JP6711731B2 - Bath management system, bath management method, and computer program - Google Patents

Description

The present invention relates to a technique for managing bathing.

There is known a device that can grasp the whereabouts of a person in a bathroom. Conventionally, there has been proposed a device that distinguishes whether a user is in the bathtub or in the washroom based on a signal from a water level sensor that detects the water level in the bathtub (Patent Document 1).

JP, 2003-248880, A

It is necessary to more accurately grasp the whereabouts of people in the bathroom. It may be possible to take a picture of the inside of a bathtub with a camera to grasp the whereabouts of a person, but privacy infringement becomes a problem.

The present invention has been made in view of such circumstances, and an object thereof is to provide a technique that can more accurately grasp the location of a person in a bathroom while ensuring privacy.

In order to solve the above problems, a bathing management system according to an aspect of the present invention includes a bathing management including at least one sensor for detecting the presence of a person in a detection range, and a controller connected to the sensor. In the system, the control device includes a whereabouts determination unit that repeatedly determines whether a person is in the bathtub, the washroom, or the outside of the bathroom based on a signal from the sensor.

According to the present invention, it is possible to provide a technique capable of more accurately ascertaining the whereabouts of a person in a bathroom while ensuring privacy.

It is a schematic diagram which shows the use condition of the bathing management system which concerns on 1st Embodiment. It is a block diagram which shows the function and structure of the control apparatus of FIG. It is a flowchart which shows operation|movement of the bathing management system of FIG. It is a schematic diagram which shows the use condition of the bathing management system which concerns on 2nd Embodiment. It is a block diagram which shows the function and structure of the control apparatus of FIG. It is a flowchart which shows operation|movement of the bathing management system of FIG.

Hereinafter, the same or equivalent constituent elements and members shown in each drawing will be denoted by the same reference numerals, and duplicative description will be appropriately omitted. In addition, the dimensions of the members in each drawing are appropriately enlarged or reduced for easy understanding. Further, in each drawing, some of the members that are not important for explaining the embodiment are omitted.

(First embodiment)
FIG. 1 is a schematic diagram showing a usage state of a bathing management system 100 according to the first embodiment. The bathing management system 100 includes a sensor 10 and a control device 20.

Only one sensor 10 is provided in the bathroom 2. The sensor 10 is a standing wave radar and measures a distance dx from the sensor 10 to a person in the detection range. Since the method of measuring the distance to the target (person) by the standing wave radar is publicly known, detailed description thereof will be omitted. The sensor 10 is connected to the control device 20 by wire or wirelessly. The signal output by the sensor 10 is transmitted to the control device 20. The sensor 10 may be a distance sensor other than the standing wave radar, but a distance sensor (radio wave sensor) that emits radio waves is preferable. This is because, in general, a radio wave passes through the door 2a of the bathroom 2 and thus the presence of a person outside the bathroom 5 can be detected even when the door 2a is closed. In addition, a wide directivity can be easily obtained, so that one sensor can easily sense the entire bathroom.

In the present embodiment, the sensor 10 is provided so as to satisfy the following conditions (a) to (d).
(A) The sensor 10 is installed in the order of the bath 3, the washing room 4, and the outside 5 of the bathroom so as to be farther from the sensor 10. Thereby, as described later, it is possible to determine whether a person is in the bathtub 3, in the washroom 4, or outside the bathroom 5 based on the distance dx from the sensor 10.
(B) The sensor 10 is installed so that the microwave from the sensor 10 penetrates the door 2a of the bathroom 2 and reaches the outside 5 of the bathroom. Accordingly, a person in the first area 5a (for example, a dressing room) outside the bathroom 5 adjacent to the bathroom 2 which is the detection range of the sensor 10 can be detected by the sensor 10 provided in the bathroom 2.
(C) The sensor 10 has a person who is drowning in the bathtub 3 or a person who has fallen down in the washing room 4 outside the detection range, and is in the washing room 4 who is submerged in the bathtub 3 in a non-drowning state or in a non-falling state. It is installed so that people are included in the detection range. This makes it possible to determine whether or not an abnormality has occurred in a person depending on whether or not the sensor 10 detects the abnormality.
(D) The sensor 10 is configured not to detect water in the bathtub 3. This can prevent the water accumulated in the bathtub 3 from being erroneously detected as a person.

In the example shown in FIG. 1, the bathroom 2 is configured such that the door 2 a and the bathtub 3 face each other with the washing space 4 interposed therebetween. Then, the sensor 10 is installed on the wall surface 2b facing the door 2a with the bath 3 and the washing area 4 interposed therebetween. As a result, the conditions (a) and (b) are satisfied. Further, the sensor 10 is installed at least above the bathtub 3 and with its emission surface 10a facing upward. As a result, the area A below the sensor 10 is outside the detection range of the sensor 10, and the conditions (c) and (d) are satisfied.

The control device 20 determines whether a person is in the bathtub 3, in the washroom 4, or outside the bathroom 5 based on the signal output by the sensor 10. Further, the control device 20 determines whether or not an abnormality has occurred in the person in the bathroom 2.

FIG. 2 is a block diagram showing the function and configuration of the control device 20. Each block shown here can be realized by an element such as a microcomputer or a CPU (central processing unit) of a computer or a mechanical device in terms of hardware, and by a computer program or the like in terms of software. Then, we are drawing the functional blocks that are realized by these collaborations. Therefore, it is understood by those skilled in the art who have touched the present specification that these functional blocks can be realized in various ways by a combination of hardware and software. The same applies to FIG.

The control device 20 includes a signal strength determination unit 21, a whereabouts determination unit 22, an abnormality determination unit 23, a registration unit 24, an abnormality time processing unit 25, a whereabouts information holding unit 26, a time information holding unit 27, including. The signal strength determination unit 21, the whereabouts determination unit 22, the abnormality determination unit 23, the registration unit 24, and the abnormality time processing unit 25 repeatedly execute their respective processes at a predetermined processing cycle.

The signal strength determination unit 21 determines whether the strength of the signal output by the sensor 10 is equal to or higher than a predetermined threshold value.

When the intensity of the signal output by the sensor 10 is equal to or higher than the threshold, the location determination unit 22 determines the location of a person based on the distance dx indicated by the signal (that is, the distance from the sensor 10 to the detected person) dx. Specifically, if the distance from the sensor 10 to the boundary between the bathtub 3 and the washing room 4 is d1, and the distance from the sensor 10 to the boundary between the washing room 4 and the bathroom outside 5 is d2, the whereabouts determination unit 22 dx≦ It is determined that the location where "d1" is established is "tub 3", the location where d1<dx≤d2 is "washing room 4", and the location where d2<dx is "outside bathroom 5".

If the intensity of the signal output by the sensor 10 is less than the threshold, the location determination unit 22 determines that the location of the person is “unknown (outside the detection range of the sensor 10)”. This is because when a person is outside the detection range of the sensor 10 and the sensor 10 does not detect the person, the intensity of the signal output by the sensor 10 becomes substantially zero or a relatively low value.

The whereabouts determination unit 22 registers the determined whereabouts of the person in the whereabouts information holding unit 26.

The whereabouts information holding unit 26 holds information indicating the whereabouts of the person determined by the whereabouts determination unit 22. In the present embodiment, the whereabouts information holding unit 26 stores the person's whereabouts (hereinafter, also referred to as “previous whereabouts”) determined by the whereabouts determination unit 22 in the previous processing cycle and the whereabouts determination unit 22 in the current processing cycle. It holds the whereabouts of the person determined by (hereinafter also referred to as “currently whereabouts”).

The time information holding unit 27 holds information about bathing time. The time information holding unit 27 holds the following information in association with each other.
・Identification ID
・Bathing date ・Total stay time in bathtub ・Continuous stay time in bathtub ・Total stay time in washroom ・Continuous stay time in washroom

The identification ID is an ID for uniquely identifying the information about the bathing time. The day of bathing is the day of bathing. The total stay time in the bathtub is the total time spent soaking in the bathtub once. The continuous bath time is the time of continuous immersion in the bath. The total stay time in the washroom is the total time spent in the washroom with one bath. The continuous stay time in the washroom is the time spent in the washroom continuously.

The registration unit 24 registers information regarding bathing time in the time information holding unit 27. Specifically, when the location determination unit 22 determines that a person is in the bathtub 3, the registration unit 24 stores the time T (for example, 0.1 seconds), which is the length of the processing cycle, in the time information storage unit 27. Accumulate the total stay time in the bathtub. In addition, when it is determined that the user is in the bathtub 3 in the previous processing cycle as well, the registration unit 24 integrates the time T into the bathtub continuous stay time, and determines that the user is not in the bathtub 3 (was in the washing place 4) in the previous processing cycle. If so, the time T is overwritten and registered in the bathtub continuous stay time.

In addition, when it is determined by the whereabouts determination unit 22 that the user is in the washroom 4, the registration unit 24 adds the time T to the total washroom stay time of the time information storage unit 27. In addition, the registration unit 24 adds the time T to the continuous stay time at the washing place when it is determined that the washing place 4 is still in the previous processing period, and does not stay in the washing place 4 (in the bathtub 3 or outside the bathroom 5 in the previous processing period). If it is determined that the time is T), the time T is overwritten and registered as the continuous stay time at the washing place.

Note that the registration unit 24, instead of registering (the length of) the time in the bathtub 3 or the washroom 4 in the time information holding unit 27, the time when the user entered the bathroom 2, the time when the user left the bathroom 2, and the time in the bathtub 3 were registered. Information indicating the entering time and the leaving time of the bathtub 3 may be registered in the time information holding unit 27.

The abnormality determination unit 23 determines whether or not an abnormality has occurred in a person. If the current location is “unknown” and the previous location is “outside the bathroom 5”, the abnormality determination unit 23 determines that no person has an abnormality. In this case, since a person has moved from the first area 5a outside the bathroom 5 to the second area 5b outside the bathroom 5 (for example, the area outside the dressing room, the area outside the bathroom 5 that is outside the detection range of the sensor 10), This is because it is thought that the whereabouts have become unknown.

Further, the abnormality determination unit 23 determines that an abnormality has occurred in a person if the current location is "unknown" and the previous location is "tub 3" or "washing room 4". In this case, since the whereabouts are unknown without going through the first area 5a outside the bathroom 5, the person moved to the second area 5b outside the bathroom 5 so that it is not unknown, and instead of drowning in the bathtub 3. Or, it is thought that it became unclear because it fell over in the washing place 4 and was out of the detection range of the sensor 10. Therefore, the whereabouts determination unit 22 determines that the user has drowned in the bathtub 3 when the previous location is the bathtub 3, and determines that the user has fallen down in the washroom 4 when the previous location is the washroom 4.

Further, the abnormality determination unit 23 determines that an abnormality has occurred in the person when the continuous bath time is equal to or longer than the first threshold time (for example, 15 minutes). Similarly, the abnormality determination unit 23 determines that an abnormality has occurred in a person when the continuous washing-room stay time is the second threshold time (for example, 30 minutes) or more. This is because, if the user stays in the bathtub 3 or the washing room 4 for a long time continuously, he or she may be fainted.

When the abnormality determining unit 23 determines that an abnormality has occurred in a person, the abnormality processing unit 25 executes a predetermined abnormality processing. As the abnormal time process, for example, a person in the other room such as the living room is informed by voice that the person in the bathroom is in an abnormal state, or an error is detected in the mobile terminal of a pre-registered remote family member. Examples include making phone calls and reporting abnormalities to designated monitoring centers.

The operation of the bathing management system 100 configured as above will be described. FIG. 3 is a flowchart showing the operation of the bathing management system 100. The process shown in FIG. 3 is executed when the switch of bathing management system 100 is turned on or when a predetermined start operation is performed.

The whereabouts determination unit 22 initially sets the previous whereabouts to "unknown" (S10).

The signal strength determination unit 21 determines whether or not the strength of the signal output by the sensor 10 is equal to or higher than a threshold value (S12). If the sensor output is equal to or higher than the threshold value (Y of S12) and dx≦d1 is satisfied (Y of S14), the whereabouts determination unit 22 determines that the person's whereabouts is the bathtub 3, and the whereabouts information holding unit 26. The "tub" is registered in the current location (S16). The registration unit 24 adds the time T to the bathtub total stay time of the time information holding unit 27 (S18). If the previous location is also the bathtub 3, the registration unit 24 adds the time T to the continuous bath time, and if the previous location is not the bath 3, the registration section 24 overwrites and registers the time T in the continuous bath time (S20). The abnormality determination unit 23 determines whether or not the continuous bath time is less than the first threshold time (S22). When the continuous bathtub stay time is less than the first threshold time (Y of S22), the whereabouts determination unit 22 sets the present whereabouts “bath” as the previous whereabouts (S24). When S24 is executed, the process returns to S12. If the duration of the continuous bathtub stay is equal to or longer than the first threshold time (N in S22), an abnormality has occurred (fainted) in a person, and therefore the abnormality processing unit 25 executes a predetermined abnormality processing (S26). . When the abnormal condition process is executed, the process shown in FIG. 3 ends.

If the sensor output is equal to or higher than the threshold value (Y of S12) and d1<dx≦d2 is satisfied (N of S14, Y of S28), the whereabouts determination unit 22 determines that the person's whereabouts is the washroom 4. The "washing place" is registered in the current location of the location information holding unit 26 (S30). The registration unit 24 adds the time T to the total stay time at the washroom (S32). Further, the registration unit 24 adds up the time T to the continuous washing time of the washing place if the previous living place is also the washing place 4, and overwrites T in the continuous washing time of the washing place if the previous living place is not the washing place 4 (S34). The abnormality determination unit 23 determines whether or not the continuous washing-room stay time is less than the second threshold value (S36). If the continuous washing-room stay time is less than the second threshold value (Y of S36), the whereabouts determination unit 22 sets the current whereabouts “washing place” as the previous whereabouts (S24). If the continuous washing-room stay time is equal to or longer than the second threshold value (N of S36), an abnormality has occurred (fainted) in the person, and therefore the abnormality processing unit 25 executes a predetermined abnormality processing (S26). .

If the sensor output is equal to or higher than the threshold value (Y of S12) and d2<dx is satisfied (N of S14, N of S28), the whereabouts determination unit 22 determines that the person's whereabouts is outside the bathroom 5. The whereabouts determination unit 22 sets the present location "outside the bathroom" as the previous location (S38).

If the sensor output is less than the threshold value (N in S12), the whereabouts determination unit 22 determines that the whereabouts of the person is unknown, and registers “unknown” as the current whereabouts of the whereabouts information holding unit 26 (S40). The abnormality determination unit 23 determines whether or not the previous location is the bathtub 3 (S42). If the previous location is the bathtub 3 (Y of S42), there is a possibility that a person is drowning in the bathtub 3, so the abnormal time processing unit 25 executes the abnormal time processing (S26). Further, when the previous location is the washing place 4 (N in S42, Y in S44), the abnormality determining unit 23 may have fallen in the washing place 4, so the abnormality processing unit 25 executes the abnormality processing. Yes (26). If the previous whereabouts is outside the bathroom 5 or unknown (N at S42, N at S44), the whereabouts determination unit 22 sets the present whereabouts to "unknown" (S24).

According to the bathing management system 100 according to the present embodiment described above, it is determined whether a person is in the bathtub 3, the washing place 4 or the outside 5 of the bathroom. The sensor 10 is determined not by determining whether it is in the bathtub 3 or the washing room 4 but by determining in which of the bathtub 3, the washing room 4 and the outside 5 of the bathroom, that is, by determining whether it is outside the bathroom 5 or not. It is possible to prevent erroneous determination that the user is in the bathtub 3 or the washing place 4 due to erroneous detection of the above. As a result, the whereabouts of a person in the bathroom 2 can be grasped more accurately.

Further, according to bathing management system 100 according to the present embodiment, the detection range of sensor 10 includes first area 5a outside bathroom 5. In the conventional system, the sensor does not detect whether or not the person is outside the bathroom 5, so when the person's whereabouts are unknown, the person is currently in the bathtub 3 because he/she is drowning or falls in the washroom 4 However, according to the bathing management system 100 according to the present embodiment, it is not possible to distinguish whether the person's whereabouts are unknown because the person is out of the bathroom 5 according to the present embodiment. Since it is also possible to detect whether or not the person is in position 5, it can be determined that an abnormality has occurred in the person when the person's whereabouts are unknown. That is, it is possible to create an "unknown" state for determining that there is an abnormality when the person in the bathtub 3 or the washing room 4 cannot be detected suddenly.

Further, according to bathing management system 100 according to the present embodiment, when the previous whereabouts is bathtub 3 or washroom 4 and the current whereabouts is unknown, it is determined that an abnormality has occurred in a person. That is, it is determined whether or not it has become unclear after passing through the first area 5a outside the bathroom 5. As a result, the person's whereabouts may be unclear because the person moved from the first area 5a outside the bathroom 5 to the second area 5b outside the bathroom 5, or because the person drowned in the bathtub 3 or fell down in the washroom 4 Can be determined whether or not. That is, it is possible to more accurately determine whether or not a person has an abnormality. Further, as compared with the case where it is determined that the person is outside the bathroom 5 because the person is not in the bathroom 2, whether or not the person is outside the bathroom 5 can be more accurately determined, and as a result, the bathtub 3 may be erroneously detected by the sensor 10 or the like. It is possible to prevent the person from being mistakenly determined to be in the washing room 4.

Further, according to bathing management system 100 according to the present embodiment, it is determined that an abnormality has occurred in a person when the previous location is bathtub 3 and the current location is outside bathroom 5. Here, when it is determined that the current location of the person whose previous location is determined to be the bathtub 3 is outside the bathroom 5, there is a possibility that the current location is determined to be outside the bathroom 5 due to erroneous detection of the sensor 10 or the like. In this case, there is a possibility that the bathtub 3 actually drowns or falls at the washing place 4. On the other hand, as described above, when the previous location is the bathtub 3 and the current location is outside the bathroom 5, it is determined that an abnormality has occurred in the person, that is, it is determined that the person is on a safer side, and Improves the safety of.

Further, according to bathing management system 100 of the present embodiment, sensor 10 is fixed to the wall surface facing door 2a of bathroom 2 with washing room 4 and bathtub 3 interposed therebetween. Thus, one sensor 10 can detect whether a person is in the bathtub 3, the washroom 4 or the outside 5 of the bathroom, and the bathing management system 100 can be realized at a lower cost.

Further, according to the bathing management system 100 according to the present embodiment, it is possible to acquire information about bathing time such as the time spent in the bathtub 3 and the time spent in the washroom 4. As described above, by determining whether or not the user is outside the bathroom 5, it is possible to prevent erroneous determination that the user is in the bathtub 3 or the washroom 4 due to erroneous detection of the sensor 10 or the like. You can get information. As a result, it is possible to give more appropriate advice regarding bathing, such as the time to warm in the bathtub 3.

(Second embodiment)
FIG. 4 is a schematic diagram showing a usage state of the bathing management system 200 according to the second embodiment. FIG. 4 corresponds to FIG. The bathing management system 200 includes the sensor 10 and the control device 120.

FIG. 5 is a block diagram showing the function and configuration of the control device 120. FIG. 5 corresponds to FIG. The control device 120 includes a location determination unit 122, an abnormality determination unit 123, a registration unit 24, an abnormality processing unit 25, a location information holding unit 26, and a time information holding unit 27. That is, unlike the control device 20, the control device 120 does not have the signal strength determination unit 21.

The whereabouts determination unit 122 determines that the whereabouts when “dx≦d1” is “tub 3”, the whereabouts when “d1<dx≦d2” is “washroom 4”, and the whereabouts when d2<dx≦d3 is satisfied. When “outside the bathroom 5” and d3<dx are established, the whereabouts is determined to be “unknown”. The whereabouts determination unit 122 determines that dx=d4 (>d3) when the sensor 10 does not detect a person. That is, the whereabouts determination unit 122 determines that the whereabouts are “unknown” even when the sensor 10 does not detect a person.

The abnormality determination unit 123 determines whether or not an abnormality has occurred in a person, similarly to the abnormality determination unit 23 in FIG. In addition, when the current location is "outside the bathroom 5" and the previous location is "tub 3", the abnormality determination unit 123 determines that an abnormality has occurred in the person. In this case, since the place of residence is outside the bathroom 5 without passing through the washroom 4, there is a possibility that a person is determined to be outside the bathroom 5 due to an erroneous detection of the sensor 10 or the like. For example, it is possible that a person is drowning in the bathtub 3 and only the hair is detected by the sensor 10, and as a result, it is determined that the person is outside the bathroom 5. Therefore, the abnormality determination unit 123 determines that the person is abnormal by tilting it to the safe side.

The operation of the bathing management system 200 configured as above will be described. FIG. 6 is a flowchart showing the operation of the bathing management system 100. FIG. 6 corresponds to FIG.

In the process of FIG. 6, unlike the process of FIG. 3, S14 is executed after S10. When d2<dx≦d3 is satisfied (N in S14, N in S28, Y in S137), the whereabouts determination unit 22 determines that the person's whereabouts is outside the bathroom 5, and the whereabouts information holding unit 26 stores. This time, "outside the bathroom" is registered in the whereabouts (S38). In this case, the abnormality determination unit 123 determines whether or not the previous location is the bathtub 3 (S139). If the previous location is the bathtub 3, there is a possibility that an abnormality has occurred in a person, so the abnormality processing unit 25 executes the abnormality processing (S24).

According to the bathing management system 200 according to the present embodiment described above, the same working effects as the effects obtained by the bathing management system 100 according to the first embodiment are achieved.

The bathing management system according to the embodiment has been described above. It should be understood by those skilled in the art that this embodiment is an exemplification, and that various modifications can be made to the combination of each constituent element, and such modifications are also within the scope of the present invention.

(Modification 1)
In the first and second embodiments, the case where the bathing management system 100 includes only one sensor for detecting the presence of a person has been described, but the present invention is not limited to this, and the bathing management system 100 includes a plurality of sensors. May be. The bathing management system 100 includes, for example, a sensor whose detection range is substantially only the bathtub 3, a sensor whose detection range is substantially only the washroom 4, and a detection range which is substantially outside the bathroom (the washroom 4 with the door in between). And a sensor which is only the part of the dressing room adjacent to the sensor).

(Modification 2)
In the first and second embodiments, the case where the sensor 10 is installed on the wall surface 2b facing the door 2a with the bathtub 3 and the washing place 4 sandwiched therebetween is described, but the present invention is not limited to this. The sensor 10 includes the bathtub 3, the washroom 4, and the outside of the bathroom 5 (first area 5a) in the detection range, and determines whether the person is in the bathtub 3, in the washroom 4, or outside the bathroom 5 from the sensor 10. It may be determined by the above, and the position other than the wall surface 2b may be fixed as long as it is a position where the entrance and exit of a person from the door 2a of the bathroom 2 can be detected. Therefore, the sensor 10 may be attached to, for example, a wall surface adjacent to the wall surface to which the door 2a is attached, that is, a wall surface substantially orthogonal to the wall surface to which the door 2a is attached, as long as these conditions are satisfied.

(Modification 3)
Although not particularly mentioned in the first and second embodiments, the control device may include a moving speed specifying unit that specifies a moving speed from the previous whereabouts to the present whereabouts (hereinafter, simply referred to as “moving speed”). .. The moving speed specifying unit specifies the moving speed, for example, by the following Expression 1.
(Formula 1) Moving speed=(distance dx at present location-distance dx at previous location)/time T
Note that, for example, the whereabouts information holding unit 26 may hold the distance dx at the previous whereabouts and the distance dx at the presenttime whereabouts in addition to the previous whereabouts and the presenttime whereabouts. In this case, if the sensor 10 does not detect a person, the whereabouts information holding unit 26 holds d4 (>d3) as the distance dx.

The abnormality determination unit may determine whether or not a person has an abnormality in consideration of the moving speed specified by the moving speed specifying unit. For example, when the current location is outside the bathroom 5, the previous location is the bathtub 3, and the moving speed satisfies a predetermined first speed threshold or more (in other words, the moving speed is abnormally fast) It may be determined that an abnormality has occurred in the. When the processing cycle is relatively long (for example, 0.5 seconds), although the person actually moves in the order of the bath 3, the washing room 4, and the outside of the bathroom 5, the person moves from the bath 3 without going through the washing room 4. The whereabouts determination unit 22 may determine that the user has moved to outside the bathroom 5. In the present modification, even in such a case, it is determined that the person has no abnormality unless the moving speed is abnormally high. As a result, it is possible to eliminate the inconvenience of executing unnecessary abnormal time processing. Conversely, according to this modification, the processing cycle can be made relatively long.

Further, for example, the abnormality determination unit may determine that an abnormality has occurred (fainted) in a person when the moving speed is substantially zero continuously for a predetermined time (for example, 5 minutes) or more. .. In this case, the time information holding unit 27 may hold the time when the moving speed is substantially zero as the continuous stationary time. Then, when the moving speed in the current processing cycle is substantially zero and the moving speed in the previous processing cycle is also substantially zero, the registration unit 24 integrates the time T with the continuous stationary time. Good.

Any combination of the above-described embodiments and modifications is also useful as an embodiment of the present invention. The new embodiment produced by the combination has the effects of the combined embodiment and the modified examples. It is also understood by those skilled in the art that the function to be achieved by each constituent element described in the claims is realized by the individual constituent elements shown in the embodiment and the modified examples or by their cooperation. ..

From the above description, the following inventions are recognized.
A bath management system according to an aspect of the present invention is a bath management system including at least one sensor for detecting the presence of a person in a detection range, and a controller connected to the sensor. A location determination unit that repeatedly determines whether a person is in the bathtub, in the washroom, or outside the bathroom based on the signal from the sensor. According to this aspect, it is possible to know whether a person is in the bathtub, the washroom, or the bathroom. Further, since it is possible to know whether or not the user is outside the bathroom, it can be determined that an abnormality has occurred in the person when the person in the bathtub or the bathroom cannot be detected.

The control device may further include a registration unit that registers information regarding the time the person is in the bathtub in a predetermined storage unit. In this case, it becomes possible to give appropriate advice regarding bathing.

If the previous location of the person determined by the location determination unit is the bathtub or the washroom and at least one sensor does not detect the presence of the person at the time of this determination by the location determination unit, the control device determines An abnormality determination unit that determines that an abnormality has occurred may be further included. In this case, it is possible to determine whether or not an abnormality has occurred in a person, so that the safety of the person is improved.

The control device may further include an abnormality determination unit that determines that an abnormality has occurred in the person when the previous location of the person determined by the location determination unit is the bathtub and the current location of the person is outside the bathroom. In this case, the safety of the person is improved because the determination is made by pushing it toward the safer side.

The sensor may be configured not to detect the water surface of the bathtub. In this case, it is possible to prevent erroneous detection of water accumulated in the bathtub as a person.

The bath management system may include only one sensor, and the sensor may be fixed to the wall surface facing the door of the bathroom across the washroom and the bathtub. In this case, one sensor can detect whether a person is in the bathtub, in the washroom, or outside the bathroom.

The sensor may be a radio wave sensor. In this case, the sensor can detect a person outside the bathroom even when the bathroom door is closed. Further, since a wide directivity can be easily obtained, one sensor can easily sense the entire bathroom.

3 bathtub, 4 washing place, 5 outside the bathroom, 10 sensor, 20 control device, 22 whereabouts determination unit, 23 abnormality determination unit, 100 bath management system.

Claims (9)

A bathing management system comprising: at least one sensor for detecting the presence of a person in the detection range; and a controller connected to the sensor,
The control device is
A whereabouts determination unit that repeatedly determines whether a person is in the bathtub, in the washroom, or outside the bathroom based on the signal from the sensor ,
An abnormality determination unit that determines that an abnormality has occurred in the person when the previous location of the person determined by the location determination unit is a bathtub and the location of the current person is outside the bathroom,
Bath management system characterized by including. A bathing management system comprising: at least one sensor for detecting the presence of a person in the detection range; and a controller connected to the sensor,
The sensor is a distance sensor.People drowning in the bathtub and those falling down in the washroom are out of the detection range, and those who are submerged in the bathtub in the non-drowning state and those who are in the washroom in the non-falling state. It is installed to be included in the detection range,
The bath control system is characterized in that the control device includes a whereabouts determination unit that repeatedly determines whether a person is in a bathtub, a washroom, or outside the bathroom based on a signal from the sensor. The bathing management system according to claim 1 or 2 , wherein the control device further includes a registration unit that registers information regarding a time when a person is in the bathtub in a predetermined storage unit. In the control device, the previous location of the person determined by the location determination unit is a bathtub or a washing area, and the at least one sensor did not detect the presence of the person at the time of the determination by the location determination unit this time. In this case, the bathing management system according to claim 2 or 3 , further comprising an abnormality determination unit that determines that an abnormality has occurred in a person. The bathing management system according to claim 1, wherein the sensor is configured not to detect the water surface of the bathtub. The bathing management system according to claim 1, wherein the bathing management system includes only one sensor, and the sensor is fixed to a wall surface facing the door of the bathroom across the washroom and the bathtub. Management system. The bath management system according to claim 5 or 6, wherein the sensor is a radio wave sensor. Persons drowning in the bathtub and those falling down in the washroom are out of the detection range, and those who are immersed in the bathtub in the non-drowning state and persons in the washroom in the non-falling state are included in the detection range. A bathing management method characterized by repeatedly determining whether a person is in a bathtub, a washing room, or outside a bathroom based on a signal from at least one distance sensor. Persons drowning in the bathtub and those falling down in the washroom are out of the detection range, and those who are immersed in the bathtub in the non-drowning state and persons in the washroom in the non-falling state are included in the detection range. A computer program for causing a computer to realize a function of repeatedly determining whether a person is in a bathtub, a washing room, or outside a bathroom based on a signal from at least one distance sensor.

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