Interpretation device of immunochromatography analyzer

Abstract

The application provides an immunochromatography analysis interpretation device, the device comprises a shell, the shell is internally provided with a main control board, the main control board comprises a display area and an acquisition area; the sensor is arranged in the acquisition area of the main control board; the display unit is arranged in the display area of the main control board, and the display unit and the sensor are located on the two sides of the main control board respectively; the optical unit covers the sensor and is used for providing an optical signal for the sensor; the power supply unit is used for supplying power to the optical unit and the display unit; the optical unit comprises a light guide base, a light source plate and a light source base; the light guide base comprises a hollow area and a light grid, the hollow area can allow the optical unit to enter, the light grid can enable light emitted by the light source assembly to irradiate the sensor through the light grid, and the light guide base can be in butt joint and fixed with the main control board; the light source plate is used for carrying light source components; the light source base and the light guide base clamp the light source plate to be combined and fixed.

Description

Technical Field

[0001] The present application relates to the technical field of immunochromatographic analysis, and in particular to an immunochromatographic analyzer reading device. Background Art

[0002] Colloidal gold carries a negative charge in a weakly alkaline environment and can form a strong bond with the positively charged groups of protein molecules. Since this bond is an electrostatic bond, it does not affect the biological properties of the protein. In addition to binding with proteins, colloidal gold can also bind to many other biological macromolecules, such as SPA, PHA, ConA, etc. Based on some physical properties of colloidal gold, such as high electron density, particle size, shape and color reaction, plus the immune and biological properties of the conjugate, colloidal gold is widely used in immunology, histology, pathology and cell biology. Colloidal gold labeling is essentially a coating process in which macromolecules such as proteins are adsorbed onto the surface of colloidal gold particles. The adsorption mechanism may be that the negative charge on the surface of the colloidal gold particles forms a strong bond with the positively charged groups of the protein due to electrostatic adsorption. The immunogold labeling technique mainly utilizes the high electron density of gold particles. Dark brown particles can be seen under a microscope at the gold-labeled protein binding site. When these markers are aggregated in large quantities at the corresponding ligands, red or pink spots can be seen with the naked eye. Therefore, it is used in qualitative or semi-quantitative rapid immunoassay methods. This reaction can also be amplified by the deposition of silver particles, which is called immunogold and silver staining. Colloidal gold technology has the advantages of convenience, specific sensitivity, strong stability, no need for special equipment and reagents, and intuitive result judgment. Therefore, it is particularly suitable for grassroots inspection personnel, large-scale testing, and large-scale censuses, etc., and has huge development potential and broad application prospects.

[0003] The principle of immunochromatography is to first fix specific antibodies to a certain zone of the nitrocellulose membrane. When one end of the dry nitrocellulose is immersed in the sample (urine or serum), the sample will move forward along the membrane due to capillary action. When it moves to the area where the antibody is fixed, the corresponding antigen in the sample will specifically bind to the antibody. If immunocolloidal gold or immunoenzyme staining is used, the area can show a certain color, thereby achieving specific immunodiagnosis.

[0004] When light shines on metal, the electrical properties of the material change. This kind of light-induced electrical phenomenon is collectively called the photoelectric effect. The photoelectric effect is divided into photoelectron emission, photoconductivity effect and barrier photoelectric effect, also known as the photovoltaic effect. The former phenomenon occurs on the surface of an object, also known as the external photoelectric effect. The latter two phenomena occur inside an object, called the internal photoelectric effect.

[0005] Photoelectric sensors generally consist of two parts: processing pathways and processing elements. The basic principle is to convert the measured changes into changes in light signals based on the photoelectric effect, and then further convert non-electrical signals into electrical signals with the help of photoelectric elements. The photoelectric effect refers to irradiating an object with light, which can be regarded as a series of photons with a certain energy bombarding the object. At this time, the photon energy is transferred to the electron, and the entire energy of a photon is absorbed by an electron at one time. After the electron obtains the energy transferred by the photon, its state will change, so that the object irradiated with light will produce a corresponding electrical effect. The photoelectric detection method has the advantages of high precision, fast response, non-contact, etc., and it can measure many parameters. The sensor has a simple structure and flexible and diverse forms. Therefore, photoelectric sensors are widely used in detection and control. Summary of the invention

[0006] In order to solve the problems in the prior art of unstable test results and low ability of the equipment to recognize low values, while avoiding the excessive size of the immunochromatographic analysis device, the present application provides a compact immunochromatographic analyzer reading device using a photoelectric sensor.

[0007] The technical solution of this application is as follows:

[0008] 1. An immunochromatographic analyzer reading device, comprising:

[0009] A housing is provided with:

[0010] A main control board, the main control board comprising a display area and a collection area;

[0011] A sensor, wherein the sensor is arranged in a collection area of ​​the main control board;

[0012] A display unit, wherein the display unit is arranged in a display area of ​​the main control board,

[0013] The display unit and the sensor are respectively located on two sides of the main control board.

[0014] an optical unit, the optical unit covering the sensor and providing an optical signal to the sensor;

[0015] A power supply unit is used to provide power to the optical unit and the display unit.

[0016] 2. The device according to claim 1, wherein:

[0017] The optical unit includes a light guide base, a light source plate and a light source base;

[0018] The light guide base includes a hollow area and a grating, wherein the hollow area can accommodate the entry of the optical unit, and the grating can allow the light emitted by the light source assembly to irradiate the sensor through the grating, and the light guide base can be docked and fixed with the main control board;

[0019] The light source board is used to carry the light source components;

[0020] The light source base and the light guide base are assembled and fixed by clamping the light source plate.

[0021] 3. The device according to item 1, further comprising a test strip control mechanism, wherein the test strip control mechanism comprises an external button, an internal lever, a clamping member, a spring, a moving member and a spring, wherein the moving member abuts against the lower portion of the shell through the spring, and the clamping members are arranged on both sides of the moving member.

[0022] 4. The device according to item 3, wherein one end of the internal lever abuts against the clamping member, and the other end is fixed to the lower part of the shell together with the external button.

[0023] 5. The device according to item 2, wherein a plurality of light source assemblies are arranged on one of the planes of the light source panel.

[0024] 6. The device according to item 2, wherein the light source base is a shell capable of accommodating and fixing the light source board.

[0025] 7. The device according to item 2, wherein the light-guiding base is made of light-proof plastic.

[0026] 8. The device according to item 1, wherein the central control unit is arranged on a main control board.

[0027] 9. The device according to item 1, wherein a reset switch is also provided on the main control board.

[0028] 10. The device according to item 1, wherein the display unit comprises a display screen and is electrically connected to a central control unit and a power supply unit.

[0029] 11. The device according to item 1, wherein the number of the light source components is 7, preferably LED light sources.

[0030] 12. The device according to item 1, wherein the number of through holes in the light guide base is 14. Except for the two through holes at the head and the tail, the remaining 12 through holes are all light collection points.

[0031] 13. The device according to item 1, wherein the number of the sensors is 6.

[0032] 14. The device according to items 1 and 2, wherein the sensors and the light source components are arranged in a "pin" shape, that is, each light source component can irradiate two adjacent sensors.

[0033] The beneficial effects of the present application are as follows:

[0034] The immunochromatographic analysis interpretation device provided by the present application adopts photoelectric sensors, which can improve the sensitivity of the device to low values and achieve high recognition ability for low values. At the same time, the light sources and sensors of the device are small in quantity and are all arranged on a printed circuit board, with low cost, small assembly error, and convenient for users to use in any scenario. In terms of design, every two sensors share one light source to avoid signal errors caused by light source differences. In terms of operation, after the test strip is inserted, by continuously scanning the test strip, it can be judged whether sampling has been performed by detecting the change in the light intensity of the detection area, so as to automatically perform detection without manual operation. At the same time, due to continuous scanning of the detection area, according to the change trends of C / T and the background, it can be judged whether the reaction has reached the end point. Description of the Drawings

[0035] The drawings are used to better understand the present application and do not constitute an improper limitation to the present application. Among them:

[0036] Figure 1 is an exploded view of the immunochromatographic analyzer interpretation device provided by the present application;

[0037] Figure 2 is a combined schematic diagram of the main control board and the light guide base of the immunochromatographic analyzer interpretation device provided by the present application;

[0038] Figure 3 is a schematic diagram of the test strip control mechanism of the immunochromatographic analyzer interpretation device provided by the present application;

[0039] Figure 4 is a working flow chart of the immunochromatographic analysis interpretation device provided by the present application;

[0040] Figure 5 is a partial cross-sectional schematic diagram of the immunochromatographic analysis interpretation device provided by the present application;

[0041] Figure 6 is a partial cross-sectional schematic diagram of the immunochromatographic analysis interpretation device provided by the present application.

[0042] Description of the Reference Numerals:

[0043] 10-main control board, 101-power supply unit, 102-display unit, 103-light guide base, 104-light source board, 105-light source base, 106-sensor, 107-light spot area, 108-central control system, 109-reset switch, 201-external button, 202-internal lever, 203-clamping member, 204-spring, 205-moving member, 206-spring, 1061-first sensor, 1062-second sensor, 1063-third sensor, 1064-fourth sensor, 1065-fifth sensor, 1066-sixth sensor, 1101-first light source assembly 1102-second light source assembly, 1103-third light source assembly, 1104-fourth light source assembly, 1105-fifth light source assembly, 1106-sixth light source assembly, 1107-seventh light source assembly. DETAILED DESCRIPTION

[0044] The specific embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the specific embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0045] It should be noted that certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that technicians may use different nouns to refer to the same component. This specification and claims do not use the difference in nouns as a way to distinguish components, but use the difference in the functions of the components as the criterion for distinction. As mentioned throughout the specification and claims, "including" or "comprising" is an open term, so it should be interpreted as "including but not limited to". The subsequent description of the specification is a preferred embodiment of the implementation of the present application, but the description is based on the general principles of the specification and is not used to limit the scope of the present application. The scope of protection of the present application shall be determined by the attached claims.

[0046] To facilitate the understanding of the specific scheme of the present application, further explanation will be given below with reference to several specific embodiments with reference to the accompanying drawings, and each drawing does not constitute a limitation to the present application.

[0047] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0048] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0049] In the description of this application, the “vertical direction” is defined as Figure 1 In a specific embodiment of the present application, an immunochromatographic analyzer reading device includes a housing, a main control board 10 , a sensor 106 , a display unit 102 , an optical unit, and a power supply unit 101 .

[0050] In a specific implementation of the present application, the size of the housing is not specifically limited, and must at least be able to accommodate the main control board 10 , the sensor 106 , the display unit 102 , the optical unit, and the power supply unit 101 .

[0051] In a specific embodiment of the present application, the material of the shell is not specifically limited, and any material considered suitable for the device shell by those skilled in the art can be used, such as acrylonitrile-butadiene-styrene copolymer (ABS), polycarbonate, polyoxymethylene, polytetrafluoroethylene, polypropylene, polyvinyl chloride, polyphenylene sulfide, nylon, silicone, aluminum alloy, carbon steel, stainless steel, copper, etc.

[0052] In a specific implementation of the present application, the main control board 10 is an irregular thin plate.

[0053] In a specific implementation of the present application, the sensor 106 is a photoelectric sensor, such as a phototube, a photoresistor, a photodiode, a phototransistor, a photosensitive diode, etc.

[0054] In a specific implementation of the present application, the display unit 102 is a small display screen, and its size can be adaptively adjusted based on the size of the main control board 10 .

[0055] In a specific implementation of the present application, the optical unit is a combination of a light guide base 103 , a light source plate 104 and a light source base 105 .

[0056] In a specific implementation of the present application, the light source base 105 is preferably rectangular.

[0057] In a specific implementation of the present application, the light source board 104 can be adaptively adjusted according to the shape of the light source base 105 to ensure the combination and fixation of the light source board 104 and the light source base 105 .

[0058] In a specific embodiment of the present application, there is a hollow area on the surface of the light guide base 103, which can accommodate the assembly of the light source board 104 and the light source base 105, and is combined and fixed by means of interlocking, thread fitting, magnetic attraction, etc.

[0059] In a specific implementation of the present application, the light source board 104 is used to carry a light source assembly.

[0060] In a specific implementation of the present application, the light source assembly is a combination of several light sources, and the light source is preferably an LED lamp.

[0061] In a specific implementation of the present application, the power supply unit 101 is a small power supply component, such as a power supply chip MAX1632, MAX1635, MAX1631, MAX1634, MAX1904, MAX1632, etc.

[0062] In a specific embodiment of the present application, the immunochromatographic analyzer reading device is further provided with a test strip control mechanism for controlling the entry, exit and fixation of the test strip.

[0063] In a specific implementation of the present application, the test strip control mechanism includes an external button 201 , an internal lever 202 , a clamping member 203 , a spring 204 , a moving member 205 and a spring 206 .

[0064] In a specific implementation of the present application, the moving member 205 is in the shape of an elongated strip, and may be a cuboid, a cylinder, a cone, a triangular pyramid, a triangular pyramid, or the like.

[0065] In a specific implementation of the present application, a slot is provided at the lower portion of the housing to accommodate the movement of the moving member in and out 205 .

[0066] In a specific implementation of the present application, the middle portion of the clamping member 203 is fixed to the lower portion of the shell, one end is hook-shaped, and the other side is fixed to the spring 204 and abuts against the outer wall of the lower shell slot.

[0067] In a specific embodiment of the present application, the internal lever 202 is in the shape of an elongated strip, one end of which is against the non-hook-shaped end of the clamp 203, and an external button 201 is provided on the outer side of the middle part of the internal lever 202, and the external button 201 and the internal lever 202 are both fixed to the lower part of the shell.

[0068] Example

[0069] like Figure 1 and Figure 2As shown in the figure, in a specific embodiment of the present application, an immunochromatographic analyzer reading device includes a housing, a main control board 10, a sensor 106, a display unit 102, a central control unit, a power supply unit 101, a light guide base 103, a light source board 104, a light source base 105, and a test strip control device 20; the housing is divided into an upper housing and a lower housing. The main control board 10 includes a display area and a collection area. The display area is a rectangular area with a larger area of ​​the main control board 10. A display unit 102 is arranged in the display area on the upper surface of the main control board 10. The display unit 102 is composed of a display screen. The display unit 102 can display the instrument, product information and test results on the screen. The display area on the lower surface of the main control board 10 is provided with a power supply unit 101, and the power supply unit 101 provides stable power for the operation of the equipment. The other areas on the main control board 10 except the display area are the collection area. At the end of the collection area, sensors 106 are arranged in sequence at fixed intervals along the vertical direction of the main control board 10. The sensors 106 are photoelectric sensors. The light guide base 103 is made of light-proof plastic and is used to carry the light source board 104 and the light source base 105. The light guide base 103 is a rectangular shell, and a large rectangular hollow area and a grating are arranged on the plane of the rectangular shell. The long side and the wide side of the rectangular hollow area are respectively arranged parallel to the long side and the wide side of the light guide base 103. The through holes are arranged in sequence at a fixed interval along the vertical direction of the plane where they are located, and are closely arranged with the rectangular hollow area. The lower surface of the light guide base 103 is provided with a rectangular empty groove along the vertical center direction of the plane, and the width of the rectangular empty groove allows the sensor 106 to pass through. The upper surface of the light source board 104 is provided with a plurality of light source components at fixed intervals in sequence along the vertical direction of the plane. The light source component is a light source structure composed of multiple LEDs to provide light for the test strips. A circular through hole is provided at each of the four corners of the light source board 104, and a rectangular protrusion is provided on the lower surface of the light source board 104. The light source base 105 is a rectangular shell, and through holes are arranged in sequence at fixed intervals along the vertical direction of the plane on the upper surface of the light source base 105. A cylindrical protrusion is arranged at each of the four corners of the light source base 105, and the protrusion can pass through the circular through hole of the light source board 104 so that the light source base 105 is combined with the light source board 104. The size of the light source base 105 is consistent with the size of the rectangular hollow area of ​​the light guide base 103; the combination of the light source base 105 and the light source board 104 can be snapped into the rectangular hollow area of ​​the light guide base 103, and the rectangular protrusion of the light source board 104 can be snap-fitted and fixed with the rectangular vacancy in the rectangular hollow area to form an optical unit, and the light guide base 103 can also be snapped into the main control board 10.The central control unit 108 is arranged in the middle of the main control board 10. The central control unit 108 is a microcomputer system, including a microprocessor, a system program memory, a user memory, a timer, a counter, etc. The system program is used to perform signal processing and other tasks. The timer and the counter can provide accurate trigger conditions for the execution of the program, and support the program to perform tasks such as detection, timing, communication, and display. A reset switch 109 is also arranged between the central control unit 108 and the sensor 106 to control the closing and disconnection of the power supply in the device.

[0070] like Figure 3 As shown in the figure, in a specific embodiment of the present application, the test strip control mechanism includes an external button 201, an internal lever 202, a clamping member 203, a spring 204, a moving member 205 and a spring 206. A rectangular area with an opening on one side surrounded by plastic is provided in the center of the lower shell. The end of the moving member 205 abuts against the spring 206 and the two are fixed in the rectangular area of ​​the lower shell. The end of the moving member 205 that does not contact the spring is consistent with the direction of the opening of the rectangular area. The clamping member 203 is a lever style, fixed in the middle, one side is hook-shaped, and the other side is fixed to the spring 204 and abuts against the outer wall of the rectangular area. There are two clamping members 203, which are respectively fixed on both sides of the rectangular area where the moving member 205 is located. The external button 201 and the internal lever 202 of the test strip control mechanism are respectively arranged and fixed on both sides of the clamping member 203. The outer wall of the shell where the external button 201 is located is hollowed out, and the external button can be directly touched from the outside of the shell during operation. On the inner wall of the bottom surface of the lower shell, a sliding track is provided from the end of the moving part 205 to the end of the lower shell in the same direction, and the width of the sliding track can accommodate a test strip of conventional size. The main control board 10 is placed in the lower layer of the test strip control mechanism after being combined with the optical unit, and the projection area of ​​the acquisition area of ​​the main control board 10 coincides with the sliding track. A rectangular hollow is provided on the shell surface directly above the display unit 102 to avoid affecting the normal observation of the information on the screen of the display unit 102. The upper and lower shells are snapped together to form a complete shell and accommodate all the above components therein, forming a complete immunochromatographic analyzer reading device.

[0071] like Figure 4 As shown in the figure, in a specific embodiment of the present application, the working principle of an immunochromatographic analyzer reading device is as follows:

[0072] After inserting the test strip to be tested from the entrance, the moving part 205 of the test strip control mechanism moves backward with the test strip after being stressed, and the clamping part 203 positions and clamps the test strip. At this time, the spring 206 is in a compressed state. At the same time, the test strip triggers the reset switch 109, enabling the power supply unit 101 to provide stable power for the operation of the device. The central control unit 108 starts, the display unit 102 is lit, and the power-on self-check program is performed simultaneously. After completion, the screen will flash the "water droplet" symbol to prompt the user to add the sample. At this time, the central control unit 108 makes the light source components on the light source board 104 emit light. When the chromatographic reaction is sensed, it enters the detection mode. At this time, the "clock" symbol flashes on the screen to indicate that the reaction has started for the user. The timer of the central control system 108 starts, and the timing time is the preset time in the program. During this period, the sensor will continue to work to judge the reaction degree of the test strip. When the reaction time is reached, the system arranges the data collected by the sensor into a multi-dimensional array, calculates the data through factors such as time, intensity, and physical position, and finally obtains the concentration of the analyte to be measured and displays it on the display unit 102. The user can view the result through the display unit 102 and store the test result in the central control unit 108. When there is no operation for a period of time, the system will turn off the screen and enter the power-saving mode. When the relevant information has been observed, manually press the external button 201 of the test strip control mechanism. The external button 201 is compressed by the force, driving the internal lever 202 to squeeze the spring 204 against the clamping part 203. The spring 204 deforms under the force, causing the clamping part 203 to open outward. The hook part of the clamping part 203 disengages from the test strip, and the moving part 205 ejects forward under the action of the spring 206 at its tail, and at the same time ejects the test strip in front of it. At this time, the reset switch 109 is in the off state, and the power supply unit 101 is turned off.

[0073] In a specific embodiment of the present application, in an immunochromatographic analyzer interpretation device, the working mode of the light source is as follows:

[0074] As Figure 5 And Figure 6 Shown in the figure, there are a total of the first to seventh light source components 1101 to 1107 and the first to sixth sensors 1061 to 1066 arranged in a "pin" shape, that is, each light source component can irradiate two adjacent sensors. The light source irradiates the test strip through the grating grid of the light guide base 103, and part of the light forms a light spot area 107. As Figure 5As shown in the figure, the positional relationship between the second light source assembly 1102, the third light source assembly 1103 and the sensor 1062 is that each of the two adjacent light source assemblies (lighting points) can illuminate a sensor together. When the second light source assembly 1102 is lit, the second sensor 1062 and the third sensor 1063 respectively perform a signal acquisition to obtain the light irradiation intensity of the C / T line area of ​​the test strip; at this time, the third light source assembly 1103 is lit to perform a signal acquisition of the second sensor 1062 and the third sensor 1063. According to the test results of the test strip, the signal intensity of the C / T background will be different. Based on the background signal, the content of the object to be tested can be calculated by calculating the difference between the background and the C line and the T line respectively.

[0075] A technical solution and / or a combination of multiple technical solutions in the above embodiments of the present application has the following beneficial effects:

[0076] (1) The structure is compact, the light source and sensor are small and are all arranged on a printed circuit board, which has low cost and small assembly error.

[0077] (2) Every two sensors share a light source to avoid signal errors caused by light source differences.

[0078] (3) After the test strip is inserted, the test strip is continuously scanned, and the change in light intensity in the detection area can be used to determine whether the sample has been added, thereby automatically performing the test without the need for human operation. At the same time, due to the continuous scanning of the detection area, the change trend of C / T and background can be used to determine whether the reaction has reached the endpoint.

[0079] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0080] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. An immunochromatographic analyzer reading device, wherein: include: A housing is provided with: A main control board, the main control board comprising a display area and a collection area; A sensor, wherein the sensor is arranged in a collection area of ​​the main control board; A display unit, wherein the display unit is arranged in a display area of ​​the main control board, The display unit and the sensor are respectively located on two sides of the main control board; an optical unit, the optical unit covering the sensor and providing an optical signal to the sensor; A power supply unit is used to provide power to the optical unit and the display unit.

2. The device according to claim 1, wherein: The optical unit includes a light guide base, a light source plate and a light source base; The light guide base includes a hollow area and a grating, wherein the hollow area can accommodate the entry of the optical unit, and the grating can allow the light emitted by the light source assembly to irradiate the sensor through the grating, and the light guide base can be docked and fixed with the main control board; The light source board is used to carry the light source components; The light source base and the light guide base are assembled and fixed by clamping the light source plate.

3. The device according to claim 1, wherein: It also includes a test strip control mechanism, which includes an external button, an internal lever, a clamping member, a moving member and a spring. The moving member abuts against the lower part of the shell through the spring, and the clamping member is arranged on both sides of the moving member.

4. The device according to claim 3, wherein: One end of the internal lever abuts against the clamping member, and the other end is fixed to the lower part of the shell together with the external button.

5. The device according to claim 2, wherein: A plurality of light source components are arranged on one of the planes of the light source plate.

6. The device according to claim 2, wherein: The light source base is a shell capable of accommodating and fixing the light source board.

7. The device according to claim 2, wherein: The material of the light-guiding base is light-proof plastic.

8. The device according to claim 1, wherein: The central control unit is arranged on the main control board.

9. The device according to claim 1, wherein: The main control board is also provided with a reset switch.

10. The device according to claim 1, wherein: The display unit includes a display screen and is electrically connected to the central control unit and the power supply unit.

Images