CN213025007U - Three-phase simulation electric energy meter - Google Patents

Abstract

The utility model discloses a three-phase emulation electric energy meter, connect module, bottom plate shell, printing board bottom plate, connect gauge stand and current transformer including the part, the inside of bottom plate shell is equipped with printing board bottom plate, and the top of printing board bottom plate is equipped with the part and connects and connect module, ammeter liquid crystal and CPU and connector winding displacement jack, still is equipped with current transformer on the bottom plate shell, and current transformer's below is connected with and connects the gauge stand, the utility model discloses can realize the inside design of stealing the electricity point of electric energy meter and realize showing, communication class trouble through the program mode, the trouble that the scheme designed when realizing all designs around stealing the electricity point, according to the trouble that the project requirement realized, divide the modularization to design, each module can realize picture peg and fault setting, has fine emulation teaching effect.

Description

Three-phase simulation electric energy meter

Technical Field

The utility model relates to an electric energy meter technical field specifically is a three-phase emulation electric energy meter.

Background

The intelligent electric energy meter is generally composed of a measuring unit, a data processing unit, a communication unit and the like, and has the functions of electric energy metering, data processing, real-time monitoring, automatic control, information interaction and the like.

Compare in the electric energy meter that the tradition was given, it can realize automatic meter reading, remote data transmission, accurate data measurement and storage etc. consequently can very big reduction meter reading workman's working strength.

At present, no simulation prop used for electric power teaching and capable of simulating a real simulation table exists in the market.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a three-phase emulation electric energy meter to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a three-phase emulation electric energy meter, includes that the part connects and inserts module, bottom plate shell, printing board bottom plate, connects gauge stand and current transformer, the inside of bottom plate shell is equipped with printing board bottom plate, and the top of printing board bottom plate is equipped with the part and connects and insert module, ammeter liquid crystal and CPU and connector winding displacement jack, still is equipped with current transformer on the bottom plate shell, and current transformer's below is connected with and connects the gauge stand.

As a further technical solution of the present invention: and ammeter liquid crystal openings are arranged on the ammeter liquid crystal and the CPU.

As a further technical solution of the present invention: the component plugging module comprises a transparent organic glass cover, a component printing plate and an outer lead connector hole, wherein the outer lead connector hole is formed in the component printing plate, and the transparent organic glass cover is arranged on the component printing plate.

As a further technical solution of the present invention: the ammeter liquid crystal and the CPU comprise a power supply module, a voltage sampling module, a PC communication module, an uplink communication module, an electric energy metering module, a current sampling module, a fee control relay and interface module, an ESAM module, a CPU module, a calendar clock module, a data storage module and a liquid crystal display part, wherein the CPU module is respectively connected with the power supply module, the voltage sampling module, the PC communication module, the uplink communication module, the electric energy metering module, the current sampling module, the fee control relay and interface module, the ESAM module, the calendar clock module, the data storage module and the liquid crystal display part.

As a further technical solution of the present invention: the CPU module adopts an LPC1754FBD80 chip.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses can realize the inside design of stealing the electricity point of electric energy meter and realize showing, communication type trouble through the program mode, the trouble that the scheme designed when realizing all designs around stealing the electricity point, according to the trouble that the project requirement realized, designs in the modularization, and picture peg and fault setting can be realized to each module, has fine emulation teaching effect.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a block diagram of a component patch module;

FIG. 3 is a schematic view of a bottom plate portion;

FIG. 4 is a circuit diagram of a liquid crystal display module;

FIG. 5 is a key module circuit diagram;

FIG. 6 is a wiring diagram for SPI communication;

FIG. 7 is a circuit diagram of a voltage sampling module;

FIG. 8 is a circuit diagram of a current sampling module;

FIG. 9 is a circuit diagram of a metrology chip processing module;

FIG. 10 is a circuit diagram of a 485 communication module;

fig. 11 is a circuit diagram of an infrared communication module;

FIG. 12 is a circuit diagram of a calendar clock module;

FIG. 13 is a cost control relay module circuit diagram;

FIG. 14 is a circuit diagram of a data storage module.

In the figure: 1-component plug-in module, 2-bottom plate shell, 3-printed board bottom plate, 4-meter connecting seat, 5-meter liquid crystal opening, 6-meter liquid crystal and CPU, 7-connector flat cable jack, 8-current transformer, 81-transparent organic glass cover, 82-component printing plate and 83-external lead connector hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, example 1: the utility model provides a three-phase emulation electric energy meter, includes that the part connects and inserts module 1, bottom plate shell 2, printing board bottom plate 3, connects gauge stand 4 and current transformer 8, the inside of bottom plate shell 2 is equipped with printing board bottom plate 3, and the top of printing board bottom plate 3 is equipped with the part and connects and insert module 1, ammeter liquid crystal and CPU6 and connector winding displacement jack 7, still is equipped with current transformer 8 on the bottom plate shell 2, and current transformer 8's below is connected with and connects gauge stand 4. The electric meter liquid crystal and the CPU6 are provided with electric meter liquid crystal openings 5. The component plugging module 1 comprises a transparent organic glass cover 81, a component printing plate 82 and an outer lead connector hole 83, wherein the component printing plate 82 is provided with the outer lead connector hole 83, and the transparent organic glass cover 81 is arranged on the component printing plate 82.

Embodiment 2, on the basis of embodiment 1, as shown in fig. 3 to 14, the electric meter liquid crystal and CPU6 of the present design includes a power supply module, a voltage sampling module, a PC communication module, an uplink communication module, an electric energy metering module, a current sampling module, a cost control relay and interface module, an ESAM module, a CPU module, a calendar clock module, a data storage module, and a liquid crystal display portion, and the CPU module is respectively connected to the power supply module, the voltage sampling module, the PC communication module, the uplink communication module, the electric energy metering module, the current sampling module, the cost control relay and interface module, the ESAM module, the calendar clock module, the data storage module, and the liquid crystal display portion.

Selecting a CPU type: the CPU adopts LPC1754, and the CPU mainly realizes the overall control of the system, and the realization functions comprise: 485 communication, infrared communication, liquid crystal display, fault simulation, pulse output control, metering chip data acquisition and communication and the like; SPI communication is adopted between the CPU and the metering chip ATT 7022D.

The power supply part adopts a power supply module: the model is as follows: JY-3A10W-05/12CF (F40 terminal Power Module) Power Module parameters: inputting: AC65V-460V, according to the service condition on the terminal, can normally work at electric energy meter ultimate operating voltage 45V, and emulation table consumption is about 5W, and the on-load satisfies the requirement, outputs: 5V/1200mA, 12V/350mA output power 10W maximum 15W, reason: the input range of the power supply is wide, the 12V and 5VDC power supply is provided, the power supply requirement of equipment is met by 10W power supply, the power supply isolation effect is achieved, and the simulator is prevented from being burnt out; the power supply part of the CPU is 3.3V, the power supply of the metering chip is 5V, the power supply of the liquid crystal is 3.3V, and the backlight of the liquid crystal is 5V;

liquid crystal display: the liquid crystal display module is a standard national network standard table liquid crystal LCD (JY 09B 49W), and is provided with 2 liquid crystal driving chips (HT 1621B-48 SSOP).

The voltage is realized by adopting a resistance voltage division mode and a 2mA/2mA current type voltage transformer, the 220V ammeter and the 100V ammeter are compatible through a jumper ring, and the abnormal sampling fault setting of the electric energy metering chip is realized through a jumper cap; because the fault setting of the voltage phase sequence is realized, if the relay control is adopted, more relays are needed, the scheme cannot be realized firstly, and the scheme is realized by adopting a DuPont wire manual jumper wire; the adjustable voltage sampling resistance, the voltage disconnection, the voltage line-staggering sequence and the like can be realized.

The current sampling module realizes current loop sampling, is provided with a current transformer, and has the model as follows: the Hongfeng Wei electrical apparatus VHL-Q30.1 grade has the following parameters: 1.5 (10) A/5mA, and can realize faults including current phase error sequence, current open circuit, current short circuit, current polarity reversal and the like. The electric energy metering module adopts a metering chip ATT 7022D; the failure of the power supply of the electric energy metering chip can be designed and realized through a jumper cap; pulse output indicating failure can be achieved. The calendar clock module can set faults including calendar clock signal line disconnection and calendar clock power supply undervoltage faults; the fee control relay output control and multifunctional port output module can realize no action or abnormal action fault of the fee control relay output control; if the relay does not act when the fee control command is sent, the relay does not act when the fee control command is not sent; the data storage module can realize the power supply disconnection fault. The 485 communication loop is 2, one loop is used for 485 communication for meter reading, the 485 communication signal line disconnection fault setting can be realized, and the 485 communication power supply does not supply power; one path is used as 485 for communicating with the PC, and no fault is set. The infrared communication module can be used for setting the faults of the disconnection of an infrared communication signal line and the disconnection of a power supply of the infrared receiving module.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (5)

1. The utility model provides a three-phase emulation electric energy meter, includes that the part connects and inserts module (1), bottom plate shell (2), printing board bottom plate (3), connects gauge stand (4) and current transformer (8), its characterized in that, the inside of bottom plate shell (2) is equipped with printing board bottom plate (3), and the top of printing board bottom plate (3) is equipped with the part and connects and insert module (1), ammeter liquid crystal and CPU (6) and connector winding displacement jack (7), still is equipped with current transformer (8) on bottom plate shell (2), and the below of current transformer (8) is connected with and connects gauge stand (4).

2. The three-phase simulation electric energy meter according to claim 1, wherein the meter liquid crystal and CPU (6) is provided with meter liquid crystal openings (5).

3. The three-phase simulation electric energy meter according to claim 1, wherein the component plugging module (1) comprises a transparent organic glass cover (81), a component printing plate (82) and an outer lead connector hole (83), the component printing plate (82) is provided with the outer lead connector hole (83), and the transparent organic glass cover (81) is installed on the component printing plate (82).

4. The three-phase simulation electric energy meter according to claim 1, wherein the electric meter liquid crystal and CPU (6) comprises a power supply module, a voltage sampling module, a PC communication module, an uplink communication module, an electric energy metering module, a current sampling module, a fee control relay and interface module, an ESAM module, a CPU module, a calendar clock module, a data storage module and a liquid crystal display part, wherein the CPU module is respectively connected with the power supply module, the voltage sampling module, the PC communication module, the uplink communication module, the electric energy metering module, the current sampling module, the fee control relay and interface module, the ESAM module, the calendar clock module, the data storage module and the liquid crystal display part.

5. The three-phase simulation electric energy meter according to claim 4, wherein the CPU module adopts an LPC1754FBD80 chip.

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