JP2003067864A - Device for detecting human body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a human body detecting device which is provided with a means for stopping a monitoring function without requiring complicated work and can also display a monitoring stop state. SOLUTION: This human body detecting device consisting of a coming into a room detection mode for detecting a person coming into a room, a body movement stop detecting mode for detecting body movement and also detecting movement stopping, and a monitoring mode composed of the coming into a room detection mode and the body movement stop detecting mode, is provided with a monitoring function stop selecting means for stopping the monitoring mode, and the monitoring function stop selecting means is a setting switch for changing display images such as a bath water temperature and a selection switch for selecting display items of the display images provided on a remote control. Thus, the setting switch and the selection switch provided in the remote control are utilized by using, for example, a remote control for a bath of a water heating appliance to provide the body detecting device that can stop a monitoring function without separately providing a switch and without requiring a complicated work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a human body detecting apparatus which monitors a bathroom or the like and issues an alarm to another person at a remote place when an abnormality such as a fall occurs in the movement of the human body.

[0002]

2. Description of the Related Art Conventionally, in this kind of human body detecting device,
The sensor continuously monitors the bathroom, etc., and when there is no movement of people in the bathroom, the sensor sends a signal to the notification unit such as the bathroom or the notification unit provided at a remote place such as the kitchen to notify the alarm unit. Then, the image and sound warnings are given.

[0003]

However, in the above-mentioned prior art, there is a situation where the alarm sound due to monitoring is troublesome, and although it is not a normal use method, the switch of the apparatus main body is turned off in order to stop the monitoring function. The power supply to the device was cut off to stop the monitoring function. However,
Since this human body detection device is normally installed and installed at a high place, the off operation is troublesome, and if a separate switch is installed, the installation work becomes complicated. Also, when monitoring is stopped, nothing is displayed on the display, so if a bather who needs to be monitored continues to bathe, the bather cannot identify whether the monitoring is stopped or not. .

In view of the above problems, it is therefore an object of the present invention to provide a human body detection device which is provided with means for stopping the monitoring function and which can display the stopped state of monitoring without requiring complicated work. And

[0005]

In order to solve the above-mentioned problems, the human body detecting apparatus of the present invention detects a human body entering a room and a human body detecting mode, and detects the movement of the human body and also detects the stop of the movement. In a human body detection device having a human body movement stop detection mode, and a monitoring mode composed of the entry detection mode and the human body movement stop detection mode, a monitoring function stop selection means for stopping the monitoring mode is provided, and the monitoring function is provided. The first feature is that the stop selection means is selected by a setting switch provided on the remote controller for changing the display screen such as hot water temperature and a selection switch for selecting display items on the display screen. According to the first feature, for example, by using and utilizing a remote controller for a bath of hot water equipment, the setting switch and the selection switch provided in the remote controller are used, and a separate switch is not provided, which is complicated. It is possible to provide a human body detection device that can stop the monitoring function without requiring construction.

Further, the human body detecting apparatus of the present invention comprises a human body detecting apparatus which comprises an entrance detecting mode for detecting the entry of a person and a human body movement stop detecting mode for detecting the movement of the human body and the stop of the movement. In the case where a monitoring function stop selection means for stopping monitoring of the human body motion stop detection mode and a selection switch for selecting the monitoring function stop selection means are provided, and the selection switch is selected, and A second feature is that a display means is provided to display that the monitoring is stopped when an entry is detected in the entry detection mode. According to the second feature, not only the monitoring function can be stopped, but also the fact that the monitoring is stopped can be displayed at the time of entering the room, which gives the following bather a sense of security.

Further, the human body detecting apparatus of the present invention comprises an image pickup apparatus for picking up an image of a monitoring area at a predetermined time interval, and a movement for calculating a movement amount of a human body as a difference in light receiving amount by comparing both images before and after the predetermined time interval. Amount calculation means, a human body detection sensor having the movement amount calculation means, a motion presence / absence determination means for determining the presence / absence of motion by the movement amount calculation means, and an entrance detection mode for detecting that a person has entered the room by the human body detection sensor And a human body movement stop detection mode in which the movement of the human body is detected by the movement presence / absence determining means and a movement stop is detected, and a monitoring function stop selecting means for stopping monitoring of the human body movement stop detection mode. And a selection switch for selecting the monitoring function stop selection means,
When the selection switch is selected, and
A third feature is that a display means is provided for displaying that the monitoring is stopped when the entry is detected in the entry detection mode. According to the third feature, by calculating the actual amount of movement to detect the movement of the human body and determining the entry into the room, the human body can be reliably detected and can be displayed, and the display shifts to a bath without a display. There is no fear of doing so.
Furthermore, the human body detection device of the present invention is a motion amount calculation means for calculating the amount of movement of the human body as a difference in the amount of received light by comparing the image amount of the human body with the images before and after the predetermined time interval. A human body detection sensor having the movement amount calculation means, a motion presence / absence determination means for determining the presence / absence of movement by the motion amount calculation means, an entrance detection mode for detecting that a person has entered the room by the human body detection sensor, A human body detection device comprising a human body movement stop detection mode for detecting movement of a human body by a movement presence / absence determination means and detecting movement stop, and a monitoring function stop selection means for stopping monitoring of the human body movement stop detection mode, A selection switch for selecting the monitoring function stop selection means is provided, and when the selection switch is selected and the entry detection mode is selected, The the provided display means for displaying that it is in a stopped state of the monitoring upon detection, and the fourth, characterized in that the stop cancellation promoting display displayed on the display means to promote the release of the stop display after monitoring stop. According to the fourth feature, in addition to the features described above, the subsequent bather turns on the switch by the stop release accelerating display, so that there is no possibility of shifting to bathing while the monitoring is stopped.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall configuration diagram showing an embodiment of the present invention. FIG. 2 is a block diagram of an electric circuit showing an embodiment of the present invention. FIG. 3 is a circuit diagram showing the configuration of an image core circuit that constitutes one pixel of the image detection unit of the human body detection sensor. FIG. 4 is an explanatory diagram showing the relationship between the imaging range of the sensor, the detection range, and the detection area. Figure 5
3 is a control flowchart showing an embodiment of the present invention. FIG. 6 is a flowchart of human body stoppage detection showing an embodiment of the present invention. FIG. 7 is an explanatory diagram of an embodiment showing the relationship between the human body detection sensor, the hot water equipment, and the remote controller.
FIG. 8 is a block diagram of electric control of another embodiment showing the relationship among the human body detection sensor, the hot water equipment, and the remote controller. FIG. 9 is an enlarged view of the storage unit showing an embodiment. (A) of FIG.
Is a diagram showing a current image and a previous image of an object moved to the lower right, (b) is a diagram showing the brightness of the previous image for each pixel, (c)
FIG. 4 is a diagram showing the brightness of the current image for each pixel. FIG. 11 is a diagram showing a difference image showing changes in brightness and darkness in pixels corresponding to image boundaries. FIG. 12 is an electric circuit block diagram showing one embodiment, and FIG. 13 is a flowchart of human body monitoring showing one embodiment. FIG. 14 is an electrical block diagram showing the relationship between the remote controller and the human body detection sensor. FIG. 15 is an electric circuit diagram showing the connection relationship between the remote controller, the hot water equipment, and the human body detection sensor according to another embodiment. FIG. 16 is an electrical block diagram showing the display relationship.

FIG. 1 shows an outline of an embodiment of the present invention, in which a bathtub 2 and a washroom 3 are provided inside a bathroom 1. Reference numeral 4 is an entrance to the bathroom 1. A human body sensor 5 is attached to the upper part of the inner wall surface of the bathroom 1. Specifically, it is attached to the upper portion of the wall surface of the bathroom which is in contact with the longitudinal direction of the bathtub 2. The hot water equipment 40 includes a bath remote controller 60 installed in a bathroom for operating the hot water equipment 40 from a remote position.
Also, a kitchen remote controller 70 installed in the kitchen is connected.
Although the human body sensor 5 is attached to the wall surface of the bathroom 1 in the present embodiment, the human body sensor 5 is not limited to this example and may be attached to the ceiling surface of the bathroom 1. The human body sensor 5 has an imaging device using an artificial retina, and is composed of a human body detection sensor 51 that images the movement of the human body in the bathroom 1 and performs image processing, and an infrared sensor 52 that detects the human body by heat detection by infrared rays. is doing. The image pickup device picks up an image of a monitoring area such as a bathroom at predetermined time intervals. The human body detection sensor is not limited to the bathroom, but may be installed in a toilet, a washroom or the like.

The hot water device 40 is a device for heating hot water and supplying it to a bathtub or the like. Specifically, it is composed of a bath kettle with a water heater, a heater with a water heater, a hot water heater, a water heater and the like. ing. The hot water equipment may not only use gas as a fuel but may also use oil as a fuel. Hot water equipment 40,
Regarding the connection between the remote controllers 60 and 70 and the human body detection sensor 51, in the one shown in FIG. 1 showing an embodiment of the present invention, first, the hot water equipment 40 and the kitchen remote controller 70 are connected by a cable 41, and then the hot water. The equipment 40 and the bath remote controller 60 are connected by a cable 41, and the hot water equipment 4
0 and the human body detection sensor 51 are connected by a cable 41. The remote controller 60 for controlling the water heater,
70 has a display means such as a liquid crystal display panel for notifying that there is a bather in the bathroom 1. When the human body sensor 5 detects the bather and outputs a detection signal, the display means displays a light or the like. It is supposed to do. The display means is not limited to the one described above, and when the bather has not been moving for a certain period of time, it is presumed that he or she is sleeping in the bathtub or has fallen down. When the response is not received within a predetermined time, the kitchen remote controller 70 alerts other persons such as family members by an alarm sound or voice.

The hot water equipment 40 has a built-in heat exchanger and burner, and is provided with various sensors for control. A hot water supply drop pipe 46 is connected from the hot water equipment 40 to the bathtub 2. Further, the power source for operating the human body sensor 5 is introduced from the power plug 47 of the water heating device 40, and the controller 42 of the water heating device 40.
It is supplied after being stepped down and lowered in voltage through a transformer (not shown). It should be noted that the human body sensor 5 is connected with a leaving switch 80 for stopping the operation of the sensor when leaving the room.

FIG. 2 shows a specific structure of the human body sensor 5 which is composed of a human body detection sensor 51 using an artificial retina chip and an infrared sensor 52. Human body detection sensor 51
Is an image pickup device 6 for picking up an image of the monitoring area at predetermined time intervals,
The control device 7 is composed of a microcomputer that controls the image pickup device 6 and processes and determines a picked-up image, and a peripheral member thereof. Further, the control device 7 and the remote controllers 60 and 70 described above are configured to transmit and receive by a communication unit 53 such as a communication IC described later. Further, in addition to the human body detection sensor 51, an infrared sensor 52 is provided in the same case body, and the control device 7 thereof is shared so as to mutually complement the monitoring when the bathroom 1 is dark.

The image pickup unit 8 of the image pickup device 6 has a vertical length of 128 ×
It is composed of an image detection unit 9 having a resolution of 128 pixels horizontally, an imaging lens 10, a scanner 11, a multiplexer 12, and a scanner drive control unit 13. The image detection unit 9 may use vertical 32 pixels × horizontal 32 pixels, or may perform image detection processing with a part of a large number of pixels. The pixels of the image detection unit 9 have 256 levels of monochrome “level 0 (black) to 2”, respectively.
It is represented by 256 gradations of 55 (white).

Then, in the image pickup section 8, the image in the bathroom is formed on the image detection section 9 by the image forming lens 10. The scanner 11 is drive-controlled by the scanner drive control unit 13, and the scanner drive control unit 13 controls each pixel row of the image detection unit 9 so as to be sequentially in a light receiving state (ON state) at regular intervals. . The photocurrents simultaneously output from the pixels in one column in the light receiving state are combined into a single electric signal by the multiplexer 12 and amplified by the amplifier 14 before being output as an analog voltage. The converter of the control unit 7 is used to convert analog data into digital data.

Further, each pixel of the image detecting section 9 is composed of 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, and a sensitivity variable terminal 21.
The reset terminal 22 is connected to the scanner 11, and the photocurrent output terminal 23 is connected to the multiplexer 12.

In FIG. 2, the gain adjustment unit 16 checks the image average value (image brightness) in the image output unit 15, and if the image average value is out of the appropriate range, the amplifier 14 causes the image pickup device 6 to operate. In addition to adjusting the gain, the scanner drive control unit 13 adjusts the storage time of the image detection unit 9 to perform light control so that an image with appropriate brightness can be obtained. This dimming may be performed for each of the divided detection areas described later.

In the image pickup device 6 using the artificial retina, the image average value is the gradation (0 gradation (black) to 255 gradation (white) of 256 gradations) in all the pixels that constitute the image detecting section 9. It is an average value and is expressed by a value of 0 to 255. This image average value 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 image pickup device 6, it is only necessary to fix the gain to an appropriate value and adjust the accumulation time. Alternatively, an appropriate accumulation time may be fixed and the gain may be adjusted.

Then, in FIG. 2, at least an image detecting section 9 for performing image pickup, a scanner 11, and a scanner driving section 1
3 and the gain adjusting unit 16 are configured by one chip.
This chip is called an artificial retina chip. Further, a control device 7 is provided on the back surface of the chip, and the control device 7 is composed of a microcomputer incorporating various kinds of software.
The area dividing means 24 for dividing the detection area for performing the detection processing into a plurality of areas is incorporated as software.

Specifically, as shown in FIG. 4, the point table 25 for processing the image information input to the control device 7 is divided into a plurality of areas. That is, the imaging capability range (corresponding to the entire point table 25) that can be detected by the human body detection sensor 51 is defined as a detection area 26 that requires image processing and a non-detection area 27 that does not perform image processing.
It is divided into and. That is, the entire imaging capability range is not set as the detection area. As a result, a part of the detection processing area where detection processing can be performed is used as a sensor detection area for actually detecting and processing, thereby limiting the image processing range and accelerating the image processing speed. Further, as shown in FIG. 4, the detection area 26 is replaced with an entrance area 29 and a wash area 3
The area is divided into three areas of 0 and the bathtub area 31. The division of the detection area 26 is not limited to this example, and the detection area 26 may be divided into two areas, an entrance area 29 and an area other than the entrance area 29. For example, the washing area 30 and the bath area 31 may be combined into one area. In the case of a bathroom, the entrance area 29 is an area located inside the bathroom and near an entrance door to the bathroom. The washing area 30 mainly means an area of a floor portion where the head and body are washed, and the bath area 31 means an area where the bath is located. Image information is sequentially input to the control device 7 for each of the areas thus divided, and processing such as detection and calculation is performed for each pixel in each area.

The imaging lens 10, the image pickup device 6 and the control device 7 constituting the human body sensor 51 are housed together with the infrared sensor 52 in one case, and attached to a wall surface or the like as a human body sensor set. The mounting position may be such that the entire bathroom 1 including the entrance / exit 4 to the bathroom is included in the viewing angle.

Then, the detection output of the image pickup device 6 and the detection output of the infrared sensor 52 are input to the determination means 32, respectively. The determination unit 32 is configured to comprehensively determine the presence or absence of a bather in the bathroom, the movement of the bather, and the like based on the output from the image pickup device 6 and the output from the infrared sensor 52.

The image detected by the artificial retina chip is image-processed as follows. The control device 7 for controlling and processing the image receives the image information from all the pixels forming the image detection unit 9 at regular time intervals. When the image information is received at regular time intervals, the image information is processed and the determination means is executed. The movement of the bather is determined by 32.

Next, an image processing method for extracting the movement of a person from an image captured by the image pickup apparatus will be described. Upon receiving the image information at predetermined time intervals, the control device 7 including a microcomputer analyzes the movement of the bather from the image information according to a predetermined analysis algorithm and monitors the movement of the bather.

Specifically, as shown in FIG. 10A, the image (bright image) P of a square object is changed from position P1 to position P2.
Suppose you moved to. At this time, if a bright pixel is represented by a symbol B and a dark pixel is represented by a symbol D, the previous image is represented by FIG. 10 (b) and the current image is represented by FIG. 10 (c). The images before and after this are temporarily stored by the image storage means 115 in FIG. The captured images are sequentially updated so that the latest two images are always stored. Then, the motion amount calculating means 111 compares the two images for each of the divided areas, and for each pixel (x, y) of each area, the previous image p
Received light amount Pp (x, y) of the current image n and received light amount Pn (x, y) of the current image n
The difference (motion amount) D (x, y) = Pn (x, y) -Pp (x, y) from y) is calculated, and the calculation result can be obtained as a difference image as shown in FIG. In the difference image of FIG. 11, a pixel having a positive difference D (x, y) is represented by a + symbol, a negative pixel is represented by a − symbol, and a pixel having a D (x, y) of zero is represented by a 0 symbol. There is. By capturing the sum of such differences,
Whether or not there is motion can be determined for each area, and this determination is performed by the motion presence / absence determining means 114. If there is no motion amount, it is determined that there is no motion, and if there is motion amount, it is determined that there is motion.

On the other hand, the motion presence / absence detection unit 112 detects whether or not there is a motion in each divided region. That is, the captured image captured by the imaging device 6 is read by the control device 7 at regular intervals of the entrance area 29, the wash area 30 and the bathtub area 31, and the image data is analyzed to show a moving area. Is detected. This detection may be performed, for example, by detecting the area where the above-described amount of movement has occurred as a moving area. Alternatively, the change in voltage caused by the movement of a person may be detected, and the changed area may be determined as the moving area and the detected area may be detected. Then, whether or not the area in which the motion is occurring corresponds to the area specified in advance is determined by the specific area corresponding determination means 113. The specific area means the bath area 31 or the wash area 30, and is an area excluding the entrance area 29. Whether or not the moving area is the specific area depends on, for example, whether or not the signals match, or by sequentially searching other detection areas and determining that if there is no movement in the area other than the specific area, it corresponds to the specific area. There is. In such a search, the state is sequentially transited based on the presence / absence of a motion and the signal of the region having the motion, and the search is performed in the microcomputer.

Further, the human body detection sensor 51 is provided with a sensitivity adjustment circuit (not shown) for automatically adjusting the sensitivity,
The detection accuracy is increased by increasing the sensitivity when the bathroom is dark and decreasing the sensitivity when the bathroom is bright.

Next, referring to FIG. 5, a room entry detection mode for detecting that a person has entered the bathroom 1 will be described. Turn on the remote control switch of the hot water equipment in advance. Figure 5
When a person starts to enter the bathroom 1, first, the infrared sensor 52 in the standby state detects the human body and turns on (step S1), and a timer is set (step S).
2) When the human body detection sensor 51 detects a person in the washing room within a certain time (step S3), it is determined that the person has entered the room (step S4). In this entry determination, since the human body detection by the human body detection sensor 51 requires time for imaging and calculation of the amount of movement, or the monitoring sensitivity is low when the bathroom 1 is dark, the infrared sensor 52 is also used.
After the infrared sensor 52 detects the human body detection sensor 51, the human body detection sensor 51 also detects a person, thereby compensating for the weak points of the human body detection sensor 51 and ensuring the entry of the room.

Further, even when the user exits the bathroom 1, if the infrared sensor 52 is turned off (No in step S5) and the human body detection sensor 51 does not detect the amount of movement (in step S6). If the answer is no, the exit switch 80 is turned off to determine that the user exited the bathroom 1 (step S7). If only the infrared sensor 52 remains stopped at the entrance, it will be turned off, and it may be erroneously determined that the user has exited. Therefore, it is possible to make an exit determination by not detecting the human body of both sensors, and This is complemented by using other sensors.

Even if the human body detection sensor 51 does not detect a person in the washroom 3 (NO in step S3), it detects a person in the bathtub 2 (step S3).
8) If both the infrared sensor 52 and the human body detection sensor 51 detect a person within a predetermined time (step S
9, S10), it is determined that the user has entered the room (step S4). In addition, after it is determined that the user has entered the room, a timer may be set so that the detection duration of the sensor corresponds to the average bathing time.

The attachment of the human body detection sensor 51 is
The position is the ceiling of the bathroom 1 or the upper part of the bathroom wall surface, and this position is the optimum position where the movement of a person in the bathroom provided with the washroom 3 and the bathtub 2 can be overlooked in a standard bathroom. Human body detection sensor 51 and infrared sensor 52 that form the human body sensor 5
Is easy to install by storing in one case,
Inspection is also easy.

Next, a connection structure of another embodiment between respective members such as a sensor and a remote controller which constitute the entire apparatus will be described with reference to FIG. The bath remote controller 60 and the kitchen remote controller 70 are connected to the controller 90 of the controller in the hot water equipment 40 by a cable 41 of a wired remote controller.

The human body detection sensor 51 is a cable 41.
Is connected to the bath remote controller 60. The bath remote controller 60 is provided with a connecting terminal 85 for connecting the cable 41, and power for operating the human body detection sensor 51 is supplied from the bath remote controller 60. The connection between the human body detection sensor 51 and the hot water equipment 40 or the remote controls 60, 70 is not limited to the above example, and as shown in FIG. 8, a kitchen remote controller connected to the hot water equipment 40 via the communication IC from the human body detection sensor 51. 7
You may connect from 0 through the bath remote controller 60. In addition, the kitchen remote controller 70 and the bath remote controller 60 are connected via the communication IC.
The hot water equipment 40 may be connected in this order. Alternatively, as shown in FIG. 15, the human body detection sensor 51 and the hot water device 40 may be directly connected via a communication IC, similarly to the connection between the bath remote controller 60 and the kitchen remote controller 70. Furthermore, when installing in a toilet, the human body detection sensor installed in the toilet and the remote controller for the shower toilet seat are connected to the shower toilet seat body, while the alarm unit installed in the living room and the shower toilet seat body are connected via a communication IC. Just connect it.

In FIG. 7, the control unit 90 includes a water heater control unit 91 for controlling the hot water equipment 40, and a speaker or the like provided on each of the remote controllers 60 and 70 which is operated by an abnormality detection signal from the human body detection sensor 51. Notification means 61, 71
Is provided with a notification operation unit 92 for operating the above, and a notification canceling unit 93 for canceling the notification by the notification means. The notification operation unit 92 and the notification canceling unit 93 may be provided on the sensor side or the remote controller side. This can reduce the control load on the hot water equipment side.

Further, the bath remote controller 60 has an intercom switch which is a notification canceling means 62 for canceling the notification, an operation switch 63 for operating the hot water equipment,
Display means 64 such as a liquid crystal display plate and a touch panel for displaying is provided. The notification may be canceled by the operation switch of the remote controller. Also kitchen remote control 7
0 is provided with an intercom switch, which is a notification canceling means 72 for canceling the notification, an operation switch 73 for operating the hot water equipment, and a display means 74 for displaying. Further, it is recommended that the notifying means 61 and 71 provided for each remote controller for notifying the voice are constituted by a speaker and a voice IC.

Further, when the notification canceling means 72 does not cancel the notification, a telephone calling section 100 for calling a specific telephone number for emergency contact may be provided in the control section 90.

FIG. 8 shows a human body detection sensor 51 and each remote controller 6
It is an example of a circuit diagram showing a communication connection relationship between the 0.70 and the hot water equipment 40, and this embodiment is connected using a communication IC. The human body detection sensor 51 includes, in addition to the above-described imaging device 6, a control device 7 and a communication unit 53 including a communication IC for communication.
Is provided. This communication unit 53 is an analog communication unit 55.
And the digital communication unit 56, and the analog communication unit 55 is, for example, ASK (amplitude shift keying).
It may be configured by a method. Further, the digital communication unit 56 may employ, for example, a QPSK (quadri phase shift keying) system or a digital high-speed modulation system such as M16QAM, GFSK, or BPSK.

In the bath remote controller 60, in addition to the operation switches described above, a display means 64 comprising a dot matrix display section, a bath remote controller controlling section 65, the same analog communication section 66 comprising a communication IC for communication, and digital communication. A section 67 is provided. Further, the bath remote controller 60 is provided with a voice IC 68 for notification and a PCM codec 69 on a speaker 61. This PCM codec 69
For example, PCM (pulse code such as ADPCM, DPCM)
modulation) method, which encodes and decodes audio information and video information.

Further, the intercom switch 62 of the bath remote control 60 is for pressing a call button to bring it into a call state with the speaker of the intercom provided in the kitchen remote control 70. It may also be used as a microphone switch. Then, when the intercom stops are detected, or when an alarm is issued by the notification means, the intercom can be used to talk between the bath and the kitchen without pressing the call button. An intercom operating means 120 is provided. The intercom operating means 120 is programmed in the microcomputer as software, and the microcomputer itself may be provided in the bath remote controller, or may be provided in the human body detection sensor 51 or the controller of the hot water equipment. . In FIG. 12, the human body detection sensor 5
1 is programmed in the microcomputer of the controller 7. The remote control case of the bath remote control 60 is provided with a connection terminal 85 for connecting the cable 41. The human body detection sensor is passed through the bath remote control 60 via the kitchen remote control 70 connected to the hot water equipment 40 by the cable 41. A power supply for operation is supplied to 51.

Further, the human body detection sensor 51 is provided with a data storage unit 54 including a voice storage unit and an image storage unit described later. In the kitchen remote controller 70, in addition to the operation switches 73 described above, a display unit 74 including a dot matrix display unit, a kitchen remote controller control unit 75, an analog communication unit 76 including a communication IC for analog communication, and a communication IC for digital communication are provided. The digital communication unit 77 is provided. Reference numeral 78 is a voice IC, which is an IC for informing the speaker 71, etc.
Is. 79 is a PCM codec. Further, the intercom switch 62 of the kitchen remote controller 70 is in a call state with the speaker of the intercom provided in the bath remote controller 60 by pressing the call button. It may also be used as a microphone switch. Then, similarly to the above, when the stop of the movement of the human body is detected, or when the alarm by the notifying means is issued, the call between the bath and the kitchen is enabled and the intercom can be talked without pressing the call button. It is designed to work. Hot water equipment 40
In addition to the control unit 90 and the hot water supply control unit 91 described above, an analog communication unit 95 including a communication IC for communication, a transformer 96 for lowering the commercial power supply voltage, and the like are provided.

The analog communication section 55 and the digital communication section 56 of the human body detection sensor 51 are connected to the bath remote controller 60.
The analog communication unit 66 and the digital communication unit 67 of the bath remote controller 60 are connected to the analog communication unit 66 and the digital communication unit 67 of the bath remote controller 60, and the analog communication unit 76 and the digital communication unit 77 of the kitchen remote controller 70 connect the hot water device 40. It is connected to the analog communication unit 95. The cable 41 between these communication parts uses a power superposition type two-core cable,
The signal for the sensor and the control signal for the normal hot water supply control may be superimposed and transmitted.

FIG. 9 is an EEPROM provided in the human body detection sensor for operating the human body detection sensor and informing the notification means.
It is explanatory drawing which shows the content of the data storage part 54 comprised from the etc.

In FIG. 9, a voice storage unit 101 stores voice data for notifying the voices to the above-mentioned notifying means 61, 71 of the remote controller. The voice storage unit 101 has at least an operation request notification voice storage unit 107 that stores voice data for notifying a bather of a request to move the body with a message “Please move”, and a bath. When the person stops moving and a predetermined time elapses, an alarm notification voice storage unit 108 storing voice data for issuing an alarm to another person, "please go to see the bathroom", and "stop monitoring". It is composed of a stop notification voice storage unit 109 in which voice data for issuing an alarm saying "I am doing" is stored. Further, the operation request notification voice storage section 107 and the notification means 61, 71 constitute an operation request notification means.

An image storage unit 102 stores image display data for displaying an image for human body detection on the display means 64, 74 provided in the remote controller.
The image storage unit 102 is for displaying a function necessary for human body detection by an image, and for example, an operation image for storing image data for displaying a screen required for an initial operation of human body detection on the display means. A storage unit 103, a stop image storage unit 104 for storing image data for displaying the state in which the movement of the human body is stopped on the display unit, and an image data for displaying the state for notifying the notification unit on the display unit. The notification image storage unit 105 and the other storage unit 106 for storing data necessary for displaying other images. In the other storage unit 106, a monitor stop display image storage unit 1061 that stores image data for displaying that the monitor is in a stopped state on the display unit, and a stop release promotion display that promotes release of the monitor are displayed. A monitoring stop release promotion display image storage unit 1062 for storing image data to be displayed on the means is provided.

Although the image storage unit 102 is provided on the human body detection sensor 51 side in this embodiment, the present invention is not limited to this example, and as shown in FIG. 16, the remote controller side, for example, the bath remote controller 60 of the bath remote controller 60. The microcomputer of 65 may be provided integrally or separately. Then, the bath remote controller control unit 65 calls the image data from the other storage unit 106 of the image storage unit 102 to display the image data on the display unit 6.
The motion image display means 133 for displaying at 4 and 74 is programmed. The motion image display means 133 is operated by a signal of motion amount detection by the motion amount calculation means 111. And a plurality of sheets (for example, 5
By sequentially displaying (still) still images on the screen of the display means at regular time intervals, a moving image can be formed due to an afterimage.

Further, the bath remote controller control unit 65 calls the data of one still image corresponding to the stopped state from the plurality of still images in the other storage unit 106 of the image storage unit 102, and displays it. The stop image display means 134 for displaying at 64 and 74 is programmed. The display by the stop image display means 134 is canceled by the display canceling means. The releasing means is configured to be released in response to a detection signal obtained by detecting movement of a human body, for example. A moving image may be displayed at the same time as the release.

Further, the stop image display means 134 is adapted to be operated by a signal for judging the stop of the human body by the judging means 32. The bath remote controller control unit 65 is programmed with a switching unit 135 for releasing the display by the stop image display unit 134, activating the motion image display unit 133, and switching to a moving image. Switching means 13
5 is specifically operated by a signal from the operation switch 129 of the remote controller.

When the human body detection operation is performed, the operation switch of the remote controller is operated in advance to detect the human body detection sensor 5.
An initial screen image required for the operation is called from the operation image storage unit 103 on the first side and displayed on the display units 64 and 74, and a specific screen is selected from the screen to start the operation. From the second time, these may be stored and used. Simultaneously with the operation, a part of the voice data is called from the voice storage unit 101 on the human body detection sensor 51 side, and the notification means 6 such as a speaker is called.
1 and 71 are used to notify by voice.

Next, when the entry decision is made as described above, as shown in FIG. 6, the human body movement stop detection mode for detecting the movement of the human body and the stop of the movement is entered, and the image pickup device 6 is entered. As described above, the human body is imaged at predetermined time intervals (step S11), and the captured previous image and the current image after a predetermined time are temporarily stored in the control device 7 (step S12).

Next, the motion amount calculating means 111 programmed in the control device 7 calculates the difference (motion amount) between the light receiving amount of the previous image and the light receiving amount of the current image for each pixel in each area. (Step S13). When the movement of the human body is detected by the movement amount calculation, the image data is called from the image storage unit 102, and the movement image display unit 133 causes the display unit 6 to display.
A moving image is displayed on pages 4 and 74 (step S2).
1). This moving image may be composed of, for example, an animation of moving a hand and an image of moving a body up and down, left and right. Specifically, it may be composed of a plurality of still-state pictorial images having slightly different pictures. Then, the display plates of the display means 64, 74 are used as a liquid crystal display portion of the matrix, so that the light and dark (white, black) of each dot forming the matrix are combined to form a plurality of symbols, and the plurality of symbols are formed. It is possible to display in a pseudo manner by repeatedly displaying the symbols on the screen in a fixed order. On the other hand, the motion presence / absence detection unit 112 detects a region in which motion is occurring (step S14).

Then, these pieces of information are sent to the judging means 32 of the control device 7. In the judging means 32, the specific area matching judging means 113 judges whether or not the area in which the motion is occurring corresponds to a previously specified area, that is, the bathtub area 31 or the washing area 30. Further, in parallel with the determining means 32, the motion presence / absence determining means 114 determines whether or not there is a motion.

When the area in which the motion is occurring corresponds to the bathtub area 31 or the wash area 30 (in the case of YES in step S15) and when it is determined that there is no motion (in the case of YES in step S16) ), It is estimated that the bather has fallen in the bathroom, and it is determined that the movement of the person has stopped (step S17). By this stop determination, the next notification alarm step is performed.

If it is determined that there is movement in the bathtub or the washing area (NO in step S16), imaging, calculation and determination are repeated at predetermined time intervals and repeated as described above. Of. Further, step S15
In the case where the area where the motion is occurring is other than the bathtub or the wash area (in the case of NO in step S15) and it is determined that there is no motion thereafter (in the case of YES in step S18), the infrared rays are detected. If the sensor 52 is turned off (Yes in step S19), the exit switch 8
When 0 is turned off, it is determined that the user has exited the bathroom (step S20). In addition, when the area where the movement is occurring is other than the bathtub or the wash area (in the case of No in step 15) and the movement continues after that (in the case of No in step S18), the bathroom entrance It is believed that they are active in the vicinity, so they are continuously monitored. As described above, even when the vehicle stops at the entrance area, it is not determined that the vehicle has stopped, so that an alarm due to an erroneous determination is not generated.

Next, the alarm flow for human body monitoring shown in FIG. 13 will be described. When the stop determination is made as described above (step S30), the stop determination signal is output, the moving image is stopped, and the stop image display means 134 is activated to display an image indicating the stopped state. Display means 6
4 and 74 (step S30). That is, the moving image is stopped and the still image is displayed. As a result, the bather will be conscious of starting to move,
Also, family members can know the state of the bathroom before the alarm.

The control device 7 for the human body detection sensor 51
The timer means 117 provided in step S31 starts the stop count operation (step S31). The timer means 117 is started by a stop determination signal from the determination means 32 and counts a predetermined time. This predetermined time is divided into two steps, and the predetermined time of the first step is, for example, 90 seconds,
The predetermined time of the second stage following this is set to 30 seconds.

Then, the timer means 117 and the display means 6
In relation to Nos. 4 and 74, the timer means 117 uses the clock function of the microcomputer, which is the control means of the human body detection sensor 51, and normally counts the time. This time is displayed by the time display means 130 of the microcomputer of the bath remote controller 60 provided in the bath remote controller 60 by the display means 6 of the bath remote controller 60.
It is displayed in 4. Further, the microcomputer of the bath remote control unit 65 is provided with the timer means 1 after the stop determination.
A count display means 131 for displaying the count on the display means 64 is provided after a set time has elapsed from the start of counting by 17. Further, in the microcomputer of the bath remote control unit 65, the switching display means 13 for switching the screen of the display means 64 from the time display to the count display.
2 is provided.

In FIG. 13, when the set time elapses after the stop determination (Yes in step S40), the count display means 131 causes the display means 64,
A numerical value is displayed on 74 (step S41). Instead of numerical values, different pictorial diagrams may be displayed according to the passage of time. Although the count is started here, by delaying the display of the count only by the set time from the start of the count, which is the time when the stop is determined, the bather may feel anxiety that the count will start immediately after the stop. Can be wiped off.
Further, in response to an operation request described later, when the movement is started, the timer is released, the count display itself can be omitted, and the number of times of switching to the clock display can be reduced.

Further, when the motionless state continues for the first predetermined time (90 seconds) (step S33), a motion request signal is output from the human body detection sensor 51 side (step S33).
34), the bath remote controller 60 notifies the bather of the operation request (step S35). Regarding this notification procedure, the previously stored information corresponding to the stopped scene is read from the operation request notification voice storage unit 107 of the voice storage unit 101 side of the human body detection sensor 51 and the stopped image storage unit 104 of the image storage unit 102. Then, the data is transmitted via the analog communication unit 55 and the digital communication unit 56, and the remote control unit is notified by voice and displayed as an image.

More specifically, this notification may be made, for example, by voice information and a character image such as "There is no movement in the bathroom. Please move." This is to prevent the false alarm of the human body detection sensor by requesting the bather to move in the bathtub because the motion may stop if the user stays still in the bathtub. This notification is given after a while after it is soaked in the bathtub and does not move, that is, after the stop determination and after a predetermined time elapses. Therefore, the operation request is not made immediately after being immersed in the bathtub.

When the human body detection sensor 51 detects the movement of a person within the above predetermined time after the stop determination (step S3)
(No in 2), it can be assumed that the bather is alive and the timer is canceled (step S42). And at the same time,
In response to the detection signal obtained by detecting the movement of the human body, the display of the still image by the still image display means 134 is canceled (step S43). After being released, the moving image display means 133
Therefore, the moving image may be displayed again. This allows family members in remote locations to know that they have started moving after the stop.

Then, even after the operation request is notified (step S35), if the still stopped state continues for the second predetermined time (30 seconds) (Yes in steps S36 and 37), An abnormal state is determined, an abnormality detection signal is output from the determination unit 32, and the alarm notification voice storage unit 108 and the image storage unit 1 of the voice storage unit 101 are output.
Information stored in advance for notifying another person of the abnormal state is transmitted from the notification image storage unit 105 of No. 02 via the communication unit 53, and the notification means 61, 71 of each remote controller of the hot water equipment.
And the image is displayed on the display means 64 and 74 (step S38).

This alarm (step S38) is specifically made by, for example, voice information and a character image such as "please go to the bathroom". As a result, the abnormality information of the human body detected by the human body detection sensor 51 can be simultaneously issued to the kitchen as well as the bathroom.

This alarm signal is transmitted as shown in FIG. 8 via the communication section composed of the communication IC. That is, the voice storage unit 101 and the image storage unit 10 provided in the human body detection sensor 51.
2, the voice and the image data are called according to the above-mentioned signals and transmitted to the kitchen remote controller 70 via the analog and digital communication units 66 and 76, and the notification means 71 and the display means such as a speaker provided in the kitchen remote controller 70. Notification and display at 74. Image detection and processing is performed in each of the areas 2 described above.
Since it is performed every 9, 30, and 31, the response speed for notification and display will be accelerated.

Since the intercom is already in a call-enabled state, a bather who does not move but can speak is as long as he or she can speak in an emergency in an abnormal state without pressing the call button. It is convenient to be able to contact the family outside the bathroom immediately.

When the human body detection sensor 51 detects the movement of a person within a predetermined time after the notification of the operation request (step S3)
(No in 6), the bather can be inferred to be in good health, and the timer is canceled similarly to the above (step S44). At the same time, in response to the detection signal from the detection of the movement of the human body, the display of the stop image by the stop image display means 134 is canceled (step S45). After being released, the moving image may be displayed again on the display means 64, 74 of the remote controller. As a result, the state of the bathroom up to the alarm notification can be grasped from a remote place.

After the alarm is given, a family member rushes to the bathroom and rescues. The notification and the cancellation of the stop image display may be performed by, for example, turning off the operation switch 129 (step S39).

Next, the stop of the monitoring function of the human body sensor will be described. The monitoring function stop selecting means 140 for stopping the monitoring mode is incorporated as software in the microcomputer of the control device 7 described above. The monitoring mode includes a human body movement stop detection mode following the entry detection mode for detecting that a person has entered the room. The monitoring function stop selection unit 140 may stop the monitoring only in the human body motion stop detection mode for detecting the motion of the human body and detecting the stop of the motion. Further, the control device 7 is programmed with a monitoring function stop selection canceling means 141 for canceling the monitoring function stop selection as software.

FIG. 17 is a flow for stopping the monitoring function. In operation, first, the operation switch 129 provided on the bath remote controller 60 of the hot water equipment 40 is turned on (step S51).

Next, the setting switch 126 provided on the bath remote controller 60 shown in FIG. 14 is appropriately pressed to select the setting screen for the monitoring function (step S52). Each time this setting switch is pressed, the screen setting can be confirmed and the screen can be switched. The selection screen of the monitoring function is the screen of FIG. 14 (step S53). From the display items on this display screen, whether to continue or stop the monitoring function is selected by pressing one of the selection switches 127 and 128 (step S54).

When selecting the stop of the monitoring function, the selection switch 128 on the lower side may be pressed. By the output signal of this switch, the monitoring function stop selection means 14 of the control device 7
0 operates and the monitoring function is stopped (step S5).
5).

The flow shown in FIG. 20 is a flow chart showing the flow upon detection of entry into a room when the monitoring of the human body movement stop detection mode is stopped. First, when the stop of the monitoring function is selected as described above (Yes in step S56), it is determined that the succeeding bather has entered the bathroom by detecting the human body detection sensor 7 in the entrance detection mode. When this is done (Yes in step S57), the voice data is called from the stop notification voice storage unit 109, and the bath remote controller 60 is notified by voice via the communication IC (step S58). Specifically, it is supposed to notify by a voice saying "Monitoring is stopped". At the same time, the image data is called from the monitoring stop display image storage unit 1061 and similarly displayed as an image on the display means 64 of the bath remote controller 60 via the communication IC (step S59). FIG. 18 shows an example in which the fact that the monitoring is stopped is displayed in characters on the display means 64. Not only the bath remote controller 60 but also the kitchen remote controller 70 may be notified. Thereby, the subsequent bather can recognize that the monitoring is stopped.

Next, in FIG. 20, after some time elapses, a display for promoting the stop release is displayed on the display means 64 of the bath remote controller 60 (step S60). Specifically, the image data is called from the monitoring stop release promotion display image storage unit 1062, and similarly, the image data is displayed on the display means 64 of the bath remote controller 60 via the communication IC. FIG. 19 shows a specific example of the display for promoting the release of the monitoring stop, and is displayed on the display means by the characters "start / stop" indicating whether to start the operation or stop the operation. Is displayed.

Then, the bather decides whether or not to cancel the stop according to the above-mentioned prompt display for canceling the stop.
To cancel the monitoring stop, for example, the operation switch 129 of the remote controller is turned on. When it is desired to stop the monitoring, the operation switch 129 is turned on (in the case of YES in step S61) to cancel the monitoring stop by the monitoring function stop selection releasing means 141 (step S62), and thereafter, the movement of the human body is stopped. The detection becomes possible (step S63).

Next, in step S60, if it is not desired to stop monitoring (NO in step S61), the operation switch 129 may be left as it is without being turned on. When a certain time has passed (step S6
4) The display returns to the monitoring stop display described above (step S65). In this case, the human body detection sensor does not operate, and the motion stop of the human body is not detected.

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. Further, although the system bathroom has been described in the present embodiment, the present invention is not limited to this example, and the system bathroom can be installed in other existing bathrooms. Furthermore, the human body detection sensor is C
A CD camera may be used. Further, although the human body detection sensor and the notifying means are connected by wire, they may be connected by wireless.

[0075]

INDUSTRIAL APPLICABILITY As described above, according to the present invention, by utilizing the remote controller for the bath of the hot water equipment, the setting switch and the selection switch provided in the remote controller are utilized, and the separate switch is not provided. It is possible to stop the monitoring function without requiring complicated work. In addition, the present invention not only can stop the monitoring function, but can also display that the monitoring is stopped when entering the room, which gives a sense of security to subsequent bathers.
Further, according to the present invention, by calculating the actual amount of movement, detecting the movement of the human body, and determining whether the person has entered the room, the human body can be reliably detected and displayed, and there is no risk of shifting to a bath or the like without displaying anything. It is a thing. Further, according to the present invention, the bather following the bath turns on by the stop release prompting display, so that there is no possibility of shifting to bathing while the monitoring is stopped.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.

FIG. 2 is a block diagram of an electric circuit showing an embodiment of the present invention.

FIG. 3 is a circuit diagram showing a configuration of an image core circuit that constitutes one pixel of an image detection unit of a human body detection sensor.

FIG. 4 is an explanatory diagram showing a relationship between an image pickup range of a sensor, a detection range, and a detection region.

FIG. 5 is a flowchart showing an embodiment of the present invention.

FIG. 6 is a flowchart showing a flow of human body monitoring of the present invention.

FIG. 7 is a block diagram showing an embodiment of the entire apparatus of the present invention.

FIG. 8 is a block diagram showing another embodiment showing a communication relationship.

FIG. 9 is a block diagram showing an outline of a storage unit.

10A is a diagram showing a current image and a previous image of an object moved to the lower right, FIG. 10B is a diagram showing brightness and darkness of the previous image for each pixel, and FIG. It is a figure which shows the brightness of an image for every pixel.

FIG. 11 is a diagram showing a difference image showing a change in lightness and darkness in a pixel corresponding to an image boundary.

FIG. 12 is an electric circuit block diagram showing one embodiment.

FIG. 13 is a flowchart of human body monitoring showing an embodiment.

FIG. 14 is an electrical block diagram showing another embodiment.

FIG. 15 is an electric block diagram showing another embodiment of the present invention.

FIG. 16 is an electrical block diagram showing an embodiment of the present invention.

FIG. 17 is a flowchart of a monitoring function stop operation according to the embodiment.

FIG. 18 is an example of display on a display unit according to an embodiment.

FIG. 19 is an example of display on a display unit according to an embodiment.

FIG. 20 is a flowchart showing monitoring stop display and the like according to an embodiment.

[Explanation of symbols]

1 bathroom 2 bathtubs 3 washroom 4 doorways 5 human body sensor 6 Imaging device 7 Control device 24 area dividing means 26 Detection area 29 Entrance area 30 washroom area 31 Bath area 32 Judgment means 40 Hot water equipment 51 Human body detection sensor 52 infrared sensor 60 bath remote control 64 display means 70 kitchen remote control 109 Stop notification voice storage unit 111 Motion amount calculation means 140 Monitoring function stop selection means 141 Monitoring function stop selection canceling means

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shinji Narimasa             93 Edo-cho, Chuo-ku, Kobe-shi, Hyogo Stock Association             Company Noritsu F-term (reference) 2D032 GA00                 5C086 AA22 BA04 CA12 CA28 CB16                       CB21 CB36 DA20 DA33 EA36                       EA45

Claims (4)

[Claims] 1. A room entry detection mode for detecting that a person has entered a room, a human body motion stop detection mode for detecting a motion of a human body and a motion stop, a room entry detection mode and a human body motion stop detection mode. In the human body detecting device having the monitoring mode, the monitoring function stop selecting means for stopping the monitoring mode is provided, and the monitoring function stop selecting means is a setting switch for changing the display screen such as hot water temperature provided on the remote controller. A human body detection device characterized by being selected by a selection switch for selecting a display item on a display screen. 2. A human body detection apparatus comprising a human body movement detection mode for detecting that a person has entered the room and a human body movement stop detection mode for detecting movement of the human body and detecting movement stoppage. Monitoring function stop selection means for stopping the monitoring of and the selection switch for selecting the monitoring function stop selection means are provided, and when the selection switch is selected A human body detection device characterized in that a display means is provided for displaying that the monitoring is stopped when detected. 3. An image pickup device for picking up an image of a monitoring area at a predetermined time interval, a motion amount calculation means for calculating a motion amount of a human body as a difference in light receiving amount by comparing both images before and after the predetermined time interval, and the motion amount. A human body detection sensor having a calculation means, a motion presence / absence determination means for determining the presence / absence of movement by a motion amount calculation means, an entry detection mode for detecting that a person has entered the room by the human body detection sensor, and a movement presence / absence determination means. In a human body detection device comprising a human body movement stop detection mode for detecting movement of the human body and detecting movement stop,
A monitoring function stop selection means for stopping the monitoring of the human body motion stop detection mode and a selection switch for selecting the monitoring function stop selection means are provided, and when the selection switch is selected, A human body detection device characterized in that it is provided with a display means for displaying that the monitoring is stopped when an entrance is detected in the room detection mode. 4. An image pickup device for picking up an image of a monitoring area at a predetermined time interval, a movement amount calculation means for calculating a movement amount of a human body as a difference in received light amount by comparing both images before and after the predetermined time interval, and the movement amount. A human body detection sensor having a calculation means, a motion presence / absence determination means for determining the presence / absence of movement by a motion amount calculation means, an entry detection mode for detecting that a person has entered the room by the human body detection sensor, and a movement presence / absence determination means. In a human body detection device comprising a human body movement stop detection mode for detecting movement of the human body and detecting movement stop,
A monitoring function stop selection means for stopping the monitoring of the human body motion stop detection mode and a selection switch for selecting the monitoring function stop selection means are provided, and when the selection switch is selected, It is characterized in that display means is provided for displaying that the monitoring is in a stopped state when an entrance is detected in the room detection mode, and a stop release promotion display for promoting release of the monitoring stop after the stop display is displayed on the display means. Human body detection device.