Surreptitious photographing detection device and surreptitious photographing detection method

Abstract

To provide a technology capable of detecting surreptitious photographing with high accuracy.SOLUTION: A surreptitious photographing detection device includes: an electromagnetic wave state acquisition unit that acquires a state of electromagnetic waves for communication from an electromagnetic wave detection unit that detects the state of electromagnetic waves for communication in a target booth; a surreptitious photographing determination unit that compares the detected state of the electromagnetic waves by the electromagnetic wave detection unit with a reference state which is a state of the electromagnetic waves without a surreptitious camera and determines that there is a possibility of surreptitious photographing when the detected state has more electromagnetic waves for communication than the reference state; and an output control unit that outputs an alarm when there is a possibility of surreptitious photographing.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a voyeurism detection device and a voyeurism detection method. [Background technology]

[0002] In recent years, small, high-performance cameras have become widespread and have been used to take voyeuristic photographs in restrooms, shower rooms, etc. In particular, cameras that transmit voyeuristic photographs wirelessly do not require a recording medium for storing the voyeuristic photographs within the camera, and can be made smaller. In Patent Document 1, images of the inside of a restroom booth are compared before and after a user enters the booth, and if an object that was not there before the user enters the booth is left behind after the user leaves, it is determined that an abnormality has occurred, such as the installation of a voyeuristic camera. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2022-2401 Summary of the Invention [Problem to be solved by the invention]

[0004] When determining whether or not there is a hidden camera based on images inside a toilet booth, as in Patent Document 1, there is a problem that small cameras or cameras hidden in fixtures such as waste bins do not appear in the images or are too small to be difficult to detect.

[0005] Therefore, an object of the present invention is to provide a technique for detecting surreptitious photography with high accuracy. [Means for solving the problem]

[0006] In order to solve the above problems, the voyeurism detection device according to the present invention comprises: an electromagnetic wave state acquiring unit that acquires a state of the electromagnetic wave for communication from an electromagnetic wave detecting unit that detects a state of the electromagnetic wave for communication in the target booth; a voyeurism determination unit that compares the detection state of the electromagnetic waves by the electromagnetic wave detection unit with a reference state, which is a state of electromagnetic waves in the absence of a voyeurism camera, and determines that there is a possibility of voyeurism when the detection state shows an increase in electromagnetic waves for communication compared to the reference state; an output control unit that outputs an alarm when it is determined that there is a possibility of the voyeurism; Equipped with.

[0007] the voyeurism detection device includes an entry / exit detection unit that detects entry and exit of a user to and from the target booth, The voyeurism determination unit may determine that there is a possibility of voyeurism when the number of electromagnetic waves for communication in the detection state is greater than that in the reference state after the user has left.

[0008] The voyeurism determination unit may determine that there is a possibility of voyeurism when a state in which the number of electromagnetic waves for communication in the detection state is greater than that in the reference state continues for a predetermined period of time or longer.

[0009] the voyeurism detection device includes a plurality of the electromagnetic wave detection units, the plurality of electromagnetic wave detection units being arranged to detect the electromagnetic waves at different positions from one another; The electromagnetic wave detection device may further include a transmission position identification unit that identifies a transmission position of the electromagnetic waves based on position information of the plurality of electromagnetic wave detection units and the intensity of the electromagnetic waves detected by each electromagnetic wave detection unit.

[0010] The voyeurism determination unit may determine that there is a possibility of voyeurism when the electromagnetic waves having the inside of the target booth as the transmission position are increased in the detection state compared to the reference state.

[0011] acquiring a state of electromagnetic waves for communication from an electromagnetic wave detection unit that detects a state of electromagnetic waves for communication in a target booth; comparing a detection state of the electromagnetic waves by the electromagnetic wave detection unit with a reference state, which is a state of electromagnetic waves in the absence of a voyeur camera, and determining that there is a possibility of voyeurism when the detection state shows an increase in electromagnetic waves for communication compared to the reference state; outputting an alarm when it is determined that there is a possibility of the voyeurism; The control unit executes the above.

[0012] In order to solve the above problems, the method for detecting voyeurism according to the present invention comprises the steps of: acquiring a state of electromagnetic waves for communication from an electromagnetic wave detection unit that detects a state of electromagnetic waves for communication in a target booth; comparing a detection state of the electromagnetic waves by the electromagnetic wave detection unit with a reference state, which is a state of electromagnetic waves in the absence of a voyeur camera, and determining that there is a possibility of voyeurism when the detection state shows an increase in electromagnetic waves for communication compared to the reference state; outputting an alarm when it is determined that there is a possibility of the voyeurism; The control unit executes the above.

[0013] The present invention may also be a restroom management program for causing a computer to execute the above-mentioned voyeurism detection method. Furthermore, the restroom management program may be recorded in a computer-readable storage medium.

[0014] Here, a computer-readable storage medium refers to a storage medium that stores information such as data and programs through electrical, magnetic, optical, mechanical, or chemical action and can be read by a computer. Examples of such storage media that can be removed from a computer include flexible disks, magneto-optical disks, CD-ROMs, CD-R / Ws, DVDs (registered trademark), DATs, 8mm tapes, memory cards, etc. Also, examples of storage media that are fixed to a computer include hard disks and ROMs (read-only memories). Effect of the Invention

[0015] According to the present invention, a technique for detecting surreptitious photography with high accuracy can be provided. [Brief description of the drawings]

[0016] [Figure 1]FIG. 1 is a diagram showing a configuration of a secret photography detection system according to an embodiment. [Diagram 2] FIG. 2 is a perspective view showing an example of a toilet booth equipped with a toilet bowl. [Diagram 3] FIG. 3 is a front view showing the toilet booth with the door closed. [Figure 4] FIG. 4 is a front view showing the toilet booth with the door open. [Diagram 5] FIG. 5 is a diagram illustrating an example of the controller. [Figure 6] FIG. 6 is a diagram showing the configuration of the management server (secret photography detection device). [Figure 7] FIG. 7 is a diagram showing a process flow of a secret photography detection method executed by the control unit of the management server in accordance with the secret photography detection program. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] First Embodiment DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Note that the preferred embodiments are merely examples of the present invention, and the configuration of the present invention is not limited to the following examples.

[0018] FIG. 1 is a diagram showing the configuration of a voyeurism detection system 100 according to this embodiment. The voyeurism detection system 100 of this embodiment detects voyeurism based on the state of electromagnetic waves for communication, targeting a toilet booth (toilet room) 14 provided in a toilet facility 10. 00 has an electromagnetic wave detection unit 11, an entrance / exit sensor 51, a management server (voyeurism detection device) 44, and an alarm unit 45, and the electromagnetic wave detection unit 11, the entrance / exit sensor 51, and the alarm unit 45 are provided in a restroom facility 10, and the management server 44 is provided in a location separate from the restroom facility 10. The electromagnetic wave detection unit 11, the entrance / exit detection unit 12, and the alarm unit 45 are connected to the management server 44 via a network 5 such as the Internet or a LAN (Local Area Network). The management server 44 may also be connected to an administrator terminal 3 via the network 5.

[0019] The management server 44 determines the possibility of voyeurism based on the detection results of the electromagnetic wave detection unit 11 and the entrance / exit detection unit 12, and if it determines that there is a possibility of voyeurism, outputs an alarm to the administrator terminal 3 and the alarm unit 45. Note that, although an example in which the voyeurism detection system 100 does not include the administrator terminal 3 is shown in FIG. 1, the voyeurism detection system 100 may include the administrator terminal 3.

[0020] The toilet facility 10 is a public toilet used by an unspecified number of users (public) in, for example, a commercial facility such as a department store, a station, a parking area or a service area on a highway, etc., and is provided in each of a plurality of buildings or on each of a plurality of floors of a building. The toilet facility 10 of this embodiment has a plurality of toilet booths 14, and each toilet booth 14 is provided with an electromagnetic wave detection unit 11, an entrance / exit detection unit 12, and an alarm unit 45. The electromagnetic wave detection unit 11 and the alarm unit 45 may be provided for each of the plurality of toilet booths 14, rather than for each toilet booth. Also, it is preferable that a plurality of electromagnetic wave detection units 11 are provided at different positions in one toilet facility 10.

[0021] Fig. 2 is a perspective view showing an example of a toilet booth 14 equipped with a toilet bowl 41, Fig. 3 is a front view showing the toilet booth 14 with the door 9 closed, and Fig. 4 is a front view showing the toilet booth 14 with the door 9 open. The toilet booth 14 is surrounded on three sides by a pair of left and right side walls 14L, 14R and a rear wall 14B, and has a front wall 14M including the door 9 at the front. A toilet bowl 41 is installed in the toilet booth 14 surrounded by these side walls 14L, 14R, rear wall 14B, and front wall 14M. The walls 14L, 14R, 14B, and 14M surrounding the toilet booth 14 are arranged from the floor 14F. Although the height may be such that the height reaches the ceiling 14C, in this embodiment, as shown in Fig. 4, a space is provided between the left and right side walls 14L, 14R and the door 9 and the ceiling 14C to allow air to circulate. A part of the front wall 14M is a wall M1 fixed to one of the side walls 14L, 14R (side wall 14R in the example of Fig. 2), and an opening between the wall M1 and the side walls 14L, 14R forms the entrance 4. The door 9 is attached to the entrance 4 by a hinge (not shown) so as to be able to open and close.

[0022] Here, the left and right refer to the left and right sides when facing the entrance 4 from outside the toilet booth 14. In addition, in the toilet booth 14, for example, the direction toward the entrance 4 as seen from the toilet bowl 41 is referred to as the front, and the direction toward the rear wall 14B as seen from the toilet bowl 41 is referred to as the rear. In addition, in the toilet booth 14, for example, the direction toward the ceiling 14C as seen from the seat of the toilet bowl 41 is referred to as the up, and the direction toward the floor 14F as seen from the seat of the toilet bowl 41 is referred to as the down. The material of the walls 14L, 14R, 14B, and 14M of the toilet booth 14 is not particularly limited, but may be a metal plate, a metal sheet, a conductive synthetic resin sheet, a synthetic resin sheet with a metal film formed thereon, a metal mesh, or the like, which is a member that suppresses the transmission of electromagnetic waves, and may have a so-called electromagnetic shield. The electromagnetic shield may be connected to an earth terminal or the like and grounded. In this embodiment, the electromagnetic wave detection unit 11 is provided in each toilet booth 14 surrounded by these walls 14L, 14R, 14B, and 14M.

[0023] A lock 91 is provided on the right end of the door 9, which can be locked and unlocked by the user in the toilet booth. When locked, the lock 91 engages with a receiving device (not shown) on the wall M1 to prevent the door from being opened. The lock 91 is not limited to a configuration that engages with the wall M1, and may be configured to engage with the left side wall 14L, or with the floor 14F, ceiling 14C, etc., as long as it can close the door 9. It is acceptable. The lock 91 may be omitted if a mechanism for driving the door 9 to open and close in response to the operation of an open / close switch by the user is provided, and the door 9 is not opened until the user operates the door to open. The door 9 is also provided with an open / close sensor 92 for detecting whether the lock 91 is locked or not, or whether the door 9 is closed or not. When the toilet booth 14 is used, the door 9 is closed and locked after the user enters the room. Therefore, the detection result of the open / close sensor 92 is used to determine whether the toilet booth 14 is in use or not. In this embodiment, the open / close sensor 92 is one form of the entry / exit sensor 51 for detecting the entry / exit state of the user.

[0024] As shown in FIG. 3, each toilet booth 14 is provided with toilet equipment 1 such as a toilet bowl 41, a toilet seat device 42, a controller 43, etc., as well as a user sensor 111, an electromagnetic wave detection unit 11, and an alarm unit 45.

[0025] The user sensor 111 detects a user in the toilet booth 14. In this embodiment, the user sensor 111 is one form of the entrance / exit sensor 51 that detects the entry / exit state of a user. The user sensor 111 includes, for example, an imaging lens, an imaging element that converts a light image formed by the imaging lens into electronic data (image), and an image processing unit that extracts the contour (outline) of an object captured in the image and generates a contour image in which information of parts other than the contour is omitted. The user sensor 111 may compare an image of the inside of the toilet booth 14 when no user is present with an image when a user enters the booth, detect the difference as a user, and extract the contour. The user sensor 111 may also identify a user (the entire user, head, etc.) in the image by pattern matching and extract the contour. Furthermore, the user sensor 111 may identify a user (the entire user, head, etc.) in the image by AI and extract the contour. For example, an image captured by an imaging element may be input to a mathematical model that has been machine-learned to identify people, identify an area in which the user is captured, and extract the contour. Without being limited thereto, the user sensor 111 may be a human sensor, a camera, a ToF (Time of Flight) sensor, or the like, as long as it can detect the user's information used by the management server 44. Furthermore, the user sensor 111 may detect the size of the user's head, the height of the user's back, and the height at which the user's head is located in the toilet booth 14. The user sensor 111 is provided on the ceiling 14C of the toilet booth 14, and captures an image of the toilet booth from the ceiling side. In this example, one user sensor 111 is provided on the ceiling 14C, but this is not limiting, and the user sensor 111 may be provided on the upper part of the rear wall 14B, 14L, or 14R, and captures an image of the toilet booth from the ceiling side. Furthermore, a plurality of user sensors 111 may be provided at these locations.

[0026] The toilet seat device 42 is provided on the Western-style toilet 41, and has a function of heating the seat surface on which the user sits and a washing function of discharging warm water to wash the user's anus and private parts. The toilet seat device 42 also has a seating sensor 421 that detects whether the user is seated or not, and controls whether or not to discharge the warm water based on the detection result of the seating sensor 421 so that when the user is seated and a warm water discharge button (not shown) is pressed, the warm water is discharged, and when the user is not seated and the warm water discharge button (not shown) is pressed, the warm water is not discharged. Based on the detection result of the seating sensor 421, when the user is not seated, the temperature of the seat surface is lowered and a power saving mode is set. The toilet 41 is not limited to a Western-style toilet, and may be a Japanese-style toilet, and when a Japanese-style toilet 41 is provided, the toilet seat device 42 is omitted.

[0027] Fig. 5 is a diagram showing an example of the controller 43. As shown in Fig. 5, the controller 43 has an operation unit 431 for performing operations such as setting the temperature of the toilet seat device 42 and setting the flush position. The controller 43 also has a display unit 432, a speaker 433, and a flush button 434. In addition, the controller 43 may be provided with other buttons (not shown) for inputting the usage status, such as an emergency button, a fire alarm button, and a no abnormality button. These buttons may be so-called software keys that are displayed on the display unit 432 and selected by a touch sensor or the operation unit 431. The controller 43 may be one form of an entry / exit sensor 51 that detects the entry / exit state of a user, and detects the state in which a person (user) has entered the toilet booth 14 in response to operation of the flush button 434 or a button for inputting the usage state.

[0028] The display unit 432 displays the set temperature of the toilet seat, the temperature of the hot water for washing, the washing position, and other information received from the management server 44.

[0029] Speaker 433 outputs sounds such as operation sounds when operating operation unit 431, sounds related to warnings described below, and sounds simulating the sound of flush water flowing to flush the toilet bowl.

[0030] Flush button 434 is an operation button that is operated by the user when flushing water is to be released into toilet bowl 41. When controller 43 detects that flush button 434 has been pressed, it opens a flush valve (not shown) of toilet bowl 41 to release flush water.

[0031] The alarm unit 45 outputs sound or light as an alarm based on an alarm notified from the management server 44. The alarm unit 45 is, for example, an upper portion of the left and right side walls 14L, 14R, and a display unit 451 that displays light or a message as an alarm and a speaker 452 that outputs sound are provided facing the outside of the toilet booth 14. That is, the alarm is notified not only to the user in the toilet booth, but also to the surroundings through the space between the upper portion of the side walls 14L, 14R and the ceiling 14C. Note that in the case of a configuration in which an alarm is output from the controller 43, the alarm unit 45 may be omitted.

[0032] The entrance / exit sensor 51 of this embodiment includes the above-mentioned open / close sensor 92, the controller 43, and the user sensor 111. The entrance / exit sensor 51 may also include a seating sensor of the toilet seat device 42 or a human presence sensor outside the toilet booth.

[0033] The electromagnetic wave detection unit 11 detects the state of electromagnetic waves for communication in the toilet booth 14. The electromagnetic wave detection unit 11 detects the state of electromagnetic waves for communication in the toilet booth 14. The electromagnetic wave detection unit 11 detects electromagnetic waves transmitted according to a protocol as electromagnetic waves for communication (hereinafter, also referred to as communication waves). The electromagnetic wave detection unit 11 may acquire frames (beacon frames, probe requests, probe responses, etc.) and packets (advertising packets, etc.) transmitted from the wireless LAN. The electromagnetic wave detection unit 11 may be an access point or a Bluetooth terminal. For example, the electromagnetic wave detection unit 11 transmits the source address of the detected electromagnetic wave and the intensity of the electromagnetic wave as the detection result to the management server 44. Note that the electromagnetic wave detection unit 11 may transmit the source addresses of the detected electromagnetic waves and the intensity of the electromagnetic wave as a list to the management server 44.

[0034] 6 is a diagram showing the configuration of a management server (secret photography detection device) 44. The management server 44 is a computer including a control unit 440, an auxiliary storage device 443, a communication IF (Interface) 444, and an input / output IF (Interface) 445, which are interconnected by a connection bus 446.

[0035] The auxiliary storage device 443 is a storage medium that stores programs executed by the control unit 440, data used in information processing, operation setting information, etc. The auxiliary storage device is, for example, a hard-disk drive (HDD), a solid-state drive (SSD), an erasable programmable ROM (EPROM), a flash memory, a USB memory, a memory card, etc.

[0036] The input / output IF 445 is an interface for inputting and outputting data between peripheral devices. The input / output IF 445 inputs and outputs data between devices such as a disk drive that reads data from a storage medium such as a CD or DVD, an operation unit, a display device, a microphone, a speaker, and a sensor. The operation unit is an input unit such as a mouse, keyboard, or touch panel that inputs information to the management server 44 by an operator's operation. The display device displays information such as the processing result. This is an output section that displays and outputs information to an operator.

[0037] The communication IF 444 is an interface (communication module) that communicates with other devices via a communication line (network), and is also called a CCU (Communication Control Unit). The management server 44 is connected to the alarm unit 45, controller 43, toilet seat device 42, user sensor 111, electromagnetic wave detection unit 11, etc. in the toilet facility 10 via the communication IF 444 and the network 5, and transmits and receives information between these devices.

[0038] The control unit 440 has a central processing unit (CPU) 441 and a main memory device 442, and executes processing as each functional unit such as the electromagnetic wave state acquisition unit 401, the transmission position identification unit 402, the entrance / exit detection unit 403, the voyeurism determination unit 404, and the output control unit 405 according to a computer program read out in an executable manner into the main memory device 442. The CPU 441 is also called an MPU (Micro Processor Unit), a microprocessor, or a processor. The CPU 441 is not limited to a single processor, and may have a multiprocessor configuration. Furthermore, a single CPU 441 connected by a single socket may have a multicore configuration. At least a part of the processing of each of the above units may be performed by a processor other than the CPU 441, for example, a dedicated processor such as a digital signal processor (DSP), a graphics processing unit (GPU), a numerical calculation processor, a vector processor, or an image processing processor. Furthermore, at least a part of the processing of each of the above functional units may be an integrated circuit (IC) or other digital circuit. Furthermore, at least a part of each of the above units may include an analog circuit. Integrated circuits are classified into LSI, Application Specific Integrated Circuit (ASIC), and programmable logic. The PLD includes, for example, a field-programmable gate array (FPGA). Each of the above functional units may be a combination of a processor and an integrated circuit. These combinations are called, for example, MCU (Micro Controller Unit), SoC (System-on-a-chip), system LSI, chipset, etc.

[0039] The electromagnetic wave state acquisition unit 401 acquires the state of electromagnetic waves for communication from an electromagnetic wave detection unit that detects the state of electromagnetic waves for communication in the target booth. The electromagnetic wave state acquisition unit 401 acquires the state of electromagnetic waves for communication from an electromagnetic wave detection unit that detects the state of electromagnetic waves for communication in the target booth. For example, the electromagnetic wave state acquisition unit 401 acquires a communication signal used for wireless communication such as Wi-Fi or Bluetooth (registered trademark) via a communication IF 444. A list may be obtained in which the source and radio wave intensity are associated with each signal.

[0040] The transmission position identifying unit 402 identifies the transmission position of the communication wave based on the position information (coordinates) of the electromagnetic wave detection units 11 arranged at different positions and the strength of the communication wave detected by each electromagnetic wave detection unit 11. The coordinates in the toilet facility 10 are determined in advance, and the coordinates (position information) of the positions where each electromagnetic wave detection unit 11 is arranged are stored in the auxiliary storage device 443. For example, the transmission position identifying unit 402 determines the distance between the electromagnetic wave detection unit 11 that detected the communication wave and the transmission position based on the strength of the communication wave, and determines the position information (coordinates) of the transmission position like distance triangulation based on this distance and the position information (coordinates) of each electromagnetic wave detection unit 11. The position information is not limited to the coordinates, and may be information indicating whether or not the location is inside a toilet booth. In this case, when the strength of the communication waves from a specific device (transmission source) detected by an electromagnetic wave detection unit 11 arranged in a certain toilet booth is stronger than the strength of the electromagnetic waves from the same device detected by another electromagnetic wave detection unit 11, the transmission position identification unit 402 determines that the transmission position of the transmission source is inside the toilet booth. On the other hand, when the strength of the communication waves from a specific transmission source detected by the electromagnetic wave detection unit 11 is weaker than the strength of the communication waves from the same device detected by another electromagnetic wave detection unit 11, the transmission position identification unit 402 determines that the transmission position of the transmission source is not inside the toilet booth (outside the toilet booth). In other words, the transmission position identification unit 402 identifies which toilet booth the transmission position of the communication waves from the specific transmission source is inside.

[0041] The entry / exit detection unit 403 detects the entry / exit of a user in the toilet booth 14 based on the detection result by the entry / exit sensor 51 .

[0042] The voyeurism determination unit 404 compares the state of communication waves detected by the electromagnetic wave detection unit 11 with a reference state, which is the state of communication waves when there is no voyeurism camera, and determines that there is a possibility of voyeurism if the number of communication waves detected in the detection state is greater than the reference state. For example, the voyeurism determination unit 404 acquires the state of communication waves in a state in which an administrator has confirmed in advance that no voyeurism cameras are installed, and sets the state as the reference state. For example, the voyeurism determination unit 404 may acquire the source address of the communication waves from the acquired communication waves, and record a list of source addresses performing wireless communication in the auxiliary storage device 443 as the reference state. Note that the reference state is not limited to a list of source addresses, and may be, for example, a list of SSIDs extracted from a Wi-Fi beacon frame or the like, or a list of Bluetooth addresses. The information may be information indicating the sender, such as a UUID extracted from the vertising packet or a list of the sender device names.

[0043] The voyeurism determination unit 404 may compare the reference state with the detection state after the user leaves, and may determine that there is a possibility of voyeurism when the number of communication waves in the detection state is greater than the reference state. The voyeurism determination unit 404 may also determine that there is a possibility of voyeurism when the number of communication waves in the detection state is greater than the reference state for a predetermined time or more (hereinafter, this time is also referred to as the duration). In this case, the predetermined time is set to a time longer than the general use time of a toilet, for example, 10 minutes or more, 20 minutes or more, or 30 minutes or more. This predetermined time may be set based on the average or standard deviation of the use time of the toilet booth 14, such as being shorter in a station or the like and longer in a multi-tenant building. For example, the voyeurism determination unit 404 may detect the use time of each toilet booth 14 based on the detection result of the entry / exit detection unit 12, calculate the standard deviation, and set the predetermined time to +2σ, +3σ, or +5σ.

[0044] Furthermore, the voyeurism determination unit 404 may determine that there is a possibility of voyeurism when the transmission position of the transmission source identified by the transmission position identification unit 402 is inside a toilet booth and the communication waves transmitted from the transmission source are increased in the detection state compared to the reference state. In this case, since electromagnetic waves may be output from a smartphone or wearable device carried by a normal user, the voyeurism determination unit 404 may perform the determination after the user leaves the room, and may determine that there is a possibility of voyeurism when the communication waves having the toilet booth as a transmission position are increased compared to the reference state even after the user leaves the room.

[0045] When it is determined that there is a possibility of voyeurism, the output control unit 405 outputs an alarm to the alarm unit 45, the manager terminal 3, and the controller 43. When it is determined that there is a possibility of voyeurism, the output control unit 405 may also transmit a control signal to the lock 91 to control it to be locked.

[0046] <Method of detecting voyeurism> 7 is a diagram showing a process flow of a secret photography detection method executed in accordance with a secret photography detection program by a control unit of the management server 44. The control unit 440 of the management server 44 periodically starts the process of FIG.

[0047] In step S10, the control unit 440 acquires the detection state of communication waves (for example, a list of transmission sources) from the electromagnetic wave detection unit 11 that detects the state of electromagnetic waves for communication in each toilet booth 14.

[0048] In step S20, the control unit 440 identifies the transmission position of the communication wave based on the position information of the electromagnetic wave detection unit 11 and the intensity of the communication wave detected by each electromagnetic wave detection unit 11. Note that step S20 is not an essential step, and may be omitted when the transmission position is not used to determine whether or not voyeurism has occurred.

[0049] In step S30, the control unit 440 determines the detection state of the electromagnetic waves acquired in step S10 as The detection state acquired in step S10 is compared with a reference state, which is a state of electromagnetic waves without a hidden camera, and the source of the communication wave that has increased compared to the reference state is identified. Note that the control unit 440 may be configured to determine whether or not the communication wave has increased from the reference state only for the communication wave whose transmission position has been determined to be inside the toilet booth in step S20.

[0050] In step S40, control unit 440 checks the entry / exit state of each toilet booth 14. For example, control unit 440 checks for each toilet booth 14 whether the user has left the booth, i.e., whether lock 91 is unlocked, door 9 is open, or whether no user is detected in toilet booth 14, or any combination of these states.

[0051] In step S50, the control unit 440 determines that there is a possibility of voyeurism when the communication waves having the transmission position inside the toilet booth 14 determined in step S40 as a state from which the user has left the room are communication waves that have increased compared to the reference state. Here, the control unit 440 may determine that there is a possibility of voyeurism when the state in which the communication waves are increased compared to the reference state continues for a predetermined time or more. In other words, the control unit 440 may not determine that there is a possibility of voyeurism when the state in which the communication waves are increased compared to the reference state continues for less than a predetermined time. Note that in this embodiment, it is determined whether or not the communication waves have increased compared to the reference state in the toilet booth 14 from which the user has left the room, but this is not limiting, and step S40 may be omitted when it is determined whether or not the communication waves detected by all the electromagnetic wave detection units 11 have increased compared to the reference state.

[0052] In step S60, when it is determined in step S50 that there is a possibility of voyeurism, control unit 440 outputs an alarm to alarm unit 45 and controller 43 in toilet booth 14 where it is determined that there is a possibility of voyeurism. Control unit 440 also transmits and outputs information indicating toilet booth 14 where it is determined that there is a possibility of voyeurism, such as an ID or serial number that can uniquely identify toilet booth 14, location information, etc., to manager terminal 3. Furthermore, when it is determined that there is a possibility of voyeurism, output control unit 405 may transmit (output) a control signal to lock 91 to control it to be locked.

[0053] As described above, the management server (voyeurism detection device) 44 of this embodiment determines that there is a possibility of voyeurism and outputs an alarm when the communication waves in the toilet booth 14 increase above the reference state. This allows the management server 44 of this embodiment to determine the presence or absence of voyeurism without relying on image processing, and can detect even small voyeur cameras or cameras hidden in waste bins, etc., and can accurately detect the possibility of voyeurism.

[0054] <others> The present invention is not limited to the above-mentioned illustrated examples, and various modifications can be made without departing from the scope of the present invention. In addition, the elements of the above-mentioned embodiments may be combined without departing from the scope of the present invention. For example, in the above-mentioned embodiment, a toilet booth is used as the target booth to determine the possibility of voyeurism, but the present invention is not limited to this, and the target booth may be a shower room, a bathroom, a bedroom, or a private room in an internet cafe or a capsule hotel. [Explanation of symbols]

[0055] 1: Toilet facilities 3: Administrator terminal 4: Entrance / Exit 5: Network 9: Door 10: Toilet facilities 11: Electromagnetic wave detection unit 12: Entry / exit detection unit 14: Toilet booth 14B: Back wall 14C:Ceiling 14F: Floor 14L: Left side wall 14R: Right side wall 41: Toilet 42: Toilet seat device 43: Controller 44: Management server 45:Alarm section 51: Sensor 91: Lock 92: Open / close sensor 100:Peeping Detection System 111: User sensor 401: Electromagnetic wave state acquisition unit 402: Transmission position identification unit 403: Entry / exit detection unit 404: Voyeurism Judgment Department 405: Output control unit 421: Seat sensor 431:Operation unit 432: Display section 433: Speaker 434: Cleaning button 440: Control unit 441:CPU 442: Main memory 443:Auxiliary storage device 446: Connection bus 451: Display section 452: Speaker 444: Communication IF 445: Input / Output IF

Claims

1. an electromagnetic wave state acquiring unit that acquires a state of the electromagnetic wave for communication from an electromagnetic wave detecting unit that detects a state of the electromagnetic wave for communication in the target booth; a voyeurism determination unit that compares the detection state of the electromagnetic waves by the electromagnetic wave detection unit with a reference state, which is a state of electromagnetic waves in the absence of a voyeurism camera, and determines that there is a possibility of voyeurism when the detection state shows an increase in electromagnetic waves for communication compared to the reference state; an output control unit that outputs an alarm when it is determined that there is a possibility of the voyeurism; A voyeurism detection device comprising:

2. an entry / exit detection unit for detecting entry / exit of a user in the target booth; The voyeurism detection device according to claim 1 , wherein the voyeurism determination unit determines that there is a possibility of voyeurism when the number of electromagnetic waves for communication in the detection state is greater than that in the reference state after the user leaves.

3. 3. The voyeurism detection device according to claim 1, wherein the voyeurism determination unit determines that there is a possibility of voyeurism when a state in which the number of electromagnetic waves for communication in the detection state is greater than that in the reference state continues for a predetermined period of time or longer.

4. a plurality of the electromagnetic wave detection units are provided, the plurality of electromagnetic wave detection units being arranged to detect the electromagnetic waves at different positions from one another; 3. The voyeurism detection device according to claim 1, further comprising a transmission position identification unit that identifies a transmission position of the electromagnetic wave based on position information of the plurality of electromagnetic wave detection units and the intensity of the electromagnetic wave detected by each electromagnetic wave detection unit.

5. The voyeurism detection device according to claim 4 , wherein the voyeurism determination unit determines that there is a possibility of voyeurism when the electromagnetic waves having the target booth as the transmission position are increased in the detection state compared to the reference state.

6. acquiring a state of electromagnetic waves for communication from an electromagnetic wave detection unit that detects a state of electromagnetic waves for communication in a target booth; comparing a detection state of the electromagnetic waves by the electromagnetic wave detection unit with a reference state, which is a state of electromagnetic waves in the absence of a voyeur camera, and determining that there is a possibility of voyeurism when the detection state shows an increase in electromagnetic waves for communication compared to the reference state; outputting an alarm when it is determined that there is a possibility of the voyeurism; The control unit executes the above-mentioned voyeurism detection method.

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