Anti-leakage Internet of Things intelligent gas meter

Abstract

The utility model belongs to the technical field of intelligent gas meters, and particularly discloses a leakproof internet-of-things intelligent gas meter which comprises a base meter and a main control circuit board. The base meter comprises a lower shell and an upper shell, a limiting column is arranged at the vertex angle of the inner wall of the lower shell, a guide column is arranged at the position, corresponding to the limiting column, of the upper shell, an installation frame is arranged at the position, close to one side, of the bottom end in the lower shell, and a screw is arranged in the installation frame to fixedly install a main control circuit board. A plurality of bearing blocks are irregularly arranged in the mounting frame, the height of the bearing blocks abuts against the end face of the main control circuit board, a partition block is arranged on the side edge of the mounting frame, a sealing matching cover and a battery mounting bin are arranged on the two sides of the upper end of the partition block respectively, and the sealing matching cover is arranged at the upper end of the main control circuit board; a plurality of connecting holes are formed in the sealing matching cover in a penetrating mode and located in the upper end of the main control circuit board.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent gas meters, in particular to a leakage-proof Internet of Things intelligent gas meter. Background Art

[0002] With the continuous advancement of science and technology, gasification projects have developed rapidly. Gas metering is currently mainly carried out by gas meters. At present, there are two mainstream gas meters on the market, one is the traditional mechanical diaphragm gas meter, and the other is the prepaid diaphragm gas meter. The mechanical diaphragm gas meter is measured by a mechanical roller. The mechanical roller is added according to the amount of gas used. Every time a unit is used, the roller counts one, and finally the gas volume measurement record is realized. The advantages of mechanical gas meters are reliable measurement and stable quality. The disadvantages are that meter reading is troublesome. Manual door-to-door meter reading is required, and gas companies need to invest a lot of financial and human resources. The prepaid diaphragm gas meter is improved on the basis of the traditional mechanical type. On the basis of the original, electronic metering, prepayment and display functions are added, which can display the current working status of the gas meter. The prepaid method of buying gas first and then using gas can greatly reduce the cost of gas companies and labor. In order to standardize the use of natural gas, and to efficiently utilize and monitor natural gas, it is necessary to test natural gas.

[0003] The gas meter base meter is an important component of the gas meter. Usually, the gas meter head is integrated with gas metering-related structures and auxiliary functional structures for safe gas use to make the gas meter more intelligent and safe. In order to prevent water vapor, smoke, etc. from corroding the internal electronic components and battery of the gas meter, it is necessary to adopt sealing measures for the smart gas meter control box to isolate the electronic components from the relatively harsh working environment. Utility Model Content

[0004] The purpose of the utility model is to provide a leak-proof Internet of Things smart gas meter to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-leakage Internet of Things smart gas meter, comprising a base meter and a main control circuit board of NB-IoT based on OpenCPU technology; the base meter comprises a metering component, a smart head and an LCD display screen; the main control circuit board is integrated and installed in the smart head; the base meter also comprises a reed switch counter and a motor valve coupled to the metering component; the base meter comprises a lower shell and an upper shell, the upper shell is detachably mounted on the lower shell, a limit column is arranged at the top corner of the inner wall of the lower shell, and a corresponding limit column is arranged on the upper shell A guide column is provided at the position of the positioning column, and an installation frame is provided near one side of the inner bottom end of the lower shell body, and screws are provided in the installation frame to fix the main control circuit board, and a plurality of supporting blocks are irregularly arranged inside the installation frame, and the height of the supporting blocks is against the end surface of the main control circuit board, and a partition block is provided on the side of the installation frame, and a plurality of through holes are provided on the partition block, and a sealing fitting cover and a battery installation compartment are respectively provided on both sides of the upper end of the partition block, and the sealing fitting cover is arranged at the upper end of the main control circuit board, and a plurality of connecting holes are penetrated on the sealing fitting cover, and the connecting holes are located at the upper end of the main control circuit board.

[0006] Preferably, a limiting groove is provided on the top end side wall of the lower shell body close to the connecting end, and an extension frame corresponding to the limiting groove is provided on the bottom end wall of the upper shell body towards the lower shell body.

[0007] Preferably, a groove is provided on the outer side wall of the extension frame, a sealing ring is clamped in the groove, the outer side edge of the sealing ring is conical, and the sealing ring is made of rubber.

[0008] Preferably, the main control circuit board includes a NB-IoT module circuit supporting OpenCPU, a metering sampling circuit coupled between the reed switch counter and the NB-IoT module circuit supporting OpenCPU to convert mechanical collection data into a level signal and input it into the NB-IoT module circuit supporting OpenCPU, and a valve drive circuit coupled between the NB-IoT module circuit supporting OpenCPU and the motor valve to convert the output valve drive current;.

[0009] Preferably, the main control circuit board includes a menu button for manual wake-up / reporting coupled to a NB-IoT module circuit supporting OpenCPU, an infrared circuit for supporting local parameter configuration and firmware upgrade of the meter, an antenna module and ESIM card circuit for remote communication, a power supply circuit for power supply, and a power supply voltage monitoring circuit for overall voltage monitoring.

[0010] Preferably, the main control circuit board also includes a system for gas leak monitoring, including a sampling module, the sampling module is connected to the NB-IoT module circuit of OpenCPU, the main body of the sampling module is a gas concentration collection meter, which is installed on the gas pipeline. The sampling module detects the gas concentration passing through the pipeline, converts the sampling signal into a voltage signal and transmits it to the NB-IoT module circuit of OpenCPU through a cable. The NB-IoT module circuit of OpenCPU analyzes the input voltage signal and outputs it to the display alarm module according to the preset value of the sampling module.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model is provided with an upper shell and a lower shell that are clamped together, and a rubber sealing ring is also provided at the clamping position to ensure that the base meter as a whole is in a completely sealed state, isolating harmful gases and water vapor, and improving the service life of the gas meter; the utility model is provided with a sealing matching cover in the shell to strengthen the sealing protection of the main control circuit board installed inside, the main control circuit board is installed on the installation frame, and a partition block with a through hole is fixed on one side of the installation frame, and a connecting hole is also provided on the sealing matching block. The connection hole and the partition block can optimize the separation and connection of the wires, facilitate the connection of electronic components with the main control circuit board, and avoid the entanglement and crossing of too many wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the base meter of the utility model gas meter;

[0013] Figure 2 This is an exploded view of the base shell of the gas meter of the utility model;

[0014] Figure 3 This is a schematic circuit framework diagram of the main control circuit board of the utility model;

[0015] Figure 4 This is the circuit schematic diagram of the gas leakage monitoring system of the utility model.

[0016] In the figure: 1. base meter; 11. lower shell; 1101. limit groove; 1102. limit column; 1103. installation frame; 1104. support block; 1105. partition block; 12. upper shell; 1201. extension frame; 1202. guide column; 1203. sealing ring; 13. sealing mating cover; 1301. connecting hole; 14. battery installation compartment; 2. metering component; 3. LCD display; 4. smart head; 5. main control circuit board. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] See also Figure 1-4The utility model provides a technical solution: a leak-proof Internet of Things smart gas meter, comprising a base meter 1, and also comprising a main control circuit board 5 of NB-IoT based on OpenCPU technology; the base meter 1 comprises a metering component 2, a smart head 4 and an LCD display screen 3; the main control circuit board 5 is integrated and installed in the smart head 4; the base meter 1 also comprises a reed switch counter and a motor valve coupled to the metering component 2; the base meter 1 comprises a lower shell 11 and an upper shell 12, the upper shell 12 is detachably mounted on the lower shell 11, a limiting column 1102 is arranged at the top corner of the inner wall of the lower shell 11, a guide column 1202 is arranged at the position corresponding to the limiting column 1102 on the upper shell 12, the lower An installation frame 1103 is provided near one side of the inner bottom end of the shell 11, and screws are provided in the installation frame 1103 to fix the main control circuit board 5. A plurality of supporting blocks 1104 are irregularly arranged inside the installation frame 1103, and the height of the supporting blocks 1104 is against the end surface of the main control circuit board 5. A partition block 1105 is provided on the side of the installation frame 1103, and a plurality of through holes are provided on the partition block 1105. A sealing fitting cover 13 and a battery installation compartment 14 are respectively provided on both sides of the upper end of the partition block 1105, and the sealing fitting cover 13 is provided at the upper end of the main control circuit board 5. A plurality of connecting holes 1301 are penetrated through the sealing fitting cover 13, and the connecting holes 1301 are located at the upper end of the main control circuit board 5.

[0021] Furthermore, a limiting groove 1101 is provided on the top side wall of the lower shell 11 close to the connection end, and an extension frame 1201 corresponding to the limiting groove 1101 is provided on the bottom wall of the upper shell 12 facing the lower shell 11 .

[0022] Furthermore, a groove is provided on the outer side wall of the extension frame 1201, and a sealing ring 1203 is clamped in the groove. The outer side edge of the sealing ring 1203 is conical, and the sealing ring 1203 is made of rubber.

[0023] Furthermore, the main control circuit board 5 includes a NB-IoT module circuit supporting OpenCPU, a metering sampling circuit coupled between the reed switch counter and the NB-IoT module circuit supporting OpenCPU to convert mechanical collected data into a level signal and input it into the NB-IoT module circuit supporting OpenCPU, and a valve drive circuit coupled between the NB-IoT module circuit supporting OpenCPU and the motor valve to convert the output valve drive current;.

[0024] Furthermore, the main control circuit board 5 includes a menu button for manual wake-up / reporting coupled to the NB-IoT module circuit supporting OpenCPU, an infrared circuit for supporting the meter to perform local parameter configuration and firmware upgrade, an antenna module and ESIM card circuit for remote communication, a power supply circuit for power supply, and a power supply voltage monitoring circuit for overall voltage monitoring.

[0025] Furthermore, the main control circuit board 5 also includes a system for gas leak monitoring, including a sampling module, the sampling module is connected to the NB-IoT module circuit of OpenCPU, the main body of the sampling module is a gas concentration acquisition meter, which is installed on the gas pipeline, the sampling module detects the gas concentration passing through the pipeline, converts the sampling signal into a voltage signal and transmits it to the NB-IoT module circuit of OpenCPU through a cable, the NB-IoT module circuit of OpenCPU analyzes the input voltage signal, and outputs it to the display alarm module according to the preset value of the sampling module, the display alarm module includes resistors R18, R19, R20, R21 and light-emitting LEDs 1 and 2 , light-emitting LED3, light-emitting LED4 and buzzer alarm, the voltage signal output by the sampling module is analyzed by the NB-IoT module circuit of OpenCPU and compared with the preset value of the sampling module. The light-emitting LED is a multi-color light-emitting diode. The display alarm module compares the preset value with the collected value. When the sampling value is equal to the preset value, it indicates that the gas pipeline is in a sealed state without leakage, and the LED displays a green light state. When the sampling value is slightly larger than the preset value, it indicates that the gas pipeline is in a slight gas concentration. The LED displays a yellow light state. When the sampling value is much larger than the preset value, it indicates that the gas concentration in the gas pipeline is high. The LED displays a red light state and the buzzer alarm is activated at the same time to remind the user of gas leakage.

[0026] The utility model provides a leak-proof Internet of Things smart gas meter. The utility model is provided with an upper shell 12 and a lower shell 11 that are clamped together. A rubber sealing ring 1203 is also provided at the clamping position to ensure that the base meter 1 is in a completely sealed state as a whole, isolate harmful gases and water vapor, and increase the service life of the gas meter; the utility model is provided with a sealing matching cover 13 in the shell to strengthen the sealing protection of the main control circuit board 5 installed inside, the main control circuit board 5 is installed on the installation frame 1103, and a partition block 1105 with a through hole is fixed on one side of the installation frame 1103. A connecting hole 1301 is also provided on the sealing matching block. The connection hole 1301 and the partition block 1105 can optimize the separation and connection of wires, facilitate the connection of electronic components with the main control circuit board 5, and avoid excessive wires from being entangled and crossed.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A leak-proof IoT smart gas meter, characterized in that: The invention comprises a base meter (1) and a main control circuit board (5) of NB-IoT based on OpenCPU technology; the base meter (1) comprises a metering component (2), an intelligent head (4) and an LCD display screen (3); the main control circuit board (5) is integrated and installed on the intelligent head (4); the base meter (1) also comprises a reed switch counter and a motor valve coupled to the metering component (2); the base meter (1) comprises a lower shell (11) and an upper shell (12); the upper shell (12) is detachably installed on the lower shell (11); a limiting column (1102) is arranged at the top corner of the inner wall of the lower shell (11); a guide column (1202) is arranged on the upper shell (12) at a position corresponding to the limiting column (1102); the inner bottom end of the lower shell (11) is close to one side An installation frame (1103) is provided, wherein screws are arranged inside the installation frame (1103) to fix and install the main control circuit board (5), a plurality of support blocks (1104) are irregularly arranged inside the installation frame (1103), the height of the support blocks (1104) is against the end surface of the main control circuit board (5), a partition block (1105) is provided on the side of the installation frame (1103), a plurality of through holes are provided on the partition block (1105), a sealing matching cover (13) and a battery installation compartment (14) are respectively provided on both sides of the upper end of the partition block (1105), the sealing matching cover (13) is arranged on the upper end of the main control circuit board (5), a plurality of connection holes (1301) are penetrated through the sealing matching cover (13), and the connection holes (1301) are located at the upper end of the main control circuit board (5).

2. The leak-proof IoT smart gas meter according to claim 1, characterized in that: A limiting groove (1101) is provided on the top side wall of the lower shell (11) close to the connection end, and an extension frame (1201) corresponding to the limiting groove (1101) is provided on the bottom wall of the upper shell (12) facing the lower shell (11).

3. The leak-proof IoT smart gas meter according to claim 2, characterized in that: A groove is provided on the outer wall of the extension frame (1201), a sealing ring (1203) is clamped in the groove, the outer side of the sealing ring (1203) is conical, and the sealing ring (1203) is made of rubber.

4. The leak-proof IoT smart gas meter according to claim 1, characterized in that: The main control circuit board (5) includes an NB-IoT module circuit supporting OpenCPU, a metering sampling circuit coupled between a reed switch counter and the NB-IoT module circuit supporting OpenCPU and converting mechanical collected data into a level signal and inputting the signal into the NB-IoT module circuit supporting OpenCPU, and a valve driving circuit coupled between the NB-IoT module circuit supporting OpenCPU and a motor valve and used for converting an output valve driving current.

5. The leak-proof IoT smart gas meter according to claim 1, characterized in that: The main control circuit board (5) includes a menu button for manual wake-up / reporting coupled to an NB-IoT module circuit supporting OpenCPU, an infrared circuit for supporting a meter to perform local parameter configuration and firmware upgrade, an antenna module and an ESIM card circuit for remote communication, a power supply circuit for power supply, and a power supply voltage monitoring circuit for overall voltage monitoring.

6. The leak-proof IoT smart gas meter according to claim 1, characterized in that: The main control circuit board (5) also includes a system for gas leakage monitoring, including a sampling module, the sampling module is connected to the NB-IoT module circuit of OpenCPU, the main body of the sampling module is a gas concentration acquisition meter, which is installed on the gas pipeline, the sampling module detects the concentration of the gas passing through the pipeline, converts the sampling signal into a voltage signal and transmits it to the NB-IoT module circuit of OpenCPU through a cable, the NB-IoT module circuit of OpenCPU analyzes the input voltage signal, and outputs it to the display alarm module according to the preset value of the sampling module.

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