KR20200011263A - Electric power management system for implementing effective electric power consumption and disaster prevention - Google Patents

Abstract

Disclosed is a power management system, which comprises: a lead-in switchboard that can receive power from a power distributor and a neighboring switchboard; and a control gateway communicating with the lead-in switchboard. The lead-in switchboard includes a self-power receiving part, a neighboring power receiving part, a power selection part, a power distribution part, a current measurement part, a first communication part and a first control part. The control gateway includes a second communication part, an integrated power calculation part, a charge calculation part and a second control part.

Description

ELECTRIC POWER MANAGEMENT SYSTEM FOR IMPLEMENTING EFFECTIVE ELECTRIC POWER CONSUMPTION AND DISASTER PREVENTION

The present invention relates to a power management system, and more particularly, to a power management system that can efficiently manage the power of the home by utilizing the power of the neighbor, and can prevent the disaster by monitoring the power consumption.

Electricity, an essential energy source in modern society, is obtained primarily from the burning of fossil fuels or from radiation decay. Although there are clean electricity using hydropower, tidal power, wind power, solar energy, geothermal heat, etc., such clean electricity is still low in yield and expensive in equipment cost.

On the other hand, electric power companies, such as KEPCO, install electric power meters in front of the demand location when supplying the generated power to each consumer (ie, their own home), and make electricity based on the electric power usage metered by the electric power meter. Charge a fee.

Electricity rates generally apply to progressive schemes. That is, whenever the cumulative usage exceeds a predetermined step value, the fare system is changed step by step at a high price. Therefore, the consumer will want to consume power without exceeding the predetermined threshold value as much as possible.

An object of the present invention is to provide a power management system capable of efficiently managing power of a home by receiving power from a neighbor. In addition, by monitoring the power consumption, it is possible to prevent unnecessary power consumption, prevent short circuits or short circuits, and provide a power management system that can safely block electrical accidents due to unforeseen earthquakes, fires or flooding. .

Power management system according to an embodiment of the present invention for achieving the above object is provided with an incoming switchgear that can receive power from the power distribution boards and neighboring switchboards, and a control gateway to communicate with the incoming switchgear do.

The incoming switchboard may include: a self power receiving unit receiving power for sale from the power supplier; A neighboring power receiving unit receiving distribution power from a neighboring switchboard; A power selection unit operating based on an input selection command, the power selection unit selecting one of the sales power provided by the self-power receiving unit and the distribution power provided by the neighboring power receiving unit; A power distribution unit which provides a selected power of the power for sale and the power for distribution to a predetermined power consumer; A current measuring unit generating a real-time current value by measuring in real time the amount of current generated as the selected power is consumed by the power consumer; A first communication unit supporting wired and wireless communication with the control gate side; And a first control unit which transmits the real time current value to the control gateway side and receives the selection command from the control gateway side to control the operation of the power selection unit.

The control gateway includes: a second communication unit communicating with the first communication unit; The power consumption is calculated based on the real-time current value, wherein the power usage calculated when the sales power is selected is accumulated in the self-accumulated power usage, and the power usage calculated when the distribution power is selected is the neighboring cumulative power usage. An integrated power amount calculation unit accumulating in the; A rate calculator configured to calculate a neighboring electricity rate based on the neighboring accumulated power usage; And initially supplying the power for sale to the power distribution unit, and controlling the operation of the power selection unit so that the power for distribution is provided to the power distribution unit when the self-accumulated power consumption reaches a preset reference value. And a second controller configured to generate the selection command.

On the other hand, the first communication unit of the incoming switchboard is capable of communicating with the neighboring switchboard, and the second control unit inquires whether the distribution power is available from the neighboring switchboard, and responds from the neighboring switchboard. The selection command may be generated based on.

The second controller may detect a short circuit or a short circuit based on a change in the real time current value or a change in the self cumulative power usage or the neighbor cumulative power usage. When the short circuit is detected, the self power receiving unit and the neighboring power receiving unit may be controlled to completely block the connection between the power distribution unit.

The control gateway may further include at least one of a fire detection sensor, a gas detection sensor, a vibration detection sensor, and a moisture detection sensor that are internally embedded or connected in wired or wireless communication. When fire, gas, vibration, or moisture is detected in at least one of the self power receiving unit, the neighboring power receiving unit may be controlled to completely block the connection between the power distribution unit.

The power management system may be interposed between an outlet provided by the power distribution unit and a plug provided to couple the power consumer to the power distribution unit to electrically connect the outlet to the plug, A separate current measuring module for measuring a current value flowing to the consumer goods, and transmits the measured current value to the control gateway, The second control unit, The current value provided by at least one individual current measurement module A short circuit or a short circuit may be detected based on a change trend of or based on a change trend of the cumulative power consumption calculated by the current value, and when the short circuit or a short circuit is detected, the self power receiver and the neighbor power receiver are detected. And control to completely block the connection with the power distribution unit.

The control gateway may further include a battery; And a Wi-Fi module which may be operated by power from the power distribution unit or by power from the battery, and connected to a wired / wireless network to relay the Internet signal with a communication terminal via wired or wireless. The Wi-Fi module has a function of specifying a physical location of the connected communication terminal, and when the power supply is interrupted while operating the power supply from the power distribution unit, the Wi-Fi module operates by power from the battery. The physical location of the currently connected communication terminal may be propagated through the internet network.

The second controller may notify the Wi-Fi module of a disaster occurrence situation when at least one of the short circuit, short circuit, fire, gas, vibration, or water is detected, and the Wi-Fi module is notified of the disaster occurrence situation. While operating by power from the battery, it is possible to propagate the physical location of the currently connected communication terminal through the Internet network.

The power management system according to the present invention including the above-described configuration can manage the power consumption of the own house by utilizing the power of the neighbor, and thus can lower the electricity bill of the own house.

In addition, the power management system according to the present invention can prevent unnecessary power consumption and prevent fire due to short circuit or short circuit according to the change of power usage, and safely prevent electric accidents due to unexpected earthquake, fire, flooding, etc. You can block.

1 is a block diagram showing the configuration of a power management system for realizing efficient power consumption and disaster prevention according to the present invention.
2 is a diagram conceptually illustrating an implementation example of an incoming switchboard of the power management system.
3 is a diagram conceptually illustrating an application method of an individual current measurement module.
4 is a diagram conceptually illustrating an embodiment of an individual current measurement module.
5 is a flowchart schematically illustrating a power management method by a power management system for realizing efficient power consumption and disaster prevention according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of a power management system for realizing efficient power consumption and disaster prevention according to the present invention. For reference, terms referring to each component of the present invention are named by way of example in consideration of their functions, and thus, the technical contents of the present invention should not be predicted and limited by the term itself.

Referring to FIG. 1, a power management system 300 that realizes efficient power consumption and disaster prevention according to the present invention may include an incoming switchboard 310 and a control gateway 320. The power management system 300 may be disposed in a home. The power management system 300 may receive power from the power supplier 100 and the neighboring house 200, and may be wired or wirelessly communicated with them as necessary.

The electric power company 100 is, for example, a company that supplies the produced electric power to each consumer (ie, his or her house and neighboring house), such as KEPCO. The power supplier 100 installs a power meter in front of the consumer, and charges an electric charge based on the power usage metered by the power meter.

Electricity rates generally apply to progressive schemes. That is, the cumulative amount of usage is calculated in units of a predetermined time / period, and whenever the calculated amount of cumulative usage exceeds a predetermined step-by-step reference value, the fare system is changed to a stepwise price. Therefore, the consumer will want to consume power without exceeding the predetermined threshold value as much as possible.

Alternatively, electricity rates may be applied on a contract basis. That is, if a predetermined cumulative usage limit is predetermined in a predetermined time / period unit, and within that limit, the electricity fee is paid in proportion to the power usage at a pre-contracted rate, and the power is used in excess of the contracted limit. Very high incremental schemes can be applied to collect expensive electricity bills based on power usage.

Accordingly, the power management system 300 according to the present invention is provided from the power supplier 100 when the power usage in the home is close to the reference value of the specific stage of the progressive system, or close to the limit of the contracted power amount. Rather than continuously receiving and using power for sale, instead, the power of the neighboring house 200 may be supplied and used as power for distribution.

In the power management system shown in FIG. 1, the incoming switchboard 310 includes a self power receiver 311, a neighbor power receiver 312, a power selector 313, a current measurer 314, and a first power switch. The communication unit 317 and the first control unit 319 may be provided. The control gateway 320 may include a second communication unit 321, an integrated power amount calculation unit 322, a second control unit 325, and a charge calculation unit 323. In addition, the control gateway 320 may further include a WIFI module 328 and a battery 329.

The self-powered receiving unit 311 is configured to receive the power for sale provided from the power supplier 100. For example, the self power receiving unit 311 may be directly coupled to the output side of the electricity meter provided by the power supplier 100.

The neighboring power receiving unit 312 may be coupled to an output side of the switchboard 210 of the neighboring house 200 contracted to provide power to each other. The neighboring switchboard 210 may be an incoming switchboard (in conjunction with a control gateway) disclosed in the present invention. However, the switchboard 210 of the neighboring house may be a general switchboard providing only a wiring function for connecting the input commercial power to various power consumption materials without a separate control function.

The power selector 313 operates according to a selection command provided from the control gateway, and outputs power for sale received from the self power receiver 311 through the power distributor 315 or from the neighbor power receiver 312. ) Provides a switching function that can select to output the power for distribution provided by the power distribution unit 315. In addition, the power selector 313 may provide a function of blocking all outputs of power.

The power selector 313 may include, for example, an on / off relay provided at an output side of the self power receiver 311 and an input side of the power distributor 315 (see FIG. 2). In addition, the power selector 313 may include, for example, another on / off relay provided at an output side of the neighboring power receiver 312 and an input side of the power distributor 315 (see FIG. 2). ).

The power distributor 315 is connected to the output side of the power selector 313 and is configured to provide power input through the specific power receivers 311 and 312 to the various power consumers 350 in the home. .

In this case, the current measuring unit 314 may be interposed between the output side of the power selector 313 and the input side of the power distributor 315.

The current measuring unit 314 may measure, in real time, the current value consumed by the various power consumers 350 of the home through the power distribution unit 315. The current measuring unit 314 may be, for example, a wire-wound power measuring sensor. The winding-type power measurement sensor measures a weak inductive current of about 1/10000 to 1/20000 which is proportional to the amount of current flowing through the wire. In this case, the amount of current measured may be an amount of current flowing through the wire. The real time current value measured by the current measuring unit 314 may be transmitted to the control gateway 320 in real time through the first control unit 319 and the first communication unit 317.

The first communication unit 317 may communicate with the second communication unit 321 of the control gateway 320 by wire or wirelessly. In addition, the first communication unit 317 may be configured to communicate with the switchboard 210 of the neighboring house (or the control gateway of the neighboring house).

The first control unit 319 controls the operation of each unit of the draw switchboard 310. In particular, when a selection command is input through the first communication unit 317, the operation of the power selection unit 313 may be controlled based on the selection command. In addition, the real-time current value measured by the current measuring unit 314 may be transmitted to the control gateway 320 through the first communication unit 317. In addition, the first controller 319 may transmit a query to the neighbor switchboard 310 to provide power for distribution and receive a response thereto.

2 is a view conceptually showing an embodiment of the incoming switchboard. Sales power entering the home is received and coupled to the relay corresponding to the power selector 313. The relay may be distributed to the power consumer 350 after passing through the winding-type power measuring sensor corresponding to the current measuring unit 314.

Similarly, the distribution power coming from the neighboring house 200 is received and coupled to the relay, and the distribution power entering through the relay may be distributed to the power consumer 350 after passing through the winding-type power measurement sensor.

The WIFI module and the BLE module corresponding to the first communication unit 317 support communication with the control gateway 320.

The control APU corresponding to the first control unit 319 controls the operation of each part of the incoming switchboard.

On the other hand, in the control gateway 320, the second communication unit 321 is capable of communicating with the first communication unit 317 of the incoming switchgear 310. In addition, the second communication unit 321 may be configured to communicate with the individual current measurement module 330. In addition, the second communication unit 321 may be able to communicate with the control gateway of the neighboring house 200, thereby communicating the control gateways may mutually inquire / answer whether the distribution power is available.

The integrated power amount calculator 322 calculates the cumulative power consumption based on the real-time current value provided by the current measuring unit 314. In this case, when the power selector 313 is controlled to output power for sale, the amount of power calculated is accumulated in the self-accumulated power consumption, and when the power selector 313 is controlled to output power for distribution, the amount of power calculated Can be accumulated in neighboring cumulative power usage. The calculated result is transmitted to the second control unit 325.

The rate calculation unit 323 calculates an electric charge due to using the amount of distributed power provided from the neighboring switchboard 210. That is, based on the neighboring cumulative power usage, the neighboring house 200 calculates an electric charge (neighbor electric charge) to be compensated. The calculated neighboring electric bill may be directly sent to the electricity supplier 100 through an online communication or paid directly to the neighboring house 200.

The second control unit 325 basically generates a control command for controlling the power selector 313 so that the electric power for sale is provided to each power consumer 350 through the power distribution unit 315, and thus the incoming switchboard 310. ) Can be output to the side. And it is monitored whether the self-accumulated power consumption calculated by the integrated power amount calculation unit 322 reaches a predetermined reference value.

Here, the predetermined specific reference value may be a power amount value contracted to be provided at a contract fee with the electricity sales company 100 of the own house or a value arbitrarily set close thereto. Alternatively, the reference value may be a reference value of, or a value close to, any progressive step among the plurality of progressive steps.

On the other hand, the second control unit 325 may generate a selection command to control the power selector 313 to block the power for sale and select the power for distribution if the self-accumulated power usage reaches the predetermined reference value. .

Alternatively, when the self-accumulated power usage reaches the preset reference value, the second control unit 325 first generates a signal for inquiring whether the power distribution is possible to the neighbor switchboard (or neighbor control gateway) and generates a signal for the first communication unit ( Alternatively, the second communication unit may be transmitted, and a selection command for controlling the power selector 313 may be generated according to a permission or rejection response transmitted from the neighbor switchboard 210.

The query may simply be a request to immediately distribute power. However, based on the previous usage trend of the home, it is possible to calculate how much additional power is needed at what time, and transmit information indicating when and how much power is required.

The neighbor switchboard 210 may maintain its cumulative power usage, check whether the requested amount of power can be provided at the requested time, and transmit a response according to the availability.

According to the power management system according to the present invention configured as described above, the self-owner can use the amount of power exceeding a certain progressive stage and pay a fee in a fare system below a specific progressive stage, thereby saving electric charges. . In other words, efficient power consumption is realized.

Next, the flow of an efficient power management method implemented by the power management system according to the present invention will be described with reference to FIG. 5. The control gateway 320 of the home may monitor whether the peak power reaches the reference value while monitoring the current power usage in real time.

If the peak power reaches the reference value, the expected excess amount and time can be calculated, and the neighboring house 200 can be requested to distribute power.

The switchboard 210 or control gateway of the neighboring house 200 calculates the available power at the requested time and responds whether it can provide power for distribution. If available, it will be possible to receive an electric charge (neighbor electric charge) corresponding to the power provided later.

On the other hand, the power management system 300 of the present invention, between the outlet 316 provided from the power distribution unit 315 and the plug 351 provided in the power consumer 350 to be inserted and coupled thereto It may further comprise a separate current measurement module 330 that can be disposed. 3 conceptually illustrates an application method of the individual current measurement module. The individual current measuring module 330 measures the current value provided to the plug 351 through the outlet 316 in real time, and measures the measured real time current value to the control gateway 320 side via wired or wireless communication and / or It is configured to be able to transmit to the user's communication terminal (for example, the user's smartphone) side.

The second control unit 325 of the control gateway 320 is a change in the cumulative power consumption for each power consumer based on the change in the real-time current value provided by the individual current measurement module 330 or calculated by the current value Based on the detection, a short circuit or a short circuit may be detected at the rear end of the individual current measurement module 330. In addition, it may be detected whether the power consumer 350 consumes abnormally large power.

For example, when it is detected that the change in the current value or the cumulative power usage exceeds the previous average change trend (or the change in the degree that can be determined as being normally consumed), the second control unit 325 Considering that a disaster situation such as a short circuit or a short circuit has occurred, it may generate and transmit a selection command to the power selector 313 to cut off all the power supply to the power selector 313.

In addition, in the case of a power consumption material such as a refrigerator, if frost is caught in the heat exchanger, the heat exchange efficiency may be reduced, resulting in excessive operation of the compressor, thereby increasing power consumption. This situation can be determined.

On the other hand, if the individual current measuring module 330 is provided for each of the various power consumption materials, the second control unit 325 when a disaster situation as described above, a short circuit or short circuit occurs in any power consumer 350 You will be able to specify. In addition, if each individual current measuring module 330 is provided with a switching means that can cut off the power supply, it may be possible to solve the disaster situation by controlling the switching means of the module that is considered to have occurred such as a short circuit or short circuit .

In addition, if the individual current measurement module 330 is capable of short-range or long-distance wireless communication to communicate with the user's communication terminal, the user may use the real-time and cumulative power of the power consumer 350 in which the individual current measurement module 330 is being used. Since the usage amount can be checked in real time, the power consumer 350 can be used more safely and efficiently.

4 is a diagram conceptually illustrating an implementation example of an individual current measurement module. A main power supply connection may be provided that may be connected to the outlet 316 of the home, and an electronic device connection to which the plug 351 of the power consumer may be provided may be provided. The sensor body may be the above-described winding type power measurement sensor. The WIFI chip and the BLE chip support communication with the control gateway 320 and / or the communication terminal. The CPU is to control the operation of each unit constituting the individual current measurement module 330, calculates the power consumption based on the measured current value, and transmits the calculated value through the communication chip.

The sensor body may be at least one of a fire detection sensor, a gas detection sensor, a vibration detection sensor, and a moisture detection sensor. The detection result of the sensor may be transmitted through a communication chip and used to determine whether a disaster has occurred.

As another implementation manner in which the power management system of the present invention may be used, various sensors 390 may be disposed in the incoming switchboard 310, the control gateway 320, or the individual current measurement module 330 to detect various disaster situations. And when a disaster situation is considered to occur, it may be considered to completely shut off the power supply.

That is, for example, at least one sensor 390 of a fire detection sensor, a gas detection sensor, a vibration detection sensor, and a moisture detection sensor is installed in the control gateway 320, and the second control unit 325 is configured to control each sensor. You can handle the output.

In addition, when a fire, gas, vibration, or water is detected by at least one of the sensors 390, the second controller 325 may include a self power receiver 311, a neighbor power receiver 312, and a power distributor ( 315) may generate and output a select command that would completely block all connections to it.

According to the power management system of such a configuration, it is possible to determine the occurrence of predictable or unforeseen disasters such as short circuits, short circuits, fires, earthquakes, and flooding, and thus, the power supply can be cut off quickly. Disaster prevention can be realized.

As another implementation manner in which the power management system of the present invention can be used, the control gateway 320 is configured to be connected to the Internet network, and when the disaster situation is considered to occur, the physical location of the connected communication terminals is determined. It can be considered to propagate through.

To this end, at least the control gateway 320 may further include a battery 329 and a Wi-Fi module 328.

The control gateway 320 may normally be coupled to an outlet 316 provided by the power distribution unit 315 to receive power and perform its own function. In this case, the battery 329 may be maintained in a state of being always charged and in a state of being fully charged.

In addition, the control gateway 320 may be switched to continue to operate with power by the battery 329 when the supply of power from the power distribution unit 315 is interrupted or when a disaster situation is detected in various ways.

In addition, when a disaster situation is detected, the control gateway 320 may transmit a detection signal (or a selection command that cuts off all power) to the Wi-Fi module 328. Such a configuration can be implemented as a function of reporting a disaster occurrence to a remote disaster detection center.

Meanwhile, the Wi-Fi module 328 may be connected to an internet network on one side and may be connected to one or a plurality of communication terminals on the other side. The Wi-Fi module 328 relays signals so that the communication terminal can be connected to the Internet network.

On the other hand, the Wi-Fi module 328 is configured to specify the physical location (distance and direction) from itself to the communication terminal based on the communication state with the communication terminal. For example, the Wi-Fi module 328 may include a directional antenna or two or more antennas, and may roughly calculate a physical location of the communication terminal using the strength of a signal communicating with the communication terminal.

In this configuration, the Wi-Fi module 328 receives the detection signal of the disaster situation from the second control unit 325 or the power supply from the power distribution unit 315 stops the power supply and operates by the battery 329. When this is detected, the physical location of the connected communication terminals can be propagated through the internet network while maintaining a connection with the internet network by operating by power from the battery 329.

As a result, by identifying the communication terminals in the vicinity of the control gateway 320 based on the location information propagated through the internet network in a disaster situation, it is possible to search for the distress people who may be users of the communication terminal.

Meanwhile, only the module 328 providing the Wi-Fi function is described as an example and may be any wired or wireless communication module such as a Bluetooth communication module or an NFC communication module.

The embodiments of the present invention described above are merely illustrative of the technical idea of the present invention, and the protection scope of the present invention should be interpreted by the following claims. In addition, various modifications and variations will be possible to those skilled in the art without departing from the essential characteristics of the present invention. All technical ideas within the scope equivalent to the present invention are the present invention. It should be construed as being included in the scope of rights.

Claims (7)

A power management system having an incoming distribution panel capable of receiving power from a power distribution company and a neighboring distribution panel, and a control gateway communicating with the incoming distribution panel,
The incoming switchboard is:
A self power receiving unit receiving power for sale from the power supplier;
A neighbor power receiver receiving distribution power from a neighbor switchboard;
A power selection unit operating based on an input selection command, the power selection unit selecting one of the sales power provided by the self-power receiving unit and the distribution power provided by the neighboring power receiving unit;
A power distribution unit configured to provide a power selected from the power for sale and the power for distribution to a predetermined power consumer;
A current measuring unit generating a real-time current value by measuring the amount of current generated in real time as the selected power is consumed by the power consumer;
A first communication unit supporting wired and wireless communication with the control gate side;
And a first control unit which transmits the real time current value to the control gateway side and receives the selection command from the control gateway side to control the operation of the power selection unit.

The control gateway is:
A second communication unit communicating with the first communication unit;
The power consumption is calculated based on the real-time current value, wherein the power usage calculated when the sales power is selected is accumulated in the self-accumulated power usage, and the power usage calculated when the distribution power is selected is the neighbor cumulative power usage. An integrated power amount calculator configured to accumulate in the;
A rate calculator configured to calculate a neighbor electricity rate based on the neighboring accumulated power usage; And
Initially providing the power for sale to the power distribution unit, and controlling the operation of the power selector so that the power for distribution is provided to the power distribution unit when the self-accumulated power usage reaches a predetermined reference value. And a second control unit for generating a selection command. The method of claim 1,
The first communication unit of the incoming switchboard,
Can communicate with the neighboring switchboard,
The second control unit,
Inquiring whether the distribution power is available from the neighboring switchboard, and generating the selection command based on a response from the neighboring switchboard. The method of claim 1,
The second control unit,
On the basis of the change in the real-time current value, or on the basis of the change in the self-accumulation power consumption or the change in the neighbor cumulative power consumption, it is possible to detect a short circuit or short circuit, and when the short circuit or short circuit is detected, the self power And a unit to completely block the connection between the neighboring power receiving unit and the power distribution unit. The method of claim 1,
The control gateway,
It further comprises at least one of a built-in or wired or wirelessly connected fire detection sensor, gas detection sensor, vibration detection sensor, moisture detection sensor,
The second control unit,
When fire, gas, vibration or moisture is detected in at least one of the sensors, the power management system, characterized in that the control to completely block the connection between the power receiving unit and the neighboring power receiving unit and the power distribution unit. . The method of claim 1,
The power management system,
Interposed between the outlet provided by the power distribution unit and the power consumer and the plug provided to be coupled to the power distribution unit, the electrical connection between the outlet and the plug, while measuring the current value flowing to the power consumer And a separate current measuring module capable of transmitting the measured current value to the control gateway.
The second control unit,
A short circuit or a short circuit may be detected based on a change of the current value provided by the at least one individual current measuring module or a change of the cumulative power consumption calculated by the current value. And detecting the connection between the self power receiver and the neighboring power receiver and the power distributor completely. The method according to claim 3 or 4,
The control gateway,
battery;
And a Wi-Fi module which may be operated by power from the power distribution unit or by power from the battery, and connected to a wired / wireless network to relay the Internet signal with a communication terminal via wired or wireless. ,
The Wi-Fi module has a function of specifying a physical location of the connected communication terminal, and when the power supply is interrupted while operating the power supply from the power distribution unit, is operated by power from the battery. And propagating a physical location of the connected communication terminal through the internet network. The method of claim 6,
The second control unit notifies the Wi-Fi module of a disaster occurrence situation when at least one of the short circuit, short circuit, fire, gas, vibration, or water is detected.
When the Wi-Fi module is notified of the disaster occurrence situation, the power management system, while operating by the power from the battery, characterized in that propagating the physical location of the currently connected communication terminal through the Internet network.

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