Wireless low-power intelligent water meter circuit board

Abstract

The utility model discloses a kind of wireless low-power intelligent water meter circuit board, specifically related to water gauge technical field, including mould box, the inside of mould box is provided with water meter circuit board, the front of water meter circuit board is provided with MCU chip and wireless communication module, positioning ring is provided on mould box, potting separation component is provided on positioning ring, organic silicon resin potting adhesive is provided on potting separation component, and organic silicon resin potting adhesive is located at the front of water meter circuit board;The outer surface of mould box is fixedly connected with fixed lug;Wireless communication module uses NB-IoT communication module, the input end of MCU chip is electrically connected with the output end of intelligent water meter, and the output end of MCU chip is electrically connected with the input end of NB-IoT communication module;Positioning groove is set up at the top of mould box, positioning ring is located in positioning groove, and sink hole is set up on positioning ring;The utility model solves the technical problem that the potting mode of water meter circuit board leads to increased repair difficulty and material damage rate.

Description

Technical Field

[0001] This utility model relates to the field of water meter technology, and more specifically, to a wireless low-power smart water meter circuit board. Background Technology

[0002] A smart water meter is a new type of water meter that uses modern microelectronics technology, modern sensing technology, and smart IC card technology to measure water consumption and transmit water data for settlement transactions. In related technologies, the circuit board of a smart water meter is installed inside the meter's casing, and the circuit board, through the mounting of components, provides the smart water meter with computing and communication capabilities.

[0003] For example, a utility model patent with publication number CN222897298U discloses a wireless communication device, including a monitor body and an antenna; the monitor body includes a shell, a circuit board and a battery; the circuit board is equipped with a communication module; the shell has a first housing and a second housing arranged front and back, the circuit board is encapsulated in the first housing by potting compound, and the battery is disposed in the second housing.

[0004] In the aforementioned patent, although the circuit board for the water meter is encapsulated and fixed with polyurethane potting compound, which provides dustproof, moisture-proof and mechanical protection, the potting material is quite hard after curing. This makes it difficult to repair the components mounted on the circuit board and increases the damage rate of the potting material.

[0005] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a wireless low-power smart water meter circuit board in order to achieve a more practical value. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the problem of increased repair difficulty and material damage rate caused by the potting method of water meter circuit boards.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a wireless low-power smart water meter circuit board, comprising a mold box, wherein a water meter circuit board is disposed inside the mold box, an MCU chip and a wireless communication module are disposed on the front side of the water meter circuit board, a positioning ring is disposed on the mold box, a potting separator is disposed on the positioning ring, and an organosilicon resin potting compound is disposed on the potting separator, wherein the organosilicon resin potting compound is located on the front side of the water meter circuit board.

[0008] In a preferred embodiment, a fixing lug is fixedly connected to the outer surface of the mold box.

[0009] In a preferred embodiment, the wireless communication module is an NB-IoT communication module, the input terminal of the MCU chip is electrically connected to the output terminal of the smart water meter, and the output terminal of the MCU chip is electrically connected to the input terminal of the NB-IoT communication module.

[0010] In a preferred embodiment, the top of the mold box is provided with a positioning groove, the positioning ring is located in the positioning groove, the positioning ring is provided with a countersunk hole, a fixing bolt is provided in the countersunk hole, and one end of the fixing bolt is threaded into the positioning groove.

[0011] In a preferred embodiment, the potting and separating assembly includes multiple horizontal separating pieces and multiple vertical separating pieces, all of which are fixedly connected to the inner wall of the positioning ring. Multiple potting areas are formed between the multiple horizontal separating pieces and the multiple vertical separating pieces, and the silicone resin potting compound is filled in the potting areas.

[0012] In a preferred embodiment, an insulating sheet one is fixedly connected to the bottom of the horizontal dividing plate, and an insulating sheet two is fixedly connected to the bottom of the vertical dividing plate. Both the insulating sheet one and the insulating sheet two are in close contact with the front of the water meter circuit board.

[0013] In a preferred embodiment, the horizontal and vertical dividing strips are arranged vertically, and the vertical dividing strips are provided with clearance grooves for the horizontal dividing strips to avoid each other.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] This wireless low-power smart water meter circuit board features a potting partition component. This component divides the circuit into multiple potting zones that correspond to the positions of the components on the circuit board. Since the silicone resin potting compound cures to form an elastomer, which is easy to cut and repair, and because the potting zones allow for independent potting of the components on the circuit board, the damage rate of cutting the silicone resin potting compound can be reduced when diagnosing faults in the water meter circuit board, facilitating secondary encapsulation. Attached Figure Description

[0016] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a planar sectional view of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the mold box of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the potting and sealing assembly of this utility model;

[0021] Figure 5 This utility model Figure 2 Enlarged view of section A.

[0022] The attached diagram is labeled as follows: 1. Molding box; 2. Water meter circuit board; 3. MCU chip; 4. Wireless communication module; 5. Positioning ring; 6. Encapsulation and separation assembly; 61. Separator horizontal piece; 62. Separator vertical piece; 7. Encapsulating glue; 8. Positioning groove; 9. Fixing ear; 10. Countersunk hole; 11. Fixing bolt; 12. Insulating sheet one; 13. Insulating sheet two; 14. Clearance groove. Detailed Implementation

[0023] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] See also Figures 1-5 This utility model provides a wireless low-power smart water meter circuit board, including a housing 1. The housing 1 contains a water meter circuit board 2. The front of the water meter circuit board 2 contains an MCU chip 3 and a wireless communication module 4. The wireless communication module 4 adopts an NB-IoT communication module. The input terminal of the MCU chip 3 is electrically connected to the output terminal of the smart water meter, and the output terminal of the MCU chip 3 is electrically connected to the input terminal of the NB-IoT communication module.

[0025] The housing 1 supports the position of the water meter circuit board 2, allowing it to be placed inside the water meter casing. The core function of the MCU chip 3 is to control the device, process data, and coordinate communication. The NB-IoT communication module is a low-power wide-area network module based on narrowband IoT technology, mainly used to achieve wireless, low-power, and wide-coverage IoT device connections. In this way, when the smart water meter is in use, the signal from the smart water meter can be processed by the MCU chip 3 and then wirelessly transmitted to the external terminal through the NB-IoT communication module. Since both the MCU chip 3 and the NB-IoT communication module are general standard parts or components known to those skilled in the art, their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0026] It is worth noting that the components set on the water meter circuit board 2 in this application are not limited to the MCU chip 3 and the NB-IoT communication module. Components such as the display module and power supply module used in smart water meters can also be set on the water meter circuit board 2.

[0027] In this embodiment, a fixing lug 9 is fixedly connected to the outer surface of the mold box 1.

[0028] The fixing lug 9 can be installed in the housing of the smart water meter with the help of bolts.

[0029] In this embodiment: a potting separator 6 is provided on the positioning ring 5. The potting separator 6 includes multiple horizontal separators 61 and multiple vertical separators 62. The horizontal separators 61 and the vertical separators 62 are fixedly connected to the inner wall of the positioning ring 5, and multiple potting areas are formed between the multiple horizontal separators 61 and the multiple vertical separators 62.

[0030] The arrangement of multiple horizontal dividing strips 61 and multiple vertical dividing strips 62 can be used to form multiple potting areas. The potting areas can be designed according to the position and size of multiple components on the water meter circuit board 2, so that the components on the water meter circuit board 2 can achieve the effect of independent potting.

[0031] In this embodiment: the silicone resin potting compound 7 is filled in the potting area.

[0032] Because the silicone resin potting compound 7 can form an elastomer after curing in the potting area, the elastomer can be softened by injecting solvent through needle puncture opening. This makes it easy to quickly clean the silicone resin potting compound 7 at the location of the component corresponding to the fault diagnosis. The component fault diagnosis can be achieved by visual inspection or X-ray fluoroscopy.

[0033] In addition, since multiple components correspond independently to multiple potting areas, when diagnosing faulty components, only the corresponding silicone resin potting compound 7 needs to be removed. This avoids damage to a large area of ​​silicone resin potting compound 7. When performing secondary potting with silicone resin potting compound 7, it can be directly filled into the potting area, making repair relatively convenient.

[0034] In this embodiment: a positioning ring 5 is provided on the mold box 1, a positioning groove 8 is provided on the top of the mold box 1, the positioning ring 5 is located in the positioning groove 8, a countersunk hole 10 is provided on the positioning ring 5, a fixing bolt 11 is provided in the countersunk hole 10, and one end of the fixing bolt 11 is threaded into the positioning groove 8.

[0035] The positioning ring 5 is set in the positioning groove 8 and connected by the fixing bolt 11. By limiting the setting position of the positioning ring 5, the potting area formed by the potting separator 6 can be stably aligned with the components on the water meter circuit board 2.

[0036] In this embodiment, both the horizontal separator 61 and the vertical separator 62 are made of copper.

[0037] Because the silicone resin potting compound 7 has high thermal conductivity and high insulation, its curing on the water meter circuit board 2 can significantly improve the thermal conductivity. Combined with the high thermal conductivity material of the horizontal and vertical separators 61 and 62, the horizontal and vertical separators 61 and 62 can increase the thermal conductivity area of ​​the silicone resin potting compound 7, which can further meet the heat dissipation requirements of the water meter circuit board 2.

[0038] In this embodiment: an insulating sheet 12 is fixedly connected to the bottom of the horizontal dividing piece 61, and an insulating sheet 13 is fixedly connected to the bottom of the vertical dividing piece 62. Both the insulating sheet 12 and the insulating sheet 13 are tightly attached to the front of the water meter circuit board 2.

[0039] The arrangement of insulating sheet 12 and insulating sheet 13 being tightly attached to the front of the water meter circuit board 2 provides insulation protection for the ends of the separating horizontal sheet 61 and the separating vertical sheet 62.

[0040] In this embodiment, the horizontal dividing strip 61 and the vertical dividing strip 62 are arranged vertically, and the vertical dividing strip 62 is provided with a clearance groove 14 for the horizontal dividing strip 61 to avoid it.

[0041] When the horizontal dividing piece 61 and the vertical dividing piece 62 are fixedly connected within the positioning ring 5, the clearance groove 14 facilitates the insertion and combination of the vertical dividing piece 62 and the horizontal dividing piece 61, thereby improving assembly efficiency.

Claims

1. A wireless low-power smart water meter circuit board, characterized in that: The device includes a mold box (1), inside which a water meter circuit board (2) is installed. On the front of the water meter circuit board (2) are an MCU chip (3) and a wireless communication module (4). A positioning ring (5) is installed on the mold box (1), and a potting separator assembly (6) is installed on the positioning ring (5). Silicone resin potting compound (7) is installed on the potting separator assembly (6), and the silicone resin potting compound (7) is located on the front of the water meter circuit board (2).

2. The wireless low-power smart water meter circuit board according to claim 1, characterized in that: The outer surface of the mold box (1) is fixedly connected with a fixing ear (9).

3. The wireless low-power smart water meter circuit board according to claim 1, characterized in that: The wireless communication module (4) adopts an NB-IoT communication module. The input terminal of the MCU chip (3) is electrically connected to the output terminal of the smart water meter, and the output terminal of the MCU chip (3) is electrically connected to the input terminal of the NB-IoT communication module.

4. The wireless low-power smart water meter circuit board according to claim 1, characterized in that: The top of the mold box (1) is provided with a positioning groove (8), the positioning ring (5) is located in the positioning groove (8), the positioning ring (5) is provided with a countersunk hole (10), a fixing bolt (11) is provided in the countersunk hole (10), and one end of the fixing bolt (11) is threaded into the positioning groove (8).

5. The wireless low-power smart water meter circuit board according to claim 1, characterized in that: The potting and separating assembly (6) includes multiple horizontal separating pieces (61) and multiple vertical separating pieces (62). The horizontal separating pieces (61) and the vertical separating pieces (62) are fixedly connected to the inner wall of the positioning ring (5). Multiple potting areas are formed between the multiple horizontal separating pieces (61) and the multiple vertical separating pieces (62). The silicone resin potting compound (7) is filled in the potting areas.

6. The wireless low-power smart water meter circuit board according to claim 5, characterized in that: An insulating sheet (12) is fixedly connected to the bottom of the horizontal dividing piece (61), and an insulating sheet (13) is fixedly connected to the bottom of the vertical dividing piece (62). Both the insulating sheet (12) and the insulating sheet (13) are tightly attached to the front of the water meter circuit board (2).

7. The wireless low-power smart water meter circuit board according to claim 5, characterized in that: The horizontal dividing strip (61) and the vertical dividing strip (62) are arranged vertically, and the vertical dividing strip (62) is provided with a clearance groove (14) for the horizontal dividing strip (61) to avoid.

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