KR20230121355A - 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 provides a sensing unit for sensing information for determining an emergency situation, a computing device for generating 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 receiving 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 to a safe emergency evacuation route by tagging NFC in an emergency situation.

NFC (Near Field Communication) is a communication technology for exchanging various wireless data at a close distance of less than 10 cm, and is one of radio tag (RFID) technologies, and is a non-contact communication technology using a frequency band of 13.56 MHz.

Recently, a service linking an NFC tag and a smartphone using such NFC technology has been developed, and a new model has been proposed according to data stored in the NFC tag. In relation to a method of providing a service in association with an NFC tag and a smartphone, prior art has been considerably disclosed.

However, in providing a service linking an NFC tag and a smartphone, in determining a user's location in an emergency, GPS is not activated indoors, not outdoors, so GPS cannot be used, and 3G, 4G networks or LTE networks Since positioning informs the location of a corresponding base station, an error range increases, making it impossible to accurately measure a user's location. In addition, in an emergency, visibility is limited due to power cutoff and smoke, and even if an emergency evacuation route is searched, it is impossible to accurately determine one's location. In this way, even if the 3G network or the 4G network is activated, an accurate structure cannot be made unless the user's location is accurately known.

Republic of Korea Intellectual Property Office Registration Patent No. 10-2228175 (Title of Invention: Emergency route guidance method using augmented reality and electronic device including the same)

An object 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, an object of the present invention is to provide guidance for a user to find a safer emergency passage and escape safely in an emergency situation indoors, such as inside a building where GPS is not operating.

In order to solve the above problems, the present invention includes a sensing unit for sensing information for determining an emergency situation, a computing device for generating 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 receiving the URL code from the NFC tag device.

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

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

In addition, the disaster information may include pre-divided zone information, emergency situation occurrence information for each zone, and guide information for a zone where no emergency situation has occurred.

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 on a side wall, a lens installed in the through-hole, and a driving unit for driving the lens.

In addition, in order to solve the above problems, 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 guide information for a zone where no emergency situation has occurred.

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

The present invention provides guidance on a safe emergency evacuation route when a user tags his/her terminal with NFC in an emergency situation. In particular, an object of the present invention is to provide a safer emergency route when a user is in an emergency situation indoors, such as inside a building where GPS is not operating. It has the effect of providing guidance for finding and safely escaping.

In addition, the present invention can recognize the field situation more accurately by utilizing a unique camera and algorithm, and has an effect of providing guidance for the user to find a safer emergency passage and escape safely in an emergency situation.

Effects obtainable 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.

1 shows an emergency evacuation route guidance system using NFC according to the present invention.
2 shows a sensing unit according to the present invention.
3 illustrates a computing device in accordance with the present invention.
4 shows an NFC tag device according to the present invention.
5 shows an example of an NFC tag device according to the present invention.
6 schematically shows an infrared camera according to the present invention.
7 illustrates an emergency evacuation route guidance method using NFC according to the present invention.
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 examples of the present specification and describe technical features of the present specification together with the detailed description.

Hereinafter, the embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings, but the same or similar elements are given the same reference numerals regardless of reference numerals, and redundant description thereof will be omitted.

In addition, in describing the embodiments disclosed in this specification, if it is determined that a detailed description of a related known technology may obscure the gist of the embodiment disclosed in this specification, the detailed description thereof will be omitted.

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

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

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

In this application, terms such as "comprise" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Hereinafter, based on the above 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.

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

According to FIG. 1 , an 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 for determining an emergency situation. For example, the sensing unit 100 may detect temperature information, spark generation information, toxic gas information, and the like, which are information necessary for determining a fire situation. An emergency situation according to the present invention may mean a situation in which an accident such as a disaster occurs, and the emergency situation may include a fire situation, an earthquake occurrence situation, a building collapse situation, and the like.

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

In addition, the computing device 200 may generate a URL code based on disaster information, and may control the NFC tag device 300 so that the NFC tag device 300 may display the generated URL code. Accordingly, the NFC tag device 300 according to the present invention may receive a URL code for disaster information from the computing device 200 and include the URL code.

The user terminal 400 according to the present invention may be tagged with the NFC tag device 300 and may receive a URL code from the NFC tag device 300 during tagging. The user terminal 400 may mean any computing device used by a user, and may mean a laptop, a smart phone, a tablet, a mobile phone, and the like.

In this case, the disaster information may include pre-divided zone information, emergency occurrence information for each zone, and guide information for a zone where no emergency situation has occurred.

The pre-divided zone information may refer to structure, design, and the like information about a zone inside a building or an indoor place for determining an emergency situation. For example, the pre-divided area information may include an emergency building design drawing or an image of an interior area of a building. Accordingly, when a fire breaks out in the first zone inside the building, it may be determined that the second zone and the third zone are relatively safe zones. In addition, each zone may be characterized in that it is distinguished by a firewall or the like.

The emergency occurrence information for each zone may refer to information about whether or not an emergency has occurred in each zone based on information detected by sensors installed in each zone. For example, when a fire breaks out in the first zone and the fire does not break out in the second and third zones, the emergency occurrence information for each zone may include information that a fire has broken out in the first zone. In addition, when a fire breaks out in the first zone and toxic gas is detected in the first and second zones, the emergency occurrence information for each zone may include information that toxic gas is detected in the first zone and the second zone. there is.

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

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 for each zone and may be a sensor capable of automatically detecting whether or not a flame is generated. When a flame is detected, whether a spark or a fire occurs may be determined by the computing device ( 200 in FIG. 1 ) through the duration of the flame.

The shock detection sensor 120 according to the present invention may be installed for each zone, and the degree of external shock or shaking may be detected. Therefore, 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 may be installed for each zone and may generate infrared image data toward a preset direction. Infrared image data may include different color data according to the temperature of objects in the image. Therefore, whether or not an emergency situation such as fire has occurred can be determined by the computing device ( 200 in FIG. 1 ) using the infrared image data.

The toxic gas detection sensor 140 according to the present invention may be installed for each zone, and may detect whether or not toxic gas generated by a fire exists in each zone. In this case, the toxic gas refers to a toxic gas generated by a fire, and may generally mean carbon monoxide, hydrogen cyanide, sulfurous acid gas, or the like at a preset concentration or higher.

3 illustrates a computing device in accordance with the present invention.

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

The processor 210 may execute commands stored in the memory 220 to control other components. The processor 210 may execute instructions stored in the memory 220 .

The processor 210 is a component capable of performing calculations and controlling other devices. Mainly, it may mean a central processing unit (CPU), an application processor (AP), a graphics processing unit (GPU), and the like. Also, 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 a clock signal. However, while a CPU or AP consists of a few cores optimized for serial processing, a GPU may consist of thousands of smaller and more efficient cores designed for parallel processing.

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

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

The memory 220 may be a flash memory type, a hard disk type, a solid state disk type, a silicon disk drive type, or a multimedia card micro type. ), card-type memory (eg SD or XD memory, etc.), RAM (random access memory; RAM), SRAM (static random access memory), ROM (read-only memory; ROM), EEPROM (electrically erasable programmable read -only memory), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, and an optical disk. Also, the memory 220 may include a web storage performing a storage function on the Internet.

The communication module 230 transmits and receives information with a base station or a camera having a communication function through an antenna. The communication module 230 may include a modulation unit, a demodulation unit, a signal processing unit, and the like. Also, the communication module 230 may perform a wired communication function.

Wireless communication may refer to communication using a wireless communication network using a communication facility previously installed by telecommunication companies and a frequency of the communication facility. At this time, the communication module 230 is CDMA (code division multiple access), FDMA (frequency division multiple access), TDMA (time division multiple access), OFDMA (orthogonal frequency division multiple access), SC-FDMA (single carrier frequency division multiple access), and the like, as well as the communication module 230 can also be used for 3rd generation partnership project (3GPP) long term evolution (LTE). In addition, not only 5G communication, which is currently being commercialized, but also 6G, which is scheduled to be commercialized later, can be used. However, the present specification may utilize a pre-installed communication network without being bound by such a wireless communication method.

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

Figure 4 shows an NFC tag device according to the present invention, Figure 5 shows an example of the 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 . In addition, the tag unit 310 according to the present invention may include an ID storage unit 311, a location information storage unit 312, a disaster information storage unit 313, and a transmission/reception unit 314.

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

The location information storage unit 312 according to the present invention may store information on a location where the NFC tag device 300 is installed. Since the NFC tag device 300 can be installed in each zone 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 may store the above-described disaster information. In this case, the disaster information may be received from the computing device (200 in FIG. 1) and may be received through the transceiver 314 below. Also, information generated when the user terminal 400 is tagged may be transmitted to the computing device (200 in FIG. 1) through the transceiver 314.

The transceiver 314 according to the present invention may be a component for connecting a computing device (200 in FIG. 1) and an NFC tag device 300. The transceiver 314 may transmit ID and location information to the computing device (200 in FIG. 1). In addition, the transceiver 314 may receive disaster information from the computing device (200 in FIG. 1). The transceiver 314 may transmit/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 occurs, the computing device (200 in FIG. 1) turns on at least one LED lamp 320 so that people who are evacuating can easily access the NFC tag device 300 even in an emergency. can make it recognizable. Accordingly, at least one LED device may operate with a certain brightness or higher and may operate in a prominent color such as red.

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

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

According to FIG. 6 , the infrared camera 130 according to the present invention may generate infrared image data. The camera module 1320 may include a housing including a through hole on 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 have a size corresponding to the diameter of the lens 1321 . The 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 may 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, since the camera device 100 according to the present invention needs to directly photograph the interior of a building where an emergency such as a fire occurs, a lens with strong contamination resistance is required. Accordingly, the present invention proposes a coating layer for coating a lens to solve this problem.

Preferably, the surface of the lens 1321 may be coated with a coating composition including a compound represented by Chemical Formula 1 below, an organic solvent, inorganic particles, and a dispersant.

[Formula 1]

here,

L ₁ is a single bond, a substituted or unsubstituted arylene group having 6 to 30 carbon atoms, a substituted or unsubstituted alkylene group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkylene group having 3 to 20 carbon atoms, substituted or unsubstituted 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 the L ₁ is substituted, hydrogen, a nitro group, a halogen group, a hydroxy group, an alkyl group having 1 to 30 carbon atoms, a cycloalkyl group having 1 to 20 carbon atoms, an alkenyl group having 2 to 30 carbon atoms, an alkynyl group having 2 to 24 carbon atoms, and a carbon number It is substituted with one or more substituents selected from the group consisting of an aralkyl group having 7 to 30 carbon atoms, an aryl group having 6 to 30 carbon atoms, and an alkoxy group having 1 to 30 carbon atoms, and when substituted with a plurality of substituents, they are the same as or different from each other.

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

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 forming the coating layer 1322 on the surface of the lens 1321, the inorganic particles may improve physical strength and maintain viscosity within a certain range to increase moldability.

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

As the dispersing agent, a polyester-based dispersing agent may be used, and specifically, TEGO-Disperse 670 (manufacturer : EVONIK) can be used, but it is not limited to the above examples, and all dispersants 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 a UV absorber, an antioxidant, and the like, but is not limited to the above examples and may be used without limitation.

A coating composition for forming the coating layer 1322 may include, more specifically, the compound represented by Chemical 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 Chemical 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. In the case of the above range, a synergistic effect is expressed to the extent that the water repellency effect due to the interaction of each component is of critical significance, and when it is out of the above range, the synergistic effect is rapidly reduced or almost nonexistent.

More preferably, the viscosity of the coating composition is 1500 to 1800 cP, and when the viscosity is less than 1500 cP, when applied to the surface of the lens 1321, there is a problem that it is not easy to form the coating layer 1322 because it flows down, and the coating composition exceeds 1800 cP. 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 a compound represented by Formula 1, inorganic particles, and a dispersant in methyl ethyl ketone:

[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 parts)

2. Preparation of coating layer

A coating layer 1322 was formed by applying the coating composition of DX1 to DX5 on one surface of the lens 1321 and then curing the coating composition.

[Experimental Example]

1. Evaluation of surface appearance

Due to the difference in viscosity of the coating composition, after the coating layer 1322 was prepared, a sensory evaluation was performed on whether a uniform surface was formed. Evaluation was conducted on whether or not a uniform coating layer 1322 was formed, and the evaluation was conducted according to the following criteria.

○: uniform coating layer formation

×: Formation of non-uniform 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 amount, flow occurs on the surface of the lens 1321, and it is difficult to form a uniform coating layer 1322 after the curing process in many cases. Accordingly, a problem of lowering the production yield may occur. In addition, even when the viscosity is too high, it is difficult to uniformly apply the composition and it is 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 (〃) Static 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 the coating layer 1322 was formed using the coating compositions of TX1 to TX5, the result of measuring the contact angle was confirmed. TX1 and TX5 measured receding contact angles less than 10 degrees. That is, it was confirmed that a phenomenon in which water droplets are pinned occurs when the coating composition is out of the optimal range for preparing the coating composition. On the other hand, it was confirmed that the pinning phenomenon did not occur in TX2 to 4, indicating that excellent waterproofing effect could be exhibited.

3. Fouling resistance evaluation

A lens 1321 formed with the coating layer 1322 according to the above embodiment is attached to a model camera in an indoor space and installed on top of a burning 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, the model camera was attached to the same location inside the building.

After that, the degree of contamination of the lens 1321 before and after the experiment was evaluated, and for objective comparison, the result was compared with the comparative example in which the coating layer 1322 was not formed, and the result was evaluated by an index of 1 to 10, and Table 4 below shown in In the index below, the lower the number, the better the stain resistance.

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

(Unit: index)

Referring to Table 4, in the case of 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 fouling resistance can be easily analyzed 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.

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

According to FIG. 7 , in the emergency evacuation route guidance method using NFC according to the present invention, the step of receiving sensing information for determining an emergency situation (S1100), and the step of 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 an NFC tag device (S1400).

Receiving sensing information for determining an emergency situation (S1100) is a step of receiving the information detected by the above-described sensing unit, and generating disaster information based on the received sensing information (S1200) is the detected information It may be a step of generating information on whether or not 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 the ultraviolet image data generated by the ultraviolet camera, and based on the ultraviolet image data A method for detecting whether a fire situation has occurred may 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) for pre-learning ultraviolet image data in a fire situation, and inputting current ultraviolet image data based on the learned result value to determine whether or not a fire has occurred. results can be derived.

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

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

According to FIG. 8, the types and functions of filters are shown. That is, the CNN algorithm may be a learning algorithm using a plurality of layers. In addition, the CNN algorithm can automatically learn a filter that maximizes image classification accuracy, and by adding a new layer called a convolutional layer and a polling layer before the fully connected layer, after applying the filtering technique to the original image, the filtered 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. can

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

[Equation 1]

(step,

: pixels in the i-th row and j-th column of the filtered image expressed as a matrix,

: filter,

: image,

: height of the filter (number of rows),

: The width of the filter (number of columns). )

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

[Equation 2]

(step,

: pixels in the i-th row and j-th column of the filtered image expressed as a matrix,

: Application filter

: image,

: height of application filter (number of rows),

: The width (number of columns) of the application filter.)

Preferably, As an application filter, may be a filter applied to the image data in order to learn infrared image data and recognize whether a fire has occurred in the image data. In particular, in the case of recognition of whether a fire has occurred, since it can be classified based on differences in shape and color, an application filter for effectively recognizing shape and color may be required. Application filters to meet these needs Can be calculated by Equation 3 below.

[Equation 3]

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

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

Preferably, The operation expression for obtaining is as shown in 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 (diameter) of the lens of the infrared camera used to take the image is in mm, The value may be obtained by obtaining a ratio by obtaining an average value of temperature (K) photographed by infrared rays inside one frame and a temperature change amount (K), and multiplying the average value for a time period of 0 to T by the f-value of the lens. In this case, T may mean the total time (s, seconds) during which the corresponding infrared image data was captured.

[Experimental Example 2]

Regarding the infrared image data according to the present invention, when the application filter F' of the present invention is applied, the recognition accuracy of whether or not a fire has occurred is as follows. The table below shows the accuracy of the recognition result as a numerical value, depending on whether a filter is applied or not, commissioned by 10 experts in the relevant technical field.

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

Table 5 shows the scores for accuracy evaluated by experts for each case. In this experimental example, the accuracy of the learning module pre-learned through big data was investigated according to whether or not a filter was applied.

In addition, this experimental example was experimented with infrared image data taken inside a building by 120 dogs, and a survey was conducted by 10 experts on the accuracy of recognizing whether or not a fire occurred included in the image data with respect to the recognition result value.

As can be seen in Table 5, when the filter is not applied, there is a probability of error in image recognition, and the evaluation is relatively low accuracy. In contrast, the accuracy was slightly higher when the general CNN filter F was applied, but it was confirmed that the accuracy was remarkably improved when the applied filter F' was applied.

The above-described present invention can be modeled as a computer readable code on a medium on which a program is recorded. The computer-readable medium includes all types of recording devices in which data readable by a computer system is stored. Examples of computer-readable media include Hard Disk Drive (HDD), Solid State Disk (SSD), Silicon Disk Drive (SDD), ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, etc. , and also includes those modeled in the form of carrier waves (eg, transmission over the Internet). Accordingly, the above detailed description should not be construed as limiting 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 mutually exclusive or distinct. Certain or other embodiments of the present invention described above may be used in combination or combination of respective configurations or functions.

The above detailed description should not be construed as limiting in all respects 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 for determining an emergency situation;
a computing device generating disaster information based on the information;
an NFC tag device including a URL code for the disaster information from the computing device; and
A user terminal receiving the URL code from the NFC tag device; including,
Emergency evacuation route guidance system using NFC.
According to claim 1,
The NFC tag device,
a tag unit including a communication circuit for short-range wireless communication; and
At least one LED lamp installed around the tag portion;
Emergency evacuation route guidance system using NFC.
According to claim 2,
The computing device,
Controlling the at least one LED lamp based on the disaster information,
Emergency evacuation route guidance system using NFC.
According to claim 1,
The disaster information,
Including pre-divided zone information, emergency occurrence information for each zone, and guidance information for areas where no emergency situation has occurred,
Emergency evacuation route guidance system using NFC.
According to claim 1,
The sensing unit,
Including 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
To include; a driving unit for driving the lens;
Emergency evacuation route guidance system using NFC.
Receiving sensing information for determining an emergency situation;
generating disaster information based on the sensing information;
generating a URL code for the disaster information; and
Transmitting the URL code to an NFC tag device; including,
The disaster information,
To include pre-divided zone information, emergency occurrence information for each zone, and guidance information for areas where no emergency situation has occurred,
Emergency evacuation route guidance method using NFC.
A non-transitory computer readable medium storing instructions,
The instructions, when executed by a processor, cause the processor to perform the method of claim 6.