Anti-interference cavity type mounting structure

Abstract

The utility model relates to the technical field of jaundice measurement, in particular to an anti-interference cavity type mounting structure. The anti-interference cavity type mounting structure comprises a probe shell with an accommodating cavity, a first circuit board, a second circuit board and a third circuit board, the first circuit board, the second circuit board and the third circuit board are sequentially connected along the length direction of the probe shell and divide the accommodating cavity into a first mounting cavity, a second mounting cavity and a third mounting cavity; and a first reflection light guide column, an emission light guide column and a second reflection light guide column are coaxially sleeved in the probe shell. According to the invention, the first circuit board, the second circuit board and the third circuit board divide the accommodating cavity into three independent mounting cavities which are respectively used for placing the first circuit board, the second circuit board and the third circuit board, so that the emission light guide column and the first reflection light guide column are ensured to be positioned in different cavities, physical isolation between a light path and each circuit board is realized, and the reliability of the light path is improved. And electromagnetic interference between different circuit boards is effectively blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of jaundice measurement, in particular to an anti-interference cavity type installation structure. Background Art

[0002] With the continuous advancement of medical testing technology, jaundice measurement, a key component of neonatal health assessment, is gaining increasing attention for its portability, accuracy, and cost-effectiveness. Currently, jaundice measurement probes mostly use xenon lamps as their light source. However, these lamps are limited by their high voltage requirements and complex boost circuit design, which not only increases the size and weight of the devices but also limits their continuous detection capabilities and integration. Furthermore, while fiber optic transmission offers flexibility in optical path design, its complex structural layout, uneven fiber distribution, and high production costs hinder the widespread adoption and application of jaundice measurement technology.

[0003] In the existing technology, in the optical path design of jaundice measurement devices, light guide column technology has gradually emerged and gradually replaced the traditional optical fiber bundle transmission method. However, the optical components of the existing jaundice test devices are usually installed in the same cavity, which increases the mutual influence between the circuit board and the optical components, and there is a possibility of light transmission. The integration of components and the compactness of installation are also low. In addition, the cavity design in the existing technology is unreasonable and does not have sufficient isolation performance, resulting in light or electromagnetic radiation still being able to penetrate between different cavities, affecting the independence of each component, resulting in increased electromagnetic interference between circuit boards, unstable performance of optical components, and reduced overall detection accuracy. Utility Model Content

[0004] The utility model aims to solve the technical problem in the prior art that the circuit board and optical elements of jaundice measurement cannot be effectively isolated, resulting in light transmission and electromagnetic radiation penetration, and provides an anti-interference cavity-type installation structure.

[0005] In view of the above technical problems, an embodiment of the present invention provides an anti-interference cavity-type installation structure, comprising a probe housing with an accommodating cavity, a first circuit board, a second circuit board, and a third circuit board, wherein the first circuit board, the second circuit board, and the third circuit board are sequentially connected along the length direction of the probe housing and divide the accommodating cavity into a first installation cavity, a second installation cavity, and a third installation cavity; the probe housing is also coaxially sleeved and a first reflective light guide column, an emitting light guide column, and a second reflective light guide column are sequentially arranged from the inside to the outside;

[0006] The receiving end of the second reflective light guide is arranged below the first circuit board and outside the first mounting cavity, the emitting end of the emitting light guide passes through the first circuit board and is located in the first mounting cavity, and the emitting end of the emitting light guide is arranged opposite to the second circuit board;

[0007] The receiving end of the first reflective light guide column passes through the first circuit board and the second circuit board is located in the second installation cavity, and the receiving end of the first reflective light guide column is arranged opposite to the third circuit board.

[0008] Optionally, it further includes a second reflective light guide column sleeved on the emitting light guide column, and the second reflective light guide column is arranged opposite to the first circuit board.

[0009] Optionally, it further comprises a light source assembly mounted on the second circuit board, and the emitting end of the emitting light guide column is arranged corresponding to the light source assembly;

[0010] It also includes a first sensing component disposed on the third circuit board, and the receiving end of the first reflective light guide column is disposed corresponding to the first sensing component;

[0011] It also includes a second sensor component arranged on the first circuit board, and the receiving end of the second reflective light guide column is arranged corresponding to the second sensor component.

[0012] Optionally, outer surfaces of the emitting light guiding column, the first reflecting light guiding column, and the second reflecting light guiding column are all provided with an electroplating layer.

[0013] Optionally, the probe housing further includes a first housing, a second housing, and a third housing connected in sequence, the first mounting cavity is arranged in the first housing, the second mounting cavity is arranged in the second housing, and the third mounting cavity is arranged in the third housing.

[0014] Optionally, a silicone sealing layer is provided at the connection between the first circuit board and the emitting light guide column, the connection between the second circuit board and the first reflecting light guide column, the periphery of the first circuit board, and the periphery of the second circuit board.

[0015] Optionally, a positioning plate is further included between the second reflective light guide column and the first circuit board, and the first circuit board is fixed to the first housing by pressing the positioning plate through bolts.

[0016] Optionally, the first circuit board, the second circuit board and the third circuit board are connected by welding through a plurality of groups of 5-pin pin headers.

[0017] Optionally, the second reflective light guide column further includes two bosses symmetrically arranged at the receiving end of the second reflective light guide column, and the positioning plate is provided with positioning holes adapted to the bosses.

[0018] Optionally, a light-blocking ring is further provided on the second shell, and the light-blocking ring is arranged around the emitting end of the emitting light guide column.

[0019] Optionally, the light source assembly includes a plurality of blue LEDs, a plurality of green LEDs, and a plurality of red LEDs arranged on the second circuit board.

[0020] Optionally, the first sensing component includes a first sensor disposed on the third circuit board, and the first sensor is disposed corresponding to the receiving end of the first reflective light guide column.

[0021] Optionally, the second sensing component includes a second sensor and a third sensor symmetrically arranged on the first circuit board, and the second sensor and the third sensor are arranged corresponding to the receiving end of the second reflective light guide column.

[0022] In the present invention, the first circuit board, the second circuit board, and the third circuit board divide the housing cavity into three independent mounting cavities, which are used to house the first circuit board, the second circuit board, and the third circuit board, respectively. This ensures that the emitting light guide column and the first reflective light guide column are located in different cavities, thereby achieving physical isolation between the optical path and each circuit board and effectively blocking electromagnetic interference between different circuit boards. Furthermore, the independent cavity structure effectively prevents potential interference of light leakage on the circuit board and components, and utilizes the physical barrier of the circuit board and the housing to reduce light penetration, thereby promoting efficient integration and isolation of the circuit board and optical components. This innovation not only reduces the risk of light signals being absorbed or scattered during transmission, but also greatly improves the stability and accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural schematic diagram of an anti-interference cavity-type installation structure according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the installation structure of a light source assembly with an anti-interference cavity-type installation structure according to one embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of the installation structure of the first circuit board, the second circuit board, and the third circuit board according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic structural diagram of a probe according to an embodiment of the present invention;

[0027] Figure 5 This is a structural schematic diagram of a jaundice detection device including a probe assembly according to an embodiment of the present invention.

[0028] 1-probe housing, 101-first housing, 102-second housing, 103-third housing, 2-first circuit board, 3-second circuit board, 4-third circuit board, 5-first mounting cavity, 6-second mounting cavity, 7-third mounting cavity, 8-emitting light guide column, 9-first reflecting light guide column, 10-second reflecting light guide column, 1001-boss, 11-light source assembly, 1101-blue light LED, 1102-green light LED, 1103-red light LED, 12-first sensor assembly, 13-second sensor assembly, 14-positioning plate, 1401-positioning hole, 15-light blocking ring, 16-pin header, 100-probe assembly, 200-mainboard, 300-power supply component, 400-body, 500-supporting components. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] In the description of the present invention, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0031] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0032] In one embodiment, if Figure 1-4As shown, an anti-interference cavity-type mounting structure includes a probe shell 1 with a accommodating cavity, a first circuit board 2, a second circuit board 3 and a third circuit board 4, the first circuit board 2, the second circuit board 3 and the third circuit board 4 are connected in sequence along the length direction of the probe shell 1 and divide the accommodating cavity into a first installation cavity 5, a second installation cavity 6 and a third installation cavity 7; the probe shell 1 is also coaxially sleeved and a first reflecting light guide column 9, an emitting light guide column 8 and a second reflecting light guide column 10 are arranged in sequence from the inside to the outside; the receiving end of the second reflecting light guide column 10 is arranged below the first circuit board 2 and outside the first installation cavity 5, the emitting end of the emitting light guide column 8 passes through the first circuit board 2 and is located in the first installation cavity 5, and the emitting end of the emitting light guide column 8 is arranged opposite to the second circuit board 3; the receiving end of the first reflecting light guide column 9 passes through the first circuit board 2 and the second circuit board 3 and is located in the second installation cavity 6, and the receiving end of the first reflecting light guide column 9 is arranged opposite to the third circuit board 4. Among them, the first circuit board 2, the second circuit board 3 and the third circuit board 4 are installed in sequence along the length direction of the probe housing 1 and divide the accommodating cavity into three independent installation cavities, namely the first installation cavity 5, the second installation cavity 6 and the third installation cavity 7. The receiving end of the first reflective light guide column 9 is located in the second installation cavity 6, and the emitting end of the emitting light guide column 8 passes through the first circuit board 2 and is located in the first installation cavity 5. The emitting light guide column 8 and the first reflective light guide column 9 are respectively installed in different installation cavities, thereby realizing physical isolation of the optical path and the circuit board.

[0033] In the present invention, the first circuit board 2, the second circuit board 3, and the third circuit board 4 divide the accommodating cavity into three independent installation cavities, which are used to respectively house the first circuit board 2, the second circuit board 3, and the third circuit board 4, while ensuring that the emitting light guide column 8 and the first reflective light guide column 9 are located in different cavities, thereby achieving physical isolation between the optical path and each circuit board, and effectively blocking electromagnetic interference between different circuit boards. In addition, the independent cavity structure effectively prevents potential interference of light leakage on the circuit board and components, and uses the physical barrier of the circuit board and the housing to reduce light penetration, thereby promoting efficient integration and isolation of the circuit board and optical components. This innovation not only reduces the risk of light signals being absorbed or scattered during transmission, but also greatly improves the stability and accuracy of detection.

[0034] In one embodiment, if Figure 1As shown, the anti-interference cavity-type mounting structure further includes a second reflective light guide 10 sleeved on the emitting light guide 8, and the second reflective light guide 10 is arranged opposite the first circuit board 2. It can be understood that the receiving end of the second reflective light guide 10 is located below the first circuit board 2, that is, outside the first mounting cavity 5. In this way, the receiving end of the second reflective light guide 10, the receiving end of the first reflective light guide 9, and the emitting end of the emitting light guide 8 are respectively located in different mounting cavities, achieving physical isolation of all optical paths and circuit boards.

[0035] In one embodiment, if Figure 1 As shown, the anti-interference cavity-type mounting structure further includes a light source assembly 11 mounted on the second circuit board 3, with the emitting end of the emitting light guide 8 corresponding to the light source assembly 11. It also includes a first sensor assembly 12 mounted on the third circuit board 4, with the receiving end of the first reflective light guide 9 corresponding to the first sensor assembly 12. The anti-interference cavity-type mounting structure further includes a second sensor assembly 13 mounted on the first circuit board 2, with the receiving end of the second reflective light guide 10 corresponding to the second sensor assembly 13. It can be understood that the emitting light guide 8 is responsible for transmitting light of a specific wavelength emitted by the light source assembly 11 to the skin surface, while the first and second reflective light guides 9 and 10 receive the light after it is reflected, scattered, and refracted by the subcutaneous tissue of the skin. The first and second sensor assemblies 12 and 13 convert the light into electrical signals. The electrical signals are used to measure the intensity and wavelength of the light reflected from the first and second reflective light guides 9 and 10 to assess changes in skin color. The presence of jaundice is determined based on changes in the spectrum reflected from the skin due to bilirubin deposition. The number of the second reflective light guide columns 10 can be set to multiple as needed. Multiple second reflective light guide columns 10 are sequentially mounted on the emitting light guide column 8 to offset the impact of skin melanin. The first reflective light guide column 9 is used to detect the jaundice value.

[0036] Furthermore, the first reflective light guide column 9, the emitting light guide column 8 and the second reflective light guide column 10 can all be made of optical plastics such as acrylic transparent materials PMMA, polycarbonate, epoxy resin, etc. by injection molding, so that the above three light guide columns have excellent light transmittance and stable physical properties, ensuring that the optical signal will not be significantly attenuated due to material absorption or scattering during transmission, thereby improving the precision and accuracy of jaundice detection.

[0037] In another embodiment, if Figure 1As shown, the cross-sectional diameter of emitting light guide 8 gradually decreases from the emitting end of emitting light guide 8 toward the emitting end of emitting light guide 8, forming a trumpet-shaped or cone-shaped light guide. The cross-sectional diameter of first reflective light guide 9 gradually increases from the emitting end of emitting light guide 9 toward the receiving end of first reflective light guide 9, forming a trumpet-shaped or cone-shaped light guide. The cross-sectional diameter of second reflective light guide 10 gradually increases from the emitting end of emitting light guide 10 toward the receiving end of second reflective light guide 10, forming a trumpet-shaped or cone-shaped light guide. In this way, first reflective light guide 9, emitting light guide 8, and second reflective light guide 10 are all configured in a trumpet-shaped or cone-shaped structure with one end smaller than the other. This not only meets the layout requirements of multi-layer optical paths (the layout requirements of sensors and LED light groups), but also reduces reflection and scattering losses during light transmission, allowing more light to be focused on the detection area. The trumpet-shaped or cone-shaped light guides can also, to a certain extent, reduce the interference of external ambient light on measurement results.

[0038] In one embodiment, if Figure 1 As shown, the inner diameter of the cross-section of the emitting end of the emitting light guide column 8 is 3.2 mm, and the outer diameter is 6.3 mm to 6.5 mm; the inner diameter of the cross-section of the emitting end of the emitting light guide column 8 is 4.2 mm, and the outer diameter is 9 mm; the diameter of the cross-section of the emitting end of the first reflecting light guide column 9 is 2.9 mm to 3.2 mm; the diameter of the cross-section of the receiving end of the first reflecting light guide column 9 is 4.1 mm; the inner diameter of the cross-section of the emitting end of the second reflecting light guide column 10 is 7.5 mm to 7.8 mm, and the outer diameter is 9.7 mm to 10 mm. It is understandable that the cross-sectional radius of the end of the emitting light guide column 8, the first reflecting light guide column 9 and the second reflecting light guide column 10 close to the skin of the person to be tested can be set according to the structural requirements, optical performance and application scenario requirements. The cross-sectional radius of the first reflecting light guide column 9, the emitting light guide column 8 and the second reflecting light guide column 10 increases successively; the inner diameter of the cross section of the output end of the emitting light guide column 8 is not greater than 3.2 mm, and the outer diameter is not greater than 6.5 mm. The reason why the cross-sectional radius of the output end of the emitting light guide column 8 should not be too large is mainly to maintain the light intensity and signal quality of the optical path collection surface (close to the skin surface). When the cross-sectional radius is too large, the distance between the optical path and the corresponding receiving optical path is too long, which will lead to increased attenuation of light under the skin, making the signal collected by the distal optical path weaker. The appropriate cross-sectional radius can reduce the diffusion and attenuation of light when penetrating the skin, collect the reflected light signal more concentratedly, reduce the interference of ambient light on the detection signal, and improve the signal-to-noise ratio, thereby ensuring the accuracy and reliability of the detection results.

[0039] Furthermore, if Figure 1As shown, in the direction from the emitting end of the emitting light guide column 8 toward the emitting end of the emitting light guide column 8, the cross-sectional diameter of the emitting light guide column 8 gradually decreases; in the direction from the emitting end of the first reflecting light guide column 9 toward the receiving end of the first reflecting light guide column 9, the cross-sectional diameter of the first reflecting light guide column 9 gradually increases; in the direction from the emitting end of the second reflecting light guide column 10 toward the receiving end of the second reflecting light guide column 10, the cross-sectional diameter of the second reflecting light guide column 10 gradually increases. Among them, the first reflective light guide column 9, the emitting light guide column 8 and the second reflective light guide column 10 are coaxially sleeved from the inside to the outside in sequence, ensuring the precise alignment of the light source and the received light, and forming three independent channels for light propagation to avoid mutual interference between the light paths; the emitting light guide column 8 is responsible for transmitting the light of a specific wavelength emitted by the light source component 11 to the skin surface, the first reflective light guide column 9 and the second reflective light guide column 10 receive the light reflected, scattered and refracted by the subcutaneous tissue of the skin, and convert it into an electrical signal through the first sensor component 12 and the second sensor component 13. The intensity and wavelength of the light reflected back by the first reflective light guide column 9 and the second reflective light guide column 10 are measured by the electrical signal to evaluate the color change of the skin. Due to the deposition of bilirubin, the presence of jaundice is determined based on the change in the spectrum reflected by the skin. The number of second reflective light guide columns 10 can be set to multiple as needed. Multiple second reflective light guide columns 10 are sequentially sleeved on the emitting light guide column 8 to offset the influence of skin melanin. The first reflective light guide column 9 is used to detect the jaundice value.

[0040] In one embodiment, if Figure 1 As shown, the outer surfaces of the emitting light guide 8, the first reflective light guide 9, and the second reflective light guide 10 are all provided with an electroplating layer. As can be understood, the electroplating layer can isolate the first reflected light path, the emitting light path, and the second reflected light path, further preventing interference between the light paths. Each light path can propagate independently, ensuring the stability and accuracy of the optical signal. The electroplating layer also provides a protective layer for the surface of the light guide, preventing it from erosion and damage from the external environment.

[0041] In one embodiment, if Figure 1 As shown, a metal ring (not shown) is positioned between the emitting light guide 8 and the second reflecting light guide 10. It is understood that the metal ring can be a copper ring. The metal ring increases the distance to the second reflected light path (long light path). This increased distance corresponds to the thickness of the metal ring, which in turn changes the path length and attenuation characteristics of light during propagation, thereby affecting the intensity and quality of the ultimately received optical signal. By combining the signals of the first reflected light path (short light path) and the second reflected light path (long light path), and utilizing their different absorption characteristics for different components (such as bilirubin and melanin) when penetrating the skin, the influence of melanin on the measurement results can be effectively removed or reduced.

[0042] Furthermore, by adjusting the thickness of the metal ring, the length of the first reflected light path can be precisely controlled, thereby optimizing the accuracy of the entire optical measurement system.

[0043] In one embodiment, if Figure 1 As shown, the probe housing 1 also includes a first housing 101, a second housing 102, and a third housing 103 connected in sequence. The first mounting cavity 5 is provided in the first housing 101, the second mounting cavity 6 is provided in the second housing 102, and the third mounting cavity 7 is provided in the third housing 103. The two ends of the circuit board 4 are connected between the inner walls on opposite sides of the first housing 101; the two ends of the first circuit board 2 are connected between the inner walls on opposite sides of the second housing 102; and the two ends of the second circuit board 3 are connected between the inner walls on opposite sides of the third housing 103. It can be understood that the first housing 101 encloses the first mounting cavity 5, the second housing 102 encloses the second mounting cavity 6, and the third housing 103 encloses the third mounting cavity 7. The first housing 101, the second housing 102, and the third housing 103 constitute the probe housing 1, which can protect the various circuit boards and optical components. The split design of the probe housing 1 facilitates maintenance and replacement and also helps to clearly distinguish functions.

[0044] In one embodiment, if Figure 1 As shown, a silicone sealing layer is provided at the connection between the first circuit board 2 and the emitting light guide 8, the connection between the second circuit board 3 and the first reflective light guide 9, and the periphery of the first circuit board 2, the periphery of the third circuit board 4, and the periphery of the second circuit board 3. As can be understood, the silicone sealing layer effectively absorbs light, reducing or eliminating light leakage caused by assembly gaps. It not only effectively prevents light leakage through assembly gaps of structural components, but also improves sealing, shock absorption, aesthetics, and ease of maintenance.

[0045] In one embodiment, if Figure 1 and Figure 4 As shown, the anti-interference cavity-type mounting structure further includes a positioning plate 14 disposed between the second reflective light guide 10 and the first circuit board 2. The first circuit board 2 is fixed to the first housing via bolts, pressing against the positioning plate 14. As can be understood, the positioning plate 14 effectively blocks excess reflected light and, in conjunction with the first circuit board 2, further prevents such light from entering the cavity in which the first circuit board 2 is located, thereby reducing optical interference.

[0046] In one embodiment, if Figure 1 and Figure 4As shown, the second reflective light guide column 10 also includes two bosses 1001 symmetrically arranged at the receiving end of the second reflective light guide column 10, and the positioning plate 14 is provided with a positioning hole 1401 adapted to the boss 1001. The positioning hole 1401 adapted to the boss 1001 is provided on the positioning plate 14, so that the boss 1001 is accurately embedded in the positioning plate 14, avoiding optical path deviation caused by installation errors. The boss 1001 can also accurately guide the reflected light to the corresponding second sensor component 13. The two symmetrically arranged bosses 1001 help maintain the symmetry of the optical path, making the intensity of the optical signal received by the second sensor component 13 more balanced.

[0047] In one embodiment, the second sensing assembly 13 includes a second sensor (not shown) and a third sensor (not shown). To meet the installation requirements of the second and third sensors (whose layout is strictly limited by the external dimensions and circuit pad packaging) and simultaneously avoid the problem of increased probe thickness caused by placing the second and third sensors one above the other, the second and third sensors are arranged side by side. This effectively controls the probe thickness and keeps it within a relatively reasonable and aesthetically pleasing range. To accommodate this layout, the outer contour of the receiving end of the second reflective light guide 10 can be designed to be elliptical, which not only meets installation requirements but also optimizes the optical path to a certain extent and improves light utilization.

[0048] In another embodiment, the boss 1001 is positioned opposite the second or third sensor, with the center of the boss 1001 directly aligned with the center of the collection window of the second or third sensor. The cross-sectional area of ​​the boss 1001 is larger than the cross-sectional area of ​​the collection window (light receiving window) of the second or third sensor. Understandably, the relative placement of the boss 1001 and the sensor, as well as the differential design of their areas, allows reflected light to enter the collection window directly and efficiently. The larger cross-sectional area of ​​the boss 1001 captures more reflected light and directs it toward the collection window, thereby increasing the receiving area for the light signal and reducing light scattering and loss. This also improves the sensor's sensitivity to and ability to receive light signals.

[0049] In one embodiment, if Figure 3As shown, the first circuit board 2, the second circuit board 3 and the third circuit board 4 are connected by welding through several groups of 5-pin pin headers 16. It can be understood that the use of several groups of 5-pin pin headers 16 to weld and connect the third circuit board 4, the second circuit board 3 and the first circuit board 2 has multiple advantages. First, the presence of the solder joints firmly fixes the three circuit boards together, forming a stable whole, effectively resisting the influence of external factors such as vibration and impact on the stability of the circuit board connection, and preventing the occurrence of loosening or separation. Secondly, this welding connection method ensures the reliable transmission of electrical signals between the circuit boards. Each group of 5-pin pin headers 16 can be accurately connected to the corresponding pads, forming a low-impedance, high-stability electrical path, ensuring the integrity and accuracy of the signals between the circuit boards. Furthermore, the use of 5-pin pin headers 16 for circuit board connection also significantly simplifies the assembly process and improves production efficiency. The design of the 5-pin pin headers 16 makes the alignment between the circuit boards intuitive and easy to operate, reducing the complexity and human errors in the assembly process, while also shortening the assembly time and improving overall work efficiency.

[0050] In one embodiment, if Figure 4 As shown, a light-blocking ring 15 is further provided on the second housing 102, and the light-blocking ring 15 is arranged around the emitting end of the emitting light guide column 8. It can be understood that the light-blocking ring 15 can limit or block the light emitted by the emitting light guide column 8 from scattering in unintended directions, so that the light propagates in a set direction, thereby improving the utilization rate of the light and the overall performance of the device.

[0051] In one embodiment, if Figure 2 As shown, the light source assembly 11 includes a plurality of blue LEDs 1101, a plurality of green LEDs 1102, and a plurality of red LEDs 1103 arranged on the second circuit board 3. It can be understood that the second circuit board 3 is arranged relative to the emitting end of the emitting light guide column 8, that is, the plurality of blue LEDs 1101, the plurality of green LEDs 1102, and the plurality of red LEDs 1103 of the light source assembly 11 are all arranged relative to the emitting end of the emitting light guide column 8, so that the light emitted by the light source assembly 11 can directly illuminate the emitting end of the emitting light guide column 8, reducing the loss and scattering of light during the propagation process. The light emission direction of the light source assembly 11 is perpendicular to the emitting end of the emitting light guide column 8, which helps to reduce the angular deviation of the light at the time of incidence, improve the efficiency of the light entering the emitting light guide column 8, and promote the uniform distribution of light intensity at the output end.

[0052] In one embodiment, if Figure 1As shown, there is a certain distance between the emitting end of the emitting light guide column 8 and the lamp beads of each LED of the light source group, which enhances the uniformity of the red, green and blue light. If the red, green and blue lamp beads are too close, the intensity is good but the uniformity is not good; maintaining a certain distance can not only ensure the intensity of the emitted light, but also enhance the uniformity of the emitted light.

[0053] In one embodiment, if Figure 2 As shown, the number of blue LEDs 1101 and green LEDs 1102 is the same, and they are grouped in pairs to form a light source unit. All of the light source units are evenly arranged along the mounting holes, and the multiple red LEDs 1103 are spaced between two adjacent light source units. It can be understood that one blue LED 1101 and one green LED 1102 constitute a light source unit, and the multiple light source units are evenly arranged on the second circuit board 3 relative to the mounting holes, with a red LED 1103 arranged between adjacent light source units. In this way, the green LED 1102 and the blue LED 1101 are closely adjacent to each other and evenly distributed in the four directions of up, down, left and right on the second circuit board 3, and the red LED 1103 is distributed in the four directions of northeast, northwest, southwest and southeast on the second circuit board 3. Such an arrangement increases the mixing effect of light, making the light entering the emitting light guide column 8 more uniform in color, avoiding visual errors caused by uneven color distribution; at the same time, the uniformity of light is taken into account to ensure the uniform light effect, so that the light intensity of the emitting light guide column 8 on the emitting end cross section is uniform, reducing the difference in reflected light intensity signal caused by uneven light intensity; color balance is also taken into account. Red light has a higher saturation in visual perception. Through reasonable distribution, local overbrightness or overdarkness can be avoided, thereby improving the overall detection accuracy.

[0054] Furthermore, by alternately illuminating the 460nm blue LED 1101 and the 550nm green LED 1102, the bilirubin content in subcutaneous tissue is determined by measuring the optical intensity difference between the blue and green lights, based on the fact that hemoglobin has the same absorption peak at 460nm blue light and 550nm green light, and bilirubin has its strongest absorption peak at 460nm blue light. The 630nm red light is primarily used to help mitigate the impact of skin melanin on the measurement accuracy of the 460nm blue and 550nm green light, thereby improving bilirubin measurement accuracy. The red LED 1103 is illuminated when the blue LED 1101 and the green LED 1102 are off. Understandably, bilirubin has the strongest absorption peak of blue light at a wavelength of 460nm. When blue light is irradiated to the skin, most of the blue light will be absorbed by the bilirubin in the subcutaneous tissue. The degree of absorption is directly related to the bilirubin content. By measuring the change in the intensity of blue light before and after irradiation, the amount of blue light absorbed by bilirubin can be indirectly inferred, and then the bilirubin content can be evaluated.

[0055] Hemoglobin has similar absorption peaks at blue light with a wavelength of 460nm and green light with a wavelength of 550nm, but bilirubin's absorption of green light with a wavelength of 550nm is much lower than that of blue light. Therefore, green light can be used as a reference to help correct measurement errors caused by absorption by other substances such as hemoglobin.

[0056] Melanin in the skin has a certain absorption effect on visible light, especially in the shorter wavelength blue and green light regions. The absorption of red light with a wavelength of 630nm on melanin is relatively small. Therefore, lighting up the red light in the gap between blue and green light measurements can preheat the skin to a certain extent and reduce the impact of melanin on subsequent measurements. By precisely controlling the alternating lighting sequence and duration of the LEDs, it is possible to measure light of different wavelengths passing through the skin under almost identical conditions, thereby reducing the error introduced by time differences.

[0057] In one embodiment, if Figure 2 As shown, the number of blue LED 1101, green LED 1102, and red LED 1103 is at least four. It is understood that the number of blue LED 1101, green LED 1102, and red LED 1103 can be set as needed, and can be four. It is understood that even if one of the LEDs fails or its performance degrades, the other LEDs will continue to operate, ensuring the continuity and stability of the measurement. If only one of the blue LED 1101 and green LED 1102 is provided, if one of them fails, the accuracy of the detection may be significantly reduced, which may lead to extremely serious consequences.

[0058] In one embodiment, if Figure 1 As shown, the first sensing assembly 12 includes a first sensor (not shown) disposed on the third circuit board 4. The first sensor is positioned correspondingly to the receiving end of the first reflective light guide 9. As can be understood, the first sensor is positioned correspondingly to the receiving end of the first reflective light guide 9. Light emitted from the transmitting light guide 8, reflected by the skin, and received by the first reflective light guide 9 can be accurately received by the first sensor. This positional correspondence reduces light scattering and loss, improving the accuracy of signal reception. The first sensor can receive the reflected light signal in real time and convert it into an electrical signal. It is responsible for overall control and data processing, providing real-time feedback for the measurement system.

[0059] In one embodiment, if Figure 1As shown, the second sensing assembly 13 includes a second sensor (not shown) and a third sensor (not shown) symmetrically disposed on the first circuit board 2. The second and third sensors are disposed correspondingly to the receiving end of the second reflective light guide 10. It is understood that the second and third sensors are disposed correspondingly to the receiving end of the second reflective light guide 10. Light emitted from the emitting light guide 8, reflected by the skin, and received back by the second reflective light guide 10 can be accurately received by the second and third sensors. This positional correspondence also reduces light scattering and loss, improving the accuracy of signal reception. The second and third sensors can receive reflected light signals in real time and convert them into electrical signals, providing real-time feedback for the measurement system.

[0060] In one embodiment, if Figure 1 As shown, the first circuit board 2, the second circuit board 3, and the third circuit board 4 are sequentially arranged along the length of the emitting light guide 8. The emitting end of the emitting light guide 8 passes through the first circuit board 2 and is disposed opposite the second circuit board 3. A first preset distance is separated from the emitting end of the emitting light guide 8 and the second circuit board 3. The receiving end of the first reflective light guide 9 passes through the first circuit board 2 and the second circuit board 3 in sequence and is disposed opposite the third circuit board 4. A second preset distance is separated from the receiving end of the first reflective light guide 9 and the third circuit board 4. The first preset distance is less than the second preset distance. The receiving end of the second reflective light guide 10 is disposed opposite the first circuit board 2 and is separated from the receiving end of the second reflective light guide 10 and the first circuit board 2 by a third preset distance. The third preset distance is less than the second preset distance. It is understood that the settings of the first, second, and third preset distances can serve as a reference for the positioning and installation of the light guides to ensure consistent assembly between the three light guides and the three circuit boards. The second preset distance is greater than the third preset distance.

[0061] In another embodiment, when a plurality of second reflective light guides 3 are provided on the emitting light guide 1, that is, a plurality of reflective light guides are provided on the second reflective light guide 3, such as a third reflective light guide, a fourth reflective light guide, a fifth reflective light guide, etc., the number of the reflective light guides can be set as required; the reflective light guides with smaller outer diameters and diameters have corresponding preset distances. The third reflective light guide, the fourth reflective light guide, and the fifth reflective light guide are respectively provided with corresponding circuit boards, and the distances between them are respectively the fourth preset distance, the fifth preset distance, and the sixth preset distance, wherein the second preset distance > the third preset distance > the fourth preset distance > the fifth preset distance > the sixth preset distance.

[0062] In one embodiment, the first preset distance is 1.1 mm to 1.2 mm. It is understandable that the first preset distance can be set according to needs, specifically, according to the light source efficiency, uniformity, and assembly tolerance. The first preset distance can be 1.1 mm or 1.2 mm.

[0063] In one embodiment, the second preset distance is 1.8 mm to 1.9 mm. It is understandable that the second preset distance can be set according to needs, specifically, according to the optical signal receiving efficiency and signal stability, and the second preset distance can be 1.8 mm or 1.9 mm.

[0064] In one embodiment, the third preset distance is 0.9 mm to 1.0 mm. It is understandable that the third preset distance can be set according to needs, specifically, according to enhancing the weak light signal reception rate and improving the system sensitivity, the third preset distance can be 0.9 mm or 1.0 mm.

[0065] The present invention also provides a jaundice detection device, comprising the aforementioned probe assembly. The jaundice detection device comprises a body 400, a probe assembly 100, a mainboard 200, a power supply 300, and an auxiliary component 500. The probe assembly 100 includes the aforementioned probe assembly. The device integrates the body 400 as the main framework and the probe assembly 100 as the core component. It directly acts on the skin being tested, emitting and receiving light, and efficiently converting the optical signals into electrical signals using photoelectric sensors. These electrical signals can be further processed on the mainboard 200 to accurately analyze jaundice indicators, or they can be pre-processed on the probe and directly transmitted to the mainboard 200, ensuring efficient and accurate data processing. The mainboard 200 is responsible for integrating and analyzing these signals, generating intuitive test data that can be displayed on a display screen for the user to view. Furthermore, the device includes a built-in power supply 300, ensuring a continuous and stable energy supply for the entire device. To ensure measurement accuracy, the auxiliary component 500 includes a calibration device, facilitating regular calibration and maintenance of the device to ensure the reliability and accuracy of the test results.

[0066] The above are merely embodiments of the anti-interference cavity-type installation structure and jaundice detection device of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. An anti-interference cavity-type installation structure, characterized in that: The probe housing (1) comprises a probe housing (1) having a housing cavity, a first circuit board (2), a second circuit board (3) and a third circuit board (4), wherein the first circuit board (2), the second circuit board (3) and the third circuit board (4) are sequentially connected along the length direction of the probe housing (1) and divide the housing cavity into a first installation cavity (5), a second installation cavity (6) and a third installation cavity (7); the probe housing (1) is also coaxially sleeved and a first reflective light guide column (9), an emitting light guide column (8) and a second reflective light guide column (10) are sequentially arranged from the inside to the outside; The receiving end of the second reflective light guide column (10) is arranged below the first circuit board (2) and outside the first mounting cavity (5); the emitting end of the emitting light guide column (8) passes through the first circuit board (2) and is located in the first mounting cavity (5); and the emitting end of the emitting light guide column (8) is arranged opposite to the second circuit board (3); The receiving end of the first reflective light guide column (9) passes through the first circuit board (2) and the second circuit board (3) is located in the second mounting cavity (6), and the receiving end of the first reflective light guide column (9) is arranged opposite to the third circuit board (4).

2. The anti-interference cavity-type installation structure according to claim 1, characterized in that: It also includes a second reflective light guide column (10) sleeved on the emitting light guide column (8), and the second reflective light guide column (10) is arranged opposite to the first circuit board (2).

3. The anti-interference cavity-type installation structure according to claim 2, characterized in that: It also includes a light source assembly (11) mounted on the second circuit board (3), and the emitting end of the emitting light guide column (8) is arranged corresponding to the light source assembly (11); It also includes a first sensing component (12) arranged on the third circuit board (4), and the receiving end of the first reflective light guide column (9) is arranged corresponding to the first sensing component (12); It also includes a second sensing component (13) arranged on the first circuit board (2), and the receiving end of the second reflective light guide column (10) is arranged corresponding to the second sensing component (13).

4. The anti-interference cavity-type installation structure according to claim 2, characterized in that: The outer surfaces of the emitting light guide column (8), the first reflecting light guide column (9) and the second reflecting light guide column (10) are all provided with an electroplating layer.

5. The anti-interference cavity-type installation structure according to claim 1, characterized in that: The probe housing (1) further comprises a first housing (101), a second housing (102) and a third housing (103) connected in sequence, wherein the first mounting cavity (5) is arranged in the first housing (101), the second mounting cavity (6) is arranged in the second housing (102), and the third mounting cavity (7) is arranged in the third housing (103).

6. The anti-interference cavity-type installation structure according to claim 2, characterized in that: A silicone sealing layer is provided at the connection between the first circuit board (2) and the emitting light guide column (8), the connection between the second circuit board (3) and the first reflecting light guide column (9), the periphery of the first circuit board (2), and the periphery of the second circuit board (3).

7. The anti-interference cavity-type installation structure according to claim 5, characterized in that: It also includes a positioning plate (14) arranged between the second reflective light guide column (10) and the first circuit board (2), and the first circuit board (2) is fixedly mounted on the first housing (101) by pressing the positioning plate (14) via bolts.

8. The anti-interference cavity-type installation structure according to claim 1, characterized in that: The first circuit board (2), the second circuit board (3) and the third circuit board (4) are connected by welding via a plurality of groups of 5-pin headers (16).

9. The anti-interference cavity-type installation structure according to claim 7, characterized in that: The second reflective light guide column (10) further comprises two bosses (1001) symmetrically arranged at the receiving end of the second reflective light guide column (10), and the positioning plate (14) is provided with positioning holes (1401) adapted to the bosses (1001).

10. The anti-interference cavity-type installation structure according to claim 5, characterized in that: A light-blocking ring (15) is also provided on the second housing (102), and the light-blocking ring (15) is arranged around the emission end of the emission light guide column (8).

11. The anti-interference cavity-type installation structure according to claim 3, characterized in that: The light source assembly (11) comprises a plurality of blue LEDs (1101), a plurality of green LEDs (1102), and a plurality of red LEDs (1103) arranged on the second circuit board (3).

12. The anti-interference cavity-type installation structure according to claim 3, characterized in that: The first sensing component (12) comprises a first sensor arranged on the third circuit board (4), and the first sensor is arranged corresponding to the receiving end of the first reflective light guide column (9).

13. The anti-interference cavity-type installation structure according to claim 3, characterized in that: The second sensing component (13) comprises a second sensor and a third sensor symmetrically arranged on the first circuit board (2), and the second sensor and the third sensor are arranged corresponding to the receiving end of the second reflective light guide column (10).

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