CN209916005U - Bed-leaving prediction device - Google Patents
Bed-leaving prediction device Download PDFInfo
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- CN209916005U CN209916005U CN201822051912.8U CN201822051912U CN209916005U CN 209916005 U CN209916005 U CN 209916005U CN 201822051912 U CN201822051912 U CN 201822051912U CN 209916005 U CN209916005 U CN 209916005U
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Abstract
The present invention relates to a bed exit prediction device for measuring the state of a person to be measured in a bed-ridden state over time and predicting a bed exit state based on the obtained result, and an object of the present invention is to enable easy grasp of the trend of biological information and enable bed exit prediction based on periodic variations and variations over time. The out-of-bed state of the subject is predicted based on the intensity (pressure value, vibration value) obtained by measuring the biological information of the subject using a pressure sensor and a vibration sensor provided on the surface of the flat plate. The pressure sensor and the vibration sensor are provided on a straight line orthogonal to the body length direction of the person to be measured when lying in bed. The pair of vibration sensors are provided at a predetermined interval in the width direction of the bed.
Description
Technical Field
The present invention relates to an out-of-bed prediction device, and more particularly, to an out-of-bed prediction device that measures the state of a person to be measured who is in a bed-ridden state over time and predicts the out-of-bed state based on the obtained result.
Background
At present, an advanced society of very young people has been introduced, and the necessity of appropriately grasping biological information of a person to be measured in bed (for example, a person to be cared, a patient suffering from dementia, alzheimer disease, or the like) is increasing not only in hospitals but also in staff of care facilities or family members who care at home.
Under such circumstances, conventionally, as a device for outputting various kinds of information, a device for calculating an average value or an integrated value of a long period (1 week, 1 month, or the like) from a numerical value (average value or integrated value) per unit time and displaying a graph, and a method for displaying a measurement value at a measurement time in time series per unit time and displaying the graph per unit time in the same manner have been known. In particular, hospitals, nursing staff, family members in home care, and the like need a system for confirming periodic variation and variation with time based on continuous numerical data of biological information of a subject, detecting and reporting an abnormal state.
Therefore, patent document 1 has been proposed as a device that a user can easily grasp continuous numerical data of biological information (for example, the number of breaths, the number of heartbeats, and body movement).
Patent document 1: japanese patent laid-open publication No. 2016-144627.
However, in patent document 1, the sleep of the subject is evaluated by detecting the respiration of the subject using a pressure sensor or a piezoelectric element (microphone) with respect to continuous numerical data of biological information (for example, the number of breaths, the number of heartbeats, body movement, and the like), and in the system described in patent document 1 and a conventional measurement system when the subject is in bed, the disturbance (noise) of a signal is large, and it is difficult to predict the leaving of the bed of the subject.
General practitioners, not experts, need to use appropriate biological information with less interference in order to grasp the trend of biological information when the patient is in bed and to appropriately predict the behavior. The present applicant has also paid attention to the pressure and vibration applied to bedding when a subject is lying in bed, and has come to recognize that it is possible to predict the leaving of the bed based on the pressure and vibration applied to bedding, and completed the present invention.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, it is an object of the present invention to provide a bed exit prediction device that can easily grasp the trend of biological information and can predict bed exit based on periodic fluctuations and temporal fluctuations.
The utility model described in claim 1 is an out-of-bed prediction device which is provided below a person to be measured who is in a bed-ridden state, measures biological information (information generated by the movement of the person to be measured) of the person to be measured, and predicts the out-of-bed state of the person to be measured, wherein a pressure sensor and a vibration sensor are provided on a surface of a flat plate of the out-of-bed prediction device, and the pressure sensor and the vibration sensor are provided on a straight line orthogonal to the body length direction of the person to be measured when the person is in the bed.
The present invention detects pressure and vibration applied to bedding (bed) by a pressure sensor and a vibration sensor, and predicts the state of a person to be measured from the change with time of intensity (pressure value, vibration value), and predicts the leaving of the bed. In this case, the calibration (0 adjustment) is performed in a state where the subject is away from the bedding. By performing calibration, IT is easy to determine a state where a subject is seated on bedding, a state where the subject is lying in bed, a state where the subject is turning over, a state where the subject is going to get out of bed, and the like, by using IT equipment based on a signal detected from a sensor.
In addition, since only two types of sensors, i.e., a pressure sensor and a vibration sensor, are used in the bed exit prediction, the interference of signals is small, and the bed exit prediction can be accurately performed.
The utility model described in claim 2 is the off-bed prediction device according to claim 1, wherein the number of the pressure sensors is more than one, and the number of the vibration sensors is more than two; the pressure sensor and the vibration sensor are provided at positions on the flat plate which are line-symmetrical about a straight line extending in the body length direction of the subject at a position corresponding to a half of the width of the bed.
According to technical scheme 2 utility model, pressure sensor and vibration sensor not only are provided with a plurality ofly, still for measurand person's length direction, use the straight line that extends along this direction to be line symmetry and set up on the flat board as the center to grasp easily that measurand person's focus position is in where, the result can more accurately carry out the prediction of leaving the bed.
Therefore, when an external notification device that detects an abnormality of a subject and notifies the outside is connected to the out-of-bed prediction device of the present invention, the number of wrong notifications (misinformation) to the outside can be reduced, and the burden on a staff member in a hospital or a nursing facility or a family member in home care can be reduced.
In addition, in the case where there is one pressure sensor, the pressure sensor is provided on a straight line extending in the body length direction of the person to be measured at a position of the flat plate which is half the width of the bed.
In the present invention, the pressure and vibration applied to bedding (bed material or the like) are detected by the pressure sensor and the vibration sensor, and the state of the person to be measured is predicted from the change with time in the intensity (pressure value, vibration value) of these pressure and vibration, and the bed exit prediction is performed, whereby not only the state where the person to be measured sits on the bedding (bed), the state of lying in bed, the state of turning over, the state of going to leave the bed, and the like are easily determined by using IT equipment, but also since only two kinds of sensors, i.e., the pressure sensor and the vibration sensor, are used in the bed exit prediction, the interference of signals is small, and the bed exit prediction can be accurately performed.
In particular, according to the utility model described in claim 2, the pressure sensor and the vibration sensor are provided not only in plural but also on the flat plate in a manner symmetrical with respect to the body length direction of the person to be measured, so that it is easy to grasp where the barycentric position of the person to be measured is located, and as a result, it is possible to predict the leaving of the bed more accurately.
Therefore, when an external notification device that detects an abnormality of a subject and notifies the outside is connected to the out-of-bed prediction device of the present invention, the number of wrong notifications (misinformation) to the outside can be reduced, and the burden on a staff member in a hospital or a nursing facility or a family member in home care can be reduced.
Drawings
Fig. 1 is a diagram illustrating an overall configuration of an out-of-bed prediction apparatus according to embodiment 1 of the present invention.
Fig. 2 is a flowchart showing a procedure of performing the out-of-bed prediction in the out-of-bed prediction apparatus according to embodiment 1 of the present invention.
Fig. 3 is a diagram for explaining the overall configuration of the bed exit prediction apparatus according to embodiment 2 of the present invention.
Detailed Description
Hereinafter, a preferred embodiment for carrying out the present invention will be described. It is needless to say that the present invention is not limited to the following embodiments.
(example 1)
The bed exit prediction device 10 according to embodiment 1 of the present invention includes: a sensor portion 10A having a rectangular plate shape, the sensor portion 10A being placed between a bed plate portion (for example, made of a wood plate or a steel plate) of the bed 100 and the mat 110; and a processing device 10B for processing the signal output from the sensor portion 10A by the processing device 10B.
The sensor portion 10A is formed of a plastic plate material 11 having a length of about 60cm, a width of about 20cm, and a thickness of about 1cm, and specifically, two plastic flat plates are stacked, and four corners and long side intermediate portions of these flat plates are fixed by 6 screws in total to be integrated. Further, a large-diameter screw is used, and the thread ridge is made of steel, thereby preventing loosening of the thread due to change over time and the like. This results in an improvement in the sensing accuracy of the sensor.
The rectangular sensor portion 10A is provided such that the longitudinal direction thereof is the width direction of the bed 100, and the rectangular plate-like sensor portion 10A is offset by a predetermined distance toward the head placement side (the bedside side) from the half of the longitudinal direction of the bed 100.
Of these plate materials 11, two (a pair of) vibration sensors 12 and one pressure sensor 13 are attached to the surface of the plate material 11 that contacts the bed plate portion of the bed 100.
The vibration sensor 12 and the pressure sensor 13 are arranged on a straight line with respect to the longitudinal direction of the rectangular sensor portion 10A, and the pair of vibration sensors 12 are attached at positions that are line-symmetrical with respect to the central axis in the width direction of the sensor portion 10A. The pressure sensor 13 is mounted at a position half way along the length of the rectangular plate material 11. That is, the pressure sensor 13 is provided on the central axis in the longitudinal direction of the sensor portion 10A, and the pair of vibration sensors 12 is provided so as to be spaced outward from the center thereof with respect to the longitudinal direction of the sensor portion 10A.
The vibration sensor 12 and the pressure sensor 13 are connected to the processing device 10B via wires.
The sensor unit 10A is placed between the bed plate of the bed 100 and the mat 110. At this time, the sensor unit 10A is placed so that the width direction of the bed plate portion of the bed 100 is substantially the same as the longitudinal direction of the sensor unit 10A. The sensor portion 10A made of a plastic plate material is accommodated in a bag-shaped cover made of plastic, for example. The cover uses a bag made of a high-strength material, and is prevented from being damaged or displaced by an anti-slip structure (a concave-convex surface or the like).
The processing device 10B receives the vibration signals and the pressure signals transmitted from the vibration sensor 12 and the pressure sensor 13 via the wiring, and performs arithmetic control of these inputs by a CPU or the like, thereby performing a bed-out prediction with respect to the subject. Further, the processing device 10B may transmit and receive signals to and from the sensor device 10A via wireless. The processing device may be configured in a server or the like in another room.
Hereinafter, a specific process will be described with reference to fig. 2.
First, when no one is present on the bedding, a calibration operation is performed in which the vibration and pressure of the vibration sensor 12 and the pressure sensor 13 are set to 0. Then, signals of the vibration sensor 12 and the pressure sensor 13 are acquired at any time or at predetermined time intervals. In the present embodiment, the calibration work is performed when no person is present on the bedding, but the calibration work may be performed in a state where the subject is lying in bed.
On the mat 110, if a person to be measured who is a user is in a bed, pressure and vibration are applied to the sensor portion 10A via the mat 110. At this time, the pressure and vibration are detected by the vibration sensor 12 and the pressure sensor 13. Then, the detection signal is input to the processing device, and the processing device 10B (in the CPU) executes a predetermined program based on the detected vibration and pressure to determine whether or not the user is in the bed.
Specifically, the detected pressure is lower than the pressure in bed rest, and when the detected signals are compared with the signals detected from the left and right vibration sensors 12, and when a strong vibration is received by one of the left and right vibration sensors 12, it is apparent that the seat is on the side of the vibration sensor 12 that receives the strong vibration.
Further, when a strong pressure is applied and there is no significant difference in the intensity of the left and right vibrations when comparing the vibrations detected from the left and right vibration sensors 12, it can be said that the subject is in bed.
In addition, in the case of turning over, a strong pressure is applied, and only the vibration sensor at the position opposite to the direction in which the turning over is performed receives strong vibration.
When it is desired to get up, the left and right vibration sensors 12 receive strong vibration, and in the case of measuring the pressure received by the pressure sensor 13 over time, it is gradually decreased. In this case, the person to be measured can be predicted to get out of bed after a certain time.
In this way, by providing 2 vibration sensors 12 and 1 pressure sensor 13 in the sensor unit 10A, it is possible to perform accurate bed exit prediction.
(example 2)
Although 1 pressure sensor 12 is provided in the bed exit prediction apparatus 10 according to embodiment 1 of the present invention, 2 pressure sensors 22 are provided in the sensor unit 20A in the bed exit prediction apparatus 20 according to embodiment 2.
The sensor unit 20A is configured by overlapping two plastic plate materials 21 having a length of about 60cm, a width of about 20cm, and a thickness of about 1cm, and fixing four corners with screws.
Two vibration sensors 22 and two pressure sensors 23 are attached to the surface of one plate member 21 of the plate members 21 that contacts the top plate of the bed 100.
The pair of vibration sensors 22 and the pair of pressure sensors 23 are arranged on a straight line with respect to the longitudinal direction with respect to the sensor portion 20A. Further, a vibration sensor 22 and a pressure sensor 23 are attached to the sensor portion 20A at positions that are line-symmetrical with respect to the center in the longitudinal direction. That is, the pair of pressure sensors 23 are provided close to the center in the longitudinal direction of the rectangular sensor portion 20A, and the pair of vibration sensors 22 are provided outside the pressure sensors 23 in the longitudinal direction of the sensor portion 20A.
The other structures are the same as those in embodiment 1, and therefore, the description thereof is omitted.
In the sensor unit 20A, the pair of pressure sensors 23 is provided, so that it is easy to determine where the center of gravity of the subject is located on the mat 110. That is, the pressure on the left and right sides is substantially equal when lying in bed, but in the case of turning over, the pressure sensor 23 located in the direction of turning over receives a strong pressure, and the pressure sensor 23 provided in the opposite direction receives a weak pressure.
Further, the pressure received by the pressure sensor 23 that is equal to the left and right in the case of getting up gradually becomes smaller. At this time, if there is a pressure difference between the right and left sides, it is known that, for example, the user tries to get up by grasping the armrest of the bedding. In this case, it is possible to predict that the subject will get out of the bed after a certain time period has elapsed.
As described above, the bed exit prediction apparatus 20 according to the present embodiment can perform accurate bed exit prediction as compared with the bed exit prediction apparatus 10 according to embodiment 1.
(example 3)
In the bed exit prediction apparatus according to embodiment 3 of the present invention, a vibration sensor is additionally provided via a sensor line in the bed exit prediction apparatus 20 according to embodiment 2.
For example, in the case where two independent bedding elements are arranged to form one bedding element, the vibration sensor is attached to one of the bedding elements, which is positioned on the head of the subject when the subject is lying in bed, and the sensor section is provided on the other bedding element.
When two independent bedding elements are arranged to form one bedding element, it is possible to predict the leaving of the bed even when vibration or pressure applied to one bedding element is not transmitted to the other bedding element.
In the above-described bed exit prediction apparatus, the information of the network camera, the information of other sensors, and the like are added, so that the bed exit prediction can be performed more accurately (the state of the bed can also be confirmed). Further, abnormal behavior of the person to be measured in the bed can be detected. For example, measurement of cramps and the like. Further, an alarm or the like can be issued for a certain time of getting out of bed. By using a plurality of beds as the measurement subjects, a plurality of subjects can be cared for.
Further, since the measurement values of pressure and vibration may be lowered in a state where the bed is lifted, it is also possible to automatically adjust the threshold value for determination such as notification by adopting an automatic gain at the time of lifting.
Description of the reference numerals
10. 20 prediction device of leaving bed
11. 21 plate
12. 22 vibration sensor
13. 23 pressure sensor.
Claims (2)
1. A bed-leaving prediction device which is provided below a person to be measured who is lying in bed, measures biological information accompanying the movement of the person to be measured, and predicts a bed-leaving state of the person to be measured,
the pressure sensor and the vibration sensor are provided on a surface of a flat plate provided on a top board, and the bed-leaving prediction device predicts the bed-leaving state based on information from these sensors.
2. An out-of-bed prediction apparatus as claimed in claim 1,
the flat plate is rectangular and is configured to extend along the width direction of the bed plate along the length direction of the flat plate;
the number of the pressure sensors and the number of the vibration sensors are more than 2;
the pressure sensor and the vibration sensor are provided at positions that are line-symmetrical about a straight line extending in the longitudinal direction of the bed at a position halfway across the width of the bed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-003219 | 2018-08-21 | ||
| JP2018003219U JP3218676U (en) | 2018-08-21 | 2018-08-21 | Bed leaving prediction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209916005U true CN209916005U (en) | 2020-01-10 |
Family
ID=64012564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822051912.8U Expired - Fee Related CN209916005U (en) | 2018-08-21 | 2018-12-07 | Bed-leaving prediction device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3218676U (en) |
| CN (1) | CN209916005U (en) |
| TW (1) | TWM575166U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111413014A (en) * | 2020-03-24 | 2020-07-14 | 北京大学深圳医院 | Optical fiber pressure detection system |
| CN115413236A (en) * | 2020-03-31 | 2022-11-29 | Infic株式会社 | Out-of-bed prediction notification device and program |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI757092B (en) * | 2021-02-09 | 2022-03-01 | 臺北醫學大學 | Mattress with function of detecting sleep state of user |
-
2018
- 2018-08-21 JP JP2018003219U patent/JP3218676U/en active Active
- 2018-11-09 TW TW107215262U patent/TWM575166U/en not_active IP Right Cessation
- 2018-12-07 CN CN201822051912.8U patent/CN209916005U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111413014A (en) * | 2020-03-24 | 2020-07-14 | 北京大学深圳医院 | Optical fiber pressure detection system |
| CN111413014B (en) * | 2020-03-24 | 2022-06-28 | 北京大学深圳医院 | Optical fiber pressure detection system |
| CN115413236A (en) * | 2020-03-31 | 2022-11-29 | Infic株式会社 | Out-of-bed prediction notification device and program |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM575166U (en) | 2019-03-01 |
| JP3218676U (en) | 2018-11-01 |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200110 Termination date: 20201207 |
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| CF01 | Termination of patent right due to non-payment of annual fee |