Electric energy meter with built-in Bluetooth function

Abstract

The utility model discloses an electric energy meter with a built-in Bluetooth function, and the electric energy meter with the built-in Bluetooth function comprises an electric energy meter main body and a Bluetooth module. The Bluetooth module is arranged on one side of the electric energy meter main body; the electric energy meter main body is connected with the Bluetooth module in a hot plug mode; the Bluetooth module comprises a first PCB, and a Bluetooth communication chip, a power supply circuit and a plugging port J1 which are arranged on the first PCB, the Bluetooth communication chip is connected with the electric energy meter main body through the plugging port J1, and the power supply circuit is electrically connected with the Bluetooth communication chip. The technical problems that an existing electric energy meter and a Bluetooth communication function module are integrally arranged, plug and play cannot be achieved, the later maintenance efficiency is low, and the cost is high are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric energy meters, in particular to an electric energy meter with a built-in Bluetooth function. Background Art

[0002] With the development of Internet of Things technology, smart energy meters need to connect to various energy monitoring smart terminals through Bluetooth communication so that users can view user electricity data, event information and notification content of power operators at any time, and can be connected to the energy meter through the Bluetooth function of the mobile phone, and use the matching collection APP to view data and information in real time. At present, the existing energy meters either do not have an integrated Bluetooth communication function, or integrate the Bluetooth communication function with the main board of the energy meter. This method has poor communication effect, and the communication signal is easily interfered, which seriously affects the communication effect, and is not conducive to later maintenance and upgrading. When the Bluetooth communication circuit fails, effective maintenance cannot be performed, and the entire energy meter needs to be directly replaced, which is costly. For example, the patent document with application number CN201921481798.0 discloses an embedded DC energy meter, in which the energy meter body is provided with a PCB board, and the front outer surface of the PCB board is fixedly connected with a Bluetooth module. It also cannot solve the problems of the existing energy meter and the Bluetooth communication function module being integrated, unable to plug and play, and low efficiency and high cost of later maintenance. Therefore, it is urgent to propose an electric energy meter with built-in Bluetooth function to solve the technical problems of the existing electric energy meter and the Bluetooth communication function module being integrated into an integrated layout, not being able to plug and play, and having low efficiency and high cost in subsequent maintenance. Utility Model Content

[0003] The main purpose of the utility model is to propose an electric energy meter with built-in Bluetooth function, aiming to solve the technical problems of the existing electric energy meter and the Bluetooth communication function module being integrated into an integrated layout, being unable to be plug-and-play, and having low efficiency and high cost in subsequent maintenance.

[0004] To achieve the above-mentioned purpose, the utility model provides an electric energy meter with built-in Bluetooth function, wherein the electric energy meter with built-in Bluetooth function comprises: an electric energy meter body and a Bluetooth module; the Bluetooth module is arranged on one side of the electric energy meter body; the electric energy meter body and the Bluetooth module are connected in a hot-plug manner; the Bluetooth module comprises a first PCB board and a Bluetooth communication chip, a power supply circuit and a plug interface J1 disposed on the first PCB board, the Bluetooth communication chip is connected to the electric energy meter body through the plug interface J1, and the power supply circuit is electrically connected to the Bluetooth communication chip.

[0005] In one of the preferred embodiments, the 6th pin of the Bluetooth communication chip U1 is connected to the resistor R29 and the capacitor C27 respectively, and the other end of the resistor R29 is connected to the 3rd pin of the plug interface J1; the 7th pin of the Bluetooth communication chip U1 is connected to the capacitor C29 and the resistor R27 respectively, and the other end of the resistor R27 is connected to the 4th pin of the plug interface J1; the 8th pin of the Bluetooth communication chip U1 is connected to the power supply circuit through the capacitor C35 and the capacitor C36 respectively; the 9th pin of the Bluetooth communication chip U1 is connected to the power supply circuit; the 18th pin of the Bluetooth communication chip U1 is connected to the 7th pin of the plug interface J1 through the resistor R24; the 19th pin of the Bluetooth communication chip U1 is connected to the resistor R2 0 and capacitor C30, the other end of the resistor R20 is respectively connected to pin 6 of the plug interface J1 and resistor R23, and the other end of the resistor R23 is connected to the power supply circuit; pin 23 of the Bluetooth communication chip U1 is respectively connected to resistor R30 and capacitor C32, and the other end of the resistor R30 is respectively connected to resistor R26, pin 5 of the plug interface J1 and pin 4 of the plug interface BTCN1; pin 24 of the Bluetooth communication chip U1 is connected to pin 2 of the plug interface BTCN1; pin 25 of the Bluetooth communication chip U1 is connected to pin 3 of the plug interface BTCN1; the other ends of capacitors C27, C29, C30 and C32 are grounded.

[0006] In one of the preferred solutions, the power supply circuit includes a power protection chip U805;

[0007] Pin 1 of the power protection chip U805 is connected to the Bluetooth communication chip U1 and the capacitor C112 respectively;

[0008] Pin 2 of the power protection chip U805 is grounded;

[0009] Pin 3 of the power protection chip U805 is connected to the resistor R105;

[0010] The four pins of the power protection chip U805 are connected to the resistor R831 and the resistor R907 respectively, and the other end of the resistor R831 is connected to the main body of the electric energy meter;

[0011] Pin 5 of the power protection chip U805 is connected to the power supply terminal and the capacitor C807 respectively, and the other ends of the capacitor C807, the resistor R907, the resistor R105 and the capacitor C112 are grounded.

[0012] In one of the preferred solutions, the power supply end is powered by a single power supply with an output voltage of 3.3V and an output current of 100mA.

[0013] In one of the preferred solutions, the power ripple of the power supply end is less than or equal to 100 mV.

[0014] In one of the preferred solutions, the electric energy meter body includes a second PCB board and an MCU module and a plug interface M_J1 disposed on the second PCB board; the MCU module is connected to the Bluetooth module via the plug interface M_J1.

[0015] In the above technical solution of the utility model, the electric energy meter with built-in Bluetooth function includes: an electric energy meter body and a Bluetooth module; the Bluetooth module is arranged on one side of the electric energy meter body; the electric energy meter body and the Bluetooth module are connected in a hot-swappable manner; the Bluetooth module includes a first PCB board and a Bluetooth communication chip, a power supply circuit and a plug interface J1 disposed on the first PCB board, the Bluetooth communication chip is connected to the electric energy meter body through the plug interface J1, and the power supply circuit is electrically connected to the Bluetooth communication chip. The utility model solves the technical problems of the existing electric energy meter and the Bluetooth communication function module being integrated in an integrated layout, being unable to be plug-and-play, and having low efficiency and high cost in later maintenance.

[0016] In the utility model, an independent Bluetooth module is set in the electric energy meter, and data is exchanged with the electric energy meter MCU module through the standard plug interface J1. It supports hot plugging and plug and play, and has flexible assembly. When the Bluetooth module fails, the Bluetooth communication can be located without power outage, and it does not affect the user's normal electricity consumption. The Bluetooth module can be immediately disassembled and assembled, and is easy to upgrade and maintain.

[0017] In the utility model, the Bluetooth module is powered by a single power supply of 3.3V / 100mA, and the power ripple is ≤100mV. The communication effect is not affected by the power ripple, which further improves the communication strength of the Bluetooth module.

[0018] In the utility model, the Bluetooth module adopts an independently arranged power supply circuit to realize independent power supply to the Bluetooth module. When a failure occurs in the Bluetooth module, the normal operation of other functions of the electric energy meter will not be affected, thereby realizing fault isolation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 This is a first schematic diagram of an electric energy meter with a built-in Bluetooth function according to an embodiment of the utility model;

[0021] Figure 2This is a schematic diagram of the Bluetooth communication chip U1 according to an embodiment of the present utility model;

[0022] Figure 3 A schematic diagram of a power supply circuit according to an embodiment of the utility model;

[0023] Figure 4 A schematic diagram of an MCU module according to an embodiment of the present utility model;

[0024] Figure 5 This is a second schematic diagram of an electric energy meter with a built-in Bluetooth function according to an embodiment of the utility model;

[0025] Figure 6 This is a third schematic diagram of an electric energy meter with a built-in Bluetooth function according to an embodiment of the utility model.

[0026] Description of Figure Numbers:

[0027] 1. Electric energy meter body; 11. Second PCB board; 12. MCU module; 13. Plug interface M_J1;

[0028] 2. Bluetooth module; 21. First PCB board; 22. Bluetooth communication chip; 23. Power supply circuit; 24. Plug interface J1.

[0029] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with the implementation methods and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] It should be noted that all directional indications (such as up, down, etc.) in the implementation mode of the utility model are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0033] Furthermore, the technical solutions between the various implementation modes of the present invention may be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in the field. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] See also Figure 1 According to one aspect of the utility model, the utility model provides an electric energy meter with built-in Bluetooth function, wherein the electric energy meter with built-in Bluetooth function comprises: an electric energy meter body 1 and a Bluetooth module 2; the Bluetooth module 2 is arranged on one side of the electric energy meter body 1; the electric energy meter body 1 and the Bluetooth module 2 are connected in a hot-plug manner; the Bluetooth module 2 comprises a first PCB board 21 and a Bluetooth communication chip 22, a power supply circuit 23 and a plug interface J124 disposed on the first PCB board 21, the Bluetooth communication chip 22 is connected to the electric energy meter body 1 through the plug interface J124, and the power supply circuit 23 is electrically connected to the Bluetooth communication chip 22.

[0035] Specifically, in this embodiment, pin 6 of the Bluetooth communication chip 22U1 is connected to the resistor R29 and the capacitor C27 respectively, and the other end of the resistor R29 is connected to pin 3 of the plug interface J124; pin 7 of the Bluetooth communication chip 22U1 is connected to the capacitor C29 and the resistor R27 respectively, and the other end of the resistor R27 is connected to pin 4 of the plug interface J124; pin 8 of the Bluetooth communication chip 22U1 is connected to the power supply circuit 23 through capacitors C35 and C36 respectively; pin 9 of the Bluetooth communication chip 22U1 is connected to the power supply circuit 23; pin 18 of the Bluetooth communication chip 22U1 is connected to pin 7 of the plug interface J124 through resistor R24; pin 19 of the Bluetooth communication chip 22U1 They are respectively connected to resistor R20 and capacitor C30, the other end of the resistor R20 is respectively connected to pin 6 of the plug interface J124 and resistor R23, and the other end of the resistor R23 is connected to the power supply circuit 23; pin 23 of the Bluetooth communication chip 22U1 is respectively connected to resistor R30 and capacitor C32, the other end of the resistor R30 is respectively connected to resistor R26, pin 5 of the plug interface J124 and pin 4 of the plug interface BTCN1; pin 24 of the Bluetooth communication chip 22U1 is connected to pin 2 of the plug interface BTCN1; pin 25 of the Bluetooth communication chip 22U1 is connected to pin 3 of the plug interface BTCN1; the other ends of capacitors C27, C29, C30 and C32 are grounded.

[0036] Specifically, in this embodiment, the power supply circuit 23 includes a power protection chip U805; pin 1 of the power protection chip U805 is respectively connected to the Bluetooth communication chip 22U1 and the capacitor C112; pin 2 of the power protection chip U805 is grounded; pin 3 of the power protection chip U805 is connected to the resistor R105; pin 4 of the power protection chip U805 is respectively connected to the resistor R831 and the resistor R907, and the other end of the resistor R831 is connected to the electric energy meter body 1; pin 5 of the power protection chip U805 is respectively connected to the power supply end and the capacitor C807, and the other ends of the capacitor C807, the resistor R907, the resistor R105 and the capacitor C112 are grounded; the power supply circuit 23 is used to provide power for the Bluetooth module 2, wherein the power protection chip adopts a chip model HT6035, which can achieve normal operation of other functions of the electric energy meter without affecting the failure of the Bluetooth module 2, thereby achieving fault isolation.

[0037] Specifically, in this embodiment, the power supply end is powered by a single power supply with an output voltage of 3.3V and an output current of 100mA.

[0038] Specifically, in this embodiment, the power ripple of the power supply end is less than or equal to 100mV, and the power supply adopts a power input of the power supply end with smaller power ripple, so as to avoid the Bluetooth module 2 being affected by the power ripple and ensure the communication stability of the Bluetooth module 2.

[0039] Specifically, in this embodiment, the electric energy meter body 1 includes a second PCB board 11 and an MCU module 12 and a plug interface M_J113 disposed on the second PCB board 11; the MCU module 12 is connected to the Bluetooth module 2 via the plug interface M_J113.

[0040] Specifically, in this embodiment, the Bluetooth module 2 communicates with the MCU module 12 through a serial port, wherein the communication baud rate between the Bluetooth module 2 and the MCU module 12 can be set instantly, thereby achieving communication matching between the Bluetooth module 2 and different electric energy meters; the Bluetooth module 2 is separately plated in the electric energy meter and independently set in a clear position outside the second PCB board 11 of the electric energy meter body 1, with good communication effect, and data is exchanged with the electric energy meter MCU module 12 through a standard plug interface J124. The Bluetooth module 2 and the electric energy meter body 1 are connected in a hot-swappable manner, which can achieve plug-and-play and flexible assembly. At the same time, the electric energy meter with built-in Bluetooth function supports fault recording of the Bluetooth module 2.

[0041] Specifically, in the present embodiment, the utility model of the electric energy meter with built-in Bluetooth function, the Bluetooth module 2 communicates with the MCU module 12 inside the electric energy meter through a standard plug interface, the communication module is independently arranged on one side of the electric energy meter body 1, supports hot plugging, and is easy to use. At the same time, the Bluetooth module 2 supports Bluetooth pulse verification, and sends second pulses, active pulses, harmonic pulses and other radio signals through Bluetooth modulation for error verification of the electric energy meter; the traditional electric energy meter integrates the communication function circuit of the Bluetooth module 2 on the electric energy meter, and the communication signal is easily interfered, thereby affecting the communication effect, and is not conducive to the later maintenance. protection; if the Bluetooth module 2 fails, the entire electric energy meter needs to be replaced directly; after adopting the Bluetooth module 2 that supports hot plugging, it is only necessary to replace a single Bluetooth module 2 when a communication failure occurs, and there is no need to cut off power to replace the entire electric energy meter. Upgrading and maintenance are flexible and convenient, and will not affect the user's electricity consumption; and the Bluetooth module 2 supports software upgrades and module fault records, and the communication baud rate can be set instantly, so as to flexibly match the communication requirements of different electric energy meters; at the same time, the Bluetooth module 2 is independently powered by the power supply circuit 23, and the failure of the Bluetooth module 2 will not affect the normal operation of the entire electric energy meter, thereby achieving the effect of fault isolation.

[0042] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An electric energy meter with built-in Bluetooth function, characterized in that: The electric energy meter with built-in Bluetooth function includes: an electric energy meter body and a Bluetooth module; the Bluetooth module is arranged on one side of the electric energy meter body; the electric energy meter body and the Bluetooth module are connected in a hot-plug manner; the Bluetooth module includes a first PCB board and a Bluetooth communication chip, a power supply circuit and a plug interface J1 arranged on the first PCB board, the Bluetooth communication chip is connected to the electric energy meter body through the plug interface J1, and the power supply circuit is electrically connected to the Bluetooth communication chip.

2. The electric energy meter with built-in Bluetooth function according to claim 1, characterized in that: The 6th pin of the Bluetooth communication chip U1 is connected to the resistor R29 and the capacitor C27 respectively, and the other end of the resistor R29 is connected to the 3rd pin of the plug interface J1; the 7th pin of the Bluetooth communication chip U1 is connected to the capacitor C29 and the resistor R27 respectively, and the other end of the resistor R27 is connected to the 4th pin of the plug interface J1; the 8th pin of the Bluetooth communication chip U1 is connected to the power supply circuit through the capacitor C35 and the capacitor C36 respectively; the 9th pin of the Bluetooth communication chip U1 is connected to the power supply circuit; the 18th pin of the Bluetooth communication chip U1 is connected to the 7th pin of the plug interface J1 through the resistor R24; the 19th pin of the Bluetooth communication chip U1 is connected to the resistor R20 and the capacitor C36 respectively. C30 is connected, the other end of the resistor R20 is respectively connected to the 6th pin of the plug interface J1 and the resistor R23, and the other end of the resistor R23 is connected to the power supply circuit; the 23rd pin of the Bluetooth communication chip U1 is respectively connected to the resistor R30 and the capacitor C32, and the other end of the resistor R30 is respectively connected to the resistor R26, the 5th pin of the plug interface J1 and the 4th pin of the plug interface BTCN1; the 24th pin of the Bluetooth communication chip U1 is connected to the 2nd pin of the plug interface BTCN1; the 25th pin of the Bluetooth communication chip U1 is connected to the 3rd pin of the plug interface BTCN1; the other ends of the capacitors C27, C29, C30 and C32 are grounded.

3. An electric energy meter with built-in Bluetooth function according to any one of claims 1-2, characterized in that: The power supply circuit includes a power protection chip U805; Pin 1 of the power protection chip U805 is connected to the Bluetooth communication chip U1 and the capacitor C112 respectively; Pin 2 of the power protection chip U805 is grounded; Pin 3 of the power protection chip U805 is connected to the resistor R105; The four pins of the power protection chip U805 are connected to the resistor R831 and the resistor R907 respectively, and the other end of the resistor R831 is connected to the main body of the electric energy meter; Pin 5 of the power protection chip U805 is connected to the power supply terminal and the capacitor C807 respectively, and the other ends of the capacitor C807, the resistor R907, the resistor R105 and the capacitor C112 are grounded.

4. The electric energy meter with built-in Bluetooth function according to claim 3, characterized in that: The power supply end is powered by a single power supply with an output voltage of 3.3V and an output current of 100mA.

5. The electric energy meter with built-in Bluetooth function according to claim 4, characterized in that: The power ripple of the power supply end is less than or equal to 100mV.

6. An electric energy meter with built-in Bluetooth function according to any one of claims 1-2, characterized in that: The electric energy meter body includes a second PCB board, and an MCU module and a plug interface M_J1 disposed on the second PCB board; the MCU module is connected to the Bluetooth module via the plug interface M_J1.

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