JP2001307258A - Bath room - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bath room which can rapidly, exactly detect an entrance/ exit to the bath room and behavior in the room regardless of a position and direction of the room door. SOLUTION: The whole bath room comprises a bath room having a bathtub, a washing space, and an entrance to the washing space, a human body-detecting sensor for picking up an image of the human body moving in the bath room and processing the image, and a human body-detecting sensor for detecting the human body by the means other than image pickup, moreover having a region-dividing means for dividing the detected region into a plurality of region.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathroom equipped with a human body detection sensor for imaging the movement of a human body in a bathroom and performing image processing, and a human body detection sensor for detecting a human body by means other than imaging.

[0002]

2. Description of the Related Art Conventionally, it is known to provide a bathroom provided with a bathtub and a washing room with a sensor for detecting entry into, exit from, or movement in the bathroom. Then, proposals have been made to use an infrared sensor, a CCD camera, or the like as the sensor.

[0003]

However, in the conventional apparatus, it is difficult to detect the bathtub and the washing area, but it is particularly difficult to detect the entrance and exit. For this reason, the bathroom is divided into four areas,
There is a method in which two of the four areas are used for detecting movement of a person at an entrance / exit (bathroom door). However, in the above-described method, if the bathroom configuration is different depending on the entrance position and the entrance direction of the bathroom, control software for processing the sensor image must be changed according to the bathroom configuration according to the bathroom configuration. In addition to being complicated, if the installation position of the sensor is slightly deviated from the proper position, the sensor is out of the imaging range, and the position adjustment becomes complicated.

[0004] In view of the above problems, it is an object of the present invention to provide a bathroom which can quickly and reliably detect entry into and exit from the bathroom and behavior in the bathroom regardless of the position and direction of the bathroom door.

[0005]

In order to solve the above-mentioned problems, a bathroom according to the present invention comprises a bathroom having a bath tub, a washing room and an entrance to the washing room, and an image obtained by imaging the movement of a human body in the bathroom. The first feature is that a human body detection sensor that performs processing and a human body detection sensor that detects a human body by means other than imaging are provided, and a region dividing unit that divides a detection region of the human body detection sensor into a plurality of regions is provided. I have. This first
According to the feature of (1), a part of the imageable range (imaging capability range) is set as a detection region of the sensor, and the detection region is divided into a plurality of regions, so that the speed of image processing can be rapidly increased. Moreover, by using two sensors, it is possible to reliably detect entry into the bathroom. In addition, the bathroom of the present invention has a bath having a bathtub, a washing room, and an entrance to the washing room, a human body detection sensor that performs image processing by capturing the movement of the human body in the bathroom, and detects a human body by means other than imaging. A second feature is that an area dividing unit is provided which divides a detection area of the human body detection sensor into two parts, a washing area and a bathtub area. According to the second feature, in addition to the features described above, there is an advantage that software required for image processing can be simplified.

Further, the bathroom of the present invention comprises a bathroom having a bathtub, a washing room, and an entrance to the washing room, a human body detection sensor for imaging the movement of a human body in the bathroom and performing image processing, and means other than imaging. A human body detection sensor for detecting a human body, and two detection areas of the washing body area and the bathtub area detected by the human body detection sensor.
A third aspect is that an area dividing means for dividing into two and an invalid area where image processing is not performed are provided between the washing area and the bathtub area.
The feature is. According to the third feature, in addition to the above features, even if the human body detection sensor slightly deviates from the optimal mounting position, it does not affect image detection within the invalid area. There is an advantage that a margin in image processing control can be obtained for the deviation.

Further, the bathroom of the present invention comprises a bathroom having a bathtub, a washing room, and an entrance to the washing room, a human body detection sensor for imaging the movement of a human body in the bathroom and processing the image, and means other than the imaging. A human body detection sensor for detecting a human body, and two detection areas of the washing body area and the bathtub area detected by the human body detection sensor.
A fourth feature is that it has an area dividing means for dividing the human body detection sensor at a boundary position between the washing area and the bathtub area. According to the fourth feature, in addition to the features described above, it is possible to quickly detect the movement of a person in the washing room and the bathtub regardless of the door position.

Further, the bathroom of the present invention comprises a bathroom having a bathtub, a washing room, and an entrance to the washing room, a human body detection sensor for imaging the movement of a human body in the bathroom, and performing image processing, and means other than imaging. A human body detection sensor for detecting a human body, and two detection areas of the washing body area and the bathtub area detected by the human body detection sensor.
A fifth feature is that an area dividing means for dividing into two and an invalid area where image processing is not performed are provided between the washing area and the bathtub area, and a human body detection sensor is mounted at the position of the invalid area. And According to the fifth feature, in addition to the features described above, a shift in the sensor mounting position can be absorbed, and the degree of freedom in mounting the sensor can be improved.

[0009] In addition, in the bathroom according to the first to fifth aspects of the present invention, a sixth feature is that the human body detection sensor is mounted on a ceiling of the bathroom. According to the sixth feature, in addition to the features described above, the entire bathroom can be easily imaged, and the detection of the interior of the bathroom can be reliably performed in combination with the area dividing means.

Further, in the bathroom according to the first to sixth aspects of the present invention, a seventh feature is that the human body detection sensor is attached to an inspection port on a ceiling of the bathroom.
According to the seventh feature, in addition to the features described above, not only the attachment and detachment of the sensor is facilitated, but also the detection in the bathroom can be reliably performed.

Further, the bathroom of the present invention includes a bathroom having a bathtub, a washing room, and an entrance to the washing room, a human body detection sensor for imaging the movement of a human body in the bathroom and performing image processing, and means other than the imaging. It consists of a human body detection sensor that detects the human body,
An eighth feature is that an entry determining means for determining entry is provided when the human body detection sensor detects a human body in the washroom area within a predetermined time after the human body detection sensor is turned on. According to the eighth feature, it is possible to easily determine whether to enter the bathroom regardless of the door position of the bathroom. Furthermore, in the bathroom according to the first to eighth aspects of the present invention, the ninth feature is that the human body detection sensor is configured by an artificial retinal detection member, and the human body detection sensor is configured by an infrared sensor. According to the ninth feature, the mutual detection is complemented by the double detection of the combination of the detection of a person by imaging and the physical detection by radiation of body temperature.
The behavior in the bathroom could be detected reliably.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall configuration diagram of a bathroom according to the present invention. FIG. 2 is an explanatory diagram showing a relationship between a sensor and a detection area viewed from the ceiling side according to an embodiment of the present invention. FIG. 3 is an explanatory diagram showing a relationship between a bathroom sensor and a detection area according to another embodiment of the present invention. FIG. 4 is a block diagram of an electric circuit showing one embodiment of the present invention. FIG. 5 is a circuit diagram showing a configuration of an image core circuit constituting one pixel of the image detection unit of the human body detection sensor. FIG. 6 is an explanatory diagram showing the relationship between the imaging range of the sensor, the detection range, and the detection area. FIG. 7 is a control flowchart. FIG. 8 is an explanatory diagram of another embodiment showing the relationship between the imaging range of the sensor, the detection range, and the detection area.

FIG. 1 is a cross-sectional view of a bathroom 1 as viewed from the side, schematically showing an embodiment of the present invention, in which a bathtub 2 and a washing place 3 are provided. 4 is an entrance to the bathroom. A human body sensor 5 is installed on the ceiling of the bathroom 1. When the bathroom 1 is a system bathroom, it is desirable to attach the bathroom 1 to an inspection port opened on the ceiling for maintenance and inspection. The human body sensor 5 on the ceiling has an imaging device using an artificial retina, has a human body detection sensor 51 that captures an image of the movement of the human body in the bathroom and performs image processing, and a human body detection device that detects the human body by means other than the imaging device, for example, infrared detection. And a sensor 52.

The output of the human body detecting sensor 5 is connected to a bathroom remote control and a kitchen remote control through a signal line (not shown). The remote controller for controlling the water heater has a display unit such as a lamp for notifying that there is a bather in the bathroom 1. The display is performed when the human body sensor 5 detects the bather and outputs a detection signal from a signal line. The part lights up.

FIG. 4 shows a human body detection sensor 51 using an artificial retina chip and a human body detection sensor 52 using an infrared sensor.
This shows the configuration of the human body sensor 5 composed of the following. The human body detection sensor 51 includes an imaging device 6 that detects a human body and processes the detected image, and a control device 7 that supplies a control signal to the imaging device 6 and determines processing information. In addition to the human body detection sensor 51, a human body detection sensor 52 composed of an infrared sensor is provided in the same case, and the control device 7 is shared so as to supplement monitoring when the bathroom 1 is dark.

The image pickup section 8 of the image pickup device 6 has a length of 128 ×
Of the 128-pixel horizontal C-MOS array and the like, the controller 7
32x32 on RAM capacity of microcomputer
It comprises an image detection unit 9 composed of pixels (= 1024 pixels), an imaging lens 10, a scanner 11, a multiplexer 12, and a scanner drive control unit 13. If the RAM capacity permits, more pixels may be used, or detection processing may be performed by thinning out a large number of pixels. The pixels of the image detection unit 9 have monochrome 256 gradations “level 0 (black) to 2”.
55 (white), 256 gradations ".

In the image pickup section 8, an image in the bathroom is formed on the image detecting section 9 by the image forming lens 10. The drive of the scanner 11 is controlled by a scanner drive control unit 13, and controls each pixel row of the image detection unit 9 so as to sequentially enter a light receiving state (on state) at regular intervals. Photocurrents simultaneously output from the pixels in one column in the light receiving state are converted from analog data into serial data by the multiplexer 12, amplified by the amplifier 14, and then input to the image processing unit 15. The conversion from analog data to serial data and the like may be performed by an externally provided control unit 7 or an IC provided separately. Each pixel of the image detection unit 9 is configured by a pixel core circuit 17 as shown in FIG. The pixel core circuit 17 includes a light receiving element 18, a charge storage circuit 19, and a sensitivity variable circuit 20. The sensitivity variable terminal 21 and the reset terminal 22 are connected to the scanner 11, and the photocurrent output terminal 23 is connected to the multiplexer 12. ing. In FIG. 4, the gain adjustment unit 16 checks the image average value (brightness of the image) in the image processing unit 15, and if the image average value is out of the appropriate range, adjusts the gain of the imaging device 6 by the amplifier 14. And scanner drive control unit 1
The storage time of the image detection unit 9 is adjusted by 3 to adjust the light so as to obtain an image of appropriate brightness.

In the imaging device 6 using the artificial retina, the average value of the image is calculated based on the gradation (0 gradation (black) to 255 gradation (white)) in all 32 × 32 pixels constituting the image detecting unit 9. 25
(6 gradations) and is represented by a value from 0 to 255. The average value of the image is determined by the gain of the amplifier 14 and the accumulation time of the image detector 9. Here, the gain corresponds to the aperture of the camera, and the accumulation time corresponds to the shutter speed of the camera. Therefore, in order to obtain an appropriate image average value of the imaging device 6, the gain is fixed to an appropriate gain,
The accumulation time may be adjusted. Alternatively, the gain may be adjusted by fixing an appropriate accumulation time.

In FIG. 4, at least an image detecting section 9 for performing image pickup and an image processing section 15 for performing image processing.
Is composed of one chip. This chip is called an artificial retinal chip. Also, on the back side of this chip,
The control device 7 is provided with a microcomputer. The control device 7 includes, as software, a region dividing means 24 for dividing a detection region for performing detection processing by the human body detection sensor 51 into a plurality of regions. is there. Specifically, as shown in FIG. 6, a point table 25 for processing image information input to the image processing unit 15 is divided into a plurality of areas. That is, the imaging capability range detectable by the human body detection sensor (point table 25
First, the detection area 26 requiring image processing is
And a non-detection area 27 where image processing is not performed. That is, the entire imaging capability range is not set as the detection area. As a result, a part of the detection processing area that can be detected is used as a sensor detection area for actually detecting and processing, thereby limiting the processing range of the image and increasing the speed of the image processing. Further, the detection area 26 is
It is divided into two areas, a washing area 30 and a bathtub area 31. In addition, as shown in FIG.
An area between 0 and the bathtub area 31 is defined as an invalid area 33, and the invalid area 33 is a non-detection area where no image processing is performed.

The imaging lens 10, the imaging device 6, and the control device 7 constituting the human body detection sensor 51 are housed in one case together with the human body detection sensor 52, and attached to the ceiling of the bathroom 1 as a human body sensor set. Can be 2 and 3 show the mounting position of the human body detection sensor 51. FIG.

In FIG. 2, a human body detection sensor 51 is mounted at a boundary between the washing area 30 and the bathtub area 31 of the bathroom 1. Experiments have confirmed that the imaging area of this sensor in a standard bathroom is in the range as shown in FIG. FIG. 3 shows an invalid area 33 where no image processing is performed between the washing area 30 and the bathtub area 31 of the bathroom 1, and a human body detection sensor 51 is attached to the invalid area position. As a result of the experiment, it was confirmed that the imaging area of this sensor was in the range shown in FIG.

The detection output of the image pickup device 6 and the detection output of the infrared sensor (human body detection sensor 52) are output to the judgment means 32, respectively. The determination means comprehensively determines the presence or absence of a bather and the movement of the bather in the bathroom based on the output from the imaging device 6 and the output from the infrared sensor.

The image detected by the artificial retina is processed as follows. The image processing unit 15 receives image information from all pixels constituting the image detection unit 9 at regular intervals. The image processing unit 15 receives the image information at regular time intervals,
The image information is processed and output to the judging means 32 to monitor the movement of the bather.

More specifically, first, the image processing unit 15 calculates the difference (difference) in the amount of received light between the image (previous image) a predetermined time earlier detected by the image detection unit 9 and the current image (current image). I do. Pixels having a positive difference are represented by +, negative pixels are represented by-, and pixels having a difference of 0 are represented by 0. Since the movement of the object can be determined based on the boundary of the image, the movement of the boundary of the image appears as a positive or negative difference there. Thereby, the moving direction of the image boundary is estimated. By looking at the sum of the differences, it is possible to roughly grasp the movement of the person. Further, the above analysis method is applied to a two-dimensional image. Specifically, the direction on the pixel is divided into four directions of a vertical direction, a horizontal direction, a diagonally rising rightward direction, and a diagonally falling rightward direction. Each time, the difference (scalar) between the current image and the previous image is obtained, the motion in each direction is determined from the image of the difference, and the difference in each direction may be represented as a vector. Then, by averaging the difference vector between the pixel and its surrounding 3 × 3 pixels (optical flow), it is possible to detect the presence or movement of a person in the bathroom.

As shown in FIG. 6, the detection area 26 of the human body detection sensor 51 is divided into two areas, a wash area 30 and a bathtub area 31, and the sum of the differences or the amount of movement is detected for each area. . Here, the amount of motion refers to each region 30, 3
It is the average of the scalar amounts of the optical flows of each pixel for each pixel (scalar average) or the sum of the scalar amounts (scalar sum).

Next, determination of whether or not a person has entered the bathroom 1 will be described. In FIG. 7, when a person starts to enter the bathroom, first, the infrared sensor in a standby state detects a human body and turns on (step S1), and a timer is set (step S2), and the human body detection sensor 51 is set within a predetermined time. When a person is detected in the washing room (step S3), it is determined that the person has entered the room (step S4). In this entry determination, the human body detection by the human body detection sensor 51 requires time for imaging and calculation of the amount of motion, or when the bathroom is dark, the monitoring sensitivity is low. After detecting the human body detection sensor 51
Both compensate for the weakness of the human body detection sensor 51 by detecting a person, thereby ensuring the entry into the room.

Also, when the user leaves the bathroom, the infrared sensor is turned off (No in step S5), and the human body detection sensor 51 does not detect the amount of movement (No in step S6). ) Is determined to have left the bathroom. Since it is possible that an infrared sensor may mistakenly determine the bathtub temperature as a human body temperature, the weak point of this infrared sensor is supplemented by using another sensor. Then, even when the human body detection sensor 51 does not detect a person in the washing room (No in step S3), if a person is detected in the bathtub (step S8), the infrared sensor and the human body detection sensor 51 are within a predetermined time. If both persons are detected (step S
9, S10), it is determined that the person has entered the room (step S4). After it is determined that the person has entered the room, a timer is set (step S11) so that the detection duration time of the sensor matches the average bathing time. The timer set time may be extended by detecting that a person is in the bathroom.

The attachment of the human body detection sensor 51 is as follows.
It is attached to the ceiling of the bathroom 1 at the boundary between the washing area 30 and the bathtub area 31 of the bathroom. This position is the optimum position for monitoring the movement of a person in a bathroom provided with the washing room 3 and the bathtub 2 in a standard bathroom. In particular, bathtub 2 and washroom 3
The boundary can be clarified with respect to the movement of a person in the bathtub 2 and the washing place 3 by being attached to the boundary between the bathtub 2 and the washing place 3. Furthermore, by mounting the human body detection sensor 51 at the position of the invalid area 33 where the image processing is not performed, which is provided between the washing area 30 and the bathtub area 31, it is assumed that the mounting position of the human body detection sensor slightly deviates from an appropriate position. However, since no image processing is performed in the invalid area 33, the two areas of the washroom and the bathtub can always be reliably detected. It is desirable that the gap between the washing area 30 and the bathtub area 31, which is the area width of the invalid area 33, is substantially equal to the case width of the human body sensor 5. Human body sensor 5
The human body detection sensor 51 and the human body detection sensor 52 that constitute the above are housed in one case, so that they can be easily attached and inspection is easy.

In the case of a system bathroom comprising a unit bath or the like, an inspection port for inspection is located on the ceiling of the bathroom, and the human body sensor 5 is attached to the inspection port which is an inspection lid. Is recommended. The inspection port can be attached and detached, so that the human body sensor 5 can be installed,
Not only can the inspection be performed easily, but also the condition of the optimum mounting position of the sensor is satisfied.

The above-described embodiment shows a preferred embodiment of the present invention, and the present invention is not limited to this, and various design changes can be made within the scope. For example, in the present embodiment, the system bathroom has been described. However, the present invention is not limited to this example and can be installed in other existing bathrooms. In this embodiment, an infrared sensor is used as the human body detection sensor. However, a weight sensor or an ultrasonic sensor may be used instead of the infrared sensor. It does not matter.

[0031]

According to the present invention, there is provided a bathroom having a bathtub, a washing room and an entrance to the washing room, and a movement of a human body in the bathroom. Since a human body detection sensor that captures and processes an image and a human body detection sensor that detects a human body by means other than imaging are provided, and an area dividing unit that divides a detection area of the human body detection sensor into a plurality of areas is provided, By using a part of the possible range (imaging capability range) as a detection area of the sensor and dividing the detection area into a plurality of parts, the speed of image processing can be rapidly increased, and using two sensors. As a result, it is possible to reliably detect the entry into the bathroom. In addition, the bathroom of the present invention has a bath having a bathtub, a washing room, and an entrance to the washing room, a human body detection sensor that performs image processing by capturing the movement of the human body in the bathroom, and detects a human body by means other than imaging. Software that is necessary for image processing, in addition to the above features, by providing an area dividing unit that divides a detection area of the human body detection sensor into two parts, a washing area and a bathtub area. There is an advantage that can be simplified. Further, the bathroom according to the present invention has a bathroom having a bathtub, a washing room, and an entrance to the washing room, a human body detection sensor that performs image processing by imaging the movement of the human body in the bathroom, and detects a human body by means other than imaging. A human body detection sensor, an area dividing unit that divides a detection area of the human body detection sensor into two parts, a washing area and a bathtub area, and an invalid area where image processing is not performed between the washing area and the bathtub area. With this, in addition to the above features, even if the human body detection sensor slightly deviates from the optimal mounting position, it does not affect image detection within the invalid area. There is an advantage that a margin in image processing control can be obtained. Further, the bathroom according to the present invention has a bathroom having a bathtub, a washing room, and an entrance to the washing room, a human body detection sensor that performs image processing by imaging the movement of the human body in the bathroom, and detects a human body by means other than imaging. And a region dividing means for dividing a detection region of the human body detection sensor into two parts, a washing region and a bathtub region, wherein the human body detection sensor is provided at a boundary position between the washing region and the bathtub region. By attaching, in addition to the above-described features, it is possible to quickly detect the movement of a person in the washing room and the bathtub regardless of the door position. Further, the bathroom according to the present invention has a bathroom having a bathtub, a washing room, and an entrance to the washing room, a human body detection sensor that performs image processing by imaging the movement of the human body in the bathroom, and detects a human body by means other than imaging. A human body detection sensor, an area dividing unit that divides a detection area of the human body detection sensor into two parts, a washing area and a bathtub area, and an invalid area where image processing is not performed between the washing area and the bathtub area. By attaching the human body detection sensor to the invalid area position, in addition to the above features, absorb the displacement of the sensor mounting position,
The degree of freedom in mounting the sensor can be improved. Furthermore, in the bathroom according to any one of claims 1 to 5, the human body detection sensor is attached to the ceiling of the bathroom. In addition to the above features, the entire bathroom can be easily imaged. In combination, the detection in the bathroom becomes reliable. In addition, in the bathroom according to any one of claims 1 to 6, the human body detection sensor is attached to the inspection port on the ceiling of the bathroom. The detection in the bathroom can be reliably performed. Further, the bathroom according to the present invention has a bathroom having a bathtub, a washing room, and an entrance to the washing room, a human body detection sensor that performs image processing by imaging the movement of the human body in the bathroom, and detects a human body by means other than imaging. The entrance detection means for judging that the person is in the room when the human body detection sensor detects a human body in the washing area within a certain period of time after the human body detection sensor is turned on. It is possible to easily determine whether to enter the bathroom regardless of the position of the door. Further, in the bathroom according to claims 1 to 8 of the present invention, since the human body detection sensor is composed of an artificial retinal detection member and the human body detection sensor is composed of an infrared sensor, the detection of a person by imaging and the human body temperature The dual detection combined with physical detection by radiation compensated for mutual weaknesses and was able to reliably detect bathroom behavior.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a bathroom according to the present invention.

FIG. 2 is an explanatory diagram illustrating a relationship between a sensor and a detection area viewed from a ceiling side according to the embodiment of the present invention.

FIG. 3 is an explanatory diagram showing a relationship between a bathroom sensor and a detection area according to another embodiment of the present invention.

FIG. 4 is a block diagram of an electric circuit showing one embodiment of the present invention.

FIG. 5 is a circuit diagram showing a configuration of an image core circuit forming one pixel of an image detection unit of the human body detection sensor.

FIG. 6 is an explanatory diagram showing a relationship between an imaging range of a sensor, a detection range, and a detection area.

FIG. 7 is a flowchart showing an embodiment of the present invention.

FIG. 8 is an explanatory diagram illustrating a relationship between an imaging range, a detection range, and a detection area of a sensor according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bathroom 2 Bathtub 3 Washing room 4 Doorway 5 Human body sensor 6 Imaging device 7 Control device 9 Image detection part 15 Image processing part 17 Image core circuit 24 Area division means 26 Detection area 30 Washing area 31 Bathtub area 32 Judgment means 33 Invalid area

Claims (9)

[Claims] 1. A bathroom having a bathtub, a washing room, and an entrance to a washing room, a human body detection sensor for imaging a motion of a human body in the bathroom, and performing image processing, and a human body detection for detecting a human body by means other than imaging. A bathroom comprising: a sensor; and a region dividing unit that divides a detection region of the human body detection sensor into a plurality of regions. 2. A bathroom having a bathtub, a washing room, and an entrance to the washing room, a human body detection sensor for imaging the movement of the human body in the bathroom and processing the image, and a human body detection for detecting the human body by means other than the imaging. A bathroom, comprising: a sensor; and a region dividing unit that divides a detection region of the human body detection sensor into a washing room region and a bathtub region. 3. A bathroom having a bathtub, a washing room, and an entrance to the washing room, a human body detection sensor for imaging the movement of the human body in the bathroom and performing image processing, and a human body detection for detecting the human body by means other than the imaging. A sensor, an area dividing means for dividing a detection area by the human body detection sensor into two of a washing area and a bathtub area, and providing an invalid area where image processing is not performed between the washing area and the bathtub area. Bathroom featuring. 4. A bathroom having a bathtub, a washing room, and an entrance to the washing room, a human body detection sensor for imaging the movement of a human body in the bathroom and processing the image, and a human body detection for detecting the human body by means other than the imaging. A sensor and an area dividing means for dividing a detection area by the human body detection sensor into two parts, a washing area and a bathtub area, wherein the human body detection sensor is mounted at a boundary position between the washing area and the bathtub area. A bathroom characterized by the following. 5. A bathroom having a bathtub, a washing room, and an entrance to the washing room, a human body detection sensor for imaging the movement of a human body in the bathroom and processing the image, and a human body detection for detecting the human body by means other than the imaging. A sensor, an area dividing means for dividing a detection area by the human body detection sensor into two of a washing area and a bathtub area, and an invalid area where image processing is not performed between the washing area and the bathtub area. A bathroom, wherein a human body detection sensor is attached to the invalid area position. 6. The bathroom according to claim 1, wherein the human body detection sensor is mounted on a ceiling of the bathroom. 7. The bathroom according to claim 1, wherein the human body detection sensor is attached to an inspection port on a ceiling of the bathroom. 8. A bathroom having a bathtub, a washing room, and an entrance to the washing room, a human body detection sensor for imaging the movement of the human body in the bathroom and performing image processing, and a human body detection for detecting the human body by means other than the imaging. A bathroom, comprising: a sensor; and an entrance determining means for determining that the user is entering the room when the human body detection sensor detects a human body in a washroom area within a predetermined time after the human body detection sensor is turned on. 9. The bathroom according to claim 1, wherein the human body detection sensor comprises an artificial retinal detection member, and the human body detection sensor comprises an infrared sensor.