JP4411973B2 - Human body detection device - Google Patents

Description

  The present invention relates to a human body detection device, and more particularly to a human body detection device suitable for application to an automatic opening / closing device for a toilet lid provided in a toilet. Specifically, the present invention relates to a human body detection device having a function of adjusting a detection distance (maximum value of a distance from the human body detection device to a detectable human body).

  FIG. 2 is a perspective view showing an example of a Western-style toilet equipped with an automatic opening / closing device for a toilet lid. A toilet seat box 12 is installed in the Western-style toilet 10, and a toilet seat 14 and a toilet lid 16 are attached to the toilet seat box 12 so as to be rotatable in the vertical direction. Reference numeral 18 denotes a low tank.

  The toilet seat box 12 is provided with an overhanging portion 20 that protrudes to the side, and an operation switch such as a warm water washing device for washing the human body with warm water is provided on the overhanging portion 20.

  The toilet seat box 12 is provided with a driving device such as a motor for moving the toilet lid 16 up and down, and the overhanging portion 20 is provided with a human body detection sensor 22 for operating the driving device. .

  As this human body detection sensor, an infrared sensor such as a PSD (position sensitive detector) is used. In the PSD, a light emitting element is caused to emit light, and reflected light from a human body is condensed on the PSD element, and a distance from the sensor to the human body is obtained based on a condensing position on the PSD element.

  As shown in FIGS. 3 and 4, the infrared rays of the human body detection sensor 22 are radiated obliquely upward in front of the western style toilet 10 and toward the center of the western style toilet 10.

  In a normal case, the sensor 22 outputs a human body detection signal when the human body enters a detection area between the distance Lmin to the vicinity of the front end of the western-style toilet 10 and the distance Lmax to about 300 mm ahead. Upon receiving this signal input, the control circuit drives the toilet lid driving device, and the toilet lid 16 is turned upright. When a human body is no longer detected in the detection area, the toilet lid 16 automatically rotates and closes after a predetermined time (for example, 1 minute) has elapsed.

  In addition, a seating sensor that detects a human body seated on the toilet seat 14 may be provided, and the toilet lid 16 may be automatically closed after a predetermined time after the seating is not detected.

  When the toilet room is small, a wall or door may be located at a position about 300 mm in front of the Western-style toilet. In such a case, the conventional Western style toilet with automatic toilet lid opening / closing device cannot be installed (because a wall or a door is always detected).

  Also, if the toilet room is large, you may want to open the toilet lid as soon as a person enters the toilet room. However, with a conventional human body detection device, the human body does not approach a Western-style toilet up to about 300 mm. There is an inconvenience that the toilet lid does not open.

  The present applicant has proposed a human body detection device in Japanese Patent Laid-Open No. 2001-194465 that can eliminate such inconvenience and can set the boundary of the human body detection area.

  The human body detection device of the same number is a human body detection device that detects the human body in the detection area, and gradually changes the boundary of the detection area, and based on the boundary when the object is detected or not detected for the first time, The present invention is characterized in that boundary setting means for setting the boundary is provided.

Specifically, by operating the detection area adjustment switch provided in the toilet seat box (not shown) first sets an upper limit of the detection area (the detection distance) to a value L ₀ thoroughly. This L ₀ is set to 1000 mm, for example, or set to the detection upper limit distance of the human body detection sensor.

Then, it is determined whether or not an object (for example, a wall or door of a toilet room. In the case of a door, the door is closed) exists in this detection area. Since the L ₀ is a sufficiently large value, usually Kabemata the door is detected. Therefore, the next detection distance is set to a short distance by 10 mm, and it is determined again whether a wall or a door is detected. This process is repeated until no walls or doors are detected. A value obtained by subtracting 50 mm from the detection distance when the wall or door is no longer detected for the first time is set as the detection distance.

Thereby, even when the toilet room is narrow and the wall and door are close to the front of the western style toilet, it is possible to install the western style toilet with an automatic toilet lid opening / closing device in the toilet room. Even if the toilet room is large, the toilet lid opens as soon as it enters the toilet room.
JP 2001-194465 A

  In JP-A-2001-194465, in order to adjust the detection distance, it is necessary to operate the adjustment switch, and there is a possibility that the detection distance adjustment operation cannot be performed unless a specialized construction contractor is used. In addition, even if the detection distance is once adjusted, a shelf or figurine will be placed on the detection area and a toilet lid will be opened by installing a shelf or installing a figurine in front of the toilet in the toilet room. There is also a fear.

  An object of this invention is to provide the human body detection apparatus by which a detection distance is adjusted automatically.

Human body detection device 請 Motomeko 1 is a human body sensing device for opening the toilet lid in accordance with the human body detection by the human body detecting sensor, after the toilet lid is open, it is seated in the seat within the required time In the human body detection device having an automatic closing means for closing the toilet lid when not being operated and having a function of adjusting the detection distance, the human body detection sensor is located behind the tank cover when the toilet lid stands up are installed, after toilet lid is automatically closed, and automatic opening the toilet lid is in a predetermined time, then, adjusting the detection distance phenomenon of automatic toilet lid again closed to reduce the detection distance in the case of repeating a predetermined number of times or more Means are provided .

In the human body sensing device 請 Motomeko 1, when the phenomenon of the toilet lid is automatically opened and closed more than a predetermined number occurs, it is determined that the detection distance is too long, is adjusted to shorten the sensing distance is performed. Thereby, the detection distance is adjusted .

Na us, the human body detection device according to claim 1, detection state may be adjusted is performed so as to shorten the the detection distance for predetermined time or longer by a predetermined distance. In this case, the process of shortening the detection distance by a predetermined distance after a predetermined time is repeated as necessary, so that the detection distance is automatically shortened until no wall or door is detected.

Further, in the human body detection device according to claim 1 , when the detection state continues for a predetermined time or longer, the detection distance may be adjusted to be shortened until the detection distance is not detected. In this case, adjustment of the detection distance is automatically completed once, and the time required for adjustment of the detection distance is shortened.

  Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 is a perspective view of a toilet room provided with toilet equipment with a human body detection device according to an embodiment.

  A tank cover 3 is installed on the rear upper surface of the western-style toilet 2 installed in the toilet room 1, and a toilet seat 4 and a toilet lid 5 are pivoted in a vertical direction on a front projection 3A of the tank cover 3. It is attached as possible.

  The tank cover 3 is provided with a light receiving unit 7 that receives a signal from the remote controller 10.

  A human body detection sensor 9 that detects a human body that has entered the toilet room 1 is provided on the upper portion of the tank cover 3. It should be noted that the human body detection sensor 9 is installed at a position that is shaded when the toilet lid 5 stands.

  Although illustration is omitted, the toilet seat 4 is provided with a seating sensor (a capacitance sensor, a pressure sensor, etc.). The tank cover 3 has a hot water cleaning device equipped with a cleaning nozzle, a hot air drying device, a deodorizing device, a toilet seat / toilet lid rotation device, and these hot water cleaning devices, a hot air drying device, a toilet seat / toilet lid. A circuit board (not shown) on which a control circuit for controlling the rotation device and the like is mounted is installed.

  A remote controller 10 is attached to the wall surface of the toilet room 1. The remote controller 10 includes a shower switch and bidet switch for operating the hot water cleaning device, a drying switch for operating the hot air drying device, a toilet lid automatic opening / closing stop switch, a stop switch for stopping the operation of the hot water cleaning device or the hot air drying device. In addition to the cleaning strength adjustment switch for adjusting the cleaning strength of the hot water cleaning device, a toilet seat opening / closing switch, a large flush switch for flushing the toilet bowl, a small flush switch, and the like are provided. The remote controller 10 is provided with a signal light transmission circuit that transmits infrared signal light toward the light receiving unit 7.

  When the toilet user enters the toilet room 1 in a state in which the toilet lid automatic opening / closing function is activated, the toilet lid 5 is detected by the human body detection sensor 9.

  In this embodiment, when the toilet lid 5 is opened, the human body detection sensor 9 is behind the toilet lid 5, so that the detection by the human body detection sensor 9 is interrupted after the toilet lid 5 stands up, and a timer is used instead. Start. If the user does not sit within a predetermined time (for example, 30 to 100 seconds, specifically 60 seconds), the person is assumed to have left the toilet room, lies down on the toilet lid 5, and is again detected by the human body detection sensor 9. Resume human body detection.

  A circuit for adjusting the detection distance of the human body detection sensor 9 is mounted on the circuit board.

  Next, various aspects of the detection distance adjustment circuit will be described.

In the first aspect, the toilet lid 5 stands up based on the detection signal of the human body detection sensor 9, the 60 second timer starts, and then the toilet lid 5 automatically closes with the time up of 60 seconds, and then immediately. The automatic opening / closing of the toilet lid 5 standing up again based on the detection signal of the human body detection sensor 9 again (for example, within 1 to 5 seconds, specifically within 3 seconds) is a predetermined number of times (for example, 3 to 10 Specifically, if it is repeated continuously 5 times or more), it is assumed that the human body detection sensor 9 is detecting a wall or a door, not a human body, and the detection distance is shortened by a predetermined distance (for example, 30 mm). By repeating this, the detection distance of the human body detection sensor 9 is shortened to as long a value as possible within a range where walls, doors, and the like are not detected .

Na us, in the embodiment above SL has a configuration to minimize a predetermined distance detection distance when it continues the predetermined time or more detection state, non-detection state detection distance when the predetermined time or more detection state continues for It is good also as a structure made small until it becomes. In this case, for example, when the detection state continues for a predetermined time or more, the detection distance is set to a short distance by 10 mm, and it is determined whether or not a wall or a door is detected again. This process is repeated until no walls or doors are detected. Then, a value obtained by subtracting 50 mm from the detection distance when the wall or door is not detected for the first time is set as the detection distance. In this way, the adjustment of the detection distance is automatically completed once, and the time required for adjusting the detection distance is shortened.

Above SL aspect, although the detection distance adjustment operation of the human body detection sensor is performed automatically, in addition, be configured as the above adjustment operation is executed when the sensing distance adjustment start signal is given Also good. In order to give this start signal, a special switch may be provided, or a configuration may be adopted in which a start signal is given by simultaneously pressing a plurality of switches on the remote control or toilet seat box side.

  It should be noted that it is preferable to automatically return to the normal mode when the detection distance adjustment is completed.

  In each of the above embodiments, the detection distance is switched by 30 mm. However, the switching width of 30 mm is an example, and the present invention is not limited to this. The switching width is preferably about 10 to 50 mm. Further, this switching width may be adjusted by a switch operation.

  For example, after the detection distance is adjusted with a relatively large switching width such as 50 mm and no walls or doors are detected, the detection is lengthened with a relatively small switching width (for example, 5 to 20 mm). The detection distance may be extended to the stage immediately before the door is detected.

  In this invention, you may provide the display means which shows that the detection distance is being adjusted. The display means may be sound means, but is preferably one that lights or blinks a display lamp provided on the toilet seat box or the low tank cover.

  In the present invention, in addition to the function of automatically adjusting the detection distance, a function of manually adjusting the detection distance may be provided. In this case, for example, a manual adjustment switch may be provided on the remote controller so that direct manual adjustment can be performed by operating the manual adjustment switch. Also, without providing a manual adjustment switch, when a plurality of switches (for example, 3) provided on the remote controller are simultaneously pressed for a certain time in a specific combination for a certain period of time, the manual adjustment mode is set, and then a predetermined switch such as a cleaning strength adjustment switch is set. The detection distance may be manually adjusted by operating. Also in this case, as described above, display means for indicating the manual adjustment mode may be provided.

  Each of the above embodiments is an example of the present invention, and the present invention may take other forms. For example, the human body detection device of the present invention may be applied to a boy's urinal, an automatic faucet in a toilet, etc. in addition to a Western-style toilet.

It is a perspective view which shows the toilet facility with a human body detection apparatus which concerns on embodiment. It is a perspective view of a western style toilet bowl with a toilet lid automatic opening and closing device. It is a side view of a Western style toilet bowl with a toilet lid automatic opening and closing device. It is a top view of a Western style toilet bowl with a toilet lid automatic opening and closing device.

2,10 Western-style toilet 3 Tank cover 4,11 Toilet seat 5,16 Toilet lid 7 Light receiving unit 9,22 Human body detection sensor

Claims (1)

A human body detection device for opening a toilet lid according to human body detection by a human body detection sensor ,
With an automatic closing means for closing the toilet lid when the toilet lid is not seated within the required time after the toilet lid is opened,
In the human body detection device having the function of adjusting the detection distance,
The human body detection sensor is installed at a position behind the tank cover when the toilet lid stands up,
Provided with a detection distance adjusting means for reducing the detection distance when the toilet lid is automatically opened within a predetermined time after the toilet lid is automatically closed and then the phenomenon that the toilet lid is automatically closed again is repeated a predetermined number of times or more. Characteristic human body detection device.

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