KR101637007B1

KR101637007B1 - System for viewer emergency situation monitoring

Info

Publication number: KR101637007B1
Application number: KR1020160028032A
Authority: KR
Inventors: 김영복; 이영남; 이자형; 권덕근; 김용훈; 이유빈
Original assignee: (주)에프알텍
Priority date: 2016-03-09
Filing date: 2016-03-09
Publication date: 2016-07-08

Abstract

The present invention relates to a system for monitoring an emergency situation. An objective of the present invention is to provide a system for monitoring an emergency situation which can monitor a socially disadvantaged class at low costs, and quickly and accurately respond to an emergency situation such as a fire or the like. According to the present invention, the system for monitoring an emergency situation comprises: a lighting unit to emit LED light to a space; a motion sensor to detect whether an object moves in the space; a temperature sensor to detect a temperature in the space; a camera to photograph the space; a control unit to receive a motion signal or a temperature signal from the motion sensor or the temperature sensor to determine an emergency situation, and photograph the space using the camera if an emergency situation is determined; a lighting device having a communication unit to transmit an image photographed by the camera according to control of the control unit; a terminal communication unit to communicate with the lighting device; a terminal input unit to select at least one among a management subject detection mode, an intruder detection mode, and a fire detection mode for controlling the lighting device; a terminal control unit to transmit a selected mode to the lighting device via the terminal communication unit if the mode is selected by the terminal input unit to control the lighting device to operate in the selected mode, and receive an image from the lighting device in the selected mode; and a terminal output unit to receive and output the received image according to control of the terminal control unit.

Description

[0001] The present invention relates to an emergency situation monitoring system,

The present invention relates to an emergency monitoring system, and more particularly, to an emergency monitoring system capable of detecting, monitoring and promptly responding to an emergency such as a single elderly person living alone or a socially vulnerable person living alone, &Lt; / RTI >

With the transition to a nuclear family and an aging society, people living alone, especially the elderly living alone (without the family) are increasing. Although the definition of the elderly living alone is changed by the government's welfare policy, it can not be defined correctly, but in the broad sense, the elderly who live alone over 60 to 65 years old are called elderly people living alone. Such living alone is difficult for an elderly person to live alone. For this reason, generally, local governments in each region provide government support to the elderly living alone, and welfare agencies in local governments also support the lives of the elderly living alone by means of their own medical headquarters. In addition, volunteers who care for the elderly living alone support the elderly living alone.

However, there is a limit to this support. The biggest limitation is that support is difficult to sustain.

There is a limit to the time when volunteers assist in the care of the elderly living alone, so inevitably the elderly living alone must spend most of their time alone. The problem that may arise here is that the elderly living alone is injured due to falling within the residential area. In the case of a typical family, if someone is injured, one of the other domestic partners may be able to detect and take action, but if they live alone, they may be in danger because they can not take action. In addition, elderly people often die because they are unable to move due to injury due to weak body and inconvenience. If a guardian is aware of an early injury and takes action, he or she can minimize such an accident. Therefore, there is a need for a system that can confirm whether an elderly person is injured or not.

Also, in the case of a family with children, it is necessary to have a system that can grasp information about the fire or gas leakage of the house when the parents go out.

On the other hand, Korean Patent Publication No. 10-2015-0061745 discloses a system for detecting an elderly elderly emergency situation based on an infrared ray depth camera capable of detecting an emergency situation.

The disclosed emergency situation detection system is a system for observing and monitoring elderly people living alone or a socially vulnerable class, and is installed in a residential area of a person to be supervised, such as the elderly living alone, and is equipped with an infrared ray projecting device for capturing an infrared ray image, A depth camera including a color camera for photographing and forming real-time image information, a biosensor for sensing a bio-signal of a subject to be monitored, and a central processor for analyzing the image and outputting the analyzed image, And an alarm generating device installed in the vicinity of the surveillance device, such as an area to be checked by the guardian, and an alarm output device for image confirmation and alarm output transmitted by the central processing unit.

Although the disclosed emergency situation detection system can observe and manage the elderly living alone or the socially vulnerable class, it requires expensive elevation cameras, biosensors, etc., and is a detection system for the elderly living alone. There was a shortage of this problem.

Accordingly, an object of the present invention is to provide an emergency monitoring system capable of quickly and accurately responding to emergency situations such as a fire as well as management of elderly living alone or socially vulnerable classes residing alone at a low cost.

According to an embodiment of the present invention, there is provided an emergency monitoring system including an illumination unit for emitting an LED light in a space, a motion sensor for detecting whether an object moves on the space, a temperature sensor for sensing temperature on the space, A control unit for receiving a motion signal or a temperature signal from the motion sensor or the temperature sensor to determine an emergency situation and for taking an image of the space through the camera when it is determined as an emergency, A terminal communication unit for performing communication with the illumination device, a terminal input unit for selecting at least one of a management object detection mode, an intruder detection mode and a fire detection mode for controlling the illumination device, Mode is selected through the terminal communication unit, A terminal control unit for transmitting the selected mode to the device and controlling the operation of the lighting device in the selected mode and receiving the image from the lighting device in the selected mode; Wherein the control unit receives the motion signal of the object by the motion sensor in the management subject detection mode and detects motion of the object from the time when the motion signal is last generated to the set time, The control unit determines that the object is in an emergency state, receives a motion signal of the object by the motion sensor in the intruder detection mode, determines an emergency situation when a motion signal is generated, and outputs a temperature signal from the temperature sensor in the fire detection mode And the temperature is lower than the set temperature The control unit judges the emergency situation, and when the control unit determines that the emergency is caused by the supervisor sensing mode, the intruder sensing mode and the fire sensing mode, the control unit operates the illumination unit to emit the LED light, The controller monitors the object in which the motion is generated through the motion sensor, rotates the camera toward the tracked object, captures the space, and the guardian terminal controls the set time and the set temperature.

In the emergency monitoring system according to the present invention, the motion sensor may include an acceleration sensor, an optical sensor, an electromagnetic sensor, a radiation sensor, or a thermal sensor.

The emergency monitoring system according to the present invention may further include a control server for receiving and outputting the image photographed by the camera from the illumination device.

In the emergency monitoring system according to the present invention, the guardian terminal receives the image from the lighting device through a mobile communication network.

In the emergency monitoring system according to the present invention, the lighting device may further include a gas detection sensor for detecting whether gas is leaked or a smoke detection sensor for detecting smoke.

In the emergency monitoring system according to the present invention, the controller transmits a sensed signal to the guardian terminal when gas is detected through the gas detection sensor or smoke is detected through the smoke detection sensor.

The emergency monitoring system according to the present invention receives the motion of the object by the motion sensor and judges that the motion is not an emergency from the time when the motion is first generated to the set time and judges it as an emergency and uses an expensive biosensor or the like It is possible to detect the emergency situation of the management subject.

In addition, the emergency monitoring system according to the present invention determines whether or not a fire is caused through a temperature sensor as well as monitoring a management subject, and when the emergency is determined, the camera operates to capture a space and transmit an image to a guardian terminal, The protector can cope with the emergency quickly and accurately and can help the rescue work.

1 is a configuration diagram illustrating an emergency monitoring system according to an embodiment of the present invention.
2 is a block diagram showing a configuration of a lighting apparatus according to an embodiment of the present invention.
3 is a block diagram illustrating a configuration of a guardian terminal according to an embodiment of the present invention.
4 is a block diagram illustrating a configuration of a control server according to an embodiment of the present invention.

In the following description, only parts necessary for understanding the embodiments of the present invention will be described, and the description of other parts will be omitted so as not to obscure the gist of the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings and the inventor is not limited to the meaning of the terms in order to describe his invention in the best way. It should be interpreted as meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely preferred embodiments of the present invention, and are not intended to represent all of the technical ideas of the present invention, so that various equivalents And variations are possible.

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

1 is a configuration diagram illustrating an emergency monitoring system according to an embodiment of the present invention.

Referring to FIG. 1, an emergency monitoring system 400 according to an exemplary embodiment of the present invention includes a lighting device 100, a guardian terminal 200, and a control server 300.

The lighting apparatus 100 emits light on a space where it is installed. Here, the space can be a home or office where the person to be managed resides. Here, the person to be managed can be the elderly living alone or the socially vulnerable class.

In addition, the lighting apparatus 100 may detect whether the management subject is moving on the space, and if the movement is not detected from the time when the motion is first generated to the preset time, the lighting apparatus 100 may determine that it is in an emergency and photograph the space. That is, the lighting apparatus 100 determines the state in which the management subject can not move through the movement.

The illumination device 100 transmits a signal for informing an emergency situation to the guardian terminal 200 when it is determined that it is in an emergency, and may transmit an image of the corresponding space to the guardian terminal 200 while transmitting a signal. Accordingly, the lighting apparatus 100 can support a clear decision by the guardian using the guardian terminal 200.

In addition, the lighting apparatus 100 senses the temperature in the space, and when the sensed temperature exceeds the set temperature, it is determined that it is in an emergency and the space can be photographed. That is, the lighting apparatus 100 determines whether or not fire has occurred through the temperature, and transmits a signal for notifying the emergency terminal 200 to the guardian terminal 200. When the guardian terminal 200 images the image of the corresponding space while transmitting the signal, . Accordingly, the lighting apparatus 100 can support a clear decision by the guardian using the guardian terminal 200.

In addition, the lighting apparatus 100 senses whether or not it is moving in a space, and when motion occurs, it can be determined that it is in an emergency and the space can be photographed. That is, the illumination device 100 senses an intruder through motion or not, and when the intruder intrudes, the image of the intruder can be photographed and transmitted to the guardian terminal 200.

The guardian terminal 200 is described as a representative example of a mobile communication terminal connected to the mobile communication network and capable of receiving images photographed from the illumination device 100 or a signal for notifying an emergency situation, The present invention can be applied to various terminals such as all information communication devices, multimedia terminals, wired terminals, fixed type terminals and IP (Internet Protocol) terminals. Also, the terminal may be a mobile phone, a portable multimedia player (PMP), a mobile Internet device (MID), a smart phone, a desktop, a tablet PC, a notebook, And an information communication device, which can be advantageously used in a mobile terminal having various mobile communication specifications.

When the emergency situation occurs, the guardian terminal 200 receives the image together with the occurrence of an emergency from the illumination device 100, and outputs the image to the screen. Accordingly, the guardian possessing the guardian terminal 200 can quickly recognize the emergency situation and cope with it.

When the emergency situation occurs, the control server 300 can receive the image together with the occurrence of the emergency situation from the lighting apparatus 100 and output the image screen. Here, the control server 300 can receive signals and images of the emergency situation from a plurality of lighting apparatuses 100 installed at different places, and manage the integrated signals and images. Here, the control server 300 may be a police station, a hospital, or the like.

Hereinafter, a lighting apparatus according to an embodiment of the present invention will be described in more detail with reference to the drawings.

2 is a block diagram showing a configuration of a lighting apparatus according to an embodiment of the present invention.

1 and 2, a lighting apparatus 100 according to an embodiment of the present invention includes an illumination unit 10, a motion sensor 20, a temperature sensor 30, a camera 40, a storage unit 50, A communication unit 60 and a control unit 70. [

The illumination unit 10 can emit light on the space. The lighting unit 10 may be a ceiling light installed in a home or office. The illumination unit 10 may be a fluorescent lamp, an LED, or the like.

In the embodiment of the present invention, the movement sensor 20, the temperature sensor 30, the camera 40, the storage unit 50, the communication unit 60 and the control unit 70 may be provided inside the case of the illumination unit 10 have.

The motion sensor 20 can detect whether the management subject is moving in the space. In addition, the motion sensor 20 can detect whether an intruder intrudes into the space. The movement sensor 20 may be an acceleration sensor, an optical sensor, an electromagnetic sensor, a radiation sensor, a thermal sensor, or the like capable of detecting motion in a space. The motion sensor 20 can transmit the sensed motion information to the controller 70. [

The temperature sensor 30 can sense the temperature on the space. Here, the temperature sensor 30 may be a thermal sensor and may be operated integrally with the motion sensor 20. [ That is, the temperature sensor 30 and the motion sensor 20 are constituted by a thermal sensor, so that motion and temperature can be detected together. Accordingly, the manufacturing cost of the lighting apparatus 100 according to the embodiment of the present invention can be reduced. The temperature sensor 30 may transmit the sensed temperature information to the controller 70. [

The camera 40 captures a space under the control of the control unit 70 when the control unit 70 determines the emergency by the motion sensor 20 or the temperature sensor 30 and determines that the situation is an emergency. The image photographed by the camera 40 can be transmitted to the guardian terminal 200 together with the emergency signal by the control unit 70. [ The camera 40 may be various types of cameras such as a CCD camera or a CMOS camera.

The storage unit 50 may store a program necessary for functional operation of the illumination device 100 by an apparatus for storing data. In particular, the storage unit 50 according to an embodiment of the present invention may store a program for determining an emergency situation based on motion information or temperature information received from the motion sensor 20 and the temperature sensor 30.

The communication unit 60 performs a function of transmitting and receiving data with the guardian terminal 200 or the control server 300. Here, the communication unit 60 transmits a signal regarding an emergency detected by the motion sensor 20 or the temperature sensor 30 and an image captured by the camera 40 in an emergency situation to the guardian terminal 200 or the control server 300).

The control unit 70 receives the motion information or the temperature information from the motion sensor 20 or the temperature sensor 30 and determines whether it is in an emergency situation. If it is determined as an emergency, the control unit 70 operates the camera 40, 60 to the guardian terminal 200 or the control server 300 via the network.

The control unit 70 may include a management subject detection module 70a, an intruder detection module 70b, and a fire detection module 70c.

The management subject detection module 70a receives the motion of the object by the motion sensor 20 and can determine that the motion is an emergency if motion is not detected from the time when the motion is finally generated to the preset time.

That is, the management subject detection module 70a is a module for monitoring the emergency situation for the elderly living alone or the socially vulnerable class living alone, and detects the movement in order to cope with situations in which the management subject can not move, If no movement occurs during the set time, it can be judged that the subject can not move. The management subject detection module 70a can operate the camera 40 to photograph a space when the management subject is determined as an emergency. The management subject detection module 70a can transmit the photographed image to the guardian terminal 200 or the control server 300 through the communication unit 60 so that the guardian can quickly and accurately cope with the emergency situation.

The intruder detection module 70b receives the movement of the object by the motion sensor 20, and can determine that it is in an emergency situation when a motion occurs.

That is, the intruder detection module 70b is a module for detecting whether or not an intruder is intruding at the time of going out or sleeping. If a motion is detected by the motion sensor 20, it can be determined that an intruder has intruded. If the intruder detection module 70b determines that it is in an emergency situation, the intruder detection module 70b can photograph the space by operating the camera. The intruder detection module 70b may transmit the photographed image to the guardian terminal 200 or the control server 300 through the communication unit 60 so that the guardian can quickly and accurately cope with the emergency situation.

The fire detection module 70c receives the temperature in the space by the temperature sensor 30, and can determine that it is in an emergency when the temperature exceeds the set temperature. That is, the fire detection module 70c is a module for detecting a fire situation at the time of going out. When the temperature exceeds the set temperature by the temperature sensor 30, it is determined that a fire has occurred and the camera 40 is operated So that a space can be photographed. The fire detection module 70c can transmit the photographed image to the guardian terminal 200 or the control server 300 through the communication unit 60 so that the guardian can quickly and accurately cope with the emergency situation. The fire detection module 70c transmits the photographed image to the guardian terminal 200 or the control server 300, thereby confirming the position of the person in the space when the fire occurs, thereby quickly and accurately performing the rescue operation.

The control unit 70 operates the illumination unit 10 to emit the LED light when the control unit 70 determines that the emergency is caused by the supervisor sensing mode, the intruder sensing mode, and the fire sensing mode. The generated object is traced, and the camera 40 is rotated so as to face the tracked object to photograph the space.

In addition, the illumination device 100 according to the embodiment of the present invention may further include a gas detection sensor 80 for detecting gas leakage or a smoke detection sensor 90 for detecting smoke.

The control unit 70 transmits a sensed signal to the guardian terminal 200 when gas is detected through the gas detection sensor 80 and transmits a sensed signal to the guardian terminal 200 when smoke is detected through the smoke detection sensor 90 ).

Hereinafter, a guardian terminal according to an embodiment of the present invention will be described in more detail.

3 is a block diagram illustrating a configuration of a guardian terminal 200 according to an embodiment of the present invention.

1 and 3, a guardian terminal 200 according to an exemplary embodiment of the present invention includes a terminal communication unit 110, a terminal input unit 120, a terminal display unit 130, a terminal storage unit 140, 150).

The terminal communication unit 110 may receive an image of a space together with an emergency signal through the mobile communication network when an emergency occurs from the lighting device 100. [ Also, the terminal communication unit 110 may transmit a control signal for controlling the illumination device 100 to the illumination device 100.

The terminal input unit 120 receives various information such as numbers and character information, sets various functions, and transmits signals to the terminal control unit 150 in relation to the function control. The terminal input unit 120 may include at least one of a keypad and a touchpad that generates an input signal according to a user's touch or operation. At this time, the terminal input unit 120 may be configured in the form of one touch panel (or a touch screen) together with the terminal display unit 130 to simultaneously perform input and display functions. The terminal input unit 120 may select various control interfaces provided from the terminal display unit 130, and may receive a set temperature or a set time.

The terminal display unit 130 can receive the image photographed in the emergency situation from the lighting apparatus 100 and output it to the screen. Also, the terminal display unit 130 can display various interfaces related to the control of the lighting apparatus 100 on the screen. In particular, the terminal display unit 130 may output various modes for controlling the illumination device 100 on the screen. For example, the mode for controlling the lighting apparatus 100 may be a management subject detection mode, an intruder detection mode, a fire detection mode, or the like. Also, the terminal display unit 130 may output an image of a space taken from the illumination device 100 through the terminal communication unit 110 on the screen. The terminal display unit 130 may be a liquid crystal display (LCD), a thin film transistor LCD (TFT-LCD), a light emitting diode (LED), an organic light emitting diode LEDs, active matrix organic light emitting diodes (AMOLED), active matrix OLEDs, retina displays, flexible displays, and three-dimensional displays.

The terminal storage unit 140 may store various application programs required for the functional operation of the guardian terminal 200. [ The terminal storage unit 140 provides the corresponding application program under the control of the terminal control unit 150 when activating each function at the request of the guardian. In particular, the terminal storage unit 140 may store an application program for outputting the image received from the illumination device 100 on the terminal display unit 130, and an application program for controlling the illumination device 100. [

The terminal control unit 150 may be an operating system and a process apparatus that drives each configuration. In particular, the terminal control unit 150 may output the image received from the illumination device 100 through the terminal display unit 130. [

The terminal control unit 150 may control the lighting apparatus 100 by transmitting the control signal input from the terminal input unit 120 to the lighting apparatus 100 through the terminal communication unit 110. [ The terminal control unit 150 may include a management object detection mode, an intruder detection mode, and a fire detection mode. The terminal control unit 150 may select at least one of the management object detection mode, the intruder detection mode, and the fire detection mode through the terminal input unit 120 and control the lighting apparatus 100 to operate in the corresponding mode.

Hereinafter, the configuration of the control server 300 according to the embodiment of the present invention will be described in more detail.

4 is a block diagram illustrating a configuration of a control server according to an embodiment of the present invention.

1 and 4, a control server 300 according to an exemplary embodiment of the present invention includes a server communication unit 210, a server input unit 220, a server display unit 230, a server storage unit 240, 250).

The server communication unit 210 can receive an image of a space together with an emergency signal via the mobile communication network when an emergency occurs from the lighting device 100. [ The server input unit 220 may transmit a control signal for controlling the illumination device 100 to at least one illumination device 100.

The server input unit 220 receives various information such as numbers and character information, sets various functions, and transmits signals to the server control unit 250 in connection with the function control. The server input unit 220 may include at least one of a keypad and a touchpad for generating an input signal according to a user's touch or operation. The server input unit 220 may select various control interfaces provided from the terminal display unit 130 and receive a set temperature or set time.

The server display unit 230 can display an image received from at least one illumination device 100 on the screen. The server display unit 230 may be configured to include a plurality of displays so that an administrator intuitively monitors emergency situations simultaneously. The server display unit 230 may display various modes for controlling the illumination device 100 on the screen. For example, the mode for controlling the lighting apparatus 100 may be a management subject detection mode, an intruder detection mode, a fire detection mode, or the like.

The server storage unit 240 may store various application programs required for the functional operation of the control server 300. [ The server storage unit 240 provides the application program under the control of the server control unit 250 when activating each function at the request of the administrator. In particular, the server storage unit 240 may store an application program for outputting an image received from the illumination device 100 on the server display unit 230, an application program for controlling the illumination device 100, and the like.

The server control unit 250 can control the lighting apparatus 100 by transmitting the control signal input from the server input unit 220 to the lighting apparatus 100 through the server communication unit 210. [ The server control unit 250 may include a management subject detection mode, an intruder detection mode, and a fire detection mode. The server control unit 250 may select at least one of the management object detection mode, the intruder detection mode, and the fire detection mode through the server input unit 220 to control the lighting apparatus 100 to operate in the corresponding mode.

In this way, the emergency monitoring system 400 according to the embodiment of the present invention receives the motion of the object by the motion sensor and determines that the motion is not an emergency from the time when the motion is first detected to the set time , An emergency situation of a management subject can be detected without using an expensive biosensor or the like.

In addition, the emergency monitoring system 400 according to the embodiment of the present invention determines whether or not a fire is caused through a temperature sensor as well as monitoring of a management subject, 200), the guardian can quickly and accurately cope with the emergency situation.

It should be noted that the embodiments disclosed in the drawings are merely examples of specific examples for the purpose of understanding, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

10: illumination unit 20: motion sensor
30: temperature sensor 40: camera
50: storage unit 60: communication unit
70: control unit 70a: management subject detection module
70b: intruder detection module 70c: fire detection module
100: illumination device 110:
120: terminal input unit 130: terminal display unit
140: terminal storage unit 200: protector terminal
210: server communication unit 220: server input unit
230: server display unit 240: server storage unit
250: server control unit 400: emergency monitoring system

Claims

An illumination unit for emitting an LED light on the space, a motion sensor for detecting movement of an object on the space, a temperature sensor for sensing a temperature on the space, a camera for photographing the space, A control unit for receiving a signal or a temperature signal to determine an emergency situation and for taking an image of the space through the camera when it is determined to be in an emergency state, and a communication unit for transmitting an image photographed by the camera under the control of the control unit A lighting device;
A terminal input unit for selecting at least one of a management object detection mode, an intruder detection mode, and a fire detection mode for controlling the illumination device, a terminal communication unit for performing communication with the illumination device, A terminal control unit for controlling the lighting device to operate in the selected mode by transmitting a mode selected by the lighting device through a communication unit and receiving the image from the lighting device in the selected mode; And a terminal output unit for receiving and outputting the image; Lt; / RTI >
Wherein,
When the supervisor selects the supervisor sensing mode, the supervisor senses a motion to quickly respond to an emergency in which the supervisor can not move, and when a motion does not occur during the set time, A management subject sensing module for sensing the space by operating the camera while operating the illumination unit and emitting the LED light, and delivering the photographed image to the guardian terminal;
When the guardian selects the intruder detection mode, if motion is detected in the space by the motion sensor, if it is determined that the intruder has intruded, the controller illuminates the illumination unit to emit the LED light, An intruder detection module for tracking the generated object, photographing the space by rotating the camera to face the tracked object, and delivering the photographed image to the guardian terminal;
Wherein the guardian terminal receives the temperature in the space by the temperature sensor when the protector terminal selects the fire detection mode and judges the emergency situation when the temperature exceeds the set temperature, A fire detection module for photographing the space by operating the camera in one state and delivering the photographed image to the guardian terminal; Lt; / RTI >
Wherein the guardian terminal controls the set time and the set temperature.

The method according to claim 1,
Wherein the motion sensor comprises an acceleration sensor, an optical sensor, an electromagnetic sensor, a radiation sensor or a thermal sensor.

The method according to claim 1,
The lighting apparatus is provided in plural,
A control server for receiving and outputting the image photographed by the camera from the plurality of lighting devices;
Wherein the emergency monitoring system further comprises:

The method according to claim 1,
Wherein the guardian terminal receives the image from the lighting device through a mobile communication network.

The method according to claim 1,
Wherein the illumination device further comprises a gas detection sensor for detecting whether gas is leaked or a smoke detection sensor for detecting smoke.

6. The method of claim 5,
Wherein the control unit transmits a sensed signal to the guardian terminal when gas is detected through the gas detection sensor or smoke is detected through the smoke detection sensor.