阅读说明：本技术 一种基于NB-IoT的快装式智能电表 (Fast-assembled intelligent electric meter based on NB-IoT ) 是由 钟雯倩 肖祖才 柳林溪 王俊融 陈波 于 2021-09-01 设计创作，主要内容包括：本发明公开了一种基于NB-IoT的快装式智能电表,安装时只需将电表放入电表箱内,将调节转盘转动180°,带动主动调节块转动,促使从动调节块与电表箱内的卡槽连接,即可轻易完成安装,在检修时也易于将电表进行拆卸,降低人员安装电表的难度,可大幅提高人员的工作效率,并通过采样锰铜片对电信号进行采样,得到电流、电压、相位等电参数,计算有功功率和无功功率,并将结果发送给通讯控制模块、显示模块,使电表无线远距离低成本通讯成为可能,提高了电表的通讯速度和可靠性,节省了采集器、集中器等中间设备,降低设备成本和通讯使用费用成本。(The invention discloses a fast-assembly intelligent ammeter based on NB-IoT, which can be easily installed by only placing the ammeter in an ammeter box during installation, rotating an adjusting turntable by 180 degrees to drive a driving adjusting block to rotate, so that the driven adjusting block is connected with a clamping groove in the ammeter box, the ammeter can be easily disassembled during maintenance, the difficulty of the personnel in installing the ammeter is reduced, the working efficiency of the personnel can be greatly improved, electric signals are sampled by sampling a manganese copper sheet to obtain electric parameters such as current, voltage, phase and the like, the active power and the reactive power are calculated, and the result is sent to a communication control module and a display module, so that the wireless remote low-cost communication of the ammeter becomes possible, the communication speed and the reliability of the ammeter are improved, intermediate equipment such as a collector, a concentrator and the like are saved, and the equipment cost and the communication use cost are reduced.)

1. The utility model provides a ready-package smart electric meter based on NB-IoT, includes ammeter case (1), a plurality of longitudinal baffle (2) and the horizontal separators (3) that are cross distribution of inner fixedly connected with of ammeter case (1), install ammeter shell (4) on horizontal separators (3), wiring hole (31), its characterized in that have been seted up to the upper end of horizontal separators (3): the electric meter box is characterized in that clamping grooves (11) are formed in the side wall, close to one side of the longitudinal partition plate (2), of the electric meter box (1) and the two side walls of the longitudinal partition plate (2), an intelligent electric meter (41) is installed at the inner end of the electric meter shell (4), a display panel (42) is arranged on the surface of the electric meter shell (4), a main rotating groove (43), an annular hole (44) and an auxiliary rotating groove (45) which are communicated with each other are formed in the upper end of the electric meter shell (4), an adjusting turntable (5) is rotationally connected in the main rotating groove (43), a rotating rod (6) is fixedly connected at the lower end of the adjusting turntable (5), the rotating rod (6) penetrates through the annular hole (44) and is located in the auxiliary rotating groove (45), an active adjusting block (7) is fixedly connected at the lower end of the rotating rod (6), the active adjusting block (7) is located in the auxiliary rotating groove (45), a pair of placing grooves (46) is further formed in the inner end of the electric meter shell (4), and a pair of placing grooves (46) are arranged in parallel with the auxiliary rotating groove (45) and are respectively positioned at the left side and the right side of the auxiliary rotating groove (45), driven adjusting blocks (8) are connected in the pair of placing grooves (46) in a sliding manner, and the placing grooves (46) and the clamping grooves (11) are also arranged in parallel.

2. The NB-IoT based ready-to-mount smart meter recited in claim 1 wherein: the inner of initiative regulating block (7) inlays and is equipped with initiative magnetic block (71), the inner of driven regulating block (8) inlays and is equipped with driven magnetic block.

3. The NB-IoT based ready-to-mount smart meter recited in claim 1 wherein: a plurality of evenly distributed positioning holes (32) are formed in the upper end of the transverse partition plate (3), and positioning blocks (47) are fixedly connected to the right lower end of the electric meter shell (4).

4. The NB-IoT based ready-to-mount smart meter according to claim 3, wherein: the positioning holes (32) are inwards concave hemispherical positioning holes, and the positioning blocks (47) are outwards convex hemispherical positioning blocks.

5. The NB-IoT based ready-to-mount smart meter recited in claim 1 wherein: spacing groove (48) have still been seted up to the upper end of ammeter shell (4), horizontal spout (52) have all been seted up at both ends about adjusting turntable (5), and equal sliding connection has slider (10) in a pair of horizontal spout (52), and is a pair of slider (10) and the equal fixedly connected with compression spring (9) of inner bottom end of horizontal spout (52).

6. The NB-IoT based ready-to-mount smart meter of claim 5, wherein: the limiting groove (48) is an arc-shaped limiting groove, and the shape of the sliding block (10) is matched with the limiting groove.

7. The NB-IoT based ready-to-mount smart meter recited in claim 1 wherein: the upper end of the adjusting turntable (5) is fixedly connected with a screwing knob (51), and the outer end of the screwing knob (51) is sleeved with a rubber layer with anti-skid grains.

8. The NB-IoT based ready-to-mount smart meter recited in claim 1 wherein: a plurality of spherical grooves are formed in the lower end of the active adjusting block (7), and balls (72) are rotatably connected in the spherical grooves.

9. The NB-IoT based ready-to-mount smart meter recited in claim 1 wherein: the intelligent electric energy meter comprises an electric energy meter intelligent electric meter (41), and is characterized in that a power supply module is arranged in the electric energy meter intelligent electric meter (41), the power supply module is electrically connected with a metering control module, the metering control module is electrically connected with a sampling manganese copper sheet, a relay and a display module, the power supply module is also electrically connected with an RS485 interface, a magnetic isolation module is electrically connected between the RS485 interface and the metering control module, the power supply module is also electrically connected with an NB-IoT communication module, the NB-IoT communication module is electrically connected with an eSIM card module and a communication control module, and the NB-IoT communication module is electrically connected with the RS485 interface.

Technical Field

The invention relates to the technical field of intelligent electric meters, in particular to a fast-assembly intelligent electric meter based on NB-IoT.

Background

The intelligent electric meter is one of basic devices for data acquisition of an intelligent power grid (particularly an intelligent power distribution network), bears the tasks of original electric energy data acquisition, metering and transmission, and is the basis for realizing information integration, analysis optimization and information display. The intelligent electric meter has the functions of metering basic electricity consumption of the traditional electric meter, and also has intelligent functions of bidirectional multi-rate metering, user side control, bidirectional data communication of various data transmission modes, electricity larceny prevention and the like in order to adapt to the use of an intelligent power grid and new energy.

The communication mode of the intelligent ammeter is mainly divided into a carrier communication system and a GPRS (general packet radio service) communication system, the carrier communication mode adopts the mode that the ammeter transmits data from a power line to a concentrator of a local area through a carrier module and then transmits the data back to a main station through the GPRS module of the concentrator, and the carrier communication mode has the problems that the power line has inherent pulse interference, two peak values occur in each alternating current period, high reduction is caused to carrier signals, and the signal transmission quality is seriously influenced; the GPRS communication mode adopts a GPRS module, and ammeter data are directly transmitted to the master station through GPRS signals, but the communication mode has the problems of high price, high power consumption, poor signals and the like.

When installing, current smart electric meter need pass through the screw installation with smart electric meter and ammeter case with the help of the screwdriver, and this kind of mounting means is more firm, but during the ammeter trouble, the maintenance master will be with the help of the screwdriver again to all lift off the screw of ammeter four corners department and just can overhaul it, all can waste a large amount of time during installation and maintenance, is unfavorable for improving work efficiency.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide a fast-assembly intelligent electric meter based on NB-IoT and an electric meter box thereof, which can realize that when the intelligent electric meter and the electric meter box are installed, tools such as a screwdriver and a screw are not needed, the electric meter is only needed to be placed into the electric meter box, an adjusting turntable is rotated by 180 degrees to drive a driving adjusting block to rotate, so that the driven adjusting block is connected with a clamping groove in the electric meter box, the installation can be easily finished, the electric meter is easy to disassemble during maintenance, the difficulty of installing the electric meter by personnel is reduced, and the working efficiency of the personnel can be greatly improved.

In order to solve the above problems, the present invention adopts the following technical solutions.

A fast-assembly intelligent ammeter based on NB-IoT and an ammeter box thereof comprise an ammeter box, wherein the inner end of the ammeter box is fixedly connected with a plurality of longitudinal partition plates and transverse partition plates which are distributed in a crossed manner, an ammeter shell is installed on each transverse partition plate, a wiring hole is formed in the upper end of each transverse partition plate, clamping grooves are formed in the side wall of the ammeter box close to one side of each longitudinal partition plate and the two side walls of each longitudinal partition plate, an intelligent ammeter is installed at the inner end of the ammeter shell, a display panel is arranged on the surface of the ammeter shell, a main rotating groove, an annular hole and an auxiliary rotating groove which are communicated with each other are formed in the right upper end of the ammeter shell, an adjusting turntable is connected to the main rotating groove, a rotating rod is fixedly connected to the lower end of the adjusting turntable, the rotating rod penetrates through the annular hole and is located in the auxiliary rotating groove, and an active adjusting block is fixedly connected to the lower end of the rotating rod, the initiative regulating block is located vice pivoted slot, a pair of standing groove has still been seted up to the inner of ammeter shell, and a pair of standing groove all with vice pivoted slot parallel arrangement and be located the left and right sides of vice pivoted slot respectively, it is a pair of equal sliding connection has driven regulating block in the standing groove, standing groove and draw-in groove also are parallel arrangement, when can realizing smart electric meter and ammeter case installation, need not with the help of instruments such as screwdriver and screw, only need put into the ammeter incasement with the help of the ammeter, will adjust the carousel and rotate 180, drive the initiative regulating block and rotate, make driven regulating block be connected with the draw-in groove in the ammeter case, can accomplish the installation easily, also easily dismantle the ammeter when overhauing, reduce the degree of difficulty that personnel installed the ammeter, can improve personnel's work efficiency by a wide margin.

Further, the inner of initiative regulating block inlays and is equipped with initiative magnetism piece, the inner of driven regulating block inlays and is equipped with driven magnetism piece, when the ammeter shell is not installed with the ammeter case, the one end magnetic pole that initiative magnetism piece and driven magnetism piece are close to each other is opposite, prevents from the inside roll-off of driven regulating block from the standing groove, makes personnel conveniently carry, when the ammeter shell is installed with the ammeter case, the one end magnetic pole that initiative magnetism piece and driven magnetism piece are close to each other is the same, through driven regulating block and draw-in groove fixed ammeter shell after the joint.

Further, a plurality of evenly distributed's locating hole has been seted up to transverse partition's upper end, ammeter shell under, fixedly connected with locating piece, the locating hole is the hemisphere locating hole of indent, the locating piece is the hemisphere locating piece of evagination, when ammeter shell is put on transverse partition and is installed with the ammeter case, promotes ammeter shell to transverse partition is interior, when the locating piece is absorbed in the locating hole, can ensure that standing groove and draw-in groove are located same water flat line, also can increase ammeter shell's stability on transverse partition simultaneously.

Further, the spacing groove has still been seted up to the upper end of ammeter shell, horizontal spout has all been seted up at both ends about adjusting the carousel, and equal sliding connection has a slider in a pair of horizontal spout, and is a pair of slider and the equal fixedly connected with compression spring of inner bottom end of horizontal spout, the spacing groove is circular-arc spacing groove, the shape of slider and its phase-match, through setting up spacing groove and slider, adjust the relative position between initiative regulating block and the driven regulating block rotating the adjusting dial, when installing or dismantling the ammeter shell, make things convenient for personnel to judge this time and rotate and just be 180, ensure that initiative magnetic block changes before adjusting the position that the carousel rotated 180 back magnetic pole and rotating.

Further, the knob is twisted to the upper end fixedly connected with of regulation carousel, and twists the outer pot head that moves the knob and be equipped with the rubber layer of taking anti-skidding line, and the frictional force between knob and the personnel finger is twisted in the increase, a plurality of spherical grooves have been seted up to the lower extreme of initiative regulating block, all rotate in a plurality of spherical grooves and be connected with the ball, reduce the frictional force between the bottom end in initiative regulating block and the vice rotation groove, can reduce the interference of magnetic attraction to personnel when rotating the regulation carousel by a wide margin through twisting knob and ball, make power more convenient.

Further, a power module is arranged in the intelligent electric meter, the power module is electrically connected with a metering control module, the metering control module is electrically connected with a sampling manganese copper sheet, a relay and a display module, the display module is electrically connected with a display panel outside the shell of the electric meter, the other end of the sampling manganese copper sheet is connected with an external live wire, the power module is also electrically connected with an RS485 interface, a magnetic isolation module is electrically connected between the RS485 interface and the metering control module, the power module is also electrically connected with an NB-IoT communication module, the NB-IoT communication module is electrically connected with an eSIM card module and a communication control module, the NB-IoT communication module is electrically connected with the RS485 interface, the metering control module samples an electric signal through the sampling manganese copper sheet to obtain electric parameters such as current, voltage, phase and the like, and calculates active power and reactive power, and the calculation result is sent to the communication control module and the display module.

Compared with the prior art, the invention has the beneficial effects that:

(1) when this scheme can realize smart electric meter and ammeter case installation, need not with the help of instruments such as screwdriver and screw, only need put into the ammeter incasement with the ammeter, will adjust the carousel and rotate 180, drive the initiative regulating block and rotate, make driven regulating block and ammeter incasement draw-in groove be connected, can accomplish the installation easily, also easily dismantle the ammeter when overhauing, reduce personnel's the degree of difficulty of installing the ammeter, can improve personnel's work efficiency by a wide margin.

(2) The inner of initiative regulating block inlays and is equipped with initiative magnetism piece, the inner of driven regulating block inlays and is equipped with driven magnetism piece, when the ammeter shell is not installed with the ammeter case, the one end magnetic pole that initiative magnetism piece and driven magnetism piece are close to each other is opposite, prevent that the inside roll-off of standing groove is followed to driven regulating block, make personnel conveniently carry, when the ammeter shell is installed with the ammeter case, the one end magnetic pole that initiative magnetism piece and driven magnetism piece are close to each other is the same, through driven regulating block and draw-in groove fixed ammeter shell after the joint.

(3) A plurality of evenly distributed's locating hole has been seted up to transverse partition's upper end, ammeter shell under, the fixedly connected with locating piece, the locating hole is the hemisphere locating hole of indent, the locating piece is the hemisphere locating piece of evagination, when ammeter shell is put on transverse partition and is installed with the ammeter case, promote ammeter shell to transverse partition is interior, when the locating piece is absorbed in the locating hole, can ensure that standing groove and draw-in groove are located same water flat line, also can increase the stability of ammeter shell on transverse partition simultaneously.

(4) The spacing groove has still been seted up to the upper end of ammeter shell, horizontal spout has all been seted up at both ends about adjusting the carousel, equal sliding connection has the slider in a pair of horizontal spout, the equal fixedly connected with compression spring of the inner bottom end of a pair of slider and horizontal spout, the spacing groove is circular-arc spacing groove, the shape of slider and phase-match with it, through setting up spacing groove and slider, adjust the relative position between initiative regulating block and the driven regulating block in rotating the regulation carousel, when installing or dismantling ammeter shell, make things convenient for personnel to judge this time and rotate just for 180, ensure that initiative magnetic block changes before adjusting the position of carousel rotation 180 back magnetic pole and rotating.

(5) The knob is twisted to the upper end fixedly connected with of regulation carousel, and the outer pot head that twists the knob is equipped with the rubber layer of taking anti-skidding line, the increase is twisted and is moved the frictional force between knob and the personnel finger, a plurality of spherical grooves have been seted up to the lower extreme of initiative regulating block, all rotate in a plurality of spherical grooves and be connected with the ball, reduce the frictional force between the bottom end in initiative regulating block and the vice rotation groove, it can reduce the interference of magnetic attraction to personnel when rotating the regulation carousel by a wide margin to move knob and ball through twisting, make things convenient for the power more.

(6) The intelligent electric meter is internally provided with a power supply module, the power supply module is electrically connected with a metering control module, the metering control module is electrically connected with a sampling manganese copper sheet, a relay and a display module, the display module is electrically connected with a display panel outside the shell of the electric meter, the other end of the sampling manganese copper sheet is connected with an external live wire, the power supply module is also electrically connected with an RS485 interface, a magnetic isolation module is electrically connected between the RS485 interface and the metering control module, the power supply module is also electrically connected with an NB-IoT communication module, the NB-IoT communication module is electrically connected with an eSIM card module and a communication control module, the NB-IoT communication module is electrically connected with the RS485 interface, the metering control module samples electric signals through the sampling manganese copper sheet to obtain electric parameters such as current, voltage and phase, active power and reactive power are calculated, and a calculation result is sent to the communication control module, And a display module.

Drawings

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings, in which:

FIG. 1 is a front cross-sectional view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is another state diagram of FIG. 2;

FIG. 4 is an enlarged view of FIG. 2 at A;

FIG. 5 is an enlarged view of FIG. 3 at B;

FIG. 6 is a top view of an electricity meter housing;

FIG. 7 is a perspective view of the adjustment dial;

FIG. 8 is a flow chart of the present invention.

The reference numbers in the figures illustrate:

1 ammeter case, 11 draw-in grooves, 2 vertical baffle, 3 horizontal baffle, 31 wiring hole, 32 locating holes, 4 ammeter shells, 41 smart electric meters, 42 display panel, 43 main rotating grooves, 44 annular holes, 45 vice rotating grooves, 46 standing grooves, 47 locating pieces, 48 spacing grooves, 5 regulation turntables, 51 twist knob, 52 horizontal spout, 6 dwang, 7 initiative regulating block, 71 initiative magnetic block, 72 ball, 8 driven regulating block, 9 compression spring, 10 slider.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that 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.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-7, the fast-assembly smart meter based on NB-IoT and the meter box thereof of the present embodiment include a meter box 1, the inner end of the meter box 1 is fixedly connected with a plurality of longitudinal partition plates 2 and transverse partition plates 3 which are distributed in a cross manner, a meter housing 4 is installed on the transverse partition plates 3, the upper end of the transverse partition plates 3 is provided with a wiring hole 31, the wiring hole 31 is used for reserving a wiring space for the smart meter 41, the side wall of the meter box 1 near one side of the longitudinal partition plates 2 and the two side walls of the longitudinal partition plates 2 are both provided with a clamping groove 11, the smart meter 41 is installed at the inner end of the meter housing 4, the surface of the meter housing 4 is provided with a display panel 42, the right upper end of the meter housing 4 is provided with a main rotating groove 43, an annular hole 44 and an auxiliary rotating groove 45 which are communicated, the main rotating groove 43 is rotatably connected with an adjusting turntable 5, the lower end of the adjusting turntable 5 is fixedly connected with a rotating rod 6, the rotating rod 6 penetrates through the annular hole 44 and is positioned in the auxiliary rotating groove 45, the lower end of the rotating rod 6 is fixedly connected with the driving adjusting block 7, the driving adjusting block 7 is positioned in the auxiliary rotating groove 45, the auxiliary rotating groove 45 is an annular rotating groove, the driving adjusting block 7 is a circular adjusting block, the inner end of the electric meter shell 4 is also provided with a pair of placing grooves 46, the pair of placing grooves 46 are both arranged in parallel with the auxiliary rotating groove 45 and are respectively positioned at the left side and the right side of the auxiliary rotating groove 45, the driven adjusting blocks 8 are respectively connected in the pair of placing grooves 46 in a sliding way, the placing grooves 46 and the clamping grooves 11 are also arranged in parallel, when the intelligent electric meter and the electric meter box are installed, the electric meter can be installed easily without using tools such as a screwdriver and a screw, only the electric meter needs to be placed in the electric meter box, the adjusting turntable is rotated by 180 degrees, the driving adjusting block is rotated, the driven adjusting block is enabled to be connected with the clamping grooves in the electric meter box, also easily dismantle the ammeter when overhauing, reduce personnel's the degree of difficulty of installing the ammeter, can improve personnel's work efficiency by a wide margin.

As shown in fig. 4-5, the inner of the active adjusting block 7 is embedded with an active magnetic block 71, the inner of the driven adjusting block 8 is embedded with a driven magnetic block, when the electric meter shell 4 is not installed with the electric meter box 1, the magnetic poles of the end where the active magnetic block 71 and the driven magnetic block are close to each other are opposite, the driven adjusting block 8 is prevented from sliding out from the inner part of the placing groove 46, so that the electric meter shell is convenient to carry, when the electric meter shell 4 is installed with the electric meter box 1, the magnetic poles of the end where the active magnetic block 71 and the driven magnetic block are close to each other are the same, and the electric meter shell 4 is fixed through the driven adjusting block 8 and the clamping groove 11 after clamping.

As shown in fig. 2-3, a plurality of evenly distributed positioning holes 32 are formed in the upper end of the transverse partition plate 3, positioning blocks 47 are fixedly connected to the lower end of the electric meter shell 4, the positioning holes 32 are concave hemispherical positioning holes, the positioning blocks 47 are convex hemispherical positioning blocks, when the electric meter shell 4 is placed on the transverse partition plate 3 and mounted with the electric meter box 1, the electric meter shell 4 is pushed into the transverse partition plate 3, when the positioning blocks 47 are sunk into the positioning holes 32, the placing groove 46 and the clamping groove 11 can be ensured to be located on the same horizontal line, and meanwhile, the stability of the electric meter shell 4 on the transverse partition plate 3 can be improved.

As shown in fig. 2-6, spacing groove 48 has still been seted up to the upper end of ammeter shell 4, horizontal spout 52 has all been seted up at both ends about adjusting carousel 5, equal sliding connection has slider 10 in a pair of horizontal spout 52, the equal fixedly connected with compression spring 9 in the interior bottom of a pair of slider 10 and horizontal spout 52, spacing groove 48 is circular-arc spacing groove, slider 10's shape matches with it, through setting up spacing groove 48 and slider 10, adjust the relative position between initiative regulating block 7 and the driven regulating block 8 rotating adjusting carousel 5, when installing or dismantling ammeter shell 4, make things convenient for personnel to judge this time and rotate and just be 180, ensure that initiative magnetic block 71 changes before adjusting carousel 5 rotates 180 the position of back magnetic pole and rotating.

Referring to fig. 4-7, the upper end of the adjusting turntable 5 is fixedly connected with a screwing knob 51, and an outer end of the screwing knob 51 is sleeved with a rubber layer with anti-slip patterns, so that the friction between the screwing knob 51 and fingers of a person is increased, the lower end of the active adjusting block 7 is provided with a plurality of spherical grooves, the plurality of spherical grooves are all rotatably connected with balls 72, the friction between the active adjusting block 7 and the inner bottom end of the auxiliary rotating groove 45 is reduced, the interference of magnetic attraction to the person when the adjusting turntable 5 is rotated can be greatly reduced by screwing the knob 51 and the balls 72, and the force is more convenient to use.

As shown in fig. 8, a power module is disposed in the smart meter 41, the power module is electrically connected to a metering control module, the metering control module is electrically connected to a sampling manganese copper sheet, a relay and a display module, the display module is electrically connected to a display panel 42 outside the meter housing 4, the other end of the sampling manganese copper sheet is connected to an external fire wire, the power module is also electrically connected to an RS485 interface, a magnetic isolation module is electrically connected between the RS485 interface and the metering control module, the power module is also electrically connected to an NB-IoT communication module, the NB-IoT communication module is electrically connected to an eSIM card module and a communication control module, the NB-IoT communication module is electrically connected to the RS485 interface, the power module provides 3.3V for the metering control module and the communication control module, provides 4V for the NB-IoT communication module, and provides 12V for the RS485 interface, the metering control module samples the electric signal by sampling the manganese copper sheet to obtain electric parameters such as current, voltage, phase and the like, calculates active power and reactive power, sends the calculation result to the communication control module and the display module, and the communication control module receives the data sent by the metering control module and sends the data to the NB-IoT communication module; or receiving data sent by the NB-IoT communication module and sending the data to the metering control module, and if necessary, carrying out wired communication with the electric meter based on NB-IoT communication through the RS485 interface. Has better flexibility.

When the intelligent ammeter is installed with the ammeter box, the intelligent ammeter can be installed with the ammeter box without using tools such as a screwdriver, a screw and the like, the ammeter is placed in the ammeter box, the adjusting turntable is rotated by 180 degrees to drive the driving adjusting block to rotate, so that the driven adjusting block is connected with the clamping groove in the ammeter box, the installation can be easily finished, the ammeter is easy to disassemble during maintenance, the difficulty of installing the ammeter by personnel is reduced, the working efficiency of personnel can be greatly improved, the electric signals are sampled by sampling the manganese copper sheet to obtain electric parameters such as current, voltage, phase and the like, the active power and the reactive power are calculated, and the calculation result is sent to the communication control module and the display module, so that the wireless remote low-cost communication of the electric meter becomes possible, the communication speed and the reliability of the electric meter are greatly improved, intermediate equipment such as a collector, a concentrator and the like are saved, and the equipment cost and the communication use cost are reduced.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.