Chinese color code sensor

Abstract

The Chinese color code sensor comprises a shell, a plurality of clamping grooves are formed in the shell, and the clamping grooves are used for installing an optical transmission module, a display screen module, a first PCBA board, a second PCBA board, a third PCBA board, a fourth PCBA board and a fifth PCBA board. In conclusion, the Chinese color code sensor realizes parallel design of a transmitting light path and a receiving light path by optimizing the optical structure and the layout of the circuit module, and effectively improves the conduction efficiency and the reflection precision of the light path by utilizing 45-degree inclined arrangement of the total reflection mirror and the half reflection mirror; by arranging the light shield structure, direct interference of the light emitting module on the receiving module is avoided, and the accuracy of color recognition is improved; shielding copper foils are arranged on the upper and lower covers, so that the anti-electromagnetic interference capability is remarkably improved; and in cooperation with the design of the light guide column and the display window, the user interaction experience is enhanced, and the device has the beneficial effects of compact structure, high recognition precision, strong anti-interference performance, wide application scene and the like on the whole.

Description

Technical Field

[0001] This utility model belongs to the field of color mark sensor technology, specifically relating to a Chinese color mark sensor. Background Technology

[0002] With the development of industrial automation and intelligent manufacturing, color mark sensors are increasingly widely used in packaging, printing, textiles and other fields. In particular, in scenarios such as fine color recognition and contrast recognition, higher requirements are placed on the sensor's response speed, recognition accuracy and anti-interference ability.

[0003] Existing color mark sensors mostly use a combination of red, green, and blue LEDs. They calculate color information by repeatedly illuminating light sources of different colors and collecting reflection data for each. However, due to the complex optical path structure and limited spatial layout, problems such as high optical path loss, large interference, and low alignment accuracy often occur, thus affecting the accuracy and stability of color recognition.

[0004] Furthermore, due to the close proximity of the light source and the photosensitive chip within the sensor's internal structure, direct light is highly susceptible to interfering with reflected light signals, leading to measurement errors. Additionally, some products lack effective electromagnetic shielding, making them vulnerable to external interference and affecting system stability. Therefore, there is an urgent need for a Chinese color mark sensor with a compact structure, precise optical path, adequate signal isolation, and strong anti-interference capabilities to improve the system's color detection performance and reliability. Utility Model Content

[0005] The present invention aims to provide a Chinese color mark sensor to solve the technical problems of low color detection performance and poor stability of existing color mark sensors.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A Chinese color mark sensor includes a housing with several slots inside the housing for mounting an optical transmission module, a display module, a first PCBA board, a second PCBA board, a third PCBA board, a fourth PCBA board, and a fifth PCBA board.

[0008] The optical transmission module includes a transmitting lens, a receiving lens, a total reflection mirror, and a half reflection mirror, wherein the total reflection mirror and the half reflection mirror are arranged in parallel and side by side, and the receiving lens is located between the total reflection mirror and the transmitting lens;

[0009] The second PCBA board integrates a three-color LED with the light-emitting surface of the three-color LED facing the emitting lens. The third PCBA board integrates an RGB sensor chip with the photosensitive surface of the RGB sensor chip facing the semi-reflective mirror. The transceiver lens is located between the semi-reflective mirror and the RGB sensor chip. The housing is also provided with a light-emitting lens corresponding to the semi-reflective mirror.

[0010] The three-primary-color LED, emitting lens, transceiver lens, total reflection mirror, semi-reflective mirror, and light-emitting lens sequentially form the emitting light path, and the light-emitting lens, semi-reflective mirror, transceiver lens, and RGB Sensor chip sequentially form the receiving light path. The emitting light path and the receiving light path are parallel to each other. The total reflection mirror and semi-reflective mirror are arranged at an angle of 45° relative to the emitting light path.

[0011] The housing is provided with a display window, the display module is corresponding to the display window, the second PCBA board and the third PCBA board are both connected to the first PCBA board, and the first PCBA board, the fifth PCBA board and the display module are connected to the fourth PCBA board.

[0012] The housing is also connected to power cords, which are connected to the display module, the first PCBA board, the second PCBA board, the third PCBA board, the fourth PCBA board, and the fifth PCBA board, respectively.

[0013] Furthermore, a display film is also provided on the display window.

[0014] Furthermore, the third PCBA board is disposed inside a shielding cover, and the shielding cover is provided with an exposure hole for exposing the RGB Sensor chip.

[0015] Furthermore, the housing includes an outer shell, with an upper cover and a lower cover provided on the top and bottom of the outer shell.

[0016] Furthermore, the bottom surface of the upper cover and the top surface of the lower cover are both provided with shielding copper foil, and all components are located between two shielding copper foils.

[0017] Furthermore, the housing is provided with a light guide column located on one side of the display window.

[0018] Compared with existing technologies, the beneficial effects of this utility model are as follows: The Chinese color mark sensor of this utility model achieves a parallel design of the emitting and receiving optical paths through optimized optical structure and circuit module layout. The 45° tilt of the total reflection mirror and the semi-reflective mirror effectively improves the transmission efficiency and reflection accuracy of the optical path. By setting a light-shielding structure, direct interference from the emitting module to the receiving module is avoided, improving the accuracy of color recognition. The use of multiple PCBA boards arranged in sections and precisely positioned through slots enhances system integration and module stability. The use of shielding copper foil on the upper and lower covers significantly improves anti-electromagnetic interference capabilities. Combined with the design of the light guide column and display window, it enhances the user interaction experience. Overall, it has the beneficial effects of compact structure, high recognition accuracy, strong anti-interference ability, and wide applicability. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is an isometric view of the Chinese color mark sensor of this utility model;

[0021] Figure 2 This is an exploded view of the Chinese color mark sensor of this utility model;

[0022] Figure 3 This is a schematic diagram of the optical transmission module.

[0023] Figure 4 This is a schematic diagram showing the positions of each component on the first PCBA board. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] The present invention will be further described in detail below with reference to the embodiments.

[0026] like Figure 1-4As shown, this embodiment provides a Chinese color mark sensor, including a housing 1. The housing has several slots inside for mounting functional modules, including an optical transmission module, a display module 3, a first PCBA board 4, a second PCBA board 5, a third PCBA board 6, a fourth PCBA board 7, and a fifth PCBA board 8. The housing also includes auxiliary structures such as a display window 9, a power cord 10, and a light guide post 11.

[0027] The optical transmission module includes a transmitting lens 12, a transmitting / receiving lens 13, a total reflection mirror 14, and a semi-reflecting mirror 15. The total reflection mirror 14 and the semi-reflecting mirror 15 are arranged parallel to each other and are both mounted in the slot at a 45° angle relative to the optical path. The transmitting / receiving lens 13 is located between the transmitting lens 12 and the total reflection mirror 14, and serves to converge and focus the light. A light-emitting lens 17 is provided at the front of the housing 1, corresponding to the position of the semi-reflecting mirror 15, for focusing the emitted light and receiving the reflected light.

[0028] The second PCBA board 5 integrates three-color LEDs, with the emitting surface perpendicular to the second PCBA board 5 and facing the emitting lens 12. The third PCBA board 6 has an RGB sensor chip, which is fixed by pin soldering, with its photosensitive surface facing the reflection direction of the semi-reflective mirror 15. The transceiver lens 13 is located between the semi-reflective mirror 15 and the RGB sensor chip, and is used to converge the reflected light.

[0029] The three primary color LEDs, emitting lens 12, transceiver lens 13, total reflection mirror 14, half reflection mirror 15 and light-emitting lens 17 sequentially form the emitting light path, and the light-emitting lens 17, half reflection mirror 15, transceiver lens 13 and RGB Sensor chip sequentially form the receiving light path, and the two light paths are parallel to each other.

[0030] The working principle of the transmitting optical path is as follows: the three primary color LED chips 18 are lit sequentially or in combination, and the emitted light is collimated by the transmitting lens 12, passes through the transceiver lens 13 and then illuminates the total reflection mirror 14, and is reflected at a 45° angle to the surface of the object being measured; the light reflected by the object being measured passes sequentially along the receiving optical path through the output lens 17, the half reflection mirror 15 and the transceiver lens 13, and is finally received by the RGBSensor chip for signal conversion and analysis.

[0031] To prevent direct LED light from interfering with the received signal, the RGB Sensor chip is housed inside the light shield 22, and the light shield 22 has a window for exposing the photosensitive surface; the third PCBA board 6 is fixed in the slot inside the housing 1 with screws to ensure stable installation and accurate positioning.

[0032] The display module 3 is located on the upper part of the housing 1 and corresponds to the display window 9, displaying the detection results in real time. The display window 9 is covered with a display film 25, which has the functions of dustproofing, scratch resistance, and enhancing display clarity.

[0033] The first PCBA board 4 is the main control board. The second PCBA board 5 and the third PCBA board 6 are electrically connected to the first PCBA board 4, respectively, and are responsible for driving the light source and receiving signal processing. The fourth PCBA board 7 serves as the central control interface platform, and communicates or supplies power to the display module 3, the first PCBA board 4, and the fifth PCBA board 8 to form a complete circuit system.

[0034] To enhance anti-interference capabilities, shielding copper foil 28 is provided on the inner surfaces of the upper cover 26 and the lower cover 27, forming a double-layer electromagnetic shielding structure. All electronic components and optical components are located between the two shielding copper foils 28, significantly reducing the impact of external electromagnetic radiation on sensor performance.

[0035] In addition, a light guide column 11 is provided on the side of the housing 1 to guide the working status indicator light and enhance the user's visual operation experience.

[0036] The power cord 10 is led out from the rear of the housing 1 and connected to the display module 3 and each PCBA board to provide power to the overall sensor system.

[0037] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A Chinese color mark sensor, characterized in that: The device includes a housing, and the housing has several slots inside, which are used to install an optical transmission module, a display module, a first PCBA board, a second PCBA board, a third PCBA board, a fourth PCBA board, and a fifth PCBA board. The optical transmission module includes a transmitting lens, a receiving lens, a total reflection mirror, and a half reflection mirror, wherein the total reflection mirror and the half reflection mirror are arranged in parallel and side by side, and the receiving lens is located between the total reflection mirror and the transmitting lens; The second PCBA board integrates a three-color LED with the light-emitting surface of the three-color LED facing the emitting lens. The third PCBA board integrates an RGB sensor chip with the photosensitive surface of the RGB sensor chip facing the semi-reflective mirror. The transceiver lens is located between the semi-reflective mirror and the RGB sensor chip. The housing is also provided with a light-emitting lens corresponding to the semi-reflective mirror. The three-primary-color LED, emitting lens, transceiver lens, total reflection mirror, semi-reflective mirror, and light-emitting lens sequentially form the emitting light path, and the light-emitting lens, semi-reflective mirror, transceiver lens, and RGB Sensor chip sequentially form the receiving light path. The emitting light path and the receiving light path are parallel to each other. The total reflection mirror and semi-reflective mirror are arranged at an angle of 45° relative to the emitting light path. The housing is provided with a display window, the display module is corresponding to the display window, the second PCBA board and the third PCBA board are both connected to the first PCBA board, and the first PCBA board, the fifth PCBA board and the display module are connected to the fourth PCBA board. The housing is also connected to power cords, which are connected to the display module, the first PCBA board, the second PCBA board, the third PCBA board, the fourth PCBA board, and the fifth PCBA board, respectively.

2. The Chinese color mark sensor according to claim 1, characterized in that: The display window is also equipped with a display film.

3. The Chinese color mark sensor according to claim 2, characterized in that: The third PCBA board is set inside a shielding cover, which has an exposure hole for exposing the RGB Sensor chip.

4. The Chinese color mark sensor according to claim 3, characterized in that: The housing includes an outer shell, with an upper cover and a lower cover at the top and bottom of the outer shell.

5. The Chinese color mark sensor according to claim 4, characterized in that: The bottom surface of the upper cover and the top surface of the lower cover are both provided with shielding copper foil, and all components are located between two shielding copper foils.

6. The Chinese color mark sensor according to claim 5, characterized in that: The housing is provided with a light guide column located on one side of the display window.

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