Electromagnetic water meter with Bluetooth communication function

Abstract

The utility model provides an electromagnetic water meter with a Bluetooth communication function, which relates to the technical field of water meters and comprises a water flow sensor, a Bluetooth communication module and a wireless communication module. The signal plate metering module is connected with the water flow sensor and is used for obtaining water flow information according to the water flow signal; the main control chip module is connected with the signal plate metering module and is used for receiving the water flow information of the signal plate metering module; the Bluetooth module is connected with the main control chip module and used for transmitting the water flow information of the main control chip module to terminal equipment connected with the Bluetooth module; the Bluetooth power supply module is respectively connected with the Bluetooth module, a power supply and the main control chip module; and the main control chip module is also used for controlling the Bluetooth power supply module to stop supplying power to the Bluetooth module when detecting that the Bluetooth module is in a non-working state, and controlling the Bluetooth power supply module to supply power to the Bluetooth module when detecting that the Bluetooth module is in a working state, so that the meter reading efficiency and accuracy of personnel are improved, and the energy consumption is also reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water meters, in particular to an electromagnetic water meter with a Bluetooth communication function. Background Art

[0002] At present, electromagnetic water meters are metering instruments specially designed for the water industry. During use, electromagnetic water meters can accurately calculate the water supply and water consumption. In addition, electromagnetic water meters can also work in working environments with high pollution and easy corrosion.

[0003] However, most electromagnetic water meters are often installed under manhole covers. When meter readers need to read the meters, they need to open the manhole covers to complete the meter reading operation. The whole process is rather cumbersome, with low efficiency, and there may also be situations such as missed readings and incorrect readings, resulting in errors in water volume statistics and causing serious losses to water supply companies. Summary of the Utility Model

[0004] The utility model provides an electromagnetic water meter with a Bluetooth communication function to solve the technical problem in the prior art that it is impossible to accurately and efficiently read the electromagnetic water meter.

[0005] On the one hand, the utility model provides an electromagnetic water meter with a Bluetooth communication function, including:

[0006] A water flow sensor for obtaining a water volume signal;

[0007] A signal board metering module connected to the water flow sensor for obtaining water flow information according to the water volume signal;

[0008] A main control chip module connected to the signal board metering module for receiving the water flow information of the signal board metering module;

[0009] A Bluetooth module connected to the main control chip module for transmitting the water flow information of the main control chip module to a terminal device connected to the Bluetooth module;

[0010] A Bluetooth power supply module respectively connected to the Bluetooth module, a power supply and the main control chip module;

[0011] Wherein, the main control chip module is further used to control the Bluetooth power supply module to stop supplying power to the Bluetooth module when it detects that the Bluetooth module is in a non-working state, and control the Bluetooth power supply module to supply power to the Bluetooth module when it detects that the Bluetooth module is in a working state.

[0012] According to the electromagnetic water meter with a Bluetooth communication function provided by the utility model, the Bluetooth power supply module is a triode power supply component.

[0013] According to an electromagnetic water meter with a Bluetooth communication function provided by the present utility model, the triode power supply assembly includes a PMOS transistor, a first resistor, and a second resistor;

[0014] One end of the first resistor is connected to the main control chip module, and the other end of the first resistor is respectively connected to the gate of the PMOS transistor and one end of the second resistor;

[0015] The other end of the second resistor is connected to a power supply;

[0016] The drain of the PMOS transistor is connected to the power supply terminal of the Bluetooth module, and the source is connected to the power supply;

[0017] The main control chip module is used to output a high level to control the PMOS transistor to turn off, and output a low level to control the PMOS transistor to turn on.

[0018] According to an electromagnetic water meter with a Bluetooth communication function provided by the present utility model, the Bluetooth module has two communication serial ports, is connected to the main control chip module through one communication serial port, and is connected to the serial port used by the signal board metering module to connect to the main control chip module through the other communication serial port;

[0019] When the Bluetooth module turns on the non-transparent transmission mode, a group of communication serial ports used by the Bluetooth module to connect to the signal board metering module are blocked;

[0020] When the Bluetooth module turns on the transparent transmission mode, the serial port used by the main control chip module to connect to the signal board metering module is blocked.

[0021] According to an electromagnetic water meter with a Bluetooth communication function provided by the present utility model, the Bluetooth module also has a sleep mode port, and the sleep mode port is connected to the main control chip module;

[0022] The main control chip module is used to output a low level to the sleep mode port to make the Bluetooth module enter the sleep mode.

[0023] According to an electromagnetic water meter with a Bluetooth communication function provided by the present utility model, it further includes:

[0024] A Wi-Fi module, connected to the main control chip module, for transmitting the water flow information received by the main control chip module to the water service platform.

[0025] According to an electromagnetic water meter with a Bluetooth communication function provided by the present utility model, it further includes:

[0026] A storage module, connected to the main control chip module, for storing the water flow information received by the main control chip module.

[0027] According to an electromagnetic water meter with Bluetooth communication function provided by the present utility model, the storage module is a Flash storage module.

[0028] According to an electromagnetic water meter with Bluetooth communication function provided by the present utility model, it further includes:

[0029] An LCD display module, connected to the main control chip module, for realizing human-computer interaction.

[0030] According to an electromagnetic water meter with Bluetooth communication function provided by the present utility model, it further includes:

[0031] An infrared module, connected to the main control chip module, for transmitting the water flow information of the main control chip module to a terminal device connected to the infrared module.

[0032] The electromagnetic water meter with Bluetooth communication function provided by the present utility model includes a water flow sensor, a signal board metering module, a main control chip module, a Bluetooth module, and a Bluetooth power supply module. The signal board metering module is separated from the main control chip module, and the signal board metering module is directly connected to the water flow sensor, reducing the length of the signal lines for connection, which can reduce the loss of induced electrical signals during transmission and is beneficial to improving the accuracy of water flow information. The Bluetooth module is connected to the main control chip module for transmitting the water flow information of the main control chip module to a terminal device connected to the Bluetooth module, which can reduce the operation steps of personnel during the meter reading process and can also avoid the situations of misreading and missing reading, improving the efficiency and accuracy of meter reading. Moreover, when the main control chip module detects that the Bluetooth module is in a non-working state, it controls the Bluetooth power supply module to disconnect, so that the Bluetooth module and the power supply are disconnected, thereby stopping the Bluetooth module from working, reducing power consumption, and saving energy costs. Description of the Drawings

[0033] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0034] Figure 1 is a schematic structural diagram of an electromagnetic water meter with Bluetooth communication function provided by an embodiment of the present utility model;

[0035] Figure 2 is a schematic structural diagram of the Bluetooth power supply module provided by an embodiment of the present utility model;

[0036] Figure 3It is a schematic structural diagram of a Bluetooth module provided by an embodiment of the present utility model;

[0037] Figure 4 It is a partial schematic structural diagram of a signal board metering module provided by an embodiment of the present utility model;

[0038] Figure 5 It is a schematic structural diagram of a main control chip module provided by an embodiment of the present utility model. Detailed implementation manners

[0039] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without making creative efforts fall within the protection scope of the present utility model.

[0040] Figure 1 It is a schematic structural diagram of an electromagnetic water meter with Bluetooth communication function provided by an embodiment of the present utility model; Figure 2 It is a schematic structural diagram of a Bluetooth power supply module provided by an embodiment of the present utility model; Figure 3 It is a schematic structural diagram of a Bluetooth module provided by an embodiment of the present utility model; Figure 4 It is a partial schematic structural diagram of a signal board metering module provided by an embodiment of the present utility model; Figure 5 It is a schematic structural diagram of a main control chip module provided by an embodiment of the present utility model.

[0041] Refer to Figures 1 to 5 , the electromagnetic water meter 20 with Bluetooth communication function may include a water flow sensor 201, a signal board metering module 202, a main control chip module 203, a Bluetooth module 204 and a Bluetooth power supply module 205.

[0042] The water flow sensor 201 is used to obtain a water volume signal. Specifically, for example, the water flow sensor 201 is used to convert the physical quantity of the water flow rate in the pipeline into an induced electrical signal (the electrical signal may be a voltage signal) and transmit it to the signal board metering module 202.

[0043] The signal board metering module 202 is connected to the water flow sensor 201 and is used to obtain water flow information based on the water volume signal. For example, the signal board metering module 202 can use the internal ADC acquisition unit to receive the induced electrical signal from the water flow sensor 201 and accurately convert it into a flow value. The signal board metering module 202 can perform processing such as filtering and amplifying the received induced electrical signal, and convert the electrical signal into water flow information representing the flowing water in the pipeline. The water flow information can include the instantaneous flow rate of the water in the pipeline, and can also include positive cumulative flow, reverse cumulative flow, net cumulative flow, etc. Of course, the water flow information can also include the internal parameters of the electromagnetic water meter 20 (such as range, caliber, zero point, and calibration coefficient, etc.).

[0044] The main control chip module 203 is connected to the signal board metering module 202 and is used to receive the water flow information of the signal board metering module 202.

[0045] The Bluetooth module 204 is connected to the main control chip module 203 and is used to transmit the water flow information of the main control chip module 203 to the terminal device connected to the Bluetooth module 204. The terminal device can be a mobile phone, a smart wearable device, etc.

[0046] The Bluetooth power supply module 205 is respectively connected to the Bluetooth module 204, the power supply, and the main control chip module 203.

[0047] Among them, the main control chip module 203 is also used to control the Bluetooth power supply module 205 to stop supplying power to the Bluetooth module 204 when it detects that the Bluetooth module 204 is in a non-working state, and control the Bluetooth power supply module 205 to supply power to the Bluetooth module 204 when it detects that the Bluetooth module 204 is in a working state. The non-working state can also be understood as a non-start state. The working state can also be understood as a start state.

[0048] In this embodiment, the signal board metering module 202 is separated from the main control chip module 203, and the signal board metering module 202 is directly connected to the water flow sensor 201, which reduces the length of the signal line for connection, can reduce the loss of the induced electrical signal during transmission, and is beneficial to improving the accuracy of the water flow information. The Bluetooth module 204 is connected to the main control chip module 203 and is used to transmit the water flow information of the main control chip module 203 to the terminal device connected to the Bluetooth module 204, which can reduce the operation steps of personnel during the meter reading process, and can also avoid the situation of misreading and missing reading, improving the efficiency and accuracy of meter reading. And, the main control chip module 203 is also used to control the Bluetooth power supply module 205 to disconnect when it detects that the Bluetooth module 204 is in a non-working state, so that the Bluetooth module 204 and the power supply are disconnected, so that the Bluetooth module 204 stops working, reducing power consumption and saving energy costs.

[0049] In an embodiment of the present specification, the Bluetooth power supply module 205 may be a triode power supply component.

[0050] In this embodiment, the main control chip module 203 controls the disconnection and conduction of the triode power supply component, thereby realizing the disconnection and conduction between the Bluetooth module 204 and the power supply, which is very simple and convenient.

[0051] In an embodiment of the present specification, the triode power supply component may include a PMOS transistor Q8, a first resistor R81, and a second resistor R79.

[0052] One end (label CTL_3V0_BLE) of the first resistor R81 is connected to the main control chip module 203, and the other end of the first resistor R81 is respectively connected to the gate of the PMOS transistor Q8 and one end of the second resistor R79.

[0053] The other end of the second resistor R79 is connected to the power supply 3V0.

[0054] The drain (label 3V0 - BLE) of the PMOS transistor Q8 is connected to the power supply terminal of the Bluetooth module 204, and the source is connected to the power supply 3V0.

[0055] The main control chip module 203 is used to output a high level to control the PMOS transistor Q8 to disconnect, and is used to output a low level to control the PMOS transistor Q8 to conduct.

[0056] In this embodiment, a working flag bit of the Bluetooth module 204 may be set in the main control chip module 203, and the working state of the Bluetooth module 204 can be judged by detecting the working flag bit. For example, when the working flag bit is 1, it means that the Bluetooth module 204 is in the working state, and when the working flag bit is 0, it means that the Bluetooth module 204 is in the non - working state. When the display interface of the electromagnetic water meter 20 changes, the flag bit can be triggered to change. For example, it changes from 0 to 1. If the display interface does not change for a long time, the flag bit becomes 0. Or, when the light in the environment where the electromagnetic water meter 20 is located changes, the flag bit can also be triggered to change. For example, it changes from 0 to 1.

[0057] The model of the main control chip module 203 can be the MSP430 series, for example, MSP430F6747AIPZ, or it can be other models, which are not specifically limited in this embodiment. When the model of the main control chip module 203 is MSP430F6747AIPZ, one end of the first resistor R81 (label CTL_3V0_BLE) can be connected to the output pin 62 (I / O port P4.3) of the main control chip module 203. When the main control chip module 203 detects that the Bluetooth module 204 is in a non-working state, it controls the pin (for example, pin 62 (I / O port P4.3)) to output a high level. There is no voltage difference between the gate and the source of the PMOS transistor Q8, and the PMOS transistor Q8 is turned off, without voltage output, that is, there is no voltage input at the power supply terminal of the Bluetooth module 204, and the Bluetooth module 204 is not turned on. When the main control chip module 203 detects that the Bluetooth module 204 is in a working state, it controls the pin (for example, pin 62 (I / O port P4.3)) to output a low level. There is a negative voltage between the gate and the source of the PMOS transistor Q8, which is greater than the on-voltage drop of the PMOS transistor Q8. The PMOS transistor Q8 is turned on, and 3.0V is output at the drain, that is, the Bluetooth module 204 is connected to the power supply 3V0, and the Bluetooth module 204 is turned on.

[0058] In this embodiment, the resistance values of the first resistor R81 and the second resistor R79 can be selected according to the actual situation, which are not specifically limited in this embodiment. The PMOS transistor Q8 is equivalent to the switch of the power supply, and it is very easy to implement the power-on and power-off control. Moreover, the PMOS transistor Q8 requires a very low on-voltage and has a very low on-loss, which is also beneficial to achieving the effect of saving energy. The model of the Bluetooth module 204 can be WLT8258. Of course, other models can also be selected, which are not specifically limited in this embodiment.

[0059] In an embodiment of this specification, the Bluetooth module 204 further has a sleep mode port, and the sleep mode port is connected to the main control chip module 203;

[0060] The main control chip module 203 is used to output a low level to the sleep mode port to make the Bluetooth module 204 enter the sleep mode.

[0061] In this embodiment, for example, when the model of the Bluetooth module 204 is WLT8258, the sleep mode port can include the input port PD4, with the label CTL_BLE. The main control chip module 203 is connected to the input port PD4 through the output pin (for example, pin 70 (I / O port P5.3)), outputs a low level to the input port PD4 to make the Bluetooth module 204 enter the sleep mode, reduce energy consumption, and outputs a high level to the input port PD4 to make the Bluetooth module 204 enter the non-sleep mode, that is, the active mode, to make the Bluetooth module 204 work normally.

[0062] In this embodiment, before the Bluetooth module 204 enters the sleep mode, it is also possible to determine whether the Bluetooth module 204 has established a connection with the terminal device. If no connection is established, the Bluetooth module 204 can be made to enter the sleep mode to reduce power consumption. If a connection has been established, the Bluetooth module 204 is made to enter the active mode so that it can work properly.

[0063] Specifically, for example, the sleep mode port may further include an output port PB4 labeled as CHK_BLE. The main control chip module 203 is connected to the output port PB4 through an input pin (such as pin 69 (I / O port P5.2)). When the Bluetooth module 204 has not established a connection with the terminal device, a low level is output to the input pin of the main control chip module 203 (such as pin 69 (I / O port P5.2)) through the output port PB4. After receiving the low level, the main control chip module 203 outputs a low level to the input port PD4 of the Bluetooth module 204 through an output pin (such as pin 70 (I / O port P5.3)) to start the sleep mode. Similarly, when the Bluetooth module 204 has established a connection with the terminal device, a high level is output to the input pin of the main control chip module 203 through the output port PB4. After receiving the high level, the main control chip module 203 outputs a high level to the input port PD4 of the Bluetooth module 204 through an output pin to start the active mode.

[0064] In this embodiment, the Bluetooth module 204 supports the low power consumption mode, and the low power consumption mode is set to be awakened by an external interrupt, that is, when the sleep mode port of the Bluetooth module 204 is connected to a low level, the Bluetooth module 204 is in the low power consumption sleep mode, and when the sleep mode port of the Bluetooth module 204 is connected to a high level, the Bluetooth module 204 enters the active state and is in the normal working mode.

[0065] In an embodiment of this specification, the Bluetooth module 204 has two sets of communication serial ports. One set of communication serial ports is connected to the main control chip module 203, and the other set of communication serial ports is connected to the serial port used by the signal board metering module 202 to connect to the main control chip module 203.

[0066] When the Bluetooth module 204 enables the non-transparent transmission mode, one set of communication serial ports used by the Bluetooth module 204 to connect to the signal board metering module 202 is blocked.

[0067] When the Bluetooth module 204 enables the transparent transmission mode, the serial port used by the main control chip module 203 to connect to the signal board metering module 202 is blocked.

[0068] In this embodiment, the non-transparent transmission mode is the default mode of the electromagnetic water meter. That is, when the electromagnetic water meter is working, the Bluetooth module 204 defaults to enter the non-transparent transmission mode. The non-transparent transmission mode can indicate that the Bluetooth module 204 only communicates with the main control chip module 203. The transparent transmission mode can indicate that the Bluetooth module 204 only communicates with the signal board metering module 202.

[0069] For example, when the model of the Bluetooth module 204 is WLT8258, a group of communication serial ports connected to the main control chip module 203 includes pin 17 (label TXD_BLE) and pin 16 (label RXD_BLE). Pin 17 (label TXD_BLE) is connected to pin 58 of the main control chip module 203, and pin 16 (label RXD_BLE) is connected to pin 57 of the main control chip module 203, so that data is transmitted between the Bluetooth module 204 and the main control chip module 203.

[0070] Another group of communication serial ports of the Bluetooth module 204 includes pin 4 (label BLE_TXD_Z) and pin 9 (label BLE_RXD_Z). When the Bluetooth module 204 of the WLT8258 model performs dual-serial-port communication, pin 4 (label BLE_TXD_Z) can be used as the read data pin of the Bluetooth module 204, and pin 9 (label BLE_RXD_Z) can be used as the write data pin of the Bluetooth module 204. Figure 4 Pin 3 of the middle row pin JP1 is connected to the read data pin of the signal board metering module 202, and pin 4 is connected to the write data pin of the signal board metering module 202. Diodes VD1, VD2, VD3, and VD5 are respectively connected to pin 4 (label BLE_TXD_Z) of the Bluetooth module 204, pin 56 (label MCU_TXD_Z) of the main control chip module 203, pin 9 (label BLE_RXD_Z) of the Bluetooth module 204, and pin 55 (label MCU_RXD_Z) of the main control chip module 203.

[0071] In this embodiment, when the Bluetooth module 204 enables the non-transparent transmission mode, the pins (such as pin 4 and pin 9) of the Bluetooth module 204 used to connect to the signal board metering module 202 are shielded. At this time, the Bluetooth module 204 can only communicate with the main control chip module 203, and the main control chip module 203 (pins 55 and 56) communicates with the signal board metering module 202.

[0072] When the Bluetooth module 204 enables the transparent transmission mode, the pins (pin 55 and pin 56) of the main control chip module 203 used to connect to the signal board metering module 202 are shielded, enabling the Bluetooth module 204 to communicate with the signal board metering module 202. Thus, software upgrades can be performed on the signal board metering module 202 through the Bluetooth module 204, and operations such as directly reading the data in the signal board metering module 202 can be carried out. Additionally, interference to the main control chip module 203 during this communication process is avoided. In this embodiment, while minimizing interface occupation, the function of flexible communication between the Bluetooth module 204, the main control chip module 203, and the signal board metering module 202 is achieved, which is very flexible and convenient.

[0073] Specifically, when the host computer issues an instruction to enable the transparent transmission mode, after the Bluetooth module 204 receives the instruction to enable the transparent transmission mode, it sends the instruction to the main control chip module 203, then shields the main communication serial port pins 16 and 17 of the Bluetooth module 204, and enables the second communication serial port pins 4 and 9 of the Bluetooth module 204 to connect to the signal board metering module 202. After receiving the instruction to enable the transparent transmission mode, the main control chip module 203 shields pin 55 and pin 56, completing the communication between the Bluetooth module 204 and the signal board circuit, and at the same time avoiding interference to the main control chip module 203 during communication. When the host computer sends an instruction to disable the transparent transmission mode, after the Bluetooth module 204 receives the instruction to disable the transparent transmission mode, it shields the second communication serial port pins 4 and 9, enables the main communication serial port pins 16 and 17, and then sends the instruction to the main control chip module 203. After receiving the instruction, the main control chip module 203 enables the signal board communication serial port pins 55 and 56, restoring the communication between the Bluetooth module 204 and the main control chip module 203 when the Bluetooth module 204 is not in the transparent transmission mode, as well as the communication between the main control chip module 203 and the signal board metering module 202. Pins 16 and 17 can be regarded as the main communication serial port pins, and pins 4 and 9 can be regarded as the second communication serial port pins, that is, the secondary communication serial port pins.

[0074] In an embodiment of this specification, the electromagnetic water meter 20 with Bluetooth communication function may further include a Wireless Fidelity (Wi-Fi) module.

[0075] The Wi-Fi module 206 is connected to the main control chip module 203 and is used to transfer the water flow information received by the main control chip module 203 to the water service platform.

[0076] In this embodiment, the Wi-Fi module 206 is connected to the main control chip module 203 and is used to transfer the water flow information received by the main control chip module 203 to the water service platform so that relevant personnel can timely understand the water flow information through the water service platform.

[0077] In an embodiment of this specification, the electromagnetic water meter 20 with Bluetooth communication function may further include a storage module 207.

[0078] The storage module 207 is connected to the main control chip module 203 and is used to store the water flow information received by the main control chip module 203.

[0079] In this embodiment, the storage module 207 is connected to the main control chip module 203 and is used to store the water flow information received by the main control chip module 203, which is convenient for relevant personnel to query previous historical information records. The storage module 207 is a Flash storage module.

[0080] In an embodiment of this specification, the electromagnetic water meter 20 with Bluetooth communication function may further include an LCD display module 208.

[0081] The LCD display module 208 is connected to the main control chip module 203 and is used to implement human-computer interaction.

[0082] In this embodiment, the LCD display module 208 may include a display unit and an operation unit. The display unit can display water flow information. The operation unit can receive operations and set the information of the main control chip module 203 according to the received operations.

[0083] In an embodiment of this specification, the electromagnetic water meter 20 with Bluetooth communication function may further include an infrared module 209.

[0084] The infrared module 209 is connected to the main control chip module 203 and is used to transmit the water flow information of the main control chip module 203 to the terminal device connected to the infrared module 209.

[0085] In this embodiment, the infrared module 209 is connected to the main control chip module 203 and is used to transmit the water flow information of the main control chip module 203 to the terminal device connected to the infrared module 209, which is very convenient.

[0086] In the above embodiments, only Figures 1 to 5 the pins or ports applied are introduced. For other unused functions, they are not listed one by one here. Those skilled in the art can understand Figures 1 to 5 the solutions included therein.

[0087] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art can understand and implement it without creative effort.

[0088] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on such an understanding, the essence of the above technical solution, or the part that contributes to the prior art, can be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., including several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of each embodiment of the present invention.

Claims

1. An electromagnetic water meter with Bluetooth communication function, characterized in that, Including: A water flow sensor for obtaining a water volume signal; A signal board metering module connected to the water flow sensor for obtaining water flow information according to the water volume signal; A main control chip module connected to the signal board metering module for receiving the water flow information of the signal board metering module; A Bluetooth module connected to the main control chip module for transmitting the water flow information of the main control chip module to a terminal device connected to the Bluetooth module; A Bluetooth power supply module respectively connected to the Bluetooth module, a power supply and the main control chip module; Wherein, the main control chip module is further configured to control the Bluetooth power supply module to stop supplying power to the Bluetooth module when detecting that the Bluetooth module is in a non-working state, and control the Bluetooth power supply module to supply power to the Bluetooth module when detecting that the Bluetooth module is in a working state.

2. The electromagnetic water meter with Bluetooth communication function according to claim 1, characterized in that, The Bluetooth power supply module is a triode power supply component.

3. The electromagnetic water meter with Bluetooth communication function according to claim 2, characterized in that, The triode power supply component includes a PMOS transistor, a first resistor and a second resistor; One end of the first resistor is connected to the main control chip module, and the other end of the first resistor is respectively connected to the gate of the PMOS transistor and one end of the second resistor; The other end of the second resistor is connected to the power supply; The drain of the PMOS transistor is connected to the power supply terminal of the Bluetooth module, and the source is connected to the power supply; The main control chip module is configured to output a high level to control the PMOS transistor to turn off, and output a low level to control the PMOS transistor to turn on.

4. The electromagnetic water meter with Bluetooth communication function according to claim 1, characterized in that, The Bluetooth module has two groups of communication serial ports, is connected to the main control chip module through one group of communication serial ports, and is connected to the serial port used by the signal board metering module to connect to the main control chip module through the other group of communication serial ports; When the Bluetooth module enables the non-transparent transmission mode, one group of communication serial ports used by the Bluetooth module to connect to the signal board metering module is blocked; When the Bluetooth module enables the transparent transmission mode, the serial port used by the main control chip module to connect to the signal board metering module is blocked.

5. The electromagnetic water meter with Bluetooth communication function according to claim 1, characterized in that, The Bluetooth module further has a sleep mode port, and the sleep mode port is connected to the main control chip module; The main control chip module is configured to output a low level to the sleep mode port to enable the Bluetooth module to enter the sleep mode.

6. The electromagnetic water meter with Bluetooth communication function according to claim 1, characterized in that, Also including: A Wi-Fi module connected to the main control chip module for transmitting the water flow information received by the main control chip module to a water service platform.

7. The electromagnetic water meter with Bluetooth communication function according to claim 1, characterized in that, Also including: A storage module connected to the main control chip module for storing the water flow information received by the main control chip module.

8. The electromagnetic water meter with Bluetooth communication function according to claim 7, characterized in that, The storage module is a Flash storage module.

9. The electromagnetic water meter with Bluetooth communication function according to claim 1, characterized in that, Also including: An LCD display module connected to the main control chip module for realizing human-computer interaction.

10. The electromagnetic water meter with Bluetooth communication function according to claim 1, characterized in that, Also including: An infrared module connected to the main control chip module for transmitting the water flow information of the main control chip module to a terminal device connected to the infrared module.

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