KR102115742B1 - Disaster communication system using short-haul communication network - Google Patents

Abstract

According to an embodiment of the present invention, provided is a disaster communication system using a short-range communication network installed in a building, which derives whether a disaster has occurred, the expected evacuation personnel, and an evacuation route through an RF communication and piezoelectric sensor in a building, so as to maintain the communication network in accordance with the disaster and provide safe evacuation of people.

Description

Disaster communication system using short-range communication network installed in buildings {DISASTER COMMUNICATION SYSTEM USING SHORT-HAUL COMMUNICATION NETWORK}

The present invention relates to a disaster communication system using a short-range communication network installed in a building, and more particularly, to a disaster communication system using a short-range communication network installed in a building including an RF communication network.

Recently, large complex buildings with complex internal structures are being built. These complex buildings not only have multiple emergency evacuation routes and stairs on one floor, but also have a number of security facilities and idle spaces.

Accordingly, when an emergency such as a fire occurs in a multi-storey building, people visiting the building for the first time are very unfamiliar with the geography inside the building, so it is very difficult to find an exit through an emergency evacuation route.

In addition, even people who are resident in the building often fail to secure a view in an embarrassed state due to smoke and noise, and cannot quickly find an emergency evacuation route.

Registered Patent No. 10-1581766 (Announcement date: December 30, 2015)

The communication system for disasters using a short-range communication network installed in a building according to an embodiment of the present invention is for maintaining disaster communication within a building even if the wired / wireless communication system inside the building does not operate normally according to a disaster.

Disaster communication system using a short-range communication network installed in a building according to an embodiment of the present invention is to safely evacuate the evacuees on the building passage.

The subject of the present application is not limited to the subject mentioned above, and another subject not mentioned will be clearly understood by a person skilled in the art from the following description.

According to an aspect of the present invention, in the building, through the RF communication and piezoelectric sensor, whether a disaster occurs, the estimated evacuation personnel and evacuation routes are derived to maintain a communication network according to the disaster and to provide a safe evacuation of people. A disaster communication system using an installed short-range communication network is provided.

The communication system for disasters using a short-range communication network installed in a building according to an embodiment of the present invention uses a 400 MHz band RF signal that can penetrate smoke and concrete of a building when a disaster occurs in a building such as a fire. Even if the wired / wireless communication system inside the building does not operate normally, disaster communication within the building can be maintained.

Disaster communication system using a short-range communication network installed in a building according to an embodiment of the present invention can safely evacuate the evacuees on the building passage by deriving the expected evacuation personnel through the piezoelectric sensor.

The effects of the present application are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 shows a disaster communication system using a short-range communication network installed in a building according to an embodiment of the present invention.
2 shows a block diagram of the disaster detection sensing unit.
3 shows an example of the sensing signal of the piezoelectric sensor.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the accompanying drawings are only for explaining the contents of the present invention more easily, and the scope of the present invention is not limited to the scope of the attached drawings, and it is easily carried out by those skilled in the art. You will know.

Also, the terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

In this application, 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, one or more other features. It should be understood that the existence or addition possibilities of fields or numbers, steps, operations, components, parts or combinations thereof are not excluded in advance.

1 illustrates a disaster communication system using a short-range communication network installed in a building according to an embodiment of the present invention, and the short-range communication network installed in the building includes an RF communication network.

As shown in Figure 1, the communication system for disasters using a short-range communication network installed in a building according to an embodiment of the present invention is a disaster detection sensing unit 110, relay unit 130, evacuation route providing unit 150, evacuation It includes a route display unit 170 and an evacuation sensor sensing unit 190.

The disaster detection sensing unit 110 is installed in the building to sense whether a fire has occurred and transmits disaster information through the first RF communication module. As illustrated in FIG. 2, the disaster detection sensing unit 110 may include a heat sensing unit 111, a smoke sensing unit 115, and a vibration sensing unit 119 to sense whether a fire or earthquake has occurred. .

The heat sensing unit 111 and the smoke sensing unit 115 may sense the temperature and concentration of smoke in the building due to the fire. Also, the vibration sensing unit 119 may sense vibration of a building due to an earthquake.

The disaster detection sensing unit 110 may include, but is not limited to, a heat sensing unit 111, a smoke sensing unit 115, and a vibration sensing unit 119, and other disaster detection sensors (for example, Carbon monoxide detection sensor, etc.).

The plurality of evacuation sensing units 190 include a piezoelectric sensor 191 and a second RF communication module. The piezoelectric sensor 191 is provided on the floor of the passageway of the building and outputs a sensing signal when an evacuator in the passage steps on it. The second RF communication module transmits evacuator information according to the sensing signal of the piezoelectric sensor 191. The evacuation detection sensing unit 190 may kimchi the evacuators in the passageway of the building in the event of a disaster such as a fire or earthquake.

The disaster detection sensing unit 110 and the evacuation detection sensing unit 190 may packetize the disaster information and the evacuation information, and the packetized disaster information and the evacuation information may include the first RF communication module and the second. Each can be transmitted through the RF communication module.

The first RF communication module and the second RF communication module may modulate and transmit packetized disaster information and evacuation information into a 400 MHz band radio frequency signal, and demodulate the RF signal received from the outside.

The 400 MHz band may also be used in the relay unit 130, the evacuation route providing unit 150, and the evacuation route display unit 170, which will be described later. The relay unit 130, the evacuation route providing unit 150, and the evacuation route display unit 170 can also modulate and demodulate the RF signal for the packet data.

The disaster communication system using a short-range communication network installed in a building according to an embodiment of the present invention can communicate using an RF signal in a 400MHz band. This may prevent normal operation of the wired / wireless communication system inside the building in the event of a fire or earthquake, and the RF signal in the 400MHz band can penetrate smoke and concrete in the building, thus maintaining communication in the event of a fire.

For example, in the present invention, an RF signal in the 440 MHz to 447 MHz band that can smoothly penetrate concrete or smoke in buildings can be used.

Disaster information may include temperature information, smoke concentration information, and vibration information sensed by each of the heat sensing unit 111, the smoke sensing unit 115, and the vibration sensing unit 119. In addition, when the evacuator steps on the piezoelectric sensor in the passage, a signal according to the evacuator's weight is generated, and accordingly, the evacuation sensor sensing unit 190 may generate evacuator information.

In addition, the disaster information and the evacuation information, the identification number of the disaster detection sensing unit 110 and the evacuation detection sensing unit 190, whether the disaster detection sensing unit 110 and the evacuation detection sensing unit 190 operates normally, etc. It may include, but is not limited to.

The evacuation route providing unit 150 to be described later may match and store the identification numbers of the disaster detection sensing unit 110 and the evacuation detection sensing unit 190 and installation location information corresponding to the identification number. Accordingly, the evacuation route providing unit 150 may determine the location of the fire and the evacuation site by checking the identification numbers of the disaster sensing sensing unit 110 and the evacuation sensing sensing unit 190.

Alternatively, the disaster information and the evacuee information may include the installation location of the disaster detection sensing unit 110 and the evacuation detection sensing unit 190.

In a normal situation other than a disaster situation, the disaster detection sensing unit 110 and the evacuation detection sensing unit 190 communicate with the relay unit 130 through a network (for example, the Internet, an intranet, or a mobile communication network) or Bluetooth communication. Or NFC communication.

The relay unit 130 is installed in the building, and includes an RF relay communication unit that receives disaster information and evacuation information by communicating with the first RF communication module and the second RF communication module, and through the RF relay communication unit Relays pizza information.

The RF relay communication unit of the relay unit 130 demodulates the disaster information and the evacuator information transmitted from the disaster detection sensing unit 110 and the evacuation sensor sensing unit 190, and modulates them into an RF signal to transmit.

The relay unit 130 may transmit the disaster information and the evacuation information received from the disaster detection sensing unit 110 and the evacuation detection sensing unit 190 as it is, or may update the disaster information and the evacuation information to be transmitted. have. The updated information may be at least one of an identification number of the relay unit 130, a TCP / IP address of the relay unit 130, an installation location of the relay unit 130, and whether the relay unit 130 is operating normally, In addition, other information may be added.

As described above, the relay unit 130 may perform RF communication with the disaster detection sensing unit 110 and the evacuation sensor sensing unit 190. The RF signal in the 400 MHz band can easily penetrate smoke and concrete walls, but the transmission range, that is, communication coverage may be within about 100 meters.

In addition, the disaster sensing sensing unit 110 and the evacuation detection sensing unit 190 may be installed for each floor of the building, and may be installed in a number of areas on each floor, so the disaster sensing sensing unit 110 and the evacuation route providing unit The distance of 150 or the distance between the evacuation detection sensing unit 190 and the evacuation route providing unit 150 may be 100 meters or more.

The relay unit 130 is connected to the disaster information and evacuation information between the disaster detection sensing unit 110 and the evacuation route providing unit 150, and between the evacuation detection sensing unit 190 and the evacuation route providing unit 150. By relaying the corresponding RF signal, even if the distance between the disaster detection sensing unit 110 and the evacuation route providing unit 150 is more than a hundred meters, it is possible to maintain smooth communication through the RF signal.

As described above, since the relay unit 130 relays the RF signal between the disaster detection sensing unit 110, the evacuation sensor sensing unit 190, and the evacuation route providing unit 150, the disaster detection sensing unit 110 and the evacuation sensor are detected. The sensing unit 190 and the evacuation route providing unit 150 may be located within the communication coverage of the relay unit 130.

That is, the distance between the disaster detection sensing unit 110 and the relay unit 130 is 50 meters to 100 meters, and the distance between the evacuation detection sensing unit 190 and the relay unit 130 is 50 meters to 100 meters, and the relay unit ( 130), the distance between the evacuation route providing unit 150 may be 50 meters to 100 meters, and the distance between the relay unit 130 and the evacuation route display unit 170 may be 50 meters to 100 meters.

Unlike the present invention, when the distance between the relay unit 130 and each component is less than 50 meters, the communication coverage of the relay unit 130 is excessively reduced, so that an area inside the building where RF communication with each component is difficult may occur. .

In a normal situation other than a disaster situation, the relay unit 130 may communicate with the evacuation route providing unit 150 through a network (for example, the Internet, an intranet, or a mobile communication network), and the evacuation route with the relay unit 130 The providing unit 150 may perform client-server communication.

Meanwhile, the evacuation route providing unit 150 includes a third RF communication module installed in the building and communicating with the RF relay communication unit of the relay unit 130 to receive disaster information and evacuation information.

In addition, the evacuation route providing unit 150 derives the estimated evacuation personnel according to the evacuee information, and derives the evacuation route information according to the expected evacuation personnel. The evacuation route providing unit 150 transmits evacuation route information to the relay unit 130 through the third RF communication module.

The evacuation route providing unit 150 may perform RF communication with the relay unit 130 through the third RF communication module. The reason for performing the RF communication has been described in detail above, so a description thereof is omitted.

The evacuation route providing unit 150 derives the estimated evacuation personnel according to the frequency of the remaining sensing signal except for a portion of the piezoelectric sensor sensing signal that exceeds a preset human weight range.

When a disaster situation occurs in the building, various objects as well as evacuators may fall on the piezoelectric sensor 191 in the passage of the building. In order to estimate the number of evacuees, it is necessary to distinguish between sensing signals according to various objects and sensing signals according to evacuees.

For example, as illustrated in FIGS. 1 and 3, a plurality of evacuation sensor sensing units 190 may be installed in one passage. In FIG. 3, signal level 1 corresponds to the signal level of the sensing signal output from the piezoelectric sensor 191 of the evacuation sensor 180 shown on the left side of FIG. 1, and the channel level 2 of FIG. 3 is FIG. It may correspond to the signal level of the sensing signal output from the piezoelectric sensor 191 of the evacuation sensor sensing unit 190 shown on the right.

At this time, a signal level corresponding to the human weight range may be set. The channel level corresponding to the human body weight range may be set through various experiments, simulations, or machine learning of sensing signals in the production stage of the present invention.

When a heavier object than the person falls on the evacuation detection sensing unit 190 shown on the left side of FIG. 1, the signal level 1 of FIG. 3 may be maintained constant beyond the preset body weight range. Accordingly, the evacuation route providing unit may ignore the signal level 1.

Alternatively, when the evacuees step on the evacuation sensing unit 190 shown on the right side of FIG. 2, the waveform of the signal level 2 of FIG. 3 may vary within a preset human weight range. At this time, the greater the number of evacuators, the greater the likelihood that the evacuation detection sensing unit 190 will step on the evacuator, so the larger the frequency of the signal level 2, the larger the evacuators. That is, the estimated evacuation personnel can be derived through the frequency of the signal level 2.

Derivation of expected evacuees according to frequency may be set through various experiments, simulations, or machine learning of sensing signals in the production stage of the present invention.

The evacuation route providing unit 150 may include a database constructed by performing artificial intelligence deep-learning to provide evacuation route information. The evacuation route providing unit 150 may function as a server communicating with the relay unit 130.

The evacuation route providing unit 150 simulates the evacuation route location using the evacuation route map in the building and learns the evacuation route guidance using the simulated data.

The evacuation route providing unit 150 calculates an evacuation route based on the learned data according to the location of the disaster such as a fire. The disaster detection sensing unit 110 and the evacuation detection sensing unit 190, which are the basis of all of these operations, collect data by means of vibration magnitude, atmospheric temperature, smoke detection, and evacuation detection according to the earthquake to guide the evacuation. Data is transmitted to the evacuation route providing unit 150 for driving the algorithm.

In order to provide evacuation route information, large-capacity calculations must be performed. To this end, the evacuation route providing unit 150 may be implemented as a high-performance computing device including a processor and a memory unit.

In the present invention, since the calculation amount for deriving the evacuation route information is large, the evacuation route providing unit 150 instead of the relay unit 130 provides evacuation route information. Unlike the present invention, when the relay unit 130 calculates evacuation route information, since the relay unit 130, which should be provided in various places in the building, must be implemented as a high-performance computing device, installation and maintenance costs may rapidly increase, and performance When implemented with a low computing device, it may be difficult to provide prompt evacuation route information in an emergency situation such as a fire.

The evacuation route information may include information on the evacuation direction to be displayed by each evacuation route display unit 170 scattered in the building. In addition, evacuation route information may include an evacuation route map that can evacuate the area of the building where the fire occurred and the current location most efficiently and quickly.

The evacuation route display unit 170 is installed in the building, and includes a fourth RF communication module for receiving evacuation route information relayed from the relay unit 130 by communicating with the RF relay communication unit of the relay unit 130, and evacuation route information Follow the evacuation route.

The evacuation route display unit 170 may display the evacuation route on the wall or floor of the building with laser light having excellent smoke transmittance compared to visible light. Existing evacuation routes mainly use visible light, which has difficulty in effectively evacuating people because there is a limit to transmitting smoke in the event of a fire.

The evacuation route display unit 170 of the present invention is a laser light capable of effectively transmitting smoke, as shown in FIG. 1, so that the building displays the evacuation direction on the wall or the floor, so that people in the building can find the evacuation route calmly even in smoky situations. You can evacuate.

Meanwhile, each of the disaster detection sensing unit 110, the evacuation detection sensing unit 190, the relay unit 130, the evacuation route providing unit 150, and the evacuation route display unit 170 may include a battery unit (BAT). have. In the event of a disaster, the disaster detection sensing unit 110, the relay unit 130, the evacuation detection sensing unit 190, the evacuation route providing unit 150, and the evacuation route display unit 170 are automatically converted from external power to the battery unit (BAT). It can be switched to operate as the power of the battery unit (BAT).

As described above, when a disaster occurs, not only the wired / wireless communication system inside the building but also the power line supplying external power to each component may be cut off.

In the event of a disaster, the evacuation route providing unit 150 performs RF communication with a communication coverage of 50 to 100 meters, so it may be provided inside the building where the fire occurred. Accordingly, the evacuation route providing unit 150 may also be unable to receive external power when a fire occurs in the building, so it can be switched from the external power source to the battery unit BAT to receive power from the battery unit BAT.

Each of the disaster detection sensing unit 110, the evacuation detection sensing unit 190, the relay unit 130, and the evacuation route display unit 170 receives external power from the battery unit (BAT) under the control of the evacuation route providing unit 150. Instead of switching to, the external power can be switched to the battery unit (BAT) independently.

That is, if the disaster detection sensing unit 110 senses the occurrence of a fire or an earthquake, the disaster detection sensing unit 110 switches from an external power source to a battery unit (BAT) even if there is no instruction from the evacuation route providing unit 150 A negative (BAT) power supply can be used.

If the evacuation detection sensing unit 190 and the relay unit 130 also receive the disaster information transmitted from the disaster detection sensing unit 110, the battery unit (BAT) from the external power source even if there is no instruction from the evacuation route providing unit 150 Can be switched to. Since the evacuation route display unit 170 receives evacuation route information from the relay unit 130, it is possible to switch from the external power source to the battery unit BAT even if there is no instruction from the evacuation route providing unit 150.

As described above, the disaster sensing sensing unit 110, the relay unit 130, and the evacuation route display unit 170 can immediately respond to a fire by switching external power to the battery unit BAT independently when a fire occurs.

On the other hand, that is, if the expected number of evacuees derived by the evacuation route providing unit 150 is excessively large, an accident may occur in the process of evacuating to an emergency exit on the evacuation route.

In order to prevent this, the evacuation route providing unit 150 distributes the evacuation route information for evacuating the evacuated personnel to two or more emergency exits when the expected evacuation personnel exceeds the standard number of allowable emergency exits. On the other hand, if the building is excessively shaken due to an earthquake over a certain Richter scale, the building ceiling, etc. may collapse in the process of evacuation to the emergency exit, causing damage to the evacuees.

In order to prevent this, the evacuation route providing unit 150, if the building vibration information included in the disaster information is greater than the reference value, evacuate the earthquake of the building adjacent to the evacuation detection sensing unit 110 rather than the evacuation route to the emergency exit The evacuation route information that leads to the expected evacuation personnel is derived from the space.

Accordingly, since the distance to which the evacuators move to the emergency evacuation space may be shorter than the distance to which the evacuators move, the damage of evacuees caused by the collapse of the ceiling in the course of evacuation to the emergency exit can be reduced. The earthquake evacuation space may be provided with a means to protect the evacuee's body from the collapse of the ceiling.

On the other hand, the number of expected evacuees may be excessive, so that one earthquake evacuation space may not be able to accommodate the expected evacuation space. In this case, serious damage may occur in the course of evacuation to or from the evacuation space. Can be.

In order to prevent this, the evacuation route providing unit 150 is configured to distribute and evacuate the estimated evacuation personnel into two or more earthquake evacuation spaces when the expected evacuation space exceeds the allowable standard personnel. Evacuation route information is derived.

As described above, the embodiments according to the present invention have been looked at, and the fact that the present invention can be embodied in other specific forms without departing from the spirit or scope of the embodiments described above are those with ordinary knowledge in the art. It is self-evident. Therefore, the above-described embodiments are to be regarded as illustrative rather than restrictive, and accordingly, the present invention is not limited to the above description and may be modified within the scope of the appended claims and their equivalents.

Disaster Detection Sensing Department (110)
Relay (130),
First repeater (131)
Second repeater (133)
Evacuation route provider (150)
Evacuation route indicator (170)
Evacuation Detection Sensing Department (190)
Light Emitter (LE)
Battery part (BAT)

Claims (2)

In the disaster communication system using a short-range communication network installed in a building including an RF communication network,
A disaster detection sensing unit installed in the building and sensing whether a disaster has occurred, and transmitting disaster information through a first RF communication module;
A plurality of evacuators that are provided on the floor of the passage of the building and include a piezoelectric sensor that outputs a sensing signal when an evacuator in the passage steps on it, and a second RF communication module that transmits evacuator information according to the sensing signal of the piezoelectric sensor Detection sensing unit;
It is installed in the building, and includes an RF relay communication unit for receiving the disaster information and the evacuation information by communicating with the first RF communication module and the second RF communication module, the disaster information and the RF relay communication unit A relay unit relaying the evacuator information;
It is installed in the building, and includes a third RF communication module that receives the disaster information and the evacuation information by communicating with the RF relay communication unit, derives the expected evacuation personnel according to the evacuation information, and the expected response An evacuation route providing unit for deriving evacuation route information according to the number of pizzas and transmitting the evacuation route information to the relay unit through the third RF communication module; And
And a fourth RF communication module installed in the building and communicating with the RF relay communication unit to receive the evacuation route information relayed from the relay unit, and an evacuation route display unit displaying an evacuation route according to the evacuation route information Including,
The first RF communication module to the fourth RF communication module, and the RF relay communication unit communicates in a frequency band of 440 Mhz to 447 Mhz, and the distance between the disaster detection sensing unit and the relay unit is 50 to 100 meters. The distance between the evacuation detection sensing unit and the relay unit is 50 meters to 100 meters, the distance between the relay unit and the evacuation route providing unit is 50 meters to 100 meters, and the distance between the relay unit and the evacuation route indicator is 50 meters to 100 meters. ,
The evacuation route providing unit,
The estimated evacuation number is derived according to the frequency of the remaining sensing signal except for a portion of the sensing signal of the piezoelectric sensor whose signal level exceeds a preset human weight range,
When the expected evacuation personnel exceeds the standard number of allowable emergency exits, the evacuation route information for dispersing the expected evacuation personnel into two or more emergency exits is derived,
If the building vibration information included in the disaster information is greater than a reference value, evacuation to induce the expected evacuation personnel into the earthquake evacuation space of the building located adjacent to the evacuation detection sensing unit, not the evacuation route to the emergency exit Deriving route information,
Short distance installed in a building that derives evacuation route information for evacuation by dispersing the expected evacuation personnel into two or more earthquake evacuation spaces when the expected evacuation personnel exceeds the acceptable standard evacuation space Disaster communication system using communication network.
According to claim 1,
Each of the disaster detection sensing unit, the evacuation sensor sensing unit, the relay unit, the evacuation route providing unit, and the evacuation route display unit includes a battery unit,
In the event of a fire, the disaster detection sensing unit, the evacuation detection sensing unit, the relay unit, the evacuation route providing unit, and the evacuation route display unit automatically switch from external power to the battery unit to operate with power from the battery unit Disaster communication system using a short-range communication network installed in a building.

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