WO2023132594A1

WO2023132594A1 - Fire detector and fire detector operation method

Info

Publication number: WO2023132594A1
Application number: PCT/KR2023/000053
Authority: WO
Inventors: 조영진
Original assignee: 주식회사 로제타텍
Priority date: 2022-01-04
Filing date: 2023-01-03
Publication date: 2023-07-13
Also published as: KR20230105475A

Abstract

A fire detector according to an embodiment of the present invention may include: a first sensor for detecting smoke; a second sensor for detecting a first material; and a determination part for generating fire information, wherein, after the first sensor detects the smoke, the determination part operates in a detection mode when the second sensor detects the first material, and determines as a non-fire alarm when the second sensor does not detect the first material, and the determination part generates fire information on the basis of a concentration of the first material when operating in the detection mode.

Description

Smoke detectors and how they work

The present invention relates to a fire detector with improved reliability for determining the occurrence of a fire and a non-fire alarm and a method for detecting a fire.

A fire alarm is a device that detects smoke from a fire with a fire detector and informs of a fire situation when a fire occurs. Since a fire alarm uses a fire detector to determine a fire, there is a high possibility of causing a malfunction by mistaking smoke or cigarette smoke emitted when cooking food as fire smoke. If the smoke alarm continuously malfunctions due to the above factors, users may lose trust in the smoke alarm and turn off the power of the smoke alarm normally. In this case, users may be exposed to the risk of fire even when an actual fire occurs in a building in which a fire alarm is installed.

An object of the present invention is to provide a fire detector with improved reliability for determining the occurrence of a fire and a non-fire alarm, and a method for detecting a fire.

A fire detector according to an embodiment of the present invention includes a first sensor for detecting smoke, a second sensor for detecting a first substance, and a determination unit for generating fire information, wherein the determination unit determines that the first sensor detects the smoke After detecting the first substance, the second sensor operates in a detection mode when it detects the first substance, and if it does not detect it, it determines that it is a non-fire alarm, and the determination unit operates in the detection mode, based on the concentration of the first substance Fire information can be generated.

The determination unit may generate the fire information when the concentration of the first material increases compared to the previous one in the detection mode.

The first material may be carbon monoxide.

The sensor may further include a controller configured to set the sensing sensitivity of the second sensor to different first, second, and third steps according to the installation location.

The determination unit may generate the fire information when the concentration of the first material exceeds the detection sensitivity.

A third sensor for sensing a second material different from the first material may be further included.

The determination unit may generate the fire information based on the concentration of the first material and the concentration of the second material in the sensing mode.

The second material may be a volatile organic compound (VOC).

A fire detector operating method according to an embodiment of the present invention includes detecting smoke by a first sensor, detecting a first substance by a second sensor after detecting the smoke, and detecting the first substance when the first substance is detected. , operating in a sensing mode, and determining a non-fire alarm when the first material is not detected, and generating fire information based on the concentration of the first material in the sensing mode.

Generating the fire information may include generating the fire information when the concentration of the first material increases compared to the previous one.

The method may further include sensing, by a third sensor, a second material different from the first material.

Generating the fire information may further include determining the concentration of the first substance and generating the fire information based on the concentration of the second substance.

Determining the concentration of the first material may include determining whether the concentration of the first material exceeds a sensing sensitivity.

Generating the fire information based on the concentration of the second material may be performed when the concentration of the first material exceeds the detection sensitivity.

As noted above, a fire detector may include a plurality of sensors. The fire detector may detect smoke using the first sensor, and then generate fire information or determine the fire as a non-fire alarm depending on whether the second sensor and/or the third sensor detect the smoke. Compared to conventional fire detectors that determine the occurrence of a fire by determining only smoke, the fire detector of the present invention can reduce the possibility of determining a non-fire alarm as a fire. Accordingly, it is possible to provide a fire detector with improved reliability and a fire detector operating method.

1 illustrates a fire alarm system according to one embodiment of the present invention.

2 is a perspective view illustrating a fire detector according to an embodiment of the present invention.

3 is a flowchart illustrating a method of operating a fire detector according to an embodiment of the present invention.

4 is a diagram illustrating an internal structure of a first sensor according to an embodiment of the present invention.

5 is a diagram illustrating an operation of a first sensor when smoke is generated according to an embodiment of the present invention.

6 illustrates a place where a plurality of fire detectors are disposed according to an embodiment of the present invention.

In this specification, when an element (or region, layer, section, etc.) is referred to as being “on,” “connected to,” or “coupled to” another element, it is directly placed/placed on the other element. It means that they can be connected/combined or a third component may be placed between them.

Like reference numerals designate like components. Also, in the drawings, the thickness, ratio, and dimensions of components are exaggerated for effective description of technical content. “And/or” includes any combination of one or more that the associated elements may define.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise.

In addition, terms such as “below”, “lower side”, “above”, and “upper side” are used to describe the relationship between components shown in the drawings. The above terms are relative concepts and will be described based on the directions shown in the drawings.

Terms such as "include" or "have" are intended to indicate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but that one or more other features, numbers, or steps are present. However, it should be understood that it does not preclude the possibility of existence or addition of operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In addition, terms such as terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined herein, interpreted as too idealistic or too formal. It shouldn't be.

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

Referring to FIG. 1 , the fire alarm system 10 may detect a fire situation. The fire alarm system 10 may include a plurality of fire detectors 100 , a repeater 200 , a receiver 300 , and a first server 400 .

The plurality of fire detectors 100 may be a system for detecting whether a fire has occurred. 1 shows five fire detectors 100 as an example, but is not limited thereto.

Each of the plurality of fire detectors 100 may detect the occurrence of a fire. Each of the plurality of fire detectors 100 may transmit a first fire detection signal SG-1 to an adjacent fire detector 100 and/or a repeater 200.

The first fire detection signal SG-1 may include a first signal SG-1a and a second signal SG-1b. The first signal SG-1a may be a signal generated by the fire detector 100 detecting the occurrence of a fire. The second signal SG-1b may be a signal amplified by the fire detector 100.

As a method for transmitting and receiving the first fire detection signal SG-1, a radio frequency (RF) communication method may be used. The RF communication method may be a communication method of exchanging information by radiating radio frequencies. As a broadband communication method using frequency, it is less affected by climate and environment and can be highly stable. The RF communication method may interwork with voice or other additional functions and may have a high transmission speed. For example, the RF communication method may use a frequency of 447 MHz to 924 MHz band. However, this is exemplary and in one embodiment of the present invention, communication methods such as Ethernet, Wifi, LoRA, M2M, 3G, 4G, LTE, LTE-M, Bluetooth, or WiFi Direct may be used.

In one embodiment of the present invention, the RF communication method may include a Listen Before Transmission (LBT) communication method. This is a frequency selection method in which another frequency is selected again when it is determined that the selected frequency is occupied by another system. For example, a node intending to transmit may first listen to the medium, determine if it is dormant, and then flow a backoff protocol prior to transmission. By using such an LBT communication method to process data in a distributed manner, it is possible to prevent a collision between signals in the same band.

The repeater 200 may communicate with the plurality of fire detectors 100 and the RF. For example, repeater 200 may communicate with 40 fire detectors 100 . The repeater 200 may receive the first fire detection signal SG-1 from the plurality of fire detectors 100. The repeater 200 may convert the first fire detection signal SG-1 into a second fire detection signal SG-2. The repeater 200 may transmit the second fire detection signal SG-2 to the receiver 300.

The repeater 200 may be synchronized in time with each of the plurality of fire detectors 100 . This will be described later.

The RF communication method may be used as a method of transmitting the second fire detection signal SG-2. That is, the repeater 200 and the receiver 300 may perform the RF communication.

The receiver 300 may receive the second fire detection signal SG-2 from the repeater 200. The receiver 300 may convert the second fire detection signal SG-2 into a third fire detection signal SG-3. The receiver 300 may transmit the third fire detection signal SG-3 to the first server 400.

The RF communication method may be used as a method of transmitting the third fire detection signal SG-3. That is, the receiver 300 and the first server 400 may perform the RF communication.

The first server 400 may determine a fire situation based on the third fire detection signal SG-3 received from the receiver 300. The first server 400 may determine validity of the third fire detection signal SG-3.

The first server 400 may receive big data from an external second server. The big data may be stored in the memory of the second server. However, this is just an example and the big data according to an embodiment of the present invention may be stored in the server memory of the first server 400 .

The big data may include surrounding environment data for determining whether a fire has occurred. For example, the surrounding environment data includes data corresponding to the probability of occurrence of fire by date, data corresponding to probability of occurrence of fire by time, data corresponding to probability of occurrence of fire by space, data corresponding to probability of occurrence of fire by temperature, and humidity. It may include at least one of data corresponding to the probability of occurrence of a fire by type, data corresponding to the probability of occurrence of a fire by weather, data corresponding to the probability of occurrence of a fire by industry, and data corresponding to the probability of occurrence of a fire by each user.

For example, the data corresponding to the fire occurrence probability for each date may include a fire occurrence probability for each day of the week and a fire occurrence probability for each month. The data corresponding to the fire occurrence probability by time may include the fire occurrence probability classified into dawn, morning, afternoon, evening, or late night. The data corresponding to the probability of occurrence of fire for each space may include the probability of occurrence of fire classified into urban areas, mountainous areas, beaches, rural areas, and the like. The data corresponding to the fire occurrence probability for each temperature may include a fire occurrence probability classified into spring, summer, autumn, or winter. The data corresponding to the fire occurrence probability for each humidity may include a fire occurrence probability for each specific humidity value. The data corresponding to the fire occurrence probability for each weather may include a fire occurrence probability classified as a sunny day, a cloudy day, or a rainy day. The data corresponding to the fire occurrence probability for each type of business may include a fire occurrence probability classified into a home, a restaurant, a factory, or an office. The fire occurrence probability for each user may include a fire occurrence probability classified by age, occupation, or gender.

The big data may be periodically updated.

The first server 400 may include an algorithm including an artificial intelligence model capable of determining a false alarm.

The first server 400 may determine the validity of the third fire detection signal SG-3 based on the big data and the value detected by each of the plurality of fire detectors 100 based on different criteria for each situation. For example, the first server 400 may determine whether the values detected by the plurality of fire detectors 100 are invalid data by using the big data.

When the first server 400 determines that the third fire detection signal SG-3 is a valid signal, a warning message and location information may be transmitted to the plurality of users 20 .

The plurality of users 20 may include, for example, a fire station, users where a fire has occurred, the Ministry of Public Safety and Security (or a public institution related to public safety), and the like. A plurality of users 20 may receive a fire warning message in the form of a text message, video message, or voice message through a wired phone, smart phone, or other portable terminal.

The first server 400 may transmit the fire warning message to the terminal MD.

When the first server 400 determines that the third fire detection signal SG-3 is not valid, the third fire detection signal SG-3 may be ignored. Thus, the fire alarm system 10 can prevent false alarms. The non-fire alarm means that the fire alarm system 10 operates by considering it as a fire even though it is not a fire.

In addition, when the first server 400 determines that the third fire detection signal SG-3 is invalid, the first server 400 controls the alarms of the plurality of fire detectors 100 not to sound. A signal may be transmitted to the plurality of fire detectors 100 .

2 is a perspective view illustrating a fire detector according to an embodiment of the present invention, and FIG. 3 is a flowchart illustrating a method of operating a fire detector according to an embodiment of the present invention.

Referring to FIGS. 1 to 3 , a plurality of fire detectors 100 are provided, and each of the plurality of fire detectors 100 may include different unique address information.

The fire detector 100 may be disposed on a plane defined by a first direction DR1 and a second direction DR2 crossing the first direction DR1. Hereinafter, a direction substantially perpendicular to the plane defined by the first and second directions DR1 and DR2 is defined as a third direction DR3. Also, in the present invention, “on a plane” may be defined as a state viewed from the third direction DR3.

The fire detector 100 includes a first sensor (SS1), a second sensor (SS2), a third sensor (SS3), a sensing memory unit (MM), a sensing communication unit (ATN), an amplifier unit (AMP), and a battery unit (TT1). ), a control unit CC, and a determination unit JD.

The first sensor SS1 may detect smoke (S100). A smoke detection operation of the first sensor SS1 will be described later.

When a fire occurs, smoke may be generated, and the fire detector 100 may detect the smoke through the first sensor SS1.

The second sensor SS2 may detect the first material (S200). The first material may be one of materials produced when a fire occurs. For example, the first material may include carbon monoxide (CO).

Carbon monoxide is a colorless and odorless compound composed of carbon and oxygen that is produced by incomplete combustion of carbon compounds. Carbon monoxide is a poisonous gas that is produced in fires and blocks the transport of oxygen in the blood. Therefore, rapid fire detection is required.

The third sensor SS3 may detect a second material different from the first material (S400). The second material may be one of materials produced when a fire occurs. For example, the second material may include volatile organic compounds (VOCs).

Volatile organic compounds may refer to liquid or gaseous organic compounds that easily evaporate into the atmosphere due to their low boiling point. Volatile organic compounds are carcinogenic substances and can be very harmful to the human body. Therefore, rapid fire detection is required.

Unlike the present invention, the smoke may be non-fire, such as steam generated in the kitchen or smoke caused by cigarette smoke. If the fire detector includes only a sensor for detecting smoke, it may falsely detect a non-fire alarm. If the fire detector continuously malfunctions due to the above factors, users may lose trust in the fire detector and turn off the power of the fire detector normally. In this case, users may be exposed to the risk of fire even when an actual fire occurs in a building in which a fire detector is installed. However, according to the present invention, the fire detector 100 may include a plurality of sensors SS1, SS2, and SS3. The fire detector 100 detects smoke using the first sensor SS1, and then generates fire information or detects a fire depending on whether the second sensor SS2 and/or the third sensor SS3 detect the smoke. It can be judged as a non-fire alarm. That is, the fire detector 100 may determine a fire by combining values detected by the first to third sensors SS1 , SS2 , and SS3 . The fire detector 100 determines only smoke, and thus the possibility of determining a non-fire alarm as a fire may be reduced. Accordingly, it is possible to provide the fire detector 100 with improved reliability.

Although three sensors are exemplarily illustrated in FIG. 2 , the number of sensors included in the fire detector according to an embodiment of the present invention is not limited thereto.

The address information may be stored in the sensing memory unit MM. An optimal signal transmission path for quickly transmitting the fire detection signal SG-1 to the repeater 200 may be stored in the sensing memory unit MM.

The sensing memory unit MM may include volatile memory or non-volatile memory. The volatile memory may include DRAM, SRAM, flash memory, or FeRAM. The non-volatile memory may include SSD or HDD.

The sensing communication unit ATN may transmit a fire detection signal SG-1 to the repeater 200. The sensing communication unit ATN may also transmit the fire detection signal SG-1 to other adjacent fire detectors 100 . The fire detection signal SG-1 may include the fire information and the address information generated by the first sensor SS1.

When receiving a fire occurrence signal from the determination unit JD, the sensing communication unit ATN may transmit the first signal SG-1a to at least one of the plurality of adjacent fire detectors 100 . The sensing communication unit ATN may transmit the second signal SG-1b to the repeater 200 when receiving the fire occurrence signal from the determination unit JD.

When the fire detector 100 and the repeater 200 are far apart from each other and it is difficult for the repeater 200 to directly receive the fire detection signal SG-1, the sensing communication unit ATN transmits a fire alarm to another adjacent fire detector 100. Signal transmission to the repeater 200 may be stably performed by transmitting the detection signal SG-1. The sensing communication unit ATN may receive the fire detection signal SG-1 from another adjacent fire detector 100.

The amplification unit AMP may amplify the fire detection signal SG-1. The sensing communication unit ATN may receive a fire detection signal SG-1 from another fire detector 100. The transmission rate and/or accuracy of the received fire detection signal SG-1 may be degraded due to transmission distance and noise in the process of being transmitted from other adjacent fire detectors 100. The amplification unit AMP may amplify the fire detection signal SG-1 having a degraded quality. Accordingly, transmission rate and/or accuracy of the fire detection signal SG-1 may be improved. The sensing communication unit ATN may transmit the amplified fire detection signal SG-1 to the repeater 200. The sensing communication unit ATN may transmit the amplified fire detection signal SG-1 to at least one of the plurality of adjacent fire detectors 100. The amplified fire detection signal SG-1 may increase accuracy, transmission rate, and transmission distance of a signal transmitted between the plurality of fire detectors 100 and the repeater 200.

The battery unit TT1 may supply power to the first sensor SS1 , the sensing memory unit MM, the sensing communication unit ATN, the amplifier unit AMP, the control unit CC, and the determination unit JD.

A sensing communication unit (ATN) according to an embodiment of the present invention may use an RF communication method. The RF communication method may consume less power. Power consumption of the fire detector 100 can be minimized. The fire detector 100 can be driven with low power. Accordingly, the battery unit TT1 includes the first sensor SS1, the second sensor SS2, the third sensor SS3, the sensing memory unit MM, the sensing communication unit ATN, the amplifier unit AMP, and the control unit ( CC), and the determination unit (JD) can be stably supplied with power for a long time.

In addition, according to the present invention, the plurality of fire detectors 100 operate in a power saving mode that consumes little power and a normal mode that operates in a fire situation to reduce power consumption of each of the plurality of fire detectors 100. can be minimized. Therefore, each of the plurality of fire detectors 100 can be driven with low power.

The controller CC may generate first data based on the smoke measured by the first sensor SS1. The controller CC may generate second data based on the carbon monoxide measured by the second sensor SS2. The controller CC may generate third data based on the volatile organic compounds measured by the third sensor SS3.

The sensing memory unit MM may store data generated by the control unit CC. For example, the sensing memory unit MM may store first data, second data, and third data.

The determination unit JD may operate in a detection mode when the first sensor SS1 detects smoke and the second sensor SS2 detects the first substance (S310).

When smoke and the first substance are not sensed, the determination unit JD may determine whether the third sensor SS3 senses the second substance (S400).

When operating in the detection mode, the determination unit JD may generate fire information based on the concentration of the first material and/or the second material (S500).

In the detection mode, the determination unit JD may generate fire information when the concentration of the first material exceeds a predetermined first detection sensitivity. Alternatively, the determination unit JD may generate fire information when the concentration of the first material increases compared to the previous one in the detection mode.

In the sensing mode, the determination unit JD may generate fire information when the concentration of the second material exceeds a predetermined second sensing sensitivity. Also, the determination unit JD may generate fire information when the concentration of the second material increases compared to the previous one in the sensing mode.

The fire information generated by the determination unit JD may include first data, second data, and third data generated by the control unit CC.

When the third sensor SS3 does not detect the second substance, the determination unit JD may determine that it is a non-fire alarm (S320).

According to the present invention, the fire detector 100 may detect a fire by combining data collected by each of the plurality of sensors SS1 , SS2 , and SS3 . The determination unit JD operates in the sensing mode when the first sensor SS1 detects smoke, the second sensor SS2 detects carbon monoxide, and/or the third sensor SS3 detects volatile organic compounds. can In addition, the determination unit JD may determine the non-fire alarm by combining detection contents of each of the first to third sensors SS1 , SS2 , and SS3 . The fire detector 100 may reduce the possibility of determining a non-fire alarm as a fire. Accordingly, it is possible to provide the fire detector 100 with improved reliability.

4 is a view showing the internal structure of the first sensor according to an embodiment of the present invention, and FIG. 5 is a view showing the operation of the first sensor when smoke is generated according to an embodiment of the present invention. .

Referring to FIGS. 4 and 5 , the first sensor SS1 may include a housing HS, a light emitting element LE, a light receiving element LR, and a light blocking plate SLP.

A transmission part TP may be defined in the housing HS. The smoke SK may flow into the first sensor SS1 through the transmission part TP. Although FIG. 4 exemplarily illustrates the transmission part TP provided along the side surface of the housing HS, the location where the transmission part TP is provided is not limited thereto. Each of the position where the transmission part TP is provided and the shape of the transmission part TP can be transformed into various positions or shapes if the smoke SK can be introduced.

The light emitting element LE, the light receiving element LR, and the light blocking plate SLP may be disposed inside the housing HS. The inside of the housing HS may be a dark room. That is, smoke SK may be introduced through the transmission part TP, but external light may not be introduced. Accordingly, a light blocking portion LBP may be disposed at a portion facing the transmission portion TP to block light introduced from the transmission portion TP.

The light emitting element LE is disposed within the housing HS and may emit infrared light IR in a predetermined direction. For example, the predetermined direction may be a direction parallel to the second direction DR2 . The light emitting element LE may emit infrared light IR in a turned-on state, and may not emit infrared light IR in a turned-off state.

The light receiving element LR is disposed within the housing HS and may not face the light emitting element LE. That is, the light receiving element LR may not be disposed in a direction in which the light emitting element LE emits light. The light receiving element LR may be spaced apart from the light emitting element LE in a direction crossing the predetermined direction. That is, the light receiving element LR may not be disposed along the second direction DR2 with respect to the light emitting element LE. The light receiving element LR may indirectly receive the infrared light IR emitted from the light emitting element LE. For example, the light receiving element LR may receive light emitted from the light emitting element LE and scattered, refracted, or reflected by the smoke SK.

The light blocking plate SLP is disposed between the light emitting element LE and the light receiving element LR to prevent infrared light IR emitted from the light emitting element LE from being directly provided to the light receiving element LR. In one embodiment of the present invention, the light blocking plate (SLP) may be omitted.

The control unit CC (refer to FIG. 2 ) may convert the amount of light received by the light receiving element LR into data. The controller (CC, see FIG. 2 ) may generate first data based on the smoke measured by the first sensor SS1 .

When the smoke SK is generated, the smoke SK may flow into the first sensor SS1 through the transmission part TP.

When the light emitting element LE emits the infrared light IR, a part of the infrared light IR may be scattered or refracted by the smoke SK. The amount of scattered or refracted light may vary depending on the amount of smoke SK. For example, if there is very little smoke SK, only a small part of the infrared light IR can be scattered or refracted, and the more smoke SK, more of the infrared light IR can be scattered or refracted. there is.

The light receiving element LR may receive the scattered or refracted infrared light IR. The amount of infrared light IR that is scattered or refracted may vary according to the amount of smoke SK, and as a result, the amount of light received by the light receiving element LR may vary. That is, the greater the smoke SK, the greater the amount of light received by the light receiving element LR.

The control unit CC (refer to FIG. 2 ) may generate first data corresponding to the amount of light received by the light receiving element LR. The determination unit (JD, see FIG. 2) may generate fire information based on the first data.

Referring to FIGS. 1, 2, and 6 , a plurality of fire detectors 100 may be respectively disposed in a plurality of regions. The plurality of fire detectors 100 may include a first fire detector 100-1, a second fire detector 100-2, and a third fire detector 100-3.

The first fire detector 100-1 may be disposed in the first area AR1. The first area AR1 may be a place where the first material is unlikely to occur. For example, the first area AR1 may be a server room where the server SV is disposed.

The second fire detector 100-2 may be disposed in the second area AR2. The second area AR2 may be a place where the first material is likely to be generated. For example, the first material may be carbon monoxide, and the second area AR2 may be a kitchen. Kitchens are likely to generate carbon monoxide due to the use of gas stoves. For example, the possibility of generating the first material may be higher in the second area AR2 than in the first area AR1 even though it is not in a fire situation.

The third fire detector 100-3 may be disposed in the third area AR3. The third area AR3 may be a place where the first material is likely to be generated. For example, the first material may be carbon monoxide, and the third area AR3 may be a smoking room. There is a high possibility that carbon monoxide from cigarette smoke is generated in a smoking room. For example, the possibility of generating the first material may be higher in the third area AR3 than in the second area AR2 even though it is not in a fire situation.

The controller CC may differently set the first detection sensitivity of the second sensor SS2 according to the installed place. For example, the controller CC may set the first sensing sensitivity of the second sensor SS2 to different first, second, and third steps. For example, the first fire detector 100-1 may have a first detection sensitivity of a first stage. The second fire detector 100-2 may have a first detection sensitivity of a second level. The third fire detector 100-3 may have a first detection sensitivity of the third level.

The determination unit JD may generate fire information when the concentration of the first substance exceeds the first detection sensitivity in the detection mode in which the smoke and the first substance are detected. The sensing communication unit ATN may transmit fire information to the first server 400 . The first server 400 may transmit information on a fire situation to the plurality of users 20 based on the fire information.

The controller CC may differently set the second sensing sensitivity of the third sensor SS3 according to the installed place.

The determination unit JD may generate fire information when the concentration of the second material exceeds the second sensing sensitivity in the sensing mode. The sensing communication unit ATN may transmit fire information to the first server 400 . The first server 400 may transmit information on a fire situation to the plurality of users 20 based on the fire information.

Unlike the present invention, when cooking in a kitchen, carbon monoxide may be generated by a gas stove. At this time, the existing fire detector may determine that a fire has occurred based on smoke or carbon monoxide due to cooking even though no fire has occurred. However, according to the present invention, the second fire detector 100-2 may be installed in the second area AR2, which is the kitchen. The control unit CC of the second fire detector 100-2 may set the first detection sensitivity to the second level based on the second area AR2 in which the second fire detector 100-2 is installed. For example, the first detection sensitivity of the second fire detector 100-2 may be set to be less sensitive than the first detection sensitivity of the first fire detector 100-1. When a fire occurs, the first sensor SS1 of the second fire detector 100-2 can detect smoke, and the second sensor SS2 of the second fire detector 100-2 can detect carbon monoxide. there is. When the concentration of carbon monoxide exceeds the first detection sensitivity, fire information may be generated to notify users 20 of a fire. Even if the concentration of carbon monoxide is less than the first detection sensitivity, the third sensor SS3 may sense the second substance to generate fire information and notify users 20 of a fire. When no fire occurs, the second fire detector 100-2 does not react sensitively by the first detection sensitivity even if carbon monoxide is generated due to the gas range, so it can be determined as a non-fire alarm. Even though no fire has occurred to the users 20, false alarms that a fire has occurred can be prevented from being transmitted. Accordingly, it is possible to provide the fire alarm system 10 including the fire detector 100 having improved fire detection reliability.

Also, unlike the present invention, in the case of a smoking room, carbon monoxide may be generated by cigarette smoke. In this case, the conventional fire detector may determine that the cigarette smoke is a fire even though no fire has occurred. However, according to the present invention, the third fire detector 100-3 may be installed in the third area AR3, which is a smoking room. The control unit CC of the third fire detector 100-3 may set the first detection sensitivity to the third level based on the third area AR3 in which the third fire detector 100-3 is installed. For example, the first detection sensitivity of the third fire detector 100-3 may be set to be less sensitive than the first detection sensitivity of each of the first fire detector 100-1 and the second fire detector 100-2. can When a fire occurs, the first sensor SS1 of the third fire detector 100-3 detects smoke, and the second sensor SS2 of the third fire detector 100-3 detects carbon monoxide. there is. When the concentration of carbon monoxide exceeds the first detection sensitivity, fire information may be generated to notify users 20 of a fire. Even if the concentration of carbon monoxide is less than the first detection sensitivity, the third sensor SS3 may sense the second substance to generate fire information and notify users 20 of a fire. When a fire does not occur, the third fire detector 100-3 does not react sensitively by the first detection sensitivity even if carbon monoxide is generated due to cigarette smoke, so it can be determined as a non-fire alarm. Even though no fire has occurred to the users 20, false alarms that a fire has occurred can be prevented from being transmitted. Accordingly, it is possible to provide the fire alarm system 10 including the fire detector 100 having improved fire detection reliability.

Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art or those having ordinary knowledge in the art do not deviate from the spirit and technical scope of the present invention described in the claims to be described later. It will be understood that the present invention can be variously modified and changed within the scope not specified. Therefore, the technical scope of the present invention is not limited to the contents described in the detailed description of the specification, but should be defined by the claims.

In a fire detector, the function of determining a non-fire alarm can increase the reliability of fire detection. The present invention can provide a fire detector with improved reliability and a fire detector operating method. Therefore, the present invention related to the fire detector and the method for operating the fire detector has high industrial applicability.

Claims

A first sensor for detecting smoke;

a second sensor that senses the first material; and

Including a determination unit for generating fire information,

The determination unit operates in a sensing mode when the second sensor detects the first substance after the first sensor detects the smoke, and determines that it is a non-fire alarm when it does not detect the smoke,

The fire detector for generating fire information based on the concentration of the first material when the determination unit operates in the detection mode.
According to claim 1,

Wherein the determination unit generates the fire information when the concentration of the first material increases compared to the previous fire detector in the detection mode.
According to claim 1,

The first material is carbon monoxide fire detector.
According to claim 1,

The fire detector further includes a control unit configured to set the detection sensitivity of the second sensor to different first, second, and third stages according to the installation location.
According to claim 4,

Wherein the determination unit generates the fire information when the concentration of the first material exceeds the detection sensitivity.
According to claim 1,

The fire detector further comprises a third sensor for detecting a second material different from the first material.
According to claim 6,

Wherein the determination unit generates the fire information based on the concentration of the first material and the concentration of the second material in the detection mode.
According to claim 6,

The second material is a volatile organic compound (VOC) fire detector.
detecting smoke by a first sensor;

detecting, by a second sensor, a first substance after the smoke is sensed;

operating in a sensing mode when the first substance is detected, and determining a non-fire alarm when the first substance is not detected; and

and generating fire information based on the concentration of the first material in the sensing mode.
According to claim 9,

The generating of the fire information includes generating the fire information when the concentration of the first material increases compared to the previous one.
According to claim 9,

The method of operating a fire detector further comprising the step of sensing a second substance different from the first substance by a third sensor.
According to claim 11,

Generating the fire information,

Determining the concentration of the first material; and

The fire detector operating method further comprising generating the fire information based on the concentration of the second material.
According to claim 12,

The step of determining the concentration of the first material comprises determining whether the concentration of the first material exceeds a detection sensitivity.
According to claim 13,

The generating of the fire information based on the concentration of the second material is performed when the concentration of the first material exceeds the detection sensitivity.