Intelligent prepayment water meter based on LoRaWAN and Bluetooth communication

Abstract

The utility model provides an intelligent prepayment water meter based on LoRaWAN and Bluetooth communication, which solves the problems that the communication distance of the water meter is limited and the like, and comprises a water meter main body, a water meter chip is arranged in the water meter main body, the water meter chip is provided with a Bluetooth module, the water meter chip is connected with a LoRaWAN communication module, and the LoRaWAN communication module is connected with the Bluetooth module. And the Bluetooth module and the LoRaWAN communication module are in wireless communication connection with a server or a user platform. The system has the advantages of stable communication, high safety and the like.

Description

Technical Field

[0001] This utility model belongs to the field of smart meter technology, specifically relating to a smart prepaid water meter based on LoRaWAN and Bluetooth communication. Background Technology

[0002] Against the backdrop of rapid development in smart city construction and IoT technology, traditional mechanical water meters can no longer meet the demands of modern society for refined water resource management and efficient operation. With the acceleration of urbanization and the continuous increase in residential water consumption, how to achieve effective water resource allocation, reduce waste, and improve billing efficiency has become an urgent problem to be solved. The development of wireless communication smart prepaid water meter series products is based on this market demand and technological advancements. By integrating advanced wireless communication technology and intelligent control modules, these products can achieve functions such as remote meter reading, real-time monitoring of water usage, and automatic billing. This not only greatly reduces labor costs and improves the accuracy and timeliness of data collection, but also allows users to prepay water fees, and the system will promptly remind or even stop water supply when the account balance is insufficient, thus effectively avoiding arrears. However, in practical applications, the communication distance of existing water meters is limited, and the security and reliability of data transmission cannot be guaranteed.

[0003] To address the shortcomings of existing technologies, people have conducted long-term explorations and proposed various solutions. For example, Chinese patent literature discloses a smart ultrasonic water meter based on LoRaWAN communication [202420259772.6], which includes a water meter body, a control board, a display screen, and multiple communication modules. The control board is mounted on the water meter body, and the display screen is mounted on the control board and electrically connected to the water meter body. The control board has multiple slots into which the communication modules are inserted. The multiple communication modules correspond one-to-one with the multiple slots and are electrically connected to the water meter body.

[0004] The above solution has solved the problem of water meter data collection and transmission to a certain extent, but it still has many shortcomings, such as limited communication distance and poor transmission security. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a reasonably designed and stable smart prepaid water meter based on LoRaWAN and Bluetooth communication.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a smart prepaid water meter based on LoRaWAN and Bluetooth communication, comprising a water meter body, a water meter chip built into the water meter body and the water meter chip equipped with a Bluetooth module, the water meter chip being connected to a LoRaWAN communication module, and the Bluetooth module and the LoRaWAN communication module being wirelessly connected to a server or user platform.

[0007] In the aforementioned smart prepaid water meter based on LoRaWAN and Bluetooth communication, the water meter chip is connected to an LCD display module and a touch button module.

[0008] In the aforementioned smart prepaid water meter based on LoRaWAN and Bluetooth communication, the water meter chip is equipped with a sensing module and a valve control module.

[0009] In the aforementioned smart prepaid water meter based on LoRaWAN and Bluetooth communication, the sensing module includes a forward sensor and a reverse sensor, both of which are Hall effect sensors.

[0010] In the aforementioned smart prepaid water meter based on LoRaWAN and Bluetooth communication, the sensing module includes a magnetic field detection module.

[0011] In the aforementioned smart prepaid water meter based on LoRaWAN and Bluetooth communication, the valve control module includes a motor drive module, which is equipped with a control feedback line interface.

[0012] In the aforementioned smart prepaid water meter based on LoRaWAN and Bluetooth communication, the meter chip is connected to a storage module.

[0013] In the aforementioned smart prepaid water meter based on LoRaWAN and Bluetooth communication, the water meter chip is connected to a battery, and a power control module is installed between the battery and the water meter chip; the battery is a replaceable lithium battery.

[0014] In the aforementioned smart prepaid water meter based on LoRaWAN and Bluetooth communication, the LoRaWAN communication module is connected in parallel with several water meter bodies.

[0015] In the aforementioned smart prepaid water meter based on LoRaWAN and Bluetooth communication, the Bluetooth module is integrated into the water meter chip, while the LoRaWAN communication module uses a terminal radio frequency chip.

[0016] Compared with existing technologies, the advantages of this utility model are as follows: it uses Bluetooth and LoRaWAN technologies to achieve remote data transmission, taking into account both short-range and long-range communication, and has good communication stability; it has multiple built-in sensor modules to monitor water volume and valve status in real time, thereby sending alarm signals in a timely manner; the LoRaWAN communication module supports timed signal transmission, thereby reducing its overall power consumption and extending the working time of the water meter. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a communication principle diagram of this utility model;

[0019] Figure 3 This is a circuit diagram of the water meter chip and Bluetooth module of this utility model;

[0020] Figure 4 This is a circuit diagram of the LoRaWAN communication module of this utility model;

[0021] In the diagram, the components are: water meter chip 1, battery 11, power control module 12, Bluetooth module 2, LoRaWAN communication module 3, server 4, user platform 5, LCD display module 6, touch button module 61, sensing module 7, forward sensor 71, reverse sensor 72, magnetic field detection module 73, valve control module 8, motor drive module 81, control feedback line interface 82, and storage module 9. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 1-4 As shown, a smart prepaid water meter based on LoRaWAN and Bluetooth communication includes a water meter body, a low-power water meter chip 1 built into the water meter body, and a Bluetooth module 2. The water meter chip 1 is connected to a LoRaWAN communication module 3. The Bluetooth module 2 and the LoRaWAN communication module 3 are wirelessly connected to a server 4 or a user platform 5. The LoRaWAN communication module 3 can be any one or more combinations of SX1278, SX12786, and SX1262, and its LoRa modulation method increases the communication distance of the water meter.

[0024] Specifically, the water meter chip 1 is connected to an LCD display module 6 and a touch button module 61, which are integrated to realize touch display, making it convenient for users to view water volume information.

[0025] Furthermore, the water meter chip 1 is equipped with a sensing module 7 and a valve control module 8.

[0026] In addition, the sensing module 7 includes a forward sensor 71 and a reverse sensor 72, both of which are Hall effect sensors. A magnet is installed on the rotating disc of the water meter body. The forward sensor 71 and the reverse sensor 72 collect the number of rotations of the disc, thereby accumulating and calculating the water volume.

[0027] Meanwhile, the sensing module 7 includes a magnetic field detection module 73. When it detects an abnormal magnetic field, it reports it to the server 4 or the user platform 5 for verification through the LoRaWAN communication module 3.

[0028] As can be seen, the valve control module 8 includes a motor drive module 81, which is equipped with a control feedback line interface 82 and works with the LoRaWAN communication module 3 to realize valve control.

[0029] It is obvious that the water meter chip 1 is connected to the storage module 9.

[0030] Preferably, the water meter chip 1 is connected to a battery 11, and a power control module 12 is provided between the battery 11 and the water meter chip 1; the battery 11 is a replaceable lithium battery 11. The battery 11 can be removed and replaced, and under normal circumstances, no external power supply is required, but it can also be connected to an external power source for charging.

[0031] In addition, the LoRaWAN communication module 3 works with the LoRaWAN gateway to connect several water meters in parallel, enabling remote reading and setting of multiple sets of water meter data and parameters. LoRaWAN communication is triggered in several ways: first, daily scheduled information upload; second, long press of a button for 5 seconds followed by information upload; and third, event-triggered information upload. After the water meter transmits information to the LoRaWAN gateway via LoRaWAN, the LoRaWAN gateway connects to the server via Ethernet cable or Wi-Fi. When the server receives the water meter information, it sends corresponding operation information, such as recharging or closing / closing the valve. After uploading information via LoRaWAN, the water meter waits for a response from the server. Upon receiving a response or after a timeout, the water meter enters a low-power mode.

[0032] like Figure 3-4 As shown, Bluetooth module 2 is integrated on water meter chip 1, and LoRaWAN communication module 3 uses a terminal radio frequency chip. Bluetooth module 2 meets the requirements for short-range communication with a communication distance greater than 10m, while LoRaWAN communication module 3 performs long-range communication with a communication distance greater than 1km.

[0033] In summary, the principle of this embodiment is as follows: the water meter chip 1 in the water meter body integrates a Bluetooth module 2 to meet the short-range communication requirements, and is equipped with a LoRaWAN communication module 3 to realize remote data transmission between the server 4 or the user platform 5, so that users and managers can obtain water meter information and manage the water meter. The LoRaWAN communication module 3 supports low power mode to realize long-term monitoring of the water meter.

[0034] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0035] Although this document frequently uses terms such as water meter chip 1, battery 11, power control module 12, Bluetooth module 2, LoRaWAN communication module 3, server 4, user platform 5, LCD display module 6, touch button module 61, sensing module 7, forward sensor 71, reverse sensor 72, magnetic field detection module 73, valve control module 8, motor drive module 81, control feedback line interface 82, and storage module 9, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A smart prepayment water meter based on LoRaWAN and Bluetooth communication, comprising a water meter main body, characterized in that, The water meter body has a built-in water meter chip (1) and the water meter chip (1) is equipped with a Bluetooth module (2). The water meter chip (1) is connected to a LoRaWAN communication module (3). The Bluetooth module (2) and the LoRaWAN communication module (3) are wirelessly connected to the server (4) or the user platform (5).

2. The smart prepayment water meter based on LoRaWAN and Bluetooth communication according to claim 1, characterized in that, The water meter chip (1) is connected to an LCD display module (6) and a touch button module (61).

3. The smart prepayment water meter based on LoRaWAN and Bluetooth communication according to claim 1, characterized in that, The water meter chip (1) is equipped with a sensing module (7) and a valve control module (8).

4. The smart prepayment water meter based on LoRaWAN and Bluetooth communication according to claim 3, characterized in that, The sensing module (7) includes a forward sensor (71) and a reverse sensor (72), which are Hall effect sensors.

5. The smart prepayment water meter based on LoRaWAN and Bluetooth communication according to claim 3, characterized in that, The sensing module (7) includes a magnetic field detection module (73).

6. The smart prepayment water meter based on LoRaWAN and Bluetooth communication according to claim 3, characterized in that, The valve control module (8) includes a motor drive module (81), which is equipped with a control feedback line interface (82).

7. The smart prepayment water meter based on LoRaWAN and Bluetooth communication according to claim 1, characterized in that, The water meter chip (1) is connected to a storage module (9).

8. The smart prepayment water meter based on LoRaWAN and Bluetooth communication according to claim 1, characterized in that, The water meter chip (1) is connected to a battery (11), and a power control module (12) is provided between the battery (11) and the water meter chip (1); the battery (11) is a replaceable lithium battery (11).

9. The smart prepayment water meter based on LoRaWAN and Bluetooth communication according to claim 1, characterized in that, The LoRaWAN communication module (3) is connected in parallel with several water meter bodies.

10. The smart prepayment water meter based on LoRaWAN and Bluetooth communication according to claim 1, characterized in that, The Bluetooth module (2) is integrated on the water meter chip (1), and the LoRaWAN communication module (3) is a terminal radio frequency chip.

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