WO2024241625A1 - 見守り装置、見守り方法及びプログラム - Google Patents
見守り装置、見守り方法及びプログラム Download PDFInfo
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/0507—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves using microwaves or terahertz waves
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H50/00—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics
- G16H50/30—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for calculating health indices; for individual health risk assessment
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- A61B5/024—Measuring pulse rate or heart rate
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- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb
- A61B5/113—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb occurring during breathing
- A61B5/1135—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor or mobility of a limb occurring during breathing by monitoring thoracic expansion
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- A61B5/7405—Details of notification to user or communication with user or patient; User input means using sound
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- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/04—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using a single signalling line, e.g. in a closed loop
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H10/00—ICT specially adapted for the handling or processing of patient-related medical or healthcare data
- G16H10/60—ICT specially adapted for the handling or processing of patient-related medical or healthcare data for patient-specific data, e.g. for electronic patient records
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- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
- A61B2562/02—Details of sensors specially adapted for in-vivo measurements
- A61B2562/0204—Acoustic sensors
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- A—HUMAN NECESSITIES
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- A61B5/0826—Detecting or evaluating apnoea events
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- A—HUMAN NECESSITIES
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- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/48—Other medical applications
- A61B5/4806—Sleep evaluation
- A61B5/4818—Sleep apnoea
Definitions
- the present invention relates to a monitoring device, a monitoring method, and a program, and in particular to a technology for determining physical abnormalities of a person being measured based on their biological information.
- Patent Document 1 discloses an abnormality evaluation device that obtains the respiration rate of a person being measured while sleeping and compares the respiration rate with a reference respiration rate to determine whether the person being measured is in an abnormal physical condition. If this device determines that the person being measured is in an abnormal condition, it notifies the person and/or a caregiver of this fact.
- the subject After drinking alcohol or exercising, the subject's heart rate and respiratory rate change significantly, albeit temporarily. For this reason, with the above-mentioned conventional technology, the subject may be judged to be in an abnormal state when measured after drinking alcohol or exercising, and an alert may be issued to that effect.
- the present invention was made in consideration of the above problems, and its purpose is to provide a monitoring device, monitoring method, and program that can appropriately notify the subject of abnormalities based on the subject's temporary physical condition, such as drinking or exercise.
- the monitoring device of the present invention includes a biometric information acquisition means for acquiring biometric information of the person being measured, an abnormality determination means for determining whether or not the person being measured is in an abnormal state based on the biometric information, a notification means for notifying the person being measured that he or she is in an abnormal state when it is determined that the person being measured is in an abnormal state, a state determination means for determining whether or not the person being measured is in a predetermined temporary physical state, and a notification restriction means for restricting the notification by the notification means when it is determined that the person being measured is in the temporary physical state.
- the notification limiting means may change the judgment criteria in the judgment means when the subject is judged to be in the temporary physical condition.
- the monitoring device described in (2) above may further include an impact level determination means for determining an impact level of the temporary physical condition of the subject.
- the notification limiting means may change the determination criteria in the determination means according to the impact level.
- the notification limiting means may be configured to, when it is determined that the person being measured is in the temporary physical state, not to issue a notification by the notification means until it is determined that the person being measured is not in the temporary physical state.
- condition determination means may determine whether the subject is in the temporary physical condition based on the biological information.
- the state determination means may include a machine learning model trained using the biometric information of a human being in the temporary physical state.
- the temporary physical state may be a state after drinking alcohol or a state after exercise.
- the monitoring method also includes a bio-information acquisition step of acquiring bio-information of the person being measured, an abnormality determination step of determining whether or not the person being measured is in an abnormal state based on the bio-information, a notification step of notifying the person being measured that he or she is in an abnormal state if it is determined that the person being measured is in an abnormal state, a condition determination step of determining whether or not the person being measured is in a predetermined temporary physical condition, and a notification restriction step of restricting notification in the notification step if it is determined that the person being measured is in the temporary physical condition.
- the program of the present invention is a program for causing a computer to function as bioinformation acquisition means for calculating bioinformation of the subject, abnormality determination means for determining whether the subject is in an abnormal state based on the bioinformation, notification means for notifying the subject when it is determined that the subject is in an abnormal state, condition determination means for determining whether the subject is in a specified temporary physical state, and notification restriction means for restricting notification by the notification means when it is determined that the subject is in the temporary physical state.
- This program may be stored in a computer-readable information storage medium such as a semiconductor memory or a magneto-optical disk.
- the present invention makes it possible to appropriately notify the subject of any abnormalities based on the subject's temporary physical condition, such as drinking or exercise.
- FIG. 1 is an overall configuration diagram of a monitoring system according to an embodiment of the present invention.
- 1 is a functional block diagram of a monitoring device according to an embodiment of the present invention.
- FIG. 11 is a flow diagram showing an example of the operation of the monitoring device.
- FIG. 11 is a flow diagram showing a modified operation example of the monitoring device.
- FIG. 1 is a diagram showing the overall configuration of a monitoring system according to an embodiment of the present invention.
- the monitoring system 1 shown in the figure is mainly composed of a bed 40 installed in a house.
- a speaker microphone 43 and a Doppler sensor 45 are attached to the headboard of the bed 40.
- the Doppler sensor 45 irradiates microwaves toward the chest of the person being measured sleeping on the bed 40 and receives the reflected waves.
- a Doppler signal indicating chest movement associated with heartbeat and breathing is generated from the reflected waves, and this Doppler signal is digitized and output as Doppler data.
- the speaker microphone 43 is also installed so as to face the person being measured sleeping on the bed 40.
- a weighing scale 41 is attached to the floor board of the bed 40, etc., and measures the weight of the person being measured and bedding, etc.
- the weighing scale 41, speaker microphone 43, and Doppler sensor 45 are connected to a monitoring device 10 installed in the same house.
- the monitoring device 10 acquires biometric information (here, heart rate and pulse rate) of the person being measured (not shown) sleeping in bed 40 based on Doppler data measured by the Doppler sensor 45, and detects abnormalities in the person being measured based on this biometric information. If an abnormality is detected, a voice message such as "An abnormality has been detected. Are you OK?" is output from the speaker of the speaker microphone 43. If the person being measured does not respond to this by saying "I'm OK" or the like into the microphone of the speaker microphone 43, the monitoring device 10 transmits a message of abnormality to the monitoring server 20 connected via a communication network 30 such as the Internet.
- the monitoring server 20 is a computer installed in a remote monitoring center. When the monitoring server 20 receives the message of abnormality, the staff of the monitoring center again calls the person being measured from the speaker of the speaker microphone 43, and requests the dispatch of a medical professional such as a doctor or an ambulance to the residence if necessary.
- FIG. 2 is a functional block diagram of a monitoring device 10 according to an embodiment of the present invention.
- the monitoring device 10 functionally includes a biometric information acquisition unit 11, an admission determination unit 12, a state determination unit 13, an impact level determination unit 14, an alarm restriction unit 15, an abnormality determination unit 16, and an alarm unit 17.
- the monitoring device 10 includes a general-purpose computer including a CPU and memory, and the functions shown in FIG. 2 are realized by executing a program according to an embodiment of the present invention on this computer.
- the program may be supplied to the computer from a computer-readable information storage medium such as a semiconductor memory, or may be supplied to the computer by being downloaded from another computer via a communication network 30 such as the Internet.
- the bioinformation acquisition unit 11 acquires the bioinformation of the subject based on the Doppler data detected by the Doppler sensor 45.
- the heart rate and respiration rate are acquired as the bioinformation.
- peaks corresponding to the heart rate and respiration rate are identified by Fourier analysis of the Doppler data, and the heart rate and respiration rate are acquired from the positions (frequencies) of these peaks.
- the bed entry determination unit 12 determines whether the person being measured is sleeping in bed 40 based on the weight detected by the weighing scale 41. For example, the weight of the person being measured is stored in advance, and the unit determines that the person being measured has entered bed when the weight detected by the weighing scale 41 has increased by that weight. The unit also determines that the person being measured has left bed when the weight detected by the weighing scale 41 has decreased by the weight stored in advance.
- the state determination unit 13 determines whether the subject is in a predetermined temporary physical state.
- the "predetermined temporary physical state” refers to a state after drinking alcohol and a state after exercise, and based on the Doppler data detected by the Doppler sensor 45, it is determined whether the subject is in a state after drinking alcohol (a state in which the effects of drinking alcohol remain), a state after exercise (a state in which the effects of exercise remain), a normal state, or another state.
- this determination can be made using a machine learning model. Specifically, a label indicating a state after drinking is assigned to Doppler data or its feature values for a certain period (here, as an example, 5 minutes) of a person in a state after drinking alcohol, and learning data is created.
- a label indicating a state after exercise is assigned to Doppler data or its feature values for a certain period of a person in a state after exercise, and learning data is created.
- a label indicating a normal state is assigned to Doppler data or its feature values for a certain period of a person in a normal state (a state that is neither a state after drinking alcohol nor a state after exercise), and learning data is created. Then, using these learning data, a machine learning model that classifies the physical state from the Doppler data or its feature values is trained.
- the heart rate and breathing rate tend to be high and the intensity is also high.
- a sensor may be installed on the dining table or refrigerator, and the detection results may be used to determine whether the person being measured is in a state after drinking alcohol.
- a breath sensor may be installed to determine whether the person being measured is in a state after drinking alcohol based on the alcohol concentration in the breath.
- a video camera may be installed near the dining table in the house, and the contents of the footage may be used to determine whether the person being measured has drunk alcohol.
- a video camera may be installed in the living room, and the contents of the footage may be used to determine whether the person being measured has exercised inside the house. The person being measured may input to the monitoring device 10 whether they have drunk alcohol or exercised.
- a range of heart rate and/or respiration rate may be set in advance for each effect level (e.g., three levels), and when the state determination unit 13 determines that the person being measured is in a post-exercise state, the effect level determination unit 14 may check to which effect level range the heart rate and respiration rate of the person being measured acquired by the bio-information acquisition unit 11 belong, thereby determining the effect level of the exercise.
- the abnormality determination unit 16 determines whether the subject is in an abnormal state based on the subject's heart rate and respiration rate acquired by the bioinformation acquisition unit 11. As an example, multiple numerical ranges for the heart rate are provided, and a risk value is set for each numerical range. The risk value for the heart rate is determined by checking which numerical range the heart rate belongs to. Similarly, multiple numerical ranges for the respiration rate are provided, and a risk value is set for each numerical range. The risk value for the respiration rate is determined by checking which numerical range the respiration rate belongs to. The abnormality determination unit 16 then calculates a total risk value by adding the risk value for the heart rate and the risk value for the respiration rate.
- the notification unit 17 notifies that fact. Specifically, it outputs an audible call message from the speaker unit of the speaker microphone 43. Furthermore, if there is no response from the person being measured to the microphone unit of the speaker microphone 43, it transmits a message to the monitoring server 20 via the communication network 30 to the effect that the person being measured is in an abnormal state.
- the notification limiting unit 15 limits notifications from the notification unit 17 when the subject is determined to be in a post-alcohol state or a post-exercise state.
- the abnormality determination unit 16 changes the criteria for determining an abnormal state. Specifically, the threshold value compared with the total risk value is changed to a post-alcohol threshold value that is increased by a predetermined value from the normal threshold value. This reduces the number of cases where the total risk value exceeds the threshold value and is determined to be an abnormal state. In this way, notifications from the notification unit 17 can be suppressed.
- the degree to which the threshold value is increased may be changed according to the level of influence of alcohol.
- the notification limiting unit 15 may stop abnormality determination by the abnormality determination unit 16 or stop notifications from the notification unit 17 until it is determined that the subject is not in a post-alcohol state.
- the abnormality determination section 16 may change the criteria for determining an abnormal state. Specifically, the threshold value compared with the overall risk value is changed to a post-exercise threshold value that is increased by a predetermined value from the normal threshold value. At this time, the degree to which the threshold value is increased may be changed according to the level of impact of exercise. Specifically, the higher the level of impact of exercise, the larger the post-exercise threshold value that is used.
- the notification restriction section 15 may stop the abnormality determination section 16 from making an abnormality determination or the notification section 17 from notifying until it is determined that the subject is not in a post-exercise state.
- FIG. 3 is a flow diagram showing an example of the operation of the monitoring device 10.
- the bed entry determination unit 12 first monitors whether the person being measured has entered bed 40 (S101). If the person being measured has entered bed, then the biometric information acquisition unit 11 acquires Doppler data transmitted from the Doppler sensor 45 (S102). The monitoring device 10 repeats the processes of S101 and S102 until one minute has passed (S103), and when one minute has passed (S103), it next determines whether five minutes or more have passed since the person entered bed (S104). If five minutes or more have not passed, the abnormality determination unit 16 sets the normal threshold value as the determination criterion (S109).
- the state determination unit 13 determines the state of the subject, and the influence level determination unit 14 determines the influence level of drinking, etc. (S105). Specifically, the state determination unit 13 inputs the Doppler data for the most recent 5 minutes into a machine learning model to determine whether the subject is in a state after drinking or exercising. As a result, if it is determined that the subject is in a normal state (S106), the abnormality determination unit 16 sets a normal threshold value as the judgment criterion (S109).
- the abnormality determination unit 16 calculates a total risk value based on the heart rate and respiratory rate acquired by the biological information acquisition unit 11 (S113). Then, the total risk value is compared with the threshold value set in S109 or S110 to perform abnormality determination (S114).
- the notification unit 17 issues a call through the speaker unit of the speaker microphone 43 (S116). If the subject's response to this call is picked up by the microphone unit of the speaker microphone 43 (S117), the process returns to S101. If the subject's response is not picked up (S117), the notification unit 17 sends a message to the monitoring server 20 indicating that an abnormality has occurred in the subject (S118), and the process returns to S101.
- the process also returns to S101. After one minute has elapsed, the state determination unit 13 again determines the state of the person being measured based on the Doppler data from the last five minutes, and the impact level determination unit 14 determines the impact level of drinking, etc. (S105). If the monitoring device 10 determines that the person being measured has changed from the post-drinking state (S107) to a normal state (S106), it sets the normal threshold as the determination criterion (S109) and continues with the subsequent processing.
- the monitoring system 1 described above can obtain the heart rate and respiratory rate of the person being measured after going to bed or while asleep based on the Doppler data acquired by the Doppler sensor 45, and calculate an overall risk value from these values.
- the overall risk value is compared with a given threshold, and if it is equal to or greater than the threshold, it is determined that an abnormality has occurred.
- the notification unit 17 notifies the person being measured and the monitoring center staff of this.
- the Doppler data is used to determine whether the person being measured is in a temporary physical state due to drinking or exercise, and this limits the notification by the notification unit 17. This makes it possible to prevent excessive notifications from being made to the person being measured and the monitoring center staff.
- FIG. 4 is a flow diagram showing the operation of the monitoring device in this case.
- the state judgment unit 13 judges the state of the person being measured, and the influence level judgment unit 14 judges the influence level of drinking, etc. (S105a).
- the state judgment unit 13 judges the state of the person being measured based on the Doppler data for the previous 1 minute, for example, by the first machine learning model.
- the state of the person being measured is judged based on the Doppler data for the previous 5 minutes, for example, by the second machine learning model.
- a label indicating a state after drinking, etc. is assigned to the 1-minute Doppler data or its feature value of a person in each of the following states: after drinking, after exercise, and normal, and learning data is created. Then, a first machine learning model that classifies the physical condition from one minute of Doppler data or its feature values can be trained using the learning data thus created.
- a label indicating the state after drinking is assigned to five minutes of Doppler data or its feature values of a person in each of the following states: after drinking, after exercising, and in a normal state, to create learning data. Then, a second machine learning model that classifies the physical condition from five minutes of Doppler data or its feature values can be trained using the learning data thus created. According to this modified example, an abnormality can be appropriately determined based on the subject's temporary physical condition one minute after going to bed.
- REFERENCE SIGNS LIST 1 monitoring system 10 monitoring device, 11 biological information acquisition unit, 12 bed admission determination unit, 13 status determination unit, 14 impact level determination unit, 15 notification restriction unit, 16 abnormality determination unit, 17 notification unit, 20 monitoring center server, 30 communication network, 40 bed, 41 Weight scale, 43 speaker microphone, 45 Doppler sensor.
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Abstract
Description
重量計、43 スピーカマイク、45 ドップラセンサ。
Claims (9)
- 被測定者の生体情報を取得する生体情報取得手段と、
前記生体情報に基づいて前記被測定者が異常状態にあるか否かを判定する異常判定手段と、
前記被測定者が異常状態にあると判定される場合に、その旨を報知する報知手段と、
前記被測定者が所定の一時的な身体状態にあるか否かを判定する状態判定手段と、
前記被測定者が前記一時的な身体状態にあると判定される場合に、前記報知手段による報知を制限する報知制限手段と、
を含むことを特徴とする見守り装置。 - 請求項1に記載の見守り装置において、
前記報知制限手段は、前記被測定者が前記一時的な身体状態にあると判定される場合に、前記判定手段における判定基準を変更する、
ことを特徴とする見守り装置。 - 請求項2に記載の見守り装置において、
前記被測定者について前記一時的な身体状態の影響レベルを判定する影響レベル判定手段をさらに含み、
前記報知制限手段は、前記影響レベルに応じて前記判定手段における判定基準を変更する、
ことを特徴とする見守り装置。 - 請求項1に記載の見守り装置において、
前記報知制限手段は、前記被測定者が前記一時的な身体状態にあると判定される場合に、前記被測定者が前記一時的な身体状態にないと判定されるまで、前記報知手段による報知を行わない、
ことを特徴とする見守り装置。 - 請求項1に記載の見守り装置において、
前記状態判定手段は、前記生体情報に基づいて前記被測定者が前記一時的な身体状態にあるか否かを判定する、
ことを特徴とする見守り装置。 - 請求項5に記載の見守り装置において、
前記状態判定手段は、前記一時的な身体状態にある人間の前記生体情報を用いて訓練された機械学習モデルを含む、
ことを特徴とする見守り装置。 - 請求項6に記載の見守り装置において、
前記一時的な身体状態は、飲酒後の状態又は運動後の状態である、
ことを特徴とする見守り装置。 - 被測定者の生体情報を取得する生体情報取得ステップと、
前記生体情報に基づいて前記被測定者が異常状態にあるか否かを判定する異常判定ステップと、
前記被測定者が異常状態にあると判定される場合に、その旨を報知する報知ステップと、
前記被測定者が所定の一時的な身体状態にあるか否かを判定する状態判定ステップと、
前記被測定者が前記一時的な身体状態にあると判定される場合に、前記報知ステップでの報知を制限する報知制限ステップと、
を含むことを特徴とする見守り方法。 - 被測定者の生体情報を算出する生体情報取得手段、
前記生体情報に基づいて前記被測定者が異常状態にあるか否かを判定する異常判定手段、
前記被測定者が異常状態にあると判定される場合に、その旨を報知する報知手段、
前記被測定者が所定の一時的な身体状態にあるか否かを判定する状態判定手段、及び
前記被測定者が前記一時的な身体状態にあると判定される場合に、前記報知手段による報知を制限する報知制限手段
としてコンピュータを機能させるためのプログラム。
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| WO2021187307A1 (ja) * | 2020-03-17 | 2021-09-23 | データソリューションズ株式会社 | 生体異常検出装置、生体異常検出方法、及び、プログラム |
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| WO2021187307A1 (ja) * | 2020-03-17 | 2021-09-23 | データソリューションズ株式会社 | 生体異常検出装置、生体異常検出方法、及び、プログラム |
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