NB remote transmission diaphragm gas meter with safety function

Abstract

The utility model relates to the technical field of gas meter equipment, in particular to an NB remote transmission membrane type gas meter with a safety function, which comprises a meter box, an alarm module, a control module, a pressure sensing module and a monitoring platform are mounted in the meter box, a box door is rotatably mounted on the meter box, a waterproof component is mounted on the meter box, a first sealing groove is formed in the meter box, and a second sealing groove is formed in the meter box. The waterproof assembly comprises a first sealing strip, the first sealing strip is installed in the first sealing groove, and a first sealing plate inserted into the first sealing groove is installed on the box door. The NB remote transmission diaphragm gas meter has the effect of improving the safety of the NB remote transmission diaphragm gas meter with the safety function in the using process.

Description

Technical Field

[0001] This application relates to the field of gas meter equipment technology, and in particular to an NB remote transmission diaphragm gas meter with safety functions. Background Technology

[0002] The national gas industry has developed rapidly, and liquefied petroleum gas, natural gas, coal gas and other urban gas, as clean energy sources, have been widely used by urban residents. However, with the widespread use of gas, explosions, poisoning and fires caused by gas leaks have also occurred from time to time, which has increased the insecurity and instability of cities to some extent.

[0003] Gas safety has always been a crucial factor for gas companies and gas meter manufacturers. The most common traditional method of gas safety is to install gas meter alarms in homes, which are linked to the gas meter via wired or wireless Bluetooth transmission. In recent years, NB-IoT (NB-IoT communication) gas meters and alarms have emerged to meet monitoring needs. Most gas meters typically consist of a housing and a door. Opening and closing the door allows for reading the internal readings or performing maintenance. However, with most devices simply opening and closing the door and housing, water can easily seep into the housing through gaps in the door or leaking water pipes, damaging internal components. Utility Model Content

[0004] To improve the ease of operation of NB remote transmission diaphragm gas meters with safety features, this application provides an NB remote transmission diaphragm gas meter with safety features.

[0005] This application provides an NB remote diaphragm gas meter with safety features, employing the following technical solution:

[0006] A safety-featured NB remote-reading diaphragm gas meter includes a meter box, which houses an alarm module, a control module, a pressure sensing module, and a monitoring platform. A door is rotatably mounted on the meter box, and a waterproof component is installed on the meter box. The meter box has a first sealing groove, and the waterproof component includes a first seal strip installed in the first sealing groove. A first sealing plate inserted into the first sealing groove is installed on the door.

[0007] By adopting the above technical solution, the gas meter alarm, control system, pressure sensing system, and monitoring platform work together to ensure the safety and reliability of the gas meter during use. Adding a waterproof component to the meter box ensures that when the box door is closed, the first sealing plate is inserted into the first sealing groove, and the first sealing plate contacts and presses against the first sealing strip in the first sealing groove, enhancing the tightness and preventing rainwater or water from entering the meter box through the gap between the box and the door when it falls on the top of the box. This enhances the safety performance of the gas meter.

[0008] In one specific implementation scheme, a second sealing groove is provided on the meter box, a second seal is installed on the meter box, the second seal is disposed in the second sealing groove, and a second sealing plate is installed on the box door to abut against the second seal.

[0009] By adopting the above technical solution, when the cabinet door is closed on the meter box, the second sealing plate will fall into the second sealing groove and abut against the second sealing strip, preventing moisture from entering the meter box from the gap on the side near the connecting door, thus enhancing the waterproof performance of the meter box.

[0010] In one specific implementation scheme, the meter box has a third sealing groove and a slot. A slide rod is slidably installed on the meter box, with one end of the slide rod extending into the slot. A movable plate is installed at the end of the slide rod extending into the slot. A spring is sleeved on the slide rod, with one end of the spring connected to the movable plate and the other end connected to the meter box. One end of the slide rod extends into the third sealing groove, and a connecting plate is installed at the end of the slide rod extending into the third sealing groove. A third seal is installed on the connecting plate. A third sealing plate is installed on the door, with an inner groove for accommodating the third seal. An arc-shaped surface is formed at the end of the third sealing plate away from the door.

[0011] By adopting the above technical solution, when the door is closed on the meter box, the third sealing plate will push the third sealing strip and the connecting plate into the third sealing groove through the arc surface. When the third sealing plate moves to the point where the inner groove is opposite to the third sealing strip, the third sealing strip will fall into the inner groove on the third sealing plate, sealing the side of the meter box and enhancing waterproofness.

[0012] In one specific implementation scheme, the movable plate is a U-shaped plate, and a first protrusion is provided on the plate surface away from the slide rod. The first protrusion is an outwardly convex arc-shaped block. A buckle plate is installed on the box door to push the movable plate to move. The buckle plate is provided with a second protrusion that abuts against the first protrusion. The second protrusion is an outwardly convex arc-shaped block.

[0013] By adopting the above technical solution, when the second protrusion and the first protrusion come into contact, the second protrusion will push the movable plate away from the third sealing plate through the action of the arc surface. The movable plate 753 will also pull the third sealing strip into the third sealing groove, ensuring that the third sealing plate can be smoothly inserted into the side of the third sealing strip, and ensuring that the third sealing strip will smoothly slide into the inner groove on the third sealing plate and finally abut against the third sealing plate. When the third sealing strip abuts against the third sealing plate, the spring will tighten the movable plate and the buckle plate, so that the first protrusion and the second protrusion are fastened together, enhancing the connection between the box door and the meter box. This not only ensures the waterproofness between the box door and the meter box, but also allows the box door to stay tightly closed on the meter box, which is beneficial to enhancing the performance of the gas meter.

[0014] In one specific implementation scheme, the cross-section of the first sealing plate is trapezoidal, and the end of the first sealing plate away from the box door is smaller than the end closer to the box door.

[0015] By adopting the above technical solution, the cross-section of the first sealing plate is set to trapezoidal, which makes it easier for the first sealing plate to be inserted between the two first sealing strips. When the first sealing plate is inserted between the first sealing strips, the first sealing strips will deform and press against the first sealing plate as the thickness of the first sealing plate gradually increases. This enhances the waterproofness and also strengthens the tightness between the door and the meter box, so that the door can be tightly closed on the meter box.

[0016] In one specific implementation scheme, the meter box is provided with a vent hole, the vent hole is opened at an angle, and the opening on the inside of the meter box is higher than the opening on the outside of the meter box.

[0017] By adopting the above technical solution, ventilation holes are opened on the side wall of the meter box, which can enhance the heat dissipation performance inside the meter box, and the slanted ventilation holes can also prevent moisture from flowing into the meter box.

[0018] In one specific implementation, the alarm module includes a first wireless transmission module and a monitoring system, wherein the monitoring system is communicatively connected to the first wireless transmission module.

[0019] In one specific implementation, the pressure sensing module includes an in-gauge pressure sensor and a built-in valve.

[0020] In one specific implementation scheme, the control block includes a circuit board and a second wireless transmission module, both of which are mounted on the meter enclosure. The circuit board is equipped with an MCU, a temperature monitoring module, a flow monitoring module, an NB transmission module, and a circuit board pressure sensor. The second wireless transmission module is communicatively connected to the MCU, and the MCU is communicatively connected to the NB transmission module, the circuit board pressure sensor, the flow monitoring module, and the temperature monitoring module, respectively. The internal pressure sensor is communicatively connected to the MCU, and the MCU is communicatively connected to the built-in valve. The first wireless transmission module is communicatively connected to the second wireless transmission module, and the NB transmission module is communicatively connected to the monitoring platform.

[0021] By adopting the above technical solution, when the monitoring system detects an abnormal state, it transmits alarm information to the second wireless transmission module via the first wireless transmission module. After receiving the alarm information from the second wireless transmission module, the MCU shuts off the built-in valve and uploads the alarm information to the monitoring platform via the NB transmission module. The gas meter monitors the user's gas usage status through the flow monitoring module and temperature monitoring module. When abnormally high flow, abnormally low flow, continuous constant flow, or high temperature alarms occur, the flow monitoring module and temperature monitoring module transmit alarm information to the MCU upon detecting the abnormal state. After receiving the alarm information, the MCU shuts off the built-in valve and uploads the alarm information to the monitoring platform via the NB transmission module. The MCU receives the gas meter's internal pipeline pressure data transmitted by the internal pressure sensor and the atmospheric pressure value transmitted by the circuit board pressure sensor, and performs differential pressure calculation on the gas meter's internal pipeline pressure data and atmospheric pressure value. Based on the differential pressure calculation result, it determines whether an abnormally low or high pressure situation has occurred. When an abnormally low or high pressure situation exists, it shuts off the built-in valve and uploads the alarm information to the monitoring platform via the transmission module, thereby facilitating rapid control and transmission of gas usage and ensuring the safety of the gas meter during use.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. By utilizing the coordination between the gas meter alarm, control system, pressure sensing system, and monitoring platform, the gas meter is made safe and reliable to use. A waterproof component is added to the meter box. When the box door is closed, the first sealing plate is inserted into the first sealing groove, and the first sealing plate contacts and presses against the first sealing strip in the first sealing groove to enhance the tightness. This prevents rainwater or water falling on the top of the box from entering the box through the gap between the box and the door, thus enhancing the safety performance of the gas meter. Attached Figure Description

[0024] Figure 1This is a schematic diagram of a gas meter according to an embodiment of this application.

[0025] Figure 2 This is a schematic diagram of the gas meter after the door is opened, according to an embodiment of this application.

[0026] Figure 3 This is a schematic diagram of the main control panel in an embodiment of this application.

[0027] Figure 4 This is a schematic diagram of the first seal in an embodiment of this application.

[0028] Figure 5 This is a schematic diagram of the second seal in an embodiment of this application.

[0029] Figure 6 This is a schematic diagram of the third seal in an embodiment of this application.

[0030] Figure 7 This is a schematic diagram of the vent holes in an embodiment of this application.

[0031] Reference numerals: 1. Gauge box; 11. First sealing slot; 12. Second sealing slot; 13. Third sealing slot; 14. Slot; 15. Vent hole; 2. Alarm module; 21. First wireless transmission module; 22. Monitoring system; 3. Control module; 31. Circuit board; 32. MCU; 33. Temperature monitoring module; 34. Flow monitoring module; 35. NB transmission module; 36. Circuit board pressure sensor; 37. Second wireless transmission module; 4. Pressure sensing module ; 41. Internal pressure sensor; 42. Built-in valve; 5. Monitoring platform; 6. Box door; 61. Transparent window; 62. Handle; 7. Waterproof components; 71. First seal; 72. First sealing plate; 73. Second seal; 74. Second sealing plate; 751. Sliding rod; 752. Connecting plate; 753. Movable plate; 7531. First protrusion; 754. Spring; 755. Buckle plate; 7551. Second protrusion; 76. Third seal; 77. Third sealing plate. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0033] This application discloses an NB remote diaphragm gas meter with safety features, referring to... Figure 1 and Figure 2 It includes a meter box 1, a main control panel is fixedly installed inside the meter box 1, an alarm block 2, a control block 3, a pressure sensing block 4 and a monitoring platform 5 are installed on the main control panel, a door 6 is rotatably installed on the meter box 1, a transparent window 61 is embedded in the door 6, and a handle 62 is fixedly installed on the door 6.

[0034] Alarm module 2 includes a first wireless transmission module 21 and a monitoring system 22. The monitoring system 22 is communicatively connected to the first wireless transmission module 21. When a gas leak occurs, or when the temperature around the gas meter is too high, the monitoring system 22 can detect the abnormality. Alarm module 2 detects the abnormality and controls the power to be cut off.

[0035] Reference Figure 2 and Figure 3 The pressure sensing module 4 includes an internal pressure sensor 41 and a built-in valve 42. The control module 3 includes a circuit board 31 and a second wireless transmission module 37. Both the circuit board 31 and the second wireless transmission module 37 are fixedly mounted on the main control panel. The circuit board 31 is equipped with an MCU 32, a temperature monitoring module 33, a flow monitoring module 34, an NB transmission module 35, and a circuit board pressure sensor 36. The second wireless transmission module 37 is communicatively connected to the MCU 32. The MCU 32 is communicatively connected to the NB transmission module 35, the circuit board pressure sensor 36, the flow monitoring module 34, and the temperature monitoring module 33, respectively. The internal pressure sensor 41 is communicatively connected to the MCU 32, and the MCU 32 is communicatively connected to the built-in valve 42. The first wireless transmission module 21 is communicatively connected to the second wireless transmission module 37, and the NB transmission module 35 is communicatively connected to the monitoring platform 5.

[0036] When the monitoring system 22 detects an abnormal state, it transmits alarm information to the second wireless transmission module 37 via the first wireless transmission module 21. After receiving the alarm information from the second wireless transmission module 37, the MCU 32 shuts off the built-in valve 42 and uploads the alarm information to the monitoring platform 5 via the NB transmission module 35. The gas meter monitors the user's gas usage status through the flow monitoring module 34 and the temperature monitoring module 33. When abnormally high flow, abnormally low flow, continuous constant flow, or high temperature alarms occur, the flow monitoring module 34 and the temperature monitoring module 33 transmit alarm information to the MCU 32 upon detecting the abnormal state. After receiving the alarm information, the MCU 32 shuts off the built-in valve 42 and uploads the alarm information to the monitoring platform 5 via the NB transmission module 35. The MCU32 receives the gas meter pipeline pressure data transmitted by the internal pressure sensor 41 and the atmospheric pressure value transmitted by the circuit board pressure sensor 36, and performs differential pressure calculation on the gas meter pipeline pressure data and atmospheric pressure value; it determines whether there is an abnormal low pressure or high pressure situation based on the differential pressure calculation result; when there is an abnormal low pressure or high pressure situation, it cuts off the built-in valve 42 and uploads the alarm information to the monitoring platform 5 through the NB transmission module 35.

[0037] In this embodiment, the first wireless transmission module 21 and monitoring system 22 in alarm block 2; the circuit board 31, MCU 32, temperature monitoring module 33, flow monitoring module 34, NB transmission module 35, circuit board pressure sensor 36 and second wireless transmission module 37 in control block 3; the internal pressure sensor 41 and built-in valve 42 in pressure sensing block 4 and monitoring platform 5 are all existing technologies, and the working principle will not be described in this embodiment.

[0038] Reference Figure 2 , Figure 4 and Figure 5 A waterproof component 7 is installed on the meter box 1 to prevent water from entering the meter box 1 through the gap between the box door 6 and the meter box 1. The meter box 1 has a first sealing groove 11, which is also provided on the top and bottom plates of the meter box 1. The first sealing groove 11 is located on the closed surface of the meter box 1 and the box door 6. The waterproof component 7 includes a first sealing strip 71, which is fixedly installed in the first sealing groove 11 on the meter box 1. The top and bottom surfaces of the first sealing groove 11 are provided with the first sealing strip 71, and the cross-section of the first sealing strip 71 has an outwardly convex arc-shaped surface. A first sealing plate 72 is fixedly installed on the box door 6 and inserted into the first sealing groove 11. The cross-section of the first sealing plate 72 is trapezoidal, and the end of the first sealing plate 72 away from the box door 6 is smaller than the end closer to the box door 6.

[0039] When the door 6 is closed on the meter box 1, the first sealing plate 72 is inserted into the first sealing groove 11. The cross-section of the first sealing plate 72 is set as a trapezoid to facilitate the insertion of the first sealing plate 72 between the two first sealing strips 71. When the first sealing plate 72 is inserted between the first sealing strips 71, the first sealing strips 71 will deform and press against the first sealing plate 72 because the thickness of the first sealing plate 72 gradually increases. This enhances the waterproofness and also strengthens the tightness between the door 6 and the meter box 1, so that the door 6 can be tightly closed on the meter box 1. This prevents rainwater or water from falling on the top of the meter box 1 from entering the meter box 1 through the gap between the meter box 1 and the door 6, thereby enhancing the safety performance of the gas meter.

[0040] The meter box 1 is provided with a second sealing groove 12, which is set on the vertical side plate connecting the meter box 1 and the door 6. A second sealing strip 73 is fixedly installed in the second sealing groove 12 of the meter box 1. The second sealing strip 73 is made of soft rubber material. A second sealing plate 74 is fixedly installed on the door 6, which abuts against the second sealing strip 73.

[0041] When the door 6 is closed on the watch case 1, the second sealing plate 74 will fall into the second sealing groove 12 and abut against the second sealing strip 73, preventing moisture from entering the watch case 1 from the gap near the door 6, thus enhancing the waterproof performance of the watch case 1.

[0042] Reference Figure 2 and Figure 6 The meter box 1 has a third sealing groove 13 and a slot 14. The third sealing groove 13 is located on the inner wall of the meter box 1. A slide rod 751 is slidably installed on the meter box 1. One end of the slide rod 751 extends into the third sealing groove 13, and the other end extends into the slot 14. A movable plate 753 is fixedly installed at the end of the slide rod 751 that extends into the slot 14. A spring 754 is sleeved on the slide rod 751. One end of the spring 754 is fixedly connected to the movable plate 753, and the other end is fixedly connected to the meter box 1. The movable plate 753 is a U-shaped plate. A first protrusion 7531 is provided on the side of the movable plate 753 away from the slide rod 751. The first protrusion 7531 is an outwardly convex arc-shaped block. A buckle plate 755 is fixedly installed on the door 6. A second protrusion 7551 is provided on the buckle plate 755. The second protrusion 7551 is an outwardly convex arc-shaped block. A connecting plate 752 is fixedly installed at one end of the sliding rod 751 that extends into the third sealing groove 13. A third sealing strip 76, made of rubber, is fixedly installed on the connecting plate 752. A third sealing plate 77 is fixedly installed on the door 6. The third sealing plate 77 has an arc-shaped inner groove for placing the third sealing strip 76. The end of the third sealing plate 77 away from the door 6 has an arc-shaped surface.

[0043] When the door 6 is closed on the meter box 1, the third sealing plate 77, through its arc-shaped surface, pushes the third sealing strip 76 and the connecting plate 752 into the third sealing groove 13. When the second protrusion 7551 and the first protrusion 7531 come into contact, through the action of the arc-shaped surface, the second protrusion 7551 pushes the movable plate 753 away from the third sealing plate 77, and the movable plate 753 also pulls the third sealing strip 76 into the third sealing groove 13. When the second protrusion 7551 passes the first protrusion 7531, the third sealing strip 76... The three seals 76 will slide into the groove on the third sealing plate 77 and eventually abut against the third sealing plate 77, sealing the side of the meter box 1 and enhancing waterproofing. At the same time, the spring 754 will pull the movable plate 753 and the buckle plate 755 tight, so that the first protrusion 7531 and the second protrusion 7551 are fastened to each other, enhancing the connection between the door 6 and the meter box 1. This not only ensures the waterproofing between the door 6 and the meter box 1, but also allows the door 6 to stay tightly closed on the meter box 1, which is beneficial to enhancing the performance of the gas meter.

[0044] Reference Figure 1 and Figure 7 A vent hole 15 is provided on the side wall of the meter box 1. The vent hole 15 is opened at an angle, and the opening on the inside of the meter box 1 is higher than the opening on the outside of the meter box 1.

[0045] Ventilation holes 15 are opened on the side wall of the meter box 1 to enhance the heat dissipation performance inside the meter box 1, and the slanted ventilation holes 15 can also prevent moisture from flowing into the meter box 1.

[0046] The implementation principle of this application embodiment is as follows: When the monitoring system 22 detects an abnormal state, it transmits alarm information to the second wireless transmission module 37 through the first wireless transmission module 21. After receiving the alarm information from the second wireless transmission module 37, the MCU 32 shuts off the built-in valve 42 and uploads the alarm information to the monitoring platform 5 through the NB transmission module 35. The gas meter monitors the user's gas usage status through the flow monitoring module 34 and the temperature monitoring module 33. When abnormally high flow, abnormally low flow, continuous constant flow, or high temperature alarms occur, the flow monitoring module 34 and the temperature monitoring module 33 transmit alarm information to the MCU 32 upon detecting the abnormal state. After receiving the alarm information, the MCU 32 shuts off the built-in valve 42 and uploads the alarm information to the monitoring platform 5 through the NB transmission module 35. The MCU32 receives the gas meter's internal pipeline pressure data transmitted by the internal pressure sensor 41 and the atmospheric pressure value transmitted by the circuit board pressure sensor 36. It then calculates the pressure difference between the gas meter's internal pipeline pressure data and the atmospheric pressure value. Based on the pressure difference calculation results, it determines whether there is an abnormally low or high pressure situation. When an abnormally low or high pressure situation exists, it shuts off the built-in valve 42 and uploads the alarm information to the monitoring platform 5 through the NB transmission module 35, which helps to improve the safety performance of the gas meter during use.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A NB remote transmission diaphragm gas meter with security function, characterized in that: The utility model provides a kind of meter box, which comprises an alarm module (2), a control module (3), a pressure sensing module (4) and a monitoring platform (5) installed in the meter box (1), a door (6) rotatably installed on the meter box (1), a waterproof assembly (7) installed on the meter box (1), a first sealing groove (11) formed in the meter box (1), and a first sealing strip (71) installed in the first sealing groove (11).

2. The NB remote transmission diaphragm gas meter with security function according to claim 1, characterized in that: A second sealing groove (12) is formed in the meter box (1), a second sealing strip (73) is installed on the meter box (1), the second sealing strip (73) is arranged in the second sealing groove (12), and a second sealing plate (74) is installed on the door (6) and abuts against the second sealing strip (73).

3. The NB remote transmission diaphragm gas meter with security function according to claim 1, characterized in that: A third sealing groove (13) and a slot (14) are formed in the meter box (1), a sliding rod (751) is slidably installed on the meter box (1), one end of the sliding rod (751) extends into the slot (14), an activity plate (753) is installed on the end of the sliding rod (751) extending into the slot (14), a spring (754) is sleeved on the sliding rod (751), one end of the spring (754) is connected with the activity plate (753), and the other end of the spring (754) is connected with the meter box (1); one end of the sliding rod (751) extends into the third sealing groove (13), a connecting plate (752) is installed on the end of the sliding rod (751) extending into the third sealing groove (13), and a third sealing strip (76) is installed on the connecting plate (752); a third sealing plate (77) is installed on the door (6), an inner groove is formed in the third sealing plate (77) to accommodate the third sealing strip (76), and an arc surface is formed on the end of the third sealing plate (77) away from the door (6).

4. The NB remote transmission diaphragm gas meter with security function according to claim 3, characterized in that: The activity plate (753) is a U-shaped plate, a first protrusion (7531) is arranged on the plate surface away from the sliding rod (751), and the first protrusion (7531) is an outwardly protruding arc block; a buckle plate (755) is installed on the door (6) to push the activity plate (753) to move, a second protrusion (7551) is arranged on the buckle plate (755) to abut against the first protrusion (7531), and the second protrusion (7551) is an outwardly protruding arc block.

5. The NB remote transmission membrane gas meter with security function according to claim 1, characterized in that: The first sealing plate (72) has a trapezoidal cross section, and the end of the first sealing plate (72) away from the door (6) is smaller than the end of the first sealing plate (72) close to the door (6).

6. The NB remote transmission membrane gas meter with security function according to claim 1, characterized in that: A ventilation hole (15) is formed in the meter box (1), the ventilation hole (15) is obliquely formed, and the aperture on the inner side of the meter box (1) is higher than the aperture on the outer side of the meter box (1).

7. The NB remote transmission membrane gas meter with security function according to claim 1, characterized in that: The alarm module (2) comprises a first wireless transmission module (21) and a monitoring system (22), and the monitoring system (22) is in communication connection with the first wireless transmission module (21).

8. The NB remote transmission diaphragm gas meter with security function according to claim 7, characterized in that: The pressure sensing assembly (4) comprises an internal pressure sensor (41) and a built-in valve (42).

9. The NB remote transmission diaphragm gas meter with security function according to claim 8, characterized in that: The control assembly (3) comprises a circuit board (31) and a second wireless transmission module (37), both of which are installed on the meter box (1), and the circuit board (31) is provided with an MCU (32), a temperature monitoring module (33), a flow monitoring module (34), an NB transmission module (35) and a circuit board pressure sensor (36); the second wireless transmission module (37) is in communication connection with the MCU (32), and the MCU (32) is in communication connection with the NB transmission module (35), the circuit board pressure sensor (36), the flow monitoring module (34) and the temperature monitoring module (33) respectively; the internal pressure sensor (41) is in communication connection with the MCU (32), and the MCU (32) is in communication connection with the built-in valve (42); the first wireless transmission module (21) is in communication connection with the second wireless transmission module (37), and the NB transmission module (35) is in communication connection with the monitoring platform (5).

Images