WO2018186672A1 - Système de surveillance d'écoute combiné à un système de prévention du crime et son procédé de surveillance d'écoute - Google Patents

Système de surveillance d'écoute combiné à un système de prévention du crime et son procédé de surveillance d'écoute Download PDF

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Publication number
WO2018186672A1
WO2018186672A1 PCT/KR2018/003950 KR2018003950W WO2018186672A1 WO 2018186672 A1 WO2018186672 A1 WO 2018186672A1 KR 2018003950 W KR2018003950 W KR 2018003950W WO 2018186672 A1 WO2018186672 A1 WO 2018186672A1
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WIPO (PCT)
Prior art keywords
radio wave
eavesdropping
signal
event
tapping
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PCT/KR2018/003950
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English (en)
Korean (ko)
Inventor
한동진
이창익
홍성
신현영
이중희
김대완
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(주) 지슨
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Publication of WO2018186672A1 publication Critical patent/WO2018186672A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/80—Jamming or countermeasure characterized by its function
    • H04K3/86—Jamming or countermeasure characterized by its function related to preventing deceptive jamming or unauthorized interrogation or access, e.g. WLAN access or RFID reading
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/20—Countermeasures against jamming
    • H04K3/22—Countermeasures against jamming including jamming detection and monitoring

Definitions

  • the present invention relates to a wiretap monitoring system and a wiretap monitoring method capable of providing a wiretap monitoring service for a guard area in combination with a security system providing an intrusion surveillance service.
  • eavesdropping detection equipment is always available for monitoring and mobile.
  • the mobile type is an eavesdropping detection device implemented in a form that can be carried by an administrator.
  • Always-on monitoring eavesdropping equipment installs eavesdropping devices in specific spaces to monitor radio waves suspected of eavesdropping for 24 hours.
  • Always-on monitoring eavesdropping device analyzes the radio wave detected by eavesdropping device using wired or wireless network when suspected eavesdropping is detected, and the detected electric wave is the actual audio signal or video signal. Check if eavesdropping occurs by detecting whether it is (Video Signal).
  • the administrator can analyze the radio waves suspected to be directly intercepted by using spectral data, or demodulate the audio or video signals to confirm the actual contents of the detected radio waves. There is no choice but to judge. Above all, mobile equipment has the disadvantage of being very difficult to capture the wiretap site. If eavesdropping is suspected but the current eavesdropping situation or the eavesdropping equipment stops operating for a while, it is difficult to check whether eavesdropping is possible with mobile equipment.
  • the conventional always-on monitoring eavesdropping detection equipment also transmits a suspected eavesdropping radio wave through a network to a control center or an administrator server.
  • the manager confirms whether the eavesdropping is performed by spectrum analysis of the radio wave provided to the manager server or by directly demodulating the audio or video signal. Since the always-on type can always listen to or watch audio or video signals generated in the area to be monitored, privacy infringement or privacy issues can be raised.
  • Korean Patent Laid-Open Publication No. 10-2001-0075965 (Eavesdropper / Sneaky Camera Detection System Using Internet Network and Its Operation Method) is an example of a conventional always-on type tapping detection equipment.
  • the Surveillance System is a system implemented by a sensor installed in the guard area and a controller that collects the signal of the sensor, also known as a mechanical security system, an electronic surveillance system, or simply a security system. It is called.
  • the sensor detects an intruder who has entered the guard area
  • the controller detects an intruder and performs a predetermined operation. For example, intrusion information can be sent to a control server, police station, or administrator, or an alarm can be sounded by a speaker.
  • the security service provided by the security system is also called a machine security service, an unmanned security service, a burglary monitoring service, or an electronic security service, separately from the security or security services performed by a person.
  • Korean Patent Publication No. 10-2001-0075965 (Eavesdropper / Sneaky Camera Detection System Using Internet Network and Its Operation Method)
  • Radio detectors are installed in surveillance zones that require wiretap monitoring, and automatically collect radio waves in the surveillance zone to store basic frequency data.
  • government agencies such as mobile communication, AM / FM broadcasting, and TV broadcasting It stores the list of authorized frequencies registered with the frequency information allowed by the user and the frequency information of the wireless device used by the subscriber, and the 'detection reference information' such as the detection signal reference strength, the number of detection signal occurrences, and the detection signal generation duration.
  • the radio detector detects radio waves in the surveillance area and detects radio waves suspected to be eavesdropping.
  • the radio detector automatically analyzes the detected radio waves by using the tapping signal detection algorithm using the detection criteria information. Generates an event, and stores the frequency information of the radio wave and the audio or video demodulation data (if the detected radio wave is an audio or video signal) according to the tapping event.
  • the radio detector is connected to the main unit.
  • a plurality of radio wave detection devices may be connected to one main device.
  • the asserting value requests the control server to provide a service such as providing an eavesdropping alert to a subscriber by generating eavesdropping state information corresponding to the tapping event and providing the control server when the eavesdropping event is received from the radio detection apparatus. .
  • a service such as providing an eavesdropping alert to a subscriber by generating eavesdropping state information corresponding to the tapping event and providing the control server when the eavesdropping event is received from the radio detection apparatus.
  • the wiretap monitoring system of the present invention may further include a subscriber portable terminal.
  • the subscriber's portable terminal accesses the radio wave detection device while receiving the tapping event from the control server, and if the frequency information stored according to the tapping event from the radio wave detection device and the detected radio wave are an audio or video signal, an audio or video signal. Demodulation data can be received.
  • the subscriber station displays the frequency information on the detected radio wave received from the radio wave detection device and the voice or video demodulation data to the subscriber in case of an audio or video signal to finally determine whether the subscriber is listening or watching.
  • the radio wave detection apparatus is a radio wave detected in a detection signal reference strength of the detection reference information within the surveillance zone or higher (first condition), and the signal strength of the detected signal is a corresponding frequency of the fundamental frequency data.
  • first condition a detection signal reference strength of the detection reference information within the surveillance zone or higher
  • second condition the signal strength of the detected signal is a corresponding frequency of the fundamental frequency data.
  • the basic frequency data is divided into a plurality of frequency bands of the entire frequency band that can be detected by the radio wave detector and set for each of the divided frequency bands, but the measurement is performed in the surveillance zone in the absence of a radio wave suspected to be bugged. It may be set for each of the plurality of frequency bands based on the signal strength of one radio wave. In addition, it is possible to automatically set the detected radio wave after measuring and operating the wireless device used by the subscriber.
  • the authorized frequency list may set frequency information allowed by a government agency such as AM / FM broadcasting and TV broadcasting and frequency information of a wireless device used by a subscriber.
  • the radio wave detection apparatus may satisfy the first condition, the second condition, and the third condition, and if the detected radio wave is a voice signal, the radio wave detection device may recognize the audio sampling waveform data and the detected radio wave. If it is determined to be the same through the correlation analysis of the voice demodulation data (fourth condition), it may be finally determined as a radio wave suspected to be bugged.
  • the wiretap monitoring system may be implemented in combination with an intrusion surveillance service.
  • the assertion value may provide an intrusion monitoring service that generates intrusion status information using at least one intrusion monitoring sensor and provides the intrusion status information to the control server.
  • the radio wave detection device may provide the tapping event to the main device in the form of a contact signal, and the assertion value may receive a contact signal of the radio wave detection device through a connection terminal for connecting the intrusion monitoring sensor.
  • the tapping state information may include a location code assigned to each connection location on the connection terminal to distinguish the plurality of radio wave detection devices.
  • the wiretap monitoring system may be implemented in a form without a control server.
  • the wiretap monitoring system includes a main device, a radio wave detection device, and a subscriber portable terminal.
  • the subscriber's portable terminal receives the tapping event from the main device, accesses the radio wave detection device, and stores frequency information stored in accordance with the tapping event from the wave detection device, and audio or video demodulation data when the detected radio wave is an audio or video signal. Received and displayed to the subscriber so that the subscriber can listen or watch the final determination of eavesdropping.
  • the present invention also extends to a wiretap monitoring method of a wiretap monitoring system.
  • the main device installed in the monitoring area monitors the intrusion by using at least one intrusion monitoring sensor, and generates an intrusion state information and provides the control server to the control server when it is determined that the intrusion situation is determined.
  • the wiretap monitoring system of the present invention may be implemented as a single system having a radio wave detection device and a subscriber portable terminal. At this time, the subscriber portable terminal receives the eavesdropping event directly from the radio wave detection device and accesses the radio wave detection device.
  • the tapping monitoring system of the present invention can perform tapping monitoring for a monitoring area by performing a tapping response procedure only in response to a radio wave detection device installed in the monitoring area generating a tapping event. Therefore, the administrator does not need to continuously monitor the detection of the eavesdropping signal, so that one watcher can monitor a plurality of monitoring zones at the same time, and a service consumer who needs eavesdropping monitoring provides a 24-hour monitoring service at a relatively low cost. I can receive it.
  • the radio wave detection apparatus of the present invention may detect whether radio waves in the surveillance zone itself and analyze the detected radio waves using an eavesdropping signal detection algorithm to determine whether the corresponding radio wave is an eavesdropping signal.
  • the wiretap monitoring system of the present invention can provide a normal intrusion monitoring service together with a security system providing an intrusion monitoring service. This aspect is useful because it can provide monitoring service to wiretap monitoring service using existing security system system.
  • FIG. 1 is a block diagram of a wiretap monitoring system of the present invention
  • FIG. 2 is a block diagram illustrating a first client system of FIG. 1;
  • FIG. 3 is a block diagram showing a main device and a radio wave detection device of the present invention.
  • FIG. 4 is a block diagram showing a subscriber portable terminal of the present invention.
  • 5 is a flowchart provided to explain the wiretap monitoring method of the present invention.
  • the wiretap monitoring system 100 of the present invention includes a control server 110, a plurality of client systems (139a, 130b, 130c), and a network 150 connecting them.
  • the control server 110 may be connected to a plurality of client systems (139a, 130b, 130c) to provide a wiretap monitoring service for a plurality of subscribers, and may also provide an intrusion monitoring service as needed.
  • each of the client systems 139a, 130b, and 130c includes a main controller 131, at least one radio wave detector 133 coupled to the main device 131, and a subscriber station 170. It is a combination of security system and wiretap monitoring system.
  • Each client system 139a, 130b, 130c may be a different subscriber area, or a plurality of client systems may be one subscriber area.
  • the main device 131 and the control server 110 while providing an intrusion monitoring service while providing a wiretap monitoring service, but the main device 131 and the control server 110 is a dedicated device for the wiretap monitoring service It's okay.
  • the client system 139a, 130b, 130c includes at least one Security Area (x1, x2) in which an intrusion surveillance service is provided and at least one Monitoring Area in which an eavesdrop surveillance service is provided ( R1) can be set.
  • client systems 139a, 130b, 130c can provide both intrusion surveillance and eavesdropping surveillance services, the guard zones x1, x2 and the eavesdropping surveillance zone R1 need not be identical. However, when a plurality of radio wave detection devices 133 are connected to one main device 131, a plurality of wiretap monitoring zones R1 are set.
  • the network 150 may be an Internet network or a dedicated line according to a service provider's dedicated communication protocol, and in terms of a communication channel, it may be a wired LAN, a wireless LAN, or a mobile communication network. , CDMA, GSM, etc.), and public switched telephone networks (PSTNs). However, the public telephone network or the dedicated network is not applied to the network between the control server 110 and the subscriber portable terminal 170, but the Internet is applied.
  • the control server 110 belongs to an area of a service provider that provides a monitoring service including a wiretap monitoring service and / or an intrusion monitoring service, and may simultaneously monitor a plurality of monitoring zones.
  • the control server 110 provides the wiretap monitoring service of the present invention based on the status information provided by the main device 131 for each subscriber.
  • the subscriber basic information for each subscriber area unit is managed.
  • the basic information of the subscriber includes personal information of the subscriber, information on the mobile terminal of the subscriber, setting information (number of radio wave detection devices, actual location of the location code) for the monitoring area described below.
  • a plurality of main devices 131 and a radio wave detection device 133 may be arranged in one subscriber area.
  • the control server 110 includes a control function 115.
  • the control function unit 115 monitors the operation state and the guard state of the main device 131 and whether or not the characteristic of the present invention by using the 'status information' provided by the main device 131 installed in each subscriber area. Provides status information to the subscriber (ie, subscriber portable terminal 170).
  • the control function unit 115 that receives the tapping status information from the main device 131 transmits a tapping event to the subscriber portable terminal 170.
  • the main device 131 includes a first network interface 201, a sensor receiver 203, and a main device controller 205, and are installed in the guard zones x1 and x2 to monitor intrusions. And a radio wave detection device 133 installed in the monitoring area R1.
  • the first network interface 201 is a wired or wireless communication network interface that can be connected to the network 150, and can transmit and receive data with the control server 110.
  • the sensor receiving unit 203 has a connection terminal 203a for connecting the sensor 135 and the radio wave detection device 133 to provide a signal provided by the sensor 135 and the radio wave detection device 133 to the main device controller 205.
  • the sensor 135 is a kind of switch, and the radio wave detection device 133 also provides a contact operation (switching operation) in the same manner as the sensor 135.
  • the at least one sensor 135 may be connected to the sensor receiver 203 by connecting at least one switch in series to form a closure, and the contact signal unit 215 of the radio wave detection device 133 may also close the closure. It is connected to the sensor receiver 203 in a manner to form.
  • the sensor receiver 203 detects the operation of the switching (contact) of the radio wave detection device 133 or the sensor 135 to receive a signal.
  • the sensor 135 and the radio wave detection device 133 may not be connected to the same closed circuit.
  • the sensor receiver 203 needs to provide power for the sensor operation. However, since the radio wave detector 133 operates on its own power, the sensor receiver 203 uses the radio wave detector ( It is not necessary to provide the operating power of 133. However, the sensor receiver 203 may provide a current for detecting a switching operation of the radio wave detector 133. have. As described below, at least one switching signal or contact signal provided by the radio wave detection device 133 corresponds to delivering an occurrence of a 'tap event'.
  • the main unit controller 205 controls the overall operation of the main unit 131.
  • the main device controller 205 generates the state information for the monitoring zone according to the sensor signal received from the sensor receiver 203 and provides it to the control server 110.
  • the host device control unit 205 receives the tapping event through the switching operation of the radio wave detection device 133
  • the master device controller 205 generates preset 'tapping state information' and provides it to the control server 110.
  • the eavesdropping status information may include a subscriber identification number, a status code indicating that the eavesdropping event, an event occurrence time, and a location code of the connection terminal 203a to which the radio detection apparatus 133 in which the eavesdropping event occurred are connected.
  • the location code is a code assigned to each connection location on the connection terminal 203a.
  • the location code is used to distinguish the radio wave detection device 133 and the sensor 135 when a plurality of radio wave detection devices 133 are connected.
  • the control server 110 may recognize that a situation of suspected eavesdropping occurs in the monitoring area by receiving eavesdropping status information.
  • the host device controller 205 may store and manage event history information including generation of tapping events and delivery to a control server.
  • the radio wave detection device 133 is installed in the surveillance zone to detect radio waves in the surveillance zone, and analyzes the detected radio waves using a tapping signal detection algorithm to determine whether the signal is an eavesdropping signal. If it is determined that the eavesdropping signal is generated, the tapping event is transmitted to the main device 131 by generating a tapping event and providing a contact signal to the main device 131 according to the tapping event.
  • the radio detector 133 transmits the frequency information of the detected radio wave to the subscriber portable terminal 170 stored according to the tapping event. If the received radio wave is an audio or video signal, demodulated data obtained by demodulating the audio or video signal is also transmitted to the subscriber portable terminal 170.
  • the radio wave detection device 133 includes a signal processor 211, a second network interface 213, a contact signal unit 215, a voice recognition unit 217, and a detector control unit 219. .
  • the signal processor 211 receives the radio wave in the surveillance zone R1 using the antenna ANT to detect the eavesdropping in the surveillance zone R1, and transmits the radio wave to the detection apparatus controller 219.
  • the detection device controller 219 determines whether the signal received by the signal processor 211 is a signal suspected to be bugged.
  • the second network interface 213 is a wireless communication network interface connected to the third network interface 307 of the subscriber portable terminal 170.
  • the second network interface 213 is a wireless LAN, Bluetooth, or Zigbee.
  • the communication network may correspond.
  • the contact signal unit 215 is connected to the connection terminal 203a of the main device 131 by using a cable or a wire, and performs contact control (switching) by performing a switch control according to the tapping event under the control of the detection device controller 219.
  • the signal is provided to the main device 131.
  • the switch (contact point) of the contact signal unit 215 is in a switch open state in a normal state, and is switched to a switch closed state when a tapping event occurs. Therefore, when the contact signal of the radio wave detection device 133 is switched to correspond to the closing of the switch, the main device 131 determines that the tapping event has occurred in the radio wave detection device 133.
  • the contact of the contact signal unit 215 may be switched to the switch open state when the tapping event occurs while the switch is in the closed state in the normal state.
  • the voice recognition unit 217 recognizes the voice in the surveillance zone by using a microphone (not shown) and transfers the voice sampling waveform data to the detection device controller 219.
  • the detector control unit 219 controls the overall operation of the radio wave detector 133.
  • the detection apparatus controller 219 generates an eavesdropping event by determining whether an electric wave provided by the signal processor 211 is an eavesdropping signal using an eavesdropping signal detection algorithm.
  • the detection device controller 219 determines whether the corresponding radio wave is an eavesdropping signal using preset 'detection reference information'.
  • the 'detection reference information' includes basic frequency data, applied frequency list, detection signal reference strength, detection signal occurrence count, detection signal generation duration, and the like.
  • the fundamental frequency data includes information on at least one frequency collected in the wiretap monitoring area.
  • the fundamental frequency data is a reference signal strength of a signal existing in the surveillance zone without eavesdropping, and the frequency band subdivided into a plurality of frequency bands and subdivided into a plurality of frequency bands as described below. Reference signal strength can be set for each band.
  • the list of licensed frequencies includes information on frequencies allowed by government agencies and on the frequencies of wireless devices used by subscribers.
  • the detection signal reference strength is the strength of the signal that is the criterion of the eavesdropping signal.
  • the detection apparatus control unit 219 first determines whether the corresponding radio wave is a radio wave having a detection signal reference intensity of 'detection reference information' or more (first condition). When the first condition is completed, the detector control unit 219 corresponds to a case where the signal strength of the detected signal is greater than or equal to the reference signal strength of the corresponding frequency of the fundamental frequency data and the detected signal is not in the authorized frequency list (second condition). If the detection signal generation time of the predetermined detection reference information is generated continuously or more than the detection signal generation duration of the preset detection reference information (third condition), it is determined as a tapping signal.
  • the detection apparatus controller 219 may perform audio demodulation on the detected radio wave received from the signal processing unit 211 and the audio sampling waveform data received from the voice recognition unit 217. Correlation analysis between the data may determine that the voice sampling waveform data and the voice demodulation data are the same (fourth condition). The detailed determination method will be described again below.
  • the detection device controller 219 stores frequency information on the detected signal and audio or video demodulation data when the detected signal is an audio or video signal (not shown) or a storage medium (not shown). And (2) control the contact signal unit 215 to provide a contact signal corresponding to the tapping event to the main device 131. (3) Also, when the subscriber portable terminal 170 accesses through the second network interface 201, the subscriber portable terminal 170 taps the mobile terminal 170 after performing subscriber authentication whether the subscriber portable terminal 170 is a registered subscriber. According to the event, the frequency information of the stored detected signal and the detected signal is an audio or video signal, the audio or video demodulation data is provided so that the subscriber can listen or watch and finally confirm whether it is an eavesdropping signal.
  • the mobile terminal 170 may be any smart phone, a personal digital assistant (PDA), a tablet computer, or any other portable personal terminal, and various functions (telephone functions) in addition to the functions suggested by the present invention. , Camera functions, location recognition, etc.) may be included. However, a configuration which is not essential to the description of the present invention among these configurations is not shown in the drawings or described.
  • the subscriber portable terminal 170 is connected to a display unit 301 for displaying various kinds of information, a speaker 303, and a mobile communication network in order to perform the characteristic monitoring method of the present invention.
  • a mobile communication interface 305 capable of receiving a message from an administrator of the control center 110 or the control center, a third network interface 307 connected to the first network interface 201 of the radio wave detection device 133, and a terminal.
  • the controller 310 is included.
  • the terminal control unit 310 controls the overall operation of the subscriber portable terminal 170, and specifically includes an eavesdropping confirmation unit 311 to perform the tapping detection method of the present invention.
  • the terminal control unit 310 may be interpreted as a configuration specially installed for the present invention, but in general, may be a configuration installed to perform a main or basic function (eg, telephone, communication, etc.) of the subscriber portable terminal 170. .
  • the terminal controller 310 when the terminal controller 310 is configured to perform the basic functions of the subscriber portable terminal 170, the terminal controller 310 is a processor chip which is hardware basically possessed by the subscriber portable terminal 170. And, it may be functionally instructed to the configuration implemented by an operating system (OS) operating based on the chip.
  • OS operating system
  • the conventional terminal to which the present invention is not applied may also include a terminal controller 310.
  • the eavesdropping checker 311 may be installed in an existing terminal for the implementation of the present invention as an application (Application) that is software operating on the operating system program.
  • Application an application
  • the application may be software recorded on a computer-readable storage medium (not shown) provided by the software distribution server (not shown), the subscriber portable terminal 170 via the network 150, the software distribution server It is also possible to connect to (not shown) to download and install the application (or software).
  • the eavesdropping confirmation unit 311 may be in an always operating state or may start an operation by a user, and receives the tapping event information from the control server 110 through the mobile communication interface 305.
  • the tapping check unit 311 After the tapping check unit 311 receives the tapping event from the control server 110 and is connected to the radio wave detection device 133 through the third network interface 307 under the control of the subscriber, the radio wave detection device 133 Subscriber authentication can be requested by providing the subscriber identification number.
  • the radio detection device 133 may include frequency information on the detected radio wave and audio or video demodulation data according to the tapping event (when the detected radio wave is an audio or video signal). Is provided to the eavesdropping confirmation unit 311 of the mobile terminal 170 of the subscriber.
  • the eavesdropping check unit 311 may read the frequency information provided from the radio wave detection device 133 and the audio or video demodulation data (when the detected radio wave is an audio or video signal) through the display unit 301 or the speaker 303. By outputting to the subscriber, the subscriber can check whether the corresponding tapping event is an actual tapping signal.
  • the wiretap monitoring method of the wiretap monitoring system 100 will be described with reference to FIG. 5.
  • the wiretap monitoring system 100 may be implemented as a system dedicated to wiretap monitoring, or may be provided with an intrusion monitoring service.
  • the detection device controller 213 determines whether the radio wave is an eavesdropping signal using an eavesdropping signal detection algorithm (S401). ).
  • the detection device controller 219 If there is a radio signal suspected to be eavesdropping, the detection device controller 219 generates an eavesdropping event and transmits it to the main device 131 as a contact signal through the contact signal unit 215 (S403). On the other hand, the detector control unit 219 stores the frequency information on the radio wave that caused the eavesdropping event, and also stores the audio or video demodulation data if the detected radio wave is an audio or video signal.
  • control server S405>
  • the main device 131 receives a contact signal from the radio detection device 133, the main device 131 provides the monitoring server 110 with the tapping status information according to the tapping event.
  • the main device control unit 205 is a sensor. When the contact signal of the corresponding terminal of the receiver 203 is checked, it may be recognized that a tapping event has occurred.
  • the control function 111 of the control server 110 When the control function 111 of the control server 110 receives the eavesdropping state information from the main device 131, the control function unit 111 analyzes the corresponding eavesdropping state information and displays it in a way that can be confirmed to the administrator, and also to the subscriber portable terminal 170. Forward tapping events. In order to transmit the tapping event, the control server 110 may be connected to a plurality of main devices 131 for monitoring a plurality of subscriber areas, so that the subscriber portable terminal 170 may be connected using the subscriber identification number included in the tapping status information. Extract the information. According to an embodiment, an administrator operating the control server 110 may directly call the subscriber portable terminal 170 to explain the situation or send a short message.
  • the eavesdropping confirmation unit 311 of the subscriber portable terminal 170 connects to the radio wave detection device 133.
  • the eavesdropping check unit 311 in the always operating state may connect to the radio wave detection device 133 by itself.
  • the eavesdropping confirmation section 311 can connect to the radio wave detection device 133.
  • the connection between the subscriber station 170 and the radio wave detection device 133 is established between the second network interface 213 and the third network interface 307 and includes Wi-Fi, Bluetooth, and Zigbee. A wireless communication network such as Zigbee may be used.
  • the wiretap checking unit 311 requests subscriber authentication by providing a subscriber identification number to the radio detector 133 when connected to the radio detector 133 (S409).
  • the detector control unit 219 authenticates the subscriber by using the subscriber identification number, and when the subscriber authentication is completed, frequency information and voice or video demodulation data (detected radio wave is an audio or video signal) for the stored radio wave according to the tapping event. If yes) is provided to the subscriber portable terminal 170 (S411).
  • the eavesdropping checker 311 of the mobile subscriber station 170 provides the subscriber with frequency information on the detected radio wave in a identifiable state through the display unit 301 and the speaker 303, and the detected radio wave is an audio or video signal. Provide audio or video demodulation data in a state where it can be listened or viewed. The subscriber finally determines whether the tapping event is due to actual tapping (S413).
  • the subscriber may notify the call back to the control center or the eavesdropping checker 311 may provide a corresponding message to the control server 110. This allows field crews to be dispatched to surveillance zones to closely inspect eavesdropping.
  • the wiretap monitoring system 100 may operate as a wiretap and security system that provides an intrusion monitoring service together with a wiretap monitoring service.
  • An intrusion monitoring sensor 135 is installed in the guard zones x1 and x2 for the intrusion monitoring service, and the sensor 135 is connected to the connection terminal 203a of the main device 131 like the radio wave detection device 133. .
  • the main device 131 detects the intrusion monitoring sensor 135, the main device 131 generates an intrusion event and provides the intrusion state information corresponding to the intrusion event to the control server 110.
  • the control server 110 provides the detailed information according to the intrusion status information by the administrator of the control center, the administrator delivers the dispatch instruction to the field dispatch workers or notify the police and the like.
  • the radio wave detection device 133 should be able to generate an eavesdropping event on its own unlike the prior art. Since the radio signal according to the eavesdropping uses a frequency other than the frequency authorized for use in the corresponding space, the eavesdropping monitoring is a process of detecting an unusual frequency.
  • the radio wave detection apparatus 133 detects radio waves that are equal to or greater than the detection signal reference strength of the predetermined detection reference information among the radio waves existing in the surveillance zone (first condition). When a radio wave of more than the detection signal reference strength is detected, the signal strength of the detected radio wave is equal to or greater than the corresponding frequency signal strength of the basic frequency data of the detection reference information and is not in the list of authorized frequencies (second condition). If it occurs continuously more than the detection signal generation frequency of the information and occurs more than the detection signal generation duration of the predetermined detection reference information (third condition) it can be determined as a tapping signal.
  • the audio sampling waveform data received by the voice recognition unit 217 and the voice demodulation data of the detected radio wave from the signal processor 211 are received and correlated. ) If it is determined to be the same through analysis (fourth condition), it may be finally determined by eavesdropping.
  • At least one condition selected from the second condition to the fourth condition when at least one condition selected from the second condition to the fourth condition is completed, it may be determined as a tapping signal, and the order between the plurality of selected conditions is not important.
  • the fundamental frequency data in the second condition may be set in more detail within the entire frequency band that can be detected by the radio wave detector 133.
  • the entire frequency band detectable by the radio detector 133 is subdivided into a plurality of frequency bands. For example, whether to subdivide by tens of kHz or to tens of MHz may be determined according to the detection resolution of the radio detector 133.
  • Reference signal strengths can be set individually for each of the divided frequency bands.
  • the signal strength in the subdivided frequency band may be directly measured and set for each frequency band in the monitoring zone R1, and may be set by adding a relative signal strength having a predetermined value in addition to the measured signal strength.
  • signal strengths are individually set for each of the subdivided frequency bands, various types of wiretap signals that cannot be predicted can be detected.
  • the signal strength of the detected radio wave may be set in the corresponding frequency band of the fundamental frequency data.
  • the list of authorized frequencies in the second condition is used to compare the frequency information allowed by the government agencies such as mobile communication, AM / FM broadcasting, TV broadcasting, etc. and the frequency information of the wireless device used by the subscriber in order to compare the authorized frequencies. Can be set.
  • the wiretap monitoring system of the present invention is provided with a radio detection device 133 and the subscriber portable terminal 170 It may be implemented alone.
  • the detection device control unit 219 of the radio wave detection device 133 transmits an eavesdropping event directly to the subscriber portable terminal 170 using the second network interface 213, and checks the tapping of the detection device control unit 219.
  • the unit 311 directly receives the tapping event through the third network interface 307. After receiving the tapping event, the operation of the tapping checking unit 311 may be described in the same manner as the operations of steps S409 to S413 of FIG. 5.

Abstract

L'invention concerne un système de surveillance d'écoute combiné à un système de prévention du crime et son procédé de surveillance d'écoute. Le système de surveillance d'écoute selon la présente invention peut mettre en œuvre une surveillance d'écoute par rapport à une zone de surveillance en conduisant une procédure de réponse d'écoute lorsqu'un dispositif détecteur d'ondes radio installé dans la zone de surveillance génère un événement d'écoute. En combinant le système de surveillance d'écoute à un système qui assure un service de surveillance d'intrusion, un service de surveillance d'intrusion peut être assuré en même temps.
PCT/KR2018/003950 2017-04-07 2018-04-04 Système de surveillance d'écoute combiné à un système de prévention du crime et son procédé de surveillance d'écoute WO2018186672A1 (fr)

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KR1020170045269A KR101791500B1 (ko) 2017-04-07 2017-04-07 방범 시스템과 결합된 도청 감시 시스템 및 그 도청 감시 방법

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KR20210121902A (ko) * 2020-03-31 2021-10-08 주식회사 케이앤어스 휴대 가능한 설치형 도청 감시 시스템 및 그 도청 감시 방법
KR102470884B1 (ko) * 2020-09-16 2022-11-28 한국전자기술연구원 인공지능을 이용한 몰래카메라 탐지 방법 및 그 시스템
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