JP2004021285A - Human body abnormality detection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a human body abnormality detection device which does not produce false detection by disposing a leaving-the-room indication means for transmitting leaving-the-room information by the operation of a person subject to detection himself. <P>SOLUTION: The human body abnormality detection device has a microphone 3a for detecting sounds in a bath room 2; an infrared ranging sensor 3b for detecting entrance into the bath room 2; and abnormality decision means 140a, 140b which detect the person subject to detection with the infrared ranging sensor 3b to start monitor operation, and makes a decision on the abnormal action status of the person subject to detection based on sound information detected with the microphone 3a. The human body abnormality detection device has an operation switch 6a which indicates the leaving-the-room of the person subject to detection and an output part 6b which outputs the leaving-the-room information, and an exit/entrance panel 6 is provided which indicates the leaving-the-room of the person subject to detection from a space subject to detection. The abnormality decision means 140a, 140b terminates making a decision on the abnormality action status based on the leaving-the-room information outputted from the output part 6b. Thereby, the abnormality can be detected without producing false detection. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a human body abnormality detection device that detects an abnormal operation state of a detected person in a detection space, and particularly relates to termination of detection of an abnormal operation state.
[0002]
[Prior art]
Conventionally, as a human body abnormality detection device of this type, for example, a product called “watching good” which is a product name of Nippon Signal Co., Ltd. is known. This product monitors the movement of the detected person in the bathroom or toilet as a detection space, and when the detected person can not move, asks the detected person with `` Is it okay? '' This is a device for notifying a message or the like and, if there is no response, notifying a family member in another room of an abnormality of a detected person in the detection space.
[0003]
Specifically, a detection sensor that emits infrared light and detects light reception due to its reflection is provided in the detection space and in the vicinity of the entrance to the detection space, respectively. It is configured to detect entry and exit.First, the sensor provided near the entrance and exit detects the entry of the person to be detected into the detection space, thereby activating the sensor for detecting the movement of the operation provided in the detection space. I try to make it. Then, when the detected person detects the exit from the detection space, the operation of the sensor for detecting the movement of the operation is stopped.
[0004]
[Problems to be solved by the invention]
However, those that detect a person to be detected by infrared rays that receive and emit light can be automatically detected and have high detection accuracy, but, for example, when a pet or the like approaches an entrance, detection of entering and leaving the room without being noticed by the person to be detected. May be erroneously detected. As a result, there is a problem in that the operation of the sensor for detecting the movement of the operation is stopped and the monitoring of the abnormality cannot be detected even though the detected person is present in the detection space.
[0005]
In view of the above, an object of the present invention is to provide a means for detecting an anomaly in a human body that does not cause erroneous detection by providing an exit instruction means for transmitting exit information by an operation of the detected person. An apparatus is provided.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the technical means described in claims 1 to 4 are adopted. That is, according to the first aspect of the present invention, the detection means (3a) for detecting a sound in the detection space, the entry detection means (3b) for detecting the entry of the subject into the detection space, and the detection of the entry The means (3b) detects the detected person and starts the monitoring operation, and based on the sound information detected by the detecting means (3a), the abnormality determining means (140a, 140b) comprising the steps of:
An operation unit (6a) for instructing a detected person to exit and an output unit (6b) for outputting exit information based on the exit instruction from the operation unit (6a), and exiting from the detection space of the detected person. Is provided, and the abnormality determination means (140a, 140b) terminates the determination of the abnormal operation state based on the exit information output from the output unit (6b). Features.
[0007]
According to the first aspect of the present invention, there is provided an exit instruction means (6) which has an operation section (6a) and an output section (6b), and instructs exit from the detection space of the detected person. By detecting the exit information output in (6b) and ending the determination of the abnormal operation state, the monitor can be surely ended by the operation of the detected person himself / herself. Therefore, it is possible to detect the end of the monitor based on the will of the detected person more reliably than in the case where the detection and exit of the detected person is automatically detected by using the conventional infrared light receiving and emitting, without causing erroneous detection.
[0008]
Further, by configuring the exit instruction means (6) with the operation section (6a) and the output section (6b), for example, when a dry battery or the like is used as the power supply of the output section (6b), the electric wiring can be made wireless. Therefore, the size and weight can be reduced, and the installation work can be simplified.
[0009]
In the invention described in claim 2, the exit instruction means (6) is provided outside the detection space near the entrance that enters and exits the detection space, and the output section (6b) detects the detection means (when the entrance is open). It is characterized in that the room exit information is a sound or a voice outputted in 3a).
[0010]
According to the second aspect of the present invention, when the entrance is open, the exit unit (6b) outputs the exit information by sound or voice, for example, several KH. _Z In the case of non-audible frequency bands such as ultrasonic waves including the above-mentioned frequency bands, if the entrance is closed, even if a person other than the person to be detected operates the operation unit (6a), it is easily attenuated by a wall or the like. Since the detection is difficult in 3a), erroneous detection can be prevented.
[0011]
In the invention according to claim 3, the exit instruction means (6) is provided in the detection space, and the abnormality determination means (140a, 140b) operates abnormally for a predetermined time after instructing the operation section (6a). It is characterized in that the determination of the abnormal operation state is terminated after the determination of the state is continuously performed.
[0012]
According to the third aspect of the present invention, when provided in the detection space, after instructing the operation unit (6a), the monitor is continued for a predetermined time, and it is confirmed that the room has been exited normally. By ending the monitor from, even if an unexpected accident occurs after operating the operation unit (6a), the accident can be detected and the alarm means can be executed and the alarm can be surely notified, and more secure human body abnormality detection Equipment can be provided.
[0013]
In the invention described in claim 4, the abnormality determining means (140a, 140b) detects that the sound information is substantially silent for a predetermined time, and determines that the abnormal operation state of the detected person is determined. Features.
[0014]
According to the invention as set forth in claim 4, by detecting that the subject is in a substantially silent state and determining the abnormal operation state of the subject, the reverberation sound in the closed space or the narrower space in the sound is reduced. Sound that is loud and invades from outside the detection space is easily attenuated by propagation in the air or permeation on the wall surface. In particular, when the present invention is applied to a dark room or a bathroom where steam is generated, the detection accuracy is superior to that of an image using a camera.
[0015]
Note that the reference numerals in parentheses of the above means indicate the correspondence with specific means of the embodiment described later.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
(1st Embodiment)
Hereinafter, a first embodiment of the human body abnormality detection device of the present invention will be described with reference to FIGS. First, FIG. 1 is a mounting explanatory diagram of a human body abnormality detection device 1 in which the present invention is applied to a bathroom 2 as a detection space.
[0017]
The human body abnormality detection device 1 includes a remote control panel 3 installed on a wall surface in a bathroom 2 which is a detection space, an operation panel 4 installed in a living room (not shown) outside the bathroom 2 or a living room where a person always exists, such as a kitchen. And an entrance / exit panel 6 which is exit instruction means installed near the entrance / exit of the bathroom 2.
[0018]
The remote control panel 3 includes a microphone 3a that is a detection unit for monitoring an acoustic waveform as sound information in the bathroom 2, and a distance measurement unit that detects a distance to a detected person as an example of a room entry detection unit. There is provided an infrared distance measuring sensor 3b and a notifier 3c for notifying a detected person by a generated signal such as voice.
[0019]
In addition, the infrared distance measuring sensor 3b of this embodiment is a sensor for detecting entry when the detected person enters the bathroom 2, and as shown in FIG. 1, the bathroom door 2a, the washing place 2b, It is good to attach to the wall surface arranged in order of bathtub 2c. In addition, when it is other than this wall surface, it is preferable to arrange it at a position where the irradiation direction can be freely adjusted toward the bathroom door 2a.
[0020]
In addition, in the present embodiment, the notifying device 3c is a notifying unit that notifies the detected person with an audio signal such as “Is it okay?” Further, the microphone 3a is configured to input a voice uttered by the detected person and output the voice to a loudspeaker 4b described later, and the annunciator 3c is a loudspeaker that outputs a voice from a second microphone 4d described later. It has a function, so that a call can be made inside and outside the bathroom 2.
[0021]
Next, the operation panel 4 includes an operation switch 4a for activating a human body abnormality detection device, a loudspeaker 4b as an alarm unit for alarming an abnormality to the outside when an abnormality occurs in a detected person in the bathroom 2, and A release switch 4c for releasing the warning means of the loudspeaker 4b;
A second microphone 4d for talking with the inside of the bathroom 2 and a call switch 4e are provided. In the loudspeaker 4b, the sound pressure level value of the alarm sound is set to at least two levels: a low level and a high level.
[0022]
Next, the operation panel 4 is provided with a control as control means for controlling the annunciator 3c and the loudspeaker 4b based on the sound input from the microphone 3a and the infrared distance measuring sensor 3b and the signal input relating to the movement of the body. A device 5 is provided. The control device 5 includes a microcomputer or the like therein, and the microcomputer has a CPU, a ROM, a RAM, and the like (not shown), and is operated by an operation input of an operation switch 4a of the operation panel 4. It is.
[0023]
The control device 5 is further provided with a first band-pass filter 5a as first filter means and a second band-pass filter 5b as second filter means.
[0024]
The first bandpass filter 5a detects sound generated in the bathroom 2 by the microphone 3a, and uses the bandpass filter to specify a specific frequency component, for example, 2000 to 6000H. _Z 5000H _Z , 6000H _Z This is a filter that extracts only,, etc. The specific frequency component to be extracted may be extracted by switching at least two or more components, or may be extracted simultaneously, and the presence or absence of a predetermined sound may be detected based on the absolute level of the extracted frequency component.
[0025]
On the other hand, the second band-pass filter 5b converts the voice of the detected person input to the microphone 3a into, for example, 2000 to 6000H when talking between the detected person and the outside of the bathroom 2. _Z This filter removes or attenuates a specific frequency component, and thereby removes or attenuates sound cracks or harsh sounds due to reverberation or resonance in the bathroom 2 to produce a clear sound.
[0026]
Next, the entrance / exit panel 6 which is an operation instructing means which is a main part of the invention is provided with an exit switch 6a which is an operation unit for the detected person to instruct the exit when leaving the bathroom 2, and by operating the exit switch 6a. It comprises an output section 6b for outputting exit information and a dry cell 6c as a power supply for the output section 6b. Therefore, the output panel 6 outputs the exit information by the user's own operation on the intention of the detected person to exit.
[0027]
Incidentally, the output unit 6b is for outputting a sound or a voice as a signal sound as the room exit information to be detected by the microphone 3a of the operation panel 4, and when the bathroom door 2a of the bathroom 2 is open, the microphone 3a Are configured to detect a signal tone. Therefore, when the bathroom door 2a is closed, even if a person other than the detected person operates the operation switch 6a to output a signal sound from the output unit 6b, the microphone 3a is attenuated by the bathroom door 2a and the bathroom wall. It makes it difficult to detect.
[0028]
Specifically, the signal tone is several KH _Z It is desirable that the sound is output as a non-audible frequency band such as an ultrasonic wave including the above-mentioned frequency band, because the microphone 3a becomes difficult to detect when the bathroom door 2a is closed. May be superimposed on a sound that the subject can clearly hear. Further, since the output section 6b can be constituted by a loudspeaker (not shown) and its transmission circuit, the output section 6b can be provided by a power source such as the dry cell 6c as these power sources. Thereby, the doorway panel 6 can be configured without the need for electrical connection between the remote control panel 3 and the operation panel 4, and does not require extensive installation work.
[0029]
Next, the operation of the human body abnormality detecting device 1 having the above configuration will be described based on the flowchart of the control process of the control device 5 shown in FIGS. FIG. 2 shows a control process of determining an abnormal operation state such as when a subject stops moving due to a cardiac arrest or the like in a bathroom 2 which is a detection space, and issues an alarm. FIG. 3 is a control process for ending the determination of the abnormal operation state by operating the exit switch 6a indicating the exit behavior of the detected person from the bathroom 2 himself.
[0030]
First, when the operation switch 4a is turned on and power is supplied to the control device 5 before the detected person enters the bathroom 2, the main routine shown in FIG. 2 is started. Then, in step 100, the storage contents of the data processing memory (RAM) are initialized. In step 110, which is next room presence determination means, it is determined whether or not the detected person has entered the bathroom 2 by detecting the entry from the infrared distance measuring sensor 3b. Here, when the detected person enters the bathroom 2, the monitoring is started in step 130.
[0031]
Then, in step 310, a second timer (for example, about 20 to 30 seconds) that does not detect a single sound such as a door that closes violently, and a third timer (T5, for example, for counting the generation interval of the detection sound) The counting of a fifth timer (T1, for example, about 1 minute) for counting the silent state until asking the detected person about the presence or absence of an abnormality is started.
[0032]
In the next step 320, hot water supply operation information determining means for determining whether a hot water supply device (not shown) is operating or stopped to supply hot water into the bathroom. The apparatus is operated, and if there is no hot water supply signal, the hot water supply apparatus is stopped.
[0033]
If there is no hot water supply signal, the process proceeds to step 330, where the first threshold value (L1) for determining the presence or absence of the sound after the extraction of the specific frequency component by the band-pass filter 5a and the first timer for determining the duration of the sound. A third predetermined time (T3), which is a time setting, is set. If there is a hot water supply signal, in step 340, a second threshold (L1) and a sixth predetermined time (T6) larger than the first threshold (L1) and the third predetermined time (T3) are set.
[0034]
Here, the first threshold value (L1) and the third predetermined time period (T3) are representative sounds generated in the bathroom 2 and, in addition, sounds generated by moving hot water when the body is moved in the bathtub and sounding as a chop. The sound of the vehicle running outside the bathroom, the sound of closing the door violently near the bathroom 2, the sound of the shower head hanging on the rack and pouring into the washing area, holding the shower head in hand It is required not to be confused by the sound of taking a shower on the body, and is to detect a sound generated in the bathroom 2 accompanying the motion of the detected person.
[0035]
The second threshold value (L1) and the sixth predetermined time period (T6) are determined by inputting hot water supply operation information indicating that the hot water supply device is operating and stopping from the hot water supply device (not shown) to the control device 5, It was detected whether the shower or faucet etc. was kept open by determining whether or not hot water was supplied inside, specifically, the person to be detected dipped hot water in the bathtub, Since the sound in the bathroom 2 is different when a hot water supply operation is performed by opening a faucet or shower such as taking a shower in a washing place, the threshold value and the predetermined time are changed.
[0036]
Next, the process proceeds to step 140a of the abnormality determining means for determining the abnormal operation state of the detected person, and determines whether or not the value is equal to or more than the set first or second threshold value (L1, L2). If it is equal to or more than the first or second threshold value (L1, L2), the process further proceeds to an acoustic determination routine 400 for determining whether or not the detected sound is the action sound of the detected person in the bathroom 2. On the other hand, if it is equal to or less than the first or second threshold value (L1, L2), the processing shifts to the processing routine 500 at the time of abnormality.
[0037]
When the detected sound becomes equal to or larger than the first or second threshold value (L1, L2), the count of the first timer for determining the duration of the sound is started at step 410 to confirm the duration of the sound. Next, in step 420, it is determined whether or not the first timer has timed out the set third or sixth predetermined time (T3 or T6). If the time is not up, the process returns to step 310 to repeat the sound detection again. On the other hand, when the time is up, the flow shifts to step 430 to determine whether or not the one-shot sound is invalidated by the second timer.
[0038]
Here, when the second timer has not timed out, that is, when the silence period is relatively short, the activity in the bathroom is active, and the movement of the detected person in the bathroom should be accompanied. Even if a part of the unrecognized sound is detected, there is no problem from the detection of the abnormality of the human body. Therefore, the process proceeds to step 450, and the second, fifth, sixth, and seventh timers are reset. That is, it is set here that the detected person is acting.
[0039]
If the second timer times out at step 430, the detected person has stopped operating for a while. Therefore, if the operation stoppage is due to some unexpected accident, for example, if an external sound is detected and it is determined that the detected person is operating, the alarm is delayed. For this reason, in order to exclude a spontaneous sound that has been accidentally detected for some reason, a reconfirmation is performed in the next step 440.
[0040]
That is, in step 440, since the third timer has last detected a detection sound longer than the first or second threshold (L1, L2) and longer than the third or sixth predetermined time (T3 or T6). The time, that is, the detection sound generation interval is determined. Here, if the third timer has expired, step 450 is not executed as a single sound (without resetting the second, fifth, sixth, and seventh timers), in other words, the detected person Is determined not to be operating, and only the reset of the first and third timers in step 460 is executed.
[0041]
Next, the process proceeds to steps 470, 480 and 490. In these steps, once a detected sound longer than the first or second threshold (L1, L2) and longer than the third or sixth predetermined time (T3 or T6) is detected, the fourth predetermined time (T4, for example, 1 Next, the next sound detection is stopped. This is because even if it is a single sound when closing the door violently, even if it is analyzed at a very short time level, it will be a group of multiple sounds with several peak values, so to capture them as one sound Execute. Thereafter, the process returns to step 310 to repeat sound monitoring.
[0042]
Next, the processing routine 500 at the time of abnormality will be described. First, in step 510, the first timer for duration determination is reset. Next, the process proceeds to step 140b of the abnormality determining means, and the duration of the silent state is confirmed by the fifth timer. Here, if the fifth timer has not expired, it is determined that an abnormal state has not been reached, and the process returns to step 310 to repeat sound monitoring.
[0043]
On the other hand, when the fifth timer has expired, the process proceeds to step 150a, which is the next notification means, and an abnormal signal is given to the subject by a voice signal such as "Is it okay?" And the start of counting by the sixth timer for the response time waiting time for the inquiry. Since the interrogation is performed intermittently, the detection of sound is interrupted during the interrogation, and the response from the detected person may be determined between the interrogations.
[0044]
Note that it is assumed that a specific frequency component to be extracted by the first band-pass filter 5a from the audio signal used for this interrogation is removed or attenuated in advance. Thus, the sound of the question in the bathroom is not erroneously determined to be the operation sound of the detected person, and accurate sound information can be obtained even during the notification.
[0045]
Next, the process proceeds to step 160a, which is a response determination unit, and determines whether there is a response from the detected person. Here, if there is a response before the expiration of the sixth timer, the process returns to step 310 to repeat sound monitoring. If there is a response here, it is determined in the above-described sound determination routine 400, and it is determined that the sound is normal.
[0046]
When the time of the sixth timer expires, it is determined that there is no response from the detected person in the sixth predetermined time (for example, about ten and several seconds), and the process proceeds to step 180 as an alarm unit. In this step 180, while continuing to ask the detected person, a person in the living room outside the bathroom 2 is warned that an abnormality has occurred in the detected person. This warning is to generate a warning sound by the loudspeaker 4b with an output signal of a small level as an initial stage. At the same time, the counting of the seventh waiting timer (for example, about ten and several seconds) for determining whether or not the action by the alarm has been performed is started.
[0047]
Then, when the time of the seventh timer in step 190a has expired, it is determined that no action has been taken for the abnormality of the detected person, and the flow shifts to step 200 as the next alarm means. In step 200, the subject is continuously questioned, and the person in the living room outside the bathroom 2 is continuously alerted to the fact that an abnormality has occurred in the subject with an output signal of a higher level than in step 180. Move to In step 210, it is determined whether or not a release operation has been performed with the release switch 4c. If there is no release operation, the process returns to step 200 to continue to issue an alarm, and if the release operation is performed, the process returns to step 100. The above is the control processing for determining the abnormal operation state of the detected person, which is the same as that described in Japanese Patent Application No. 2002-5972 previously filed by the inventors.
[0048]
Next, when the detected person leaves the bathroom 2, in the present embodiment, the detected person operates the exit switch 6 a of the entrance panel 6 to stop the monitor. In the control process of the control device 5 at this time, a signal sound is output as exit information from the output unit 6b of the entrance / exit panel 6 when the detected person operates the exit switch 6a. This signal sound is detected by the microphone 3a in the remote control panel 3 to terminate the determination of the abnormal operation state of the detected person.
[0049]
Specifically, as shown in FIG. 3, first, in step 600, the detected person opens the bathroom door 2a and operates the exit switch 6a. As a result, in step 610, the exit information is output from the output unit 6 b as a signal sound, for example, “Peen! Pong”. At this time, since the bathroom door 2a is open, the microphone 3a in the bathroom 2 detects this signal sound.
[0050]
In the next step 620, it is determined whether or not there is a sound signal as exit information. If there is a sound signal, the monitor is stopped in step 630. Thus, the determination of the abnormal operation state ends. However, when the exit switch 6a is operated after closing the bathroom door 2a, when the sound signal output from the output unit 6b cannot be detected by the microphone 3a, it is determined that there is no sound signal, and the monitor is determined in step 640. It is made to continue.
[0051]
However, at this time, since the detected person does not exist in the bathroom 2, it is determined that the sound is in a substantially silent state, and the alarm continues to be issued in step 200 through the above-described abnormal processing routine 500. Further, even when the detected person forgets to operate the exit switch 6a, the alarm is continuously issued in step 200 as described above.
[0052]
According to the human body abnormality detection device 1 of the first embodiment described above, the entrance panel 6 is provided with the operation switch 6a for instructing the exit of the detected person from the room and the output unit 6b for outputting a signal sound as the exit information. By detecting the signal sound output from the output unit 6b and terminating the determination of the abnormal operation state, the monitor can be surely terminated by the operation of the detected person himself / herself. Therefore, the detection based on the intention of the detected person can be performed without causing the erroneous detection, using the conventional infrared light receiving and emitting and detecting the leaving of the detected person automatically.
[0053]
In addition, by configuring the entrance panel 6 with the operation switch 6a and the output unit 6b, for example, when a dry cell 6c is used as the power source of the output unit 6b, the electric wiring can be made wireless, so that the size and weight can be reduced, and the installation is possible. The simplification can be achieved so that even an layman can install it.
[0054]
When the bathroom door 2a is open, the output unit 6b outputs the exit information by a signal sound, for example, by several KH. _Z In the case of a non-audible frequency band such as an ultrasonic wave including the above frequency band, if the bathroom door 2a is closed, even if a person other than the person to be operated operates the operation switch 6a, it is attenuated by the bathroom door 2a and the bathroom wall. Therefore, erroneous detection can be prevented since the microphone 3a does not easily detect the erroneous detection.
In addition, by detecting that the subject is in a substantially silent state by the microphone 3a and determining the abnormal operation state of the subject, in the closed space or in the narrow space, the reverberation sound becomes larger in the closed space and the outside of the detection space. Sound that invades from the air is easily attenuated by propagation in the air or transmission through the wall, so that the presence or absence of sound can be easily detected. In particular, when the present invention is applied to a dark room or a bathroom where steam is generated, the detection accuracy is superior to that of an image using a camera.
[0055]
(2nd Embodiment)
In the above-described first embodiment, the entrance / exit panel 6 serving as the exit instruction means is provided near the entrance / exit of the bathroom 2. However, the present invention is not limited to this, and the entrance / exit panel 6 may be provided in the bathroom 2 or a remote control panel installed in the bathroom 2. 3 may be provided.
[0056]
Further, an output section 6b is provided in the entrance panel 6, and a signal sound is output as exit information output from the output section 6b, but an exit signal is electrically connected as exit information based on an instruction of the operation switch 6a. May be output to the control device 5. Specifically, as shown in FIG. 4, an operation switch 6a as an operation unit is provided in the remote control panel 3, and the operation switch 6a is connected so that a leaving signal from the operation switch 6a is output to the control device 5. However, at this time, if the determination of the abnormal operation state ends immediately after the detected person operates the operation switch 6a, it is possible to detect an abnormality such as a fall until the detected person leaves the bathroom 2. There is a problem that goes away.
[0057]
Therefore, in the present embodiment, a control process for determining whether or not the bathroom 2 has reliably left after the detected person has operated the operation switch 6a is provided. Specifically, as shown in FIG. 5, when the detected person's exit switch 6a is turned on (step 700), in step 710, the eighth predetermined time (T8) of the eighth timer and the ninth time of the ninth timer are determined. The predetermined time (T9) is reset, and the monitor termination processing is started.
[0058]
Next, the process proceeds to step 720 to determine the presence or absence of an acoustic signal. If there is no sound signal, the process proceeds to step 730 to start counting of the eighth timer. If the time of the eighth timer has not expired in the next step 740, the process returns to step 720 and waits for detection of the sound signal. . If the eighth timer has expired, the room has not been exited normally. That is, it is determined that the operation state is abnormal, and the alarm unit is executed in step 200.
[0059]
On the other hand, when an acoustic signal is detected in step 720, the process proceeds to step 760, and an inquiry such as “has you left the room” is made, and the process proceeds to step 770. The acoustic signal detected in step 720 is, for example, a sound generated when the bathroom door 3a is opened, and is determined to be a normal exit. Then, in step 770, it is determined whether or not there is a response. The response may be a sound generated when the opened bathroom door 3a is closed. Alternatively, a voice such as "I came out" may be used. If there is no response in step 770, the process proceeds to step 780 to start counting by the ninth timer. If the time in the ninth timer has not expired in the next step 790, the process returns to step 770 and Wait for a response from the detector. If the ninth timer has expired, the room has not been exited normally. That is, it is determined that the operation state is abnormal, and the alarm unit is executed in step 200. If there is a response in step 770, it is determined that the room has been exited normally, and the monitor is terminated in step 630.
[0060]
According to the above-described embodiment, even after the exit switch 6a is operated, the monitor is continued for a predetermined time, and after confirming that the exit is normal, the monitor is terminated. Even if an unexpected accident occurs later, the accident can be detected, alarm means can be executed and the alarm can be reliably notified, and a safer human body abnormality detection device can be provided.
[0061]
(Other embodiments)
In the above embodiment, step 150a, which is the notification means, is queried to the detected person in the bathroom 2 by an audio signal, but may be notified as a warning sound. In addition, the warning sound may be emitted outside the bathroom 2. As a result, it is possible to make sure that a person existing outside the bathroom 2 is informed of an abnormality in advance.
[0062]
In the above-described embodiment, the infrared distance measuring sensor 3b, which is a distance measuring unit that detects a distance to the detected person, has been described as the room detecting unit that detects the entering of the detected person into the bathroom 2. However, the present invention is not limited to this, and it may be possible to detect entry of the detected person by detecting a manual switch for starting the monitor, an opening / closing signal of the bathroom door 2a, a passing signal of the detected person, a lighting switch of the bathroom 2, and the like. Further, in the bathroom 2, the entrance of the detected person may be detected by detecting a start signal of a shower or a flowing water of a hot water faucet provided in the bathroom.
[0063]
In addition, the sound of the detected person input to the microphone 3a is removed or attenuated by the second band-pass filter 5b, and is output from the loudspeaker 4b. Sound cracking or harsh sound due to sound or the like is removed or attenuated, and a clear sound can be obtained.
[0064]
Further, the microphone 3a, the infrared distance measuring sensor 3b, and the alarm 3c are provided in the remote control panel 3, but may be built in a remote control panel such as a hot water supply device for supplying hot water to the washing place 2b or the bathtub 2c. Thereby, the additional function of the water heater is improved.
[0065]
Further, in the above embodiment, the human body abnormality detecting device 1 applied in the bathroom 2 has been described. However, the present invention is not limited to this, and the detection space for human body abnormality detection according to the present invention may be a washroom, a toilet, or The present invention may be applied to a living room, such as a geriatric room, for a subject requiring care.
[Brief description of the drawings]
FIG. 1 is a mounting explanatory view showing an overall configuration of a human body abnormality detection device 1 according to a first embodiment of the present invention.
FIG. 2 is a flowchart illustrating a control process of a control device 5 according to the first embodiment of the present invention.
FIG. 3 is a flowchart showing a control process for ending the determination of an abnormal operation state of the control device 5 according to the first embodiment of the present invention.
FIG. 4 is a mounting explanatory view showing the entire configuration of the human body abnormality detection device 1 according to the first embodiment of the present invention.
FIG. 5 is a flowchart illustrating a control process for ending the determination of an abnormal operation state of the control device 5 according to the second embodiment of the present invention.
[Explanation of symbols]
2. Bathroom (detection space)
3a: microphone (detection means)
3b: infrared distance measuring sensor (room entry detecting means)
6. Doorway panel (exit instruction means)
6a: Exit switch (operation unit)
6b ... output section
140a, 140b ... abnormality determination means

Claims (4)

Detection means (3a) for detecting sound in the detection space;
Entry detection means (3b) for detecting the entry of the detected person into the detection space;
An abnormality in which the detected person is detected by the entry detecting means (3b) and a monitoring operation is started, and an abnormal operation state of the detected person is determined based on the sound information detected by the detecting means (3a). A human body abnormality detection device including a determination unit (140a, 140b),
An operation unit (6a) for instructing a detected person to exit and an output unit (6b) for outputting exit information based on the exit instruction from the operation unit (6a), and exiting from the detection space of the detected person. Is provided, and the abnormality determination means (140a, 140b) terminates the determination of the abnormal operation state based on the exit information output from the output unit (6b). Characteristic human body abnormality detection device. The exit instruction means (6) is provided outside the detection space in the vicinity of an entrance that enters and exits the detection space, and the output section (6b) outputs sound to the detection means (3a) when the entrance is open. The human body abnormality detection device according to claim 1, wherein the room exit information is voiced. The exit instruction means (6) is provided in the detection space, and the abnormality determination means (140a, 140b) continues to determine the abnormal operation state for a predetermined time after instructing the operation section (6a). The human body abnormality detection device according to claim 1, wherein the determination of the abnormal operation state is terminated after performing the operation. The said abnormality determination means (140a, 140b) detects that the said sound information is a substantially silent state for a predetermined time, and determines the abnormal operation state of a to-be-detected person, The Claims 1 thru | or 1 characterized by the above-mentioned. The human body abnormality detection device according to claim 3.

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