CN112155526A - Sleep monitoring device and control method thereof - Google Patents
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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
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/0205—Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
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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
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
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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
- A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/1113—Local tracking of patients, e.g. in a hospital or private home
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
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- A—HUMAN NECESSITIES
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6887—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient mounted on external non-worn devices, e.g. non-medical devices
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- A—HUMAN NECESSITIES
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- 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
- A61B2562/0247—Pressure sensors
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Abstract
The invention relates to a sleep monitoring device and a control method thereof. Comprises two pressure sensors, a piezoelectric film sensor and a controller. The two pressure sensors and the piezoelectric film sensor are horizontally arranged at intervals, the piezoelectric film sensor is arranged between the two pressure sensors, the pressure sensors detect pressure generated by the outside, the piezoelectric film sensor is used for capturing physiological signals of a user, and the controller is electrically connected with the two pressure sensors and the piezoelectric film sensor. When the user lies on one side, no matter the user leans to the left side of the sleep monitoring device or the right side of the sleep monitoring device, at least one pressure sensor can detect the pressure generated by the user, and the controller controls the piezoelectric film sensor to work according to the pressure detected by the pressure sensor. The accuracy of judging whether the user is out of bed or in bed is improved.
Description
Technical Field
The invention relates to the technical field of physiological signal acquisition, in particular to a sleep monitoring device and a control method thereof.
Background
With the increasing sleep health awareness of the public, the sleep problems have gradually become one of the most concerned problems, and a sleep monitoring device has been developed based on the needs, so that the sleep monitoring device can help people to know the sleep condition, discover the sleep problems as soon as possible, change the bad sleep habits, and help patients to discover the disease problems caused by sleep disorders as soon as possible and master the best time for treating the diseases.
The conventional sleep monitoring device is provided with a pressure sensor and a piezoelectric film sensor, the piezoelectric film sensor is used for collecting human heartbeat BCG signals, the pressure sensor is used for identifying information such as being in a bed and getting out of the bed, different users have different sleep postures, the users easily leave the detection range of the pressure sensor when lying on the side, and the sleep monitoring device can judge that the users get out of the bed at the moment and stop monitoring sleep information, so that the sleep information is inaccurate.
Disclosure of Invention
The invention aims to solve the technical problem that a sleep monitoring device and a control method thereof are provided, and aims to solve the problem that the sleeping posture of the user lying on the side in the prior art can cause the sleep monitoring device to judge that the user is in a bed leaving state.
In a first aspect, the present invention provides a sleep monitoring device comprising: the piezoelectric film sensor comprises two pressure sensors, a piezoelectric film sensor and a controller, wherein the two pressure sensors are horizontally arranged at intervals and used for detecting the pressure generated by the outside, the piezoelectric film sensor and the two pressure sensors are horizontally arranged and arranged between the two pressure sensors, the piezoelectric film sensor is used for capturing the physiological signal of a user, the controller is electrically connected with the two pressure sensors and the piezoelectric film sensor, and the controller is used for controlling the work of the piezoelectric film sensor according to the pressure detected by the pressure sensors.
Furthermore, the pressure sensor comprises a plurality of sensing units, and the sensing units are arranged at intervals along the pressure sensor.
Further, the pressure sensor further comprises a guide which is attached to the surface of the sensing unit.
The piezoelectric sensor further comprises two reinforcing layers, and the two pressure sensors and the piezoelectric film sensor are arranged between the two reinforcing layers and are wrapped together by the two reinforcing layers.
Furthermore, the reinforced plastic composite material further comprises two insulating layers, wherein the two reinforcing layers are arranged between the two insulating layers and are wrapped by the two insulating layers.
Further, the cloth material layer comprises two cloth material layers, wherein the insulating layers are arranged between the two cloth material layers and are wrapped by the two cloth material layers.
Furthermore, the two pressure sensors and the piezoelectric film sensor are packaged and protected by adopting a hot pressing process, and an avoidance layer is arranged on the periphery of the two pressure sensors.
Furthermore, the packaging thickness of the two pressure sensors is larger than 5mm, and the two pressure sensors are packaged by adopting a soft material.
In a second aspect, the present invention provides a method for controlling a sleep monitoring apparatus according to any one of the first to third aspects, the method comprising: receiving a starting signal; acquiring a first pressure value on the pressure sensor; comparing the first pressure value with a preset pressure threshold value; when the first pressure value is greater than or equal to the preset pressure threshold value, setting the first pressure value as an initial pressure value; acquiring a second pressure value on the pressure sensor; judging whether the second pressure value meets a preset condition or not according to the initial pressure value; and when the second pressure value meets the preset condition, judging that the user is in a bed state.
Further, the determining whether the second pressure value meets a preset condition according to the initial pressure value further includes: comparing the second pressure value to the initial pressure value; when the second pressure value is larger than the initial pressure value, judging that the second pressure value meets a preset condition; or, further comprising: calculating a deviation value of the second pressure value and the initial pressure value; comparing the deviation value with a preset deviation threshold value; and when the second pressure value reaches the preset deviation threshold value, judging that the second pressure value meets a preset condition.
The invention has the beneficial effects that: the two sides of the piezoelectric film sensor in the same horizontal direction are respectively provided with the pressure sensor, wherein the two pressure sensors are used for detecting the pressure generated by the outside, and the piezoelectric film sensor is used for capturing the physiological signals of a user. When the user lies on one side, no matter the user leans to the left side of the sleep monitoring device or the right side of the sleep monitoring device, at least one pressure sensor can detect the pressure generated by the user, and the controller is used for controlling the piezoelectric film sensor to work according to the pressure detected by the pressure sensor. Not only improves the accuracy of judging whether the user is out of bed or in bed. And the acquisition source of the respiratory signal is increased, and the accuracy of the respiratory signal is improved.
Drawings
The following detailed description of embodiments of the invention will be made with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of the overall structure of the sleep monitoring device of the present invention;
FIG. 2 is a schematic diagram of the pressure sensor configuration of the present invention;
FIG. 3 is a cross-sectional view of one embodiment of a sleep monitoring device of the present invention;
FIG. 4 is a cross-sectional view of another embodiment of a sleep monitoring device of the present invention;
FIG. 5 is a flow chart of a method of controlling a sleep monitoring device according to an embodiment of the invention;
FIG. 6 is a flowchart illustrating the sub-steps of one embodiment of step S150;
FIG. 7 is a flowchart illustrating sub-steps of step S150 according to another embodiment of the present invention;
the figures are numbered:
1. a pressure sensor; 11. a sensing unit; 2. a piezoelectric thin film sensor; 3. a reinforcement layer; 4. an insulating layer; 5. a cloth layer; 6. and (5) avoiding the blank layer.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
The invention provides a sleep monitoring device, which comprises two pressure sensors 1, a piezoelectric film sensor 2 and a controller, as shown in figure 1. The two pressure sensors 1 and the piezoelectric film sensor 2 are horizontally arranged at intervals, and the pressure sensors 1 are used for detecting pressure generated by the outside. The piezoelectric film sensor 2 is arranged between the two pressure sensors 1 and used for capturing physiological signals of a user, such as respiration, heart rate and the like. The controller is electrically connected with the two pressure sensors 1 and the piezoelectric film sensor 2, and the controller is used for controlling the piezoelectric film sensor 2 to work according to the pressure detected by the pressure sensors 1.
The piezoelectric film sensor 2 can sensitively respond to weak dynamic signals such as respiration and heart rate signals. When the sleep monitoring device is used, the sleep monitoring device is tiled on a bed, when a user lies on the bed, the respiration fluctuation and the heart beat are captured by the piezoelectric film sensor, and the respiration and heart rate values are obtained through calculation. Because the piezoelectric film sensor 2 is sensitive to the abnormality of the dynamic signal, for example, someone passes by the bed or a gust of wind blows, the sensor can be captured by the piezoelectric film sensor 2, it is difficult to judge whether the user is in the bed or out of the bed, and the parameters of various human physiological signals are inaccurate to be collected, so the sleep monitoring device is provided with the pressure sensor 1. The user can be judged to be in the bed only when the pressure sensor 1 detects a certain pressure value, the piezoelectric film sensor 2 is controlled to work, and the accuracy of judging that the user is out of the bed or in the bed is improved. The pressure sensor 1 can also collect small breathing pressure changes, so that the collection sources of breathing signals are increased, and the accuracy of the breathing signals is improved.
By implementing the present embodiment, the two pressure sensors 1 are respectively provided on both sides of the piezoelectric thin film sensor 2. When the user lies on one side, no matter the user leans to the left side of the sleep monitoring device or the right side of the sleep monitoring device, at least one pressure sensor 1 can detect the pressure generated by the user and transmit the pressure information to the controller, and therefore the user is judged to be in a bed state. Not only improves the accuracy of judging whether the user is out of bed or in bed. And the acquisition source of the respiratory signal is increased, and the accuracy of the respiratory signal is improved.
In a specific embodiment, as shown in fig. 2, the pressure sensor 1 includes a plurality of sensing units 11, and the sensing units 11 are disposed at intervals along the pressure sensor 1.
The pressure sensor is triggered by the slight bending of the ordinary pressure sensor, so that the sleep monitoring device is required to be kept flat when being placed, and the user experience is poor. When the pressure sensor is packaged and delivered, the common pressure sensor cannot be bent freely, and can be difficult to recover once being bent excessively, so that the pressure sensor is always in a trigger state, the yield is reduced, the packaging volume of the common pressure sensor is large, the packaging cost is high, and the transportation cost is also high.
A number of spaced apart sensing units 11 are provided on the pressure sensor 1, which do not trigger the pressure sensor 1 when the sleep monitoring device is slightly uneven. Meanwhile, the mattress can be freely bent and packaged for delivery, the packaging volume is reduced, the packaging cost and the transportation cost are reduced, and the mattress is suitable for most mattresses in the market and has very high sensitivity. The distance between the plurality of sensing units 11 is 20mm, so that high sensitivity is ensured, and free bending package delivery is realized.
In one embodiment, the pressure sensor further comprises a guiding member, such as EVA foam, which is attached to the surface of the sensing unit, so that the body pressure is more easily transmitted to the pressure sensor 1, and the sensing range of the pressure sensor 1 is improved.
In one embodiment, as shown in fig. 3, the sleep monitor device further includes two reinforcing layers 3, and the two pressure sensors 1 and the piezoelectric film sensor 2 are disposed between the two reinforcing layers 3 and are wrapped by the two reinforcing layers 3.
With the protective structure of back up coat 3 as pressure sensor 1 and piezoelectric film sensor 2, not only fixed pressure sensor 1 and piezoelectric film sensor 2's relative position, can also reduce the user and lead to the fact wearing and tearing to the sensor at the in-process that uses sleep monitoring device, increased sleep monitoring device's life, promoted user experience.
In a specific embodiment, as shown in fig. 3, the sleep monitor device further includes two insulating layers 4, and the two reinforcing layers 3 are disposed between the two insulating layers 4 and wrapped by the two insulating layers 4.
The insulating layer 4 is arranged on the periphery of the reinforcing layer 3, so that electric shock of a user caused by electric leakage of the sensor can be effectively avoided. In this embodiment, the insulating layer 4 is made of PC plastic, which is tough, has high impact resistance, high dimensional stability and a wide range of service temperatures, good electrical insulation and heat resistance, and is non-toxic.
Further, as shown in fig. 4, the sleep monitoring device further comprises two fabric layers 5, and the two insulating layers 4 are disposed between the two fabric layers 5 and wrapped by the two fabric layers 5.
The sleep monitoring device with the cloth layer 5 can be directly contacted with skin, a user can not feel uncomfortable when lying on the sleep monitoring device, and the comfort of the sleep monitoring device is improved.
In an embodiment, the pressure sensor 1 and the piezoelectric film sensor 2 are packaged by a hot pressing process, and the evacuation layer 6 is disposed on the periphery of the two pressure sensors 1.
The hot pressing process has the advantages of cheap mold, uniform thickness of finished products and the like, and is a simple and common processing method in the plastic processing industry. Because the hot pressing process can lead to the pressure sensor 1 to lose efficacy, the periphery of the pressure sensor 1 is provided with the evacuation layer 6, so that the pressure sensor 1 can be insulated when packaged by the hot pressing process, and the pressure sensor 1 is not damaged during packaging.
In one embodiment, the pressure sensor package is thicker than 5mm and is packaged by a soft material.
Because the human body has radian, when lying on the bed, the waist and the bed may have a gap in the vertical direction, and cannot be contacted. Therefore, a sufficient package thickness is required to transmit the human body pressure to the pressure sensor 1. The soft material encapsulation can improve the performance of the conduction mechanism, so that the body pressure can be more easily conducted to the pressure sensor 1.
An embodiment of the present invention shows a sleep monitoring device, as shown in fig. 1, a pressure sensor 1 is respectively disposed on two sides of a piezoelectric thin film sensor 2 in the same horizontal direction. The two pressure sensors 1 are used for detecting pressure generated by the outside, and the piezoelectric film sensor is used for capturing physiological signals of a user. When a user lies on one side, no matter the user leans to the left side of the sleep monitoring device or the right side of the sleep monitoring device, at least one pressure sensor 1 can detect the pressure generated by the user and transmit the pressure information to the controller, and the controller is used for controlling the piezoelectric film sensor to work according to the pressure detected by the pressure sensor. Not only improves the accuracy of judging whether the user is out of bed or in bed. And the acquisition source of the respiratory signal is increased, and the accuracy of the respiratory signal is improved.
The invention provides a control method of a sleep monitoring device, which is used for controlling a controller of any of the above embodiments, and as shown in fig. 5, the control method comprises the following steps:
s110: receiving a starting signal;
s120: acquiring a first pressure value on a pressure sensor;
s130: when the first pressure value is greater than or equal to a preset pressure threshold value, setting the first pressure value as an initial pressure value;
s140: acquiring a second pressure value on the pressure sensor;
s150: judging whether the second pressure value meets a preset condition or not according to the initial pressure value;
s160: and when the second pressure value meets the preset condition, judging that the user is in a bed state.
In this embodiment, the turn-on signal is a signal for controlling the sleep monitoring device to turn on, and may be sent by a switch, a power supply, a remote controller, a mobile phone, a tablet computer, etc. integrated on the sleep monitoring device controller. The first pressure value is a pressure value obtained by the pressure sensor 1 when the sleep monitoring device controller is started, the preset initial pressure value is a preset initial pressure value, and the default setting is zero under a general condition. The second pressure value is a pressure value obtained by triggering the pressure sensor 1 when an object is newly added to the sleep monitoring device or a user lies on the sleep monitoring device.
Articles such as quilts and pillows can be usually placed on the bed, when the sleep monitoring device is started, the pressure brought by the articles can cause the pressure sensor 1 to be triggered by mistake, so that the judgment that the user is in the bed state is made, and the accuracy of the sleep information detected by the sleep monitoring device is low. For this reason, the present embodiment provides a control method for preventing the pressure sensor 1 from being triggered by mistake. Through implementing this embodiment, when the sleep monitor device was opened, pressure sensor 1 can acquire the first pressure value once to compare first pressure value with predetermineeing initial pressure value, when first pressure value is greater than or equal to predetermineeing initial pressure value, set first pressure value or predetermineeing initial pressure value as initial pressure value. Through the steps, the pressure provided by the object is the same as the initial pressure value. When the pressure sensor 1 detects a second pressure value larger than the first pressure value, the controller can judge whether the second pressure value meets a preset condition according to the initial pressure value, and judge that the user is in a bed state when the second pressure value meets the preset condition, so that the accuracy of judging that the user is out of the bed or in the bed is improved. The preset condition is a preset condition for determining whether the user is in a bed state, and two preferred embodiments are listed below for explanation.
In an integrated embodiment, as shown in fig. 7, step S150 includes:
s151: comparing the second pressure value with the initial pressure value;
s152: and when the second pressure value is larger than the initial pressure value, judging that the second pressure value meets a preset condition.
Through implementing this embodiment, pressure sensor 1 will judge that the user is in the state of being in the bed only if it is greater than the pressure that the article provided to detect, has improved the accuracy of judging that the user leaves the bed or is in the bed.
In one embodiment, as shown in fig. 7, step S150 includes:
s153: calculating a deviation value between the second pressure value and the initial pressure value;
s154: comparing the deviation value with a preset deviation threshold value;
s155: and when the second pressure value reaches a preset deviation threshold value, judging that the second pressure value meets a preset condition.
After the initial pressure value is confirmed, the user may place a new object on the bed, such as a doll and clothes, and the pressure provided by the object is increased to be greater than the initial pressure value, thereby causing the pressure sensor 1 to be triggered by mistake. Through implementing this embodiment, when having increased newly on the sleep monitor device or the user lies on the sleep monitor device, pressure sensor 1 detects the pressure increase to acquire the second pressure value, and calculate the deviation value of second pressure value and initial pressure value, and compare this deviation value with preset deviation threshold value, pressure sensor 1 will judge that the user is in the state of being in bed only when detecting that the second pressure value is greater than preset deviation threshold value. In this embodiment, the preset deviation threshold is a preset threshold, for example, 50N or 100N, the deviation value is a pressure value generated by a new object or a user, and compared with the user, the pressure of the new object on the sleep monitoring device is usually smaller, for example, objects such as dolls and clothes are usually lower than the preset deviation threshold, at this time, the pressure sensor 1 is not triggered by mistake, and only when the user lies on the sleep monitoring device, so that the new pressure reaches the preset deviation threshold, the pressure sensor 1 is triggered to judge that the user is in a bed state, thereby improving the accuracy of judging that the user is out of the bed or in the bed.
It should be understood that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some technical features; and all such modifications and alterations should fall within the scope of the appended claims.
Claims (10)
1. A sleep monitoring device, comprising:
the two pressure sensors are horizontally arranged at intervals and used for detecting the pressure generated by the outside;
and the piezoelectric film sensor is horizontally arranged with the two pressure sensors and is arranged between the two pressure sensors, and the piezoelectric film sensor is used for capturing physiological signals of a user.
And the controller is electrically connected with the two pressure sensors and the piezoelectric film sensor and is used for controlling the piezoelectric film sensor to work according to the pressure detected by the pressure sensors.
2. The sleep monitoring device as set forth in claim 1, wherein: the pressure sensor comprises a plurality of sensing units, and the sensing units are arranged at intervals.
3. The sleep monitoring device as set forth in claim 2, wherein: the pressure sensor further comprises a guide which is attached to the surface of the sensing unit.
4. The sleep monitoring device as set forth in claim 1, wherein: the piezoelectric sensor is characterized by further comprising two reinforcing layers, wherein the two pressure sensors and the piezoelectric film sensor are arranged between the two reinforcing layers and are wrapped together by the two reinforcing layers.
5. The sleep monitoring device as set forth in claim 3, wherein: the reinforced plastic composite material further comprises two insulating layers, and the two reinforcing layers are arranged between the two insulating layers.
6. The sleep monitoring device as set forth in claim 4, wherein: the cloth material layer is characterized by further comprising two cloth material layers, and the two insulating layers are arranged between the two cloth material layers.
7. The sleep monitoring device as claimed in any one of claims 1-6, characterized in that: the two pressure sensors and the piezoelectric film sensor are packaged by adopting a hot pressing process, and the periphery of the two pressure sensors is provided with an avoidance layer.
8. The sleep monitoring device as set forth in claim 7, wherein: and the packaging thickness of the two pressure sensors is more than 5mm, and the two pressure sensors are packaged by adopting a soft material.
9. A control method of a sleep monitoring device is characterized in that: the control method for controlling the controller according to any one of claims 1 to 8, the control method comprising:
receiving a starting signal;
acquiring a first pressure value on the pressure sensor;
comparing the first pressure value with a preset pressure threshold value;
when the first pressure value is greater than or equal to the preset pressure threshold value, setting the first pressure value as an initial pressure value;
acquiring a second pressure value on the pressure sensor;
judging whether the second pressure value meets a preset condition or not according to the initial pressure value;
and when the second pressure value meets the preset condition, judging that the user is in a bed state.
10. The method for controlling a sleep monitor device according to claim 9, wherein the determining whether the second pressure value satisfies a preset condition according to the initial pressure value further comprises:
comparing the second pressure value to the initial pressure value;
when the second pressure value is larger than the initial pressure value, judging that the second pressure value meets a preset condition;
or, further comprising:
calculating a deviation value of the second pressure value and the initial pressure value;
comparing the deviation value with a preset deviation threshold value;
and when the second pressure value reaches the preset deviation threshold value, judging that the second pressure value meets a preset condition.
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| CN202011052834.9A CN112155526A (en) | 2020-09-29 | 2020-09-29 | Sleep monitoring device and control method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112998670A (en) * | 2021-02-23 | 2021-06-22 | 珠海泉石智能科技有限公司 | Sleep quality monitoring system and sleep quality monitoring method |
| CN113679344A (en) * | 2021-07-30 | 2021-11-23 | 深圳数联天下智能科技有限公司 | Sleep monitor detection method and device and sleep monitor |
| CN117409537A (en) * | 2023-11-20 | 2024-01-16 | 河北大学附属医院 | Ward sensing and calling system for night use |
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| CN117409537A (en) * | 2023-11-20 | 2024-01-16 | 河北大学附属医院 | Ward sensing and calling system for night use |
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