KR20200130670A - Fault diagnostic system in electric facility using odor and environmental sensors - Google Patents

Abstract

The present invention relates to an electrical facility failure diagnostic system capable of detecting an abnormality inside a switchboard using an olfactory sensor and an environmental sensor. According to an embodiment of the present invention, by installing the plurality of olfactory sensors for each area inside the switchboard, a location in which the abnormality occurs can be detected in advance, thereby taking emergency measures.

Description

Failure diagnosis system for electrical equipment using olfactory sensor and environmental sensor {FAULT DIAGNOSTIC SYSTEM IN ELECTRIC FACILITY USING ODOR AND ENVIRONMENTAL SENSORS}

The present invention relates to a system for diagnosing failures of electrical equipment, and more particularly, to a system for diagnosing failures of electric equipments capable of diagnosing internal failures of electric equipments using an olfactory sensor and an environmental sensor.

In a distribution device such as a switchgear, an automatic breakdown switch, arrester, power fuse, wattage meter, transformer, low voltage parking circuit breaker, branch breaker, etc. are installed inside the housing. At this time, the greatest risk of accidents in the switchgear is a fire due to temperature, flames, or deterioration of wires due to heat generated from power equipment that handles voltage conversion.

1 is a graph illustrating a development range of a sensor system according to a detection time, showing that a typical smoke sensor, a flame sensor, or an infrared photographing sensor has a slower response time than that of an odor detection sensor.

In particular, when an electric wire or an insulator starts to melt due to internal overheating, a burning odor occurs, and then a fire occurs on the electric wire or insulator. In order to monitor such a fire, a fire detection sensor is installed inside the switchboard, but it only performs a function of generating an alarm when a fire occurs, but does not provide an alarm before the fire occurs.

In addition, there is a Korean patent (10-1664326, switchgear having a deterioration diagnosis function using a deterioration sensor) that detects an alarm using a deterioration detection module, but the deterioration detection module is a method using infrared imaging, so the reaction speed is not fast. .

The present invention provides a system for diagnosing electrical equipment failure using a reliable olfactory sensor and an environmental sensor that detects an abnormality using a value detected by an olfactory sensor inside and outside a switchboard.

The technical problem to be achieved by the present invention is not limited to the technical problems mentioned above, and other technical problems that are not mentioned can be clearly understood by those of ordinary skill in the technical field to which the present invention belongs from the following description. There will be.

According to an aspect of the present invention, there is provided a system for diagnosing electrical equipment failure using an olfactory sensor and an environmental sensor.

The electrical equipment failure diagnosis system according to an embodiment of the present invention is installed inside the housing of the switchgear and includes an internal olfactory sensor unit that collects at least one of the concentrations of combustible gases and the concentration of fine dust inside the housing, and is located outside the housing of the switchgear. An external olfactory sensor unit that is installed and collects at least one of the concentrations of combustible gases outside the housing and the concentration of external fine dust, and information on the internal concentration measured by the internal olfactory sensor unit and information on the external concentration measured by the external olfactory sensor unit When the difference between the internal concentration information and the external concentration information is greater than or equal to a preset first threshold value, a maximum value is extracted from the internal concentration information, and the difference value between the extracted maximum value and the external concentration is determined in advance. It may include an abnormality detector for comparing two threshold values and generating an alarm signal when the second threshold value is exceeded.

According to an embodiment of the present invention, by installing a plurality of olfactory sensors for each area inside the electrical equipment, it is possible to detect the location of the abnormality in advance, so that emergency measures can be taken.

The effects of the present invention are not limited to the above effects, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a graph illustrating a development range of a sensor system according to detection time.
2 is a view for explaining a switchgear abnormality detection system according to an embodiment of the present invention.
3 is a conceptual diagram showing that each sensor is disposed when there are a plurality of internal olfactory sensors according to an embodiment of the present invention.
4 is a view showing that the olfactory sensors of the internal olfactory sensor unit according to an embodiment of the present invention are connected to the air intake pipe.
5 is a view showing a sensor mounting chamber in which an olfactory sensor, a temperature sensor, and a humidity sensor are mounted according to an embodiment of the present invention.
6 and 7 are views illustrating an example in which a plurality of sensor mounting chambers are connected according to an embodiment of the present invention.
8 is a flowchart sequentially illustrating a method for detecting an abnormality in a switchgear according to an embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be implemented in various different forms, and therefore is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and similar reference numerals are assigned to similar parts throughout the specification.

Throughout the specification, when a part is said to be "connected (connected, contacted, bonded)" with another part, it is not only "directly connected", but also "indirectly connected" with another member in the middle. "Including the case. In addition, when a part "includes" a certain component, it means that other components may be further provided, rather than excluding other components unless specifically stated to the contrary.

The terms used in the present specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance.

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

2 is a view for explaining a switchgear abnormality detection system according to an embodiment of the present invention.

2, the switchboard abnormality detection system according to the present invention includes an internal olfactory sensor unit 100, an external olfactory sensor unit 200, an abnormality detection unit 300, a server 400, and a mobile communication terminal 500. Can include.

Specifically, the internal olfactory sensor unit 100 may be installed inside the housing of the switchboard to measure the concentration by collecting at least one of combustible gases and fine dust inside the housing. The internal olfactory sensor unit 100 includes any of CO, CO2, O3, HCN, NO, NO2, NH2, SO2, H2S, COS, CS2, HCI, HF, HBr, alkanes, alkenes, benzene, phenol, aldehyde, and formaldehyde. In addition to being able to measure the concentration when one combustible gas is generated, the concentration of fine dust in the installation area can be collected and measured.

The internal olfactory sensor unit 100 may include a plurality of olfactory sensors. The olfactory sensor may measure the concentration of any one of the combustible gases, and at the same time measure the concentration of fine dust.

When a plurality of internal olfactory sensor units 100 are disposed, each may be disposed in a preset area. This will be described later with reference to FIGS. 3 and 4.

In addition, the internal olfactory sensor unit 100 may include a plurality of temperature sensors and humidity sensors. At this time, each of the temperature sensor and the humidity sensor may be installed to match each of the olfactory sensor.

The external olfactory sensor unit 200 may be installed outside the housing of the switchboard to measure the concentration by collecting at least one of the combustible gases and fine dust outside the housing. The external olfactory sensor unit 200, like the internal olfactory sensor unit 100, is CO, CO2, O3, HCN, NO, NO2, NH2, SO2, H2S, COS, CS2, HCI, HF, HBr, alkanes, alkenes, benzene , Phenol, aldehyde, formaldehyde, the concentration of any one of combustible gases can be measured, as well as the concentration of fine dust in the installation area can be collected and measured.

The external olfactory sensor unit 200 may include at least one olfactory sensor. At this time, the olfactory sensor may measure the concentration of any one of the combustible gases, and at the same time, the concentration of fine dust.

In addition, the external olfactory sensor unit 200 may further include at least one temperature sensor and a humidity sensor for measuring temperature and humidity outside the housing.

On the other hand, when the components inside the switchgear housing generate heat, CO and CO2 are generated. At this time, in the case of nitrogen-containing plastics other than CO and CO2, gases such as HCN, NO, NO2, and NH2 are generated during combustion, and gases such as SO2, H2S, COS, and CS2 are generated during combustion of sulfur-containing plastics. In addition, O3 may be generated when an arc is generated inside the switchgear housing.

The internal and external olfactory sensor units 100 and 200 transmit information on the concentration of at least one of the above-described gases to the abnormality detecting unit 300.

It is preferable that the olfactory sensor provided in the internal olfactory sensor unit 100 and the olfactory sensor provided in the external olfactory sensor unit 200 are provided as sensors for measuring the same gas. That is, the olfactory sensor provided in the inner and outer olfactory sensor units 100 and 200 uses the same type of olfactory sensor.

The abnormality detection unit 300 may generate an alarm signal by comparing internal concentration information measured by the internal olfactory sensor unit 100 with external concentration information measured by the external olfactory sensor unit 200. The generated alarm signal may be transmitted to the server 400 or the mobile communication terminal 500. In particular, when the difference value between the internal concentration information and the external concentration information is greater than or equal to a preset first threshold value, the abnormality detection unit 300 extracts the maximum value having the maximum concentration among the internal concentration information, and the extracted maximum value and the The difference value of the external concentration is calculated and compared with the second threshold value. As a result of the comparison, when the difference value exceeds the second threshold value, it is recognized as a fire and an alarm may be generated.

In this case, the first threshold value and the second threshold value may be a lower limit value or a value that occurs most when an abnormality occurs among experimentally collected data.

Since the abnormality detecting unit 300 may cause an error when detecting the occurrence of a fire in advance only with the concentration information measured by the internal olfactory sensor unit 100, the abnormality detecting unit 300 may reduce the internal and external olfactory sensor units ( 100, 200), the difference in the concentration of gas and fine dust measured in the above is used. That is, since air outside the housing of the switchgear may be introduced to increase the gas concentration and the fine dust concentration, it is possible to increase reliability by using a difference between the gas concentration and the fine dust concentration inside and outside the switchgear housing.

Meanwhile, the abnormality detection unit 300 may increase reliability when an alarm is generated through signals input from internal and external temperature sensors and humidity sensors. For example, in a normal case, a change in temperature input from the temperature sensor and the humidity sensor of the internal olfactory sensor unit 100 does not show a large change, and changes according to the temperature change observed by the external olfactory sensor unit 200. However, just before the fire occurs, the rate of increase in the internal temperature may be greater than the external temperature. Therefore, such a change can be detected by the abnormality detector 300 and referred to when generating an alarm signal.

Even in the case of humidity, if the amount of change is large for a certain period of time, there is a sign of fire, so these values can also be referred to.

On the other hand, the abnormality detection unit 300 may pattern the concentration values input from the plurality of olfactory sensors of the internal olfactory sensor unit 100, and display them as a grade according to a set value range. Since the abnormality detecting unit 300 may have different concentrations input from the plurality of olfactory sensors of the internal olfactory sensor unit 100, the concentration input to the external olfactory sensor unit 200 is compared, and according to each comparison result The result can be displayed in color or color pattern.

The abnormality detection unit 300 may include a sensor information input unit 310, an abnormality detection determination unit 320, an alarm signal generation unit 330, and a communication unit 340.

The sensor information input unit 310 collects signals input from the internal olfactory sensor unit 100 and the external olfactory sensor unit 200 and provides them to the abnormality detection determination unit 320. The sensor information input unit 310 can receive location information, concentration information, temperature, and humidity information of each olfactory sensor, and the concentration information, temperature, and humidity information match the location information of the olfactory sensor to detect an abnormality detection unit 320 Can be provided to.

The abnormality detection determination unit 320 derives a difference value between the internal concentration information input to the internal olfactory sensor unit 100 and the external concentration information input from the external olfactory sensor unit 200, and compares the difference with a first threshold value. The abnormality detection determination unit 320 includes concentration information of gas and fine dust input from a plurality of olfactory sensors of the internal olfactory sensor unit 100 and concentration information of gas and fine dust input from the external olfactory sensor unit 200 They are compared to each other to derive difference values, and each difference value and a first threshold value are compared. As a result of the comparison, when there is a difference value exceeding the first threshold value, a value having the maximum value among them is derived. Subsequently, the abnormality detection determination unit 320 calculates a difference value between the derived maximum value and the external concentration, and compares it with a second threshold value. If there is a difference value exceeding the second threshold value, the abnormality detection determination unit 320 may determine that an abnormality has occurred and transmit a signal to the alarm signal generation unit 330 to generate an alarm signal.

For example, the abnormality detection determination unit 320 may determine that there is no abnormality when the concentration information input from the plurality of olfactory sensors of the internal olfactory sensor unit 100 is the same as or lower than the external concentration information.

The alarm signal generator 330 may generate an alarm signal to warn of the occurrence of fire in the switchboard to the server 400 or the mobile communication terminal 500.

The communication unit 340 may transmit an alarm signal to the server 400 or the mobile communication terminal 500. The communication unit 340 may include at least one of a communication module using a wireless signal protocol such as 3G, LTE, and 5G, a wireless communication module using a Wifi communication protocol, and a wired communication module using a wired communication protocol. .

In addition, the communication unit 340 may transmit all signals of the abnormality detection unit 300 to the server 400.

The server 400 may transmit an alarm signal input from the communication unit 340 to a terminal (computer, laptop, mobile phone) of a person concerned. In addition, the server 400 may store all signals input from the abnormality detector 300.

The mobile communication terminal 500 may be a smart phone or a mobile phone carried by an administrator. The mobile communication terminal 500 may display an alarm transmitted from the abnormality detection unit 300. In addition, the mobile communication terminal 500 may access the server 400 to monitor the internal state of the switchboard.

In the above description, for example, the abnormality detection unit 300 is separately provided, but the abnormality detection unit 300 may be provided in the server 400 or the mobile communication terminal 500.

In addition, the abnormality detection unit 300 may be integrally provided with any one internal olfactory sensor of the internal olfactory sensor unit 100, or may be integrally provided with any one external olfactory sensor of the external olfactory sensor unit 200. .

3 is a conceptual diagram showing that each sensor is disposed when there are a plurality of internal olfactory sensors according to an embodiment of the present invention, and FIG. 4 is a diagram illustrating that the olfactory sensors of the internal olfactory sensor unit according to an embodiment of the present invention absorb air It is a diagram showing the connection to the engine.

Referring to FIGS. 3 and 4, one olfactory sensor may be disposed for each of a plurality of spaces.

Typically, the switchboard has an outer housing generally forming a rectangular parallelepiped. Inside, electrical devices such as wiring, circuit breakers, switches, and transformers are located, and the interior space also has a rectangular parallelepiped shape. In this case, the plurality of olfactory sensors may be installed at a predetermined location (set by a user), respectively.

In order to efficiently arrange the olfactory sensor, a virtual space can be divided as shown in FIG. 3. 3 is divided into 12 spaces, and one internal olfactory sensor 110 may be located in each space. In this case, the internal olfactory sensor 110 may be provided with a wireless communication module to provide the detected concentration information to the abnormality detection unit 300. The internal olfactory sensor 110 may be provided with an intake fan to measure precise concentration, or may not have an intake fan to reduce weight or size.

When there is no intake fan in the individual olfactory sensor 110, the concentration of the plurality of olfactory sensors 110 can be accurately measured through one intake fan.

As shown in FIG. 4, a first main suction pipe 152 is formed in a transverse direction so that the air suction pipes 152, 162, 172 cross each space of FIG. 3, and both ends of the first main suction pipe 152 A second main suction pipe 162 is formed connecting them. Further, auxiliary suction pipes 172 are formed in the vertical direction at each point where the first and second main suction pipes 152 and 162 intersect. In this case, both the first and second main suction pipes 152 and 162 and the auxiliary suction pipe 172 may be connected. In addition, an auxiliary pipe 182 connected to the intake fan 190 may be provided in any one of the first and second main suction pipes 152 and 162.

An internal olfactory sensor 110 is installed in the auxiliary pipe 182. Accordingly, even when one intake fan 190 is used, the reliability of the concentration detected by the internal olfactory sensors 110 can be improved.

5 is a diagram illustrating a sensor mounting chamber in which an olfactory sensor, a temperature sensor, and a humidity sensor are mounted according to an embodiment of the present invention.

Referring to FIG. 5, the sensor mounting chamber 600 may include a fixing part 610 and a connection part 650.

Specifically, the fixing part 610 may be formed in the shape of a screw such as a bolt, and is composed of a body 612 and a mounting part 614. The body 612 has a cylindrical shape and is connected to the auxiliary suction pipe 172 in the longitudinal direction to form a flow path 616 through which air flows. The body 612 may have a through hole 618 exposing the flow path 616 so that the internal olfactory sensor 110 or a temperature sensor and a humidity sensor (not shown) are mounted. In this case, the through hole 618 may be formed in a direction perpendicular to the flow path 616. The mounting portion 614 has an outer diameter larger than that of the body 612 and may be mounted on a portion of the connection portion 650 later. In the above, the body 612 has been described as being cylindrical, but is not limited thereto and may be formed in various shapes in which the flow path 616 and the through hole 618 can be formed.

The connection portion 650 is formed in a hexahedral shape, and four surfaces excluding the upper and lower surfaces are formed to be open. Insertion holes 652 into which the body 612 of the fixing portion 610 can be inserted may be formed on the upper and lower surfaces.

6 and 7 are views illustrating an example in which a plurality of sensor mounting chambers are connected according to an embodiment of the present invention.

As shown in FIG. 6, two sensor mounting chambers 600 may be vertically coupled. At this time, the olfactory sensor may be installed in any one of the two sensor mounting chambers, and a temperature sensor and a humidity sensor may be installed in the other. In this case, as shown in FIG. 7, four sensor mounting chambers may be combined, an olfactory sensor may be installed in each of the two sensor mounting chambers, and a temperature sensor and a humidity sensor may be installed in the rest. In addition, an olfactory sensor may be installed in each of the three sensor mounting chambers, and a temperature sensor and a humidity sensor may be installed in the other.

The combination of the sensor mounting chamber may be combined in various ways other than FIGS. 6 and 7.

Meanwhile, the switchboard abnormality detection system according to the exemplary embodiment of the present invention may further include a thermal imaging camera. The thermal imaging camera may photograph the inside of the housing and transmit an alarm to the server or mobile communication terminal when the thermal image is above a set temperature. The thermal imaging camera may improve an abnormality detection effect by photographing a point where the internal olfactory sensor unit is not installed.

8 is a flowchart sequentially illustrating a method of detecting an abnormality in a switchgear according to an embodiment of the present invention.

Referring to FIG. 8, in step S100, the switchboard abnormality detection system receives internal concentration information measured by an internal olfactory sensor unit located inside the housing of the switchboard. The switchboard abnormality detection system receives internal concentration information including a gas concentration and a fine dust concentration detected by an internal olfactory sensor unit having a plurality of internal olfactory sensors. In this case, when a temperature sensor and a humidity sensor are installed, temperature and humidity information may be included in the internal concentration information.

Next, in step S200, the switchboard abnormality detection system receives external concentration information measured by an external olfactory sensor unit installed outside the housing of the switchboard.

The switchboard abnormality detection system receives external concentration information including gas concentration and fine dust concentration detected by the external olfactory sensor. In this case, when a temperature sensor and a humidity sensor are installed, temperature and humidity information outside the housing may also be included in the external concentration information.

In step S300, the switchboard abnormality detection system compares a difference value between the internal concentration included in the internal concentration information and the external concentration included in the external concentration information with a preset first threshold value. Specifically, the switchboard abnormality detection system calculates a difference value between the concentration information input for each of the plurality of internal olfactory sensors and the concentration information input from the external olfactory sensor unit in advance. At this time, the difference value of the concentration information measured at the same time is calculated.

In step S400, when the difference value is larger than the first threshold value, the switchboard abnormality detection system extracts a maximum value from the internal concentration information. In the switchboard abnormality detection system, since there are a plurality of internal olfactory sensors, a value having the maximum value among the internal concentration information is selected. Here, the first threshold value may be a numerical value obtained experimentally, and may be a lower limit value detected when an abnormality occurs experimentally, or a maximum detection value.

In step S500, the switchboard abnormality detection system calculates a difference value between the maximum value and the external concentration, and compares a preset second threshold value. Prior to the occurrence of a fire, the switchboard abnormality detection system experimentally sets the maximum detection value or the lower limit value among the values of the concentration of combustible gas and the concentration of fine dust as a second threshold value, and compares it with the detected difference value.

In step S600, the switchboard abnormality detection system generates an alarm signal indicating that a fire may occur if the difference value exceeds the second threshold value.

All of the values generated above may be transmitted to and stored in a server, and may be used as basic data when setting the first threshold value or the second threshold value. In addition, the collected information may be displayed in colors, images, or numbers.

The switchboard abnormality detection system may transmit the generated alarm signal to a server or a mobile communication terminal.

The above-described embodiments of the present invention can be implemented through various means. Embodiments of the present invention may be implemented by hardware, firmware, software, or a combination thereof. In the case of implementation by hardware, the method according to embodiments of the present invention includes one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), It can be implemented by field programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, and the like. In the case of implementation by firmware or software, the method according to the embodiments of the present invention may be implemented in the form of a module, procedure, or function that performs the functions or operations described above. A computer program in which software codes and the like are recorded may be stored in a computer-readable recording medium or a memory unit and driven by a processor. The memory unit may be located inside or outside the processor, and may exchange data with the processor through various known means. In addition, combinations of each block of the block diagram attached to the present invention and each step of the flowchart may be performed by computer program instructions. Since these computer program instructions can be mounted on the encoding processor of a general-purpose computer, special purpose computer or other programmable data processing equipment, the instructions executed by the encoding processor of the computer or other programmable data processing equipment are each block of the block diagram or Each step of the flow chart will create a means to perform the functions described. These computer program instructions can also be stored in computer-usable or computer-readable memory that can be directed to a computer or other programmable data processing equipment to implement a function in a particular way, so that the computer-usable or computer-readable memory It is also possible to produce an article of manufacture in which the instructions stored in the block diagram contain instruction means that perform the functions described in each block of the block diagram or each step of the flow chart. Computer program instructions can also be mounted on a computer or other programmable data processing equipment, so that a series of operating steps are performed on a computer or other programmable data processing equipment to create a computer-executable process to create a computer or other programmable data processing equipment. It is also possible for the instructions to perform the processing equipment to provide steps for performing the functions described in each block of the block diagram and each step of the flowchart. In addition, each block or each step may represent a module, segment, or part of code containing one or more executable instructions for executing a specified logical function. It should also be noted that in some alternative embodiments, functions mentioned in blocks or steps may occur out of order. For example, two blocks or steps shown in succession may in fact be performed substantially simultaneously, or the blocks or steps may sometimes be performed in the reverse order depending on the corresponding function.

As such, those skilled in the art to which the present invention pertains will be able to understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. Therefore, the embodiments described above are illustrative in all respects and should be understood as non-limiting. The scope of the present invention is indicated by the claims to be described later rather than the detailed description, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention. .

100: internal olfactory sensor unit
110: internal olfactory sensor
152: first main suction pipe
162: second main suction pipe
172: auxiliary suction pipe
182: Assistant Officer
190: intake fan
200: external olfactory sensor unit
300: abnormality detection unit
310: sensor information input unit
320: abnormality detection judgment unit
330: alarm signal generation unit
340: Ministry of Communications
400: server
500: mobile communication terminal
600: sensor mounting chamber
610: fixed part
612: body
614: mount
616: Euro
618: through hole
650: connection
652: insertion hole

Claims (1)

An internal olfactory sensor unit installed inside the housing of the switchgear and collecting at least one of the concentrations of combustible gases and the concentration of fine dust inside the housing;
A sensor mounting chamber in which the internal olfactory sensor of the internal olfactory sensor unit is mounted;
An external olfactory sensor unit installed outside the housing of the switchgear and collecting at least one of the concentrations of combustible gases outside the housing and the concentration of fine dust outside the housing; And
The internal concentration information when the difference between the internal concentration information and the external concentration information is greater than or equal to a preset first threshold value by comparing the internal concentration information measured by the internal olfactory sensor unit with the external concentration information measured by the external olfactory sensor unit An abnormality detector configured to extract the maximum value from among and compare the difference value between the extracted maximum value and the external concentration to a preset second threshold value and generate an alarm signal when the second threshold value is exceeded,
The sensor mounting chamber
A body having a cylindrical shape and a flow path through which air flows in the longitudinal direction;
A through hole formed in the body to expose a flow path so that an internal olfactory sensor is mounted;
A mounting portion having an outer diameter larger than that of the body;
The outer shape is formed in a hexahedral shape, and the connection portion formed to be open on four surfaces excluding the upper and lower surfaces;
Including; an insertion hole into which the body can be inserted,
Each of the plurality of internal olfactory sensors is arranged in each space divided into rows and columns.
The abnormality detection unit
A sensor signal input unit for receiving the internal concentration information and external concentration information input to the internal olfactory sensor unit and the external olfactory sensor unit;
The internal concentration information received by the sensor signal input unit is compared with the external concentration information, and when the difference between the internal concentration information and the external concentration information is greater than or equal to the first threshold value, a maximum value among the internal concentration information is extracted, and And an abnormality detection determining unit comparing the extracted maximum value and a second threshold value;
An alarm signal generator for generating the alarm signal; And
Including a communication unit for transmitting the alarm signal to an external server or mobile communication terminal,
The internal olfactory sensor unit comprises a plurality of internal olfactory sensors for measuring at least one of the concentrations of the combustible gas and the concentration of fine dust, respectively.

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