KR20180125319A - Apparatus and method for diagnosing overcurrent using smart outlet - Google Patents

Abstract

The present invention discloses a device and a method for diagnosing an overload for each load using a smart outlet. According to an embodiment of the present invention, the device for diagnosing an overload for each load using a smart outlet sets measured current of a converter as normal reference current in a normal state and individually sets maximum operation current measured for each load as maximum reference current for each load. Also, if the measured current of the corresponding load elapses a reference time or more in a state of exceeding the maximum reference current for each load by twice or more, the device diagnoses the corresponding load as an overload precursor state to transmit to a user terminal. Therefore, the present invention can prevent electrical damage due to the overload for each load.

Description

[0001] APPARATUS AND METHOD FOR DIAGNOSING OVERCURRENT USING SMART OUTLET [0002]

The present invention relates to an apparatus and method for diagnosing an overload by loads using a smart outlet, and more particularly, to an apparatus and method for diagnosing an overload by a load, The present invention relates to a technique for diagnosing an overcurrent transient of a vehicle and diagnosing an overcurrent transient of the overcurrent transient and transmitting the diagnosed overload transient to a user terminal.

In general, the use of electricity is convenient, but if it is not properly managed or misused, it has a very dangerous factor, so there is little possibility of causing serious accidents such as electric fires or electric shocks.

Conventionally, a conductor is connected between an iron core and a wire, a line is closed, a voltage induced in the coil is measured to obtain a current value of the conductor as a load current, and the obtained load current is monitored at all times, If the value is exceeded, an alarm sound is generated and the abnormal condition of the load can be intuitively confirmed.

However, since the set current varies according to the type of the load as well as the time of measurement of the load current, it is difficult to diagnose the abnormality of various loads using the fixed set current.

As in the above-mentioned prior art documents, an outlet for supplying electric power to an electronic product, in particular, a smart outlet that transmits the amount of current consumed by a plurality of electronic products used in the home through wireless communication (Bluetooth communication or Zigbee communication) There is no technology to diagnose the overload current per load with respect to the amount of current that varies depending on the type.

SUMMARY OF THE INVENTION The present invention has been conceived to solve all the problems of the prior art, and it is an object of the present invention to provide a current transformer which detects a reference load current in a steady state and sets it as a normal reference current, , And diagnoses the overload of the load using the current-time relationship between the actual current of the load and the maximum reference current, thereby providing an overload diagnosis device and method for each load using a smart outlet capable of protecting the load from an overload In the future.

According to an aspect of the present invention, there is provided an overload diagnosis device for each load using a smart outlet connected to a load and diagnosing an overcurrent of the load with an actual current of the load, the device comprising: a smart outlet A reference current setting unit for detecting a load current in a steady state from a current transformer provided at a predetermined position and setting the same as a normal reference current and setting a maximum operating current for each load as a maximum reference current; And an overload diagnosis unit for diagnosing the overload of the load based on the measured current of the load and the maintenance time exceeding the maximum reference current of the load, and transmitting the diagnosis result to the user terminal.

Preferably, the reference current setting unit includes: a digital converter for converting a steady state load current and a maximum operating current for each load supplied from the current transformer into digital form; And a storage for storing and setting the steady state load current and the maximum operating current for each load as the normal reference current and the maximum reference current for each load, respectively.

Preferably, the overload diagnosis unit includes: a digital converter for converting a measured current of an analog type for each load into a digital form; And a diagnostic module for diagnosing overload of the load on the basis of a measured current of the load and a maximum reference current of the load stored in the storage.

Preferably, when a reference time (preferably 10 seconds or more) has elapsed in a state where the actual current of the load exceeds twice the maximum reference current, the diagnosis module diagnoses the load as an overload precursor state, As shown in FIG.

According to another embodiment of the present invention, there is provided an overload diagnosis device for each load using a smart outlet connected to a load and measuring a current of the load to diagnose an overcurrent of the load, wherein the measured current of the load supplied from the current transformer And a diagnostic module for diagnosing an overload precursor state when a reference time (preferably, 10 seconds or more) has elapsed in a state where the reference current exceeds twice the reference current, and for transmitting the diagnosis result to the user terminal.

According to still another aspect of the present invention, there is provided a method of diagnosing an overload by load using a smart outlet for diagnosing an overcurrent of a load by measuring an amount of a load connected to the load, A reference current setting step of detecting a load current in a steady state from a current transformer and storing the same as a normal reference current, and setting an operation maximum current for each load as a maximum reference current; And an overload diagnosis step of diagnosing the overcurrent of the load on the basis of the measured current of the load, the maximum reference current of the load, and the holding time of the maximum reference current and transmitting the diagnosis result to the user terminal.

Preferably, the overload diagnosing step diagnoses the overload condition when the measured current of the load exceeds 2 times the maximum reference current of the load and more than the reference time (preferably 10 seconds) To the terminal.

According to the present invention, in the steady state, the measuring current of the current transformer is set as the steady reference current, the maximum operating current measured for each load is set as the maximum reference current for each load, If the load exceeds 2 times the reference current and the reference time elapses, the load is diagnosed as an overload precursor state and transmitted to the user terminal, thereby achieving the effect of preventing electrical damage due to overload of each load.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention given below, serve to further understand the technical idea of the invention. And should not be construed as limiting.
1 is a diagram showing a configuration of an autonomic electrical safety management system applied to an embodiment of the present invention.
2 is a diagram illustrating a configuration of an overload diagnosis device for each load using a smart outlet of an autonomic electrical safety management system according to an embodiment of the present invention.
3 is a waveform diagram showing a steady state load current and voltage for each load using a smart outlet according to an embodiment of the present invention.
4 is a flowchart illustrating an overload diagnosis process for each load using a smart outlet of an autonomic electrical safety management system according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Brief Description of the Drawings The advantages and features of the present invention, and how to accomplish them, will become apparent with reference to the embodiments described hereinafter with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

The terms used in this specification will be briefly described and the present invention will be described in detail.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. Also, in certain cases, there may be a term selected arbitrarily by the applicant, in which case the meaning thereof will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term, not on the name of a simple term, but on the entire contents of the present invention.

When an element is referred to as " including " an element throughout the specification, it is to be understood that the element may include other elements as well, without departing from the spirit or scope of the present invention. Also, as used herein, the term " part " refers to a hardware component such as software, FPGA or ASIC, and " part " However, " part " is not meant to be limited to software or hardware. &Quot; Part " may be configured to reside on an addressable storage medium and may be configured to play back one or more processors.

Thus, by way of example, and not limitation, " part (s) " refers to components such as software components, object oriented software components, class components and task components, and processes, Subroutines, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays and variables. The functions provided in the components and " parts " may be combined into a smaller number of components and " parts " or further separated into additional components and " parts ".

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. In order to clearly explain the present invention in the drawings, parts not related to the description will be omitted.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an apparatus and method for diagnosing an overload by load using a smart outlet of an autonomic electrical safety management system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a conceptual diagram showing an overall structure of an autonomic electrical safety management system according to the present invention. Referring to FIG. 1, an autonomic electrical safety management system (S) The system S has the configuration of the smart outlet 10 installed in the household, the smart distribution board 20, the manager server 30, the central control server 40, and the user terminal 50.

The smart outlet 10 provides the smart distribution board 20 with load status information data such as the load type and the accident status for the connected household appliances.

The smart distribution panel 20 collects state information for each load of the smart outlet 10 in the household, generates state information data of the unit customer by collecting and analyzing state information on the branch converter, To the administrator server (30) and the user terminal (50).

In addition, the smart distribution board 20 analyzes the information about the branch circuit and controls the on / off of the branch circuit breaker and the smart outlet 10 when the electric shock is diagnosed. The state information data transmitted from the smart distribution board 20 is transmitted to the user and the manager according to the type of the state information data, so that the electric power can be safely used.

The manager server 30 is operated in the contract service entity and monitors the electrical safety status data of the unit customer. In response to the monitoring result, the manager server 30 takes urgent measures such as eliminating a failure factor when an accident occurs, and provides service information to the user. Also, the manager server 30 transmits the electrical safety state data of the apartment house to the central control server 40 by using the public platform, and the central control server 40 receives the public information such as the public service and the disaster information, Use for customer management.

Central control server 40 may be operated by a municipality or a service provider such as Korea Electric Safety Corporation. Accordingly, the central control server 40 collects and manages the data of the apartment complex from the manager of the contract service entity of each apartment house to the public platform, and transmits public information such as public service and disaster information to the manager server 30 ).

The autonomic electrical safety management system S collects and analyzes the actual measurement data measured by the smart outlet 10 or the smart distribution board 20 to diagnose an overload precursor and outputs the overload precursor diagnosis result to the manager server 30, And provide services that require action on the failure factors.

In order to provide the autonomous electrical safety management service for each customer, the smart outlet 10 or the smart distribution board 20 analyzes the load state based on the actual voltage and the actual current for each collected load.

Accordingly, the overcurrent is a phenomenon that occurs when the maximum operating current (rated current) of a circuit breaker, a wire, and a product is exceeded, and a heat phenomenon generated when a current flows is larger than a heat phenomenon, A series of processes for diagnosing an overload for each load based on actual current supplied from the load 10 will be described.

2, the smart outlet 10 includes a load (load) in a steady state supplied from a current transformer 100 provided at a predetermined position, The maximum current for each current and load is collected and set to the normal reference current and the maximum reference current, and the reference time (preferably set to 10 seconds) is elapsed when the measured current of the load exceeds the preset maximum reference current of two times The load may be diagnosed to be overloaded and transmitted to the user terminal 50. The smart outlet 10 may include a reference current setting unit 200 and an overload diagnosis unit 300.

A series of processes for diagnosing an overload pre-load diagnosis shown in FIG. 2 are only those components related to the present embodiment in which overload pre-diagnosis is performed for each load using a smart outlet. Accordingly, it will be understood by those skilled in the art that other general-purpose components other than the components shown in FIG. 2 may be further included.

The reference current setting unit 200 includes a digital converter 210 that converts the load current supplied from the current transformer 100 and the maximum operating current for each load into a digital form and stores the digital current.

The digital converter 210 converts the analog load current received in the steady state into a digital form and sets it as a normal reference current, converts the analog operation current into a digital form, Set the maximum operating current for each load as the maximum reference current for each load.

The reference current setting unit 200 may further include a storage 220, and the storage 220 stores the normal reference current and the maximum reference current for each load.

In the present embodiment, the case where the reservoir 220 is mounted in one housing is described as an example. However, these configurations can be mounted in the overload diagnosis unit 300, and one or a plurality of configurations May be executed by a member or management device, and may be integrally configured as a single device

Also, in an embodiment of the present invention, the storage 220 is a variety of storage locations of a computer. It can be realized as a cloud-based personalized storage, and a series of processes for storing the generated reference current and the maximum reference current by load are as follows. It will be understood by those of ordinary skill in the art to which the invention pertains.

The overload diagnosis unit 300 may include a digital converter 310 and a diagnostic module 330. The digital converter 310 converts a current of the analog type for each load supplied from the current transformer 100 into a digital form .

The diagnostic module 330 may include a diagnostic module 320 for diagnosing an overload of the load based on a measured current of the load and a maximum reference current and a holding time of two times stored in the storage 220.

The digital converter 310 converts the actual current of the analog type currently in operation into a digital form and delivers the converted actual current to the diagnostic module 320.

The diagnostic module 320 compares the measured actual current of the load with the maximum reference current of the corresponding load stored in the storage 220, and when the measured actual current exceeds twice the maximum reference current, If it is judged that the reference time (preferably 10 seconds) has elapsed and the reference current has exceeded the maximum reference current of 2 times as a result of the judgment, the diagnosis is made to the overcurrent state of the load, (50).

3 is a waveform diagram showing the load current and voltage in the steady state of the reference current setting unit 200 shown in FIG. 2. The normal measured current and voltage for the hair dryer, the fan, the refrigerator, And the current of each load is set to the steady reference current per load.

The diagnostic module 320 compares the actual current of each load with the double maximum reference current of the corresponding load stored in the storage 220, and when the measured actual current exceeds the maximum reference current twice It is judged whether or not the predetermined holding time has elapsed. If the measured current exceeds the maximum reference current of 2 times and the maintenance interval has elapsed, diagnosis is made to the overloaded precursor state of the load.

The measured actual current received is compared with the maximum reference current of the corresponding load stored in the storage 220, and when the measured actual current exceeds the maximum reference current twice as much as the comparison result, A series of processes for diagnosing the overcurrent condition of the load will be described with reference to FIG.

4 is a flowchart illustrating an overload diagnosis process using the smart outlet 10 shown in FIG. 2. Referring to FIG. 4, the reference current setting unit 200 receives the reference current from the current transformer 100 of the smart outlet 10 The load current in the steady state is converted into a digital form and the load current in digital form is set to the normal reference current Iref and stored in the storage (steps S1 and S2).

Also, the reference current setting unit 200 detects the maximum operating current for each load, converts the maximum operating current into a digital form, stores the maximum operating current in digital form as a maximum reference current Iref_max (S3 and S4).

Then, the overload diagnosis unit 300 compares the actual current Io of the load with the maximum reference current Iref_max of the reference current setting unit 200 to diagnose the overload of the load.

That is, the overload diagnosis unit 300 receives the actual current Io of the load and converts it into a digital form, and the converted digital form actual current Io exceeds the double maximum reference current Iref_max of the load It is judged whether or not the holding time has elapsed under the condition that the actual current Io exceeds the maximum reference current Iref_max twice the load, And transmits the diagnosis result to the user terminal 50 (steps S5 to S9).

Accordingly, the measured current of the current transformer is set to the steady reference current, the maximum operating current measured for each load is set as the maximum reference current for each load in the steady state, and the measured current of the measured load is set to the maximum reference current The load is diagnosed as an overload precursor state and transmitted to the user terminal, thereby preventing electrical damage due to overload of each load .

While the present invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be appreciated by those skilled in the art that numerous changes and modifications may be made without departing from the invention. Accordingly, all such appropriate modifications and changes, and equivalents thereof, should be regarded as within the scope of the present invention.

The measured current of the current transformer is set to the steady reference current, the maximum operating current measured for each load is set as the maximum reference current for each load, and the measured current of the measured load is twice the maximum reference current The overload diagnosis device and method for each load using the smart outlet that can prevent the electric damage due to the overload of each load by diagnosing the load to be overloaded state and delivering it to the user terminal when the reference time exceeds the reference time And the performance of the smart outlet can be greatly improved. In addition, since the smart outlet is not only commercially available, but also capable of being practically and practically possible, to be.

10: Smart outlet
100: Current transformer
200: Reference current setting unit
210, 310: Digital Converter
220: Store
320: diagnostic module
50: User terminal

Claims (7)

1. An overload diagnosis device for each load using a smart outlet connected to a load and diagnosing an overcurrent of the load with a measured current of the load,
A reference current setting unit for detecting a load current in a steady state from a current transformer provided at a predetermined position of a smart outlet for supplying power to the load and setting the same as a normal reference current and setting a maximum operating current per load as a maximum reference current; And
And an overload diagnosis unit for diagnosing an overload condition of the load on the basis of an actual current of the load and a maintenance time exceeding a maximum reference current of the load and transmitting the diagnostic result to the user terminal. Overload diagnosis device
The reference current setting unit according to claim 1,
A digital converter for converting the steady state load current and the maximum operating current for each load supplied from the current transformer into digital form and storing the digital form; And
And a storage for storing the steady-state load current and the maximum operating current for each load as a normal reference current and a maximum reference current for each load,
The apparatus of claim 2, wherein the overload diagnosis unit comprises:
A digital converter for converting the measured current of the analog type into the digital form according to the load; And
And a diagnostic module for diagnosing overload of the load on the basis of a measured current of the load and a maximum reference current of the corresponding load stored in the storage.
4. The system of claim 3, wherein the diagnostic module
(Preferably 10 seconds) elapses in a state where the measured current of the load exceeds twice the maximum reference current, the load is diagnosed as an overload precursor state and the diagnosis result is transmitted to the user terminal Wherein the system comprises a smart outlet.
1. An overload diagnosis device for each load using a smart outlet connected to a load and measuring a current of the load and diagnosing an overcurrent of the load,
If the reference current (10 seconds or more) has elapsed in a state where the actual current of the load supplied from the current transformer exceeds twice the predetermined maximum reference current, diagnosis is made to the overload precursor state and the diagnosis result is transmitted to the user terminal Diagnosis module of the overload diagnosis device for each load using the smart outlet.
A method for diagnosing an overload of each load using a smart outlet for diagnosing an overcurrent of a load by measuring a current amount of the load connected to the load,
A reference current setting step of detecting a load current in a steady state from a current transformer provided at a predetermined position of a smart outlet for supplying power to the load and storing the current as a normal reference current and setting the maximum operating current per load as a maximum reference current; And
And diagnosing an overcurrent of the load based on the actual current of the load, the maximum reference current of the load, and the maximum reference current, and transmitting the diagnosis result to the user terminal. Overload diagnosis method using load.
7. The method of claim 6,
(Preferably 10 seconds) or more in a state where the actual current of the load exceeds twice the maximum reference current of the load, and diagnoses the overload condition and transmits the diagnosis result to the user terminal A Method for Overload Diagnosis by Load Using Smart Outlets.

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