KR102139651B1 - System and method for controlling sex offenders access to children and youth educational facilities - Google Patents

Abstract

The present invention relates to a system for controlling access of a sexual offender to children and youth educational facilities and a method thereof, which can basically prevent physical intrusions of sexual ex-convicts into children and youth educational facilities and ensure the safety of educational facilities from the sexual ex-convicts by notifying guardians, teachers, and police of the intrusion of the sexual ex-convicts by using a smartphone terminal. According to an embodiment of the present invention, the system for controlling access of a sexual offender to children and youth educational facilities includes: a sexual offender DB that stores unique identification signals and personal information about sexual offenders; an electronic anklet worn on the sexual offender to periodically transmit GPS information and a unique RFID signal of a current location; a plurality of identification readers that receive the location and unique RFID signals from the electronic anklet to transmit the location and unique RFID signals to the outside; a plurality of video cameras for photographing the sexual offenders; a control monitoring server that receives the GPS information and the unique RFID signals from the identification reader to obtain a facial image of the sexual offender based on the GPS information, searches for personal information of the sexual offender from the sexual offender DB, sends a warning message notifying the access of the sexual offender to related terminals through a chat robot messaging system, provides personal information and the facial image of the sexual offender, or transmits a message regarding a patrol request or a rescue request to a police-related terminal in response to a patrol request or a rescue request from a related terminal; and a plurality of terminals registered in the chat robot messaging system.

Description

System and method for controlling sex offenders access to children and youth educational facilities}

The present invention relates to a system and method for access control of sex offenders in children's youth education facilities, and more specifically, to prevent physical external intrusion of sexual offenders near children's youth education facilities, guardians, resident police, facilities in facilities, etc. Access control of sex crime offenders at children's and youth education facilities, by providing warning messages using the smartphone terminal to the teachers, youth welfare department of the municipal office, the district office, and the police station in the city, thereby helping to ensure the safety of education facilities where children and teenagers reside. System and method.

In recent years, the rate of sexual crimes against children and adolescents is on the rise, and since the recidivism rate is higher than that of adult sex crimes, prevention is most important than other follow-up measures.

Sex offenders have been enacted and enforced to expose their position by wearing electronic anklets for a period of time after they are released, but since there is no way for them to be identified by guardians, the information can only be checked at certain agencies such as the police station. The situation always holds the possibility of crime.

Particularly, since the electronic anklet is hidden inside the garment, external identification is impossible, and since the sexual crime e-notifier also accesses and checks a specific application, effective preemptive response is impossible.

Korean Patent Registration No. 10-1669655 (registered on October 20, 2016) is a related prior patent document, and the document discloses a method for notifying the approach of a criminal wearing an anklet.

An object of the present invention for solving the above-mentioned problems is to receive and detect a unique identification signal from an electronic anklet of a sex offender, when a sex offender registered in the sex offender DB of the National Police Agency approaches a children's youth education facility over a certain radius, 5G communication After querying the sex offender's personal information from the relevant sex offender DB, notify the control monitoring server, the police residing in the facility (school), the teacher (representative) teacher in the facility, parents, and the juvenile welfare section of the municipality ward office, smartphone in the police station By using the KakaoTalk-based chat robot messaging system capable of interactive communication based on KakaoTalk, and when approaching a radius within 50m, zoom-in shoots the face of a sex offender through CCTV to broadcast and transmit it. To provide access control systems and methods for sex offenders of children and youth education facilities that enable access control.

In order to achieve the above object, a child crime prevention access control system for children and youth educational facilities according to an embodiment of the present invention includes: a sex offender database storing unique identification signals and personal information about a sex offender; An electronic anklet-type wireless tracking device that is mounted on a sex offender and periodically transmits GPS information and a unique identification (RFID) signal at the current location; A plurality of identification readers installed at regular intervals around the children's youth education facility and receiving the unique identification signal from the electronic anklet type wireless tracking device and transmitting it to the outside when the access of the electronic anklet type wireless tracking device is recognized; A plurality of image cameras respectively installed to correspond to the plurality of identification readers; When GPS information and a unique identification signal are received from the plurality of identification readers, facial information of a sex offender is obtained through the imager based on the GPS information, and personal information of a sex offender corresponding to the unique identification signal from the sex offender database Inquiry, and send a warning message notifying the access of the sex offender to a number of terminals registered in the chat robot messaging system capable of interactive KakaoTalk-based interactive communication, or providing personal information and facial video of the sex offender, or A control monitoring server that transmits a message regarding a patrol request or a rescue request to a police-related terminal according to a patrol request or a rescue request from the terminal; And a plurality of terminals registered in the chat robot messaging system.

In addition, the plurality of terminals, the terminal that is carried by the police residing in the child and youth education facility, the terminal carried by the teacher located within the child and youth education facility, the terminal carried by parents, the terminal carried by the juvenile welfare department of the jurisdiction of the municipality It may include a terminal carried by the police officer in charge of the police station in the building.

In addition, the control monitoring server, the identity of the sex offender corresponding to the unique identification signal received from the electronic anklet-type wireless tracking device from the sex offender database when the electronic anklet-type wireless tracking device approaches within a radius of 250 m from the child and youth educational facilities Inquiry of information, and the electronic anklet-type wireless tracking device is registered in the chat robot messaging system capable of two-way communication based on the KakaoTalk based on a warning message informing the approach of a sex offender when approaching within a radius of 200m from the child and youth educational facility Once transmitted to the terminals, the electronic anklet-type wireless tracking device registers a warning message notifying the approach of a sex offender when approaching within a 100m radius from the child and youth educational facility to the chat robot messaging system capable of interactive communication based on KakaoTalk Chat robot messaging capable of two-way communication based on the Kakao Talk, sending two times to multiple terminals, and sending an alert message informing the sexual offenders access when the electronic anklet-type wireless tracking device approaches within a radius of 50m from the child and youth educational facility It can be transmitted three times to multiple terminals registered in the system.

In addition, the monitoring server, the electronic anklet-type wireless tracking device when registering within a radius of 50m from the child and adolescent education facility alerts a warning message notifying the approach of sex offenders to the chat robot messaging system capable of interactive communication based on the KakaoTalk 3 times to the multiple terminals, and zoom in (Zoom-In) the face of a sex offender through the video camera to acquire and store the captured facial image or to the chat robot messaging system capable of interactive communication based on the KakaoTalk It can be transmitted to a plurality of registered terminals.

In addition, the personal information and location information of the sex offender received from the control monitoring server is recorded in the memory of the dual interface NFC tag, and after recording, the memory by tagging the dual interface NFC tag of the smart terminal among the plurality of terminals. It may further include an electronic device for providing the personal information and location information stored in the smart terminal to the smart terminal through wireless local area communication.

In addition, the electronic device receives a message regarding a rescue request or a patrol request from the smart terminal by tagging the dual interface NFC tag of the smart terminal through wireless local area communication, records the message in the memory, A message regarding the rescue request or patrol request may be transmitted to the control monitoring server through a communication network.

In addition, the electronic device communicates through the dual interface NFC tag and the ports and includes a control unit (MCU), and the dual interface NFC tag includes an antenna for an RF interface, a memory for data storage, and a port for wired communication. It may include.

In addition, the ports for the wired communication, the first port for recognizing the tagging of the smart terminal for the dual interface NFC tag; And a second port for recognizing write to the dual interface NFC tag from the smart terminal.

In addition, the first port may include an EH_FD (Energy Harvest Field Detection) port, and the second port may include an RF_WIP (Radio Frequency Write In Progress) port.

Also, the first port and the second port may be coupled to each other. The coupling can use the output of the first port as a control signal to control enable and disable of the pull-up resistor of the second port.

In addition, the combined signal of the first port and the second port may be used as an interrupt signal for the control unit.

Further, when the interrupt signal is toggled up from low to high and a predetermined time for judging tag validity has elapsed, the control unit displays the dual interface NFC of the smart terminal. It can be recognized as tagging for tags.

In addition, when the interrupt signal is toggled down from high to low and a predetermined time for determining event termination has elapsed, the control unit may recognize the tagging release from the dual interface NFC tag of the smart terminal.

In addition, when the interrupt signal toggles down from high to low and toggles up from low to high again within a predetermined time period, the control unit writes the smart terminal to the memory of the dual interface NFC tag. (write).

In addition, when the interrupt signal is toggled down from high to low and toggled up from low to high within a threshold time, the control unit may recognize the invalid operation.

On the other hand, a method for controlling access to a sex offender in an educational facility for children and adolescents according to an embodiment of the present invention for achieving the above object is: (a) transmitting GPS information and a unique identification signal from a wireless anklet-type wireless tracking device to a plurality of identification readers; ; (b) transmitting the received GPS information and a unique identification signal from the identification reader to a control monitoring server; (c) recognizing the current position of the electronic anklet-type wireless tracking device based on the GPS information in the control monitoring server; (d) the control monitoring server inquiring and obtaining personal information of a sex offender corresponding to the unique identification signal from the sex offender database; (e) The control monitoring server notifies a number of terminals registered in the chat robot messaging system capable of two-way communication based on the Kakao Talk based on an access distance based on the current location of the electronic anklet-type wireless tracking device, thereby informing the access of a sex offender. Sending a warning message or providing a facial image of a sexual offender's face; (f) the control monitoring server receiving a patrol request or a rescue request from one of the plurality of terminals; And (g) the control monitoring server providing a message regarding a patrol request or a rescue request to a police-related terminal.

In addition, in step (d), the control monitoring server, the unique identification signal received from the electronic anklet-type wireless tracking device from the sex offender database when the electronic anklet-type wireless tracking device approaches within a radius of 250 m from the child and youth educational facility. It can be obtained by querying the personal information of sex offenders corresponding to.

In addition, in the step (e), the control monitoring server, the electronic anklet-type wireless tracking device, when approaching within a radius of 200m from the child and adolescent education facilities, a warning message notifying the approach of a sex offender is possible for interactive communication based on the Kakao Talk. It can be transmitted once to multiple terminals registered in the chat robot messaging system.

In addition, in the step (e), the control monitoring server, the electronic anklet-type wireless tracking device, a warning message notifying the approach of a sex offender when approaching within a radius of 100m from the child and youth educational facility, enables KakaoTalk-based interactive communication. It can be transmitted twice to multiple terminals registered in the chat robot messaging system.

In addition, in the step (e), the control monitoring server, the electronic anklet-type wireless tracking device, when approaching within a radius of 50m from the child and youth educational facilities, a warning message notifying the approach of a sex offender is possible for interactive communication based on the KakaoTalk. It can be transmitted to multiple terminals registered in the chat robot messaging system three times.

In addition, in step (e), the control monitoring server zooms in on the face of a sex offender through the video camera when the electronic anklet-type wireless tracking device approaches within a radius of 50m from the child and youth educational facility. One face image can be acquired and stored or transmitted to a plurality of terminals registered in the chat robot messaging system capable of interactive communication based on the KakaoTalk.

In addition, in step (d), the control monitoring server receives the personal information and location information of the sex offender obtained by inquiry and records it in the memory of the dual interface NFC tag, and after recording, the smart terminal among the plurality of terminals The identification information and location information stored in the memory may be provided to the smart terminal through wireless local area communication by tagging the dual interface NFC tag.

Then, in step (f), the electronic device receives a message regarding a rescue request or a patrol request from the smart terminal by tagging the dual interface NFC tag of the smart terminal through wireless local area communication, and records it in the memory. In addition, a message related to the rescue request or the patrol request recorded in the memory may be transmitted to the control monitoring server through a communication network.

According to the present invention, it is possible to control access to the educational facilities by the criminal offenders by implementing the access control system and control method for the sex offenders in the educational facilities for children and adolescents.

Therefore, it is possible to fundamentally block the recurrence of sex crimes against children and adolescents of sex offenders.

1 is a configuration diagram schematically showing the overall configuration of a sexual crime access control system for children and youth educational facilities according to an embodiment of the present invention.
2 is a view showing an example in which an identification reader according to an embodiment of the present invention is installed in a street light.
3 is a view showing a street light installed with an identification reader according to an embodiment of the present invention.
4 is a view showing a location tracking method using a triangulation technique of an RFID reader according to an embodiment of the present invention.
5 is a configuration diagram schematically showing a main internal configuration of a control monitoring server according to an embodiment of the present invention.
6 is a diagram illustrating an example of personal information of a sex offender stored in a monitoring database according to an embodiment of the present invention.
7A is a diagram illustrating an example of executing a rescue request through a chat robot messaging system in a parent terminal according to an embodiment of the present invention.
7B is a diagram illustrating an example of executing a rescue request through a dual interface NFC tag in a parent terminal according to an embodiment of the present invention.
8 is a diagram for explaining an interrupt for recognizing tagging of a parent terminal to a dual interface NFC tag according to an embodiment of the present invention.
9 is a view for explaining an interrupt for recognizing the tagging release of a parent terminal for a dual interface NFC tag according to an embodiment of the present invention.
10 is a diagram for explaining an interrupt for recognizing a recording operation of a parent terminal for a dual interface NFC tag according to an embodiment of the present invention.
11 is a diagram illustrating an electronic device in which a dual-interface NFC tag for short-range wireless communication with a parent terminal according to the present invention communicates by wire.
12 and 13 are circuit diagrams illustrating a combination of a first port and a second port for a dual interface NFC tag according to an embodiment of the present invention.
14 is an operation flowchart for explaining a method of controlling access to a sex offender in an educational facility for children and adolescents according to an embodiment of the present invention.
15 is a flowchart illustrating a specific operation process for access control of sex offenders in the control monitoring server according to an embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving them will be clarified with reference to embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only the present embodiments allow the disclosure of the present invention to be complete, and the ordinary knowledge in the technical field to which the present invention pertains. It is provided to fully inform the holder of the scope of the invention, and the invention is only defined by the scope of the claims. The same reference numerals refer to the same components throughout the specification.

Hereinafter, with reference to the accompanying drawings, a detailed description of the access control system and control method for a sex offender in a child youth education facility according to a preferred embodiment of the present invention are as follows.

1 is a configuration diagram schematically showing the overall configuration of a sexual crime access control system for children and youth educational facilities according to an embodiment of the present invention.

Referring to FIG. 1, a child crime prevention access control system 100 for a child and youth education facility according to an embodiment of the present invention includes a sex offender database (DB) 110, an electronic anklet-type wireless tracking device 120, and a plurality of identification readers ( IDentification Reader (130 to 135), a plurality of video cameras (CCTV) (140 to 145), a control monitoring server 150, a chat robot messaging system 160, a plurality of terminals (170 to 174).

The sex offender DB 110 stores a unique identification (RFID) signal and personal information about the sex offender, and is installed as a separate device, such as the National Police Agency, to be accessed from the outside, or may be installed in a separate server form, such as the Ministry of Justice.

In addition, the sex offender DB 110 may include information such as hospitals, correctional institutions, and local governments, as well as the police agency that manages the offenders.

The electronic anklet type wireless tracking device 120 is mounted in the form of an anklet to a sex offender, and periodically transmits GPS information and a unique identification (RFID) signal where the sex offender is currently located. Accordingly, the electronic anklet-type wireless tracking device 120 may also be referred to as an RFID tag (Tag) 120. Hereinafter, in the embodiment of the present invention, the electronic anklet 120 will be briefly described.

A plurality of identification readers (130 ~ 135) is installed at regular intervals around the child and youth educational facilities, and when the recognition of the access to the electronic anklet 120, receives the GPS information and a unique RFID signal from the electronic anklet 120 to the outside It transmits to the control monitoring server 150 in the. Accordingly, the plurality of identification readers 130 to 135 may be referred to as RFID readers 130 to 135.

At this time, the plurality of identification readers 130 to 135 have their own GPS information, and when transmitting the GPS information and the unique identification signal received from the electronic anklet 120, the GPS time of the unique RFID signal and their GPS information Also transmitted to the control monitoring server 150. Further, the plurality of identification readers 130 to 135 may measure the distance to the electronic anklet 120 and transmit the distance information to the control monitoring server 150 together.

The plurality of image cameras 140 to 145 are respectively installed to correspond to the plurality of identification readers 130 to 135, and are interlocked with the plurality of identification readers 130 to 135 respectively. Accordingly, the plurality of image photographors 140 to 145 acquire the facial image by photographing the face of the sex offender in the place where the electronic anklet 120 is located under the control of the control monitoring server 150.

Multiple video cameras (140~145) are IP camera-based 3 million-pixel class capable of identifying faces during recording and enlarged capture, and transmitting recorded or enlarged captured images. It is a CCTV device with moisture-proof function.

The communication network includes a wired communication network such as the Internet or a public switched telephone network (PSTN), or a local area network such as Bluetooth, Zigbee, RFID communication and HSPA, 3GPP, 4G, 5G It may include a wireless communication network, such as a mobile communication network.

When the control monitoring server 150 receives GPS information and a unique RFID signal from a plurality of identification readers 130 to 135, it acquires the facial image of the sex offender through the imagers 140 to 145 based on the GPS information, and the sex offender Inquiry of the personal information of the sex offender corresponding to the unique RFID signal from the database 110, and accessing the sex offender to a plurality of terminals 170 to 174 registered in the chat robot messaging system capable of interactive communication based on Kakao Talk. Send a warning message to inform, provide personal information and facial images of sex offenders, or send a message regarding a patrol request or a rescue request to a police-related terminal (171, 172) according to a patrol request or a rescue request from one terminal (170). Will be sent.

The plurality of terminals 170 to 174 are terminals registered in the chat robot messaging system, which are resident in a terminal 170 carried by a parent, a terminal 171 carried by a police officer in charge of a police station in the jurisdiction, and a children's youth education facility. It may include a terminal 172 carried by the police, a terminal 173 carried by a person in charge of the Youth Welfare Division of the municipality, jurisdiction, or a terminal 174 carried by a teacher located in a children's youth education facility.

Here, the plurality of terminals 170 to 174 may be, for example, a smart phone, a wireless tablet, or a PDA as a portable terminal.

Meanwhile, the control monitoring server 150 may measure (calculate) the distance between the electronic anklet 120 and the identification readers 130 to 135 based on GPS information.

Therefore, the control monitoring server 150, when the electronic anklet 120 approaches within a radius of 250m from a child and adolescent education facility, the sex offender DB 110, the sex information of the sex offender corresponding to the unique identification signal received from the electronic anklet 120 From, and the electronic anklet 120, a number of terminals registered in the chat robot messaging system 160 capable of interactive communication based on KakaoTalk based on a warning message informing the approach of a sex offender when approaching within a radius of 200m from a child and adolescent education facility (170~175) can be sent once.

In addition, the control monitoring server 150 is registered in the chat robot messaging system capable of two-way communication based on Kakao Talk based on an alert message informing the approach of a sex offender when the electronic anklet 120 approaches within a 100 m radius from a child and youth educational facility. Sends to the terminals 170~174 twice, and the electronic anklet 120 sends a warning message notifying the approach of a sex offender when approaching within a radius of 50m from a child and youth educational facility to a chat robot messaging system capable of interactive communication based on KakaoTalk. The number of registered terminals 170 to 174 can be transmitted three times.

And, the control monitoring server 150, when the electronic anklet 120 approaches within a radius of 50m from a child and adolescent education facility, and transmits a warning message 3 times informing of the approach of the sex offender, as described above, video camera 140 Through ~145), the face of the sex offender can be zoomed-in to obtain and store the captured facial image or transmit it to a plurality of terminals 170 to 174 registered in the chat robot messaging system.

2 is a view showing an example in which an identification reader according to an embodiment of the present invention is installed in a street light.

Referring to FIG. 2, the identification readers 130 to 135 according to the present invention can be installed on the street light 102 located at regular intervals on the road, as shown in FIG. 2.

In an embodiment of the present invention, the RFID street light 102 for use as a location reference point is installed by applying an adiabatic triangulation technique. Insulated triangulation is a method for establishing a survey reference point in the existing surveying industry and is suitable for narrow and long areas such as rivers, roads, and tunnels.

Therefore, rather than installing an identification reader on all the street lights installed at regular intervals, the identification reader 130 so that the electronic anklet 120, which is an RFID tag, is present in the insulation triangle constructed by the identification reader by using the insulation triangle network technique. ~135) is installed in the street light 102 constituting the corresponding triangular network. The location accuracy of the RFID tag is very high inside this insulated triangular network.

At this time, when the identification readers 130 to 135 are installed on the street lamps 102 installed at regular intervals, the RFID recognition distance and the communication distance (when it is wired need not be considered) are installed in consideration of the RFID recognition distance and wireless AP installation. . If this insulated triangular network structure is used, it will be recognized that the operator has deviated from the service area in the case of deviating from the triangular network structure in an apartment complex.

The identification readers 130 to 135 located on the street light 102 may be installed to recognize the electronic anklet 120, which is an RFID tag within a radius of 200 to 400 m, to cover as wide a range as possible. In addition, the interval between the identification readers 130 to 135 is preferably 100 m, and the installation height of the RFID readers 130 to 135 may be appropriately 3.5 m from the ground.

However, it is also possible to use the identification readers 130 to 135 having a recognition area of about several tens of meters in a place such as a street where the street lights 102 are concentrated. The identification readers 130 to 135 transmit search signals for a certain period, for example, every several ns.

The electronic anklet 120, which is an RFID tag, is mounted on the foot of a sex offender and moves at an arbitrary speed. When the electronic anklet 120, which is an RFID tag, is located in the recognition area (propagation area of the search signal) of the identification readers 130-135, the electronic anklet 120, which is an RFID tag, is the search signal of the identification readers 130-135. Recognizes and responds to this, and transmits a response RFID signal including its own identification information (RFID).

Thereafter, the identification readers 130 to 135 can calculate a distance between the RFID tag 120 and itself using the difference between the time when the search signal is transmitted and the time when the RFID signal is received from the RFID tag 120 in response thereto. have. For example, each of the three identification readers 130 to 132 is the difference between the transmission time of the search signal transmitted by itself and the reception time of the response signal from the RFID tag 120 in response (transmission time and response of the search signal) The distance between itself and the RFID tag 120 is calculated from the difference values generated by comparing the reception times of the signals.

That is, since the propagation speed of each of the above signals is a light flux, a distance can be derived by multiplying the transmission time and the reception time from the identification readers 130 to 132 by the light flux. At this time, if the time required for the RFID tag 120 to respond is not negligible, the above time difference may be subtracted from the response time of the RFID tag to multiply the light flux. Typically, it is common to ignore the time it takes for the RFID tag 120 to respond.

Since the identification readers 130 to 135 are installed so that their respective recognition areas overlap, a plurality of identification readers 130 to 135 for one RFID tag 120 calculates the distance between the RFID tag 120 and itself. Is done.

The plurality of identification readers 130 to 135 calculates the position of the RFID tag 120 by a location determination algorithm after calculating the distance from the specific RFID tag 120, and transmits it to the control monitoring server 150 to transmit the RFID The location of the tag 120 can be stored or managed. At this time, the transmission from the identification readers 130 to 135 to the control monitoring server 150 may use a wired network, or wirelessly through a wireless access point (AP) installed in the street light 102 and connected to the identification readers 130 to 135. It can also be delivered to.

3 is a view showing a street light installed with an identification reader according to an embodiment of the present invention.

Referring to FIG. 3, the identification readers 130 to 135 installed in the street light 102 operate as a wireless relay device, generating time data corresponding to RFID based on the RFID signal received from the RFID tag 120 It can be transmitted to the control monitoring server 150. That is, the identification readers 130 to 135 communicate with the RFID tag 120 through a wireless network and communicate with the control monitoring server 150 through a wired network.

The streetlight 102 on which the identification readers 130 to 135 are installed is composed of a columnar 330 and a base 340 as shown in FIG. 3. In the street lamp 102 of FIG. 3, the lamppost 330 is a pillar for installing a street lamp, and an RFID reader or a'wireless AP connected to the RFID reader' is installed. The identification readers 130 to 135 are preferably installed at a height of 3.5 m above the ground, and a built-in box method of dividing a groove in the lamppost 330 and covering it with plastic to minimize the effect of strong wind and rainfall may be suitable. At the end extending from the columnar 330, a lantern 310 is positioned, and an RFID embedded box 320 is positioned at an intermediate point. The street light base 340 is located at the bottom of the ground, and a wired communication network required for the location tracking data transmission of the identification readers 130 to 135 is installed. Here, in the case of installing the AP, the optical cable may be connected to a normal band to form a network.

On the other hand, in the present invention, with respect to the position of the sex offender equipped with the electronic anklet 120, through the communication between the identification readers 130 to 135 and the electronic anklet 120, the positional information of the electronic anklet as an RFID tag can be obtained as follows. Can.

In an embodiment of the present invention, the identification readers 130 to 135 are installed in a fixed facility such as a street light 102 to use the position coordinates of the fixed facility as a reference point (location coordinate reference point), thereby real-time positioning of the RFID tag 120. Can be traced. That is, it is installed at regular intervals for each road (different installation intervals for each road width according to the street lighting installation standard method) and is capable of supplying power, and above all, accurate location data (location coordinates) that can be commonly used around the world using a numerical map. ) Is selected as a fixed facility in which the identification readers 130 to 135 are installed.

Here, the meaning of the digital map is a cell ID that is a technique for tracking the location of a moving object, a received signal strength measurement (RSSI), an arrival angle of a signal (AOA: Angel of Arrival), and a signal arrival It provides a location reference point that can be the basis of all methods, such as Direction of Arrival (DoA), Time of Arrival (TOA), and Time Difference of Arrival (TDoA). Of course, the Cell ID method provides one location reference point, the AoA, ToA and TDoA methods using the triangulation principle provide three location reference points, and the RSSI method provides one or more location reference points (triangulation principle) May or may not be used), DoA method provides more than two reference points.

In particular, since the TDoA calculates the distance using the precise radio wave transmission/reception time difference between the identification readers 130 to 135 and the RFID tag 120, the role of the reference position reference point is very important. In addition, in the present invention, if a fixed facility such as a street light 102 is used, a more precise cell can be constructed, thereby compensating for the weakness of the Cell ID method that the existing base station radius is too wide.

In the embodiment of the present invention, in particular, the location tracking method by the TDoA method will be described in more detail. However, it should be noted that the present invention is not limited to this, and the following is a schematic look at each location tracking method to help understanding.

First, the location of the sex offender can be tracked using the time of arrival (ToA) of the signal reaching the various identification readers 130 to 135 around the tag from the RFID tag 120. That is, if the arrival time of the signal reaching each identification reader 130 to 135 is known, the distance from the identification readers 130 to 135 to the RFID tag 120 can be converted, and various identifications around the RFID tag 120 are possible. Using the distance information obtained from the readers 130-135, the location of a sex offender (RFID tag) can be tracked.

Second, it is possible to track the position of a sex offender through measurement of received signal strength (RSSI).

That is, two identification readers 130 to 131 may measure the strength of the RFID tag signal to track the location. This assumes that the transmission power of the RFID tag 120 is known, and when the attenuation of the received signal is measured, the distance from the RFID tag 120 to the identification readers 130 to 131 is applied by applying a radio wave model suitable for the environment. Can be converted according to 1. The location of the RFID tag 120 can be tracked using this distance information.

In Equation 1, L denotes signal loss, c denotes propagation speed, and f denotes frequency.

Third, the location of the sex offender can be tracked using the direction of arrival (DoA) of the signal.

In other words, when estimating the arrival direction of the signals from the two or more identification readers 130 to 135, the position of the RFID tag 120 of the worker can be grasped at the intersection of the directions. This technique requires an array antenna in the cell (identification reader).

Fourth, the location of the sex offender can be tracked using the time difference of arrival (TDoA) of the signal.

It is assumed that three or more cells (identification readers) are involved and each cell (identification reader) is synchronized. The time difference between the cells (RFID reader) is obtained by measuring the time stamp of the signal in each cell (RFID reader). From this time difference, it is possible to grasp the position of the electronic anklet 120 as an RFID tag as an intersection between cells (RFID reader).

Among the above-described methods, as illustrated in FIG. 4, the position of the identification readers 130 to 135 may be tracked by using a triangulation technique. 4 is a view showing a location tracking method using a triangulation technique of an RFID reader according to an embodiment of the present invention. In FIG. 4, the distances d1, d2, and d3 between the identification readers 1,2,3 (130 to 132) and the electronic anklet 120, which is an RFID tag, are obtained, and by the Pythagorean theorem, the identification reader and the RFID tag according to Equation 2 below. Calculate the distance between.

5 is a configuration diagram schematically showing a main internal configuration of a control monitoring server according to an embodiment of the present invention.

Referring to FIG. 5, the control monitoring server 150 according to an embodiment of the present invention includes a communication unit 510, a monitoring database (DB) 520, a control unit 530, and a memory 540.

Here, although not illustrated in FIG. 5, an input unit for receiving data from an administrator and a display unit for outputting control and processing results of the control unit 530 on the screen may be further included. All the control monitoring server 150 described below means'artificial intelligence control monitoring server' according to the present invention.

The communication unit 510 is a device for transmitting and receiving data through the communication network with the identification readers 130-135 and the video cameras 140-145. That is, the communication unit 510 receives RFID signals, time data, and image data from the identification readers 130-135 and the image photographing units 140-145. The communication unit 510 may include, for example, a communication modem (MODEM) or a network interface device, a network adapter, a gateway system, and the like.

The monitoring database (DB) 520 stores time data and video data matched to the RFID, and stores the personal information of the sex offender corresponding to the RFID obtained by inquiring from the sex offender DB 110 as shown in FIG. 6. . 6 is a diagram illustrating an example of personal information of a sex offender stored in a monitoring database according to an embodiment of the present invention. In FIG. 6, personal information includes, for example, RFID, name, age, gender, crime type, height, weight, social security number, contact number, residential area, family number, and the like. Also, the personal information may further include a crime area in which a sex offender corresponding to each RFID has committed a crime, and a crime incidence rate according to each environmental situation.

The monitoring DB 520 may store mobile terminal information for a plurality of terminals 170 to 174 registered in the chat robot messaging system 160 capable of interactive communication based on KakaoTalk. Here, the mobile terminal information may primarily include a mobile phone number and a KakaoTalk ID, and secondly, the information of the guardian, the school-resident police, the school teacher in charge of the mobile terminal, or the police station in the school, jurisdiction, jurisdiction It may include information from the department of child and youth in the municipality.

The control unit 530 is provided with artificial intelligence (AI), matches the image data, time data and RFID received from each identification reader (130 to 135) through the artificial intelligence, and the RFID based on the time data of the RFID Calculate the number of crimes and the number of crimes for each region according to each region, and generate a crime model by estimating the calculated number of crimes and the relationship between each region. The form is predictable. Here, personal information used to generate a crime model includes age, gender, height, weight, residential area, mobile area, number of appearances, and crime type.

The control unit 530 may be implemented by, for example, a microprocessor in the form of a chip, a processor, or a main control unit. In the method embodiment according to the present invention, the microprocessor 230 will be described.

In addition, the control unit 530 may calculate the crime occurrence rate according to the region name for each RFID as illustrated in FIG. 6 based on the received image data, time data, and RFID. For example, the control unit 530 calculates the crime incidence rate for each RFID region name based on the time data for each RFID received from the RFID readers 130 to 135 and the number of crimes in each region, and monitors the database 520 ).

In addition, the control unit 530 classifies the crime incidence rate for each year by RFID according to items including age, height, weight, and residential area, and monitors by listing in descending order from the highest crime incidence rate for each item. It can be stored in the database 520.

In addition, the control unit 530, based on the list organized in descending order from the highest incidence for each item for the crime incidence rate for each year for each RFID, the relationship between age and crime incidence, the relationship between height and crime incidence, weight After learning the relationship between and the crime incidence, the relationship between the region and the crime incidence, a crime model for estimating the incidence of crime according to age, height, weight, and region may be generated and stored in the monitoring database 520.

Then, the control unit 530, after recognizing the local name information on which the currently detected electronic anklet 120 is located, and mapping the RFID of the sex offender to the recognized local name information, age, height, and weight according to the corresponding RFID. , By assigning the region to the crime model, the crime incidence rate and crime type for the current location of the corresponding RFID can be calculated.

The memory 540 is a storage medium for temporarily storing the calculation result of each step when the controller 530 calculates. In addition, the memory 540 temporarily stores information or data required for the control processing of the control unit 530, or temporarily stores the crime type and the crime occurrence rate of each RFID generated by the control unit 530 in the calculation process. have.

In addition, the memory 540, the controller 530 classifies the occurrence of crime per year for each RFID according to items including age, height, weight, and area, and lists the data listed in descending order from the highest crime occurrence rate for each item. Can be saved.

Then, the memory 540, after the controller 530 learns the relationship between age and crime incidence, the relationship between height and crime incidence, the relationship between regions and crime types, and the relationship between the region and crime incidence, age, height, and region The generated crime model can be temporarily stored to estimate the type of crime and the incidence of crime.

On the other hand, when a youth, a parent, or a teacher in charge of an educational facility receives a message that a sexual offender is approaching within 50m near the educational facility from the chat robot messaging system 160 capable of interactive communication based on KakaoTalk, the police station or Police-related terminals (171, 172), such as resident police officers who reside in educational facilities, request patrols or rescue.

7A is a diagram illustrating an example of executing a rescue request through a chat robot messaging system in a parent terminal according to an embodiment of the present invention.

Referring to FIG. 7A, the parent terminal 170 according to an embodiment of the present invention receives a message that a sexual offender approaches within 50m near an educational facility through a chat robot messaging system 160 capable of interactive communication based on KakaoTalk. In this case, a patrol request or rescue request is made to the police terminal 171 carried by the police officer in the police station or the resident police terminal 172 residing in the educational facility.

Here, the chat robot messaging system 160 capable of interactive communication based on KakaoTalk is a function of calling and using the corresponding API in the control monitoring server 150 using an open builder called "kakao I developers" provided by Kakao. .

That is, after creating a Kakao Talk chatbot by logging into the Kakao Talk account from the control monitoring server 150 and entering information for creating a detailed account according to the purpose and characteristics, the police officer in charge of the police station, including the parent terminal 170, Invite the terminal 171, the resident police terminal 172 in the education facility, the terminal 173 of the youth welfare department, the teacher terminal 174, and the like, and register it in the chat robot message system 160.

The chat robot messaging system 160 provides a menu of viewing location information of a user, querying user's personal information, reporting, patrol request, and rescue request to a plurality of registered terminals 170-174.

Chat robot messaging system 160, "When the user's location information view menu is selected, by providing the traffic information through the GPS information for the criminal's electronic anklet 120 on the map on the control monitoring server 150, a number of registered Let the terminals (170 ~ 174) of the real-time monitoring.

In addition, the chat robot messaging system 160, when a user selects a menu for viewing personal information, accesses personal information from the sex offender DB 110 through the control monitoring server 150 when the user accesses within the initial access radius. Information is returned as a result value.

In addition, the chat robot messaging system 160 executes a call to the police station or police box closest to the school from the control monitoring server 150 when the “Report” menu is selected, and reports the responded data value To a chatbot.

On the other hand, parents, adolescents, and teachers in charge can execute patrol requests or rescue requests through NFC tagging on nearby electronic devices (devices for patrol requests or rescue requests) using their smart terminals.

7B is a diagram illustrating an example of executing a rescue request through a dual interface NFC tag in a parent terminal according to an embodiment of the present invention.

Referring to FIG. 7, the child crime prevention access control system 100 for a child and youth education facility according to an embodiment of the present invention includes a smart terminal 10, a dual interface NFC tag 20, and an electronic device 30.

The smart terminal 10 is a terminal carried by a child or a teenager, a teacher in charge, or a terminal carried by a parent, and is a terminal that performs wireless communication with the dual interface NFC tag 20.

The smart terminal 10 may also be referred to as a subscriber unit, subscriber station, mobile station, mobile, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent, user device or user equipment (UE).

The smart terminal 10 may include a cellular phone, a wireless telephone, a thin line start protocol (SIP) telephone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with a wireless access capability, a computing device, or a wireless modem. It may be another processing device connected to.

However, the smart terminal 10 should not be limited to these terms. The smart terminal 10 should be understood as any device including an NFC module that is an active device for wireless short-range communication with the dual interface NFC tag 20. The smart terminal 10 performs short range wireless communication with the dual interface NFC tag 20 through the antenna 21 of the dual interface NFC tag 20.

The dual interface NFC tag 20 performs short-range wireless communication with the smart terminal 10 and performs wired communication with the electronic device 30. For example, wired communication includes serial communication, USB communication, I2C communication, SPI communication, and the like.

The dual interface NFC tag 20 includes an antenna 21 for an RF interface, a memory 22 for data storage, and ports 23 for wired communication.

The antenna 21 for the RF interface enables a signal according to a radio frequency in the air to transmit and receive data as if a conductor is connected, and the antenna 21 supports wireless short-range (eg, 10 cm) communication do.

In general, the antenna 21 is composed of a loop antenna, the loop antenna may be implemented as a PCB, FPCB, general conductor.

The memory 22 for data storage is generally a non-volatile memory (NVM) and may be, for example, EEPROM (Electrically Erasable Programmable Read-Only Memory). When implemented as an EEPROM, the memory 22 applies an electrical signal to erase internal data, so a dedicated eraser for data deletion is not required, and writing and erasing can be performed using a single writer. The EEPROM may have a limit of about 1 million times of repetitive writing.

Ports 23 for wired communication include a dual interface NFC tag 20 from a port (first port) and a smart terminal 10 for recognizing the tagging of the smart terminal 10 to the dual interface NFC tag 20 It may include a port (second port) for recognizing the write (write) for.

The first port for recognizing the tagging of the smart terminal 10 with respect to the dual interface NFC tag 20 may include, for example, an Energy Harvest Field Detection (EH_FD) port. The second port for recognizing the recording of the dual interface NFC tag 20 from the smart terminal 10 may include, for example, a Radio Frequency Write In Progress (RF_WIP) port.

In addition, the ports 23 for wired communication may also include ports for receiving data from the electronic device 30. For example, in the case of I2C wired communication, the electronic device 30 is connected to the memory 22 of the dual interface NFC tag 20 through wired communication through a serial clock (SCL) port and/or a serial data (SDA) port. Data can be recorded.

The operating characteristics of the first port for recognizing the tagging of the smart terminal 10 with respect to the dual interface NFC tag 20 are as follows.

The dual interface NFC tag 20 may receive operation power from the smart terminal 10. The smart terminal 10 generates an electromagnetic field, and when the smart terminal 10 approaches the dual interface NFC tag 20 within a certain range, the generated electromagnetic field operates as an operating power of the dual interface NFC tag 20. The first port is a port for detecting the presence or absence of an electromagnetic field of the smart terminal 10 described above, and when the existence of the electromagnetic field is confirmed, the signal waveform is toggled up.

Meanwhile, since the dual interface NFC tag 20 is connected to the electronic device 30 through wired communication, in some cases, the operating power may be input from the electronic device 30 through a wired line.

The operating characteristics of the second port for recognizing the record of the dual interface NFC tag 20 from the smart terminal 10 are as follows.

When the dual interface NFC tag 20 is receiving input of operation power from the smart terminal 10, the smart terminal 10 performs a writing operation on the memory 22 of the dual interface NFC tag 20 , The signal waveform that has been toggled up is toggled down, and after a certain period of time has elapsed, the signal waveform is toggled up again. The second port can detect that the smart terminal 10 has performed recording of the memory of the dual interface NFC tag 20 by detecting that the toggled-up signal waveform is toggled-down and toggled-up again.

Ports 23 for wired communication including the aforementioned first port and second port support wired communication with the electronic device 30. Specifically, the ports 23 for wired communication are connected to the control unit (MCU, 31) of the electronic device 30 by a wired line.

The electronic device 30 is a device installed around the educational facility, for example, the identification readers 130 to 135 installed in the street light 102, and the image cameras 140 to 140 respectively installed in correspondence with the identification readers 130 to 135. 145) Alternatively, it may be a device installed in a surrounding object or a tree in addition to a street light. The electronic device 30 includes a control unit 31, and the control unit 31 performs wired communication with the dual interface NFC tag 20.

As described above, the smart terminal 10 may perform recording and reading through the wireless short-range communication to the memory 22 of the dual interface NFC tag 20, and the electronic device 30 may display the dual interface NFC tag ( The memory 22 of 20) can be written and read through wired communication. That is, the concept of the memory of the dual interface NFC tag is shared between the smart terminal 10 and the electronic device 30. For example, the electronic device 30 may record the personal information and location information of the sex offender received from the control monitoring server 150 to the memory 22 of the dual interface NFC tag 200 through wired communication, and record Thereafter, the smart terminal 10 may be provided by reading personal information and location information stored in the memory 22 by wireless local area communication.

Conversely, a parent or teacher can record a patrol request or a rescue request to the memory 22 using the smart terminal 10, and the electronic device 30 can record the recorded patrol request or rescue request data through the communication network. It can be transmitted to the control monitoring server 150.

However, since the smart terminal 10 and the electronic device 30 communicate with each other through a memory sharing method rather than a traditional communication method, the electronic device 30 has been tagged or released by the smart terminal 10, (10) A technique capable of recognizing whether or not there has been data recording is required. Accordingly, the present invention provides a method for the electronic device 30 to recognize the operation of the smart terminal 10.

According to the present invention, by generating an interrupt on the control unit 31 of the electronic device 30, the electronic device 30 can recognize whether the smart terminal 10 is operating or not. For the interrupt, the present invention uses a combination of a first port for recognizing the tagging of the smart terminal 10 and a second port for recognizing a record for the dual interface NFC tag 20 from the smart terminal 10. As described above, the first port may be an EH_FD port, and the second port may be an RF_WIP port.

A method of using the output of the first port as a control signal for controlling enabling and disabling of the pull-up resistor of the second port is used as a combination method of the first port and the second port. . 12 and 13 will be referred to first to describe a coupling method of the first port and the second port.

12 and 13 are circuit diagrams illustrating a combination of a first port and a second port for a dual interface NFC tag according to an embodiment of the present invention.

12 and 13, the first port will be described as an EH_FD port and the second port as an RF_WIP port.

When the smart terminal 10 is tagged with the dual interface NFC tag 20, power is generated in the IC of the dual interface NFC tag 20 by the electromagnetic field generated by the smart terminal 10. The generated power is output to the EH_FD of the IC of the dual interface NFC tag 20 in FIGS. 12 and 13. The output of the EH_FD is input to the VCC port of the dual interface NFC tag 20 IC and can be used as an operating power source, and can also be used as a signal to recognize the state that the smart terminal 10 is tagged.

The RF_WIP signal is toggled down from high to low when data is recorded in the tagging state from the smart terminal 10 to the dual interface NFC tag 20 IC, and then goes from low to high again after a certain time has elapsed. This is a signal toggling up to indicate that a record has occurred.

The RF_WIP port is basically an open-drain port. Due to the nature of the open-drain port, no output can be generated without a pull-up resistor outside the port. Here, RF_WIP is a signal that cannot be generated in a state where EH_FD is low because a recording operation occurs on the premise that the smart terminal 10 is tagged. Therefore, the EH_FD port and the RF_WIP port are combined so that the enable of the pull-up resistor of RF_WIP in FIGS. 12 and 13 can be controlled according to the EH_FD signal. That is, in FIG. 12 and FIG. 13, the RF_WIP output of the dual interface NFC tag 20 IC and the output signal of the GEN INT stage are configured as EH_FD + RF_WIP, which is a combination of EH_FD and RF_WIP.

The resistor R11 of the output terminal of GEN INT is a collector resistor of the transistor Q2 and a pull-up resistor of RF_WIP. When EH_FD is low in GEN INT, the output terminal transistor Q2 is conducting, and since the EH_FD + RF_WIP node is connected to GND, R11 does not operate as a pull-up resistor. When the EH_FD is high, the output terminal transistor Q2 is not conducting, so that R11 can operate as a pull-up resistor, and the EH_FD + RF_WIP node goes high and recognizes that the smart terminal 10 is tagged, In this state, when data recording occurs from the smart terminal 10, the EH_FD + RF_WIP signal is toggled down to Low for a certain period of time, and then toggled up to High, so that a recording operation has occurred. I can see that.

8 is a diagram for explaining an interrupt for recognizing tagging of a smart terminal 10 that is a parent terminal for a dual interface NFC tag 20 according to an embodiment of the present invention.

As described above, a combined signal in which signals from the first port and the second port are combined is used as an interrupt signal to the control unit 31 of the electronic device 30. The first port is a port for recognizing the tagging of the smart terminal 10 with respect to the dual interface NFC tag 20, and may be, for example, an EH_FD port, and the second port is a dual interface NFC tag from the smart terminal 10 ( The port for recognizing the record for 20) may be, for example, an RF_WIP port.

As illustrated in FIG. 8, when the combined signal of the first port and the second port is toggled up from low to high, and the predetermined time for judging tag validity has passed, the control unit 31 Recognizes the tagging of the smart terminal 10 for the dual interface NFC tag 20.

The reason for introducing a predetermined time for judging the validity of tagging is that when tagging of the smart terminal 10, the signal waveform is not toggled up steadily and some chopping occurs. Moreover, since it is a tagging using a non-contact RF method, there is more room for such chopping. Accordingly, the present invention introduces a predetermined time for tagging validity determination to detect only valid tagging. It may be changed according to the system setting or the operating environment of the system, but the predetermined time for determining the validity of tagging may be 500 ms.

9 is a diagram for explaining an interrupt for recognizing tagging release of a smart terminal 10, which is a parent terminal, for a dual interface NFC tag 20 according to an embodiment of the present invention.

As described above, the combined signal of the first port and the second port is used as an interrupt signal to the control unit 31 of the electronic device 30. The first port is a port for recognizing the tagging of the smart terminal 10 with respect to the dual interface NFC tag 20, and may be, for example, an EH_FD port, and the second port is a dual interface NFC tag from the smart terminal 10 ( The port for recognizing the record for 20) may be, for example, an RF_WIP port.

As illustrated in FIG. 9, when the combined signal of the first port and the second port is toggled down from high to low and passes a predetermined time (100 ms) for determining event termination, control The unit 31 recognizes the tagging release of the smart terminal 10 for the dual interface NFC tag 20.

The reason for introducing a predetermined time for determining the end of the event is that after the signal waveform is toggled-up due to the tagging of the smart terminal 10, toggle-down may occur due to various reasons. For example, the signal of the first port may be toggled down due to the temporary increase in the contact distance of the smart terminal 10, or even if the smart terminal 10 performs recording on the memory 22, the toggle is down. This may happen. Therefore, the present invention introduces a predetermined time for determining the end of an event in order to detect only effective tagging release. It may be changed according to the system setting or the operating environment of the system, but the predetermined time for determining the event termination may be 100 ms.

10 is a diagram for explaining an interrupt for recognizing a recording operation of a smart terminal 10, which is a parent terminal to the dual interface NFC tag 20, according to an embodiment of the present invention.

As described above, the combined signal of the first port and the second port is used as an interrupt signal to the control unit 31 of the electronic device 30. The first port is a port for recognizing the tagging of the smart terminal 10 with respect to the dual interface NFC tag 20, and may be, for example, an EH_FD port, and the second port is a dual interface NFC tag from the smart terminal 10 ( The port for recognizing the record for 20) may be, for example, an RF_WIP port.

As shown in Fig. 10, the combined signal of the first port and the second port toggles down from high to low and toggles from low to high again within a period of time. -When up, the control unit 31 recognizes the recording operation of the smart terminal 10 with respect to the memory 22 of the dual interface NFC tag 20.

The period of the predetermined time may be a predetermined value and may correspond to the toggle-down maintenance that occurs when the smart terminal 10 writes to the memory 22. Although it may be changed according to the system setting or the operating environment of the present system, the period of a predetermined time for recognizing the recording operation of the smart terminal 10 may be a period of time exceeding 7 ms and less than 10 ms.

In addition, as shown in FIG. 10, the combined signal of the first port and the second port toggles down from high to low and toggles from low to high again within a threshold time. -When it is up, the control unit 31 can recognize it as an invalid operation. For example, the smart terminal 10 may temporarily move away or toggle-down may occur due to other noise, and if the period is within a threshold time, the control unit 31 does not recognize this phenomenon as a significant operation and invalid operation Recognize as. Depending on the system settings or the operating environment of the system, the threshold time for recognizing invalid motion may be 7 ms.

11 is a diagram illustrating an electronic device 30 in which a dual interface NFC tag 20 in short-range wireless communication with a smart terminal as a parent terminal communicates with a wire according to an embodiment of the present invention.

Referring to FIG. 11, the electronic device 30 in this embodiment includes a wired signal receiver 35, an interrupt generator 36, and a motion recognition unit 37. The wired signal receiver 35, the interrupt generator 36, and the motion recognition unit 37 in this embodiment may all be integrated and implemented as the control units (MCU, 31) in the previous embodiment.

The electronic device 30 in this embodiment performs wired communication with the dual interface NFC tag 20, and the dual interface NFC tag 20 has an antenna 21 for performing short range wireless communication with the smart terminal 10. , Memory 22 for data storage, and ports 23 for wired communication with the electronic device 30. Ports 230 for wired communication record the dual interface NFC tag 20 from the first port and the smart terminal 10 for recognizing the tagging of the smart terminal 10 for the dual interface NFC tag 20 It includes a second port for recognizing. For example, the first port may be an Energy Harverst Field Detection (EH_FD) port, and the second port may be a Radio Frequency Write In Progress (RF_WIP) port.

The wired signal receiver 35 receives wired signals from the dual interface NFC tag 20, and for this purpose, the wired signal receiver 35 is connected to the dual interface NFC tag 20 by a wired line. The wired signals received by the wired signal receiver 35 are dual interface NFC tags 20 from the smart terminal 10 and the signal of the first port for recognizing the tagging of the smart terminal 10 to the dual interface NFC tag 20 ), the signal of the second port for recognizing the record.

The interrupt generator 36 generates an interrupt signal based on signals received by the wired signal receiver 35. To generate an interrupt signal, the interrupt generator 36 adopts a method of combining the first port signal and the second port signal. Specifically, the method of combining the first port signal and the second port signal is a method of using the output of the first port as a control signal for controlling enable and disable of the pull-up resistor of the second port. do. 12, which describes a combination method of the first port and the second port, is as described above.

The motion recognition unit 37 recognizes the operation of the smart terminal 10 based on the interrupt signal generated by the interrupt generator 36. Specifically, the operation of the smart terminal 10 recognized by the motion recognition unit 37 is a tagging of the dual interface NFC tag 20 of the smart terminal 910, from the dual interface NFC tag 20 of the smart terminal 10. Tagging release, recording and invalid operation of the smart terminal 10 to the memory 22 of the dual interface NFC tag 20.

When the interrupt signal is toggled up from low to high and the predetermined time for judging tag validity has elapsed, the motion recognition unit 37 is a smart terminal 10 for the dual interface NFC tag 20 It is recognized as tagging. It may be changed according to the system setting or the operating environment of the system, but the predetermined time for determining the validity of tagging may be 500 ms.

When the interrupt signal is toggled down from high to low and a predetermined time for determining event termination has elapsed, the motion recognition unit 37 is a smart terminal 10 for the dual interface NFC tag 20 ). It may be changed according to the system setting or the operating environment of the system, but the predetermined time for determining the event termination may be 100 ms.

When the interrupt signal is toggled down from high to low and then toggled up from low to high within a predetermined time period, the gesture recognition unit 37 dual interface NFC tag Recognize the recording operation of the smart terminal 10 to the memory 22 of (20). Although it may be changed according to the system setting or the operating environment of the present system, the predetermined time period for recognizing the recording operation of the smart terminal 10 may be a time period exceeding 7 ms and less than 10 ms.

The motion recognition unit 37 recognizes an invalid operation when the interrupt signal toggles down from high to low and toggles up from low to high within a threshold time. Depending on the system settings or the operating environment of the system, the threshold time for recognizing invalid motion may be 7 ms.

14 is an operation flowchart for explaining a method of controlling access to a sex offender in an educational facility for children and teenagers according to an embodiment of the present invention.

Referring to FIG. 14, the access control system 100 for a sex offender of a child and adolescent education facility according to an embodiment of the present invention includes GPS information and unique information from a plurality of identification readers 130 to 135 in the electronic anklet-type wireless tracking device 120. The RFID signal is periodically transmitted (S1410).

Subsequently, the plurality of identification readers 130 to 135 transmits the received GPS information and a unique RFID signal to the control monitoring server 140 (S1420).

That is, the identification readers 130 to 135 function as a repeater, and transmit the GPS information and the unique RFID signal of the sex offender received from the electronic anklet 120 to the control monitoring server 150 through the communication network.

Subsequently, the control monitoring server 150 recognizes the current location of the electronic anklet-type wireless tracking device 120 based on the GPS information (S1430).

That is, the control monitoring server 150 is to recognize the current position of the electronic anklet 120 to recognize how much the electronic anklet 120 is approaching the child/adolescent education facility based on GPS information.

Subsequently, the control monitoring server 150 retrieves and acquires personal information of the sex offender corresponding to the unique RFID signal from the sex offender DB 110 (S1440).

That is, the control monitoring server 150 retrieves the personal information of the sex offender corresponding to the unique RFID signal of the electronic anklet 120 from the sex offender DB 110 when the electronic anklet 120 approaches within a radius of 250 m from the child and youth education facility. Can be obtained.

Subsequently, the control monitoring server 150 has a plurality of terminals 170 to 174 registered in the chat robot messaging system 160 capable of interactive communication based on KakaoTalk based on the access distance based on the current location of the electronic anklet 120. Sends a warning message to inform the sexual offender's approach, or provides a facial image of the sex offender's face (S1450).

For example, the control monitoring server 150 includes a number of terminals registered in the chat robot messaging system 160 capable of interactive communication based on KakaoTalk when the electronic anklet 120 approaches within a radius of 200m from a child and youth educational facility ( 170~174) may send a warning message informing them of the approach of the sex offender once.

In addition, the control monitoring server 150, the electronic anklets 120 when accessing within a radius of 100m from a child and adolescent education facility, a number of terminals 170~ registered in the chat robot messaging system 160 capable of interactive communication based on KakaoTalk A warning message may be sent twice to inform 174) of the approach of the sex offender.

In addition, the control monitoring server 150 has a number of terminals 170~ registered in the chat robot messaging system 160 capable of two-way communication based on KakaoTalk when the electronic anklet 120 approaches within a 50m radius from a child and youth educational facility. A warning message may be sent three times to inform 174) of the approach of the sex offender.

In addition, the control monitoring server 150 acquires and stores a facial image taken by zooming in the face of a sex offender through an image camera when the electronic anklet 120 approaches within a radius of 50m from a child and adolescent educational facility or stores it or cacao It can be transmitted to a plurality of terminals 170 to 174 registered in the chat robot messaging system 160 capable of interactive communication based on the talk.

Subsequently, the control monitoring server 150 receives a patrol request or a rescue request from one of a plurality of terminals, that is, the parent terminal 170 (S1460).

At this time, the control monitoring server 150 receives the patrol request or the rescue request from the parent terminal 170 through the chat robot messaging system 160, or the parent terminal 170 tags the dual interface NFC tag 20 to electronically A patrol request or a rescue request may be received from the device 30.

Subsequently, the control monitoring server 150 provides a message relating to the patrol request or the rescue request to the police-related terminals in the educational facility or in the police station having jurisdiction through a chat robot messaging system (S1470).

For example, the control monitoring server 150 transmits a message regarding a patrol request or a rescue request to the police terminal 172 resident in the educational facility or the police terminal 171 in the police station.

Accordingly, the police stationed in the educational facility or the police officer in the police station in the jurisdiction will be dispatched to the scene of a sex offender who is approaching the education facility, thereby interrogating the sex offender or preventing the sex offender from entering the educational facility.

15 is a flowchart illustrating a specific operation process for access control of sex offenders in the control monitoring server according to an embodiment of the present invention.

Referring to FIG. 15, the access control system 100 for a sex offender of a child and adolescent education facility according to an exemplary embodiment of the present invention includes GPS information and a unique RFID signal received by the control monitoring server 150 from the identification readers 130 to 135. Based on this, the distance from the electronic anklet 120 is recognized (S1502).

When the electronic anklet 120 approaches the 250 m radius from the identification readers 130 to 135 (S1504-Yes), the control monitoring server 150 accesses the sex offender DB 110 to identify the sex offender corresponding to the unique RFID signal. Information is inquired (S1506).

Subsequently, when the electronic anklet 120 approaches the 200 m radius from the identification readers 130 to 135 (S1508-Yes), the control monitoring server 150 is a chat robot messaging system 160 capable of interactive communication based on KakaoTalk. Sends a warning message (Alert) to the number of terminals (170 to 174) registered to the information that the sex offender is approaching 200 m once, and the location information of the electronic anklet (120) from the identification readers (130 to 135) Receives (S1510).

Subsequently, when the electronic anklet 120 approaches the radius 100m from the identification readers 130 to 135 (S1512-Yes), the control monitoring server 150 is a chat robot messaging system 160 capable of interactive communication based on KakaoTalk. A plurality of terminals (170 ~ 174) registered in the warning message (Alert) to inform that the sex offender is approaching 100m is transmitted twice, and the location information of the electronic anklet (120) from the identification readers (130-135) It receives (S1514).

Subsequently, when the electronic anklet 120 approaches the radius 50m from the identification readers 130-135 (S1516-Yes), the control monitoring server 150 zooms in on the sex offender through the corresponding imagers 140-145 ( Zoom-In) (Face Scan) to acquire a facial image (S1518), KakaoTalk-based two-way communication capable chat robot messaging system 160 registered to a number of terminals (170 to 174) registered In addition to transmitting a warning message (Alert) three times to guide that the sexual offender is approaching 50m, the facial image is transmitted, and the location information of the electronic anklet 120 is received from the corresponding identification readers 130-135 (S1520). .

At this time, a parent or teacher in charge of receiving a warning message that a sex offender is approaching an educational facility within 50m is worried about children and adolescents, and chat robot messaging using the smart terminal 10 or each of the terminals 170 and 174 A patrol request or a rescue request is performed through the system 160 or the dual interface NFC tag 20 (S1522).

Subsequently, the control monitoring server 150 transmits a message regarding the rescue request or the patrol request received through the chat robot messaging system 160 or the dual interface NFC tag 20 to the corresponding police station or police-related terminal (S1524).

That is, the control monitoring server 150 transmits a message regarding a rescue request or a patrol request to the police terminal 171 in the police station or to the resident police terminal 172 in the educational facility. Therefore, the police in charge of the police station or the police stationed in the educational facility immediately go to the scene where the sex offenders are located, so that the occurrence of sex crimes by sex offenders can be prevented and blocked.

Subsequently, the control monitoring server 150 sends the message of the message regarding the rescue request or the patrol request to a plurality of terminals 170 to 174 registered in the chat robot messaging system 160 capable of interactive communication based on KakaoTalk. By sending (S1526), it is possible to share with parents and teachers in charge.

As described above, according to the present invention, sexual offenders are physically blocked from physical intrusions approaching near children and youth educational facilities, guardians, resident police in the facility, teachers in the facilities, youth welfare departments in the city and ward offices, education offices, police stations, etc. By sending a warning message using a smart phone terminal, it is possible to realize a system and method for access control of sex offenders at children's youth education facilities, which can help to ensure the safety of education facilities where children and teenagers reside.

In the above, the embodiments of the present invention have been mainly described, but various changes or modifications can be made at the level of a person skilled in the art to which the present invention pertains. These changes and modifications can be said to belong to the present invention without departing from the scope of the technical idea provided by the present invention. Therefore, the scope of the present invention should be judged by the claims set forth below.

10: smart terminal 20: dual interface NFC tag
21: RF interface antenna 22: memory
23: wired communication ports 30: electronics
31: control unit (MCU) 35: wired signal receiver
36: interrupt generator 37: motion recognition unit
100: access control system for sexual offenders in educational facilities for children and youth
110: sex offender DB 120: electronic anklet-type wireless tracking device
130~135: Identification reader 140~145: Video camera
150: control monitoring server 160: chat robot messaging system
170~174: Multiple terminals 102: Street light
310: light source 320: RFID built-in box
330: lamppost 340: street light foundation
510: Communication unit 520: Monitoring DB
530; Control unit 540: memory

Claims (10)

A sex offender database storing unique identification signals and personal information about the sex offender;
An electronic anklet-type wireless tracking device that is mounted on a sex offender and periodically transmits GPS information and a unique identification (RFID) signal at the current location;
A plurality of identification readers installed at regular intervals around the children's youth education facility and receiving the unique identification signal from the electronic anklet type wireless tracking device and transmitting it to the outside when the access of the electronic anklet type wireless tracking device is recognized;
A plurality of image cameras respectively installed to correspond to the plurality of identification readers;
When GPS information and a unique identification signal are received from the plurality of identification readers, facial information of a sex offender is obtained through the imager based on the GPS information, and personal information of a sex offender corresponding to the unique identification signal from the sex offender database Inquiry, and send a warning message notifying the access of the sex offender to a number of terminals registered in the chat robot messaging system capable of interactive KakaoTalk-based interactive communication, or providing personal information and facial video of the sex offender, or A control monitoring server that transmits a message regarding a patrol request or a rescue request to a police-related terminal according to a patrol request or a rescue request from the terminal;
A plurality of terminals registered in the chat robot messaging system; And
Record the personal information and location information of the sex offender received from the control monitoring server in the memory of the dual interface NFC tag, and stored in the memory by tagging the dual interface NFC tag of the smart terminal among the plurality of terminals after recording An electronic device providing the personal information and location information to the smart terminal through wireless local area communication;
Including,
The electronic device receives a message related to a rescue request or a patrol request from the smart terminal by tagging the dual interface NFC tag of the smart terminal through wireless local area communication, records the message in the memory, and records the structure in the memory Access control system for sex offenders of children and youth educational facilities, transmitting a message regarding a request or a patrol request to the control monitoring server through a communication network.
According to claim 1,
The control monitoring server,
When the electronic anklet-type wireless tracking device approaches within a radius of 250 m from the child and youth education facility, the sex offender's database is inquired of personal information of a sex offender corresponding to the unique identification signal received from the electronic anklet-type wireless tracking device,
When the electronic anklet-type wireless tracking device approaches within a radius of 200m from the child and youth educational facility, a warning message is sent to a number of terminals registered in the chat robot messaging system capable of two-way communication based on the KakaoTalk. Transmit,
When the electronic anklet-type wireless tracking device approaches within a radius of 100m from the child and youth education facility, two warning messages are sent to multiple terminals registered in the chat robot messaging system capable of interactive communication based on KakaoTalk twice. Transmit,
When the electronic anklet-type wireless tracking device approaches within a radius of 50m from the child and youth education facility, three warning messages are sent to multiple terminals registered in the chat robot messaging system capable of two-way communication based on KakaoTalk. Transmitting, access control system for sex offenders of children and youth educational facilities.
According to claim 1,
The control monitoring server,
When the electronic anklet-type wireless tracking device approaches within a radius of 50m from the child and youth education facility, three warning messages are sent to multiple terminals registered in the chat robot messaging system capable of two-way communication based on KakaoTalk. Transmit,
A child adolescent who acquires a face image photographed by zooming in on the face of a sex offender through the video camera and transmits it to a plurality of terminals registered in a chat robot messaging system capable of interactive communication based on KakaoTalk. Education facility sex offender access control system.
delete delete A sex offender database storing unique identification signals and personal information about the sex offender; Electronic anklet-type wireless tracking device mounted on a sex offender; A plurality of identification readers installed at regular intervals around the educational facilities for children and adolescents; A plurality of video cameras (CCTVs) respectively installed to correspond to the plurality of identification readers; And a control monitoring server interworking through a communication network with a plurality of terminals registered in a chat robot messaging system capable of two-way communication based on KakaoTalk, as a method for controlling access to sex offenders in children's youth education facilities,
(a) transmitting GPS information and a unique identification signal from the electronic anklet type wireless tracking device to the plurality of identification readers;
(b) receiving the GPS information and the unique identification signal from the identification reader and transmitting them to the control monitoring server;
(c) recognizing the current position of the electronic anklet-type wireless tracking device based on the GPS information in the control monitoring server;
(d) the control monitoring server inquiring and obtaining personal information of a sex offender corresponding to the unique identification signal from the sex offender database;
(e) The control monitoring server notifies a number of terminals registered in the chat robot messaging system capable of two-way communication based on the Kakao Talk according to an access distance based on the current location of the electronic anklet-type wireless tracking device, thereby notifying the access of the sex offender. Transmitting a warning message or providing a facial image of a sexual offender's face;
(f) the control monitoring server receiving a patrol request or a rescue request from one of the plurality of terminals; And
(g) the control monitoring server providing a message regarding a patrol request or a rescue request to a police-related terminal;
Including,
In step (d), the control monitoring server receives the personal information and location information of the sex offender obtained by inquiry and records it in the memory of the dual interface NFC tag, and after recording, the smart terminal of the smart terminal among the plurality of terminals Tagging for a dual interface NFC tag provides the personal information and location information stored in the memory to the smart terminal through wireless local area communication,
In step (f), the electronic device receives a message regarding a rescue request or a patrol request from the smart terminal by tagging the dual interface NFC tag of the smart terminal through wireless local area communication, and records it in the memory. A method for controlling access to a sex offender in an educational facility for children and youth, transmitting a message regarding the rescue request or patrol request recorded in memory to the control monitoring server through a communication network.
The method of claim 6,
In step (d), the control monitoring server,
When the electronic anklet-type radio tracking device approaches within a radius of 250m from the child and youth education facility, a child who obtains by querying the personal information of the sex offender corresponding to the unique identification signal received from the electronic anklet-type radio tracking device from the sex offender database Methods for controlling access to sex offenders in youth education facilities.
The method of claim 6,
In step (e), the control monitoring server,
When the electronic anklet-type wireless tracking device approaches within a radius of 200m from the child and youth educational facility, a warning message is sent to a number of terminals registered in the chat robot messaging system capable of two-way communication based on the KakaoTalk. Transmit,
When the electronic anklet-type wireless tracking device approaches within a radius of 100m from the child and youth education facility, two warning messages are sent to multiple terminals registered in the chat robot messaging system capable of interactive communication based on KakaoTalk twice. Transmit,
When the electronic anklet-type wireless tracking device approaches within a radius of 50m from the child and youth education facility, three warning messages are sent to multiple terminals registered in the chat robot messaging system capable of two-way communication based on KakaoTalk. Transmitting, access control method for sexual offenders in children and youth educational facilities.
The method of claim 8,
In step (e), the control monitoring server,
When the electronic anklet-type wireless tracking device approaches within a radius of 50m from the child and youth education facility, the KakaoTalk-based interactive communication is obtained by acquiring a facial image taken by zooming in on the face of a sex offender through the imager. A method for controlling access to sex offenders in children and youth educational facilities, which is transmitted to a number of terminals registered in a chat robot messaging system.
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