CN216852006U

CN216852006U - Intelligent single-phase ammeter of thing networking based on NB-IOT communication technology

Info

Publication number: CN216852006U
Application number: CN202220214221.9U
Authority: CN
Inventors: 姬磊; 周小燕; 迟睿芳; 唐敏
Original assignee: Nanjing Changyang Technology Co ltd
Current assignee: Nanjing Changyang Technology Co ltd
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-06-28
Anticipated expiration: 2032-01-26

Abstract

The utility model discloses a thing networking intelligence single-phase ammeter based on NB-IOT communication technology belongs to the single-phase ammeter field. The problem that remote monitoring, remote meter reading and remote control cannot be achieved due to the fact that a traditional ammeter is single in function can be effectively solved. The device comprises thing networking intelligent single-phase ammeter and wisdom energy thing networking platform, thing networking intelligent single-phase ammeter includes switching power supply module, single-phase electric energy metering module, M0 nuclear microprocessor module, input and output control module, pilot lamp module, NB-IOT communication module and LCD display module. The intelligent single-phase ammeter based on the Internet of things can remotely transmit electric energy data to the server, and data centralized processing is carried out through the intelligent energy Internet of things platform, abnormal data can be screened, collection and processing of the electric energy data are facilitated, intelligent management of the ammeter is achieved, and various alarm functions can be achieved.

Description

Intelligent single-phase ammeter of thing networking based on NB-IOT communication technology

Technical Field

The utility model relates to a single-phase ammeter field, more specifically say, relate to a thing networking intelligence single-phase ammeter based on NB-IOT communication technology.

Background

With the demand of many industries for electricity and the development of industrial automation, the demand of smart meters is higher and higher. Many intelligent single-phase electric meters on the market at present have simple and single functions, output information is too little, and the requirements of people cannot be met, so that certain trouble is brought to daily use. When the intelligent single-phase electric meter breaks down, the fault point and the problem cannot be found quickly and accurately, and the repair time is delayed. In addition, the existing remote meter reading mode of the electric meter has many defects, such as limited communication, inconvenient operation and high input cost, and is not suitable for large-scale automatic meter reading.

The intelligent electric meter is an intelligent terminal of an intelligent power grid, has the functions of bidirectional multi-rate metering, user side control, bidirectional data communication in multiple data transmission modes, electricity larceny prevention and other intelligent functions in order to adapt to the use of the intelligent power grid and new energy besides the metering function of basic electricity consumption of the traditional electric meter, and represents the development direction of future intelligent terminals of end users of the energy-saving intelligent power grid.

SUMMERY OF THE UTILITY MODEL

1. Technical problem to be solved

To the problem that exists among the prior art, the utility model aims to provide a single-phase ammeter of thing networking intelligence based on NB-IOT communication technology, it can realize adopting the long-range technique of checking meter of NB-IOT, possess the coverage wide, characteristics such as communication cost is low, the real-time nature is strong, has effectively solved the restricted, the operation of ammeter communication on the market at present problem inconvenient, that the input cost is big.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

The utility model provides a single-phase ammeter of thing networking intelligence based on NB-IOT communication technology, includes single-phase ammeter of thing networking intelligence and wisdom energy thing networking platform, its characterized in that: the intelligent single-phase electric meter based on the Internet of things comprises a switch power supply module, a single-phase electric energy metering module, an M0 nuclear microprocessor module, an input and output control module, a storage module, an indicator light module, an NB-IOT communication module and an LCD display module. Wherein: the M0 nuclear microprocessor module is used for data processing, LCD driving and input and output control; the switching power supply module is used for providing a stable and reliable direct-current power supply and overvoltage protection for the whole system; the single-phase electric energy metering module is connected with the M0 nuclear microprocessor module through a UART interface, is used for sampling the effective value of voltage and current and metering the active power, and can monitor the voltage loss and overvoltage of a power line; the LCD display module is connected with the M0 nuclear microprocessor module through an LCD driving bus and is used for displaying electric energy information of the electric meter and various alarm prompt information in real time; the storage module is connected with the M0 core microprocessor module through an IIC bus and used for storing data; the NB-IOT communication module is connected with the M0 nuclear microprocessor module through a UART and is used for uploading and receiving commands of the electric meter; and the input and output control module is connected with the M0 core microprocessor module through a GPIO (general purpose input/output) and is used for controlling the on/off of each output line.

As a further technical solution of the present invention: the switching power supply module comprises surge protection, full-wave rectification, filtering processing and switching power supply processing, and provides a stable and reliable direct-current power supply for the whole system.

As a further technical solution of the present invention: the single-phase metering module comprises voltage and current effective value sampling and active power metering and can monitor voltage loss and overvoltage of a power line;

as a further technical solution of the present invention: the NB-IOT communication module comprises an NB-IOT transceiving processing module and a radio frequency front-end processing module, and the NB-IOT communication module mainly sends local data to a network communication layer through the NB-IOT.

As a further technical solution of the present invention: and the LCD display module selects a code-breaking LCD to display the electric energy information of the electric meter and various alarm prompt information in real time.

As a further technical solution of the present invention: the input and output control module comprises a magnetic latching relay output control, and the module effectively controls the on-off of each output line by pulse excitation.

As a further technical solution of the present invention: the intelligent single-phase ammeter based on the Internet of things has the functions of overvoltage protection, overcurrent protection, intelligent automatic detection during starting, automatic reclosing and real-time data uploading to a cloud platform through an NB-IOT communication module.

3. Advantageous effects

Compared with the prior art, the utility model has the advantages of:

(1) the intelligent single-phase ammeter based on the Internet of things is simple in components and low in cost, the intelligent energy Internet of things platform is flexible and stable, an NB-IOT communication technology is adopted, coverage is wide, real-time performance is strong, and the problems that a traditional ammeter cannot be remotely monitored, remotely read and remotely controlled are effectively solved.

(2) The electric energy metering module effectively obtains active electric energy, active power, power direction, current, voltage, frequency, power factors and the like.

(3) And the NB-IOT communication module is used for quickly and stably transmitting the metering data and the measurement data to the intelligent Internet of things platform and simultaneously acquiring a control command issued by the platform.

(4) Wisdom energy thing networking platform has functions such as data storage, show, analysis, report form, can issue the controlled quantity simultaneously and accomplish remote control.

Drawings

FIG. 1 is a block diagram of a power management system;

FIG. 2 is a diagram of a smart energy Internet of things platform, a smart electric meter and a client data interaction framework;

fig. 3 is a schematic diagram of a switching power supply module of the present invention;

FIG. 4 is a schematic diagram of a single-phase electric energy metering module of the present invention;

FIG. 5 is a block diagram of the M0 core microprocessor module of the present invention;

fig. 6 is a schematic diagram of the NB-IOT communication module of the present invention.

Detailed Description

The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

As illustrated in figures 1 and 2: the utility model provides a single-phase ammeter of thing networking intelligence based on NB-IOT communication technology, includes single-phase ammeter of intelligence and wisdom energy thing networking platform, the single-phase ammeter of thing networking intelligence includes switching power supply module, single-phase electric energy metering module, M0 nuclear microprocessor module, input/output control module, pilot lamp module, NB-IOT communication module and LCD display module. Wherein: the M0 nuclear microprocessor module is used for data processing and input/output control; the switching power supply module is used for providing power supply voltage; the single-phase electric energy metering module is used for sampling voltage and current and metering electric degree; the LCD display module is used for displaying the electric energy information of the electric meter and various alarm prompt information in real time; the storage module is used for storing data; the NB-IOT communication module is used for uploading and receiving commands of the electric meter; and the input and output control module is used for controlling the power on and off of each output line.

Referring to fig. 3, the switching power supply module includes single-phase power input, surge protection, half-wave rectification, filtering processing, ac/dc conversion processing, and dc voltage stabilization processing. The AC-DC power supply module can resist 4KV surge interference, 8KV electrostatic interference, radio frequency electromagnetic field interference and conducted interference induced by the radio frequency field, and provides a stable and reliable direct current power supply for the whole system.

Referring to fig. 4, the single-phase electric energy metering module includes forward and reverse active and reactive electric energy; total active and reactive power; an effective value of voltage and current; the calculation of frequency and power factor supports flexible meter calibration scheme,

referring to fig. 5, RN8318 is selected as the main controller of the smart meter for the internet of things. An ARM Cortex-M0 inner core, 512KB Flash and 32KB SRAM are integrated; 2 32-bit timers; 6 UARTs; 8 external interrupts; the clock with the built-in PLL, the watchdog timer, the low-voltage reset function and the low-voltage detection function. The method has the advantages of high processing frequency, strong expansion function and low power consumption, and is very suitable for the requirements of the design.

Referring to fig. 6, the NB-IOT communication module includes a power management module, a SIM card interface, a serial communication interface, a main antenna rf processing module, and an NB-IOT transceiver module, and the NB-IOT communication module mainly transmits local data to the network communication layer through the NB-IOT.

The storage module adopts a ferroelectric random access memory and adopts a storage mode of a main area and a backup area, so that the safety and the stability of data are improved.

The input and output control module selects a magnetic latching relay with an 80A electric shock, the magnetic latching relay is divided into multiple paths of output according to the difference of power output by a customer to the electric meter and output lines, and the on-off of each path of output line is further controlled by controlling each path of switch.

The working principle of the Internet of things intelligent electric meter is as follows: the intelligent energy Internet of things meter comprises a single-phase electric energy metering module, an M0 nuclear microprocessor module and a storage module, wherein the single-phase electric energy metering module, the M0 nuclear microprocessor module and the storage module are used for carrying out real-time electric quantity metering and storage, electric energy data are displayed in real time through an LCD code breaking liquid crystal screen of a display module, the running state of an electric meter is indicated through the on-off of an LED of an indicator lamp module, current voltage and electric energy data are uploaded to an intelligent energy Internet of things platform through an NB-IOT communication module, a remote meter reading function is completed, and when an opening and closing instruction is sent by the intelligent energy Internet of things platform, an input and output control module drives a relay to carry out opening and closing operation.

The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.

Claims

1. The utility model provides a single-phase ammeter of thing networking intelligence based on NB-IOT communication technology, includes single-phase ammeter of thing networking intelligence and wisdom energy thing networking platform, its characterized in that: the single-phase ammeter of thing networking intelligence includes switching power supply module, single-phase electric energy metering module, M0 nuclear microprocessor module, input/output control module, storage module, pilot lamp module, NB-IOT communication module and LCD display module, wherein: the M0 nuclear microprocessor module is used for data processing, LCD driving and input and output control; the switching power supply module is used for providing a stable and reliable direct-current power supply and overvoltage protection for the whole system; the single-phase electric energy metering module is connected with the M0 nuclear microprocessor module through a UART interface, is used for sampling the effective value of voltage and current and metering the active power, and can monitor the voltage loss and overvoltage of a power line; the LCD display module is connected with the M0 nuclear microprocessor module through an LCD driving bus and is used for displaying electric energy information and alarm prompt information of the electric meter in real time; the storage module is connected with the M0 core microprocessor module through an IIC bus and used for storing data; the NB-IOT communication module is connected with the M0 nuclear microprocessor module through a UART and is used for uploading and receiving commands of the electric meter; and the input and output control module is connected with the M0 core microprocessor module through a GPIO (general purpose input/output) and is used for controlling the on/off of each output line.

2. The intelligent single-phase electric meter of the internet of things based on the NB-IOT communication technology of claim 1, characterized in that: the M0 core microprocessor module selects RN 8318.

3. The intelligent single-phase electric meter of the internet of things based on the NB-IOT communication technology of claim 1, characterized in that: the LCD display module adopts a segment code type LCD.

4. The intelligent single-phase electric meter of the internet of things based on the NB-IOT communication technology of claim 1, characterized in that: the NB-IOT communication module comprises a power supply management module, an SIM card interface, a serial port communication interface, a main antenna radio frequency processing module and an NB-IOT receiving and transmitting module.

5. The intelligent single-phase electric meter of the internet of things based on the NB-IOT communication technology of claim 1, characterized in that: wisdom energy thing networking platform has the function of data storage, show, analysis, report form, can issue the controlled quantity simultaneously and accomplish remote control.