阅读说明：本技术 一种电能表 (Electric energy meter ) 是由 韩霞 刁瑞朋 程昱舒 赵岩 于 2021-08-11 设计创作，主要内容包括：本申请公开了一种电能表,包括电能计量装置,该电能表还包括电弧检测装置、处理装置及提示装置,其中：电弧检测装置,用于检测电能计量装置的输出相线上的信号中是否存在电弧数据,若是,将电弧数据传输到处理装置；处理装置,用于根据电弧数据控制提示装置生成对应的提示信息。本申请能够实现电能表上的电弧检测,当检测到电能表输出线路上有电弧时,生成提示信息以便用户及时采取相应的措施,提高电能表的智能性。(The application discloses electric energy meter, including electric energy metering device, this electric energy meter still includes electric arc detection device, processing apparatus and suggestion device, wherein: the electric arc detection device is used for detecting whether electric arc data exist in signals on an output phase line of the electric energy metering device or not, and if so, transmitting the electric arc data to the processing device; and the processing device is used for controlling the prompting device to generate corresponding prompting information according to the arc data. The electric arc detection on the electric energy meter can be realized, when electric arc is detected on an output line of the electric energy meter, prompt information is generated so that a user can take corresponding measures in time, and the intelligence of the electric energy meter is improved.)

1. The utility model provides an electric energy meter, includes electric energy metering device, its characterized in that, this electric energy meter still includes electric arc detection device, processing apparatus and suggestion device, wherein:

the electric arc detection device is used for detecting whether electric arc data exist in signals on an output phase line of the electric energy metering device or not, and if so, transmitting the electric arc data to the processing device;

and the processing device is used for controlling the prompting device to generate corresponding prompting information according to the arc data.

2. An electric energy meter according to claim 1, wherein the arc detection means comprises:

the signal acquisition circuit is used for acquiring signals on an output phase line of the electric energy metering device;

and the detection chip is used for judging whether an arc waveform with similarity larger than a preset value with the characteristic arc waveform exists in the waveform of the signal according to a preset neural network algorithm, if so, acquiring arc data corresponding to the arc waveform, and transmitting the arc data to the processing device.

3. The electric energy meter according to claim 2, wherein the signal acquisition circuit comprises a signal conditioning module and a sampling module connected to the output phase line of the electric energy metering device, the sampling module comprises an inductor and a sampling resistor connected in parallel with the inductor, wherein:

the sampling module is used for collecting current signals on an output phase line of the electric energy metering device and converting the current signals into initial voltage signals;

the signal conditioning module is used for performing analog-to-digital conversion processing, amplification processing and filtering processing on the initial voltage signal to obtain a target voltage signal;

correspondingly, the detection chip is specifically used for:

and judging whether an arc waveform with similarity to the characteristic arc waveform larger than a preset value exists in the waveform of the target voltage signal according to a preset neural network algorithm, if so, acquiring arc data corresponding to the arc waveform, and transmitting the arc data to the processing device.

4. An electrical energy meter according to claim 1, further comprising a storage device;

the processing device is further used for identifying the type of the arc data and storing the arc data into a storage area corresponding to the type in the storage device, wherein the type comprises an earth arc, a series arc or a parallel arc.

5. An electrical energy meter according to claim 1, further comprising communication means;

the processing device is further used for uploading the arc data to a server through the communication device.

6. The electric energy meter according to claim 5, wherein the prompting device comprises a terminal and/or an indicator lamp arranged on the electric energy meter.

7. An electric energy meter according to any one of claims 1-6, characterized in that it further comprises:

and the leakage monitoring device is used for collecting a leakage current signal when the power supply of the battery is detected, judging whether the leakage current signal meets an alarm condition or not, and controlling the prompting device to generate corresponding prompting information if the leakage current signal meets the alarm condition.

8. The electric energy meter according to claim 7, wherein the leakage monitoring device is specifically configured to:

when the power supply of the battery is detected, collecting a leakage current signal, integrating the leakage current signal in a preset time period, judging whether the integrated leakage current signal meets an alarm condition, and if so, controlling the prompting device to generate corresponding prompting information.

9. The electric energy meter according to claim 7, further comprising a power conversion circuit disposed inside the processing device for switching to the battery power supply when the output voltage of the dc power supply is less than a predetermined value.

10. The electric energy meter according to claim 9, wherein the power conversion circuit comprises a MOS transistor.

Technical Field

The application relates to the field of electric energy meters, in particular to an electric energy meter.

Background

The electric energy meter is used for measuring electric energy, is usually connected with a power supply system in the use process, is used as the tail end of a power grid, and has the accuracy and reliability closely related to the interests of thousands of households. When the electric wire is loose and bad in contact or the circuit is aged or damaged, a fault electric arc can be generated, so that potential safety hazards exist in the user electricity utilization, serious accidents such as fire disasters can be caused when the user electricity utilization is serious, and meanwhile, the accuracy and the reliability of measuring the electric energy by the electric energy meter can be influenced. At present, common arc detection schemes are applied to circuit breaker products, and similar arc detection schemes are not available on electric energy meters.

Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.

Disclosure of Invention

The utility model aims at providing an electric energy meter can realize the electric arc detection on the electric energy meter, when detecting that electric energy meter output line has the electric arc, generates the prompt message so that the user in time takes corresponding measure, improves electric energy meter's intellectuality.

In order to solve the technical problem, the present application provides an electric energy meter, including electric energy metering device, this electric energy meter still includes electric arc detection device, processing apparatus and suggestion device, wherein:

the electric arc detection device is used for detecting whether electric arc data exist in signals on an output phase line of the electric energy metering device or not, and if so, transmitting the electric arc data to the processing device;

and the processing device is used for controlling the prompting device to generate corresponding prompting information according to the arc data.

Preferably, the arc detection device includes:

the signal acquisition circuit is used for acquiring signals on an output phase line of the electric energy metering device;

and the detection chip is used for judging whether an arc waveform with similarity larger than a preset value with the characteristic arc waveform exists in the waveform of the signal according to a preset neural network algorithm, if so, acquiring arc data corresponding to the arc waveform, and transmitting the arc data to the processing device.

Preferably, the signal acquisition circuit includes a signal conditioning module and a sampling module connected to an output phase line of the electric energy metering device, the sampling module includes an inductor and a sampling resistor connected in parallel to the inductor, wherein:

the sampling module is used for collecting current signals on an output phase line of the electric energy metering device and converting the current signals into initial voltage signals;

the signal conditioning module is used for performing analog-to-digital conversion processing, amplification processing and filtering processing on the initial voltage signal to obtain a target voltage signal;

correspondingly, the detection chip is specifically used for:

and judging whether an arc waveform with similarity to the characteristic arc waveform larger than a preset value exists in the waveform of the target voltage signal according to a preset neural network algorithm, if so, acquiring arc data corresponding to the arc waveform, and transmitting the arc data to the processing device.

Preferably, the electric energy meter further comprises a storage device;

the processing device is further used for identifying the type of the arc data and storing the arc data into a storage area corresponding to the type in the storage device, wherein the type comprises an earth arc, a series arc or a parallel arc.

Preferably, the electric energy meter further comprises a communication device;

the processing device is further used for uploading the arc data to a server through the communication device.

Preferably, the prompting device comprises a terminal and/or an indicator lamp arranged on the electric energy meter.

Preferably, the electric energy meter further comprises:

and the leakage monitoring device is used for collecting a leakage current signal when the power supply of the battery is detected, judging whether the leakage current signal meets an alarm condition or not, and controlling the prompting device to generate corresponding prompting information if the leakage current signal meets the alarm condition.

Preferably, the leakage monitoring device is specifically configured to:

when the power supply of the battery is detected, collecting a leakage current signal, integrating the leakage current signal in a preset time period, judging whether the integrated leakage current signal meets an alarm condition, and if so, controlling the prompting device to generate corresponding prompting information.

Preferably, the electric energy meter further comprises a power conversion circuit arranged inside the processing device, and the power conversion circuit is used for switching to the battery power supply when the output voltage of the direct current power supply is smaller than a preset value.

Preferably, the power conversion circuit includes a MOS transistor.

The application provides an electric energy meter, including electric energy metering device, this electric energy meter still includes electric arc detection device, processing apparatus and suggestion device. Considering that when an electric arc occurs on an output line of the electric energy meter, signals on an output phase line of the electric energy metering device have obviously distinguishable high-frequency characteristic quantities, on the basis of the high-frequency characteristic quantities, the electric arc detection device is arranged inside the electric energy meter and used for detecting whether electric arc data exist in the signals on the output phase line of the electric energy metering device, and if the electric arc data processing device exists, the prompting device is controlled to generate prompting information, so that a user can notice that the electric arc occurs on an indoor electric line, corresponding measures are taken timely, the follow-up influence on the electric energy measuring function of the electric energy meter is avoided, the fire hazard possibly caused by the electric arc can be prevented in advance, and the intelligence of the electric energy meter is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application, the drawings needed for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.

Fig. 1 is a schematic structural diagram of an electric energy meter provided in the present application;

FIG. 2 is a schematic diagram of another electrical energy meter provided herein;

fig. 3 is a schematic structural diagram of another electric energy meter provided by the present application.

Detailed Description

The core of this application is to provide an electric energy meter, can realize the electric arc detection on the electric energy meter, when detecting that electric energy meter output line has the electric arc, generate tip information so that the user in time takes corresponding measure, improves the intellectuality of electric energy meter.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an electric energy meter provided in the present application, the electric energy meter includes an electric energy metering device 1, the electric energy meter further includes an arc detection device 2, a processing device 3, and a prompting device 4, wherein:

the electric arc detection device 2 is used for detecting whether electric arc data exist in signals on an output phase line of the electric energy metering device 1 or not, and if so, transmitting the electric arc data to the processing device 3;

and the processing device 3 is used for controlling the prompting device 4 to generate corresponding prompting information according to the arc data.

Specifically, an electric energy metering device 1 for measuring electric energy data is arranged in the electric energy meter, and the electric energy data can be obtained based on collected power grid voltage signals and power grid current signals. When the electric energy meter output line has the problems of electric wire looseness, poor contact, line aging or damage and the like to generate electric arcs, the electric energy metering device 1 may have inaccurate measurement on electric energy data, and even normal electricity utilization and electricity utilization safety of users may be affected. Based on this, this application has still set up electric arc detection device 2 and processing apparatus 3 in the electric energy meter, and wherein, processing apparatus 3 can select the existing MCU (Microcontroller Unit) in the electric energy meter to reach the mesh that reduces the volume, reduce cost.

Because when the electric arc takes place, the signal on the phase line of electric energy metering device also can change correspondingly, consequently, this application links to each other electric arc detection device 2 with the output phase line of electric energy metering device 1 to gather the signal on the output phase line of electric energy metering device 1, and whether have electric arc data in the discernment this signal, if there is electric arc data, then send electric arc data to processing apparatus 3. After the processing device 3 receives the arc data, the prompting device 4 is controlled to generate corresponding prompting information for prompting a user to pay attention, and the power utilization and the wiring problem inside the electric energy meter are checked and processed in time, so that the influence on the electric energy measuring function of the electric energy meter in the follow-up process is avoided, and the intelligence of the electric energy meter is improved.

As a preferred embodiment, the arc detection device 2 includes:

the signal acquisition circuit is used for acquiring signals on an output phase line of the electric energy metering device 1;

and the detection chip is used for judging whether an arc waveform with the similarity to the characteristic arc waveform larger than a preset value exists in the waveform of the signal according to a preset neural network algorithm, if so, acquiring arc data corresponding to the arc waveform, and transmitting the arc data to the processing device 3.

Specifically, the arc detection device 2 in the present application includes, but is not limited to, a signal acquisition circuit and a detection chip. The signal acquisition circuit is used for acquiring signals on an output phase line of the electric energy metering device 1, the signal acquisition circuit comprises but is not limited to a signal conditioning module and a sampling module connected with the output phase line of the electric energy metering device 1, the sampling module comprises an inductor and a sampling resistor connected with the inductor in parallel, the sampling module is used for acquiring current signals on the output phase line of the electric energy metering device 1 and converting the current signals into initial voltage signals, the signal conditioning module is used for carrying out AD sampling on the initial voltage signals according to a preset period, analog-to-digital conversion processing is achieved, amplification processing and filtering processing are carried out on the voltage signals after the analog-to-digital conversion processing, target voltage signals in a preset voltage range are obtained, and therefore the detection chip processes the target voltage signals.

In the application, the neural network algorithm is selected to detect the electric arc, so that the analysis difficulty is reduced, and the detection accuracy is improved. A neural network model for detecting arc data may be previously constructed based on arc characteristic data in the current signal, and stored in the detection chip. After the signal acquisition circuit acquires a signal on an output phase line, the signal is transmitted to a detection chip, the similarity matching of arc waveforms is carried out by utilizing a neural network model preset in the detection chip, specifically, the arc waveforms are extracted from the signal, then the similarity matching of the arc waveforms and the characteristic arc waveforms is carried out, whether the arc waveforms with the similarity larger than a preset value exist or not is judged, if yes, arc data exist in the signal on the output phase line is judged, arc data corresponding to the arc waveforms are transmitted to the processing device 3, wherein the characteristic arc waveforms comprise fault arc waveforms and normal arc waveforms, the fault arc waveforms comprise ground-ground arc waveforms, series arc waveforms and parallel arc waveforms, the preset value is set according to actual engineering requirements, and the application is not specifically limited herein.

It can be seen that, in this embodiment, in consideration of the fact that when an electric arc occurs in an output line of the electric energy meter, signals on an output phase line of the electric energy metering device 1 have obviously distinguishable high-frequency characteristic quantities, on the basis of this, the electric arc detection device 2 is arranged inside the electric energy meter and used for detecting whether electric arc data exists in the signals on the output phase line of the electric energy metering device 1, and if the electric arc data exists in the signals on the output phase line of the electric energy metering device 1, the electric arc detection device controls the prompt device 4 to generate prompt information, so that a user notices that an electric arc is generated in an indoor electric line, timely takes corresponding measures, avoids the subsequent influence on an electric energy measurement function of the electric energy meter, can prevent a fire hazard possibly caused by the electric arc in advance, and improve the intelligence of the electric energy meter.

On the basis of the above-described embodiment:

as a preferred embodiment, the electric energy meter further comprises a storage device;

and the processing device 3 is also used for identifying the type of the arc data and storing the arc data into a storage area corresponding to the type in the storage device, wherein the type comprises an earth arc, a series arc or a parallel arc.

Specifically, the electric energy meter further comprises a storage device, the storage device can be divided into a plurality of storage areas in advance, the number of the storage areas can correspond to the number of types of arc data, after the processing device 3 acquires the arc data, the types of the arc data, such as parallel arcs, series arcs, ground arcs and normal arcs, are identified, and then the arc data are stored in the storage device according to the types and the storage areas corresponding to the types, so that statistics and analysis can be performed subsequently.

As a preferred embodiment, the electric energy meter further comprises a communication device;

and the processing device 3 is also used for uploading the arc data to the server through the communication device.

As a preferred embodiment, the prompting device 4 includes a terminal and/or an indicator lamp arranged on the electric energy meter.

Specifically, the prompting device 4 may be a terminal, such as a mobile terminal including a mobile phone and a tablet, which facilitates a user to remotely monitor a state of the electric energy meter, the processing device 3 uploads the arc data to the server through the communication device, and the server stores the arc data, so that on one hand, the storage capacity is improved, on the other hand, the user can call the arc data conveniently, and the communication device may be a wireless communication device. And generating corresponding prompt information based on the arc data at the server, and sending the prompt information to the terminal so that a user can acquire the state of the electric energy meter in time. Further, the prompting device 4 may further include an indicator lamp disposed on the electric energy meter, and when the arc data exists, the processing device 3 controls the indicator lamp to generate the prompting information, so as to facilitate checking by a worker or a user on the spot.

Referring to fig. 2, fig. 2 is a schematic structural diagram of another electric energy meter provided in the present application, the electric energy meter is based on the above embodiments:

as a preferred embodiment, the electric energy meter further comprises:

and the electric leakage monitoring device 5 is used for collecting a leakage current signal when the power supply of the battery is detected, judging whether the leakage current signal meets an alarm condition or not, and controlling the prompting device 4 to generate corresponding prompting information if the leakage current signal meets the alarm condition.

It can be understood that the battery is used as a main power supply source for the internal clock of the electric energy meter and the electricity larceny prevention detection, and provides power for the clock and the MCU of the electric energy meter under the condition of no commercial power. The electric leakage phenomenon may exist in the use process of the battery, the electric leakage detection is only carried out when the electric energy meter leaves a factory at present, and the electric leakage detection of the battery is carried out without an effective means in the transportation and installation processes of the electric energy meter. If in the transportation of electric energy meter, installation, the battery lasts the electric leakage, and the life of battery can shorten on the one hand, also can lead to the unable normal use of later stage electric energy meter. Based on this, this application still is provided with electric leakage monitoring device 5 in electric energy meter inside, be used for when detecting that the electric energy meter is by the battery power supply, gather the leakage current signal of battery output, it is comparatively small to consider the leakage current signal, for convenient analysis, as a preferred embodiment, can gather the leakage current signal in the predetermined time quantum, and the leakage current signal in this time quantum is integrated, so that take a sample, judge whether the leakage current signal after the integration satisfies the alarm condition, if, control suggestion device 4 and generate the suggestion information relevant with the leakage current warning, so that the user in time knows the electric leakage condition of battery, change and maintain the battery, further improve the intelligence of electric energy meter.

Specifically, the leakage monitoring device 5 may be disposed inside the processing device 3, or may be disposed outside the processing device, so as to implement the above functions, and the specific position of the leakage monitoring device 5 in the electric energy meter is not limited in the present application. Of course, the control logic of the processing device 3 may be modified without changing the internal structure of the processing device 3, and the processing device 3 may be used as the leakage monitoring device to implement the above-described functions. Referring to fig. 3, the leakage monitor device 5 includes, but is not limited to, a first sampling module 51, a second sampling module 52, a selection control module 53, a sample-and-hold module 54, and an ADC conversion module 55, where the first sampling module 51 and the second sampling module 52 are respectively used for collecting a current signal and a voltage signal when the battery is powered.

As a preferred embodiment, the data related to the leakage of electricity may be uploaded to the service end via the communication device and/or stored in the storage device of the electric energy meter. The prompt device 4 may be a terminal and/or an indicator lamp disposed on the electric energy meter, and the generation mode, uploading mode and issuing mode of the prompt information refer to the above description, which is not repeated herein.

As a preferred embodiment, the electric energy meter further comprises a power conversion circuit 6 arranged inside the processing device 3, and is used for switching to battery power supply when the output voltage of the direct current power supply is smaller than a preset value.

As a preferred embodiment, the power conversion circuit 6 includes a MOS transistor.

Specifically, the power conversion circuit 6 is disposed inside the processing device 3, and therefore, a MOS transistor with reduced voltage and low impedance can be selected as the power switching element.

It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.