NFC-based intelligent gas meter

Abstract

The utility model relates to gas meter technical field discloses an intelligent gas meter based on NFC, including protection shell, the outside front side fixedly connected with display screen of protection shell, the inside fixedly connected with anti -back flow mechanism of air inlet, the inside sliding connection has rubber pad of connection protection pipe, the inside fixedly connected with push limit stop of rubber pad, the bottom fixedly connected with telescopic column of push limit stop, the outside of telescopic column is covered telescopic spring, the outside sliding connection has limit shell of telescopic spring. In the utility model, after gas enters, push rubber pad and limit stop, drive telescopic column and telescopic spring, promote the opening of connection protection pipe, and gas is exported uniformly through the uniform flow support column, and enters transmission pipe and carries out detection, thereby ensuring that the gas to be detected does not appear backflow phenomenon, so that the gas is not confused, guaranteeing detection accuracy and improving gas detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of gas meter technology, and in particular to an NFC-based smart gas meter. Background Technology

[0002] With the development of society, NFC smart gas meters are being used more and more widely. An NFC smart gas meter is a smart gas metering device that integrates NFC technology. Through wireless communication and intelligent control technology, it realizes the automatic collection, transmission and management of gas usage data, and also supports NFC function to complete convenient interactive operations.

[0003] An NFC-enabled smart gas meter mainly consists of a protective casing, a display screen, a gas inlet, a gas outlet, and a transmission pipe. Based on a robust protective casing, the NFC smart gas meter tightly integrates all components, ensuring their coordinated operation. The gas inlet connects to the gas pipeline, and gas flows into the meter through the transmission pipe. A high-precision sensor measures the flow rate in real time, and the data is synchronously transmitted to the internal processor. The display screen intuitively presents information such as remaining gas volume and cumulative usage for easy user viewing. When a user brings an NFC-enabled device close to the meter, the processor interacts with the device through the built-in NFC communication module. After metering, the gas flows out from the gas outlet through the transmission pipe and continues to be supplied to the user's home.

[0004] In existing technologies, some NFC-based smart gas meter devices typically enter the transmission pipe from the gas inlet for detection. However, during the detection process, it is impossible to prevent the detected gas from flowing back and being mixed with undetected gas, which increases the complexity of the detection process, reduces the accuracy of gas detection, and reduces the efficiency of gas detection. To address the above problems, an NFC-based smart gas meter is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an NFC-based smart gas meter, which aims to improve the problem that some existing devices cannot prevent backflow of detected gas from being confused with undetected gas, resulting in inaccurate detection.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An NFC-based smart gas meter includes a protective casing. A display screen is fixedly connected to the front of the protective casing. A support plate is fixedly connected to the bottom of the protective casing. An air inlet is fixedly connected to the top of the protective casing. An air outlet is fixedly connected to the top of the protective casing. An anti-backflow mechanism is fixedly connected inside the air inlet. A protective mechanism is fixedly connected inside the protective casing. The anti-backflow mechanism includes a connecting protective tube. The outside of the connecting protective tube is fixedly connected to the inside of the air inlet. A rubber pad is slidably connected inside the connecting protective tube. A push-limiting block is fixedly connected inside the rubber pad. A telescopic column is fixedly connected to the bottom of the push-limiting block. A telescopic spring is sleeved on the outside of the telescopic column. A limiting shell is slidably connected to the outside of the telescopic spring. A uniform flow component is fixedly connected to the bottom of the limiting shell.

[0008] As a further description of the above technical solution:

[0009] The uniform flow component includes a uniform flow support column, the top of which is fixedly connected to the bottom of the limiting shell, and a transmission pipe is fixedly connected to the bottom of the connecting protection pipe. The air outlet end of the transmission pipe is fixedly connected to the bottom of the air outlet.

[0010] As a further description of the above technical solution:

[0011] The protective mechanism includes two filter protection columns, which are externally fixedly connected to the inside of the protective shell. Two cooling fans are fixedly connected to the inside of the protective shell, and multiple reinforcing columns are fixedly connected to the inside of the protective shell. A reinforcing plate is fixedly connected to the inner side of the protective shell.

[0012] As a further description of the above technical solution:

[0013] The top of the protective shell is slidably connected to two sealing rings, one of which is slidably connected to the outside of the air inlet, and the other is slidably connected to the outside of the air outlet.

[0014] As a further description of the above technical solution:

[0015] The protective shell has two limiting posts fixedly connected inside, and the two limiting posts have limiting components fixedly connected inside. An opening plate is rotatably connected to the rear side of the protective shell.

[0016] As a further description of the above technical solution:

[0017] The limiting component includes two rotating columns, which are slidably connected to the outside of the opening plate. A connecting limiting cylinder is fixedly connected to the outside of each rotating column. A limiting groove one and a limiting groove two are formed inside each limiting column.

[0018] As a further description of the above technical solution:

[0019] The outer side of the connecting and limiting cylinder is slidably connected to the inner side of the first limiting groove, and the outer side of the connecting and limiting cylinder is slidably connected to the inner side of the second limiting groove.

[0020] As a further description of the above technical solution:

[0021] A sensor is fixedly connected to the top of the protective shell, and a battery area is fixedly connected to the interior of the rear side of the protective shell.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the gas is connected to the air inlet through an external connecting pipe. After the gas enters, it pushes the rubber pad and the limiting block, drives the telescopic column and the telescopic spring, and promotes the opening of the connecting protection pipe. The gas is evenly output through the uniform flow support column and enters the transmission pipe for detection. After detection, the gas is output from the air outlet, thereby ensuring that the detected gas will not flow back, so that the gas is not mixed, ensuring the accuracy of detection, and improving the efficiency of gas detection.

[0024] 2. In this utility model, the filter protection column and the heat dissipation fan work together to keep the inside dry and prevent small animals from entering. At the same time, the reinforcing column and reinforcing plate are used to enhance the durability of the protective shell. The limiting column and the limiting groove ensure the limiting of the internal structure. The rotating column and the limiting groove work together to realize the quick board switch operation, which facilitates battery replacement and improves the ease of use of the equipment. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of an NFC-based smart gas meter proposed in this utility model.

[0026] Figure 2 This is a schematic diagram of the reinforcing plate of an NFC-based smart gas meter proposed in this utility model.

[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 This is a schematic diagram of the gas outlet structure of an NFC-based smart gas meter proposed in this utility model.

[0029] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0030] Figure 6 This is a schematic diagram of the reinforcing column of an NFC-based smart gas meter proposed in this utility model.

[0031] Figure 7 for Figure 6 Enlarged view of point C in the middle.

[0032] Legend:

[0033] 1. Protective shell; 2. Display screen; 3. Support plate; 4. Air inlet; 5. Air outlet; 6. Connecting protective tube; 7. Push limit block; 8. Rubber pad; 9. Telescopic column; 10. Telescopic spring; 11. Uniform flow support column; 12. Transmission tube; 13. Limiting shell; 14. Sealing ring; 15. Limiting column; 16. Limiting groove one; 17. Rotating column; 18. Limiting groove two; 19. Connecting limiting cylinder; 20. Filter protection column; 21. Cooling fan; 22. Opening plate; 23. Sensor; 24. Reinforcing column; 25. Reinforcing plate; 26. Battery area. Detailed Implementation

[0034] 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.

[0035] Reference Figures 1 to 3 This utility model provides an embodiment of an NFC-based smart gas meter, including a protective shell 1. The protective shell 1 is the main outer shell structure of the entire smart gas meter, which protects the internal structure and prevents damage to the internal structure from external physical impacts, dust, moisture, etc. The protective shell 1 is fixedly connected to the front of the outer shell 1. The protective shell 1 is the main outer shell structure of the entire smart gas meter, which protects the internal components and prevents damage to the internal precision parts from external physical impacts, dust, moisture, etc. The display screen 2 is connected to the control system of the gas meter through an internal circuit, and can receive and display data in real time. The bottom of the protective shell 1 is fixedly connected to a support plate 3, which mainly supports the entire gas meter. The top of the protective shell 1 is fixedly connected to an air inlet 4, which is the channel for gas to enter the smart gas meter. The top of the protective shell 1 is fixedly connected to an air outlet 5, and an anti-backflow mechanism is fixedly connected inside the air inlet 4.

[0036] The backflow prevention mechanism includes a connecting protection pipe 6, which is externally and fixedly connected to the inside of the air inlet 4 to ensure a tight connection with the external gas pipeline and prevent gas leakage. It is used to detect subsequent gas output. A sealing ring 14 is also provided on the outside of the air inlet 4 to further enhance the sealing performance. A rubber pad 8 is slidably connected inside the connecting protection pipe 6. The internal channel of the connecting protection pipe 6 allows gas to pass normally while providing space for the movement of components such as the rubber pad 8. The connecting protection pipe 6 forms the main frame of the backflow prevention mechanism and is fixedly connected to the inside of the air inlet 4. A push-limiting block 7 is fixedly connected inside the rubber pad 8 and installed inside the connecting protection pipe 6 to seal and prevent gas backflow. When gas enters normally, the rubber pad 8 is pushed open under air pressure, allowing the gas to pass smoothly. When backflow occurs, the rubber pad 8 will quickly reset under the elastic force of the telescopic spring 10, closing the channel and preventing gas backflow. The bottom of the push limit block 7 is fixedly connected to the telescopic column 9, which is installed inside the connecting protection pipe 6, and plays the role of sealing and blocking gas backflow. When gas enters normally, the rubber pad 8 is pushed open under the action of air pressure, allowing the gas to pass smoothly. When backflow occurs, the rubber pad 8 will quickly reset under the elastic force of the telescopic spring 10, closing the channel and preventing gas backflow. The fixed connection inside the rubber pad 8 is used to limit the movement direction and position of the rubber pad 8, ensuring that it can stably open and close within the connecting protection pipe 6. At the same time, the push limit block 7 also transmits the movement of the rubber pad 8 to the telescopic column 9, realizing the movement of the entire anti-backflow mechanism.

[0037] A telescopic column 9 is fitted with a telescopic spring 10 and is fixedly connected to the bottom of the push-limiting block 7. The telescopic column 9's function is to further transmit the movement of the rubber pad 8 to the telescopic spring 10, and achieve reset under the elastic force of the telescopic spring 10. A limit shell 13 is slidably connected to the outside of the telescopic spring 10. A uniform flow assembly is fixedly connected to the bottom of the limit shell 13. The uniform flow assembly includes a uniform flow support column 11, which supports and guides the flow of gas. The uniform flow support column 11 can evenly distribute the flow of gas, so that the gas passes through... The uniform flow support column 11 is fixedly connected to the bottom of the limiting shell 13 and to the outside of the telescopic spring 10 to limit the range of motion of the telescopic spring 10 and the telescopic column 9, preventing deviation and excessive extension during movement. The bottom of the connecting protection pipe 6 is fixedly connected to the transmission pipe 12. The transmission pipe 12 serves as the output channel of the uniform flow component to ensure that the gas can be smoothly transmitted from the uniform flow component to the gas outlet 5 and finally reach the user end. The gas outlet end of the transmission pipe 12 is fixedly connected to the bottom of the gas outlet 5. A protection mechanism is fixedly connected inside the protective shell 1.

[0038] Reference Figure 4 and Figure 5 The protective mechanism includes two filter pillars 20, fixedly connected inside the protective shell 1, which filter impurities and particulate matter in the gas and prevent small animals from entering. The two filter pillars 20 are externally fixedly connected inside the protective shell 1. Two cooling fans 21 are fixedly connected inside the protective shell 1 to dissipate heat from the electronic components and circuits inside the gas meter, keeping the interior dry. Multiple reinforcing pillars 24 are fixedly connected inside the protective shell 1 to enhance its structural strength. Since the gas meter is subject to external impacts during use, the reinforcing pillars 24 effectively disperse and absorb these impact forces. To prevent deformation and damage to the protective shell 1 and thus protect the internal components, a reinforcing plate 25 is fixedly connected to the inner side of the protective shell 1. The reinforcing plate 25 further enhances the structural strength and stability of the protective shell 1. Two sealing rings 14 are slidably connected to the top of the protective shell 1. The sealing rings 14 enhance the sealing performance of the air inlet 4 and the air outlet 5 to prevent gas leakage during the entry and exit process. The inner side of one sealing ring 14 is slidably connected to the outside of the air inlet 4, and the inner side of the other sealing ring 14 is slidably connected to the outside of the air outlet 5. Two limiting posts 15 are fixedly connected inside the protective shell 1 for installing and limiting components.

[0039] The limiting post 15 has a limiting groove 16 and a limiting groove 18 inside, which provide guidance and limiting for the movement of the limiting component, ensuring that the limiting component can work stably. The limiting component is fixedly connected inside the two limiting posts 15. The opening plate 22 is rotatably connected to the rear side of the protective shell 1. The limiting component includes two rotating posts 17. The outside of the rotating posts 17 is slidably connected inside the opening plate 22, which plays a supporting and connecting role. The limiting function is realized by cooperating with the limiting groove. The rotating posts 17 enter the inside of the limiting groove 16. When the connecting limiting cylinder 19 and the limiting groove 18 reach the same plane, they rotate into the inside of the limiting groove 18 for limiting, so that the opening plate 22 can open and close quickly. The outside of the two rotating posts 17 is slidably connected inside the opening plate 22. The outside of the rotating posts 17 is fixedly connected to the connecting limiting cylinder 19.

[0040] Reference Figure 6 and Figure 7The limiting post 15 has a limiting groove 16 and a limiting groove 18 inside. The external part of the limiting post 19 is slidably connected to the inside of the limiting groove 16, and the external part of the limiting post 19 is slidably connected to the inside of the limiting groove 18. The top of the protective shell 1 is fixedly connected to a sensor 23. Users can use NFC-enabled devices to approach the gas meter to perform data reading, recharge, query and other operations to realize intelligent gas management. The rear side of the protective shell 1 is fixedly connected to a battery area 26, which contains a battery to power the smart gas meter.

[0041] Working principle: First, the external connecting pipe is connected to the air inlet 4. After the gas enters, it pushes the rubber pad 8, which in turn drives the limit block 7 to move downwards. This pushes the telescopic column 9 and the telescopic spring 10 inside the limit shell 13, which is supported by the uniform flow support column 11. As a result, the connecting protection pipe 6 is opened, and the gas enters the interior of the connecting protection pipe 6. It is evenly output through the uniform flow support column 11 and enters the interior of the transmission pipe 12 for detection. It is then output through the air outlet 5. After the gas has been detected inside the transmission pipe 12, the anti-backflow mechanism prevents it from being mixed with undetected gas, thus improving the accuracy of the detection. After the detection is completed, it is displayed on the display screen 2. At the same time, the sensor 23 is connected to the external electronic device (NFC) to ensure timely data transmission and processing, effectively improving the efficiency and accuracy of gas detection.

[0042] Secondly, the filter protection column 20 and the cooling fan 21 work together to keep the interior dry. The use of the filter protection column 20 can reduce the entry of small animals. The use of the reinforcing column 24 and the reinforcing plate 25 reduces the damage to the protective shell 1. At the same time, the protective shell 1 has a limiting column 15 inside. The limiting column 15 has a limiting groove 16 and a limiting groove 18 inside. The rotating column 17 enters the interior of the limiting groove 16. When the connecting limiting column 19 and the limiting groove 18 reach the same plane, it rotates into the interior of the limiting groove 18 for limiting. This allows the opening plate 22 to open and close quickly, and the battery can be replaced quickly, improving the convenience of using the smart gas meter.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An NFC-based smart gas meter, comprising a protective casing (1), characterized in that: The protective shell (1) is fixedly connected to the front of the exterior with a display screen (2), the bottom of the protective shell (1) is fixedly connected to a support plate (3), the top of the protective shell (1) is fixedly connected to an air inlet (4), the top of the protective shell (1) is fixedly connected to an air outlet (5), the inside of the air inlet (4) is fixedly connected to an anti-backflow mechanism, and the inside of the protective shell (1) is fixedly connected to a protection mechanism. The anti-backflow mechanism includes a connecting protection tube (6), the outside of which is fixedly connected to the inside of the air inlet (4). A rubber pad (8) is slidably connected inside the connecting protection tube (6). A push limiting block (7) is fixedly connected inside the rubber pad (8). A telescopic column (9) is fixedly connected to the bottom of the push limiting block (7). A telescopic spring (10) is sleeved on the outside of the telescopic column (9). A limiting shell (13) is slidably connected to the outside of the telescopic spring (10). A uniform outflow component is fixedly connected to the bottom of the limiting shell (13).

2. The NFC-based smart gas meter according to claim 1, characterized in that: The uniform flow component includes a uniform flow support column (11), the top of which is fixedly connected to the bottom of the limiting shell (13), and the bottom of the connecting protection pipe (6) is fixedly connected to a transmission pipe (12), the air outlet end of which is fixedly connected to the bottom of the air outlet (5).

3. The NFC-based smart gas meter according to claim 1, characterized in that: The protective mechanism includes two filter protection columns (20), the two filter protection columns (20) are fixedly connected to the outside of the protective shell (1), two cooling fans (21) are fixedly connected to the inside of the protective shell (1), a plurality of reinforcing columns (24) are fixedly connected to the inside of the protective shell (1), and a reinforcing plate (25) is fixedly connected to the inner side of the protective shell (1).

4. The NFC-based smart gas meter according to claim 1, characterized in that: The top of the protective shell (1) is slidably connected to two sealing rings (14), one of which is slidably connected to the outside of the air inlet (4), and the other is slidably connected to the outside of the air outlet (5).

5. A smart gas meter based on NFC according to claim 1, characterized in that: The protective shell (1) has two fixedly connected limiting posts (15) inside, and the two limiting posts (15) have a fixedly connected limiting assembly inside. The protective shell (1) has an opening plate (22) rotatably connected to the rear side.

6. A smart gas meter based on NFC according to claim 5, characterized in that: The limiting assembly includes two rotating columns (17), the two rotating columns (17) are slidably connected to the inside of the opening plate (22), the rotating columns (17) are fixedly connected to a connecting limiting cylinder (19), and the limiting column (15) has a limiting groove one (16) and a limiting groove two (18) inside.

7. A smart gas meter based on NFC according to claim 6, characterized in that: The outer side of the connecting limiting cylinder (19) is slidably connected to the inner side of the first limiting groove (16), and the outer side of the connecting limiting cylinder (19) is slidably connected to the inner side of the second limiting groove (18).

8. A smart gas meter based on NFC according to claim 1, characterized in that: A sensor (23) is fixedly connected to the top of the protective shell (1), and a battery area (26) is fixedly connected to the rear interior of the protective shell (1).

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