JP2019202123A - Toilet booth long stay inhibition device - Google Patents

Abstract

To provide a toilet booth long stay inhibition device capable of accurately detecting a user's long stay in a toilet booth.SOLUTION: A toilet booth long stay inhibition device 1 includes: a detection unit 2 for detecting a user's occupation; a calling sound output unit 3 capable of outputting attention calling sound; and a control unit 4 for controlling the calling sound output unit 3 on the basis of a detection signal from the detection unit 2. The detection unit 2 includes a sensor 2a of a frequency modulated continuous wave radar system for measuring a distance to an object to be detected. The control unit 4 measures a use time during which the user uses the toilet booth and controls the calling sound output unit 3 so that the calling sound output unit outputs first attention calling sound when the measured use time exceeds a preset upper limit value.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a toilet booth long-living deterrence device that deters long stay of a user who uses a toilet booth.

  In recent years, in public toilets or office toilets, it has become a problem that a user using a toilet booth occupies the toilet booth for a long time, that is, a user using the toilet booth stays in the toilet booth for a long time. ing. For example, it takes a long time to occupy the toilet booth due to the use of the toilet booth as a place to use a smartphone or a portable game machine. Therefore, even when multiple toilet booths are installed in the toilet, all the toilet booths are likely to be in use, and there is a situation where a person who wants to finish the toilet can wait without using the toilet booth. .

  As countermeasures against this situation, whether or not a user is present in the toilet booth is detected, and attention to exclusive use is directed to the toilet booth, for example, by outputting an alarm sound. There is a toilet booth deterrence device.

  In Japanese Patent Application Laid-Open No. 2017-159033 (Patent Document 1), in the ceiling-hiding concealed toilet booth long-living deterrent device, detection means for detecting a human body in the toilet booth and sounding sound can be output toward the toilet booth A technology is disclosed that includes arousing means composed of a simple sound generator and a control unit that controls the output of the arousal in the arousing means based on detection of a human body by the sensing means.

In the technique described in Patent Document 1, the detection means radiates microwaves that pass through the ceiling material toward the toilet booth, and detects the biological information of the human body in the toilet booth by the topler effect. Consists of. Further, the control means has a timer for counting the occupancy time in the toilet booth based on the detection of the biological information by the detection means, and when the occupancy time in the toilet booth by the timer exceeds a predetermined time, Cause output to occur.
Further, the following techniques are disclosed as techniques for detecting an object to be detected using a Doppler effect or the like in a toilet or the like.

  In JP2013-142221A (Patent Document 2), in a toilet apparatus, a toilet seat, a Doppler sensor that acquires information about a detected object by a reflected wave of a radiated radio wave, and a detection signal output from the Doppler sensor. A technology is disclosed that includes a control unit that determines whether the user is away from the toilet seat and outputs a control signal.

  Japanese Patent Application Laid-Open No. 2013-72270 (Patent Document 3) includes a technology including a Doppler sensor that transmits and receives radio waves and a control unit that performs predetermined control based on an output signal of the Doppler sensor in a toilet apparatus. Is disclosed.

  In Japanese Unexamined Patent Application Publication No. 2011-196069 (Patent Document 4), in a toilet apparatus, a transmission unit transmits a microwave that becomes a transmission wave in a predetermined direction, a reception unit receives a reflected wave with respect to the transmission wave, A technique including a Doppler sensor unit that generates a Doppler signal having a frequency difference from a reflected wave is disclosed.

  In Japanese Patent Application Laid-Open No. 2017-194357 (Patent Document 5), a sensor device transmits a radio wave, receives a reflected wave reflected by an object and receives a sensor signal having frequency characteristics corresponding to the movement of the object. A sensor for output; a first determination unit that determines whether or not the object is a person based on frequency characteristics of the sensor signal; and a state of movement of the object based on the frequency characteristics of the sensor signal when the object is a person A technology including a second determination unit that determines

  Japanese Patent Application Laid-Open No. 2017-134895 (Patent Document 6) discloses a reflected wave obtained by emitting a transmission wave by electromagnetic waves and reflecting the transmission wave by an object in a monitoring device that detects the body condition of the care recipient. A radio wave sensor that generates a Doppler signal by synthesizing the transmitted wave and the reflected wave, and a signal processing unit that determines the body condition of the care recipient based on the Doppler signal generated by the radio wave sensor. Techniques for providing are disclosed.

JP 2017-159033 A JP2013-142221A JP 2013-72270 A JP 2011-196069 A JP 2017-194357 A JP 2017-134895 A

  In the sensor using the Doppler effect described above, when the detection accuracy for detecting whether a user is present in the toilet booth is increased, the door that is pulled and opened when the user leaves the toilet booth. It will also detect the movement of the door until it is bounced against the wall stopper and stops. Depending on the strength with which the user pulls and opens the door, the door of the toilet booth may bounce about 4-6 times against the stopper and then stop. In such a case, for example, in Patent Document 1 above The described timer for counting the occupancy time in the toilet booth is not immediately turned off until the door is stationary, even though the user is not already in the toilet booth. Therefore, after the previous user leaves the toilet booth, if the later user enters the toilet booth while the door is bouncing, the timer count is taken over. Immediately after sitting on the toilet seat, the room time in the toilet booth exceeds a predetermined time, and an alarm sound is output. That is, there is a problem that it is impossible to accurately detect that the user is staying in the toilet booth.

  An object of the present invention is to provide a technique capable of accurately detecting that a user is staying in a toilet booth in a toilet booth long-living deterrence device that deters long stay of a user who uses a toilet booth.

  Of the inventions disclosed in the present application, the outline of typical ones will be briefly described as follows.

  The toilet booth long residence prevention device of one embodiment of the present invention is a toilet booth long residence prevention device that inhibits the long stay of a user who uses the toilet booth. The toilet booth long-living deterrent device is provided in a housing provided in the back of the ceiling of the toilet booth, a detection unit that is provided in the housing, and detects a user's occupancy in the toilet booth, And a sound output unit capable of outputting a first caution sound toward the toilet booth, and a first sound signal generated by the sound output unit provided on the housing and based on a detection signal from the detection unit. And a control unit for controlling the output. The detection unit transmits the first radio wave toward the toilet booth, and receives the first wave of the first radio wave and the second frequency of the reflected wave at the moment when the first radio wave receives the reflected wave reflected by the object to be detected. The first sensor of the frequency modulation continuous wave radar system which measures the 1st distance with a to-be-detected object based on the frequency difference which is the difference of these is included. The control unit determines a first time point when the user enters the toilet booth based on the first distance measured by the first sensor, and the user sets the toilet based on the determined first time point and the detection signal. Arousal sound output unit that measures the usage time of the booth and outputs the first caution sound when the measured usage time exceeds the preset upper limit. To control.

  Among the inventions disclosed in the present application, effects obtained by typical ones will be briefly described as follows.

  According to a typical embodiment of the present invention, in a toilet booth long-living deterrence device that deters the long stay of a user who uses a toilet booth, it is possible to accurately detect that the user is staying in the toilet booth. it can.

It is a figure which shows typically an example of the installation state of the toilet booth long residence prevention apparatus of embodiment. It is a block diagram which shows an example of the toilet booth long residence prevention apparatus of embodiment. It is a figure which shows an example of the toilet booth long residence prevention apparatus of embodiment. It is a graph which shows the intensity | strength of the detection signal for every distance measured with the sensor of a FMCW radar system. It is a graph which shows typically the time change of the distance measured by the sensor of a FMCW radar system.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiment, and the repetitive description thereof will be omitted.
(Embodiment)

Below, the toilet booth long residence prevention apparatus of embodiment which is one embodiment of this invention is demonstrated. The toilet booth long residence prevention device of the present embodiment is a toilet booth long residence prevention device that inhibits the long stay of a user who uses the toilet booth. In addition, the toilet booth long residence prevention apparatus of this Embodiment is a ceiling back concealed toilet booth long residence prevention device installed so that it may not be visible to the user behind the ceiling of the toilet booth.
<Installation status of the toilet booth long residence deterrence device>

First, the installation state of the toilet booth long residence prevention device of the present embodiment will be described. Drawing 1 is a figure showing typically an example of the installation state of the toilet booth long residence prevention device of an embodiment.
As shown in FIG. 1, a ceiling material C of the toilet room A is extended above the toilet booth B of the toilet room (rest room) A.

  The ceiling material C is made of a material with little microwave transmission loss, and is made of, for example, a single gypsum board used as a normal ceiling finishing material. Moreover, in the toilet booth long residence deterring device of this embodiment, the microwave radiated wave and reflected wave from this device are transmitted without any problems even if it is a ceiling material having a thickness of 18 mm by overlapping two plaster boards. The device has been verified to work properly.

  In public toilets or office toilets, the ceiling material C of the toilet room A is often made of the above-mentioned gypsum board, and the ceiling of the toilet room A is stretched with a ceiling finishing material with low microwave transmission loss. It is common that In addition, although one toilet booth B is represented in the toilet room A of FIG. 1, a plurality of toilet booths are arranged in a direction perpendicular to the paper surface of FIG. The toilet booth B is illustrated.

As shown in FIG. 1, the toilet booth long-living deterrent device 1 according to the present embodiment is a ceiling back surface of a ceiling material C so as to be positioned above a human body E as a user sitting on a toilet seat D of a Western-style toilet. Installed. In addition, for each toilet booth B, one toilet booth long residence deterring device 1 is installed.
<Toilet booth long residence deterrence device>

  Next, the toilet booth long residence prevention device of the present embodiment will be described. FIG. 2 is a block diagram illustrating an example of the toilet booth long residence prevention device according to the embodiment. FIG. 3 is a diagram illustrating an example of a toilet booth long residence prevention device according to the embodiment. FIG. 3A is a perspective view when the toilet booth long residence prevention device is viewed obliquely from above, and FIG. 3B is a bottom view when the toilet booth long residence prevention device is viewed from below.

As shown in FIGS. 2 and 3, the toilet booth long residence prevention device 1 includes a detection unit 2, an arousing sound output unit 3, a control unit 4, and a housing 5. The housing 5 is provided behind the ceiling of the toilet booth B, and is provided by incorporating the detection unit 2, the sound output unit 3, and the control unit 4 inside the housing 5. For example, when the housing 5 does not have a box shape, the detection unit 2, the sound output unit 3, and the control unit 4 may not be provided inside the housing 5. For example, you may provide above or the side of the housing | casing 5. FIG. The casing 5 has a semi-cylindrical shape (a shape obtained by cutting a cylinder vertically), and includes oval side portions 5a and 5b, a front portion 5c, a back portion (not shown), and a top surface portion 5d. And the mounting surface 7.
[Detector]

  The detection part 2 detects the presence in a user's toilet booth. The detection unit 2 includes a frequency-modulated continuous wave (FMCW) radar-type sensor 2a.

The sensor 2a radiates radio waves that pass through the ceiling material C toward the toilet booth B located below the installation location of the toilet booth long-living deterrence device 1, and the user as an object to be detected in the toilet booth B The distance between the human body E and the sensor 2a is measured. In other words, the sensor 2a transmits a radio wave toward the toilet booth B, receives a reflected wave reflected by the user's human body E as an object to be detected, and transmits the moment when the reflected wave is received. The distance between the object to be detected and the sensor 2a is measured based on the frequency difference that is the difference between the frequency of the radio wave and the frequency of the received reflected wave. FMCW radar is a kind of continuous wave radar, which employs frequency modulation (FM) as a modulation method, and changes the reflected wave while changing the frequency so that the time dependence of the frequency becomes, for example, a sawtooth waveform. It is a radar that calculates the distance from the frequency difference (beat frequency) between the transmitted wave and reflected wave at the moment of receiving the signal.
The sensor 2a detects the human body E of the user who enters and leaves the toilet booth B, including the entire area in the toilet booth B including the position of the door F of the toilet booth B.

  Here, as a toilet booth long residence prevention device of a comparative example, for example, as in the technique described in Patent Document 1, the detection unit 2 includes a Doppler radar type sensor, but does not include an FMCW radar type sensor. That is, consider the case where the detection unit 2 uses only the Doppler effect. In such a comparative example, the detection unit 2 detects an object to be detected only by the Doppler effect. In addition, since the sensor using the Doppler effect detects the movement of the object itself, for example, the movement of the body motion, heartbeat, and lung respiration is detected, but the distance from the transmission source to the object is not detected.

  Therefore, in the sensor using the Doppler effect, when the detection accuracy for detecting whether the user is present in the toilet booth is increased, the door that is pulled and opened when the user leaves the toilet booth. It will also detect the movement of the door until it is bounced against the wall stopper and stops. Depending on the strength with which the user pulls and opens the door, the door of the toilet booth may bounce about 4-6 times against the stopper and then stop. In such a case, for example, in Patent Document 1 above The described timer for counting the occupancy time in the toilet booth is not immediately turned off until the door is stationary, even though the user is not already in the toilet booth. Therefore, after the previous user leaves the toilet booth, if the later user enters the toilet booth while the door is bouncing, the timer count is taken over. Immediately after sitting on the toilet seat, the room time in the toilet booth exceeds a predetermined time, and an alarm sound is output.

That is, there is a problem that a sensor using the Doppler effect cannot accurately detect when a user enters the toilet booth. And in the sensor using the Doppler effect, when the previous user's exit and the subsequent user's entrance are continuous, the subsequent user's usage time is determined from the time when the previous user entered the toilet booth. There is a problem in that an error occurs that takes over and counts.
On the other hand, in the toilet booth long residence prevention device 1 of the present embodiment, the detection unit 2 includes at least an FMCW radar type sensor 2a.

  The FMCW radar type sensor 2a detects an object to be detected based on the time until the reflected wave returns. For example, when a detected object including an object of a certain size, such as a user's human body, is not present in the toilet booth, the radiated radio wave is normally reflected on the toilet or the floor surface. Return. On the other hand, when the object to be detected is present in the toilet booth, the radiated radio wave is reflected back to the user's human body or the bag brought into the toilet booth by the user. For this reason, there is a time difference in the return time of the reflected wave between when the user is in the room and when the user is not in the room. Therefore, a change in distance can be detected from the time difference. It is possible to detect whether a user is present in the toilet booth. In addition, when the change in the distance is detected, by switching the timer that counts the occupancy time in the toilet booth as the usage time, which is the time that the user is in the toilet booth, to ON or OFF, As will be described later with reference to FIGS. 4 and 5, the movement when the door is opened and closed can be excluded from the detection target.

  That is, in the toilet booth long residence restraint device 1 of the present embodiment, when the user enters or leaves the toilet booth, even if the door is bounced and moved, the user's toilet booth is not affected by the movement of the door. It is possible to detect a change in distance due to leaving the room and switch the timer to OFF, that is, to reset the timer. Therefore, according to the toilet booth long residence prevention device of the present embodiment, it is possible to accurately detect when the user enters the toilet booth. Therefore, even if the previous user's exit and the subsequent user's entrance are consecutive, the error that the subsequent user's usage time is taken over and counted from the time when the previous user entered the toilet booth. Can be prevented from occurring.

  Moreover, in the toilet booth long residence restraint apparatus 1 of this Embodiment, even after a user enters a toilet booth, the frequency of the radio wave transmitted at the moment when the sensor 2a receives the reflected wave and the frequency of the received reflected wave It is possible to easily detect whether the user is present in the toilet booth by measuring the distance between the detected object and the sensor 2a based on the frequency difference that is the difference between it can. Therefore, the usage time during which the user is using the toilet booth can be easily measured.

  In the toilet booth long residence prevention device of the comparative example, the detection unit 2 includes a Doppler radar type sensor but does not include an FMCW radar type sensor. Therefore, when the user is stationary in the toilet booth for a long time, Recognize that no user is in the booth. On the other hand, in the toilet booth long residence prevention device 1 of the present embodiment, since the detection unit 2 includes at least the FMCW radar type sensor 2a, even if the user has been stationary for a long time in the toilet booth, It is possible to prevent the user from recognizing that the user is not in the room.

Moreover, in the toilet booth long residence prevention device of the comparative example, for example, when the user falls down in a cardiopulmonary stop state in the toilet booth, the user who has fallen down cannot be detected. On the other hand, in the toilet booth long residence prevention device 1 according to the present embodiment, even when the user falls down in a cardiopulmonary stop state in the toilet booth, the user who has fallen down can be detected. For example, in a toilet in a late-night station where the frequency of human use is low, it is detected that the user has fallen in cardiopulmonary arrest, an alarm sound is output, and an attention is paid to passersby around the toilet booth. It helps to rescue a fallen user as soon as possible.
In order to prevent erroneous detection caused by reception of vibration from the space side of the ceiling, it is desirable to provide an impact absorber or the like around the detection unit 2.
[Sounding sound output part]

  The arousing sound output unit 3 includes a sound generator capable of outputting a caution sound based on audio information toward the toilet booth B located below the toilet booth long residence prevention device 1. That is, the alert sound output by the alert sound output unit 3 includes an alert sound based on audio information. The alert sound based on the voice information is composed of a human voice or synthesized sound, and is recorded in the alert sound output unit 3 so that it can be output as necessary. If the content of the audio information is something that prompts you to leave the room, for example, “It will be a minute in the rest. Please prepare for the next booth to leave the booth.” Good.

  Since the alert sound output by the alert sound output unit 3 by voice information prompts the user who has occupied the toilet booth B beyond a predetermined time described later, the volume of the alert sound May be any volume that can be heard by the user. However, when it is assumed that there is a waiting person waiting for the toilet booth in the toilet room, the volume of the alert sound is preferably a volume that can be heard by the waiting person. By waiting for the waiting person to hear the sound alert sound, the waiting person will be able to know the next available toilet booth together with the time information, thereby reducing the physiological pain of the waiting person. Can do.

As the caution sound for prompting the user to leave the toilet booth, the caution sound including the voice information is mentioned. However, the caution sound is not limited to the sound including the voice information. Various warning sounds such as an alarm sound may be included. That is, various sound effects can be used as a warning sound in order to prompt the user to leave the toilet booth.
[Control unit]

  The detection unit 2 is connected to the control unit 4. When the detection unit 2 includes the FMCW radar type sensor 2a, the control unit 4 can acquire information as to whether or not a user is present in the toilet booth as a detection signal. The control unit 4 includes a timer 6 that counts (measures) the toilet booth occupancy time based on the detection signal from the detection unit 2, that is, the toilet booth occupancy time.

  Further, the evoked sound output unit 3 is connected to the control unit 4. When the occupancy time in the toilet booth as the usage time measured by the timer 6 exceeds a predetermined time (for example, 10 minutes) as a preset upper limit value, the control sound output unit 3 The alert sound output unit 3 is controlled so as to output an alert sound based on audio information included in the alert sound.

  That is, the control unit 4 controls the output of the alert sound by the alert sound output unit 3 based on the detection signal from the detector 2. Specifically, the control unit 4 detects that the user is seated in the toilet booth from the distance measured by the sensor 2a, determines the time when the user is seated, and determines the determined time and the detection unit. Based on the detection signal of 2, the user measures the usage time of using the toilet booth, and when the measured usage time exceeds a preset upper limit value, the sound output unit 3 alerts The evoked sound output unit 3 is controlled so as to output a sound.

  Further, the control unit 4 detects from the distance measured by the sensor 2a that the luggage is placed in the toilet booth, thereby determining the time when the luggage is placed, and the determined time and the detection unit Based on the detection signal from 2, the time during which the luggage is kept in the toilet booth is measured, and when the measured time exceeds a preset upper limit value, the sound output unit 3 alerts The evoked sound output unit 3 is controlled so as to output a sound. When the measured time exceeds a preset upper limit value, the control unit 4 displays information indicating that the communication unit (not shown) continues to place luggage in an external management room or center. You may make it transmit.

  The control unit 4 determines when the user enters the toilet booth based on the distance measured by the sensor 2a, and the user determines whether the user enters the toilet based on the determined time and the detection signal from the detection unit 2. Arousing sound output unit 3 measures the usage time while using the booth and outputs a caution sound when the measured usage time exceeds a preset upper limit value. May be controlled.

Moreover, the control part 4 detects that the user is crouching in the toilet booth or falls from the distance measured by the sensor 2a, determines the time point detected by this, and the determined time point Based on the detection signal from the detection unit 2 and the time when the user falls down in the toilet booth, the alert sound output unit 3 is careful when the measured time exceeds a preset upper limit value. The sound output unit 3 is controlled so as to output a sound.
<Toilet booth long house deterrence method>

Next, a toilet booth long residence prevention method using the toilet booth long residence prevention device of the present embodiment will be described. Specifically, a control method by the control unit 4 when the detection unit 2 detects the user will be described. FIG. 4 is a graph showing the intensity of the detection signal for each distance measured by the FMCW radar type sensor. FIG. 5 is a graph schematically showing a temporal change in distance measured by an FMCW radar type sensor. FIG. 6 is a graph schematically showing a temporal change in the level of the Doppler effect detected by a Doppler radar type sensor. The vertical axis in FIG. 4 indicates the intensity of the detection signal, and the horizontal axis in FIG. 4 indicates the distance from the sensor to the detected object. The vertical axis in FIG. 5 indicates the measured distance, and the horizontal axis in FIG. 5 indicates time. The vertical axis in FIG. 6 indicates the level of the detected Doppler effect, and the horizontal axis in FIG. 6 indicates time.
[Record initial data]

  In the toilet booth long residence prevention method according to the present embodiment, first, the control unit 4 uses the FMCW radar sensor 2a to detect the detected object and the sensor in a state where no user is present in the toilet booth. The distance DS1 between 2a is measured.

Specifically, since the interior size or the shape of the toilet bowl and the like is different for each toilet booth, after the toilet booth long residence deterring device 1 is installed, the toilet booth long residence deterring device 1 starts detecting the user's occupancy. Before, the control unit 4 sets the distance DS2 as the distance DS1 between the detected object and the sensor 2a by the FMCW radar type sensor 2a in a state where no user is present in the toilet booth. Measure and record the measured distance DS2 as initial data.
[Proper entry and exit]

  After the initial data is recorded in this way, the control unit 4 allows the user to stay in the toilet booth when the user enters the toilet booth B and when the user leaves the toilet booth B. It is detected by the detection unit 2 whether or not it is. Below, the case where the user enters and leaves the room properly will be described. Here, proper entry and exit means the case where the previous user's exit and the subsequent user's entrance are not continuous, and in the following, proper entry and exit by the previous user and subsequent use. An explanation will be given of the case where the person enters the room properly. Hereinafter, an example in which the control unit 4 measures the distance DS3 as the distance DS1 between the detected object and the sensor 2a by the sensor 2a will be described.

  As shown in FIG. 5, for example, as initial data, the distance DS2 between the detected object and the sensor 2a is recorded as 2.0 m, for example, (when “vacant” in FIG. 5). Consider the case where the user opens the door F and enters the toilet booth B. In such a case, when the user stands in the toilet booth while standing, the microwave radiated from the sensor 2a is reflected on the entire human body, and there is a time difference in the return time. The sensor 2a measures the distance DS3 as the distance DS1 between the object to be detected and the sensor 2a by, for example, 0.8 m by the microwave reflected on the user's head and shoulders (see “ "When entering the room, sitting down"). As a result, the control unit 4 determines that the distance DS3 as the distance DS1 is greatly decreased from the distance DS2 and changes, that is, determines that the user is present in the toilet booth, and the timer 6 is turned on. It becomes. At this time, the time when the user enters the toilet booth is determined as the time when the measured distance DS3 becomes shorter than the distance DS2.

  Preferably, the control unit 4 determines that the user is present in the toilet booth when the distance DS3 as the distance DS1 is shorter than the distance DS2 by a difference that exceeds a preset upper limit value. By appropriately setting such an upper limit value, it is possible to reliably detect the presence of the user while preventing erroneous detection.

  Next, consider a case where the user who has entered the room performs an operation of lowering his pants, skirt or underwear and sitting on the toilet seat D of the Western-style toilet. In such a case, the sensor 2a measures that the distance DS3 as the distance DS1 between the detected object and the sensor 2a is shorter than the distance DS2 and longer than 0.8 m, for example, 1.0 m. ("At the time of the sitting posture maintaining operation" in FIG. 5). Information on the distance DS3 as the distance DS1 measured by the sensor 2a is sent to the control unit 4.

  Next, consider a case where the user who has entered the room sits on the toilet seat D to perform a toilet or operates the portable terminal device while sitting on the toilet seat D. Also in such a case, the sensor 2a has a distance DS3 as the distance DS1 between the object to be detected and the sensor 2a shorter than the distance DS2 and longer than 0.8 m, for example, 1.0 m. Measurement is performed (“at the time of the sitting posture maintaining operation” in FIG. 5). Information on the distance DS3 as the distance DS1 measured by the sensor 2a is sent to the control unit 4.

  In this way, when the distance DS3 as the distance DS1 measured by the sensor 2a is changed so as to be greatly decreased from the distance DS2 that is the initial data, the information is sent from the detection unit 2 to the control unit 4 as information. Based on the change in the distance DS3 as the measured distance DS1, the control unit 4 performs a seating posture maintenance operation in which the user is present in the toilet booth and sits on the toilet seat from the user's entrance stool operation. It is determined that it has been broken. When this determination is made, the control unit 4 causes the timer 6 to start counting the occupancy time in the toilet booth as described above.

  That is, the control unit 4 measures the distance DS2 as the distance DS1 by the sensor 2a in a state where no user is present in the toilet booth, and after measuring the distance DS2, the sensor 2a sets the distance DS1 as the distance DS1. The distance DS3 is measured, and the time when the user enters the toilet booth is determined as the time when the measured distance DS3 becomes shorter than the distance DS2. In other words, the control unit 4 determines when the user enters the toilet booth based on the distance DS1 measured by the sensor 2a. And the control part 4 is controlled so that the use time when the user is using the toilet booth is measured based on the determined time and the detection signal by the sensor 2a. Moreover, the control part 4 compares the toilet booth occupancy time counted with the predetermined time (for example, 10 minutes) as a preset upper limit. When the measured usage time exceeds a preset upper limit value, the control unit 4 controls the arousing sound output unit 3 so that the arousing sound output unit 3 outputs a warning sound.

  Here, if the user completes the toilet and enters a preparatory operation for leaving the toilet booth B within a predetermined time as a preset upper limit value, is the waist lifted from the toilet seat? Or in order to arrange clothes, the sensor 2a measures that the distance DS3 as the distance DS1 between the object to be detected and the sensor 2a is, for example, 0.8 m (“at the time of leaving the room” in FIG. 5). Then, after the user leaves the toilet booth B, the microwave radiated from the sensor 2a is not reflected on the human body, and the sensor 2a has a distance DS3 as a distance DS1 between the detected object and the sensor 2a. Is detected as, for example, 2, 0 m ("vacant time" in FIG. 5). As a result, the control unit 4 determines that the distance DS3 has approached the distance DS2 as the initial data, that is, a change has occurred, that is, the exit operation is performed, and determines that the user is not present in the toilet booth.

As described above, when the control unit 4 measures the usage time based on the time when the determined user enters the toilet booth and the detection signal from the sensor 2a, the detection unit 2 does not use the Doppler radar type sensor together. Therefore, the configuration of the detection unit 2 can be simplified, and the manufacturing cost of the toilet booth long residence prevention device can be reduced.
[Reset count]

As described above, when the control unit 4 determines that a room leaving operation is performed within a predetermined time as a preset upper limit value and no user is present in the toilet booth, the timer 6 is turned off. Become. That is, the control unit 4 causes the timer 6 to reset the count of the occupancy time in the toilet booth (to make the occupancy time in the toilet booth zero), and returns the timer 6 to the count activation standby state. In this case, since the user has left the room within a predetermined time, the sound output unit 3 does not operate.
[Entry after leaving the room]

After the previous user leaves the toilet booth B, when the subsequent user enters the toilet booth B, the control unit 4 is based on the change in the measured distance DS1 as in the case of the previous user. Then, it is determined that a later user is present in the toilet booth, and a sitting posture maintaining operation for sitting on the toilet seat is performed from the subsequent user's entering seat sitting operation. As described above, when the previous user leaves the room, the timer 6 is returned to the count activation standby state. Therefore, if the control unit 4 determines that the seating posture maintaining operation for sitting on the toilet seat is performed from the user's subsequent seating operation, the timer 6 is started as described above, and the count in the toilet booth occupancy time is counted. Be started.
[Continuous exit and entry]
Next, a case where the previous user's exit and the subsequent user's entrance are continuous will be described.

  As described above, a case where the detection unit 2 includes a Doppler radar type sensor but does not include an FMCW radar type sensor as a toilet booth long residence suppression device of a comparative example. In such a comparative example, depending on the strength with which the user pulls and opens the door, the door of the toilet booth may bounce about 4 to 6 times against the stopper and then stop. In this case, the timer for counting the occupancy time in the toilet booth is not immediately turned off until the door is stationary, even though the user is not already in the toilet booth.

  That is, in the comparative example, after the previous user leaves the toilet booth, when the subsequent user continuously enters the toilet booth, the level of the Doppler effect based on the previous user's leaving operation is high. And a state in which the level of the Doppler effect based on the subsequent user's entering / sitting operation is high is detected by the sensor continuously in time, and the detected detection signal may be sent from the detection unit 2 to the control unit 4 There is. In such a case, when the previous user leaves the toilet booth, the timer is not turned off, the timer 6 count is not reset, and the timer 6 may not be returned to the count activation standby state. . For example, FIG. 6 shows that the state in which the level of the Doppler effect based on the previous user's exit operation is high and the state in which the level of the Doppler effect based on the subsequent user's entrance into the room is high are temporally continuous. In the region RG1 surrounded by the two-dot chain line, this corresponds to a case where regions with large amplitudes on both the left and right sides overlap.

  Thus, in the comparative example, when the previous user leaves the toilet booth and the subsequent user continuously enters the toilet booth, the time when the user enters the toilet booth cannot be accurately detected. There is a problem. In the comparative example, when the previous user's exit and the subsequent user's entry are consecutive, the subsequent user's usage time is counted from the time when the previous user entered the toilet booth. There is a problem that an error occurs.

  On the other hand, in the toilet booth long residence prevention apparatus 1 of the present embodiment, for example, only data on the distance (for example, 0.8 m) between the ceiling surface (the position of the sensor) and the upper part of the door (the surface corresponding to the thickness) is detected. Set it as outside. As a result, even if the door bounces and moves, the movement of the door can be prevented from being detected, and the movement of the door that could not be excluded by the Doppler effect so far can be excluded from the detection target. . Therefore, it can be clearly determined whether or not the user is present in the toilet booth, and the timer can be switched ON or OFF so as to follow the actual user entering or leaving the room. it can.

  That is, according to the toilet booth long-stay prevention method by the toilet booth long-stay prevention apparatus of the present embodiment, the FMCW radar type sensor 2a is made to detect whether a user is present in the toilet booth. As a result, when the user leaves the toilet booth, even if the door bounces and moves, the change in the distance due to the user leaving the toilet booth is detected without being affected by the movement of the door. 6 can be switched off, that is, the timer 6 can be reset. Therefore, according to the toilet booth long residence prevention method by the toilet booth long residence restraint device of the present embodiment, it is possible to accurately detect when the user enters the toilet booth. Therefore, even if the previous user's exit and the subsequent user's entrance are consecutive, the error that the subsequent user's usage time is taken over and counted from the time when the previous user entered the toilet booth. Can be prevented from occurring.

As shown in FIG. 4, the intensity of the detection signal for each distance from the sensor to the detected object is input to the control unit 4 at predetermined intervals. Thereby, when the detected distance is the first distance (1 m to 4 m), the control unit 4 detects that the user is seated in the toilet booth. In addition, when the detected distance is the second distance (1.5 m to 4.5 m) longer than the first distance, it is detected that the user is crowded in the toilet booth. Further, when the detected distance is the third distance (1.5 m to 5 m), it is detected that luggage is placed in the toilet booth.
<Case and mounting surface>
Next, the housing and the mounting surface will be described with reference to FIGS. 1 to 3.
[Case]

  FIG. 2 schematically shows a state in which the detection unit 2, the sound output unit 3, and the control unit 4 are accommodated in the housing 5. As shown in FIG. 2, the lower surface (the lower surface of the housing) of the housing 5 is a mounting surface 7 that is in close contact with the back surface of the ceiling material C. That is, the housing | casing 5 has the attachment surface 7 superimposed on the ceiling back surface of the ceiling material C of a toilet booth.

  A microwave passing surface 8 is provided on the mounting surface 7. A through hole 9 may be provided. The microwave passage surface 8 and the plurality of through holes 9 are covered with the ceiling material C when the mounting surface 7 of the housing 5 is superimposed on the ceiling back surface of the ceiling material C.

The microwave passage surface 8 is a part of the casing bottom plate, and is a passage portion through which a radio wave transmitted by the sensor 2a and a reflected wave in which the radio wave transmitted by the sensor 2a is reflected by an object to be detected pass. is there. A sound generator (for example, a speaker) included in the evoked sound output unit 3 is disposed on the upper surface of the casing lower surface plate in which the through holes 9 are arranged, and the sound information output by the evoked sound output unit 3 includes these sound information While passing through the through-hole 9 and further passing through the ceiling material C, it can be heard by a person in the toilet booth B below. That is, the plurality of through-holes 9 are arranged so as to be adjacent to each other, and are through-holes through which the alert sound passes.
[About the point where the sound output part is incorporated and the point where the through hole is covered with the ceiling material]

  The reason why the sound output unit 3 is incorporated in the housing 5 together with the detection unit 2 and the control unit 4 is as follows. First, if the audible sound output unit 3 is installed in a position that can be seen by the occupants such as the inner wall surface in the toilet booth alone, the user who has the audible sound output unit 3 in the toilet booth. Therefore, it is easy to harm the user's mood. And it is also anticipated that the sound output unit 3 will be tampered with or broken by the user.

  In order to prevent the arousal sound output unit 3 from being tampered with or broken, it is possible to list the concealment sound output unit 3 behind the ceiling above the toilet booth B as a countermeasure. However, if the sound output unit 3 is arranged so as to be hidden behind the ceiling alone, the alert sound output from the sound output unit 3 will be trapped in the ceiling and will reach the toilet booth below through the ceiling material. The sound quality of the arousing sound will deteriorate.

  If the sound quality of the alert sound is deteriorated as described above, the content of the alert sound is not transmitted to the user in the toilet booth. For example, as voice information, if an announcement is made in a foreign language such as English or Chinese to prompt the user to leave the room, the announcement content is not clear, is it announced in Japanese, or There is also a possibility that it may not be possible to identify whether the announcement is made in a foreign language.

  In order to reliably convey the content of the alert sound, it is conceivable to increase the volume of the alert sound. However, when the volume of the alert sound is increased, the ceiling surface of the toilet room vibrates over a wide range, and it becomes unclear to which toilet booth the alert sound is output. Therefore, the user who is present in the toilet booth that is the target of the alert sound is prompted to leave the room, or the user is present in the adjacent toilet booth. It is not possible to identify whether the person is prompted to leave the room. In addition, a user who is not in the alert sound and is present in an adjacent toilet booth cannot identify who is prompted to leave. Therefore, there is a problem that a user who is present in any toilet booth is easily misunderstood.

  Furthermore, it is difficult for a waiting person who is waiting for an empty toilet booth outside the toilet booth to identify which toilet booth the user is prompted to leave. Therefore, there is a problem that it cannot be expected that the toilet booth will be vacant soon, because it sounds just as if it is urged to leave the room.

  On the other hand, in the toilet booth long residence prevention device 1 of the present embodiment, as described above, the arousing sound output unit 3 is incorporated in the housing 5 together with the detection unit 2 and the control unit 4. Therefore, by installing the toilet booth long residence deterrent device 1 on the back side of the ceiling of the ceiling material C, the arousing sound output unit 3 can be easily installed without performing the work of installing the arousing sound output unit 3 alone on the back of the ceiling. Can be hidden behind the ceiling. In addition, since the microwave passage surface 8 and the through hole 9 are covered with the ceiling material C in contact with the ceiling material C, the toilet booth long-life prevention device 1 and the ceiling material C A small animal or the like does not enter between the doors, and dust or small foreign objects on the back of the ceiling can be prevented from entering the toilet booth long-stay prevention device 1.

  The alert sound output unit 3 outputs a caution alert sound by voice information with directivity directed downward, and is emitted into the toilet booth B through the through hole 9. At this time, since the toilet booth long residence prevention device 1 is installed on the back side of the ceiling of the ceiling material C and the through hole 9 is covered with the ceiling material C in contact with the ceiling material C, the alert sound by voice information is generated in the space behind the ceiling. Instead of being lofty, it passes through the ceiling material C directly from the through hole 9 and properly reaches the space in the toilet booth B located below the installation place of the toilet booth long-living deterrence device 1. Therefore, the alert sound by the voice information is clearly transmitted to the user who is present in the toilet booth B.

  Therefore, even if the sound information of the alert sound is in the form of an announcement in a foreign language such as English or Chinese, the user residing in the toilet booth that is the target of the alert sound will The user who is present in the adjacent toilet booth can easily identify who is prompted to leave the room. The same applies even if the alert sound output from the alert sound output unit 3 is an alarm sound or a sound effect.

In addition, because the alert sound by voice information is clear, for the waiter waiting for the toilet booth, which toilet booth is urged to leave the room? Can be easily identified. Therefore, it is possible to give the waiting person a sense of security that the toilet booth can be used soon.
[Fixed part]

  Around the mounting surface 7, a fixing portion 9 for stably fixing the housing 5 to the ceiling back surface of the ceiling material C is provided. The fixing portion 9 is a member in which a plurality of eaves members are arranged so as to be movable in the circumferential direction of the mounting surface 7, and the eaves members are inserted into the ceiling back surface of the ceiling material C to surround the housing 5 at a predetermined angle. The casing 5 is fixed to the ceiling material C by rotating in the direction.

  In addition, the structure of the fixing | fixed part 9 is not specifically limited. For example, a sharply raised metal plate having a plurality of locking blades may be used as the fixing portion 9, and the casing 5 disposed around the mounting surface 7 or the like is placed on the back of the ceiling of the ceiling material C to slightly surround it. The fixing portion 9 may be fixed in a state where the locking blade bites into the ceiling material C, for example, by rotating in the direction. Furthermore, the fixing portion 9 may be an adhesive tape, and the adhesive tape may be disposed on the mounting surface 7 of the housing 5 and the ceiling material C may be fixed with the adhesive tape.

  As described above, in the toilet booth long residence prevention device 1 of the present embodiment, since the fixing portion 9 is provided on the mounting surface 7 of the housing 5, the toilet booth long residence prevention device 1 can be stably fixed, and It can be easily (one-touch) installed on the ceiling back surface of the ceiling material C. And the fixing | fixed part 9 maintains the state which the microwave passage surface 8 and the through-hole 9 closely contact | connect the ceiling back surface of the ceiling material C while preventing the toilet booth long residence prevention apparatus 1 from shifting | deviating by an earthquake etc. To do.

  When installing the toilet booth long residence prevention device 1 of the present embodiment on the ceiling back surface of the ceiling material C, for example, from the lighting device mounting hole opened by removing the lighting device arranged on the ceiling material C above the toilet booth B The toilet booth long-living deterrent device 1 can be inserted from the side surface and placed on the ceiling back surface of the ceiling material C. And the power line (not shown) in the toilet booth long-living deterrent device 1 of the present embodiment can be connected to the electrical wiring behind the ceiling that supplies power to the luminaire, and the luminaire can be attached again as it was. Here, as for the side parts 5a and 5b of the toilet booth long residence prevention apparatus 1, both width and height are 1 cm or more and less than 9 cm. The diameter of the lighting fixture mounting hole to which the LED or the like is attached is 9 cm, and the side portions 5a and 5b of the toilet booth long residence prevention device 1 have a width and height of 9 cm or less, so that It can be placed on the ceiling back surface of the ceiling material C by inserting from the side surface through the illumination fixture mounting hole.

  Thus, since the detection part 2, the arousal output part 3, and the control part 4 are put together in the toilet booth long residence prevention apparatus 1 of this Embodiment, the toilet booth long residence prevention apparatus 1 is made of the ceiling material C. By installing it on the back of the ceiling, it is possible to easily construct a mechanism that prompts the user in the toilet booth to leave the room when necessary.

  The toilet booth long residence prevention device 1 of the present embodiment is arranged so that the toilet booth long residence prevention device 1 is located above each toilet booth on the back surface of the ceiling of the ceiling material C. In order to perform various settings by wireless communication, an interface unit (not shown) is provided. Thereby, after installing the toilet booth long-stay prevention device 1 on the back of the ceiling, each setting of the plurality of toilet booth long-stay prevention devices 1 can be performed using the dedicated device via the interface without entering the back of the ceiling ( Time setting until the sound output unit 3 operates, and setting of the type or volume of the alert sound output by the sound output unit 3) can be easily performed. Moreover, the various information for each operation | movement confirmation of the some toilet booth long residence prevention apparatus 1 can be acquired with an exclusive apparatus.

In addition, since radio waves are transmitted from each of the plurality of toilet booth long residence prevention devices 1 and the object to be detected is detected using the transmitted radio waves and their reflected waves, radio wave interference does not occur between adjacent devices. Changing the channel is necessary to eliminate false detections. Therefore, the dedicated device may be configured to change the channel to prevent interference.
<Display device>

  The toilet booth long residence restraint device 1 of the present embodiment is an output device (not shown) that can send the operation information of each toilet booth long residence restraint device 1 to a display device provided in the toilet room A by wireless communication. ). As shown in FIG. 1, the display device 10 is installed on the wall surface near the toilet booth row in the toilet room A, and an output device (not shown) is used for each toilet booth toward the display device 10. Send information such as status. The display device 10 is attached to a place where people waiting for a vacant toilet booth, for example, line up.

  The display device 10 includes a display body such as a liquid crystal display panel, a known human body proximity detection sensor, and the like, and when people waiting for a toilet booth are lined up, the human body proximity sensor detects the lined person, Perform display operation.

  Furthermore, the display device 10 serves to notify the person who waits for the availability of the toilet booth based on the information output from the toilet booth long residence prevention device 1. When the display operation is being performed, it can be displayed together that the awakening sound output unit 3 may be prompted to leave the room by outputting a warning sound.

  In addition, the toilet booth long residence prevention device 1 according to the present embodiment transmits information such as a detection signal by the detection unit 2 or is assembled to receive instruction information to the control unit 4. You may have a wired type transceiver. In such a case, for example, information such as the usage status of each toilet booth can be sent to a building management department or the like to be collectively managed. Moreover, since the toilet booth long residence prevention apparatus 1 of this Embodiment is equipped with the detection part 2, the alert sound output part 3, and the control part 4, it is remote from the management department in the place away from the toilet room. It is possible to easily build a system that monitors the usage of each toilet booth and prevents crime.

  In addition, the management department sends instruction information to each of the plurality of toilet booth long-stay prevention devices, sets the time until the audible sound output unit 3 operates, and the alert that the audible sound output unit 3 outputs It is possible to easily construct a system in which the sound type or volume can be set by remote control.

  As mentioned above, the invention made by the present inventor has been specifically described based on the embodiment. However, the present invention is not limited to the embodiment, and various modifications can be made without departing from the scope of the invention. Needless to say.

  Further, the above-described embodiment has been described in detail for easy understanding of the present invention, and is not necessarily limited to one having all the configurations described. For example, part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. . Moreover, you may add, delete, and replace another structure about a part of structure of each embodiment.

  DESCRIPTION OF SYMBOLS 1 ... Toilet booth long residence suppression apparatus, 2 ... Detection part, 2a ... Sensor, 3 ... Arousing sound output part, 4 ... Control part, 5 ... Case, 6 ... Timer, 7 ... Mounting surface, 8 ... Microwave passage surface, DESCRIPTION OF SYMBOLS 9 ... Fixed part, 10 ... Display apparatus, A ... Toilet room, B ... Toilet booth, C ... Ceiling material, D ... Toilet seat, E ... Human body, F ... Door, RG1 ... Area.

Claims (7)

In the toilet booth long-living deterrent device that deters the long stay of users who use the toilet booth,
A housing provided behind the ceiling of the toilet booth;
A detection unit that is provided in the housing and detects a room in the toilet booth of the user;
A rousing sound output unit provided in the housing and capable of outputting a first caution sound toward the toilet booth;
A control unit that is provided in the housing and controls the output of the first alert sound by the alert sound output unit based on a detection signal by the detection unit;
Have
The detection unit transmits a first radio wave toward the toilet booth, and receives the reflected wave reflected by an object to be detected. The first frequency of the first radio wave and the reflected wave at the moment of reception. Including a first sensor of a frequency-modulated continuous wave radar system that measures a distance to the detected object based on a frequency difference that is a difference from the second frequency of
The controller determines when the user enters the toilet booth based on the distance measured by the first sensor, and based on the determined time and the detection signal, the user. Measures the usage time of using the toilet booth, and when the measured usage time exceeds a preset upper limit value, the audible sound output unit outputs the first caution sound To control the sound output unit,
The control unit, when the distance is a distance from the ceiling surface to the upper part of the door, the door that opens and closes toward the toilet booth is excluded from the detection target at the time point,
Toilet booth long-stay prevention device. In the toilet booth long residence prevention device according to claim 1,
The control unit measures the distance between the detected object and the sensor as initial data by the first sensor in a state where no user is present in the toilet booth, and measures the initial data. Then, when the user opens the door and enters the toilet booth, the distance between the user and the sensor, which is a non-detected object, is measured,
When the distance is smaller than the initial data, it is determined that a user is present in the toilet booth,
Thereafter, the user who entered the room performs an operation of sitting on the toilet seat, and when the distance increases, it is determined that the sitting posture maintaining operation of sitting on the toilet seat is performed from the user's entering room sitting operation, and the user Start measuring usage time using the toilet booth,
Toilet booth long-stay prevention device. In the toilet booth long residence deterring device according to claim 1 or 2,
The said control part is a toilet booth long residence suppression apparatus which measures the said usage time based on the said determined time and the said detection signal by the said 1st sensor. In the toilet booth long residence restraint device according to any one of claims 1 to 3,
The toilet booth long residence deterring device, wherein the first alert sound includes a second alert sound by voice information. In the toilet booth long residence prevention device according to any one of claims 1 to 4,
The toilet booth long-lived deterring device, wherein the casing has an attachment surface superimposed on a ceiling back surface of the ceiling material of the toilet booth. In the toilet booth long residence deterring device according to claim 5,
The mounting surface is provided with a passing portion through which the first radio wave and the reflected wave can pass, and a through hole through which the first alert sound passes,
The toilet booth long-living deterring device, wherein the passage portion and the through hole are covered with the ceiling material when the mounting surface is superimposed on the ceiling back surface of the ceiling material. In the toilet booth long residence deterring device according to claim 5 or 6,
A toilet booth long-living deterrent device, wherein the mounting surface is provided with a fixing portion for fixing the casing to the back surface of the ceiling.