JP2007058411A - Security system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automatically detect a suspicious person or a suspicious item concealed in a specified space such as each toilet booth in a public toilet, and to allow a proper evacuation action for persons in the vicinity thereof. <P>SOLUTION: An area 143B near a side wall 128 in the toilet booth 110 is sensed using a radio Doppler sensor or the like, the presence of the suspicious person is determined when a person is detected over a prescribed time or more in the area 143B, and a notification is issued to the persons in a next toilet booth and the persons in a toilet room outside the toilet booth 110. The presence of the suspicious person is determined when a person is detected over a relatively long time in a front area or a rear area of a Japanese toilet bowl 220. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a security system that automatically detects, for example, a suspicious person, an abnormal person, or a suspicious object in a toilet and outputs information useful for crime prevention or rescue.

  Regarding toilet security, for example, the inventions disclosed in Patent Documents 1 to 3 are known.

  According to Patent Document 1, a radio wave is transmitted into a house, a reflected wave is received from the house, and an operation state of a person in the house is grasped by a Doppler signal between the two, and is grasped according to the operation state. If it is judged that there is no evidence of movement for a long time despite the presence of people, it is a security company to control the equipment in the house, especially in spaces such as hallways and toilets. An in-house device control device for notifying to is disclosed.

  In Patent Document 2, the presence or absence of use of the toilet is detected by using a human body sensor, a door opening / closing sensor, etc., and if the usage time is too long, it is considered that some abnormality has occurred to the user. An output abnormality monitoring system is disclosed.

  The toilet booth system disclosed in Patent Document 3 detects a human body in a toilet booth equipped with an automatic door, and when a human body is detected, an automatic door opening / closing operation from the inside of the booth is performed from that outside the booth. When priority is given, or when the human body is detected for a certain amount of time, it is notified outside the booth or the automatic door is forcibly unlocked.

  In addition, there is an invention disclosed in Patent Document 4 as a means for ensuring user safety from a hidden camera or a hidden microphone. The hidden camera detection device disclosed in Patent Document 4 is carried by a user and emits spot light or directional radio waves to the surroundings to detect a hidden camera or an object similar thereto.

JP 2001-238272 A JP 2001-307247 A JP 2002-188204 A JP 2002-156464 A

  The conventional techniques described in Patent Documents 1 to 3 described above are useful for the purpose of notifying a person when a person falls down or cannot move in a bathroom or bathroom, and rescues the person. Moreover, what was described in patent document 4 is effective when a hidden camera etc. are arrange | positioned in the range which can be seen from a user.

  However, especially in women's public toilets, for example, there are more serious problems than those mentioned above, such as a person with a criminal purpose lurking in the booth next to the booth where the user himself / herself is located. There is a hidden camera in the booth, and it is a danger of a suspicious person or suspicious object lurking in a place that is not directly accessible to the user, such as looking into the booth. Needless to say, it is very meaningful to help users to detect these risks in advance and take appropriate avoidance actions.

  However, according to the above-described prior art, it is very difficult to automatically detect a suspicious person lurking in the booth. Because suspicious people move differently from people who are unable to move due to physical anomalies, simply detecting the absence of human movement in the booth as in the prior art, distinguishes suspicious people from normal people. Because it is difficult to do. Especially in the case of women's toilet booths, the behavior of changing stockings and changing clothes is often performed, so if you do not judge the movement of people in the booth after taking this fact into consideration, suspicious people and ordinary users Cannot be distinguished. Furthermore, when there are a plurality of people in one toilet booth, there is a very high possibility that a criminal act is being carried out, but this state cannot be detected by the above-described conventional technology.

  Furthermore, the above-described prior art does not provide an effective report for making the user take an opportunity to avoid the above-described danger avoidance behavior.

  Accordingly, an object of the present invention is to automatically detect a danger such as a suspicious person or a suspicious object hidden in a toilet booth in a toilet facility.

  Another object is to assist the user in taking an avoidance action from the danger when a hidden danger is detected.

  According to the first aspect of the present invention, a security system for detecting an abnormal object in a toilet booth equipped with a Japanese-style toilet is a sensor means for detecting a person or an object in one or more partial areas in the toilet booth. And a determination unit that receives a sensor signal from the sensor unit and determines whether there is an abnormality target in the toilet booth. The determination means determines that there is an abnormality target when the sensor means detects a person or an object in the first partial area in the vicinity of the partition wall from the adjacent toilet booth for a predetermined time or more.

  According to this security system, if a person stays in the area near the partition wall from the next toilet booth in the toilet booth for a specified time or more, it is determined that an abnormal object (for example, a suspicious person or a suspicious object) has been detected. Since the normal toilet user does not stay in the vicinity of the partition wall for a long time, the detection accuracy of the abnormality target is improved.

  In this security system, the determination unit may determine that there is an abnormality target not only when the following conditions are satisfied, but also when the following conditions are satisfied. That is, for example, when a person or an object is detected in a region in front of the Japanese-style toilet for a predetermined time or more, it may be determined that there is an abnormality target. Alternatively, for example, even when a person or an object is detected for a predetermined time or more in the area behind the Japanese-style toilet, it may be determined that there is an abnormality target. Or, for example, or if, for example, a person or an object that has not moved more than a predetermined level for a predetermined time or more is detected in a toilet and its vicinity, or an area near a handrail, it is determined that there is an abnormality target. You may do it. Or, for example, if a person or an object is detected in a low height range near the floor in the toilet booth, but no person or an object is detected in a higher height range, it is determined that there is an abnormality target. May be. Alternatively, for example, when a person or an object is detected substantially simultaneously in a plurality of different partial areas in the toilet booth, it may be determined that there is an abnormality target.

  Thus, the detection accuracy is further improved by using the detection results in the different partial regions.

  In a preferred embodiment, the sensor means also monitors whether a person has entered the entire area of the toilet booth, and after detecting that a person has entered the entire area of the toilet booth, the various partial areas described above are used. A person or an object is detected in the case of, and the presence or absence of an abnormality target is determined based on the result.

  By scanning the inside of the toilet booth using the scanning object sensor, it is also possible to detect the entire area in the toilet booth and all the various partial areas. That is, the specific space is divided into a plurality of sections, and the plurality of sections are scanned while sensing one section at a time by the scan type object sensor. The detection results in all the sections obtained by scanning all the sections correspond to the detection results in the entire area, and the detection results in each section correspond to the detection results in the partial area corresponding to each section. .

  The following configuration can be adopted as the configuration of the scan type object sensor. That is, a microstrip antenna electrode array composed of a plurality of feeding elements and a plurality of parasitic elements is disposed on the substrate. Radio waves for forming a scan-type narrow sensing region are transmitted from the microstrip antenna electrode array. A switch for selectively grounding each parasitic element in the microstrip antenna electrode array is provided. By operating the switch, it is possible to change the selection of the parasitic element to be grounded. The toilet booth can be scanned.

  By using a scan-type object sensor with such a structure, high-speed scanning is possible, and substantially simultaneous detection in a plurality of different partial areas, tracking of movement of a person in a toilet booth, Human detection and the like are facilitated, and as a result, the accuracy of detecting an abnormal object is further improved.

  If an abnormal subject is detected at a certain toilet booth, notify the people in the toilet booth next to the toilet booth or outside the toilet booth and let them take timely action to avoid danger. I can help.

  According to another aspect of the present invention, a method for detecting an abnormal object in a toilet booth equipped with a Japanese style toilet includes detecting a person or an object in one or more partial areas in the toilet booth, Receiving a detection result in the area, and determining whether or not there is an abnormality target in the toilet booth. In the determination step, a person or a person or more in a first partial area in the vicinity of the partition wall from the adjacent toilet booth When an object is detected, it is determined that there is an abnormality target.

  According to the present invention, an abnormal object such as a suspicious person or a suspicious object hidden in a toilet booth can be automatically detected in a toilet facility.

  In the present invention, when the detection result is reported to a person in the toilet booth adjacent to the toilet booth in which the suspicious person or the suspicious object is detected or in the toilet room in the vicinity thereof, the person takes timely risk avoidance behavior. Can help take.

  Hereinafter, an embodiment of the present invention applied to a public toilet facility will be described with reference to the drawings.

  FIG. 1 is a plan view showing an example of a public toilet facility to which a security system according to an embodiment of the present invention is applied.

  As shown in FIG. 1, the public toilet facility 100 is divided into, for example, a female section 102, a male section 104, and a wheelchair section 106. Each of the women's and men's sections 102 and 104 comprises a toilet room 108, and a plurality of toilet booths 110 are provided therein. The wheelchair section 106 is also composed of one toilet room 108, in which there is one toilet booth 110. Here, the “toilet room” refers to an open toilet space that can be used by multiple people at the same time, and the “toilet booth” is a closed door that is surrounded by a locked door and a wall and used only by one person at a time. A private toilet space. Further, a public space 112 other than the toilet booth 110 in the toilet room 108 is referred to as a “toilet public space” in this specification.

  FIG. 2 shows an overall configuration of a security system according to an embodiment of the present invention applied to the public toilet facility 100 described above.

  As shown in FIG. 2, the security system according to the embodiment of the present invention includes a plurality of object sensors 114 installed in a plurality of toilet booths 110 in a public toilet facility 100, respectively. One or more object sensors 114 are installed in each toilet booth 110, and each object sensor 114 outputs a signal corresponding to the presence or absence, movement and / or position of a person or an object in each toilet booth 110. The output signal is input to the control device 116. The control device 116 may be disposed at an appropriate place inside or outside the public toilet facility 100, or may be distributed among a plurality of object sensors 114. A plurality of notification devices 118 are connected to the control device 116, and these notification devices 118 are included in the plurality of toilet booths 110, in the toilet public space 111 of the three toilet rooms 108, and / or in the public toilet facility 100. It is provided at each peripheral location.

  The control device 116 determines the presence / absence of a suspicious person and / or suspicious object in each toilet booth 110 based on output signals from one or more object sensors 114 installed in each toilet booth 110. Then, control device 116 drives one or more of a plurality of notification devices 118 based on the determination result.

  Here, the “suspicious person” that is one of the detection targets is an abnormal action in the toilet booth 110 that is different from the normal use of the toilet booth 110 (for example, toilet or change of clothes), typically Refers to actions that may cause harm to others, such as peeping, ambushing, foreign object installation, and simultaneous use by multiple people, and when the body boots down or cannot move due to physical abnormalities It also includes acts or conditions that could harm the person himself. The “suspicious object” is a foreign object that is different from the original equipment of the toilet booth 108, typically, for example, a hidden camera, a hidden microphone, or a dangerous object, which may cause danger or trouble to others. An object with a point. These “suspicious person” and “suspicious object” are collectively referred to as “abnormal object” in this specification.

  The security system according to this embodiment employs a novel detection technique for detecting an abnormality target in each toilet booth 110 with higher accuracy. Further, in this security system, the presence of an abnormal object is determined by people who may be harmed by the abnormal object (for example, a person in the toilet booth 110 next to the toilet booth 110 where the abnormal object exists, a toilet pub space. 111), people in the vicinity of the public toilet facility 100, etc.) are quickly notified to prevent damage before they occur.

  Details of the security system according to this embodiment will be described below. First, a detection technique for detecting an abnormal object with higher accuracy will be described.

  FIG. 3 is a perspective view showing a structural example of one toilet booth 110.

  As shown in FIG. 3, the toilet booth 110 has a ceiling 120 and a floor 122. The toilet booth 110 is surrounded by four walls, that is, a front wall 124, a back wall 126, and left and right side walls 128. On the front wall 124, a door 130 with a lock for entering and exiting the toilet booth 110 is provided. Each of the left and right side walls 128 serves as a partition wall from an adjacent toilet booth (not shown in FIG. 3). A Western-style toilet bowl 132 is installed in the vicinity of the back wall 126 in the toilet booth 110, and the toilet bowl 132 faces forward (in the direction toward the front wall 124). A toilet seat device 134 having a human body washing function is mounted on the toilet bowl 132, and a remote controller 136 for the toilet seat device 134 is fixed on one side wall 128. Further, a storage shelf 138 is provided on the upper portion of the back wall 126. It should be noted that the structure of the toilet booth 110 shown in FIG. 3 is merely an example, and a structure different from this may be used as a matter of course. However, for the convenience of explanation, the toilet shown in FIG. Based on the structural example of the booth 110, a configuration for accurately detecting an abnormality target in the toilet booth 110 will be described.

  One object sensor 114 is installed in a substantially central portion of the ceiling 120 of the toilet booth 110, and a sensing area of the object sensor 114 is set in the toilet booth 110. The object sensor 114 transmits a radio wave such as a microwave to the sensing area and receives a reflected radio wave from the sensing area, and particularly detects a Doppler signal between the transmitted wave and the received wave. Since the Doppler sensor having the above has the advantage of being able to detect the movement of a person or an object, it is preferably used. Of course, other types of sensors, for example, a radio wave sensor other than a Doppler sensor that detects a time difference between a transmitted wave and a received wave and an intensity of the received wave, or an infrared sensor that transmits and receives infrared rays instead of radio waves (active) An infrared sensor) or a pyrothermal sensor (passive infrared sensor) that receives infrared rays emitted exclusively from a human body or an object may be used as the object sensor 114. Or, it is installed on the floor, etc., to detect whether a person or object is placed on it, or to detect whether a person or object crosses the light beam through a light beam at a certain position. An optical sensor or the like may also be used as the object sensor 114. Thus, although there are various variations in the structure of the object sensor 114, only the camera is not employed. Thus, even if the inside of the toilet booth 110 is monitored using the object sensor 114 other than the camera, there is no possibility that the privacy of a good user of the toilet booth 110 is infringed.

  In the following description, for convenience of explanation, a radio wave sensor having both a function of detecting the intensity of a received wave and a function of detecting a Doppler signal is used as the object sensor 114.

  The object sensor 114 has at least two types of sensing areas. The first type of sensing area is an area that extends over substantially the entire space in the toilet booth 110, and is hereinafter referred to as a “wide sensing area”. The second type of sensing area is an area limited to a specific narrow space in the toilet booth 110, and is hereinafter referred to as a “narrow sensing area”. The narrow sensing region is unnatural, in particular, that the presence of a person or object in it itself, or the presence of a person or object in it for a long time without much movement (i.e. its Such a person or object corresponds to a space area in the toilet booth 110 that can be determined to be an abnormal subject rather than being a normal toilet user who changes toilets and clothes, Specific examples will be described later. Only one narrow sensing region may be provided, but preferably a plurality of different narrow sensing regions may be provided. In the case where the object sensor 114 is a non-contact sensor using radio waves, infrared rays, light, or the like, it is desirable that the object sensor 114 has directivity that can control the sensing area as described above. The object sensor 114 or the control device 116 is further equipped with a function of forming different sensing areas as described above by using time division, frequency division, space division, or a scanning method as described later. . The use of the wide sensing area and the narrow sensing area in this way is one factor that improves the detection accuracy of the abnormal object in the toilet booth 110.

  For the purpose of properly using a plurality of sensing areas as described above, the number of object sensors 114 is not necessarily one, and a plurality of object sensors 114 having different sensing areas may be provided. Moreover, the installation location of each object sensor 114 does not necessarily need to be the ceiling 120, and may be installed at other locations of the toilet booth 11. For example, as illustrated by a dotted line in FIG. 3, even if a pressure sensor as the object sensor 114 is installed in a specific area of the floor 122 (particularly, an area corresponding to the above-described second type sensing area). Good. Alternatively, a radio wave sensor, an ultrasonic sensor, a pyrothermal sensor, or the like as the object sensor 114 may be provided on the front or side of the toilet 132, the main body of the toilet seat device 114, the remote controller 136 of the toilet seat device 114, or the storage shelf 138. An active infrared sensor or the like may be installed. In any case, it is desirable that the object sensor 114 is hidden and installed so as not to be seen by people using the public toilet facility 100.

  By the way, when a device having a remote controller 136 such as the toilet seat device 114 is used as an arrangement location of the object sensor 114, the remote controller 136 is configured to be communicable with the object sensor 114, and the remote controller 136 is It can also be configured to function as a signal repeater between the object sensor 114 and the control device 116, the control device 116 itself, or the notification device 118.

  Also, as shown in FIG. 3, one notification device 118 is installed on one side wall 128 in the toilet booth 110. The main use of the notification device 118 in the toilet booth 110 is that when an abnormal object is detected in another toilet booth other than the toilet booth 110 (particularly, the adjacent toilet booth), this is described. 110 to inform the user in 110. Further, another notification device 118 is installed on the outer surface of the front wall 124 of the toilet booth 110. The main use of the notification device 118 outside the toilet booth 110 is that when an abnormal object is detected in the toilet booth 110, the fact is notified to people outside the toilet booth 110 (especially the toilet public space 112). It is to inform. As each notification device 118, various output devices such as an LED lamp, a liquid crystal display panel, or an audio output device can be used. Regarding the installation location and function of the notification device 118, various variations other than the above-described examples can be adopted, and specific examples thereof will be described later.

  4A and 4B are a plan view and a side view of the toilet booth 110 showing an example of a wide sensing area that the object sensor 114 has in the toilet booth 110. FIG.

  As shown in FIG. 4A and FIG. 4B, the wide sensing area 140 extends from the object sensor 114 installed at a substantially central portion of the ceiling 120 downwardly into the toilet booth 110 with a wide angle. In the height range (for example, a range of about 1 m or less) that is a ridge present at the height, almost the entire planar area of the toilet booth 110 is covered. Therefore, if a person or an object enters the toilet booth 110, the person or object almost always gets caught in some part of the wide sensing area 140. Therefore, the presence of the person or object is almost detected by the object sensor 114. It can always be detected. The detection capability of the wide sensing area 140 is not affected by the route entering the toilet booth 110. That is, even if it does not necessarily enter from the front door of the toilet booth 110, even if it crosses the side wall from the adjacent booth and enters the toilet booth 110, or if there is a window in the toilet booth 110, the window is opened. Even if the toilet booth 110 is entered, the person or object entering the toilet booth 110 is almost certainly detected by the wide sensing area 140. As will be described later, from this point of view, the detection signal in the wide sensing region 140 is processed by the control device 116.

  5A and 5B are a plan view and a side view of the toilet booth 110 showing an example of a narrow sensing region that the object sensor 114 has in the toilet booth 110. FIG.

  As shown in FIGS. 5A and 5B, the narrow sensing area 142A extends obliquely downward from the object sensor 114 on the ceiling 120 toward the front wall 124 with the door, and has a certain height on the front wall 124. It covers a wide area and is far away from the toilet 132. That is, if a person stands near the front wall 124 or crouches, the person is almost certainly caught by the narrow sensing area 142A, but for the sake of convenience. The narrow sensing region 142A is set so that a person sitting on the toilet 132 does not catch the narrow sensing region 142A. In the following description, a sensing region for sensing a region near the front wall 124 like the narrow sensing region 142A is referred to as an “A-type narrow sensing region”. In the case of normal toilet use such as stool or change of clothes, the user rarely stays in the A-type narrow sensing region 142A for a long time. As will be described later, from this point of view, the detection signal in the A-type narrow sensing region 142A is processed by the control device 116.

  FIGS. 6A and 6B are a plan view and a front view of the toilet booth 110 showing another example of a narrow sensing area that the object sensor 114 has in the toilet booth 110. FIG.

  The narrow sensing region 142B shown in FIGS. 6A and 6B extends obliquely downward from the object sensor 114 of the ceiling 120 toward the left and right side walls (partition wall with the adjacent toilet booth) 128 at a narrow angle. It covers an area of a certain height range of 128 and is far away from the toilet 132. That is, if a person stands near or crouches on one of the side walls 128, the person is almost certainly caught by this narrow sensing region 142B, but The narrow sensing region 142B is set so that a person sitting on the toilet bowl 132 for the stool does not get caught in the narrow sensing region 142B. Hereinafter, a narrow sensing region for sensing a region in the vicinity of the side wall (partition wall with the adjacent toilet booth) 128 of the toilet booth 110 as in the narrow sensing region 142B is referred to as a “B-type narrow sensing region”. . In the case of normal toilet use such as stool or change of clothes, the user rarely stays in the B-type narrow sensing region 142B for a long time. As will be described later, from this point of view, the detection signal in the B-type narrow sensing region 142B is processed by the control device 116.

  7A and 7B are a plan view and a side view of the toilet booth 110 showing still another example of a narrow sensing area that the object sensor 114 has in the toilet booth 110. FIG.

  The narrow sensing region 142C shown in FIGS. 7A and 7B extends obliquely downward and rearward from the object sensor 114 of the ceiling 120 at a narrow angle, and is behind the toilet seat of the toilet 132 (ie, viewed from the user sitting on the toilet seat). It covers the space area in the vicinity of the rear wall 126 on the rear side (in the example shown, two space areas on the left and right sides of the toilet 132 in the back). That is, if a person stands behind or is crouching behind the toilet seat of the toilet 132, the person is almost certainly caught by the narrow sensing area 142C, but for the purpose of stool. The narrow sensing region 142C is set so that a person sitting in the toilet bowl 132 does not get caught in the narrow sensing region 142C. Hereinafter, a narrow sensing region for sensing a region behind the toilet seat of the toilet 132 of the toilet booth 110 like the narrow sensing region 142C is referred to as a “C-type narrow sensing region”. In the case of normal toilet use such as toilets and changing clothes, the user rarely enters the C-type narrow sensing region 142C. As will be described later, from this point of view, a detection signal in the C-type narrow sensing region 142C is processed by the control device 116.

  FIGS. 8A and 8B are a plan view and a side view of the toilet booth 110 showing still another example of the narrow sensing area that the object sensor 114 has in the toilet booth 110. FIG.

  A narrow sensing area 142D shown in FIGS. 8A and 8B extends downward from the object sensor 114 of the ceiling 120 at a narrow angle, and covers the front area of the toilet 132 and the space area near the front. In other words, when using a normal toilet such as a toilet or changing clothes, the user is almost certainly caught by the narrow sensing region 142D, and if the user falls or moves due to a physical abnormality or the like. The narrow sensing region 142D is set so that the user can be caught by the narrow sensing region 142D almost certainly even when it disappears. Hereinafter, like this narrow sensing area 142D, a narrow area for sensing a space area where a user who normally uses the toilet booth 110 most frequently exists, such as a space area near the front portion and the front of the toilet 132. The sensing area is referred to as “D-type narrow sensing area”. The D-type narrow sensing area 142D is an area where the person enters the most frequently, but if the person stays there for a long time without moving, the D-type narrow sensing area 142D is unable to move due to a physical abnormality. Or a person with a criminal purpose. As will be described later, from this point of view, a detection signal in the D-type narrow sensing region 142D is processed by the control device 116.

  FIG. 9A and FIG. 9B are a plan view and a front view of the toilet booth 110 showing still another example of a narrow sensing region that the object sensor 114 has in the toilet booth 110. FIG.

  A narrow sensing area 142E shown in FIGS. 9A and 9B extends obliquely downward at a narrow angle from the object sensor 114 on the ceiling 120 and covers a spatial area in the vicinity of the handrail 144 installed in the toilet booth 110. . A narrow sensing region for sensing a spatial region in the vicinity of the handrail 144 in the toilet booth 110 like the narrow sensing region 142E is referred to as an “E-type narrow sensing region”. According to the inventors' investigation, a user who is particularly changing clothes in the toilet booth 110 often supports his / her body with the handrail 128, and thus may be caught by the E-type narrow sensing region 142E. high. However, it is considered that not only a normal user but also a suspicious person is likely to use the handrail 128 for supporting the body or for other purposes and may be detected by being caught in the E-type narrow sensing region 142E. high. However, suspicious individuals should not be as prominent as those who change their clothes. From this point of view, a detection signal in the E-type narrow sensing region 142E is processed by the control device 116.

  FIGS. 10A and 10B are a plan view and a side view of the toilet booth 110 showing still two other examples of the narrow sensing area that the object sensor 114 has in the toilet booth 110. FIG.

  10A and 10B show two narrow sensing regions 142F and 142G that are different in height range. One narrow sensing region 142F reaches the floor 122 of the toilet booth 110, and covers almost the entire planar region of the toilet booth 110 mainly in a low height range close to the floor 122. The narrow sensing region for sensing the space region in the low height range close to the floor 122 is hereinafter referred to as “F-type narrow sensing region”. The other narrow sensing region 142G enters a certain height range (for example, when a person is standing or sitting on the toilet seat 132, but does not enter when the person is lying on the floor or lying down). The height range is set to cover the entire plane area of the toilet booth 110 in the height range. Such a narrow sensing region for sensing a spatial region having a certain height range is hereinafter referred to as a “G-type narrow sensing region”. A normal user will be detected in both the F-type and G-type sensing regions 142F, 142G, but will be present in one or both of the F-type and G-type sensing regions 142F, 142G for too long. If it is detected, there is a high possibility of an abnormal target. A person who has fallen on the floor 122 due to a physical abnormality, or is lying down on the floor 122 due to camera installation or peeping, is not detected in the F-type narrow sensing region 142F. It will be detected in the mold narrow sensing region 142G. When a suspicious object is installed on or near the floor 122, the received signal intensity in the F-type narrow sensing region 142F will change between before and after installation on the time axis. From this point of view, detection signals in the F-type and G-type narrow sensing regions 142F and 142G are processed by the control device 116.

  The example of the wide sensing region 140 and several narrow sensing regions 142A to 142G has been described above. Preferably, the wide sensing region 140 and all of the narrow sensing regions 142A to 142G from A type to G type are used in combination, but only the wide sensing region 140 and some types of narrow sensing regions are used. May be used in combination. In the above-described example, in order to be able to form different sensing areas with one object sensor 114, the object sensor 114 has a capability of changing the directivity range of radio wave transmission / reception so that each sensing area is formed in order. Alternatively, a set of a plurality of radio wave transmission antennas and reception antennas each having a different radio wave transmission / reception directivity range corresponding to each sensing area is provided.

  Different sensing areas may be formed by different object sensors. In addition, each object sensor may be installed in a place other than the ceiling. Some of such variations are shown below.

  11A and 11B are a plan view and a side view of the toilet booth 110 showing a modification for forming the A-type narrow sensing region 142A.

  11A and 11B, in addition to the object sensor 114 that forms the wide sensing area 140, the object sensor 114A is installed at a position near the front wall 124 in the ceiling 120, and the object sensor 114A is An A-type narrow sensing region 142 </ b> A that extends downward along the front wall 124 and is limited to the vicinity of the front wall 124 is formed. The A-type narrow sensing region 142A illustrated in FIG. 11A and FIG. 11B and the A-type narrow sensing region 142A illustrated in FIG. 5A and FIG. 5B described above are slightly different in specific shapes. The role of selectively sensing only the space near the front wall 124 is the same.

  12A and 12B are a plan view and a front view of the toilet booth 110 showing a modification for forming the B-type narrow sensing region 142B. FIG. 12C is a plan view of a toilet booth 110 showing another modification.

  12A and 12B, in addition to the object sensor 114 that forms the wide sensing region 140, two object sensors 114B are installed at positions near the left and right side walls 128 on the ceiling 120, respectively. The object sensor 114 </ b> B forms a B-type narrow sensing region 142 </ b> B that extends downward along each side wall 128 and is limited to the vicinity of each side wall 128. Alternatively, as shown in FIG. 12C, a B-type narrow sensing region 142B is provided on the upper side of each side wall 128 serving as a partition wall between toilet booths 110 that are continuously installed, and on both sides of each side wall 128. An object sensor 114B may be provided to form By doing so, there is an advantage that both the toilet booths 110 on both sides of each side wall 128 can be detected by one object sensor 114B. The B-type narrow sensing region 142B illustrated in FIGS. 12A to 12C and the B-type narrow sensing region 142B illustrated in FIGS. 6A and 6B are slightly different in specific shapes, but the space in the toilet booth 110 is different. Among them, the role of selectively sensing only the space near each side wall 128 is the same.

  FIGS. 13A and 13B are a plan view of a toilet booth 110 showing still another modification for forming the B-type narrow sensing region 142B, and a cross-sectional view of the toilet 13 along the line AA.

  In the modification shown in FIGS. 13A and 13B, two object sensors 114B are incorporated in a void in the rear portion of the toilet 132 (for example, a portion having a trap pipe inside that exists behind the toilet seat), Each object sensor 114 </ b> B forms a B-type narrow sensing region 142 </ b> B limited to only a low height range in the vicinity of each side wall 128 that extends toward each side wall 128 while expanding. The B-type narrow sensing region 142B illustrated in FIGS. 13A and 13B and the B-type narrow sensing region 142B illustrated in FIGS. 6A and 6B or FIGS. 11A and 11B are slightly different in specific shapes, but the toilet The role of selectively sensing only the space in the vicinity of each side wall 128 among the spaces in the booth 110 is the same.

  14A and 14B are a plan view of a toilet booth 110 showing a modification for forming the C-type narrow sensing region 142C, and a cross-sectional view of the toilet 13 along the line AA.

  In the modification shown in FIGS. 14A and 14B, an object sensor 114C is attached to a luggage shelf 138 fixed to the upper portion of the back wall 126, and this object sensor 114C is located behind the toilet seat of the toilet 136. A C-type narrow sensing region 142B limited to only a spatial region in the vicinity of the back wall 126 is formed. The C-type narrow sensing region 142C illustrated in FIG. 14A and FIG. 14B and the two left and right C-type narrow sensing regions 142C illustrated in FIG. 7A and FIG. This is the same in selectively sensing only the space behind the toilet seat.

  Next, a modified example in which a wide sensing area and various narrow sensing areas are formed using the scanning method will be described.

  15A and 15B are a plan view and a side view of the toilet booth 110 showing this modification.

  As shown in FIG. 15A, the plane area of the toilet booth 110 is divided into a plurality of, for example, nine sections S1 to S9. As shown in FIG. 15B, the object sensor 114 installed on the ceiling 120 forms a narrow sensing area 142S narrowed in the toilet booth 100 so as to cover almost one section at the same time, and the narrow sensing area 142 By changing the directivity direction to up, down, left and right, the space of the toilet booth 110 is scanned by the narrow sensing area 142S. As a scanning method, a method such as a raster scan in which all the sections S1 to S9 are sequentially checked as shown in FIG. 16 may be used, or which section is checked depending on the situation. You can change the way. A narrow sensing area that scans a plurality of sections in the toilet booth 110 like the narrow sensing area 142S is hereinafter referred to as an “S-type narrow sensing area”.

  The S-type narrow sensing region 142S shown in FIG. 15B plays a role corresponding to one of the wide sensing region 140 and the A to G type narrow sensing regions 142A to G described above depending on which section it is directed to. be able to. For example, the S-type narrow sensing region 142S can play a role corresponding to the A-type narrow sensing region 142A when directed to the sections S1 to S3 in contact with the front wall 124. Also, when directed to the sections S1, S4, S7 or S3, S6, S9 in contact with the left or right side wall 128, it can play a role corresponding to the B-type narrow sensing region 142B, In the case of the sections S7 to S9, it is in the C-type narrow sensing area 142B, in the section S5n near the front and front of the toilet 132, in the D-type cooperative sensing area 142D, and in the section S1 in the vicinity of the handrail 144, the E-type narrow sensing area Each of E can play a corresponding role. Further, the scan results of all the sections S1 to S9 by the S-type narrow sensing region 142S play a role corresponding to the sensing results in the wide sensing region 140 or the F-type narrow sensing region 142F. If the intensity of the transmission wave forming the S-type narrow sensing region 142S is weakened and the minimum height reached by the S-type narrow sensing region 142S is made somewhat higher than the floor 122 as shown by the broken line in FIG. The region 142S can also serve as a G-type narrow sensing region 142G.

  Furthermore, the S-type narrow sensing region 142S uses the following unique sensing by utilizing the detection results of a plurality of sections S1 to S9 by comparing them on the time axis or comparing the sections. Can also be used for purposes. For example, a person's movement in the toilet booth 110 can be determined by analyzing the detection results of the plurality of sections S1 to S9 on the time axis. Further, for example, by checking whether the presence or movement of an object is detected in two or more separated sections in the plurality of sections S1 to S9, or in many sections that do not correspond to one person, the toilet booth 110 is detected. You can also determine whether there are multiple people inside.

  17A and 17B are a cross-sectional view and a plan view showing an example of the configuration of the object sensor 114 for forming the S-type narrow sensing region 142S.

  The object sensor 114 shown in FIGS. 17A and 17B is a radio wave sensor provided with a so-called microstrip antenna for transmitting and receiving microwaves of several GHz to several tens of GHz. The object sensor 114 has a circuit board 150 made of an insulating material, and has an array of a large number of antenna electrodes on the surface of the circuit board 150. That is, on the surface of the circuit board 150, a plurality of, for example, four feeding elements 152 are arranged in a matrix arrangement. A greater number of parasitic elements 154 are arranged in the vicinity of the periphery of these feeder elements 152 so as to surround these feeder elements 152. Each of the feeding element 152 and the parasitic element 154 is a rectangular metal thin film, and functions as an antenna electrode that transmits and receives radio waves.

  A dielectric lens 168 is provided so as to cover the front surface of the array of these antenna electrodes 152 and 153. The material of the dielectric lens 168 is preferably polyethylene, nylon, polypropylene, and fluorine resin having a relatively low relative dielectric constant. Among these, nylon and polypropylene are preferable in view of flame retardancy and chemical resistance, and heat resistance PPS is preferable when considering water resistance. In order to reduce the size or thickness of the dielectric lens 168, a ceramic material such as alumina or zirconia having a relatively high dielectric constant is used as the material of the dielectric lens 168, and the surface of the dielectric lens 168 is made dielectric. It is preferable to cover the thin film of the resin material having a relatively low rate so as to suppress reflection in the dielectric lens 168.

  High frequency power for excitation is directly supplied to the feed element 152 through the power supply wiring 158, but high frequency power for excitation is not directly supplied to the parasitic element 154 (however, high frequency power is supplied through inductive coupling with the feed element 152. Is supplied). An excitation / detection circuit 156 and a power supply wiring 158 connected thereto are provided on the back surface of the circuit board 150, and the power supply wiring 158 and each power supply element 152 are arranged behind the power supply element 152. Are connected through a through-hole wiring 160 provided so as to pass through. The excitation / detection circuit 156 generates high-frequency power for excitation and supplies it to each feed element 152, receives the received wave signal from each feed element 152, detects the intensity of the received wave, And detect the topler signal between the received waves.

  On the back surface of the circuit board 150, a plurality of switches 162 corresponding to the parasitic elements 154 are provided on a one-to-one basis, and a ground electrode 166 is maintained at a ground potential. One terminal of each switch 162 is connected to the ground electrode 166, and the other terminal of each switch 162 is connected to each parasitic element 154 through the circuit board 150 behind each parasitic element 154. They are connected via the hole wiring 164. The excitation / detection circuit 156 generates high-frequency power for excitation and supplies it to each feed element 152, receives the received wave signal from each feed element 152, detects the intensity of the received wave, And detect the topler signal between the received waves. Each switch 162 is turned ON / OFF by a control signal from the outside, and is normally in an OFF state.

  In the object sensor 114 having such a configuration, a large antenna gain can be obtained by employing an array of a large number of antenna electrodes 152 and 154. The directivity of the emitted radio wave beam (in other words, the sensing region) depends on the number of antenna electrodes 152 and 154 arrayed. The larger the number of antenna electrodes 152 and 154, the narrower the directivity angle becomes, and the smaller the directivity angle becomes. The wider the angle.

  Dielectric lens 168 covering the radio wave radiation surface of the array of antenna electrodes 152 and 154 improves the antenna gain and makes the directivity angle narrower. If the directivity angle becomes narrower, the area of the section that is sensed at the same time is reduced, that is, the spatial resolution of sensing is improved, so that detection with higher accuracy becomes possible.

  By turning ON / OFF each switch 162, each parasitic element 154 is switched between a ground state and a float state. By selecting which of the plurality of parasitic elements 154 arranged around the feeding element 152 is to be grounded and not to be grounded, the directivity direction of the radio wave beam (sensing region) can be changed (that is, swung). it can. That is, when all the parasitic elements 154 are in the float state, the directivity direction of the radio wave beam (sensing region) is perpendicular to the circuit board 150. When some of the parasitic elements 154 are selectively grounded, the directivity direction of the radio wave beam (sensing region) is changed from the vertical direction to a direction corresponding to the positional relationship between the grounded parasitic element 154 and the feeder element 152. Tilt. Therefore, by switching the parasitic element 154 to be grounded, the toilet booth 110 can be scanned by swinging the radio wave beam (sensing area) up and down and left and right.

  By swinging the radio wave beam by electrical control in this way, scanning can be performed at a higher speed than in a configuration in which swinging is mechanically performed using a motor or the like. For example, it is easy to repeat the entire scan of the toilet booth 110 at a cycle of about 1 second. If scanning is performed at such a high speed, tracking of the movement of people in the toilet booth 110 as described above is performed. In addition, it is easy to detect multiple people. Further, since a mechanism for moving the object sensor 114 mechanically is unnecessary, it is easy to make the object sensor 114 small.

  Note that the structure of the object sensor 114 shown in FIGS. 16A and 16B is not limited to the purpose of swinging the sensing area, but includes different sensing areas such as the wide sensing area 140 and the A to F type narrow sensing areas 142A to F. The present invention can also be used for making with one object sensor 114. In that case, as a method of switching the directivity angle between the wide angle and the narrow angle, a method of increasing or decreasing the number of parasitic elements to be grounded among the plurality of parasitic elements 154 or a method of moving the dielectric lens 168 to move the antenna electrode 152. , 154, a method of switching whether or not to place the dielectric lens 168 in front of the front of the array can be employed.

  Next, a process performed by the control device 116 in the security system according to this embodiment to determine whether there is an abnormality target based on a sensor signal from the object sensor 114 will be described.

  FIG. 18 shows a flow of processing performed by the control device 116 to determine whether there is an abnormality target.

  In this process, it is assumed that the sensing results in all of the wide sensing area 140 and the A to G type narrow sensing areas 142A to 142G are used. Note that the S-type narrow sensing region 142 can be used in place of the sensing regions 140 and 142A to G as described above, and in this case, the processing described below can be applied.

  In this processing, the sensor signal from the object sensor 114 input to the control device 116 includes a received wave signal indicating the intensity of the received wave and a Doppler signal between the transmitted wave and the received wave. The received wave signal can well represent the presence or absence of a person or object regardless of whether or not the person or object is moving. The Doppler signal can well represent the movement of a person or an object. In order to ensure that toilets, hand-washers, shelves, paper rolls, and other equipment installed in the toilet booth 110 do not interfere with detection of abnormal objects, the sensor signals are processed in advance from the equipment. The signal component due to the reflected wave is processed and removed, or for equipment that is placed in a location that does not necessarily need to be sensed, the radiation direction of the radio wave is controlled so that the location is excluded from the sensing area Can do.

  As shown in FIG. 18, the control device 116 starts this process after the power is turned on (step 170). First, the object sensor 114 senses the wide sensing region 140, and the sensor signal obtained from the wide sensing region 140 is obtained. Are analyzed (step 172). The control device 116 determines whether or not a person has entered the toilet booth 110 from a change in the amplitude of the received wave signal and / or the Doppler signal from the wide sensing area 140 (step 174). Since the wide sensing area 140 used for the determination covers almost the entire area of the toilet booth 100, not only when a person enters the toilet booth 110 through the door 130, but also the side wall 128 from the adjacent toilet booth. Even when the user enters over the toilet booth 110 when there is a window in the toilet booth 110, that is, when entering the toilet booth 110 by any method, this can be reliably detected.

  As a result, when it is detected that a person has entered the toilet booth 110, the control device 116 causes the object sensor 114 to sense not only the wide sensing area 140 but also the A to G type narrow sensing areas 142A to G, The sensor signal from each sensing region 140, 142A-G is analyzed (step 178). In this analysis, it is determined whether or not there is an abnormality target in the toilet booth 110 and whether or not a person has left the toilet booth 110. A method for determining whether there is an abnormality target will be described in detail later. In addition, regarding the determination of whether or not a person has left the toilet booth 110, for example, if the presence of an object is not detected in all the sensing areas 140 and 142A to G, it can be determined that the person has left.

  As a result, when an abnormal object is detected (step 178), the control device 116 notifies other people who enter the toilet room 108 or the vicinity of the toilet room 108 (step 180). Further, when it is detected that a person has left the toilet booth 110, the control device 116 returns the control to step 172.

  FIG. 19 shows an example of a method for determining the presence or absence of an abnormality target based on sensor signals from the A to G type narrow sensing regions 142A to 142G in step 176 of FIG.

  FIG. 19 shows a plurality of conditions 200 to 210, and when any of these conditions 200 to 210 is satisfied, it is determined that there is an abnormality target in the toilet booth 110. The first condition 200 is that the A-type narrow sensing region 142A or the B-type narrow sensing region 142B (that is, the vicinity of the front wall 124 or the left or right side wall 128) is longer than a predetermined time T1 (for example, about 10 minutes). This is a case where the presence of an object continues to be detected. In normal toilet use, there is hardly any person or thing remaining in the vicinity of the front wall 124 or the side wall 128 for a time T1 (for example, about 10 minutes).

  The second condition 202 is a case where the presence of an object is detected for a predetermined time T2 (for example, about 5 to 10 seconds) in the C-type narrow sensing region 142C (that is, a region behind the toilet seat of the toilet bowl 132). Here, the predetermined time T2 (for example, about 5 to 10 seconds) is for eliminating a case where a hand or the like temporarily enters due to picking up a lost article or the like. Or it means that the object has entered the C-type narrow sensing region 142C. In normal toilet use, people or objects rarely enter the area behind the toilet seat.

  The third condition 204 is a predetermined level for a predetermined time T3 (for example, about 1 minute) or more in the D-type narrow sensing region 142D or the E-type narrow sensing region 142E (that is, the vicinity of the front part of the toilet 132 or the vicinity of the handrail 144). This is a case where the presence of an object that does not move as described above is detected. Ordinary toilet users make noticeable movements in this area, such as by changing clothes, but rarely stay in this area without much movement.

  Here, the magnitude of the movement of the person can be determined based on the Doppler signal. For example, when a person is changing clothes, the amplitude of the Doppler signal 212 is considerably large as illustrated in FIG. On the other hand, when a person is lurking in the toilet booth 110, as illustrated in FIG. 21, the amplitude of the Doppler signal 212 is clearly smaller than that in FIG. Here, the section 214 in FIG. 21 corresponds to the case where the person hardly moves, and the section 216 corresponds to the case where the person moves slightly. Therefore, as shown in FIGS. 20 and 21, upper and lower thresholds Vth1 and Vth2 for identifying the movement of changing clothes are provided, and the upper and lower peaks of the Doppler signal 212 are determined when the third condition 204 is determined. By comparing the level with these threshold values Vth1 and Vth2, it is possible to determine whether or not the object has a movement of a predetermined level or more (movement corresponding to changing clothes). Furthermore, as illustrated in FIG. 21, threshold values Vth3 and Vth4 for identifying smaller amplitudes are provided in the range of threshold values Vth1 and Vth2, and the upper and lower peak levels of the Doppler signal 212 and these threshold values Vth3 and Vth4 are set. By comparing, it is also possible to distinguish whether the object hardly moves or moves slightly. When the object hardly moves, it can be estimated that the object is a person who cannot move due to a physical abnormality or an object other than a person.

  The fourth condition 206 is an F-type narrow sensing area 142F or a G-type sensing area 142G (that is, any place in the plane area of the toilet booth 110) over a predetermined long time T3 (for example, about 15 minutes) or more. Is detected. A normal toilet user rarely stays in the toilet booth 110 for such a long time.

  The fifth condition 208 is a case where an object is detected over a predetermined time T5 (for example, about 2 to 3 minutes) or more in the F-type narrow sensing region 142F, but no object is detected in the G-type sensing region 142G. In this case, it is estimated that a suspicious object has been placed in the toilet booth 110, or that a person has fallen or has taken an unnaturally low posture. In the fifth condition 208, no object was detected in either the F-type or G-type narrow sensing areas 142F, 142G before the person entered the toilet booth 110, but the F-type or G-type after leaving the room. A case where an object is detected in the narrow sensing regions 142F and 142G is also included. In this case, it is estimated that a suspicious object has been placed in the toilet booth 110.

  The sixth condition 210 is a case where an object is detected in a plurality of areas in the toilet booth 110 based on sensor signals from the A to G type narrow sensing areas 142A to 142G. Alternatively, it may be a case where an object moving in a plurality of regions is detected in consideration of movement. In this case, there is a possibility that a plurality of people are in the toilet booth 110.

  The above conditions 200 to 210 are merely examples. Other conditions may be employed, or any of the above conditions 200 to 210 may not be employed. In any case, after it is detected from a sensing result in the wide sensing area 140 that a person has entered the toilet booth 110, one or more narrow sensing areas 142 limited to a specific space area in the toilet booth 110 are used. The accuracy of detecting an abnormal object is improved by determining the presence or absence of the abnormal object using the sensing result of.

  Next, a reporting method in the security system according to this embodiment will be described.

  In the security system according to this embodiment, the following three types of notification are performed.

  (1) The user of each toilet booth 110 is notified of the usage status in the adjacent toilet booth and an abnormal state (that is, an abnormal target has been detected).

  (2) The user of each toilet room 108 is notified of the usage status of the toilet room 108, the usage status of the plurality of toilet booths 110 in the toilet room 108, and the abnormal state in the toilet booth 110.

  (3) Notifying a person in the vicinity of the toilet room 108 outside each toilet room 108 of the usage status of the plurality of toilet booths 110 in the toilet room 108 and abnormal states in the toilet booths 110.

  In this way, whether or not there is a user in the toilet booth 110 and the abnormal state are notified separately. In addition, the suspicious person in the toilet booth 100 is informed that the inside of the toilet booth 110 is in an abnormal state, and is urged to recognize that the state in the toilet booth 110 is in a monitoring system and stop abnormal actions. This is done along with the notification to other users as described in (1) to (3) above, or the suspicious person is notified first, and then the abnormal state continues. Moreover, you may comprise so that the alerting | reporting to another user may be started. Alternatively, if the abnormal state continues, the door 130 of the toilet booth 110 is automatically locked so that it cannot be unlocked from the inside, and a suspicious person can freely come out of the toilet booth 110, Another user may be prevented from accidentally entering the toilet booth 110 and touching a suspicious object. As a result, the safety of other users is better secured, and it becomes easier for the guards and the managers to take coping actions.

  FIG. 22 shows an example of a notification device 118 installed in the toilet booth 110.

  The notification device 118 is a lighting device (for example, an LED lamp set) that outputs light, and is installed at a position in the toilet booth 110 that is easily visible to the user. The notification device 118 receives the processing result shown in FIG. 18 by the control device 116 for the toilet booth adjacent to the toilet booth 110. In the notification device 118, for example, the usage status of whether or not there is a user in the adjacent toilet booth and the abnormal state of whether or not an abnormality target is detected in the adjacent toilet booth are displayed, for example, display color and lighting time. , And display by distinguishing according to the flashing mode, the position or number of lighting lamps. The user of the toilet booth 110 can quickly take a coping action when an abnormal object is detected in the adjacent toilet booth.

  FIG. 23 shows another example of the notification device 118 installed in the toilet booth 110.

  The notification device 118 is a speaker that outputs sound, and displays the usage status and abnormal state of the adjacent toilet booth, for example, by distinguishing them according to tone color, sound intensity, ringing time, ringing mode, generated words, and the like.

  FIG. 24 shows another example of the notification device 118 installed in the toilet booth 110.

  The notification device 118 is a display panel device that displays characters and images, and displays the usage status and abnormal state of the adjacent toilet booth, for example, by distinguishing them with character messages, images, display colors, and the like.

  FIG. 25 shows an example of a notification device 118 installed outside the toilet booth 110.

  The notification device 118 is a lighting device that outputs light (for example, an LED lamp set), and is located outside the toilet booth 110 and near the toilet booth 110 (for example, a door of the toilet booth 110). (Upward). The processing result shown in FIG. 18 by the control device 116 for the toilet booth 110 is input to the notification device 118. On the notification device 118, the usage status of the toilet booth 110 is displayed by being distinguished, for example, by display color, lighting time, blinking mode, lighting lamp position or number. Other people outside the toilet booth 110 can take action immediately when an abnormal subject is detected in the toilet booth 110.

  FIG. 26 shows another example of the notification device 118 installed outside the toilet booth 110.

  The notification device 118 is a speaker that outputs sound, and displays the usage status and abnormal state of the toilet booth 110 by distinguishing them according to, for example, timbre, sound intensity, ringing time, ringing mode, generated words, and the like.

  FIG. 27 shows still another example of the notification device 118 installed outside the toilet booth 110.

  The notification device 118 is a display panel device that displays characters and images, and displays the usage status and abnormal state of the toilet booth 110 by distinguishing them using, for example, character messages, images, display colors, and the like.

  FIG. 28 shows an arrangement example of the notification device 118 for reporting to people in the toilet room 108 or the vicinity thereof.

  As shown in FIG. 28, not only the inside of each toilet room 110 and the vicinity of the door as described above, but also a notification device 118 can be attached to various places in each toilet room 108. In addition, the notification device 118 may be attached outside each toilet room 108 or in the vicinity thereof outside the toilet facility 100. It is possible to notify the people in the toilet room 108 and people nearby in the vicinity of the presence of the abnormal object in any of the toilet booths 110, and promptly deal with it. In addition, not only the abnormal state but also the usage status of the toilet booth 110 is notified, so that particularly in the case of the large-sized toilet facility 100, it helps to find the toilet booth 110 that is empty. The state of the plurality of toilet booths 110 may be collectively displayed on one notification device 118.

  Next, a sensing method in the toilet booth 110 and a method for determining whether there is an abnormality target when the toilet in the toilet booth 110 is a Japanese style toilet will be described.

  29A and 29B are a plan view and a side view of the toilet room 110 showing an example of an A-type narrow sensing region in the toilet booth 110 including the Japanese-style toilet bowl 220. FIG.

  As shown in FIGS. 29A and 29B, in the example described below, in the case of the Japanese style toilet 220, the rear side (the rear side as viewed from the user at the time of stool) faces the front wall 124 with the door. Further, the front side (front side as viewed from the user at the time of stool) faces the back wall 126, and this direction is opposite to the case of the Western style toilet 132 described above. As illustrated, an A-type narrow sensing region 142 </ b> A is formed in the vicinity of the front wall 124 behind the toilet 220 by the object sensor 114 on the ceiling 120. In the A-type narrow sensing region 142A, dressing and the like are often performed, but in normal use, there is almost no person here for a long time.

  30A and 30B are a plan view and a front view of the toilet booth 110 showing an example of a B sensing area formed in the toilet booth 110 provided with the Japanese-style toilet bowl 220. FIG.

  As shown in FIGS. 30A and 30B, the object sensor 114 on the ceiling 120 forms a B-type narrow sensing region 142B in the vicinity of the side wall 128 away from the toilet 220 in the left-right direction. Although people may enter the B-type narrow sensing region 142B by changing clothes or the like, they usually do not usually stay for a long time.

  31A and 31B are a plan view and a side view of the toilet booth 110 showing an example of a C-type narrow sensing region formed in the toilet booth 110 including the Japanese-style toilet bowl 220. FIG.

  As shown in FIGS. 31A and 31B, a C-type narrow sensing region 142A is formed in the vicinity of the rear wall 126 in front of the toilet bowl 220 by the object sensor 114 attached to the storage rack. In the case of the Japanese style toilet 220, the possibility that a person enters the C-type narrow sensing area 142C is not as low as in the case of the Western style toilet 132, but in normal use, the C-type narrow sensing area 142C is temporarily Once you enter, you will rarely stay there.

  FIGS. 32A and 32B are a plan view and a side view of the toilet booth 110 showing an example of a D-type narrow sensing region formed in the toilet booth 110 provided with the Japanese-style toilet bowl 220.

  As shown in FIGS. 32A and 32B, the object sensor 114 on the ceiling 120 forms a D-type narrow sensing region 142D in the toilet 220 and in the vicinity thereof. In the D-type narrow sensing region 142D, a person is detected most frequently, but in normal use, the person does not move so much and hardly stays for a long time.

  FIGS. 33A and 33B are a plan view and a front view of the toilet booth 110 showing an example of an E-type narrow sensing region formed in the toilet booth 110 provided with the Japanese-style toilet bowl 220. FIG.

  As shown in FIGS. 33A and 33B, the object sensor 114 on the ceiling 120 forms an E-type narrow sensing region 142E in the vicinity of the handrail 144. Even in the E-type narrow sensing region 142D, a person is often detected, but in normal use, the person does not move so much and hardly stays for a long time.

  FIGS. 34A and 34B are a plan view and a side view of the toilet booth 110 showing examples of F-type and G-type narrow sensing regions formed in the toilet booth 110 provided with the Japanese-style toilet bowl 220.

  As shown in FIGS. 34A and 34B, an F-type narrow sensing region 142F is formed so as to cover almost the entire planar region of the toilet booth 110 at a low height range, and the toilet booth 110 at a higher height range is formed. G-type narrow sensing region 142G is formed so as to cover almost the entire planar region.

  FIGS. 35A and 35B are a plan view of the toilet booth 110 and a side view of the toilet 220 showing a modification for forming a B-type narrow sensing region in the toilet booth 110 provided with the Japanese-style toilet 220. FIG.

  As shown in FIGS. 35A and 35B, an object sensor for forming a B-type narrow sensing region 142B on both the left and right sides, together with an operation switch 222 of the flash valve, in a flush valve box for flowing flush water to the toilet 220. 114B is incorporated.

  FIG. 36 shows an example of conditions for detecting the presence of an abnormal object in the toilet booth 110 equipped with the Japanese-style toilet bowl 220 as described above.

  As shown in FIG. 36, when any one of the plurality of conditions 200, 230, 204 to 210 is satisfied, it is determined that there is an abnormality target in the toilet booth 110. Conditions 200 and 204 to 210 are the same as in the case of the toilet booth 110 provided with the Western-style toilet 132, which has already been described with reference to FIG. The second condition 230 is different from the case of the toilet booth 110 provided with the Western-style toilet bowl 132. The second condition 230 is a case where an object continues to be detected over a predetermined time T6 (for example, about 1 to 2 minutes) shorter than the time T1 in the C-type sensing region 142C. If an object is detected in the area in front of the toilet 220 over this amount of time, the object is determined to be an abnormal target.

  As mentioned above, although embodiment of this invention was described, this embodiment is only the illustration for description of this invention, and is not the meaning which limits the scope of the present invention only to this embodiment. The present invention can be implemented in various other modes without departing from the gist thereof. For example, various variations other than the above-described examples can be adopted for the type, location, and number of object sensors. Various variations other than the above-described examples can be adopted for the location, size, and type of the narrow sensing region. Various variations other than the above-described examples can be adopted as conditions for determining the presence or absence of an abnormality target.

The top view which shows an example of the public toilet facility where the security system concerning one Embodiment of this invention is applied. 1 is a block diagram showing the overall configuration of a security system according to an embodiment of the present invention. It is a perspective view which shows the structural example of one toilet booth 110. FIG. FIG. 4A is a plan view of a toilet booth 110 showing an example of a wide sensing area of the object sensor 114, and FIG. 4B is a side view thereof. FIG. 5A is a plan view of a toilet booth 110 showing an example of a narrow sensing area of the object sensor 114, and FIG. 5B is a side view of the area. FIG. 6A is a plan view of a toilet booth 110 showing an example of another narrow sensing area of the object sensor 114, and FIG. 6B is a front view thereof. FIG. 7A is a plan view of a toilet booth 110 showing an example of another narrow sensing region of the object sensor 114, and FIG. 7B is a side view thereof. FIG. 8A is a plan view of a toilet booth 110 showing an example of still another narrow sensing area of the object sensor 114, and FIG. 8B is a side view thereof. FIG. 9A is a plan view of a toilet booth 110 showing an example of still another narrow sensing area of the object sensor 114, and FIG. 9B is a front view thereof. FIG. 10A is a plan view of a toilet booth 110 showing two examples of still another narrow sensing region included in the object sensor 114, and FIG. 10B is a side view thereof. 11A is a plan view of a toilet booth 110 showing a modification for forming the A-type narrow sensing region 142A in the toilet booth 110, and FIG. 11B is a side view thereof. 12A is a plan view of a toilet booth 110 showing a modification for forming the B-type narrow sensing region 142B in the toilet booth 110, FIG. 12B is a front view thereof, and FIG. 12C shows another modification. The top view of the toilet booth 110. FIG. 13A is a plan view of the toilet booth 110 showing another modification for forming the B-type narrow sensing region 142B in the toilet booth 110, and FIG. 12B is a cross-sectional view taken along line AA of the toilet 132 shown in FIG. 12A. . 14A is a plan view of a toilet booth 110 showing another modification for forming the C-shaped narrow sensing region 142C in the toilet booth 110, and FIG. 14B is a side view thereof. FIG. 15A is a plan view of a toilet booth 110 showing a modified example in which a wide sensing area and various narrow sensing areas are formed using a scanning method, and FIG. 15B is a side view thereof. The figure which shows the example of the sensor signal obtained when a toilet booth is raster-scanned in the narrow sensing area | region shown to FIG. 15B. FIG. 17A is a cross-sectional view showing an example of the configuration of the object sensor 114 for forming the S-type narrow sensing region 142S, and FIG. 17B is a plan view thereof. The flowchart which shows the flow of the process which judges the presence or absence of the abnormality target which the control apparatus 116 performs. The figure which shows the example of a method which judges the presence or absence of an abnormality target based on the sensor signal from A-G type | mold narrow sensing area | region 142A-G in step 176 of FIG. The figure which shows the example of the Doppler signal 212 obtained when a person is moving by changing clothes. The figure which shows the example of the Doppler signal 212 obtained when the person is not moving or movement is small. The perspective view which shows the example of the alerting | reporting apparatus 118 installed in the toilet booth 110. FIG. The perspective view which shows another example of the alerting | reporting apparatus 118 installed in the toilet booth 110. FIG. The perspective view which shows another example of the alerting | reporting apparatus 118 installed in the toilet booth 110. FIG. The perspective view which shows the example of the alerting | reporting apparatus 118 installed outside the toilet booth 110. FIG. The perspective view which shows another example of the alerting | reporting apparatus 118 installed outside the toilet booth 110. FIG. The perspective view which shows another example of the alerting | reporting apparatus 118 installed outside the toilet booth 110. FIG. The top view which shows the example of arrangement | positioning of the alerting | reporting apparatus 118 for alerting | reporting to the people in the toilet room 108 or its vicinity. FIG. 29A is a plan view of a toilet booth 110 showing an example of an A-type narrow sensing region formed in a toilet room 110 having a Japanese-style toilet 220, and FIG. 29B is a side view thereof. FIG. 30A is a plan view of the toilet booth 110 showing an example of a B sensing area formed in the toilet booth 110 provided with the Japanese-style toilet bowl 220, and FIG. 30B is a front view thereof. FIG. 31A is a plan view of the toilet booth 110 showing an example of a C-type narrow sensing region formed in the toilet booth 110 having the Japanese-style toilet 220, and FIG. 31B is a side view thereof. 32A is a plan view of the toilet booth 110 showing an example of a D-type narrow sensing region formed in the toilet booth 110 provided with the Japanese-style toilet bowl 220, and FIG. 32B is a side view thereof. FIG. 33A is a plan view of the toilet booth 110 showing an example of an E-type narrow sensing region formed in the toilet booth 110 provided with the Japanese-style toilet bowl 220, and FIG. 33B is a front view thereof. FIG. 34A is a plan view of the toilet booth 110 showing examples of the F-type and G-type narrow sensing areas formed in the toilet booth 110 provided with the Japanese style toilet 220, and FIG. 34B is a side view thereof. FIG. 35A is a plan view of a toilet booth 110 showing a modification in which a B-type narrow sensing region is formed in the toilet booth 110 provided with a Japanese-style toilet bowl 220, and FIG. 35B is a side view of the toilet bowl. The figure which shows the example of conditions for detecting presence of an abnormal object within the toilet booth 110 provided with the Japanese style toilet bowl 220. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Public toilet facilities 108 Toilet room 110 Toilet booth 114 Object sensor 116 Control apparatus 118 Notification apparatus 120 Ceiling 122 Floor 124 Front wall 126 Back wall 128 Side wall 130 Door 132 Western-style toilet 140 Wide sensing area 142A A type narrow sensing area 142B B type Narrow sensing area 142C C type narrow sensing area 142D D type narrow sensing area 142E E type narrow sensing area 142F F type narrow sensing area 142G G type narrow sensing area 142S S type narrow sensing area
S1-S9 division 200-210, 230, 232 criteria 220 Japanese style toilet

Claims (11)

In a security system for detecting abnormal objects in a toilet booth equipped with a Japanese-style toilet,
Sensor means for detecting a person or thing in one or more partial areas in the toilet booth;
Receiving a sensor signal from the sensor means, and determining means for determining whether there is an abnormality target in the toilet booth,
The determination means determines that there is an abnormality target when a person or an object is detected for a predetermined time or more in the first partial area in the vicinity of the partition wall from the adjacent toilet booth by the sensor means.
Security system. The security system according to claim 1,
The determination means determines that there is an abnormality target even when a person or an object is detected for a predetermined time or more in the second partial region in front of the Japanese-style toilet by the sensor means.
Security system. The security system according to claim 1,
The determination means determines that there is an abnormality target even when a person or an object is detected for a predetermined time or longer in the third partial area behind the Japanese-style toilet by the sensor means,
Security system. The security system according to claim 1,
The determination means uses the sensor means to detect that a person or an object that has not moved more than a predetermined level for a predetermined time or more in the fourth partial area in the vicinity of the Japanese-style toilet bowl or the fifth partial area in the vicinity of the handrail. Even if it is detected, it is determined that there is an abnormality target.
Security system. The security system according to claim 1,
The determination means detects a person or an object in the sixth partial area set in the first height range near the floor in the toilet booth by the sensor means, but the first height range Even if no person or object is detected in the seventh partial region set to a higher second height range, it is determined that there is an abnormality target,
Security system. The security system according to claim 1,
The determination means determines that there is an abnormality target even when a person or an object is detected substantially simultaneously in a plurality of different partial areas in the toilet booth by the sensor means,
Security system. The security system according to claim 1,
The sensor means can also detect that a person has entered the entire area of the toilet booth,
After the detection means detects that a person has entered the entire area of the toilet booth by the sensor means, the determination means determines whether there is an abnormality target based on the detection result of the person or thing in the partial area by the sensor means. to decide,
Security system. The security system according to claim 1,
The sensor means has a scan type object sensor that divides the entire area of the toilet booth into a plurality of sections and detects a person or an object in each section while scanning the plurality of sections.
Security system. The security system according to claim 9, wherein
The scanning object sensor is
A microstrip antenna electrode array that includes a plurality of feeder elements and a plurality of parasitic elements arranged on a substrate, and transmits radio waves for forming the scan-type sensing region;
A switch for selectively grounding each parasitic element in the microstrip antenna electrode array, and changing the selection of the grounded parasitic element to change the direction of the radio wave forming the scan-type sensing region To change direction,
Security system. The security system according to claim 1,
In response to the determination means, further comprising a notification means for notifying a determination result to a person in a toilet booth next to the toilet booth or a nearby toilet room,
Security system. In a method for detecting an abnormal subject in a toilet booth equipped with a Japanese-style toilet,
Detecting a person or object in one or more partial areas in the toilet booth;
Receiving the detection result in the partial area, and determining whether there is an abnormality target in the toilet booth,
In the determination step, when a person or an object is detected for a predetermined time or more in the first partial area near the partition wall from the adjacent toilet booth, it is determined that there is an abnormality target.
Method.

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