CN114557571A - Intelligent mattress and physiological information detection method - Google Patents
Intelligent mattress and physiological information detection method Download PDFInfo
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- CN114557571A CN114557571A CN202210291165.3A CN202210291165A CN114557571A CN 114557571 A CN114557571 A CN 114557571A CN 202210291165 A CN202210291165 A CN 202210291165A CN 114557571 A CN114557571 A CN 114557571A
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- 238000001514 detection method Methods 0.000 title claims abstract description 95
- 239000012530 fluid Substances 0.000 claims abstract description 71
- 238000000034 method Methods 0.000 claims description 14
- 230000000694 effects Effects 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C31/00—Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
- A47C31/12—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons
- A47C31/123—Means, e.g. measuring means for adapting chairs, beds or mattresses to the shape or weight of persons for beds or mattresses
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C21/00—Attachments for beds, e.g. sheet holders, bed-cover holders; Ventilating, cooling or heating means in connection with bedsteads or mattresses
Abstract
The invention discloses an intelligent mattress and a physiological information detection method. The intelligent mattress comprises a mattress body, wherein a supporting device, a comparison unit, a control module and a pressure difference detection piece are arranged on the mattress body; the supporting device comprises a first supporting unit, and fluid is contained in the first supporting unit; the contrast unit is internally provided with fluid and has the same initial pressure as the first support unit; the differential pressure detection piece comprises a first detection end and a second detection end, the first detection end is connected with the comparison unit, the second detection end is connected with the first support unit, and the differential pressure detection piece is used for detecting the differential pressure between the comparison unit and the first support unit; the control module is electrically connected with the pressure difference detection piece and is used for acquiring the pressure difference information detected by the pressure difference detection piece. By adopting the scheme, the effects of higher comfort level and high detection precision during detection are realized.
Description
Technical Field
The embodiment of the invention relates to the technical field of mattresses, in particular to an intelligent mattress and a physiological information detection method.
Background
At present, the mattress of soft or hard degree can be adjusted to human sleep habit to intelligent mattress, still can have the function of measuring human physiological sign simultaneously concurrently. However, the existing intelligent mattress has poor comfort level during detection, and some weak physiological signals are difficult to detect.
Disclosure of Invention
The invention provides an intelligent mattress and a physiological information detection method, which are used for realizing higher comfort level and high detection precision during detection.
According to one aspect of the invention, an intelligent mattress is provided, which comprises a mattress body, wherein a supporting device, a comparison unit, a control module and a pressure difference detection piece are arranged on the mattress body;
the supporting device comprises a first supporting unit, and fluid is contained in the first supporting unit;
the contrast unit is internally provided with fluid and has the same initial pressure as the first support unit;
the pressure difference detection piece comprises a first detection end and a second detection end, the first detection end is connected with the comparison unit, the second detection end is connected with the first support unit, and the pressure difference detection piece is used for detecting the pressure difference between the comparison unit and the first support unit;
the control module is electrically connected with the pressure difference detection piece and is used for acquiring the pressure difference information detected by the pressure difference detection piece.
In an alternative embodiment of the invention, a back region is provided on the mattress body, the first support unit being provided on the back region.
In an optional embodiment of the invention, the intelligent mattress further comprises a first pressure detection piece and a pressure control module;
the first pressure detection part is used for detecting the initial pressure of the first support unit;
the pressure control module (1) is used for controlling the initial pressures of the comparison unit and the first support unit to be the same;
the control module is electrically connected with the pressure control module and the first pressure detection piece, and is used for acquiring pressure information detected by the first pressure detection piece and controlling the pressure control module.
In an alternative embodiment of the present invention, the pressure control module includes a power unit and a first switch unit;
the comparison unit is communicated with the first support unit through a pipeline, and the first switch unit is used for controlling the on-off of the pipeline between the comparison unit and the first support unit;
the power unit is used for providing power for conveying fluid to the comparison unit and the first support unit;
the control module is electrically connected with the first switch unit and used for controlling the working state of the first switch unit.
In an alternative embodiment of the invention, the power unit comprises a pump body and a fluid supply line, the pump body comprises a fluid outlet, and the fluid outlet of the pump body is communicated with the comparison unit through the fluid supply line.
In an optional embodiment of the present invention, the pressure control module further includes a second switch unit, and the second switch unit is disposed on the fluid supply pipeline and is configured to control on/off of the fluid supply pipeline;
the supporting device further comprises a plurality of second supporting units, the power unit further comprises a plurality of fluid supply branches and a third switch unit, and a fluid outlet of the pump body is connected with the plurality of fluid supply branches;
the plurality of fluid supply branches are connected with the plurality of second supporting units in a one-to-one correspondence manner;
the plurality of third switch units are connected with the plurality of fluid supply branches in a one-to-one correspondence manner and used for controlling the on-off of the plurality of fluid supply branches in a one-to-one correspondence manner;
the control module is electrically connected with the second switch unit and the third switch unit and is used for controlling the working states of the second switch unit and the third switch unit.
In an alternative embodiment of the present invention, at least one of the first switching unit, the second switching unit, and the third switching unit includes a solenoid valve;
and/or the intelligent mattress further comprises a plurality of second pressure detection pieces, and the second pressure detection pieces are used for detecting the pressure information of the second support units.
In an alternative embodiment of the present invention, the differential pressure detecting member includes a differential pressure sensor;
and/or, the first pressure detection member comprises a pressure sensor.
According to another aspect of the present invention, there is provided a physiological information detection method for an intelligent mattress according to any one of the embodiments of the present invention, the method including:
acquiring the pressure difference information of the first supporting unit and the comparison unit detected by the pressure difference detection piece in real time;
determining pressure variation information based on the differential pressure information and initial pressure information of the first support unit;
physiological information is determined based on the pressure variation information.
In an optional embodiment of the present invention, before the acquiring the differential pressure information of the first supporting unit and the comparing unit detected by the differential pressure detecting element in real time, the method further includes:
controlling the first switch unit and the second switch unit to be opened so as to communicate the pump body with the comparison unit and the first support unit;
controlling the pump body to be opened so that the pump body fills fluid to the comparison unit and the first support unit;
acquiring first pressure information of a first supporting unit detected by a first pressure detection piece in real time;
controlling the second switch unit and the pump body to close to stop priming the fluid;
acquiring the pressure difference information of the first supporting unit and the comparison unit detected by the pressure difference detection piece in real time;
determining whether the difference value of the differential pressure information and 0 is smaller than a preset difference value;
if yes, determining the first pressure information at the moment as initial pressure information, controlling the first switch unit to be closed to enter a detection mode, and simultaneously executing a step of acquiring the pressure difference information of the first supporting unit and the comparison unit detected by the pressure difference detection piece in real time in the detection mode.
According to the technical scheme of the embodiment of the invention, the comparison unit which is equal to the initial pressure of the first support unit is arranged, when the pressure on the first support unit changes, the pressure difference detection piece can measure the pressure difference of the first support unit relative to the comparison unit, so that the pressure change quantity of the first support unit can be reflected, and the pressure sensor is not required to detect the pressure values before and after the pressure change of the first support unit. Therefore, the effect of measuring the pressure variation with high precision can be realized. Since the physiological information of the human body is reflected on the pressure variation of the first supporting unit, for example, when the user breathes, the pressure value applied to the first supporting unit is slightly changed, and therefore, the physiological information of the user can be obtained according to the pressure variation by measuring the pressure variation of the first supporting unit. By making the measurement accuracy of the pressure variation high, the physiological information of the user can be measured with high accuracy. Because only need the pressure difference that the pressure difference detection piece measured first supporting element and contrast unit, so need not to set up the position that the user can contact with the pressure difference detection piece, as long as guarantee that first supporting element can play the supporting role to the user can, comfort level when having improved the user and using has realized that comfort level is higher and detect the effect that the precision is high when detecting.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an intelligent mattress according to a first embodiment of the present invention;
FIG. 2 is a block diagram of the connection between the control module and the differential pressure detecting element according to the first embodiment of the present invention;
fig. 3 is a schematic structural view of a mattress body according to a first embodiment of the present invention;
fig. 4 is a block diagram illustrating connection between another control module and other modules according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another intelligent mattress according to the first embodiment of the present invention;
FIG. 6 is a flowchart of a physiological information detection method according to a second embodiment of the present invention;
fig. 7 is a flowchart of a physiological information detection method according to a third embodiment of the present invention.
Wherein: 1. a pressure control module; 11. a power unit; 111. a pump body; 112. a fluid supply line; 113. a fluid supply branch; 12. a first switch unit; 13. a second switching unit; 14. a third switching unit; 2. a first pressure detecting member; 3. a differential pressure detecting member; 4. a comparison unit; 5. a second pressure detecting member; 6. a control module; 7. a mattress body; 71. a back region; 8. a support device; 81. a first supporting unit; 82. a second supporting unit.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example one
Fig. 1 is a schematic structural diagram of an intelligent mattress according to a first embodiment of the present invention, and fig. 2 is a connection block diagram of a control module and a differential pressure detecting element according to a first embodiment of the present invention, which is applicable to a situation where a user measures physiological information of the user while sleeping, as shown in fig. 1 and fig. 2, the intelligent mattress includes a mattress body 7 (not shown in fig. 1), and the mattress body 7 is provided with a supporting device 8, a comparison unit 4, a control module 6, and a differential pressure detecting element 3.
The support device 8 includes a first support unit 81, and the first support unit 81 has a fluid therein. The first support unit 81 refers to a portion for supporting a user when the user lies on the mattress body 7, and the first support unit 81 may be filled with a fluid including a material capable of flowing such as gas or liquid. For example, when the smart mattress is an air bag bed, the first support element 81 may be an air bag. When the smart mattress is a water bed, the first support unit 81 may be a unit filled with water.
The control unit 4 has a fluid inside and the same initial pressure as the first supporting unit 81. The reference cell 4 is a cell that can be filled with a fluid. The control unit 4 may be adjusted to an initial pressure consistent with the first support unit 81 at the time of initial process production. For example, the comparison unit 4 may be provided as a member having the same volume as the first support unit 81 and the same amount of fluid stored therein. In another specific embodiment, the comparison unit 4 may also be a component having a different structure from the first support unit 81, and the real-time measurement is performed by an external pressure sensor to control the initial pressure of the comparison unit 4 and the initial pressure of the first support unit 81 to be the same.
The differential pressure detecting member 3 includes a first detecting end connected to the comparison unit 4 and a second detecting end connected to the first supporting unit 81, and the differential pressure detecting member 3 is used to detect the differential pressure between the comparison unit 4 and the first supporting unit 81. The pressure difference detecting member 3 is a member capable of detecting a pressure difference between two containers, for example, in a specific embodiment, the pressure difference detecting member 3 includes a pressure difference sensor, and the pressure difference sensor is a sensor for measuring a difference between two pressures, and by including the pressure difference sensor in the pressure difference detecting member 3, the pressure difference between the comparison unit 4 and the first supporting unit 81 can be conveniently measured.
The control module 6 is electrically connected with the differential pressure detecting member 3 and is used for acquiring the differential pressure information detected by the differential pressure detecting member 3. The control module 6 refers to a "decision mechanism" that issues commands, i.e., coordinates and directs operations of the entire computer system. In a particular embodiment, the control module 6 includes a controller. The controller may specifically include a microprocessor, such as a single chip microcomputer. Preferably, the control module 6 may include a control board and a control box, while the control board and the comparison unit 4 are both placed in the control box.
In the prior art, in order to enable an intelligent mattress to have different support performances for different users, a pressure sensor is usually arranged on the intelligent mattress, and the pressure of a support device 8 on the intelligent mattress is detected by the pressure sensor, however, the current pressure sensor mainly adopts a direct method when measuring pressure changes. The method directly adopts the pressure sensor to measure the internal pressure of the device to be measured, such as: the pressure before change is X1 and after change is X2, the change is X2-X1. The pressure sensor is usually large in measurement range X2 and X1, but the pressure sensor is usually small in accuracy in large measurement range, for example, when the measurement range of the pressure sensor is 2 × X2, and the system cannot measure the pressure change when the pressure change is less than the sensor accuracy 1% FS. However, the physiological information of the user is usually weak, such as heartbeat and respiration information, which is difficult to be measured by using the pressure sensor. Therefore, in order to measure weak physiological information of a human body, a piezoelectric sensor is usually arranged on one side of the intelligent mattress, which is used for the user to lie, and the physiological information of the user is detected through the piezoelectric sensor.
According to the scheme, by arranging the comparison unit 4 which is equal to the initial pressure of the first support unit 81, when the pressure on the first support unit 81 changes, the pressure difference detection piece 3 can measure the pressure difference of the first support unit 81 relative to the comparison unit 4, so that the pressure change amount of the first support unit 81 can be reflected, and the pressure sensor is not required to detect the pressure values before and after the pressure change of the first support unit 81. Therefore, the effect of measuring the pressure variation with high precision can be realized. Since the physiological information of the human body is reflected on the pressure variation of the first supporting unit 81, for example, when the user breathes, the pressure value applied to the first supporting unit 81 has a slight change, and therefore, the physiological information of the user can be obtained according to the pressure variation by measuring the pressure variation of the first supporting unit 81. By making the measurement accuracy of the pressure variation high, the physiological information of the user can be measured with high accuracy. Because only need pressure difference detection piece 3 to measure the pressure difference of first supporting element 81 and contrast unit 4, so need not to set up pressure difference detection piece 3 at the position that the user can contact, as long as guarantee first supporting element 81 can play the supporting role to the user can, comfort level when having improved the user and using has realized that comfort level is higher and detect the high effect of precision when detecting.
In an alternative embodiment of the invention, as shown in fig. 3, a back region 71 is provided on the mattress body 7, and a first support unit 81 is provided on the back region 71. The back area 71 is an area where the back of the user is usually in contact with when the user lies on the mattress body 7, and since information such as breathing and heartbeat is usually weaker than information such as body movement in physiological parameters of the user, the first support unit 81 is provided on the back area 71, so that the weaker physiological information such as breathing and heartbeat can be detected more accurately.
In an alternative embodiment of the present invention, as shown in fig. 1 and 4, the intelligent mattress further comprises a first pressure detection member 2 and a pressure control module 1.
The first pressure detecting member 2 is for detecting an initial pressure of the first supporting unit 81; here, the pressure detector is a member capable of detecting an initial pressure of the first supporting unit 81. In a particular embodiment, the pressure sensing member comprises a pressure sensor. The pressure sensor may be connected to the comparing unit 4, and since the initial pressure of the comparing unit 4 is the same as that of the first supporting unit 81, the initial pressure of the first supporting unit 81 can be reflected by detecting the pressure of the comparing unit 4 in the initial condition. In addition, the pressure sensor may be connected to the first supporting unit 81 so as to detect the real-time pressure of the first supporting unit 81, and the real-time pressure of the first supporting unit 81 may include the initial pressure of the first supporting unit 81 in the initial state.
The pressure control module 1 is used for controlling the initial pressures of the comparison unit 4 and the first supporting unit 81 to be the same; the pressure control module 1 is a module capable of controlling the initial pressures of the comparison unit 4 and the first support unit 81 to be the same.
According to the scheme, the initial pressures of the products of different models are different, and meanwhile, the condition of production errors exists, so that the initial pressures of all the products are difficult to guarantee to be the same in advance. Therefore, by providing the pressure detection member and the pressure control module 1, the initial pressure of the first support unit 81 can be flexibly adjusted, and the versatility is strong.
On the basis of the above embodiment, the pressure control module 1 includes a power unit 11 and a first switch unit 12; the comparison unit 4 and the first support unit 81 are communicated through a pipeline, and the first switch unit 12 is used for controlling the on-off of the pipeline between the comparison unit 4 and the first support unit 81. Wherein, since the comparison unit 4 and the first support unit 81 are communicated through the pipeline, the liquid or gas initially poured into the comparison unit 4 and the first support unit 81 can circulate in the comparison unit 4 and the first support unit 81 until the pressure between the comparison unit 4 and the first support unit 81 is the same in the state that the pipeline is communicated. The first switch unit 12 refers to a component capable of controlling on/off of a pipeline, and in a specific embodiment, the first switch unit 12 includes a first Electromagnetic valve (Electromagnetic valve), which is an industrial device controlled by electromagnetism, is an automatic basic element for controlling fluid, belongs to an actuator, and is not limited to hydraulic pressure and pneumatic pressure. By making the first switching unit 12 include the first electromagnetic valve, the on/off of the pipeline between the comparing unit 4 and the first supporting unit 81 can be controlled conveniently.
The power unit 11 is used for providing power for transporting the fluid to the comparison unit 4 and the first support unit 81; the control module 6 is electrically connected to the first switch unit 12, and is configured to control an operating state of the first switch unit 12.
The power unit 11 is a component capable of providing power for transporting fluid to the reference container and the container to be tested. Illustratively, power unit 11 includes a pump body 111 and a fluid supply pipeline 112, pump body 111 includes a fluid outlet, and the fluid outlet of pump body 111 is communicated with control unit 4 through fluid supply pipeline 112. The pump 111 is a mechanism for feeding or pressurizing fluid, and by providing the pump 111 and the fluid supply line 112, the pump 111 can feed external fluid into the comparison unit 4 through the pump 111 and the fluid supply line 112 when operating. Through setting up control module 6, the user need not first switch unit 12 of manual control, can control voluntarily, and it is comparatively convenient to use.
On the basis of the above embodiment, as shown in fig. 5, the pressure control module 1 further includes a second switch unit 13, where the second switch unit 13 is disposed on the fluid supply pipeline 112 and is used for controlling on/off of the fluid supply pipeline 112; the second switch unit 13 is a component capable of controlling the on/off of the fluid supply line 112, and in a specific embodiment, the second switch unit 13 includes a second solenoid valve, so that the on/off of the fluid supply line 112 can be conveniently controlled.
The supporting device 8 further includes a plurality of second supporting units 82, the power unit 11 further includes a plurality of fluid supply branches 113 and a third switching unit 14, and the fluid outlet of the pump body 111 is connected to each of the plurality of fluid supply branches 113. In practical applications, when the first supporting unit 81 is provided on the back area 71, the second supporting unit 82 may be provided on an area other than the back area 71, as shown in fig. 3, so that a plurality of areas of the user can be supported.
As shown in fig. 4 and 5, the plurality of fluid supply branches 113 are connected to the plurality of second supporting units 82 in a one-to-one correspondence; the plurality of third switching units 14 are connected to the plurality of fluid supply branches 113 in a one-to-one correspondence manner, and are configured to control on/off of the plurality of fluid supply branches 113 in a one-to-one correspondence manner. Through the plurality of third switch units 14 and the plurality of fluid supply branches 113, the supporting force of the second supporting unit 82 can be adjusted, which is convenient for satisfying different requirements of users. Meanwhile, a user can open the second switch unit 13 and the third switch according to the use requirement, so that the support force of different areas is changed, and the use is convenient.
The control module 6 is electrically connected to both the second switching unit 13 and the third switching unit 14, and is configured to control the operating states of the second switching unit 13 and the third switching unit 14. Wherein, the control module 6 can conveniently control the working states of the second switch unit 13 and the third switch unit 14 on line.
On the basis of the above embodiment, the intelligent mattress further comprises a plurality of second pressure detection pieces 5, and the second pressure detection pieces 5 are used for detecting the pressure information of the second supporting unit 82. The second pressure detecting element 5 is a component capable of detecting pressure, in a specific embodiment, the second pressure detecting element 5 includes a pressure sensor, and the second pressure detecting element 5 can be connected to the second supporting unit 82, so that the pressure of the second supporting unit 82 can be detected, and the pressure variation of the second supporting unit 82 can be determined.
In the actual measurement, only the information of the heartbeat, the breath, and the like of the user is weak, and the information of the body movement, and the like is usually strong, so that the detection accuracy can be improved by providing the first supporting unit 81 in the back area 71 of the user, and providing the comparison unit 4, the differential pressure detection piece 3, and the first pressure detection piece 2. By providing the second supporting unit 82 in the other region, only the second pressure detection member 5 is provided, and the production cost can be saved.
Illustratively, at least one of the first switching unit 12, the second switching unit 13, and the third switching unit 14 includes an electromagnetic valve; an Electromagnetic valve (Electromagnetic valve) is an industrial device controlled by electromagnetism, is an automatic basic element for controlling fluid, belongs to an actuator, and is not limited to hydraulic pressure and pneumatic pressure. By making at least one of the first switch unit 12, the second switch unit 13 and the third switch unit 14 include a first electromagnetic valve, the on/off of different pipelines can be conveniently controlled.
In a specific embodiment of the present invention, the range of the differential pressure sensor is 0.3Kpa, and the accuracy is 1% FS, so that the differential pressure between the comparison unit 4 and the first supporting unit 81 can be measured with high accuracy, and the pressure variation of the container to be measured can be obtained.
Example two
Fig. 6 is a flowchart of a physiological information detection method according to an embodiment of the present invention, where the present embodiment is applicable to a situation where a user measures physiological information of the user while sleeping, the physiological information detection device may be implemented in a form of hardware and/or software, and the physiological information detection device may be configured in the control module. As shown in fig. 6, the method includes:
and S110, acquiring the information of the pressure difference of the first supporting unit and the comparison unit detected by the pressure difference detection piece in real time.
And S120, determining pressure change information based on the differential pressure information and the initial pressure information of the first supporting unit.
And S130, determining physiological information based on the pressure change information.
The pressure variation information refers to the pressure variation situation on the first supporting unit, which is obtained by the reaction of the difference between the pressure of the first supporting unit at different time points and the initial pressure.
According to the scheme, the comparison unit which is equal to the initial pressure of the first supporting unit is arranged, the pressure difference information of the first supporting unit and the comparison unit is detected by the pressure difference detection piece, the pressure variation of the first supporting unit can be reflected, and the pressure sensor is not required to detect the pressure values before and after the pressure variation of the first supporting unit. Therefore, the effect of measuring the pressure variation information with high precision can be achieved. Since the physiological information of the human body is reflected on the pressure variation of the first supporting unit, for example, when the user breathes, the pressure value applied to the first supporting unit slightly changes, and therefore, the physiological information of the user can be obtained according to the pressure variation information by determining the pressure variation information based on the pressure difference information and the initial pressure information of the first supporting unit. By making the measurement accuracy of the pressure fluctuation information high, the physiological information of the user can be measured with high accuracy. Because only need the pressure difference that the pressure difference detection piece measured first supporting element and contrast unit, so need not to set up the position that the user can contact with the pressure difference detection piece, as long as guarantee that first supporting element can play the supporting role to the user can, comfort level when having improved the user and using has realized that comfort level is higher and detect the effect that the precision is high when detecting.
EXAMPLE III
Fig. 7 is a flowchart of a physiological information detection method according to a third embodiment of the present invention, which improves the relationship between the above embodiments. As shown in fig. 7, the method includes:
and S200, controlling the first switch unit and the second switch unit to be turned on so as to communicate the pump body with the comparison unit and the first support unit.
The first switch unit controls whether the comparison unit is communicated with the first support unit or not, and the second switch unit controls whether the first support unit is communicated with the pump body or not, so that the pump body can be communicated with the comparison unit and the first support unit by controlling the first switch unit and the second switch unit to be turned on.
S210, controlling the pump body to be opened so that the pump body can fill fluid into the comparison unit and the first supporting unit.
Wherein, when the pump body is opened, external fluid can be transported to the comparison unit and the first supporting unit.
S220, first pressure information of the first supporting unit detected by the first pressure detecting piece is obtained in real time.
The obtaining manner may be various, for example, the obtaining manner may be electrically connected to the first pressure detecting element, so as to obtain the first pressure information of the first supporting unit detected by the first pressure detecting element.
And S230, controlling the second switch unit and the pump body to be closed to stop filling the fluid.
When the second switch unit and the pump body are closed, the pump body is not communicated with the comparison unit, so that the fluid is stopped being filled into the comparison unit.
S240, acquiring the information of the pressure difference of the first supporting unit and the comparison unit detected by the pressure difference detection piece in real time.
There are various ways of obtaining the information, such as electrically connecting with the pressure difference detecting member, so as to obtain the information of the pressure difference between the first supporting unit and the comparison unit detected by the pressure difference detecting member.
And S250, determining whether the difference value between the differential pressure information and 0 is smaller than a preset difference value.
When the difference value between the differential pressure information and 0 is smaller than the preset difference value, the differential pressure information approaches to 0, and the pressure between the comparison unit and the first support unit is approximately equal.
If yes, go to S260, otherwise go to S250.
And S260, determining the first pressure information at the moment as initial pressure information, and controlling the first switch unit to be closed to enter a detection mode.
When the pressure between the comparison unit and the first support unit is approximately equal, the detection can be started, so that the first pressure information at the moment is determined as the initial pressure information, the comparison unit and the first support unit are not communicated at the moment by controlling the first switch unit to be closed, and therefore when the pressure applied to the first support unit is changed, fluid cannot flow into the comparison unit to influence the measurement result.
S270, acquiring the information of the pressure difference of the first supporting unit and the comparison unit detected by the pressure difference detection piece in real time.
And S280, determining pressure change information based on the differential pressure information and the initial pressure information of the first support unit.
And S290, determining physiological information based on the pressure change information.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. An intelligent mattress is characterized by comprising a mattress body (7), wherein a supporting device (8), a contrast unit (4), a control module (6) and a pressure difference detection piece (3) are arranged on the mattress body (7);
the support device (8) comprises a first support unit (81), wherein the first support unit (81) is internally provided with fluid;
the contrast unit (4) has fluid inside and has the same initial pressure as the first support unit (81);
the differential pressure detection piece (3) comprises a first detection end and a second detection end, the first detection end is connected with the comparison unit (4), the second detection end is connected with the first support unit (81), and the differential pressure detection piece (3) is used for detecting the differential pressure of the comparison unit (4) and the first support unit (81);
the control module (6) is electrically connected with the pressure difference detection piece (3) and is used for acquiring the pressure difference information detected by the pressure difference detection piece (3).
2. The smart mattress according to claim 1, characterized in that a back region (71) is provided on the mattress body (7), the first support unit (81) being provided on the back region (71).
3. The smart mattress according to claim 1, characterized in that the smart mattress further comprises a first pressure detection member (2) and a pressure control module (1);
the first pressure detection member (2) is used for detecting the initial pressure of the first support unit (81);
the pressure control module (1) is used for controlling the initial pressure of the comparison unit (4) to be the same as that of the first support unit (81);
the control module (6) is electrically connected with the pressure control module (1) and the first pressure detection piece (2), and the control module (6) is used for acquiring pressure information detected by the first pressure detection piece (2) and controlling the pressure control module (1).
4. The smart mattress according to claim 3, characterized in that the pressure control module (1) comprises a power unit (11) and a first switch unit (12);
the comparison unit (4) is communicated with the first support unit (81) through a pipeline, and the first switch unit (12) is used for controlling the connection and disconnection of the pipeline between the comparison unit (4) and the first support unit (81);
the power unit (11) is used for providing power for conveying fluid to the comparison unit (4) and the first support unit (81);
the control module (6) is electrically connected with the first switch unit (12) and is used for controlling the working state of the first switch unit (12).
5. The smart mattress according to claim 4, characterized in that the power unit (11) comprises a pump body (111) and a fluid supply line (112), the pump body (111) comprising a fluid outlet, the fluid outlet of the pump body (111) being in communication with the contrast unit (4) through the fluid supply line (112).
6. The smart mattress according to claim 5, characterized in that the pressure control module (1) further comprises a second switch unit (13), the second switch unit (13) is arranged on the fluid supply pipeline (112) for controlling the on-off of the fluid supply pipeline (112);
the supporting device (8) further comprises a plurality of second supporting units (82), the power unit (11) further comprises a plurality of fluid supply branches (113) and a third switching unit (14), and a fluid outlet of the pump body (111) is connected with the plurality of fluid supply branches (113);
the plurality of fluid supply branches (113) are connected with the plurality of second supporting units (82) in a one-to-one correspondence manner;
the third switch units (14) are connected with the fluid supply branches (113) in a one-to-one correspondence manner and are used for controlling the on-off of the fluid supply branches (113) in a one-to-one correspondence manner;
the control module (6) is electrically connected with the second switch unit (13) and the third switch unit (14) and is used for controlling the working states of the second switch unit (13) and the third switch unit (14).
7. The smart mattress according to claim 6, characterized in that at least one of the first switching unit (12), the second switching unit (13) and the third switching unit (14) comprises a solenoid valve;
and/or the intelligent mattress further comprises a plurality of second pressure detection pieces (5), wherein the second pressure detection pieces (5) are used for detecting the pressure information of the second supporting units (82).
8. The smart mattress according to any one of claims 1 to 7, characterized in that the differential pressure detector (3) comprises a differential pressure sensor;
and/or the first pressure detection element (2) comprises a pressure sensor.
9. A physiological information detection method is characterized in that: for a smart mattress according to any one of claims 1-8, the method comprising:
acquiring the pressure difference information of the first supporting unit and the comparison unit detected by the pressure difference detection piece in real time;
determining pressure variation information based on the differential pressure information and initial pressure information of the first support unit;
physiological information is determined based on the pressure variation information.
10. The physiological information detecting method according to claim 9, wherein before the real-time acquisition of the differential pressure information of the differential pressure detecting member detecting the first supporting unit and the comparison unit, the method further comprises:
controlling the first switch unit and the second switch unit to be opened so as to communicate the pump body with the comparison unit and the first support unit;
controlling the pump body to be opened so that the pump body fills fluid to the comparison unit and the first support unit;
acquiring first pressure information of a first supporting unit detected by a first pressure detection piece in real time;
controlling the second switch unit and the pump body to close to stop filling the fluid;
acquiring the pressure difference information of the first supporting unit and the comparison unit detected by the pressure difference detection piece in real time;
determining whether the difference value of the differential pressure information and 0 is smaller than a preset difference value;
if yes, determining the first pressure information at the moment as initial pressure information, controlling the first switch unit to be closed to enter a detection mode, and simultaneously executing a step of acquiring the pressure difference information of the first supporting unit and the comparison unit detected by the pressure difference detection piece in real time in the detection mode.
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