JP2016170617A - Bathroom abnormality sensing system, bathroom abnormality sensing method, and bathroom abnormality sensing program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system capable of properly watching a bather.SOLUTION: In a bathroom abnormality sensing system in accordance with an aspect of the present invention, a transmitter that transmits a microwave as a transmission wave is disposed on one of a pair of mutually opposed side walls of a bathroom so that the transmission wave can be intercepted by a bather who is normally bathing in the bathroom, and a receiver that receives the transmission wave is disposed on the other side wall. An information processing unit acquires a receiving level of the transmission wave, which is transmitted from the transmitter, at the receiver when the bather is bathing in the bathroom, and decides based on the acquired receiving level whether the transmission wave is intercepted by a subject. If the information processing unit decides that the transmission wave is not intercepted by the subject, the information processing unit senses an abnormal condition of the bather because the bather does not exist within a range to which the transmission wave is radiated, and notifies that the bather is in the abnormal condition in the bathroom.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a bathroom abnormality detection system, a bathroom abnormality detection method, and a bathroom abnormality detection program.

  In recent years, systems have been developed that use microwaves to watch a subject. For example, Patent Document 1 proposes a system that detects an abnormality of a bather using microwaves. Specifically, the system proposed by Patent Document 1 includes a distance sensor disposed on the ceiling of the bathroom, and the distance sensor allows the bather's head during bathing in the bathroom bathtub and the water surface in the bathtub. Send microwaves to Next, the system measures the distance between the bather's head and the water surface in the bathtub based on the reflected waves reflected from the bather's head and the water surface in the bathtub, respectively. Then, the system determines that an abnormality has occurred in the bather when the measured distance between the bather's head and the water surface in the bathtub satisfies a predetermined condition, and notifies the outside of the bathroom of the abnormality. To do.

Japanese Patent Application Laid-Open No. 2015-017835

  However, the present inventors have found that the following problems arise in the above-described system that measures the distance between the bather's head and the water surface in the bathtub using microwaves.

  That is, in general, electromagnetic waves are reflected at the boundary surfaces having different relative dielectric constants, and the reflectance of a material having a high relative dielectric constant is higher than the reflectance of a material having a low relative dielectric constant. Get higher. Therefore, the reflectance of the microwave on the water surface in the bathtub is higher than the reflectance of the microwave on the human body. Therefore, the signal level of the reflected wave reflected from the bather's head is weaker than the signal level of the reflected wave reflected from the water surface in the bathtub. Further, in the bathtub area viewed from the ceiling, the water surface in the bathtub occupies most of the area, and the bather's head occupies only a small area. Furthermore, the water surface in the bathtub fluctuates in the vertical direction according to the movement of the bather.

  Therefore, on the receiving side, a weak reflected wave reflected from the bather's head that occupies only a small part of the area is buried in a strong reflected wave reflected from the water surface that occupies most of the area of the bathtub. Therefore, it may be difficult to identify the reflected wave reflected from the bather's head. Moreover, when the water surface in the bathtub fluctuates in the vertical direction, the relative positional relationship between the bather's head and the water surface in the bathtub may become unclear. Thereby, in the conventional system, the distance between the bather's head and the water surface in the bathtub cannot be measured accurately, and the abnormal state of the bather can be detected correctly. That is, in the conventional system, the present inventors have found that the problem of being unable to properly watch the bather taking a bath in the bathroom occurs due to the influence of the water surface in the bathtub. .

  In one aspect, the present invention has been made in consideration of such points, and an object thereof is to provide a system that can appropriately watch a bather.

  The present invention employs the following configuration in order to solve the above-described problems.

  That is, the bathroom abnormality detection system according to one aspect of the present invention is a transmission device capable of transmitting a microwave as a transmission wave, and is normal in one of the pair of side walls of the bathroom facing each other. The transmission device can receive the transmission wave from the transmission device arranged so that the transmission wave is blocked by the bather bathing in the bath, and the other side wall of the pair of bathrooms facing each other. And an information processing device for detecting an abnormal state in the bather's bathroom. And when the bather is taking a bath in the bathroom, the information processing apparatus acquires an information acquisition unit that acquires a reception level of the transmission wave transmitted from the transmission apparatus at the reception apparatus. It is determined whether or not the transmission wave is blocked by the object based on the reception level, and when it is determined that the transmission wave is not blocked by the object, the transmission wave is within a range irradiated. As the bather does not exist, an abnormality detection unit for detecting an abnormal state of the bather, and when detecting the abnormal state of the bather, for notifying that the bather is in an abnormal state in the bathroom A notification unit that performs abnormality detection notification.

  According to the above configuration, the transmission device that transmits the microwave as the transmission wave is disposed on one of the pair of side walls of the bathroom facing each other, and the reception device that receives the transmission wave is disposed on the other sidewall. The Thereby, the transmission wave transmitted from the transmission device is transmitted between the pair of side walls so as to be blocked by the bather who normally takes a bath in the bathroom.

  Here, for example, when the bather is submerged in the bathtub, falls in the bathroom, or crawls, the object that blocks transmission waves transmitted from the transmitter to the receiver No longer exists. Therefore, in the above configuration, when it is determined whether the transmission wave is blocked by the object based on the reception level of the transmission wave in the receiving device, and when it is determined that the transmission wave is not blocked by the object Assuming that the bather has fallen into the above state, the abnormal state of the bather is detected.

  Therefore, according to the said structure, the transmission wave for detecting the abnormal state of a bather is not transmitted with respect to the water surface in a bathtub, but is transmitted between a pair of side walls. Therefore, the transmission wave can be transmitted from the transmission device to the reception device without being greatly affected by the water surface in the bathtub. Also, the determination of whether or not the transmission wave is blocked by the object is easier than the process of determining the distance from the object, and can be performed relatively accurately. Therefore, according to the said structure, while avoiding the detection failure of the state of a bather resulting from the influence of the water surface in a bathtub as mentioned above, a bather's abnormal state is based on the reception level of the transmission wave in a receiver. It can be detected properly. That is, according to the said structure, it is possible to provide the system which can watch the bather bathing in a bathroom appropriately.

The microwave is an electromagnetic wave having a frequency from 300 MHz to 3 THz. For example, the frequency of the transmission wave transmitted by the transmission device may be set in the range of 1 GHz to 100 GHz. For example, the transmission wave transmitted by the transmission device may be a millimeter wave. The millimeter wave is an electromagnetic wave having a frequency from 30 GHz to 300 GHz. When the frequency of the transmission wave is set to 1.5 GHz or more, the power density of the transmission wave is set to be 1 mW / cm ² or less, for example. When the frequency of the transmission wave is set in the range of 300 MHz to 1.5 GHz, the power density of the transmission wave is, for example, “(frequency) ÷ 1500” (mW / cm ² ) or less. Is set.

  The abnormal state of the bather can include any abnormal state assumed for the bather in the bathroom, and may be appropriately selected according to the state to be detected in order to watch over the bather. As an example of the abnormal state of the bather, for example, submergence in the bathtub, falling in the bathtub or washing place, crouching in the bathroom, lying down, and the like can be given.

  Moreover, as another embodiment of the bathroom abnormality detection system according to the above aspect, the transmission device may be configured to be able to receive a reflected wave reflected by an object transmitted by the transmission device. When the abnormality detection unit determines that the transmission wave is blocked by the object as a result of the determination, based on the difference between the acquired frequency of the transmission wave and the frequency of the reflected wave. Further, whether or not the object is moving may be further determined, and when it is determined that the object is not moving, the abnormal state of the bather may be detected.

  The bathroom abnormality detection system according to the above configuration detects an abnormal state of the bather, assuming that there is no bather in a range where the transmission wave is irradiated when the transmission wave is not blocked by the object. However, the scene in which the bather falls into an abnormal state is not limited to the case where such a transmission wave is not blocked by the object, and the bather is abnormal even if the transmission wave is blocked by the object. It may be in a state.

  For example, when an object other than a bather (especially an inanimate object) blocks a transmission wave, the reception level of the transmission wave does not reflect the state of the bather, and the bather is submerged, falls, etc. You may have fallen into an abnormal state. In addition, for example, even when the bather blocks the transmission wave, the biological reaction such as the breathing, heartbeat, and body movement of the bather has stopped, and the bather may be in an abnormal state. Therefore, in the above configuration, when there is an object that blocks the transmission wave, it may be determined that the bather is in a normal state, but when the bathroom abnormality detection system is configured as described above, It may not be possible to detect an abnormal state of a bather. That is, in the above case, there is a possibility that the bather's state is erroneously detected.

  Here, when the bather is bathing normally, the body of the bather is moving due to biological reactions such as breathing, heartbeat, and body movement. Therefore, the frequency of the reflected wave reflected from the bather's body varies from the frequency of the transmitted wave by the amount that the body of the bather moves. On the other hand, if the object that blocks the transmission wave is stopped, such as when the object that blocks the transmission wave is not a bather but an inanimate object, or when the biological reaction of the bather has stopped, The frequency of the reflected wave reflected hardly fluctuates from the frequency of the transmission wave.

  Therefore, when the bathroom abnormality detection system according to the configuration determines that the transmission wave is shielded by the object, the object moves based on the difference between the frequency of the transmission wave and the frequency of the reflected wave. It is further determined whether or not. And when the said bathroom abnormality detection system determines with the said target object not moving, the said bather has fallen into the abnormal state, and detects the abnormal state of the said bather. This makes it possible to detect an abnormal state of the bather even when there is an object that blocks the transmission wave as described above. That is, according to the said structure, the erroneous detection of the state of a bather who may arise in the above cases can be prevented.

  Moreover, as another form of the bathroom abnormality detection system according to the above aspect, when the notification unit detects the abnormal state of the bather, the abnormal state of the bather is continuously detected for a certain time or more. Sometimes, the abnormality detection notification may be performed. According to this configuration, the abnormality detection notification is made only when the abnormal state of the bather continues for a certain time or longer, so that the bather's state is satisfied for a moment only when the abnormal state is satisfied. It is possible to prevent erroneous notification of abnormal detection notifications. Therefore, according to the said structure, the misreport of abnormality detection notification can be prevented and bather's abnormality detection can be notified appropriately.

  As another form of the bathroom abnormality detection system according to the above aspect, a plurality of the transmission devices may be provided. According to the said structure, the abnormal state of a bather can be detected in the wider range in a bathroom.

  In addition, as another embodiment of the bathroom abnormality detection system according to the above aspect, a plurality of the reception devices may be provided. According to the said structure, the abnormal state of a bather can be detected in the wider range in a bathroom.

  As another form of the bathroom abnormality detection system according to the above aspect, a plurality of the transmission devices may be provided, and a plurality of the reception devices may be provided. The plurality of transmitting devices may be disposed on one side wall of the pair of side walls of the bathroom facing each other and on one side wall of the other pair of side walls of the bathroom facing each other, The plurality of receiving devices may be arranged on the other side wall of the pair of side walls of the bathroom facing each other and on the other side wall of the other pair of side walls of the bathroom facing each other. According to the said structure, a bather's abnormal state can be detected according to various scenes.

  In addition, as another form of the bathroom abnormality detection system according to each of the above forms, an information processing system that realizes each of the above configurations, an information processing method, or a program may be used. However, it may be a storage medium that can be read by a computer, a device, a machine, or the like that records such a program. Here, the computer-readable recording medium is a medium that stores information such as programs by electrical, magnetic, optical, mechanical, or chemical action. The information processing system may be realized by one or a plurality of information processing devices.

  For example, a bathroom abnormality detection method according to one aspect of the present invention is a transmission device configured to be able to transmit a microwave as a transmission wave, and is provided on one side wall of a pair of side walls of a bathroom facing each other. A transmitter arranged so that the transmitted wave is blocked by a bather normally bathing in the bathroom, and the other side wall of the pair of side walls of the bathroom facing each other, the transmitter from the transmitter A computer used together with a receiving device arranged so as to receive a transmission wave is a receiving device for the transmission wave transmitted from the transmitting device when the bather is bathing in a bathroom. And determining whether the transmission wave is blocked by the object based on the acquired reception level, and if the transmission wave is not blocked by the object If the bathing person does not exist in the range irradiated with the transmission wave, the step of detecting an abnormal state of the bather, and the bather is detected when detecting the abnormal state of the bather. Performing an abnormality detection notification for notifying that there is an abnormal condition in the bathroom.

  Further, for example, a bathroom abnormality detection program according to one aspect of the present invention is a transmission device configured to be able to transmit a microwave as a transmission wave, and is provided on one side wall of a pair of bathroom side walls facing each other. The transmitter arranged to be blocked by the bather normally bathing in the bathroom, and the other side wall of the pair of side walls of the bathroom facing each other from the transmitter When the bather is taking a bath in a bathroom, the reception device arranged so as to receive the transmission wave of the transmission device receives the transmission wave transmitted from the transmission device when the bather is taking a bath in the bathroom. A step of acquiring a reception level at the device, and determining whether or not the transmission wave is blocked by an object based on the acquired reception level, and the transmission wave is blocked by the object If it is determined that the bather is not present in the range irradiated with the transmission wave, the step of detecting an abnormal state of the bather, and the case of detecting the abnormal state of the bather, And a step of performing an abnormality detection notification for notifying that the bather is in an abnormal state in the bathroom.

  ADVANTAGE OF THE INVENTION According to this invention, it is possible to provide the system which can watch a bather appropriately.

FIG. 1A schematically illustrates a scene where the present invention is applied as seen from above. FIG. 1B schematically illustrates a scene where the present invention is applied as viewed from the side. FIG. 1C schematically illustrates a scene where the present invention is applied as viewed from the side. FIG. 2 illustrates the hardware configuration of the bathroom abnormality detection system according to the embodiment. FIG. 3 illustrates a functional configuration of the information processing apparatus included in the bathroom abnormality detection system according to the embodiment. FIG. 4 illustrates a processing procedure related to watching a bather by the bathroom abnormality detection system according to the embodiment. FIG. 5 illustrates the arrangement of transmission devices and reception devices according to another embodiment. FIG. 6A illustrates the arrangement of transmission devices and reception devices according to another embodiment. FIG. 6B illustrates the arrangement of transmission devices and reception devices according to another embodiment. FIG. 7 illustrates a scene where a plurality of transmission devices according to another embodiment are arranged. FIG. 8 illustrates a scene where a plurality of receiving devices according to another embodiment are arranged. FIG. 9 illustrates a scene in which a transmission device and a reception device according to another embodiment are arranged in two directions, respectively. FIG. 10 illustrates an arrangement of transmission apparatuses and reception apparatuses according to another embodiment. FIG. 11 illustrates the arrangement of transmission apparatuses and reception apparatuses according to another embodiment.

  Hereinafter, an embodiment according to an aspect of the present invention (hereinafter, also referred to as “this embodiment”) will be described with reference to the drawings. However, this embodiment described below is only an illustration of the present invention in all respects. It goes without saying that various improvements and modifications can be made without departing from the scope of the present invention. That is, in implementing the present invention, a specific configuration according to the embodiment may be adopted as appropriate. Although data appearing in the present embodiment is described in a natural language, more specifically, it is specified by a pseudo language, a command, a parameter, a machine language, or the like that can be recognized by a computer.

§1 Application scenes First, scenes to which the present invention is applied will be described with reference to FIGS. 1A to 1C. FIG. 1A to FIG. 1C exemplify a scene of watching a bather bathing in the bathroom 9 by the bathroom abnormality detection system 10 according to the present embodiment as an example of the scene to which the present invention is applied. FIG. 1A illustrates the scene viewed from the ceiling side (z-axis direction) of the bathroom 9, and FIGS. 1B and 1C each viewed the scene from the side of the bathroom (x-axis direction). The situation is illustrated. In the following, for convenience of explanation, the x-axis direction of each drawing is also referred to as “left-right direction”, the y-axis direction is referred to as “front-rear direction”, and the z-axis direction is also referred to as “up-down direction”. In addition, FIG. 1A and FIG. 1B have illustrated the scene where the bather is normally immersed in the hot water or water in a bathtub, and FIG. 1C is that a bather falls or sinks in the hot water or water in a bathtub. The scene is illustrated.

  As illustrated in FIG. 1A, the bathroom 9 according to the present embodiment has four side walls. Hereinafter, for convenience of explanation, these are referred to as “right side wall 91”, “left side wall 92”, “front side wall 93”, and “rear side wall 94”, respectively. The right side wall 91 and the left side wall 92 are paired and face each other in the left-right direction. Further, the front side wall 93 and the rear side wall 94 are also paired and face each other in the front-rear direction.

  A bathtub 95 is disposed on the right side wall 91 side of the bathroom 9, and the longitudinal direction of the bathtub 95 coincides with the front-rear direction (y-axis direction). Further, a washing place 97 is provided outside the bathtub 95 on the left wall 92 side of the bathroom 9. An entrance 96 for bathers to enter the bathroom 9 is provided on the washing wall 97 side of the rear side wall 94. In addition, the structure of the bathroom 9 does not need to be limited to such an example, and can be appropriately selected according to the embodiment.

  The bather enters the bathroom 9 through the entrance 96. And a bather wash | cleans the body in the washing place 97 in the bathroom 9, or immerses in hot water or cold water in the bathtub 95. The bathroom abnormality detection system 10 according to the present embodiment monitors the behavior of the bather in the bathroom 9 and detects whether the bather in the bathroom 9 is in an abnormal state. It is a system to watch over people.

  Specifically, the bathroom abnormality detection system 10 includes a transmission device 2 configured to be able to transmit a microwave as a transmission wave, a reception device 3 configured to be able to receive the transmission wave, and a bather's bathroom 9. And an information processing apparatus 1 for detecting the abnormal state. The transmission device 2 and the reception device 3 are respectively disposed on a pair of side walls facing each other among the four side walls 91 to 94 of the bathroom 9.

  In this embodiment, as illustrated in FIGS. 1A to 1C, the transmission device 2 faces the rear side wall 94 and to the right of the front side wall 93 so as to transmit a transmission wave on the bathtub 95. Has been placed. In particular, as illustrated in FIG. 1B, the transmission device 2 is placed on the bathtub 95 on the right side of the front side wall 93 so that the transmission wave is blocked by a bather who is normally immersed in hot water or cold water in the bathtub 95. Arranged at an appropriate height. On the other hand, the receiving device 3 faces the front side wall 93 so as to receive the transmission wave from the transmitting device 2 and has an appropriate height on the right side bathtub 95 of the rear side wall 94. Is arranged in.

  Therefore, as illustrated in FIG. 1B, when the bather is normally immersed in hot water or cold water in the bathtub 95, the transmission wave transmitted from the transmission device 2 is blocked by the bather, and the reception device 3 The reception level of the transmission wave decreases. On the other hand, as illustrated in FIG. 1C, when the bather falls from the irradiation range of the transmission wave transmitted from the transmission device 2 due to falling or sinking, there is an object that blocks the transmission wave. No longer. Therefore, the reception level of the transmission wave in the reception device 3 is increased.

  Therefore, the information processing apparatus 1 according to the present embodiment acquires the reception level of the transmission wave transmitted from the transmission apparatus 2 at the reception apparatus 3 when the bather is immersed in hot water or cold water in the bathtub 95. . Next, the information processing apparatus 1 determines whether or not the transmission wave is blocked by the object based on the acquired reception level. As described above, when the transmitted wave is not obstructed by the object, the bather can be assumed to have fallen into an abnormal state such as falling or being submerged. For this reason, when it is determined that the transmission wave is not blocked by the object, the information processing apparatus 1 detects the bather's abnormal state on the assumption that there is no bather in the range where the transmission wave is irradiated.

  And the information processing apparatus 1 which concerns on this embodiment performs the abnormality detection notification for notifying that the said bather is in an abnormal state in the bathroom 9, when the abnormal state of a bather is detected. That is, when the bather taking a bath in the bathroom 9 falls into an abnormal state, the information processing apparatus 1 issues an alarm for notifying the abnormal state. Thereby, the user of the bathroom abnormality detection system 10 according to the present embodiment can know the abnormal state of the bather in the bathroom 9 and can watch over the bather.

  As described above, according to the present embodiment, the transmission waves used for detecting abnormal states such as the submergence of the bather and the overturn are not transmitted to the water surface in the bathtub 95 but opposed to each other. Between the front side wall 93 and the rear side wall 94 to be transmitted along the water surface. Therefore, a transmission wave can be transmitted from the transmission device 2 to the reception device 3 without being greatly affected by the surface of the hot water or cold water in the bathtub 95. Moreover, in this embodiment, the abnormal state of the bather in the bathroom 9 is detected based on the determination whether the transmission wave is blocked by the object. The determination of whether or not the transmission wave is blocked by the object is easier than the process of determining the distance between the transmission device 2 and the object, and can be performed relatively accurately.

  Therefore, according to the present embodiment, the abnormal state of the bather is appropriately determined based on the reception level of the transmitted wave at the receiving device 3 while avoiding poor detection of the state of the bather due to the influence of the water surface in the bathtub 95. Can be detected. Therefore, according to the said structure, the bather who takes a bath in a bathroom can be watched appropriately.

  As illustrated in FIGS. 1A to 1C, in this embodiment, the transmission device 2 is disposed on the bathtub 95 side of the front side wall 93, and the reception device 3 is disposed on the bathtub 95 side of the rear side wall 94. . Specifically, when the bather is normally immersed in the hot water or water in the bathtub 95, the transmission device 2 and the reception device 3 transmit a transmission wave transmitted from the transmission device 2 to the bather's head or the like. It is placed at a height that is blocked by the body. However, the arrangement of the transmission device 2 and the reception device 3 is not limited to such an example, and may be appropriately selected according to the embodiment. For example, the transmission device 2 may be disposed on the rear side wall 94, and the reception device 3 may be disposed on the front side wall 93. Further, the transmission device 2 and the reception device 3 may be disposed on the washing place 97 side of each of the front side wall 93 and the rear side wall 94. Further, the transmission device 2 and the reception device 3 may be disposed on the right side wall 91 and the left side wall 92 that face each other.

  However, the abnormal state of the bather to be detected can be different depending on the arrangement of the transmission device 2 and the reception device 3. In this embodiment, since each of the transmission device 2 and the reception device 3 is disposed on the bathtub 95 side of each of the front side wall 93 and the rear side wall 94, the information processing device 1 is submerged and falls in the bather 95 of the bather. Can be detected as an abnormal state. On the other hand, when each of the transmitter 2 and the receiver 3 is disposed on the side of the washing area 97 of each of the front side wall 93 and the rear side wall 94, for example, the bather may fall down, crumble, lie down, etc. It can be detected as an abnormal condition. That is, the abnormal state of the bather that can be detected by the information processing device 1 can depend on the arrangement of the transmission device 2 and the reception device 3.

  In the present embodiment, when the bather is immersed in the hot water or cold water in the bathtub 95, this corresponds to “when the bather is bathing in the bathroom” of the present invention. This “when the bather is taking a bath in the bathroom” may depend on the arrangement of the transmission device 2 and the reception device 3 in the same manner as described above in order to correspond to a scene where an abnormal state of the bather is detected. Specifically, “when the bather is bathing in the bathroom” of the present invention corresponds to the case where the bather is present within the transmission wave irradiation area of the transmitter 2.

  Similarly, in the present embodiment, as illustrated in FIG. 1B, the state where the bather is normally immersed in the hot water or cold water in the bathtub 95 corresponds to the “normally bathing in the bathroom” state of the present invention. To do. The transmitter 2 is arranged so that the transmission wave is blocked by the bather in the state of “being bathed normally in the bathroom”. Therefore, this “normally bathing in the bathroom” state can also depend on the arrangement of the transmission device 2 and the reception device 3 as described above. Specifically, the state of “being bathed normally in the bathroom” is a state in which a bather is present in a range in which a transmission wave transmitted from the transmitter 2 arranged for such a state can be blocked. It corresponds to.

  In the present embodiment, one transmission device 2 and one reception device 3 are used. However, the number of transmitting devices 2 and receiving devices 3 may not be one, but may be plural. The numbers of the transmission device 2 and the reception device 3 may be appropriately selected according to the embodiment.

  Moreover, in FIG. 1A-FIG. 1C, the transmitter 2 and the receiver 3 are each arrange | positioned at the side surface inside the bathroom 9 of each of the front side wall 93 and the rear side wall 94. FIG. However, the installation method of the transmission device 2 and the reception device 3 may not be limited to such an example, and may be appropriately selected according to the embodiment. For example, if the transmission wave can pass through the side wall, the transmission device 2 and the reception device 3 may be embedded in the front side wall 93 and the rear side wall 94, respectively, or may be disposed outside.

  Further, the location of the information processing apparatus 1 may be appropriately selected according to the embodiment as long as information can be acquired from the reception apparatus 3. For example, as illustrated in FIGS. 1A to 1C, the information processing device 1 may be disposed at a place where a cord extending from the transmission device 2 and the reception device 3 can be connected. In this case, the information processing apparatus 1 may be disposed in the vicinity of the bathroom 9. Further, the information processing apparatus 1 may be connected to the transmission apparatus 2 and the reception apparatus 3 via a network by wire and / or wireless, or may be disposed at a place completely different from the transmission apparatus 2 and the reception apparatus 3. Good. Furthermore, when information is not acquired from the transmission device 2, the information processing device 1 may not be connected to the transmission device 2.

§2 Configuration example <Hardware configuration>
Next, the hardware configuration of the bathroom abnormality detection system 10 will be described with reference to FIG. FIG. 2 illustrates the hardware configuration of the bathroom abnormality detection system 10 according to the present embodiment. Hereinafter, each configuration of the bathroom abnormality detection system 10 will be described.

(Information processing device)
First, the hardware configuration of the information processing apparatus 1 will be described. The information processing apparatus 1 is a computer that is used together with the transmission apparatus 2 and the reception apparatus 3. Specifically, as illustrated in FIG. 2, the information processing apparatus 1 includes a control unit 11 including a CPU, a RAM (Random Access Memory), a ROM (Read Only Memory), and the like, and a program 5 executed by the control unit 11. , A touch panel display 13 for displaying and inputting images, a speaker 14 for outputting sound, an external interface 15 for connecting to an external device, and performing communication via a network This is a computer to which a communication interface 16 and a drive 17 for reading a program stored in the storage medium 6 are electrically connected. In FIG. 2, the communication interface and the external interface are described as “communication I / F” and “external I / F”, respectively.

  In addition, regarding the specific hardware configuration of the information processing apparatus 1, components can be omitted, replaced, and added as appropriate according to the embodiment. For example, the control unit 11 may include a plurality of processors. In addition, for example, the touch panel display 13 may be replaced with an input device and a display device that are separately connected independently. For example, the speaker 14 may be omitted. Further, for example, the speaker 14 may be connected to the information processing apparatus 1 as an external apparatus instead of as an internal apparatus of the information processing apparatus 1. Further, the information processing apparatus 1 may include a plurality of external interfaces 15.

  In the present embodiment, the storage unit 12 stores the program 5. This program 5 is a program for causing the information processing apparatus 1 to execute each process related to detection of an abnormal state of a bather described later, and corresponds to the “bathroom abnormality detection program” of the present invention. The program 5 may be recorded on the storage medium 6.

  The storage medium 6 stores information such as a program by an electrical, magnetic, optical, mechanical, or chemical action so that information such as a program recorded by a computer or other device or machine can be read. It is a medium to do. The storage medium 6 corresponds to the “storage medium” of the present invention. FIG. 2 illustrates a disk-type storage medium such as a CD (Compact Disk) and a DVD (Digital Versatile Disk) as an example of the storage medium 6. However, the type of the storage medium 6 is not limited to the disk type and may be other than the disk type. Examples of the storage medium other than the disk type include a semiconductor memory such as a flash memory.

  Note that such an information processing apparatus 1 may be, for example, an apparatus designed exclusively for a service to be provided, or a general-purpose apparatus such as a PC (Personal Computer) or a tablet terminal. Furthermore, the information processing apparatus 1 may be implemented by one or a plurality of computers.

(Transmitter)
Next, the hardware configuration of the transmission apparatus 2 will be described. In the present embodiment, the transmission device 2 is configured to be able to transmit a microwave as a transmission wave. Further, the transmission device 2 is configured to be able to receive a reflected wave obtained by reflecting a transmission wave transmitted from the own device by an object. Specifically, the transmission device 2 includes an antenna unit 21, a transmission circuit 22, a reception circuit 23, and a signal processing unit 24.

  When the transmission device 2 transmits a transmission wave, the signal processing unit 24 appropriately generates a signal to be transmitted. And the transmission circuit 22 produces | generates a microwave based on the signal produced | generated by the signal processing part 24, and transmits the microwave produced | generated via the antenna part 21 as a transmission wave. On the other hand, the reflected wave returned from the transmitted wave hits the object is received by the receiving circuit 23 through the antenna unit 21. The signal processing unit 24 appropriately processes the signal received by the receiving circuit 23.

Note that the microwave is an electromagnetic wave having a frequency of 300 MHz to 3 THz, and the frequency of the transmission wave may be appropriately selected from this range according to the embodiment. For example, the frequency of the transmission wave may be set in the range of 1 GHz to 100 GHz. For example, the transmission wave transmitted by the transmission device 2 may be a millimeter wave. The millimeter wave is an electromagnetic wave having a frequency from 30 GHz to 300 GHz. When the frequency of the transmission wave is set to 1.5 GHz or more, the power density of the transmission wave is set to be 1 mW / cm ² or less, for example. When the frequency of the transmission wave is set in the range of 300 MHz to 1.5 GHz, the power density of the transmission wave is, for example, “(frequency) ÷ 1500” (mW / cm ² ) or less. Set

  Further, the configuration of the transmission device 2 may be appropriately selected according to the embodiment as long as the microwave can be transmitted. For example, the transmission circuit 22 and the reception circuit 23 may be individually provided with an antenna unit. In addition, for example, when the process of determining whether or not an object to be described later is moving (step S103 to be described later) is omitted, the transmission device 2 may not be configured to be able to receive the reflected wave. 23 may be omitted. A known transmission device can be adopted as the transmission device 2. For example, KER-T1 manufactured by Sachibukuro Techno Co., MWBS-TR-02 manufactured by Matsushima Meja Tech Co., Ltd., or the like can be used for the transmitter 2.

(Receiver)
Next, the hardware configuration of the receiving device 3 will be described. In the present embodiment, the reception device 3 is configured to be able to receive a transmission wave transmitted from the transmission device 2. Specifically, an antenna unit 31, a receiving circuit 32, and a signal processing unit 33 are provided. The transmission wave transmitted from the transmission device 2 is received by the reception circuit 32 through the antenna unit 31. Then, the signal processing unit 33 appropriately processes the signal received by the receiving circuit 32.

  Note that the configuration of the reception device 3 may be selected as appropriate according to the embodiment as long as the transmission wave (microwave) transmitted from the transmission device 2 can be received. A known receiving device can be adopted as such a receiving device 3. For example, KER-R1 manufactured by Sachibukuro Techno Co., Ltd., MWBS-RC-02 manufactured by Matsushima Meitec Co., Ltd., or the like can be used as the receiving device 3.

<Functional configuration example>
Next, the functional configuration of the information processing apparatus 1 will be described with reference to FIG. FIG. 3 illustrates a functional configuration of the information processing apparatus 1 included in the bathroom abnormality detection system 10 according to the present embodiment. In the present embodiment, the control unit 11 of the information processing apparatus 1 expands the program 5 stored in the storage unit 12 in the RAM. And the control part 11 interprets and runs the program 5 expand | deployed by RAM by CPU, and controls each component. Thereby, the information processing apparatus 1 functions as a computer including the information acquisition unit 51, the abnormality detection unit 52, and the notification unit 53.

  The information acquisition unit 51 transmits the transmission transmitted from the transmission device 2 when the bather is bathing in the bathroom 9, specifically, when the bather is immersed in hot water or water in the bathtub 95. The reception level of the wave receiving device 3 is acquired. As described above, in the present embodiment, when the bather is normally immersed in the hot water or water in the bathtub 95, the transmission wave transmitted from the transmitter 2 is blocked by the body of the bather. On the other hand, when the bather falls in the bathtub 95 or sinks, the transmitted wave transmitted from the transmitter 2 reaches the receiver 3 as it is without being blocked by the bather.

  Therefore, the abnormality detection unit 52 determines whether or not the transmission wave is blocked by the object based on the acquired reception level. Thereby, the abnormality detection part 52 detects a bather's abnormal state noting that a bather does not exist in the irradiation range of a transmission wave, when it determines with the transmission wave not being interrupted by the target object. And the notification part 53 performs the abnormality detection notification for notifying that a bather is in an abnormal state in the bathroom 9, when detecting the abnormal state of a bather.

  In the present embodiment, an example in which these functions are realized by a general-purpose CPU has been described. However, some or all of these functions may be realized by one or more dedicated processors. In addition, regarding the functional configuration of the information processing apparatus 1, functions may be omitted, replaced, and added as appropriate according to the embodiment. Each function will be described in detail in an operation example described later.

§3 Operation example Next, an operation example of the bathroom abnormality detection system 10 will be described with reference to FIG. FIG. 4 illustrates a processing procedure relating to watching a bather by the information processing apparatus 1 included in the bathroom abnormality detection system 10. In addition, the process procedure regarding the watching of the bather demonstrated below is corresponded to the "bathroom abnormality detection method" of this invention. However, the processing procedure related to watching a bather described below is merely an example, and each processing may be changed as much as possible. Further, in the processing procedure described below, steps can be omitted, replaced, and added as appropriate according to the embodiment.

(Step S101)
In step S <b> 101, the control unit 11 functions as the information acquisition unit 51 and acquires the reception level of the transmission wave transmitted from the transmission device 2 at the reception device 3. And the control part 11 advances a process to the following step S102, after acquiring the said reception level.

  In the present embodiment, as illustrated in FIGS. 1A to 1C, the transmission device 2 is disposed on the front side wall 93, and the reception device 3 is disposed on the rear side wall 94. Transmission waves are transmitted between the transmission device 2 and the reception device 3. Here, the transmission processing of the transmission wave by the transmission device 2 may be controlled by the information processing device 1 or may be executed autonomously. Similarly, the reception processing of the transmission wave by the reception device 3 may be controlled by the information processing device 1 or may be executed autonomously.

  The control unit 11 accesses the reception device 3 under the situation where the transmission wave is transmitted between the transmission device 2 and the reception device 3 as described above, and transmits the transmission wave in the reception device 3. Get the reception level. The method of measuring the reception level of the transmission wave at the reception device 3 may be appropriately selected according to the embodiment, and the reception level of the transmission wave may be measured based on a known measurement method. In addition, the reception level measurement process may be performed by the signal processing unit 33 of the reception device 3 or the control unit 11. Further, the reception level may be expressed in a known expression format. When the control unit 11 acquires the reception level of the transmission wave in the receiving device 3 as described above, the control unit 11 proceeds to the next step S102.

  In addition, this step S101 is performed when the bather is bathing in the bathroom 9. Specifically, as described above, in the present embodiment, the time when the bather is immersed in hot water or water in the bathtub 95 corresponds to the time when the bather is bathing in the bathroom 9. Therefore, in this embodiment, this step S101 is performed when the bather is immersed in the hot water or water in the bathtub 95. A process for detecting whether or not the bather is present in the bathtub 95 will be described later.

(Step S102)
In the next step S102, the control unit 11 functions as the abnormality detection unit 52, and determines whether or not the transmission wave is blocked by the object based on the reception level acquired in step S101.

  As described above, in the present embodiment, as illustrated in FIG. 1B, when the bather is normally immersed in hot water or cold water in the bathtub 95, the transmission wave transmitted from the transmission device 2 is blocked by the bather. As a result, the reception level of the transmission wave in the receiving device 3 decreases. On the other hand, as illustrated in FIG. 1C, when the bather falls from the irradiation range of the transmission wave transmitted from the transmission device 2 due to falling or sinking, there is an object that blocks the transmission wave. No longer. Therefore, the reception level of the transmission wave in the reception device 3 is increased. The control unit 11 determines whether or not the transmission wave transmitted from the transmission device 2 is blocked by the object based on the level of the reception level.

  For example, the control unit 11 may determine whether or not the transmission wave is blocked by the object by comparing the reception level acquired in step S101 with a predetermined threshold value. Specifically, the control unit 11 compares the reception level acquired in step S101 with a predetermined threshold, and when the reception level is lower than the predetermined threshold, the transmission wave is blocked by the object. judge. On the other hand, the control part 11 determines with the transmission wave not being interrupted by the target object, when the reception level acquired by step S101 is larger than a predetermined threshold value. Note that the predetermined threshold used for such determination may be appropriately set according to the embodiment.

  Further, for example, the information processing apparatus 1 may store the respective reception level ranges in the storage unit 12 when the transmission wave is blocked by the object and when the transmission wave is not blocked by the object. . And the control part 11 may determine whether the transmission wave is obstruct | occluded by the target object by investigating in which range the reception level acquired by step S101 is contained. Note that the range of each reception level used for such determination may be appropriately set according to the embodiment.

  However, the method of determining whether or not the transmission wave is blocked by the object based on the reception level of the transmission wave in the reception device 3 may not be limited to such an example, depending on the embodiment. You may select suitably.

  Then, as a result of determining whether or not the transmission wave is blocked by the object, the control unit 11 proceeds to the next step S103 when determining that the transmission wave is blocked by the object. On the other hand, when it is determined that the transmission wave is not blocked by the object, the control unit 11 detects the abnormal state of the bather as no bather is present in the range irradiated with the transmission wave, and the next step The process proceeds to S104.

(Step S103)
In the next step S103, the control unit 11 functions as the abnormality detection unit 52, and further determines whether or not the object is moving based on the frequency of the transmission wave and the frequency of the reflected wave.

  In the above step S102, when the control unit 11 determines that the transmission wave transmitted from the transmission device 2 is not blocked by the object, the bath 11 assumes that there is no bather in the range where the transmission wave is irradiated. Detect an abnormal state of the person. However, the scene where the bather falls into an abnormal state is not limited to the case where such a transmission wave is not blocked by the object, and the bather is abnormal even if the transmission wave is blocked by the object. It may be in a state.

  As described above, for example, when an object other than the bather (especially an inanimate object) blocks the transmission wave, the reception level of the transmission wave does not reflect the state of the bather. There is a possibility of falling into an abnormal state such as submergence or falling. In addition, for example, even when the bather blocks the transmission wave, the biological reaction such as the breathing, heartbeat, and body movement of the bather has stopped, and the bather may be in an abnormal state.

  Therefore, in step S103, the possibility as described above is detected by determining whether or not the object is moving. Specifically, when the bather is bathing normally, the body of the bather is moving due to a biological reaction such as breathing, heartbeat, body movement, etc., so the reflected wave received by the transmitter 2 is received. The frequency of fluctuates from the frequency of the transmitted wave by the Doppler effect as much as the bather's body moves. Here, the frequency of the reflected wave also fluctuates from the frequency of the transmitted wave even when the water surface of the bathtub 95 moves. However, the frequency fluctuation period due to the movement of the water surface may be different from the frequency fluctuation period due to the movement of the biological reaction. For this reason, the frequency fluctuation period due to the movement of the water surface and the frequency fluctuation period due to the movement of the biological reaction can be separated by, for example, Fourier transform. That is, even if the reflected wave received by the transmitter 2 includes a component reflected from the water surface, the component reflected from the water surface can be separated from the component reflected from the other (object). Thereby, the reflected wave from the water surface can be ignored. On the other hand, when the object that blocks the transmission wave is stopped, such as when the transmission wave is blocked by the inanimate object rather than the bather, or when the biological reaction of the bather is stopped, the transmission device 2 The frequency of the reflected wave that is received hardly varies from the frequency of the transmitted wave.

  Therefore, in this step S103, it is possible to determine whether or not the object is moving by examining the difference between the frequency of the transmitted wave and the frequency of the reflected wave due to the Doppler effect as described above. For example, the control unit 11 accesses the transmission device 2 and acquires information on the frequency of the transmission wave transmitted by the transmission device 2 and the frequency of the reflected wave received by the transmission device 2. Among these pieces of information, information on the frequency of the transmission wave transmitted by the transmission device 2 may be stored in the storage unit 12 in advance, and the control unit 11 acquires the information on the frequency of the transmission wave from the storage unit 12. May be.

  And the control part 11 compares the frequency of the transmission wave which the transmission apparatus 2 transmitted, and the frequency of the reflected wave which the transmission apparatus 2 received. As a result of the comparison, the control unit 11 may determine that the object is moving when there is a difference greater than or equal to a predetermined threshold between the frequency of the reflected wave and the frequency of the transmitted wave. On the other hand, the control unit 11 may determine that the object is not moving when there is no difference equal to or greater than a predetermined threshold between the frequency of the reflected wave and the frequency of the transmission wave.

  Note that the threshold value used for such determination may be appropriately set according to the embodiment. Further, the comparison process between the frequency of the transmission wave and the frequency of the reflected wave may be executed by the signal processing unit 24 of the transmission device 2 instead of the control unit 11. In this case, the control unit 11 acquires information indicating the result of the comparison processing (for example, information indicating the relative speed of the target object) from the signal processing unit 24, and whether the target object is moving based on the acquired information. Determine whether or not.

  Here, in the present embodiment, the transmission device 2 is configured to transmit a microwave as a transmission wave, and to receive a reflected wave reflected by the object. That is, the transmission device 2 is configured as a radar that can measure the position and the like of an object based on the transmitted wave and the reflected wave. The radar system of the transmission apparatus 2 may be appropriately selected according to the embodiment. For example, the pulse system, FM-CW (Frequency-Modulated Continuous Waves) system, dual frequency CW system, spread spectrum (SS) system, etc. It may be. The determination of whether or not the object is moving may be appropriately performed based on each method.

  And when the control part 11 determines with the target object moving as a result of the said determination, since the target object which interrupts | transmits a transmission wave is assumed to be the bather who is operating normally, following step S104 Is omitted, and the processing according to this operation example is terminated. On the other hand, when the control unit 11 determines that the object is not moving, the object that blocks the transmission wave is assumed to be an inanimate object and / or a bather whose biological reaction has stopped. Detect and proceed to the next step S104.

  If it is not determined whether or not the object is moving, this step S103 may be omitted. In this case, when the control unit 11 determines in step S102 that the transmission wave is blocked by the object, the control unit 11 omits the next step S104 and ends the process according to this operation example. In this case, the information processing apparatus 1 may not be configured to be able to acquire information from the transmission apparatus 2 and may not be connected to the transmission apparatus 2.

(Step S104)
In the next step S104, the control unit 11 functions as the notification unit 53 to notify that the bather is in an abnormal state in the bathroom when the abnormal state of the bather is detected in step S102 or step S103. Anomaly detection notification is performed. Thereby, the process according to this operation example is completed. Note that the means by which the control unit 11 performs the abnormality detection notification can be appropriately selected according to the embodiment.

  For example, when the bathroom abnormality detection system 10 is used in a facility such as a hospital, the information processing apparatus 1 can be connected to equipment such as a nurse call system via the external interface 15. In this case, the control part 11 may perform abnormality detection notification in cooperation with equipment such as the nurse call system. That is, the control unit 11 may control the nurse call system via the external interface 15. And the control part 11 may perform the call by the said nurse call system as abnormality detection notification. This makes it possible to appropriately notify a nurse or the like who watches the bather that the bather is in an abnormal state.

  For example, the control unit 11 may perform abnormality detection notification by outputting a predetermined sound from the speaker 14 connected to the information processing apparatus 1. When this speaker 14 is arranged around the bathroom 9, by performing such an abnormality detection notification with the speaker 14, the people around the bathroom 9 are informed that the bather is in an abnormal state. be able to.

  Further, for example, the control unit 11 may display a screen on the touch panel display 13 for notifying that an abnormal state of the bather has been detected as an abnormality detection notification. Further, for example, the control unit 11 may perform such an abnormality detection notification using an e-mail, a short message service, a push notification, or the like. When such an abnormality detection notification is performed, the e-mail address, telephone number, and the like of the user terminal that is the notification destination may be registered in the storage unit 12 in advance. And the control part 11 may perform abnormality detection notification using this e-mail address, telephone number, etc. which are registered beforehand.

(Other)
In addition, the control part 11 watches the said bather by repeating the process of said each step, when the bather is bathing in the bathroom 9. FIG. In the present embodiment, as described above, the time when the bather is immersed in the hot water or water in the bathtub 95 corresponds to the time when the bather is bathing in the bathroom 9. Therefore, in this embodiment, the control part 11 repeats the process of said each step, while a bather exists in the bathtub 95. FIG. Here, the method for detecting whether or not the bather exists in the bathtub 95 can include various methods, and may be appropriately selected according to the embodiment.

  As an example, when the bather enters the bathtub 95 and when the bather leaves the bathtub 95, it is assumed that many parts of the body of the bather enter the irradiation range of the transmission wave, and thus the shielding area that blocks the transmission wave. Becomes larger. That is, when the bather enters the bathtub 95 and when the bather leaves the bathtub 95, it is assumed that the reception level of the transmission wave at the receiving device 3 is the lowest.

  Therefore, the control unit 11 may access the reception device 3 and acquire the reception level of the transmission wave at the reception device 3 as in step S101. And even if the control part 11 detects whether the bather entered the bathtub 95 or the bather left the bathtub 95 by determining whether the acquired reception level became lower than the predetermined threshold value. Good.

  That is, when the control unit 11 detects for the first time that the reception level of the transmission wave at the receiving device 3 is lower than the predetermined threshold value, it is assumed that the bather has entered the bathtub 95 and the above operation example is performed. You may start the process which concerns. On the other hand, when the control unit 11 detects for the second time that the reception level of the transmission wave at the reception device 3 is lower than the predetermined threshold, the bather is taken out of the bathtub 95 and the above operation example is performed. You may stop the process which concerns. In addition, the predetermined threshold value regarding the detection of entry / exit of the bather 95 into the bathtub 95 is set to a value lower than the threshold value used in step S102.

  Similarly to step S102, the control unit 11 determines whether the acquired reception level has fallen so as to be included in the predetermined range, so that the bather has entered the bathtub 95 or the bather has You may detect whether it came out of the bathtub 95. FIG. Note that the predetermined range used for the determination is set to a value range lower than the range of the reception level when the transmission wave in step S102 is blocked by the object.

  Furthermore, the information processing apparatus 1 may be provided with an operation switch for operating the start and stop of the process according to the above operation example without performing the detection as described above. That is, when the operation switch for starting the process according to the operation example is operated, the control unit 11 may start the process according to the operation example, assuming that the bather enters the bathtub 95. On the other hand, when the operation switch for stopping the process according to the operation example is operated, the control unit 11 may stop the process according to the operation example, assuming that the bather has left the bathtub 95. Such an operation switch may be provided as a virtual switch to be displayed on the touch panel display 13.

(Action / Effect)
As described above, in the bathroom abnormality detection system 10 according to the present embodiment, the transmission device 2 is disposed on the front side wall 93 to receive an abnormal state such as the sinking or falling of the bather in the bathtub 95, and reception. The device 3 is arranged on the rear side wall 94. Specifically, the transmission wave transmitted from the transmission device 2 is not transmitted to the water surface in the bathtub 95, but on the water surface in the bathtub 95 between the front side wall 93 and the rear side wall 94 facing each other. The transmission device 2 and the reception device 3 are respectively arranged on the bathtub 95 so as to face each other so as to be transmitted along. Therefore, according to the present embodiment, transmission of transmission waves between the transmission device 2 and the reception device 3 can be performed without being greatly affected by the surface of hot water or cold water in the bathtub 95.

  Moreover, in this embodiment, the abnormal state of the bather in the bathroom 9 is detected based on the determination whether or not the transmission wave is blocked by the object in step S102. As described above, the determination as to whether or not the transmission wave is blocked by the object is easier than the process of determining the distance between the transmission device 2 and the object, and can be performed relatively accurately. it can.

  Therefore, the bathroom abnormality detection system 10 according to the present embodiment avoids poor detection of the state of the bather due to the influence of the water surface in the bathtub 95, and takes a bather based on the reception level of the transmission wave at the receiving device 3. It is possible to appropriately detect the abnormal state. Therefore, according to this embodiment, the bather who takes a bath in the bathroom 9 can be watched appropriately.

  In the above embodiment, the information processing apparatus 1 further determines whether or not the object is moving in step S103, so that the abnormal state of the bather that occurs when the transmission wave is blocked by the object is determined. Detect the possibility of Therefore, according to the above embodiment, even when there is an object that blocks the transmission wave, it is possible to detect an abnormal state of the bather, and erroneous detection of the state of the bather that may occur in the above case Can be prevented.

  Here, the detection of the movement of the object is highly likely to be erroneous when transmission waves are transmitted to the water surface in the bathtub 95. Because the water surface in the bathtub is displaced in the vertical direction due to the movement of the bather, etc., it is unclear whether the detected movement of the object is due to the water surface or due to the bather. Because there is a possibility of becoming. Therefore, when the transmission of the transmission wave is greatly affected by the water surface in the bathtub 95, the detection of the movement of the object in step S103 is likely to be erroneous.

  On the other hand, in the said embodiment, transmission of the transmission wave between the transmitter 2 and the receiver 3 can be implemented, without receiving the influence of the hot water of the bathtub 95 or the surface of cold water largely. Therefore, it is possible to accurately detect the movement of the object (particularly the bather). Moreover, even if the reflected wave is somewhat affected by the water surface in the bathtub 95, the movement of the bather and the water surface can be easily distinguished as described above, thereby removing the influence of the water surface. Can do. Therefore, according to the embodiment, it is possible to accurately determine whether or not the object is moving in step S103, and it is possible to accurately detect the state of the bather.

§4 Modifications Embodiments of the present invention have been described in detail above, but the above description is merely an illustration of the present invention in all respects. It goes without saying that various improvements and modifications can be made without departing from the scope of the present invention.

(1) Timing of notification processing For example, in the above-described embodiment, when it is determined that the bather is in an abnormal state, the control unit 11 immediately performs an abnormality detection notification in step S104. However, the timing at which the abnormality detection notification is performed may not be limited to such an example. For example, when the abnormal state of the bather continues for a certain time or longer, the control unit 11 may function as the notification unit 53 and perform abnormality detection notification.

  In this case, when the control unit 11 determines in step S102 that the transmission wave is not blocked by the object continuously for a certain time or in step S103, or in step S103, the object is not moving continuously. If it is determined, the process of step S104 is executed. On the other hand, when such a determination is not made at each step, the control unit 11 omits the process of step S104 and ends the process according to the operation example. In addition, the threshold value for determining whether the abnormal state of the bather continues for a certain time or more may be appropriately set according to the embodiment.

  In this way, only when the abnormal state of the bather continues for a certain time or longer, the abnormality detection notification is performed, so that the bather's state occurs for a moment when the abnormal state condition is satisfied. It is possible to prevent false reports of abnormality detection notifications. For example, when a bather sinks for a moment to put a face in a bathtub, the bather's state may be submerged for a moment. In such a case, for example, if an abnormality detection notification is made so as to be transmitted to the surroundings of the bathroom by the speaker 14 or the like, it will inform the people around the bathroom of a state different from the actual condition of the bather in the bathroom. , Misinformation will be conveyed to the people concerned. According to the modified example, it is possible to appropriately notify the bather's abnormality detection by preventing such a false alarm.

(2) Arrangement of Transmitting Device and Receiving Device In the above embodiment, the transmitting device 2 is arranged in the region of the front side wall 93 on the bathtub 95 side, and the receiving device 3 is arranged in the region of the rear side wall 94 on the bathtub 95 side. Has been placed. However, the arrangement of the transmission device 2 and the reception device 3 is not limited to such an example, and may be appropriately selected according to the embodiment. The transmission device 2 can be arbitrarily arranged on one of the pair of side walls of the bathroom facing each other so that the transmission wave is blocked by the bather normally bathing in the bathroom. Moreover, the receiving device 3 can be arbitrarily arrange | positioned so that the transmission wave from the transmitter 2 can be received on the other side wall of the pair of side walls of the bathroom facing each other. An arrangement example of the transmission device 2 and the reception device 3 will be described with reference to FIGS. 5, 6A, and 6B. In FIG. 5, FIG. 6A and FIG. 6B, the information processing apparatus 1 is omitted.

  FIG. 5 shows an example in which the transmission device 2 and the reception device 3 are arranged in the areas on the washing place 97 side of the front side wall 93 and the rear side wall 94, respectively. Thus, the transmitter 2 may be arranged in a region of the front side wall 93 on the side of the washing place 97, and the receiver 3 is arranged in a region of the rear side wall 94 on the side of the wash place 97 (portion 96). Also good. Further, the transmission device 2 and the reception device 3 may be interchanged, and the transmission device 2 may be disposed in one region of the rear side wall 94 on the washing place 97 side. You may arrange in.

  In this case, the time when the bather is present in the washing place 97 corresponds to the time when the bather is bathing in the bathroom 9. In addition, a state where the bather is normally present in the washing place 97 such as the bather washing his body in the washing place 97 corresponds to a state where the bather is normally bathing in the bathroom 9. Therefore, the transmitter 2 is arranged at such a height that the transmission wave is blocked by the bather in such a state. In this case, in step S102, when the control unit 11 determines that the transmitted wave is not blocked by the object, the bather falls into an abnormal state such as a fall, crouching, or lying in the washing place 97. Can be detected.

  6A and 6B show an example in which the transmission device 2 and the reception device 3 are arranged on the right side wall 91 and the left side wall 92, respectively. As described above, the transmission device 2 may be disposed on the right side wall 91, and the reception device 3 may be disposed on the left side wall 92. Further, the transmission device 2 and the reception device 3 may be interchanged, and the transmission device 2 may be disposed on the left side wall 92, or the reception device 3 may be disposed on the right side wall 91.

  In this case, the time when the bather is present in the bathtub 95 or the washing place 97 corresponds to the case where the bather is bathing in the bathroom 9. In addition, as described above, the state where the bather is normally present in the bathtub 95 or the washing place 97 corresponds to the state where the bather is normally bathing in the bathroom 9. Therefore, the transmitter 2 is arranged at such a height that the transmission wave is blocked by the bather in such a state. In this case, in step S102, when the control unit 11 determines that the transmission wave is not blocked by the object, the bather falls in the washing place 97, hangs down, lies down, or the like in the bathtub 95. It can be detected that the vehicle is in an abnormal state such as a fall or submergence.

  In this case, as illustrated in FIG. 6B, the device on the left side wall 92 side where the bathtub 95 is not arranged is such that transmission of the transmission wave is not completely blocked by the edge 951 of the bathtub 95. You may arrange | position lower than the apparatus by the side of the right side wall 91 in which the bathtub 95 is arrange | positioned. In FIG. 6B, the receiving device 3 is arranged slightly lower than the transmitting device 2. Therefore, as illustrated in FIG. 6B, the reflected wave from the water surface in the bathtub 95 can be blocked by the edge 951 of the bathtub 95. That is, by arranging the transmission device 2 and the reception device 3 in this way, the influence of the water surface in the bathtub 95 on the transmission of transmission waves performed between the transmission device 2 and the reception device 3 can be greatly reduced. Thereby, the abnormal state of the bather can be detected appropriately.

(3) Number of Installed Transmitting Devices and Receiving Devices In the embodiment and the modified example, one transmitting device 2 and one receiving device 3 are used. However, although the microwave (transmission wave) transmitted from the transmission device 2 is somewhat widened, it is difficult to cover the entire bathroom 9 with the microwave from one transmission device 2. That is, as illustrated in FIG. 1A, FIG. 5 and FIG. 6A, in the pair of transmission device 2 and reception device 3, it is difficult to detect an abnormal state of a bather that can occur throughout the bathroom 9, and A blind spot may occur in the detection range of the abnormal state of the person.

  Therefore, in order to reduce the blind spot in such a detection range, the number of transmission apparatuses 2 and reception apparatuses 3 may not be limited to one, but may be a plurality. Further, the number of installed transmission devices 2 and the number of installed reception devices 3 may or may not match. An example of the number of installed transmission apparatuses 2 and reception apparatuses 3 will be described with reference to FIGS. 7 to 9, the information processing apparatus 1 is omitted.

  FIG. 7 shows an example in which three transmission devices 2 are installed. In this manner, by arranging the three transmission devices 2 on the bathtub 95 densely, the blind spot in the detection range on the bathtub 95 is eliminated on the side where the transmission device 2 is disposed (the front wall 93 side in FIG. 7). can do. The number of transmission devices 2 is not limited to three, and may be two or four or more. Moreover, the transmission apparatus 2 may be arrange | positioned also at the washing place 97 side.

  Here, in FIG. 7, the number of receiving apparatuses 3 is one. However, the number of installed reception apparatuses 3 is not limited to one, and may be two or more, or may be the same as the number of transmission apparatuses 2. In addition, when receiving the transmission waves of a plurality of transmission apparatuses 2 with one reception apparatus 3, for example, the transmission waves have different frequencies among the plurality of transmission apparatuses 2, or the transmission waves are transmitted. The timing may be different. As a result, the transmission device 2 that is the transmission source of the received transmission wave can be identified on the reception device 3 side.

  FIG. 8 shows an example in which three receiving apparatuses 3 are installed. In this way, by arranging the three receiving devices 3 on the bathtub 95 densely, the blind spot in the detection range on the bathtub 95 is eliminated on the side where the receiving device 3 is arranged (the rear side wall 94 side in FIG. 8). can do. Note that the number of receiving devices 3 is not limited to three, and may be two or four or more. The receiving device 3 may also be arranged on the washing place 97 side.

  FIG. 9 shows an example in which two transmission devices 2 and two reception devices 3 are installed. In FIG. 9, one transmitting device 2 is arranged on the right side wall 91, and one receiving device 3 is arranged on the left side wall 92 accordingly. The other transmitter 2 is arranged on the front side wall 93, and the other receiver 3 is arranged on the rear side wall 94 accordingly.

  As illustrated in FIG. 9, when a plurality of transmission devices 2 and reception devices 3 are installed, one of the pair of side walls of the bathroom 9 facing each other and the bathroom 9 facing each other. At least one transmitter 2 may be arranged on one of the other pair of side walls. Further, at least one receiving device 3 is disposed on each of the other side wall of the pair of side walls of the bathroom 9 facing each other and on the other side wall of the other pair of side walls of the bathroom 9 facing each other. It's okay. In the example shown in FIG. 9, the combination of the right side wall 91 and the left side wall 92 facing each other and the combination of the front side wall 93 and the rear side wall 94 are the “one pair of side walls” and “the other pair of side walls” of the present invention, respectively. ".

  As illustrated in FIGS. 7 to 9 above, by using a plurality of at least one of the transmission device 2 and the reception device 3, the range for detecting the abnormal state of the bather can be expanded, The transmitter 2 and each receiver 3 can be associated with various states of the bather. Therefore, according to the modification, various kinds of abnormal states of the bather can be detected in a wider range in the bathroom 9.

  In addition, as illustrated in FIGS. 7 to 9, when a plurality of at least one of the transmission device 2 and the reception device 3 are used to detect an abnormal state of the bather, the above step S102 is performed as follows. It is processed as follows. That is, the control unit 11 detects the abnormal state of the bather when it is determined that the transmission wave is not blocked by the object for all combinations of the transmission device 2 and the reception device 3, and the next step The process proceeds to S104. On the other hand, when it is determined that the transmission wave is blocked by the target object in any one combination of the transmission device 2 and the reception device 3, the control unit 11 proceeds to the next step S103.

  When a plurality of transmission devices 2 and reception devices 3 are used, any combination of the transmission device 2 and the reception device 3 is used to detect that the bather has entered the bathroom 9 or bathing. It may be used to detect the type of abnormal state of the person. For example, when the bather enters the bathroom 9, the transmission device 2 and the reception device 3 may be arranged so that transmission of transmission waves is blocked by the door of the entrance 96 or the body of the bather. Thereby, the control part 11 can recognize that the bather entered / exited the bathroom 9 by detecting that the transmission wave was interrupted | blocked by the target object. Further, for example, the transmission device 2 and the reception device 3 may be arranged so that the transmission wave is blocked by a bather who falls into a predetermined abnormal state. Thereby, the control part 11 can recognize the classification of the abnormal state of a bather by detecting that the transmission wave was interrupted by the target object. Note that the control unit 11 excludes the transmission device 2 and the reception device 3 arranged in this way from the processing targets in step S102.

  For example, as illustrated in FIG. 10, when a plurality of transmission devices 2 and reception devices 3 are used, at least one set of the transmission device 2 and the reception device 3 is provided on the edge 951 of the bathtub 95. You may arrange | position so that a transmission wave may be transmitted along. FIG. 10 shows an example in which a set of the transmission device 2 a and the reception device 3 a is arranged on the edge 951 of the bathtub 95. In FIG. 10, the transmission device 2 a is positioned on the front side wall 93 so as to line up with the edge 951 of the bathtub 95 in the vertical direction. Correspondingly, the receiving device 3a is positioned by the rear side wall 94 so as to line up with the edge 951 of the bathtub 95 in the vertical direction. In FIG. 10, the information processing apparatus 1 is omitted.

  The transmission wave transmitted between the transmitting device 2a and the receiving device 3a arranged in this way is blocked by the bather's body when the bather enters and leaves the bathtub 95. Therefore, at least one set of the transmitter 2 and the receiver 3 is arranged so that the transmission wave is transmitted along the edge 951 of the bathtub 95, so that the bather enters or leaves the bathtub 95. Can be detected.

  For example, when the control unit 11 detects for the first time that the reception level of the transmission wave transmitted by the transmission device 2a at the reception device 3a is lower than a predetermined threshold, the bather enters the bathtub 95. Can be recognized. On the other hand, when the control unit 11 detects for the second time that the reception level of the transmission wave transmitted by the transmission device 2a at the reception device 3a is lower than a predetermined threshold, the bather leaves the bathtub 95. Can be recognized.

  Thereby, it is possible to prevent the bather from erroneously recognizing the state in which he has left the bathtub 95 as an abnormal state such as submergence. That is, when the transmission wave transmitted from the transmission device 2 illustrated in FIG. 10 is not blocked by the bather, the control unit 11 determines that the bather has entered an abnormal state by the process of step S102. . Therefore, even when the bather leaves the bathtub 95, the controller 11 may determine that the bather has entered an abnormal state. On the other hand, by arranging the transmitting device 2a and the receiving device 3a as illustrated in FIG. 10 and recognizing whether the bather has entered the bath 95 or out of the bath 95, the control unit 11 When the bather leaves the bathtub 95, it can be avoided to determine that the bather has entered an abnormal state. Therefore, at least one set of the transmitter 2 and the receiver 3 is arranged so that the transmission wave is transmitted along the edge 951 of the bathtub 95, so that the state where the bather leaves the bathtub 95 is regarded as an abnormal state. It is possible to prevent erroneous recognition.

  For example, as illustrated in FIG. 11, when a plurality of transmission apparatuses 2 and reception apparatuses 3 are used, a set of the transmission apparatus 2 and the reception apparatus 3 may be arranged in the vertical direction. This makes it possible to detect in which direction the bather has moved. For example, the control unit 11 keeps the reception level of the transmission wave at the lower receiving device 3 lower than a predetermined threshold, and the reception level of the transmission wave at the upper receiving device 3 is higher than the predetermined threshold. When this is detected, it is possible to detect that the bather is moving downward. When each set of the transmission device 2 and the reception device 3 is arranged on the bathtub 95, the control unit 11 detects the bather moving downward in this manner, so that the bather Can be recognized to be immersed in hot or cold water in the bathtub 95.

  On the other hand, after the reception level of the transmission wave at the lower receiving apparatus 3 becomes lower than the predetermined threshold, it is detected that the reception level of the transmission wave at the upper receiving apparatus 3 becomes lower than the predetermined threshold. In this case, the bather can detect that the bather is moving upward. When each set of the transmission device 2 and the reception device 3 is arranged on the bathtub 95, the control unit 11 detects the bather moving upward in this way, so that the bather Can recognize that he is about to leave the bathtub 95.

  Therefore, as illustrated in FIG. 11, it is possible to detect whether the bather has entered the bathtub 95 or has left the bathtub 95 by arranging the set of the transmission device 2 and the reception device 3 in the vertical direction. Therefore, similarly to the above, by arranging the set of the transmission device 2 and the reception device 3 in the vertical direction, it is possible to prevent the bather from erroneously recognizing the state of leaving the bathtub 95 as an abnormal state.

  As described above, by arranging the set of the transmission device 2 and the reception device 3 as illustrated in FIG. 10 and FIG. 11, the state in which the bather has left the bathtub 95 is erroneously recognized as an abnormal state. Can be prevented. Therefore, for example, the transmission device 2 and the reception device 3 illustrated in FIG. 10 have two sets in the vertical direction, and the transmission device 2a and the reception device 3a have two sets in the vertical direction. The device may be placed in the bathroom 9.

1 Information processing device,
5 ... Program, 6 ... Storage medium,
11 ... Control unit, 12 ... Storage unit, 13 ... Touch panel display,
14 ... Speaker, 15 ... External interface, 16 ... Communication interface,
17 ... drive,
51 ... Information acquisition unit, 52 ... Abnormality detection unit, 53 ... Notification unit, 2 ... Transmission device,
21 ... antenna unit, 22 ... transmitting circuit, 23 ... receiving circuit, 24 ... signal processing unit,
3 ... receiving device,
31 ... Antenna part, 32 ... Reception circuit, 33 ... Signal processing part,
10 ... Bathroom abnormality detection system,
9 ... Bathroom,
91 ... right side wall, 92 ... left side wall, 93 ... front side wall, 94 ... rear side wall,
95 ... bathtub, 951 ... edge,
96 ... Entrance, 97 ... Washing area

Claims (8)

A transmission device capable of transmitting a microwave as a transmission wave, wherein one of a pair of side walls of a bathroom facing each other is blocked by a bather normally bathing in the bathroom. A transmission device arranged in
A receiving device disposed on the other side wall of the pair of side walls of the bathroom facing each other so as to be able to receive a transmission wave from the transmitting device;
An information processing device for detecting an abnormal state in the bather's bathroom; and
With
The information processing apparatus includes:
When the bather is taking a bath in a bathroom, an information acquisition unit that acquires a reception level of the transmission wave transmitted from the transmission device at the reception device;
It is determined whether or not the transmission wave is blocked by an object based on the acquired reception level, and the transmission wave is irradiated when it is determined that the transmission wave is not blocked by the object. As the bather does not exist in the range, an abnormality detection unit for detecting an abnormal state of the bather,
When detecting an abnormal state of the bather, a notification unit for performing an abnormality detection notification for notifying that the bather is in an abnormal state in the bathroom;
Comprising
Bathroom anomaly detection system. The transmission device is configured to be able to receive a reflected wave reflected by an object transmitted from the device itself,
When the abnormality detection unit determines that the transmission wave is blocked by the object as a result of the determination, based on the difference between the frequency of the transmission wave and the frequency of the reflected wave, the object Further detecting whether or not the object is moving, and detecting the abnormal state of the bather when it is determined that the object is not moving,
The bathroom abnormality detection system according to claim 1. The notification unit performs the abnormality detection notification when the abnormal state of the bather is detected continuously for a predetermined time or more when the abnormal state of the bather is detected.
The bathroom abnormality detection system according to claim 1 or 2. A plurality of the transmission devices are provided,
The bathroom abnormality detection system according to any one of claims 1 to 3. A plurality of the receiving devices are provided,
The bathroom abnormality detection system according to any one of claims 1 to 4. A plurality of the transmission devices are provided,
A plurality of the receiving devices are provided,
The plurality of transmitters are disposed on one side wall of the pair of side walls of the bathroom facing each other and on one side wall of the other pair of side walls of the bathroom facing each other,
The plurality of receiving devices are arranged on the other side wall of the pair of side walls of the bathroom facing each other and on the other side wall of the other pair of side walls of the bathroom facing each other.
The bathroom abnormality detection system according to any one of claims 1 to 5. A transmission device configured to be able to transmit a microwave as a transmission wave, wherein the transmission wave is transmitted to one of the pair of side walls of the bathroom facing each other by a bather normally bathing in the bathroom. Together with a transmission device arranged to be blocked and a reception device arranged to receive the transmission wave from the transmission device on the other of the pair of side walls of the bathroom opposite to each other The computer used is
When the bather is taking a bath in a bathroom, obtaining a reception level of the transmission wave transmitted from the transmission device at the reception device;
It is determined whether or not the transmission wave is blocked by an object based on the acquired reception level, and the transmission wave is irradiated when it is determined that the transmission wave is not blocked by the object. Detecting the abnormal state of the bather, assuming that the bather does not exist in a range;
When detecting an abnormal state of the bather, performing an abnormality detection notification for notifying that the bather is in an abnormal state in the bathroom;
Execute bathroom abnormality detection method. A transmission device configured to be able to transmit a microwave as a transmission wave, wherein the transmission wave is transmitted to one of the pair of side walls of the bathroom facing each other by a bather normally bathing in the bathroom. Together with a transmission device arranged to be blocked and a reception device arranged to receive the transmission wave from the transmission device on the other of the pair of side walls of the bathroom opposite to each other To the computer used,
When the bather is taking a bath in a bathroom, obtaining a reception level of the transmission wave transmitted from the transmission device at the reception device;
It is determined whether or not the transmission wave is blocked by an object based on the acquired reception level, and the transmission wave is irradiated when it is determined that the transmission wave is not blocked by the object. Detecting the abnormal state of the bather, assuming that the bather does not exist in a range;
When detecting an abnormal state of the bather, performing an abnormality detection notification for notifying that the bather is in an abnormal state in the bathroom;
An anomaly detection program for bathrooms.

Images