KR101873831B1 - Evacuee guidance system and method using sensor network and directional speaker - Google Patents

Abstract

The present invention relates to a system for inducing evacuation using a sensor network and a directional speaker, and a method thereof. The present invention analyzes a current status and a cause of a social disaster and establishes a gas and fire detection sensor network, an evacuation induction type directional speaker and an LED lighting system at the indoor in order to improve disaster response ability. Also, in case of indoor gas explosion, fire occurrence and flood disaster occurrence, an evacuation induction algorithm is applied to be rapidly evacuated through an early warning and a disaster situation propagation system using the directional speaker in a disaster region and a directional sound system is immediately output. In addition, the present invention displays an evacuation place on LED light of the LED lighting system and rapidly induces evacuation in the disaster region so as to be rapidly evacuated, thereby reducing casualties and maintaining a safety management system. The system for inducing evacuation comprises: a plurality of sensors; a gateway; an evacuation induction operating system; the directional speaker system (IDS); and a plurality of LED lighting systems.

Description

[0001] The present invention relates to an evacuation guidance system and method using a sensor network and a directional speaker,

The present invention relates to an evacuation guidance system and a method thereof, and more particularly, to an evacuation guidance system and a method thereof, in which a gas, a fire detection sensor network, an evacuation induction- The lighting system is constructed, the evacuation guidance algorithm is applied to emergency evacuation through the early warning and disaster situation propagation system using the directional speaker in the disaster area where the indoor gas explosion and fire occur, and it is immediately output to the directional acoustic system, The present invention relates to an evacuation guidance system using a sensor network and a directional speaker and a method thereof, in which evacuation is promptly evacuated in a disaster area so as to evacuate quickly by displaying a direction to an LED light.

In terms of socio-cultural aspects, the social climate that gives priority to a comfortable and safe living environment has been spreading with the improvement of the standard of living of the people, and when the urban concentration of the population is increasing, the disaster in the urban area is likely to cause mass casualties , A rapid increase in national demand for a safe living environment, and a long-term disaster management system based on social change are needed.

It is necessary to establish a long-term disaster response system for rural and rural areas because the aging of agriculture in rural areas becomes more vulnerable to disaster response than in urban areas.

It is necessary to build a disaster response system in accordance with local characteristics and regional characteristics.

From the economic and industrial point of view, Korea has developed rapidly into an advanced civilized civilized society through repeated economic growth. As a result, unlike the past, various types of disasters such as subway accidents, gas explosions, And it is necessary to make a comprehensive and strategic response to social disasters.

As the frequency and magnitude of social disasters increase, the economic damage caused by indirect damage has increased not only directly but also the economic costs of the state and private sector are rapidly increasing.

In addition to the complexity of the occurrence of disasters, uncertainty factors such as climate change are increasing, so it is necessary to establish a comprehensive response system using information and communication technologies, and it is urgently required to establish a preventive centered disaster response system .

Regarding the social disaster response system, the decision on safety related policy is based on Article 9 of the "Basic Law on Disaster and Safety Management" and the Prime Minister establishes a "Central Safety Management Committee" to deliberate disaster and safety management policy. For the practical review, there are the Safety Policy Coordination Committee, which is led by the Minister of National Defense, and the Regional Committee, for reviewing the local disaster safety policy.

For large-scale social disasters, including natural disasters, the "National Disaster Safety Headquarters" is established under the Article 14 of the "Basic Act on Disaster and Safety Management", which is the head of the National Security Agency, to oversee disaster countermeasures. The Central and Local Accident Prevention Headquarters have been set up to direct the disaster and safety headquarters of the provincial units and municipal units.

In order to share disaster information, the system is structured to share disaster situation information by linking the central disaster safety situation room with the local unit emergency disaster safety situation room and the municipal disaster safety situation room.

In order to do this, technology that has been difficult to implement in the past has been realized by applying cutting-edge information and communication technologies using ICT-related element technologies such as communication, image, and sensor for early and proactive preparation of social disasters in terms of technology. It is necessary to construct an effective social disaster prevention system at a low cost by actively incorporating ICT technology into the field. Because disaster management budget and manpower shortage of local governments make it difficult to carry out actual field-oriented disaster management, it is required to construct a disaster response system that effectively manages disaster-hit areas by utilizing automation and information technology.

In the event of a disaster, if a proper response to the first disaster is not achieved, it often leads to a second disaster, and a management system capable of early warning and early response is needed.

In the case of an increase in the number of multi-use facilities, it is necessary to evacuate a large number of people from a crowded place at the time of a disaster, and it is necessary to develop a method for effectively evacuating the ICT technology.

As a related art 1, Patent Publication No. 10-2012-0066222 discloses a " top-down evacuation ladder system for emergency evacuation in case of fire or gas leakage ".

1 is a perspective view of a conventional top-down escape ladder system for emergency evacuation.

A top-down type escape ladder device for emergency evacuation using a folding ladder in the event of a fire or gas leakage is characterized in that the folding ladder 20 is accommodated together with the operating lever 22 and the pressure reducing device 23, A housing (10); A controller (30) installed adjacent to one side of the housing (10) and judging a drive output to the operation lever (22); Input means (40) connected to the controller (30) for detecting gas leakage, fire, and signals corresponding to opening and closing of the cover (12); And an output means (50) connected to the controller (30) for driving an alarm (54) having a status indicator (33) and an audible indicator buzzer or an audible indicator speaker. Accordingly, in case of fire or gas leakage, the emergency escape ladder for emergency evacuation is unlocked in the lower door of the escape ladder connected to the gas / smoke sensor, the controller linked with the heat sensor, and when gas or heat is detected, When the user opens the upper door of the escape ladder and releases the latching device of the ratchet type decompression device, the escape ladder composed of a multi-tiered top-down structure is unfolded, and a safe escape path is provided to the lower layer.

In developed countries such as Japan, USA, and Europe, it is a trend to apply the service to the people through CCTV, directional speaker, IoT (Internet of Things) based case, alarm and next generation response system in response to disaster damage.

Especially, in the case of flood disasters, 17.2% of deaths occurred in the case of flood disaster, and it is considered that special management plan is needed because the death rate is much higher than fire (0.6%) and fall (4.4%).

In the case of floods, storms and tsunamis, which are frequently caused by accidents, the major cause of the accidents was rollovers, slings, fishing, And it was observed that the place of occurrence occurred mostly in rivers, valleys, reed marshes and camping sites.

In the event of a disaster such as fire, gas leakage, or collapse, the frequency of occurrence of floods, storms, and tsunamis is low, but multiple uses such as high-rise buildings, subways, shopping centers, gymnasiums and underground shopping malls Disaster response measures are needed to minimize damage to facilities.

Patent Publication No. 10-2012-0066222 (Published on June 22, 2012), "Top-down evacuation ladder system for emergency evacuation in case of fire or gas leak"

An object of the present invention to solve the problems of the prior art is to construct a gas, fire detection sensor network, an evacuation induction-oriented directional speaker and an LED lighting system indoors in order to improve disaster response capability by analyzing the current situation and cause of social disasters The emergency evacuation guidance algorithm is applied to emergency evacuation through the early warning and disaster situation propagation system using directional loudspeaker in the area where the gas explosion or fire occurs in case of fire, and the result is output to the directive speaker acoustical system. It provides a evacuation guidance system using a sensor network and directional loudspeakers to evacuate urgently in a disaster area to promptly evacuate by displaying a direction to reduce damage to people and maintain safety management system.

Another object of the present invention is to provide a method of providing evacuation guidance using a sensor network and a directional speaker.

In order to achieve the object of the present invention, an evacuation-guiding directional acoustic system using a sensor network and directional loudspeakers is provided with a device ID assigned thereto and adapted to detect gas leak detection, fire detection, river water level, rainfall and flow velocity, A plurality of sensors installed in the area; A sink node for collecting the device ID, the gas leakage, the fire detection information, the river water level, the rainfall and the flow velocity or the wind speed information from the sensors, A gateway for receiving fire detection information, the river water level, the rainfall and flow velocity, or the wind speed information through a wireless sensor network (WSN) and transmitting the information; The device receives the device ID, the gas leakage, the fire detection information, the river water level, the rainfall and the flow velocity or the wind velocity information from the gateway through the LAN or the Wi-Fi, In this paper, we propose an evacuation guidance algorithm that identifies the location of an accident in the area where the accident occurred, classifies the accident area, the hazard area, An evacuation guidance operating system for controlling to be outputted to each directional speaker installed in each area connected to a control unit of the system and an amplifier which is a sound source modulation variable output control and to be displayed as an LED lighting system informing a doorway to an evacuation place;
The refuge induction operating system is interlocked with the central control system,
The control unit of the directional speaker system adjusts the volume of the amplifier and modulates the voice signal to control the maximum emission distance, the emission angle control of the directional speaker, the longest emission distance, and the emission angle (15 ° to 90 °) range according to a disaster situation installed in each area by a motor control signal receiver and a motor connected to the control unit, A directional speaker system (IDS) having a plurality of directional speakers capable of pan / tilt adjustment; And
An LED lighting control controller connected to the evacuation guiding operating system and displaying an LED illuminating light in a safe entrance direction in case of a disaster to inform the emergency evacuation route and a plurality of LED lighting systems installed in each area,
Wherein the directional speaker comprises: a preamplifier for amplifying a voice signal; A modulator for modulating the voice signal amplified from the preamplifier; A high pass filter (HPF) for high pass filtering the modulated voice signal in a band of 40 to 200 kHz; A power amplifier output section for amplifying and outputting a high pass filtered voice signal; A radiation angle adjusting unit for adjusting a radiation angle of a directional speaker installed in each area by a motor control signal receiver connected to the control unit and a motor; A radiation angle control unit for adjusting a radiation angle of the directional speaker; A phase shift control section for adjusting the radiation angle phase in a range of ± (15 ° to 90 °); An AVC control unit for controlling the audio output according to the set volume; A sound source reaching distance controller for controlling a sound source reaching distance within a predetermined distance; A sound source reaching distance adjuster for adjusting a sound source reaching distance of the speaker; And a speaker oscillation unit oscillating to output the amplified voice signal,
And an audible signal and an audible signal are output from the directional speaker connected to the evacuation guiding operating system through a mobile communication network in the direction of the smart device. The non-audible signal causes the disaster location and the disaster Further comprising a smart device installed with an evacuation guidance app (App) provided with situation information and an evacuation guidance route,
The non-audible signal frequency of the non-audible signal uses an audible signal of 10 kHz to 300 GHz in the non-audible frequency band which can not be heard by the human ear.

In order to achieve the other object of the present invention, a method of providing evacuation guidance using a sensor network and a directional speaker includes a step of assigning a device ID and transmitting a device ID and a gas leak from a plurality of sensors installed in each area to a sink node, The fire detection information, the river water level, the rainfall and the flow rate, or the wind speed information from the sink node, Transmitting to a gateway via a wireless sensor network (WSN); The device ID and the gas leakage, the fire detection information, the river water level, the rainfall and the flow rate, or the wind speed information are received from the gateway through a LAN or a wireless LAN (Wi-Fi) The evacuation guidance operating system identifies the accident location in the disaster occurrence area and classifies the accident area, the danger area, and the attention area so that the early warning and disaster In order to evacuate emergency situations through a situation propagation system, a control system of the directional speaker system (IDS) is applied by using an evacuation induction algorithm for searching the shortest distance evacuation route other than the accident area. , And a radiation angle and pan / tilt control in the range of ± (15 ° to 90 °) Controlling the LED lighting system installed in each area to be controlled so as to be output to a speaker with a directional speaker and informing a doorway to a place of evacuation; The evacuation guidance operating system is installed in each area connected to the control unit of the directional speaker system (IDS) connected with the evacuation guidance operating system and the amplifier which is controlled by the variable sound source modulation when interrupted by the central control system And the directional speaker is capable of varying the output level, the radiation angle, and the pan / tilt of each stage according to a disaster situation. The control unit adjusts the volume of the amplifier, modulates the voice signal, And outputs a voice signal informing a disaster situation by controlling the emission distance, the radiation angle control of the directional speaker, the longest emission distance adjustment, and the emission angle adjustment, and outputs the amplified voice signal to the motor control signal receiver connected to the control unit, To a directional speaker of the speaker;
Wherein the directional speaker comprises: a preamplifier for amplifying a voice signal; A modulator for modulating the voice signal amplified from the preamplifier; A high pass filter (HPF) for high pass filtering the modulated voice signal in a band of 40 to 200 kHz; A power amplifier output section for amplifying and outputting a high pass filtered voice signal; A radiation angle adjusting unit for adjusting a radiation angle of a directional speaker installed in each area by a motor control signal receiver connected to the control unit and a motor; A radiation angle control unit for adjusting a radiation angle of the directional speaker; A phase shift control section for adjusting the radiation angle phase in a range of ± (15 ° to 90 °); An AVC control unit for controlling the audio output according to the set volume; A sound source reaching distance controller for controlling a sound source reaching distance within a predetermined distance; A sound source reaching distance adjuster for adjusting a sound source reaching distance of the speaker; And a speaker oscillation unit oscillating to output the amplified voice signal,
The evacuation guidance operating system is connected to the evacuation guiding operating system through a mobile communication network, and an audible signal and a non-audible signal are output from the directional speaker connected to the evacuation guiding operating system in the direction of the smart device, Using the sound signal of the inaudible non-audible frequency band of 10 kHz to 300 GHz and receiving the disaster location and disaster information of the disaster area and the evacuation guidance route with the non-audible signal as a smart device installed with an evacuation guidance app ; And
And a step of informing the emergency evacuation route by displaying the LED illumination light in the direction of the safe entrance in case of a disaster by the LED lighting control controller connected to the evacuation guiding operating system and a plurality of LED illumination systems installed in each area.

delete

The sensor network and the directional speaker using the sensor network and the directional speaker according to the present invention analyze the present situation and cause of the social disaster and improve the disaster response ability by using the gas, fire detection sensor network, the evacuation induction directional speaker, The lighting system is constructed, the evacuation guidance algorithm is applied to emergency evacuation through the early warning and disaster situation propagation system using the directional speaker in the disaster area where the indoor gas explosion and fire occur, and it is immediately output to the directional acoustic system, It is effective to evacuate quickly in the disaster area by evacuating quickly by displaying it as LED light.

"The project to develop a system to protect people using directional loudspeakers based on fusion and hybrid technology to cope with social disasters" can be a strategic means to effectively manage and control diversified social disasters in recent years.

Through the careful analysis of social disasters and the appropriate combination of ICT technologies, individual citizens are provided with services for protection of lives directly. Nationally, overall loss of lives is reduced and social loss costs can be reduced.

At present, the biggest problem of social disaster response in Korea is the increase of disaster blindness due to the widening gap between central and local, urban and rural disaster response capabilities and social structure such as low fertility / aging. It is anticipated that it will be effective to prevent social disaster at low cost.

The R & D achievements can be applied not only to the social disaster management model of the local governments but also to the economical effect to foster the national safety industry by exporting the systems and technologies developed overseas.

1 is a perspective view of a conventional top-down escape ladder system for emergency evacuation.
FIG. 2 is a conceptual diagram showing the necessity of research on evacuation induction technology using directional loudspeakers and emergency lighting, which provide voice guidance on a evacuation route in the event of a disaster such as a gas explosion, a fire, or a flood disaster.
Fig. 3 is a schematic diagram of a directional loudspeaker system in which a sensor network and an evacuation guidance system using directional loudspeakers in a disaster situation, including a radial angle adjustment, a sound source reaching distance adjustment, an AVC adjustment technology, an audible sound transmission technology, FIG.
4 is a diagram showing a research objective of a variable output directional speaker system.
5 is a conceptual diagram of an evacuation guidance system using a navigation APP technique for evacuation guidance using a multi-frequency directional speaker for evacuation guidance capable of adjusting the variable output / emission angle in a disaster.
Fig. 6 is a diagram showing development goals and characteristics of a directional speaker.
Fig. 7 is a diagram showing development targets of a fixed type, vehicle type, and drone type directional speaker.
8A is a conceptual diagram of a disaster situation awareness through a video and sensor network.
FIG. 8B is a view showing an example of a directional speaker evacuation induction technique, an audible / non-audible frequency evacuation inducing technique, an entrance / exit audiovisual evacuation technique, and the like by detecting a disaster situation through image tracking of an IoT sensor and a camera in an evacuation guidance system interlocked with an IoT sensor, FIG. 1 is a diagram illustrating a concept of a system for providing LED lighting control technology for leading a vehicle to a vehicle, and analyzing big data of a catastrophic accident type.
FIG. 9 is a block diagram showing an example of a configuration of an IoT sensor node including an IoT sensor node including a gas sensor for detecting a disaster situation, a fire detection sensor, and a sensor for measuring a water level, (MOBIUS server) which is a cloud server on the cloud server, and it drives the lamp of the central disaster control center, the directional speaker and the lighting control controller and the LED lighting system to evacuate the disaster area, This is a conceptual diagram of a system using an evacuation induction app.
Fig. 10A is a diagram showing the configuration of an evacuation guidance system using a sensor network, a directional speaker, and an LED illumination system according to the present invention.
FIG. 10B is a view of the evacuation guidance system to which the sensor network, the directional speaker, the LED lighting system, and the evacuation guidance algorithm are applied.
FIG. 10C is a view showing an evacuation guidance system using an audible / non-audible signal, a disaster information acquisition through a sensor, an LED illumination, a directional speaker utilization, a dispersion evacuation algorithm study, and the like.
10D is a flowchart showing an evacuation inducing algorithm.
FIG. 10E is a diagram showing operations of prevention, disaster occurrence, response, and recovery using the sensor and the CCTV system.
11A is a diagram illustrating an IDS (Directional Speaker, Seamless Tracking) system to which a directional speaker is applied.
11B is an evacuation guidance system configuration for transmitting an evacuation guidance app (App) of the smart device and an audible signal / non-audible frequency signal.
12A and 12B are diagrams for explaining a case where a wireless sensor network (MANET, Zigbee, BLE, Wi-Fi) using a sensor in the indoor or subway history and a gateway in a disaster situation such as gas explosion or fire according to the first embodiment of the present invention It is evacuation guidance (indoor, subway history) using a central control system that is connected to an evacuation guidance operating system (Mobius server), a directional speaker system and an LED lighting system, and is interlocked with an evacuation guidance operating system.
FIG. 12C is a schematic diagram of a wireless sensor using a rain sensor, a water level sensor, a flow rate sensor, and a sound sensor for measuring rainfall, water level, and flow velocity in a multi-public facility such as a subway station or a local river according to the second embodiment of the present invention It is equipped with an evacuation guidance operating system (Mobius server), a directional speaker system and an LED lighting system, which are connected through a network (MANET, Zigbee, BLE, Wi-Fi) and a gateway. The used evacuation example (river).
FIG. 12D is a diagram showing a directional speaker response strategy for inducing the evacuation of a passerby from a dangerous area to a safe area at the time of a flood hazard when a river water level rise, a river flood, or a flood warning is issued.
13A is an internal configuration diagram of a directional speaker.
13B is a view showing a range of radial angles of a variable output directional speaker.
14 is a block diagram of a fixed / mobile directional speaker utilizing system.
FIG. 15 is a schematic diagram of an evacuation route using a directional loudspeaker for evacuating the evacuation route together with an LED illumination system by transmitting an evanescent signal frequency from a directional loudspeaker to a smart device using evacuation induction algorithm (shortest path evacuation route search algorithm) Fig.
FIG. 16 is a view illustrating an evacuation induction technique using the non-audible signal frequency.
FIG. 17 is a diagram of a lighting control controller connected to the evacuation guidance operating system and a LED lighting control system installed in each area.
18 is a diagram showing a directional speaker-based sound source direction Android-based APP concept and characteristics test of audible / non-audible signals.
19 is a directional speaker-based Android-based APP concept, i) analyzing the strength of the received sound by the distance between the speaker and the smartphone, and ii) analyzing the strength of the received sound according to the microphone angle of the smartphone.

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

FIG. 2 is a conceptual diagram showing the necessity of research on evacuation induction technology using directional loudspeakers and emergency lighting, which provide voice guidance on a evacuation route in the event of a disaster such as a gas explosion, a fire, or a flood disaster.

Fig. 3 is a schematic diagram of a directional loudspeaker system in which a sensor network and an evacuation guidance system using directional loudspeakers in a disaster situation, including a radial angle adjustment, a sound source reaching distance adjustment, an AVC adjustment technology, an audible sound transmission technology, FIG.

4 is a diagram showing a research objective of a variable output directional speaker system.

5 is a conceptual diagram of an evacuation guidance system using a navigation APP technique for evacuation guidance using a multi-frequency directional speaker for evacuation guidance capable of adjusting the variable output / emission angle in a disaster.

Fig. 6 is a diagram showing development goals and characteristics of a directional speaker.

Fig. 7 is a diagram showing development targets of a fixed type, vehicle type, and drone type directional speaker.

This technology is applied to ICT technology for social disaster under the project of "Development of human security system using directional speakers based on fusion and hybrid technology to cope with social disasters" It was made for.

The evacuation directional acoustic system using the sensor network and the directional loudspeakers has been installed in the indoor gas and fire detection sensor network and evacuation induction directional loudspeakers and LED lighting system in order to improve the disaster response ability by analyzing the current situation and cause of social disaster. And the emergency evacuation guidance algorithm is applied to evacuate emergency gas through an early warning and disaster situation propagation system using directional loudspeaker in a disaster area where an indoor gas explosion or fire occurs, To promptly evacuate the disaster area by inducing emergency evacuation in the disaster area to reduce the casualties and maintain the safety management system.

8A is a conceptual diagram of a disaster situation awareness through a video and sensor network.

FIG. 8B is a view showing an example of a directional speaker evacuation induction technique, an audible / non-audible frequency evacuation inducing technique, an entrance / exit audiovisual evacuation technique, and the like by detecting a disaster situation through image tracking of an IoT sensor and a camera in an evacuation guidance system interlocked with an IoT sensor, FIG. 1 is a diagram illustrating a concept of a system for providing LED lighting control technology for leading a vehicle to a vehicle, and analyzing big data of a catastrophic accident type.

(1) Development of disaster situation detection and propagation technology using sensor network and directional speaker

- Development of integrated management technology of sensor network data

- Object Tracking Algorithm for Seamless Tracking, Development of Situation Recognition Technology based on Complex Combination

- Development of directional speaker with variable output / radiation angle control considering disaster scene conditions

- Development of modularization technology for light weight and miniaturization of directional speaker

- Development of disaster prevention plan through intelligent unmanned broadcasting technology

- Development of mobile control system for safe square area

- Development of evacuation route search algorithm based on sensor network

- Development of multi-directional speaker for evacuation guidance (audible / non-audible signal frequency)

- Development of LED lighting control system for evacuation guidance

- Development of evacuation induction performance app using smart device (smart phone)

(2) Development of seamless tracking system based on fusion compound sensor

- Establishment of the utilization plan of the image based on the scenario of disaster response and research on the status of technology development

- Development and advancement of Seamless Tracking technology based on IDS (IoT, Directional Speaker, Seamless Tracking)

- Risk awareness and object tracking technology using image and sensor information

- Development and enhancement of effective information acquisition and sharing technology for advanced seamless tracking technology

- Development and advancement of IDS-based control system

- Design and development of high resolution video transmission device

- Fixed / mobile remote video surveillance and disaster situation propagation technology using multiple images

- VAS (Image Analysis Server) optimization and manager S / W development

- Derivation of NDMS linkage plan

* Future Core R & D Objectives

<Development and advancement of seamless tracking technology based on IDS>

- Understand the situation, behavior, and location of objects through image analysis of various disasters, disasters, super low light, optical zoom, NIR, thermal camera

- Scenario configuration and system configuration to recognize the surrounding situation through various data collection coming through sensor network based on IoT sensor node and to notify the situation detection with the most appropriate voice output by judging the danger situation about the analyzed object situation

- Risk awareness and object tracking technology using image and sensor information

- Detecting objects in a stepwise separated danger area, and when an abnormal behavior such as falling down occurs due to a situation recognition (when a person who collects water from low water collapses in water)

- Development of key technology for seamless tracking by acquiring additional effective information and tracking fixed camera-based object tracking after capturing optical zoom image through PTZ control by grasping position information based on multiple sensor information.

- Development of object tracking technology based on multi-camera collaboration and advanced technology for seamless tracking using fusion sensor

- Development and enhancement of effective information acquisition and sharing technology for advanced seamless tracking technology

- Development of object tracking based on object motion based on image analysis and development of high speed object tracking technology by analyzing histogram characteristics of camera channel images with basic information obtained through corresponding analysis.

- Extension of the target object using the optical zoom module to acquire additional information of the enlarged target object and effective information integration technology

- Developed the same object analysis technology by sharing effective information between channels

<Development and advancement of IDS-based control system>

- Fixed / mobile remote video surveillance and disaster situation propagation technology using multiple images

- Developed multiple image sensor complex processing technology to select optimal image sensor for cameras such as ultra low light, optical zoom, NIR, thermal camera according to various situations

- Receives the high resolution video shot by the camera to the video server through the wired / wireless IP camera and real time video monitoring system

- Development of a network image storage device that recognizes dangerous area and danger situation by integrated analysis of the sensor image information through the result of image analysis of the image and peripheral sensor network, and remotely automatically instructs warning, rescue and evacuation directions according to the scenario

* Linkage with the Central Control Center of the Disaster Safety Office

- It collects incoming video signal and sensor network information from fixed and mobile image storage devices and controls it from the center and derives linkage method related to NDMS.

- map the object image information at the disaster occurrence location detected by the sensor node where the disaster occurred, and the ID of the object given through the surrounding sensor nodes (ZigBee, BLE, etc.) When the object disappears from the system, it is determined that the objects displayed on other cameras connected to the surroundings are the same object,

- Forensic search that can search through valid information (metadata) of objects stored in central control center of disaster safety situation room

- Combined with the sensor network, linkage tracking technology using image storage related system and image analysis to enhance the application in case of social disaster

4 is a diagram showing a research objective of a variable output directional speaker system.

5 is a conceptual diagram of an evacuation guidance system using a navigation APP technique for evacuation guidance using a multi-frequency directional speaker for evacuation guidance capable of adjusting the variable output / emission angle in a disaster.

Fig. 6 is a diagram showing development goals and characteristics of a directional speaker.

Conventional products consume a low power of 140dB or more sound pressure level, a maximum reaching distance of 2 to 3 km, a voice reaching distance of 100m, a radiation angle of 15 to 30 degrees, a weight of 30 to 150 kg,

The directional speaker to be developed has a sound pressure level of 120dB or less without hearing damage, 1km of maximum reachable distance (variable output), 100m voice range, ± 15 ° ~ 90 ° radiation angle, 1 ~ 10 kg weight, Power is consumed.

The directional speaker is able to adjust the sound pressure level of the step by step according to the disaster situation, the radiation angle can be controlled, the convenience of moving installation by light weight, sensor / image information use, sound pressure level below 120dB without sound damage and low power consumption.

In the future, the directional speaker is a speaker amplifier integrated AMP redesign to improve the sound pressure level output to 30dB or less sound pressure level, 750m maximum reaching distance improvement, 50m voice reaching distance improvement, up to ± 90 ° radiation angle, radiation angle automatic adjustment system, Manual control, image information and sensor linkage system, waterproof, dustproof, and vibration.

In the future, we plan to develop doron-type directional speakers.

FIG. 7 is a diagram showing development goals (Table 1) of fixed type, vehicle type, and drone type directional speakers.

Development standard \ development type        Fixed type         Vehicle type      Drone type         power AC 220 V Use generator power in the vehicle Using battery power
2.4 ~ 4.8V  Amplifier Output 500 to 1000 W 500 to 1000 W 50 W     Sound pressure level 120 dB or less 120 dB or less 90 dB or more Street
Maximum effective transmission   100m   100m   50m Longest transmission 1,000m 1,000m 100m   Radiation-oriented angle ± (15 ° to 90 °) ± (15 ° to 90 °) ± (15 ° to 90 °)       SIZE 500 x 300 x 200 500 x 300 x 200 200 x 200 x 50       weight Less than 10 kg Less than 10 kg Less than 10 kg     General Information ㆍ Integrated Speaker Amplifier
ㆍ Waterproof and dustproof design
ㆍ Variable emission angle auto output
ㆍ Correction of position of speaker connected with video sensor and voice notification ㆍ Speaker amplifier removable type
ㆍ Waterproof and dustproof design
ㆍ Variable emission angle auto output
ㆍ Automatic output of sound pressure level by disaster situation
ㆍ Correction of position of speaker connected with video sensor and voice notification ㆍ Integrated Speaker Amplifier
ㆍ Waterproof and dustproof design

FIG. 8 is a schematic diagram illustrating a method of detecting a disaster by detecting images of an IoT sensor and a camera in an evacuation guidance system coupled with an IoT sensor, a camera, and an IoT platform fused with a wireless sensor network (WSN) Technology, audible / non-audible frequency evacuation technology, and LED lighting control technology that leads to the entrance, and analyze the big data of the type of the disaster type to provide a social disaster response strategy and scenario.

FIG. 9 is a diagram showing an example of a configuration of an IoT sensor node including a gas sensor for detecting a disaster situation, a fire detection sensor, and a sensor for measuring a water level, and a LAN or wireless LAN via a wireless sensor network (WSN: MANET, 6LoWPAN) (MOBIUS server), which is a cloud server on the Internet, and provides the evacuation guidance of the disaster area by driving the lamp of the central disaster control center, the directional speaker and the lighting control controller and the LED lighting system, It is a conceptual diagram of a system that uses a smart device evacuation induction app.

The sensor is an IoT sensor node installed in each indoor area of a public facility including a subway station, and is assigned with a device ID, and includes a gas sensor, a fire sensor, a temperature sensor, a rain sensor for measuring a water hazard, At least one of a water level sensor, a flow velocity sensor, an wind speed sensor, and an acoustic sensor is used,

In the case where a disaster detection sensor is used in a local river, the IoT sensor node includes a rainfall sensor, a water level sensor, a flow velocity sensor, an wind speed sensor, and an acoustic sensor, and can measure rainfall, water level,

The sensor network uses a Zigbee sensor network or a Bluetooth communication unit is mounted on the IoT sensor node or a wireless LAN module is mounted on the IoT sensor node and information detected by the gateway is transmitted.

A wireless sensor network (WSN) can be implemented as a mesh or mobile ad-hoc communication network for transmitting information obtained from sensor nodes to an evacuation flow operating system (central control server).

Fig. 10A is a diagram showing the configuration of an evacuation guidance system using a sensor network, a directional speaker, and an LED illumination system according to the present invention.

FIG. 10B is a view of the evacuation guidance system to which the sensor network, the directional speaker, the LED lighting system, and the evacuation guidance algorithm are applied.

The evacuation guidance system provides guidance on the fire and disaster detection, identification of the disaster location of the sensor node, evacuation shortest path detection, directional speaker, guidance by LED lighting control, and evacuation technology using audible / / RTI &gt;

In addition, evacuation technology using audible / non-audible frequency signals provides voice guidance using audible bands using directional speakers and smartphone evacuation guidance apps (an Android-based app for directional speaker-based sound source direction detection) The reception of the announcement in the non-audible frequency band and the evacuation guidance are provided.

The non-audible band signal frequency uses an acoustic signal of 10 kHz to 300 GHz in the non-audible frequency band which can not be heard by the human ear.

FIG. 10C is a diagram showing an evacuation guidance system using an audible / non-audible signal, a disaster information acquisition through a sensor, an LED illumination, a directional speaker utilization, a dispersion evacuation algorithm study, and a flowchart showing an evacuation guidance algorithm.

The evacuation guidance system using the sensor network and the directional speaker and LED lighting system according to the present invention is installed in each area where a device ID is assigned and which detects gas leakage detection, fire detection, river water level, rainfall and flow velocity, A plurality of sensors (100); A sink node (110) for collecting the device ID, the gas leakage, the fire detection information, the river level, the rainfall and the flow rate, or the wind speed information from the sensors (100) And a gateway 120 receiving the gas leakage, the fire detection information, the river water level, the rainfall and the flow velocity, or the wind speed information through a wireless sensor network (WSN) and transmitting the same. And receives the device ID, the gas leakage, the fire detection information, the river water level, the rainfall and the flow rate, or the wind speed information from the gateway 120 via a LAN or a wireless LAN (Wi-Fi) , It identifies the location of the accident where the disaster was detected by the sensor node in the disaster area and classifies the accident area, the danger area, and the state area so as to evacuate through the early warning and disaster situation propagation system. The directional speaker system 190 is connected to the control unit of the directional speaker system (IDS) and the amplifier 170, which is controlled by the sound source modulation variable output, by applying an evacuation inducing algorithm to search for the shortest evacuation route, And an evacuation guidance operating system 130, which controls the LED lighting system 140 to display an entrance to the evacuation place, Flavian server); The evacuation guidance operating system 130 is interlocked with the central control system of the disaster safety situation room,
A control unit connected to the evacuation guiding operating system 130 and provided in the directional speaker system; an amplifier connected to the control unit; and a control unit for controlling the volume of the audio signal (audible signal) transmitted through the modulator by the control unit And amplifies and outputs a voice signal informing a disaster situation by controlling the longest emission distance, the radiation angle control of the directional speaker, the longest emission distance adjustment, and the radiation angle adjustment, modulates the voice signal, And a plurality of directional speakers 190 capable of varying the level of the sound level in response to the disaster situation installed in each area by the motor and the radiation angle and the pan / tilt in the range of ± (15 ° to 90 °) Directional Speaker System; And an LED lighting control controller connected to the evacuation guiding operating system 130 and indicating an evacuation route by displaying an LED illuminating light toward an exit direction in a disaster situation and a plurality of LED lighting systems 140 installed in each area .

The system is connected to the evacuation guiding operating system through a mobile communication network, and an audible signal and a non-audible signal are output from the directional speaker associated with the evacuation guiding operating system 130 in the direction of the smart device. And an evacuation guidance app (App) provided with disaster location information, disaster situation information, and evacuation guidance route information of the evacuation guidance route information,

Smart devices use smartphones and are provided with guidance reception and evacuation guidance of non-audible frequency bands through smartphone evacuation-inducing apps (Android-based evacuation-inducing apps for directional speaker-based source direction detection).

The evacuation guidance method using the sensor network and the directional speaker according to the present invention is a method of guiding evacuation by using a plurality of sensors 100 installed in each area to which a device ID is assigned and detecting gas leakage, fire detection, river water level, Transmitting the sensed information to the sink node; The sink node 110 receives the device ID, the gas leakage, the fire detection information, the river water level, the rainfall and the flow rate, or the wind speed information from the sensors 100 to the sink node 110, (110) to the gateway (120) via the wireless sensor network (WSN) with the device ID and the gas leak, the fire detection information, the river water level, the rainfall and the flow rate, or the wind speed information; The device ID and the gas leakage, the fire detection information, the river water level, the rainfall and the flow velocity, or the wind speed information are evacuated from the gateway 120 through a LAN or a Wi-Fi The system is displayed on the computer of the central control system of the disaster safety situation room connected to the evacuation guidance operating system 130 and is displayed in the disaster occurrence area, A control section provided in a directional speaker system in which a radiation angle is controlled by applying an evacuation inducing algorithm for searching for a shortest distance evacuation route except an accident area so as to evacuate through an early warning and disaster situation propagation system, A stepped sound level variable output according to a disaster situation installed in each area connected to the controlled amplifier 170 and a ± 15 ° to 90 ° ) To be output to the respective directional speakers 190 capable of controlling the pan / tilt angle, and displaying the LED lighting system 190 installed in each area informing the exit to the evacuation place; The evacuation guidance operating system 130 includes a control unit and a sound source modulation variable output control interlocked with the central control system and provided in the directional speaker system (IDS) connected to the evacuation guiding operating system 130 in case of a disaster situation The control unit controls the volume of the amplifier through the modulator and modulates the voice signal to control the longest transmission distance and the directional emission of the directional speaker 190. [ The audio signal is output by amplifying and outputting a voice signal informing the disaster situation by angle control, the longest emission distance adjustment, and the radiation angle adjustment. The motor control signal receiver connected to the control unit and the motor can adjust the radiation angle and pan / Outputting to a directional speaker; And an LED lighting control controller connected to the evacuation guiding operating system 130 and a plurality of LED lighting systems 140 installed in each area to display an LED lighting lamp in a safe entrance direction in a disaster situation to inform the evacuation route .

The evacuation guiding operating system 130 stores and manages the noise DB, the image DB, the broadcast DB, the history DB, the broadcast DB, the sound source DB, and the scenario DB, identifies the location of a disaster in the event of a disaster, A control unit provided in the directional speaker system (IDS) connected to the evacuation guiding operating system 130 via a broadcast and guided broadcasting in case of a disaster situation, A LED lighting control controller connected to the evacuation guiding operating system 130, and a plurality of LED lights (not shown) installed in each area, The system 140 displays an LED lighting lamp in the direction of the entrance in the event of a disaster, thereby guiding the evacuation route, thereby reducing the damage to persons.

FIG. 10E is a diagram showing operations of prevention, disaster occurrence, response, and recovery using the sensor and the CCTV system.

11A is a diagram illustrating an IDS (Directional Speaker, Seamless Tracking) system to which a directional speaker is applied.

The directional speaker system (IDS) is a control unit provided in a directional speaker system (IDS) connected to the evacuation guiding operating system 130 to turn on a power source when the evacuation guiding operating system 130 is in a disaster situation, And controls the longest emission distance, the emission angle control of the directional speaker 190, the longest emission distance adjustment, the emission angle, and the emission angle of the directional speaker 190, A control unit for amplifying and outputting a voice signal informing of the disaster situation by the adjustment; A motor control signal receiver coupled to the controller and a motor; And a motor control signal receiver and a motor to adjust the stepwise radiation angle of the directional speaker and adjust the step sound pressure level to output a voice signal (audible signal). Directional speaker.

11B is an evacuation guidance system configuration for transmitting an evacuation guidance app (App) of the smart device and an audible signal / non-audible signal.

An audible signal and an audible signal transmitted from the directional speaker connected to the evacuation guiding operating system 130 through a mobile communication network and interfaced with the evacuation guiding operating system 130 are output in the direction of the smart device, And a smart device installed with an evacuation guidance app (App) provided with disaster location, disaster situation information and evacuation guidance route information of the disaster area.

12A and 12B are diagrams for explaining a case where a wireless sensor network (MANET, Zigbee, BLE, Wi-Fi) using a sensor in the indoor or subway history and a gateway in a disaster situation such as gas explosion or fire according to the first embodiment of the present invention It is an evacuation guidance system (indoor and subway history) using a central control system that is connected to an evacuation guidance operating system (Mobius server), a directional speaker system and an LED lighting system, and is interlocked with an evacuation guidance operating system.

In the case of FIG. 12A, for example, referring to the directional guidance of evacuation of the directional speaker, in the case of the number 2 disaster area, the dangerous area is 1,3,6,7,8, , 11, 12, 13, 14, and 15, and other safety zones exist.

For example, when a gas explosion or a fire occurs and the second disaster area is detected by the sensor node, it is transmitted to the evacuation guidance operating system through the wireless sensor network, and the disaster situation is displayed on the computer of the central control system of the disaster safety situation room It identifies the location of the accident by checking the device ID of the sensor node in the area where the disaster occurred. After confirming the danger situation, the fire department and the emergency rescue team take action and set the control zone at the same time to classify the accident area, According to the disaster situation, the sprinkler is operated according to the control of the control center in case of a fire in the area. If the CCTV system is installed in the area, the bottleneck is recognized in the CCTV camera, the video server and the monitoring PC. Emergency Evacuation Evacuation-inducing algorithms to search for shortest-path evacuation routes outside the accident area And the voice signal is transmitted through the directional speaker with the radiation angle adjusted in each region and the LED lighting system is operated to lead the evacuation to the exit.

Directional loudspeakers combined with an evacuation guidance light (LED light) are capable of adjusting the volume and varying the level of sound level according to the disaster situation.

Emergency evacuation routes are provided through the directional loudspeakers and evacuation guidance lights in the hazardous area and the dangerous area so that the emergency evacuation route can be made to the exit points a, b, the dangerous area exit c, and the exit d, e, h, i, to provide.

FIG. 12C is a schematic diagram of a wireless sensor using a rain sensor, a water level sensor, a flow rate sensor, and a sound sensor for measuring rainfall, water level, and flow velocity in a multi-public facility such as a subway station or a local river according to the second embodiment of the present invention It is equipped with an evacuation guidance operating system (Mobius server), a directional speaker system and an LED lighting system, which are connected through a network (MANET, Zigbee, BLE, Wi-Fi) and a gateway. The used evacuation example (river).

The sensor is an IoT sensor node installed in each indoor area of a public facility including a subway station, and is assigned a device ID. The sensor ID is assigned to a gas sensor, a fire detection sensor, a rainfall sensor for measuring a disaster, a water level sensor, A sensor, and an acoustic sensor,

In a local river, when a water sensor for measuring a water hazard is used, the IoT sensor node includes a rain sensor, a water level sensor, a flow velocity sensor, an air velocity sensor, and an acoustic sensor,

The sensor network may include a ZigBee sensor network or a Bluetooth communication unit installed in the IoT sensor node or a Wi-Fi module installed in the IoT sensor node, Communication is performed.

When a ZigBee Sensor Network protocol is used, a ZigBee sensor node, a ZigBee router, and a ZigBee coordinator are connected to a gateway. In this case, the gateway uses a ZigBee protocol and a TCP / IP Protocol conversion function.

In this case, for example, the time to reach the downstream due to localized heavy rain in the upstream region, the water level to be used for the physical fusion sensor, step; Control center notification and directional speaker and seamless tracking image linkage tracking step; Four steps to expand the expected range of accidents other than accessors; And 5 stages of warning of all-around danger warning when the risk of flooding becomes high. In case of moving control and inaccessible areas, the dron with camera is put in to prepare for disaster situation.

FIG. 12D is a diagram showing a directional speaker response strategy for inducing the evacuation of a passerby from a dangerous area to a safe area at the time of a flood hazard when a river water level rise, a river flood, or a flood warning is issued.

13A is an internal configuration diagram of a directional speaker. 13B is a view showing a range of radial angles of a variable output directional speaker.

The directional speaker 190 includes a preamplifier 191 for amplifying a voice signal (audible signal); A modulator 192 for modulating the audio signal (audible signal) amplified from the preamplifier; A high pass filter (HPF) 193 for high pass filtering the modulated voice signal in a band of 40 to 200 kHz; A power amplifier output 194 for amplifying and outputting a high-pass voice signal; A radiation angle adjusting unit 195 for adjusting the radiation angle of the directional speaker installed in each area by the motor control signal receiver connected to the control unit and the motor; A radiation angle control unit (196) for adjusting the radiation angle of the directional speaker; A phase shift control unit (197) for adjusting the radiation angle phase within ± (15 ° to 90 °); An AVC control unit 198 for controlling the audio output according to the set volume; A sound source reaching distance control unit 199 for controlling a sound source reaching distance within 100 m, for example; A sound source reaching distance adjusting unit 200 for adjusting a sound source reaching distance of the speaker; And a speaker oscillation unit 201 that oscillates to output the amplified voice signal.

Since the directional speaker 190 has an advantage of effective voice transmission without howling in the room, it can accurately detect disaster situations through a sensor network, transmit visual information through sequential control of a luminaire, And the development of an evacuation direction APP using the non-audible frequency band of the cognizant, and developed an effective evacuation guidance system. The non-audible signal frequency uses the sound signal of the non-audible frequency band (10kHz ~ 300GHz) which can not be heard by the human ear.

<Development of Variable Output Directional Speaker>

- Variable Output and Variable Oriented Angle Conversion Speakers

- Variable sound pressure level and radiation angle according to the situation change

- Automatic notification according to warning scenario according to accident response and disaster situation

- Variable output level of sound level according to disaster situation

- Variable emission angle auto output

- Developed as speaker, amplifier integrated type

- Waterproof and dustproof design

- Radiation angle (radial direction angle) ± (15 ° ~ 90 °)

- Maximum effective transmission distance 100m

- Longest transmission distance 1000m

- Size: 500 x 300 x 200 mm

14 is a block diagram of a fixed / mobile directional speaker utilizing system.

In order to transmit the accurate voice information to the old oocyte in a disaster situation, it is necessary to have a technology that can adjust the sound variably in consideration of the position of the rescuer and the surrounding noise environment. Therefore, among the data of the sensor network, We will develop a variable output directional speaker that can adjust the sound pressure and radiation angle appropriately according to the change of disaster by connecting level (dB) measurement and various physical and hybrid sensors, and disaster response system using it.

Fig. 15 shows an evacuation guidance system using a directional speaker for evacuating the evacuation path together with the LED illumination system by transmitting the non-audible frequency from the directional speaker to the smart device using evacuation induction algorithm (evacuation route search algorithm) Fig.

FIG. 16 is a view illustrating an evacuation induction technique using the non-audible signal frequency.

- Development of evacuation guidance algorithm (evacuation route search algorithm) linked with sensor network

- Evacuation induction broadcasting technology development

- Evacuation induction technology using non-audible frequency signal linked with personal devices such as smartphone

17 is a block diagram of an LED lighting control system connected to an evacuation guidance operating system and an LED lighting system installed in each district.

The LED lighting system is connected to the evacuation guidance operating system and controls the LED lighting lamp installed in each area to indicate the evacuation route by displaying it on the LED lighting in the direction of safe entrance in case of disaster. And an LED lighting system installed in each area for providing illumination on the evacuation induction path by the LED lighting control controller.

LED lighting control technology can be applied to the evacuation guidance operation system (server) equipped with the evacuation induction algorithm in a situation where it is possible to recognize the initial time of the accident such as fire and gas leakage in the subway history, To increase the evacuation inducing effect of the rescuer.

To this end, the evacuation guidance operating system includes a lighting control server function for lighting control, an LED lighting control controller (luminaire interlocking type dimming board) capable of local dimming control, a relay and expansion device for data transmission, Bridge equipment, LED lighting system installed in each area, and LED lighting.

In the future, the position and the number of the stationary poles are selected considering the effective angle and the effective distance of the directional loudspeaker and the intelligent surveillance camera. In the case where the stationary poles are not in the effective range (on the water surface or the travel distance is long) It will build a mobile control system such as a drone and a car, and it will be installed and operated by maintaining additional existing sensors and equipment as much as possible.

18 is a diagram showing a directional speaker-based sound source direction Android-based APP concept and characteristics test of audible / non-audible signals.

19 is a directional speaker-based Android-based APP concept, i) analyzing the strength of the received sound by the distance between the speaker and the smartphone, and ii) analyzing the strength of the received sound according to the microphone angle of the smartphone.

The sensor network and the directional speaker using the sensor network and the directional speaker according to the present invention analyze the present situation and cause of the social disaster and improve the disaster response ability by using the gas, fire detection sensor network, the evacuation induction directional speaker, The lighting system is constructed and an evacuation guidance algorithm is applied to emergency evacuation through emergency warning and disaster situation propagation system using directional loudspeaker in a disaster area in case of explosion of indoor gas, , The evacuation site is indicated by LED, and evacuation is promptly evacuated in the disaster area so as to evacuate quickly and reduce the damage of the person and maintain the safety management system.

"The project for the development of human life protection system using directional loudspeakers based on fusion and hybrid technology to cope with social disasters" can prevent casualties by inducing emergency evacuation in the event of a disaster.

The method of the present invention can be stored in a recording medium (such as a CD-ROM, a RAM, a ROM, a memory card, a hard disk, a magneto-optical disk, a storage device, etc.) in the form of a program and readable using software of a computer .

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood that various modifications and changes may be made without departing from the scope of the present invention.

100: Sensor (gas sensor, fire detection sensor, temperature sensor)
110: Wireless sensor network (WSN, sink node)
120: gateway 130: evacuation guidance operating system
131: SOP DB 132: Sound source DB
140: LED lighting system 170: Amplifier (sound source modulation output control)
190: Directional speaker with radiation angle and pan / tilt control

Claims (12)

A plurality of sensors installed in each area to which a device ID is assigned and which detects gas leakage detection, fire detection, or river level, rainfall and flow velocity, and wind speed information;
A sink node for collecting the device ID, the gas leakage, the fire detection information, the river water level, the rainfall and the flow velocity or the wind speed information from the sensors, A gateway for receiving fire detection information, the river water level, the rainfall and flow velocity, or the wind speed information through a wireless sensor network (WSN) and transmitting the information;
Receiving the device ID, the gas leakage, the fire detection information, the river water level, the rainfall and the flow rate, or the wind speed information from the gateway through the LAN or the wireless LAN and displaying the accident location in the disaster occurrence area The evacuation guidance algorithm is applied to classify the accident area, the danger area, and the state area and to search for the shortest distance evacuation route except the accident area so as to evacuate through the early warning and disaster situation propagation system. An evacuation guidance operating system for controlling the display to be output to each directional speaker installed in each area connected to the amplifier which is controlled by the variable output control, and to be displayed as an LED lighting system informing the entrance to the evacuation place;
The refuge induction operating system is interlocked with the central control system,
The control unit of the directional speaker system adjusts the volume of the amplifier and modulates the voice signal to control the maximum emission distance, the emission angle control of the directional speaker, the longest emission distance, and the emission angle (15 ° to 90 °) range according to a disaster situation installed in each area by a motor control signal receiver and a motor connected to the control unit, A directional speaker system (IDS) having a plurality of directional speakers capable of pan / tilt adjustment; And
An LED lighting control controller connected to the evacuation guiding operating system and displaying an LED lighting light in a safe entrance direction in case of a disaster to inform the evacuation route and a plurality of LED lighting systems installed in each area,
Wherein the directional speaker comprises: a preamplifier for amplifying a voice signal; A modulator for modulating the voice signal amplified from the preamplifier; A high pass filter (HPF) for high pass filtering the modulated voice signal in a band of 40 to 200 kHz; A power amplifier output section for amplifying and outputting a high pass filtered voice signal; A radiation angle adjusting unit for adjusting a radiation angle of a directional speaker installed in each area by a motor control signal receiver connected to the control unit and a motor; A radiation angle control unit for adjusting a radiation angle of the directional speaker; A phase shift control section for adjusting the radiation angle phase in a range of ± (15 ° to 90 °); An AVC control unit for controlling the audio output according to the set volume; A sound source reaching distance controller for controlling a sound source reaching distance within a predetermined distance; A sound source reaching distance adjuster for adjusting a sound source reaching distance of the speaker; And a speaker oscillation unit oscillating to output the amplified voice signal,
And an audible signal and an audible signal are output from the directional speaker connected to the evacuation guiding operating system through a mobile communication network in the direction of the smart device. The non-audible signal causes the disaster location and the disaster Further comprising a smart device installed with an evacuation guidance app (App) provided with situation information and an evacuation guidance route,
Wherein the non-audible signal frequency of the non-audible signal uses an acoustic signal of a non-audible frequency band of 10 kHz to 300 GHz which is inaudible to the human ear. The method according to claim 1,
The smart device uses a smartphone and is provided with guidance reception and evacuation inducement in an invisible frequency band through an evacuation induction app of the smartphone (an Android-based evacuation inducing app for detecting a directional sound source based on a directional speaker) , Evacuation guidance system using sensor network and directional speaker. The method according to claim 1,
The sensor is an IoT sensor node installed in each indoor area of a public facility including a subway station, and is assigned a device ID. The sensor ID is assigned to a gas sensor, a fire sensor, a rain sensor, At least one of the acoustic sensors is used,
When a water temperature sensor for measuring the water level in a local river is used, the IoT sensor node includes a rainfall sensor, a water level sensor, a flow velocity sensor, an wind speed sensor, and an acoustic sensor, and can measure rainfall, water level, Wherein the wireless sensor network uses a Zigbee sensor network or a Bluetooth communication unit is mounted on the IoT sensor node or a wireless LAN module is mounted on the IoT sensor node. The method according to claim 1,
The directional speaker system (IDS)
A control unit provided in a directional speaker system (IDS) connected to the evacuation guiding operating system for receiving a control signal and a voice signal from the evacuation guiding operating system, A control unit for modulating a voice signal and controlling the output of a voice signal for notifying a disaster situation by controlling the longest transmission distance, the radiation angle control of the directional speaker, the longest transmission distance adjustment, and the radiation angle adjustment;
A motor control signal receiver coupled to the controller and a motor; And
A directional speaker capable of adjusting a radial angle of the directional loudspeaker of the directional speaker by the motor control signal receiver and the motor and adjusting a radial angle and a pan / tilt angle in each area for adjusting a sound pressure level in each stage to output a voice signal;
And a sensor network including the speaker and the directional speaker. delete The method according to claim 1,
The directional speaker has a sound pressure level of 120dB or less without hearing damage, a maximum reachable distance (variable output) of 1km, a sound reaching distance of 100m, a radiation angle of 15 ° to 90 °, a weight of 1 to 10 kg, Evacuation guidance system using sensor network and directional speaker. delete The method according to claim 1,
An LED lighting control controller connected to the evacuation guiding operating system and controlling an LED lighting lamp installed in each area for indicating an evacuation route by displaying the LED lighting lamp in a safe entrance direction in a disaster situation; And
An LED lighting system installed in each area for providing illumination on the evacuation induction path by the LED lighting control controller;
And a sensor network including the speaker and the directional speaker. A device ID, a device ID and gas leakage, fire detection information, river water level, rainfall and flow rate, or wind speed information from a plurality of sensors installed in each area to a sink node, Transmitting the device ID and the gas leakage, fire detection information, river water level, rainfall and flow velocity, or wind velocity information to a gateway through a wireless sensor network (WSN);
The device ID and the gas leakage, the fire detection information, the river water level, the rainfall and the flow rate, or the wind speed information are received from the gateway through a LAN or a wireless LAN (Wi-Fi) The evacuation guidance operating system identifies the accident location in the disaster occurrence area and classifies the accident area, the danger area, and the attention area, and displays the early warning and disaster state propagation system (IDS) and the amplifier which is controlled by the sound source modulation variable output by applying the evacuation induction algorithm to search the shortest distance evacuation route except the accident area to be evacuated through the emergency area Each of the sound level adjustable outputs and ± (15 ° to 90 °) radiation angles and pan / tilt adjustments Controlling to be output to the directional speaker, and controlling the LED lighting system installed in each area to inform the entrance to the evacuation place;
The evacuation guiding operating system includes a control unit of the directional speaker system (IDS) connected to the evacuation guiding operating system in interrelation with the central control system and connected to the evacuation guiding operating system, The directional loudspeaker drives the directional loudspeaker. The directional loudspeaker is capable of varying the output level, the radiation angle, and the pan / tilt of the loudspeakers according to the disaster situation. The controller adjusts the volume of the amplifier, modulates the voice signal, A voice control unit for controlling the distance control, the radiation angle control of the directional speaker, the longest emission distance control, and the radiation angle control to amplify and output a voice signal indicating a disaster situation, Outputting to a directional speaker;
Wherein the directional speaker comprises: a preamplifier for amplifying a voice signal; A modulator for modulating the voice signal amplified from the preamplifier; A high pass filter (HPF) for high pass filtering the modulated voice signal in a band of 40 to 200 kHz; A power amplifier output section for amplifying and outputting a high pass filtered voice signal; A radiation angle adjusting unit for adjusting a radiation angle of a directional speaker installed in each area by a motor control signal receiver connected to the control unit and a motor; A radiation angle control unit for adjusting a radiation angle of the directional speaker; A phase shift control section for adjusting the radiation angle phase in a range of ± (15 ° to 90 °); An AVC control unit for controlling the audio output according to the set volume; A sound source reaching distance controller for controlling a sound source reaching distance within a predetermined distance; A sound source reaching distance adjuster for adjusting a sound source reaching distance of the speaker; And a speaker oscillation unit oscillating to output the amplified voice signal,
Wherein an evanescent signal and an audible signal are output in a direction of a smart device from a directional speaker connected to the evacuation guiding operating system through a mobile communication network and the non-audible signal frequency of the non- Using the sound signal of the inaudible non-audible frequency band of 10 kHz to 300 GHz and receiving the disaster location and disaster information of the disaster area and the evacuation guidance route with the non-audible signal as a smart device installed with an evacuation guidance app ; And
Displaying an LED lighting lamp in a direction of a safe entrance in case of a disaster by an LED lighting control controller connected to the evacuation guiding operating system and a plurality of LED lighting systems installed in each area to inform an emergency evacuation route;
And a sensor network including the speaker and the directional speaker. delete delete 10. The method of claim 9,
The sensor is an IoT sensor node installed in each indoor area of a public facility including a subway station, and is assigned a device ID. The sensor ID is assigned to a gas sensor, a fire sensor, a rain sensor, At least one of the acoustic sensors is used,
When a water sensor for measuring the water level in a local stream is used, the IoT sensor node includes a rainfall sensor, a water level sensor, a flow velocity sensor, an wind speed sensor, and an acoustic sensor, and can measure rainfall, water level,
Wherein the wireless sensor network uses a Zigbee sensor network or a Bluetooth communication unit is mounted on the IoT sensor node or a wireless LAN module is mounted on the IoT sensor node, Way.

Images