Optical modulation mechanism for optical fiber direct-reading collector

Abstract

The utility model discloses a kind of optical modulation mechanisms for optical fiber direct-reading collector, including counter frame, five-slot arc segment and signal wheel, signal wheel is installed on counter frame by wheel axle, five-slot arc segment is located above signal wheel, and is installed on counter frame, and the axis of five-slot arc segment coincides with the wheel axle of signal wheel.The counter frame and five-slot arc segment are split type structure, volume is reduced, so that each signal wheel corresponds a five-slot arc segment, each signal wheel can be detected, and the application is more widely used.After each five-slot arc segment is installed into incident fiber and reflected fiber in fiber slot, multiple five-slot arc segments are connected by positioning pin, the five-slot arc segment at end portion is pressed by front cover plate, this combination is formed into fiber bundle arc segment assembly, fiber bundle arc segment assembly is installed on counter frame, so that installation operation is more convenient.

Description

Technical Field

[0001] This utility model belongs to the field of data acquisition for metering instruments, and relates to an optical modulation mechanism for an optical fiber direct-reading data acquisition device. Background Technology

[0002] The inventor's national utility model patent (patent number: ZL201320006626.4), granted in 2013, describes a "photoelectric conversion mechanism for an optical fiber direct-reading acquisition device." This mechanism requires mounting incident and reflective optical fiber bundles on a counter bracket, necessitating drilling holes in the bracket. Due to the extremely small diameter of the optical cables, these mounting holes can only be obtained through machining. Furthermore, a specific angle must exist between the incident and reflective optical cables for the reflected light to be captured, further complicating the drilling process and increasing production costs. The patent also mentions that the counter bracket and signal wheel are coaxially integrated, making drilling difficult (one signal wheel requires 10 holes). Drilling is even more impossible for complex counter bracket structures, thus limiting its widespread application. Furthermore, due to the limited minimum diameter of the optical fiber used, the groove width on the signal wheel is relatively wide, resulting in a larger signal wheel width. Also, due to the limited space inside the meter, a sufficient number of signal wheels cannot be installed within the limited space. The patent describes a method of calculating the information on other character wheels by collecting information from two signal wheels and then using a carry operation method, which limits its marketability. Utility Model Content

[0003] To address the problems of high production costs, difficulty in obtaining materials, and difficulty in processing existing technologies, this utility model provides a light modulation mechanism for an optical fiber direct-reading acquisition device. The improvement lies in that it includes a counter frame 3, a five-slot arc segment 1, and a signal wheel 2. The signal wheel 2 is mounted on the counter frame 3 via a wheel axle 4. The five-slot arc segment 1 is located above the signal wheel 2 and mounted on the counter frame 3, and the centerline of the five-slot arc segment 1 coincides with the wheel axle 4 of the signal wheel 2.

[0004] Furthermore, in the optical modulation mechanism for the fiber optic direct-read acquisition device described above, the five-slot arc segment 1 is provided with five fiber optic slots 11, and the included angle between each two adjacent fiber optic slots 11 is 36°.

[0005] Furthermore, in the optical modulation mechanism for the optical fiber direct reading acquisition device described above, each signal word wheel 2 is provided with a five-slot arc segment 1, and the extended lines of the axes of the five optical fiber slots 11 on the same five-slot arc segment 1 all intersect at the axis of the five-slot arc segment 1.

[0006] Furthermore, in the optical modulation mechanism for the fiber optic direct-read acquisition device described above, each of the five-slot arc segments 1 includes a mounting surface 15 and a mating surface 16, and the fiber optic slots 11 are all disposed on the mounting surface 15.

[0007] Furthermore, in the optical modulation mechanism for the fiber optic direct-read acquisition device described above, each of the five-slot arc segments 1 has five reinforcing ribs 12 on the back side of the mounting surface 15, and the end face of the reinforcing rib 12 is the mating surface 16.

[0008] Furthermore, in the optical modulation mechanism for the fiber optic direct-read acquisition device described above, each of the five-slot arc segments 1 is provided with a positioning hole 13, and a positioning pin 14 passing through the positioning hole 13 connects two adjacent five-slot arc segments 1.

[0009] Furthermore, in the optical modulation mechanism for the fiber optic direct-reading acquisition device described above, the arc of each of the five-slot arc segments 1 is no greater than 180°; in the optical modulation mechanism for the fiber optic direct-reading acquisition device described above, the five-slot arc segments 1 are formed by injection molding in one piece.

[0010] Furthermore, in the optical modulation mechanism of the optical fiber direct reading acquisition device described above, after the incident optical fiber 6 and the reflective optical fiber 7 are installed in the optical fiber slot 11 of each five-slot arc segment 1, the multiple five-slot arc segments 1 are connected by positioning pins 14, and the five-slot arc segment 1 at the end is pressed by the front cover plate 5. This combination forms an optical fiber bundle arc segment assembly, which is installed on the counter frame 3.

[0011] Furthermore, in the optical modulation mechanism of the optical fiber direct reading acquisition device described above, the incident optical fiber 6 on the same five-slot arc segment 1 of the optical fiber bundle arc segment assembly forms a group of incident optical fiber bundles 8, and the number of incident optical fiber bundles 8 is equal to the number of five-slot arc segments 1; the reflective optical fiber 7 in the corresponding optical fiber slots 11 on different five-slot arc segments 1 forms a group of reflective optical fiber bundles 9, and there are 5 groups of reflective optical fiber bundles 9.

[0012] Furthermore, in the optical modulation mechanism for the fiber optic direct-read acquisition device described above, the mounting surface 15 of one five-slot arc segment 1 is pressed together with the mating surface 16 of another adjacent five-slot arc segment 1.

[0013] The optical modulation mechanism provided by this utility model also has the following beneficial effects:

[0014] 1. The counter frame and the five-slot arc segment are separate structures, which reduces the size and allows each signal wheel to correspond to a five-slot arc segment, enabling detection of each signal wheel and making the application more extensive.

[0015] 2. The five-groove arc segment can be integrally molded by injection molding, which is easy to process, has high production efficiency and low cost.

[0016] 3. By creating fiber optic slots on the five-slot arc segment, the problem of drilling, which is required and difficult in traditional integrated structures, is solved. This reduces the difficulty of fiber optic installation, allowing traditional optical cables to be replaced with optical fibers. The size of the fiber optic slot is determined based on the number and diameter of the internal optical fibers, greatly saving space.

[0017] 4. After the optical fibers are installed independently between each of the five-slot arc segments, the five-slot arc segments are then combined and installed together, which makes the installation of optical fibers and optical fiber slots more convenient, and also reduces the difficulty of fault detection and replacement.

[0018] 5. Since the five-slot arc segment changes the fiber optic hole to a fiber optic slot, the original optical cable can be replaced with a fiber optic cable with a smaller diameter. This reduces the size of the slot on the signal wheel corresponding to the fiber optic cable, thus reducing the overall size of the signal wheel. As a result, more signal wheels can be installed in the installation space, making the data acquisition range wider and thus increasing the application range. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the optical modulation mechanism of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the five-groove arc segment of this utility model;

[0021] Figure 3 This is a front view of the five-groove arc segment of this utility model.

[0022] Figure 4 This is a schematic diagram of the structure of one embodiment of the present invention;

[0023] Figure 5 This is a diagram showing the optical fiber connection of the optical modulation mechanism of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Five-slot arc segment; 11. Fiber optic channel; 12. Reinforcing rib; 13. Positioning hole; 14. Positioning pin; 15. Mounting surface; 16. Mating surface;

[0026] 2. Signal wheel; 21. Wheel groove; 22. Reflective arc segment;

[0027] 3. Counter frame; 4. Axle; 5. Front cover plate; 6. Incident fiber; 7. Reflecting fiber; 8. Incident fiber bundle; 81. Light-emitting tube; 9. Reflecting fiber bundle; 91. Phototube;

[0028] A. Axis. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0030] To address the aforementioned problems in the existing technology, this application provides an optical modulation mechanism for an optical fiber direct-reading data acquisition device, which can be used for data acquisition from metering instruments such as water meters, hot water meters, and gas meters. The optical modulation mechanism has a simple structure, with a split counter frame 3 and a five-slot arc segment 1 design, which greatly reduces the processing difficulty, saves production costs, improves production efficiency, and saves space, making its application range wider and greatly improving its market prospects.

[0031] like Figures 1 to 5 As shown, where, Figure 1 This is a schematic diagram of the optical modulation mechanism of this utility model; Figure 2 This is a schematic diagram of the structure of the five-groove arc segment 1 of this utility model; Figure 3 This is a front structural diagram of the five-groove arc segment 1 of this utility model; Figure 4 This is a schematic diagram of the structure of one embodiment of the present invention; Figure 5 This is a diagram showing the optical fiber connection of the optical modulation mechanism of this utility model.

[0032] This utility model provides an optical modulation mechanism for an optical fiber direct-reading acquisition device, comprising a five-slot arc segment 1, a signal word wheel 2, and a counter frame 3. For example... Figure 1 As shown, the signal wheel 2 is mounted on the counter frame 3, and the five-slot arc segment 1 spans above the signal wheel 2 and is also mounted on the counter frame 3. The centerline of the five-slot arc segment 1 coincides with the centerline of the wheel axle 4 of the signal wheel 2.

[0033] like Figure 1 , Figure 4 and Figure 5 As shown, a five-slot arc segment 1 has five fiber optic slots 11, with an included angle of 36° between each pair of adjacent fiber optic slots 11. Each fiber optic slot 11 contains an incident fiber 6 and a reflecting fiber 7. The outer edge of the signal digit wheel 2 has a 180° circumferential groove 21, and the corresponding part of the groove 21 is a reflective arc segment 22. The five-slot arc segment 1 and the counter frame 3 are fixed. When the signal digit wheel 2 rotates, the positional relationship between the groove 21 and the reflective arc segment 22 and the five fiber optic slots 11 changes with the rotation of the signal digit wheel 2. The groove 21 does not reflect light, while the reflective arc segment 22 reflects light.

[0034] like Figure 4 As shown, each signal wheel 2 corresponds to a five-slot arc segment 1, such as... Figure 4 If there are 5 signal character wheels 2, then there are 5 five-slot arc segments 1.

[0035] like Figure 3As shown, the extended axes of the five fiber slots 11 on the same five-slot arc segment 1 all intersect at point A, the axis of the five-slot arc segment 1.

[0036] like Figure 2 and Figure 4 As shown, each five-slot arc segment 1 includes a mounting surface 15 and a mating surface 16. The five fiber optic slots 11 on the same five-slot arc segment 1 are all located on the same mounting surface 15. When multiple five-slot arc segments 1 are assembled, the mounting surface 15 of one five-slot arc segment 1 and the mating surface 16 of the adjacent five-slot arc segment 1 cooperate and press together. To ensure that the mating surfaces 16 and mounting surfaces 15 of two adjacent five-slot arc segments 1 cooperate and press together, positioning holes 13 are also provided on the five-slot arc segment 1. Positioning pins 14 pass through the positioning holes 13 on two adjacent five-slot arc segments 1 to connect them.

[0037] Furthermore, such as Figure 4 and Figure 5 As shown, the optical modulation mechanism for the fiber optic direct-read acquisition device also includes a front cover plate 5, which is fitted and pressed together with the mounting surface 15 of a five-slot arc segment 1 located at the end. Because the mounting surface 15 of the five-slot arc segment 1 located at the end does not have a mating surface 16 to provide a pressing fit, the front cover plate 5 is provided to fit and press together with the mounting surface 15 of the five-slot arc segment 1 at the end.

[0038] This application can also form fiber bundle arc segment assemblies, specifically as follows: Figure 4 and 5 As shown ( Figure 4 (No optical fiber is installed in the optical fiber slot 11). After the incident optical fiber 6 and the reflection optical fiber 7 are installed in the optical fiber slot 11 of each five-slot arc segment 1, the multiple five-slot arc segments are connected by positioning pins 14. The five-slot arc segments 1 at the end are pressed together by the front cover plate 5. This combination forms an optical fiber bundle arc segment assembly, which is installed on the counter frame 3.

[0039] On the fiber bundle arc segment assembly, the incident fibers 6 on the same five-slot arc segment form a group of incident fiber bundles 8. The number of incident fiber bundles 8 is equal to the number of five-slot arc segments 1, and each group of incident fiber bundles 8 is connected to a light-emitting tube 81. The reflective fibers 7 in the corresponding fiber slots 11 on different five-slot arc segments 1 form a group of reflective fiber bundles 9. There are 5 groups of reflective fiber bundles 9, which is equal to the number of fiber slots 11 on a five-slot arc segment 1, and each group of reflective fiber bundles 9 is connected to a phototube 91.

[0040] In operation, any one of the light-emitting tubes 81 emits light, illuminating the five incident optical fibers 6 on the corresponding five-slot arc segment 1. The part of the reflective optical fiber 7 corresponding to the wheel groove 21 of the five incident optical fibers 6 cannot reflect light, and the corresponding phototube 91 is not conducting; the part corresponding to the reflective arc segment 22 reflects light, and the corresponding phototube 91 conducts light.

[0041] like Figure 2 and Figure 4 As shown, each of the five-slot arc segments 1 has five reinforcing ribs 12 on the back of the mounting surface 15. The end face of the reinforcing rib 12 is the aforementioned mating surface 16. During assembly, each of the five reinforcing ribs 12 of the five-slot arc segments 1 is pressed against the five fiber optic slots 11 on the adjacent five-slot arc segment 1.

[0042] Furthermore, the aforementioned five-groove arc segment 1 is manufactured using an integral injection molding process.

[0043] Furthermore, the radian of each five-slot arc segment 1 is no greater than 180°. For example... Figures 1 to 5 In the embodiments provided in this application, a 180° five-slot arc segment 1 is selected. In practical applications, the angle of the five-slot arc segment 1 can be selected as needed, but it is necessary to ensure that the included angle between the five fiber slots 11 on the same five-slot arc segment 1 is 36°.

[0044] The following example uses the conversion of binary to decimal Gray code. The Gray code conversion table for converting a 5-bit binary number to a 1-decimal number used in this application is shown in Table 1.

[0045] Table 1. Gray Code Conversion Table

[0046]

[0047] As shown in Table 1 above and Figure 5 As shown, whenever the signal wheel 2 rotates 36°, one of the reflective optical fibers 7 on the five-slot arc segment 1 corresponding to the signal wheel 2 must change. For example, in the initial position, the wheel slot 21 on the signal wheel 2 corresponds to all five incident optical fibers 6. At this time, none of the reflective optical fibers 7 reflect light, and the corresponding ground phototubes 91 are all off-circuited. This state corresponds to "00000" in Table 1. When the signal wheel 2 rotates 36°, four incident optical fibers 6 correspond to the wheel slot 21, one reflective optical fiber 7 corresponds to the reflective arc segment 22, and the corresponding ground phototube 91 is on-circuited. This state corresponds to "00001" in Table 1. And so on, every 36° rotation of the signal wheel 2 corresponds to one of the states in Table 1 above. When the signal wheel 2 rotates 360°, it returns to the initial state.

[0048] The optical modulation mechanism provided by this utility model also has the following beneficial effects:

[0049] 1. The counter frame 3 and the five-slot arc segment 1 are separate structures, which reduces the volume and allows each signal wheel 2 to correspond to one five-slot arc segment 1, enabling detection of each signal wheel 2 and making the application more extensive.

[0050] 2. The five-groove arc segment 1 can be integrally molded by injection molding, which is easy to process, has high production efficiency and low cost.

[0051] 3. By creating fiber optic slots 11 on the five-slot arc segment 1, the problem of drilling, which is required and difficult in traditional integrated structures, is solved. This reduces the difficulty of fiber optic installation, allowing traditional optical cables to be replaced with optical fibers. The size of the fiber optic slot 11 is determined based on the number and diameter of the internal optical fibers, greatly saving space.

[0052] 4. After the optical fibers are installed independently between each of the five-slot arc segments 1, the five-slot arc segments 1 are then combined and installed together, which makes the installation of optical fibers and optical fiber slots 11 more convenient, and also reduces the difficulty of fault detection and replacement.

[0053] 5. Since the five-slot arc segment 1 changes the fiber optic hole to the fiber optic slot 11, the original optical cable can be replaced with a fiber optic cable with a smaller diameter. As a result, the size of the slot 21 on the signal wheel 2 corresponding to the fiber optic cable is also reduced. Therefore, the overall size of the signal wheel 2 is reduced, and as many signal wheels 2 as possible can be set in the installation space, so that the data acquisition range is wider and the application range is increased.

[0054] As is known from common technical knowledge, this utility model can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

Claims

1. An optical modulation mechanism for an optical fiber direct reading collector, characterized by, It includes a counter frame (3), a five-slot arc segment (1) and a signal wheel (2). The signal wheel (2) is mounted on the counter frame (3) via a wheel axle (4). The five-slot arc segment (1) is located above the signal wheel (2) and mounted on the counter frame (3). The center line of the five-slot arc segment (1) coincides with the wheel axle (4) of the signal wheel (2).

2. The optical modulation mechanism for a fiber optic direct reading collector according to claim 1, wherein The five-slot arc segment (1) is provided with five fiber optic slots (11), and the included angle between each two adjacent fiber optic slots (11) is 36°.

3. The optical modulation mechanism for a fiber optic direct reading collector according to claim 2, wherein Each of the signal word wheels (2) is provided with a five-slot arc segment (1), and the extended lines of the axes of the five fiber slots (11) on the same five-slot arc segment (1) all intersect at the axis of the five-slot arc segment (1).

4. The optical modulation mechanism for a fiber optic direct reading collector according to claim 3, wherein Each of the five-slot arc segments (1) includes a mounting surface (15) and a mating surface (16), and the fiber optic slots (11) are all located on the mounting surface (15).

5. The optical modulation mechanism for a fiber optic direct reading collector according to claim 4, wherein Each of the five-groove arc segments (1) has five reinforcing ribs (12) on the back of the mounting surface (15), and the end face of the reinforcing ribs (12) is the mating surface (16).

6. The optical modulation mechanism for a fiber optic direct reading collector according to claim 5, wherein Each of the five-groove arc segments (1) is provided with a positioning hole (13), and a positioning pin (14) passes through the positioning hole (13) to connect two adjacent five-groove arc segments (1).

7. The optical modulation mechanism for the fiber optic direct-read acquisition device according to claim 6, characterized in that, The arc of each of the five-groove arc segments (1) is no greater than 180°; the five-groove arc segments (1) are formed by injection molding in one piece.

8. The optical modulation mechanism for the fiber optic direct-read acquisition device according to claim 6 or 7, characterized in that, After an incident fiber (6) and a reflective fiber (7) are installed in the fiber slot (11) of each of the five-slot arc segments (1), the multiple five-slot arc segments (1) are connected by the positioning pin (14). The five-slot arc segments (1) at the end are pressed by the front cover plate (5). This combination forms a fiber bundle arc segment assembly, which is installed on the counter frame (3).

9. The optical modulation mechanism for the fiber optic direct-read acquisition device according to claim 8, characterized in that, The incident optical fibers (6) on the same five-slot arc segment (1) of the optical fiber bundle arc segment assembly are formed into a group of incident optical fiber bundles (8), and the number of incident optical fiber bundles (8) is equal to the number of five-slot arc segments (1); the reflective optical fibers (7) in the corresponding optical fiber slots (11) on different five-slot arc segments (1) are formed into a group of reflective optical fiber bundles (9), and there are 5 groups of reflective optical fiber bundles (9).

10. The optical modulation mechanism for a fiber optic direct reading collector according to claim 9, wherein The mounting surface (15) of one of the five-groove arc segments (1) is pressed together with the mating surface (16) of another adjacent five-groove arc segment (1).

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