Electric energy meter with load identification and fault arc detection functions

Abstract

The utility model discloses an electric energy meter with load identification and fault arc detection functions. The electric energy meter comprises a mutual inductor, a metering chip, an arc detection chip, an MCU, a load identification module and an RTC clock. The mutual inductor is sleeved on the electric wire for signal acquisition; the mutual inductor is connected to the metering chip and the arc detection chip; the metering chip is connected to the load identification module; the metering chip, the arc detection chip, the load identification module and the RTC clock are connected to the MCU. According to the electric energy meter with the load identification and fault arc detection functions provided by the utility model, when an arc occurs, the electric energy meter can record the time when the arc occurs, and meanwhile, the working load category recorded by the load identification module at the time can be reversely checked, so that which load the fault arc occurs to can be accurately judged.

Description

Technical Field

[0001] The utility model relates to an electric energy meter with load identification and fault arc detection functions. Background Art

[0002] With the rapid development of the energy meter industry, meter products are becoming increasingly diverse and multifunctional. Arc detection, as an emerging feature, is also being adopted in energy meters, identifying whether an arc has occurred within the load. Load identification modules have already gained market adoption as expansion modules for energy meters, enabling the identification of load types.

[0003] However, existing technical solutions cannot accurately determine which load the fault arc occurs in. Utility Model Content

[0004] The utility model provides an electric energy meter with load identification and fault arc detection functions to solve the above-mentioned technical problems, specifically adopting the following technical solutions:

[0005] An electric energy meter with load identification and fault arc detection functions, comprising: a mutual inductor, a metering chip, an arc detection chip, an MCU, a load identification module and an RTC clock;

[0006] The mutual inductor is sleeved on the electric wire to collect signals;

[0007] The mutual inductor is connected to the metering chip and the arc detection chip;

[0008] The metering chip is connected to the load identification module;

[0009] The metering chip, the arc detection chip, the load identification module, and the RTC clock are connected to the MCU.

[0010] Furthermore, the electric energy meter with load identification and fault arc detection functions further includes a display module, and the display module is connected to the MCU.

[0011] Furthermore, the display module is an LED display.

[0012] Furthermore, the display module is a touch display screen.

[0013] Furthermore, the electric energy meter with load identification and fault arc detection functions also includes a Bluetooth module, and the Bluetooth module is connected to the MCU.

[0014] Furthermore, the electric energy meter with load identification and fault arc detection functions further includes an RS485 module, and the RS485 module is connected to the MCU.

[0015] Furthermore, the electric energy meter with load identification and fault arc detection functions further includes a carrier module, and the carrier module is connected to the MCU.

[0016] The benefit of the present invention lies in the provided electric energy meter with load identification and fault arc detection functions. When an arc occurs, the electric energy meter can record the time when the arc occurs, and at the same time can reversely check the load category working at this time recorded by the load identification module, thereby achieving a more accurate judgment of which load the fault arc occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 The utility model is a schematic diagram of an electric energy meter with load identification and fault arc detection functions. DETAILED DESCRIPTION

[0019] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0020] like Figure 1 The figure shows an electric energy meter with load identification and fault arc detection functions of the present application, which includes: a mutual inductor, a metering chip, an arc detection chip, an MCU, a load identification module and an RTC clock.

[0021] A transformer is installed on the power lines to collect signals. It is connected to the metering chip and arc detection chip. The metering chip is connected to the load identification module. The metering chip, arc detection chip, load identification module, and RTC clock are connected to the MCU.

[0022] Specifically, the electric energy meter with load identification and fault arc detection functions contains three transformers, which are respectively installed on the three-phase power lines A, B and C for signal acquisition.

[0023] The transformer samples the power frequency current signal. After entering the metering chip and undergoing processing, the current signal can exchange data with the MCU, realizing the energy meter's measurement function. The metering chip also pushes the raw waveform to the load identification module, which analyzes the raw waveform to calculate the loads in use. The RTC clock can also be used to record the time and load usage.

[0024] The transformer can also sample high-frequency arc signals. These signals enter the arc detection chip, which calculates and determines whether an arc has occurred and communicates with the MCU. The RTC clock also records the time when the arc occurred.

[0025] In summary, when an arc fault occurs on site, the event record can be read from the MCU to determine when the arc fault occurred, and then the load identification record can be read to determine which loads the user used during this time period. By comparing the two, it is possible to roughly determine which load caused the arc fault.

[0026] In an embodiment of the present application, the electric energy meter with load identification and arc fault detection functions further includes a display module connected to the MCU. The display is used to display some general information of the electric energy meter.

[0027] In the embodiment of the present application, the display module is an LED display. It is understandable that the display module can also be a touch screen display, so as to facilitate the user to perform touch operations.

[0028] In an embodiment of the present application, the electric energy meter with load identification and fault arc detection functions further includes a Bluetooth module, an RS485 module, and a carrier module, all of which are connected to the MCU.

[0029] Through the Bluetooth module, RS485 module and carrier module, the electric energy meter with load identification and fault arc detection functions can realize functions such as event reporting communication.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the scope of protection of the present invention.

Claims

1. An electric energy meter with load identification and fault arc detection functions, characterized in that: Includes: mutual inductor, metering chip, arc detection chip, MCU, load identification module and RTC clock; The mutual inductor is sleeved on the electric wire to collect signals; The mutual inductor is connected to the metering chip and the arc detection chip; The metering chip is connected to the load identification module; The metering chip, the arc detection chip, the load identification module, and the RTC clock are connected to the MCU.

2. The electric energy meter with load identification and arc fault detection functions according to claim 1, characterized in that: The electric energy meter with load identification and fault arc detection functions further includes a display module, which is connected to the MCU.

3. The electric energy meter with load identification and arc fault detection functions according to claim 2, characterized in that: The display module is an LED display.

4. The electric energy meter with load identification and arc fault detection functions according to claim 2, characterized in that: The display module is a touch display screen.

5. The electric energy meter with load identification and arc fault detection functions according to claim 1, characterized in that: The electric energy meter with load identification and fault arc detection functions further includes a Bluetooth module, which is connected to the MCU.

6. The electric energy meter with load identification and arc fault detection functions according to claim 1, characterized in that: The electric energy meter with load identification and fault arc detection functions further includes an RS485 module, and the RS485 module is connected to the MCU.

7. The electric energy meter with load identification and arc fault detection functions according to claim 1, characterized in that: The electric energy meter with load identification and fault arc detection functions further includes a carrier module, which is connected to the MCU.

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