KR102669369B1 - System and method of evacuation route guidance for emergency using nfc - Google Patents

Abstract

An emergency evacuation route guidance system and method using NFC are disclosed. The present invention includes a sensing unit that senses information for determining an emergency situation, a computing device that generates disaster information based on the information, an NFC tag device including a URL code for the disaster information from the computing device, and the NFC tag. It may include a user terminal that receives the URL code from the device.

Description

Emergency evacuation route guidance system and method using NFC {SYSTEM AND METHOD OF EVACUATION ROUTE GUIDANCE FOR EMERGENCY USING NFC}

The present invention relates to an emergency evacuation route guidance system and method using NFC. More specifically, it relates to a system and method for providing guidance on a safe emergency evacuation route by tagging NFC in an emergency situation.

NFC (Near Field Communication) is a communication technology that exchanges various wireless data at a close distance of less than 10 cm. It is one of the wireless tag (RFID) technologies and is a non-contact communication technology that uses the frequency band of 13.56 MHz.

Recently, services linking NFC tags and smartphones using NFC technology are being developed, and new models are being proposed based on data stored in the NFC tag. Regarding a method of providing a service linking an NFC tag and a smartphone, many prior technologies have been disclosed.

However, in providing a service linking an NFC tag and a smartphone, when determining the user's location in an emergency, GPS cannot be used because it is not activated indoors instead of outdoors, and it cannot be used through 3G, 4G networks, LTE networks, etc. Since positioning informs the location of the base station, the margin of error increases, making it impossible to measure the user's exact location. Additionally, in an emergency, visibility is limited due to power cuts and smoke, and even if you find an emergency escape route, you cannot accurately determine your location. In this way, even if the 3G network or 4G network was activated, an accurate structure could not be established if one's location was not accurately known.

Republic of Korea Patent Office Registered Patent Publication No. 10-2228175 (Title of invention: Emergency route guidance method using augmented reality and electronic device including the same)

The purpose of the present invention is to provide guidance on a safe emergency evacuation route when a user tags his/her terminal with NFC in an emergency situation.

In addition, the purpose of the present invention is to provide guidance so that users can find a safer emergency route and escape safely in an emergency situation indoors, such as inside a building where GPS is not working.

In order to solve the above-mentioned problems, the present invention includes a sensing unit that senses information for determining an emergency situation, a computing device that generates disaster information based on the information, and a URL code for the disaster information from the computing device. It may include an NFC tag device and a user terminal that receives the URL code from the NFC tag device.

Additionally, the NFC tag device may include a tag unit including a communication circuit for short-distance wireless communication and at least one LED lamp installed around the tag unit.

Additionally, the computing device may control the at least one LED lamp based on the disaster information.

Additionally, the disaster information may include pre-divided zone information, emergency situation occurrence information for each zone, and guidance information for zones in which no emergency situation has occurred.

Additionally, the sensing unit may include an infrared camera for photographing a predetermined point, and the infrared camera may include a housing including a through hole in a side wall, a lens installed in the through hole, and a driving unit that drives the lens.

In addition, in order to solve the above-described problem, the present invention includes the steps of receiving sensing information for determining an emergency situation, generating disaster information based on the sensing information, and generating a URL code for the disaster information. and transmitting the URL code to an NFC tag device, wherein the disaster information may include pre-divided zone information, emergency situation occurrence information for each zone, and guidance information for zones where no emergency situation has occurred.

In addition, in order to solve the above-described problem, the present invention provides a non-transitory computer-readable medium storing instructions, which, when executed by a processor, cause the processor to perform the above-described method. It may be a possible medium.

The present invention provides guidance on a safe emergency evacuation route when a user tags his or her terminal with NFC in an emergency situation. In particular, the purpose is to provide a safer emergency evacuation route in an emergency situation indoors, such as inside a building where GPS does not work. It has the effect of providing guidance to find and escape safely.

In addition, the present invention utilizes a unique camera and algorithm to more accurately recognize on-site situations, which has the effect of providing guidance for users to find a safer emergency route and escape safely in an emergency situation.

The effects that can be obtained according to the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description below. will be.

Figure 1 shows an emergency evacuation route guidance system using NFC according to the present invention.
Figure 2 shows a sensing unit according to the present invention.
Figure 3 shows a computing device according to the present invention.
Figure 4 shows an NFC tag device according to the present invention.
Figure 5 shows an example of an NFC tag device according to the present invention.
Figure 6 schematically shows an infrared camera according to the present invention.
Figure 7 shows an emergency evacuation route guidance method using NFC according to the present invention.
Figure 8 is a diagram showing an example of an image correction filter according to the present invention.
The accompanying drawings, which are included as part of the detailed description to aid understanding of the present specification, provide embodiments of the present specification and explain technical features of the present specification together with the detailed description.

Hereinafter, embodiments disclosed in the present specification will be described in detail with reference to the attached drawings. However, identical or similar components will be assigned the same reference numbers regardless of reference numerals, and duplicate descriptions thereof will be omitted.

Additionally, in describing the embodiments disclosed in this specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed descriptions will be omitted.

In addition, the attached drawings are only for easy understanding of the embodiments disclosed in this specification, and the technical idea disclosed in this specification is not limited by the attached drawings, and all changes included in the spirit and technical scope of the present invention are not limited. , should be understood to include equivalents or substitutes.

Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

Singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Hereinafter, based on the above-described contents, an emergency evacuation route guidance system and method using NFC according to a preferred embodiment of the present specification will be described in detail as follows.

Figure 1 shows an emergency evacuation route guidance system using NFC according to the present invention.

According to FIG. 1, the emergency evacuation route guidance system using NFC according to the present invention may include a sensing unit 100, a computing device 200, an NFC tag device 300, and a user terminal 400.

The sensing unit 100 according to the present invention can detect information necessary to determine an emergency situation. For example, the sensing unit 100 may detect temperature information, flame generation information, toxic gas information, etc., which are information necessary to determine a fire situation. An emergency situation according to the present invention may mean a situation where an accident such as a disaster occurs, and the emergency situation may include a fire situation, an earthquake situation, a building collapse situation, etc.

The computing device 200 according to the present invention may receive information necessary to determine an emergency situation from the sensing unit 100 and generate disaster information based on the received information. Disaster information is the result of determining whether an emergency situation has occurred, and may include different information depending on the type of emergency situation.

Additionally, the computing device 200 may generate a URL code based on disaster information and control the NFC tag device 300 to display the generated URL code. Therefore, the NFC tag device 300 according to the present invention can receive a URL code for disaster information from the computing device 200 and embed the URL code.

The user terminal 400 according to the present invention can be tagged with the NFC tag device 300, and can receive a URL code from the NFC tag device 300 when tagged. The user terminal 400 may refer to any computing device used by a user, such as a laptop, smartphone, tablet, or mobile phone.

At this time, the disaster information may include pre-divided zone information, emergency situation occurrence information for each zone, and guidance information for zones in which no emergency situation has occurred.

Pre-divided area information may refer to information on structure, design, etc. about areas inside a building or indoor location for determining an emergency situation. As an example, the pre-divided area information may include an emergency building design drawing or an image of an area inside the building. Therefore, if a fire occurs in the first zone inside the building, the second zone and third zone can be determined to be relatively safe zones. Additionally, each zone may be distinguished by a firewall, etc.

Emergency situation occurrence information for each zone may refer to information on whether an emergency situation has occurred within each zone based on information detected from sensors installed in each zone. For example, if a fire occurs in the first zone and no fire occurs in the second or third zones, emergency situation occurrence information for each zone may include information that a fire occurred in the first zone. Additionally, if a fire breaks out in the first zone and toxic gas is detected in the first and second zones, emergency situation information for each zone may include information that toxic gas was detected in the first and second zones. there is.

Guidance information about areas where an emergency situation has not occurred may mean information about whether an emergency situation has occurred within each area. For example, when a fire breaks out in the first zone, guidance information about zones where no emergency situation has occurred may include information that no fire has occurred in the second zone and third zone. Additionally, if a fire breaks out in Zone 1 and toxic gases are detected in Zones 1 and 2, guidance information for zones where no emergency has occurred will include information that no toxic gases have been detected in Zone 3. can do.

Figure 2 shows a sensing unit according to the present invention.

According to FIG. 2, the sensing unit 100 according to the present invention may include at least one of a flame detection sensor 110, an impact detection sensor 120, an infrared camera 130, and a toxic gas detection sensor 140. .

The flame detection sensor 110 according to the present invention may be installed in each zone and may be a sensor that can automatically detect whether a flame has occurred. When a flame is detected, whether a spark or a fire has occurred can be determined by the computing device (200 in FIG. 1) based on the duration of the flame.

The shock detection sensor 120 according to the present invention can be installed in each zone, and can detect the degree of external shock or shaking. Accordingly, whether a disaster situation such as an earthquake has occurred can be determined by the computing device (200 in FIG. 1).

The infrared camera 130 according to the present invention can be installed in each zone and can generate infrared image data toward a preset direction. Infrared image data may include different color data depending on the temperature of objects in the image. Therefore, whether an emergency situation, such as a fire, has occurred can be determined by the computing device (200 in FIG. 1) using infrared image data.

The toxic gas detection sensor 140 according to the present invention can be installed in each zone and can detect whether toxic gas generated by a fire exists in each zone. At this time, toxic gas refers to toxic gas generated by a fire, and may generally refer to carbon monoxide, hydrogen cyanide, sulfur dioxide, etc. at a concentration higher than a preset level.

Figure 3 shows a computing device according to the present invention.

According to FIG. 3, the computing device 200 according to the present invention may include a processor, memory, and communication module.

The processor 210 may control other components by executing instructions stored in the memory 220. The processor 210 may execute instructions stored in the memory 220.

The processor 210 is a component that can perform calculations and control other devices. Mainly, it may mean a central processing unit (CPU), an application processor (AP), a graphics processing unit (GPU), etc. Additionally, the CPU, AP, or GPU may include one or more cores therein, and the CPU, AP, or GPU may operate using an operating voltage and clock signal. However, while a CPU or AP consists of a few cores optimized for serial processing, a GPU can consist of thousands of smaller, more efficient cores designed for parallel processing.

The processor 210 can provide or process appropriate information or functions to the user by processing signals, data, information, etc. input or output through the components discussed above, or by running an application program stored in the memory 220.

The memory 220 stores data that supports various functions of the computing device 200. The memory 220 may store a plurality of application programs (application programs or applications) running on the computing device 200, data for operating the computing device 200, and commands. At least some of these applications may be downloaded from an external server via wireless communication. Additionally, the application program may be stored in the memory 220, installed on the computing device 200, and driven by the processor 210 to perform an operation (or function) of the computing device 200.

The memory 220 is a flash memory type, a hard disk type, a solid state disk type, an SDD type (Silicon Disk Drive type), and a multimedia card micro type. ), card-type memory (e.g. SD or XD memory, etc.), random access memory (RAM), static random access memory (SRAM), read-only memory (ROM), EEPROM (electrically erasable programmable read) -only memory), PROM (programmable read-only memory), magnetic memory, magnetic disk, and optical disk may include at least one type of storage medium. Additionally, the memory 220 may include web storage that performs a storage function on the Internet.

The communication module 230 transmits and receives information to and from a base station or a camera including a communication function through an antenna. The communication module 230 may include a modulator, demodulator, signal processor, etc. Additionally, the communication module 230 may perform a wired communication function.

Wireless communication refers to communication using communication facilities already installed by communication companies and a wireless communication network that uses the frequencies of those communication facilities. At this time, the communication module 230 includes code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), and single carrier frequency division multiple access (SC-FDMA). It can be used in various wireless communication systems such as access), and in addition, the communication module 230 can also be used in 3rd generation partnership project (3GPP) long term evolution (LTE), etc. In addition, not only 5G communication, which has recently been commercialized, but also 6G, which is scheduled for commercialization in the future, can be used. However, this specification can utilize a pre-installed communication network without being limited to such wireless communication method.

In addition, short range communication technologies include Bluetooth, BLE (Bluetooth Low Energy), Beacon, RFID (Radio Frequency Identification), NFC (Near Field Communication), and Infrared Data Association (IrDA). ), UWB (Ultra Wideband), ZigBee, etc. may be used.

Figure 4 shows an NFC tag device according to the present invention, and Figure 5 shows an example of an NFC tag device according to the present invention.

According to FIG. 4, the NFC tag device 300 according to the present invention may include a tag unit 310 and at least one LED lamp 320. Additionally, the tag unit 310 according to the present invention may include an ID storage unit 311, a location information storage unit 312, an emergency information storage unit 313, and a transmitting/receiving unit 314.

The ID storage unit 311 according to the present invention can store an ID for distinguishing the NFC tag device 300. Since the NFC tag device 300 can be installed in each area inside the building, each NFC tag device 300 can be distinguished through a unique ID.

The location information storage unit 312 according to the present invention can store information about the location where the NFC tag device 300 is installed. Since the NFC tag device 300 can be installed in each area inside the building, the location of the NFC tag device 300 can be distinguished through location information, and each NFC tag device 300 can be identified through location information and a unique ID. can be distinguished.

The disaster information storage unit 313 according to the present invention can store the above-described disaster information. At this time, disaster information can be received from the computing device (200 in FIG. 1) and can be received through the transmitting and receiving unit 314 below. Additionally, information generated during tagging of the user terminal 400 may be transmitted to the computing device (200 in FIG. 1) through the transceiver 314.

The transmitting and receiving unit 314 according to the present invention may be configured to connect a computing device (200 in FIG. 1) and the NFC tag device 300. The transceiver 314 may transmit ID and location information to the computing device (200 in FIG. 1). Additionally, the transceiver 314 may receive disaster information from the computing device (200 in FIG. 1). The transceiver unit 314 may transmit and receive information with the computing device (200 in FIG. 1) using wired or wireless communication.

At least one LED lamp 320 according to the present invention is controlled by a computing device (200 in FIG. 1) and may be installed around the tag unit 310. The computing device 200 in FIG. 1 may control at least one LED lamp 320 based on disaster information. For example, when an emergency situation occurs, the computing device (200 in FIG. 1) turns on at least one LED lamp 320 so that people evacuating can easily use the NFC tag device 300 even in an emergency situation. You can make it recognizable. Accordingly, at least one LED device operates at a brightness level above a certain level and may operate in a highly visible color such as red.

According to Figure 5, the NFC tag device 300 according to the present invention can be installed in each zone, can be clearly visible in an emergency situation through the LED lamp 320, and can tag the user terminal 400. Guidance text may be displayed.

Figure 6 schematically shows an infrared camera according to the present invention.

According to FIG. 6, the infrared camera 130 according to the present invention can generate infrared image data. The camera module 1320 may include a housing including a through hole in a side wall, a lens 1321 installed in the through hole, and a driving unit 1323 that drives the lens 1321. The through hole may be formed in a size corresponding to the diameter of the lens 1321. Lens 1321 may be inserted into the through hole.

The driving unit 1323 may be configured to control the lens 1321 to move forward or backward. The lens 1321 and the driving unit 1323 are connected in a conventionally known manner, and the lens 1321 can be controlled by the driving unit 1323 in a conventionally known manner.

In order to obtain various infrared image data, the lens 1321 needs to be exposed to the outside of the camera device 100 or the housing.

In particular, the camera device 100 according to the present invention requires a lens with strong contamination resistance because it must directly photograph the interior of a building where an emergency situation such as a fire occurs. Therefore, the present invention sought to solve this problem by proposing a coating layer for coating the lens.

Preferably, the surface of the lens 1321 may be coated with a coating composition containing a compound represented by the following formula (1), an organic solvent, an inorganic particle, and a dispersant.

[Formula 1]

here,

L ₁ is a single bond, a substituted or unsubstituted arylene group with 6 to 30 carbon atoms, a substituted or unsubstituted alkylene group with 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkylene group with 3 to 20 carbon atoms, or a substituted or unsubstituted group. It is selected from the group consisting of an alkenylene group having 2 to 20 carbon atoms, a substituted or unsubstituted cycloalkenylene group having 3 to 20 carbon atoms, and a substituted or unsubstituted alkynylene group having 2 to 20 carbon atoms,

When L ₁ is substituted, hydrogen, nitro group, halogen group, hydroxy group, alkyl group of 1 to 30 carbon atoms, cycloalkyl group of 1 to 20 carbon atoms, alkenyl group of 2 to 30 carbon atoms, alkynyl group of 2 to 24 carbon atoms, carbon number It is substituted with one or more substituents selected from the group consisting of an aralkyl group with 7 to 30 carbon atoms, an aryl group with 6 to 30 carbon atoms, and an alkoxy group with 1 to 30 carbon atoms. When substituted with a plurality of substituents, they are the same or different from each other.

When the lens 1321 is coated with the coating composition, it can exhibit excellent water repellency and contamination resistance, so that clearer images or videos can be collected even if the lens 1321 installed around the road is exposed to a polluted environment for a long period of time.

The inorganic particles may be selected from the group consisting of silica, alumina, and mixtures thereof. The average diameter of the inorganic particles is 70 to 100 μm, but is not limited to the above examples. After the inorganic particles are formed as a coating layer 1322 on the surface of the lens 1321, the physical strength can be improved and the moldability can be improved by maintaining the viscosity within a certain range.

The organic solvent is selected from the group consisting of methyl ethyl ketone (MEK), toluene, and mixtures thereof, preferably methyl ethyl ketone, but is not limited to the above examples.

As the dispersant, a polyester-based dispersant can be used. Specifically, a polyester-based dispersion stabilizer consisting of a copolymer of 2-methoxypropyl acetate and 1-methoxy-2-propyl acetate is TEGO-Disperse 670 (manufacturer) : EVONIK) can be used, but is not limited to the above example and any dispersant that is obvious to those skilled in the art can be used without limitation.

The coating composition may further include a stabilizer as other additives, and the stabilizer may include an ultraviolet absorber, an antioxidant, etc., but is not limited to the above examples and can be used without limitation.

More specifically, the coating composition for forming the coating layer 1322 may include a compound represented by Formula 1, an organic solvent, inorganic particles, and a dispersant.

The coating composition may include 40 to 60 parts by weight of the compound represented by Formula 1, 20 to 40 parts by weight of inorganic particles, and 5 to 15 parts by weight of a dispersant, based on 100 parts by weight of the organic solvent. If the range is within the above range, a synergistic effect of the water repellent effect due to the interaction of each component is expressed to a critical degree, and if it is outside the above range, the synergistic effect is rapidly reduced or almost non-existent.

More preferably, the viscosity of the coating composition is 1500 to 1800 cP. If the viscosity is less than 1500 cP, there is a problem that it flows down when applied to the surface of the lens 1321, making it difficult to form the coating layer 1322, and if the viscosity is less than 1800 cP, the coating composition has a problem of flowing down. In this case, there is a problem in that it is not easy to form a uniform coating layer 1322.

[Preparation Example 1: Preparation of coating layer]

1. Preparation of coating composition

A coating composition was prepared by mixing methyl ethyl ketone with a compound represented by the following formula (1), inorganic particles, and a dispersant:

[Formula 1]

here,

L ₁ is an unsubstituted alkylene group having 5 carbon atoms.

A more specific composition of the antistatic composition is shown in Table 1 below.

TX1 TX2 TX3 TX4 TX5 organic solvent 100 100 100 100 100 Compound represented by formula 1 30 40 50 60 70 inorganic particles 10 20 30 40 50 dispersant One 5 10 15 20

(unit weight)

2. Preparation of coating layer

The coating compositions DX1 to DX5 were applied to one surface of the lens 1321 and then cured to form a coating layer 1322.

[Experimental example]

1. Evaluation of surface appearance

Due to the difference in viscosity of the coating composition, after manufacturing the coating layer 1322, sensory evaluation was conducted to determine whether a uniform surface was formed. An evaluation was conducted on whether a uniform coating layer 1322 was formed, and the evaluation was conducted based on the following criteria.

○: Formation of uniform coating layer

×: Formation of uneven coating layer

TX1 TX2 TX3 TX4 TX5 Sensory evaluation Х ○ ○ ○ Х

When forming the coating layer 1322, if the viscosity is less than a certain level, flow occurs on the surface of the lens 1321, making it difficult to form a uniform coating layer 1322 after the curing process. Accordingly, the problem of lowering the production yield may occur. Additionally, even when the viscosity was too high, it was difficult to uniformly apply the composition, making it impossible to form a uniform coating layer 1322.

2. Measurement of water repellency angle

After forming the coating layer 1322 on the surface of the lens 1321, the results of measuring the water repellency angle are shown in Table 3 below.

Advancing contact angle (〃) Rest contact angle (〃) Receding contact angle (〃) TX1 117.1±2.9 112.1±4.1 < 10 TX2 132.4±1.5 131.5±2.7 141.7±3.4 TX3 138.9±3.0 138.9±2.7 139.8±3.7 TX4 136.9±2.0 135.6±2.6 140.4±3.4 TX5 116.9±0.7 115.4±3.0 < 10

As shown in Table 3, after forming the coating layer 1322 using the coating compositions TX1 to TX5, the results of measuring the contact angle were confirmed. TX1 and TX5 were measured to have receding contact angles of less than 10 degrees. In other words, it was confirmed that pinning of water droplets occurs when the coating composition falls outside the optimal range for manufacturing the coating composition. On the other hand, it was confirmed that no pinning phenomenon occurred in TX2 to 4, showing that excellent waterproofing effects can be achieved.

3. Contamination resistance evaluation

The lens 1321 on which the coating layer 1322 according to the above embodiment is formed is attached to a model camera in an indoor space, and installed on top of a combustible material to continuously form soot for 24 hours, so that it is directly exposed to smoke. did. As a comparative example (Con), the same lens 1321 without the coating layer 1322 was used, and in each example, a model camera was attached at the same location inside the building.

Afterwards, the degree of contamination of the lens 1321 before and after the experiment was evaluated, and for objective comparison, the results were compared with the comparative example in which the coating layer 1322 was not formed, and the results were evaluated with an index of 1 to 10, and are shown in Table 4 below. shown in As for the indices below, the lower the number, the better the contamination resistance.

Con TX1 TX2 TX3 TX4 TX5 Staining resistance 10 7 3 3 3 8

(Unit: index)

Referring to Table 4, when forming the coating layer 1322 on the lens 1321, even if the lens 1321 is exposed to the outside while installing the camera in the external environment, high contamination resistance is formed in a form that is easy to analyze for a long period of time. It can be seen that image data can be collected. In particular, in the case of TX2 to TX4, it can be confirmed that the contamination resistance by the coating layer 1322 is very excellent.

Figure 7 shows an emergency evacuation route guidance method using NFC according to the present invention. However, the subject performing the emergency evacuation route guidance method using NFC according to the present invention may be the processor of the above-described computing device (200 in FIG. 1) or the computing device (200 in FIG. 1).

According to Figure 7, the emergency evacuation route guidance method using NFC according to the present invention includes the steps of receiving sensing information for determining an emergency situation (S1100) and generating disaster information based on the received sensing information (S1200). ), generating a URL code for the generated disaster information (S1300), and transmitting the generated URL code to the NFC tag device (S1400).

The step of receiving sensing information for determining an emergency situation (S1100) is a step of receiving sensed information from the above-described sensing unit, and the step of generating disaster information based on the received sensing information (S1200) is a step of receiving sensing information based on the sensed information. This may be a step of generating information about whether an emergency situation has occurred based on the above.

In particular, the step of generating disaster information based on the received sensing information (S1200) may include detecting whether a fire situation has occurred based on infrared image data generated from an infrared camera, and based on the infrared image data, A method of detecting whether a fire situation has occurred can use an algorithm for vision recognition, which will be described later.

That is, the computing device according to the present invention may include a learning module (not shown) that learns infrared image data in advance in a fire situation, and inputs current ultraviolet image data based on the learned result to determine whether a fire has occurred. The result can be derived.

Additionally, the computing device according to the present invention can detect an emergency situation, including a fire situation, by learning an infrared image generated by an infrared camera (130 in FIG. 2), and the algorithm for vision recognition used at this time may be as follows:

Figure 8 is a diagram showing an example of an image correction filter according to the present invention.

According to Figure 8, the types and functions of filters are shown. In other words, the CNN algorithm may be a learning algorithm that uses multiple layers. In addition, the CNN algorithm can automatically learn filters that maximize image classification accuracy, and by adding new layers called convolutional layers and polling layers before the fully connected layer, the filtered image is obtained after applying the filtering technique to the original image. A classification operation can be performed on . The CNN algorithm is configured to apply a filtering technique to the original image by adding a new layer called a convolutional layer and a pooling layer before the fully-connected layer, and then perform a classification operation on the filtered image. You can.

At this time, the calculation formula for the image filter using the CNN algorithm is as shown in Equation 1 below.

[Equation 1]

(step,

: Pixel of the ith row and jth column of the filtered image expressed as a matrix,

: filter,

: image,

: Height of filter (number of rows),

: Width (number of columns) of the filter. )

Preferably, the calculation equation for the image filter using the CNN algorithm is as shown in Equation 2 below.

[Equation 2]

(step,

: Pixel of the ith row and jth column of the filtered image expressed as a matrix,

: Application filter

: image,

: height of application filter (number of rows),

: Width (number of columns) of the application filter.)

Preferably, is an application filter and may be a filter applied to the image data in order to learn infrared image data and recognize whether a fire has occurred included in the image data. In particular, in the case of recognition of whether a fire has occurred, classification may be based on differences in shape and color, so an application filter may be necessary to effectively recognize shape and color. To meet these needs, application filters Can be calculated by Equation 3 below.

[Equation 3]

(step, : filter, : Coefficient, : application filter)

At this time, each The filter according to may be any one of the edge detection filter (Edge detection), sharpen filter (sharpen), and box blur filter (Box blur) matrix according to FIG. 8. That is, the filter can be applied to infrared image data.

Preferably, The calculation formula for calculating is the same as Equation 4 below. At this time, can be interpreted as a variable used to increase the efficiency of the filter, and its unit can be ignored.

[Equation 4]

However, the diameter of the lens of the infrared camera used to capture the image is in mm, The value may be calculated by calculating the average value of the temperature (K) and the temperature change (K) captured with infrared light inside one frame, calculating the ratio, averaging this over the time period from 0 to T, and multiplying it by the lens f value. At this time, T may mean the total time (s, seconds) for which the corresponding infrared image data was captured.

[Experimental Example 2]

The recognition accuracy of whether a fire has occurred when applying the application filter F' of the present invention to the infrared image data according to the present invention is as follows. The table below is a numerical representation of the accuracy of recognition results based on whether or not filters are applied, based on requests from 10 experts in the relevant technology field.

No filter applied filter apply filter apply Average Accuracy (Score) 75 90 97

Table 5 above shows the accuracy scores evaluated by experts for each case. This experimental example investigates the accuracy of a learning module previously learned through big data, depending on whether or not a filter is applied.

In addition, this experimental example was tested with infrared image data captured inside a building with 120 animals, and a survey was conducted by 10 experts on the accuracy of recognizing whether a fire occurred included in the image data regarding the recognition results.

As can be seen in Table 5, when no filter was applied, there was a possibility that an error would occur in image recognition, so the accuracy was evaluated to be relatively low. In comparison, the accuracy was somewhat higher when the general CNN filter F was applied, but it was confirmed that the accuracy was significantly improved when the applied filter F' was applied.

The above-described present invention can be modeled as computer-readable code on a program-recorded medium. Computer-readable media includes all types of recording devices that store data that can be read by a computer system. Examples of computer-readable media include HDD (Hard Disk Drive), SSD (Solid State Disk), SDD (Silicon Disk Drive), ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc. and also includes those modeled in the form of carrier waves (e.g., transmission over the Internet). Accordingly, the above detailed description should not be construed as restrictive in all respects and should be considered illustrative. The scope of this specification should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of this specification are included in the scope of this specification.

Any or other embodiments of the present invention described above are not exclusive or distinct from each other. In certain embodiments or other embodiments of the present invention described above, each configuration or function may be used in combination or combined.

The above detailed description should not be construed as restrictive in any respect and should be considered illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention.

100: Sensing unit
200: computing device
300: NFC tag device
400: User terminal

Claims (7)

A sensing unit that senses information to determine an emergency situation;
a computing device that generates disaster information based on the information;
An NFC tag device containing a URL code for the disaster information from the computing device; and
It includes a user terminal that receives the URL code from the NFC tag device,
The sensing unit may be a flame detection sensor installed in one or more of the pre-divided areas of the pre-determined area, a shock detection sensor installed in one or more of the pre-divided areas of the pre-determined area, and any one of the pre-divided areas of the pre-determined area. It includes an infrared camera installed above and a toxic gas detection sensor installed in one or more of the predetermined areas and pre-divided areas,
The NFC tag device,
A tag unit including a communication circuit for short-distance wireless communication; and
At least one LED lamp installed around the tag unit,
The computing device is,
Includes a learning module that learns infrared image data in fire situations in advance,
The learning module derives a result of whether a fire has occurred by inputting current infrared image data based on the learned result,
The image data is subjected to an image filter using a CNN algorithm according to Equation 2 below,
Controlling the at least one LED lamp based on the disaster information,
The above disaster information is,
It includes pre-divided zone information, emergency situation information for each zone, and guidance information for zones where emergency situations do not occur.
Emergency evacuation route guidance system using NFC.
[Equation 2]

(In Equation 2, : Pixel of the i-th row and j-th column of the filtered image expressed as a matrix, F': Application filter calculated by Equation 3, X; Image, _F'H : Height (number of rows) of the application filter, _F'W : Width (number of columns) of the application filter.)
[Equation 3]

(In Equation 3, F': application filter, F: filter, ρ: coefficient calculated in Equation 4.)
[Equation 4]

(In Equation 4, T means the total time (s, seconds) for which the corresponding infrared image data was captured.) delete delete delete According to paragraph 1,
The sensing unit,
Contains an infrared camera for photographing a predetermined point,
The infrared camera,
A housing including a through hole in a side wall;
A lens installed in the through hole; and
A driving unit that drives the lens,
Emergency evacuation route guidance system using NFC.
Receiving sensing information from a sensing unit for determining an emergency situation;
Generating disaster information based on the sensing information in a computing device;
generating a URL code for the disaster information on a computing device; and
Including transmitting the URL code to an NFC tag device,
The sensing unit may be a flame detection sensor installed in one or more of the pre-divided areas of the pre-determined area, a shock detection sensor installed in one or more of the pre-divided areas of the pre-determined area, and any one of the pre-divided areas of the pre-determined area. It includes an infrared camera installed above and a toxic gas detection sensor installed in one or more of the predetermined areas and pre-divided areas,
The NFC tag device,
A tag unit including a communication circuit for short-distance wireless communication; and
At least one LED lamp installed around the tag unit,
The computing device is,
Includes a learning module that learns infrared image data in fire situations in advance,
The learning module derives a result of whether a fire has occurred by inputting current infrared image data based on the learned result,
The image data is subjected to an image filter using a CNN algorithm according to Equation 2 below,
Controlling the at least one LED lamp based on the disaster information,
The above disaster information is,
Includes pre-divided zone information, emergency situation information for each zone, and guidance information for zones where emergency situations do not occur.
Emergency evacuation route guidance method using NFC.
[Equation 2]

(In Equation 2, : Pixel of the i-th row and j-th column of the filtered image expressed as a matrix, F': Application filter calculated by Equation 3, X; Image, F' _H : Height (number of rows) of the applied filter, F' _W : Width (number of columns) of the applied filter.)
[Equation 3]

(In Equation 3, F': application filter, F: filter, ρ: coefficient calculated in Equation 4.)
[Equation 4]

(In Equation 4, T means the total time (s, seconds) for which the corresponding infrared image data was captured.) A non-transitory computer-readable medium storing instructions, comprising:
The instructions, when executed by a processor, cause the processor to perform the method of claim 6.