of the test paper stage is 30-60 degrees.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This portable fluorescent test strip reader uses a linear laser as its light source, effectively overcoming the issues of insufficient light intensity, poor monochromaticity, and poor directionality often encountered in conventional fluorescent test strip readers. The linear laser's high intensity, good monochromaticity, and strong directionality significantly improve the excitation and collection efficiency of the fluorescent signal, thereby enhancing detection accuracy and sensitivity.

[0015] The instrument combines a linear motion component with a linear CCD to achieve rapid, continuous scanning of test strips. Compared to the point-by-point scanning method of traditional devices using a point-source laser, this significantly increases detection speed, simplifies the mechanical structure, and reduces device complexity and cost. Furthermore, the device can be easily disassembled for storage and transport. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the linear motion component in the present utility model;

[0018] Figure 3 This is a schematic structural diagram of the guide block in the present invention;

[0019] The meaning of each number in the figure is:

[0020] 1. Linear laser; 2. Linear motion assembly; 21. Bar hole; 22. Housing; 23. Screw; 24. Screw slider; 25. Screw motor; 26. Suction cup; 27. Guide block; 271. Guide hole; 28. Guide rod; 3. Test paper stage; 4. Cylindrical mirror; 5. Linear CCD. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] The utility model provides a portable fluorescent test paper reader, such as Figure 1-Figure 3 As shown, the system comprises a linear motion assembly 2, mounted on a test strip stage 3. A test strip is placed on the stage 3. A linear laser 1 is positioned above the stage 3 on one side, and a linear CCD 5 is positioned above the stage 3 on the other side. A cylindrical mirror 4 is mounted at the base of the linear CCD 5. Linear laser light emitted by the linear laser 1 illuminates the test strip stage 3, and the reflected light passes through the cylindrical mirror 4 and is received by the linear CCD 5. The high-intensity, highly monochromatic, and directional linear laser light emitted by the linear laser 1 precisely illuminates the test strip on the stage 3, effectively stimulating the fluorescent markers on the test strip and generating a bright fluorescent signal. This fluorescent signal is precisely focused and shaped by the cylindrical mirror 4 before being efficiently received by the linear CCD 5, ensuring complete capture and accurate conversion of the fluorescent signal. The linear motion assembly 2 drives the test strip on the stage 3 back and forth, and the continuous operation of the linear laser 1 and the linear CCD 5 enables rapid, continuous scanning of the test strip. This scanning method not only improves the detection speed, but also reduces the complexity of the mechanical structure and motion errors, thereby ensuring high accuracy and stability of the detection. The entire reader is compact in design and simple in structure, making it easy to carry and use on the move. At the same time, the easy replacement and cleaning of the test paper stage 3, as well as the stability and durability of the linear laser 1 and linear CCD 5, enhance the practicality and reliability of the instrument. Linear CCD is a device commonly used in optical imaging and signal acquisition. Its core feature is that it can only capture one row of visible pixels. It is a structure of the existing technology and will not be described in detail here.

[0023] In this embodiment, the linear motion assembly 2 includes a housing 22, within which is mounted a screw 23, on which is mounted a screw slider 24. One end of the screw 23 is driven for rotation by a screw motor 25, while the other end of the screw 23 is rotatably connected to the inner wall of the housing 22 via a bearing. This design not only ensures the stability of the test strip during scanning but also improves scanning accuracy and repeatability, providing a reliable foundation for subsequent fluorescence signal detection.

[0024] Specifically, a suction cup 26 is mounted on the top of the screw slider 24. A strip-shaped hole 21 is formed in the top surface of the housing 22. The suction cup 26 slidably engages the strip-shaped hole 21, and the top of the suction cup 26 secures the bottom of the test paper stage 3 with suction. This design ensures that the test paper will not fall off or shift during movement, further improving the stability and accuracy of scanning.

[0025] Furthermore, guide blocks 27 are mounted on either side of the lead screw slider 24. Guide holes 271 are defined in the guide blocks 27, through which guide rods 28 extend. The ends of the guide rods 28 are welded to the inner wall of the housing 22. This structure forms a stable guide system. This design effectively prevents the lead screw slider 24 from shaking or deflecting during movement, ensuring the linear motion accuracy of the test strip stage 3, and thus improving the stability and reliability of the entire reader.

[0026] Furthermore, the lower surface of the cylindrical mirror 4 is cylindrical, and the upper surface is flat or spherical.

[0027] Furthermore, cylindrical mirror 4 is used to change the image size, converting the light source into a linear beam, allowing for precise alignment with the linear CCD 5 behind it. This design enables cylindrical mirror 4 to change the image size, converting the light source into a linear beam, and precisely aligning with the linear CCD 5 behind it. This function not only improves the efficiency of fluorescence signal collection but also ensures accurate signal conversion and transmission, providing strong support for subsequent quantitative fluorescence analysis.

[0028] Furthermore, cylindrical mirror 4 is removably fixed to the bottom light inlet of linear CCD 5. This design facilitates cleaning, replacement, or adjustment of cylindrical mirror 4, improving the maintenance convenience and flexibility of the reader. Furthermore, the removable design facilitates selection of the appropriate cylindrical mirror 4 based on actual needs, allowing for readings of different fluorescent test strips.

[0029] Furthermore, the angle between the emission light from the linear laser 1 and the plane of the test strip stage 3 is 30-60 degrees. This design ensures that the linear laser can illuminate the test strip, generating a bright fluorescence signal. The appropriate angle not only improves the excitation efficiency of the fluorescence signal but also reduces the interference of stray light, providing excellent conditions for subsequent fluorescence signal detection.

[0030] When using the portable fluorescent test strip reader of the present invention, the test strip to be tested is first placed on the test strip loading platform 3, ensuring that the test strip is flat and wrinkle-free. Next, the reader is activated, causing key components such as the linear laser 1, linear CCD 5, and linear motion assembly 2 to enter operation.

[0031] The linear laser 1 emits high-intensity, monochromatic, and highly directional linear laser light, which is precisely irradiated at an angle of 30-60 degrees onto the surface of the test paper on the test paper stage 3. The fluorescent markers on the test paper produce bright fluorescent signals under the excitation of the laser.

[0032] The fluorescent signal reflected by the test paper is precisely focused and shaped by cylindrical mirror 4 and efficiently received by linear CCD 5. Linear CCD 5 converts the received optical signal into an electrical signal for subsequent data processing and analysis.

[0033] While the fluorescence signal is being collected, linear motion assembly 2 begins operation. Screw motor 25 drives screw 23, which in turn drives screw slider 24 and the test strip on test strip stage 3 back and forth. The sliding fit between suction cup 26 and strip hole 21, along with the guide system formed by guide block 27 and guide rod 28, ensures the stability and accuracy of the test strip during movement. Through the continuous movement of the one-dimensional motor, the test strip is scanned quickly and continuously, enabling fluorescence signal detection along the entire strip.

[0034] The electrical signal converted by the linear CCD5 is transmitted to the reader's internal control system or external data processing equipment. After data processing and analysis, the fluorescence intensity distribution on the test strip is obtained, and the concentration or presence of the substance being tested can be inferred. Finally, the test results are output in the form of numbers, charts, or audio for user reference and judgment.

[0035] During use, the cylindrical mirror 4 can be cleaned, replaced or adjusted according to actual needs to ensure accurate collection and conversion of the fluorescent signal. At the same time, the easy replacement and cleaning of the test paper stage 3 also facilitates the daily maintenance and upkeep of the reader.

[0036] Finally, it should be noted that the linear laser 1, lead screw motor 25, etc. in this embodiment, the electronic components in the above parts are all universal standard parts or parts known to those skilled in the art. Their structures and principles can be known to those skilled in the art through technical manuals or through conventional experimental methods. In the idle area of ​​this device, all the above electrical components are connected by wires respectively. The specific connection means should refer to the working sequence between the electrical components in the above working principle to complete the electrical connection, which are all well-known technologies in the art.

[0037] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable fluorescent test strip reader, comprising a linear motion component (2), characterized in that: A test paper stage (3) is provided on the linear motion component (2), a test paper is placed on the test paper stage (3), a linear laser (1) is provided on one side above the test paper stage (3), a linear CCD (5) is provided on the other side above the test paper stage (3), a cylindrical mirror (4) is installed at the bottom of the linear CCD (5), the linear laser emitted by the linear laser (1) irradiates the test paper stage (3), and the reflected light is received by the linear CCD (5) after passing through the cylindrical mirror (4).

2. The portable fluorescent test paper reader according to claim 1, characterized in that: The linear motion assembly (2) includes a housing (22), a screw rod (23) is installed inside the housing (22), a screw slider (24) is installed on the screw rod (23), one end of the screw rod (23) is driven to rotate by a screw motor (25), and the other end of the screw rod (23) is rotatably connected to the inner wall of the housing (22) through a bearing.

3. The portable fluorescent test paper reader according to claim 2, characterized in that: A suction cup (26) is installed on the top of the screw slider (24), and a strip hole (21) is opened on the top surface of the housing (22). The suction cup (26) is slidably matched with the strip hole (21), and the top of the suction cup (26) adsorbs and fixes the bottom of the test paper loading platform (3).

4. The portable fluorescent test paper reader according to claim 3, characterized in that: Guide blocks (27) are installed on both sides of the screw slider (24), and a guide hole (271) is opened on the surface of the guide block (27). A guide rod (28) is provided through the guide hole (271), and both ends of the guide rod (28) are welded and fixed to the inner wall of the housing (22).

5. The portable fluorescent test paper reader according to claim 1, characterized in that: The lower surface of the cylindrical mirror (4) is cylindrical, and the upper surface is flat or spherical.

6. The portable fluorescent test paper reader according to claim 5, characterized in that: The cylindrical mirror (4) is used to change the size of the image, converting the light source into linear light, and precisely docking with the linear CCD (5) at the rear.

7. The portable fluorescent test paper reader according to claim 1, characterized in that: The cylindrical mirror (4) is detachably fixed at the bottom light inlet of the linear CCD (5).

8. The portable fluorescent test paper reader according to claim 1, characterized in that: The angle between the light emitted from the linear laser (1) and the plane of the test paper stage (3) is 30-60 degrees.

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