JP2021097797A - Biological information detection device and biological information communication system - Google Patents

Abstract

To provide a biological information detection device capable of accurately detecting a cyclical vital sign (biological information) on a subject and grasping the subject's state even when the subject is on a carpet.SOLUTION: A biological information detection device includes a mat for biological information detection, a biological information detection unit for detecting cyclical biological information on a subject, an odor detection unit for detecting odor information on an odor, and a determination unit for determining the subject's state on the basis of the biological information and the odor information. The mat for biological information detection includes an air bag, a plate-like cushion member in which a recess of roughly the same size as the air bag is formed in the central part, and the air bag is fitted into the recess, and a pair of synthetic resin plate-like members of roughly the same size as the plate-like cushion member, which is formed so as to be curved wholly, and provided so as to sandwich the plate-like cushion member. The biological information detection unit detects the biological information on the basis of the air pressure from the mat for biological information detection.SELECTED DRAWING: Figure 4

Description

The present invention relates to a biometric information detection device and a biometric information communication system.

Conventionally, a biological information collecting device for collecting biological information of a human body without attaching electrodes, lead wires, or the like to the human body has been disclosed (see Patent Document 1). The technique of Patent Document 1 is to detect the air pressure in the air bag with an omnidirectional microphone or a Vital sensor (pneumatic dynamic pressure sensor) regardless of the position on the plate-shaped member. It can measure breathing, heart rate, etc.

Japanese Patent No. 3419732

The technique of Patent Document 1 requires a plate-shaped member having a sufficient size for a human body to ride on. However, it is not easy to prepare a plate-shaped member having a size that allows a human body to ride on it, and it is inconvenient to carry.

On the other hand, if the size of the plate-shaped member is reduced, there is a problem that the biological information of the human body cannot be detected accurately when a rug such as a mattress is interposed between the plate-shaped member and the human body.

In addition, among elderly people with dementia and bedridden conditions, the number of non-caregivers who cannot notify their caregivers of their excretion is increasing. The caregiver should regularly observe the excretion status of the non-caregiver, and if there is excretion, immediately take measures for excretion. If proper excretion measures are not taken, bedding and clothes may become dirty due to excrement, and the stress and health of non-caregivers may be affected.

The present invention has been proposed in view of such circumstances, and even when the subject is on a rug, the periodic biometric information of the subject is detected with high accuracy, and the subject's An object of the present invention is to provide a biometric information detection device and a biometric information communication system capable of grasping a state.

The biometric information detection device according to the present invention includes a biometric information detection mat placed under the subject via a rug, a biometric information detection unit that detects the periodic biometric information of the subject, and an odor related to odor. The living body includes an odor detecting unit that detects information, a temperature / humidity detecting unit that detects indoor temperature and humidity, and a determination unit that determines the state of the subject based on the biological information and the odor information. The information detection mat is formed in a long shape, and an air bag that outputs air according to the pressure from the living body and a recess having a size substantially the same as that of the air bag are formed in the central portion, and the air is formed in the recess. A plate-shaped cushion member having a thickness substantially the same as the thickness of the air bag into which the bag is fitted and a plate-shaped cushion member having substantially the same size as the plate-shaped cushion member and formed to be generally bendable, the plate-shaped cushion member. It has a pair of synthetic resin plate-like members provided so as to sandwich the biometric information, and the biometric information detecting unit detects the biometric information based on the air pressure from the biometric information detecting mat. ..

According to the present invention, even when the subject is on the rug, the periodic biological information of the subject can be detected with high accuracy and the state of the subject can be grasped.

FIG. 1 is a front view showing a schematic configuration of the biological information detection device according to the first embodiment. FIG. 2 is a diagram showing a configuration of a sensor mat of the biological information detection device according to the first embodiment. FIG. 3 is an exploded perspective view showing the configuration of the sensor board according to the first embodiment. FIG. 4 is a block diagram showing a functional configuration of the main body according to the first embodiment. FIG. 5 is a waveform diagram of a respiratory signal when the air pad alone is arranged under the rug when the weight of the measurement target is 2 kg. FIG. 6 is a waveform diagram of a respiratory signal when the sensor mat is placed under the rug when the weight of the measurement target is 2 kg. FIG. 7 is a waveform diagram of a respiratory signal when the air pad alone is placed under the rug when the weight of the measurement target is 6 kg. FIG. 8 is a waveform diagram of a respiratory signal when the sensor mat is placed under the rug when the weight of the measurement target is 6 kg. FIG. 9 is a waveform diagram of a heartbeat signal when the air pad alone is arranged under the rug. FIG. 10 is a waveform diagram of a heartbeat signal when the sensor mat is placed under the rug. FIG. 11 is a diagram showing a configuration of a biometric information communication system according to the second embodiment. FIG. 12 is a front view showing the sensor mat cover. FIG. 13 is a perspective view showing the sensor mat cover. FIG. 14 is a diagram showing a configuration of a biological information detection device according to a third embodiment. FIG. 15 is an exploded perspective view showing the configuration of the sensor board according to the third embodiment. FIG. 16 is a cross-sectional view of the configuration of the sensor board according to the third embodiment. FIG. 17 is a block diagram showing a functional configuration of the main body according to the third embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[First Embodiment]
FIG. 1 is a front view showing a schematic configuration of the biological information detection device 1 according to the first embodiment. The biological information detection device 1 detects biological information such as heart rate and respiratory rate from a person whose body information is detected (hereinafter referred to as “target person”), and performs data communication with an external device. In the present embodiment, the biological information detection device 1 detects, for example, the respiratory rate per minute of a sleeping subject 100 (infant, infant, etc.).

The biological information detection device 1 includes a sensor mat 10 arranged under the sleeping subject 100, a main body 50 that calculates the respiratory rate of the subject 100 based on the air pressure output from the sensor mat 10, and a sensor. It includes a silicon tube 70 that supplies the air output from the mat 10 to the main body 50. Although not shown, a rug such as a mattress is placed between the subject 100 and the sensor mat 10.

FIG. 2 is a diagram showing the configuration of the sensor mat 10.
The sensor mat 10 includes a sensor mat cover 20 and two sensor boards 30 housed in the sensor mat cover 20. A Y-shaped connector 71, which is a Y-shaped tube, is joined to the end portion (sensor mat 10 side) of the silicon tube 70.

On the other hand, the air ports of each sensor board 30 are joined to the remaining two joints of the Y-shaped connector 71 via the silicon tube 72, respectively. Therefore, the air discharged from each sensor board 30 joins at a Y-shaped connector via each silicon tube 72, and is supplied to the main body 50 shown in FIG. 1 via the silicon tube 70.

The sensor mat cover 20 is a rectangular cover, and has two bag portions 21 in which the two sensor boards 30 are housed and a lid portion that functions so that the sensor board 30 is not outside the bag portion 21. 22 and.

Each bag portion 21 is configured to have a shape and size that can completely accommodate one sensor board 30. Each bag portion 21 is arranged so as to be symmetrical with respect to a central axis orthogonal to the central portion in the longitudinal direction of the sensor mat cover 20. Therefore, the sensor mat cover 20 can be folded in two at the above-mentioned central axis in a state where the sensor board 30 is housed in each bag portion 21.

The sensor board 30 is arranged under the rug on which the subject 100 is located. The sensor board 30 outputs air corresponding to movements such as respiratory movements and pulsations of the subject 100, and supplies the air to the main body 50 via a silicon tube 70 or the like.

FIG. 3 is an exploded perspective view showing the configuration of the sensor board 30. The sensor board 30 is a substantially square plate-shaped member, and outputs air according to movements (pressure) such as respiratory movements and pulsations of the subject 100. The sensor board 30 includes a first polyvinyl chloride plate 31, a second polyvinyl chloride plate 32, a cushion member 33, and an air pad 34.

The first and second polyvinyl chloride plates 31 and 32 are, for example, polyvinyl chloride formed in a substantially square plate shape. The first and second polyvinyl chloride plates 31 and 32 have a hard surface and are formed to be curbable as a whole. The thickness of the first and second polyvinyl chloride plates 31, 32 is, for example, 1 mm. The corners of the first and second polyvinyl chloride plates 31 and 32 are rounded, for example, by 5 mm.

It is also conceivable to use an acrylic plate or a veneer plate instead of the first and second polyvinyl chloride plates 31, 32. However, since the veneer plate is not bendable, it is not suitable as a substitute for the first and second polyvinyl chloride plates 31, 32. On the other hand, the acrylic plate can be a substitute for the first and second polyvinyl chloride plates 31 and 32 if it is formed to have a bendable thickness. That is, the first and second polyvinyl chloride plates 31 and 32 can be substituted as long as they are plate-shaped members made of a synthetic resin material that are formed to be bendable as a whole.

The cushion member 33 is made of a polyurethane material having a thickness of, for example, 5 mm. The cushion member 33 is formed in the shape of a square plate having substantially the same size as the first and second polyvinyl chloride plates 31 and 32.

A recess 33a having a size enough to fit the air pad 34 is formed in the central portion of the cushion member 33 along the axis of symmetry. When the air pad 34 is fitted into the recess 33a of the cushion member 33, the surface of the air pad 34 is at substantially the same position as the surface of the cushion member 33.

The air pad 34 is an air bag formed in a long shape. An air pipe 34a having a predetermined length is provided at the air port of the air pad 34. One side of the air pipe 34a is inside the air pad 34. The other side of the air pipe 34a is exposed to the outside of the air pad 34 and is joined to the silicon tube 72.

Further, a cushion member made of a polyurethane material is contained inside the air pad 34. Therefore, the air pad 34 has a predetermined thickness (10 mm in the present embodiment) and has air inside even in a normal state (without external pressure). When an external pressure from the subject 100 is applied to the air pad 34, air is output from the air pad 34 according to the external pressure. The air output from the air pad 34 is supplied to the main body 50 via the silicon tube 70.

FIG. 4 is a block diagram showing a functional configuration of the main body 50.
The main body 50 includes a piezoelectric element 51, a filter circuit 52, a maximum value detector 53, a counter 54, a biological information detection unit 55, and a transmission unit 56.

The piezoelectric element 51 outputs a signal corresponding to the vibration of the air supplied from the silicon tube 70. The filter circuit 52 removes a predetermined band component from the signal supplied from the piezoelectric element 51. The filter characteristics of the filter circuit 52 are set to characteristics suitable for extracting the respiratory component of the human body from the signal output from the piezoelectric element 51. Therefore, the filter circuit 52 removes the noise component and outputs the respiration signal. The frequency characteristics of the filter circuit 52 can be changed according to the biological information to be detected. For example, when the filter circuit 52 is a high-pass filter (for example, removing band components of 3 Hz or less), another biometric signal, for example, a heartbeat signal, is obtained instead of the respiratory signal.

The maximum value detector 53 outputs a positive pulse each time it detects the maximum value (peak value) of the respiratory signal supplied from the filter circuit 52. The counter 54 has a timer function, counts positive pulses supplied from the maximum value detector 53, and resets every predetermined time (for example, 10 seconds). Then, each time the counter 54 resets, the count value at that time is supplied to the biological information detection unit 55.

The biological information detection unit 55 calculates a value obtained by multiplying the respiratory rate supplied from the counter 54 by 6, and supplies the calculated value to the transmission unit 56 as the respiratory rate per minute. The transmission unit 56 transmits the respiratory rate supplied from the biological information detection unit 55 to the information terminal device of the operator. As a result, the operator can confirm the respiratory rate of the subject 100 in real time.

The information terminal device may issue an alarm when the respiratory rate of the subject 100 continuously falls below the threshold value for a predetermined time or more. As a result, the operator can immediately grasp the state in which the respiratory rate of the subject 100 is no longer detected.

As described above, the biological information detection device 1 according to the present embodiment detects the respiratory rate of the subject 100 on the sensor mat 10 in real time and transmits the respiratory rate to the information terminal device of the operator. As a result, the operator can grasp the respiratory rate of the subject 100 in real time.

Further, the biological information detection device 1 allows the subject 100 to breathe by arranging the sensor mat 10 shown in FIG. 3 under the rug even when the subject 100 is on a rug such as a mattress. The number can be detected accurately.

[Comparative measurement 1]
The breathing signal (output signal of the filter circuit 52) when the air pad alone was placed under the rug and the breathing signal when the sensor mat 10 shown in FIG. 3 was placed under the rug were measured. The measurement conditions are as follows.

-Measure the air pad alone and the sensor mat 10 individually.
-The air pad alone is the same as the air pad 34 in the sensor mat 10.
The size of the first and second polyvinyl chloride plates 31 and 32 of the sensor mat 10 is 40 cm × 40 cm and the thickness is 1 mm.
-The thickness of the cushion member 33 (polyurethane material) of the sensor mat 10 is 5 mm.

-Place a 2.5 cm thick rug on the air pad alone and the sensor mat 10.
・ Install a breathing simulator on the rug at a position 20 cm from the center of the air pad.
-The average respiratory rate of the breathing simulator is 30 [times / minute].
-Use two types of weight to be measured, 2 kg and 6 kg.

FIG. 5 is a waveform diagram of a respiration signal (output signal of the filter circuit 52) when the air pad alone is arranged under the rug when the weight of the measurement target is 2 kg. FIG. 6 is a waveform diagram of a respiratory signal when the sensor mat 10 shown in FIG. 3 is arranged under the rug when the weight of the measurement target is 2 kg.

FIG. 7 is a waveform diagram of a respiratory signal when the air pad alone is placed under the rug when the weight of the measurement target is 6 kg. FIG. 8 is a waveform diagram of a respiratory signal when the sensor mat 10 shown in FIG. 3 is arranged under the rug when the weight of the measurement target is 6 kg. In FIGS. 5 to 8, the vertical axis direction represents the magnitude of the signal, and the horizontal axis direction represents the time.

According to FIGS. 5 to 8, in both cases where the weight of the measurement target is 2 kg and 6 kg, the amplitude of the breathing signal obtained from the sensor mat 10 is larger than that of the breathing signal obtained from the air pad alone. It was. That is, the sensor mat 10 had higher respiration detection sensitivity than the air pad alone.

As described above, the biological information detection device 1 according to the embodiment of the present invention uses a plate-shaped member having a size capable of covering the entire length of the subject 100 by using the sensor mat 10 having the configuration shown in FIG. It is possible to detect the respiratory rate of the subject 100.

Further, the biological information detection device 1 can detect the respiratory rate of the subject 100 with high accuracy even when a rug such as a mattress is interposed between the subject 100 and the sensor mat 10. ..

The present invention is not limited to the above-described embodiment, and is also applicable to those whose design has been modified within the scope of the matters described in the claims. For example, the sizes and thicknesses of the first and second polyvinyl chloride plates 31, 32 and the cushion member 33 are not limited to the above-mentioned examples.

Further, although the counter 54 shown in FIG. 4 resets the count value every 10 seconds, the count value may be reset at other cycles. Specifically, the counter 54 may reset the count value every 20 seconds or every 30 seconds. In this case, the biological information detection unit 55 may triple or double the count value from the counter 54 to obtain the respiratory rate for one minute.

Further, the biological information detection device 1 can not only detect the respiratory rate of the subject 100, but also detect the heart rate of the subject 100. In this case, the filter characteristics of the filter circuit 52 are set to characteristics suitable for extracting the heartbeat component of the human body from the signal output from the piezoelectric element 51.

[Comparative measurement 2]
The heartbeat (pulsation) signal (output signal of the filter circuit 52) when the air pad alone was placed under the rug and the heartbeat signal when the sensor mat 10 shown in FIG. 3 was placed under the rug were measured. .. The measurement conditions are as follows.

-Measure the air pad alone and the sensor mat 10 individually.
-The air pad alone is the same as the air pad 34 in the sensor mat 10.
The size of the first and second polyvinyl chloride plates 31 and 32 of the sensor mat 10 is 40 cm × 40 cm and the thickness is 1 mm.
-The thickness of the cushion member 33 (polyurethane material) of the sensor mat 10 is 5 mm.
-Place a 2.5 cm thick rug on the air pad alone and the sensor mat 10.

-Install a pseudo heartbeat signal generator on the rug at a position 20 cm from the center of the air pad. The pseudo heartbeat signal generator is a device that connects an amplifier and a speaker to a function generator to vibrate the speaker at an arbitrary cycle, and generates a pseudo heartbeat body movement by setting the heartbeat cycle.
-The average heart rate of the simulated heart rate signal generator is 84 [times / minute].
-Use 580 g (1 type) of weight to be measured. (Because it is difficult to change the weight due to the limitation of the simulated heart rate signal generator)

FIG. 9 is a waveform diagram of a heartbeat signal (output signal of the filter circuit 52) when the air pad alone is arranged under the rug. FIG. 10 is a waveform diagram of a heartbeat signal when the sensor mat 10 shown in FIG. 3 is arranged under the rug. In FIGS. 9 and 10, the vertical axis direction represents the magnitude of the signal, and the horizontal axis direction represents the time.

According to FIGS. 9 and 10, the amplitude of the heartbeat signal obtained from the sensor mat 10 was larger than that of the heartbeat signal obtained from the air pad alone. That is, the sensor mat 10 had higher heartbeat detection sensitivity than the air pad alone.

As described above, the biological information detection device 1 according to the embodiment of the present invention uses a sensor mat 10 having a size less than half of the total length of the target person 100, thereby covering the total length of the target person 100. The heart rate of the subject 100 can be detected without using the shape member.

The biological information detection device 1 can detect the heart rate of the subject 100 with high accuracy even when a rug such as a mattress is interposed between the subject 100 and the sensor mat 10. The biological information detection device 1 can also detect the respiratory rate and the heart rate at the same time. In this case, the biological information detection device 1 may include each block shown in FIG. 4 for detecting the respiratory rate and each block shown in FIG. 4 for detecting the heart rate.

[Second Embodiment]
FIG. 11 is a diagram showing the configuration of the biometric information communication system 200 according to the second embodiment.
The biometric information communication system 200 includes a biometric information detection device 1 shown in FIG. 1, an information terminal device 220 capable of data communication, and a biometric information management server that manages biometric information and distributes information about the human body to the information terminal device 220. It is equipped with 230.

In FIG. 1, three biometric information detection devices 1 and three information terminal devices 220 are shown, and one biometric information management server 230 is shown. However, the number of the biometric information detection device 1 and the information terminal device 220 is not particularly limited, and is provided according to the number of subjects who should detect the biometric information. Further, the biometric information management server 230 may be one, or may be provided in plurality for load balancing.

The biological information detection device 1 detects biological information such as heart rate and respiratory rate from a sleeping subject. Further, the biological information detection device 1 also detects temperature, humidity, room brightness, noise, odor, atmospheric pressure, and the like as environmental information. The biological information detection device 1 automatically records the detected biological information and environmental information in the internal memory, and transmits the detected biological information and environmental information to the biological information management server 230 shown in FIG. 1 via the Internet in real time or at a predetermined timing. ..

In addition, the biometric information detection device 1 stores the personal information (age, gender, residential area (location information), level of care required, etc.) of the target person in advance, and transmits this personal information to the biometric information management server 230. .. The biometric information detection device 1 can also directly perform data communication with the information terminal device 220 by wireless communication, infrared communication, or the like without going through the biometric information management server 230.

The information terminal device 220 is a terminal that can be connected to an Internet line by wire or wirelessly. The information terminal device 220 corresponds to, for example, a so-called smartphone, tablet terminal, mobile phone, small personal computer, or the like. The information terminal device 220 is owned by a person who wants to confirm the state of the target person such as a doctor, a nurse, a caregiver, and a relative of the target person.

The information terminal device 220 includes biometric information and warning information transmitted from the biometric information management server 230 (for example, warning information that the respiratory rate of the subject 100 has continuously fallen below the threshold for a predetermined time or more, and a warning that the subject has left the bed. Information), and other information is displayed. As a result, the user can check the biological information and other information of the target person, and can grasp the heart rate of the target person and the presence or absence of getting out of bed even when the user is away from the target person. Further, the information terminal device 220 can also send and receive information such as a text document, an image, and a voice to and from the biometric information detection device 1 via the biometric information management server 230.

The information terminal device 220 can also directly communicate with the biometric information detection device 1 without going through the biometric information management server 230. In this case, the information terminal device 220 presents the above-mentioned warning information to the user based on the biometric information from the biometric information detection device 1.

The biometric information management server 230 transmits the biometric information transmitted from the biometric information detection device 1 to a predetermined information terminal device 220. The biometric information management server 230 can also determine whether the subject's respiratory rate is normal or whether he / she has left the bed based on the biometric information transmitted from the biometric information detection device 1.

For example, the biometric information management server 230 determines that the subject has left the bed when the biometric information transmitted from the biometric information detection device 1 is interrupted for a predetermined time (for example, 20 seconds), and provides warning information indicating that the subject has left the bed. It transmits to the device 220. Further, the biometric information management server 230 is abnormal when the heart rate transmitted from the biometric information detection device 1 continuously becomes 30 or less or 170 or more for a predetermined time (for example, 2 minutes). Warning information indicating that may be transmitted to the information terminal device 220.

Further, the biometric information management server 230 aggregates biometric information and personal information from all the target persons connected on the network, and statistical data according to the target person's residential area, season, level of care required, and environmental information. (Big data) can also be created. According to this statistical data, for each target person (for example, a man in his 60s, residential area: Hokkaido, level 3 requiring nursing care, etc.) who meets any condition, if the environmental information is in any state, the biometric information is available. It becomes possible to grasp whether it is stable.

In this case, when the biometric information management server 230 receives the biometric information and the environmental information from the arbitrary biometric information detection device 1, the biometric information management server 230 compares the received information with the statistical data. Then, when the biometric information management server 230 detects an abnormality in the biometric information of the subject (such as a large change in heartbeat or respiratory rate), the biometric information management server 230 creates an environment in which the biometric information is stable based on statistical data. Warning information for prompting is transmitted to the biological information detection device 1 and the information terminal device 220. As a result, the user of the biological information detection device 1 or the information terminal device 220 can check the warning information and adjust the environment (room temperature, humidity, etc.) of the target person to the optimum state.

It should be noted that the present invention is not limited to the above-described embodiment, and can be applied to those whose design has been changed within the scope of the matters described in the claims. The present invention is also applicable to, for example, a smart house with a long-term care service.

A space / human sensor and an infrared sensor are incorporated in the LED lighting device in the smart house (indoor). A plurality of LED lighting devices having such a configuration are provided at each indoor location (corridor, bath, toilet, bedroom, etc.) in a state of being connected to the network, and detect the indoor position information of the patient.

The LED lighting device may communicate with a wristwatch-type communication device attached to the patient's arm. This communication device communicates with the LED lighting device while attached to the patient's arm, for example, by Bluetooth®. The LED lighting device detects the indoor position information of the patient by communicating with the above-mentioned communication device. The location information is transmitted to the biometric information management server 230 shown in FIG. 10 via the Internet, and then transmitted to, for example, the user's information terminal device 220.

As a result, the information terminal device 220 constantly outputs the patient's position information based on the patient's position information transmitted from the LED lighting device. This allows the user to know not only the patient's health condition in the bedroom, but also the patient's indoor whereabouts and whether the patient has gone out (wandered).

When the information terminal device 220 can control the air conditioner, the humidifier, and the dehumidifier (hereinafter referred to as "air conditioner and the like") in the smart house, the biological information management server 230 can also perform the following control. For example, the biometric information management server 230 directly controls the heating / cooling device and the like via the information terminal device 220 so that the environment is such that the biometric information is stable based on the statistical data. As a result, the biometric information management server 230 can remotely control the air conditioner and the like in the smart house so that the environment of the target person is automatically optimized.

Further, instead of the sensor mat cover 20 shown in FIG. 2, the following sensor mat cover can also be used. FIG. 12 is a front view showing the sensor mat cover 20A. FIG. 13 is a perspective view showing the sensor mat cover 20A.

The sensor mat cover 20A is a cover having a rectangular shape, and includes two bag portions 21 for accommodating two sensor boards 30, a fastener 25 for opening and closing the opening of the bag portion 21, and a bag portion. A tube protective bag 26 for storing and protecting the tube, which is a space between the 21 and the fastener 25, and handles 27 provided on both sides of the sensor mat cover 20A in the longitudinal direction are provided. Although not shown, a sensor fastener for fixing the sensor board 30 is provided between the bag portion 21 and the tube protection bag 26.

Each bag portion 21 is configured to have a shape and size that can completely accommodate one sensor board 30. The bag portions 21 are arranged so as to be symmetrical with respect to the central axis in the central portion in the longitudinal direction of the sensor mat cover 20. Therefore, the sensor mat cover 20 can be folded in two at the above-mentioned central axis in a state where the sensor board 30 is housed in each bag portion 21.

A sponge 80 arranged on one surface (surface) of the sensor board 30 is housed in each bag portion 21 together with the sensor board 30. Then, when the sensor fastener is closed, the positions of the sensor board 30 and the sponge 80 are fixed inside each bag portion 21.

The biological information detection device 1 configured as described above can detect biological information such as respiratory rate with high accuracy not only for adults but also for infants having a body weight (3 to 10 kg) that is generally difficult to detect. can do.

Further, if the size of the sensor board 30 (first and second polyvinyl chloride plates 31, 32) is increased without changing the size of the air pad 34 (see FIG. 3), the biological information detection device 1 can be used. The detectable range of the biological information of the subject can be expanded in proportion to the size.
Further, since the sensor board 30 has a sponge 80 inside, it can be used as a single mattress, and can be used even when it is laid under a mat or a futon.

[Third Embodiment]
Next, the biometric information communication system 200 according to the third embodiment will be described.
The biometric information communication system 200 includes a biometric information detection device 1, an information terminal device 220, and a biometric information management server 230.

FIG. 14 is a diagram showing the configuration of the biological information detection device 1 according to the third embodiment. The biological information detection device 1 includes a sensor mat 10, a main body 50, and a silicon tube 70.

The sensor mat 10 includes a sensor mat cover 20 and a sensor board 30.

The sensor mat cover 20 is a cover formed in a rectangular shape, and has one bag portion 21 in which one sensor board 30 is housed and a lid portion 22 that functions so that the sensor board 30 is not outside the bag portion 21. And have.

The sensor board 30 is arranged under the rug on which the subject 100 is located. The sensor board 30 outputs air corresponding to movements such as respiratory movements and pulsations of the subject 100, and supplies the air to the main body 50 via a silicon tube 70 or the like.

FIG. 15 is an exploded perspective view showing the configuration of the sensor board 30 according to the third embodiment. FIG. 16 is a cross-sectional view of the configuration of the sensor board 30 according to the third embodiment. The sensor board 30 is a substantially rectangular plate-shaped member, and outputs air according to movements (pressure) such as respiratory movements and pulsations of the subject 100. The sensor board 30 includes a first polypropylene plate 131, a second polypropylene plate 132, a cushion member 33, and an air pad 34. The length of the sensor board 30 in the longitudinal direction is approximately the same as, for example, the length of the width of a rug such as a mattress used by the subject 100 (the length in the width direction orthogonal to the height direction of the subject 100).

The first and second polypropylene plates 131 and 132 are plate-shaped members made of a synthetic resin material that are formed so as to be entirely bendable.

The cushion member 33 is fixed to the first and second polypropylene plates 131 and 132 with a fixing material 35 such as a heat-resistant tape, a hook-and-loop fastener, a double-sided tape, and an adhesive. The cushion member 33 is provided with fixing members 35 at a total of eight locations, for example, four rectangular corners and four intermediate portions of adjacent corners, and the first and second polypropylene plates 131, It is fixed to 132. For example, the fixing material 35 such as a heat-resistant tape formed in a long shape is provided over the upper surface of the first polypropylene plate 131, the side surface of the cushion member 33, and the lower surface of the second polypropylene plate 132. , Sticked. The fixing member 35 may be provided on the upper surface and the lower surface of the cushion member 33, respectively.

The upper surface and the lower surface of the air pad 34 are fixed to the first and second polypropylene plates 131 and 132 by a fixing material 36 such as a double-sided tape, a hook-and-loop fastener, and an adhesive.

FIG. 17 is a block diagram showing a functional configuration of the main body 50 according to the third embodiment.
The main body 50 includes a piezoelectric element 51, a filter circuit 52, a maximum value detector 53, a counter 54, a biological information detection unit 55, a transmission unit 56, an odor detection unit 57, a sound collection unit 58, and the like. A determination unit 59 and a notification unit 60 are provided. The main body 50 includes a CPU, a RAM, and a storage unit, and each function shown in FIG. 5 is realized by the CPU executing a program stored in the storage unit or the like using the RAM as a work area. ..

The piezoelectric element 51 outputs a signal corresponding to the vibration of the air supplied from the silicon tube 70. The filter circuit 52 removes a predetermined band component from the signal supplied from the piezoelectric element 51. The filter characteristics of the filter circuit 52 are set to characteristics suitable for extracting the respiratory component and the snoring component of the human body from the signal output from the piezoelectric element 51. Therefore, the filter circuit 52 removes the noise component, extracts the respiratory component from the first frequency band, and extracts the snoring component from the second frequency band different from the first frequency band. Since the swing width of the breathing signal differs from the swing width of the snoring signal by about 100 times, the filter circuit 52 can output the breathing signal and the snoring signal.

The maximum value detector 53 outputs a positive pulse each time it detects the maximum value (peak value) of the respiratory signal and the snoring signal supplied from the filter circuit 52. The counter 54 has a timer function, counts each positive pulse supplied from the maximum value detector 53, and resets the counter 54 at predetermined time (for example, 10 seconds). Then, each time the counter 54 resets, the count value at that time is supplied to the biological information detection unit 55.

The biological information detection unit 55 calculates a value obtained by multiplying the respiratory rate and the number of snoring supplied from the counter 54 by 6, and supplies the calculated value to the transmission unit 56 as the respiratory rate and the number of snoring per minute. The transmission unit 56 transmits the respiratory rate and the number of snoring supplied from the biological information detection unit 55 to the information terminal device of the operator. As a result, the operator can confirm the respiratory rate and the number of snoring of the subject 100 in real time.

The odor detecting unit 57 detects information about the odor, and for example, an odor sensor is used. The odor detection unit 57 detects odor information of excrement such as urine and stool of the subject 100. The odor detecting unit 57 may detect, for example, ammonia, VOC, hydrogen sulfide, amine-based, sulfur-based malodorous gas, etc. as odor information of excrement of the subject 100. In this way, the odor detection unit 57 provides odor information due to excretion such as urine leakage and stool leakage in addition to the breathing rate and heart rate as ready-made odor sensors (ammonia, VOC, hydrogen sulfide, amine-based, sulfur-based sensors). ) And the Vital sensor (pneumatic pressure sensor) installed to detect changes in heart rate.

The sound collecting unit 58 detects information about sound, and a microphone is used, for example. The sound collecting unit 58 detects the sound information of the target person 100.

The determination unit 59 acquires biological information such as the respiratory rate and the number of snoring of the subject 100 and odor information regarding the excrement of the subject, and based on the acquired biological information and odor information, determines the state of the subject. judge.
The determination unit 59 determines whether or not the subject has excreted based on the acquired biological information and odor information. The determination unit 59 determines whether or not the subject has slept based on the acquired biological information and odor information. The determination unit 59 determines whether or not the subject has left the bed based on the acquired biological information and odor information. During sleep excretion, the subject's heart rate changes temporarily. Therefore, the determination unit 59 can simultaneously determine whether or not the subject has slept and whether or not the subject has excreted based on the acquired biological information and odor information.

For example, when the subject 100 is a diaper wearer, the determination unit 59 determines that the respiratory rate of the subject 100 is normal and that the subject 100 has excreted, the diaper needs to be changed. Generate warning information. The determination unit 59 generates warning information that the bed sheets need to be replaced when, for example, the subject who is a diaper wearer has left the bed and the subject 100 determines that the bed sheets have been excreted.

The determination unit 59 may determine the state of the subject based on the biological information, the odor information, and the sound information. The determination unit 59 acquires biological information such as the respiratory rate of the subject 100, odor information regarding the excrement of the subject 100, and sound information of the subject 100, and is based on the acquired biological information, odor information, and sound information. , It is determined whether or not the subject 100 is sleeping. For example, when the determination unit 59 detects snoring of the subject 100 and sounds without detecting the odor related to excrement, the determination unit 59 generates warning information indicating that the subject 100 is sleeping. To do. For example, when the determination unit 59 detects sound without snoring of the subject 100 and without detecting the odor related to excrement, the determination unit 59 generates warning information indicating that the subject 100 is crying. To do.

The determination unit 59 may determine the state of the subject 100 based on the threshold values set in advance for the biological information, the odor information, and the sound information.

The determination unit 59 may determine the state of the subject based on the biological information, the odor information, and the temperature / humidity information. The determination unit 59 may determine the state of the subject 100 based on the threshold values set in advance for the biological information, the odor information, and the sound information.

The notification unit 60 has a vibration module such as a vibrator, and the vibration module is controlled by the notification unit 60. The notification unit 60 acquires the state of the target person 100 determined by the determination unit 59. The notification unit 60 issues an alarm by vibrating based on the state of the target person 100. The notification unit 60 may issue an alarm based on biological information, odor information, and sound information. The notification unit 60 may issue an alarm when the biological information, the odor information, and the sound information each exceed preset threshold values. The notification unit 60 may issue an alarm by emitting a sound, or by blinking or lighting.

The transmission unit 56 acquires biometric information, odor information, sound information, the state of the target person 100, warning information, and the like, and transmits them to the biometric information management server 210 or the information terminal device 220. In the present invention, the biometric information management server 210 or the information terminal device 220 may include a discriminating unit. The information terminal device 220 and the biometric information management server 230 may generate warning information based on the state of the target person 100 determined by the determination unit 59.

For the temperature / humidity detection unit 61, for example, a temperature / humidity sensor is used. The temperature / humidity sensor can detect temperature / humidity information related to temperature and humidity. For example, by acquiring indoor temperature and humidity information, the temperature and humidity in the indoor environment where there is a risk of heat stroke (when the temperature is 31 ° C or higher and the humidity is 80% according to the WBGT guideline) and the heart rate and respiratory rate at that time are normal. When it rises or falls more rapidly, warning information is generated for the subject 100.

According to the present embodiment, the biological information detection unit 55 that detects biological information, the odor detection unit 57 that detects odor information, and the determination unit 59 that determines the state of the subject 100 based on the biological information and the odor information. To be equipped. Thereby, the state of the subject 100 can be determined in more detail based on the biological information such as the respiratory rate and the odor information. Therefore, the operator and the user can grasp the state of the target person 100 in consideration of the biological information and the odor information in more detail. That is, it is possible to grasp not only whether or not the subject 100 has slept or wandered, but also whether or not the subject 100 has excreted such as urine leakage or stool leakage, and snoring.

According to the present embodiment, the notification unit 60 that issues an alarm based on the state of the target person 100 is provided. As a result, the operator and the user can grasp the alarm issued in consideration of the biological information and the odor information. Therefore, the operator and the user can quickly take necessary measures for the target person 100 such as changing diapers.

According to the present embodiment, by considering the odor information, the patient can be promptly taken necessary measures such as changing diapers and sheets without visually observing whether or not the patient has excreted. be able to. Therefore, the burden on caregivers, nurses, doctors, etc. who care for patients can be reduced, and it can be applied to home care, nursing care facilities, hospitals, and the like.

According to the present embodiment, the notification unit 60 that issues an alarm by vibrating based on the state of the target person 100 is provided. As a result, the alarm issued in consideration of the biological information and the odor information can be grasped by vibration. Therefore, even a visually or hearing-impaired user can quickly take necessary measures for the target person 100 such as changing diapers.

According to the present embodiment, the sound collecting unit 58 for detecting sound information is provided, and the discriminating unit discriminates the state of the subject 100 based on biological information such as respiratory rate, odor information, and sound information. Thereby, the state of the subject 100 can be determined in more detail based on the biological information such as the respiratory rate, the odor information, and the sound information. In particular, by considering the sound information, it is possible to more accurately determine the state of snoring, the crying of a baby, and the like. Therefore, the operator and the user can grasp the state of the target person 100 in consideration of the biological information, the odor information, and the sound information in more detail.

According to the present embodiment, the temperature / humidity detection unit 61 for detecting temperature / humidity information regarding temperature and humidity is provided, and the discrimination unit is based on biological information such as respiratory rate, odor information, and temperature / humidity information of the subject 100. Determine the state. Thereby, the state of the subject 100 can be determined in more detail based on the biological information such as the respiratory rate, the odor information, and the temperature / humidity information. Therefore, the operator and the user can grasp the state of the target person 100 in consideration of the biological information, the odor information, and the temperature / humidity information in more detail.

According to this embodiment, the air pad 34 is fixed to the first and second polypropylene plates 131 and 132 by a fixing material. As a result, even when the subject 100 on the sensor mat 10 rolls over and moves, it is possible to prevent the air pad 34 from shifting with respect to the polypropylene plates 131 and 132. Therefore, air can be stably output from the sensor board 30, and biological information such as the respiratory rate of the subject 100 can be detected with higher accuracy.

According to this embodiment, the cushion member 33 is fixed to the first and second polyvinyl chloride plates 31 and 32 by a fixing material. As a result, even when the subject 100 on the sensor mat 10 rolls over and moves, it is possible to prevent the cushion member 33 from shifting with respect to the polypropylene plates 131 and 132. Therefore, the air pad 34 provided in the recess 33a is less likely to be displaced from the first and second polypropylene plates 131 and 132. As a result, air can be stably output from the sensor board 30, and biological information such as the respiratory rate of the subject 100 can be detected with higher accuracy.

According to the present embodiment, the determination is made based on the biological information such as the respiratory rate and the heart rate acquired by the biological information detection unit 55, the odor information acquired by the odor detection unit 57, and the biological information and the odor information. The status of the subject can be notified to a remote caregiver by wire or wirelessly. Therefore, the caregiver can immediately grasp the condition of the subject.

Although some of the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. Moreover, these embodiments can be carried out in combination as appropriate. Furthermore, the present invention can be implemented in various novel embodiments in addition to the above-mentioned some embodiments. Therefore, each of the above-mentioned several embodiments can be omitted, replaced, or changed in various ways without departing from the gist of the present invention. Such novel forms and modifications are included in the scope and gist of the present invention, as well as in the scope of the invention described in the claims and the equivalent of the invention described in the claims.

1: Biological information detection device 10: Sensor mat 20: Sensor mat cover 20A: Sensor mat cover 21: Bag part 22: Lid part 25: Fastener 26: Tube protection bag 27: Handle 30: Sensor board 31: First polyvinyl chloride Vinyl plate 32: Second polyvinyl chloride plate 33: Cushion member 33a: Recessed 34: Air pad 34a: Air pipe 35: Fixing material 36: Fixing material 50: Main body 51: piezoelectric element 52: Filter circuit 53: Maximum value detection Instrument 54: Counter 55: Biological information detection unit 56: Transmission unit 57: Odor detection unit 58: Sound collection unit 59: Judgment unit 60: Notification unit 70: Silicon tube 71: Y-shaped connector 72: Silicon tube 80: Sponge 100: Target person 131: First polypropylene plate 132: Second polypropylene plate 200: Biometric information communication system 210: Biometric information management server 220: Information terminal device 230: Biometric information management server

Claims (7)

A mat for detecting biological information placed under the subject via a rug,
A biometric information detection unit that detects the periodic biometric information of the subject,
An odor detector that detects odor information related to odors, a temperature / humidity detector that detects indoor temperature / humidity, and
A determination unit for determining the state of the subject based on the biological information and the odor information is provided.
The biometric information detection mat is
An air bag that is formed in a long shape and outputs air according to the pressure from the living body,
A plate-shaped cushion member having a recess having substantially the same size as the air bag is formed in the central portion, the air bag is fitted in the recess, and the thickness is substantially the same as the thickness of the air bag.
It has a pair of synthetic resin plate-shaped members which are substantially the same size as the plate-shaped cushion member, are formed to be bendable as a whole, and are provided so as to sandwich the plate-shaped cushion member.
The biometric information detection unit is a biometric information detection device characterized by detecting the biometric information based on the air pressure from the biometric information detection mat. A sound collecting unit for detecting sound information related to the sound emitted by the subject is further provided.
The biological information detection device according to claim 1, wherein the determination unit determines the state of the target person based on the biological information, the odor information, and the sound information. The biometric information detection device according to claim 1 or 2, further comprising a notification unit that issues an alarm based on the state of the subject determined by the determination unit. The biological information detection device according to claim 3, wherein the notification unit issues an alarm by vibrating. The biometric information detection device according to any one of claims 1 to 4, wherein the biometric information detection mat is characterized in that the air bag is fixed to the pair of synthetic resin plate-shaped members. The biometric information detection device according to claim 5, wherein the biometric information detection mat is characterized in that the plate-shaped cushion member is fixed to a pair of the synthetic resin plate-shaped members. Biological information detector and
Information terminal devices that can communicate with
A server device that receives information transmitted from the biometric information detection device and transmits the information to the information terminal device is provided.
The biological information detection device is
A mat for detecting biological information placed under the subject via a rug,
A biometric information detection unit that detects the periodic biometric information of the subject,
An odor detector that detects odor information related to odors,
A determination unit for determining the state of the subject based on the biological information and the odor information is provided.
The biometric information detection mat is
An air bag that is formed in a long shape and outputs air according to the pressure from the living body,
A plate-shaped cushion member having a recess having substantially the same size as the air bag is formed in the central portion, the air bag is fitted in the recess, and the thickness is substantially the same as the thickness of the air bag.
It has a pair of synthetic resin plate-shaped members which are substantially the same size as the plate-shaped cushion member, are formed to be bendable as a whole, and are provided so as to sandwich the plate-shaped cushion member.
The biometric information detection unit detects the biometric information based on the air pressure from the biometric information detection mat.
The server device receives the biometric information and the odor information transmitted from the biometric information detection device, and outputs the biometric information and at least one information of the state of the detection target person based on the biometric information to the information terminal. A biometric information communication system characterized by transmitting to a device.

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