KR20220154425A - Disaster safety systems based on IoT sensor networks using Signage - Google Patents

Abstract

The present invention relates to a technique for wirelessly transmitting disaster occurrence information in different periods through signage installed inside and outside buildings or in public places to display various publicity and advertising information, and allowing a user terminal, located around the signage, to selectively receive only disaster occurrence information in a specific period according to a battery charge amount thereof and provide the same to a user. According to the present invention, an IoT sensor network-based disaster safety system using signage comprises: a sensor network having a plurality of sensor nodes for detecting the occurrence of a disaster, and a sink node for operating the sensor nodes, collecting sensing values from the respective sensor nodes, and transmitting the same to signage in predetermined periods; the signage which is installed inside or outside a facility to output pre-registered content images, determines whether a disaster has occurred based on the sensing values collected from the sensor network, and generates disaster occurrence information including a disaster occurrence message and wirelessly transmits the same in predetermined periods when determining that the disaster has occurred, but transmits first disaster occurrence information in a first period by using a first frequency, and wirelessly transmits second disaster occurrence information in a second period by using a second frequency; and a user terminal on which a pre-installed disaster guidance application is automatically executed, based on the reception of the disaster occurrence information transmitted from the signage, to selectively receive either the first disaster occurrence information or the second disaster occurrence information according to the current remaining battery amount, and output the received disaster occurrence information. Therefore, the user can respond more quickly to disaster situations.

Description

Disaster safety systems based on IoT sensor networks using Signage}

The present invention wirelessly transmits disaster occurrence information at different cycles through signage installed inside or outside a building or in a public place to display various publicity and advertisement information, and user terminals located around it wirelessly transmit disaster occurrence information at a specific cycle according to their battery charge amount. It relates to a technology for selectively receiving only disaster occurrence information of and providing it to a user.

Advertisers are looking for other advertising media with a high advertising effect due to the decline in advertising effectiveness of the four major media, TV, radio, newspapers, and magazines. Due to the decline, it is positioning itself as an advertising medium that replaces the existing analog signboards or posters.

In general, 'Digital Signage' is a convergence platform that displays images and information on display screens or projectors in public or commercial spaces and remotely manages them through a network, and is sometimes referred to as 'outdoor advertising'.

These digital signage devices are installed in large buildings with large floating populations, such as terminals, government offices, bus stops, department stores, subways, airports, hotels, hospitals, and public places where many people stay for a certain period of time, such as shopping malls, movie theaters, and restaurants. information such as news or advertisements, promotional videos or advertisement videos, and the like, and the demand for them is continuously increasing.

On the other hand, recent natural disasters such as earthquakes have occurred due to rapid atmospheric changes such as global warming, as well as fires have occurred frequently. It is becoming.

Accordingly, in a building or public place of a certain size or larger, it is prescribed to inform the public of a disaster occurrence situation through an emergency signal or an audio announcement broadcast when an emergency occurs.

However, as the surroundings become confused due to the disaster occurrence situation information, accurate delivery of the disaster occurrence situation may not be performed for reasons such as not being able to hear the contents of the disaster broadcast clearly.

1. Korea Patent Publication No. 2017-0025250 (Name: Disaster guidance system and method using digital information display) 2. Korea Patent Registration No. 10-1595972 (Name: Real-time road surface display device for content by situation through road surface display type digital signage module)

Therefore, the present invention was created in view of the above circumstances, and the signage wirelessly transmits disaster occurrence information at different cycles, and a user terminal located nearby selectively selects only disaster occurrence information of a specific cycle according to the amount of charge of its battery. By receiving and providing the information to the user, the user can easily check the disaster occurrence situation around them even in a location where the signage cannot be seen with the naked eye, as well as stably providing disaster occurrence information for a longer period of time even when the battery charge is low. Its technical purpose is to provide a disaster safety system based on an IoT sensor network using signage that enables users to receive data.

According to one aspect of the present invention for achieving the above object, in addition to operating a plurality of sensor nodes and the sensor nodes for detecting the occurrence of disasters, sensing values are collected from each sensor node and transmitted to signage at regular intervals. A sensor network having a sink node and a sensor network installed inside or outside the facility outputs a pre-registered content video, and determines whether a disaster has occurred based on the sensing values collected from the sensor network. Disaster occurrence information including an occurrence message is generated and transmitted wirelessly at regular intervals, while transmitting the first disaster occurrence information in a first cycle using a first frequency while a second disaster occurs in a second cycle using a second frequency Based on the signage that transmits information wirelessly and the disaster information transmitted from the signage, the pre-installed disaster information application is automatically executed to provide either the first disaster information or the second disaster information according to the current battery level. There is provided a disaster safety system based on an IoT sensor network using signage, characterized in that it is configured to include a user terminal that selectively receives and outputs the received disaster occurrence information.

In addition, the second period, which is the disaster occurrence information transmission period, is set to be greater than the first period, and the user terminal receives and processes the first disaster occurrence information of the first period when the battery remaining amount is equal to or greater than a preset reference charge amount, and the battery Provided is a disaster safety system based on an IoT sensor network using signage, characterized in that it receives and processes second disaster occurrence information of a second period when the remaining amount is less than a preset reference charging amount.

In addition, the user terminal is based on an IoT sensor network using signage, characterized in that when the battery remaining amount is less than a preset charge amount in a state of receiving and processing the first disaster occurrence information, from thereafter receiving and processing the second disaster occurrence information of disaster safety systems are provided.

In addition, the first and second frequencies are provided with a disaster safety system based on an IoT sensor network using signage, characterized in that each is set to a frequency of a different guard band area in a preset ISM band.

In addition, the sensor network has a sensor node including sensors including a fire detection sensor, an earthquake detection sensor, and a voice level detection sensor to transmit sensing information including a sensing value for each sensor to the signage, and the signage When the sensing value of at least one of the fire detection sensor or the earthquake detection sensor exceeds a preset reference value, it is judged as a disaster occurrence determination standby state, and the voice level received through the voice detection sensor in the disaster occurrence determination standby state is a preset standard Provided is a disaster safety system based on an IoT sensor network using signage, characterized in that it is finally determined as a disaster situation when the voice level is exceeded.

According to the present invention, by converging wireless sensing network technology with signage displaying various publicity and advertising information in public places inside and outside buildings, disaster situations are evacuated early and provided to the public in real time, thereby responding to disaster situations more quickly. There is an effect that can be dealt with.

In addition, according to the present invention, disaster occurrence information is provided from a signage pre-installed in a building to a user terminal located inside or outside the facility, and the disaster occurrence information is output by executing an application installed in the user terminal, thereby making disaster disaster more economical. In addition to being able to build a safety system, there is an effect that the user can easily check the surrounding disaster situation even at a distance where the signage cannot be checked with the naked eye.

In particular, in the present invention, the signage wirelessly transmits disaster occurrence information at different cycles, and the user terminal selectively receives disaster occurrence information of a slower cycle than when the battery charge is low and outputs disaster occurrence information, so that when the battery charge is low In addition, it is possible to receive disaster occurrence information stably for a longer period of time.

1 is a diagram showing a schematic configuration of a disaster safety system based on an IoT sensor network using signage according to a first embodiment of the present invention.
FIG. 2 is a block diagram showing the functional separation of the internal structure of the signage 100 shown in FIG. 1; FIG.
FIG. 3 is a block diagram illustrating the control unit 150 shown in FIG. 2 by function.
4 is a diagram for explaining a frequency allocation method for transmitting first and second disaster occurrence information in the disaster occurrence information output block 154 shown in FIG. 3;
Figure 5 is a diagram for explaining the operation of the disaster safety system based on the IoT sensor network using the signage shown in Figure 1;

The embodiments described in the present invention and the configurations shown in the drawings are only preferred embodiments of the present invention, and do not represent all the technical ideas of the present invention, so the scope of the present invention is limited to the embodiments and drawings described in the text. should not be construed as being limited by That is, since the embodiment can be changed in various ways and can have various forms, it should be understood that the scope of the present invention includes equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all of them or only such effects, the scope of the present invention should not be construed as being limited thereto.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless defined otherwise. Terms defined in commonly used dictionaries should be interpreted as being consistent with meanings in the context of related art, and cannot be interpreted as having ideal or excessively formal meanings that are not clearly defined in the present invention.

1 is a diagram showing a schematic configuration of a disaster safety system based on an IoT sensor network using signage according to a first embodiment of the present invention.

Referring to FIG. 1, an IoT sensor network-based disaster safety system using signage according to the present invention includes a signage 100, a sensor network 200, and a user terminal 300, and a manager terminal 400 ) may be further included.

The signage 100 is a display device installed inside or outside a building or in a public place. In the present invention, the signage 100 displays and outputs a content image, analyzes sensor values collected from the sensor network 200, It determines whether a disaster has occurred, and when a disaster occurs, it transmits disaster occurrence information to the user terminal 300 located nearby.

At this time, the signage 100 may receive content video information from a service server (not shown) or the manager terminal 400 and may transmit disaster occurrence information to the service server or manager terminal 400 .

In addition, the signage 100 wirelessly transmits disaster occurrence information using the ISM band, which is a non-commercial frequency band, and transmits disaster occurrence information wirelessly in different patterns using different guard band frequencies on both sides in the preset ISM band. send out

The sensor network 200 includes a plurality of sensor nodes (210, S1, S2, ..., SN) for determining the occurrence of a disaster, and sensors for each sensor node 210 in a low-power communication method with the sensor nodes 210 It includes a sink node 220 that collects values and transmits them to the signage 100 through a short-range communication method such as Bluetooth or ZigBee.

The sensor node 210 includes a fire detection sensor and an earthquake detection sensor, and may further include a voice level detection sensor. Here, the fire detection sensor includes a sensor capable of sensing flame, smoke, gas, temperature, and the like, and the earthquake detection sensor may be formed of a vibration sensor. And, the voice level detection sensor senses the surrounding voice level value.

The sink node 220 sets the sensor node 210 to sleep or wake-up state, collects sensing values from the wake-up state sensor node, and then performs sensing for each sensor node identification code. Sensing information consisting of values is transmitted to the signage 100 .

When a signal of a preset ISM band is received from the signage 100 in a state in which the disaster guidance application is installed, the user terminal 300 is automatically executed and switched to a sleep mode, and configured to output disaster occurrence information.

At this time, the user terminal 300 selectively receives one disaster occurrence information among a plurality of disaster occurrence information having different transmission cycles received from the signage 100 according to the current battery charge amount of the user terminal 300 . The user terminal 300 is a personal communication terminal such as a smart phone and can receive a radio signal of the ISM band.

FIG. 2 is a block diagram showing the functional separation of the internal configuration of the signage 100 shown in FIG. 1. Referring to FIG.

Referring to FIG. 2 , the signage 100 includes a display unit 110, a short-distance communication unit 120, a disaster occurrence information output unit 130, a data storage unit 140, and a control unit 150. And, a wired or wireless communication unit 160 for communicating with the manager terminal 400 and the service server may be additionally provided.

The display unit 110 displays and outputs a content image or displays and outputs disaster occurrence information.

The short-distance communication unit 120 communicates with the sensor network 200 and collects sensing values from the sensor network 200 to determine whether a disaster has occurred in units of a predetermined period.

The disaster occurrence information output unit 130 broadcasts the disaster occurrence information at different transmission cycles using different frequencies. That is, the disaster occurrence information output unit 130 may transmit the first disaster occurrence information in a first cycle using a first frequency and transmit the second disaster occurrence information in a second cycle using a second frequency. In this case, the first cycle may be made of a transmission cycle faster than the second cycle, and the first frequency may be set to a higher frequency than the second frequency. This is a first disaster occurrence information of high power consumption having a faster first cycle with a higher first frequency and a lower second frequency so that it can be selectively received and processed in consideration of the battery charge amount of the user terminal 300. This is to generate second disaster occurrence information having a slow second cycle and low power consumption.

The data storage unit 140 includes content information including content video and output time, content video output schedule information, disaster occurrence information transmission pattern, disaster occurrence message, various disaster occurrence service information such as a facility map, sensor network 20 Stores the disaster occurrence determination criterion information including the sensing values collected from , the reference sensing values for each sensor, and the location of each sensor node. Here, the disaster occurrence information transmission pattern is transmission pattern information of the first and second disaster occurrence information, and is set to different transmission frequencies and different transmission cycles, and may additionally consist of different disaster occurrence messages. Here, the disaster occurrence message may include a disaster type and a disaster degree, and may further include disaster evacuation information. At this time, the disaster evacuation information may be added only to the first disaster occurrence information.

The control unit 150 determines whether a disaster has occurred based on the sensor value, controls the signage to perform its original function of outputting a content image through the display unit 110 at normal times, and displays the display unit 110 when a disaster occurs. In addition to outputting disaster occurrence information through , control is provided to provide a series of disaster safety services that broadcast disaster occurrence information at different cycles using different preset frequencies.

As shown in FIG. 3, the controller 150 includes a content output block 151, a sensing value collection block 152, a disaster occurrence determination block 153, and a disaster occurrence information output block 154. do.

The content output block 151 collects content information from the outside, stores it in the data storage unit 140, and generates content video output schedule information based on the output time of the content information stored in the data storage unit 140. According to the schedule information, a content image to be displayed at the current time is output through the display unit 110 .

The sensing value collection block 152 collects sensing values for each sensor node from the sensor network 200 at regular intervals. At this time, the sensing value collection block 152 collects sensing information in a first cycle from the sensor network 200 in normal times, and collects sensing information in a second cycle faster than the first cycle in case of a disaster.

The disaster occurrence determination block 153 determines whether a disaster has occurred based on the sensing values for each sensor node collected in the sensor value collection block 152. For example, the disaster occurrence determination block 153 determines the occurrence of a fire based on whether temperature, flame, and smoke detection values exceed preset reference sensing values, and the vibration detection sensing value determines the preset reference sensing value. An earthquake can be judged on the basis of whether or not it exceeds. In addition, the degree of disaster occurrence is determined based on the difference between the collected sensing values and the reference sensing values.

In addition, when the sensing value of at least one of the fire detection sensor or the earthquake detection sensor exceeds a preset reference value, the disaster occurrence determination block 153 determines the disaster occurrence determination standby state, and in the disaster occurrence determination standby state, the voice detection sensor is activated. When the received voice level exceeds the preset reference voice level, it may be finally determined as a disaster occurrence situation. This is in consideration of the fact that, when there are people around in the event of a disaster, people reflexively shout with a voice higher than a certain level.

At this time, the disaster occurrence determination block 153 is based only on the disaster occurrence determination result according to the sensing value of the fire detection sensor or the earthquake detection sensor when the movement of people is less than a certain stop time, for example, after 12:00 pm and before 9:00 am can finally determine whether a disaster has occurred.

The disaster occurrence information output block 154 transmits the first disaster occurrence information in a first cycle using a first frequency from the time of determining the occurrence of a disaster to canceling the occurrence of a disaster, and also transmits the second disaster occurrence information in a second cycle using a second frequency. Control to transmit generation information wirelessly.

At this time, the disaster occurrence information is transmitted using the ISM band (Industrial Scientific Medical band), which can be used by industrial, scientific, and medical devices without separate use permission from the government, and currently 900MHz, 2.4GHz, and 5.7GHz bands worldwide A common ISM band is set on In particular, in the present invention, as shown in FIG. 4, the first frequency G2 and the second disaster occurrence information are transmitted to the guard areas G1 and G2 on both sides of the main use band in the preset ISM band, respectively. Each is set to the second frequency (G1) for transmitting generation information. This is to minimize mutual interference by wirelessly transmitting the first disaster occurrence information and the second disaster occurrence information using the lowest frequency band and the highest frequency band in the preset ISM band.

Next, the operation of the disaster safety system based on the IoT sensor network using the signage having the above configuration will be described with reference to FIG. 5 .

First, a sensor network 200 in which a plurality of sensor nodes 210 for detecting a disaster are connected to a sink node 220 is installed around the signage 100, and the sink node 220 and the signage 100 ) is set to perform mutual short-range wireless communication.

In addition, the user terminal 300 is installed with an emergency guidance application that is automatically executed when a signal of one of first or second disaster occurrence information of a first or second frequency is received.

In the above state, the signage 100 collects content information from the outside and performs a series of image output operations for displaying and outputting the collected content images according to preset schedule information (ST100).

In addition, the signage 100 collects sensing values of sensor nodes for determining the occurrence of a disaster from the sensor network 200 in units of preset cycles (ST200). At this time, the sensor network 200 transmits sensing information including a fire detection sensing value, an earthquake detection sensing value, and a voice level sensing value to the signage 100 at a preset period.

That is, the signage 100 simultaneously outputs a content image and collects sensing values.

In addition, the signage 100 determines whether a disaster has occurred based on the sensing values collected in the step ST200 (ST300). The signage 100 determines that a disaster has occurred when a sensing value for each sensor node identification code exceeds a predetermined sensing reference value.

At this time, when the sensing value of at least one of the fire detection sensor or the earthquake detection sensor exceeds a preset reference value, the signage 100 determines that the disaster has occurred and received the signal through the voice detection sensor in the disaster determination standby state. When the generated voice level exceeds a preset reference voice level, it may be finally determined as a disaster occurrence situation.

In addition, when the signage 100 determines that a disaster has occurred as a result of the determination in the step ST300, the output of the content image is stopped through the display unit 110 and a disaster occurrence message is output (ST400). Using the first and second frequencies, the first and second disaster occurrence information are wirelessly transmitted at different cycles (ST500). At this time, the display unit 110 displays and outputs a disaster information message including the type of disaster and the degree of disaster.

On the other hand, the user terminal 300 located around the signage 100 automatically executes a disaster guidance application as one of the first or second disaster information of the first or second frequency is received ( ST600).

The user terminal 300 checks the current battery level of the corresponding user terminal 300 along with the execution of the disaster guidance application (ST700).

Then, the user terminal 300 selectively receives and processes one of the first disaster occurrence information and the second disaster occurrence information corresponding to the current battery remaining amount according to the execution of the disaster guidance application (ST800). That is, the user terminal 300 receives the first disaster occurrence information of the first frequency in a first cycle when the battery remaining amount is equal to or greater than the reference charging amount, and receives the second disaster occurrence information of the second frequency in the second frequency when the battery remaining amount is less than the reference charging amount. received periodically. In addition, the user terminal 300 may receive and process the second disaster occurrence information from thereafter when the battery remaining amount becomes less than the preset charging amount while receiving and processing the first disaster occurrence information.

The user terminal 300 displays and outputs the disaster occurrence information received in step ST800 in preference to other operation programs (ST900). That is, even in a situation where other programs are operated through the user terminal 300, disaster occurrence information is preferentially output so that the user can easily recognize the current disaster occurrence situation.

In addition, when the signage 100 determines that a disaster has occurred in step ST300, it can transmit disaster information to the previously registered manager terminal 400 so that disaster response for the corresponding facility can be quickly executed. . For example, a manager can promptly respond to a disaster by providing fire information to a related institution, such as a fire station, police station, or 119, depending on the type and severity of the disaster.

100: signage, 110: display unit,
120: short-range communication unit, 130: disaster occurrence information output unit,
140: data storage unit, 150: control unit,
160: communication unit, 200: sensor network,
210: sensor node, 220: sink node,
300: user terminal, 400: manager terminal.

Claims (5)

A sensor network having a plurality of sensor nodes for detecting a disaster and a sink node that operates the sensor nodes, collects sensing values from each sensor node, and transmits them to signage at regular intervals;
In addition to outputting pre-registered content images installed inside or outside the facility, whether a disaster has occurred is determined based on the sensing values collected from the sensor network, and disaster occurrence information including a disaster occurrence message is provided when a disaster occurrence is determined. A signage that generates and transmits wirelessly at regular intervals, transmits first disaster information in a first cycle using a first frequency, and wirelessly transmits second disaster information in a second cycle using a second frequency,
Based on the reception of the disaster occurrence information transmitted from the signage, the pre-installed disaster information application is automatically executed to select and receive either the first disaster occurrence information or the second disaster occurrence information according to the current battery level, and the received disaster occurrence information IoT sensor network-based disaster safety system using signage, characterized in that configured to include a user terminal that outputs.
According to claim 1,
The second period, which is the disaster occurrence information transmission period, is set larger than the first period,
The user terminal receives and processes the first disaster occurrence information of the first cycle when the battery remaining amount is greater than or equal to the preset reference charge amount, and receives and processes the second disaster occurrence information of the second cycle when the battery remaining amount is less than the preset reference charge amount Disaster safety system based on IoT sensor network using signage, characterized in that.
According to claim 2,
The user terminal receives and processes second disaster occurrence information from thereafter when the battery remaining amount is less than a preset charge amount in a state of receiving and processing the first disaster occurrence information, IoT sensor network-based disaster using signage, characterized in that safety system.
According to claim 1,
Disaster safety system based on IoT sensor network using signage, characterized in that the first and second frequencies are respectively set to frequencies of different guard band areas in a preset ISM band.
According to claim 1,
The sensor network has a sensor node including sensors including a fire detection sensor, an earthquake detection sensor, and a voice level detection sensor to transmit sensing information including a sensing value for each sensor to a signage,
When the sensing value of at least one of the fire detection sensor and the earthquake detection sensor exceeds a predetermined reference value, the signage determines that the disaster has occurred and the voice level received through the voice sensor in the disaster determination standby state A disaster safety system based on an IoT sensor network using signage, characterized in that it is finally determined as a disaster situation when a predetermined reference voice level is exceeded.

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