CN216248181U - Double-loop electric quantity transmitter with changeable electric parameters - Google Patents

Abstract

The utility model relates to a double-loop electric quantity transmitter with changeable electric parameters, which is mainly characterized in that an MCU chip, a voltage and current detection circuit, a metering chip, an RS485 communication circuit, a relay control circuit, a pulse output circuit, an analog quantity output circuit and an LED display circuit are arranged in a plastic shell in a centralized manner, so that the electric parameter measurement of a three-phase loop and a single-phase loop can be realized, the electric parameter data of 6 months can be recorded, and 5-path analog quantity output and one-path RS485 output can be realized.

Description

Double-loop electric quantity transmitter with changeable electric parameters

Technical Field

The utility model relates to the technical field of data processing equipment, in particular to a double-loop electric quantity transmitter with a changeable electric parameter.

Background

An electrical quantity transducer is a measuring instrument that converts measured parameters (alternating current, alternating voltage, active power, reactive power, frequency, phase, power factor, direct voltage, direct current, etc.) into direct current or voltage (power pulse output) in linear proportion. The system is widely applied to electric measurement, automatic control and dispatching systems of departments such as electric power, petroleum, coal, metallurgy, railway, city government and the like.

At present, most electric quantity transmitters (hereinafter referred to as transmitters) have the following defects:

1. most transmitters can only measure the electrical parameters of one three-phase loop, but cannot measure the electrical parameters of two loops;

2. most of the transmitter measurement parameters can not be modified after leaving the factory;

3. most transmitters cannot store electrical parameter data, and customers cannot directly read stored data from the interior of the transmitter for analysis;

4. most transmitters have no relay output, and clients cannot directly control related equipment through the transmitters.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects and provide a double-loop electric quantity transmitter with a modifiable electric parameter, which can simultaneously measure the electric parameters of a three-phase loop and a single-phase loop and output active electric energy pulses of the three-phase loop.

The purpose of the utility model is realized as follows:

a kind of electricity parameter changeable double-loop electric quantity transducer, it includes the outer cover and main body function module set in outer cover, the outer cover is made up of upper casing and lower casing, the main body function module includes CPU board, transmitting module and metering module; the transmitting module and the metering module are arranged on the CPU board;

the CPU board comprises an MCU chip and a first metering chip, the first metering chip is connected with a voltage and current sampling circuit of the three-phase loop and is used for measuring the voltage and the current of the three-phase loop, the MCU chip is connected with an RS485 communication circuit and a data storage circuit, and is used for recording electric parameter data and controlling the output of two paths of relays according to an electric parameter set value; the transmitting module comprises an analog quantity output circuit, the analog quantity output circuit is connected with the MCU chip, and corresponding analog quantity is output according to voltage and current data measured by the CPU board; the MCU chip is also connected with a relay output circuit, a pulse output circuit and an LED display circuit; the metering module comprises a second metering chip, the second metering chip is connected with the voltage and current sampling circuit of the single-phase loop, measures the voltage of the single-phase loop, and transmits data to the CPU board.

Further, an external plug is inserted into a terminal of the CPU board.

Furthermore, the upper shell and the lower shell are fixedly connected through a buckle and a self-tapping screw.

Further, a locking member is inserted into the bottom of the lower shell.

Furthermore, two light guide columns are inserted into the upper shell.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model provides a double-loop electric quantity transmitter with a changeable electric parameter, which can simultaneously measure the electric parameters of a three-phase loop and a single-phase loop and output the active electric energy pulse of the three-phase loop; the electrical parameter corresponding to the analog quantity output can be changed through an RS485 interface; the utility model can directly read the electric parameter data of 6 months from the transmitter for data analysis; the utility model has relay output, and the customer can control the related equipment through the relay output node according to the set value of the electric parameter.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of a main functional module according to the present invention.

Fig. 3 is a functional block diagram of the present invention.

Wherein:

light guide column 1, upper casing 2, lower casing 3, first retaining member 4, second retaining member 5, self-tapping screw 6, external plug 7, CPU board 8, transformer module 9, metering module 10.

Detailed Description

For a better understanding of the technical aspects of the present invention, reference will now be made in detail to the accompanying drawings. It should be understood that the following specific examples are not intended to limit the embodiments of the present invention, but are merely exemplary embodiments of the present invention. It should be noted that the description of the positional relationship of the components, such as the component a is located above the component B, is based on the description of the relative positions of the components in the drawings, and is not intended to limit the actual positional relationship of the components.

Example 1:

referring to fig. 1-2, fig. 1 depicts a schematic of the structure of the present invention. As shown in the figure, the double-loop electric quantity transmitter with the changeable electric quantity comprises a shell and a main functional module arranged in the shell, wherein the shell consists of an upper shell 2 and a lower shell 3, and the main functional module comprises a CPU (central processing unit) board 8, a transmitting module 9 and a metering module 10.

The CPU board 8 is welded with a transmitting module 9 and a metering module 10, and an external plug 7 is inserted into a terminal of the CPU board 8.

Go up between casing 2 and the lower casing 3 through buckle and self tapping screw 6 fixed connection, first retaining member 4 and second retaining member 5 have been inserted to the bottom of lower casing 3 for strengthen fixedly.

Two light guide columns 1 are inserted into the upper shell 2.

Referring to fig. 3, fig. 3 depicts a functional block diagram of the present invention. As shown in the figure, the CPU board comprises an MCU chip and a first metering chip, the first metering chip is connected with a three-phase loop voltage and current sampling circuit to measure the voltage and the current of the three-phase loop, the MCU chip is connected with an RS485 communication circuit and a data storage circuit to record 6 months of electric parameter data, the two relays can be controlled to output according to electric parameter set values, and the CPU board further has an RS485 communication function.

The transmitting module comprises an analog quantity output circuit, the analog quantity output circuit is connected with the MCU chip, and corresponding analog quantity is output according to voltage and current data measured by the CPU board; the MCU chip is also connected with a relay output circuit, a pulse output circuit and an LED display circuit.

The metering module comprises a second metering chip, the second metering chip is connected with the voltage and current sampling circuit of the single-phase loop, measures the voltage and the current of the single-phase loop and transmits data to the CPU board.

The working principle is as follows:

the metering module 10 is soldered to the CPU board 8 and the pick-up module 9 is soldered to the CPU board 8. The external plug 7 is inserted into the terminal of the CPU board 8, then the CPU board 8 is installed in the lower shell 3, and the CPU board 8 and the shell 3 are fixed through a buckle. The upper shell 2 is arranged in the lower shell 3, the upper shell 2 and the lower shell 3 are fixed through the buckle and the self-tapping screw 6, then the light guide column 1 is inserted into the upper shell 2, and the locking piece 4 and the locking piece 5 are inserted into the lower shell 3.

The CPU board 8: the voltage and the current of the three-phase loop are measured, the electric parameter data of 6 months are recorded, the output of the two relays can be controlled according to the set value of the electric parameter, and the RS485 communication function is also realized.

The transmission module 9: and outputting corresponding analog quantity according to the voltage and current data measured by the CPU board 8.

The metering module 10: the internal part is provided with a metering chip which measures the voltage and the current of the single-phase loop and transmits the data to the CPU board 8.

The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims (5)

1. The utility model provides a two return circuit electric quantity changer that electrical parameter can change which characterized in that: the multifunctional intelligent metering device comprises a shell and a main functional module arranged in the shell, wherein the shell consists of an upper shell (2) and a lower shell (3), and the main functional module comprises a CPU (central processing unit) board (8), a transmitting module (9) and a metering module (10); the transmitting module (9) and the metering module (10) are arranged on the CPU board (8);

the CPU board (8) comprises an MCU chip and a first metering chip, the first metering chip is connected with a voltage and current sampling circuit of the three-phase loop and is used for measuring the voltage and the current of the three-phase loop, the MCU chip is connected with an RS485 communication circuit and a data storage circuit, and is used for recording electric parameter data and controlling the output of two paths of relays according to an electric parameter set value; the transmitting module (9) comprises an analog quantity output circuit, the analog quantity output circuit is connected with the MCU chip, and corresponding analog quantity is output according to voltage and current data measured by the CPU board (8); the MCU chip is also connected with a relay output circuit, a pulse output circuit and an LED display circuit; the metering module (10) comprises a second metering chip, the second metering chip is connected with the voltage and current sampling circuit of the single-phase loop, measures the voltage of the single-phase loop, and transmits data to the CPU board (8).

2. The variable electrical parameter dual loop power transmitter of claim 1, wherein: a plurality of external plugs (7) are inserted into the terminals of the CPU board (8).

3. The variable electrical parameter dual loop power transmitter of claim 1, wherein: go up between casing (2) and the lower casing (3) through buckle and self tapping screw (6) fixed connection.

4. The variable electrical parameter dual loop power transmitter of claim 1, wherein: and a locking piece is inserted into the bottom of the lower shell (3).

5. The variable electrical parameter dual loop power transmitter of claim 1, wherein: and the upper shell (2) is provided with a light guide column (1).

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