Low-power-consumption remote water meter based on 4G-Cat.1 technology

Abstract

The invention relates to the technical field of remote water meters, and discloses a low-power-consumption remote water meter based on the 4G-Cat.1 technology. The low-power-consumption remote water meter comprises a helical vane type water meter, a sealing kit is assembled in the helical vane type water meter, a sealing rubber ring is fixed to the inner side wall of a sealing felt, and an annular air bag is fixedly installed in the sealing rubber ring; a first sealing rubber ring is fixedly installed on the outer side of the annular air bag, a first expansion sealing rubber layer is fixedly arranged on the top of the inner side of the sealing rubber ring, a second expansion sealing rubber layer is fixedly arranged at the bottom of the inner side of the sealing rubber ring, and water can be reasonably utilized to promote the expansion sealing rubber layer to expand; the expanded sealant can effectively prevent water from permeating, the expanded expansion sealant layer is used for generating extrusion force on the annular air bag, the sealing performance of the sealing rubber ring is further enhanced, the waterproof protection capacity is improved, and self water seepage remediation is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of remote water meters, and in particular to a low-power remote water meter based on 4G-Cat.1 technology. Background Art

[0002] 4G.Cat.1 does not require software and hardware upgrades for base stations in network construction, and the network coverage cost is low. At the same time, the chip cost is also low. After system optimization, the integration is higher, the module hardware architecture is simpler, and the peripheral hardware cost is lower. 4G.Cat.1 technology will be increasingly widely used in the field of Internet of Things due to its advantages of low power consumption, low cost, wide coverage and easy deployment.

[0003] The remote water meter is composed of an ordinary mechanical water meter plus an electronic data collection and transmission module. It can record and save the user's water consumption in real time. Each water meter has a unique code. When the smart water meter receives the meter reading instruction, it can upload the water meter data to the management system instantly through wireless transmission technology. It adopts wireless transmission and telecommunication spread spectrum broadband and narrowband communication technology, with strong anti-interference ability, high receiving sensitivity and strong penetration ability.

[0004] An ultra-low power consumption remote water meter with application number CN201922016686.4 has good sealing performance, ensuring that water does not enter the water meter position, and permanently keeping the reading clear without turning black. The meter body and valve are all arranged in an integrated housing, which can ensure that devices such as the microcontroller and power supply module are not damaged by water leakage. The meter body adopts a photoelectric direct-reading water meter, and the valve is installed with a water meter lock valve. This valve is opened with a special key for convenient unified management.

[0005] When the existing remote water meter is in use, it is usually covered with a protective cover to achieve preliminary waterproofing, and a waterproof gasket is installed between the electronic components and the shell of the water meter to add an additional waterproof layer. High-quality rubber sealing rings are used at the interfaces and connections of the water meter to prevent moisture from penetrating through the gaps. However, as the use time increases, the rubber sealing ring is long-term affected by ultraviolet radiation, temperature changes and oxidation, resulting in material aging and performance degradation, causing the rubber to become hard and brittle. Therefore, in a high humidity environment, moisture or water vapor will invade, causing a short circuit and damaging the electronic components of the water meter. The existing solution is to manually inspect and replace them. Therefore, once moisture penetrates into the electronic components and cannot be detected in time, it will inevitably cause damage to the electronic components. In this way, not only the sealing ring needs to be replaced, but also the electronic components, which increases the subsequent maintenance cost and affects the normal operation of the water meter.

[0006] Therefore, the present invention proposes a low-power remote water meter based on 4G-Cat.1 technology to solve the above problems. Summary of the invention

[0007] The purpose of the present invention is to provide a low-power remote water meter based on 4G-Cat.1 technology to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions: a low-power remote transmission water meter based on 4G-Cat.1 technology, comprising a propeller-type water meter, a mounting seat integrally formed on the top of the propeller-type water meter, a meter body installed inside the mounting seat, a built-in drive frame of the propeller-type water meter, an impeller assembly mounted on the drive frame, a drive rod installed at the output end of the impeller assembly, a protective cylinder integrally formed on the drive frame and corresponding to the meter body, the drive rod is built into the protective cylinder, and a sealing kit sleeved on the outside of the protective cylinder is fixed inside the mounting seat; The sealing kit includes a sealing felt fixed on the inner wall of the mounting seat, a sealing rubber ring is fixed to the inner wall of the sealing felt, an annular air bag is fixedly installed inside the sealing rubber ring, a first sealing rubber ring is fixedly installed on the outer side of the annular air bag, the first sealing rubber ring has an elastic pressure-bearing layer built in, a first expansion sealing rubber layer is fixedly arranged on the top of the inner side of the sealing rubber ring, a second expansion sealing rubber layer is fixedly arranged on the bottom of the inner side of the sealing rubber ring, and the top and bottom of the first sealing rubber ring are integrally formed with limiting convex rings embedded in the first expansion sealing rubber layer and the second expansion sealing rubber layer.

[0009] Preferably, the sealing rubber ring is sleeved and installed on the outer wall of the protective tube, and an annular receiving groove is opened on the inner side of the sealing rubber ring, the annular air bag is fixed in the middle of the side wall of the annular receiving groove away from the opening, the first expansion sealant layer is fixed on the top of the annular receiving groove, and the second expansion sealant layer is fixed on the bottom of the annular receiving groove.

[0010] Preferably, the elastic pressure-bearing layer is fixedly installed between the first sealing rubber ring and the annular air bag, and the cross-section of the elastic pressure-bearing layer is arc-shaped. The elastic pressure-bearing layer is a silicone pad, and the top end of the elastic pressure-bearing layer is fixedly connected to the top of the annular air bag, and the bottom end of the elastic pressure-bearing layer is fixedly connected to the bottom of the annular air bag.

[0011] Preferably, the top of the annular airbag is fixedly connected to the top of the first sealing rubber ring side wall, the bottom of the annular airbag is fixedly connected to the bottom of the first sealing rubber ring side wall, and the side wall of the annular airbag is abutted against the side wall of the elastic pressure-bearing layer.

[0012] Preferably, the top and bottom of the side wall of the first sealing rubber ring close to the protective tube are both set as arc surfaces, and the side wall of the first sealing rubber ring close to the protective tube is provided with linearly arranged annular sealing grooves, and a sealing filling groove is formed between each group of arc surfaces and the first expansion sealant layer and the second expansion sealant layer.

[0013] Preferably, the position of the limiting convex ring corresponds to the end position of the elastic pressure-bearing layer, and the upper and lower groups of limiting convex rings are embedded and inserted inside the first expansion sealant layer and the second expansion sealant layer.

[0014] Preferably, a retreat groove is formed between the annular air bag and the first expansion sealant layer and the second expansion sealant layer.

[0015] Preferably, the propeller-type water meter also includes an inlet flange and an outlet flange, a meter cover mounted on the top of the mounting seat and sleeved on the outside of the meter body is installed, a protective cover is installed on the top of the meter cover, a guide plate is installed at the outlet flange, and a second sealing rubber ring is installed at the assembly position of the mounting seat and the meter body.

[0016] Technical effects and advantages of the present invention: 1. When the sealing performance of the propeller-type water meter of the present invention changes, moisture will first contact the second expansion sealant layer, so that the second expansion sealant layer will absorb water and expand rapidly, and then expand in the sealing rubber ring to form a sealing barrier layer, thereby realizing self-remediation of waterproofing. When the second expansion sealant layer absorbs water and expands, it can automatically fill into the sealing filling groove, increase its contact area with the protective tube, and improve the sealing performance. Moisture can be reasonably used to promote the expansion of the expansion sealant layer. The expanded sealant can effectively prevent moisture penetration and improve the waterproof performance. The expanded expansion sealant layer is used to generate an extrusion force on the annular air bag, thereby further enhancing the sealing performance of the sealing rubber ring, improving the waterproof protection capability, and realizing self-remediation of water seepage.

[0017] 2. After the second expansion sealant layer in the present invention is filled into the retreat groove, it will generate an extrusion force on the bottom of the annular air bag, thereby causing the bottom of the annular air bag to be compressed and deformed. The bottom of the annular air bag will pull the bottom end of the first sealing rubber ring to move backward. At the same time, the internal air pressure of the annular air bag increases, which generates an extrusion force on the elastic pressure-bearing layer, and then generates an extrusion force on the first sealing rubber ring to enhance the sealing performance. In addition, after the second expansion sealant layer is filled into the sealing filling groove, it will generate an extrusion force on the arc surface on the first sealing rubber ring, and then push the bottom end of the first sealing rubber ring to move backward. Combined with the pulling effect of the annular air bag on the first sealing rubber ring, the bottom end of the first sealing rubber ring can be prompted to move toward the inside of the sealing rubber ring, thereby causing the bottom of the first sealing rubber ring to deform outward, that is, the arc surface is elongated, thereby increasing the filling space of the second expansion sealant layer in the sealing filling groove, enhancing the sealing protection. In addition, the extrusion force of the annular air bag on the first sealing rubber ring strengthens the sealing protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall first-view structure of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention from a second viewing angle; Figure 3It is a schematic diagram of the overall explosion structure of the present invention; Figure 4 It is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 5 This is a schematic diagram of the structure of the sealing kit of the present invention; Figure 6 This is a schematic diagram of the structure of the sealing rubber ring of the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of the sealing rubber ring of the present invention; Figure 8 It is a schematic diagram of the enlarged structure of part A of the present invention; Fig. 9 This is a schematic diagram of the structure of the first sealing state of the present invention; Fig.10 This is a schematic diagram of the second sealing state structure of the present invention.

[0019] In the figure: 10, propeller-type water meter; 11, water inlet flange; 12, water outlet flange; 13, mounting seat; 14, meter body; 15, meter cover; 16, protective cover; 17, drive frame; 18, impeller assembly; 19, protective tube; 110, drive rod; 111, guide plate; 112, second sealing rubber ring; 20, sealing kit; 21, sealing felt; 22, sealing rubber ring; 23, first sealing rubber ring; 24, elastic pressure-bearing layer; 25, annular sealing groove; 26, arc surface; 27, first expansion sealing rubber layer; 28, second expansion sealing rubber layer; 29, sealing filling groove; 210, limiting convex ring; 211, annular air bag; 212, retreat groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] like Figures 1 to 10As shown, this embodiment discloses a low-power remote water meter based on 4G-Cat.1 technology, including a propeller-type water meter 10, a mounting seat 13 is integrally formed on the top of the propeller-type water meter 10, a meter body 14 is installed inside the mounting seat 13, a drive frame 17 is built in the propeller-type water meter 10, an impeller assembly 18 is assembled on the drive frame 17, a drive rod 110 is installed at the output end of the impeller assembly 18, and a protective cylinder 19 corresponding to the meter body 14 is integrally formed on the drive frame 17. The driving rod 110 is built into the protective tube 19, and a sealing kit 20 is fixed inside the mounting seat 13 and is sleeved on the outside of the protective tube 19. The propeller-type water meter 10 also includes an inlet flange 11 and an outlet flange 12. A meter cover 15 sleeved on the outside of the meter body 14 is installed on the top of the mounting seat 13, and a protective cover 16 is installed on the top of the meter cover 15. A guide plate 111 is installed at the outlet flange 12, and a second sealing rubber ring 112 is installed at the assembly position of the mounting seat 13 and the meter body 14.

[0022] During actual use, water flows into the propeller water meter 10 from the water inlet flange 11, and then drives the impeller assembly 18 to rotate, thereby driving the driving rod 110 to rotate. Each rotation of the driving rod 110 will trigger the pulse generator to generate an electronic pulse signal. These pulse signals are received by the meter body 14 built into the water meter, and then displayed on the dial of the meter body 14. The meter body 14 and the impeller assembly 18 are separated by a sealing kit 20 to achieve the purpose of waterproofing, which greatly improves the waterproof protection of the electronic components inside the meter body 14, and the second sealing rubber ring 112 forms a second layer of protection for the meter body 14 to improve the waterproofness of the meter body 14.

[0023] See also Figure 3-Figure 8 The sealing kit 20 includes a sealing felt 21 fixed on the inner wall of the mounting seat 13, and the sealing felt 21 realizes basic water-proof protection. A sealing rubber ring 22 is fixed on the inner wall of the sealing felt 21. The sealing rubber ring 22 is tightly sleeved on the outer side of the protective tube 19 to prevent moisture from directly contacting the meter body 14. An annular air bag 211 is fixedly installed in the sealing rubber ring 22, and a first sealing rubber ring 23 is fixedly installed on the outer side of the annular air bag 211. The first sealing rubber ring 23 has an elastic pressure-bearing layer 24 built in. A first expansion sealant layer 27 is fixedly arranged on the top of the inner side of the sealing rubber ring 22. The sealing rubber A second expansion sealant layer 28 is fixedly provided at the bottom inner side of the ring 22, and a limiting convex ring 210 embedded in the first expansion sealant layer 27 and the second expansion sealant layer 28 is integrally formed at the top and bottom of the first sealing rubber ring 23, and the sealing rubber ring 22 is sleeved and installed on the outer side wall of the protective tube 19, and an annular receiving groove is opened on the inner side of the sealing rubber ring 22, and an annular air bag 211 is fixed in the middle of the side wall of the annular receiving groove away from the opening, the first expansion sealant layer 27 is fixed at the top of the annular receiving groove, and the second expansion sealant layer 28 is fixed at the bottom of the annular receiving groove.

[0024] In actual use, the sealing rubber ring 22 is sleeved on the outer wall of the protective tube 19 to achieve preliminary sealing protection, and the first sealing rubber ring 23 is fitted on the outer wall of the protective tube 19 to strengthen the seal. In this way, in actual use, the water splashed when the impeller assembly 18 rotates will not directly contact the meter body 14. However, once the first sealing rubber ring 23 ages, the sealing performance of the first sealing rubber ring 23 will be greatly reduced, causing the moisture inside the propeller water meter 10 to penetrate through the assembly position of the protective tube 19 and the sealing rubber ring 22. Then, when the moisture penetrates from the bottom of the sealing rubber ring 22, the moisture will first contact the second expansion sealant layer 28. In this way, the second expansion sealant layer 28 will absorb water and expand rapidly, and then expand inside the sealing rubber ring 22 to form a sealing barrier layer, thereby achieving waterproof self-remediation.

[0025] It should be noted that the top and bottom of the side wall of the first sealing rubber ring 23 close to the protective tube 19 are both set as arc surfaces 26, and a linearly arranged annular sealing groove 25 is opened on the side wall of the first sealing rubber ring 23 close to the protective tube 19, and a sealing filling groove 29 is formed between each group of arc surfaces 26 and the first expansion sealant layer 27 and the second expansion sealant layer 28. When the second expansion sealant layer 28 absorbs water and expands, it can automatically fill into the sealing filling groove 29, thereby increasing its contact area with the protective tube 19 and improving the sealing performance.

[0026] See also Figure 8 and Fig. 9 The elastic pressure-bearing layer 24 is fixedly installed between the first sealing rubber ring 23 and the annular air bag 211, and the cross-section of the elastic pressure-bearing layer 24 is arc-shaped. The elastic pressure-bearing layer 24 is a silicone pad, and the top of the elastic pressure-bearing layer 24 is fixedly connected to the top of the annular air bag 211, and the bottom of the elastic pressure-bearing layer 24 is fixedly connected to the bottom of the annular air bag 211. The top of the annular air bag 211 is fixedly connected to the top of the side wall of the first sealing rubber ring 23, and the bottom of the annular air bag 211 is fixedly connected to the bottom of the side wall of the first sealing rubber ring 23, which can ensure the position stability between the annular air bag 211 and the first sealing rubber ring 23, and the side wall of the annular air bag 211 is against and fits on the side wall of the elastic pressure-bearing layer 24, and a retreat groove 212 is formed between the annular air bag 211 and the first expansion sealant layer 27 and the second expansion sealant layer 28.

[0027] In actual use, when the second expansion sealant layer 28 absorbs water and expands, the second expansion sealant layer 28 will be simultaneously filled into the sealing filling groove 29 and the retreat groove 212. In this way, after the second expansion sealant layer 28 is filled into the retreat groove 212, it will generate an extrusion force on the bottom of the annular air bag 211, thereby causing the bottom of the annular air bag 211 to be compressed and deformed. The bottom of the annular air bag 211 will pull the bottom end of the first sealing rubber ring 23 to move backward. At the same time, the internal air pressure of the annular air bag 211 increases, which generates an extrusion force on the elastic pressure-bearing layer 24, and then generates an extrusion force on the first sealing rubber ring 23 to enhance the sealing performance. In addition, after the second expansion sealant layer 28 is filled into the sealing filling groove 29, it will generate an extrusion force on the arc surface 26 on the first sealing rubber ring 23, and then push the bottom end of the first sealing rubber ring 23 to move backward, and cooperate with The pulling effect of the annular air bag 211 on the first sealing rubber ring 23 can cause the bottom end of the first sealing rubber ring 23 to move toward the inside of the sealing rubber ring 22, so that the bottom of the first sealing rubber ring 23 is deformed outward, that is, the arc surface 26 is elongated, thereby increasing the filling space of the second expansion sealing rubber layer 28 in the sealing filling groove 29, enhancing the sealing protection, and the squeezing force of the annular air bag 211 on the first sealing rubber ring 23, thereby enhancing the sealing protection. Therefore, after water seepage occurs, the moisture can be reasonably used to cause the expansion of the expansion sealing rubber layer. The expanded sealant can effectively prevent moisture penetration and improve the waterproof performance. The expanded expansion sealing rubber layer is used to generate squeezing pressure on the annular air bag 211, which further enhances the sealing of the sealing rubber ring, improves the waterproof protection capability, and realizes self-seepage remediation.

[0028] See also Figure 8-Figure 10 The position of the limiting convex ring 210 corresponds to the end position of the elastic pressure-bearing layer 24, and the upper and lower sets of limiting convex rings 210 are embedded in the first expansion sealant layer 27 and the second expansion sealant layer 28. After the expansion sealant layer absorbs water and expands, the end of the first sealing rubber ring 23 can be pulled in real time, and the limiting convex ring 210 is embedded in the expansion sealant layer, which can ensure the relative fixation of the position between the expansion sealant layer and the first sealing rubber ring 23, and prevent the end position of the first sealing rubber ring 23 from deviating from the expansion sealant layer after the expansion sealant layer expands, so that the first sealing rubber ring 23 cannot be deformed to enhance the waterproof sealing performance.

[0029] It is worth noting that the water seepage path of the water inside the propeller water meter 10 is between the protective tube 19 and the sealing rubber ring 22. When the impeller assembly 18 inside the driving frame 17 is working, the water when the impeller assembly 18 rotates may dissipate to the top of the sealing kit 20 along the driving rod 110. Therefore, when water seeps into the top of the sealing kit 20, the water can be absorbed by the first expansion sealant layer 27, and then expand and deform, and automatically fill into the sealing filling groove 29 and the retreat groove 212 above the inside of the sealing rubber ring 22. The water absorption and expansion principle is the same as that of the second expansion sealant layer 28. This operation is used to enhance the waterproof protection. A pressure sensor is installed at the assembly of the first expansion sealant layer 27 and the sealing rubber ring 22. The pressure sensor can be used to detect the pressure of the first expansion sealant layer 27 after absorbing water and swelling, thereby determining its water absorption and swelling amount.

[0030] It should be noted that the sealing rubber ring 22 can complete the initial waterproof protection. Since the sealing rubber ring 22 and the first sealing rubber ring 23 are tightly fitted on the outer wall of the protective tube 19, multiple waterproof treatments can be achieved to enhance the waterproof effect. During use, once moisture penetrates into the sealing rubber ring 22 from below, the moisture must first contact the second expansion sealant layer 28. At this time, the second expansion sealant layer 28 absorbs water and expands, which also indicates that the sealing performance of the sealing rubber ring 22 is reduced. Since the sealing rubber ring 22 and the first sealing rubber ring 23 are made of the same material, when the water permeability of the sealing rubber ring 22 decreases, the sealing performance of the first sealing rubber ring 23 is inevitably affected. At this time, the moisture is reasonably used to cause the second expansion sealant layer 28 to expand. The expanded sealant can effectively prevent moisture penetration and improve waterproofing. Performance, using the expanded second expansion sealant layer 28 to generate squeezing force on the annular air bag 211, and the annular air bag 211 exerts squeezing force on the first sealing rubber ring 23, thereby strengthening the sealing protection, further enhancing the sealing of the first sealing rubber ring 23, improving the waterproof protection capability, realizing the self-seepage remedy of the sealing rubber ring 22, and avoiding the waterproof failure of the first sealing rubber ring 23. At this time, the first expansion sealant layer 27 does not absorb water and swell, so the expansion amount is 0. However, when the first expansion sealant layer 27 absorbs water and swells, it indicates that the sealing of the drive rod 110 inside the drive frame 17 is reduced. When the expansion amount of the first expansion sealant layer 27 reaches the first threshold value, it indicates that, under the premise of the waterproof failure of the sealing rubber ring 22, the sealing of the drive rod 110 inside the drive frame 17 is poor and needs to be replaced in time.

[0031] It should be noted that when the second expansion sealant layer 28 and the first expansion sealant layer 27 absorb water and swell synchronously, it indicates that the first sealing rubber ring 23 and the sealing rubber ring 22 are damaged synchronously. The synchronous water absorption and expansion of the second expansion sealant layer 28 and the first expansion sealant layer 27 can be used to complete the waterproof remedial measures after the failure of the first sealing rubber ring 23.

[0032] In actual use, after the second expansion sealant layer 28 absorbs water and swells, it expands in the sealing rubber ring 22 to form a sealing barrier layer, thereby achieving self-remediation of waterproofing and enhancing the waterproof protection of the first sealing rubber ring 23. In this way, in the subsequent use process, the first expansion sealant layer 27 will not absorb water and swell again due to the failure of the first sealing rubber ring 23. However, if in the subsequent use process, the first expansion sealant layer 27 continues to absorb water and swell, it indicates that after the waterproofing measure of the second expansion sealant layer 28, there is still water infiltration, which indicates that when the impeller assembly 18 is working on the driving frame 17, the driving rod 110 is on the driving frame 17. The internal sealing performance is reduced, causing moisture at the impeller assembly 18 to penetrate from the inside of the protective tube 19 to the top of the sealing kit 20, and the first expansion sealant layer 27 has already absorbed water and expanded, so the expansion amount is greater than the first threshold value. When the expansion amount of the first expansion sealant layer 27 after absorbing water again reaches the second threshold value, it indicates that, under the premise that the sealing rubber ring 22 and the first sealing rubber ring 23 are damaged at the same time, the sealing performance of the drive rod 110 inside the drive frame 17 is poor and needs to be replaced in time. Therefore, the meter body 14 transmits the maintenance command to the remote terminal through its internal wireless transmission module, which is convenient for the staff to carry out maintenance and replacement in time.

[0033] It should be noted that the meter body 14 has a built-in main control part, and the main control part is integrated with a signal conversion circuit, an acquisition module, a 4G-Cat.1 transceiver circuit, a power supply module, a voltage detection circuit, and an infrared transceiver circuit. The main control part adopts the HC32L13 series low-power microcontroller. The power consumption of the microcontroller in sleep mode is 0.2uA@3.3V, and when entering sleep mode, only the RTC and trigger detection circuit interfaces are opened, and other peripheral interfaces are all closed.

[0034] The signal conversion circuit adopts a bidirectional level conversion circuit U4, which does not require a direction control signal. When the circuit does not detect a signal input or an open circuit, the single-side power supply current is 1uA@3.3V, which can effectively prevent leakage between the microcontroller serial port and the module serial port due to the module being turned off in sleep mode. The signal conversion circuit U4 adopts a normally open design and is shut down at 1.8V in low-power sleep mode, so no current is consumed here.

[0035] The acquisition module uses JP4 to effectively prevent useless current consumption at the port. JP4 uses low-power acquisition to detect the rotation pulse of the water meter steel sheet. The number of rotation pulses is sent to the microcontroller serial port through the TTL serial port SCNM_RX through the built-in circuit. The acquisition circuit here is unidirectional, the direction is from the acquisition circuit to the microcontroller, and in the low-power mode, SCNM_RX is low and no longer consumes current. The microcontroller controls SCNM_RX to send data by controlling the SCNM_CTR level.

[0036] 4G-Cat.1 transceiver circuit, which is composed of M1 and other peripheral circuits. The main data communication interface of the circuit is TTL serial port, which is sent to the microcontroller after level conversion through the connected signal conversion circuit. 1.8V is the power supply output of M1, which is automatically turned on when powered on. After turning on, the level conversion circuit U4 works normally. In the sleep state, M1 is turned off, and the M1 serial port no longer consumes current.

[0037] Power supply module, the water meter is powered by a disposable lithium polymer battery and a supercapacitor, the battery voltage is 3.65V, the water meter voltage conversion uses a low-power LDO, U6, the leakage current is 0.2uA in the working state, and the circuit here is normally open.

[0038] Voltage detection circuit, the water meter determines whether the battery is low through the voltage value when uploading data.

[0039] In the infrared transceiver circuit, in the sleep low power mode, the microcontroller serial ports UART_RX and UART_TX are set as high-impedance inputs by the microcontroller, and the infrared transceiver circuit no longer consumes current.

[0040] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-power remote water meter based on 4G-Cat.1 technology, comprising a propeller-type water meter (10), wherein a mounting seat (13) is integrally formed on the top of the propeller-type water meter (10), a meter body (14) is mounted inside the mounting seat (13), the propeller-type water meter (10) has a built-in drive frame (17), an impeller assembly (18) is mounted on the drive frame (17), and a drive rod (110) is mounted on the output end of the impeller assembly (18), characterized in that: The driving frame (17) is integrally formed with a protective tube (19) corresponding to the meter body (14); the driving rod (110) is built into the protective tube (19); and a sealing kit (20) sleeved on the outside of the protective tube (19) is fixed inside the mounting seat (13); The sealing kit (20) comprises a sealing felt (21) fixed on the inner side wall of the mounting seat (13); a sealing rubber ring (22) is fixed on the inner side wall of the sealing felt (21); an annular air bag (211) is fixedly installed inside the sealing rubber ring (22); a first sealing rubber ring (23) is fixedly installed outside the annular air bag (211); the first sealing rubber ring (23) has an elastic pressure-bearing layer (24) built in; a first expansion sealing rubber layer (27) is fixedly arranged on the top of the inner side of the sealing rubber ring (22); a second expansion sealing rubber layer (28) is fixedly arranged on the bottom of the inner side of the sealing rubber ring (22); and a limiting convex ring (210) embedded in the first expansion sealing rubber layer (27) and the second expansion sealing rubber layer (28) is integrally formed on the top and bottom of the first sealing rubber ring (23).

2. The low-power remote water meter based on 4G-Cat.1 technology according to claim 1 is characterized by: The sealing rubber ring (22) is sleeved and mounted on the outer wall of the protective tube (19), and an annular receiving groove is provided on the inner side of the sealing rubber ring (22). The annular air bag (211) is fixed in the middle of a side wall of the annular receiving groove away from the opening. The first expansion sealant layer (27) is fixed on the top of the annular receiving groove, and the second expansion sealant layer (28) is fixed on the bottom of the annular receiving groove.

3. The low-power remote water meter based on 4G-Cat.1 technology according to claim 2 is characterized by: The elastic pressure-bearing layer (24) is fixedly installed between the first sealing rubber ring (23) and the annular air bag (211), and the cross-section of the elastic pressure-bearing layer (24) is arc-shaped. The elastic pressure-bearing layer (24) is a silicone pad, and the top end of the elastic pressure-bearing layer (24) is fixedly connected to the top of the annular air bag (211), and the bottom end of the elastic pressure-bearing layer (24) is fixedly connected to the bottom of the annular air bag (211).

4. The low-power remote water meter based on 4G-Cat.1 technology according to claim 3 is characterized by: The top of the annular air bag (211) is fixedly connected to the top of the side wall of the first sealing rubber ring (23), the bottom of the annular air bag (211) is fixedly connected to the bottom of the side wall of the first sealing rubber ring (23), and the side wall of the annular air bag (211) is pressed against the side wall of the elastic pressure-bearing layer (24).

5. The low-power remote water meter based on 4G-Cat.1 technology according to claim 4 is characterized by: The top and bottom of the side wall of the first sealing rubber ring (23) close to the protective tube (19) are both arranged as arc-shaped surfaces (26); the side wall of the first sealing rubber ring (23) close to the protective tube (19) is provided with linearly arranged annular sealing grooves (25); and a sealing filling groove (29) is formed between each group of arc-shaped surfaces (26) and the first expansion sealing rubber layer (27) and the second expansion sealing rubber layer (28).

6. The low-power remote water meter based on 4G-Cat.1 technology according to claim 5 is characterized by: The position of the limiting convex ring (210) corresponds to the end position of the elastic pressure-bearing layer (24), and the upper and lower sets of limiting convex rings (210) are embedded and inserted inside the first expansion sealant layer (27) and the second expansion sealant layer (28).

7. The low-power remote water meter based on 4G-Cat.1 technology according to claim 4 is characterized by: A retreat groove (212) is formed between the annular air bag (211) and the first expansion sealant layer (27) and the second expansion sealant layer (28).

8. The low-power remote water meter based on 4G-Cat.1 technology according to claim 1 is characterized by: The propeller-type water meter (10) further comprises a water inlet flange (11) and a water outlet flange (12); a meter cover (15) sleeved on the outside of a meter body (14) is mounted on the top of the mounting seat (13); a protective cover (16) is mounted on the top of the meter cover (15); a guide plate (111) is mounted on the water outlet flange (12); and a second sealing rubber ring (112) is mounted in the mounting seat (13) and at the assembly position of the meter body (14).

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