KR102481796B1 - Fire Detection System and Method for Detecting Occupant when a Fire Occurs in a Building - Google Patents

Abstract

The present invention relates to a fire detection system and method for determining whether a person is occupied in the event of a fire in a building, and more particularly, when a fire is detected by a fire detector installed in a building area, fire information is transmitted to a disaster prevention receiver. The disaster prevention receiving panel commands the fire detectors in one or more zones affected by the fire to detect the presence of people, detects people located in the corresponding area through the radar sensor provided in the fire detector, and transmits them to the disaster prevention receiving panel. The receiving panel relates to a fire detection system and method for determining whether a person is occupied in the event of a fire in a building, which transmits the information to the fire department server and the user terminal of the fire brigade so that life can be quickly rescued in the event of a fire.

Description

Fire Detection System and Method for Detecting Occupant when a Fire Occurs in a Building}

The present invention relates to a fire detection system and method for determining whether a person is occupied in the event of a fire in a building, and more particularly, when a fire is detected by a fire detector installed in a building area, fire information is transmitted to a disaster prevention receiver. The disaster prevention receiving panel commands the fire detectors in one or more zones affected by the fire to detect the presence of people, detects people located in the corresponding area through the radar sensor provided in the fire detector, and transmits them to the disaster prevention receiving panel. The receiving panel relates to a fire detection system and method for determining whether a person is occupied in the event of a fire in a building, which transmits the information to the fire department server and the user terminal of the fire brigade so that life can be quickly rescued in the event of a fire.

In a general type of fire detection facility built in a building such as an apartment or a high-rise building, fire detectors that detect smoke or heat are installed at various locations inside the building, and each fire detector is connected to a reception panel located in the management office or disaster prevention room of the building. connected, and the receiving panel is connected to a plurality of alarm devices (entrance indicator, fire alarm, etc.) provided in the building.

Through this configuration, when a fire occurs in a building, the fire detector adjacent to the location where the fire occurred detects a temperature rise or smoke generation due to the fire, and when the temperature rises above a predetermined value or the amount of smoke increases, The fire detection information is transmitted to the receiving panel, and the receiving panel transmits a control signal so that a plurality of connected alarm devices operate according to the fire detection information, so that a fire alarm is finally sounded.

As such, the conventional fire detection equipment corresponds to a configuration focused only on enabling people to quickly evacuate from a fire scene by notifying the fact that a fire has occurred. Therefore, there is a problem in that preparations are not made for those who inevitably cannot escape the fire site due to toxic gas or the like after a fire has occurred.

In addition, this problem occurs when the firefighters who extinguish the fire enter the building in a state where it is not clear whether there are people in the building, which can lead to waste of manpower to extinguish the fire, and further Additional problems may arise that may lead to fatal accidents of firefighters.

Therefore, the development of a new concept fire detection system to improve the problems of conventional fire detection equipment is required.

The present invention relates to a fire detection system and method for determining whether a person is occupied in the event of a fire in a building, and more particularly, when a fire is detected by a fire detector installed in a building area, fire information is transmitted to a disaster prevention receiver. The disaster prevention receiving panel commands the fire detectors in one or more zones affected by the fire to detect the presence of people, detects people located in the corresponding area through the radar sensor provided in the fire detector, and transmits them to the disaster prevention receiving panel. The purpose of the receiving panel is to provide a fire detection system and method for determining whether a person is occupied in the event of a fire in a building, which transmits it to the fire department server and the user terminal of the fire brigade so that life can be quickly rescued in the event of a fire. to be

In order to solve the above problems, in one embodiment of the present invention, as a fire detection system for determining whether a person is occupied in the event of a fire in a building, the fire detection system is installed in each zone of the building, and a radar sensor One or more fire detectors including; and a disaster prevention receiving panel communicating with the one or more fire detectors, wherein the fire detector detects a fire and derives fire information when a fire occurs in the area where the fire detector is installed, and the fire information is detected. a fire detection step of transmitting to the disaster prevention receiver; After the fire information is received by the disaster prevention receiver, occupancy detection start information for controlling to determine whether or not a person is occupied is derived through a radar sensor included in the fire detector, and the fire detector that transmits the fire information a presence detection start step of transmitting presence detection start information; By the fire detector, based on the occupancy detection start information, detecting one or more people located in the corresponding area through a radar sensor included in the fire detector to derive occupancy information, and transmitting the occupancy information to the disaster prevention receiver occupancy detection step; And by the disaster prevention receiving panel, based on the occupancy information received through the occupancy detection step and the area information of the area where the fire occurred, the firefighting request information is derived, and the firefighting request information is transmitted to the fire service server and the user terminal of the firefighters. It provides a fire detection system that performs the; firefighting request step.

In one embodiment of the present invention, in the case of a fire in each zone of the building, the fire impact information for one or more other zones affected by the fire is previously stored in the disaster prevention reception panel, and the occupancy detection start step, It may be characterized in that the re-room start information is transmitted to a fire detector that has transmitted the fire information and one or more other fire detectors installed in one or more other zones affected by a fire occurring in the zone based on the fire effect information. there is.

In one embodiment of the present invention, the fire detector may include: a first housing attached to the ceiling of a building by maintaining a level within a predetermined angle; a second housing part fastened to the first housing part; a substrate part disposed in an inner space formed by the fastening of the first housing part and the second housing part; a fire detection unit electrically connected to the substrate unit; a connector part having one end electrically connected to the board part; the radar sensor disposed above the fire detection module and electrically connected to the other end of the connector part; and a pair of fixing parts fastened to the rear surface of the first housing part to fix the first housing part to the ceiling of a building.

In one embodiment of the present invention, the radar sensor includes a temperature sensor module, and the radar sensor determines a center frequency of a radar signal in proportion to a change in temperature based on temperature information detected by the temperature sensor module. A radar signal can be transmitted by increasing the magnitude of the voltage.

In one embodiment of the present invention, the radar sensor includes one or more radar transmission modules; and a plurality of radar receiving modules, wherein the radar transmitting module continuously transmits a radar signal whose frequency is modulated according to time, and each of the radar receiving modules is configured at predetermined intervals. Arranged, it is possible to receive the radar signal transmitted from the radar transmission module and reflected.

In one embodiment of the present invention in order to solve the above problems, as a method for determining whether a person is occupied in the event of a fire in a building performed by a fire detection system, the fire detection system is installed in each zone of the building and one or more fire detectors including a radar sensor; and a disaster prevention receiving panel communicating with the one or more fire detectors, wherein the fire detector detects a fire and derives fire information when a fire occurs in the area where the fire detector is installed, and the fire information is detected. a fire detection step of transmitting to the disaster prevention receiver; After the fire information is received by the disaster prevention receiver, occupancy detection start information for controlling to determine whether or not a person is occupied is derived through a radar sensor included in the fire detector, and the fire detector that transmits the fire information a presence detection start step of transmitting presence detection start information; By the fire detector, based on the occupancy detection start information, detecting one or more people located in the corresponding area through a radar sensor included in the fire detector to derive occupancy information, and transmitting the occupancy information to the disaster prevention receiver occupancy detection step; And by the disaster prevention receiving panel, based on the occupancy information received through the occupancy detection step and the area information of the area where the fire occurred, the firefighting request information is derived, and the firefighting request information is transmitted to the fire service server and the user terminal of the firefighters. It provides a method for determining whether a person is present in the event of a fire in a building, including a; firefighting request step.

According to an embodiment of the present invention, since the disaster prevention receiver controls the fire detector to detect people present in the installed area, it is effective in easily grasping information about people located in the area after a fire occurs. can

According to one embodiment of the present invention, the disaster prevention reception panel controls not only the fire detectors in the area where the fire occurred but also the fire detectors installed in one or more other areas affected by the fire to detect people, so that people are not affected by the fire in the building. It is possible to exert an effect of easily grasping information of people located in all zones.

According to one embodiment of the present invention, the fire detector includes a radar sensor, and the radar sensor transmits a radar signal having a predetermined frequency band and receives the reflected radar signal to detect information about people located in a corresponding area. Therefore, it is possible to exert an effect of detecting people by minimizing the effect of fire.

According to an embodiment of the present invention, the radar sensor includes a temperature sensor module to detect an increase in temperature due to a fire, and increases a voltage level for determining a center frequency according to the increase in temperature. Regardless of the rise of , it is possible to exert an effect of maintaining the center frequency of the transmitted radar signal constant.

According to an embodiment of the present invention, the radar transmission module included in the radar sensor continuously transmits a radar signal whose frequency is modulated according to time, and each of the plurality of radar reception modules further included in the radar sensor is configured at predetermined intervals. Since it is arranged and receives the reflected radar signal, it is possible to exhibit an effect of easily detecting a plurality of people.

According to an embodiment of the present invention, the disaster prevention reception unit derives firefighting request information based on area information and occupancy information and transmits it to the fire department server and user terminals of firefighters, so that lifesaving can be easily performed can be effective.

1 schematically illustrates detailed components of a fire detection system according to an embodiment of the present invention.
2 schematically illustrates the operation steps of a fire detection system according to an embodiment of the present invention.
3 schematically illustrates a process of transmitting occupancy detection start information from a disaster prevention reception panel to fire detectors installed in a plurality of zones according to fire effect information according to an embodiment of the present invention.
4 schematically illustrates an exploded view of a fire detector for detecting smoke according to an embodiment of the present invention.
5 schematically illustrates an exploded view of a fire detector for sensing temperature according to an embodiment of the present invention.
6 schematically illustrates a base portion fastened to a first housing portion according to an embodiment of the present invention.
7 schematically illustrates a process of detecting people by receiving a radar signal transmitted from one or more radar transmission modules of a radar sensor in a plurality of radar reception modules according to an embodiment of the present invention.
8 schematically illustrates a method for maintaining a constant center frequency of a radar signal that changes according to temperature in a radar sensor according to an embodiment of the present invention.

In the following, various embodiments and/or aspects are disclosed with reference now to the drawings. In the following description, for purposes of explanation, numerous specific details are set forth in order to facilitate a general understanding of one or more aspects. However, it will also be appreciated by those skilled in the art that such aspect(s) may be practiced without these specific details. The following description and accompanying drawings describe in detail certain illustrative aspects of one or more aspects. However, these aspects are exemplary and some of the various methods in principle of the various aspects may be used, and the described descriptions are intended to include all such aspects and their equivalents.

Moreover, various aspects and features will be presented by a system that may include a number of devices, components and/or modules, and the like. It should also be noted that various systems may include additional devices, components and/or modules, and/or may not include all of the devices, components, modules, etc. discussed in connection with the figures. It must be understood and recognized.

"Example", "example", "aspect", "exemplary", etc., used herein should not be construed as preferring or advantageous to any aspect or design being described over other aspects or designs. . The terms '~unit', 'component', 'module', 'system', 'interface', etc. used below generally mean a computer-related entity, and for example, hardware, hardware It may mean a combination of and software, software.

Also, the terms "comprises" and/or "comprising" mean that the feature and/or element is present, but excludes the presence or addition of one or more other features, elements and/or groups thereof. It should be understood that it does not.

In addition, terms including ordinal numbers, such as first and second, may be used to describe various components, but the components are not 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. The terms and/or include any combination of a plurality of related recited items or any of a plurality of related recited items.

In addition, in the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, are generally understood by those of ordinary skill in the art to which the present invention belongs. has the same meaning as Terms such as those 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 in the embodiments of the present invention, an ideal or excessively formal meaning not be interpreted as

1 schematically illustrates detailed components of a fire detection system according to an embodiment of the present invention.

As shown in FIG. 1 , the fire detection system includes a plurality of fire detectors 1000 and a disaster prevention receiver 2000 communicating with each of the fire detectors 1000 .

The plurality of fire detectors 1000 are disposed at various locations inside the building, detect whether a fire has occurred by sensing temperature or smoke, and transmit fire information to the disaster prevention receiver 2000. In addition, when the fire detector 1000 receives occupancy detection start information from the disaster prevention receiving panel 2000, the fire detector 1000 checks whether a person exists in the installed building area through the radar sensor 1600 included in the fire detector 1000. (room occupancy) is detected and transmitted to the disaster prevention receiver (2000) again.

Meanwhile, each of the plurality of fire detectors 1000 may be installed in each physically divided area inside the building, but a plurality of fire detectors 1000 may be installed in a single area in consideration of the area of the area, and the building The area of is also not limited to being physically separated and can be set arbitrarily, which can be determined by the entity that installs or operates the fire detection system.

As described above, the fire detector 1000, including the radar sensor 1600, transmits a radar signal to determine whether people exist in the installed area through the radar sensor 1600 and, if so, how many people exist, and reflects the radar signal. It can be detected by receiving the radar signal. As such, in the present invention, in consideration of the specificity of fire, by using the radar sensor 1600 instead of the passive infrared sensor (PIR sensor) used in normal occupancy sensors, in the case of the PIR sensor, due to the temperature rise and smoke generation caused by the fire It can improve the problem that it is difficult to detect people.

The disaster prevention receiving panel 2000 communicates with a plurality of fire detectors 1000 to control each of the plurality of fire detectors 1000, and detects a fire from the fire detector 1000 and receives fire information transmitted when the room is occupied. The detection start information is derived, and the occupancy detection start information is transmitted to the fire detector 1000 that has transmitted the fire information and one or more fire detectors 1000 installed in other areas affected by the fire. Through this configuration, the radar sensor 1600 is not operated indiscriminately, but the radar sensor 1600 is selectively operated only when a fire occurs to efficiently perform occupancy detection.

In addition, when the disaster prevention receiver 2000 receives occupancy information detected through the radar sensor 1600 of the fire detector 1000, the zone information on the zone where the fire occurred or the zone affected by the fire and the fire detector of the zone By transmitting the occupancy information transmitted from (1000) to the fire service server (3000), which is a public institution that extinguishes fires, and the user terminal (4000) of firefighters dispatched to extinguish a fire, how many people are in a certain area in a building It can provide information on whether it exists, so that lifesaving can be done quickly, and it can exert the effect of reducing the loss of life of firefighters due to unconditional entry into the building.

2 schematically illustrates the operation steps of a fire detection system according to an embodiment of the present invention.

As shown in FIG. 2, as a fire detection system for determining whether a person is occupied in the event of a fire in a building, the fire detection system is installed in each zone of the building and includes at least one radar sensor 1600. fire detector (1000); and a disaster prevention receiver 2000 communicating with the one or more fire detectors 1000, and when a fire occurs in the area where the fire detector 1000 is installed by the fire detector 1000, a fire A fire detection step (S10) of deriving fire information by detecting and transmitting the fire information to the disaster prevention receiver (2000); After the fire information is received by the disaster prevention receiver 2000, occupancy detection start information for controlling to determine whether a person is occupied is derived through the radar sensor 1600 included in the fire detector 1000, an occupancy detection start step (S11) of transmitting the occupancy detection start information to the fire detector 1000 that has transmitted the fire information; The fire detector 1000 derives occupancy information by detecting one or more people located in the corresponding area through the radar sensor 1600 included in the fire detector 1000 based on the occupancy detection start information, occupancy detection step (S12) of transmitting occupancy information to the disaster prevention receiver (2000); And by the disaster prevention receiving unit 2000, firefighting request information is derived based on the occupancy information received through the occupancy detection step (S12) and the area information of the area where the fire occurred, and the fire department server 3000 and the fire brigade A firefighting request step (S13) of transmitting the firefighting request information to the user terminal 4000; can be performed.

Specifically, when a fire occurs in a specific area, the fire detector 1000 installed in the specific area detects the fire by detecting a temperature increase or smoke generation due to the fire, and derives fire information when a fire is detected to detect the fire A fire detection step (S10) of transmitting information to the disaster prevention receiver (2000) is performed.

In another embodiment of the present invention, in the fire detection step (S10), the fire detector 1000 does not derive separate fire information, but sends temperature information or information about the amount of smoke in the area to the disaster prevention receiver 2000. , and based on the temperature information or information on the amount of smoke received by the disaster prevention receiver 2000, it is possible to determine the occurrence of a fire in the corresponding area.

On the other hand, the disaster prevention receiver 2000 receiving the fire information derives occupancy detection start information for controlling the fire detector 1000 that has transmitted the fire information to detect one or more people present in the corresponding area, and the occupancy detection An occupancy detection start step (S11) of transmitting start information to the fire detector 1000 that has transmitted the fire information is performed.

Preferably, in the occupancy detection start step (S11), occupancy detection start information is transmitted not only to the fire detector 1000 that has transmitted the fire information, but also to one or more fire detectors 1000 installed in one or more other zones affected by the fire. Therefore, it is possible to exert an effect of easily determining whether a person exists in a plurality of areas within a building affected by a fire.

In another embodiment of the present invention, the disaster prevention receiver 2000 performing the occupancy monitoring start step may control one or more fire alarm devices connected to the disaster prevention receiver 2000 to operate based on the fire information.

Subsequently, the fire detector 1000 that has received the occupancy detection start information through the occupancy detection start step (S11) performs the occupancy detection step (S12) to use the radar sensor 1600 included in the fire detector 1000. Then, occupancy information for one or more people located in the corresponding area is derived. The radar sensor 1600 transmits a radar signal having a predetermined frequency band to a corresponding area, receives a radar signal reflected by a person or object located in the corresponding area, and based on the transmitted radar signal and the received radar signal occupancy information is derived, and this will be described in detail with reference to FIGS. 7 and 8 .

The occupancy information may include information about the presence or absence of people in the corresponding area, the number of people, and the like. Meanwhile, the fire detector 1000 transmits the derived occupancy information to the disaster prevention receiver 2000.

Upon receiving occupancy information from the fire detector 1000 through the occupancy detection step (S12), the disaster prevention receiver 2000 performs a firefighting request step (S13) to determine the occupancy information and the area where the fire detector 1000 is installed. Firefighting request information is derived based on the zone information, and more specifically, the zone information may include location information of the corresponding zone in the building, so the firefighting request information is the location of the zone and how many people are in the zone. It may contain information about whether it exists.

On the other hand, in the firefighting request step (S13), by delivering the derived firefighting request information to a public institution or firefighters who extinguish the fire, lifesaving in the building can be performed smoothly. More specifically, in the firefighting request step (S13), firefighting request information may be provided to the firefighting agency server 3000 and the user terminal 4000 of the firefighters.

As such, in the present invention, when a fire occurs in a building, occupancy information for one or more people located in the corresponding area is derived, and based on this, firefighting request information is derived and provided to the subject who extinguishes the fire, In addition to notifying people of the fire, lifesaving can be easily performed.

3 schematically illustrates a process of transmitting occupancy detection start information from a disaster prevention receiver 2000 to fire detectors 1000 installed in a plurality of zones according to fire effect information according to an embodiment of the present invention.

As shown in FIG. 3, in the case of a fire in each zone of a building, the fire impact information for one or more other zones affected by the fire is previously stored in the disaster prevention receiver 2000, and the occupancy detection starts. In step S11, the fire detector 1000 transmitting the fire information and one or more other fire detectors 1000 installed in one or more other zones affected by the fire occurring in the zone based on the fire influence information It may be characterized in that the re-realization start information is transmitted.

Specifically, the disaster prevention receiver 2000 performing the occupancy detection start step (S11) includes not only the fire detector 1000 in the area where the fire occurred, but also one or more fire detectors 1000 in one or more other areas affected by the fire, further Preferably, occupancy detection start information is transmitted to one or more fire detectors 1000 that are areas affected by fire and have not yet transmitted fire information to the disaster prevention receiver 2000.

To this end, fire impact information may be pre-stored in the disaster prevention receiver 2000 as shown in (A) of FIG. 3 . The fire impact information shown in (A) of FIG. 3 may correspond to pre-stored fire impact information when the building is an apartment. In the fire effect information, the location of the installed fire detector 1000 may be stored, and when a fire occurs in a specific area, one or more fire detectors (1000) installed in one or more other areas in addition to the fire detector 1000 installed in the specific area ) may additionally store rules for transmitting occupancy detection start information. For example, when a fire breaks out in a specific area of a specific household, the fire detectors 1000 installed in other areas of the specific household, the next generation of the specific household, the lower household, and the multiple fire detectors 1000 installed in the upper household. It can be set to transmit occupancy detection start information.

More specifically, FIG. 3 (B) shows a configuration in which a fire occurs in a specific household, the disaster prevention receiver 2000 receives fire information, and accordingly, occupancy detection start information is transmitted to a plurality of fire detectors 1000. .

As shown in (B) of FIG. 3, when a fire occurs in a specific area of building 101 1003, for example, a kitchen, the fire detector 1000 installed in the kitchen detects the fire and transmits fire information to the disaster prevention receiving panel 2000. ) is sent to

On the other hand, the disaster prevention receiver (2000) receiving fire information from the fire detector (1000) installed in the kitchen of Building 101, Room 1003 is located in the kitchen of Building 101, Room 1003 based on the pre-stored fire effect information as described in FIG. Occupancy detection start information for controlling to detect one or more people is transmitted to the installed fire detector 1000 and one or more fire detectors 1000 in one or more other zones affected by the fire.

More specifically, the disaster prevention receiver 2000 is located in all areas including the kitchen in building 101 1003, as shown in (A) of FIG. 3, the fire detectors 1000 installed in the living room, bedroom, and balcony, respectively. Send detection start information.

In addition, the occupancy detection start information is transmitted to one or more fire detectors (1000) installed in building 101, 1004, corresponding to the household next to building 101, 1003, and one or more fire detectors installed in building 101, 1103, corresponding to the upper household ( 1000) and the occupancy detection start information are also transmitted to one or more fire detectors 1000 installed in Building 101, Room 903 corresponding to the household below.

Therefore, the disaster prevention receiver 2000 transmits the occupancy detection start information to the fire detector 1000 installed in other areas affected by the fire in addition to the area where the fire occurred, thereby detecting occupancy information of people in various areas that may be damaged by fire. can figure it out

Meanwhile, the fire impact information described in FIG. 3 is only an example, and various settings for other zones affected by fire can be configured in consideration of the type and structure of a building.

Also, in another embodiment of the present invention, the fire impact information may vary according to time. Specifically, after a predetermined time has elapsed based on the time of receiving the fire information received from the fire detector, the range of fire detectors in other areas receiving occupancy detection start information may be widened. For example, when a fire occurs in a specific household of an apartment, the fire detectors of the upper, lower, left, and right households of the specific household are initially included in the fire effect information, and after a predetermined time has elapsed, the fire detector including the specific household Fire detectors for all units of a building may be included in the fire impact information.

4 schematically shows an exploded view of a fire detector 1000 for detecting smoke according to an embodiment of the present invention.

As shown in FIG. 4, the fire detector 1000 includes a first housing part 1100 attached to the ceiling of a building horizontally within a predetermined angle; a second housing part 1200 fastened to the first housing part 1100; a substrate part 1300 disposed in an inner space formed by fastening the first housing part 1100 and the second housing part 1200; A fire detection unit 1400 electrically connected to the board unit 1300; a connector part 1500 having one end electrically connected to the board part 1300; The radar sensor 1600 disposed above the fire detection module and electrically connected to the other end of the connector part 1500; and a pair of fixing parts 1710 and 1720 fastened to the rear surface of the first housing part 1100 to fix the first housing part 1100 to the ceiling of a building.

Specifically, the fire detector 1000 performs fire detection, occupancy detection, and communication with the disaster prevention receiver 2000 in an internal space formed by mutually fastening the first housing unit 1100 and the second housing unit 1200. Components for doing so may be arranged. To this end, as shown in FIG. 4 , a plurality of fastening protrusions are formed on the edge of the second housing part 1200, and a plurality of first fastening parts mutually fastened with the plurality of fastening protrusions are formed on the first housing part 1100. Grooves are formed so that the first housing part 1100 and the second housing part 1200 can be fastened to each other.

Meanwhile, a pair of fixing grooves are formed on the rear surface of the first housing part 1100 to allow the pair of fixing parts 1710 and 1720 to be fastened, and the pair of fixing parts 1710 and 1720 Each is fastened to the fixing groove so that the fire detector 1000 can be fixed to the ceiling of the zone.

Meanwhile, the base part 1900 is fastened to the rear surface of the first housing part 1100 so that the fire detector 1000 can be fixed horizontally to the ceiling within a predetermined angle, which will be described later in FIG. 6. let it do

In addition, when the fire detector 1000 detects smoke, a plurality of smoke inflows are provided on the front surface of the second housing unit 1200 to facilitate detection of the amount of smoke by the fire detector 1400. A ball is formed so that smoke can flow into the fire detector 1000 through the smoke inlet hole so that the fire detector 1400 can easily detect the amount of smoke generated by the fire.

In another embodiment of the present invention, when the fire detector 1000 corresponds to an analog detector, the exposed surface 1800 formed on the first housing part 1100 is electrically connected to the substrate part so that the fire detector 1000 An address allocation unit (not shown) capable of assigning an identifier (address) of ) may be exposed on the rear surface of the first housing unit 1100 . The address allocation unit (not shown) may be implemented in a deep switch method, and assigns a unique address to the corresponding fire detector 1000 by turning on/off each of a plurality of toggle switches included in the deep switch. Alternatively, the address allocation unit (not shown) may be implemented in the form of a terminal capable of performing communication, and may remotely allocate a unique address of the corresponding fire detector 1000. Through this, since the fire information transmitted from the fire detector 1000 includes the address information of the corresponding fire detector 1000, the disaster prevention receiver 2000 can easily determine from which fire detector 1000 the fire information was transmitted. there is.

Meanwhile, a substrate unit 1300 may be disposed in an inner space formed by fastening the first housing unit 1100 and the second housing unit 1200 to each other. The substrate 1300 may be electrically connected to the fire detection unit 1400 and connected to one end of the connector 1500 electrically connecting the radar sensor 1600 and the substrate 1300. In addition, a communication unit that performs communication with the disaster prevention receiver 2000 in a wireless or wired communication method may be electrically connected to the board unit 1300, and additionally, the fire detection unit 1400 and the radar sensor 1600 , and a control unit for controlling the communication unit may be electrically connected. In addition, as shown in FIG. 4 , a fastening hole physically coupled to the fire detection unit 1400 is formed in the center of the substrate unit 1300, so that the fire detection unit 1400 is connected to the substrate unit 1300. so that it can be mounted on

The fire detection unit 1400 may derive fire information by detecting an increase in temperature or an amount of smoke due to the occurrence of a fire. The fire detection unit 1400 included in the fire detector 1000 shown in FIG. 4 may correspond to a fire detection unit 1400 that detects the amount of smoke caused by a fire.

The fire detection unit 1400 shown in FIG. 4 may utilize various conventional smoke detection methods to detect the amount of smoke. For example, the fire detection unit 1400 may detect the amount of smoke by detecting a degree to which a current generated by ionized air between charging electrodes decreases as smoke is generated using an ionization detection method. In addition, the fire detection unit 1400 may use a photoelectric detection method. In this case, the fire detection unit 1400 includes a light emitting element emitting light and a photoelectric element converting light into current, , When smoke is generated, the light emitted from the light emitting device is scattered by the smoke, and the photoelectric device receives the reduced light due to the scattering and derives a changed current value, thereby detecting the amount of smoke.

Meanwhile, a plurality of second fastening grooves into which the radar sensor 1600 can be fastened are formed on the front of the fire detection unit 1400, and the radar sensor 1600 is fastened to the front of the fire detection unit 1400. make it possible

The radar sensor 1600 is fastened by a plurality of second fastening grooves formed in the fire detection unit 1400, and one end is electrically connected to the other end of the connector unit 1500 electrically connected to the board unit 1300. As a result, it can be electrically connected to the substrate part 1300 .

The radar sensor 1600 performs occupancy detection according to the occupancy detection start information transmitted from the disaster prevention receiver 2000. More specifically, the radar sensor 1600 may transmit a radar signal, receive a radar signal reflected by a person, and derive occupancy information according to the Doppler effect. To this end, the radar sensor 1600 may include a radar transmission module 1610 and a radar reception module 1620, which will be described in detail with reference to FIGS. 7 and 8.

In this way, since the radar sensor 1600 detects one or more people in the zone using the Doppler effect, the PIR (Passive Infrared Sensor) sensor, which is a method of detecting far-infrared rays generally generated from the human body, responds to the temperature rise due to fire. It can solve the problem that it is difficult to detect far-infrared rays generated from the human body.

Meanwhile, the communication unit transmits the fire information derived from the fire detector 1000 to the disaster prevention receiver 2000, receives occupancy detection start information transmitted from the disaster prevention receiver 2000, and The derived occupancy information may be transmitted to the disaster prevention receiving board 2000 again.

A plurality of fire detectors 1000 and disaster prevention receivers 2000 installed in each zone of a building may be connected in various wiring forms, but in another embodiment of the present invention, the disaster prevention receivers 2000 may correspond to R-type receivers, , Each fire detector 1000 may be connected in the form of a wire connected to an R-type receiver. Meanwhile, the fire detection system may further include one or more relay boards, and the one or more relay boards relay a plurality of fire detectors 1000 and disaster prevention receivers 2000 so that communication can be made.

5 schematically illustrates an exploded view of a fire detector 1000 for sensing temperature according to an embodiment of the present invention.

In FIG. 5 , the fire detection unit 1400 detects a change in temperature, which is different from the detection of the amount of smoke by the fire detection unit 1400 included in the fire detector 1000 described in FIG. 4 .

Specifically, the second housing 1200 of the fire detector 1000 shown in FIG. 5, unlike that shown in FIG. 4, detects a change in temperature in the fire detector 1400, so a plurality of smoke inlet holes are not formed. may be

On the other hand, the fire detection unit 1400 shown in FIG. 5 is for detecting temperature, and generally various methods capable of detecting temperature may be used. For example, the fire detection unit 1400 shown in FIG. 5 uses a temperature sensor that converts temperature information of a corresponding area into digital information (Analog-to-Digital Converter, ADC) to convert digitized temperature information to the disaster prevention It can be transmitted to the receiving board (2000).

As shown in FIG. 5, in the case of the fire detector 1400 that detects the temperature, the structure is not complicated and does not occupy a large volume, so the substrate part included in the fire detector 1000 that detects the change in temperature A fastening hole may not be formed in the 1300, and similarly, since the fire detection unit 1400 has a small volume, the radar sensor 1600 can also be directly connected to the substrate unit 1300, so that the above-described connector unit 1500 may not be included in the fire detection unit 1400 that detects a change in temperature.

The fire detector 1000 for detecting the amount of smoke described in FIGS. 4 and 5 and the fire detector 1000 for detecting a change in temperature may be selectively installed according to the purpose of the zone in which the fire detector 1000 is installed. .

6 schematically shows a base part 1900 fastened to a first housing part according to an embodiment of the present invention.

The drawing schematically shown in FIG. 6(A) shows the base part 1900 fastened to the rear surface of the first housing part 1100 to be fixed to the ceiling of the corresponding area. The fire detector 1000 includes the base part 1900, and the base part 1900 includes a base spring 1910 shown in FIG. 6(B) and a base terminal shown in FIG. 6(C) 1920 is fastened, and by the base spring 1910 and the base terminal 1920, the base part 1900 can be fixed horizontally to the ceiling within a predetermined angle. Accordingly, the first housing part 1100 is fastened to the base part 1900 so that the fire detector 1000 can be fixed to the ceiling in a horizontal manner.

The base spring 1910 shown in (B) of FIG. 6 is fastened to the outer surface of the base part 1900 so that the base part 1900 can be fixed to the ceiling, and in (C) of FIG. 6 The illustrated base terminal 1920 is fastened to the inner surface of the base part 1900 so that the wires of the fire detector 1000 can be easily connected to other fire detectors or disaster prevention receivers 2000 through the ceiling.

7 schematically illustrates a process of detecting people by receiving radar signals transmitted from at least one radar transmission module 1610 of a radar sensor 1600 in a plurality of radar reception modules 1620 according to an embodiment of the present invention. show

The diagram shown in (A) of FIG. 7 shows the radar signal Tx transmitted from the radar transmission module 1610 and the radar signal Rx received from the radar signal Tx reflected from the radar reception module 1620. Corresponds to a diagram schematically showing a relationship with frequency over time.

As shown in (A) of FIG. 7, the radar sensor 1600 includes one or more radar transmission modules 1610; and a plurality of radar receiving modules 1620, wherein the radar transmitting module 1610 continuously transmits a radar signal whose frequency is modulated according to time, and the plurality of radar receiving modules 1620, respectively The radar receiving modules 1620 of are arranged at predetermined intervals to receive radar signals transmitted from the radar transmitting module 1610 and reflected.

Specifically, the radar sensor 1600 is a continuous wave radar (Continuous Wave Radar) that continuously transmits a certain frequency band without pause and receives a reflected signal in order to detect a moving object, that is, a person trying to evacuate a fire in the event of a fire. , CW Radar) method, preferably a frequency modulated continuous wave radar (frequency modulated continuous wave radar that continuously transmits a frequency-modulated signal without a pause to detect a plurality of people and measure the distance to the detected person) Frequency Modulated Continuous Wave Radar, FMCW Radar) method. The radar sensor 1600 may include a voltage controlled oscillator (VCO) to generate a frequency-modulated radar signal.

That is, as shown in (A) of FIG. 7, the radar transmission module 1610 included in the radar sensor 1600 generates a radar signal (Tx) whose frequency is modulated according to time around the center frequency (f _c ). is continuously transmitted, the radar receiving module 1620 receives the reflected radar signal (Rx), and the radar sensor 1600 transmits and receives the radar signal (Tx) and the received radar signal (Rx) at the same point, respectively. Based on the distance (time difference) in the direction of the horizontal axis in , distance information with a person to whom the radar signal is reflected can be derived, and the transmitted radar signal (Tx) and the received radar signal (Rx) are located at the same point. Based on the distance (frequency difference) in the vertical axis direction, it is possible to derive motion information (whether moving away or approaching) of a person from which the radar signal is reflected.

Meanwhile, as shown in (B) of FIG. 7, the radar sensor 1600 includes a plurality of radar receiving modules 1621 to 1624, and the plurality of radar receiving modules 1621 to 1624 are spaced at predetermined intervals. can be placed side by side. Through this arrangement, each of the plurality of radar receiving modules 1621 to 1624 can receive reflected radar signals at different locations, and through this, the radar sensor 1600 can more accurately obtain distance information and motion information from a person. In addition, the radar sensor 1600 can simultaneously detect a plurality of people by including the plurality of radar receiving modules 1620.

In another embodiment of the present invention, the radar sensor 1600 is configured to include a plurality of radar transmission modules 1610 so that the radar sensor 1600 can more easily detect a plurality of people existing in a corresponding area at the same time. may be

The radar sensor 1600 is preferably a radar signal generated by a voltage controlled oscillator and received by a radar receiving module 1620 in order to derive distance information and motion information with a detected person according to transmission and reception of radar signals. An amplifier that amplifies one radar signal, a demodulator that demodulates the radar signal received from the radar receiving module 1620 amplified by the amplifier and the radar signal generated from the voltage controlled oscillator into an intermediate frequency (IF) band, It may further include an amplifier for amplifying the intermediate frequency band and a signal processor for deriving motion information and distance information based on the amplified intermediate frequency band.

In this way, the occupancy information derived from the radar sensor 1600 may include occupancy information for one or more detected persons and distance information and motion information for each detected person, and in another embodiment of the present invention, occupancy information may further include speed information for each person based on the derived distance information.

8 schematically illustrates a method for maintaining a constant center frequency of a radar signal that changes according to temperature in a radar sensor 1600 according to an embodiment of the present invention.

As shown in FIG. 8 , the radar sensor 1600 includes a temperature sensor module, and the radar sensor 1600 generates a radar signal in proportion to a change in temperature based on temperature information detected by the temperature sensor module. A radar signal can be transmitted by increasing the magnitude of the voltage that determines the center frequency of .

Specifically, as described in FIG. 7, the radar sensor 1600 transmits a radar signal whose frequency band is modulated based on a center frequency through a voltage controlled oscillator, and the voltage controlled oscillator is dependent on the magnitude of the input voltage. It is possible to increase the center frequency of the radar signal transmitted proportionally. On the other hand, the radar sensor 1600 is generally more robust to temperature rise due to fire than PIR sensors that detect people, but as shown in FIG. 8(A), as the temperature rises, the voltage controlled oscillator Since the center frequency of the generated radar signal decreases, the center frequency of the radar signal must be kept constant in order to accurately detect a person. Therefore, it is preferable that the input voltage according to the temperature rise is compensated.

On the other hand, (B) of FIG. 8 schematically shows the transition of the input voltage that changes according to the temperature in order to maintain the center frequency of 24 GHz. As shown in (B) of FIG. 8, it can be confirmed that the magnitude of the input voltage increases in order to keep the center frequency constant as the temperature rises.

Therefore, the radar sensor 1600 includes a temperature sensor module, and the temperature sensor module measures the temperature of the radar sensor 1600 to generate a radar signal having a constant center frequency regardless of the temperature in the radar sensor 1600. to be able to send out.

That is, the radar sensor 1600 may determine the input voltage (V _in ) input to the voltage controlled oscillator based on the following [Equation 1].

[Equation 1]

In this way, since the radar sensor 1600 operates to compensate the input voltage according to the temperature measured through the temperature sensor module, it is easy to derive occupancy information by preventing the center frequency from changing according to the temperature rise due to the occurrence of a fire. You can exert the effect you can do.

As described above, the algorithm for compensating the input voltage in the radar sensor 1600 may be configured in software, but preferably, the radar sensor 1600 compensates the input voltage in order to quickly compensate the input voltage in real time. It is possible to compensate the input voltage in hardware, including a compensation circuit that does.

According to an embodiment of the present invention, since the disaster prevention receiver controls the fire detector to detect people present in the installed area, it is effective in easily grasping information about people located in the area after a fire occurs. can

According to one embodiment of the present invention, the disaster prevention reception panel controls not only the fire detectors in the area where the fire occurred but also the fire detectors installed in one or more other areas affected by the fire to detect people, so that people are not affected by the fire in the building. It is possible to exert an effect of easily grasping information of people located in all zones.

According to one embodiment of the present invention, the fire detector includes a radar sensor, and the radar sensor transmits a radar signal having a predetermined frequency band and receives the reflected radar signal to detect information about people located in a corresponding area. Therefore, it is possible to exert an effect of detecting people by minimizing the effect of fire.

According to an embodiment of the present invention, the radar sensor includes a temperature sensor module to detect an increase in temperature due to a fire, and increases a voltage level for determining a center frequency according to the increase in temperature. Regardless of the rise of , it is possible to exert an effect of maintaining the center frequency of the transmitted radar signal constant.

According to an embodiment of the present invention, the radar transmission module included in the radar sensor continuously transmits a radar signal whose frequency is modulated according to time, and each of the plurality of radar reception modules further included in the radar sensor is configured at predetermined intervals. Since it is arranged and receives the reflected radar signal, it is possible to exhibit an effect of easily detecting a plurality of people.

According to an embodiment of the present invention, the disaster prevention reception unit derives firefighting request information based on area information and occupancy information and transmits it to the fire department server and user terminals of firefighters, so that lifesaving can be easily performed can be effective.

As described above, although the embodiments have been described with limited examples and drawings, those skilled in the art can make various modifications and variations from the above description. For example, the described techniques may be performed in an order different from the method described, and/or components of the described system, structure, device, circuit, etc. may be combined or combined in a different form than the method described, or other components may be used. Or even if it is replaced or substituted by equivalents, appropriate results can be achieved. Therefore, other implementations, other embodiments, and equivalents of the claims are within the scope of the following claims.

Claims (6)

As a fire detection system that determines whether a person is occupied in the event of a fire in a building,
The fire detection system,
One or more fire detectors installed in each area of the building and including a radar sensor; and
Including; a disaster prevention receiving panel that communicates with the one or more fire detectors,
By the fire detector,
a fire detection step of detecting a fire, deriving fire information, and transmitting the fire information to the disaster prevention receiving panel when a fire breaks out in the area where the fire detector is installed;
By the disaster prevention reception panel,
After receiving the fire information, the occupancy detection start information for controlling to determine whether a person is occupied is derived through a radar sensor included in the fire detector, and the occupancy detection start information is transmitted to the fire detector that transmitted the fire information. occupancy detection start step;
By the fire detector,
Occupancy detection step of deriving occupancy information by detecting one or more people located in a corresponding area through a radar sensor included in the fire detector based on the occupancy detection start information, and transmitting the occupancy information to the disaster prevention receiving panel; and
By the disaster prevention reception panel,
A firefighting request step of deriving firefighting request information based on the occupancy information received through the occupancy detection step and the area information of the area where the fire occurred, and transmitting the firefighting request information to the fire department server and the user terminal of the fire brigade; do,
In the case of a fire in each zone of the building, the disaster prevention receiver has pre-stored fire impact information for one or more other zones affected by the fire in the corresponding zone,
The occupancy detection start step,
Characterized in that the occupancy detection start information is transmitted to a fire detector that transmits the fire information and one or more other fire detectors installed in one or more other areas affected by a fire occurring in the area based on the fire effect information, ,
The radar sensor includes a temperature sensor module,
The radar sensor,
A fire detection system that transmits a radar signal by calculating the magnitude of the input voltage that determines the center frequency of the radar signal according to the temperature information detected by the temperature sensor module and the following [Equation 1].
[Equation 1]
V _in = K * t (V _in is the input voltage, t is the temperature of the radar sensor, K is the proportional constant)
delete The method of claim 1,
The fire detector,
A first housing attached to the ceiling of the building by maintaining a level within a predetermined angle;
a second housing part fastened to the first housing part;
a substrate part disposed in an inner space formed by the fastening of the first housing part and the second housing part;
a fire detection unit electrically connected to the substrate unit;
a connector part having one end electrically connected to the board part;
the radar sensor disposed above the fire detector and electrically connected to the other end of the connector; and
A fire detection system comprising: a pair of fixing parts fastened to a rear surface of the first housing part to fix the first housing part to a ceiling of a building.
delete The method of claim 1,
The radar sensor includes one or more radar transmission modules; and
A plurality of radar receiving modules; further comprising,
The radar transmission module,
The radar signal whose frequency is modulated according to time is continuously transmitted,
The plurality of radar receiving modules,
A fire detection system according to claim 1 , wherein each radar receiving module is disposed at a predetermined interval and receives a radar signal transmitted and reflected from the radar transmitting module.
As a method of determining whether a person is present in the event of a fire in a building performed by a fire detection system,
The fire detection system,
One or more fire detectors installed in each area of the building and including a radar sensor; and
Including; a disaster prevention receiving panel that communicates with the one or more fire detectors,
By the fire detector,
a fire detection step of detecting a fire, deriving fire information, and transmitting the fire information to the disaster prevention receiving panel when a fire breaks out in the area where the fire detector is installed;
By the disaster prevention reception panel,
After receiving the fire information, the occupancy detection start information for controlling to determine whether a person is occupied is derived through a radar sensor included in the fire detector, and the occupancy detection start information is transmitted to the fire detector that transmitted the fire information. occupancy detection start step;
By the fire detector,
Occupancy detection step of deriving occupancy information by detecting one or more people located in a corresponding area through a radar sensor included in the fire detector based on the occupancy detection start information, and transmitting the occupancy information to the disaster prevention receiving panel; and
By the disaster prevention reception panel,
A fire-fighting request step of deriving fire-fighting request information based on the occupancy information received through the occupancy detection step and the area information of the area where the fire occurred, and transmitting the fire-fighting request information to the fire service server and the user terminal of the fire brigade; do,
In the case of a fire in each zone of the building, the disaster prevention receiver has pre-stored fire impact information for one or more other zones affected by the fire in the corresponding zone,
The occupancy detection start step,
Characterized in that the occupancy detection start information is transmitted to a fire detector that transmits the fire information and one or more other fire detectors installed in one or more other areas affected by a fire occurring in the area based on the fire effect information, ,
The radar sensor includes a temperature sensor module,
The radar sensor,
The size of the input voltage that determines the center frequency of the radar signal is calculated according to the temperature information detected by the temperature sensor module and the following [Equation 1] to transmit the radar signal, to determine whether a person is occupied in the event of a fire in the building. How to judge.
[Equation 1]
V _in = K * t (V _in is the input voltage, t is the temperature of the radar sensor, K is the proportional constant)

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