Single-phase electronic electric energy meter based on NB-IoT and Bluetooth communication

Abstract

The utility model is suitable for the technical field of intelligent electric meters, and relates to a single-phase electronic electric energy meter based on NB-IoT and Bluetooth communication, which comprises an electric energy metering unit, a data processing unit, a power supply unit, an input / output unit and a communication interface unit, a metering chip of the electric energy metering unit is respectively in communication connection with a microcontroller, a power supply unit and an input and output unit of the data processing unit, and the power supply unit and the input and output unit are respectively in communication connection with the microcontroller; the communication interface unit comprises an NB-IoT interface module and a Bluetooth interface module, and the NB-IoT interface module and the Bluetooth interface module are in communication connection with the microcontroller. According to the utility model, the structure is simple, the communication is convenient, the uplink is directly communicated with the acquisition master station through the NB-IoT communication mode, the downlink is interacted with the user mobile phone through the Bluetooth mode, the wiring is less, and the cost is lower.

Description

TECHNICAL FIELD

[0001] The utility model belongs to intelligent electric meter technical field especially relates to a single -phase electronic type electric energy meter based on NB -IoT and bluetooth communication. BACKGROUND

[0002] NB-IoT communication technology is a new technology in the field of wireless transmission, supports low power consumption device in wide area network cellular data connection, also called low power wide area network (LPWAN), can provide 100,000 connections under the bandwidth of 200kHz, has the characteristics of wide coverage, many connections, low speed, low cost, low power consumption, optimal architecture, is suitable for the internet of things device that does not move frequently. Therefore, NB-IoT communication technology is applied to the internet of things electric meter, and it will be the development trend of the internet of things electric meter.

[0003] The uplink communication mode of the single-phase meter of the State Grid is power line carrier, and data needs to be reported to the collection master station through the concentrator, the device and the construction cost are high, and it is suitable for large-scale collection; the downlink communication mode of the single-phase meter of the State Grid is RS485 and far infrared, in the full carrier area, RS485 is basically not used, in the half carrier area, each meter box is equipped with a collector, is connected by RS485 line one to many, the wiring is complex, and the cost is also high, and the far infrared function is mainly used for meter reading with the palm computer on the spot; the single-phase meter of the State Grid needs to record the customer number and the communication address during installation, and the record error will lead to device reading failure and communication inconvenience. The patent application with publication number CN116773904A provides a power outage reporting method and system for RS485 electric energy meter, the system comprises: the system comprises: a concentrator, a plurality of electric energy meters, the concentrator is connected with a plurality of electric energy meters through RS485 bus; the plurality of electric energy meters are used for detecting the power outage signal of any one electric energy meter, and the electric energy meter sends a self-expanding measurement power outage reporting protocol frame to the RS485 bus; the concentrator is used for receiving the self-expanding measurement power outage reporting protocol frame from the electric energy meter through the RS485 bus when being in the receiving state, and completing power outage event collection. The communication mode of the electric meter in the patent application is also RS485, connected in one to many mode, and also needs to be reported to the master station through the concentrator, the wiring is complex, and the communication is inconvenient, and has the same disadvantages as the prior art.

[0004] Therefore, how to provide an electric meter with convenient communication, less wiring and low cost is a problem to be solved by the technical personnel in the technical field. UTILITY MODEL CONTENT

[0005] In view of the defects of the prior art, the utility model aims at providing a single-phase electronic type electric energy meter based on NB-IoT and bluetooth communication, so as to solve the problems of inconvenient communication, complex wiring and high cost of the electric meter in the prior art.

[0006] To solve the above technical problems, the utility model adopts the following technical scheme:

[0007] The utility model provides a single -phase electronic type electric energy meter based on NB -IoT and bluetooth communication, include:

[0008] Electric energy measurement unit, data processing unit, power supply unit, input output unit and communication interface unit,

[0009] The measurement chip of electric energy measurement unit is connected with microcontroller, power supply unit, input output unit of data processing unit respectively, power supply unit, input output unit are connected with microcontroller respectively,

[0010] The communication interface unit includes NB -IoT interface module and bluetooth interface module, and the NB -IoT interface module and bluetooth interface module are connected with microcontroller respectively.

[0011] Further, the electric energy measurement unit further includes voltage dividing circuit and current sampling circuit, and the voltage dividing circuit and current sampling circuit are connected with the measurement chip respectively.

[0012] Further, the data processing unit further includes EEPROM module, FLASH module and relay module, and the EEPROM module, FLASH module and relay module are connected with the microcontroller respectively.

[0013] Further, the power supply unit includes battery, super capacitor and external power supply, and the battery and super capacitor supply power for the data processing unit and input output unit when power off, and the external power supply supplies power for the measurement chip, data processing unit, input output unit and communication interface unit.

[0014] Further, the input output unit includes indicator light module, liquid crystal module and key module, and the indicator light module, liquid crystal module and key module are connected with the microcontroller respectively, and the indicator light module is further connected with the measurement chip.

[0015] Further, the communication interface unit further includes RS485 interface module, and the RS485 interface module is connected with the microcontroller.

[0016] Further, it further includes the shell, and the electric energy measurement unit, data processing unit, power supply unit, input output unit and communication interface unit are arranged in the shell.

[0017] Compared with the prior art, the single -phase electronic type electric energy meter based on NB -IoT and bluetooth communication provided by the utility model has at least the following beneficial effects:

[0018] In existing technologies, electricity meter communication requires reporting from a concentrator to the main data acquisition station, resulting in high equipment and construction costs. The downstream communication methods for electricity meters are RS485 and far-infrared. In full-carrier areas, RS485 is rarely used. In half-carrier areas, each meter box is equipped with a data acquisition unit, which is connected to multiple devices via RS485 lines. This wiring is complex and costly. When installing electricity meters, the customer number and communication address need to be recorded and manually filed at the marketing main station. Incorrect recording will lead to equipment reading failures and communication inconvenience. This utility model features a simple structure and convenient operation. Based on the NB-IoT network, it enables the electricity meter to have wireless transmission capabilities, eliminating the need for relay equipment such as carrier modules, collectors, and concentrators. This reduces wiring and simplifies, improves efficiency, and lowers costs for electricity data collection and cost control. Based on Bluetooth communication, maintenance personnel can perform data reading, parameter setting, data clearing, and circuit breaker control via a Bluetooth app, simplifying maintenance. When equipped with both an NB-IoT communication module and a Bluetooth module, it can be factory-configured as a communication gateway, enabling data reading, cost control, freezing, and event reporting of downstream electricity meters via RS485 or Bluetooth. This utility model communicates directly with the data collection master station via NB-IoT and interacts with the user's mobile phone via Bluetooth, making installation and maintenance convenient and possessing broad application prospects. Attached Figure Description

[0019] To more clearly illustrate the solution of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A structural block diagram of a single-phase electronic energy meter based on NB-IoT and Bluetooth communication is provided for an embodiment of this utility model;

[0021] Figure 2 A front view of the casing of a single-phase electronic energy meter based on NB-IoT and Bluetooth communication, provided for an embodiment of this utility model. Detailed Implementation

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as “length,” “width,” “upper,” “lower,” “left,” “right,” “front,” “rear,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer” indicate orientations or positions based on the orientations or positions shown in the accompanying drawings and are merely for ease of description and should not be construed as limiting the invention.

[0023] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this utility model are intended to cover non-exclusive inclusion; the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a particular order. In the specification, claims, and accompanying drawings of this utility model, when an element is referred to as "fixed to," "mounted to," "set on," or "connected to" another element, it can be directly or indirectly located on that other element. For example, when an element is referred to as "connected to" another element, it can be directly or indirectly connected to that other element.

[0024] Furthermore, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] This utility model provides a single-phase electronic energy meter based on NB-IoT and Bluetooth communication, which is used in the process of collecting energy data. The single-phase electronic energy meter based on NB-IoT and Bluetooth communication includes:

[0026] The unit includes an energy metering unit, a data processing unit, a power supply unit, an input / output unit, and a communication interface unit.

[0027] The metering chip of the power metering unit is communicatively connected to the microcontroller, power supply unit, and input / output unit of the data processing unit, respectively. The power supply unit and input / output unit are communicatively connected to the microcontroller, respectively. The communication interface unit includes an NB-IoT interface module and a Bluetooth interface module, which are communicatively connected to the microcontroller, respectively.

[0028] This utility model has a simple structure and convenient communication. It communicates directly with the data acquisition master station via NB-IoT communication uplink and interacts with the user's mobile phone via Bluetooth downlink. It requires less wiring and has a lower cost.

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0030] This invention provides a single-phase electronic energy meter based on NB-IoT and Bluetooth communication, applied in the process of energy data acquisition. The single-phase electronic energy meter based on NB-IoT and Bluetooth communication includes: an energy metering unit, a data processing unit, a power supply unit, an input / output unit, and a communication interface unit. The metering chip of the energy metering unit is communicatively connected to the microcontroller of the data processing unit, the power supply unit, and the input / output unit, respectively. The power supply unit and the input / output unit are communicatively connected to the microcontroller, respectively. The communication interface unit includes an NB-IoT interface module and a Bluetooth interface module, which are communicatively connected to the microcontroller, respectively.

[0031] Furthermore, in this embodiment, the power metering unit also includes a voltage divider circuit for protection and a current sampling circuit for sampling the current. The voltage divider circuit and the current sampling circuit are respectively connected to the metering chip for communication.

[0032] Furthermore, in this embodiment, the data processing unit also includes an EEPROM module, a FLASH module, and a relay module, which are respectively connected to the microcontroller for communication.

[0033] Furthermore, in this embodiment, the power supply unit includes a battery, a supercapacitor, and an external power source. The battery and the supercapacitor are respectively connected to the microcontroller, and the external power source is respectively connected to the metering chip and the microcontroller.

[0034] Furthermore, in this embodiment, the input / output unit includes an indicator light module, an LCD module, and a button module. The indicator light module, LCD module, and button module are respectively connected to the microcontroller, and the indicator light module is also connected to the metering chip.

[0035] Furthermore, in this embodiment, the communication interface unit also includes an RS485 interface module, which is communicatively connected to the microcontroller.

[0036] Furthermore, in this embodiment, a housing is also included. The power metering unit, data processing unit, power supply unit, input / output unit, and communication interface unit are all housed within the housing. The housing has good sealing performance and is smaller in size than existing State Grid smart meters, without a module compartment.

[0037] In this embodiment, the NB-IoT interface module is soldered to the interface of the electricity meter logic unit via a single row of bent pins. The NB-IoT interface module communicates serially with the microcontroller, and the signal level is compatible with TTL level. The Bluetooth module is soldered to the interface of the electricity meter logic unit via a single row of bent pins. The Bluetooth module communicates serially with the microcontroller, and the microcontroller uses AT commands to set the module parameters.

[0038] Furthermore, in this embodiment, the interface module can be optionally configured to function as an NB-IoT meter, a Bluetooth meter, and a communication gateway. When equipped with both an NB-IoT interface module and a Bluetooth interface module and factory-configured with routing gateway functionality, it can automatically search for meters via RS485 and Bluetooth, supporting up to 31 slave devices. It can also remotely control the slave devices via an intelligent platform, perform on-demand data reading, and report daily freezes.

[0039] Compared with existing technologies, the single-phase electronic energy meter based on NB-IoT and Bluetooth communication described in the above embodiments has advantages. In existing technologies, the meter communication needs to be reported to the collection master station via a concentrator, resulting in high equipment and construction costs. The meter's downlink communication methods are RS485 and far-infrared. In the full-carrier area, RS485 is basically not used. In the half-carrier area, each meter box is equipped with a collector, which is connected to multiple devices via RS485 lines. The wiring is complex and the cost is also high. When installing the meter, the customer number and communication address need to be recorded and manually filed at the marketing master station. Incorrect recording will cause the device to fail to read the data, making communication inconvenient. This utility model features a simple structure and convenient operation. Based on the NB-IoT network, it enables the electricity meter to have wireless transmission capabilities, eliminating the need for relay equipment such as carrier modules, collectors, and concentrators. This reduces wiring and simplifies, improves efficiency, and lowers costs for electricity data collection and cost control. Based on Bluetooth communication, maintenance personnel can perform data reading, parameter setting, data clearing, and circuit breaker control via a Bluetooth app, simplifying maintenance. When equipped with both an NB-IoT communication module and a Bluetooth module, it can be factory-configured as a communication gateway, enabling data reading, cost control, freezing, and event reporting of downstream electricity meters via RS485 or Bluetooth. This utility model communicates directly with the data collection master station via NB-IoT and interacts with the user's mobile phone via Bluetooth, making installation and maintenance convenient and possessing broad application prospects.

[0040] Obviously, the embodiments described above are merely preferred embodiments of this utility model, and not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A single-phase electronic energy meter based on NB-IoT and Bluetooth communication, characterized in that, include: The unit includes an energy metering unit, a data processing unit, a power supply unit, an input / output unit, and a communication interface unit. The metering chip of the power metering unit is communicatively connected to the microcontroller, power supply unit, and input / output unit of the data processing unit, respectively; the power supply unit and input / output unit are communicatively connected to the microcontroller, respectively. The communication interface unit includes an NB-IoT interface module and a Bluetooth interface module, which are respectively connected to the microcontroller.

2. A single-phase electronic energy meter based on NB-IoT and Bluetooth communication according to claim 1, characterized in that, The power metering unit also includes a voltage divider circuit and a current sampling circuit, which are respectively connected to the metering chip.

3. A single-phase electronic energy meter based on NB-IoT and Bluetooth communication according to claim 1, characterized in that, The data processing unit further includes an EEPROM module, a FLASH module, and a relay module, which are respectively connected to the microcontroller for communication.

4. A single-phase electronic energy meter based on NB-IoT and Bluetooth communication according to claim 1, characterized in that, The power supply unit includes a battery, a supercapacitor, and an external power source. The battery and supercapacitor supply power to the data processing unit and the input / output unit when power is off, and the external power source supplies power to the metering chip, the data processing unit, the input / output unit, and the communication interface unit.

5. A single-phase electronic energy meter based on NB-IoT and Bluetooth communication according to claim 1, characterized in that, The input / output unit includes an indicator light module, an LCD module, and a button module. The indicator light module, LCD module, and button module are respectively communicatively connected to the microcontroller. The indicator light module is also communicatively connected to the metering chip.

6. A single-phase electronic energy meter based on NB-IoT and Bluetooth communication according to claim 1, characterized in that, The communication interface unit also includes an RS485 interface module, which is communicatively connected to the microcontroller.

7. A single-phase electronic energy meter based on NB-IoT and Bluetooth communication according to claim 1, characterized in that, It also includes a housing, in which the power metering unit, data processing unit, power supply unit, input / output unit and communication interface unit are all housed.

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