Correlation type photoelectric direct-reading intelligent water meter

Abstract

The utility model discloses a correlation type photoelectric direct-reading intelligent water meter which comprises a shell, a character wheel, a mounting plate, a first light guide body, a second light guide body and a circuit board. A positioning hole communicated with the interior of the shell is formed in the outer side of the shell; the character wheel is rotatably mounted in the shell; the mounting plate is mounted on the outer side wall of the shell, the mounting plate is provided with a positioning boss, a first mounting through hole and a second mounting through hole, and the positioning boss is inserted into the positioning hole; one end of the first light guide body is installed in the first installation through hole, one end of the second light guide body is installed in the second installation through hole, the circuit board is installed on the side, away from the character wheel, of the installation plate, the circuit board is provided with a light-emitting device and a photosensitive device, the light-emitting device right faces the first installation through hole, and the photosensitive device right faces the second installation through hole; by optimizing the design of the correlation type photoelectric direct-reading structure, efficient and accurate detection of the indicating value of the character wheel is achieved, and the device has the advantages of being simple in structure, high in stability, easy to integrate and the like and is suitable for application scenes of various intelligent water meters.

Description

Technical Field

[0001] This utility model relates to the field of water meter technology, and in particular to a through-beam photoelectric direct-reading smart water meter. Background Technology

[0002] Traditional direct-reading smart water meters primarily use either resistive or photoelectric methods to read the digits. Resistive direct-reading meters detect the position of the digits by changing resistance, but they are susceptible to environmental influences and have relatively low accuracy. Photoelectric direct-reading meters are divided into reflective and through-beam types. Reflective photoelectric direct-reading meters detect the digits by reflecting light, but their accuracy is significantly affected by the angle of light reflection and surface quality. In contrast, through-beam photoelectric direct-reading meters detect the digits by directly reflecting light, offering higher accuracy and stability.

[0003] Although through-beam photoelectric direct-reading meters have significant advantages, existing technologies still suffer from complex structures and inconvenient installation. Therefore, developing a through-beam photoelectric direct-reading smart water meter that is simple in structure and easy to install is of great significance. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a through-beam photoelectric direct-reading smart water meter that is simple in structure and easy to install.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a through-beam photoelectric direct-reading smart water meter, comprising...

[0006] The housing has a positioning hole on its outer side that connects to its interior;

[0007] The type wheel is rotatably mounted inside the housing;

[0008] Mounting plate, which is mounted on the outer side wall of the housing, is provided with a positioning boss, a first mounting through hole and a second mounting through hole, and the positioning boss is inserted into the positioning hole;

[0009] A first light guide, one end of which is installed in the first mounting through hole, and the other end is located on one side of the character wheel;

[0010] The second light guide has one end installed in the second mounting through hole and the other end located on the other side of the character wheel;

[0011] A circuit board is mounted on the side of the mounting plate opposite to the character wheel. The circuit board is provided with a light-emitting device and a photosensitive device. The light-emitting device is facing the first mounting through hole, and the photosensitive device is facing the second mounting through hole.

[0012] Furthermore, the mounting plate is provided with a positioning groove, and the outer side wall of the housing is provided with a positioning post that cooperates with the positioning groove.

[0013] Furthermore, there are multiple positioning slots, and the number of positioning posts is equal to the number of positioning slots, and they are connected in a one-to-one correspondence.

[0014] Furthermore, the mounting plate is detachably mounted on the housing.

[0015] Furthermore, the mounting plate is installed on the housing by screws.

[0016] Furthermore, the first light guide is provided with a first snap-fit ​​protrusion and a first limiting protrusion, and the mounting plate has a first buckle. The side of the first snap-fit ​​protrusion facing away from the circuit board abuts against the first buckle, and the side of the first limiting protrusion close to the circuit board abuts against the mounting plate.

[0017] Furthermore, the second light guide is provided with a second snap-fit ​​protrusion and a second limiting protrusion, and the mounting plate has a second buckle. The side of the second snap-fit ​​protrusion facing away from the circuit board abuts against the second buckle, and the side of the second limiting protrusion close to the circuit board abuts against the mounting plate.

[0018] Furthermore, the circuit board is detachably mounted on the mounting plate.

[0019] Furthermore, the outer wall of the positioning boss is provided with an identification mark, and when the mounting plate is installed on the housing, the inner wall of the positioning hole blocks the identification mark.

[0020] Furthermore, the identification mark is made of a reflective material.

[0021] The beneficial effects of this utility model are as follows:

[0022] 1. Precise alignment and stable detection: By setting up the mounting plate, a precise mounting foundation is provided for the first and second light guides, ensuring the precise alignment of the light-emitting device with the first light guide and the photosensitive device with the second light guide. This ensures the accuracy and stability of the optical path, improves detection accuracy, effectively reduces light scattering or misalignment problems caused by installation deviations, and ensures accurate reading of the character wheel display value.

[0023] 2. Simplified Assembly Process: The circuit board, first light guide, and second light guide are uniformly mounted on the mounting plate, forming an integrated module. This design greatly simplifies the assembly process, reduces installation difficulty, and improves production efficiency. During installation, simply fixing the mounting plate to the positioning holes in the housing completes the assembly of the core components, reducing the cumbersome steps of installing and aligning multiple components separately in traditional assembly, and lowering the risk of failure due to assembly errors.

[0024] 3. Compact Structure and Space Optimization: The coordinated design of the light guide and mounting plate makes the entire structure more compact, making efficient use of the internal space of the housing. This space-optimized design not only helps reduce the overall size of the water meter, making it easier to install in space-constrained locations, but also enhances the stability of the structure, reduces detection errors caused by loose or wobbly components, and improves the reliability of the water meter in complex working environments.

[0025] 4. Facilitates Maintenance and Component Replacement: Since the core components are integrated on the mounting plate, maintenance or replacement of components such as the light guide or circuit board can be performed simply by removing the mounting plate, allowing simultaneous access to multiple related components. This greatly simplifies maintenance operations. This design reduces interference with other components during maintenance, lowers maintenance time and costs, and improves the maintainability of the equipment. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the through-beam photoelectric direct-reading smart water meter according to Embodiment 1 of this utility model;

[0027] Figure 2 This is a cross-sectional structural diagram of the through-beam photoelectric direct-reading smart water meter according to Embodiment 1 of this utility model;

[0028] Figure 3 Exploded view of the through-beam photoelectric direct-reading smart water meter of Embodiment 1 of this utility model;

[0029] Figure 4 A schematic diagram of the mounting plate according to Embodiment 1 of this utility model;

[0030] Figure 5 A schematic diagram of the structure of the first light guide in Embodiment 1 of this utility model;

[0031] Figure 6 A schematic diagram of the structure of the second light guide in Embodiment 1 of this utility model.

[0032] Label Explanation:

[0033] 1. Housing; 11. Front housing; 12. Rear cover; 121. Positioning hole; 122. Positioning post; 2. Character wheel; 3. First light guide; 31. First limiting protrusion; 32. First snap-fit ​​protrusion; 4. Second light guide; 41. Second limiting protrusion; 42. Second snap-fit ​​protrusion; 5. Mounting plate; 51. Positioning boss; 52. First mounting through hole; 53. Second mounting through hole; 54. Positioning groove; 55. First buckle; 56. Second buckle; 6. Circuit board; 61. Light-emitting device; 62. Photosensitive device. Detailed Implementation

[0034] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0035] Please refer to Figures 1 to 6 A type of through-beam photoelectric direct-reading smart water meter, including

[0036] The housing 1 has a positioning hole 121 on its outer side that communicates with its interior;

[0037] The character wheel 2 is rotatably mounted inside the housing 1;

[0038] Mounting plate 5 is mounted on the outer side wall of housing 1. Mounting plate 5 is provided with positioning boss 51, first mounting through hole 52 and second mounting through hole 53. Positioning boss 51 is inserted into positioning hole 121.

[0039] The first light guide 3 has one end installed in the first mounting through hole 52 and the other end located on one side of the character wheel 2;

[0040] The second light guide 4 has one end installed in the second mounting through hole 53 and the other end located on the other side of the character wheel 2;

[0041] Circuit board 6 is mounted on the side of the mounting plate 5 away from the character wheel 2. Circuit board 6 is provided with light-emitting device 61 and photosensitive device 62. The light-emitting device 61 is facing the first mounting through hole 52 and the photosensitive device 62 is facing the second mounting through hole 53.

[0042] As can be seen from the above description, the beneficial effects of this utility model are as follows: By setting the mounting plate 5, a precise mounting foundation is provided for the first light guide 3 and the second light guide 4, ensuring the precise alignment of the light-emitting device 61 with the first light guide 3 and the photosensitive device 62 with the second light guide 4, thereby ensuring the accuracy and stability of the optical path, improving detection accuracy, effectively reducing light scattering or misalignment problems caused by installation deviations, and ensuring accurate reading of the value indicated by the character wheel 2; the circuit board 6, the first light guide 3 and the second light guide 4 are uniformly mounted on the mounting plate 5 to form an integrated module. This design greatly simplifies the assembly process, reduces installation difficulty, and improves production efficiency. During installation, the mounting plate 5 only needs to be fixed at the positioning hole 121 of the housing 1 to complete the assembly of the core components, reducing the cumbersome steps of installing and aligning multiple components separately in traditional assembly, and reducing the risk of failure due to assembly errors; the cooperative design of the light guide and the mounting plate 5 makes the entire structure more compact and makes reasonable use of the internal space of the housing 1. This space-optimized design not only helps reduce the overall size of the water meter, making it easier to install in space-constrained locations, but also enhances structural stability, reduces detection errors caused by loose or wobbly components, and improves the reliability of the water meter in complex working environments. Since the core components are integrated on the mounting plate 5, when maintenance or replacement of components such as the light guide or circuit board 6 is required, multiple related components can be accessed simultaneously simply by removing the mounting plate 5, greatly simplifying maintenance operations. This design reduces interference with other components during maintenance, lowers maintenance time and costs, and improves the maintainability of the equipment.

[0043] Furthermore, the mounting plate 5 is provided with a positioning groove 54, and the outer side wall of the housing 1 is provided with a positioning post 122 that cooperates with the positioning groove 54.

[0044] As can be seen from the above description, by setting the positioning groove 54 and the positioning post 122, the installation position of the mounting plate 5 on the housing 1 is ensured to be accurate, and the stability of the overall structure is improved; the cooperation between the positioning groove 54 and the positioning post 122 makes the installation process of the mounting plate 5 more convenient and reduces the time for alignment and adjustment.

[0045] Furthermore, there are multiple positioning slots 54, and the number of positioning posts 122 is equal to the number of positioning slots 54, and they are connected in a one-to-one correspondence.

[0046] As can be seen from the above description, the design of multiple positioning grooves 54 and positioning posts 122 further enhances the positioning accuracy of the mounting plate 5, ensuring that the mounting plate 5 is more firmly fixed on the housing 1; and multiple positioning points make the mounting plate 5 more evenly stressed, reducing deformation or loosening caused by single-point stress.

[0047] Furthermore, the mounting plate 5 is detachably mounted on the housing 1.

[0048] As described above, the detachable design of the mounting plate 5 makes maintenance and replacement of components more convenient, without the need to disassemble the entire water meter, reducing maintenance costs. It also facilitates the upgrading or replacement of the mounting plate 5 and its components as needed, improving the product's flexibility and adaptability.

[0049] Furthermore, the mounting plate 5 is installed on the housing 1 by screws.

[0050] As can be seen from the above description, the screw installation method ensures a firm and reliable connection between the mounting plate 5 and the housing 1, is suitable for various working environments, and screw installation is a common mechanical fixing method that is simple to operate and convenient for on-site installation and maintenance.

[0051] Furthermore, the first light guide 3 is provided with a first snap-fit ​​protrusion 32 and a first limiting protrusion 31, and the mounting plate 5 has a first buckle 55. The side of the first snap-fit ​​protrusion 32 away from the circuit board 6 abuts against the first buckle 55, and the side of the first limiting protrusion 31 close to the circuit board 6 abuts against the mounting plate 5.

[0052] As can be seen from the above description, the snap-fit ​​protrusion and limiting protrusion design of the first light guide 3 ensures that it is firmly installed on the mounting plate 5, preventing loosening or displacement. The cooperation between the snap-fit ​​protrusion and the buckle ensures that the installation position of the light guide is accurate and improves the stability of the optical path.

[0053] Furthermore, the second light guide 4 is provided with a second snap-fit ​​protrusion 42 and a second limiting protrusion 41, and the mounting plate 5 has a second buckle 56. The side of the second snap-fit ​​protrusion 42 away from the circuit board 6 abuts against the second buckle 56, and the side of the second limiting protrusion 41 close to the circuit board 6 abuts against the mounting plate 5.

[0054] As can be seen from the above description, the snap-fit ​​protrusion and limiting protrusion design of the second light guide 4 ensures that it is firmly installed on the mounting plate 5, preventing loosening or displacement. The cooperation between the snap-fit ​​protrusion and the buckle ensures that the installation position of the light guide is accurate and improves the stability of the optical path.

[0055] Furthermore, the circuit board 6 is detachably mounted on the mounting plate 5.

[0056] As can be seen from the above description, the detachable design of the circuit board 6 makes it more convenient to replace or upgrade the circuit board 6 without disassembling the entire mounting plate 5. This facilitates the individual maintenance or replacement of the light-emitting device 61 and the photosensitive device 62 on the circuit board 6, thereby improving maintenance efficiency.

[0057] Furthermore, the outer wall of the positioning boss 51 is provided with an identification mark. When the mounting plate 5 is installed on the housing 1, the inner wall of the positioning hole 121 blocks the identification mark.

[0058] As described above, the design of the identification mark facilitates quick identification of the correct position of the mounting plate 5 during installation, thereby improving installation efficiency. When the mounting plate 5 is installed in place, the inner wall of the positioning hole 121 blocks the identification mark, providing visual feedback and ensuring correct installation.

[0059] Furthermore, the identification mark is made of a reflective material.

[0060] As described above, the identification markings on reflective materials are clearly visible even in low-light environments, making it easy for installers to quickly identify them.

[0061] Please refer to Figures 1 to 6 One embodiment of this utility model is: a through-beam photoelectric direct-reading smart water meter, comprising a housing 1, a digit wheel 2, a mounting plate 5, a first light guide 3, a second light guide 4, and a circuit board 6; the housing 1 includes a front shell 11 and a rear cover 12, the front shell 11 and the rear cover 12 are connected to form a mounting cavity, and the outer side of the rear cover 12 is provided with a positioning hole 121 communicating with the mounting cavity; the digit wheel 2 is rotatably mounted inside the housing 1; the mounting plate 5 is mounted on the outer side wall of the housing 1, and the mounting plate 5 is provided with a positioning boss 51, a first mounting through hole 52, and a second mounting through hole 53. The positioning boss 51 is inserted into the positioning hole 121 through hole 53; one end of the first light guide 3 is installed in the first mounting through hole 52, and the other end is located on one side of the character wheel 2; one end of the second light guide 4 is installed in the second mounting through hole 53, and the other end is located on the other side of the character wheel 2; the circuit board 6 is installed on the side of the mounting plate 5 away from the character wheel 2, and the circuit board 6 is provided with a light-emitting device 61 and a photosensitive device 62, the light-emitting device 61 is facing the first mounting through hole 52, and the photosensitive device 62 is facing the second mounting through hole 53.

[0062] Preferably, the mounting plate 5 is provided with a positioning groove 54, and the outer wall of the housing 1 is provided with a positioning post 122 that cooperates with the positioning groove 54. By setting the positioning groove 54 and the positioning post 122, the installation position of the mounting plate 5 on the housing 1 is ensured to be accurate, and the stability of the overall structure is improved. The cooperation between the positioning groove 54 and the positioning post 122 makes the installation process of the mounting plate 5 more convenient and reduces the time for alignment and adjustment. Optionally, there are multiple positioning grooves 54, and the number of positioning posts 122 is equal to the number of positioning grooves 54 and they are connected one-to-one. The design of multiple positioning grooves 54 and positioning posts 122 further enhances the positioning accuracy of the mounting plate 5 and ensures that the mounting plate 5 is more firmly fixed on the housing 1. In addition, multiple positioning points make the mounting plate 5 more evenly stressed, reducing deformation or loosening caused by single-point stress.

[0063] Optionally, the mounting plate 5 can be detachably installed on the housing 1. The detachable design of the mounting plate 5 makes maintenance and replacement of parts more convenient, without disassembling the entire water meter, reducing maintenance costs. It also facilitates upgrading or replacing the mounting plate 5 and its components as needed, improving the product's flexibility and adaptability. Further, the mounting plate 5 can be installed on the housing 1 with screws. The screw installation method ensures a firm and reliable connection between the mounting plate 5 and the housing 1, is suitable for various working environments, and screw installation is a common mechanical fixing method that is simple to operate and convenient for on-site installation and maintenance. In addition, the mounting plate 5 can also be installed on the housing 1 with bolts or clips.

[0064] In this embodiment, the first light guide 3 is provided with a first snap-fit ​​protrusion 32 and a first limiting protrusion 31, and the mounting plate 5 has a first latch 55. The side of the first snap-fit ​​protrusion 32 facing away from the circuit board 6 abuts against the first latch 55, and the side of the first limiting protrusion 31 near the circuit board 6 abuts against the mounting plate 5. The second light guide 4 is provided with a second snap-fit ​​protrusion 42 and a second limiting protrusion 41, and the mounting plate 5 has a second latch 56. The side of the second snap-fit ​​protrusion 42 facing away from the circuit board 6 abuts against the second latch 56, and the side of the second limiting protrusion 41 near the circuit board 6 abuts against the mounting plate 5. This ensures accurate installation of the light guide and improves the stability of the optical path.

[0065] Optionally, the circuit board 6 can be detachably mounted on the mounting plate 5. The detachable design of the circuit board 6 makes it easier to replace or upgrade the circuit board 6 without disassembling the entire mounting plate 5. This facilitates the individual maintenance or replacement of the light-emitting device 61 and the photosensitive device 62 on the circuit board 6, thereby improving maintenance efficiency.

[0066] In some other embodiments, an identification mark (not shown) may be provided on the outer wall of the positioning boss 51. When the mounting plate 5 is installed on the housing 1, the inner wall of the positioning hole 121 blocks the identification mark. It is easy to understand that the design of the identification mark facilitates the quick identification of the correct position of the mounting plate 5 during the installation process, thereby improving installation efficiency. When the mounting plate 5 is installed in place, the inner wall of the positioning hole 121 blocks the identification mark, providing visual feedback to ensure correct installation. Furthermore, the identification mark may be made of reflective material. Reflective material identification marks are clearly visible even in low-light environments, making it easy for installers to quickly identify them.

[0067] In summary, the through-beam photoelectric direct-reading smart water meter provided by this utility model provides a precise mounting base for the first and second light guides by setting up a mounting plate. This ensures accurate alignment between the light-emitting device and the first light guide, and between the photosensitive device and the second light guide, thereby guaranteeing the accuracy and stability of the optical path, improving detection accuracy, effectively reducing light scattering or misalignment problems caused by installation deviations, and ensuring accurate reading of the digit wheel indication. The circuit board, the first light guide, and the second light guide are uniformly mounted on the mounting plate, forming an integrated module. This design greatly simplifies the assembly process, reduces installation difficulty, and improves production efficiency. During installation, simply fixing the mounting plate to the positioning holes in the housing completes the assembly of the core components, reducing the cumbersome steps of installing and aligning multiple components separately in traditional assembly, and reducing the risk of failure due to assembly errors. The cooperative design of the light guide and the mounting plate makes the entire structure more compact and makes reasonable use of the internal space of the housing. This space-optimized design not only helps reduce the overall size of the water meter, making it easier to install in space-constrained locations, but also enhances structural stability, reduces detection errors caused by loose or wobbly components, and improves the reliability of the water meter in complex operating environments. Because the core components are integrated on the mounting plate, when maintenance or replacement of components such as the light guide or circuit board is required, multiple related components can be accessed simultaneously simply by removing the mounting plate, greatly simplifying maintenance operations. This design reduces interference with other components during maintenance, lowers maintenance time and costs, and improves the maintainability of the equipment.

[0068] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A through-beam photoelectric direct-reading smart water meter, characterized in that, include The housing has a positioning hole on its outer side that connects to its interior; The type wheel is rotatably mounted inside the housing; Mounting plate, which is mounted on the outer side wall of the housing, is provided with a positioning boss, a first mounting through hole and a second mounting through hole, and the positioning boss is inserted into the positioning hole; A first light guide, one end of which is installed in the first mounting through hole, and the other end is located on one side of the character wheel; The second light guide has one end installed in the second mounting through hole and the other end located on the other side of the character wheel; A circuit board is mounted on the side of the mounting plate opposite to the character wheel. The circuit board is provided with a light-emitting device and a photosensitive device. The light-emitting device is facing the first mounting through hole, and the photosensitive device is facing the second mounting through hole.

2. The through-beam photoelectric direct-reading smart water meter according to claim 1, characterized in that, The mounting plate is provided with a positioning groove, and the outer side wall of the housing is provided with a positioning post that cooperates with the positioning groove.

3. The through-beam photoelectric direct-reading smart water meter according to claim 2, characterized in that, The number of positioning slots is multiple, and the number of positioning posts is equal to the number of positioning slots, and they are connected in a one-to-one correspondence.

4. The through-beam photoelectric direct-reading smart water meter according to claim 1, characterized in that, The mounting plate is detachably mounted on the housing.

5. The through-beam photoelectric direct-reading smart water meter according to claim 4, characterized in that, The mounting plate is attached to the housing by screws.

6. The through-beam photoelectric direct-reading smart water meter according to claim 1, characterized in that, The first light guide is provided with a first snap-fit ​​protrusion and a first limiting protrusion, and the mounting plate has a first buckle. The side of the first snap-fit ​​protrusion facing away from the circuit board abuts against the first buckle, and the side of the first limiting protrusion close to the circuit board abuts against the mounting plate.

7. The through-beam photoelectric direct-reading smart water meter according to claim 1, characterized in that, The second light guide is provided with a second snap-fit ​​protrusion and a second limiting protrusion, and the mounting plate has a second buckle. The side of the second snap-fit ​​protrusion away from the circuit board abuts against the second buckle, and the side of the second limiting protrusion near the circuit board abuts against the mounting plate.

8. The through-beam photoelectric direct-reading smart water meter according to claim 1, characterized in that, The circuit board is detachably mounted on the mounting plate.

9. The through-beam photoelectric direct-reading smart water meter according to claim 1, characterized in that, The outer wall of the positioning boss is provided with an identification mark. When the mounting plate is installed on the housing, the inner wall of the positioning hole covers the identification mark.

10. The through-beam photoelectric direct-reading smart water meter according to claim 9, characterized in that, The identification mark is made of reflective material.

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