JP7061861B2 - Monitoring system to prevent SIDS - Google Patents

Description

The present invention relates to a monitoring system, a monitoring method and a monitoring program for preventing SIDS.

Conventionally, in nursery schools and kindergartens, in order to prevent the occurrence of SIDS (Sudden Infant Death Syndrome), it is necessary to monitor the sleeping state of multiple infants, and the observer sleeps each infant. In addition to actually visually observing the posture, records were taken at regular intervals and reported to the parents of infants in order to clarify the monitoring responsibility. As described above, a monitoring system for SIDS prevention provided with a detecting means is known in order to reduce the burden of visual monitoring by the observer. For example, Patent Document 1 includes a monitoring system including a monitoring device having a function of photographing an infant and acquiring video information, a function of detecting the body temperature of the infant, and a function of detecting the room temperature around the infant. It has been disclosed.

Japanese Unexamined Patent Publication No. 2008-48819 (P2008-48819A)

In the monitoring system disclosed in Patent Document 1, a determination unit that determines that the infant is abnormal when the infant is in the prone position (prone position) based on the moving image information, and an abnormality when the body temperature of the infant exceeds a predetermined threshold value. It is equipped with a determination unit for determining that there is an abnormality and a determination unit for determining an abnormality when the room temperature exceeds a predetermined threshold value, and when any of the determination units determines that the abnormality is present, an alarm signal is generated to the outside. You can notify the abnormality. In this way, by monitoring the sleeping posture, body temperature, and room temperature of the infant, it is possible to detect an abnormal state in advance and prevent SIDS of the infant.

However, since this monitoring system basically targets only one infant, it is not possible to monitor a plurality of infants at the same time. In addition, since each infant needs optical electrical equipment such as a surveillance camera for acquiring video information, the burden of equipment costs increases.

The present invention is an improvement of a conventional monitoring system for SIDS prevention, and is a monitoring system, a monitoring device, and a monitoring device for preventing SIDS of infants, which can simultaneously monitor the postures of a plurality of infants with a simpler configuration. Regarding the provision of monitoring programs.

The first invention of the present application includes a plurality of sensors for detecting the movement of a plurality of monitored subjects in a sleeping posture, and a computer capable of communicating with the plurality of sensors, and the computer is based on data transmitted from the sensors. A priority determination unit that determines the priority of preferentially displaying an icon on the monitoring screen based on the basic information of each monitoring target person between the body movement detection unit that detects the body movement based on the monitoring target person and the monitoring target person. The sleeping posture determination unit that determines the sleeping posture of the monitored person based on the detected body movement data, and the icon display preferentially on the monitoring screen based on the determined sleeping posture of each monitored person. The priority determination unit that determines the priority to be performed, the awakening / sleep determination unit that determines the awakening / sleep of the monitored person based on the body movement data, and the determination result of the sleeping posture determination unit. The present invention relates to a monitoring system for preventing SIDS equipped with an alarm judgment unit that outputs a warning signal when it is determined that the prone state of the monitored person has continued for a predetermined time and the duration exceeds a predetermined judgment threshold. ..

In one of the embodiments according to the first aspect of the present invention, the sleeping posture determination unit can determine the supine, prone and lying states of the monitored person in the sleeping posture, and the icon display is the object. It has a different form depending on the posture of the person.

In one of the embodiments according to the first invention of the present application, a warning signal is also output when it is determined that the lying state of the monitored person continues for a predetermined time and the duration exceeds a predetermined determination threshold value. , The judgment threshold value in the warning signal in the lying state and the warning signal in the lying state is different.

In one of the embodiments according to the first aspect of the present invention, the awakening / sleep determination unit for determining the awakening / sleep of the subject based on the body movement data is further provided, and the sleep state and the awake state are described . Warning signals with different output modes are output.

In one of the embodiments according to the first invention of the present application, the sensor has an acceleration sensor, and the sampling period by the acceleration sensor is 0.2 to 2.0 Hz.

In one of the embodiments according to the first aspect of the present invention, the sensor can be attached to the clothes of the subject, and a warning signal is transmitted when the sensor is removed from the clothes.

In one of the embodiments according to the first invention of the present application, a warning signal is transmitted by detecting a plurality of times of turning over of the monitored person.

The second invention of the present application includes a plurality of sensors for detecting the movement of a plurality of monitored persons in a sleeping posture, and a computer capable of communicating with the plurality of sensors, and the computer is based on data transmitted from the sensors. A body movement detection unit that detects body movements based on the body movements, a sleeping posture determination unit that determines the sleeping posture of the monitored person based on the detected body movement data, and a monitoring target person based on the body movement data. An alarm determination that outputs a warning signal when it is determined that the prone state of the monitored person has continued for a predetermined time based on the determination results of the awakening / sleep determination unit that determines awakening / sleep and the sleeping posture determination unit. The present invention relates to a monitoring system for preventing SIDS in which the sensor has an acceleration sensor and the sampling period by the acceleration sensor is 0.2 to 2.0 Hz.

The third invention of the present application is a monitoring method executed by a computer, wherein the monitoring is based on a step of acquiring ID information of a plurality of monitored persons wearing a sensor and body movement data transmitted from the sensor. A step of detecting the body movement of the subject, a step of determining the priority between the monitored subjects, a step of determining the sleeping posture of the monitored subject according to the detected body movement, and a detected body. It has a step of determining the awakening / sleeping state of the monitored person according to the movement, and a step of outputting a warning signal based on the determination result of the sleeping posture and the awakening / sleeping state.

The fourth invention of the present application is a monitoring program for causing a computer to execute each step of the monitoring system.

The drawings show particular embodiments of the invention and include not only the essential configurations of the invention, but also selective and preferred embodiments.
An overall view schematically showing a monitoring system for SIDS prevention according to the first embodiment of the present invention. A block diagram schematically showing the monitoring system. A block diagram showing the functional configuration of the control unit. The block diagram which shows the functional composition of a sensor unit. (A) A diagram of a monitoring screen in a computer device during monitoring. (B) The figure of the monitoring screen after the sleeping posture of a subject is corrected. The figure of the flowchart of the method of determining a priority monitoring rank. The figure of the flowchart of the monitoring method of the monitoring system. The schematic block diagram of the monitoring system in 2nd Embodiment.

<First Embodiment>
Referring to FIG. 1, the monitoring system (hereinafter, monitoring system) 10 for preventing SIDS (Sudden Infant Death Syndrome) according to the first embodiment of the present invention includes postures and awakening / sleeping states of a plurality of monitored subjects (hereinafter referred to as monitoring system). (Hereinafter, monitoring information) is to be monitored, and in the illustrated example, the monitoring information of three monitored persons (hereinafter, target persons) 11 to 13 laid on a dedicated bed in the monitoring room is monitored. are doing. The monitoring system (or monitoring device) 10 is a sensor unit (sensor) 20 attached to the clothes of the monitored persons 11 to 13, and a computer device (computer) that receives signals transmitted from the sensor unit 20 and converts them into data. 30 and an alarm unit (warning means) 35 built in the computer device 30 to give an alarm according to the state of the monitored persons 11 to 13. In the present invention, the monitored subjects 11 to 13 are mainly infants (6 months to 1 year old) having a high incidence of SIDS during sleep, and even preschoolers who are older than infants having a high incidence of SIDS. include. However, it does not exclude adults who need to monitor their sleeping posture, such as bedridden elderly people and people with severe disabilities.

In the present specification, the computers (information processing terminal devices) 30 and 210 are terminal devices that perform predetermined information processing on the measurement data transmitted from the sensor units 20 and 240 and the data stored in the terminal device, and are personal. It means various general-purpose terminal devices such as computers, server devices, mobile phones, electronic tablets, and mobile information terminals (PDF).

The monitoring room can be any room in a house, a nursery facility such as a nursery school or kindergarten, or a building such as a hospital, as long as it is a space where beds and futons for laying the monitored persons 11 to 13 are prepared. good. Further, the computer device 30 according to the present embodiment may be installed in a monitoring room or may be installed in another room remote from the monitoring room. As a person who monitors the sleeping postures of the monitored persons 11 to 13, in addition to the monitor observer who monitors the monitor screen of the computer device 30, a patrol that patrols the sleeping postures of the subjects in one or more monitoring rooms. Including those.

The sensor unit 20 is detachably attached to the clothes of the subject via a locking means (not shown). The locking means has a first locking portion located on the outer surface of the sensor unit 20 and a second locking portion located on the inner or outer surface of the clothing. As the locking means, a non-woven fabric forming clothes, an adhesive that can be fastened to the cloth, a mechanical fastener element having a plurality of hook groups / loop groups, and the like can be used. The clothing of the monitored persons 11 to 13 includes bottoms such as diapers, underwear, trousers, and skirts worn on the lower body, as well as tops such as shirts and underwear worn on the upper body.

Although not shown, the alarm unit 35 may display a warning when the sensor unit 20 attached to the clothes is removed from the clothes. Specifically, a contact sensor may be arranged in the locking means, and a warning may be displayed in the alarm unit 35 of the computer device 30 when the engagement by the locking means is released during monitoring. However, a warning may be displayed from a warning unit arranged as an option of the sensor unit 20. Further, in a situation where wireless mutual communication is possible in each sensor unit 20, when the engagement between any sensor unit 20 and clothing is disengaged, an alarm is displayed in the alarm unit of the other sensor unit 20. May be set to.

The sensor unit 20 is for detecting the sleeping posture and awakening / sleeping state of the monitored persons 11 to 13, and is clothing as long as the weight movement of the monitored persons 11 to 13 can be accurately grasped. It suffices if it is arranged at a position facing any of the body parts such as the abdomen, back, legs, and chest of the subject. When the monitored persons 11 to 13 are infants, it is preferable that they are attached to the positions facing the abdomen of the clothes. Infants usually have a bulging abdomen compared to adults. Therefore, by arranging the sensor unit 20 facing the abdomen in this way, when the subject is in a prone position, the body and the bed It is located between the two and can reliably detect the acceleration due to the movement of the body.

Although not shown, the sensor unit 20 may be stored in a dedicated storage bag made of rubber, vinyl, or cloth. Further, with the sensor unit 20 stored in the storage bag, it can be indirectly attached to the clothes via the locking means located on the outer surface of the storage bag. By monitoring the sensor unit 20 in a storage bag, the excrement does not directly adhere to the sensor unit 20 even when the sensor unit 20 is attached to the diaper.

Referring to FIG. 4, the sensor unit 20 can use, for example, a known acceleration sensor 21 as the detection means. The acceleration sensor 21 is for detecting the inclination and movement of the body in a stationary state of the user, and detects the acceleration of each axis (for example, in the case of three axes, the X axis, the Y axis, and the Z axis). Measure at each sampling interval. The sensor unit 20 outputs the acceleration data as physical quantity data amplified, rectified, and A / D converted by the amplifier circuit 22, the optional waveform rectifier circuit, and the A / D converter 23, respectively, for the acceleration signal detected by the acceleration sensor 21. do. The output acceleration data is transmitted from the communication unit 24 of the sensor unit to the control unit 31 of the computer device 30 at each sampling interval by wire or wirelessly via a predetermined communication network (for example, LAN, Internet, BLUETOOTH (registered trademark)). Will be sent. In the amplifier circuit 22, the detected signal is amplified to the second or third power.

The sampling interval for measuring the acceleration in the sensor unit 20 is preferably 1 time / 5 seconds to 1 time / 0.5 seconds, that is, the sampling period (frequency) is preferably 0.2 to 2.0 Hz. By frequently measuring the acceleration at such a short sampling interval, it is possible to reliably prevent the occurrence of SIDS during monitoring. SIDS has signs that occur when the baby is prone and gradually weakens breathing, and it is necessary to deal with it promptly before the baby's breathing stops completely. Therefore, when monitoring a plurality of infants at the same time, it is necessary to promptly detect the prone state of the infant and return it to the supine state before the breathing becomes weak. According to the finding of the inventor. At intervals greater than 1 time / 5 seconds (eg, 1 time / 30 seconds, etc.), signs of SIDS were already confirmed when the infant returned to the posture. In addition, for example, even if an infant turns over and the bedding covers the entire face due to the reaction, making it difficult to breathe, the bedding can be quickly removed by measuring at such a frequency. The danger can be avoided.

The sensor unit 20 may include a 3-axis gyro sensor (angular velocity sensor) in addition to the configuration including the acceleration sensor 21. When the gyro sensor is used, the posture of the monitored person can be detected based on the angular velocity data. Further, when the acceleration sensor 21 is used, the measurement accuracy of the degree of inclination of the user's body can be improved as the number of axes intersecting with each other increases, but as long as the object of the present invention is achieved, 3 It may be one or two axes below the axis, or it may be four axes or more.

The computer device 30 includes a CPU (Central Processing Unit), a RAM (random access memory) that is a temporary storage area, a ROM (read-only memory) that stores control programs and data, and a storage medium (for example, SSD, HDD, SD memory). It is equipped with all the basic components normally provided as arithmetic processing units such as cards), monitor screens, communication modules, and speakers. A program for performing calculation, determination, storage, and control necessary for executing the monitoring system is pre-installed in the computer device 30 via a recording medium or a communication network, and as a functional configuration, the control unit 31 and the storage A unit 32, a display unit (display) 33, an operation unit 34, and an alarm unit 35 are provided.

<Control unit>
Referring to FIG. 3, the control unit 31 of the computer device 30 performs control processing by the control program stored in the storage unit 32, and includes the ID collation unit 41, the time measurement unit 42, and the body motion detection unit 43. It has a priority determination unit 44, a sleeping posture determination unit 45, an alarm determination unit 47, and a priority ranking processing unit 48.

The ID collation unit 41 of the control unit 31 collates the ID number of the target person using each sensor unit 20 with the ID information stored in the storage unit 32. In the time measuring unit 42, various times required for monitoring such as the start / end time of the monitoring mode by the monitoring system 10, the continuation / end time of an arbitrary sleeping posture, the continuation / end time of sleep / awakening, etc. are set as a unit time ( Measure every second / minute).

The body motion detection unit 43 of the control unit 31 receives the body motion data transmitted from the sensor units 20 worn by the monitored persons 11 to 13. Since the sensor unit 20 includes an A / D converter, the body motion detection unit 43 can receive body motion data that changes for each sleeping posture of the monitored persons 11 to 13 in real time as a digital signal.

In the priority determination unit 44 of the control unit 31, the monitoring target person 11 is ranked according to the priority (levels 1 to 5) previously ranked by the priority ranking processing unit 48 described later for each of the monitoring target persons 11 to 13. Determine the priority to be monitored from among 13 to 13. According to the priority determined by the priority determination unit 44, the monitored persons 11 to 13 to be preferentially monitored on the monitoring screen 60 are determined.

The sleeping posture determination unit 45 of the control unit 31 obtains sleeping posture information such as the sleeping posture, the number of times of turning over, and the duration of each turning posture of the monitored persons 11 to 13 based on the measurement data received by the body motion detecting unit 43. calculate. The sleeping posture to be determined includes a supine state (first state), a prone state (second state), and a lying state (third state). For example, as a method of determining these sleeping postures by the acceleration sensor 21, if the inclination angle of the acceleration sensor 21 with respect to the X axis is in the vicinity of 0 °, the supine state and the inclination angle are in the vicinity of + 90 ° or −90 °. If there is, it is judged as lying down, and if the inclination angle is in the vicinity of 180 °, it is judged as lying down. In addition, the amount of change in the tilt angle calculated for each unit time is calculated as the rotation angle, and when it exceeds a predetermined threshold value, the turning state and the number of times of turning can be calculated. The duration of each sleeping posture is the time during which the corresponding sleeping posture is continued, and the tilt angle for each sleeping posture is within a predetermined range (the range recorded by the storage unit) even if the tilt angle changes slightly. ), It is calculated assuming that the posture is the same. Specifically, for example, when the initial posture is in the supine state, the supine state is within the range of 0 ° ± 30 °, and the range is within the range of + 30 ° to 120 ° or -30 ° to −120 °. If it is in the lying state and within the range of 150 ° to 210 °, it is regarded as the prone state and calculated.

In addition to these three sleeping posture states, for example, when a large acceleration is measured in the Z-axis direction, it is determined that the monitored persons 11 to 13 are in a posture state held by a guardian such as a mother. can do. Further, when a large acceleration in the Y-axis direction is measured, it can be determined that the monitored persons 11 to 13 are in a posture state in which they crawl on all fours and move forward and backward (so-called high-high posture). .. In this way, when the monitored persons 11 to 13 are held by the mother or in a posture of moving on all fours, the guardian is directly monitoring or the monitored persons 11 to 11. Since SIDS is in an awake state, there is a low possibility that SIDS will occur, and in these posture states, the alarm unit 35 is set not to display a warning.

In the awakening / sleep determination unit 46 of the control unit 31, the subject is awake (or sleeping) based on the measurement data received by the body movement detection unit 43 and / or the data calculated from the sleeping posture determination unit 45. Judge whether or not. For example, based on the data calculated by the sleeping posture determination unit 45, when the number of body movements generated within a predetermined time exceeds a predetermined threshold value (times / min), it is determined that the person is awake, while the body movements. If the frequency of occurrence is less than a predetermined threshold value, it is determined to be sleeping. The determination method in the sleeping posture determination unit 45 and the awakening / sleep determination unit 46 described above is an example, and the data transmitted from the sensor unit 20 is as long as the technical effect of the monitoring system 10 in the present embodiment is achieved. Based on the above, it can be determined by a known method. For example, whether or not the subject is sleeping can be determined to be sleeping after detecting the so-called arousal reflex that occurs during sleep.

The alarm determination unit 47 of the control unit 31 comprehensively determines the determination of the sleeping posture determination unit 45 and the awakening / sleep determination unit 46 and the basic information for each of the monitored persons 11 to 13, and whether or not the alarm signal is output. To judge. Specifically, if the monitored persons 11 to 13 continue to lie down for t-1 hours while awake, the first (weak) warning is displayed, and the monitored persons 11 to 13 t-ly lie down during sleep. The second (middle) warning display is displayed when it continues for 2 hours, and the third (strong) warning display is displayed when the monitored persons 11 to 13 continue to lie down for t-3 hours while sleeping. , A warning signal is output to the alarm unit 35.

Normally, when the monitored subjects 11 to 13 are awake, the subject 11 may change his / her posture even in the prone position, so that the t-1 time for monitoring is relatively long, for example, 90. ~ 140 seconds. On the other hand, when the monitored persons 11 to 13 are sleeping, even if they are lying down, they may shift to the prone position as they are, and the nose and mouth may be blocked on the floor surface, resulting in suffocation and SIDS. Therefore, it is preferable to set a time shorter than t-1 hour, specifically, 60 to 130 seconds. Further, when the monitored persons 11 to 13 are sleeping and are in a prone state, the t-3 may be in a dangerous state even for a short time, so that t-3 has a shorter time than t-2. Is preferably set, specifically, 20 to 50 seconds. The specific numerical values (time) of each duration t1 to t3 may be different for each subject based on the ID information.

Further, even when the lying state and / or the prone state do not continue / accumulate for a predetermined time, when the monitored persons 11 to 13 repeatedly turn over a plurality of times within a relatively short time, a warning signal (fourth). It is preferable to send a warning display). In this way, when the monitored persons 11 to 13 turn over a plurality of times in a short period of time and the lying state changes frequently, there is a possibility that the person will eventually become prone, and the bedding such as a blanket may be worn when turning over. Since there is a risk of covering the face and blocking the nose and mouth, it is possible to prevent the occurrence of SIDS by transmitting a warning signal.

Referring to FIGS. 5A and 5B, a monitoring screen 60 for monitoring a target person wearing the sensor unit 20 is displayed on the display unit 33 of the computer device 30. On the monitoring screen 60, a plurality of icon displays 61-63 corresponding to each sensor unit 20 are displayed. The icon display 61-63 has an outer frame 61a-63a and a design element 61b-63b made of an illustration design of an infant, which is located surrounded by the outer frame 61a-63a. Above the icon display 61-63, identification of "BABY1", "BABY2", "BABY3", etc. corresponding to the identification numbers attached to the beds on which the sensor units 20 and / or the monitored persons 11 to 13 are lying down is identified. The display is located, and the ID numbers of the monitored persons 11 to 13 equipped with each sensor unit 20 are displayed below. As a method of identifying the monitored persons 11 to 13, the name of the target person may be directly displayed instead of the ID number. Furthermore, as additional information, the age, gender, analysis value based on the past monitoring results (duration (cumulative) time of the past prone state, degree of risk based on the number of times), priority rank, etc. are displayed. You may.

The symbol elements 61b-63b of the icon display 61-63 change and display the sleeping postures of the subjects 11 to 13 in real time according to the determination result of the sleeping posture determination unit 45 of the control unit 31. In the present embodiment, the icon displays 61-63 correspond to the subjects 11 to 13, respectively. Referring to FIG. 5A, when a certain period of time has elapsed from the start of the monitoring mode of the monitoring system 10, the subject 11 is in the prone position, the subject 12 is in the lying position, and the subject 13 is in the supine state. Corresponding to the sleeping posture of these subjects, the symbol elements 61b-63b of the icon display 61-63 are also in the prone state, the lying state, and the supine state. In FIG. 5B, the state of the monitoring room after the observer or the observer who patrols and monitors the sleeping postures of the monitored persons 11 to 13 corrects the sleeping postures of the subjects 11 and 12 to the supine state. The symbol elements 61b-63b of the icon display 61-63 are also changed to the supine state according to the sleeping postures of the subjects 11 to 13. In this way, since the symbol elements 61b-63b also change according to the change in the sleeping posture of the subjects 11 to 13 in the monitoring mode of the monitoring system 10, the observer changes the sleeping posture of the subjects 11 to 13 in real time. It can be grasped visually immediately.

The outer frames 61a-63a of the icon display 61-63 are colored in red, blue, or the like according to the priority monitoring rank described later. In this way, the outer frames 61a-63a of the icon display 61-63 are colored according to the priority rank, so that the observer can visually instantly visually recognize the target persons 11 to 13 to be monitored with priority. Can be grasped. The design of the monitoring screen 60 and the icon display 61-63 is not limited to the illustrated example, and the outer shape may be a known shape such as a circle, an ellipse, a polygon, a star, a heart shape, or a creative design. Well, the design elements 61b-63b are not illustration designs for infants, but as long as the sleeping postures of the monitored persons 11 to 13 can be grasped, patterns imitating animals and plants, characters of animations and stories, characters and combinations thereof, etc. May be.

Referring to FIG. 6, the priority ranking processing unit 48 of the control unit 31 acquires basic information for each monitored person (S51). Basic information includes, for example, age, gender, body shape, degree of obesity, frequency history data of individual proneness (number of times, elapsed time / cumulative time after falling asleep), frequency history data of lying down, past accident history (for example, for example). The number of times the third warning display is displayed, etc.) and the physical condition data (stuffy nose, cough, presence / absence of fever, etc.) input by the observer on the day of the monitoring are included. Next, a threshold value (min) for each warning display is set for each of the monitored persons 11 to 13 based on the basic information of the monitored persons 11 to 13 (S52). The threshold value (min) for the warning display comprehensively determines the calculation data of the sleeping posture determination unit 45 and the awakening / sleep determination unit 46 and the duration measured by the time measurement unit 42, and displays the first to third warnings. The warning signal is transmitted earlier as the threshold value for warning display is lower, while the warning signal is transmitted later as the threshold value for warning display is higher.

When the risk of SIDS is relatively low by comprehensively judging the basic information of the monitored persons 11 to 13, for example, the age is 6 months or older, the body shape and the degree of obesity are average, and the degree of obesity is average. For subjects who have never had an accident in the past, the threshold value associated with each warning display is set relatively high. On the other hand, for example, in the case of subjects whose age is within 6 months, subjects whose body shape and obesity are above average even if they are 6 months or older, subjects who have had an accident in the past, etc. The threshold value associated with each warning display is set relatively low. In this way, the occurrence of SIDS can be effectively prevented by setting the threshold value according to the degree of risk based on the SIDS prediction occurrence rate for each subject.

The priority monitoring rank of the target person is determined according to the set threshold value for the warning display (S53). For example, ranks 1 to 5 are prioritized so that when the threshold is high and the monitoring priority is the lowest, it is "rank 1", and when the threshold is low and the monitoring priority is the highest, it is "rank 5". Rank according to the degree. For the ranking, what is recorded in the ID unit of the storage unit 32 as a part of the ID information may be acquired, or the control unit 31 may perform the ranking process at any time based on the above criteria.

The storage unit 32 of the computer device 30 includes an ID unit, a control program (application), and various databases. The control program can be provided to the computer device 30 in the form of being recorded on a computer-readable recording medium. The recording medium includes, for example, a hard disk, a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD, a ROM cartridge, a RAM cartridge with a battery backup, a flash memory cartridge, and the like. You can also download the control pluggram via the Internet and store it on your hard disk.

The ID unit of the storage unit 32 stores basic information (which can also be stored as a database) for each target person in addition to ID information such as name, address, contact information, weight, and height. The basic information includes accumulated data from past monitoring. The accumulated data includes, for example, the number of times of turning over during awakening and sleeping (average value) within a predetermined monitoring time in the past, the transmission history of a warning signal, the priority monitoring rank, and the like. In the past monitoring time, multiple patterns such as nap time (2 hours from 1:00 pm to 3:00 pm) and bedtime at night (9:00 pm to 7:00 am, etc.) in nursery schools and kindergartens are stored. ing.

In various databases of the storage unit 32, information necessary for each determination such as basic information for each monitored person, sleeping posture determination threshold value, awakening / sleep determination threshold value, etc. is accumulated. When a data processing instruction is received automatically during execution of the control program or by an operation of the operation unit (keyboard, mouse) 34 by the monitor, the ID unit of the storage unit 32 corresponds to the ID of the target person. Data such as sleep time and amount of change in body position are accumulated.

The alarm unit 35 is instructed to generate an alarm sound from the speaker based on the determination result of the alarm determination unit 47 of the control unit 31 or to display a warning screen (not shown) on the monitoring screen 60. When the sensor unit 20 includes an alarm unit that displays an alarm sound or an alarm light as an option, the alarm unit may execute an alarm via the communication unit 24 of the sensor unit 20. Further, application execution of a terminal device (mobile phone, PHS, information communication terminal, etc.) possessed by another monitor (patrol person) who is waiting near a target person other than the monitor who operates and monitors the computer device 30. It is also possible to send an alarm signal inside to notify each observer. In this way, by transmitting a warning signal to notify other observers other than the observer who is monitoring the monitor screen of the computer device 30, the prone or lying state of the subject is promptly corrected to the supine state. can do.

<Monitoring flow of monitoring system>
Explaining an example of the use example of the monitoring system 10 with reference to FIG. 7, first, the sensor unit 20 is arranged at a predetermined position on the clothes of a plurality of monitored persons 11 to 13, and the power of the sensor unit 20 is turned on. (S101). The monitoring target persons 11 to 13 by the monitoring system 10 are not limited to the monitoring target persons 11 to 13 at bedtime, but may be performed during daytime activities. In particular, in the case of a young child, awakening and sleep are frequently switched, so it is preferable to constantly monitor the child.

The observer activates the application of the computer device 30 before or immediately after the input of the power supply of the sensor unit 20, and the ID number of the target person who wears them corresponding to each sensor unit 20 on the initial screen or the monitoring screen 60. Is input, and ID information / basic information is acquired (S102). The acquired basic information includes a monitoring priority rank for each target person, and the priority determination unit 44 selects a target person to be displayed on the monitoring screen 60 (S103). Specifically, for example, when 10 subjects are each equipped with the sensor unit 20 and the number of people that can be displayed on the monitoring screen 60 is 5, monitoring priority is given among the monitoring subjects. The target person with the highest rank is displayed on the monitoring screen 60 in order. The difference in priority among the target persons displayed on the monitoring screen 60 shall be displayed by an appropriate necessary method such as the arrangement of the target icons (left / right, top / bottom), the size of the icons, and the difference in the notation method of the icons. Can be done.

In this way, by preferentially displaying on the monitoring screen 60 based on the monitoring priority rank acquired from the basic information at the start of the monitoring mode, the observer has priority among the monitored persons 11 to 13. It is possible to grasp the monitored persons 11 to 13 that must be monitored in a targeted manner, and to immediately recognize if there is an abnormality in the monitoring mode. However, the priority according to the monitoring priority rank acquired from the basic information is from the start to the lapse of a certain time, and the control unit 31 comprehensively determines based on the measurement data and preferentially displays it on the monitoring screen 60. When a subject who needs to do so, for example, a subject who has been sleeping continuously for t-3 hours and is in a prone state, is confirmed, the subject has higher priority than the subject whose initial data monitoring priority rank is high. Is displayed on the monitoring screen 60. Further, when there are a plurality of subjects having the same priority based on the measurement data, the one having the higher monitoring priority rank based on the ID information is preferentially displayed on the monitoring screen 60. Therefore, since the monitored persons 11 to 13 displayed on the monitoring screen 60 and their display positions are constantly changing based on the measurement data transmitted during monitoring and the priority rank, the observer has a high degree of risk. It is possible to constantly grasp the monitored persons 11 to 13 in real time, and it is possible to effectively suppress the occurrence of SIDS.

The monitoring screen 60 preferably has an identification element that makes it easy for the observer to visually identify instantly. In the present embodiment, the outer frames 61a-63a of each icon display 61-63 are red, blue, and yellow. Etc. are given different colors that can be distinguished from each other. The colors of the outer frames 61a-63a can be used not only to identify each icon display 61-63, but also to call attention to the observer. That is, for example, when the monitoring priority rank obtained from the basic information is low (ranks 1 to 3), the priority rank is visually such as blue, and when the priority rank is high (ranks 4 and 5), the priority rank is red. The outer frame of the icon display 61-63 corresponding to the monitored persons 11 to 13 having a high risk in real time by comprehensively judging the actual measurement data and the priority rank. 61a-63a may be blinked or discolored.

After inputting the ID into each icon display 61-63 and acquiring the ID information, the monitoring mode is started by clicking the monitoring button (not shown) on the monitoring screen 60 (S104). The control unit 31 of the computer device 30 acquires the measurement data transmitted from the sensor unit 20 (S105), and the sleeping posture determination unit 45 determines the sleeping posture of the subject. The sleeping posture determination unit 45 determines whether the monitored persons 11 to 13 are in the supine, lying, or prone position (S106). When the monitored subjects 11 to 13 are in the lying state or the prone position, the awakening / sleep determination unit 46 determines whether the subject is awake or sleeping (S107).

Next, in the alarm determination unit 47, when the monitored persons 11 to 13 are in a lying state and are in a sleeping state continuously for t-2 hours, a warning signal for displaying a second warning is transmitted. When the monitored persons 11 to 13 are in a prone state and are in a sleeping state continuously for t-3 hours, a warning signal for displaying a third warning is transmitted (S108).

Further, even if the awakening / sleep determination unit 46 determines that the patient is in the awake state, if the lying or prone position continues for t-1 hours, the alarm determination unit 47 displays the first warning. Is transmitted (S108). In this way, even during awakening, the occurrence of SIDS can be prevented by displaying the first warning when the lying or prone position is continued.

When a warning signal related to the first to third warning displays is output, the observer instructs himself or another observer near the monitored persons 11 to 13 to sleep on the monitored persons 11 to 13. Correct your posture so that you are lying on your back. When the sleeping postures of the monitored persons 11 to 13 notified of the first to third warning displays are in the supine position, the first to third warning displays are stopped, the monitoring mode is reset, and the process ends (S110). However, the monitoring mode is newly started (S104) unless the monitoring mode itself is terminated, such as when the observer terminates the application.

Explaining a specific example of the monitoring flow of the monitoring system 10, for example, as shown in FIG. 5A, in the monitoring mode, the sleeping posture determination unit 45 of the control unit 31 is based on the measurement data of the sensor unit 20. When it is determined that the subject 11 is in the prone position, the subject 12 is in the lying position, and the subject 13 is in the supine state, whether or not the subjects 11 and 12 are sleeping in the awakening / sleep determination unit 46. To judge. As a result, when the subjects 11 and 12 are sleeping, the alarm determination unit 47 transmits a warning signal for the second and third warning displays, and the alarm unit 35 displays a warning. Even when the subjects 11 and 12 are not sleeping in the awakening / sleep determination unit 46, if the subjects 11 and 12 continue to lie down and lie down for t-1 hours, a warning for displaying the first warning is given. A signal is sent and a warning is displayed.

On the other hand, the monitoring mode is continuously continued for the subject 13 in the supine state, and the body movement data from the sensor unit 20 is acquired every sampling time. If the subjects 11 and 12 are in the prone and lying positions during awakening and have not continued (cumulative) for t-1 hours, the monitoring mode is continuously continued, and the prone and lying states are t. -When it is continued (cumulative) for 1 hour, the warning signal for the first warning display is output. If there is another observer near the monitored persons 11 to 13 other than the observer who is monitoring the monitoring screen 60 of the computer device 30, a warning signal is transmitted to the mobile terminal owned by the other observer. When the warning is displayed, other observers promptly correct the sleeping postures of the subjects 11 and 12 to the supine position. As shown in FIG. 5 (b), the symbol elements 61b-63b of the icon display 61-63 are changed and the monitoring mode is reset by correcting the sleeping postures of the subjects 11 and 12, and the monitoring mode is newly reset. Is started.

The processing of each step (S101 to S110) in the flowchart of FIG. 7 is performed according to the monitoring program stored in the storage unit 32 of the computer device 30. In the monitoring system 10 according to the present embodiment, the configuration in which the control program performs centralized processing by a single computer device has been described, but the present invention is not limited to this. For example, it is possible to store all or part of the program in a plurality of computer devices connected to the network, and perform distributed processing via the network, that is, a so-called cloud-type configuration. Further, the acceleration sensor 21 is used as the detection means of the sensor unit 20, but the present invention is not limited to this, and for example, it is configured by combining one or more strain gauges, piezoelectric sensors, temperature sensors, etc., and is in any area of clothing. By arranging them in, it is also possible to determine the sleeping posture of the wearer.

The processing of each step (S101 to S110) in the flowchart of FIG. 7 is performed according to the program stored in the ROM or the like of the control unit 31 of the computer device 30. Further, this process is executed by multitasking in parallel with other various processes of the control unit 31.

In the monitoring system 10 for SIDS prevention according to the present embodiment, it is necessary to use only the acceleration sensor 21 as the detection means of the sensor unit 20 and to install a dedicated monitoring camera or computer device for each target person in addition to the sensor unit 20. Since there is no SIDS, it is possible to prevent the occurrence of SIDS more easily and cheaply than in the conventional monitoring system. Further, when monitoring more than the number of target persons that can be displayed on the monitoring screen 60 at the same time, it is transmitted from the sensor unit 20 by introducing a monitoring priority system by the priority determination unit 44 and the priority ranking processing unit 48. It is possible to preferentially select the target person to be displayed on the monitoring screen together with the measurement data, and to instantly determine the monitoring target person 11 to 13 that may cause SIDS in real time.

<Second Embodiment>
FIG. 8 is a schematic configuration diagram of the monitoring system 200 according to the second embodiment of the present invention. The monitoring system 200 according to the present embodiment includes a server (server device) 210, a plurality of mobile terminals (information terminals) 220 and 230 carried by the observer, and a sensor unit 240. The mobile terminals 220 and 230 and the server 210 are interconnected via the computer network 202 and the mobile communication network 203, and the program executed by the mobile terminals 220 and 230 and the monitoring program executed by the server 210 are. , Hypertext transfer protocol (HTTP) and other communication protocols are used for communication. The mobile terminals 220 and 230 are a plurality of mobile terminals that can be connected to each other.

The mobile terminals 220 and 230 allow the observer to input the ID information of the target person and execute the monitoring mode, and are the terminal communication unit 221,231, the terminal storage unit 222,232, and the terminal operation. It includes units 223, 233, terminal display units 224, 234, terminal processing units (liquid crystal screen, etc.) 225, 235, and terminal alarm units 226, 236. The mobile terminals 220 and 230 execute the monitoring mode setting and the warning display according to the operation of the terminal operation units 223 and 233 by the observer. The mobile terminals 220 and 230 are common as client devices for executing a control program downloaded from the server 210, and are a notebook personal computer and a mobile information terminal (in addition to a multifunctional mobile phone (smartphone) having a touch panel). It may be a PDA), a portable game machine, a tablet PC, or the like.

The terminal communication units 221,231 have a communication interface circuit for connecting a terminal to the mobile communication network 203. The terminal communication units 221,231 send the data received from the server 210 via the computer network 202 and the mobile communication network 203 to the terminal processing units 225 and 235. Further, the data received from the terminal processing units 225 and 235 is transmitted to the server 210 via the mobile communication network 203 and the computer network 202. As the computer network 202, any network that enables communication between computers can be applied, and the Internet is used here. As the mobile communication network 203, any mobile communication device such as a mobile phone, a smartphone, and a tablet terminal that enables computer notification can be applied.

The terminal storage unit 222,232 has, for example, at least one of a semiconductor memory, a magnetic disk, and an optical disk. The terminal storage units 222 and 232 store various programs and data used for controlling the mobile terminals 220 and 230. The terminal storage units 222 and 232 store, for example, ID information, basic information, a program for executing the monitoring mode, etc. of the monitored person received from the server 210. The terminal storage units 222 and 232 can also temporarily store data related to a predetermined process.

The terminal processing units 225 and 235 are composed of one or a plurality of processors and peripheral circuits thereof, and are capable of executing a monitoring program (application), and are control units of the computer device 30 of the first embodiment. It corresponds to 31, and has a functional configuration such as an ID collation unit, a time measurement unit, a sleeping posture determination unit, an awakening / sleep determination unit, and an alarm determination unit. However, the terminal processing units 225 and 235 may execute these processes, or the server 210 executes the processes based on the data transmitted from the mobile terminals 220 and 230 and transmits the data to the mobile terminals 220 and 230. You may.

The terminal alarm units 226, 236 display a warning based on the warning signal transmitted from the mobile terminals 220, 230 or the server 210. As a warning display method, in addition to the warning image displayed on the terminal display units 224 and 234 of the mobile terminals 220 and 230, there are a warning sound emitted through the speaker, a warning vibration by the vibration function, etc. One or more of these display methods may be combined as long as they can be quickly sensed. The terminal operation units 223 and 233 may be any device as long as the mobile terminals 220 and 230 can be operated, such as a touch panel and a keyboard. As the terminal display units 224 and 234, known devices can be used without limitation as long as they can display a monitoring screen, and are, for example, a liquid crystal display, an organic EP display, and the like.

The server 210 provides a monitoring program to the mobile terminal in response to a request from the mobile terminals 220 and 230, and has a server communication unit 211, a server storage unit 212, and a server processing unit 213.

The server communication unit 211 has a communication interface circuit for connecting the server 210 to the Internet. The server communication unit 211 sends data received from the mobile terminals 220 and 230 via the mobile communication network 203 and the computer network 202 to the server processing unit 213. Further, the data (signal) received from the server processing unit 213 is sent to the mobile terminals 220 and 230 via the computer network 202 and the mobile communication network 203. The server storage unit 212 has, for example, at least one of a semiconductor memory, a magnetic disk device, and an optical disk device.

In the monitoring system 200 according to the present embodiment, the monitoring program stored in the mobile terminals 220 and 230 is started, and the recognition (login) number assigned to each observer is input to the initial screen to log in. After logging in, enter various necessary information such as the date and time when monitoring is executed, the identification number of the sensor unit 240 to be used, and the ID of the person to be monitored. Next, the ID information / basic information corresponding to the ID of the target person is acquired from the server 210, and the monitoring mode is started. The flow after the start of the monitoring mode is the same as that of the first embodiment shown in FIG. 7, and when it is determined by the warning determination unit of the terminal processing units 225, 235 or the server processing unit 213 that a warning is required. A warning is displayed by the terminal alarm units 226, 236 of the mobile terminals 220 and 230. By connecting a plurality of mobile terminals 220 and 230 to each other via Internet communication in this way, the monitoring screen 60 is displayed on the terminal display units 224 and 234 of each mobile terminal 220 and 230, and thus the first embodiment. Information sharing between observers can be performed more speedily and the monitoring program can be easily executed as compared with the case of monitoring via the computer device 30 as described above.

Also in this embodiment, the processing of each step (S101 to S110) in the flowchart of FIG. 7 is performed according to the monitoring program stored in the terminal storage unit 222 or the server storage unit 212 of the server 210. Further, this process is executed by multitasking in parallel with various other processes in the terminal processing unit 225 or the server processing unit 213.

The terms such as "first" and "second" used in the present specification are used only for distinguishing similar elements, positions, and the like.

10 Monitoring system for SIDS prevention (monitoring system)
11, 12, 13 Surveillance target person (target person)
20 Sensor unit (sensor)
30 Computer device (computer)
35 Alarm unit 43 Body motion detection unit 44 Priority determination unit 45 Sleeping posture determination unit 46 Awakening / sleep determination unit 47 Alarm determination unit 60 Monitoring screen 61, 62, 63 Icon display 200 SIDS prevention monitoring system (monitoring system)
210 server (computer)
240 Sensor unit (sensor)

Claims (8)

It is equipped with a plurality of sensors for detecting the movement of a plurality of monitored persons in a sleeping posture and a computer capable of communicating with the plurality of sensors.
The computer has a body motion detection unit that detects body motion based on data transmitted from the sensor, and a body motion detection unit.
A sleeping posture determination unit that determines the sleeping posture of the monitored person based on the detected body movement data, and a sleeping posture determination unit.
A priority determination unit that determines the priority of the icon displayed preferentially on the monitoring screen based on the determined sleeping posture of each monitoring target person.
The awakening / sleep determination unit that determines the awakening / sleep of the monitored person based on the body movement data,
An alarm determination unit that outputs a warning signal when it is determined that the prone state of the monitored person continues for a predetermined time and the continuation time exceeds a predetermined determination threshold value based on the determination result of the sleeping posture determination unit. A monitoring system to prevent SIDS with. The sleeping posture determination unit can determine the supine state, the prone state, and the lying state in the sleeping posture of the monitored person, and the icon display has a different form depending on the posture of the monitored person according to claim 1. The monitoring system described. A warning signal is also output when it is determined that the lying state of the monitored person has continued for a predetermined time and the duration exceeds a predetermined determination threshold value, and the warning signal in the lying state and the warning signal in the lying state The monitoring system according to claim 1 or 2, wherein the determination thresholds are different. Claim 1-3, which further has the awakening / sleep determination unit for determining the awakening / sleep of the monitored person based on the body movement data, and the output mode of the warning signal differs between the sleeping state and the awakening state. The monitoring system described in any of. The monitoring system according to any one of claims 1-4, wherein the sensor has an acceleration sensor and the sampling period by the acceleration sensor is 0.2 to 2.0 Hz. The monitoring system according to any one of claims 1-5, wherein the sensor can be attached to the clothes of the person to be monitored, and a warning signal is transmitted when the sensor is removed from the clothes. The monitoring system according to any one of claims 1 to 6, wherein a warning signal is transmitted by detecting a plurality of turns of the monitored person. It is equipped with a plurality of sensors for detecting the movement of a plurality of monitored persons in a sleeping posture and a computer capable of communicating with the plurality of sensors.
The computer has a body motion detection unit that detects body motion based on data transmitted from the sensor, and a body motion detection unit.
A sleeping posture determination unit that determines the sleeping posture of the monitored person based on the detected body movement data, and a sleeping posture determination unit.
The awakening / sleep determination unit that determines the awakening / sleep of the monitored person based on the body movement data,
It is provided with an alarm determination unit that outputs a warning signal when it is determined that the prone state of the monitored person has continued for a predetermined time based on the determination result of the sleeping posture determination unit.
A monitoring system for preventing SIDS in which the sensor has an acceleration sensor and the sampling period by the acceleration sensor is 0.2 to 2.0 Hz.

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