STS prepayment remote transmission ultrasonic water meter

Abstract

The utility model relates to an STS prepayment remote transmission ultrasonic water meter which comprises a bottom plate and a cover shell, the cover shell covers the bottom plate, a display screen and a touch button which are connected with each other are installed in the cover shell, an observation window is arranged on the cover shell, the display screen corresponds to the observation window, a connecting pipe is arranged on the bottom plate, and the touch button is arranged on the connecting pipe. A Cat.1 communication module, a Bluetooth communication module, a LoRa communication module, an infrared communication module, a Cat.1 communication module, a Bluetooth communication module, a LoRa communication module, an infrared communication module and a power module are arranged on the bottom plate, and a metering mechanism and a cut-off mechanism are further installed on the bottom plate and used for measuring and cutting off water flow in the connecting pipe. An MCU (Microprogrammed Control Unit), an SIM (Subscriber Identity Module) card slot and a storage unit are arranged in the housing, all the modules are connected with the MCU, and the power supply module is used for supplying power to all the functional modules. Through the technology, the water meter can be installed in different countries and accords with local payment habits and payment means.

Description

Technical Field

[0001] This application relates to the field of water meters, and in particular to an STS pre-payment remote ultrasonic water meter. Background Art

[0002] Common water meters internationally are pre-payment water meters. However, common domestic pre-payment water meters usually use IC cards for payment, with a single payment method that cannot meet the different payment needs of each country. Therefore, there is an urgent need for a pre-payment water meter that can meet the national conditions and payment habits of each country. Utility Model Content

[0003] To solve the problem that common domestic pre-payment water meters have a single payment method and cannot meet the multiple payment needs of various countries, this application provides an STS pre-payment remote ultrasonic water meter.

[0004] The STS pre-payment remote ultrasonic water meter provided by this application adopts the following technical solutions:

[0005] An STS pre-payment remote ultrasonic water meter includes a bottom plate and a cover shell. The cover shell covers the bottom plate. A display screen and a touch button that are connected to each other are installed inside the cover shell. An observation window is opened on the top wall of the cover shell, and the display screen corresponds to the observation window. A connecting pipe is provided on the bottom plate, and the bottom plate is installed on a water pipe through the connecting pipe. A Cat.1 communication module, a Bluetooth communication module, a LoRa communication module, and an infrared communication module are provided on the bottom plate, as well as a power module. A metering mechanism and a cutoff mechanism are also installed on the bottom plate. The metering mechanism is used to measure the flow rate in the connecting pipe, and the cutoff mechanism is used to cut off the water flow in the connecting pipe. A PCB board is installed inside the cover shell, and an MCU main control unit, a SIM card slot, and a storage unit are installed on the PCB board. All the above communication modules, SIM card slot, display screen, touch button, metering mechanism, and cutoff mechanism are connected to the MCU main control unit, and the storage unit is connected to the MCU main control unit. The power module is used to supply power to all the above functional modules.

[0006] By means of the above technical means, when installing water meters in different countries, due to the above communication modules, the above water meters can adapt to the payment habits and payment methods of the vast majority of countries during payment, and can effectively ensure the monitoring of local tap water consumption and usage billing.

[0007] Optionally, a first installation pipe is provided on the bottom wall of the bottom plate. The connecting pipe is installed in the first installation pipe. A second installation pipe is provided on the first installation pipe. The first installation pipe communicates with the inside of the bottom plate through the second installation pipe. A first detection pipe is provided on the connecting pipe. The first detection pipe is correspondingly and fittingly embedded in the second installation pipe. The metering mechanism is connected through the first detection pipe to detect the flow rate in the connecting pipe.

[0008] The plastic standard for making the outer shell is different from the plastic standard for making the water pipe. The connecting pipe is installed on the bottom plate through the first installation pipe, so that the connecting pipe can be made of the plastic for making the water pipe, and the first installation pipe is made of the plastic for making the outer shell, ensuring the service life of the connecting pipe for passing water flow. At the same time, separate manufacturing simplifies the manufacturing process of the bottom plate.

[0009] Optionally, the metering mechanism includes two ultrasonic transducers. There are two second installation pipes and two first detection pipes. The two ultrasonic transducers are respectively embedded and installed in the two first detection pipes. The metering mechanism further includes two reflectors. A flow guide pipe is fittingly embedded in the connecting pipe. The flow guide pipe is located between the two ultrasonic transducers. The two reflectors are respectively installed at both ends of the flow guide pipe. The sound wave emission ends of the two ultrasonic transducers respectively emit towards the two reflectors. The reflecting surfaces of the two reflectors face each other, and the two ultrasonic transducers are respectively the emission end and the receiving end. Both ultrasonic transducers are connected to the MCU main control unit.

[0010] Optionally, a temperature sensor is provided on the bottom plate. There is a third installation pipe on the first installation pipe. There is a second detection pipe on the connecting pipe. The third installation pipe communicates with the inside of the bottom plate. The second detection pipe is fittingly embedded in the third installation pipe. The temperature sensor is fittingly embedded and installed in the second detection pipe. The detection end of the temperature sensor extends into the connecting pipe. A detection hole is provided on the flow guide pipe corresponding to the detection end of the temperature sensor. The temperature sensor is connected to the MCU main control unit.

[0011] Optionally, the second detection pipe is located between the two first detection pipes.

[0012] Optionally, a pressing plate is provided on the bottom plate, and the pressing plate is fitted tightly against the end face of the ultrasonic transducer facing away from the connecting tube, and the pressing plate is fitted tightly against an end face of the temperature sensor facing away from the connecting tube. Three connecting holes are provided on the pressing plate, and the connecting ends of the ultrasonic transducer and the temperature sensor extend into the three connecting holes respectively. A mounting plate is installed on the pressing plate, and the above-mentioned communication modules are all installed on the mounting plate. A power supply circuit is provided on the mounting plate, and the power supply circuit is electrically connected to all the communication modules on the mounting plate as well as the two ultrasonic transducers and the temperature sensor, and the power module is powered by the power supply circuit.

[0013] Optionally, a battery compartment is provided on the base, batteries are encapsulated in the battery compartment, a power supply plug is provided on the side wall of the battery compartment, a power supply port is provided on the bottom plate, the power supply plug is inserted into the power supply port, the power supply port of the bottom plate is connected to the power supply circuit through wires, the power supply port of the bottom plate is electrically connected to the PCB board through wires, two fixing ports are also provided on the pressure plate, a fixing head slidably connected to the fixing port is provided on the side wall of the battery compartment, and the fixing head is slidably inserted into the fixing port.

[0014] Optionally, the cut-off mechanism includes a motor installed on the base plate, one end of the connecting pipe extends out of the No. 1 mounting pipe and is connected to a water pipe, a No. 4 mounting pipe is coaxially arranged at the other end of the No. 1 mounting pipe, a valve is installed in the No. 4 mounting pipe, one end of the valve is connected to the connecting pipe, the other end of the valve extends out of one end of the No. 4 mounting pipe and is connected to the water pipe, the valve core of the valve is drivingly connected to the output shaft of the motor, and the motor is electrically connected to the MCU main control unit.

[0015] Optionally, a voltage detection circuit is provided on the PCB board, and the voltage detection circuit is connected to a circuit on the PCB board for detecting the supply voltage.

[0016] Optionally, threaded holes are provided on the end faces of the No. 1 detection tube and the No. 2 detection tube, and bolts matching the threaded holes are provided on the pressure plate. The pressure plate is fixedly mounted on the No. 1 detection tube and the No. 2 detection tube by bolts.

[0017] To sum up, this application is installed with Cat.1 communication module, Bluetooth communication module, LoRa communication module and infrared communication module at the same time. During on-site installation and debugging, it can be adjusted according to the payment ability and payment habits of different customers, and the battery power and traffic can be monitored in real time. When the battery voltage is too low or the traffic is abnormal, the user can be notified through the SIM system in time to deal with it in time to avoid losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic three-dimensional structure diagram of the present application.

[0019] Figure 2 is a schematic three-dimensional structure diagram of the present application after removing the housing part, and the battery compartment in the figure is not encapsulated with a battery.

[0020] Figure 3 is a schematic three-dimensional structure diagram of the present application after removing the PCB board and its upper part and the mounting plate. The power module is not shown in the figure, and the battery compartment in the figure is not encapsulated with a battery.

[0021] Figure 4 is a schematic cross-sectional diagram of the present application. The ultrasonic transducer and the temperature sensor are not cut in the figure.

[0022] Figure 5 is an exploded schematic diagram of the present application. The battery compartment in the figure is not encapsulated with a battery.

[0023] Those skilled in the art will understand that the elements in the drawings are shown for simplicity and clarity and are not necessarily drawn to scale. For example, the sizes and positions of some elements in the drawings may be enlarged relative to other elements to help improve the understanding of the embodiments of the present invention.

[0024] Reference numerals: 1, bottom plate; 11, first mounting pipe; 111, second mounting pipe; 112, third mounting pipe; 12, fourth mounting pipe; 13, power module; 14, power supply port; 2, housing; 21, display screen; 22, touch button; 23, observation window; 24, flip cover; 25, face sticker; 3, connecting pipe; 31, first detection pipe; 32, second detection pipe; 33, threaded hole; 4, PCB board; 41, MCU main control unit; 42, SIM card slot; 43, storage unit; 44, sponge pad; 5, mounting plate; 51, communication module; 6, metering mechanism; 61, ultrasonic transducer; 62, reflector; 63, diversion pipe; 7, truncation mechanism; 71, motor; 72, valve; 73, gear transmission mechanism; 8, temperature sensor; 9, pressing plate; 91, connection hole; 92, fixing port; 10, battery compartment; 101, power supply plug; 102, fixing head. Embodiment

[0025] The following will Figures 1-5 further describe the present application in detail with reference to the

[0026] Embodiments of the present application disclose an STS prepayment remote ultrasonic water meter. Referring to Figure 1 and Figure 2 , it includes a bottom plate 1 and a housing 2. The bottom plate 1 is set to be horizontally placed, and subsequent orientation descriptions are all based on the horizontal bottom plate 1. The housing 2 covers the bottom plate 1, and the bottom plate 1 is provided with an inner cavity.

[0027] Reference Figure 4 and Figure 5 A horizontal No. 1 mounting pipe 11 is integrally arranged on the bottom wall of the base plate 1, and two No. 2 mounting pipes 111 and a No. 3 mounting pipe 112 are integrally arranged on the No. 1 mounting pipe 11 along its length direction. The No. 2 mounting pipe 111 and the No. 3 mounting pipe 112 are both vertical, and the No. 3 mounting pipe 112 is located in the middle of the two No. 2 mounting pipes 111.

[0028] Reference Figure 4 and Figure 5 The two ends of the No. 2 installation pipe 111 are respectively connected to the interior of the No. 1 installation pipe 11 and the interior of the bottom plate 1, and the two ends of the No. 3 installation pipe 112 are also respectively connected to the interior of the No. 1 installation pipe 11 and the interior of the bottom plate 1. A connecting pipe 3 is embedded in the No. 1 installation pipe 11, and one end of the connecting pipe 3 extends out of the No. 1 installation pipe 11 and is connected to the water pipe. Two No. 1 detection pipes 31 and one No. 2 detection pipe 32 are integrally arranged on the side wall of the connecting pipe 3. The two No. 1 detection pipes 31 are respectively embedded in the two No. 2 installation pipes 111, and the No. 2 detection pipe 32 is embedded in the No. 3 installation pipe 112. The end face of the No. 1 detection pipe 31 is flush with the end face of the No. 2 installation pipe 111, and the end face of the No. 2 detection pipe 32 is flush with the end face of the No. 3 installation pipe 112.

[0029] Reference Figure 3 and Figure 4 A cut-off mechanism 7 is arranged on the bottom plate 1, and the cut-off mechanism 7 includes a motor 71 and a valve 72. A No. 4 mounting pipe 12 is also integrally arranged on the bottom wall of the base, and the No. 4 mounting pipe 12 is coaxially connected with the No. 1 mounting pipe 11. The valve 72 is coaxially embedded and installed in the No. 4 mounting pipe 12, one end of the valve 72 is sealed and connected with the connecting pipe 3, and the other end of the valve 72 extends out of the No. 4 mounting pipe 12 and is connected to the water pipe. The motor 71 is fixedly installed on the bottom plate 1, and the valve core of the valve 72 passes through the No. 4 mounting pipe 12 and the bottom plate 1 and the output shaft of the motor 71 are connected through a gear transmission mechanism 73. The valve core of the valve 72 is controlled by the motor 71 to cut off the water flow in the water pipe.

[0030] Reference Figure 3 and Figure 4, a metering mechanism 6 is provided on the bottom plate 1. The metering mechanism 6 includes two ultrasonic transducers 61 and a diversion pipe 63. The diversion pipe 63 is coaxially and fixedly installed in the middle of the connecting pipe 3. The two ultrasonic transducers 61 are respectively fitted and installed in two second installation pipes 111. The transmitting ends of the two ultrasonic transducers 61 are respectively located at both ends of the diversion pipe 63. Two reflecting plates 62 are fixedly installed at both ends of the diversion pipe 63. The reflecting plates 62 are circular, and the axis of the transmitting plate is located on the axis of the diversion pipe 63. The transmitting plate is inclined at 45° relative to the axis of the diversion pipe 63, and the transmitting plate faces both the transmitting end of the ultrasonic transducer 61 and the port of the diversion pipe 63 at the same time. The two ultrasonic transducers 61 act as the transmitting end and the receiving end for each other. The ultrasonic wave emitted by the ultrasonic transducer 61 is reflected by the reflecting plate 62 at a 45° angle and then transmitted in the water flow in the diversion pipe 63, and then is reflected by the other reflecting plate 62 to the transmitting end of the other ultrasonic transducer 61 for reception. The two ultrasonic transducers 61 alternately transmit and receive each other.

[0031] When the water in the connecting pipe 3 is static, the receiving times of the two ultrasonic transducers 61 alternately transmitting ultrasonic waves are the same. When the water flow starts, due to the influence of the water flow, the time for the ultrasonic wave emitted by the ultrasonic transducer 61 at the water inlet end of the connecting pipe 3 to be received by the other ultrasonic transducer 61 will be shortened, and the time for the ultrasonic wave emitted by the ultrasonic transducer 61 at the water outlet end of the connecting pipe 3 to be received by the other ultrasonic transducer 61 will be prolonged. By combining this time difference, the flow velocity of the water flow can be calculated. The calculation formula is flow velocity = pipe diameter × twice the distance between the ultrasonic transducers 61, and then by combining with the cross-sectional area of the pipe, the water flow rate can be calculated, and the flow rate monitoring is relatively accurate.

[0032] Among them, the diversion pipe 63 is both used for installing the reflecting plate 62, so that the ultrasonic transducer 61 does not need to be installed in the connecting pipe 3, reducing the pipe diameter of the connecting pipe 3 and improving the accuracy of flow rate monitoring in the connecting pipe 3. At the same time, the diversion pipe 63 further reduces the diameter of the connecting pipe 3 appropriately, further improving the metering accuracy of the water flow rate.

[0033] The water flow flows along the direction from the valve 72 to the connecting pipe 3.

[0034] Refer to Figure 3 and Figure 4 , a temperature sensor 8 is provided on the bottom plate 1. The temperature sensor 8 is fitted and installed in the second detection pipe 32. A detection hole is penetrated through the side wall of the diversion pipe 63. The detection end of the temperature sensor 8 penetrates into the connecting pipe 3 and corresponds to the detection hole, and the water temperature in the connecting pipe 3 is detected by the temperature sensor 8. Since the temperature sensor 8 is located in the middle of the connecting pipe 3, the water temperature detected by the temperature sensor 8 is the relatively accurate water temperature in the connecting pipe 3, and the detection result is not easily affected by the water temperature of the external water pipe.

[0035] Reference Figure 3 , a pressing plate 9 is arranged on the bottom plate 1. The pressing plate 9 fits and presses against the inner cavity bottom wall of the bottom plate 1, and three connecting holes 91 are formed in the pressing plate 9. The three connecting holes 91 respectively correspond to the pipe orifices of two first detection pipes 31 and the pipe orifice of a second detection pipe 32. The connecting ends of two ultrasonic transducers 61 and the connecting end of a temperature sensor 8 all extend into the connecting holes 91.

[0036] Reference Figure 3 and Figure 5 , threaded holes 33 are formed in the end faces of the first detection pipe 31 and the second detection pipe 32. Bolts matching with the threaded holes 33 are arranged on the pressing plate 9. The pressing plate 9 forms a fixed connection with the first detection pipe 31 and the second detection pipe 32 through the bolts. Compared with directly fixedly installed on the bottom plate 1, for the accuracy requirements between the end areas of the first detection pipe 31 and the second detection pipe 32 required for the pressing plate 9 to form a sealed enclosure for the first detection pipe 31 and the second detection pipe 32 and the bottom wall of the bottom plate 1, the pressing plate 9 is directly fixed on the first detection pipe 31 and the second detection pipe 32 to form a sealed fixation for the first detection pipe 31 and the second detection pipe 32, and the accuracy requirements for the end faces of the first detection pipe 31 and the second detection pipe 32 are lower. Moreover, the direct fitting and fixation make it not easy for the pressing plate 9 to leak when sealing the first detection pipe 31 and the second detection pipe 32.

[0037] Reference Figure 2 , a mounting plate 5 is fixedly installed on the pressing plate 9 in a fitting manner. A Cat.1 communication module 51, a Bluetooth communication module 51, a LoRa communication module 51, and an infrared communication module 51 are fixedly installed on the mounting plate 5. A power module 13 is also fixedly installed on the bottom plate 1. A power supply circuit is designed in the mounting plate 5. The power module 13 is connected to the power supply circuit through an electric wire. The power module 13 supplies power to the above communication modules 51 through the power supply circuit. At the same time, the connection ends of the power supply circuit with two ultrasonic transducers 61 and a temperature sensor 8 are all connected through electric wires. The power module 13 supplies power to two ultrasonic transducers 61 and a temperature sensor 8 through the power supply circuit.

[0038] Reference Figure 2 , Figure 3 and Figure 5, a battery compartment 10 is also designed on the bottom plate 1. A battery is encapsulated in the battery compartment 10. The battery encapsulated in the battery compartment 10 is not easily affected by moisture. At the same time, a power supply plug 101 is integrally provided on the side wall of the battery compartment 10, and a power supply port 14 is integrally provided on the bottom plate 1. The power supply port 14 is connected to the power supply circuit through an electric wire. The power supply plug 101 of the battery compartment 10 is inserted into the power supply port 14 for power supply. And a fixing head 102 is integrally provided on both side walls of the battery compartment 10. Two fixing ports 92 that are inserted and matched with the fixing head 102 are provided on the pressing plate 9. The two fixing heads 102 are respectively inserted into the two fixing ports 92 to form a support and fixation for the battery compartment 10.

[0039] At the same time, both the power module 13 and the power supply port 14 are connected to the motor 71 through electric wires to supply power to the motor 71.

[0040] Refer to Figure 2 and Figure 5 , a PCB board 4 is fixedly installed in the housing 2 through bolts. An MCU main control unit 41, an IM card slot, and a storage unit 43 are fixedly installed on the PCB board 4. The MCU main control unit 41 is electrically connected to the IM card slot and the storage unit 43 are connected to each other. A circuit is also provided in the PCB board 4 to supply power to the modules installed thereon. And the circuit on the PCB board 4 is connected to both the battery compartment 10 and the power module 13 through electric wires.

[0041] The MCU main control unit 41 is connected to all the above communication modules 51, two ultrasonic transducers 61, and the temperature sensor 8. The motor 71 is also connected to the MCU main control unit 41.

[0042] Refer to Figure 2 and Figure 5 , a viewing window 23 is penetrated and opened on the top wall of the housing 2. A liquid crystal display screen 21 and a touch button 22 are embedded on the inner top wall of the housing 2. The display screen 21 and the touch button 22 are integrally connected to each other. And both the display screen 21 and the touch button 22 are connected to the MCU main control unit 41. The display screen 21 corresponds to the viewing window 23. A sticker 25 is pasted on the display screen 21 to be used for displaying the display screen 21 and guiding the key positions of the touch button 22.

[0043] Refer to Figure 2 and Figure 5 , a sponge pad 44 is also fixedly installed on the PCB board. The PCB board is fixedly installed on the inner top wall of the housing 2 through bolts. And the PCB board presses the display screen 21 and the touch button 22 tightly against the housing through the sponge pad 44.

[0044] Refer to Figure 1 and Figure 5, a flip cover 24 is rotatably mounted on the top wall of the housing 2. After the flip cover 24 is closed, the flip cover 24 covers the window. The housing 2 is fixed to the bottom plate 1 by bolts.

[0045] A voltage detection circuit is provided on the PCB board 4. The voltage detection circuit is connected in series in the circuit of the PCB board 4 and is connected to the MCU main control unit 41. When the battery voltage is unstable, after the voltage detection circuit detects a signal, it is sent to the MCU main control unit 41, and then sent to the user's mobile phone through the SIM card for notification. In addition, when abnormal traffic is detected, relevant notifications will also be sent to the user's mobile phone through the SIM card, enabling the user to take timely measures to stop losses.

[0046] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. An STS prepaid remote ultrasonic water meter, comprising a base plate (1) and a cover (2), wherein the cover (2) covers the base plate (1), a display screen (21) and a touch button (22) are installed in the cover (2), an observation window (23) is provided on the top wall of the cover (2), the display screen (21) corresponds to the observation window (23), a connecting pipe (3) is provided on the base plate (1), and the base plate (1) is installed on the water pipe through the connecting pipe (3), characterized in that: A communication module (51) and a power module (13) are arranged on the bottom plate (1), wherein the communication module (51) comprises a Cat.1 communication module, a Bluetooth communication module, a LoRa communication module, and an infrared communication module; a metering mechanism (6) and a cut-off mechanism (7) are also installed on the bottom plate (1), wherein the metering mechanism (6) is used to measure the flow in the connecting pipe (3), and the cut-off mechanism (7) is used to cut off the water flow in the connecting pipe (3); a PCB board (4) is installed in the housing (2), and an MCU main control unit (41), a SIM card slot (42), and a storage unit (43) are installed on the PCB board (4); the communication module (51), the SIM card slot (42), the display screen (21), the touch button (22), the metering mechanism (6), and the cut-off mechanism (7) are all connected to the MCU main control unit (41); the storage unit (43) is connected to the MCU main control unit (41); and the power module (13) is used to supply power to the communication module (51).

2. The STS prepaid remote ultrasonic water meter according to claim 1, characterized in that: A No. 1 installation pipe (11) is arranged on the bottom wall of the base plate (1), the connecting pipe (3) is installed in the No. 1 installation pipe (11), a No. 2 installation pipe (111) is arranged on the No. 1 installation pipe (11), the No. 1 installation pipe (11) is connected to the interior of the base plate (1) through the No. 2 installation pipe (111), a No. 1 detection pipe (31) is arranged on the connecting pipe (3), the No. 1 detection pipe (31) is correspondingly embedded in the No. 2 installation pipe (111), and the metering mechanism (6) is connected to detect the flow rate in the connecting pipe (3) through the No. 1 detection pipe (31).

3. The STS prepaid remote ultrasonic water meter according to claim 2, characterized in that: The metering mechanism (6) comprises two ultrasonic transducers (61), two of the second installation tube (111) and the first detection tube (31) are provided, and the two ultrasonic transducers (61) are respectively embedded and installed in the two first detection tubes (31). The metering mechanism (6) also comprises two reflecting plates (62), a guide tube (63) is cooperatively embedded and installed in the connecting tube (3), the guide tube (63) is located between the two ultrasonic transducers (61), the two reflecting plates (62) are respectively installed at two ends of the guide tube (63), the sound wave transmitting ends of the two ultrasonic transducers (61) are respectively emitted toward the two reflecting plates (62), the reflecting surfaces of the two reflecting plates (62) are opposite, and the two ultrasonic transducers (61) are mutually transmitting ends and receiving ends, and the two ultrasonic transducers (61) are both connected to the MCU main control unit (41).

4. The STS prepaid remote ultrasonic water meter according to claim 3 is characterized by: The bottom plate (1) is provided with a temperature sensor (8), the first mounting tube (11) is provided with a third mounting tube (112), the connecting tube (3) is provided with a second detection tube (32), the third mounting tube (112) is connected to the inside of the bottom plate (1), the second detection tube (32) is cooperatively embedded in the third mounting tube (112), the temperature sensor (8) is cooperatively embedded in the second detection tube (32), the detection end of the temperature sensor (8) extends into the connecting tube (3), the guide tube (63) is provided with a detection hole corresponding to the detection end of the temperature sensor (8), and the temperature sensor (8) is connected to the MCU main control unit (41).

5. The STS prepaid remote ultrasonic water meter according to claim 4, characterized in that: The No. 2 detection tube (32) is located between the two No. 1 detection tubes (31).

6. The STS prepaid remote ultrasonic water meter according to claim 4, characterized in that: A pressing plate (9) is provided on the bottom plate (1), the pressing plate (9) is in close contact with the end surface of the ultrasonic transducer (61) facing away from the connecting tube (3), the pressing plate (9) is in close contact with one end surface of the temperature sensor (8) facing away from the connecting tube (3), three connecting holes (91) are provided on the pressing plate (9), the connecting ends of the ultrasonic transducer (61) and the connecting ends of the temperature sensor (8) respectively extend into the three connecting holes (91), a mounting plate (5) is mounted on the pressing plate (9), the communication module (51) is mounted on the mounting plate (5), a power supply circuit is provided on the mounting plate (5), the power supply circuit is electrically connected to the communication module (51) on the mounting plate (5) as well as the two ultrasonic transducers (61) and the temperature sensor (8), and the power supply module (13) is powered by the power supply circuit.

7. The STS prepaid remote ultrasonic water meter according to claim 6, characterized in that: A battery compartment (10) is provided on the bottom plate (1), wherein a battery is encapsulated in the battery compartment (10), a power plug (101) is provided on a side wall of the battery compartment (10), a power port (14) is provided on the bottom plate (1), the power plug (101) is inserted into the power port (14), the power port (14) of the bottom plate (1) is connected to a power supply circuit via an electric wire, the power port (14) of the bottom plate (1) is electrically connected to the PCB board (4) via an electric wire, two fixing openings (92) are further provided on the pressing plate (9), a fixing head (102) slidably connected to the fixing opening (92) is provided on the side wall of the battery compartment (10), and the fixing head (102) is inserted into the fixing opening (92) via an electric wire.

8. The STS prepaid remote ultrasonic water meter according to claim 2, characterized in that: The cut-off mechanism (7) comprises a motor (71) mounted on the base plate (1); one end of the connecting pipe (3) extends out of the No. 1 mounting pipe (11) and is connected to a water pipe; a No. 4 mounting pipe (12) is coaxially arranged at the other end of the No. 1 mounting pipe (11); a valve (72) is installed in the No. 4 mounting pipe (12); one end of the valve (72) is connected to the connecting pipe (3); the other end of the valve (72) extends out of one end of the No. 4 mounting pipe (12) and is connected to the water pipe; a valve core of the valve (72) is drivingly connected to an output shaft of the motor (71); and the motor (71) is electrically connected to an MCU main control unit (41).

9. The STS prepaid remote ultrasonic water meter according to claim 1, characterized in that: A voltage detection circuit is provided on the PCB board (4); the voltage detection circuit is connected to a circuit on the PCB board (4) and is used to detect a power supply voltage.

10. The STS prepaid remote ultrasonic water meter according to claim 6, characterized in that: The end surfaces of the first detection tube (31) and the second detection tube (32) are both provided with threaded holes (33), the pressing plate (9) is provided with bolts that match the threaded holes (33), and the pressing plate (9) is fixedly mounted on the first detection tube (31) and the second detection tube (32) by means of the bolts.

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