NFC-based intelligent water meter well

Abstract

This application discloses an NFC-based smart water meter well, relating to the field of municipal water supply facility technology. The water meter well includes a well cover body, a central positioning hole at the center of the body, symmetrically distributed ventilation and expansion holes on both sides of the body, a chip fixing assembly with an embedded NFC chip, and reinforcing ribs staggered inside the body. The chip fixing assembly achieves quick chip installation and removal through a detachable mechanical structure, specifically including a fixing plate, a mounting base plate, an X / Y axis limiting plate, and a clamping assembly; the clamping assembly uses a rocker-driven cam to link the X / Y axis mating rod, achieving four-way locking of the NFC chip. Dust filters are embedded in the ventilation and expansion holes, and the reinforcing ribs are staggered at 45°. The NFC chip inside the water meter well adopts a modular and detachable design, significantly improving maintenance efficiency; simultaneously, the water meter well uses a ventilation and dustproof structure, and the reinforcing rib layout enhances the strength of the well cover and the balance of air pressure.

Description

Technical Field

[0001] This utility model relates to the field of municipal water supply facilities technology, specifically to an NFC-based smart water meter well. Background Technology

[0002] With the development of NFC technology, the number of read / write cycles for its products can reach over 100,000, and its calendar lifespan can reach over 10 years. Meanwhile, its cost has dropped significantly. Taking the M1 chip as an example, the core module cost is less than 5 RMB.

[0003] Smart manhole covers are an intelligent upgrade of traditional municipal manhole covers. By integrating IoT, sensors, and communication technologies, they enable location tracking, asset management, monitoring, and anomaly warnings for the manhole covers. Their core objective is to improve the safety, management efficiency, and emergency response capabilities of urban infrastructure. Currently used smart manhole covers embed NFC chips during the manufacturing process, which makes subsequent maintenance and disassembly cumbersome and difficult. Therefore, optimization and improvement are needed to address this issue. Utility Model Content

[0004] This utility model addresses the problems existing in the prior art by providing an NFC-based smart water meter well. It includes:

[0005] The manhole cover itself;

[0006] A central positioning hole is located at the center of the manhole cover body, and ventilation expansion holes are symmetrically arranged on both sides of the manhole cover body.

[0007] A chip fixing component is fitted inside the manhole cover body, and an NFC chip is fixedly installed inside the chip fixing component.

[0008] Reinforcing ribs are arranged alternately and parallel inside the manhole cover body.

[0009] Preferably, the chip fixing assembly includes a fixing plate and a mounting base plate. The mounting base plate is located at the center of the fixing plate, and an NFC chip is fixedly mounted above the mounting base plate. Y-axis limiting plates and X-axis limiting plates for limiting and fixing are respectively located on both sides of the NFC chip. The Y-axis limiting plates and X-axis limiting plates are both connected to a clamping assembly, which is located inside the fixing plate.

[0010] Preferably, the clamping assembly is provided with a rocker arm, which is located on the upper left side of the fixed plate. A mating cam is coaxially provided on the rear side of the center position of the rocker arm. A groove is provided on the rear side of the fixed plate. An X-axis mating rod and a Y-axis mating rod are slidably arranged inside the groove. The inner side of the X-axis mating rod is mated and connected with the X-axis limiting plate, and the Y-axis mating rod is mated and connected with the Y-axis limiting plate.

[0011] Preferably, both the X-axis mating rod and the Y-axis mating rod are provided with protrusions, which are respectively engaged and fixed with the X-axis limiting plate and the Y-axis limiting plate.

[0012] Preferably, the ventilation expansion hole is embedded with a dust filter with a pore size ≤ 1mm.

[0013] Preferably, the reinforcing ribs are staggered at a 45° angle and have a thickness of 1 / 3 of the thickness of the manhole cover body.

[0014] Preferably, the bottom surface of the manhole cover body is provided with an annular sealing groove, and a rubber sealing ring is embedded in the groove.

[0015] Preferably, the NFC chip is a passive tag with an operating frequency of 13.56MHz and a read / write distance of 0-5cm.

[0016] Preferably, the manhole cover body is made of ductile iron and coated with an epoxy anti-corrosion coating.

[0017] Preferably, the end of the rocker arm of the clamping assembly is provided with anti-slip texture, and the rocker arm rotation angle range is 0° to 90°.

[0018] Compared with existing technologies, this utility model provides an NFC-based smart water meter well, which has the following beneficial effects:

[0019] 1. The smart water meter well has optimized and improved the NFC chip fixing method. By setting up chip fixing components, the chip can be fully surrounded and fixed. At the same time, it is convenient for staff to operate during subsequent maintenance and disassembly, which effectively improves work efficiency.

[0020] 2. The water meter well has a built-in NFC chip, allowing meter readers to read data instantly using their mobile phones' NFC function, eliminating the need to open the well and improving data collection efficiency. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0022] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the chip fixing assembly in a specific embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the chip fixing assembly in a specific embodiment of the present invention.

[0025] In the diagram: 1. Manhole cover body; 2. Center positioning hole; 3. Ventilation expansion hole; 4. Chip fixing assembly; 5. Reinforcing rib; 101. Fixing plate; 102. Mounting base plate; 103. Y-axis limiting plate; 104. X-axis limiting plate; 105. Clamping assembly; 201. Matching cam; 202. X-axis matching rod; 203. Y-axis matching rod. Detailed Implementation

[0026] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0028] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0031] Example 1:

[0032] like Figure 1-3 As shown, the manhole cover body 1 of this smart water meter well is made of QT500-7 ductile iron and coated with an epoxy anti-corrosion coating. The manhole cover has a central positioning hole 2 in the center and two symmetrical ventilation expansion holes 3 on both sides. Stainless steel dust filters are embedded in the holes to prevent external dust from entering the water meter well and interfering with the internal electronic components. Eight reinforcing ribs 5 are arranged in an alternating pattern inside the manhole cover to enhance its overall strength. An annular sealing groove is provided on the bottom surface, and a neoprene rubber sealing ring is embedded to improve its overall sealing efficiency.

[0033] Furthermore, the chip fixing component 4 is installed on the inner wall of the manhole cover by bolts. The installation process of the NFC chip is as follows:

[0034] A passive NFC chip conforming to the ISO14443 protocol is placed on the mounting base plate 102. The rocker arm of the clamping assembly 105 is rotated clockwise, causing the mating cam 201 to rotate. The cam 201 pushes the X-axis mating rod 202 downward and the Y-axis mating rod 203 to the left, causing the X-axis limiting plate 104 and the Y-axis limiting plate 103 to limit and fix the NFC chip. When the rocker arm rotates to the 90° limit position, the chip is locked in four directions.

[0035] Example 2:

[0036] When this water meter well is used in different locations, its internal structure can be optimized to improve its air pressure balance and structural strength.

[0037] The dustproof filter screen with ventilation expansion holes 3 inside the water meter well adopts a double-layer design: the outer layer is a stainless steel mesh with a 1mm aperture, and the inner layer is a PET hydrophobic film, thereby improving the dustproof performance.

[0038] The reinforcing ribs 5 are radially distributed from the center of the manhole cover, with an 80mm spacing between adjacent ribs. Comparative tests show:

[0039] Gas pressure balance: When the pressure difference between the inside and outside of the well is >0.5 kPa, the vent will automatically adjust the gas pressure to within ±0.1 kPa;

[0040] Structural strength: The deformation of the manhole cover under a 25-ton load is ≤0.5mm, which is 2mm more than that of traditional manhole covers.

[0041] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0042] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0043] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. A smart water meter well based on NFC, characterized in that, include: The manhole cover itself; A central positioning hole is located at the center of the manhole cover body, and ventilation expansion holes are symmetrically arranged on both sides of the manhole cover body. A chip fixing component is fitted inside the manhole cover body, and an NFC chip is fixedly installed inside the chip fixing component. Reinforcing ribs are arranged alternately and parallel inside the manhole cover body.

2. The smart water meter well according to claim 1, characterized in that, The chip fixing assembly includes a fixing plate and a mounting base plate. The mounting base plate is located at the center of the fixing plate, and an NFC chip is fixedly mounted above the mounting base plate. Y-axis limiting plates and X-axis limiting plates for limiting and fixing are respectively located on both sides of the NFC chip. The Y-axis limiting plates and X-axis limiting plates are connected to a clamping assembly, which is located inside the fixing plate.

3. The smart water meter well according to claim 2, characterized in that, The clamping assembly is equipped with a rocker arm, which is located on the upper left side of the fixed plate. A mating cam is coaxially arranged on the rear side of the center of the rocker arm. A groove is provided on the rear side of the fixed plate. An X-axis mating rod and a Y-axis mating rod are slidably arranged inside the groove. The inner side of the X-axis mating rod is connected to the X-axis limiting plate, and the Y-axis mating rod is connected to the Y-axis limiting plate.

4. The intelligent water meter well according to claim 3, characterized in that, Both the X-axis mating rod and the Y-axis mating rod are provided with protrusions, which are respectively engaged and fixed with the X-axis limiting plate and the Y-axis limiting plate.

5. The smart water meter well according to claim 1, characterized in that, The ventilation expansion hole is embedded with a dust filter with a pore size of ≤1mm.

6. The smart water meter well according to claim 1, characterized in that, The reinforcing ribs are staggered at a 45° angle and have a thickness of 1 / 3 of the manhole cover body thickness.

7. The intelligent water meter well according to claim 1, characterized in that, The bottom surface of the manhole cover body is provided with an annular sealing groove, and a rubber sealing ring is embedded in the groove.

8. The smart water meter well according to claim 2, characterized in that, The NFC chip is a passive tag with an operating frequency of 13.56MHz and a read / write distance of 0–5cm.

9. The intelligent water meter well according to claim 1, characterized in that, The manhole cover body is made of ductile iron and coated with an epoxy anti-corrosion coating.

10. The smart water meter well according to claim 3, characterized in that, The end of the rocker arm of the clamping assembly is provided with anti-slip texture, and the rocker arm rotation angle range is 0° to 90°.

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