CAT1-based household ultrasonic water meter and water meter net thereof

Abstract

The utility model aims to provide a CAT1-based household ultrasonic water meter and a water meter network thereof, and the CAT1-based household ultrasonic water meter comprises a metering module for acquiring flow data and a storage module for storing the flow data, the household ultrasonic water meter further comprises a CAT1 communication module for remotely transmitting the flow data accumulated and stored in the storage module, a first power management module for managing the on-off state of a power supply of the CAT1 communication module, and a Bluetooth module for short-range transmitting the flow data accumulated and stored in the storage module. Based on the advantages of a CAT1 communication module in data transmission rate and network search speed and the disadvantage of relatively high power consumption in unit time, the flow data of a user water meter is stored and then reported in a centralized manner, so that the total power consumption is reduced, and a working mode of NB-IOT communication is replaced. Meanwhile, through the mode that remote transmission of the CAT1 communication module is matched with short-range transmission of the Bluetooth module, water consumption data of the water meter in a remote area can be conveniently obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent water services, and more specifically, to the technical field of household ultrasonic water meters based on CAT1. Background Art

[0002] As a measurement tool, water meters have evolved from mechanical to electromechanical and then to electronic. Electronic ultrasonic water meter technology is becoming increasingly sophisticated. Electronic water meters are equipped with remote communication capabilities, uploading user water usage information to water utility platforms. However, due to the requirement for low power consumption, existing electronic water meters typically only support narrowband communication (NB-IoT) or self-organizing networks (LoRa, wired communication) that can connect to network platforms.

[0003] However, the working mode of self-organizing networks, whether using LoRa communication or wired communication, requires a high initial investment and is not suitable for environments that lack pre-built infrastructure, such as some remote areas. The working mode of NB-IOT communication is based on LTE (Long-Term Evolution) cellular wireless technology to achieve long-range wireless communication. It has achieved nationwide coverage and does not require pre-built infrastructure. However, water meters in remote areas are often placed in deep wells. The water meters are in a state of accumulated water for a long time, and users' water consumption information cannot be uploaded to the water platform in a timely manner. Data uploading to the platform may be delayed for several days or even dozens of days, causing the water meter data to be offline. At this time, on-site maintenance and meter reading operations are required. However, due to the lack of direct access to the water meters, maintenance and inspection work becomes complicated and difficult. In addition, the long-term accumulation of water in the water meter cannot take advantage of the long-term low-power operation of NB-IOT communication. Utility Model Content

[0004] The purpose of this utility model is to provide a household ultrasonic water meter based on CAT1 and its water meter network. The water meter has both long-range and short-range transmission functions, thereby facilitating the acquisition of water usage data of water meters in remote areas and realizing a low-power long-distance communication mode based on CAT1 communication technology that is similar to the working mode of NB-IOT communication.

[0005] The utility model is achieved through the following technical solutions:

[0006] In a first aspect, the embodiments of this specification provide a household ultrasonic water meter based on CAT1, including:

[0007] A metering module for acquiring flow data and a storage module for storing flow data;

[0008] The household ultrasonic water meter also includes a CAT1 communication module for remotely transmitting the flow data accumulated and stored in the storage module, a first power management module for managing the power on and off of the CAT1 communication module, and a Bluetooth module for short-range transmission of the flow data accumulated and stored in the storage module.

[0009] Under the same working time, the CAT1 communication module consumes higher power than the NB module using the NB-IOT communication working mode, but the CAT1 module is significantly better than the NB module in data transmission rate, and the time spent searching for the network is also significantly less than that of the NB module. In addition, the CAT1 communication module realizes long-distance wireless communication based on the existing 4G network. The 4G network has also achieved nationwide coverage, and there is no need to build infrastructure in advance.

[0010] Therefore, based on the advantages of the CAT1 communication module in data transmission rate and network search speed, and its disadvantage of high power consumption per unit time, a first power management module is provided to control the CAT1 communication module's on / off function. This allows user water meter flow data to be stored and reported centrally, while the module is turned off at other times, generating no power consumption. This reduces overall power consumption and replaces the NB-IoT communication mode. Furthermore, a Bluetooth module is provided to enable contactless short-range communication for on-site maintenance and meter reading operations. This eliminates the inconvenience of direct operation of water meters placed in deep wells by staff or users, improving the convenience of meter reading and maintenance. The combination of long-range transmission via the CAT1 communication module and short-range transmission via the Bluetooth module facilitates the acquisition of water meter consumption data in remote areas.

[0011] As a preferred embodiment of the present invention, the household ultrasonic water meter further includes a timing module connected to the first power management module.

[0012] The timing module provides time information, and the first power management module controls the switch of the CAT1 communication module according to the time information, so as to automatically upload the water meter water consumption data at a fixed time and frequency.

[0013] As a preferred embodiment of the present invention, the Bluetooth module includes a pairing receiving unit for receiving a short-range pairing request, and a transmission unit for short-range transmission of the traffic data accumulated and stored in the storage module to the pairing object after the pairing is successful.

[0014] When the water meter is in a state of water accumulation and the user's water consumption information cannot be uploaded to the water utility platform in time, and the staff needs to perform on-site maintenance and meter reading operations, the staff can use the terminal device to send a pairing request near the water meter. After receiving the pairing request from the terminal device, the pairing receiving unit establishes a communication connection, and the transmission unit transmits the flow data accumulated in the storage module to the terminal device that sent the pairing request, completing the on-site meter reading and ensuring the update of the water meter water consumption data.

[0015] As a preferred embodiment of the present invention, the household ultrasonic water meter further includes a second power management module for managing the power on and off of the Bluetooth module.

[0016] By setting the second power management module to control the switch of the Bluetooth module, the Bluetooth module is turned on when the Bluetooth function is needed, and is turned off at other times without generating power consumption, thereby reducing the total power consumption.

[0017] As a preferred embodiment of the present invention, the second power management module is connected to the timing module.

[0018] The second power management module controls the Bluetooth module's on / off state based on the time information provided by the timing module, enabling it to be turned on at a fixed frequency and at a set time. For example, the module can be controlled based on off-peak hours, busy hours, or custom operating hours, using the time information provided by the RTC module. This eliminates the need for the Bluetooth module to remain constantly on, reducing its power consumption and, consequently, the overall power consumption of the water meter.

[0019] As a preferred embodiment of the present invention, the household ultrasonic water meter further includes a valve control module for controlling the opening and closing state of the valve of the household ultrasonic water meter, and the valve control module is connected to the second power management module.

[0020] When the water meter is in arrears, the valve control module closes the valve. After the user discovers that the water supply has been cut off due to arrears and re-pays, the water utility platform receives the user's payment information. However, because the CAT1 communication module is not always on, the payment information cannot be synchronized to the water meter in time. The payment information will not be received until the next time the CAT1 communication module is turned on. The valve control module will then open the valve, which cannot meet the user's water demand in time. The user needs to establish short-range communication directly with the water meter's Bluetooth module to synchronize the payment information, so that the valve control module can open the valve and restore water supply.

[0021] However, since the time of water outage and arrears cannot be accurately predicted, if the Bluetooth module is also turned off at this time, the user will not be able to establish process communication with the water meter. By connecting the Bluetooth module to the valve control module, the Bluetooth on / off status is controlled by the valve opening and closing status. When the valve opening and closing status is closed, the Bluetooth module is automatically turned on, ensuring that the user can establish short-range communication with the water meter's Bluetooth module at any time, so that the valve can be opened in time to restore water supply and meet the user's water needs.

[0022] As a preferred embodiment of the present invention, the household ultrasonic water meter further includes a human-computer interaction module.

[0023] Users or staff can operate the water meter through the human-computer interaction module to perform maintenance, meter reading, or manually turn on and off the CAT1 communication module. This allows the CAT1 communication module to be turned on during the time set by the first power management module to be turned off, to upload water usage information and update payment information, thereby improving the convenience of the water meter.

[0024] As a preferred embodiment of the present invention, the household ultrasonic water meter further includes a display module for displaying flow data.

[0025] In a second aspect, the embodiments of this specification provide a household ultrasonic water meter network based on CAT1, including:

[0026] In the plurality of household ultrasonic water meters based on CAT1, the Bluetooth module further comprises a pairing request unit for initiating a short-range pairing request, and the storage module further stores flow data transmitted short-range by the Bluetooth module corresponding to the household ultrasonic water meter to which it belongs.

[0027] A water meter network consists of multiple household ultrasonic water meters, each of which has a Bluetooth module that includes both a pairing request unit and a pairing receiving unit. The Bluetooth module of any household ultrasonic water meter in the water meter network can pair with the Bluetooth modules of other household ultrasonic water meters in the network or with nearby Bluetooth-enabled terminal devices to establish short-range communication. The Bluetooth module then transmits the accumulated flow data stored in its own storage module via its own transmission unit to the storage module of the household ultrasonic water meter corresponding to the paired Bluetooth module or to the Bluetooth-enabled terminal device for storage. This approach seeks a way to remotely transmit the accumulated flow data stored in its own storage module, excluding its own CAT1 communication module. For example, the received flow data can be remotely transmitted to the water utility platform via the CAT1 communication modules of other household ultrasonic water meters or terminal devices.

[0028] As a preferred embodiment of the present invention, each household ultrasonic water meter further includes a signal detection module connected to the corresponding CAT1 communication module for detecting the signal strength of the CAT1 communication module, and the pairing request unit is connected to the signal detection module.

[0029] The signal detection module is capable of detecting the signal strength of the CAT1 communication module when remotely transmitting the accumulated flow data stored in its own storage module. The pairing request unit is connected to the signal detection module, enabling the pairing request unit to determine whether to initiate a short-range pairing request based on the signal strength detected by the signal detection module. For example, if the signal strength of the CAT1 communication module of any household ultrasonic water meter falls below a set value, the pairing request unit initiates a short-range pairing request, seeking a method for remotely transmitting the accumulated flow data stored in its own storage module, excluding its own CAT1 communication module. This eliminates the problem of water meter water usage information not being updated in a timely manner when the CAT1 module fails to effectively transmit the accumulated flow data stored in its own storage module due to signal strength issues.

[0030] In summary, the present invention has the following beneficial effects:

[0031] 1. Based on the advantages of the CAT1 communication module in data transmission rate and network search speed and the disadvantage of high power consumption per unit time, the first power management module is set to control the switch of the CAT1 communication module, and the flow data of the user's water meter is stored and reported centrally. It is turned off at other times and does not generate power consumption, thereby reducing the total power consumption and replacing the NB-IOT communication working mode. At the same time, a Bluetooth module is set to realize contactless short-range communication in the scenarios of on-site maintenance and meter reading operations, so as to eliminate the inconvenience of staff or users directly operating the water meter placed in the deep well, thereby improving the convenience of meter reading and maintenance work. By coordinating the long-range transmission of the CAT1 communication module and the short-range transmission of the Bluetooth module, it is convenient to obtain the water consumption data of water meters in remote areas;

[0032] 2. The timing module provides time information, and the first power management module controls the CAT1 communication module on and off according to the time information, so as to automatically upload the water meter water consumption data at a fixed time and frequency;

[0033] 3. When a water meter is flooded and the user's water consumption information cannot be uploaded to the water utility platform in a timely manner, and staff need to perform on-site maintenance and meter reading, they can use the terminal device to send a pairing request near the water meter. After receiving the pairing request from the terminal device, the pairing receiving unit establishes a communication connection, and the transmission unit transmits the accumulated flow data stored in the storage module to the terminal device that sent the pairing request, completing on-site meter reading and ensuring the update of water meter water consumption data.

[0034] 4. The second power management module controls the Bluetooth module's on / off according to the time information provided by the timing module, enabling it to be turned on at a fixed time and frequency. For example, the Bluetooth module can be turned on and off based on the time information provided by the RTC module, depending on the off-peak hours, busy hours, or self-set working hours. This eliminates the need for the Bluetooth module to remain in a constantly on state, reducing its power consumption and further reducing the total power consumption of the water meter.

[0035] 5. A water meter network composed of multiple household ultrasonic water meters, the Bluetooth module of each household ultrasonic water meter has both a pairing request unit and a pairing receiving unit. The Bluetooth module of any household ultrasonic water meter in the water meter network can be paired with the Bluetooth modules of other household ultrasonic water meters in the water meter network or nearby terminal devices with Bluetooth functions to establish short-range communication, and transmit the flow data accumulated in its own storage module through its own transmission unit to the storage module of the household ultrasonic water meter corresponding to the paired Bluetooth module or the terminal device with Bluetooth functions for storage. In this way, a way to remotely transmit the flow data accumulated in its own storage module is sought, excluding its own CAT1 communication module, such as remotely transmitting the received flow data to the water service platform through the CAT1 communication modules of other household ultrasonic water meters or terminal devices;

[0036] 6. The signal detection module is capable of detecting the signal strength of the CAT1 communication module when remotely transmitting the accumulated flow data stored in its own storage module. The pairing request unit is connected to the signal detection module, enabling the pairing request unit to determine whether to initiate a short-range pairing request based on the signal strength detected by the signal detection module. For example, if the signal strength of the CAT1 communication module of any household ultrasonic water meter falls below a set value, the pairing request unit initiates a short-range pairing request, seeking a method for remotely transmitting the accumulated flow data stored in its own storage module, excluding its own CAT1 communication module. This eliminates the problem of water meter water usage information not being updated in a timely manner when the CAT1 module fails to effectively transmit the accumulated flow data stored in its own storage module. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic structural diagram of a household ultrasonic water meter based on CAT1 in Example 1;

[0038] Figure 2 This is a schematic structural diagram of a household ultrasonic water meter based on CAT1 in Example 2;

[0039] Figure 3 This is a structural diagram of a household ultrasonic water meter network based on CAT1 in Example 3.

[0040] In the figure: 1. Household ultrasonic water meter; 11. Metering module; 12. Storage module; 13. CAT1 communication module; 14. First power management module; 15. Bluetooth module; 151. Pairing receiving unit; 152. Transmission unit; 153. Pairing request unit; 16. Timing module; 17. Second power management module; 18. Valve control module; 19. Human-computer interaction module; 20. Display module; 21. Signal detection module; 2. MCU; 3. Household ultrasonic water meter network. DETAILED DESCRIPTION

[0041] The present invention will be described in further detail below with reference to the accompanying drawings.

[0042] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0043] An ad hoc network is an autonomous, multi-hop network without a fixed infrastructure. It enables communication between terminals when existing network infrastructure is unavailable or inconvenient. Due to the limited transmission power and wireless coverage of terminals, communication between two distant terminals requires packet forwarding via other nodes, forming a wireless multi-hop network.

[0044] For remote areas, such as relatively isolated mountain villages far away from surrounding towns, if they want to integrate into the self-organizing network, they need to deploy a large number of terminals between the mountain villages and nearby towns to form a component terminal network, which is too costly.

[0045] Currently, mobile network infrastructure has achieved nationwide coverage. For the aforementioned application scenarios, the NB-IoT communication mode is commonly used to obtain user water meter usage data using existing network infrastructure. With the widespread adoption of 4G signals, the CAT1 communication mode has emerged in the IoT field. CAT1 modules significantly outperform NB modules in data transmission speed and significantly reduce network search time. However, for the same operating time, CAT1 communication consumes more power than NB-IoT. In these application scenarios, water meters are often located in deep wells, where they are constantly flooded. This prevents timely upload of user usage information to the water utility platform. Data uploads can be delayed for days or even dozens of days, causing the meter to go offline and resume uploads after the flooding condition is resolved. This prolonged flooding prevents the meter from taking advantage of the long-term, low-power operation of NB-IoT. Therefore, a water meter based on CAT1 communication is proposed. By reducing the overall power consumption of CAT1 communication water meters to a level similar to that of NB-IoT communication water meters, this upgrades the meter's remote transmission capabilities. In addition, to ensure the update of water usage data, on-site maintenance and meter reading operations are required. However, since it is difficult or impossible to directly access the water meter in the above scenarios, maintenance and inspection work becomes complicated and difficult. The water meter is equipped with both long-range and short-range transmission functions to facilitate contactless acquisition of water usage data from water meters in remote areas.

[0046] Example 1:

[0047] like Figure 1 As shown, a household ultrasonic water meter 1 based on CAT1 includes: a metering module 11 for obtaining flow data, characterized in that the household ultrasonic water meter 1 also includes a storage module 12 for storing flow data, a CAT1 communication module 13 for remotely transmitting the flow data accumulated and stored in the storage module 12, a first power management module 14 for managing the power on and off of the CAT1 communication module 13, and a Bluetooth module 15 for short-range transmission of the flow data accumulated and stored in the storage module 12.

[0048] For illustration, it is preferred to use an MCU2 integrated with a BLE (Bluetooth Low Energy) module and a storage module 12. Bluetooth signals are generated by the MCU2, ensuring the stability of Bluetooth, a fundamental function. This is more stable and cost-effective than using an external Bluetooth module 15. The MCU2 primarily communicates with the CAT1 communication module 13 via UART signal lines, namely the RXD and TXD pins. The STATE pin monitors status information returned by the CAT1 communication module 13. The RESET and MODE pins control the power-on and communication timing of the CAT1 communication module 13 to ensure proper operation. The IO_RST pin resets the CAT1 communication module 13. The MCU2 connects to the metering module 11 via SPI pins to obtain flow data. The first power management module 14 controls the power on and off of the CAT1 communication module 13.

[0049] For illustrative purposes, testing revealed that the Bluetooth module 15 consumed 360uA / day, while a single communication with the CAT1 communication module 13 consumed approximately 340uA / day. By reducing the number of times the CAT1 communication module 13 is enabled and using the Bluetooth module 15 as an emergency module, which remains always enabled, the water meter's overall power consumption can be reduced. Typically, a daily upload of the CAT1 communication module 13 is sufficient to obtain water usage data.

[0050] The flow data from user water meters is stored. The first power management module 14 controls the CAT1 communication module 13 to be turned on to centrally report the stored flow data. The CAT1 communication module 13 is turned off at other times to avoid power consumption, thereby reducing overall power consumption. Furthermore, a Bluetooth module 15 is provided to enable contactless short-range communication for on-site maintenance and meter reading operations. This eliminates the inconvenience of workers or users directly operating water meters located in deep wells, improving the convenience of meter reading and maintenance. The combination of long-range transmission via the CAT1 communication module 13 and short-range transmission via the Bluetooth module 15 facilitates the acquisition of water meter usage data in remote areas, allowing water meters to be installed in more complex environments, such as deep wells, areas requiring burial, and areas with heavy covers, where meter reading and maintenance personnel have difficulty accessing the meter.

[0051] In some embodiments of this application, the following functional optimizations have been implemented to address power consumption issues with the CAT1 module: selecting appropriate frequencies (China Mobile, China Unicom, and China Telecom) to accelerate network attachment, utilizing the module's built-in network attachment feedback mechanism to reduce scan times, and streamlining the AT command flow. Through collaboration with the platform, optimizations have enabled the simultaneous issuance of multiple preset commands and allowed the microcontroller to process no more than five preset commands simultaneously, thereby reducing communication times. According to internal test data, under good network signal conditions, a single complete CAT1 communication consumes only 0.02mAh more power than NB-IOT, a negligible increase in power consumption.

[0052] Example 2:

[0053] like Figure 2 As shown, a household ultrasonic water meter 1 based on CAT1 is different from Example 1 in that: the household ultrasonic water meter 1 also includes a timing module 16 connected to the first power management module 14, a second power management module 17 that manages the power on and off of the Bluetooth module 15, a valve control module 18 that controls the opening and closing status of the valve of the household ultrasonic water meter 1, a human-computer interaction module 19, and a display module 20 that displays flow data.

[0054] The Bluetooth module 15 includes a pairing receiving unit 151 for receiving a short-range pairing request, and a transmitting unit 152 for transmitting the traffic data accumulated and stored in the storage module 12 to the pairing partner over short distance after the pairing is successful.

[0055] The second power management module 17 is connected to the timing module 16 .

[0056] The valve control module 18 is connected to the second power management module 17 .

[0057] Illustratively, the timing module 16 is an RTC (Real Time Clock) module integrated into MCU2. As an independent timer, it features a continuous count counter and, with appropriate software configuration, can provide clock and calendar functionality. It can operate independently during power outages. As long as the MCU2's backup power remains on, the RTC time will continue to tick, facilitating the water meter's configuration of the daily reporting time for the CAT1 communication module 13 and flow data calculations, thereby reducing the power consumption associated with using the CAT1 module to report water usage information.

[0058] When the water meter is in a state of water accumulation and the user's water consumption information cannot be uploaded to the water platform in time, and the staff needs to perform on-site maintenance and meter reading operations, the staff can use the terminal device to send a pairing request near the water meter. After receiving the pairing request from the terminal device, the pairing receiving unit 151 establishes a communication connection, and the transmission unit 152 transmits the flow data accumulated and stored in the storage module 12 to the terminal device that sent the pairing request, completing the on-site meter reading and ensuring the update of the water meter water consumption data.

[0059] The first power management module 14 and the second power management module 17 can use electronic switches in the existing technology, such as relays, switching tubes, etc., to control the switching of the switches through electrical signals. The timing module 16 provides time information, and the first power management module 14 controls the CAT1 communication module 13 on and off according to the time information, thereby automatically uploading the water meter's water consumption data at a fixed time and frequency. The Bluetooth module 15 is used as a backup upload method for obtaining water consumption data, and in fact, it does not need to remain in a normally open state. The second power management module 17 controls the Bluetooth module 15 on and off according to the time information provided by the timing module 16, thereby turning on the Bluetooth module 15 at a fixed time and frequency. For example, the Bluetooth module 15 can be controlled to turn on and off according to the time information provided by the timing module 16 based on the off-peak hours, busy hours, or working hours set by the user, so that the Bluetooth module 15 does not need to remain in a normally open state, reducing the power consumption of the Bluetooth module 15 and further reducing the total power consumption of the water meter.

[0060] The human-computer interaction module 19, such as a touch screen with buttons, allows users or staff to operate the water meter through the human-computer interaction module 19 to perform maintenance and meter reading, or manually turn on or off the CAT1 communication module 13. This allows the CAT1 communication module 13 to be turned on during the time set when the first power management module 14 turns off the CAT1 communication module 13, thereby actively turning on the CAT1 communication module 13 to upload water usage information and update payment information, thereby improving the convenience of the water meter.

[0061] The display module 20 is such as a liquid crystal display, etc., which is connected to the display module 20 through the IIC pin of the MCU2 to display the meter number, water consumption information, etc.

[0062] The valve control module 18 is an electronic device that controls the opening and closing of the valve. It can adjust the flow of fluid according to payment information or a preset program or an external signal. When the water meter is in arrears, the valve control module 18 closes the valve. After the user finds that the water supply has been cut off due to arrears and re-pays the bill, the water service platform receives the user's payment information. However, since the CAT1 communication module 13 is not in the normally open state, the payment information cannot be synchronized to the water meter in time. The payment information will not be received until the next time the CAT1 communication module 13 is turned on. The valve control module 18 will then open the valve, which cannot meet the user's water demand in time. By connecting the Bluetooth module 15 to the valve control module 18, the opening and closing state of Bluetooth is controlled by the opening and closing state of the valve. When the opening and closing state of the valve is the closed state, the Bluetooth module 15 is automatically turned on, ensuring that the user can establish short-range communication with the Bluetooth module 15 of the water meter at any time, so as to open the valve in time to restore water supply and meet the user's water demand.

[0063] The modules work together to ensure the high efficiency of water usage data collection, processing, storage and transmission, providing a reliable solution for modern water management intelligence.

[0064] Example 3:

[0065] like Figure 3 As shown, a household ultrasonic water meter network 3 based on CAT1 includes: multiple household ultrasonic water meters 1 based on CAT1 in embodiment 2, and multiple water meters form the household ultrasonic water meter network 3.

[0066] The Bluetooth module 15 further includes a pairing request unit 153 for initiating a short-range pairing request. The storage module 12 further stores flow data transmitted short-range by the Bluetooth module 15 that does not correspond to the household ultrasonic water meter 1 to which it belongs.

[0067] Each household ultrasonic water meter 1 further includes a signal detection module 21 connected to the corresponding CAT1 communication module 13 for detecting the signal strength of the CAT1 communication module 13 , and the pairing request unit 153 is connected to the signal detection module 21 .

[0068] Illustratively, the Bluetooth module 15 of each household ultrasonic water meter 1 includes both a pairing request unit 153 and a pairing receiving unit 151. The Bluetooth module 15 of any household ultrasonic water meter 1 in the water meter network can pair with the Bluetooth modules 15 of other household ultrasonic water meters 1 in the water meter network or with nearby Bluetooth-enabled terminal devices to establish short-range communication. The Bluetooth module 15 can then transmit the accumulated flow data stored in its own storage module 12 via its own transmission unit 152 to the storage module 12 of the household ultrasonic water meter 1 corresponding to the paired Bluetooth module 15 or to the Bluetooth-enabled terminal device for storage. This provides a method for remotely transmitting the accumulated flow data stored in its own storage module 12, excluding its own CAT1 communication module 13. For example, the received flow data can be remotely transmitted to the water utility platform via the CAT1 communication modules 13 of other household ultrasonic water meters 1 or terminal devices.

[0069] Explanatory note, in some embodiments of the present application, when the first power management module 14 turns on the CAT1 communication module 13, if the Bluetooth module 15 is in the off state at this time, the second power management module 17 can simultaneously turn on the Bluetooth module 15 to ensure that the Bluetooth module 15 is in an available state when the CAT1 communication module 13 is working.

[0070] For illustration, the signal detection module 21 is an existing electronic device used for signal acquisition and threshold detection. A threshold for determining the signal strength of the CAT1 communication module 13 is pre-set. The detection result of the signal detection module 21 serves as a condition for the pairing request unit 153 to issue a pairing request to other water meters or terminals with Bluetooth functionality. Specifically, the pairing request unit 153 determines whether to initiate a short-range pairing request based on the signal strength detected by the signal detection module 21. For example, when the signal strength of the CAT1 communication module 13 of any household ultrasonic water meter 1 falls below a set value, the pairing request unit 153 initiates a short-range pairing request, seeking a method to remotely transmit the flow data accumulated in its own storage module 12, excluding its own CAT1 communication module 13. As the recipient of flow data, if it is from another water meter in the water meter network, the data is uploaded to the water management platform together with the meter's own CAT1 communication module 13 when it is activated. If it is from a staff member's terminal device, the data is uploaded directly to the water management platform via the terminal device. This eliminates the problem of water meter water usage information not being updated in a timely manner when the CAT1 module fails to effectively transmit the accumulated flow data stored in its own storage module 12 due to insufficient signal strength.

[0071] Implementation Principle: The first power management module 14 controls the CAT1 module to turn on and remotely transmit the accumulated flow data stored in its own storage module 12. Simultaneously, the second power management module controls the Bluetooth module 15 to turn on and remain in standby mode, while the signal detection module 21 simultaneously detects the signal strength of the CAT1 communication module 13. When the signal strength is weak, the pairing request unit 153 of the Bluetooth module 15 initiates a short-range pairing request, establishing short-range communication with the pairing receiving unit 151 of the Bluetooth module 15 in another household ultrasonic water meter 1 in the water meter network, or with a Bluetooth-enabled terminal device. The transmission unit 152 then transmits the accumulated flow data stored in its own storage module 12 to the paired device, which then remotely transmits the data to the water utility platform on its behalf.

[0072] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A household ultrasonic water meter based on CAT1, comprising a metering module (11) for acquiring flow data, characterized in that: The household ultrasonic water meter (1) further comprises a storage module (12) for storing flow data, a CAT1 communication module (13) for remotely transmitting the flow data accumulated and stored in the storage module (12), a first power management module (14) for managing the power on and off of the CAT1 communication module (13), and a Bluetooth module (15) for short-range transmission of the flow data accumulated and stored in the storage module (12).

2. A household ultrasonic water meter based on CAT1 according to claim 1, characterized in that: It also includes a timing module (16) connected to the first power management module (14).

3. A household ultrasonic water meter based on CAT1 according to claim 2, characterized in that: The Bluetooth module (15) comprises a pairing receiving unit (151) for receiving a short-range pairing request, and a transmission unit (152) for short-range transmission of the accumulated flow data stored in the storage module (12) to a pairing object after successful pairing.

4. A household ultrasonic water meter based on CAT1 according to claim 3, characterized in that: It also includes a second power management module (17) for managing the power on and off of the Bluetooth module (15).

5. A household ultrasonic water meter based on CAT1 according to claim 4, characterized in that: The second power management module (17) is connected to the timing module (16).

6. A household ultrasonic water meter based on CAT1 according to claim 5, characterized in that: It also includes a valve control module (18) for controlling the opening and closing state of the valve of the household ultrasonic water meter (1), and the valve control module (18) is connected to the second power management module (17).

7. A household ultrasonic water meter based on CAT1 according to claim 1, characterized in that: It also includes a human-computer interaction module (19).

8. The household ultrasonic water meter based on CAT1 according to claim 1, characterized in that: Also included is a display module (20) for displaying flow data.

9. A household ultrasonic water meter network based on CAT1, characterized in that: The invention comprises a plurality of household ultrasonic water meters (1) based on CAT1 as described in any one of claims 3 to 6, wherein the Bluetooth module (15) further comprises a pairing request unit (153) for initiating a short-range pairing request, and the storage module (12) further stores flow data transmitted in a short range by the Bluetooth module (15) corresponding to the household ultrasonic water meter (1) to which the storage module (12) does not belong.

10. The household ultrasonic water meter network based on CAT1 according to claim 9, characterized in that: Each household ultrasonic water meter (1) further comprises a signal detection module (21) connected to the corresponding CAT1 communication module (13) for detecting the signal strength of the CAT1 communication module (13), and the pairing request unit (153) is connected to the signal detection module (21).

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